/*
* s3c24xx/s3c64xx SoC series Camera Interface (CAMIF) driver
*
* Copyright (C) 2012 Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
* Copyright (C) 2012 Tomasz Figa <tomasz.figa@gmail.com>
*
* Based on drivers/media/platform/s5p-fimc,
* Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd.
*
* 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.
*/
#define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
#include <linux/bug.h>
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/ratelimit.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/videodev2.h>
#include <media/media-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-dma-contig.h>
#include "camif-core.h"
#include "camif-regs.h"
static int debug;
module_param(debug, int, 0644);
/* Locking: called with vp->camif->slock spinlock held */
static void camif_cfg_video_path(struct camif_vp *vp)
{
WARN_ON(s3c_camif_get_scaler_config(vp, &vp->scaler));
camif_hw_set_scaler(vp);
camif_hw_set_flip(vp);
camif_hw_set_target_format(vp);
camif_hw_set_output_dma(vp);
}
static void camif_prepare_dma_offset(struct camif_vp *vp)
{
struct camif_frame *f = &vp->out_frame;
f->dma_offset.initial = f->rect.top * f->f_width + f->rect.left;
f->dma_offset.line = f->f_width - (f->rect.left + f->rect.width);
pr_debug("dma_offset: initial: %d, line: %d\n",
f->dma_offset.initial, f->dma_offset.line);
}
/* Locking: called with camif->slock spinlock held */
static int s3c_camif_hw_init(struct camif_dev *camif, struct camif_vp *vp)
{
const struct s3c_camif_variant *variant = camif->variant;
if (camif->sensor.sd == NULL || vp->out_fmt == NULL)
return -EINVAL;
if (var
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