backlight: lp855x_bl: support new LP8555 device
LP8555 is one of the LP855x family devices.
This device needs pre_init_device() and post_init_device() driver
structure. It's same as LP8557, so the device configuration code is
shared with LP8557. Backlight outputs are generated from dual DC-DC boost
converters. It's configurable EPROM settings which are defined in the
platform data.
Driver documentation and device tree bindings are updated.
Signed-off-by: Milo Kim <milo.kim@ti.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/platform_data/lp855x.h b/include/linux/platform_data/lp855x.h
index ea32005..1b2ba24 100644
--- a/include/linux/platform_data/lp855x.h
+++ b/include/linux/platform_data/lp855x.h
@@ -40,6 +40,17 @@
#define LP8553_PWM_CONFIG LP8550_PWM_CONFIG
#define LP8553_I2C_CONFIG LP8550_I2C_CONFIG
+/* CONFIG register - LP8555 */
+#define LP8555_PWM_STANDBY BIT(7)
+#define LP8555_PWM_FILTER BIT(6)
+#define LP8555_RELOAD_EPROM BIT(3) /* use it if EPROMs should be reset
+ when the backlight turns on */
+#define LP8555_OFF_OPENLEDS BIT(2)
+#define LP8555_PWM_CONFIG LP8555_PWM_ONLY
+#define LP8555_I2C_CONFIG LP8555_I2C_ONLY
+#define LP8555_COMB1_CONFIG LP8555_COMBINED1
+#define LP8555_COMB2_CONFIG LP8555_COMBINED2
+
/* DEVICE CONTROL register - LP8556 */
#define LP8556_PWM_CONFIG (LP8556_PWM_ONLY << BRT_MODE_SHFT)
#define LP8556_COMB1_CONFIG (LP8556_COMBINED1 << BRT_MODE_SHFT)
@@ -65,6 +76,7 @@
LP8551,
LP8552,
LP8553,
+ LP8555,
LP8556,
LP8557,
};
@@ -89,6 +101,13 @@
LP8553_I2C_ONLY = LP8550_I2C_ONLY,
};
+enum lp8555_brightness_source {
+ LP8555_PWM_ONLY,
+ LP8555_I2C_ONLY,
+ LP8555_COMBINED1, /* Brightness register with shaped PWM */
+ LP8555_COMBINED2, /* PWM with shaped brightness register */
+};
+
enum lp8556_brightness_source {
LP8556_PWM_ONLY,
LP8556_COMBINED1, /* pwm + i2c before the shaper block */