[media] adp1653: Add driver for LED flash controller
This patch adds the driver for the adp1653 LED flash controller. This controller supports a high power led in flash and torch modes and an indicator light, sometimes also called privacy light. The adp1653 is used on the Nokia N900. Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by: Tuukka Toivonen <tuukkat76@gmail.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: David Cohen <dacohen@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Sakari Ailus
committed by
Mauro Carvalho Chehab
Mauro Carvalho Chehab
vanhempi
7ba85fa4fd
commit
13abadad17
126
include/media/adp1653.h
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126
include/media/adp1653.h
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/*
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* include/media/adp1653.h
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*
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* Copyright (C) 2008--2011 Nokia Corporation
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*
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* Contact: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
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*
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* Contributors:
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* Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
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* Tuukka Toivonen <tuukkat76@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#ifndef ADP1653_H
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#define ADP1653_H
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#include <linux/i2c.h>
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#include <linux/mutex.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-subdev.h>
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#define ADP1653_NAME "adp1653"
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#define ADP1653_I2C_ADDR (0x60 >> 1)
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/* Register definitions */
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#define ADP1653_REG_OUT_SEL 0x00
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#define ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN 0x01
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#define ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX 0x0b
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#define ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN 0x0c
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#define ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX 0x1f
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#define ADP1653_REG_OUT_SEL_HPLED_SHIFT 3
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#define ADP1653_REG_OUT_SEL_ILED_MAX 0x07
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#define ADP1653_REG_OUT_SEL_ILED_SHIFT 0
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#define ADP1653_REG_CONFIG 0x01
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#define ADP1653_REG_CONFIG_TMR_CFG (1 << 4)
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#define ADP1653_REG_CONFIG_TMR_SET_MAX 0x0f
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#define ADP1653_REG_CONFIG_TMR_SET_SHIFT 0
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#define ADP1653_REG_SW_STROBE 0x02
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#define ADP1653_REG_SW_STROBE_SW_STROBE (1 << 0)
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#define ADP1653_REG_FAULT 0x03
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#define ADP1653_REG_FAULT_FLT_SCP (1 << 3)
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#define ADP1653_REG_FAULT_FLT_OT (1 << 2)
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#define ADP1653_REG_FAULT_FLT_TMR (1 << 1)
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#define ADP1653_REG_FAULT_FLT_OV (1 << 0)
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#define ADP1653_INDICATOR_INTENSITY_MIN 0
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#define ADP1653_INDICATOR_INTENSITY_STEP 2500
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#define ADP1653_INDICATOR_INTENSITY_MAX \
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(ADP1653_REG_OUT_SEL_ILED_MAX * ADP1653_INDICATOR_INTENSITY_STEP)
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#define ADP1653_INDICATOR_INTENSITY_uA_TO_REG(a) \
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((a) / ADP1653_INDICATOR_INTENSITY_STEP)
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#define ADP1653_INDICATOR_INTENSITY_REG_TO_uA(a) \
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((a) * ADP1653_INDICATOR_INTENSITY_STEP)
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#define ADP1653_FLASH_INTENSITY_BASE 35
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#define ADP1653_FLASH_INTENSITY_STEP 15
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#define ADP1653_FLASH_INTENSITY_MIN \
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(ADP1653_FLASH_INTENSITY_BASE \
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+ ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN * ADP1653_FLASH_INTENSITY_STEP)
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#define ADP1653_FLASH_INTENSITY_MAX \
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(ADP1653_FLASH_INTENSITY_MIN + \
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(ADP1653_REG_OUT_SEL_HPLED_FLASH_MAX - \
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ADP1653_REG_OUT_SEL_HPLED_FLASH_MIN + 1) * \
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ADP1653_FLASH_INTENSITY_STEP)
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#define ADP1653_FLASH_INTENSITY_mA_TO_REG(a) \
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((a) < ADP1653_FLASH_INTENSITY_BASE ? 0 : \
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(((a) - ADP1653_FLASH_INTENSITY_BASE) / ADP1653_FLASH_INTENSITY_STEP))
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#define ADP1653_FLASH_INTENSITY_REG_TO_mA(a) \
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((a) * ADP1653_FLASH_INTENSITY_STEP + ADP1653_FLASH_INTENSITY_BASE)
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#define ADP1653_TORCH_INTENSITY_MIN \
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(ADP1653_FLASH_INTENSITY_BASE \
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+ ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN * ADP1653_FLASH_INTENSITY_STEP)
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#define ADP1653_TORCH_INTENSITY_MAX \
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(ADP1653_TORCH_INTENSITY_MIN + \
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(ADP1653_REG_OUT_SEL_HPLED_TORCH_MAX - \
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ADP1653_REG_OUT_SEL_HPLED_TORCH_MIN + 1) * \
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ADP1653_FLASH_INTENSITY_STEP)
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struct adp1653_platform_data {
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int (*power)(struct v4l2_subdev *sd, int on);
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u32 max_flash_timeout; /* flash light timeout in us */
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u32 max_flash_intensity; /* led intensity, flash mode */
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u32 max_torch_intensity; /* led intensity, torch mode */
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u32 max_indicator_intensity; /* indicator led intensity */
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};
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#define to_adp1653_flash(sd) container_of(sd, struct adp1653_flash, subdev)
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struct adp1653_flash {
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struct v4l2_subdev subdev;
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struct adp1653_platform_data *platform_data;
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struct v4l2_ctrl_handler ctrls;
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struct v4l2_ctrl *led_mode;
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struct v4l2_ctrl *flash_timeout;
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struct v4l2_ctrl *flash_intensity;
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struct v4l2_ctrl *torch_intensity;
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struct v4l2_ctrl *indicator_intensity;
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struct mutex power_lock;
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int power_count;
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int fault;
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};
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#endif /* ADP1653_H */
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