diff options
Diffstat (limited to 'target/linux/bcm53xx/patches-4.3/186-USB-bcma-switch-to-GPIO-descriptor-for-power-control.patch')
| -rw-r--r-- | target/linux/bcm53xx/patches-4.3/186-USB-bcma-switch-to-GPIO-descriptor-for-power-control.patch | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/target/linux/bcm53xx/patches-4.3/186-USB-bcma-switch-to-GPIO-descriptor-for-power-control.patch b/target/linux/bcm53xx/patches-4.3/186-USB-bcma-switch-to-GPIO-descriptor-for-power-control.patch deleted file mode 100644 index f1995d1e6d..0000000000 --- a/target/linux/bcm53xx/patches-4.3/186-USB-bcma-switch-to-GPIO-descriptor-for-power-control.patch +++ /dev/null @@ -1,73 +0,0 @@ -From 0cb136f9882e4649ad6160bb7b48955ff728888c Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com> -Date: Sun, 1 Nov 2015 08:17:21 +0100 -Subject: [PATCH V2] USB: bcma: switch to GPIO descriptor for power control -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -So far we were using simple (legacy) GPIO functions & some poor logic to -control power. It got many drawbacks: we were ignoring OF flags -(GPIO_ACTIVE_LOW), we were not setting direction to output and we were -assuming gpio_request success all the time. -Fix it by switching to gpiod functions and adding appropriate checks. - -Signed-off-by: Rafał Miłecki <zajec5@gmail.com> ---- - drivers/usb/host/bcma-hcd.c | 21 ++++++++++----------- - 1 file changed, 10 insertions(+), 11 deletions(-) - ---- a/drivers/usb/host/bcma-hcd.c -+++ b/drivers/usb/host/bcma-hcd.c -@@ -21,6 +21,7 @@ - */ - #include <linux/bcma/bcma.h> - #include <linux/delay.h> -+#include <linux/gpio/consumer.h> - #include <linux/platform_device.h> - #include <linux/module.h> - #include <linux/slab.h> -@@ -36,6 +37,7 @@ MODULE_LICENSE("GPL"); - struct bcma_hcd_device { - struct platform_device *ehci_dev; - struct platform_device *ohci_dev; -+ struct gpio_desc *gpio_desc; - }; - - /* Wait for bitmask in a register to get set or cleared. -@@ -228,19 +230,12 @@ static void bcma_hcd_init_chip_arm(struc - - static void bcma_hci_platform_power_gpio(struct bcma_device *dev, bool val) - { -- int gpio; -+ struct bcma_hcd_device *usb_dev = bcma_get_drvdata(dev); - -- gpio = of_get_named_gpio(dev->dev.of_node, "vcc-gpio", 0); -- if (!gpio_is_valid(gpio)) -+ if (IS_ERR_OR_NULL(usb_dev->gpio_desc)) - return; - -- if (val) { -- gpio_request(gpio, "bcma-hcd-gpio"); -- gpio_set_value(gpio, 1); -- } else { -- gpio_set_value(gpio, 0); -- gpio_free(gpio); -- } -+ gpiod_set_value(usb_dev->gpio_desc, val); - } - - static const struct usb_ehci_pdata ehci_pdata = { -@@ -314,7 +309,11 @@ static int bcma_hcd_probe(struct bcma_de - if (!usb_dev) - return -ENOMEM; - -- bcma_hci_platform_power_gpio(dev, true); -+ if (dev->dev.of_node) -+ usb_dev->gpio_desc = devm_get_gpiod_from_child(&dev->dev, "vcc", -+ &dev->dev.of_node->fwnode); -+ if (!IS_ERR_OR_NULL(usb_dev->gpio_desc)) -+ gpiod_direction_output(usb_dev->gpio_desc, 1); - - switch (dev->id.id) { - case BCMA_CORE_NS_USB20: |