From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752774AbaJQMDg (ORCPT ); Fri, 17 Oct 2014 08:03:36 -0400 Received: from v094114.home.net.pl ([79.96.170.134]:54820 "HELO v094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751701AbaJQMDa (ORCPT ); Fri, 17 Oct 2014 08:03:30 -0400 From: "Rafael J. Wysocki" To: Linux Kernel Mailing List Cc: Greg Kroah-Hartman , Grant Likely , Arnd Bergmann , Mika Westerberg , ACPI Devel Maling List , Aaron Lu , devicetree@vger.kernel.org, Linus Walleij , Alexandre Courbot , Dmitry Torokhov , Bryan Wu , Darren Hart , Mark Rutland Subject: [PATCH v5 11/12] leds: leds-gpio: Make use of device property API Date: Fri, 17 Oct 2014 14:17:06 +0200 Message-ID: <1613334.1azzQyUjuA@vostro.rjw.lan> User-Agent: KMail/4.11.5 (Linux/3.16.0-rc5+; KDE/4.11.5; x86_64; ; ) In-Reply-To: <11223831.j9KAEfSQsY@vostro.rjw.lan> References: <2660541.BycO7TFnA2@vostro.rjw.lan> <11223831.j9KAEfSQsY@vostro.rjw.lan> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Rafael J. Wysocki Make use of device property API in this driver so that both OF and ACPI based system can use the same driver. This change contains material from Max Eliaser and Mika Westerberg. Signed-off-by: Mika Westerberg Acked-by: Bryan Wu Signed-off-by: Rafael J. Wysocki --- drivers/leds/leds-gpio.c | 62 ++++++++++++++++++----------------------------- 1 file changed, 25 insertions(+), 37 deletions(-) Index: linux-pm/drivers/leds/leds-gpio.c =================================================================== --- linux-pm.orig/drivers/leds/leds-gpio.c +++ linux-pm/drivers/leds/leds-gpio.c @@ -15,13 +15,11 @@ #include #include #include -#include -#include -#include #include #include #include #include +#include struct gpio_led_data { struct led_classdev cdev; @@ -171,40 +169,37 @@ static inline int sizeof_gpio_leds_priv( (sizeof(struct gpio_led_data) * num_leds); } -/* Code to create from OpenFirmware platform devices */ -#ifdef CONFIG_OF_GPIO -static struct gpio_leds_priv *gpio_leds_create_of(struct platform_device *pdev) +static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev) { - struct device_node *np = pdev->dev.of_node, *child; + struct device *dev = &pdev->dev; + struct fwnode_handle *child; struct gpio_leds_priv *priv; int count, ret; - /* count LEDs in this device, so we know how much to allocate */ - count = of_get_available_child_count(np); + count = device_get_child_node_count(dev); if (!count) return ERR_PTR(-ENODEV); - for_each_available_child_of_node(np, child) - if (of_get_gpio(child, 0) == -EPROBE_DEFER) - return ERR_PTR(-EPROBE_DEFER); - - priv = devm_kzalloc(&pdev->dev, sizeof_gpio_leds_priv(count), - GFP_KERNEL); + priv = devm_kzalloc(dev, sizeof_gpio_leds_priv(count), GFP_KERNEL); if (!priv) return ERR_PTR(-ENOMEM); - for_each_available_child_of_node(np, child) { + device_for_each_child_node(dev, child) { struct gpio_led led = {}; - enum of_gpio_flags flags; - const char *state; + const char *state = NULL; + + led.gpiod = devm_get_named_gpiod_from_child(dev, child, "gpios", 0); + if (IS_ERR(led.gpiod)) { + fwnode_handle_put(child); + goto err; + } + + fwnode_property_read_string(child, "label", &led.name); + fwnode_property_read_string(child, "linux,default-trigger", + &led.default_trigger); - led.gpio = of_get_gpio_flags(child, 0, &flags); - led.active_low = flags & OF_GPIO_ACTIVE_LOW; - led.name = of_get_property(child, "label", NULL) ? : child->name; - led.default_trigger = - of_get_property(child, "linux,default-trigger", NULL); - state = of_get_property(child, "default-state", NULL); - if (state) { + if (!fwnode_property_read_string(child, "linux,default_state", + &state)) { if (!strcmp(state, "keep")) led.default_state = LEDS_GPIO_DEFSTATE_KEEP; else if (!strcmp(state, "on")) @@ -213,13 +208,13 @@ static struct gpio_leds_priv *gpio_leds_ led.default_state = LEDS_GPIO_DEFSTATE_OFF; } - if (of_get_property(child, "retain-state-suspended", NULL)) + if (fwnode_property_present(child, "retain-state-suspended")) led.retain_state_suspended = 1; ret = create_gpio_led(&led, &priv->leds[priv->num_leds++], - &pdev->dev, NULL); + dev, NULL); if (ret < 0) { - of_node_put(child); + fwnode_handle_put(child); goto err; } } @@ -238,13 +233,6 @@ static const struct of_device_id of_gpio }; MODULE_DEVICE_TABLE(of, of_gpio_leds_match); -#else /* CONFIG_OF_GPIO */ -static struct gpio_leds_priv *gpio_leds_create_of(struct platform_device *pdev) -{ - return ERR_PTR(-ENODEV); -} -#endif /* CONFIG_OF_GPIO */ - static int gpio_led_probe(struct platform_device *pdev) { @@ -273,7 +261,7 @@ static int gpio_led_probe(struct platfor } } } else { - priv = gpio_leds_create_of(pdev); + priv = gpio_leds_create(pdev); if (IS_ERR(priv)) return PTR_ERR(priv); } @@ -300,7 +288,7 @@ static struct platform_driver gpio_led_d .driver = { .name = "leds-gpio", .owner = THIS_MODULE, - .of_match_table = of_match_ptr(of_gpio_leds_match), + .of_match_table = of_gpio_leds_match, }, };