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leds: is31fl319x: Move chipset-specific values in chipdef struct
Allow setting chips' specifics in chipdef struct by adding fields for: - the reset register address - a pointer to a regmap_config struct - a pointer to a brightness_set function - current default, min and max values - a boolean to distinguish 319{0,1,3} and 319{6,9} chips and use those fields in places where distinction has to be made. The fields for 319{0,1,3} still point to 319{6,9} values. No functional change. Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org> Signed-off-by: Pavel Machek <pavel@ucw.cz>
This commit is contained in:
parent
8e6dde1b44
commit
bd34266fde
1 changed files with 127 additions and 85 deletions
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@ -78,39 +78,59 @@ struct is31fl319x_chip {
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struct is31fl319x_chipdef {
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int num_leds;
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u8 reset_reg;
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const struct regmap_config *is31fl319x_regmap_config;
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int (*brightness_set)(struct led_classdev *cdev, enum led_brightness brightness);
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u32 current_default;
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u32 current_min;
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u32 current_max;
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bool is_3196or3199;
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};
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static const struct is31fl319x_chipdef is31fl3190_cdef = {
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.num_leds = 1,
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static bool is31fl319x_readable_reg(struct device *dev, unsigned int reg)
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{
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/* we have no readable registers */
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return false;
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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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switch (reg) {
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case IS31FL3196_DATA_UPDATE:
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case IS31FL3196_TIME_UPDATE:
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case IS31FL3196_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 is31fl3196_reg_defaults[] = {
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{ IS31FL3196_CONFIG1, 0x00 },
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{ IS31FL3196_CONFIG2, 0x00 },
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{ IS31FL3196_PWM(0), 0x00 },
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{ IS31FL3196_PWM(1), 0x00 },
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{ IS31FL3196_PWM(2), 0x00 },
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{ IS31FL3196_PWM(3), 0x00 },
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{ IS31FL3196_PWM(4), 0x00 },
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{ IS31FL3196_PWM(5), 0x00 },
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{ IS31FL3196_PWM(6), 0x00 },
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{ IS31FL3196_PWM(7), 0x00 },
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{ IS31FL3196_PWM(8), 0x00 },
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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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static struct regmap_config is31fl3196_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = IS31FL3196_REG_CNT,
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.cache_type = REGCACHE_FLAT,
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.readable_reg = is31fl319x_readable_reg,
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.volatile_reg = is31fl3196_volatile_reg,
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.reg_defaults = is31fl3196_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(is31fl3196_reg_defaults),
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};
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static const struct is31fl319x_chipdef is31fl3196_cdef = {
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.num_leds = 6,
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};
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static const struct is31fl319x_chipdef is31fl3199_cdef = {
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.num_leds = 9,
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};
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static const struct of_device_id of_is31fl319x_match[] = {
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{ .compatible = "issi,is31fl3190", .data = &is31fl3190_cdef, },
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{ .compatible = "issi,is31fl3191", .data = &is31fl3190_cdef, },
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{ .compatible = "issi,is31fl3193", .data = &is31fl3193_cdef, },
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{ .compatible = "issi,is31fl3196", .data = &is31fl3196_cdef, },
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{ .compatible = "issi,is31fl3199", .data = &is31fl3199_cdef, },
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{ .compatible = "si-en,sn3190", .data = &is31fl3190_cdef, },
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{ .compatible = "si-en,sn3191", .data = &is31fl3190_cdef, },
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{ .compatible = "si-en,sn3193", .data = &is31fl3193_cdef, },
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{ .compatible = "si-en,sn3196", .data = &is31fl3196_cdef, },
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{ .compatible = "si-en,sn3199", .data = &is31fl3199_cdef, },
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{ }
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};
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MODULE_DEVICE_TABLE(of, of_is31fl319x_match);
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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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@ -175,9 +195,69 @@ static int is31fl3196_brightness_set(struct led_classdev *cdev,
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return ret;
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}
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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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};
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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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};
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static const struct is31fl319x_chipdef is31fl3196_cdef = {
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.num_leds = 6,
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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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};
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static const struct is31fl319x_chipdef is31fl3199_cdef = {
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.num_leds = 9,
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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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};
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static const struct of_device_id of_is31fl319x_match[] = {
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{ .compatible = "issi,is31fl3190", .data = &is31fl3190_cdef, },
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{ .compatible = "issi,is31fl3191", .data = &is31fl3190_cdef, },
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{ .compatible = "issi,is31fl3193", .data = &is31fl3193_cdef, },
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{ .compatible = "issi,is31fl3196", .data = &is31fl3196_cdef, },
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{ .compatible = "issi,is31fl3199", .data = &is31fl3199_cdef, },
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{ .compatible = "si-en,sn3190", .data = &is31fl3190_cdef, },
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{ .compatible = "si-en,sn3191", .data = &is31fl3190_cdef, },
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{ .compatible = "si-en,sn3193", .data = &is31fl3193_cdef, },
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{ .compatible = "si-en,sn3196", .data = &is31fl3196_cdef, },
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{ .compatible = "si-en,sn3199", .data = &is31fl3199_cdef, },
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{ }
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};
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MODULE_DEVICE_TABLE(of, of_is31fl319x_match);
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static int is31fl319x_parse_child_dt(const struct device *dev,
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const struct device_node *child,
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struct is31fl319x_led *led)
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struct is31fl319x_led *led,
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struct is31fl319x_chip *is31)
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{
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struct led_classdev *cdev = &led->cdev;
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int ret;
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@ -190,14 +270,14 @@ static int is31fl319x_parse_child_dt(const struct device *dev,
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if (ret < 0 && ret != -EINVAL) /* is optional */
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return ret;
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led->max_microamp = IS31FL3196_CURRENT_uA_DEFAULT;
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led->max_microamp = is31->cdef->current_default;
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ret = of_property_read_u32(child, "led-max-microamp",
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&led->max_microamp);
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if (!ret) {
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if (led->max_microamp < IS31FL3196_CURRENT_uA_MIN)
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if (led->max_microamp < is31->cdef->current_min)
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return -EINVAL; /* not supported */
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led->max_microamp = min(led->max_microamp,
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IS31FL3196_CURRENT_uA_MAX);
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is31->cdef->current_max);
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}
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return 0;
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@ -258,7 +338,7 @@ static int is31fl319x_parse_dt(struct device *dev,
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goto put_child_node;
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}
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ret = is31fl319x_parse_child_dt(dev, child, led);
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ret = is31fl319x_parse_child_dt(dev, child, led, is31);
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if (ret) {
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dev_err(dev, "led %u DT parsing failed\n", reg);
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goto put_child_node;
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@ -268,10 +348,12 @@ static int is31fl319x_parse_dt(struct device *dev,
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}
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is31->audio_gain_db = 0;
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ret = of_property_read_u32(np, "audio-gain-db", &is31->audio_gain_db);
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if (!ret)
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is31->audio_gain_db = min(is31->audio_gain_db,
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IS31FL3196_AUDIO_GAIN_DB_MAX);
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if (is31->cdef->is_3196or3199) {
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ret = of_property_read_u32(np, "audio-gain-db", &is31->audio_gain_db);
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if (!ret)
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is31->audio_gain_db = min(is31->audio_gain_db,
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IS31FL3196_AUDIO_GAIN_DB_MAX);
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}
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return 0;
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@ -280,48 +362,6 @@ static int is31fl319x_parse_dt(struct device *dev,
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return ret;
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}
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static bool is31fl319x_readable_reg(struct device *dev, unsigned int reg)
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{ /* we have no readable registers */
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return false;
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}
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static bool is31fl3196_volatile_reg(struct device *dev, unsigned int reg)
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{ /* volatile registers are not cached */
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switch (reg) {
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case IS31FL3196_DATA_UPDATE:
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case IS31FL3196_TIME_UPDATE:
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case IS31FL3196_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 is31fl3196_reg_defaults[] = {
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{ IS31FL3196_CONFIG1, 0x00 },
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{ IS31FL3196_CONFIG2, 0x00 },
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{ IS31FL3196_PWM(0), 0x00 },
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{ IS31FL3196_PWM(1), 0x00 },
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{ IS31FL3196_PWM(2), 0x00 },
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{ IS31FL3196_PWM(3), 0x00 },
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{ IS31FL3196_PWM(4), 0x00 },
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{ IS31FL3196_PWM(5), 0x00 },
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{ IS31FL3196_PWM(6), 0x00 },
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{ IS31FL3196_PWM(7), 0x00 },
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{ IS31FL3196_PWM(8), 0x00 },
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};
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static struct regmap_config is31fl3196_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = IS31FL3196_REG_CNT,
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.cache_type = REGCACHE_FLAT,
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.readable_reg = is31fl319x_readable_reg,
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.volatile_reg = is31fl3196_volatile_reg,
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.reg_defaults = is31fl3196_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(is31fl3196_reg_defaults),
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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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@ -343,7 +383,7 @@ static int is31fl319x_probe(struct i2c_client *client,
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struct device *dev = &client->dev;
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int err;
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int i = 0;
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u32 aggregated_led_microamp = IS31FL3196_CURRENT_uA_MAX;
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u32 aggregated_led_microamp;
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if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
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return -EIO;
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@ -365,7 +405,7 @@ static int is31fl319x_probe(struct i2c_client *client,
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}
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is31->client = client;
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is31->regmap = devm_regmap_init_i2c(client, &is31fl3196_regmap_config);
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is31->regmap = devm_regmap_init_i2c(client, is31->cdef->is31fl319x_regmap_config);
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if (IS_ERR(is31->regmap)) {
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dev_err(&client->dev, "failed to allocate register map\n");
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err = PTR_ERR(is31->regmap);
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@ -375,7 +415,7 @@ static int is31fl319x_probe(struct i2c_client *client,
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i2c_set_clientdata(client, is31);
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/* check for write-reply from chip (we can't read any registers) */
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err = regmap_write(is31->regmap, IS31FL3196_RESET, 0x00);
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err = regmap_write(is31->regmap, is31->cdef->reset_reg, 0x00);
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if (err < 0) {
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dev_err(&client->dev, "no response from chip write: err = %d\n",
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err);
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* But the chip does not allow to limit individual LEDs.
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* So we take minimum from all subnodes for safety of hardware.
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*/
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aggregated_led_microamp = is31->cdef->current_max;
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for (i = 0; i < is31->cdef->num_leds; i++)
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if (is31->leds[i].configured &&
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is31->leds[i].max_microamp < aggregated_led_microamp)
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aggregated_led_microamp = is31->leds[i].max_microamp;
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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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if (is31->cdef->is_3196or3199)
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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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for (i = 0; i < is31->cdef->num_leds; i++) {
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struct is31fl319x_led *led = &is31->leds[i];
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continue;
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led->chip = is31;
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led->cdev.brightness_set_blocking = is31fl3196_brightness_set;
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led->cdev.brightness_set_blocking = is31->cdef->brightness_set;
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err = devm_led_classdev_register(&client->dev, &led->cdev);
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if (err < 0)
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