mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-27 11:19:37 +00:00
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:
Vincent Knecht
Pavel Machek
parent
8e6dde1b44
commit
bd34266fde
1 changed files with 127 additions and 85 deletions
|
|
@ -78,39 +78,59 @@ struct is31fl319x_chip {
|
|||
|
||||
struct is31fl319x_chipdef {
|
||||
int num_leds;
|
||||
u8 reset_reg;
|
||||
const struct regmap_config *is31fl319x_regmap_config;
|
||||
int (*brightness_set)(struct led_classdev *cdev, enum led_brightness brightness);
|
||||
u32 current_default;
|
||||
u32 current_min;
|
||||
u32 current_max;
|
||||
bool is_3196or3199;
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3190_cdef = {
|
||||
.num_leds = 1,
|
||||
static bool is31fl319x_readable_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
/* we have no readable registers */
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool is31fl3196_volatile_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
/* volatile registers are not cached */
|
||||
switch (reg) {
|
||||
case IS31FL3196_DATA_UPDATE:
|
||||
case IS31FL3196_TIME_UPDATE:
|
||||
case IS31FL3196_RESET:
|
||||
return true; /* always write-through */
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
static const struct reg_default is31fl3196_reg_defaults[] = {
|
||||
{ IS31FL3196_CONFIG1, 0x00 },
|
||||
{ IS31FL3196_CONFIG2, 0x00 },
|
||||
{ IS31FL3196_PWM(0), 0x00 },
|
||||
{ IS31FL3196_PWM(1), 0x00 },
|
||||
{ IS31FL3196_PWM(2), 0x00 },
|
||||
{ IS31FL3196_PWM(3), 0x00 },
|
||||
{ IS31FL3196_PWM(4), 0x00 },
|
||||
{ IS31FL3196_PWM(5), 0x00 },
|
||||
{ IS31FL3196_PWM(6), 0x00 },
|
||||
{ IS31FL3196_PWM(7), 0x00 },
|
||||
{ IS31FL3196_PWM(8), 0x00 },
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3193_cdef = {
|
||||
.num_leds = 3,
|
||||
static struct regmap_config is31fl3196_regmap_config = {
|
||||
.reg_bits = 8,
|
||||
.val_bits = 8,
|
||||
.max_register = IS31FL3196_REG_CNT,
|
||||
.cache_type = REGCACHE_FLAT,
|
||||
.readable_reg = is31fl319x_readable_reg,
|
||||
.volatile_reg = is31fl3196_volatile_reg,
|
||||
.reg_defaults = is31fl3196_reg_defaults,
|
||||
.num_reg_defaults = ARRAY_SIZE(is31fl3196_reg_defaults),
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3196_cdef = {
|
||||
.num_leds = 6,
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3199_cdef = {
|
||||
.num_leds = 9,
|
||||
};
|
||||
|
||||
static const struct of_device_id of_is31fl319x_match[] = {
|
||||
{ .compatible = "issi,is31fl3190", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "issi,is31fl3191", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "issi,is31fl3193", .data = &is31fl3193_cdef, },
|
||||
{ .compatible = "issi,is31fl3196", .data = &is31fl3196_cdef, },
|
||||
{ .compatible = "issi,is31fl3199", .data = &is31fl3199_cdef, },
|
||||
{ .compatible = "si-en,sn3190", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "si-en,sn3191", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "si-en,sn3193", .data = &is31fl3193_cdef, },
|
||||
{ .compatible = "si-en,sn3196", .data = &is31fl3196_cdef, },
|
||||
{ .compatible = "si-en,sn3199", .data = &is31fl3199_cdef, },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, of_is31fl319x_match);
|
||||
|
||||
static int is31fl3196_brightness_set(struct led_classdev *cdev,
|
||||
enum led_brightness brightness)
|
||||
{
|
||||
|
|
@ -175,9 +195,69 @@ static int is31fl3196_brightness_set(struct led_classdev *cdev,
|
|||
return ret;
|
||||
}
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3190_cdef = {
|
||||
.num_leds = 1,
|
||||
.reset_reg = IS31FL3196_RESET,
|
||||
.is31fl319x_regmap_config = &is31fl3196_regmap_config,
|
||||
.brightness_set = is31fl3196_brightness_set,
|
||||
.current_default = IS31FL3196_CURRENT_uA_DEFAULT,
|
||||
.current_min = IS31FL3196_CURRENT_uA_MIN,
|
||||
.current_max = IS31FL3196_CURRENT_uA_MAX,
|
||||
.is_3196or3199 = true,
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3193_cdef = {
|
||||
.num_leds = 3,
|
||||
.reset_reg = IS31FL3196_RESET,
|
||||
.is31fl319x_regmap_config = &is31fl3196_regmap_config,
|
||||
.brightness_set = is31fl3196_brightness_set,
|
||||
.current_default = IS31FL3196_CURRENT_uA_DEFAULT,
|
||||
.current_min = IS31FL3196_CURRENT_uA_MIN,
|
||||
.current_max = IS31FL3196_CURRENT_uA_MAX,
|
||||
.is_3196or3199 = true,
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3196_cdef = {
|
||||
.num_leds = 6,
|
||||
.reset_reg = IS31FL3196_RESET,
|
||||
.is31fl319x_regmap_config = &is31fl3196_regmap_config,
|
||||
.brightness_set = is31fl3196_brightness_set,
|
||||
.current_default = IS31FL3196_CURRENT_uA_DEFAULT,
|
||||
.current_min = IS31FL3196_CURRENT_uA_MIN,
|
||||
.current_max = IS31FL3196_CURRENT_uA_MAX,
|
||||
.is_3196or3199 = true,
|
||||
};
|
||||
|
||||
static const struct is31fl319x_chipdef is31fl3199_cdef = {
|
||||
.num_leds = 9,
|
||||
.reset_reg = IS31FL3196_RESET,
|
||||
.is31fl319x_regmap_config = &is31fl3196_regmap_config,
|
||||
.brightness_set = is31fl3196_brightness_set,
|
||||
.current_default = IS31FL3196_CURRENT_uA_DEFAULT,
|
||||
.current_min = IS31FL3196_CURRENT_uA_MIN,
|
||||
.current_max = IS31FL3196_CURRENT_uA_MAX,
|
||||
.is_3196or3199 = true,
|
||||
};
|
||||
|
||||
static const struct of_device_id of_is31fl319x_match[] = {
|
||||
{ .compatible = "issi,is31fl3190", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "issi,is31fl3191", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "issi,is31fl3193", .data = &is31fl3193_cdef, },
|
||||
{ .compatible = "issi,is31fl3196", .data = &is31fl3196_cdef, },
|
||||
{ .compatible = "issi,is31fl3199", .data = &is31fl3199_cdef, },
|
||||
{ .compatible = "si-en,sn3190", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "si-en,sn3191", .data = &is31fl3190_cdef, },
|
||||
{ .compatible = "si-en,sn3193", .data = &is31fl3193_cdef, },
|
||||
{ .compatible = "si-en,sn3196", .data = &is31fl3196_cdef, },
|
||||
{ .compatible = "si-en,sn3199", .data = &is31fl3199_cdef, },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(of, of_is31fl319x_match);
|
||||
|
||||
static int is31fl319x_parse_child_dt(const struct device *dev,
|
||||
const struct device_node *child,
|
||||
struct is31fl319x_led *led)
|
||||
struct is31fl319x_led *led,
|
||||
struct is31fl319x_chip *is31)
|
||||
{
|
||||
struct led_classdev *cdev = &led->cdev;
|
||||
int ret;
|
||||
|
|
@ -190,14 +270,14 @@ static int is31fl319x_parse_child_dt(const struct device *dev,
|
|||
if (ret < 0 && ret != -EINVAL) /* is optional */
|
||||
return ret;
|
||||
|
||||
led->max_microamp = IS31FL3196_CURRENT_uA_DEFAULT;
|
||||
led->max_microamp = is31->cdef->current_default;
|
||||
ret = of_property_read_u32(child, "led-max-microamp",
|
||||
&led->max_microamp);
|
||||
if (!ret) {
|
||||
if (led->max_microamp < IS31FL3196_CURRENT_uA_MIN)
|
||||
if (led->max_microamp < is31->cdef->current_min)
|
||||
return -EINVAL; /* not supported */
|
||||
led->max_microamp = min(led->max_microamp,
|
||||
IS31FL3196_CURRENT_uA_MAX);
|
||||
is31->cdef->current_max);
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
|
@ -258,7 +338,7 @@ static int is31fl319x_parse_dt(struct device *dev,
|
|||
goto put_child_node;
|
||||
}
|
||||
|
||||
ret = is31fl319x_parse_child_dt(dev, child, led);
|
||||
ret = is31fl319x_parse_child_dt(dev, child, led, is31);
|
||||
if (ret) {
|
||||
dev_err(dev, "led %u DT parsing failed\n", reg);
|
||||
goto put_child_node;
|
||||
|
|
@ -268,10 +348,12 @@ static int is31fl319x_parse_dt(struct device *dev,
|
|||
}
|
||||
|
||||
is31->audio_gain_db = 0;
|
||||
ret = of_property_read_u32(np, "audio-gain-db", &is31->audio_gain_db);
|
||||
if (!ret)
|
||||
is31->audio_gain_db = min(is31->audio_gain_db,
|
||||
IS31FL3196_AUDIO_GAIN_DB_MAX);
|
||||
if (is31->cdef->is_3196or3199) {
|
||||
ret = of_property_read_u32(np, "audio-gain-db", &is31->audio_gain_db);
|
||||
if (!ret)
|
||||
is31->audio_gain_db = min(is31->audio_gain_db,
|
||||
IS31FL3196_AUDIO_GAIN_DB_MAX);
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
|
|
@ -280,48 +362,6 @@ static int is31fl319x_parse_dt(struct device *dev,
|
|||
return ret;
|
||||
}
|
||||
|
||||
static bool is31fl319x_readable_reg(struct device *dev, unsigned int reg)
|
||||
{ /* we have no readable registers */
|
||||
return false;
|
||||
}
|
||||
|
||||
static bool is31fl3196_volatile_reg(struct device *dev, unsigned int reg)
|
||||
{ /* volatile registers are not cached */
|
||||
switch (reg) {
|
||||
case IS31FL3196_DATA_UPDATE:
|
||||
case IS31FL3196_TIME_UPDATE:
|
||||
case IS31FL3196_RESET:
|
||||
return true; /* always write-through */
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
static const struct reg_default is31fl3196_reg_defaults[] = {
|
||||
{ IS31FL3196_CONFIG1, 0x00 },
|
||||
{ IS31FL3196_CONFIG2, 0x00 },
|
||||
{ IS31FL3196_PWM(0), 0x00 },
|
||||
{ IS31FL3196_PWM(1), 0x00 },
|
||||
{ IS31FL3196_PWM(2), 0x00 },
|
||||
{ IS31FL3196_PWM(3), 0x00 },
|
||||
{ IS31FL3196_PWM(4), 0x00 },
|
||||
{ IS31FL3196_PWM(5), 0x00 },
|
||||
{ IS31FL3196_PWM(6), 0x00 },
|
||||
{ IS31FL3196_PWM(7), 0x00 },
|
||||
{ IS31FL3196_PWM(8), 0x00 },
|
||||
};
|
||||
|
||||
static struct regmap_config is31fl3196_regmap_config = {
|
||||
.reg_bits = 8,
|
||||
.val_bits = 8,
|
||||
.max_register = IS31FL3196_REG_CNT,
|
||||
.cache_type = REGCACHE_FLAT,
|
||||
.readable_reg = is31fl319x_readable_reg,
|
||||
.volatile_reg = is31fl3196_volatile_reg,
|
||||
.reg_defaults = is31fl3196_reg_defaults,
|
||||
.num_reg_defaults = ARRAY_SIZE(is31fl3196_reg_defaults),
|
||||
};
|
||||
|
||||
static inline int is31fl3196_microamp_to_cs(struct device *dev, u32 microamp)
|
||||
{ /* round down to nearest supported value (range check done by caller) */
|
||||
u32 step = microamp / IS31FL3196_CURRENT_uA_STEP;
|
||||
|
|
@ -343,7 +383,7 @@ static int is31fl319x_probe(struct i2c_client *client,
|
|||
struct device *dev = &client->dev;
|
||||
int err;
|
||||
int i = 0;
|
||||
u32 aggregated_led_microamp = IS31FL3196_CURRENT_uA_MAX;
|
||||
u32 aggregated_led_microamp;
|
||||
|
||||
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
|
||||
return -EIO;
|
||||
|
|
@ -365,7 +405,7 @@ static int is31fl319x_probe(struct i2c_client *client,
|
|||
}
|
||||
|
||||
is31->client = client;
|
||||
is31->regmap = devm_regmap_init_i2c(client, &is31fl3196_regmap_config);
|
||||
is31->regmap = devm_regmap_init_i2c(client, is31->cdef->is31fl319x_regmap_config);
|
||||
if (IS_ERR(is31->regmap)) {
|
||||
dev_err(&client->dev, "failed to allocate register map\n");
|
||||
err = PTR_ERR(is31->regmap);
|
||||
|
|
@ -375,7 +415,7 @@ static int is31fl319x_probe(struct i2c_client *client,
|
|||
i2c_set_clientdata(client, is31);
|
||||
|
||||
/* check for write-reply from chip (we can't read any registers) */
|
||||
err = regmap_write(is31->regmap, IS31FL3196_RESET, 0x00);
|
||||
err = regmap_write(is31->regmap, is31->cdef->reset_reg, 0x00);
|
||||
if (err < 0) {
|
||||
dev_err(&client->dev, "no response from chip write: err = %d\n",
|
||||
err);
|
||||
|
|
@ -388,14 +428,16 @@ static int is31fl319x_probe(struct i2c_client *client,
|
|||
* But the chip does not allow to limit individual LEDs.
|
||||
* So we take minimum from all subnodes for safety of hardware.
|
||||
*/
|
||||
aggregated_led_microamp = is31->cdef->current_max;
|
||||
for (i = 0; i < is31->cdef->num_leds; i++)
|
||||
if (is31->leds[i].configured &&
|
||||
is31->leds[i].max_microamp < aggregated_led_microamp)
|
||||
aggregated_led_microamp = is31->leds[i].max_microamp;
|
||||
|
||||
regmap_write(is31->regmap, IS31FL3196_CONFIG2,
|
||||
is31fl3196_microamp_to_cs(dev, aggregated_led_microamp) |
|
||||
is31fl3196_db_to_gain(is31->audio_gain_db));
|
||||
if (is31->cdef->is_3196or3199)
|
||||
regmap_write(is31->regmap, IS31FL3196_CONFIG2,
|
||||
is31fl3196_microamp_to_cs(dev, aggregated_led_microamp) |
|
||||
is31fl3196_db_to_gain(is31->audio_gain_db));
|
||||
|
||||
for (i = 0; i < is31->cdef->num_leds; i++) {
|
||||
struct is31fl319x_led *led = &is31->leds[i];
|
||||
|
|
@ -404,7 +446,7 @@ static int is31fl319x_probe(struct i2c_client *client,
|
|||
continue;
|
||||
|
||||
led->chip = is31;
|
||||
led->cdev.brightness_set_blocking = is31fl3196_brightness_set;
|
||||
led->cdev.brightness_set_blocking = is31->cdef->brightness_set;
|
||||
|
||||
err = devm_led_classdev_register(&client->dev, &led->cdev);
|
||||
if (err < 0)
|
||||
|
|
|
|||
Loading…
Reference in a new issue