From f72deb717d5b80b3b90ebcb4e4b73b041e2eb465 Mon Sep 17 00:00:00 2001 From: Marek Behún Date: Fri, 18 Sep 2020 00:33:27 +0200 Subject: leds: ns2: move parsing of one LED into separate function MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Move parsing of DT properties of one LED into separate function. This saves indentation level and is nicer to read. Signed-off-by: Marek Behún Cc: Simon Guinot Cc: Simon Guinot Cc: Vincent Donnefort Cc: Thomas Petazzoni Cc: Linus Walleij Signed-off-by: Pavel Machek --- drivers/leds/leds-ns2.c | 120 ++++++++++++++++++++++-------------------------- 1 file changed, 55 insertions(+), 65 deletions(-) (limited to 'drivers/leds') diff --git a/drivers/leds/leds-ns2.c b/drivers/leds/leds-ns2.c index 0e9c2f49b635..46d4f7e963c0 100644 --- a/drivers/leds/leds-ns2.c +++ b/drivers/leds/leds-ns2.c @@ -230,6 +230,57 @@ create_ns2_led(struct platform_device *pdev, struct ns2_led_data *led_dat, return devm_led_classdev_register(&pdev->dev, &led_dat->cdev); } +static int ns2_leds_parse_one(struct device *dev, struct device_node *np, + struct ns2_led *led) +{ + struct ns2_led_modval *modval; + int nmodes, ret, i; + + ret = of_property_read_string(np, "label", &led->name); + if (ret) + led->name = np->name; + + led->cmd = gpiod_get_from_of_node(np, "cmd-gpio", 0, GPIOD_ASIS, + led->name); + if (IS_ERR(led->cmd)) + return PTR_ERR(led->cmd); + + led->slow = gpiod_get_from_of_node(np, "slow-gpio", 0, GPIOD_ASIS, + led->name); + if (IS_ERR(led->slow)) + return PTR_ERR(led->slow); + + of_property_read_string(np, "linux,default-trigger", + &led->default_trigger); + + ret = of_property_count_u32_elems(np, "modes-map"); + if (ret < 0 || ret % 3) { + dev_err(dev, "Missing or malformed modes-map for %pOF\n", np); + return -EINVAL; + } + + nmodes = ret / 3; + modval = devm_kcalloc(dev, nmodes, sizeof(*modval), GFP_KERNEL); + if (!modval) + return -ENOMEM; + + for (i = 0; i < nmodes; i++) { + u32 val; + + of_property_read_u32_index(np, "modes-map", 3 * i, &val); + modval[i].mode = val; + of_property_read_u32_index(np, "modes-map", 3 * i + 1, &val); + modval[i].cmd_level = val; + of_property_read_u32_index(np, "modes-map", 3 * i + 2, &val); + modval[i].slow_level = val; + } + + led->num_modes = nmodes; + led->modval = modval; + + return 0; +} + /* * Translate OpenFirmware node properties into platform_data. */ @@ -252,78 +303,17 @@ ns2_leds_parse_of(struct device *dev, struct ns2_led_of *ofdata) led = leds; for_each_available_child_of_node(np, child) { - const char *string; - int i, num_modes; - struct ns2_led_modval *modval; - struct gpio_desc *gd; - - 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) - led->default_trigger = string; - - ret = of_property_count_u32_elems(child, "modes-map"); - if (ret < 0 || ret % 3) { - dev_err(dev, - "Missing or malformed modes-map property\n"); - ret = -EINVAL; - goto err_node_put; - } - - num_modes = ret / 3; - modval = devm_kcalloc(dev, - num_modes, - sizeof(struct ns2_led_modval), - GFP_KERNEL); - if (!modval) { - ret = -ENOMEM; - goto err_node_put; - } - - for (i = 0; i < num_modes; i++) { - of_property_read_u32_index(child, - "modes-map", 3 * i, - (u32 *) &modval[i].mode); - of_property_read_u32_index(child, - "modes-map", 3 * i + 1, - (u32 *) &modval[i].cmd_level); - of_property_read_u32_index(child, - "modes-map", 3 * i + 2, - (u32 *) &modval[i].slow_level); + ret = ns2_leds_parse_one(dev, child, led++); + if (ret < 0) { + of_node_put(child); + return ret; } - - led->num_modes = num_modes; - led->modval = modval; - - led++; } ofdata->leds = leds; ofdata->num_leds = num_leds; return 0; - -err_node_put: - of_node_put(child); - return ret; } static const struct of_device_id of_ns2_leds_match[] = { -- cgit v1.2.3