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/*
* include/media/lm3554.h
*
* Copyright (c) 2010-2012 Intel Corporation. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*
*/
#ifndef _LM3554_H_
#define _LM3554_H_
#include <linux/videodev2.h>
#include <media/v4l2-subdev.h>
#define LM3554_ID 3554
#define v4l2_queryctrl_entry_integer(_id, _name,\
_minimum, _maximum, _step, \
_default_value, _flags) \
{\
.id = (_id), \
.type = V4L2_CTRL_TYPE_INTEGER, \
.name = _name, \
.minimum = (_minimum), \
.maximum = (_maximum), \
.step = (_step), \
.default_value = (_default_value),\
.flags = (_flags),\
}
#define v4l2_queryctrl_entry_boolean(_id, _name,\
_default_value, _flags) \
{\
.id = (_id), \
.type = V4L2_CTRL_TYPE_BOOLEAN, \
.name = _name, \
.minimum = 0, \
.maximum = 1, \
.step = 1, \
.default_value = (_default_value),\
.flags = (_flags),\
}
#define s_ctrl_id_entry_integer(_id, _name, \
_minimum, _maximum, _step, \
_default_value, _flags, \
_s_ctrl, _g_ctrl) \
{\
.qc = v4l2_queryctrl_entry_integer(_id, _name,\
_minimum, _maximum, _step,\
_default_value, _flags), \
.s_ctrl = _s_ctrl, \
.g_ctrl = _g_ctrl, \
}
#define s_ctrl_id_entry_boolean(_id, _name, \
_default_value, _flags, \
_s_ctrl, _g_ctrl) \
{\
.qc = v4l2_queryctrl_entry_boolean(_id, _name,\
_default_value, _flags), \
.s_ctrl = _s_ctrl, \
.g_ctrl = _g_ctrl, \
}
/* Value settings for Flash Time-out Duration*/
#define LM3554_DEFAULT_TIMEOUT 512U
#define LM3554_MIN_TIMEOUT 32U
#define LM3554_MAX_TIMEOUT 1024U
#define LM3554_TIMEOUT_STEPSIZE 32U
/* Flash modes */
#define LM3554_MODE_SHUTDOWN 0
#define LM3554_MODE_INDICATOR 1
#define LM3554_MODE_TORCH 2
#define LM3554_MODE_FLASH 3
/* timer delay time */
#define LM3554_TIMER_DELAY 5
/* Percentage <-> value macros */
#define LM3554_MIN_PERCENT 0U
#define LM3554_MAX_PERCENT 100U
#define LM3554_CLAMP_PERCENTAGE(val) \
clamp(val, LM3554_MIN_PERCENT, LM3554_MAX_PERCENT)
#define LM3554_VALUE_TO_PERCENT(v, step) (((((unsigned long)(v)) * (step)) + 50) / 100)
#define LM3554_PERCENT_TO_VALUE(p, step) (((((unsigned long)(p)) * 100) + (step >> 1)) / (step))
/* Product specific limits
* TODO: get these from platform data */
#define LM3554_FLASH_MAX_LVL 0x0F /* 1191mA */
/* Flash brightness, input is percentage, output is [0..15] */
#define LM3554_FLASH_STEP \
((100ul * (LM3554_MAX_PERCENT) + ((LM3554_FLASH_MAX_LVL) >> 1)) / ((LM3554_FLASH_MAX_LVL)))
#define LM3554_FLASH_DEFAULT_BRIGHTNESS \
LM3554_VALUE_TO_PERCENT(13, LM3554_FLASH_STEP)
/* Torch brightness, input is percentage, output is [0..7] */
#define LM3554_TORCH_STEP 1250
#define LM3554_TORCH_DEFAULT_BRIGHTNESS \
LM3554_VALUE_TO_PERCENT(2, LM3554_TORCH_STEP)
/* Indicator brightness, input is percentage, output is [0..3] */
#define LM3554_INDICATOR_STEP 2500
#define LM3554_INDICATOR_DEFAULT_BRIGHTNESS \
LM3554_VALUE_TO_PERCENT(1, LM3554_INDICATOR_STEP)
/*
* lm3554_platform_data - Flash controller platform data
*/
struct lm3554_platform_data {
int gpio_torch;
int gpio_strobe;
int gpio_reset;
unsigned int current_limit;
unsigned int envm_tx2;
unsigned int tx2_polarity;
};
#endif /* _LM3554_H_ */
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