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-rw-r--r--drivers/video/backlight/Kconfig35
-rw-r--r--drivers/video/backlight/lm3630a_bl.c153
-rw-r--r--drivers/video/fbdev/Kconfig5
3 files changed, 160 insertions, 33 deletions
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 71ee978c848f..3ed1d9084f94 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -2,13 +2,7 @@
# Backlight & LCD drivers configuration
#
-menuconfig BACKLIGHT_LCD_SUPPORT
- bool "Backlight & LCD device support"
- help
- Enable this to be able to choose the drivers for controlling the
- backlight and the LCD panel on some platforms, for example on PDAs.
-
-if BACKLIGHT_LCD_SUPPORT
+menu "Backlight & LCD device support"
#
# LCD
@@ -199,7 +193,6 @@ config BACKLIGHT_IPAQ_MICRO
config BACKLIGHT_LM3533
tristate "Backlight Driver for LM3533"
- depends on BACKLIGHT_CLASS_DEVICE
depends on MFD_LM3533
help
Say Y to enable the backlight driver for National Semiconductor / TI
@@ -323,7 +316,7 @@ config BACKLIGHT_ADP5520
config BACKLIGHT_ADP8860
tristate "Backlight Driver for ADP8860/ADP8861/ADP8863 using WLED"
- depends on BACKLIGHT_CLASS_DEVICE && I2C
+ depends on I2C
select NEW_LEDS
select LEDS_CLASS
help
@@ -335,7 +328,7 @@ config BACKLIGHT_ADP8860
config BACKLIGHT_ADP8870
tristate "Backlight Driver for ADP8870 using WLED"
- depends on BACKLIGHT_CLASS_DEVICE && I2C
+ depends on I2C
select NEW_LEDS
select LEDS_CLASS
help
@@ -353,28 +346,28 @@ config BACKLIGHT_88PM860X
config BACKLIGHT_PCF50633
tristate "Backlight driver for NXP PCF50633 MFD"
- depends on BACKLIGHT_CLASS_DEVICE && MFD_PCF50633
+ depends on MFD_PCF50633
help
If you have a backlight driven by a NXP PCF50633 MFD, say Y here to
enable its driver.
config BACKLIGHT_AAT2870
tristate "AnalogicTech AAT2870 Backlight"
- depends on BACKLIGHT_CLASS_DEVICE && MFD_AAT2870_CORE
+ depends on MFD_AAT2870_CORE
help
If you have a AnalogicTech AAT2870 say Y to enable the
backlight driver.
config BACKLIGHT_LM3630A
tristate "Backlight Driver for LM3630A"
- depends on BACKLIGHT_CLASS_DEVICE && I2C && PWM
+ depends on I2C && PWM
select REGMAP_I2C
help
This supports TI LM3630A Backlight Driver
config BACKLIGHT_LM3639
tristate "Backlight Driver for LM3639"
- depends on BACKLIGHT_CLASS_DEVICE && I2C
+ depends on I2C
select REGMAP_I2C
select NEW_LEDS
select LEDS_CLASS
@@ -383,20 +376,20 @@ config BACKLIGHT_LM3639
config BACKLIGHT_LP855X
tristate "Backlight driver for TI LP855X"
- depends on BACKLIGHT_CLASS_DEVICE && I2C && PWM
+ depends on I2C && PWM
help
This supports TI LP8550, LP8551, LP8552, LP8553, LP8555, LP8556 and
LP8557 backlight driver.
config BACKLIGHT_LP8788
tristate "Backlight driver for TI LP8788 MFD"
- depends on BACKLIGHT_CLASS_DEVICE && MFD_LP8788 && PWM
+ depends on MFD_LP8788 && PWM
help
This supports TI LP8788 backlight driver.
config BACKLIGHT_OT200
tristate "Backlight driver for ot200 visualisation device"
- depends on BACKLIGHT_CLASS_DEVICE && CS5535_MFGPT && GPIO_CS5535
+ depends on CS5535_MFGPT && GPIO_CS5535
help
To compile this driver as a module, choose M here: the module will be
called ot200_bl.
@@ -410,7 +403,7 @@ config BACKLIGHT_PANDORA
config BACKLIGHT_SKY81452
tristate "Backlight driver for SKY81452"
- depends on BACKLIGHT_CLASS_DEVICE && MFD_SKY81452
+ depends on MFD_SKY81452
help
If you have a Skyworks SKY81452, say Y to enable the
backlight driver.
@@ -420,14 +413,14 @@ config BACKLIGHT_SKY81452
config BACKLIGHT_TPS65217
tristate "TPS65217 Backlight"
- depends on BACKLIGHT_CLASS_DEVICE && MFD_TPS65217
+ depends on MFD_TPS65217
help
If you have a Texas Instruments TPS65217 say Y to enable the
backlight driver.
config BACKLIGHT_AS3711
tristate "AS3711 Backlight"
- depends on BACKLIGHT_CLASS_DEVICE && MFD_AS3711
+ depends on MFD_AS3711
help
If you have an Austrian Microsystems AS3711 say Y to enable the
backlight driver.
@@ -466,4 +459,4 @@ config BACKLIGHT_RAVE_SP
endif # BACKLIGHT_CLASS_DEVICE
-endif # BACKLIGHT_LCD_SUPPORT
+endmenu
diff --git a/drivers/video/backlight/lm3630a_bl.c b/drivers/video/backlight/lm3630a_bl.c
index 2030a6b77a09..75d996490cf0 100644
--- a/drivers/video/backlight/lm3630a_bl.c
+++ b/drivers/video/backlight/lm3630a_bl.c
@@ -35,6 +35,14 @@
#define REG_MAX 0x50
#define INT_DEBOUNCE_MSEC 10
+
+#define LM3630A_BANK_0 0
+#define LM3630A_BANK_1 1
+
+#define LM3630A_NUM_SINKS 2
+#define LM3630A_SINK_0 0
+#define LM3630A_SINK_1 1
+
struct lm3630a_chip {
struct device *dev;
struct delayed_work work;
@@ -201,7 +209,7 @@ static int lm3630a_bank_a_update_status(struct backlight_device *bl)
LM3630A_LEDA_ENABLE, LM3630A_LEDA_ENABLE);
if (ret < 0)
goto out_i2c_err;
- return bl->props.brightness;
+ return 0;
out_i2c_err:
dev_err(pchip->dev, "i2c failed to access\n");
@@ -278,7 +286,7 @@ static int lm3630a_bank_b_update_status(struct backlight_device *bl)
LM3630A_LEDB_ENABLE, LM3630A_LEDB_ENABLE);
if (ret < 0)
goto out_i2c_err;
- return bl->props.brightness;
+ return 0;
out_i2c_err:
dev_err(pchip->dev, "i2c failed to access REG_CTRL\n");
@@ -329,15 +337,17 @@ static const struct backlight_ops lm3630a_bank_b_ops = {
static int lm3630a_backlight_register(struct lm3630a_chip *pchip)
{
- struct backlight_properties props;
struct lm3630a_platform_data *pdata = pchip->pdata;
+ struct backlight_properties props;
+ const char *label;
props.type = BACKLIGHT_RAW;
if (pdata->leda_ctrl != LM3630A_LEDA_DISABLE) {
props.brightness = pdata->leda_init_brt;
props.max_brightness = pdata->leda_max_brt;
+ label = pdata->leda_label ? pdata->leda_label : "lm3630a_leda";
pchip->bleda =
- devm_backlight_device_register(pchip->dev, "lm3630a_leda",
+ devm_backlight_device_register(pchip->dev, label,
pchip->dev, pchip,
&lm3630a_bank_a_ops, &props);
if (IS_ERR(pchip->bleda))
@@ -348,8 +358,9 @@ static int lm3630a_backlight_register(struct lm3630a_chip *pchip)
(pdata->ledb_ctrl != LM3630A_LEDB_ON_A)) {
props.brightness = pdata->ledb_init_brt;
props.max_brightness = pdata->ledb_max_brt;
+ label = pdata->ledb_label ? pdata->ledb_label : "lm3630a_ledb";
pchip->bledb =
- devm_backlight_device_register(pchip->dev, "lm3630a_ledb",
+ devm_backlight_device_register(pchip->dev, label,
pchip->dev, pchip,
&lm3630a_bank_b_ops, &props);
if (IS_ERR(pchip->bledb))
@@ -364,6 +375,123 @@ static const struct regmap_config lm3630a_regmap = {
.max_register = REG_MAX,
};
+static int lm3630a_parse_led_sources(struct fwnode_handle *node,
+ int default_led_sources)
+{
+ u32 sources[LM3630A_NUM_SINKS];
+ int ret, num_sources, i;
+
+ num_sources = fwnode_property_read_u32_array(node, "led-sources", NULL,
+ 0);
+ if (num_sources < 0)
+ return default_led_sources;
+ else if (num_sources > ARRAY_SIZE(sources))
+ return -EINVAL;
+
+ ret = fwnode_property_read_u32_array(node, "led-sources", sources,
+ num_sources);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < num_sources; i++) {
+ if (sources[i] < LM3630A_SINK_0 || sources[i] > LM3630A_SINK_1)
+ return -EINVAL;
+
+ ret |= BIT(sources[i]);
+ }
+
+ return ret;
+}
+
+static int lm3630a_parse_bank(struct lm3630a_platform_data *pdata,
+ struct fwnode_handle *node, int *seen_led_sources)
+{
+ int led_sources, ret;
+ const char *label;
+ u32 bank, val;
+ bool linear;
+
+ ret = fwnode_property_read_u32(node, "reg", &bank);
+ if (ret)
+ return ret;
+
+ if (bank < LM3630A_BANK_0 || bank > LM3630A_BANK_1)
+ return -EINVAL;
+
+ led_sources = lm3630a_parse_led_sources(node, BIT(bank));
+ if (led_sources < 0)
+ return led_sources;
+
+ if (*seen_led_sources & led_sources)
+ return -EINVAL;
+
+ *seen_led_sources |= led_sources;
+
+ linear = fwnode_property_read_bool(node,
+ "ti,linear-mapping-mode");
+ if (bank) {
+ if (led_sources & BIT(LM3630A_SINK_0) ||
+ !(led_sources & BIT(LM3630A_SINK_1)))
+ return -EINVAL;
+
+ pdata->ledb_ctrl = linear ?
+ LM3630A_LEDB_ENABLE_LINEAR :
+ LM3630A_LEDB_ENABLE;
+ } else {
+ if (!(led_sources & BIT(LM3630A_SINK_0)))
+ return -EINVAL;
+
+ pdata->leda_ctrl = linear ?
+ LM3630A_LEDA_ENABLE_LINEAR :
+ LM3630A_LEDA_ENABLE;
+
+ if (led_sources & BIT(LM3630A_SINK_1))
+ pdata->ledb_ctrl = LM3630A_LEDB_ON_A;
+ }
+
+ ret = fwnode_property_read_string(node, "label", &label);
+ if (!ret) {
+ if (bank)
+ pdata->ledb_label = label;
+ else
+ pdata->leda_label = label;
+ }
+
+ ret = fwnode_property_read_u32(node, "default-brightness",
+ &val);
+ if (!ret) {
+ if (bank)
+ pdata->ledb_init_brt = val;
+ else
+ pdata->leda_init_brt = val;
+ }
+
+ ret = fwnode_property_read_u32(node, "max-brightness", &val);
+ if (!ret) {
+ if (bank)
+ pdata->ledb_max_brt = val;
+ else
+ pdata->leda_max_brt = val;
+ }
+
+ return 0;
+}
+
+static int lm3630a_parse_node(struct lm3630a_chip *pchip,
+ struct lm3630a_platform_data *pdata)
+{
+ int ret = -ENODEV, seen_led_sources = 0;
+ struct fwnode_handle *node;
+
+ device_for_each_child_node(pchip->dev, node) {
+ ret = lm3630a_parse_bank(pdata, node, &seen_led_sources);
+ if (ret)
+ return ret;
+ }
+
+ return ret;
+}
+
static int lm3630a_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -396,13 +524,18 @@ static int lm3630a_probe(struct i2c_client *client,
GFP_KERNEL);
if (pdata == NULL)
return -ENOMEM;
+
/* default values */
- pdata->leda_ctrl = LM3630A_LEDA_ENABLE;
- pdata->ledb_ctrl = LM3630A_LEDB_ENABLE;
pdata->leda_max_brt = LM3630A_MAX_BRIGHTNESS;
pdata->ledb_max_brt = LM3630A_MAX_BRIGHTNESS;
pdata->leda_init_brt = LM3630A_MAX_BRIGHTNESS;
pdata->ledb_init_brt = LM3630A_MAX_BRIGHTNESS;
+
+ rval = lm3630a_parse_node(pchip, pdata);
+ if (rval) {
+ dev_err(&client->dev, "fail : parse node\n");
+ return rval;
+ }
}
pchip->pdata = pdata;
@@ -470,11 +603,17 @@ static const struct i2c_device_id lm3630a_id[] = {
{}
};
+static const struct of_device_id lm3630a_match_table[] = {
+ { .compatible = "ti,lm3630a", },
+ { },
+};
+
MODULE_DEVICE_TABLE(i2c, lm3630a_id);
static struct i2c_driver lm3630a_i2c_driver = {
.driver = {
.name = LM3630A_NAME,
+ .of_match_table = lm3630a_match_table,
},
.probe = lm3630a_probe,
.remove = lm3630a_remove,
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 47ecf9ad4d51..bf6b77b964f1 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -186,7 +186,6 @@ config FB_MACMODES
config FB_BACKLIGHT
tristate
depends on FB
- select BACKLIGHT_LCD_SUPPORT
select BACKLIGHT_CLASS_DEVICE
config FB_MODE_HELPERS
@@ -281,7 +280,6 @@ config FB_ARMCLCD
select FB_CFB_IMAGEBLIT
select FB_MODE_HELPERS if OF
select VIDEOMODE_HELPERS if OF
- select BACKLIGHT_LCD_SUPPORT if OF
select BACKLIGHT_CLASS_DEVICE if OF
help
This framebuffer device driver is for the ARM PrimeCell PL110
@@ -307,7 +305,6 @@ config FB_ACORN
config FB_CLPS711X
tristate "CLPS711X LCD support"
depends on FB && (ARCH_CLPS711X || COMPILE_TEST)
- select BACKLIGHT_LCD_SUPPORT
select FB_MODE_HELPERS
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
@@ -335,7 +332,6 @@ config FB_SA1100
config FB_IMX
tristate "Freescale i.MX1/21/25/27 LCD support"
depends on FB && ARCH_MXC
- select BACKLIGHT_LCD_SUPPORT
select LCD_CLASS_DEVICE
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
@@ -2184,7 +2180,6 @@ config FB_MX3
tristate "MX3 Framebuffer support"
depends on FB && MX3_IPU
select BACKLIGHT_CLASS_DEVICE
- select BACKLIGHT_LCD_SUPPORT
select FB_CFB_FILLRECT
select FB_CFB_COPYAREA
select FB_CFB_IMAGEBLIT