leds: is31fl319x: Add support for is31fl319{0,1,3} chips
Set specific chipset structs values for is31fl319{0,1,3}
so that those chips can actually work.
Datasheets:
https://lumissil.com/assets/pdf/core/IS31FL3190_DS.pdf
https://lumissil.com/assets/pdf/core/IS31FL3191_DS.pdf
https://lumissil.com/assets/pdf/core/IS31FL3193_DS.pdf
https://lumissil.com/assets/pdf/core/IS31FL3196_DS.pdf
https://lumissil.com/assets/pdf/core/IS31FL3199_DS.pdf
Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
This commit is contained in:
Vincent Knecht
Pavel Machek
Родитель
bd34266fde
Коммит
fa877cf1ab
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@ -21,6 +21,31 @@
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/* register numbers */
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#define IS31FL319X_SHUTDOWN 0x00
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/* registers for 3190, 3191 and 3193 */
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#define IS31FL3190_BREATHING 0x01
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#define IS31FL3190_LEDMODE 0x02
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#define IS31FL3190_CURRENT 0x03
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#define IS31FL3190_PWM(channel) (0x04 + channel)
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#define IS31FL3190_DATA_UPDATE 0x07
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#define IS31FL3190_T0(channel) (0x0a + channel)
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#define IS31FL3190_T1T2(channel) (0x10 + channel)
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#define IS31FL3190_T3T4(channel) (0x16 + channel)
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#define IS31FL3190_TIME_UPDATE 0x1c
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#define IS31FL3190_LEDCONTROL 0x1d
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#define IS31FL3190_RESET 0x2f
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#define IS31FL3190_CURRENT_uA_MIN 5000
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#define IS31FL3190_CURRENT_uA_DEFAULT 42000
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#define IS31FL3190_CURRENT_uA_MAX 42000
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#define IS31FL3190_CURRENT_MASK GENMASK(4, 2)
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#define IS31FL3190_CURRENT_5_mA 0x02
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#define IS31FL3190_CURRENT_10_mA 0x01
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#define IS31FL3190_CURRENT_17dot5_mA 0x04
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#define IS31FL3190_CURRENT_30_mA 0x03
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#define IS31FL3190_CURRENT_42_mA 0x00
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/* registers for 3196 and 3199 */
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#define IS31FL3196_CTRL1 0x01
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#define IS31FL3196_CTRL2 0x02
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#define IS31FL3196_CONFIG1 0x03
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@ -93,6 +118,38 @@ static bool is31fl319x_readable_reg(struct device *dev, unsigned int reg)
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return false;
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}
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static bool is31fl3190_volatile_reg(struct device *dev, unsigned int reg)
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{
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/* volatile registers are not cached */
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switch (reg) {
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case IS31FL3190_DATA_UPDATE:
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case IS31FL3190_TIME_UPDATE:
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case IS31FL3190_RESET:
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return true; /* always write-through */
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default:
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return false;
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}
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}
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static const struct reg_default is31fl3190_reg_defaults[] = {
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{ IS31FL3190_LEDMODE, 0x00 },
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{ IS31FL3190_CURRENT, 0x00 },
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{ IS31FL3190_PWM(0), 0x00 },
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{ IS31FL3190_PWM(1), 0x00 },
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{ IS31FL3190_PWM(2), 0x00 },
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};
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static struct regmap_config is31fl3190_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = IS31FL3190_RESET,
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.cache_type = REGCACHE_FLAT,
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.readable_reg = is31fl319x_readable_reg,
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.volatile_reg = is31fl3190_volatile_reg,
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.reg_defaults = is31fl3190_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(is31fl3190_reg_defaults),
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};
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static bool is31fl3196_volatile_reg(struct device *dev, unsigned int reg)
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{
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/* volatile registers are not cached */
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@ -131,6 +188,60 @@ static struct regmap_config is31fl3196_regmap_config = {
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.num_reg_defaults = ARRAY_SIZE(is31fl3196_reg_defaults),
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};
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static int is31fl3190_brightness_set(struct led_classdev *cdev,
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enum led_brightness brightness)
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{
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struct is31fl319x_led *led = container_of(cdev, struct is31fl319x_led, cdev);
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struct is31fl319x_chip *is31 = led->chip;
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int chan = led - is31->leds;
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int ret;
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int i;
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u8 ctrl = 0;
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dev_dbg(&is31->client->dev, "%s %d: %d\n", __func__, chan, brightness);
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mutex_lock(&is31->lock);
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/* update PWM register */
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ret = regmap_write(is31->regmap, IS31FL3190_PWM(chan), brightness);
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if (ret < 0)
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goto out;
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/* read current brightness of all PWM channels */
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for (i = 0; i < is31->cdef->num_leds; i++) {
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unsigned int pwm_value;
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bool on;
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/*
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* since neither cdev nor the chip can provide
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* the current setting, we read from the regmap cache
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*/
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ret = regmap_read(is31->regmap, IS31FL3190_PWM(i), &pwm_value);
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on = ret >= 0 && pwm_value > LED_OFF;
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ctrl |= on << i;
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}
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if (ctrl > 0) {
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dev_dbg(&is31->client->dev, "power up %02x\n", ctrl);
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regmap_write(is31->regmap, IS31FL3190_LEDCONTROL, ctrl);
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/* update PWMs */
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regmap_write(is31->regmap, IS31FL3190_DATA_UPDATE, 0x00);
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/* enable chip from shut down and enable all channels */
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ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x20);
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} else {
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dev_dbg(&is31->client->dev, "power down\n");
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/* shut down (no need to clear LEDCONTROL) */
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ret = regmap_write(is31->regmap, IS31FL319X_SHUTDOWN, 0x01);
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}
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out:
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mutex_unlock(&is31->lock);
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return ret;
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}
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static int is31fl3196_brightness_set(struct led_classdev *cdev,
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enum led_brightness brightness)
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{
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@ -197,24 +308,24 @@ out:
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static const struct is31fl319x_chipdef is31fl3190_cdef = {
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.num_leds = 1,
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.reset_reg = IS31FL3196_RESET,
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.is31fl319x_regmap_config = &is31fl3196_regmap_config,
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.brightness_set = is31fl3196_brightness_set,
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.current_default = IS31FL3196_CURRENT_uA_DEFAULT,
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.current_min = IS31FL3196_CURRENT_uA_MIN,
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.current_max = IS31FL3196_CURRENT_uA_MAX,
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.is_3196or3199 = true,
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.reset_reg = IS31FL3190_RESET,
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.is31fl319x_regmap_config = &is31fl3190_regmap_config,
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.brightness_set = is31fl3190_brightness_set,
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.current_default = IS31FL3190_CURRENT_uA_DEFAULT,
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.current_min = IS31FL3190_CURRENT_uA_MIN,
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.current_max = IS31FL3190_CURRENT_uA_MAX,
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.is_3196or3199 = false,
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};
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static const struct is31fl319x_chipdef is31fl3193_cdef = {
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.num_leds = 3,
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.reset_reg = IS31FL3196_RESET,
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.is31fl319x_regmap_config = &is31fl3196_regmap_config,
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.brightness_set = is31fl3196_brightness_set,
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.current_default = IS31FL3196_CURRENT_uA_DEFAULT,
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.current_min = IS31FL3196_CURRENT_uA_MIN,
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.current_max = IS31FL3196_CURRENT_uA_MAX,
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.is_3196or3199 = true,
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.reset_reg = IS31FL3190_RESET,
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.is31fl319x_regmap_config = &is31fl3190_regmap_config,
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.brightness_set = is31fl3190_brightness_set,
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.current_default = IS31FL3190_CURRENT_uA_DEFAULT,
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.current_min = IS31FL3190_CURRENT_uA_MIN,
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.current_max = IS31FL3190_CURRENT_uA_MAX,
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.is_3196or3199 = false,
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};
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static const struct is31fl319x_chipdef is31fl3196_cdef = {
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@ -362,6 +473,25 @@ put_child_node:
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return ret;
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}
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static inline int is31fl3190_microamp_to_cs(struct device *dev, u32 microamp)
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{
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switch (microamp) {
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case 5000:
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return IS31FL3190_CURRENT_5_mA;
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case 10000:
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return IS31FL3190_CURRENT_10_mA;
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case 17500:
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return IS31FL3190_CURRENT_17dot5_mA;
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case 30000:
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return IS31FL3190_CURRENT_30_mA;
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case 42000:
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return IS31FL3190_CURRENT_42_mA;
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default:
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dev_warn(dev, "Unsupported current value: %d, using 5000 µA!\n", microamp);
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return IS31FL3190_CURRENT_5_mA;
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}
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}
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static inline int is31fl3196_microamp_to_cs(struct device *dev, u32 microamp)
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{ /* round down to nearest supported value (range check done by caller) */
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u32 step = microamp / IS31FL3196_CURRENT_uA_STEP;
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@ -438,6 +568,9 @@ static int is31fl319x_probe(struct i2c_client *client,
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regmap_write(is31->regmap, IS31FL3196_CONFIG2,
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is31fl3196_microamp_to_cs(dev, aggregated_led_microamp) |
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is31fl3196_db_to_gain(is31->audio_gain_db));
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else
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regmap_update_bits(is31->regmap, IS31FL3190_CURRENT, IS31FL3190_CURRENT_MASK,
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is31fl3190_microamp_to_cs(dev, aggregated_led_microamp));
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for (i = 0; i < is31->cdef->num_leds; i++) {
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struct is31fl319x_led *led = &is31->leds[i];
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