linux/drivers/media/i2c/m5mols/m5mols_capture.c
Mauro Carvalho Chehab d647f0b70c [media] include/media: move driver interface headers to a separate dir
Let's not mix headers used by the core with those headers that
are needed by some driver-specific interface header.

The headers used on drivers were manually moved using:
    mkdir include/media/drv-intf/
    git mv include/media/cx2341x.h include/media/cx25840.h \
	include/media/exynos-fimc.h include/media/msp3400.h \
	include/media/s3c_camif.h include/media/saa7146.h \
	include/media/saa7146_vv.h  include/media/sh_mobile_ceu.h \
	include/media/sh_mobile_csi2.h include/media/sh_vou.h \
	include/media/si476x.h include/media/soc_mediabus.h \
	include/media/tea575x.h include/media/drv-intf/

And the references for those headers were corrected using:

    MAIN_DIR="media/"
    PREV_DIR="media/"
    DIRS="drv-intf/"

    echo "Checking affected files" >&2
    for i in $DIRS; do
	for j in $(find include/$MAIN_DIR/$i -type f -name '*.h'); do
		 n=`basename $j`
		git grep -l $n
	done
    done|sort|uniq >files && (
	echo "Handling files..." >&2;
	echo "for i in \$(cat files|grep -v Documentation); do cat \$i | \\";
	(
		cd include/$MAIN_DIR;
		for j in $DIRS; do
			for i in $(ls $j); do
				echo "perl -ne 's,(include [\\\"\\<])$PREV_DIR($i)([\\\"\\>]),\1$MAIN_DIR$j\2\3,; print \$_' |\\";
			done;
		done;
		echo "cat > a && mv a \$i; done";
	);
	echo "Handling documentation..." >&2;
	echo "for i in MAINTAINERS \$(cat files); do cat \$i | \\";
	(
		cd include/$MAIN_DIR;
		for j in $DIRS; do
			for i in $(ls $j); do
				echo "  perl -ne 's,include/$PREV_DIR($i)\b,include/$MAIN_DIR$j\1,; print \$_' |\\";
			done;
		done;
		echo "cat > a && mv a \$i; done"
	);
    ) >script && . ./script

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
2015-11-17 06:57:29 -02:00

159 lines
4.3 KiB
C

/*
* The Capture code for Fujitsu M-5MOLS ISP
*
* Copyright (C) 2011 Samsung Electronics Co., Ltd.
* Author: HeungJun Kim <riverful.kim@samsung.com>
*
* Copyright (C) 2009 Samsung Electronics Co., Ltd.
* Author: Dongsoo Nathaniel Kim <dongsoo45.kim@samsung.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.
*/
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/regulator/consumer.h>
#include <linux/videodev2.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-subdev.h>
#include <media/i2c/m5mols.h>
#include <media/drv-intf/exynos-fimc.h>
#include "m5mols.h"
#include "m5mols_reg.h"
/**
* m5mols_read_rational - I2C read of a rational number
*
* Read numerator and denominator from registers @addr_num and @addr_den
* respectively and return the division result in @val.
*/
static int m5mols_read_rational(struct v4l2_subdev *sd, u32 addr_num,
u32 addr_den, u32 *val)
{
u32 num, den;
int ret = m5mols_read_u32(sd, addr_num, &num);
if (!ret)
ret = m5mols_read_u32(sd, addr_den, &den);
if (ret)
return ret;
*val = den == 0 ? 0 : num / den;
return ret;
}
/**
* m5mols_capture_info - Gather captured image information
*
* For now it gathers only EXIF information and file size.
*/
static int m5mols_capture_info(struct m5mols_info *info)
{
struct m5mols_exif *exif = &info->cap.exif;
struct v4l2_subdev *sd = &info->sd;
int ret;
ret = m5mols_read_rational(sd, EXIF_INFO_EXPTIME_NU,
EXIF_INFO_EXPTIME_DE, &exif->exposure_time);
if (ret)
return ret;
ret = m5mols_read_rational(sd, EXIF_INFO_TV_NU, EXIF_INFO_TV_DE,
&exif->shutter_speed);
if (ret)
return ret;
ret = m5mols_read_rational(sd, EXIF_INFO_AV_NU, EXIF_INFO_AV_DE,
&exif->aperture);
if (ret)
return ret;
ret = m5mols_read_rational(sd, EXIF_INFO_BV_NU, EXIF_INFO_BV_DE,
&exif->brightness);
if (ret)
return ret;
ret = m5mols_read_rational(sd, EXIF_INFO_EBV_NU, EXIF_INFO_EBV_DE,
&exif->exposure_bias);
if (ret)
return ret;
ret = m5mols_read_u16(sd, EXIF_INFO_ISO, &exif->iso_speed);
if (!ret)
ret = m5mols_read_u16(sd, EXIF_INFO_FLASH, &exif->flash);
if (!ret)
ret = m5mols_read_u16(sd, EXIF_INFO_SDR, &exif->sdr);
if (!ret)
ret = m5mols_read_u16(sd, EXIF_INFO_QVAL, &exif->qval);
if (ret)
return ret;
if (!ret)
ret = m5mols_read_u32(sd, CAPC_IMAGE_SIZE, &info->cap.main);
if (!ret)
ret = m5mols_read_u32(sd, CAPC_THUMB_SIZE, &info->cap.thumb);
if (!ret)
info->cap.total = info->cap.main + info->cap.thumb;
return ret;
}
int m5mols_start_capture(struct m5mols_info *info)
{
unsigned int framesize = info->cap.buf_size - M5MOLS_JPEG_TAGS_SIZE;
struct v4l2_subdev *sd = &info->sd;
int ret;
/*
* Synchronize the controls, set the capture frame resolution and color
* format. The frame capture is initiated during switching from Monitor
* to Capture mode.
*/
ret = m5mols_set_mode(info, REG_MONITOR);
if (!ret)
ret = m5mols_restore_controls(info);
if (!ret)
ret = m5mols_write(sd, CAPP_YUVOUT_MAIN, REG_JPEG);
if (!ret)
ret = m5mols_write(sd, CAPP_MAIN_IMAGE_SIZE, info->resolution);
if (!ret)
ret = m5mols_write(sd, CAPP_JPEG_SIZE_MAX, framesize);
if (!ret)
ret = m5mols_set_mode(info, REG_CAPTURE);
if (!ret)
/* Wait until a frame is captured to ISP internal memory */
ret = m5mols_wait_interrupt(sd, REG_INT_CAPTURE, 2000);
if (ret)
return ret;
/*
* Initiate the captured data transfer to a MIPI-CSI receiver.
*/
ret = m5mols_write(sd, CAPC_SEL_FRAME, 1);
if (!ret)
ret = m5mols_write(sd, CAPC_START, REG_CAP_START_MAIN);
if (!ret) {
bool captured = false;
unsigned int size;
/* Wait for the capture completion interrupt */
ret = m5mols_wait_interrupt(sd, REG_INT_CAPTURE, 2000);
if (!ret) {
captured = true;
ret = m5mols_capture_info(info);
}
size = captured ? info->cap.main : 0;
v4l2_dbg(1, m5mols_debug, sd, "%s: size: %d, thumb.: %d B\n",
__func__, size, info->cap.thumb);
v4l2_subdev_notify(sd, S5P_FIMC_TX_END_NOTIFY, &size);
}
return ret;
}