leds: Add new LED driver for lm355x chips

This driver is a general version for LM355x,lm3554 and lm3556,led chips of TI.

LM3554 :
The LM3554 is a 2 MHz fixed-frequency synchronous boost
converter with 1.2A dual high side led drivers.
Datasheet: www.ti.com/lit/ds/symlink/lm3554.pdf

LM3556 :
The LM3556 is a 4 MHz fixed-frequency synchronous boost
converter plus 1.5A constant current driver for a high-current white LED.
Datasheet: www.national.com/ds/LM/LM3556.pdf

(bryan.wu@canonical.com: use flush_work() to replace flush_work_sync() which is
deprecated)

Signed-off-by: G.Shark Jeong <gshark.jeong@gmail.com>
Signed-off-by: Bryan Wu <bryan.wu@canonical.com>

1 files changed, 66 insertions, 0 deletions

diff --git a/include/linux/platform_data/leds-lm355x.h b/include/linux/platform_data/leds-lm355x.h
new file mode 100644
index 000000000000..b88724bb0b46
--- /dev/null
+++ b/include/linux/platform_data/leds-lm355x.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2012 Texas Instruments
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * Simple driver for Texas Instruments LM355x LED driver chip
+ *
+ * Author: G.Shark Jeong <gshark.jeong@gmail.com>
+ *         Daniel Jeong <daniel.jeong@ti.com>
+ */
+
+#define LM355x_NAME "leds-lm355x"
+#define LM3554_NAME "leds-lm3554"
+#define LM3556_NAME "leds-lm3556"
+
+/* lm3554 : strobe def. on */
+enum lm355x_strobe {
+        LM355x_PIN_STROBE_DISABLE = 0x00,
+        LM355x_PIN_STROBE_ENABLE = 0x01,
+};
+
+enum lm355x_torch {
+        LM355x_PIN_TORCH_DISABLE = 0,
+        LM3554_PIN_TORCH_ENABLE = 0x80,
+        LM3556_PIN_TORCH_ENABLE = 0x10,
+};
+
+enum lm355x_tx2 {
+        LM355x_PIN_TX_DISABLE = 0,
+        LM3554_PIN_TX_ENABLE = 0x20,
+        LM3556_PIN_TX_ENABLE = 0x40,
+};
+
+enum lm355x_ntc {
+        LM355x_PIN_NTC_DISABLE = 0,
+        LM3554_PIN_NTC_ENABLE = 0x08,
+        LM3556_PIN_NTC_ENABLE = 0x80,
+};
+
+enum lm355x_pmode {
+        LM355x_PMODE_DISABLE = 0,
+        LM355x_PMODE_ENABLE = 0x04,
+};
+
+/*
+ * struct lm3554_platform_data
+ * @pin_strobe: strobe input
+ * @pin_torch : input pin
+ *              lm3554-tx1/torch/gpio1
+ *              lm3556-torch
+ * @pin_tx2   : input pin
+ *              lm3554-envm/tx2/gpio2
+ *              lm3556-tx pin
+ * @ntc_pin  : output pin
+ *              lm3554-ledi/ntc
+ *              lm3556-temp pin
+ * @pass_mode : pass mode
+ */
+struct lm355x_platform_data {
+        enum lm355x_strobe pin_strobe;
+        enum lm355x_torch pin_tx1;
+        enum lm355x_tx2 pin_tx2;
+        enum lm355x_ntc ntc_pin;
+
+        enum lm355x_pmode pass_mode;
+};