From: Dan Murphy <dmurphy@ti.com>
To: <jacek.anaszewski@gmail.com>, <pavel@ucw.cz>
Cc: <linux-leds@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
Dan Murphy <dmurphy@ti.com>
Subject: [RESEND PATCH v17 12/17] leds: lp55xx: Add multicolor framework support to lp55xx
Date: Mon, 27 Jan 2020 09:00:27 -0600 [thread overview]
Message-ID: <20200127150032.31350-13-dmurphy@ti.com> (raw)
In-Reply-To: <20200127150032.31350-1-dmurphy@ti.com>
Add multicolor framework support for the lp55xx family.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
drivers/leds/Kconfig | 1 +
drivers/leds/leds-lp5521.c | 14 +-
drivers/leds/leds-lp5523.c | 14 +-
drivers/leds/leds-lp5562.c | 13 +-
drivers/leds/leds-lp55xx-common.c | 200 +++++++++++++++++++---
drivers/leds/leds-lp55xx-common.h | 12 +-
drivers/leds/leds-lp8501.c | 14 +-
include/linux/platform_data/leds-lp55xx.h | 8 +
8 files changed, 228 insertions(+), 48 deletions(-)
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 01c879005b83..5dc6535a88ef 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-lp5521.c b/drivers/leds/leds-lp5521.c
index 6d2163c0f625..6ff81d6be789 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -505,9 +505,16 @@ static int lp5521_probe(struct i2c_client *client,
struct lp55xx_platform_data *pdata = dev_get_platdata(&client->dev);
struct device_node *np = client->dev.of_node;
+ chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ chip->cfg = &lp5521_cfg;
+
if (!pdata) {
if (np) {
- pdata = lp55xx_of_populate_pdata(&client->dev, np);
+ pdata = lp55xx_of_populate_pdata(&client->dev, np,
+ chip);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
} else {
@@ -516,10 +523,6 @@ static int lp5521_probe(struct i2c_client *client,
}
}
- chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
- if (!chip)
- return -ENOMEM;
-
led = devm_kcalloc(&client->dev,
pdata->num_channels, sizeof(*led), GFP_KERNEL);
if (!led)
@@ -527,7 +530,6 @@ static int lp5521_probe(struct i2c_client *client,
chip->cl = client;
chip->pdata = pdata;
- chip->cfg = &lp5521_cfg;
mutex_init(&chip->lock);
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index 15e7051392f5..b076c16df9ab 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -872,9 +872,16 @@ static int lp5523_probe(struct i2c_client *client,
struct lp55xx_platform_data *pdata = dev_get_platdata(&client->dev);
struct device_node *np = client->dev.of_node;
+ chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ chip->cfg = &lp5523_cfg;
+
if (!pdata) {
if (np) {
- pdata = lp55xx_of_populate_pdata(&client->dev, np);
+ pdata = lp55xx_of_populate_pdata(&client->dev, np,
+ chip);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
} else {
@@ -883,10 +890,6 @@ static int lp5523_probe(struct i2c_client *client,
}
}
- chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
- if (!chip)
- return -ENOMEM;
-
led = devm_kcalloc(&client->dev,
pdata->num_channels, sizeof(*led), GFP_KERNEL);
if (!led)
@@ -894,7 +897,6 @@ static int lp5523_probe(struct i2c_client *client,
chip->cl = client;
chip->pdata = pdata;
- chip->cfg = &lp5523_cfg;
mutex_init(&chip->lock);
diff --git a/drivers/leds/leds-lp5562.c b/drivers/leds/leds-lp5562.c
index 1c94422408b0..7ecdd199d7ef 100644
--- a/drivers/leds/leds-lp5562.c
+++ b/drivers/leds/leds-lp5562.c
@@ -520,9 +520,16 @@ static int lp5562_probe(struct i2c_client *client,
struct lp55xx_platform_data *pdata = dev_get_platdata(&client->dev);
struct device_node *np = client->dev.of_node;
+ chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ chip->cfg = &lp5562_cfg;
+
if (!pdata) {
if (np) {
- pdata = lp55xx_of_populate_pdata(&client->dev, np);
+ pdata = lp55xx_of_populate_pdata(&client->dev, np,
+ chip);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
} else {
@@ -531,9 +538,6 @@ static int lp5562_probe(struct i2c_client *client,
}
}
- chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
- if (!chip)
- return -ENOMEM;
led = devm_kcalloc(&client->dev,
pdata->num_channels, sizeof(*led), GFP_KERNEL);
@@ -542,7 +546,6 @@ static int lp5562_probe(struct i2c_client *client,
chip->cl = client;
chip->pdata = pdata;
- chip->cfg = &lp5562_cfg;
mutex_init(&chip->lock);
diff --git a/drivers/leds/leds-lp55xx-common.c b/drivers/leds/leds-lp55xx-common.c
index 882ef39e4965..c2087a654ea8 100644
--- a/drivers/leds/leds-lp55xx-common.c
+++ b/drivers/leds/leds-lp55xx-common.c
@@ -131,14 +131,62 @@ static struct attribute *lp55xx_led_attrs[] = {
};
ATTRIBUTE_GROUPS(lp55xx_led);
+#if IS_ENABLED(CONFIG_LEDS_CLASS_MULTI_COLOR)
+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_components[i].color_id == color_id) {
+ led->color_components[i].brightness = brightness;
+ return 0;
+ }
+ }
+
+ return -EINVAL;
+}
+#endif
+
+static int lp55xx_set_mc_brightness(struct lp55xx_led *led,
+ struct lp55xx_device_config *cfg,
+ enum led_brightness brightness)
+{
+ int ret = -EINVAL;
+#if IS_ENABLED(CONFIG_LEDS_CLASS_MULTI_COLOR)
+ struct led_mc_color_conversion color_components[LP55XX_MAX_GROUPED_CHAN];
+ int i;
+
+ if (!cfg->multicolor_brightness_fn)
+ return -EINVAL;
+
+ led_mc_calc_color_components(&led->mc_cdev, brightness,
+ color_components);
+
+ for (i = 0; i < led->mc_cdev.num_leds; i++) {
+ ret = lp55xx_map_channel(led, color_components[i].color_id,
+ color_components[i].brightness);
+ if (ret)
+ return ret;
+ }
+
+ ret = cfg->multicolor_brightness_fn(led);
+#endif
+ return ret;
+}
+
static int lp55xx_set_brightness(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct lp55xx_led *led = cdev_to_lp55xx_led(cdev);
struct lp55xx_device_config *cfg = led->chip->cfg;
- led->brightness = (u8)brightness;
- return cfg->brightness_fn(led);
+ if (led->mc_cdev.num_leds > 1) {
+ return lp55xx_set_mc_brightness(led, cfg, brightness);
+ } else {
+ led->brightness = (u8)brightness;
+ return cfg->brightness_fn(led);
+ }
}
static int lp55xx_init_led(struct lp55xx_led *led,
@@ -147,9 +195,9 @@ 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 +207,34 @@ 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_components,
+ pdata->led_config[chan].color_components,
+ sizeof(led->color_components));
+ } 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 +242,13 @@ 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 IS_ENABLED(CONFIG_LEDS_CLASS_MULTI_COLOR)
+ if (pdata->led_config[chan].num_colors > 1)
+ ret = devm_led_classdev_multicolor_register(dev, &led->mc_cdev);
+ else
+#endif
+ ret = devm_led_classdev_register(dev, &led->cdev);
- 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;
- }
-
- ret = devm_led_classdev_register(dev, &led->cdev);
if (ret) {
dev_err(dev, "led register err: %d\n", ret);
return ret;
@@ -525,14 +592,103 @@ void lp55xx_unregister_sysfs(struct lp55xx_chip *chip)
}
EXPORT_SYMBOL_GPL(lp55xx_unregister_sysfs);
+static int lp55xx_parse_common_child(struct device_node *np,
+ struct lp55xx_led_config *cfg,
+ int led_number, int *chan_nr)
+{
+ int ret;
+
+ of_property_read_string(np, "chan-name",
+ &cfg[led_number].name);
+ of_property_read_u8(np, "led-cur",
+ &cfg[led_number].led_current);
+ of_property_read_u8(np, "max-cur",
+ &cfg[led_number].max_current);
+
+ ret = of_property_read_u32(np, "reg", chan_nr);
+ if (ret)
+ return ret;
+
+ if (*chan_nr < 0 || *chan_nr > cfg->max_channel)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int lp55xx_parse_mutli_led_child(struct device_node *child,
+ struct lp55xx_led_config *cfg,
+ int child_number, int color_number)
+{
+ int chan_nr, color_id, ret;
+
+ ret = lp55xx_parse_common_child(child, cfg, child_number, &chan_nr);
+ if (ret)
+ return ret;
+
+ ret = of_property_read_u32(child, "color", &color_id);
+ if (ret)
+ return ret;
+
+ cfg[child_number].color_components[color_number].color_id = color_id;
+ cfg[child_number].color_components[color_number].output_num = chan_nr;
+ set_bit(color_id, &cfg[child_number].available_colors);
+
+ return 0;
+}
+
+static int lp55xx_parse_mutli_led(struct device_node *np,
+ struct lp55xx_led_config *cfg,
+ int child_number)
+{
+ struct device_node *child;
+ int num_colors = 0, ret;
+
+ for_each_child_of_node(np, child) {
+ ret = lp55xx_parse_mutli_led_child(child, cfg, child_number,
+ num_colors);
+ if (ret)
+ return ret;
+ num_colors++;
+ }
+
+ return 0;
+}
+
+static int lp55xx_parse_logical_led(struct device_node *np,
+ struct lp55xx_led_config *cfg,
+ int child_number)
+{
+ int led_color, ret;
+
+ cfg[child_number].default_trigger =
+ of_get_property(np, "linux,default-trigger", NULL);
+
+ ret = of_property_read_u32(np, "color", &led_color);
+
+ if (ret) {
+ int chan_nr;
+ ret = lp55xx_parse_common_child(np, cfg, child_number,
+ &chan_nr);
+ if (ret < 0)
+ return ret;
+ cfg[child_number].chan_nr = chan_nr;
+ } else if (led_color == LED_COLOR_ID_MULTI) {
+ return lp55xx_parse_mutli_led(np, cfg, child_number);
+ }
+
+ return ret;
+}
+
struct lp55xx_platform_data *lp55xx_of_populate_pdata(struct device *dev,
- struct device_node *np)
+ struct device_node *np,
+ struct lp55xx_chip *chip)
{
struct device_node *child;
struct lp55xx_platform_data *pdata;
struct lp55xx_led_config *cfg;
int num_channels;
int i = 0;
+ int ret;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
@@ -550,16 +706,12 @@ struct lp55xx_platform_data *lp55xx_of_populate_pdata(struct device *dev,
pdata->led_config = &cfg[0];
pdata->num_channels = num_channels;
+ cfg->max_channel = chip->cfg->max_channel;
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 = lp55xx_parse_logical_led(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.h
index b9b1041e8143..18476051d3d2 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);
+ /* perform brightness value to multiple LEDs */
+ int (*multicolor_brightness_fn)(struct lp55xx_led *led);
+
/* current setting function */
void (*set_led_current) (struct lp55xx_led *led, u8 led_current);
@@ -159,6 +164,8 @@ struct lp55xx_chip {
* struct lp55xx_led
* @chan_nr : Channel number
* @cdev : LED class device
+ * @mc_cdev : Multi color class device
+ * @color_components: Multi color LED map information
* @led_current : Current setting at each led channel
* @max_current : Maximun current at each led channel
* @brightness : Brightness value
@@ -167,6 +174,8 @@ struct lp55xx_chip {
struct lp55xx_led {
int chan_nr;
struct led_classdev cdev;
+ struct led_classdev_mc mc_cdev;
+ struct led_mc_color_conversion color_components[LP55XX_MAX_GROUPED_CHAN];
u8 led_current;
u8 max_current;
u8 brightness;
@@ -196,6 +205,7 @@ extern void lp55xx_unregister_sysfs(struct lp55xx_chip *chip);
/* common device tree population function */
extern struct lp55xx_platform_data
-*lp55xx_of_populate_pdata(struct device *dev, struct device_node *np);
+*lp55xx_of_populate_pdata(struct device *dev, struct device_node *np,
+ struct lp55xx_chip *chip);
#endif /* _LEDS_LP55XX_COMMON_H */
diff --git a/drivers/leds/leds-lp8501.c b/drivers/leds/leds-lp8501.c
index a58019cdb8c3..ac2c31db4a65 100644
--- a/drivers/leds/leds-lp8501.c
+++ b/drivers/leds/leds-lp8501.c
@@ -308,9 +308,16 @@ static int lp8501_probe(struct i2c_client *client,
struct lp55xx_platform_data *pdata = dev_get_platdata(&client->dev);
struct device_node *np = client->dev.of_node;
+ chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ chip->cfg = &lp8501_cfg;
+
if (!pdata) {
if (np) {
- pdata = lp55xx_of_populate_pdata(&client->dev, np);
+ pdata = lp55xx_of_populate_pdata(&client->dev, np,
+ chip);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
} else {
@@ -319,10 +326,6 @@ static int lp8501_probe(struct i2c_client *client,
}
}
- chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
- if (!chip)
- return -ENOMEM;
-
led = devm_kcalloc(&client->dev,
pdata->num_channels, sizeof(*led), GFP_KERNEL);
if (!led)
@@ -330,7 +333,6 @@ static int lp8501_probe(struct i2c_client *client,
chip->cl = client;
chip->pdata = pdata;
- chip->cfg = &lp8501_cfg;
mutex_init(&chip->lock);
diff --git a/include/linux/platform_data/leds-lp55xx.h b/include/linux/platform_data/leds-lp55xx.h
index 96a787100fda..dca21b19a283 100644
--- a/include/linux/platform_data/leds-lp55xx.h
+++ b/include/linux/platform_data/leds-lp55xx.h
@@ -12,17 +12,25 @@
#ifndef _LEDS_LP55XX_H
#define _LEDS_LP55XX_H
+#include <linux/led-class-multicolor.h>
+
/* Clock configuration */
#define LP55XX_CLOCK_AUTO 0
#define LP55XX_CLOCK_INT 1
#define LP55XX_CLOCK_EXT 2
+#define LP55XX_MAX_GROUPED_CHAN 4
+
struct lp55xx_led_config {
const char *name;
const char *default_trigger;
u8 chan_nr;
u8 led_current; /* mA x10, 0 if led is not connected */
u8 max_current;
+ int num_colors;
+ unsigned int max_channel;
+ unsigned long available_colors;
+ struct led_mc_color_conversion color_components[LP55XX_MAX_GROUPED_CHAN];
};
struct lp55xx_predef_pattern {
--
2.25.0
next prev parent reply other threads:[~2020-01-27 15:04 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-27 15:00 [RESEND PATCH v17 00/17] Multi Color LED Framework Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 01/17] dt-bindings: leds: Add multicolor ID to the color ID list Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 02/17] " Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 03/17] leds: multicolor: Introduce a multicolor class definition Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 04/17] dt: bindings: lp50xx: Introduce the lp50xx family of RGB drivers Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 05/17] leds: lp50xx: Add the LP50XX family of the RGB LED driver Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 06/17] dt: bindings: lp55xx: Be consistent in the document with LED acronym Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 07/17] dt: bindings: lp55xx: Update binding for Multicolor Framework Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 08/17] ARM: dts: n900: Add reg property to the LP5523 channel node Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 09/17] ARM: dts: imx6dl-yapp4: Add reg property to the lp5562 " Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 10/17] ARM: dts: ste-href: Add reg property to the LP5521 channel nodes Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 11/17] leds: lp55xx: Convert LED class registration to devm_* Dan Murphy
2020-01-27 15:00 ` Dan Murphy [this message]
2020-01-27 15:00 ` [RESEND PATCH v17 13/17] leds: lp5523: Update the lp5523 code to add multicolor brightness function Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 14/17] leds: lp5521: Add multicolor framework multicolor brightness support Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 15/17] leds: lp55xx: Fix checkpatch file permissions issues Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 16/17] leds: lp5523: Fix checkpatch issues in the code Dan Murphy
2020-01-27 15:00 ` [RESEND PATCH v17 17/17] dt: bindings: Update lp55xx binding to recommended LED naming Dan Murphy
2020-02-12 13:09 ` [RESEND PATCH v17 00/17] Multi Color LED Framework Dan Murphy
2020-02-25 10:19 ` Pavel Machek
2020-02-25 22:17 ` Jacek Anaszewski
2020-02-25 22:44 ` Dan Murphy
2020-02-26 12:59 ` Pavel Machek
2020-02-26 20:45 ` Jacek Anaszewski
2020-02-26 22:10 ` Dan Murphy
2020-02-27 10:58 ` Pavel Machek
2020-02-27 12:43 ` Greg KH
2020-02-27 13:07 ` Dan Murphy
2020-02-27 13:29 ` Dan Murphy
2020-02-27 21:22 ` Jacek Anaszewski
2020-02-28 7:42 ` Greg KH
2020-02-28 9:34 ` Pavel Machek
2020-02-28 12:30 ` Dan Murphy
2020-02-28 9:39 ` Pavel Machek
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