1/*
  2 * include/media/adp1653.h
  3 *
  4 * Copyright (C) 2008--2011 Nokia Corporation
  5 *
  6 * Contact: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
  7 *
  8 * Contributors:
  9 *	Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
 10 *	Tuukka Toivonen <tuukkat76@gmail.com>
 11 *
 12 * This program is free software; you can redistribute it and/or
 13 * modify it under the terms of the GNU General Public License
 14 * version 2 as published by the Free Software Foundation.
 15 *
 16 * This program is distributed in the hope that it will be useful, but
 17 * WITHOUT ANY WARRANTY; without even the implied warranty of
 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 19 * General Public License for more details.
 20 *
 21 * You should have received a copy of the GNU General Public License
 22 * along with this program; if not, write to the Free Software
 23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 24 * 02110-1301 USA
 25 *
 26 */
 27
 28#ifndef ADP1653_H
 29#define ADP1653_H
 30
 31#include <linux/i2c.h>
 32#include <linux/mutex.h>
 33#include <linux/videodev2.h>
 34#include <media/v4l2-ctrls.h>
 35#include <media/v4l2-subdev.h>
 36
 37#define ADP1653_NAME				"adp1653"
 38#define ADP1653_I2C_ADDR			(0x60 >> 1)
 39
 40/* Register definitions */
 41#define ADP1653_REG_OUT_SEL			0x00
 42#define ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN	0x01
 43#define ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX	0x0b
 44#define ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN	0x0c
 45#define ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX	0x1f
 46#define ADP1653_REG_OUT_SEL_HPLED_SHIFT		3
 47#define ADP1653_REG_OUT_SEL_ILED_MAX		0x07
 48#define ADP1653_REG_OUT_SEL_ILED_SHIFT		0
 49
 50#define ADP1653_REG_CONFIG			0x01
 51#define ADP1653_REG_CONFIG_TMR_CFG		(1 << 4)
 52#define ADP1653_REG_CONFIG_TMR_SET_MAX		0x0f
 53#define ADP1653_REG_CONFIG_TMR_SET_SHIFT	0
 54
 55#define ADP1653_REG_SW_STROBE			0x02
 56#define ADP1653_REG_SW_STROBE_SW_STROBE		(1 << 0)
 57
 58#define ADP1653_REG_FAULT			0x03
 59#define ADP1653_REG_FAULT_FLT_SCP		(1 << 3)
 60#define ADP1653_REG_FAULT_FLT_OT		(1 << 2)
 61#define ADP1653_REG_FAULT_FLT_TMR		(1 << 1)
 62#define ADP1653_REG_FAULT_FLT_OV		(1 << 0)
 63
 64#define ADP1653_INDICATOR_INTENSITY_MIN		0
 65#define ADP1653_INDICATOR_INTENSITY_STEP	2500
 66#define ADP1653_INDICATOR_INTENSITY_MAX		\
 67	(ADP1653_REG_OUT_SEL_ILED_MAX * ADP1653_INDICATOR_INTENSITY_STEP)
 68#define ADP1653_INDICATOR_INTENSITY_uA_TO_REG(a) \
 69	((a) / ADP1653_INDICATOR_INTENSITY_STEP)
 70#define ADP1653_INDICATOR_INTENSITY_REG_TO_uA(a) \
 71	((a) * ADP1653_INDICATOR_INTENSITY_STEP)
 72
 73#define ADP1653_FLASH_INTENSITY_BASE		35
 74#define ADP1653_FLASH_INTENSITY_STEP		15
 75#define ADP1653_FLASH_INTENSITY_MIN					\
 76	(ADP1653_FLASH_INTENSITY_BASE					\
 77	 + ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN * ADP1653_FLASH_INTENSITY_STEP)
 78#define ADP1653_FLASH_INTENSITY_MAX			\
 79	(ADP1653_FLASH_INTENSITY_MIN +			\
 80	 (ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX -		\
 81	  ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN + 1) *	\
 82	 ADP1653_FLASH_INTENSITY_STEP)
 83
 84#define ADP1653_FLASH_INTENSITY_mA_TO_REG(a)				\
 85	((a) < ADP1653_FLASH_INTENSITY_BASE ? 0 :			\
 86	 (((a) - ADP1653_FLASH_INTENSITY_BASE) / ADP1653_FLASH_INTENSITY_STEP))
 87#define ADP1653_FLASH_INTENSITY_REG_TO_mA(a)		\
 88	((a) * ADP1653_FLASH_INTENSITY_STEP + ADP1653_FLASH_INTENSITY_BASE)
 89
 90#define ADP1653_TORCH_INTENSITY_MIN					\
 91	(ADP1653_FLASH_INTENSITY_BASE					\
 92	 + ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN * ADP1653_FLASH_INTENSITY_STEP)
 93#define ADP1653_TORCH_INTENSITY_MAX			\
 94	(ADP1653_TORCH_INTENSITY_MIN +			\
 95	 (ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX -		\
 96	  ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN + 1) *	\
 97	 ADP1653_FLASH_INTENSITY_STEP)
 98
 99struct adp1653_platform_data {
100	int (*power)(struct v4l2_subdev *sd, int on);
101
102	u32 max_flash_timeout;		/* flash light timeout in us */
103	u32 max_flash_intensity;	/* led intensity, flash mode */
104	u32 max_torch_intensity;	/* led intensity, torch mode */
105	u32 max_indicator_intensity;	/* indicator led intensity */
106};
107
108#define to_adp1653_flash(sd)	container_of(sd, struct adp1653_flash, subdev)
109
110struct adp1653_flash {
111	struct v4l2_subdev subdev;
112	struct adp1653_platform_data *platform_data;
113
114	struct v4l2_ctrl_handler ctrls;
115	struct v4l2_ctrl *led_mode;
116	struct v4l2_ctrl *flash_timeout;
117	struct v4l2_ctrl *flash_intensity;
118	struct v4l2_ctrl *torch_intensity;
119	struct v4l2_ctrl *indicator_intensity;
120
121	struct mutex power_lock;
122	int power_count;
123	int fault;
124};
125
126#endif /* ADP1653_H */