diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-09-05 14:09:21 +0100 |
|---|---|---|
| committer | Richard Purdie <rpurdie@linux.intel.com> | 2009-09-07 14:33:33 +0100 |
| commit | c746b5519a88b8803d43946ad06326ece4829116 (patch) | |
| tree | 886c979ce67fb26f550700261b67ef70ff36c539 /include/linux/mfd | |
| parent | e07cccf4046978df10f2e13fe2b99b2f9b3a65db (diff) | |
leds: Add WM831x status LED driver
The WM831x devices feature two software controlled status LEDs with
hardware assisted blinking.
The device can also autonomously control the LEDs based on a selection
of sources. This can be configured at boot time using either platform
data or the chip OTP. A sysfs file in the style of that for triggers
allowing the control source to be configured at run time. Triggers
can't be used here since they can't depend on the implementation details
of a specific LED type.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Diffstat (limited to 'include/linux/mfd')
| -rw-r--r-- | include/linux/mfd/wm831x/status.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/include/linux/mfd/wm831x/status.h b/include/linux/mfd/wm831x/status.h new file mode 100644 index 00000000000..6bc090d0e3a --- /dev/null +++ b/include/linux/mfd/wm831x/status.h @@ -0,0 +1,34 @@ +/* + * include/linux/mfd/wm831x/status.h -- Status LEDs for WM831x + * + * Copyright 2009 Wolfson Microelectronics PLC. + * + * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#ifndef __MFD_WM831X_STATUS_H__ +#define __MFD_WM831X_STATUS_H__ + +#define WM831X_LED_SRC_MASK 0xC000 /* LED_SRC - [15:14] */ +#define WM831X_LED_SRC_SHIFT 14 /* LED_SRC - [15:14] */ +#define WM831X_LED_SRC_WIDTH 2 /* LED_SRC - [15:14] */ +#define WM831X_LED_MODE_MASK 0x0300 /* LED_MODE - [9:8] */ +#define WM831X_LED_MODE_SHIFT 8 /* LED_MODE - [9:8] */ +#define WM831X_LED_MODE_WIDTH 2 /* LED_MODE - [9:8] */ +#define WM831X_LED_SEQ_LEN_MASK 0x0030 /* LED_SEQ_LEN - [5:4] */ +#define WM831X_LED_SEQ_LEN_SHIFT 4 /* LED_SEQ_LEN - [5:4] */ +#define WM831X_LED_SEQ_LEN_WIDTH 2 /* LED_SEQ_LEN - [5:4] */ +#define WM831X_LED_DUR_MASK 0x000C /* LED_DUR - [3:2] */ +#define WM831X_LED_DUR_SHIFT 2 /* LED_DUR - [3:2] */ +#define WM831X_LED_DUR_WIDTH 2 /* LED_DUR - [3:2] */ +#define WM831X_LED_DUTY_CYC_MASK 0x0003 /* LED_DUTY_CYC - [1:0] */ +#define WM831X_LED_DUTY_CYC_SHIFT 0 /* LED_DUTY_CYC - [1:0] */ +#define WM831X_LED_DUTY_CYC_WIDTH 2 /* LED_DUTY_CYC - [1:0] */ + +#endif |