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@@ -1,3533 +0,0 @@
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----
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- arch/arm/Kconfig | 4
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- drivers/Makefile | 2
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- drivers/cbus/Kconfig | 89 ++++
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- drivers/cbus/Makefile | 14
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- drivers/cbus/cbus.c | 309 ++++++++++++++++
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- drivers/cbus/cbus.h | 36 +
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- drivers/cbus/retu-headset.c | 356 ++++++++++++++++++
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- drivers/cbus/retu-pwrbutton.c | 118 ++++++
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- drivers/cbus/retu-rtc.c | 477 ++++++++++++++++++++++++
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- drivers/cbus/retu-user.c | 424 ++++++++++++++++++++++
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- drivers/cbus/retu-wdt.c | 387 ++++++++++++++++++++
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- drivers/cbus/retu.c | 468 ++++++++++++++++++++++++
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- drivers/cbus/retu.h | 77 ++++
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- drivers/cbus/tahvo-usb.c | 788 +++++++++++++++++++++++++++++++++++++++++
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- drivers/cbus/tahvo-user.c | 406 +++++++++++++++++++++
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- drivers/cbus/tahvo.c | 443 +++++++++++++++++++++++
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- drivers/cbus/tahvo.h | 61 +++
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- drivers/cbus/user_retu_tahvo.h | 75 +++
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- 18 files changed, 4533 insertions(+), 1 deletion(-)
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-
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---- /dev/null
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-+++ b/drivers/cbus/cbus.c
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-@@ -0,0 +1,332 @@
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-+/*
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-+ * drivers/cbus/cbus.c
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-+ *
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-+ * Support functions for CBUS serial protocol
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-+ *
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-+ * Copyright (C) 2004-2010 Nokia Corporation
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-+ * Contact: Felipe Balbi <[email protected]>
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-+ *
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-+ * Written by Juha Yrjölä <[email protected]>,
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-+ * David Weinehall <[email protected]>, and
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-+ * Mikko Ylinen <[email protected]>
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-+ *
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-+ * Several updates and cleanups by Felipe Balbi <[email protected]>
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-+ *
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-+ * This file is subject to the terms and conditions of the GNU General
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-+ * Public License. See the file "COPYING" in the main directory of this
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-+ * archive for more details.
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-+ *
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-+ * This program is distributed in the hope that it will be useful,
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-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-+ * GNU General Public License for more details.
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-+ *
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-+ * You should have received a copy of the GNU General Public License
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-+ * along with this program; if not, write to the Free Software
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-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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-+ */
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-+
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-+#include <linux/device.h>
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-+#include <linux/init.h>
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-+#include <linux/kernel.h>
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-+#include <linux/slab.h>
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-+#include <linux/spinlock.h>
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-+#include <linux/gpio.h>
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-+#include <linux/platform_device.h>
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-+
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-+#include <plat/cbus.h>
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-+
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-+#include "cbus.h"
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-+
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-+#define CBUS_XFER_READ 1
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-+#define CBUS_XFER_WRITE 0
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-+
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-+struct cbus_host {
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-+ /* host lock */
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-+ spinlock_t lock;
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-+
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-+ struct device *dev;
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-+
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-+ int clk_gpio;
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-+ int dat_gpio;
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-+ int sel_gpio;
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-+};
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-+
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-+static struct cbus_host *cbus_host;
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-+
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-+/**
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-+ * cbus_send_bit - sends one bit over the bus
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-+ * @host: the host we're using
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-+ * @bit: one bit of information to send
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-+ * @input: whether to set data pin as input after sending
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-+ */
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-+static int cbus_send_bit(struct cbus_host *host, unsigned bit,
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-+ unsigned input)
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-+{
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-+ int ret = 0;
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-+
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-+ gpio_set_value(host->dat_gpio, bit ? 1 : 0);
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-+ gpio_set_value(host->clk_gpio, 1);
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-+
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-+ /* The data bit is read on the rising edge of CLK */
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-+ if (input)
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-+ ret = gpio_direction_input(host->dat_gpio);
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-+
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-+ gpio_set_value(host->clk_gpio, 0);
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-+
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-+ return ret;
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-+}
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-+
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-+/**
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-+ * cbus_send_data - sends @len amount of data over the bus
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-+ * @host: the host we're using
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-+ * @data: the data to send
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-+ * @len: size of the transfer
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-+ * @input: whether to set data pin as input after sending
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-+ */
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-+static int cbus_send_data(struct cbus_host *host, unsigned data, unsigned len,
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-+ unsigned input)
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-+{
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-+ int ret = 0;
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-+ int i;
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-+
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-+ for (i = len; i > 0; i--) {
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-+ ret = cbus_send_bit(host, data & (1 << (i - 1)),
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-+ input && (i == 1));
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-+ if (ret < 0)
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-+ goto out;
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-+ }
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-+
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-+out:
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-+ return ret;
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-+}
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-+
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-+/**
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-+ * cbus_receive_bit - receives one bit from the bus
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-+ * @host: the host we're using
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-+ */
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-+static int cbus_receive_bit(struct cbus_host *host)
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-+{
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-+ int ret;
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-+
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-+ gpio_set_value(host->clk_gpio, 1);
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-+ ret = gpio_get_value(host->dat_gpio);
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-+ if (ret < 0)
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-+ goto out;
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-+ gpio_set_value(host->clk_gpio, 0);
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-+
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-+out:
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-+ return ret;
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-+}
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-+
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-+/**
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-+ * cbus_receive_data - receives @len data from the bus
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-+ * @host: the host we're using
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-+ * @len: the length of data to receive
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-+ */
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-+static int cbus_receive_data(struct cbus_host *host, unsigned len)
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-+{
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-+ int ret = 0;
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-+ int i;
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-+
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-+ for (i = 16; i > 0; i--) {
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-+ int bit = cbus_receive_bit(host);
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-+
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-+ if (bit < 0)
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-+ goto out;
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-+
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-+ if (bit)
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-+ ret |= 1 << (i - 1);
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-+ }
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-+
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-+out:
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-+ return ret;
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-+}
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-+
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-+/**
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-+ * cbus_transfer - transfers data over the bus
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-+ * @host: the host we're using
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-+ * @rw: read/write flag
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-+ * @dev: device address
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-+ * @reg: register address
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-+ * @data: if @rw == 0 data to send otherwise 0
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-+ */
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-+static int cbus_transfer(struct cbus_host *host, unsigned rw, unsigned dev,
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-+ unsigned reg, unsigned data)
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-+{
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-+ unsigned long flags;
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-+ int input = 0;
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-+ int ret = 0;
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-+
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-+ /* We don't want interrupts disturbing our transfer */
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-+ spin_lock_irqsave(&host->lock, flags);
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-+
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-+ /* Reset state and start of transfer, SEL stays down during transfer */
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-+ gpio_set_value(host->sel_gpio, 0);
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-+
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-+ /* Set the DAT pin to output */
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-+ gpio_direction_output(host->dat_gpio, 1);
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-+
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-+ /* Send the device address */
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-+ ret = cbus_send_data(host, dev, 3, 0);
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-+ if (ret < 0) {
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-+ dev_dbg(host->dev, "failed sending device addr\n");
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-+ goto out;
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-+ }
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-+
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-+ /* Send the rw flag */
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-+ ret = cbus_send_bit(host, rw, 0);
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-+ if (ret < 0) {
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-+ dev_dbg(host->dev, "failed sending read/write flag\n");
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-+ goto out;
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-+ }
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-+
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-+ /* Send the register address */
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-+ if (rw)
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-+ input = true;
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-+
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-+ ret = cbus_send_data(host, reg, 5, input);
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-+ if (ret < 0) {
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-+ dev_dbg(host->dev, "failed sending register addr\n");
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-+ goto out;
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-+ }
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-+
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-+ if (!rw) {
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-+ ret = cbus_send_data(host, data, 16, 0);
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-+ if (ret < 0) {
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-+ dev_dbg(host->dev, "failed sending data\n");
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-+ goto out;
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-+ }
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-+ } else {
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-+ gpio_set_value(host->clk_gpio, 1);
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-+
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-+ ret = cbus_receive_data(host, 16);
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-+ if (ret < 0) {
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-+ dev_dbg(host->dev, "failed receiving data\n");
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-+ goto out;
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-+ }
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-+ }
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-+
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-+ /* Indicate end of transfer, SEL goes up until next transfer */
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-+ gpio_set_value(host->sel_gpio, 1);
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-+ gpio_set_value(host->clk_gpio, 1);
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-+ gpio_set_value(host->clk_gpio, 0);
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-+
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-+out:
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-+ spin_unlock_irqrestore(&host->lock, flags);
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-+
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-+ return ret;
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-+}
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-+
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-+/**
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-+ * cbus_read_reg - reads a given register from the device
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-+ * @dev: device address
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-+ * @reg: register address
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-+ */
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-+int cbus_read_reg(unsigned dev, unsigned reg)
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-+{
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-+ return cbus_transfer(cbus_host, CBUS_XFER_READ, dev, reg, 0);
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-+}
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-+EXPORT_SYMBOL(cbus_read_reg);
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-+
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-+/**
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-+ * cbus_write_reg - writes to a given register of the device
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-+ * @dev: device address
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-+ * @reg: register address
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-+ * @val: data to be written to @reg
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-+ */
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-+int cbus_write_reg(unsigned dev, unsigned reg, unsigned val)
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-+{
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-+ return cbus_transfer(cbus_host, CBUS_XFER_WRITE, dev, reg, val);
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-+}
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-+EXPORT_SYMBOL(cbus_write_reg);
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-+
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-+static int __init cbus_bus_probe(struct platform_device *pdev)
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-+{
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-+ struct cbus_host *chost;
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-+ struct cbus_host_platform_data *pdata = pdev->dev.platform_data;
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-+ int ret;
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-+
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-+ chost = kzalloc(sizeof(*chost), GFP_KERNEL);
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-+ if (chost == NULL)
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-+ return -ENOMEM;
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-+
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-+ spin_lock_init(&chost->lock);
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-+
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-+ chost->clk_gpio = pdata->clk_gpio;
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-+ chost->dat_gpio = pdata->dat_gpio;
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-+ chost->sel_gpio = pdata->sel_gpio;
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-+ chost->dev = &pdev->dev;
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-+
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-+ ret = gpio_request(chost->clk_gpio, "CBUS clk");
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-+ if (ret < 0)
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-+ goto exit1;
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-+
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-+ ret = gpio_request(chost->dat_gpio, "CBUS data");
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-+ if (ret < 0)
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-+ goto exit2;
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-+
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-+ ret = gpio_request(chost->sel_gpio, "CBUS sel");
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-+ if (ret < 0)
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-+ goto exit3;
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-+
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-+ gpio_direction_output(chost->clk_gpio, 0);
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-+ gpio_direction_input(chost->dat_gpio);
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-+ gpio_direction_output(chost->sel_gpio, 1);
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-+
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-+ gpio_set_value(chost->clk_gpio, 1);
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-+ gpio_set_value(chost->clk_gpio, 0);
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-+
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-+ platform_set_drvdata(pdev, chost);
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-+
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-+ cbus_host = chost;
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-+
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-+ return 0;
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-+exit3:
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-+ gpio_free(chost->dat_gpio);
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-+exit2:
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-+ gpio_free(chost->clk_gpio);
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-+exit1:
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-+ kfree(chost);
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-+
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-+ return ret;
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-+}
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-+
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-+static void __exit cbus_bus_remove(struct platform_device *pdev)
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-+{
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-+ struct cbus_host *chost = platform_get_drvdata(pdev);
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-+
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-+ gpio_free(chost->sel_gpio);
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-+ gpio_free(chost->dat_gpio);
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-+ gpio_free(chost->clk_gpio);
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-+
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-+ kfree(chost);
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-+ cbus_host = NULL;
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-+}
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-+
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-+static struct platform_driver cbus_driver = {
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-+ .remove = __exit_p(cbus_bus_remove),
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-+ .driver = {
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-+ .name = "cbus",
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-+ },
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-+};
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-+
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-+static int __init cbus_bus_init(void)
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-+{
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-+ return platform_driver_probe(&cbus_driver, cbus_bus_probe);
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-+}
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-+subsys_initcall(cbus_bus_init);
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-+
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-+static void __exit cbus_bus_exit(void)
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-+{
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-+ platform_driver_unregister(&cbus_driver);
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-+}
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-+module_exit(cbus_bus_exit);
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-+
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-+MODULE_DESCRIPTION("CBUS serial protocol");
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-+MODULE_LICENSE("GPL");
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-+MODULE_AUTHOR("Juha Yrjölä");
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-+MODULE_AUTHOR("David Weinehall");
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-+MODULE_AUTHOR("Mikko Ylinen");
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-+MODULE_AUTHOR("Felipe Balbi <[email protected]>");
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-+
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---- /dev/null
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-+++ b/drivers/cbus/cbus.h
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-@@ -0,0 +1,29 @@
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|
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-+/*
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-+ * drivers/cbus/cbus.h
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|
|
-+ *
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|
|
-+ * Copyright (C) 2004, 2005 Nokia Corporation
|
|
|
-+ *
|
|
|
-+ * Written by Juha Yrjölä <[email protected]> and
|
|
|
-+ * David Weinehall <[email protected]>
|
|
|
-+ *
|
|
|
-+ * This file is subject to the terms and conditions of the GNU General
|
|
|
-+ * Public License. See the file "COPYING" in the main directory of this
|
|
|
-+ * archive for more details.
|
|
|
-+ *
|
|
|
-+ * This program is distributed in the hope that it will be useful,
|
|
|
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
-+ * GNU General Public License for more details.
|
|
|
-+ *
|
|
|
-+ * You should have received a copy of the GNU General Public License
|
|
|
-+ * along with this program; if not, write to the Free Software
|
|
|
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
-+ */
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-+
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|
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-+#ifndef __DRIVERS_CBUS_CBUS_H
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|
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-+#define __DRIVERS_CBUS_CBUS_H
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-+
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-+extern int cbus_read_reg(unsigned dev, unsigned reg);
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-+extern int cbus_write_reg(unsigned dev, unsigned reg, unsigned val);
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-+
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-+#endif /* __DRIVERS_CBUS_CBUS_H */
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|
|
---- /dev/null
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|
|
-+++ b/drivers/cbus/Kconfig
|
|
|
-@@ -0,0 +1,75 @@
|
|
|
-+#
|
|
|
-+# CBUS device configuration
|
|
|
-+#
|
|
|
-+
|
|
|
-+menu "CBUS support"
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|
|
-+
|
|
|
-+config CBUS
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|
|
-+ depends on ARCH_OMAP
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|
|
-+ bool "CBUS support on OMAP"
|
|
|
-+ ---help---
|
|
|
-+ CBUS is a proprietary serial protocol by Nokia. It is mainly
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|
|
-+ used for accessing Energy Management auxiliary chips.
|
|
|
-+
|
|
|
-+ If you want CBUS support, you should say Y here.
|
|
|
-+
|
|
|
-+config CBUS_TAHVO
|
|
|
-+ depends on CBUS
|
|
|
-+ bool "Support for Tahvo"
|
|
|
-+ ---help---
|
|
|
-+ Tahvo is a mixed signal ASIC with some system features
|
|
|
-+
|
|
|
-+ If you want Tahvo support, you should say Y here.
|
|
|
-+
|
|
|
-+config CBUS_TAHVO_USB
|
|
|
-+ depends on CBUS_TAHVO && USB
|
|
|
-+ tristate "Support for Tahvo USB transceiver"
|
|
|
-+ ---help---
|
|
|
-+ If you want Tahvo support for USB transceiver, say Y or M here.
|
|
|
-+
|
|
|
-+config CBUS_TAHVO_USB_HOST_BY_DEFAULT
|
|
|
-+ depends on CBUS_TAHVO_USB && USB_OTG
|
|
|
-+ boolean "Device in USB host mode by default"
|
|
|
-+ ---help---
|
|
|
-+ Say Y here, if you want the device to enter USB host mode
|
|
|
-+ by default on bootup.
|
|
|
-+
|
|
|
-+config CBUS_RETU
|
|
|
-+ depends on CBUS
|
|
|
-+ bool "Support for Retu"
|
|
|
-+ ---help---
|
|
|
-+ Retu is a mixed signal ASIC with some system features
|
|
|
-+
|
|
|
-+ If you want Retu support, you should say Y here.
|
|
|
-+
|
|
|
-+config CBUS_RETU_POWERBUTTON
|
|
|
-+ depends on CBUS_RETU
|
|
|
-+ bool "Support for Retu power button"
|
|
|
-+ ---help---
|
|
|
-+ The power button on Nokia 770 is connected to the Retu ASIC.
|
|
|
-+
|
|
|
-+ If you want support for the Retu power button, you should say Y here.
|
|
|
-+
|
|
|
-+config CBUS_RETU_RTC
|
|
|
-+ depends on CBUS_RETU && RTC_CLASS
|
|
|
-+ tristate "Support for Retu pseudo-RTC"
|
|
|
-+ ---help---
|
|
|
-+ Say Y here if you want support for the device that alleges to be an
|
|
|
-+ RTC in Retu. This will expose a sysfs interface for it.
|
|
|
-+
|
|
|
-+config CBUS_RETU_WDT
|
|
|
-+ depends on CBUS_RETU && SYSFS && WATCHDOG
|
|
|
-+ tristate "Support for Retu watchdog timer"
|
|
|
-+ ---help---
|
|
|
-+ Say Y here if you want support for the watchdog in Retu. This will
|
|
|
-+ expose a sysfs interface to grok it.
|
|
|
-+
|
|
|
-+config CBUS_RETU_HEADSET
|
|
|
-+ depends on CBUS_RETU && SYSFS
|
|
|
-+ tristate "Support for headset detection with Retu/Vilma"
|
|
|
-+ ---help---
|
|
|
-+ Say Y here if you want support detecting a headset that's connected
|
|
|
-+ to Retu/Vilma. Detection state and events are exposed through
|
|
|
-+ sysfs.
|
|
|
-+
|
|
|
-+endmenu
|
|
|
---- /dev/null
|
|
|
-+++ b/drivers/cbus/Makefile
|
|
|
-@@ -0,0 +1,13 @@
|
|
|
-+#
|
|
|
-+# Makefile for CBUS.
|
|
|
-+#
|
|
|
-+
|
|
|
-+obj-$(CONFIG_CBUS) += cbus.o
|
|
|
-+obj-$(CONFIG_CBUS_TAHVO) += tahvo.o
|
|
|
-+obj-$(CONFIG_CBUS_RETU) += retu.o
|
|
|
-+obj-$(CONFIG_CBUS_TAHVO_USB) += tahvo-usb.o
|
|
|
-+
|
|
|
-+obj-$(CONFIG_CBUS_RETU_POWERBUTTON) += retu-pwrbutton.o
|
|
|
-+obj-$(CONFIG_CBUS_RETU_RTC) += retu-rtc.o
|
|
|
-+obj-$(CONFIG_CBUS_RETU_WDT) += retu-wdt.o
|
|
|
-+obj-$(CONFIG_CBUS_RETU_HEADSET) += retu-headset.o
|
|
|
---- /dev/null
|
|
|
-+++ b/drivers/cbus/retu.c
|
|
|
-@@ -0,0 +1,544 @@
|
|
|
-+/**
|
|
|
-+ * drivers/cbus/retu.c
|
|
|
-+ *
|
|
|
-+ * Support functions for Retu ASIC
|
|
|
-+ *
|
|
|
-+ * Copyright (C) 2004, 2005 Nokia Corporation
|
|
|
-+ *
|
|
|
-+ * Written by Juha Yrjölä <[email protected]>,
|
|
|
-+ * David Weinehall <[email protected]>, and
|
|
|
-+ * Mikko Ylinen <[email protected]>
|
|
|
-+ *
|
|
|
-+ * This file is subject to the terms and conditions of the GNU General
|
|
|
-+ * Public License. See the file "COPYING" in the main directory of this
|
|
|
-+ * archive for more details.
|
|
|
-+ *
|
|
|
-+ * This program is distributed in the hope that it will be useful,
|
|
|
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
-+ * GNU General Public License for more details.
|
|
|
-+ *
|
|
|
-+ * You should have received a copy of the GNU General Public License
|
|
|
-+ * along with this program; if not, write to the Free Software
|
|
|
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
-+ */
|
|
|
-+
|
|
|
-+#include <linux/module.h>
|
|
|
-+#include <linux/init.h>
|
|
|
-+
|
|
|
-+#include <linux/slab.h>
|
|
|
-+#include <linux/kernel.h>
|
|
|
-+#include <linux/errno.h>
|
|
|
-+#include <linux/device.h>
|
|
|
-+#include <linux/miscdevice.h>
|
|
|
-+#include <linux/poll.h>
|
|
|
-+#include <linux/fs.h>
|
|
|
-+#include <linux/mutex.h>
|
|
|
-+#include <linux/irq.h>
|
|
|
-+#include <linux/interrupt.h>
|
|
|
-+#include <linux/platform_device.h>
|
|
|
-+#include <linux/gpio.h>
|
|
|
-+
|
|
|
-+#include <asm/uaccess.h>
|
|
|
-+#include <asm/mach-types.h>
|
|
|
-+
|
|
|
-+#include <plat/mux.h>
|
|
|
-+#include <plat/board.h>
|
|
|
-+#include <plat/cbus.h>
|
|
|
-+
|
|
|
-+#include "cbus.h"
|
|
|
-+#include "retu.h"
|
|
|
-+
|
|
|
-+struct retu {
|
|
|
-+ /* Device lock */
|
|
|
-+ struct mutex mutex;
|
|
|
-+ struct device *dev;
|
|
|
-+
|
|
|
-+ int devid;
|
|
|
-+
|
|
|
-+ int irq_base;
|
|
|
-+ int irq_end;
|
|
|
-+
|
|
|
-+ int irq;
|
|
|
-+
|
|
|
-+ int ack;
|
|
|
-+ bool ack_pending;
|
|
|
-+
|
|
|
-+ int mask;
|
|
|
-+ bool mask_pending;
|
|
|
-+
|
|
|
-+ bool is_vilma;
|
|
|
-+};
|
|
|
-+
|
|
|
-+static struct retu *the_retu;
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * __retu_read_reg - Read a value from a register in Retu
|
|
|
-+ * @retu: pointer to retu structure
|
|
|
-+ * @reg: the register address to read from
|
|
|
-+ */
|
|
|
-+static int __retu_read_reg(struct retu *retu, unsigned reg)
|
|
|
-+{
|
|
|
-+ return cbus_read_reg(retu->devid, reg);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * __retu_write_reg - Writes a value to a register in Retu
|
|
|
-+ * @retu: pointer to retu structure
|
|
|
-+ * @reg: the register address to write to
|
|
|
-+ * @val: the value to write to the register
|
|
|
-+ */
|
|
|
-+static void __retu_write_reg(struct retu *retu, unsigned reg, u16 val)
|
|
|
-+{
|
|
|
-+ cbus_write_reg(retu->devid, reg, val);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * retu_read_reg - Read a value from a register in Retu
|
|
|
-+ * @child: device pointer for the calling child
|
|
|
-+ * @reg: the register to read from
|
|
|
-+ *
|
|
|
-+ * This function returns the contents of the specified register
|
|
|
-+ */
|
|
|
-+int retu_read_reg(struct device *child, unsigned reg)
|
|
|
-+{
|
|
|
-+ struct retu *retu = dev_get_drvdata(child->parent);
|
|
|
-+
|
|
|
-+ return __retu_read_reg(retu, reg);
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL_GPL(retu_read_reg);
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * retu_write_reg - Write a value to a register in Retu
|
|
|
-+ * @child: the pointer to our calling child
|
|
|
-+ * @reg: the register to write to
|
|
|
-+ * @val: the value to write to the register
|
|
|
-+ *
|
|
|
-+ * This function writes a value to the specified register
|
|
|
-+ */
|
|
|
-+void retu_write_reg(struct device *child, unsigned reg, u16 val)
|
|
|
-+{
|
|
|
-+ struct retu *retu = dev_get_drvdata(child->parent);
|
|
|
-+
|
|
|
-+ __retu_write_reg(retu, reg, val);
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL_GPL(retu_write_reg);
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * retu_set_clear_reg_bits - helper function to read/set/clear bits
|
|
|
-+ * @child: device pointer to calling child
|
|
|
-+ * @reg: the register address
|
|
|
-+ * @set: mask for setting bits
|
|
|
-+ * @clear: mask for clearing bits
|
|
|
-+ */
|
|
|
-+void retu_set_clear_reg_bits(struct device *child, unsigned reg, u16 set,
|
|
|
-+ u16 clear)
|
|
|
-+{
|
|
|
-+ struct retu *retu = dev_get_drvdata(child->parent);
|
|
|
-+ u16 w;
|
|
|
-+
|
|
|
-+ mutex_lock(&retu->mutex);
|
|
|
-+ w = __retu_read_reg(retu, reg);
|
|
|
-+ w &= ~clear;
|
|
|
-+ w |= set;
|
|
|
-+ __retu_write_reg(retu, reg, w);
|
|
|
-+ mutex_unlock(&retu->mutex);
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL_GPL(retu_set_clear_reg_bits);
|
|
|
-+
|
|
|
-+#define ADC_MAX_CHAN_NUMBER 13
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * retu_read_adc - Reads AD conversion result
|
|
|
-+ * @child: device pointer to calling child
|
|
|
-+ * @channel: the ADC channel to read from
|
|
|
-+ */
|
|
|
-+int retu_read_adc(struct device *child, int channel)
|
|
|
-+{
|
|
|
-+ struct retu *retu = dev_get_drvdata(child->parent);
|
|
|
-+ int res;
|
|
|
-+
|
|
|
-+ if (!retu)
|
|
|
-+ return -ENODEV;
|
|
|
-+
|
|
|
-+ if (channel < 0 || channel > ADC_MAX_CHAN_NUMBER)
|
|
|
-+ return -EINVAL;
|
|
|
-+
|
|
|
-+ mutex_lock(&retu->mutex);
|
|
|
-+
|
|
|
-+ if ((channel == 8) && retu->is_vilma) {
|
|
|
-+ int scr = __retu_read_reg(retu, RETU_REG_ADCSCR);
|
|
|
-+ int ch = (__retu_read_reg(retu, RETU_REG_ADCR) >> 10) & 0xf;
|
|
|
-+ if (((scr & 0xff) != 0) && (ch != 8))
|
|
|
-+ __retu_write_reg(retu, RETU_REG_ADCSCR, (scr & ~0xff));
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ /* Select the channel and read result */
|
|
|
-+ __retu_write_reg(retu, RETU_REG_ADCR, channel << 10);
|
|
|
-+ res = __retu_read_reg(retu, RETU_REG_ADCR) & 0x3ff;
|
|
|
-+
|
|
|
-+ if (retu->is_vilma)
|
|
|
-+ __retu_write_reg(retu, RETU_REG_ADCR, (1 << 13));
|
|
|
-+
|
|
|
-+ /* Unlock retu */
|
|
|
-+ mutex_unlock(&retu->mutex);
|
|
|
-+
|
|
|
-+ return res;
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL_GPL(retu_read_adc);
|
|
|
-+
|
|
|
-+static irqreturn_t retu_irq_handler(int irq, void *_retu)
|
|
|
-+{
|
|
|
-+ struct retu *retu = _retu;
|
|
|
-+
|
|
|
-+ int i;
|
|
|
-+
|
|
|
-+ u16 idr;
|
|
|
-+ u16 imr;
|
|
|
-+
|
|
|
-+ idr = __retu_read_reg(retu, RETU_REG_IDR);
|
|
|
-+ imr = __retu_read_reg(retu, RETU_REG_IMR);
|
|
|
-+ idr &= ~imr;
|
|
|
-+
|
|
|
-+ if (!idr) {
|
|
|
-+ dev_vdbg(retu->dev, "No IRQ, spurious?\n");
|
|
|
-+ return IRQ_NONE;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ for (i = 0; idr != 0; i++, idr >>= 1) {
|
|
|
-+ if (!(idr & 1))
|
|
|
-+ continue;
|
|
|
-+
|
|
|
-+ handle_nested_irq(i);
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return IRQ_HANDLED;
|
|
|
-+}
|
|
|
-+
|
|
|
-+/* -------------------------------------------------------------------------- */
|
|
|
-+
|
|
|
-+static void retu_irq_mask(struct irq_data *data)
|
|
|
-+{
|
|
|
-+ struct retu *retu = irq_data_get_irq_chip_data(data);
|
|
|
-+ int irq = data->irq;
|
|
|
-+
|
|
|
-+ retu->mask |= (1 << (irq - retu->irq_base));
|
|
|
-+ retu->mask_pending = true;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void retu_irq_unmask(struct irq_data *data)
|
|
|
-+{
|
|
|
-+ struct retu *retu = irq_data_get_irq_chip_data(data);
|
|
|
-+ int irq = data->irq;
|
|
|
-+
|
|
|
-+ retu->mask &= ~(1 << (irq - retu->irq_base));
|
|
|
-+ retu->mask_pending = true;
|
|
|
-+
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void retu_irq_ack(struct irq_data *data)
|
|
|
-+{
|
|
|
-+ struct retu *retu = irq_data_get_irq_chip_data(data);
|
|
|
-+ int irq = data->irq;
|
|
|
-+
|
|
|
-+ retu->ack |= (1 << (irq - retu->irq_base));
|
|
|
-+ retu->ack_pending = true;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void retu_bus_lock(struct irq_data *data)
|
|
|
-+{
|
|
|
-+ struct retu *retu = irq_data_get_irq_chip_data(data);
|
|
|
-+
|
|
|
-+ mutex_lock(&retu->mutex);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void retu_bus_sync_unlock(struct irq_data *data)
|
|
|
-+{
|
|
|
-+ struct retu *retu = irq_data_get_irq_chip_data(data);
|
|
|
-+
|
|
|
-+ if (retu->mask_pending) {
|
|
|
-+ __retu_write_reg(retu, RETU_REG_IMR, retu->mask);
|
|
|
-+ retu->mask_pending = false;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ if (retu->ack_pending) {
|
|
|
-+ __retu_write_reg(retu, RETU_REG_IDR, retu->ack);
|
|
|
-+ retu->ack_pending = false;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ mutex_unlock(&retu->mutex);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static struct irq_chip retu_irq_chip = {
|
|
|
-+ .name = "retu",
|
|
|
-+ .irq_bus_lock = retu_bus_lock,
|
|
|
-+ .irq_bus_sync_unlock = retu_bus_sync_unlock,
|
|
|
-+ .irq_mask = retu_irq_mask,
|
|
|
-+ .irq_unmask = retu_irq_unmask,
|
|
|
-+ .irq_ack = retu_irq_ack,
|
|
|
-+};
|
|
|
-+
|
|
|
-+static inline void retu_irq_setup(int irq)
|
|
|
-+{
|
|
|
-+#ifdef CONFIG_ARM
|
|
|
-+ set_irq_flags(irq, IRQF_VALID);
|
|
|
-+#else
|
|
|
-+ set_irq_noprobe(irq);
|
|
|
-+#endif
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void retu_irq_init(struct retu *retu)
|
|
|
-+{
|
|
|
-+ int base = retu->irq_base;
|
|
|
-+ int end = retu->irq_end;
|
|
|
-+ int irq;
|
|
|
-+
|
|
|
-+ for (irq = base; irq < end; irq++) {
|
|
|
-+ set_irq_chip_data(irq, retu);
|
|
|
-+ set_irq_chip_and_handler(irq, &retu_irq_chip,
|
|
|
-+ handle_simple_irq);
|
|
|
-+ set_irq_nested_thread(irq, 1);
|
|
|
-+ retu_irq_setup(irq);
|
|
|
-+ }
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void retu_irq_exit(struct retu *retu)
|
|
|
-+{
|
|
|
-+ int base = retu->irq_base;
|
|
|
-+ int end = retu->irq_end;
|
|
|
-+ int irq;
|
|
|
-+
|
|
|
-+ for (irq = base; irq < end; irq++) {
|
|
|
-+#ifdef CONFIG_ARM
|
|
|
-+ set_irq_flags(irq, 0);
|
|
|
-+#endif
|
|
|
-+ set_irq_chip_and_handler(irq, NULL, NULL);
|
|
|
-+ set_irq_chip_data(irq, NULL);
|
|
|
-+ }
|
|
|
-+}
|
|
|
-+
|
|
|
-+/* -------------------------------------------------------------------------- */
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * retu_power_off - Shut down power to system
|
|
|
-+ *
|
|
|
-+ * This function puts the system in power off state
|
|
|
-+ */
|
|
|
-+static void retu_power_off(void)
|
|
|
-+{
|
|
|
-+ struct retu *retu = the_retu;
|
|
|
-+ unsigned reg;
|
|
|
-+
|
|
|
-+ reg = __retu_read_reg(retu, RETU_REG_CC1);
|
|
|
-+
|
|
|
-+ /* Ignore power button state */
|
|
|
-+ __retu_write_reg(retu, RETU_REG_CC1, reg | 2);
|
|
|
-+ /* Expire watchdog immediately */
|
|
|
-+ __retu_write_reg(retu, RETU_REG_WATCHDOG, 0);
|
|
|
-+ /* Wait for poweroff*/
|
|
|
-+ for (;;);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static struct resource generic_resources[] = {
|
|
|
-+ {
|
|
|
-+ .start = -EINVAL, /* fixed later */
|
|
|
-+ .flags = IORESOURCE_IRQ,
|
|
|
-+ },
|
|
|
-+ {
|
|
|
-+ .start = -EINVAL, /* fixed later */
|
|
|
-+ .flags = IORESOURCE_IRQ,
|
|
|
-+ },
|
|
|
-+};
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * retu_allocate_child - Allocates one Retu child
|
|
|
-+ * @name: name of new child
|
|
|
-+ * @parent: parent device for this child
|
|
|
-+ */
|
|
|
-+static struct device *retu_allocate_child(char *name, struct device *parent,
|
|
|
-+ int irq_base, int irq1, int irq2, int num)
|
|
|
-+{
|
|
|
-+ struct platform_device *pdev;
|
|
|
-+ int status;
|
|
|
-+
|
|
|
-+ pdev = platform_device_alloc(name, -1);
|
|
|
-+ if (!pdev) {
|
|
|
-+ dev_dbg(parent, "can't allocate %s\n", name);
|
|
|
-+ goto err;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ pdev->dev.parent = parent;
|
|
|
-+
|
|
|
-+ if (num) {
|
|
|
-+ generic_resources[0].start = irq_base + irq1;
|
|
|
-+ generic_resources[1].start = irq_base + irq2;
|
|
|
-+
|
|
|
-+ status = platform_device_add_resources(pdev,
|
|
|
-+ generic_resources, num);
|
|
|
-+ if (status < 0) {
|
|
|
-+ dev_dbg(parent, "can't add resources to %s\n", name);
|
|
|
-+ goto err;
|
|
|
-+ }
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ status = platform_device_add(pdev);
|
|
|
-+ if (status < 0) {
|
|
|
-+ dev_dbg(parent, "can't add %s\n", name);
|
|
|
-+ goto err;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return &pdev->dev;
|
|
|
-+
|
|
|
-+err:
|
|
|
-+ platform_device_put(pdev);
|
|
|
-+
|
|
|
-+ return NULL;
|
|
|
-+}
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * retu_allocate_children - Allocates Retu's children
|
|
|
-+ */
|
|
|
-+static int retu_allocate_children(struct device *parent, int irq_base)
|
|
|
-+{
|
|
|
-+ struct device *child;
|
|
|
-+
|
|
|
-+ child = retu_allocate_child("retu-pwrbutton", parent, irq_base,
|
|
|
-+ RETU_INT_PWR, -1, 1);
|
|
|
-+ if (!child)
|
|
|
-+ return -ENOMEM;
|
|
|
-+
|
|
|
-+ child = retu_allocate_child("retu-headset", parent, irq_base,
|
|
|
-+ RETU_INT_HOOK, -1, 1);
|
|
|
-+ if (!child)
|
|
|
-+ return -ENOMEM;
|
|
|
-+
|
|
|
-+ child = retu_allocate_child("retu-rtc", parent, irq_base,
|
|
|
-+ RETU_INT_RTCS, RETU_INT_RTCA, 2);
|
|
|
-+ if (!child)
|
|
|
-+ return -ENOMEM;
|
|
|
-+
|
|
|
-+ child = retu_allocate_child("retu-wdt", parent, -1, -1, -1, 0);
|
|
|
-+ if (!child)
|
|
|
-+ return -ENOMEM;
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * retu_probe - Probe for Retu ASIC
|
|
|
-+ * @dev: the Retu device
|
|
|
-+ *
|
|
|
-+ * Probe for the Retu ASIC and allocate memory
|
|
|
-+ * for its device-struct if found
|
|
|
-+ */
|
|
|
-+static int __init retu_probe(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ struct retu *retu;
|
|
|
-+ struct cbus_retu_platform_data *pdata = pdev->dev.platform_data;
|
|
|
-+
|
|
|
-+ int ret = -ENOMEM;
|
|
|
-+ int rev;
|
|
|
-+
|
|
|
-+ retu = kzalloc(sizeof(*retu), GFP_KERNEL);
|
|
|
-+ if (!retu) {
|
|
|
-+ dev_err(&pdev->dev, "not enough memory\n");
|
|
|
-+ goto err0;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ platform_set_drvdata(pdev, retu);
|
|
|
-+
|
|
|
-+ retu->irq = platform_get_irq(pdev, 0);
|
|
|
-+ retu->irq_base = pdata->irq_base;
|
|
|
-+ retu->irq_end = pdata->irq_end;
|
|
|
-+ retu->devid = pdata->devid;
|
|
|
-+ the_retu = retu;
|
|
|
-+
|
|
|
-+ mutex_init(&retu->mutex);
|
|
|
-+
|
|
|
-+ retu_irq_init(retu);
|
|
|
-+
|
|
|
-+ rev = __retu_read_reg(retu, RETU_REG_ASICR) & 0xff;
|
|
|
-+ if (rev & (1 << 7))
|
|
|
-+ retu->is_vilma = true;
|
|
|
-+
|
|
|
-+ dev_info(&pdev->dev, "%s v%d.%d found\n",
|
|
|
-+ retu->is_vilma ? "Vilma" : "Retu",
|
|
|
-+ (rev >> 4) & 0x07, rev & 0x0f);
|
|
|
-+
|
|
|
-+ /* Mask all RETU interrupts */
|
|
|
-+ __retu_write_reg(retu, RETU_REG_IMR, 0xffff);
|
|
|
-+
|
|
|
-+ ret = request_threaded_irq(retu->irq, NULL, retu_irq_handler, 0,
|
|
|
-+ "retu", retu);
|
|
|
-+ if (ret < 0) {
|
|
|
-+ dev_err(&pdev->dev, "Unable to register IRQ handler\n");
|
|
|
-+ goto err1;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ set_irq_wake(retu->irq, 1);
|
|
|
-+
|
|
|
-+ /* Register power off function */
|
|
|
-+ pm_power_off = retu_power_off;
|
|
|
-+
|
|
|
-+ ret = retu_allocate_children(&pdev->dev, retu->irq_base);
|
|
|
-+ if (ret < 0) {
|
|
|
-+ dev_err(&pdev->dev, "Unable to allocate Retu children\n");
|
|
|
-+ goto err2;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+
|
|
|
-+err2:
|
|
|
-+ pm_power_off = NULL;
|
|
|
-+ __retu_write_reg(retu, RETU_REG_IMR, 0xffff);
|
|
|
-+ free_irq(retu->irq, retu);
|
|
|
-+
|
|
|
-+err1:
|
|
|
-+ kfree(retu);
|
|
|
-+ the_retu = NULL;
|
|
|
-+
|
|
|
-+err0:
|
|
|
-+ return ret;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int __exit retu_remove(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ struct retu *retu = platform_get_drvdata(pdev);
|
|
|
-+
|
|
|
-+ pm_power_off = NULL;
|
|
|
-+ the_retu = NULL;
|
|
|
-+
|
|
|
-+ /* Mask all RETU interrupts */
|
|
|
-+ __retu_write_reg(retu, RETU_REG_IMR, 0xffff);
|
|
|
-+
|
|
|
-+ free_irq(retu->irq, retu);
|
|
|
-+ retu_irq_exit(retu);
|
|
|
-+ kfree(retu);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static struct platform_driver retu_driver = {
|
|
|
-+ .remove = __exit_p(retu_remove),
|
|
|
-+ .driver = {
|
|
|
-+ .name = "retu",
|
|
|
-+ },
|
|
|
-+};
|
|
|
-+
|
|
|
-+static int __init retu_init(void)
|
|
|
-+{
|
|
|
-+ return platform_driver_probe(&retu_driver, retu_probe);
|
|
|
-+}
|
|
|
-+subsys_initcall(retu_init);
|
|
|
-+
|
|
|
-+static void __exit retu_exit(void)
|
|
|
-+{
|
|
|
-+ platform_driver_unregister(&retu_driver);
|
|
|
-+}
|
|
|
-+module_exit(retu_exit);
|
|
|
-+
|
|
|
-+MODULE_DESCRIPTION("Retu ASIC control");
|
|
|
-+MODULE_LICENSE("GPL");
|
|
|
-+MODULE_AUTHOR("Juha Yrjölä");
|
|
|
-+MODULE_AUTHOR("David Weinehall");
|
|
|
-+MODULE_AUTHOR("Mikko Ylinen");
|
|
|
---- /dev/null
|
|
|
-+++ b/drivers/cbus/retu.h
|
|
|
-@@ -0,0 +1,66 @@
|
|
|
-+/**
|
|
|
-+ * drivers/cbus/retu.h
|
|
|
-+ *
|
|
|
-+ * Copyright (C) 2004, 2005 Nokia Corporation
|
|
|
-+ *
|
|
|
-+ * Written by Juha Yrjölä <[email protected]> and
|
|
|
-+ * David Weinehall <[email protected]>
|
|
|
-+ *
|
|
|
-+ * This file is subject to the terms and conditions of the GNU General
|
|
|
-+ * Public License. See the file "COPYING" in the main directory of this
|
|
|
-+ * archive for more details.
|
|
|
-+ *
|
|
|
-+ * This program is distributed in the hope that it will be useful,
|
|
|
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
-+ * GNU General Public License for more details.
|
|
|
-+
|
|
|
-+ * You should have received a copy of the GNU General Public License
|
|
|
-+ * along with this program; if not, write to the Free Software
|
|
|
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
-+ */
|
|
|
-+
|
|
|
-+#ifndef __DRIVERS_CBUS_RETU_H
|
|
|
-+#define __DRIVERS_CBUS_RETU_H
|
|
|
-+
|
|
|
-+#include <linux/types.h>
|
|
|
-+
|
|
|
-+/* Registers */
|
|
|
-+#define RETU_REG_ASICR 0x00 /* ASIC ID & revision */
|
|
|
-+#define RETU_REG_IDR 0x01 /* Interrupt ID */
|
|
|
-+#define RETU_REG_IMR 0x02 /* Interrupt mask */
|
|
|
-+#define RETU_REG_RTCDSR 0x03 /* RTC seconds register */
|
|
|
-+#define RETU_REG_RTCHMR 0x04 /* RTC hours and minutes register */
|
|
|
-+#define RETU_REG_RTCHMAR 0x05 /* RTC hours and minutes alarm and time set register */
|
|
|
-+#define RETU_REG_RTCCALR 0x06 /* RTC calibration register */
|
|
|
-+#define RETU_REG_ADCR 0x08 /* ADC result */
|
|
|
-+#define RETU_REG_ADCSCR 0x09 /* ADC sample ctrl */
|
|
|
-+#define RETU_REG_CC1 0x0d /* Common control register 1 */
|
|
|
-+#define RETU_REG_CC2 0x0e /* Common control register 2 */
|
|
|
-+#define RETU_REG_CTRL_CLR 0x0f /* Regulator clear register */
|
|
|
-+#define RETU_REG_CTRL_SET 0x10 /* Regulator set register */
|
|
|
-+#define RETU_REG_STATUS 0x16 /* Status register */
|
|
|
-+#define RETU_REG_WATCHDOG 0x17 /* Watchdog register */
|
|
|
-+#define RETU_REG_AUDTXR 0x18 /* Audio Codec Tx register */
|
|
|
-+#define RETU_REG_MAX 0x1f
|
|
|
-+
|
|
|
-+/* Interrupt sources */
|
|
|
-+#define RETU_INT_PWR 0
|
|
|
-+#define RETU_INT_CHAR 1
|
|
|
-+#define RETU_INT_RTCS 2
|
|
|
-+#define RETU_INT_RTCM 3
|
|
|
-+#define RETU_INT_RTCD 4
|
|
|
-+#define RETU_INT_RTCA 5
|
|
|
-+#define RETU_INT_HOOK 6
|
|
|
-+#define RETU_INT_HEAD 7
|
|
|
-+#define RETU_INT_ADCS 8
|
|
|
-+
|
|
|
-+#define MAX_RETU_IRQ_HANDLERS 16
|
|
|
-+
|
|
|
-+int retu_read_reg(struct device *child, unsigned reg);
|
|
|
-+void retu_write_reg(struct device *child, unsigned reg, u16 val);
|
|
|
-+void retu_set_clear_reg_bits(struct device *child, unsigned reg, u16 set,
|
|
|
-+ u16 clear);
|
|
|
-+int retu_read_adc(struct device *child, int channel);
|
|
|
-+
|
|
|
-+#endif /* __DRIVERS_CBUS_RETU_H */
|
|
|
---- /dev/null
|
|
|
-+++ b/drivers/cbus/retu-headset.c
|
|
|
-@@ -0,0 +1,359 @@
|
|
|
-+/**
|
|
|
-+ * Retu/Vilma headset detection
|
|
|
-+ *
|
|
|
-+ * Copyright (C) 2006 Nokia Corporation
|
|
|
-+ *
|
|
|
-+ * Written by Juha Yrjölä
|
|
|
-+ *
|
|
|
-+ * This file is subject to the terms and conditions of the GNU General
|
|
|
-+ * Public License. See the file "COPYING" in the main directory of this
|
|
|
-+ * archive for more details.
|
|
|
-+ *
|
|
|
-+ * This program is distributed in the hope that it will be useful,
|
|
|
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
-+ * GNU General Public License for more details.
|
|
|
-+ *
|
|
|
-+ * You should have received a copy of the GNU General Public License
|
|
|
-+ * along with this program; if not, write to the Free Software
|
|
|
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
-+ */
|
|
|
-+
|
|
|
-+#include <linux/module.h>
|
|
|
-+#include <linux/init.h>
|
|
|
-+#include <linux/kernel.h>
|
|
|
-+#include <linux/irq.h>
|
|
|
-+#include <linux/interrupt.h>
|
|
|
-+#include <linux/slab.h>
|
|
|
-+#include <linux/delay.h>
|
|
|
-+#include <linux/input.h>
|
|
|
-+#include <linux/platform_device.h>
|
|
|
-+
|
|
|
-+#include "retu.h"
|
|
|
-+
|
|
|
-+#define RETU_ADC_CHANNEL_HOOKDET 0x05
|
|
|
-+
|
|
|
-+#define RETU_HEADSET_KEY KEY_PHONE
|
|
|
-+
|
|
|
-+struct retu_headset {
|
|
|
-+ spinlock_t lock;
|
|
|
-+ struct mutex mutex;
|
|
|
-+ struct device *dev;
|
|
|
-+ struct input_dev *idev;
|
|
|
-+ unsigned bias_enabled;
|
|
|
-+ unsigned detection_enabled;
|
|
|
-+ unsigned pressed;
|
|
|
-+ struct timer_list enable_timer;
|
|
|
-+ struct timer_list detect_timer;
|
|
|
-+ int irq;
|
|
|
-+};
|
|
|
-+
|
|
|
-+static void retu_headset_set_bias(struct retu_headset *hs, int enable)
|
|
|
-+{
|
|
|
-+ if (enable) {
|
|
|
-+ retu_set_clear_reg_bits(hs->dev, RETU_REG_AUDTXR,
|
|
|
-+ (1 << 0) | (1 << 1), 0);
|
|
|
-+ msleep(2);
|
|
|
-+ retu_set_clear_reg_bits(hs->dev, RETU_REG_AUDTXR,
|
|
|
-+ 1 << 3, 0);
|
|
|
-+ } else {
|
|
|
-+ retu_set_clear_reg_bits(hs->dev, RETU_REG_AUDTXR, 0,
|
|
|
-+ (1 << 0) | (1 << 1) | (1 << 3));
|
|
|
-+ }
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void retu_headset_enable(struct retu_headset *hs)
|
|
|
-+{
|
|
|
-+ mutex_lock(&hs->mutex);
|
|
|
-+ if (!hs->bias_enabled) {
|
|
|
-+ hs->bias_enabled = 1;
|
|
|
-+ retu_headset_set_bias(hs, 1);
|
|
|
-+ }
|
|
|
-+ mutex_unlock(&hs->mutex);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void retu_headset_disable(struct retu_headset *hs)
|
|
|
-+{
|
|
|
-+ mutex_lock(&hs->mutex);
|
|
|
-+ if (hs->bias_enabled) {
|
|
|
-+ hs->bias_enabled = 0;
|
|
|
-+ retu_headset_set_bias(hs, 0);
|
|
|
-+ }
|
|
|
-+ mutex_unlock(&hs->mutex);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void retu_headset_det_enable(struct retu_headset *hs)
|
|
|
-+{
|
|
|
-+ mutex_lock(&hs->mutex);
|
|
|
-+ if (!hs->detection_enabled) {
|
|
|
-+ hs->detection_enabled = 1;
|
|
|
-+ retu_set_clear_reg_bits(hs->dev, RETU_REG_CC1,
|
|
|
-+ (1 << 10) | (1 << 8), 0);
|
|
|
-+ }
|
|
|
-+ mutex_unlock(&hs->mutex);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void retu_headset_det_disable(struct retu_headset *hs)
|
|
|
-+{
|
|
|
-+ unsigned long flags;
|
|
|
-+
|
|
|
-+ mutex_lock(&hs->mutex);
|
|
|
-+ if (hs->detection_enabled) {
|
|
|
-+ hs->detection_enabled = 0;
|
|
|
-+ del_timer_sync(&hs->enable_timer);
|
|
|
-+ del_timer_sync(&hs->detect_timer);
|
|
|
-+ spin_lock_irqsave(&hs->lock, flags);
|
|
|
-+ if (hs->pressed)
|
|
|
-+ input_report_key(hs->idev, RETU_HEADSET_KEY, 0);
|
|
|
-+ spin_unlock_irqrestore(&hs->lock, flags);
|
|
|
-+ retu_set_clear_reg_bits(hs->dev, RETU_REG_CC1, 0,
|
|
|
-+ (1 << 10) | (1 << 8));
|
|
|
-+ }
|
|
|
-+ mutex_unlock(&hs->mutex);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static ssize_t retu_headset_hookdet_show(struct device *dev,
|
|
|
-+ struct device_attribute *attr,
|
|
|
-+ char *buf)
|
|
|
-+{
|
|
|
-+ int val;
|
|
|
-+
|
|
|
-+ val = retu_read_adc(dev, RETU_ADC_CHANNEL_HOOKDET);
|
|
|
-+ return sprintf(buf, "%d\n", val);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static DEVICE_ATTR(hookdet, S_IRUGO, retu_headset_hookdet_show, NULL);
|
|
|
-+
|
|
|
-+static ssize_t retu_headset_enable_show(struct device *dev,
|
|
|
-+ struct device_attribute *attr,
|
|
|
-+ char *buf)
|
|
|
-+{
|
|
|
-+ struct retu_headset *hs = dev_get_drvdata(dev);
|
|
|
-+
|
|
|
-+ return sprintf(buf, "%u\n", hs->bias_enabled);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static ssize_t retu_headset_enable_store(struct device *dev,
|
|
|
-+ struct device_attribute *attr,
|
|
|
-+ const char *buf, size_t count)
|
|
|
-+{
|
|
|
-+ struct retu_headset *hs = dev_get_drvdata(dev);
|
|
|
-+ int enable;
|
|
|
-+
|
|
|
-+ if (sscanf(buf, "%u", &enable) != 1)
|
|
|
-+ return -EINVAL;
|
|
|
-+ if (enable)
|
|
|
-+ retu_headset_enable(hs);
|
|
|
-+ else
|
|
|
-+ retu_headset_disable(hs);
|
|
|
-+ return count;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR | S_IWGRP,
|
|
|
-+ retu_headset_enable_show, retu_headset_enable_store);
|
|
|
-+
|
|
|
-+static ssize_t retu_headset_enable_det_show(struct device *dev,
|
|
|
-+ struct device_attribute *attr,
|
|
|
-+ char *buf)
|
|
|
-+{
|
|
|
-+ struct retu_headset *hs = dev_get_drvdata(dev);
|
|
|
-+
|
|
|
-+ return sprintf(buf, "%u\n", hs->detection_enabled);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static ssize_t retu_headset_enable_det_store(struct device *dev,
|
|
|
-+ struct device_attribute *attr,
|
|
|
-+ const char *buf, size_t count)
|
|
|
-+{
|
|
|
-+ struct retu_headset *hs = dev_get_drvdata(dev);
|
|
|
-+ int enable;
|
|
|
-+
|
|
|
-+ if (sscanf(buf, "%u", &enable) != 1)
|
|
|
-+ return -EINVAL;
|
|
|
-+ if (enable)
|
|
|
-+ retu_headset_det_enable(hs);
|
|
|
-+ else
|
|
|
-+ retu_headset_det_disable(hs);
|
|
|
-+ return count;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static DEVICE_ATTR(enable_det, S_IRUGO | S_IWUSR | S_IWGRP,
|
|
|
-+ retu_headset_enable_det_show,
|
|
|
-+ retu_headset_enable_det_store);
|
|
|
-+
|
|
|
-+static irqreturn_t retu_headset_hook_interrupt(int irq, void *_hs)
|
|
|
-+{
|
|
|
-+ struct retu_headset *hs = _hs;
|
|
|
-+ unsigned long flags;
|
|
|
-+
|
|
|
-+ spin_lock_irqsave(&hs->lock, flags);
|
|
|
-+ if (!hs->pressed) {
|
|
|
-+ /* Headset button was just pressed down. */
|
|
|
-+ hs->pressed = 1;
|
|
|
-+ input_report_key(hs->idev, RETU_HEADSET_KEY, 1);
|
|
|
-+ }
|
|
|
-+ spin_unlock_irqrestore(&hs->lock, flags);
|
|
|
-+ retu_set_clear_reg_bits(hs->dev, RETU_REG_CC1, 0,
|
|
|
-+ (1 << 10) | (1 << 8));
|
|
|
-+ mod_timer(&hs->enable_timer, jiffies + msecs_to_jiffies(50));
|
|
|
-+
|
|
|
-+ return IRQ_HANDLED;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void retu_headset_enable_timer(unsigned long arg)
|
|
|
-+{
|
|
|
-+ struct retu_headset *hs = (struct retu_headset *) arg;
|
|
|
-+
|
|
|
-+ retu_set_clear_reg_bits(hs->dev, RETU_REG_CC1,
|
|
|
-+ (1 << 10) | (1 << 8), 0);
|
|
|
-+ mod_timer(&hs->detect_timer, jiffies + msecs_to_jiffies(350));
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void retu_headset_detect_timer(unsigned long arg)
|
|
|
-+{
|
|
|
-+ struct retu_headset *hs = (struct retu_headset *) arg;
|
|
|
-+ unsigned long flags;
|
|
|
-+
|
|
|
-+ spin_lock_irqsave(&hs->lock, flags);
|
|
|
-+ if (hs->pressed) {
|
|
|
-+ hs->pressed = 0;
|
|
|
-+ input_report_key(hs->idev, RETU_HEADSET_KEY, 0);
|
|
|
-+ }
|
|
|
-+ spin_unlock_irqrestore(&hs->lock, flags);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int __init retu_headset_probe(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ struct retu_headset *hs;
|
|
|
-+ int irq;
|
|
|
-+ int r;
|
|
|
-+
|
|
|
-+ hs = kzalloc(sizeof(*hs), GFP_KERNEL);
|
|
|
-+ if (hs == NULL)
|
|
|
-+ return -ENOMEM;
|
|
|
-+
|
|
|
-+ hs->dev = &pdev->dev;
|
|
|
-+
|
|
|
-+ hs->idev = input_allocate_device();
|
|
|
-+ if (hs->idev == NULL) {
|
|
|
-+ r = -ENOMEM;
|
|
|
-+ goto err1;
|
|
|
-+ }
|
|
|
-+ hs->idev->name = "retu-headset";
|
|
|
-+ hs->idev->dev.parent = &pdev->dev;
|
|
|
-+ set_bit(EV_KEY, hs->idev->evbit);
|
|
|
-+ set_bit(RETU_HEADSET_KEY, hs->idev->keybit);
|
|
|
-+ r = input_register_device(hs->idev);
|
|
|
-+ if (r < 0)
|
|
|
-+ goto err2;
|
|
|
-+
|
|
|
-+ r = device_create_file(&pdev->dev, &dev_attr_hookdet);
|
|
|
-+ if (r < 0)
|
|
|
-+ goto err3;
|
|
|
-+ r = device_create_file(&pdev->dev, &dev_attr_enable);
|
|
|
-+ if (r < 0)
|
|
|
-+ goto err4;
|
|
|
-+ r = device_create_file(&pdev->dev, &dev_attr_enable_det);
|
|
|
-+ if (r < 0)
|
|
|
-+ goto err5;
|
|
|
-+ platform_set_drvdata(pdev, hs);
|
|
|
-+
|
|
|
-+ spin_lock_init(&hs->lock);
|
|
|
-+ mutex_init(&hs->mutex);
|
|
|
-+ setup_timer(&hs->enable_timer, retu_headset_enable_timer,
|
|
|
-+ (unsigned long) hs);
|
|
|
-+ setup_timer(&hs->detect_timer, retu_headset_detect_timer,
|
|
|
-+ (unsigned long) hs);
|
|
|
-+
|
|
|
-+ irq = platform_get_irq(pdev, 0);
|
|
|
-+ hs->irq = irq;
|
|
|
-+
|
|
|
-+ r = request_threaded_irq(irq, NULL, retu_headset_hook_interrupt, 0,
|
|
|
-+ "hookdet", hs);
|
|
|
-+ if (r != 0) {
|
|
|
-+ dev_err(&pdev->dev, "hookdet IRQ not available\n");
|
|
|
-+ goto err6;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+err6:
|
|
|
-+ device_remove_file(&pdev->dev, &dev_attr_enable_det);
|
|
|
-+err5:
|
|
|
-+ device_remove_file(&pdev->dev, &dev_attr_enable);
|
|
|
-+err4:
|
|
|
-+ device_remove_file(&pdev->dev, &dev_attr_hookdet);
|
|
|
-+err3:
|
|
|
-+ input_unregister_device(hs->idev);
|
|
|
-+err2:
|
|
|
-+ input_free_device(hs->idev);
|
|
|
-+err1:
|
|
|
-+ kfree(hs);
|
|
|
-+ return r;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int retu_headset_remove(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ struct retu_headset *hs = platform_get_drvdata(pdev);
|
|
|
-+
|
|
|
-+ device_remove_file(&pdev->dev, &dev_attr_hookdet);
|
|
|
-+ device_remove_file(&pdev->dev, &dev_attr_enable);
|
|
|
-+ device_remove_file(&pdev->dev, &dev_attr_enable_det);
|
|
|
-+ retu_headset_disable(hs);
|
|
|
-+ retu_headset_det_disable(hs);
|
|
|
-+ free_irq(hs->irq, hs);
|
|
|
-+ input_unregister_device(hs->idev);
|
|
|
-+ input_free_device(hs->idev);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int retu_headset_suspend(struct platform_device *pdev,
|
|
|
-+ pm_message_t mesg)
|
|
|
-+{
|
|
|
-+ struct retu_headset *hs = platform_get_drvdata(pdev);
|
|
|
-+
|
|
|
-+ mutex_lock(&hs->mutex);
|
|
|
-+ if (hs->bias_enabled)
|
|
|
-+ retu_headset_set_bias(hs, 0);
|
|
|
-+ mutex_unlock(&hs->mutex);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int retu_headset_resume(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ struct retu_headset *hs = platform_get_drvdata(pdev);
|
|
|
-+
|
|
|
-+ mutex_lock(&hs->mutex);
|
|
|
-+ if (hs->bias_enabled)
|
|
|
-+ retu_headset_set_bias(hs, 1);
|
|
|
-+ mutex_unlock(&hs->mutex);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static struct platform_driver retu_headset_driver = {
|
|
|
-+ .remove = retu_headset_remove,
|
|
|
-+ .suspend = retu_headset_suspend,
|
|
|
-+ .resume = retu_headset_resume,
|
|
|
-+ .driver = {
|
|
|
-+ .name = "retu-headset",
|
|
|
-+ },
|
|
|
-+};
|
|
|
-+
|
|
|
-+static int __init retu_headset_init(void)
|
|
|
-+{
|
|
|
-+ return platform_driver_probe(&retu_headset_driver, retu_headset_probe);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void __exit retu_headset_exit(void)
|
|
|
-+{
|
|
|
-+ platform_driver_unregister(&retu_headset_driver);
|
|
|
-+}
|
|
|
-+
|
|
|
-+module_init(retu_headset_init);
|
|
|
-+module_exit(retu_headset_exit);
|
|
|
-+
|
|
|
-+MODULE_DESCRIPTION("Retu/Vilma headset detection");
|
|
|
-+MODULE_LICENSE("GPL");
|
|
|
-+MODULE_AUTHOR("Juha Yrjölä");
|
|
|
---- /dev/null
|
|
|
-+++ b/drivers/cbus/retu-pwrbutton.c
|
|
|
-@@ -0,0 +1,165 @@
|
|
|
-+/**
|
|
|
-+ * drivers/cbus/retu-pwrbutton.c
|
|
|
-+ *
|
|
|
-+ * Driver for sending retu power button event to input-layer
|
|
|
-+ *
|
|
|
-+ * Copyright (C) 2004-2010 Nokia Corporation
|
|
|
-+ *
|
|
|
-+ * Written by
|
|
|
-+ * Ari Saastamoinen <[email protected]>
|
|
|
-+ * Juha Yrjola <[email protected]>
|
|
|
-+ *
|
|
|
-+ * Contact: Felipe Balbi <[email protected]>
|
|
|
-+ *
|
|
|
-+ * This file is subject to the terms and conditions of the GNU General
|
|
|
-+ * Public License. See the file "COPYING" in the main directory of this
|
|
|
-+ * archive for more details.
|
|
|
-+ *
|
|
|
-+ * This program is distributed in the hope that it will be useful,
|
|
|
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
-+ * GNU General Public License for more details.
|
|
|
-+ *
|
|
|
-+ * You should have received a copy of the GNU General Public License
|
|
|
-+ * along with this program; if not, write to the Free Software
|
|
|
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
-+ */
|
|
|
-+
|
|
|
-+#include <linux/module.h>
|
|
|
-+#include <linux/init.h>
|
|
|
-+#include <linux/kernel.h>
|
|
|
-+#include <linux/errno.h>
|
|
|
-+#include <linux/input.h>
|
|
|
-+#include <linux/jiffies.h>
|
|
|
-+#include <linux/bitops.h>
|
|
|
-+#include <linux/irq.h>
|
|
|
-+#include <linux/interrupt.h>
|
|
|
-+#include <linux/platform_device.h>
|
|
|
-+#include <linux/slab.h>
|
|
|
-+
|
|
|
-+#include "retu.h"
|
|
|
-+
|
|
|
-+#define RETU_STATUS_PWRONX (1 << 5)
|
|
|
-+
|
|
|
-+#define PWRBTN_DELAY 20
|
|
|
-+#define PWRBTN_UP 0
|
|
|
-+#define PWRBTN_PRESSED 1
|
|
|
-+
|
|
|
-+struct retu_pwrbutton {
|
|
|
-+ struct input_dev *idev;
|
|
|
-+ struct device *dev;
|
|
|
-+
|
|
|
-+ int state;
|
|
|
-+ int irq;
|
|
|
-+};
|
|
|
-+
|
|
|
-+static irqreturn_t retubutton_irq(int irq, void *_pwr)
|
|
|
-+{
|
|
|
-+ struct retu_pwrbutton *pwr = _pwr;
|
|
|
-+ int state;
|
|
|
-+
|
|
|
-+ if (retu_read_reg(pwr->dev, RETU_REG_STATUS) & RETU_STATUS_PWRONX)
|
|
|
-+ state = PWRBTN_UP;
|
|
|
-+ else
|
|
|
-+ state = PWRBTN_PRESSED;
|
|
|
-+
|
|
|
-+ if (pwr->state != state) {
|
|
|
-+ input_report_key(pwr->idev, KEY_POWER, state);
|
|
|
-+ input_sync(pwr->idev);
|
|
|
-+ pwr->state = state;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return IRQ_HANDLED;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int __init retubutton_probe(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ struct retu_pwrbutton *pwr;
|
|
|
-+ int ret = 0;
|
|
|
-+
|
|
|
-+ pwr = kzalloc(sizeof(*pwr), GFP_KERNEL);
|
|
|
-+ if (!pwr) {
|
|
|
-+ dev_err(&pdev->dev, "not enough memory\n");
|
|
|
-+ ret = -ENOMEM;
|
|
|
-+ goto err0;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ pwr->dev = &pdev->dev;
|
|
|
-+ pwr->irq = platform_get_irq(pdev, 0);
|
|
|
-+ platform_set_drvdata(pdev, pwr);
|
|
|
-+
|
|
|
-+ ret = request_threaded_irq(pwr->irq, NULL, retubutton_irq, 0,
|
|
|
-+ "retu-pwrbutton", pwr);
|
|
|
-+ if (ret < 0) {
|
|
|
-+ dev_err(&pdev->dev, "Cannot allocate irq\n");
|
|
|
-+ goto err1;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ pwr->idev = input_allocate_device();
|
|
|
-+ if (!pwr->idev) {
|
|
|
-+ dev_err(&pdev->dev, "can't allocate input device\n");
|
|
|
-+ ret = -ENOMEM;
|
|
|
-+ goto err2;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ pwr->idev->evbit[0] = BIT_MASK(EV_KEY);
|
|
|
-+ pwr->idev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
|
|
|
-+ pwr->idev->name = "retu-pwrbutton";
|
|
|
-+
|
|
|
-+ ret = input_register_device(pwr->idev);
|
|
|
-+ if (ret < 0) {
|
|
|
-+ dev_err(&pdev->dev, "failed to register input device\n");
|
|
|
-+ goto err3;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+
|
|
|
-+err3:
|
|
|
-+ input_free_device(pwr->idev);
|
|
|
-+
|
|
|
-+err2:
|
|
|
-+ free_irq(pwr->irq, pwr);
|
|
|
-+
|
|
|
-+err1:
|
|
|
-+ kfree(pwr);
|
|
|
-+
|
|
|
-+err0:
|
|
|
-+ return ret;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int __exit retubutton_remove(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ struct retu_pwrbutton *pwr = platform_get_drvdata(pdev);
|
|
|
-+
|
|
|
-+ free_irq(pwr->irq, pwr);
|
|
|
-+ input_unregister_device(pwr->idev);
|
|
|
-+ input_free_device(pwr->idev);
|
|
|
-+ kfree(pwr);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static struct platform_driver retu_pwrbutton_driver = {
|
|
|
-+ .remove = __exit_p(retubutton_remove),
|
|
|
-+ .driver = {
|
|
|
-+ .name = "retu-pwrbutton",
|
|
|
-+ },
|
|
|
-+};
|
|
|
-+
|
|
|
-+static int __init retubutton_init(void)
|
|
|
-+{
|
|
|
-+ return platform_driver_probe(&retu_pwrbutton_driver, retubutton_probe);
|
|
|
-+}
|
|
|
-+module_init(retubutton_init);
|
|
|
-+
|
|
|
-+static void __exit retubutton_exit(void)
|
|
|
-+{
|
|
|
-+ platform_driver_unregister(&retu_pwrbutton_driver);
|
|
|
-+}
|
|
|
-+module_exit(retubutton_exit);
|
|
|
-+
|
|
|
-+MODULE_DESCRIPTION("Retu Power Button");
|
|
|
-+MODULE_LICENSE("GPL");
|
|
|
-+MODULE_AUTHOR("Ari Saastamoinen");
|
|
|
-+MODULE_AUTHOR("Felipe Balbi <[email protected]>");
|
|
|
-+
|
|
|
---- /dev/null
|
|
|
-+++ b/drivers/cbus/retu-rtc.c
|
|
|
-@@ -0,0 +1,287 @@
|
|
|
-+/**
|
|
|
-+ * drivers/cbus/retu-rtc.c
|
|
|
-+ *
|
|
|
-+ * Support for Retu RTC
|
|
|
-+ *
|
|
|
-+ * Copyright (C) 2004, 2005 Nokia Corporation
|
|
|
-+ *
|
|
|
-+ * Written by Paul Mundt <[email protected]> and
|
|
|
-+ * Igor Stoppa <[email protected]>
|
|
|
-+ *
|
|
|
-+ * The Retu RTC is essentially a partial read-only RTC that gives us Retu's
|
|
|
-+ * idea of what time actually is. It's left as a userspace excercise to map
|
|
|
-+ * this back to time in the real world and ensure that calibration settings
|
|
|
-+ * are sane to compensate for any horrible drift (on account of not being able
|
|
|
-+ * to set the clock to anything).
|
|
|
-+ *
|
|
|
-+ * Days are semi-writeable. Namely, Retu will only track 255 days for us
|
|
|
-+ * consecutively, after which the counter is explicitly stuck at 255 until
|
|
|
-+ * someone comes along and clears it with a write. In the event that no one
|
|
|
-+ * comes along and clears it, we no longer have any idea what day it is.
|
|
|
-+ *
|
|
|
-+ * This file is subject to the terms and conditions of the GNU General
|
|
|
-+ * Public License. See the file "COPYING" in the main directory of this
|
|
|
-+ * archive for more details.
|
|
|
-+ *
|
|
|
-+ * This program is distributed in the hope that it will be useful,
|
|
|
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
-+ * GNU General Public License for more details.
|
|
|
-+ *
|
|
|
-+ * You should have received a copy of the GNU General Public License
|
|
|
-+ * along with this program; if not, write to the Free Software
|
|
|
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
-+ */
|
|
|
-+
|
|
|
-+#include <linux/device.h>
|
|
|
-+#include <linux/init.h>
|
|
|
-+#include <linux/kernel.h>
|
|
|
-+#include <linux/slab.h>
|
|
|
-+#include <linux/module.h>
|
|
|
-+#include <linux/platform_device.h>
|
|
|
-+#include <linux/mutex.h>
|
|
|
-+#include <linux/rtc.h>
|
|
|
-+
|
|
|
-+#include "cbus.h"
|
|
|
-+#include "retu.h"
|
|
|
-+
|
|
|
-+struct retu_rtc {
|
|
|
-+ /* device lock */
|
|
|
-+ struct mutex mutex;
|
|
|
-+ struct device *dev;
|
|
|
-+ struct rtc_device *rtc;
|
|
|
-+
|
|
|
-+ u16 alarm_expired;
|
|
|
-+ int irq_rtcs;
|
|
|
-+ int irq_rtca;
|
|
|
-+};
|
|
|
-+
|
|
|
-+static void retu_rtc_do_reset(struct retu_rtc *rtc)
|
|
|
-+{
|
|
|
-+ u16 ccr1;
|
|
|
-+
|
|
|
-+ ccr1 = retu_read_reg(rtc->dev, RETU_REG_CC1);
|
|
|
-+ /* RTC in reset */
|
|
|
-+ retu_write_reg(rtc->dev, RETU_REG_CC1, ccr1 | 0x0001);
|
|
|
-+ /* RTC in normal operating mode */
|
|
|
-+ retu_write_reg(rtc->dev, RETU_REG_CC1, ccr1 & ~0x0001);
|
|
|
-+
|
|
|
-+ /* Disable alarm and RTC WD */
|
|
|
-+ retu_write_reg(rtc->dev, RETU_REG_RTCHMAR, 0x7f3f);
|
|
|
-+ /* Set Calibration register to default value */
|
|
|
-+ retu_write_reg(rtc->dev, RETU_REG_RTCCALR, 0x00c0);
|
|
|
-+
|
|
|
-+ rtc->alarm_expired = 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static irqreturn_t retu_rtc_interrupt(int irq, void *_rtc)
|
|
|
-+{
|
|
|
-+ struct retu_rtc *rtc = _rtc;
|
|
|
-+
|
|
|
-+ mutex_lock(&rtc->mutex);
|
|
|
-+ rtc->alarm_expired = 1;
|
|
|
-+ retu_write_reg(rtc->dev, RETU_REG_RTCHMAR, (24 << 8) | 60);
|
|
|
-+ mutex_unlock(&rtc->mutex);
|
|
|
-+
|
|
|
-+ return IRQ_HANDLED;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int retu_rtc_init_irq(struct retu_rtc *rtc)
|
|
|
-+{
|
|
|
-+ int irq;
|
|
|
-+ int ret;
|
|
|
-+
|
|
|
-+ irq = platform_get_irq(to_platform_device(rtc->dev), 0);
|
|
|
-+ rtc->irq_rtcs = irq;
|
|
|
-+
|
|
|
-+ irq = platform_get_irq(to_platform_device(rtc->dev), 1);
|
|
|
-+ rtc->irq_rtca = irq;
|
|
|
-+
|
|
|
-+ ret = request_threaded_irq(rtc->irq_rtcs, NULL, retu_rtc_interrupt,
|
|
|
-+ 0, "RTCS", rtc);
|
|
|
-+ if (ret != 0)
|
|
|
-+ return ret;
|
|
|
-+
|
|
|
-+ ret = request_threaded_irq(rtc->irq_rtca, NULL, retu_rtc_interrupt,
|
|
|
-+ 0, "RTCA", rtc);
|
|
|
-+ if (ret != 0) {
|
|
|
-+ free_irq(rtc->irq_rtcs, rtc);
|
|
|
-+ return ret;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int retu_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
|
|
|
-+{
|
|
|
-+ struct retu_rtc *rtc = dev_get_drvdata(dev);
|
|
|
-+ u16 chmar;
|
|
|
-+
|
|
|
-+ mutex_lock(&rtc->mutex);
|
|
|
-+
|
|
|
-+ chmar = ((alm->time.tm_hour & 0x1f) << 8) | (alm->time.tm_min & 0x3f);
|
|
|
-+ retu_write_reg(rtc->dev, RETU_REG_RTCHMAR, chmar);
|
|
|
-+
|
|
|
-+ mutex_unlock(&rtc->mutex);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int retu_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
|
|
|
-+{
|
|
|
-+ struct retu_rtc *rtc = dev_get_drvdata(dev);
|
|
|
-+ u16 chmar;
|
|
|
-+
|
|
|
-+ mutex_lock(&rtc->mutex);
|
|
|
-+
|
|
|
-+ chmar = retu_read_reg(rtc->dev, RETU_REG_RTCHMAR);
|
|
|
-+
|
|
|
-+ alm->time.tm_hour = (chmar >> 8) & 0x1f;
|
|
|
-+ alm->time.tm_min = chmar & 0x3f;
|
|
|
-+ alm->enabled = !!rtc->alarm_expired;
|
|
|
-+
|
|
|
-+ mutex_unlock(&rtc->mutex);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int retu_rtc_set_time(struct device *dev, struct rtc_time *tm)
|
|
|
-+{
|
|
|
-+ struct retu_rtc *rtc = dev_get_drvdata(dev);
|
|
|
-+ u16 dsr;
|
|
|
-+ u16 hmr;
|
|
|
-+
|
|
|
-+ dsr = ((tm->tm_mday & 0xff) << 8) | (tm->tm_hour & 0xff);
|
|
|
-+ hmr = ((tm->tm_min & 0xff) << 8) | (tm->tm_sec & 0xff);
|
|
|
-+
|
|
|
-+ mutex_lock(&rtc->mutex);
|
|
|
-+
|
|
|
-+ retu_write_reg(rtc->dev, RETU_REG_RTCDSR, dsr);
|
|
|
-+ retu_write_reg(rtc->dev, RETU_REG_RTCHMR, hmr);
|
|
|
-+
|
|
|
-+ mutex_unlock(&rtc->mutex);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int retu_rtc_read_time(struct device *dev, struct rtc_time *tm)
|
|
|
-+{
|
|
|
-+ struct retu_rtc *rtc = dev_get_drvdata(dev);
|
|
|
-+ u16 dsr;
|
|
|
-+ u16 hmr;
|
|
|
-+
|
|
|
-+ /*
|
|
|
-+ * DSR holds days and hours
|
|
|
-+ * HMR hols minutes and seconds
|
|
|
-+ *
|
|
|
-+ * both are 16 bit registers with 8-bit for each field.
|
|
|
-+ */
|
|
|
-+
|
|
|
-+ mutex_lock(&rtc->mutex);
|
|
|
-+
|
|
|
-+ dsr = retu_read_reg(rtc->dev, RETU_REG_RTCDSR);
|
|
|
-+ hmr = retu_read_reg(rtc->dev, RETU_REG_RTCHMR);
|
|
|
-+
|
|
|
-+ tm->tm_sec = hmr & 0xff;
|
|
|
-+ tm->tm_min = hmr >> 8;
|
|
|
-+ tm->tm_hour = dsr & 0xff;
|
|
|
-+ tm->tm_mday = dsr >> 8;
|
|
|
-+
|
|
|
-+ mutex_unlock(&rtc->mutex);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static struct rtc_class_ops retu_rtc_ops = {
|
|
|
-+ .read_time = retu_rtc_read_time,
|
|
|
-+ .set_time = retu_rtc_set_time,
|
|
|
-+ .read_alarm = retu_rtc_read_alarm,
|
|
|
-+ .set_alarm = retu_rtc_set_alarm,
|
|
|
-+};
|
|
|
-+
|
|
|
-+static int __init retu_rtc_probe(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ struct retu_rtc *rtc;
|
|
|
-+ int r;
|
|
|
-+
|
|
|
-+ rtc = kzalloc(sizeof(*rtc), GFP_KERNEL);
|
|
|
-+ if (!rtc) {
|
|
|
-+ dev_err(&pdev->dev, "not enough memory\n");
|
|
|
-+ r = -ENOMEM;
|
|
|
-+ goto err0;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ rtc->dev = &pdev->dev;
|
|
|
-+ platform_set_drvdata(pdev, rtc);
|
|
|
-+ mutex_init(&rtc->mutex);
|
|
|
-+
|
|
|
-+ rtc->alarm_expired = retu_read_reg(rtc->dev, RETU_REG_IDR) &
|
|
|
-+ (0x1 << RETU_INT_RTCA);
|
|
|
-+
|
|
|
-+ r = retu_rtc_init_irq(rtc);
|
|
|
-+ if (r < 0) {
|
|
|
-+ dev_err(&pdev->dev, "failed to request retu irq\n");
|
|
|
-+ goto err1;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ /* If the calibration register is zero, we've probably lost power */
|
|
|
-+ if (!(retu_read_reg(rtc->dev, RETU_REG_RTCCALR) & 0x00ff))
|
|
|
-+ retu_rtc_do_reset(rtc);
|
|
|
-+
|
|
|
-+ rtc->rtc = rtc_device_register(pdev->name, &pdev->dev, &
|
|
|
-+ retu_rtc_ops, THIS_MODULE);
|
|
|
-+ if (IS_ERR(rtc->rtc)) {
|
|
|
-+ dev_err(&pdev->dev, "can't register RTC device\n");
|
|
|
-+ goto err2;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+
|
|
|
-+err2:
|
|
|
-+ free_irq(rtc->irq_rtcs, rtc);
|
|
|
-+ free_irq(rtc->irq_rtca, rtc);
|
|
|
-+
|
|
|
-+err1:
|
|
|
-+ kfree(rtc);
|
|
|
-+
|
|
|
-+err0:
|
|
|
-+ return r;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int __devexit retu_rtc_remove(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ struct retu_rtc *rtc = platform_get_drvdata(pdev);
|
|
|
-+
|
|
|
-+ free_irq(rtc->irq_rtcs, rtc);
|
|
|
-+ free_irq(rtc->irq_rtca, rtc);
|
|
|
-+ rtc_device_unregister(rtc->rtc);
|
|
|
-+ kfree(rtc);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static struct platform_driver retu_rtc_driver = {
|
|
|
-+ .remove = __exit_p(retu_rtc_remove),
|
|
|
-+ .driver = {
|
|
|
-+ .name = "retu-rtc",
|
|
|
-+ },
|
|
|
-+};
|
|
|
-+
|
|
|
-+static int __init retu_rtc_init(void)
|
|
|
-+{
|
|
|
-+ return platform_driver_probe(&retu_rtc_driver, retu_rtc_probe);
|
|
|
-+}
|
|
|
-+module_init(retu_rtc_init);
|
|
|
-+
|
|
|
-+static void __exit retu_rtc_exit(void)
|
|
|
-+{
|
|
|
-+ platform_driver_unregister(&retu_rtc_driver);
|
|
|
-+}
|
|
|
-+module_exit(retu_rtc_exit);
|
|
|
-+
|
|
|
-+MODULE_DESCRIPTION("Retu RTC");
|
|
|
-+MODULE_LICENSE("GPL");
|
|
|
-+MODULE_AUTHOR("Paul Mundt");
|
|
|
-+MODULE_AUTHOR("Igor Stoppa");
|
|
|
-+MODULE_AUTHOR("Felipe Balbi <[email protected]>");
|
|
|
-+
|
|
|
---- /dev/null
|
|
|
-+++ b/drivers/cbus/retu-wdt.c
|
|
|
-@@ -0,0 +1,358 @@
|
|
|
-+/**
|
|
|
-+ * drivers/cbus/retu-wdt.c
|
|
|
-+ *
|
|
|
-+ * Driver for Retu watchdog
|
|
|
-+ *
|
|
|
-+ * Copyright (C) 2004, 2005 Nokia Corporation
|
|
|
-+ *
|
|
|
-+ * Written by Amit Kucheria <[email protected]>
|
|
|
-+ *
|
|
|
-+ * This file is subject to the terms and conditions of the GNU General
|
|
|
-+ * Public License. See the file "COPYING" in the main directory of this
|
|
|
-+ * archive for more details.
|
|
|
-+ *
|
|
|
-+ * This program is distributed in the hope that it will be useful,
|
|
|
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
-+ * GNU General Public License for more details.
|
|
|
-+ *
|
|
|
-+ * You should have received a copy of the GNU General Public License
|
|
|
-+ * along with this program; if not, write to the Free Software
|
|
|
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
-+ */
|
|
|
-+
|
|
|
-+#include <linux/kernel.h>
|
|
|
-+#include <linux/slab.h>
|
|
|
-+#include <linux/module.h>
|
|
|
-+#include <linux/device.h>
|
|
|
-+#include <linux/init.h>
|
|
|
-+#include <linux/fs.h>
|
|
|
-+#include <linux/io.h>
|
|
|
-+#include <linux/platform_device.h>
|
|
|
-+
|
|
|
-+#include <linux/completion.h>
|
|
|
-+#include <linux/errno.h>
|
|
|
-+#include <linux/moduleparam.h>
|
|
|
-+#include <linux/miscdevice.h>
|
|
|
-+#include <linux/watchdog.h>
|
|
|
-+
|
|
|
-+#include <asm/uaccess.h>
|
|
|
-+
|
|
|
-+#include <plat/prcm.h>
|
|
|
-+
|
|
|
-+#include "cbus.h"
|
|
|
-+#include "retu.h"
|
|
|
-+
|
|
|
-+/* Watchdog timeout in seconds */
|
|
|
-+#define RETU_WDT_MIN_TIMER 0
|
|
|
-+#define RETU_WDT_DEFAULT_TIMER 32
|
|
|
-+#define RETU_WDT_MAX_TIMER 63
|
|
|
-+
|
|
|
-+static DEFINE_MUTEX(retu_wdt_mutex);
|
|
|
-+
|
|
|
-+/* Current period of watchdog */
|
|
|
-+static unsigned int period_val = RETU_WDT_DEFAULT_TIMER;
|
|
|
-+static int counter_param = RETU_WDT_MAX_TIMER;
|
|
|
-+
|
|
|
-+struct retu_wdt_dev {
|
|
|
-+ struct device *dev;
|
|
|
-+ int users;
|
|
|
-+ struct miscdevice retu_wdt_miscdev;
|
|
|
-+ struct timer_list ping_timer;
|
|
|
-+};
|
|
|
-+
|
|
|
-+static struct retu_wdt_dev *retu_wdt;
|
|
|
-+
|
|
|
-+static void retu_wdt_set_ping_timer(unsigned long enable);
|
|
|
-+
|
|
|
-+static int _retu_modify_counter(unsigned int new)
|
|
|
-+{
|
|
|
-+ if (retu_wdt)
|
|
|
-+ retu_write_reg(retu_wdt->dev, RETU_REG_WATCHDOG, (u16)new);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int retu_modify_counter(unsigned int new)
|
|
|
-+{
|
|
|
-+ if (new < RETU_WDT_MIN_TIMER || new > RETU_WDT_MAX_TIMER)
|
|
|
-+ return -EINVAL;
|
|
|
-+
|
|
|
-+ mutex_lock(&retu_wdt_mutex);
|
|
|
-+ period_val = new;
|
|
|
-+ _retu_modify_counter(period_val);
|
|
|
-+ mutex_unlock(&retu_wdt_mutex);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static ssize_t retu_wdt_period_show(struct device *dev,
|
|
|
-+ struct device_attribute *attr, char *buf)
|
|
|
-+{
|
|
|
-+ /* Show current max counter */
|
|
|
-+ return sprintf(buf, "%u\n", (u16)period_val);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Note: This inteface is non-standard and likely to disappear!
|
|
|
-+ * Use /dev/watchdog instead, that's the standard.
|
|
|
-+ */
|
|
|
-+static ssize_t retu_wdt_period_store(struct device *dev,
|
|
|
-+ struct device_attribute *attr,
|
|
|
-+ const char *buf, size_t count)
|
|
|
-+{
|
|
|
-+ unsigned int new_period;
|
|
|
-+ int ret;
|
|
|
-+
|
|
|
-+#ifdef CONFIG_WATCHDOG_NOWAYOUT
|
|
|
-+ retu_wdt_set_ping_timer(0);
|
|
|
-+#endif
|
|
|
-+
|
|
|
-+ if (sscanf(buf, "%u", &new_period) != 1) {
|
|
|
-+ printk(KERN_ALERT "retu_wdt_period_store: Invalid input\n");
|
|
|
-+ return -EINVAL;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ ret = retu_modify_counter(new_period);
|
|
|
-+ if (ret < 0)
|
|
|
-+ return ret;
|
|
|
-+
|
|
|
-+ return strnlen(buf, count);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static ssize_t retu_wdt_counter_show(struct device *dev,
|
|
|
-+ struct device_attribute *attr, char *buf)
|
|
|
-+{
|
|
|
-+ u16 counter;
|
|
|
-+
|
|
|
-+ /* Show current value in watchdog counter */
|
|
|
-+ counter = retu_read_reg(dev, RETU_REG_WATCHDOG);
|
|
|
-+
|
|
|
-+ /* Only the 5 LSB are important */
|
|
|
-+ return snprintf(buf, PAGE_SIZE, "%u\n", (counter & 0x3F));
|
|
|
-+}
|
|
|
-+
|
|
|
-+static DEVICE_ATTR(period, S_IRUGO | S_IWUSR, retu_wdt_period_show, \
|
|
|
-+ retu_wdt_period_store);
|
|
|
-+static DEVICE_ATTR(counter, S_IRUGO, retu_wdt_counter_show, NULL);
|
|
|
-+
|
|
|
-+/*----------------------------------------------------------------------------*/
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Since retu watchdog cannot be disabled in hardware, we must kick it
|
|
|
-+ * with a timer until userspace watchdog software takes over. Do this
|
|
|
-+ * unless /dev/watchdog is open or CONFIG_WATCHDOG_NOWAYOUT is set.
|
|
|
-+ */
|
|
|
-+static void retu_wdt_set_ping_timer(unsigned long enable)
|
|
|
-+{
|
|
|
-+ _retu_modify_counter(RETU_WDT_MAX_TIMER);
|
|
|
-+ if (enable)
|
|
|
-+ mod_timer(&retu_wdt->ping_timer,
|
|
|
-+ jiffies + RETU_WDT_DEFAULT_TIMER * HZ);
|
|
|
-+ else
|
|
|
-+ del_timer_sync(&retu_wdt->ping_timer);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int retu_wdt_open(struct inode *inode, struct file *file)
|
|
|
-+{
|
|
|
-+ if (test_and_set_bit(1, (unsigned long *)&(retu_wdt->users)))
|
|
|
-+ return -EBUSY;
|
|
|
-+
|
|
|
-+ file->private_data = (void *)retu_wdt;
|
|
|
-+ retu_wdt_set_ping_timer(0);
|
|
|
-+
|
|
|
-+ return nonseekable_open(inode, file);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int retu_wdt_release(struct inode *inode, struct file *file)
|
|
|
-+{
|
|
|
-+ struct retu_wdt_dev *wdev = file->private_data;
|
|
|
-+
|
|
|
-+#ifndef CONFIG_WATCHDOG_NOWAYOUT
|
|
|
-+ retu_wdt_set_ping_timer(1);
|
|
|
-+#endif
|
|
|
-+ wdev->users = 0;
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static ssize_t retu_wdt_write(struct file *file, const char __user *data,
|
|
|
-+ size_t len, loff_t *ppos)
|
|
|
-+{
|
|
|
-+ if (len)
|
|
|
-+ retu_modify_counter(RETU_WDT_MAX_TIMER);
|
|
|
-+
|
|
|
-+ return len;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static long retu_wdt_ioctl(struct file *file, unsigned int cmd,
|
|
|
-+ unsigned long arg)
|
|
|
-+{
|
|
|
-+ int new_margin;
|
|
|
-+
|
|
|
-+ static struct watchdog_info ident = {
|
|
|
-+ .identity = "Retu Watchdog",
|
|
|
-+ .options = WDIOF_SETTIMEOUT,
|
|
|
-+ .firmware_version = 0,
|
|
|
-+ };
|
|
|
-+
|
|
|
-+ switch (cmd) {
|
|
|
-+ default:
|
|
|
-+ return -ENOTTY;
|
|
|
-+ case WDIOC_GETSUPPORT:
|
|
|
-+ return copy_to_user((struct watchdog_info __user *)arg, &ident,
|
|
|
-+ sizeof(ident));
|
|
|
-+ case WDIOC_GETSTATUS:
|
|
|
-+ return put_user(0, (int __user *)arg);
|
|
|
-+ case WDIOC_GETBOOTSTATUS:
|
|
|
-+ if (cpu_is_omap16xx())
|
|
|
-+ return put_user(omap_readw(ARM_SYSST),
|
|
|
-+ (int __user *)arg);
|
|
|
-+ if (cpu_is_omap24xx())
|
|
|
-+ return put_user(omap_prcm_get_reset_sources(),
|
|
|
-+ (int __user *)arg);
|
|
|
-+ case WDIOC_KEEPALIVE:
|
|
|
-+ retu_modify_counter(RETU_WDT_MAX_TIMER);
|
|
|
-+ break;
|
|
|
-+ case WDIOC_SETTIMEOUT:
|
|
|
-+ if (get_user(new_margin, (int __user *)arg))
|
|
|
-+ return -EFAULT;
|
|
|
-+ retu_modify_counter(new_margin);
|
|
|
-+ /* Fall through */
|
|
|
-+ case WDIOC_GETTIMEOUT:
|
|
|
-+ return put_user(period_val, (int __user *)arg);
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+/* Start kicking retu watchdog until user space starts doing the kicking */
|
|
|
-+static int __devinit retu_wdt_ping(void)
|
|
|
-+{
|
|
|
-+#ifdef CONFIG_WATCHDOG_NOWAYOUT
|
|
|
-+ retu_modify_counter(RETU_WDT_MAX_TIMER);
|
|
|
-+#else
|
|
|
-+ retu_wdt_set_ping_timer(1);
|
|
|
-+#endif
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static const struct file_operations retu_wdt_fops = {
|
|
|
-+ .owner = THIS_MODULE,
|
|
|
-+ .write = retu_wdt_write,
|
|
|
-+ .unlocked_ioctl = retu_wdt_ioctl,
|
|
|
-+ .open = retu_wdt_open,
|
|
|
-+ .release = retu_wdt_release,
|
|
|
-+};
|
|
|
-+
|
|
|
-+/*----------------------------------------------------------------------------*/
|
|
|
-+
|
|
|
-+static int __init retu_wdt_probe(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ struct retu_wdt_dev *wdev;
|
|
|
-+ int ret;
|
|
|
-+
|
|
|
-+ wdev = kzalloc(sizeof(struct retu_wdt_dev), GFP_KERNEL);
|
|
|
-+ if (!wdev)
|
|
|
-+ return -ENOMEM;
|
|
|
-+
|
|
|
-+ wdev->dev = &pdev->dev;
|
|
|
-+ wdev->users = 0;
|
|
|
-+
|
|
|
-+ ret = device_create_file(&pdev->dev, &dev_attr_period);
|
|
|
-+ if (ret) {
|
|
|
-+ dev_err(&pdev->dev, "Error creating sysfs period\n");
|
|
|
-+ goto free1;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ ret = device_create_file(&pdev->dev, &dev_attr_counter);
|
|
|
-+ if (ret) {
|
|
|
-+ dev_err(&pdev->dev, "Error creating sysfs counter\n");
|
|
|
-+ goto free2;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ platform_set_drvdata(pdev, wdev);
|
|
|
-+ retu_wdt = wdev;
|
|
|
-+ wdev->retu_wdt_miscdev.parent = &pdev->dev;
|
|
|
-+ wdev->retu_wdt_miscdev.minor = WATCHDOG_MINOR;
|
|
|
-+ wdev->retu_wdt_miscdev.name = "watchdog";
|
|
|
-+ wdev->retu_wdt_miscdev.fops = &retu_wdt_fops;
|
|
|
-+
|
|
|
-+ ret = misc_register(&(wdev->retu_wdt_miscdev));
|
|
|
-+ if (ret)
|
|
|
-+ goto free3;
|
|
|
-+
|
|
|
-+ setup_timer(&wdev->ping_timer, retu_wdt_set_ping_timer, 1);
|
|
|
-+
|
|
|
-+ /* passed as module parameter? */
|
|
|
-+ ret = retu_modify_counter(counter_param);
|
|
|
-+ if (ret == -EINVAL) {
|
|
|
-+ ret = retu_modify_counter(RETU_WDT_DEFAULT_TIMER);
|
|
|
-+ dev_dbg(&pdev->dev, "Initializing to default value\n");
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ /* Kick the watchdog for kernel booting to finish */
|
|
|
-+ retu_modify_counter(RETU_WDT_MAX_TIMER);
|
|
|
-+
|
|
|
-+ ret = retu_wdt_ping();
|
|
|
-+ if (ret < 0) {
|
|
|
-+ dev_err(&pdev->dev, "Failed to ping\n");
|
|
|
-+ goto free4;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+
|
|
|
-+free4:
|
|
|
-+ misc_deregister(&wdev->retu_wdt_miscdev);
|
|
|
-+
|
|
|
-+free3:
|
|
|
-+ device_remove_file(&pdev->dev, &dev_attr_counter);
|
|
|
-+
|
|
|
-+free2:
|
|
|
-+ device_remove_file(&pdev->dev, &dev_attr_period);
|
|
|
-+
|
|
|
-+free1:
|
|
|
-+ kfree(wdev);
|
|
|
-+
|
|
|
-+ return ret;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int __devexit retu_wdt_remove(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ struct retu_wdt_dev *wdev;
|
|
|
-+
|
|
|
-+ wdev = platform_get_drvdata(pdev);
|
|
|
-+ misc_deregister(&wdev->retu_wdt_miscdev);
|
|
|
-+ device_remove_file(&pdev->dev, &dev_attr_period);
|
|
|
-+ device_remove_file(&pdev->dev, &dev_attr_counter);
|
|
|
-+ kfree(wdev);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static struct platform_driver retu_wdt_driver = {
|
|
|
-+ .remove = __exit_p(retu_wdt_remove),
|
|
|
-+ .driver = {
|
|
|
-+ .name = "retu-wdt",
|
|
|
-+ },
|
|
|
-+};
|
|
|
-+
|
|
|
-+static int __init retu_wdt_init(void)
|
|
|
-+{
|
|
|
-+ return platform_driver_probe(&retu_wdt_driver, retu_wdt_probe);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void __exit retu_wdt_exit(void)
|
|
|
-+{
|
|
|
-+ platform_driver_unregister(&retu_wdt_driver);
|
|
|
-+}
|
|
|
-+
|
|
|
-+module_init(retu_wdt_init);
|
|
|
-+module_exit(retu_wdt_exit);
|
|
|
-+module_param(counter_param, int, 0);
|
|
|
-+
|
|
|
-+MODULE_DESCRIPTION("Retu WatchDog");
|
|
|
-+MODULE_AUTHOR("Amit Kucheria");
|
|
|
-+MODULE_LICENSE("GPL");
|
|
|
-+
|
|
|
---- /dev/null
|
|
|
-+++ b/drivers/cbus/tahvo.c
|
|
|
-@@ -0,0 +1,391 @@
|
|
|
-+/**
|
|
|
-+ * drivers/cbus/tahvo.c
|
|
|
-+ *
|
|
|
-+ * Support functions for Tahvo ASIC
|
|
|
-+ *
|
|
|
-+ * Copyright (C) 2004, 2005 Nokia Corporation
|
|
|
-+ *
|
|
|
-+ * Written by Juha Yrjölä <[email protected]>,
|
|
|
-+ * David Weinehall <[email protected]>, and
|
|
|
-+ * Mikko Ylinen <[email protected]>
|
|
|
-+ *
|
|
|
-+ * This file is subject to the terms and conditions of the GNU General
|
|
|
-+ * Public License. See the file "COPYING" in the main directory of this
|
|
|
-+ * archive for more details.
|
|
|
-+ *
|
|
|
-+ * This program is distributed in the hope that it will be useful,
|
|
|
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
-+ * GNU General Public License for more details.
|
|
|
-+ *
|
|
|
-+ * You should have received a copy of the GNU General Public License
|
|
|
-+ * along with this program; if not, write to the Free Software
|
|
|
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
-+ */
|
|
|
-+
|
|
|
-+#include <linux/module.h>
|
|
|
-+#include <linux/init.h>
|
|
|
-+
|
|
|
-+#include <linux/kernel.h>
|
|
|
-+#include <linux/errno.h>
|
|
|
-+#include <linux/device.h>
|
|
|
-+#include <linux/miscdevice.h>
|
|
|
-+#include <linux/poll.h>
|
|
|
-+#include <linux/fs.h>
|
|
|
-+#include <linux/irq.h>
|
|
|
-+#include <linux/interrupt.h>
|
|
|
-+#include <linux/platform_device.h>
|
|
|
-+#include <linux/gpio.h>
|
|
|
-+
|
|
|
-+#include <asm/uaccess.h>
|
|
|
-+#include <asm/mach-types.h>
|
|
|
-+
|
|
|
-+#include <plat/mux.h>
|
|
|
-+#include <plat/board.h>
|
|
|
-+
|
|
|
-+#include "cbus.h"
|
|
|
-+#include "tahvo.h"
|
|
|
-+
|
|
|
-+#define TAHVO_ID 0x02
|
|
|
-+#define PFX "tahvo: "
|
|
|
-+
|
|
|
-+static int tahvo_initialized;
|
|
|
-+static int tahvo_is_betty;
|
|
|
-+
|
|
|
-+static struct tasklet_struct tahvo_tasklet;
|
|
|
-+spinlock_t tahvo_lock = SPIN_LOCK_UNLOCKED;
|
|
|
-+
|
|
|
-+struct tahvo_irq_handler_desc {
|
|
|
-+ int (*func)(unsigned long);
|
|
|
-+ unsigned long arg;
|
|
|
-+ char name[8];
|
|
|
-+};
|
|
|
-+
|
|
|
-+static struct tahvo_irq_handler_desc tahvo_irq_handlers[MAX_TAHVO_IRQ_HANDLERS];
|
|
|
-+
|
|
|
-+int tahvo_get_status(void)
|
|
|
-+{
|
|
|
-+ return tahvo_initialized;
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL(tahvo_get_status);
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * tahvo_read_reg - Read a value from a register in Tahvo
|
|
|
-+ * @reg: the register to read from
|
|
|
-+ *
|
|
|
-+ * This function returns the contents of the specified register
|
|
|
-+ */
|
|
|
-+int tahvo_read_reg(unsigned reg)
|
|
|
-+{
|
|
|
-+ BUG_ON(!tahvo_initialized);
|
|
|
-+ return cbus_read_reg(TAHVO_ID, reg);
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL(tahvo_read_reg);
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * tahvo_write_reg - Write a value to a register in Tahvo
|
|
|
-+ * @reg: the register to write to
|
|
|
-+ * @reg: the value to write to the register
|
|
|
-+ *
|
|
|
-+ * This function writes a value to the specified register
|
|
|
-+ */
|
|
|
-+void tahvo_write_reg(unsigned reg, u16 val)
|
|
|
-+{
|
|
|
-+ BUG_ON(!tahvo_initialized);
|
|
|
-+ cbus_write_reg(TAHVO_ID, reg, val);
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL(tahvo_write_reg);
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * tahvo_set_clear_reg_bits - set and clear register bits atomically
|
|
|
-+ * @reg: the register to write to
|
|
|
-+ * @bits: the bits to set
|
|
|
-+ *
|
|
|
-+ * This function sets and clears the specified Tahvo register bits atomically
|
|
|
-+ */
|
|
|
-+void tahvo_set_clear_reg_bits(unsigned reg, u16 set, u16 clear)
|
|
|
-+{
|
|
|
-+ unsigned long flags;
|
|
|
-+ u16 w;
|
|
|
-+
|
|
|
-+ spin_lock_irqsave(&tahvo_lock, flags);
|
|
|
-+ w = tahvo_read_reg(reg);
|
|
|
-+ w &= ~clear;
|
|
|
-+ w |= set;
|
|
|
-+ tahvo_write_reg(reg, w);
|
|
|
-+ spin_unlock_irqrestore(&tahvo_lock, flags);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Disable given TAHVO interrupt
|
|
|
-+ */
|
|
|
-+void tahvo_disable_irq(int id)
|
|
|
-+{
|
|
|
-+ unsigned long flags;
|
|
|
-+ u16 mask;
|
|
|
-+
|
|
|
-+ spin_lock_irqsave(&tahvo_lock, flags);
|
|
|
-+ mask = tahvo_read_reg(TAHVO_REG_IMR);
|
|
|
-+ mask |= 1 << id;
|
|
|
-+ tahvo_write_reg(TAHVO_REG_IMR, mask);
|
|
|
-+ spin_unlock_irqrestore(&tahvo_lock, flags);
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL(tahvo_disable_irq);
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Enable given TAHVO interrupt
|
|
|
-+ */
|
|
|
-+void tahvo_enable_irq(int id)
|
|
|
-+{
|
|
|
-+ unsigned long flags;
|
|
|
-+ u16 mask;
|
|
|
-+
|
|
|
-+ spin_lock_irqsave(&tahvo_lock, flags);
|
|
|
-+ mask = tahvo_read_reg(TAHVO_REG_IMR);
|
|
|
-+ mask &= ~(1 << id);
|
|
|
-+ tahvo_write_reg(TAHVO_REG_IMR, mask);
|
|
|
-+ spin_unlock_irqrestore(&tahvo_lock, flags);
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL(tahvo_enable_irq);
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Acknowledge given TAHVO interrupt
|
|
|
-+ */
|
|
|
-+void tahvo_ack_irq(int id)
|
|
|
-+{
|
|
|
-+ tahvo_write_reg(TAHVO_REG_IDR, 1 << id);
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL(tahvo_ack_irq);
|
|
|
-+
|
|
|
-+static int tahvo_7bit_backlight;
|
|
|
-+
|
|
|
-+int tahvo_get_backlight_level(void)
|
|
|
-+{
|
|
|
-+ int mask;
|
|
|
-+
|
|
|
-+ if (tahvo_7bit_backlight)
|
|
|
-+ mask = 0x7f;
|
|
|
-+ else
|
|
|
-+ mask = 0x0f;
|
|
|
-+ return tahvo_read_reg(TAHVO_REG_LEDPWMR) & mask;
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL(tahvo_get_backlight_level);
|
|
|
-+
|
|
|
-+int tahvo_get_max_backlight_level(void)
|
|
|
-+{
|
|
|
-+ if (tahvo_7bit_backlight)
|
|
|
-+ return 0x7f;
|
|
|
-+ else
|
|
|
-+ return 0x0f;
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL(tahvo_get_max_backlight_level);
|
|
|
-+
|
|
|
-+void tahvo_set_backlight_level(int level)
|
|
|
-+{
|
|
|
-+ int max_level;
|
|
|
-+
|
|
|
-+ max_level = tahvo_get_max_backlight_level();
|
|
|
-+ if (level > max_level)
|
|
|
-+ level = max_level;
|
|
|
-+ tahvo_write_reg(TAHVO_REG_LEDPWMR, level);
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL(tahvo_set_backlight_level);
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * TAHVO interrupt handler. Only schedules the tasklet.
|
|
|
-+ */
|
|
|
-+static irqreturn_t tahvo_irq_handler(int irq, void *dev_id)
|
|
|
-+{
|
|
|
-+ tasklet_schedule(&tahvo_tasklet);
|
|
|
-+ return IRQ_HANDLED;
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Tasklet handler
|
|
|
-+ */
|
|
|
-+static void tahvo_tasklet_handler(unsigned long data)
|
|
|
-+{
|
|
|
-+ struct tahvo_irq_handler_desc *hnd;
|
|
|
-+ u16 id;
|
|
|
-+ u16 im;
|
|
|
-+ int i;
|
|
|
-+
|
|
|
-+ for (;;) {
|
|
|
-+ id = tahvo_read_reg(TAHVO_REG_IDR);
|
|
|
-+ im = ~tahvo_read_reg(TAHVO_REG_IMR);
|
|
|
-+ id &= im;
|
|
|
-+
|
|
|
-+ if (!id)
|
|
|
-+ break;
|
|
|
-+
|
|
|
-+ for (i = 0; id != 0; i++, id >>= 1) {
|
|
|
-+ if (!(id & 1))
|
|
|
-+ continue;
|
|
|
-+ hnd = &tahvo_irq_handlers[i];
|
|
|
-+ if (hnd->func == NULL) {
|
|
|
-+ /* Spurious tahvo interrupt - just ack it */
|
|
|
-+ printk(KERN_INFO "Spurious Tahvo interrupt "
|
|
|
-+ "(id %d)\n", i);
|
|
|
-+ tahvo_disable_irq(i);
|
|
|
-+ tahvo_ack_irq(i);
|
|
|
-+ continue;
|
|
|
-+ }
|
|
|
-+ hnd->func(hnd->arg);
|
|
|
-+ /*
|
|
|
-+ * Don't acknowledge the interrupt here
|
|
|
-+ * It must be done explicitly
|
|
|
-+ */
|
|
|
-+ }
|
|
|
-+ }
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Register the handler for a given TAHVO interrupt source.
|
|
|
-+ */
|
|
|
-+int tahvo_request_irq(int id, void *irq_handler, unsigned long arg, char *name)
|
|
|
-+{
|
|
|
-+ struct tahvo_irq_handler_desc *hnd;
|
|
|
-+
|
|
|
-+ if (irq_handler == NULL || id >= MAX_TAHVO_IRQ_HANDLERS ||
|
|
|
-+ name == NULL) {
|
|
|
-+ printk(KERN_ERR PFX "Invalid arguments to %s\n",
|
|
|
-+ __FUNCTION__);
|
|
|
-+ return -EINVAL;
|
|
|
-+ }
|
|
|
-+ hnd = &tahvo_irq_handlers[id];
|
|
|
-+ if (hnd->func != NULL) {
|
|
|
-+ printk(KERN_ERR PFX "IRQ %d already reserved\n", id);
|
|
|
-+ return -EBUSY;
|
|
|
-+ }
|
|
|
-+ printk(KERN_INFO PFX "Registering interrupt %d for device %s\n",
|
|
|
-+ id, name);
|
|
|
-+ hnd->func = irq_handler;
|
|
|
-+ hnd->arg = arg;
|
|
|
-+ strlcpy(hnd->name, name, sizeof(hnd->name));
|
|
|
-+
|
|
|
-+ tahvo_ack_irq(id);
|
|
|
-+ tahvo_enable_irq(id);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL(tahvo_request_irq);
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Unregister the handler for a given TAHVO interrupt source.
|
|
|
-+ */
|
|
|
-+void tahvo_free_irq(int id)
|
|
|
-+{
|
|
|
-+ struct tahvo_irq_handler_desc *hnd;
|
|
|
-+
|
|
|
-+ if (id >= MAX_TAHVO_IRQ_HANDLERS) {
|
|
|
-+ printk(KERN_ERR PFX "Invalid argument to %s\n",
|
|
|
-+ __FUNCTION__);
|
|
|
-+ return;
|
|
|
-+ }
|
|
|
-+ hnd = &tahvo_irq_handlers[id];
|
|
|
-+ if (hnd->func == NULL) {
|
|
|
-+ printk(KERN_ERR PFX "IRQ %d already freed\n", id);
|
|
|
-+ return;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ tahvo_disable_irq(id);
|
|
|
-+ hnd->func = NULL;
|
|
|
-+}
|
|
|
-+EXPORT_SYMBOL(tahvo_free_irq);
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * tahvo_probe - Probe for Tahvo ASIC
|
|
|
-+ * @dev: the Tahvo device
|
|
|
-+ *
|
|
|
-+ * Probe for the Tahvo ASIC and allocate memory
|
|
|
-+ * for its device-struct if found
|
|
|
-+ */
|
|
|
-+static int __init tahvo_probe(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ int rev, id, ret;
|
|
|
-+ int irq;
|
|
|
-+
|
|
|
-+ /* Prepare tasklet */
|
|
|
-+ tasklet_init(&tahvo_tasklet, tahvo_tasklet_handler, 0);
|
|
|
-+
|
|
|
-+ tahvo_initialized = 1;
|
|
|
-+
|
|
|
-+ rev = tahvo_read_reg(TAHVO_REG_ASICR);
|
|
|
-+
|
|
|
-+ id = (rev >> 8) & 0xff;
|
|
|
-+ if (id == 0x03) {
|
|
|
-+ if ((rev & 0xff) >= 0x50)
|
|
|
-+ tahvo_7bit_backlight = 1;
|
|
|
-+ } else if (id == 0x0b) {
|
|
|
-+ tahvo_is_betty = 1;
|
|
|
-+ tahvo_7bit_backlight = 1;
|
|
|
-+ } else {
|
|
|
-+ dev_err(&pdev->dev, "Tahvo/Betty chip not found");
|
|
|
-+ return -ENODEV;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ dev_err(&pdev->dev, "%s v%d.%d found\n", tahvo_is_betty ? "Betty" : "Tahvo",
|
|
|
-+ (rev >> 4) & 0x0f, rev & 0x0f);
|
|
|
-+
|
|
|
-+ irq = platform_get_irq(pdev, 0);
|
|
|
-+
|
|
|
-+ /* Mask all TAHVO interrupts */
|
|
|
-+ tahvo_write_reg(TAHVO_REG_IMR, 0xffff);
|
|
|
-+
|
|
|
-+ ret = request_irq(irq, tahvo_irq_handler, IRQF_TRIGGER_RISING,
|
|
|
-+ "tahvo", 0);
|
|
|
-+ if (ret < 0) {
|
|
|
-+ dev_err(&pdev->dev, "Unable to register IRQ handler\n");
|
|
|
-+ return ret;
|
|
|
-+ }
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int __exit tahvo_remove(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ int irq;
|
|
|
-+
|
|
|
-+ irq = platform_get_irq(pdev, 0);
|
|
|
-+
|
|
|
-+ /* Mask all TAHVO interrupts */
|
|
|
-+ tahvo_write_reg(TAHVO_REG_IMR, 0xffff);
|
|
|
-+ free_irq(irq, 0);
|
|
|
-+ tasklet_kill(&tahvo_tasklet);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static struct platform_driver tahvo_driver = {
|
|
|
-+ .remove = __exit_p(tahvo_remove),
|
|
|
-+ .driver = {
|
|
|
-+ .name = "tahvo",
|
|
|
-+ },
|
|
|
-+};
|
|
|
-+
|
|
|
-+/**
|
|
|
-+ * tahvo_init - initialise Tahvo driver
|
|
|
-+ *
|
|
|
-+ * Initialise the Tahvo driver and return 0 if everything worked ok
|
|
|
-+ */
|
|
|
-+static int __init tahvo_init(void)
|
|
|
-+{
|
|
|
-+ return platform_driver_probe(&tahvo_driver, tahvo_probe);
|
|
|
-+}
|
|
|
-+
|
|
|
-+/*
|
|
|
-+ * Cleanup
|
|
|
-+ */
|
|
|
-+static void __exit tahvo_exit(void)
|
|
|
-+{
|
|
|
-+ platform_driver_unregister(&tahvo_driver);
|
|
|
-+}
|
|
|
-+
|
|
|
-+subsys_initcall(tahvo_init);
|
|
|
-+module_exit(tahvo_exit);
|
|
|
-+
|
|
|
-+MODULE_DESCRIPTION("Tahvo ASIC control");
|
|
|
-+MODULE_LICENSE("GPL");
|
|
|
-+MODULE_AUTHOR("Juha Yrjölä");
|
|
|
-+MODULE_AUTHOR("David Weinehall");
|
|
|
-+MODULE_AUTHOR("Mikko Ylinen");
|
|
|
-+
|
|
|
---- /dev/null
|
|
|
-+++ b/drivers/cbus/tahvo.h
|
|
|
-@@ -0,0 +1,57 @@
|
|
|
-+/*
|
|
|
-+ * drivers/cbus/tahvo.h
|
|
|
-+ *
|
|
|
-+ * Copyright (C) 2004, 2005 Nokia Corporation
|
|
|
-+ *
|
|
|
-+ * Written by Juha Yrjölä <[email protected]> and
|
|
|
-+ * David Weinehall <[email protected]>
|
|
|
-+ *
|
|
|
-+ * This file is subject to the terms and conditions of the GNU General
|
|
|
-+ * Public License. See the file "COPYING" in the main directory of this
|
|
|
-+ * archive for more details.
|
|
|
-+ *
|
|
|
-+ * This program is distributed in the hope that it will be useful,
|
|
|
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
-+ * GNU General Public License for more details.
|
|
|
-+
|
|
|
-+ * You should have received a copy of the GNU General Public License
|
|
|
-+ * along with this program; if not, write to the Free Software
|
|
|
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
-+ */
|
|
|
-+
|
|
|
-+#ifndef __DRIVERS_CBUS_TAHVO_H
|
|
|
-+#define __DRIVERS_CBUS_TAHVO_H
|
|
|
-+
|
|
|
-+#include <linux/types.h>
|
|
|
-+
|
|
|
-+/* Registers */
|
|
|
-+#define TAHVO_REG_ASICR 0x00 /* ASIC ID & revision */
|
|
|
-+#define TAHVO_REG_IDR 0x01 /* Interrupt ID */
|
|
|
-+#define TAHVO_REG_IDSR 0x02 /* Interrupt status */
|
|
|
-+#define TAHVO_REG_IMR 0x03 /* Interrupt mask */
|
|
|
-+#define TAHVO_REG_LEDPWMR 0x05 /* LED PWM */
|
|
|
-+#define TAHVO_REG_USBR 0x06 /* USB control */
|
|
|
-+#define TAHVO_REG_MAX 0x0d
|
|
|
-+
|
|
|
-+/* Interrupt sources */
|
|
|
-+#define TAHVO_INT_VBUSON 0
|
|
|
-+
|
|
|
-+#define MAX_TAHVO_IRQ_HANDLERS 8
|
|
|
-+
|
|
|
-+int tahvo_get_status(void);
|
|
|
-+int tahvo_read_reg(unsigned reg);
|
|
|
-+void tahvo_write_reg(unsigned reg, u16 val);
|
|
|
-+void tahvo_set_clear_reg_bits(unsigned reg, u16 set, u16 clear);
|
|
|
-+int tahvo_request_irq(int id, void *irq_handler, unsigned long arg, char *name);
|
|
|
-+void tahvo_free_irq(int id);
|
|
|
-+void tahvo_enable_irq(int id);
|
|
|
-+void tahvo_disable_irq(int id);
|
|
|
-+void tahvo_ack_irq(int id);
|
|
|
-+int tahvo_get_backlight_level(void);
|
|
|
-+int tahvo_get_max_backlight_level(void);
|
|
|
-+void tahvo_set_backlight_level(int level);
|
|
|
-+
|
|
|
-+extern spinlock_t tahvo_lock;
|
|
|
-+
|
|
|
-+#endif /* __DRIVERS_CBUS_TAHVO_H */
|
|
|
---- /dev/null
|
|
|
-+++ b/drivers/cbus/tahvo-usb.c
|
|
|
-@@ -0,0 +1,773 @@
|
|
|
-+/**
|
|
|
-+ * drivers/cbus/tahvo-usb.c
|
|
|
-+ *
|
|
|
-+ * Tahvo USB transeiver
|
|
|
-+ *
|
|
|
-+ * Copyright (C) 2005-2006 Nokia Corporation
|
|
|
-+ *
|
|
|
-+ * Parts copied from drivers/i2c/chips/isp1301_omap.c
|
|
|
-+ * Copyright (C) 2004 Texas Instruments
|
|
|
-+ * Copyright (C) 2004 David Brownell
|
|
|
-+ *
|
|
|
-+ * Written by Juha Yrjölä <[email protected]>,
|
|
|
-+ * Tony Lindgren <[email protected]>, and
|
|
|
-+ * Timo Teräs <[email protected]>
|
|
|
-+ *
|
|
|
-+ * This file is subject to the terms and conditions of the GNU General
|
|
|
-+ * Public License. See the file "COPYING" in the main directory of this
|
|
|
-+ * archive for more details.
|
|
|
-+ *
|
|
|
-+ * This program is distributed in the hope that it will be useful,
|
|
|
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
-+ * GNU General Public License for more details.
|
|
|
-+ *
|
|
|
-+ * You should have received a copy of the GNU General Public License
|
|
|
-+ * along with this program; if not, write to the Free Software
|
|
|
-+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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-+ */
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-+
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-+#include <linux/kernel.h>
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-+#include <linux/module.h>
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-+#include <linux/init.h>
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-+#include <linux/slab.h>
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-+#include <linux/io.h>
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-+#include <linux/interrupt.h>
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-+#include <linux/platform_device.h>
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-+#include <linux/usb/ch9.h>
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-+#include <linux/usb/gadget.h>
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-+#include <linux/usb.h>
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-+#include <linux/usb/otg.h>
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-+#include <linux/i2c.h>
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-+#include <linux/workqueue.h>
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-+#include <linux/kobject.h>
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-+#include <linux/clk.h>
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-+#include <linux/mutex.h>
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-+
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-+#include <asm/irq.h>
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-+#include <plat/usb.h>
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-+
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-+#include "cbus.h"
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-+#include "tahvo.h"
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-+
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-+#define DRIVER_NAME "tahvo-usb"
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-+
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-+#define USBR_SLAVE_CONTROL (1 << 8)
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-+#define USBR_VPPVIO_SW (1 << 7)
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-+#define USBR_SPEED (1 << 6)
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-+#define USBR_REGOUT (1 << 5)
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-+#define USBR_MASTER_SW2 (1 << 4)
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-+#define USBR_MASTER_SW1 (1 << 3)
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-+#define USBR_SLAVE_SW (1 << 2)
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-+#define USBR_NSUSPEND (1 << 1)
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|
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-+#define USBR_SEMODE (1 << 0)
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-+
|
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-+/* bits in OTG_CTRL */
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|
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-+
|
|
|
-+/* Bits that are controlled by OMAP OTG and are read-only */
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|
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-+#define OTG_CTRL_OMAP_MASK (OTG_PULLDOWN|OTG_PULLUP|OTG_DRV_VBUS|\
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-+ OTG_PD_VBUS|OTG_PU_VBUS|OTG_PU_ID)
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|
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-+/* Bits that are controlled by transceiver */
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-+#define OTG_CTRL_XCVR_MASK (OTG_ASESSVLD|OTG_BSESSEND|\
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-+ OTG_BSESSVLD|OTG_VBUSVLD|OTG_ID)
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|
|
-+/* Bits that are controlled by system */
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|
|
-+#define OTG_CTRL_SYS_MASK (OTG_A_BUSREQ|OTG_A_SETB_HNPEN|OTG_B_BUSREQ|\
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-+ OTG_B_HNPEN|OTG_BUSDROP)
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-+
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-+#if defined(CONFIG_USB_OHCI_HCD) && !defined(CONFIG_USB_OTG)
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-+#error tahvo-otg.c does not work with OCHI yet!
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|
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-+#endif
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-+
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-+#define TAHVO_MODE_HOST 0
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-+#define TAHVO_MODE_PERIPHERAL 1
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-+
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-+#ifdef CONFIG_USB_OTG
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-+#define TAHVO_MODE(tu) (tu)->tahvo_mode
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-+#elif defined(CONFIG_USB_GADGET_OMAP)
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-+#define TAHVO_MODE(tu) TAHVO_MODE_PERIPHERAL
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|
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-+#else
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-+#define TAHVO_MODE(tu) TAHVO_MODE_HOST
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|
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-+#endif
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-+
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-+struct tahvo_usb {
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-+ struct platform_device *pt_dev;
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-+ struct otg_transceiver otg;
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-+ int vbus_state;
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-+ struct work_struct irq_work;
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-+ struct mutex serialize;
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-+#ifdef CONFIG_USB_OTG
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-+ int tahvo_mode;
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|
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-+#endif
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|
|
-+};
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-+static struct platform_device tahvo_usb_device;
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-+
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-+/*
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-+ * ---------------------------------------------------------------------------
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-+ * OTG related functions
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-+ *
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-+ * These shoud be separated into omap-otg.c driver module, as they are used
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-+ * by various transceivers. These functions are needed in the UDC-only case
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-+ * as well. These functions are copied from GPL isp1301_omap.c
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-+ * ---------------------------------------------------------------------------
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-+ */
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-+static struct platform_device *tahvo_otg_dev;
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-+
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-+static irqreturn_t omap_otg_irq(int irq, void *arg)
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-+{
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-+ struct platform_device *otg_dev = arg;
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-+ struct tahvo_usb *tu = platform_get_drvdata(otg_dev);
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-+ u16 otg_irq;
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-+
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-+ otg_irq = omap_readw(OTG_IRQ_SRC);
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-+ if (otg_irq & OPRT_CHG) {
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-+ omap_writew(OPRT_CHG, OTG_IRQ_SRC);
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|
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-+ } else if (otg_irq & B_SRP_TMROUT) {
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-+ omap_writew(B_SRP_TMROUT, OTG_IRQ_SRC);
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|
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-+ } else if (otg_irq & B_HNP_FAIL) {
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-+ omap_writew(B_HNP_FAIL, OTG_IRQ_SRC);
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|
|
-+ } else if (otg_irq & A_SRP_DETECT) {
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-+ omap_writew(A_SRP_DETECT, OTG_IRQ_SRC);
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|
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-+ } else if (otg_irq & A_REQ_TMROUT) {
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|
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-+ omap_writew(A_REQ_TMROUT, OTG_IRQ_SRC);
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|
|
-+ } else if (otg_irq & A_VBUS_ERR) {
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-+ omap_writew(A_VBUS_ERR, OTG_IRQ_SRC);
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|
|
-+ } else if (otg_irq & DRIVER_SWITCH) {
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|
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-+#ifdef CONFIG_USB_OTG
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-+ if ((!(omap_readl(OTG_CTRL) & OTG_DRIVER_SEL)) &&
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-+ tu->otg.host && tu->otg.state == OTG_STATE_A_HOST) {
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|
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-+ /* role is host */
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-+ usb_bus_start_enum(tu->otg.host,
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-+ tu->otg.host->otg_port);
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|
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-+ }
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-+#endif
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-+ omap_writew(DRIVER_SWITCH, OTG_IRQ_SRC);
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|
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-+ } else
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-+ return IRQ_NONE;
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-+
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-+ return IRQ_HANDLED;
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-+
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-+}
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-+
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-+static int tahvo_otg_init(void)
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-+{
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-+ u32 l;
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-+
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|
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-+#ifdef CONFIG_USB_OTG
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|
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-+ if (!tahvo_otg_dev) {
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-+ printk("tahvo-usb: no tahvo_otg_dev\n");
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-+ return -ENODEV;
|
|
|
-+ }
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|
|
-+#endif
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-+
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|
|
-+ l = omap_readl(OTG_SYSCON_1);
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-+ l &= ~OTG_IDLE_EN;
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-+ omap_writel(l, OTG_SYSCON_1);
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-+ udelay(100);
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-+
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|
|
-+ /* some of these values are board-specific... */
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|
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-+ l = omap_readl(OTG_SYSCON_2);
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|
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-+ l |= OTG_EN
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|
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-+ /* for B-device: */
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-+ | SRP_GPDATA /* 9msec Bdev D+ pulse */
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-+ | SRP_GPDVBUS /* discharge after VBUS pulse */
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-+ // | (3 << 24) /* 2msec VBUS pulse */
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-+ /* for A-device: */
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-+ | (0 << 20) /* 200ms nominal A_WAIT_VRISE timer */
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-+ | SRP_DPW /* detect 167+ns SRP pulses */
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-+ | SRP_DATA | SRP_VBUS; /* accept both kinds of SRP pulse */
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-+ omap_writel(l, OTG_SYSCON_2);
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-+
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-+ omap_writew(DRIVER_SWITCH | OPRT_CHG
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-+ | B_SRP_TMROUT | B_HNP_FAIL
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-+ | A_VBUS_ERR | A_SRP_DETECT | A_REQ_TMROUT,
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-+ OTG_IRQ_EN);
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-+ l = omap_readl(OTG_SYSCON_2);
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-+ l |= OTG_EN;
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-+ omap_writel(l, OTG_SYSCON_2);
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-+
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-+ return 0;
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-+}
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-+
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-+static int __init omap_otg_probe(struct platform_device *pdev)
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-+{
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-+ int ret;
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-+
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-+ tahvo_otg_dev = pdev;
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-+ ret = tahvo_otg_init();
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-+ if (ret != 0) {
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|
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-+ printk(KERN_ERR "tahvo-usb: tahvo_otg_init failed\n");
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-+ return ret;
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|
|
-+ }
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-+
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-+ return request_irq(tahvo_otg_dev->resource[1].start,
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-+ omap_otg_irq, IRQF_DISABLED, DRIVER_NAME,
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-+ &tahvo_usb_device);
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-+}
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-+
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-+static int __exit omap_otg_remove(struct platform_device *pdev)
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-+{
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-+ free_irq(tahvo_otg_dev->resource[1].start, &tahvo_usb_device);
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-+ tahvo_otg_dev = NULL;
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-+
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-+ return 0;
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-+}
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-+
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-+struct platform_driver omap_otg_driver = {
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-+ .driver = {
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-+ .name = "omap_otg",
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-+ },
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-+ .remove = __exit_p(omap_otg_remove),
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-+};
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-+
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-+/*
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-+ * ---------------------------------------------------------------------------
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-+ * Tahvo related functions
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-+ * These are Nokia proprietary code, except for the OTG register settings,
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-+ * which are copied from isp1301.c
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-+ * ---------------------------------------------------------------------------
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-+ */
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-+static ssize_t vbus_state_show(struct device *device,
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-+ struct device_attribute *attr, char *buf)
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-+{
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-+ struct tahvo_usb *tu = dev_get_drvdata(device);
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-+ return sprintf(buf, "%d\n", tu->vbus_state);
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-+}
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-+static DEVICE_ATTR(vbus_state, 0444, vbus_state_show, NULL);
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-+
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-+int vbus_active = 0;
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-+
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-+#if 0
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-+
|
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-+static int host_suspend(struct tahvo_usb *tu)
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|
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-+{
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-+ struct device *dev;
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-+
|
|
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-+ if (!tu->otg.host)
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-+ return -ENODEV;
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|
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-+
|
|
|
-+ /* Currently ASSUMES only the OTG port matters;
|
|
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-+ * other ports could be active...
|
|
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-+ */
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|
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-+ dev = tu->otg.host->controller;
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|
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-+ return dev->driver->suspend(dev, PMSG_SUSPEND);
|
|
|
-+}
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|
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-+
|
|
|
-+static int host_resume(struct tahvo_usb *tu)
|
|
|
-+{
|
|
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-+ struct device *dev;
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-+
|
|
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-+ if (!tu->otg.host)
|
|
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-+ return -ENODEV;
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|
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-+
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|
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-+ dev = tu->otg.host->controller;
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|
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-+ return dev->driver->resume(dev);
|
|
|
-+}
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-+
|
|
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-+#else
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|
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-+
|
|
|
-+static int host_suspend(struct tahvo_usb *tu)
|
|
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-+{
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|
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-+ return 0;
|
|
|
-+}
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|
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-+
|
|
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-+static int host_resume(struct tahvo_usb *tu)
|
|
|
-+{
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|
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-+ return 0;
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|
-+}
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|
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-+
|
|
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-+#endif
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|
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-+
|
|
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-+static void check_vbus_state(struct tahvo_usb *tu)
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|
|
-+{
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|
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-+ int reg, prev_state;
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|
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-+
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|
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-+ reg = tahvo_read_reg(TAHVO_REG_IDSR);
|
|
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-+ if (reg & 0x01) {
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|
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-+ u32 l;
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|
|
-+
|
|
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-+ vbus_active = 1;
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|
|
-+ switch (tu->otg.state) {
|
|
|
-+ case OTG_STATE_B_IDLE:
|
|
|
-+ /* Enable the gadget driver */
|
|
|
-+ if (tu->otg.gadget)
|
|
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-+ usb_gadget_vbus_connect(tu->otg.gadget);
|
|
|
-+ /* Set B-session valid and not B-sessio ended to indicate
|
|
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-+ * Vbus to be ok. */
|
|
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-+ l = omap_readl(OTG_CTRL);
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|
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-+ l &= ~OTG_BSESSEND;
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|
|
-+ l |= OTG_BSESSVLD;
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|
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-+ omap_writel(l, OTG_CTRL);
|
|
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-+
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|
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-+ tu->otg.state = OTG_STATE_B_PERIPHERAL;
|
|
|
-+ break;
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|
|
-+ case OTG_STATE_A_IDLE:
|
|
|
-+ /* Session is now valid assuming the USB hub is driving Vbus */
|
|
|
-+ tu->otg.state = OTG_STATE_A_HOST;
|
|
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-+ host_resume(tu);
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|
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-+ break;
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-+ default:
|
|
|
-+ break;
|
|
|
-+ }
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|
|
-+ printk("USB cable connected\n");
|
|
|
-+ } else {
|
|
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-+ switch (tu->otg.state) {
|
|
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-+ case OTG_STATE_B_PERIPHERAL:
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|
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-+ if (tu->otg.gadget)
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-+ usb_gadget_vbus_disconnect(tu->otg.gadget);
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|
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-+ tu->otg.state = OTG_STATE_B_IDLE;
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|
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-+ break;
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|
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-+ case OTG_STATE_A_HOST:
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|
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-+ tu->otg.state = OTG_STATE_A_IDLE;
|
|
|
-+ break;
|
|
|
-+ default:
|
|
|
-+ break;
|
|
|
-+ }
|
|
|
-+ printk("USB cable disconnected\n");
|
|
|
-+ vbus_active = 0;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ prev_state = tu->vbus_state;
|
|
|
-+ tu->vbus_state = reg & 0x01;
|
|
|
-+ if (prev_state != tu->vbus_state)
|
|
|
-+ sysfs_notify(&tu->pt_dev->dev.kobj, NULL, "vbus_state");
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void tahvo_usb_become_host(struct tahvo_usb *tu)
|
|
|
-+{
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|
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-+ u32 l;
|
|
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-+
|
|
|
-+ /* Clear system and transceiver controlled bits
|
|
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-+ * also mark the A-session is always valid */
|
|
|
-+ tahvo_otg_init();
|
|
|
-+
|
|
|
-+ l = omap_readl(OTG_CTRL);
|
|
|
-+ l &= ~(OTG_CTRL_XCVR_MASK | OTG_CTRL_SYS_MASK);
|
|
|
-+ l |= OTG_ASESSVLD;
|
|
|
-+ omap_writel(l, OTG_CTRL);
|
|
|
-+
|
|
|
-+ /* Power up the transceiver in USB host mode */
|
|
|
-+ tahvo_write_reg(TAHVO_REG_USBR, USBR_REGOUT | USBR_NSUSPEND |
|
|
|
-+ USBR_MASTER_SW2 | USBR_MASTER_SW1);
|
|
|
-+ tu->otg.state = OTG_STATE_A_IDLE;
|
|
|
-+
|
|
|
-+ check_vbus_state(tu);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void tahvo_usb_stop_host(struct tahvo_usb *tu)
|
|
|
-+{
|
|
|
-+ host_suspend(tu);
|
|
|
-+ tu->otg.state = OTG_STATE_A_IDLE;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void tahvo_usb_become_peripheral(struct tahvo_usb *tu)
|
|
|
-+{
|
|
|
-+ u32 l;
|
|
|
-+
|
|
|
-+ /* Clear system and transceiver controlled bits
|
|
|
-+ * and enable ID to mark peripheral mode and
|
|
|
-+ * BSESSEND to mark no Vbus */
|
|
|
-+ tahvo_otg_init();
|
|
|
-+ l = omap_readl(OTG_CTRL);
|
|
|
-+ l &= ~(OTG_CTRL_XCVR_MASK | OTG_CTRL_SYS_MASK | OTG_BSESSVLD);
|
|
|
-+ l |= OTG_ID | OTG_BSESSEND;
|
|
|
-+ omap_writel(l, OTG_CTRL);
|
|
|
-+
|
|
|
-+ /* Power up transceiver and set it in USB perhiperal mode */
|
|
|
-+ tahvo_write_reg(TAHVO_REG_USBR, USBR_SLAVE_CONTROL | USBR_REGOUT | USBR_NSUSPEND | USBR_SLAVE_SW);
|
|
|
-+ tu->otg.state = OTG_STATE_B_IDLE;
|
|
|
-+
|
|
|
-+ check_vbus_state(tu);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void tahvo_usb_stop_peripheral(struct tahvo_usb *tu)
|
|
|
-+{
|
|
|
-+ u32 l;
|
|
|
-+
|
|
|
-+ l = omap_readl(OTG_CTRL);
|
|
|
-+ l &= ~OTG_BSESSVLD;
|
|
|
-+ l |= OTG_BSESSEND;
|
|
|
-+ omap_writel(l, OTG_CTRL);
|
|
|
-+
|
|
|
-+ if (tu->otg.gadget)
|
|
|
-+ usb_gadget_vbus_disconnect(tu->otg.gadget);
|
|
|
-+ tu->otg.state = OTG_STATE_B_IDLE;
|
|
|
-+
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void tahvo_usb_power_off(struct tahvo_usb *tu)
|
|
|
-+{
|
|
|
-+ u32 l;
|
|
|
-+ int id;
|
|
|
-+
|
|
|
-+ /* Disable gadget controller if any */
|
|
|
-+ if (tu->otg.gadget)
|
|
|
-+ usb_gadget_vbus_disconnect(tu->otg.gadget);
|
|
|
-+
|
|
|
-+ host_suspend(tu);
|
|
|
-+
|
|
|
-+ /* Disable OTG and interrupts */
|
|
|
-+ if (TAHVO_MODE(tu) == TAHVO_MODE_PERIPHERAL)
|
|
|
-+ id = OTG_ID;
|
|
|
-+ else
|
|
|
-+ id = 0;
|
|
|
-+ l = omap_readl(OTG_CTRL);
|
|
|
-+ l &= ~(OTG_CTRL_XCVR_MASK | OTG_CTRL_SYS_MASK | OTG_BSESSVLD);
|
|
|
-+ l |= id | OTG_BSESSEND;
|
|
|
-+ omap_writel(l, OTG_CTRL);
|
|
|
-+ omap_writew(0, OTG_IRQ_EN);
|
|
|
-+
|
|
|
-+ l = omap_readl(OTG_SYSCON_2);
|
|
|
-+ l &= ~OTG_EN;
|
|
|
-+ omap_writel(l, OTG_SYSCON_2);
|
|
|
-+
|
|
|
-+ l = omap_readl(OTG_SYSCON_1);
|
|
|
-+ l |= OTG_IDLE_EN;
|
|
|
-+ omap_writel(l, OTG_SYSCON_1);
|
|
|
-+
|
|
|
-+ /* Power off transceiver */
|
|
|
-+ tahvo_write_reg(TAHVO_REG_USBR, 0);
|
|
|
-+ tu->otg.state = OTG_STATE_UNDEFINED;
|
|
|
-+}
|
|
|
-+
|
|
|
-+
|
|
|
-+static int tahvo_usb_set_power(struct otg_transceiver *dev, unsigned mA)
|
|
|
-+{
|
|
|
-+ struct tahvo_usb *tu = container_of(dev, struct tahvo_usb, otg);
|
|
|
-+
|
|
|
-+ dev_dbg(&tu->pt_dev->dev, "set_power %d mA\n", mA);
|
|
|
-+
|
|
|
-+ if (dev->state == OTG_STATE_B_PERIPHERAL) {
|
|
|
-+ /* REVISIT: Can Tahvo charge battery from VBUS? */
|
|
|
-+ }
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int tahvo_usb_set_suspend(struct otg_transceiver *dev, int suspend)
|
|
|
-+{
|
|
|
-+ struct tahvo_usb *tu = container_of(dev, struct tahvo_usb, otg);
|
|
|
-+ u16 w;
|
|
|
-+
|
|
|
-+ dev_dbg(&tu->pt_dev->dev, "set_suspend\n");
|
|
|
-+
|
|
|
-+ w = tahvo_read_reg(TAHVO_REG_USBR);
|
|
|
-+ if (suspend)
|
|
|
-+ w &= ~USBR_NSUSPEND;
|
|
|
-+ else
|
|
|
-+ w |= USBR_NSUSPEND;
|
|
|
-+ tahvo_write_reg(TAHVO_REG_USBR, w);
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int tahvo_usb_start_srp(struct otg_transceiver *dev)
|
|
|
-+{
|
|
|
-+ struct tahvo_usb *tu = container_of(dev, struct tahvo_usb, otg);
|
|
|
-+ u32 otg_ctrl;
|
|
|
-+
|
|
|
-+ dev_dbg(&tu->pt_dev->dev, "start_srp\n");
|
|
|
-+
|
|
|
-+ if (!dev || tu->otg.state != OTG_STATE_B_IDLE)
|
|
|
-+ return -ENODEV;
|
|
|
-+
|
|
|
-+ otg_ctrl = omap_readl(OTG_CTRL);
|
|
|
-+ if (!(otg_ctrl & OTG_BSESSEND))
|
|
|
-+ return -EINVAL;
|
|
|
-+
|
|
|
-+ otg_ctrl |= OTG_B_BUSREQ;
|
|
|
-+ otg_ctrl &= ~OTG_A_BUSREQ & OTG_CTRL_SYS_MASK;
|
|
|
-+ omap_writel(otg_ctrl, OTG_CTRL);
|
|
|
-+ tu->otg.state = OTG_STATE_B_SRP_INIT;
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int tahvo_usb_start_hnp(struct otg_transceiver *otg)
|
|
|
-+{
|
|
|
-+ struct tahvo_usb *tu = container_of(otg, struct tahvo_usb, otg);
|
|
|
-+
|
|
|
-+ dev_dbg(&tu->pt_dev->dev, "start_hnp\n");
|
|
|
-+#ifdef CONFIG_USB_OTG
|
|
|
-+ /* REVISIT: Add this for OTG */
|
|
|
-+#endif
|
|
|
-+ return -EINVAL;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int tahvo_usb_set_host(struct otg_transceiver *otg, struct usb_bus *host)
|
|
|
-+{
|
|
|
-+ struct tahvo_usb *tu = container_of(otg, struct tahvo_usb, otg);
|
|
|
-+ u32 l;
|
|
|
-+
|
|
|
-+ dev_dbg(&tu->pt_dev->dev, "set_host %p\n", host);
|
|
|
-+
|
|
|
-+ if (otg == NULL)
|
|
|
-+ return -ENODEV;
|
|
|
-+
|
|
|
-+#if defined(CONFIG_USB_OTG) || !defined(CONFIG_USB_GADGET_OMAP)
|
|
|
-+
|
|
|
-+ mutex_lock(&tu->serialize);
|
|
|
-+
|
|
|
-+ if (host == NULL) {
|
|
|
-+ if (TAHVO_MODE(tu) == TAHVO_MODE_HOST)
|
|
|
-+ tahvo_usb_power_off(tu);
|
|
|
-+ tu->otg.host = NULL;
|
|
|
-+ mutex_unlock(&tu->serialize);
|
|
|
-+ return 0;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ l = omap_readl(OTG_SYSCON_1);
|
|
|
-+ l &= ~(OTG_IDLE_EN | HST_IDLE_EN | DEV_IDLE_EN);
|
|
|
-+ omap_writel(l, OTG_SYSCON_1);
|
|
|
-+
|
|
|
-+ if (TAHVO_MODE(tu) == TAHVO_MODE_HOST) {
|
|
|
-+ tu->otg.host = NULL;
|
|
|
-+ tahvo_usb_become_host(tu);
|
|
|
-+ } else
|
|
|
-+ host_suspend(tu);
|
|
|
-+
|
|
|
-+ tu->otg.host = host;
|
|
|
-+
|
|
|
-+ mutex_unlock(&tu->serialize);
|
|
|
-+#else
|
|
|
-+ /* No host mode configured, so do not allow host controlled to be set */
|
|
|
-+ return -EINVAL;
|
|
|
-+#endif
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int tahvo_usb_set_peripheral(struct otg_transceiver *otg, struct usb_gadget *gadget)
|
|
|
-+{
|
|
|
-+ struct tahvo_usb *tu = container_of(otg, struct tahvo_usb, otg);
|
|
|
-+
|
|
|
-+ dev_dbg(&tu->pt_dev->dev, "set_peripheral %p\n", gadget);
|
|
|
-+
|
|
|
-+ if (!otg)
|
|
|
-+ return -ENODEV;
|
|
|
-+
|
|
|
-+#if defined(CONFIG_USB_OTG) || defined(CONFIG_USB_GADGET_OMAP)
|
|
|
-+
|
|
|
-+ mutex_lock(&tu->serialize);
|
|
|
-+
|
|
|
-+ if (!gadget) {
|
|
|
-+ if (TAHVO_MODE(tu) == TAHVO_MODE_PERIPHERAL)
|
|
|
-+ tahvo_usb_power_off(tu);
|
|
|
-+ tu->otg.gadget = NULL;
|
|
|
-+ mutex_unlock(&tu->serialize);
|
|
|
-+ return 0;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ tu->otg.gadget = gadget;
|
|
|
-+ if (TAHVO_MODE(tu) == TAHVO_MODE_PERIPHERAL)
|
|
|
-+ tahvo_usb_become_peripheral(tu);
|
|
|
-+
|
|
|
-+ mutex_unlock(&tu->serialize);
|
|
|
-+#else
|
|
|
-+ /* No gadget mode configured, so do not allow host controlled to be set */
|
|
|
-+ return -EINVAL;
|
|
|
-+#endif
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void tahvo_usb_irq_work(struct work_struct *work)
|
|
|
-+{
|
|
|
-+ struct tahvo_usb *tu = container_of(work, struct tahvo_usb, irq_work);
|
|
|
-+
|
|
|
-+ mutex_lock(&tu->serialize);
|
|
|
-+ check_vbus_state(tu);
|
|
|
-+ mutex_unlock(&tu->serialize);
|
|
|
-+}
|
|
|
-+
|
|
|
-+static void tahvo_usb_vbus_interrupt(unsigned long arg)
|
|
|
-+{
|
|
|
-+ struct tahvo_usb *tu = (struct tahvo_usb *) arg;
|
|
|
-+
|
|
|
-+ tahvo_ack_irq(TAHVO_INT_VBUSON);
|
|
|
-+ /* Seems we need this to acknowledge the interrupt */
|
|
|
-+ tahvo_read_reg(TAHVO_REG_IDSR);
|
|
|
-+ schedule_work(&tu->irq_work);
|
|
|
-+}
|
|
|
-+
|
|
|
-+#ifdef CONFIG_USB_OTG
|
|
|
-+static ssize_t otg_mode_show(struct device *device,
|
|
|
-+ struct device_attribute *attr, char *buf)
|
|
|
-+{
|
|
|
-+ struct tahvo_usb *tu = dev_get_drvdata(device);
|
|
|
-+ switch (tu->tahvo_mode) {
|
|
|
-+ case TAHVO_MODE_HOST:
|
|
|
-+ return sprintf(buf, "host\n");
|
|
|
-+ case TAHVO_MODE_PERIPHERAL:
|
|
|
-+ return sprintf(buf, "peripheral\n");
|
|
|
-+ }
|
|
|
-+ return sprintf(buf, "unknown\n");
|
|
|
-+}
|
|
|
-+
|
|
|
-+static ssize_t otg_mode_store(struct device *device,
|
|
|
-+ struct device_attribute *attr,
|
|
|
-+ const char *buf, size_t count)
|
|
|
-+{
|
|
|
-+ struct tahvo_usb *tu = dev_get_drvdata(device);
|
|
|
-+ int r;
|
|
|
-+
|
|
|
-+ r = strlen(buf);
|
|
|
-+ mutex_lock(&tu->serialize);
|
|
|
-+ if (strncmp(buf, "host", 4) == 0) {
|
|
|
-+ if (tu->tahvo_mode == TAHVO_MODE_PERIPHERAL)
|
|
|
-+ tahvo_usb_stop_peripheral(tu);
|
|
|
-+ tu->tahvo_mode = TAHVO_MODE_HOST;
|
|
|
-+ if (tu->otg.host) {
|
|
|
-+ printk(KERN_INFO "Selected HOST mode: host controller present.\n");
|
|
|
-+ tahvo_usb_become_host(tu);
|
|
|
-+ } else {
|
|
|
-+ printk(KERN_INFO "Selected HOST mode: no host controller, powering off.\n");
|
|
|
-+ tahvo_usb_power_off(tu);
|
|
|
-+ }
|
|
|
-+ } else if (strncmp(buf, "peripheral", 10) == 0) {
|
|
|
-+ if (tu->tahvo_mode == TAHVO_MODE_HOST)
|
|
|
-+ tahvo_usb_stop_host(tu);
|
|
|
-+ tu->tahvo_mode = TAHVO_MODE_PERIPHERAL;
|
|
|
-+ if (tu->otg.gadget) {
|
|
|
-+ printk(KERN_INFO "Selected PERIPHERAL mode: gadget driver present.\n");
|
|
|
-+ tahvo_usb_become_peripheral(tu);
|
|
|
-+ } else {
|
|
|
-+ printk(KERN_INFO "Selected PERIPHERAL mode: no gadget driver, powering off.\n");
|
|
|
-+ tahvo_usb_power_off(tu);
|
|
|
-+ }
|
|
|
-+ } else
|
|
|
-+ r = -EINVAL;
|
|
|
-+
|
|
|
-+ mutex_unlock(&tu->serialize);
|
|
|
-+ return r;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static DEVICE_ATTR(otg_mode, 0644, otg_mode_show, otg_mode_store);
|
|
|
-+#endif
|
|
|
-+
|
|
|
-+static int __init tahvo_usb_probe(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ struct tahvo_usb *tu;
|
|
|
-+ struct device *dev = &pdev->dev;
|
|
|
-+ int ret;
|
|
|
-+
|
|
|
-+ ret = tahvo_get_status();
|
|
|
-+ if (!ret)
|
|
|
-+ return -ENODEV;
|
|
|
-+
|
|
|
-+ dev_dbg(dev, "probe\n");
|
|
|
-+
|
|
|
-+ /* Create driver data */
|
|
|
-+ tu = kzalloc(sizeof(*tu), GFP_KERNEL);
|
|
|
-+ if (!tu)
|
|
|
-+ return -ENOMEM;
|
|
|
-+
|
|
|
-+ tu->pt_dev = container_of(dev, struct platform_device, dev);
|
|
|
-+#ifdef CONFIG_USB_OTG
|
|
|
-+ /* Default mode */
|
|
|
-+#ifdef CONFIG_CBUS_TAHVO_USB_HOST_BY_DEFAULT
|
|
|
-+ tu->tahvo_mode = TAHVO_MODE_HOST;
|
|
|
-+#else
|
|
|
-+ tu->tahvo_mode = TAHVO_MODE_PERIPHERAL;
|
|
|
-+#endif
|
|
|
-+#endif
|
|
|
-+
|
|
|
-+ INIT_WORK(&tu->irq_work, tahvo_usb_irq_work);
|
|
|
-+ mutex_init(&tu->serialize);
|
|
|
-+
|
|
|
-+ /* Set initial state, so that we generate kevents only on
|
|
|
-+ * state changes */
|
|
|
-+ tu->vbus_state = tahvo_read_reg(TAHVO_REG_IDSR) & 0x01;
|
|
|
-+
|
|
|
-+ /* We cannot enable interrupt until omap_udc is initialized */
|
|
|
-+ ret = tahvo_request_irq(TAHVO_INT_VBUSON, tahvo_usb_vbus_interrupt,
|
|
|
-+ (unsigned long) tu, "vbus_interrupt");
|
|
|
-+ if (ret != 0) {
|
|
|
-+ kfree(tu);
|
|
|
-+ printk(KERN_ERR "Could not register Tahvo interrupt for VBUS\n");
|
|
|
-+ return ret;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ /* Attributes */
|
|
|
-+ ret = device_create_file(dev, &dev_attr_vbus_state);
|
|
|
-+#ifdef CONFIG_USB_OTG
|
|
|
-+ ret |= device_create_file(dev, &dev_attr_otg_mode);
|
|
|
-+#endif
|
|
|
-+ if (ret)
|
|
|
-+ printk(KERN_ERR "attribute creation failed: %d\n", ret);
|
|
|
-+
|
|
|
-+ /* Create OTG interface */
|
|
|
-+ tahvo_usb_power_off(tu);
|
|
|
-+ tu->otg.state = OTG_STATE_UNDEFINED;
|
|
|
-+ tu->otg.label = DRIVER_NAME;
|
|
|
-+ tu->otg.set_host = tahvo_usb_set_host;
|
|
|
-+ tu->otg.set_peripheral = tahvo_usb_set_peripheral;
|
|
|
-+ tu->otg.set_power = tahvo_usb_set_power;
|
|
|
-+ tu->otg.set_suspend = tahvo_usb_set_suspend;
|
|
|
-+ tu->otg.start_srp = tahvo_usb_start_srp;
|
|
|
-+ tu->otg.start_hnp = tahvo_usb_start_hnp;
|
|
|
-+
|
|
|
-+ ret = otg_set_transceiver(&tu->otg);
|
|
|
-+ if (ret < 0) {
|
|
|
-+ printk(KERN_ERR "Cannot register USB transceiver\n");
|
|
|
-+ kfree(tu);
|
|
|
-+ tahvo_free_irq(TAHVO_INT_VBUSON);
|
|
|
-+ return ret;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ dev_set_drvdata(dev, tu);
|
|
|
-+
|
|
|
-+ /* Act upon current vbus state once at startup. A vbus state irq may or
|
|
|
-+ * may not be generated in addition to this. */
|
|
|
-+ schedule_work(&tu->irq_work);
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static int __exit tahvo_usb_remove(struct platform_device *pdev)
|
|
|
-+{
|
|
|
-+ dev_dbg(&pdev->dev, "remove\n");
|
|
|
-+
|
|
|
-+ tahvo_free_irq(TAHVO_INT_VBUSON);
|
|
|
-+ flush_scheduled_work();
|
|
|
-+ otg_set_transceiver(0);
|
|
|
-+ device_remove_file(&pdev->dev, &dev_attr_vbus_state);
|
|
|
-+#ifdef CONFIG_USB_OTG
|
|
|
-+ device_remove_file(&pdev->dev, &dev_attr_otg_mode);
|
|
|
-+#endif
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+static struct platform_driver tahvo_usb_driver = {
|
|
|
-+ .driver = {
|
|
|
-+ .name = "tahvo-usb",
|
|
|
-+ },
|
|
|
-+ .remove = __exit_p(tahvo_usb_remove),
|
|
|
-+};
|
|
|
-+
|
|
|
-+static int __init tahvo_usb_init(void)
|
|
|
-+{
|
|
|
-+ int ret = 0;
|
|
|
-+
|
|
|
-+ ret = platform_driver_probe(&tahvo_usb_driver, tahvo_usb_probe);
|
|
|
-+ if (ret)
|
|
|
-+ return ret;
|
|
|
-+
|
|
|
-+ ret = platform_driver_probe(&omap_otg_driver, omap_otg_probe);
|
|
|
-+ if (ret) {
|
|
|
-+ platform_driver_unregister(&tahvo_usb_driver);
|
|
|
-+ return ret;
|
|
|
-+ }
|
|
|
-+
|
|
|
-+ return 0;
|
|
|
-+}
|
|
|
-+
|
|
|
-+subsys_initcall(tahvo_usb_init);
|
|
|
-+
|
|
|
-+static void __exit tahvo_usb_exit(void)
|
|
|
-+{
|
|
|
-+ platform_driver_unregister(&omap_otg_driver);
|
|
|
-+ platform_driver_unregister(&tahvo_usb_driver);
|
|
|
-+}
|
|
|
-+module_exit(tahvo_usb_exit);
|
|
|
-+
|
|
|
-+MODULE_DESCRIPTION("Tahvo USB OTG Transceiver Driver");
|
|
|
-+MODULE_LICENSE("GPL");
|
|
|
-+MODULE_AUTHOR("Juha Yrjölä, Tony Lindgren, and Timo Teräs");
|
|
|
---- a/drivers/Makefile
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-+++ b/drivers/Makefile
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-@@ -74,7 +74,7 @@ obj-$(CONFIG_GAMEPORT) += input/gamepor
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- obj-$(CONFIG_INPUT) += input/
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- obj-$(CONFIG_I2O) += message/
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- obj-$(CONFIG_RTC_LIB) += rtc/
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--obj-y += i2c/ media/
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-+obj-y += i2c/ media/ cbus/
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- obj-$(CONFIG_PPS) += pps/
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- obj-$(CONFIG_W1) += w1/
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- obj-$(CONFIG_POWER_SUPPLY) += power/
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---- a/arch/arm/Kconfig
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-+++ b/arch/arm/Kconfig
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-@@ -1930,6 +1930,10 @@ source "net/Kconfig"
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-
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- source "drivers/Kconfig"
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-
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-+if ARCH_OMAP
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-+source "drivers/cbus/Kconfig"
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-+endif
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-+
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- source "fs/Kconfig"
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-
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- source "arch/arm/Kconfig.debug"
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Gabor Juhos