From ccbbb117c17eaf108216830bdd1e85a551ccc031 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 7 Jan 2020 15:10:29 +0100 Subject: leds: ns2: Convert to GPIO descriptors This converts the NS2 LED driver to use GPIO descriptors. We take care to request the GPIOs "as is" which is what the current driver goes to lengths to achieve, then we use GPIOs throughout. As the nodes for each LED does not have any corresponding device, we need to use the DT-specific accessors to get these GPIO descriptors from the device tree. Cc: Vincent Donnefort Signed-off-by: Linus Walleij Tested-by: Simon Guinot Signed-off-by: Pavel Machek --- drivers/leds/leds-ns2.c | 73 +++++++++++++++++++++---------------------------- 1 file changed, 31 insertions(+), 42 deletions(-) (limited to 'drivers/leds') diff --git a/drivers/leds/leds-ns2.c b/drivers/leds/leds-ns2.c index 6d37dda12c39..538ca5755602 100644 --- a/drivers/leds/leds-ns2.c +++ b/drivers/leds/leds-ns2.c @@ -33,8 +33,8 @@ struct ns2_led_modval { struct ns2_led { const char *name; const char *default_trigger; - unsigned cmd; - unsigned slow; + struct gpio_desc *cmd; + struct gpio_desc *slow; int num_modes; struct ns2_led_modval *modval; }; @@ -53,8 +53,8 @@ struct ns2_led_platform_data { struct ns2_led_data { struct led_classdev cdev; - unsigned int cmd; - unsigned int slow; + struct gpio_desc *cmd; + struct gpio_desc *slow; bool can_sleep; unsigned char sata; /* True when SATA mode active. */ rwlock_t rw_lock; /* Lock GPIOs. */ @@ -70,8 +70,8 @@ static int ns2_led_get_mode(struct ns2_led_data *led_dat, int cmd_level; int slow_level; - cmd_level = gpio_get_value_cansleep(led_dat->cmd); - slow_level = gpio_get_value_cansleep(led_dat->slow); + cmd_level = gpiod_get_value_cansleep(led_dat->cmd); + slow_level = gpiod_get_value_cansleep(led_dat->slow); for (i = 0; i < led_dat->num_modes; i++) { if (cmd_level == led_dat->modval[i].cmd_level && @@ -104,15 +104,15 @@ static void ns2_led_set_mode(struct ns2_led_data *led_dat, write_lock_irqsave(&led_dat->rw_lock, flags); if (!led_dat->can_sleep) { - gpio_set_value(led_dat->cmd, - led_dat->modval[i].cmd_level); - gpio_set_value(led_dat->slow, - led_dat->modval[i].slow_level); + gpiod_set_value(led_dat->cmd, + led_dat->modval[i].cmd_level); + gpiod_set_value(led_dat->slow, + led_dat->modval[i].slow_level); goto exit_unlock; } - gpio_set_value_cansleep(led_dat->cmd, led_dat->modval[i].cmd_level); - gpio_set_value_cansleep(led_dat->slow, led_dat->modval[i].slow_level); + gpiod_set_value_cansleep(led_dat->cmd, led_dat->modval[i].cmd_level); + gpiod_set_value_cansleep(led_dat->slow, led_dat->modval[i].slow_level); exit_unlock: write_unlock_irqrestore(&led_dat->rw_lock, flags); @@ -200,26 +200,6 @@ create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat, int ret; enum ns2_led_modes mode; - ret = devm_gpio_request_one(&pdev->dev, template->cmd, - gpio_get_value_cansleep(template->cmd) ? - GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW, - template->name); - if (ret) { - dev_err(&pdev->dev, "%s: failed to setup command GPIO\n", - template->name); - return ret; - } - - ret = devm_gpio_request_one(&pdev->dev, template->slow, - gpio_get_value_cansleep(template->slow) ? - GPIOF_OUT_INIT_HIGH : GPIOF_OUT_INIT_LOW, - template->name); - if (ret) { - dev_err(&pdev->dev, "%s: failed to setup slow GPIO\n", - template->name); - return ret; - } - rwlock_init(&led_dat->rw_lock); led_dat->cdev.name = template->name; @@ -229,8 +209,8 @@ create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat, led_dat->cdev.groups = ns2_led_groups; led_dat->cmd = template->cmd; led_dat->slow = template->slow; - led_dat->can_sleep = gpio_cansleep(led_dat->cmd) | - gpio_cansleep(led_dat->slow); + led_dat->can_sleep = gpiod_cansleep(led_dat->cmd) | + gpiod_cansleep(led_dat->slow); if (led_dat->can_sleep) led_dat->cdev.brightness_set_blocking = ns2_led_set_blocking; else @@ -285,17 +265,26 @@ ns2_leds_get_of_pdata(struct device *dev, struct ns2_led_platform_data *pdata) const char *string; int i, num_modes; struct ns2_led_modval *modval; + struct gpio_desc *gd; - ret = of_get_named_gpio(child, "cmd-gpio", 0); - if (ret < 0) - goto err_node_put; - led->cmd = ret; - ret = of_get_named_gpio(child, "slow-gpio", 0); - if (ret < 0) - goto err_node_put; - led->slow = ret; ret = of_property_read_string(child, "label", &string); led->name = (ret == 0) ? string : child->name; + + gd = gpiod_get_from_of_node(child, "cmd-gpio", 0, + GPIOD_ASIS, led->name); + if (IS_ERR(gd)) { + ret = PTR_ERR(gd); + goto err_node_put; + } + led->cmd = gd; + gd = gpiod_get_from_of_node(child, "slow-gpio", 0, + GPIOD_ASIS, led->name); + if (IS_ERR(gd)) { + ret = PTR_ERR(gd); + goto err_node_put; + } + led->slow = gd; + ret = of_property_read_string(child, "linux,default-trigger", &string); if (ret == 0) -- cgit v1.2.3-58-ga151