diff options
Diffstat (limited to 'drivers/staging/media/atomisp/include/media/lm3642.h')
| -rw-r--r-- | drivers/staging/media/atomisp/include/media/lm3642.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/drivers/staging/media/atomisp/include/media/lm3642.h b/drivers/staging/media/atomisp/include/media/lm3642.h new file mode 100644 index 0000000..545d957 --- /dev/null +++ b/drivers/staging/media/atomisp/include/media/lm3642.h @@ -0,0 +1,153 @@ +/* + * include/media/lm3642.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. + * + * You should have received a copy of the GNU General Public License + * along with this program. + */ + +#ifndef _LM3642_H_ +#define _LM3642_H_ + +#include <linux/videodev2.h> +#include <media/v4l2-subdev.h> + +#define LM3642_NAME "lm3642" +#define LM3642_ID 3642 + +#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, \ + } + + +/* Default Values */ +#define LM3642_DEFAULT_TIMEOUT 300U +#define LM3642_DEFAULT_RAMP_TIME 0x10 /* 1.024ms */ +#define LM3642_DEFAULT_INDICATOR_CURRENT 0x01 /* 1.88A */ +#define LM3642_DEFAULT_FLASH_CURRENT 0x0f /* 1500mA */ + +/* Value settings for Flash Time-out Duration*/ +#define LM3642_MIN_TIMEOUT 100U +#define LM3642_MAX_TIMEOUT 800U +#define LM3642_TIMEOUT_STEPSIZE 100U + +/* Flash modes */ +#define LM3642_MODE_SHUTDOWN 0 +#define LM3642_MODE_INDICATOR 1 +#define LM3642_MODE_TORCH 2 +#define LM3642_MODE_FLASH 3 + +/* timer delay time */ +#define LM3642_TIMER_DELAY 5 + +/* Percentage <-> value macros */ +#define LM3642_MIN_PERCENT 0U +#define LM3642_MAX_PERCENT 100U +#define LM3642_CLAMP_PERCENTAGE(val) \ + clamp(val, LM3642_MIN_PERCENT, LM3642_MAX_PERCENT) + +#define LM3642_VALUE_TO_PERCENT(v, step) \ + (((((unsigned long)((v)+1))*(step))+50)/100) +#define LM3642_PERCENT_TO_VALUE(p, step) \ + (((((unsigned long)(p))*100)+((step)>>1))/(step)-1) + +/* Product specific limits + * TODO: get these from platform data */ +#define LM3642_FLASH_MAX_LVL 0x0F /* 1500mA */ +#define LM3642_TORCH_MAX_LVL 0x07 /* 187mA */ +#define LM3642_INDICATOR_MAX_LVL 0x01 /* 1.88A */ + +/* Flash brightness, input is percentage, output is [0..15] */ +#define LM3642_FLASH_STEP \ + ((100ul*(LM3642_MAX_PERCENT) \ + +((LM3642_FLASH_MAX_LVL+1)>>1)) \ + /((LM3642_FLASH_MAX_LVL+1))) +#define LM3642_FLASH_DEFAULT_BRIGHTNESS \ + LM3642_VALUE_TO_PERCENT(15, LM3642_FLASH_STEP) + +/* Torch brightness, input is percentage, output is [0..7] */ +#define LM3642_TORCH_STEP \ + ((100ul*(LM3642_MAX_PERCENT) \ + +((LM3642_TORCH_MAX_LVL+1)>>1)) \ + /((LM3642_TORCH_MAX_LVL+1))) +#define LM3642_TORCH_DEFAULT_BRIGHTNESS \ + LM3642_VALUE_TO_PERCENT(0, LM3642_TORCH_STEP) + +/* Indicator brightness, input is percentage, output is [0..1] */ +#define LM3642_INDICATOR_STEP \ + ((100ul*(LM3642_MAX_PERCENT) \ + +((LM3642_INDICATOR_MAX_LVL+1)>>1)) \ + /((LM3642_INDICATOR_MAX_LVL+1))) +#define LM3642_INDICATOR_DEFAULT_BRIGHTNESS \ + LM3642_VALUE_TO_PERCENT(1, LM3642_INDICATOR_STEP) + +/* + * lm3642_platform_data - Flash controller platform data + */ +struct lm3642_platform_data { + int gpio_torch; + int gpio_strobe; + int (*power_ctrl)(struct v4l2_subdev *subdev, int on); + + unsigned int torch_en; + unsigned int flash_en; + unsigned int tx_en; + unsigned int ivfm_en; +}; + +#endif /* _LM3642_H_ */ + |
