Jacek On 10/11/19 3:36 PM, Jacek Anaszewski wrote:
Dan, On 10/11/19 3:06 PM, Dan Murphy wrote:Add multicolor framework support for the lp55xx family. Signed-off-by: Dan Murphy <dmurphy@xxxxxx> --- drivers/leds/Kconfig | 1 + drivers/leds/leds-lp55xx-common.c | 176 +++++++++++++++++++--- drivers/leds/leds-lp55xx-common.h | 9 ++ include/linux/platform_data/leds-lp55xx.h | 7 + 4 files changed, 169 insertions(+), 24 deletions(-) diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index fb614a6b9afa..5706bf8d8bd1 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -377,6 +377,7 @@ config LEDS_LP50XX config LEDS_LP55XX_COMMON tristate "Common Driver for TI/National LP5521/5523/55231/5562/8501" depends on LEDS_LP5521 || LEDS_LP5523 || LEDS_LP5562 || LEDS_LP8501 + depends on OF select FW_LOADER select FW_LOADER_USER_HELPER help diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c index 44ced02b49f9..1417df6df8a7 100644 --- a/drivers/leds/leds-lp55xx-common.c +++ b/drivers/leds/leds-lp55xx-common.c @@ -131,14 +131,54 @@ static struct attribute *lp55xx_led_attrs[] = { }; ATTRIBUTE_GROUPS(lp55xx_led);+static int lp55xx_map_channel(struct lp55xx_led *led, int color_id,+ enum led_brightness brightness) +{ + int i; + + for (i = 0; i < led->mc_cdev.num_leds; i++) { + if (led->color_component[i].color_id == color_id) { + led->color_component[i].brightness = brightness; + return 0; + } + } + + return -EINVAL; +} + static int lp55xx_set_brightness(struct led_classdev *cdev, enum led_brightness brightness) { + struct led_mc_color_conversion color_component[LP55XX_MAX_GROUPED_CHAN]; struct lp55xx_led *led = cdev_to_lp55xx_led(cdev); struct lp55xx_device_config *cfg = led->chip->cfg; + int ret; + int i;- led->brightness = (u8)brightness;- return cfg->brightness_fn(led); + if (led->mc_cdev.num_leds > 1) { + if (!cfg->color_intensity_fn) + return -EINVAL; + + led_mc_calc_color_components(&led->mc_cdev, brightness, + color_component); + + for (i = 0; i < led->mc_cdev.num_leds; i++) { + ret = lp55xx_map_channel(led, + color_component[i].color_id, + color_component[i].brightness); + if (ret) + return ret; + } + + ret = cfg->color_intensity_fn(led); + if (ret) + return ret; + } else { + led->brightness = (u8)brightness; + ret = cfg->brightness_fn(led); + } + + return ret; }static int lp55xx_init_led(struct lp55xx_led *led,@@ -147,9 +187,9 @@ static int lp55xx_init_led(struct lp55xx_led *led, struct lp55xx_platform_data *pdata = chip->pdata; struct lp55xx_device_config *cfg = chip->cfg; struct device *dev = &chip->cl->dev; + int max_channel = cfg->max_channel; char name[32]; int ret; - int max_channel = cfg->max_channel;if (chan >= max_channel) {dev_err(dev, "invalid channel: %d / %d\n", chan, max_channel); @@ -159,10 +199,34 @@ static int lp55xx_init_led(struct lp55xx_led *led, if (pdata->led_config[chan].led_current == 0) return 0;+ if (pdata->led_config[chan].name) {+ led->cdev.name = pdata->led_config[chan].name; + } else { + snprintf(name, sizeof(name), "%s:channel%d", + pdata->label ? : chip->cl->name, chan); + led->cdev.name = name; + } + + if (pdata->led_config[chan].num_colors > 1) { + led->mc_cdev.led_cdev = &led->cdev; + led->cdev.brightness_set_blocking = lp55xx_set_brightness; + led->cdev.groups = lp55xx_led_groups; + led->mc_cdev.num_leds = pdata->led_config[chan].num_colors; + led->mc_cdev.available_colors = + pdata->led_config[chan].available_colors; + memcpy(led->color_component, + pdata->led_config[chan].color_component, + sizeof(led->color_component)); + } else { + + led->cdev.default_trigger = + pdata->led_config[chan].default_trigger; + led->cdev.brightness_set_blocking = lp55xx_set_brightness; + } led->cdev.groups = lp55xx_led_groups; + led->led_current = pdata->led_config[chan].led_current; led->max_current = pdata->led_config[chan].max_current; led->chan_nr = pdata->led_config[chan].chan_nr; - led->cdev.default_trigger = pdata->led_config[chan].default_trigger;if (led->chan_nr >= max_channel) {dev_err(dev, "Use channel numbers between 0 and %d\n", @@ -170,18 +234,11 @@ static int lp55xx_init_led(struct lp55xx_led *led, return -EINVAL; }- led->cdev.brightness_set_blocking = lp55xx_set_brightness;- led->cdev.groups = lp55xx_led_groups; - - if (pdata->led_config[chan].name) { - led->cdev.name = pdata->led_config[chan].name; - } else { - snprintf(name, sizeof(name), "%s:channel%d", - pdata->label ? : chip->cl->name, chan); - led->cdev.name = name; - } + if (pdata->led_config[chan].num_colors > 1) + ret = led_classdev_multicolor_register(dev, &led->mc_cdev); + else + ret = led_classdev_register(dev, &led->cdev);Why not devm versions?
I will change the multicolor but not the led_classdev
- ret = led_classdev_register(dev, &led->cdev); if (ret) { dev_err(dev, "led register err: %d\n", ret); return ret; @@ -466,7 +523,6 @@ int lp55xx_register_leds(struct lp55xx_led *led, struct lp55xx_chip *chip) dev_err(&chip->cl->dev, "empty brightness configuration\n"); return -EINVAL; } -This empty line removal was not intended I suppose.
I can put it back
for (i = 0; i < num_channels; i++) {/* do not initialize channels that are not connected */@@ -538,6 +594,82 @@ void lp55xx_unregister_sysfs(struct lp55xx_chip *chip) } EXPORT_SYMBOL_GPL(lp55xx_unregister_sysfs);+static int lp5xx_parse_common_child(struct device_node *np,+ struct lp55xx_led_config *cfg, + int chan_num, bool is_multicolor, + int color_num) +{ + u32 led_number; + int ret; + + of_property_read_string(np, "chan-name", + &cfg[chan_num].name); + of_property_read_u8(np, "led-cur", + &cfg[chan_num].led_current); + of_property_read_u8(np, "max-cur", + &cfg[chan_num].max_current); + + ret = of_property_read_u32(np, "reg", &led_number); + if (ret) + return ret; + + if (led_number < 0 || led_number > 6) + return -EINVAL; + + if (is_multicolor) + cfg[chan_num].color_component[color_num].output_num = + led_number; + else + cfg[chan_num].chan_nr = led_number; + + return 0; +} + +static int lp5xx_parse_channel_child(struct device_node *np, + struct lp55xx_led_config *cfg, + int child_number) +{ + struct device_node *child; + int channel_color; + int num_colors = 0; + u32 color_id; + int ret; + + cfg[child_number].default_trigger = + of_get_property(np, "linux,default-trigger", NULL); + + ret = of_property_read_u32(np, "color", &channel_color); + if (ret) + channel_color = ret; + + + if (channel_color == LED_COLOR_ID_MULTI) { + for_each_child_of_node(np, child) { + ret = lp5xx_parse_common_child(child, cfg, + child_number, true, + num_colors); + if (ret) + return ret; + + ret = of_property_read_u32(child, "color", &color_id); + if (ret) + return ret; + + cfg[child_number].color_component[num_colors].color_id = + color_id; + set_bit(color_id, &cfg[child_number].available_colors); + num_colors++; + } + + cfg[child_number].num_colors = num_colors; + } else { + return lp5xx_parse_common_child(np, cfg, child_number, false, + num_colors); + } + + return 0; +} + struct lp55xx_platform_data *lp55xx_of_populate_pdata(struct device *dev, struct device_node *np) { @@ -546,6 +678,7 @@ struct lp55xx_platform_data *lp55xx_of_populate_pdata(struct device *dev, struct lp55xx_led_config *cfg; int num_channels; int i = 0; + int ret;pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);if (!pdata) @@ -565,14 +698,9 @@ struct lp55xx_platform_data *lp55xx_of_populate_pdata(struct device *dev, pdata->num_channels = num_channels;for_each_child_of_node(np, child) {- cfg[i].chan_nr = i; - - of_property_read_string(child, "chan-name", &cfg[i].name); - of_property_read_u8(child, "led-cur", &cfg[i].led_current); - of_property_read_u8(child, "max-cur", &cfg[i].max_current); - cfg[i].default_trigger = - of_get_property(child, "linux,default-trigger", NULL); - + ret = lp5xx_parse_channel_child(child, cfg, i); + if (ret) + return ERR_PTR(-EINVAL); i++; }diff --git a/drivers/leds/leds-lp55xx-common.h b/drivers/leds/leds-lp55xx-common.hindex 783ed5103ce5..75d57fb835c3 100644 --- a/drivers/leds/leds-lp55xx-common.h +++ b/drivers/leds/leds-lp55xx-common.h @@ -12,6 +12,8 @@ #ifndef _LEDS_LP55XX_COMMON_H #define _LEDS_LP55XX_COMMON_H+#include <linux/led-class-multicolor.h>+ enum lp55xx_engine_index { LP55XX_ENGINE_INVALID, LP55XX_ENGINE_1, @@ -109,6 +111,9 @@ struct lp55xx_device_config { /* access brightness register */ int (*brightness_fn)(struct lp55xx_led *led);+ /* access specific brightness register */+ int (*color_intensity_fn)(struct lp55xx_led *led);Wouldn't multicolor_brightness_fn be more accurate now ?
So just change the name to multicolor_brightness_fn? Dan
