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@@ -1,278 +0,0 @@
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-/*
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- * Copyright (C) 2007 Openmoko, Inc.
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- * Author: Harald Welte <[email protected]>
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- *
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- * Smedia Glamo GPIO based SPI driver
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This driver currently only implements a minimum subset of the hardware
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- * features, esp. those features that are required to drive the jbt6k74
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- * LCM controller asic in the TD028TTEC1 LCM.
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- *
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-*/
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-
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-#define DEBUG
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-
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-#include <linux/kernel.h>
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-#include <linux/init.h>
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-#include <linux/delay.h>
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-#include <linux/device.h>
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-#include <linux/spinlock.h>
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-#include <linux/platform_device.h>
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-
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-#include <linux/spi/spi.h>
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-#include <linux/spi/spi_bitbang.h>
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-#include <linux/spi/glamo.h>
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-
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-#include <linux/glamofb.h>
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-
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-#include <mach/hardware.h>
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-
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-#include "glamo-core.h"
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-#include "glamo-regs.h"
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-
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-struct glamo_spigpio {
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- struct spi_bitbang bitbang;
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- struct spi_master *master;
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- struct glamo_spigpio_platform_data *info;
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-};
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-
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-static inline struct glamo_spigpio *to_sg(struct spi_device *spi)
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-{
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- return dev_get_drvdata(&spi->master->dev);
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-}
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-
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-static inline void setsck(struct spi_device *dev, int on)
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-{
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- struct glamo_spigpio *sg = to_sg(dev);
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- glamo_gpio_setpin(sg->info->core, sg->info->pin_clk, on ? 1 : 0);
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-}
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-
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-static inline void setmosi(struct spi_device *dev, int on)
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-{
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- struct glamo_spigpio *sg = to_sg(dev);
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- glamo_gpio_setpin(sg->info->core, sg->info->pin_mosi, on ? 1 : 0);
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-}
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-
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-static inline u32 getmiso(struct spi_device *dev)
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-{
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- struct glamo_spigpio *sg = to_sg(dev);
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- if (sg->info->pin_miso)
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- return glamo_gpio_getpin(sg->info->core, sg->info->pin_miso) ? 1 : 0;
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- else
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- return 0;
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-}
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-
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-#define spidelay(x) ndelay(x)
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-
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-#define EXPAND_BITBANG_TXRX
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-#include <linux/spi/spi_bitbang.h>
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-
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-static u32 glamo_spigpio_txrx_mode0(struct spi_device *spi,
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- unsigned nsecs, u32 word, u8 bits)
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-{
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- return bitbang_txrx_be_cpha0(spi, nsecs, 0, word, bits);
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-}
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-
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-static u32 glamo_spigpio_txrx_mode1(struct spi_device *spi,
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- unsigned nsecs, u32 word, u8 bits)
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-{
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- return bitbang_txrx_be_cpha1(spi, nsecs, 0, word, bits);
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-}
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-
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-static u32 glamo_spigpio_txrx_mode2(struct spi_device *spi,
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- unsigned nsecs, u32 word, u8 bits)
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-{
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- return bitbang_txrx_be_cpha0(spi, nsecs, 1, word, bits);
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-}
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-
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-static u32 glamo_spigpio_txrx_mode3(struct spi_device *spi,
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- unsigned nsecs, u32 word, u8 bits)
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-{
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- return bitbang_txrx_be_cpha1(spi, nsecs, 1, word, bits);
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-}
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-
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-
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-#if 0
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-static int glamo_spigpio_setupxfer(struct spi_device *spi,
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- struct spi_transfer *t)
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-{
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- struct glamo_spi *gs = to_sg(spi);
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- unsigned int bpw;
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-
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- bpw = t ? t->bits_per_word : spi->bits_per_word;
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-
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- if (bpw != 9 && bpw != 8) {
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- dev_err(&spi->dev, "invalid bits-per-word (%d)\n", bpw);
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- return -EINVAL;
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- }
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-
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- return 0;
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-}
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-#endif
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-
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-static void glamo_spigpio_chipsel(struct spi_device *spi, int value)
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-{
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- struct glamo_spigpio *gs = to_sg(spi);
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-#if 0
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- dev_dbg(&spi->dev, "chipsel %d: spi=%p, gs=%p, info=%p, handle=%p\n",
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- value, spi, gs, gs->info, gs->info->glamo);
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-#endif
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- glamo_gpio_setpin(gs->info->core, gs->info->pin_cs, value ? 0 : 1);
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-}
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-
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-
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-static int glamo_spigpio_probe(struct platform_device *pdev)
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-{
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- struct spi_master *master;
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- struct glamo_spigpio *sp;
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- int ret;
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-
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- master = spi_alloc_master(&pdev->dev, sizeof(struct glamo_spigpio));
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- if (master == NULL) {
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- dev_err(&pdev->dev, "failed to allocate spi master\n");
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- ret = -ENOMEM;
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- goto err;
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- }
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-
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- sp = spi_master_get_devdata(master);
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- platform_set_drvdata(pdev, sp);
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- sp->info = pdev->dev.platform_data;
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- if (!sp->info) {
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- dev_err(&pdev->dev, "can't operate without platform data\n");
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- ret = -EIO;
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- goto err_no_pdev;
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- }
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-
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- master->num_chipselect = 1;
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- master->bus_num = 2; /* FIXME: use dynamic number */
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-
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- sp->master = spi_master_get(master);
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-
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- sp->bitbang.master = sp->master;
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- sp->bitbang.chipselect = glamo_spigpio_chipsel;
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- sp->bitbang.txrx_word[SPI_MODE_0] = glamo_spigpio_txrx_mode0;
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- sp->bitbang.txrx_word[SPI_MODE_1] = glamo_spigpio_txrx_mode1;
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- sp->bitbang.txrx_word[SPI_MODE_2] = glamo_spigpio_txrx_mode2;
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- sp->bitbang.txrx_word[SPI_MODE_3] = glamo_spigpio_txrx_mode3;
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-
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- /* set state of spi pins */
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- glamo_gpio_setpin(sp->info->core, sp->info->pin_clk, 0);
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- glamo_gpio_setpin(sp->info->core, sp->info->pin_mosi, 0);
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- glamo_gpio_setpin(sp->info->core, sp->info->pin_cs, 1);
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-
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- glamo_gpio_cfgpin(sp->info->core, sp->info->pin_clk);
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- glamo_gpio_cfgpin(sp->info->core, sp->info->pin_mosi);
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- glamo_gpio_cfgpin(sp->info->core, sp->info->pin_cs);
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- if (sp->info->pin_miso)
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- glamo_gpio_cfgpin(sp->info->core, sp->info->pin_miso);
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-
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- /* bring the LCM panel out of reset if it isn't already */
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-
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- glamo_gpio_setpin(sp->info->core, GLAMO_GPIO4, 1);
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- glamo_gpio_cfgpin(sp->info->core, GLAMO_GPIO4_OUTPUT);
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- msleep(90);
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-
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-#if 0
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- sp->dev = &pdev->dev;
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-
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- sp->bitbang.setup_transfer = glamo_spi_setupxfer;
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- sp->bitbang.txrx_bufs = glamo_spi_txrx;
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- sp->bitbang.master->setup = glamo_spi_setup;
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-#endif
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-
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- dev_set_drvdata(&sp->master->dev, sp);
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-
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- ret = spi_bitbang_start(&sp->bitbang);
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- if (ret)
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- goto err_no_bitbang;
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-
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- return 0;
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-
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-err_no_bitbang:
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- platform_set_drvdata(pdev, NULL);
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-err_no_pdev:
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- spi_master_put(sp->bitbang.master);
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-err:
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- return ret;
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-
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-}
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-
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-static int glamo_spigpio_remove(struct platform_device *pdev)
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-{
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- struct glamo_spigpio *sp = platform_get_drvdata(pdev);
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-
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- spi_bitbang_stop(&sp->bitbang);
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- spi_master_put(sp->bitbang.master);
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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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-#ifdef CONFIG_PM
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-/*static int glamo_spigpio_suspend(struct device *dev)
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-{
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- return 0;
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-}*/
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-
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-static int glamo_spigpio_resume(struct device *dev)
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-{
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- struct glamo_spigpio *sp = dev_get_drvdata(dev);
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-
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- if (!sp)
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- return 0;
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-
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- /* set state of spi pins */
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- glamo_gpio_setpin(sp->info->core, sp->info->pin_clk, 0);
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- glamo_gpio_setpin(sp->info->core, sp->info->pin_mosi, 0);
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- glamo_gpio_setpin(sp->info->core, sp->info->pin_cs, 1);
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-
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- glamo_gpio_cfgpin(sp->info->core, sp->info->pin_clk);
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- glamo_gpio_cfgpin(sp->info->core, sp->info->pin_mosi);
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- glamo_gpio_cfgpin(sp->info->core, sp->info->pin_cs);
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- if (sp->info->pin_miso)
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- glamo_gpio_cfgpin(sp->info->core, sp->info->pin_miso);
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-
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- return 0;
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-}
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-
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-static struct dev_pm_ops glamo_spigpio_pm_ops = {
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-/* .suspend = glamo_spiogpio_suspend,*/
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- .resume_noirq = glamo_spigpio_resume,
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-};
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-
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-#define GLAMO_SPIGPIO_PM_OPS (&glamo_spigpio_pm_ops)
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-
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-#else
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-#define GLAMO_SPIGPIO_PM_OPS NULL
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-#endif
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-
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-static struct platform_driver glamo_spi_drv = {
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- .probe = glamo_spigpio_probe,
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- .remove = glamo_spigpio_remove,
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- .driver = {
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- .name = "glamo-spi-gpio",
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- .owner = THIS_MODULE,
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- .pm = GLAMO_SPIGPIO_PM_OPS,
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- },
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-};
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-
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-static int __init glamo_spi_init(void)
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-{
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- return platform_driver_register(&glamo_spi_drv);
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-}
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-
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-static void __exit glamo_spi_exit(void)
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-{
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- platform_driver_unregister(&glamo_spi_drv);
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-}
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-
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-module_init(glamo_spi_init);
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-module_exit(glamo_spi_exit);
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-
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-MODULE_DESCRIPTION("Smedia Glamo 336x/337x LCM serial command SPI Driver");
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-MODULE_AUTHOR("Harald Welte <[email protected]>")
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-MODULE_LICENSE("GPL");
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Lars-Peter Clausen