bcm53xx: respect ACTIVE_LOW when powering USB using GPIO

Signed-off-by: Rafał Miłecki <[email protected]>

SVN-Revision: 46088

target/linux/bcm53xx/patches-3.18/813-USB-bcma-fix-setting-VCC-GPIO-value.patch

@@ -1,4 +1,4 @@
-From a9e32f77ff74492d79fe2e24f0418136acd8a680 Mon Sep 17 00:00:00 2001
+From bdc3b01d94b22f8b5f9621a1c37336e78f4f1bce Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <[email protected]>
 Date: Sun, 21 Jun 2015 12:09:57 +0200
 Subject: [PATCH] USB: bcma: fix setting VCC GPIO value
@@ -6,26 +6,45 @@ MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
 Content-Transfer-Encoding: 8bit
 
-It wasn't working (on most of devices?) without setting GPIO direction.
+It wasn't working (on most of devices?) without setting GPIO direction
+and wasn't respecting ACTIVE_LOW flag.
 
 Signed-off-by: Rafał Miłecki <[email protected]>
 ---
- drivers/usb/host/bcma-hcd.c | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
+ drivers/usb/host/bcma-hcd.c | 13 +++++++++----
+ 1 file changed, 9 insertions(+), 4 deletions(-)
 
 diff --git a/drivers/usb/host/bcma-hcd.c b/drivers/usb/host/bcma-hcd.c
-index f7a66b9..b31e3cc 100644
+index 8853ef7..d18ffdc 100644
 --- a/drivers/usb/host/bcma-hcd.c
 +++ b/drivers/usb/host/bcma-hcd.c
-@@ -238,7 +238,7 @@ static void bcma_hci_platform_power_gpio(struct bcma_device *dev, bool val)
+@@ -230,17 +230,22 @@ static void bcma_hcd_init_chip_arm(struct bcma_device *dev)
+ 
+ static void bcma_hci_platform_power_gpio(struct bcma_device *dev, bool val)
+ {
++	enum of_gpio_flags of_flags;
+ 	int gpio;
+ 
+-	gpio = of_get_named_gpio(dev->dev.of_node, "vcc-gpio", 0);
++	gpio = of_get_named_gpio_flags(dev->dev.of_node, "vcc-gpio", 0, &of_flags);
+ 	if (!gpio_is_valid(gpio))
+ 		return;
  
  	if (val) {
- 		gpio_request(gpio, "bcma-hcd-gpio");
+-		gpio_request(gpio, "bcma-hcd-gpio");
 -		gpio_set_value(gpio, 1);
-+		gpio_direction_output(gpio, 1);
++		unsigned long flags = 0;
++		bool active_low = !!(of_flags & OF_GPIO_ACTIVE_LOW);
++
++		flags |= active_low ? GPIOF_ACTIVE_LOW : 0;
++		flags |= active_low ? GPIOF_INIT_LOW : GPIOF_INIT_HIGH;
++		gpio_request_one(gpio, flags, "bcma-hcd-gpio");
  	} else {
- 		gpio_set_value(gpio, 0);
+-		gpio_set_value(gpio, 0);
++		gpiod_set_value(gpio_to_desc(gpio), 0);
  		gpio_free(gpio);
+ 	}
+ }
 -- 
 1.8.4.5