[media] s5p-jpeg: Add support for Exynos3250 SoC

This patch adds support for jpeg codec on Exynos3250 SoC to
the s5p-jpeg driver. Supported raw formats are: YUYV, YVYU, UYVY,
VYUY, RGB565, RGB565X, RGB32, NV12, NV21. The support includes
also scaling and cropping features.

Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

1 files changed, 515 insertions, 12 deletions

diff --git a/drivers/media/platform/s5p-jpeg/jpeg-core.c b/drivers/media/platform/s5p-jpeg/jpeg-core.c
index 0dcb796ecad9..126199e010c7 100644
--- a/drivers/media/platform/s5p-jpeg/jpeg-core.c
+++ b/drivers/media/platform/s5p-jpeg/jpeg-core.c
@@ -1,6 +1,6 @@
 /* linux/drivers/media/platform/s5p-jpeg/jpeg-core.c
  *
- * Copyright (c) 2011-2013 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2011-2014 Samsung Electronics Co., Ltd.
  *		http://www.samsung.com
  *
  * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
@@ -32,6 +32,7 @@
 #include "jpeg-core.h"
 #include "jpeg-hw-s5p.h"
 #include "jpeg-hw-exynos4.h"
+#include "jpeg-hw-exynos3250.h"
 #include "jpeg-regs.h"
 
 static struct s5p_jpeg_fmt sjpeg_formats[] = {
@@ -41,6 +42,7 @@ static struct s5p_jpeg_fmt sjpeg_formats[] = {
 		.flags		= SJPEG_FMT_FLAG_ENC_CAPTURE |
 				  SJPEG_FMT_FLAG_DEC_OUTPUT |
 				  SJPEG_FMT_FLAG_S5P |
+				  SJPEG_FMT_FLAG_EXYNOS3250 |
 				  SJPEG_FMT_FLAG_EXYNOS4,
 	},
 	{
@@ -70,6 +72,19 @@ static struct s5p_jpeg_fmt sjpeg_formats[] = {
 		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_422,
 	},
 	{
+		.name		= "YUV 4:2:2 packed, YCbYCr",
+		.fourcc		= V4L2_PIX_FMT_YUYV,
+		.depth		= 16,
+		.colplanes	= 1,
+		.h_align	= 2,
+		.v_align	= 0,
+		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
+				  SJPEG_FMT_FLAG_DEC_CAPTURE |
+				  SJPEG_FMT_FLAG_EXYNOS3250 |
+				  SJPEG_FMT_NON_RGB,
+		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_422,
+	},
+	{
 		.name		= "YUV 4:2:2 packed, YCrYCb",
 		.fourcc		= V4L2_PIX_FMT_YVYU,
 		.depth		= 16,
@@ -83,6 +98,45 @@ static struct s5p_jpeg_fmt sjpeg_formats[] = {
 		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_422,
 	},
 	{
+		.name		= "YUV 4:2:2 packed, YCrYCb",
+		.fourcc		= V4L2_PIX_FMT_YVYU,
+		.depth		= 16,
+		.colplanes	= 1,
+		.h_align	= 2,
+		.v_align	= 0,
+		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
+				  SJPEG_FMT_FLAG_DEC_CAPTURE |
+				  SJPEG_FMT_FLAG_EXYNOS3250 |
+				  SJPEG_FMT_NON_RGB,
+		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_422,
+	},
+	{
+		.name		= "YUV 4:2:2 packed, YCrYCb",
+		.fourcc		= V4L2_PIX_FMT_UYVY,
+		.depth		= 16,
+		.colplanes	= 1,
+		.h_align	= 2,
+		.v_align	= 0,
+		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
+				  SJPEG_FMT_FLAG_DEC_CAPTURE |
+				  SJPEG_FMT_FLAG_EXYNOS3250 |
+				  SJPEG_FMT_NON_RGB,
+		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_422,
+	},
+	{
+		.name		= "YUV 4:2:2 packed, YCrYCb",
+		.fourcc		= V4L2_PIX_FMT_VYUY,
+		.depth		= 16,
+		.colplanes	= 1,
+		.h_align	= 2,
+		.v_align	= 0,
+		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
+				  SJPEG_FMT_FLAG_DEC_CAPTURE |
+				  SJPEG_FMT_FLAG_EXYNOS3250 |
+				  SJPEG_FMT_NON_RGB,
+		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_422,
+	},
+	{
 		.name		= "RGB565",
 		.fourcc		= V4L2_PIX_FMT_RGB565,
 		.depth		= 16,
@@ -100,6 +154,32 @@ static struct s5p_jpeg_fmt sjpeg_formats[] = {
 		.fourcc		= V4L2_PIX_FMT_RGB565,
 		.depth		= 16,
 		.colplanes	= 1,
+		.h_align	= 2,
+		.v_align	= 0,
+		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
+				  SJPEG_FMT_FLAG_DEC_CAPTURE |
+				  SJPEG_FMT_FLAG_EXYNOS3250 |
+				  SJPEG_FMT_RGB,
+		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_444,
+	},
+	{
+		.name		= "RGB565X",
+		.fourcc		= V4L2_PIX_FMT_RGB565X,
+		.depth		= 16,
+		.colplanes	= 1,
+		.h_align	= 2,
+		.v_align	= 0,
+		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
+				  SJPEG_FMT_FLAG_DEC_CAPTURE |
+				  SJPEG_FMT_FLAG_EXYNOS3250 |
+				  SJPEG_FMT_RGB,
+		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_444,
+	},
+	{
+		.name		= "RGB565",
+		.fourcc		= V4L2_PIX_FMT_RGB565,
+		.depth		= 16,
+		.colplanes	= 1,
 		.h_align	= 0,
 		.v_align	= 0,
 		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
@@ -121,6 +201,19 @@ static struct s5p_jpeg_fmt sjpeg_formats[] = {
 		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_444,
 	},
 	{
+		.name		= "ARGB8888, 32 bpp",
+		.fourcc		= V4L2_PIX_FMT_RGB32,
+		.depth		= 32,
+		.colplanes	= 1,
+		.h_align	= 2,
+		.v_align	= 0,
+		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
+				  SJPEG_FMT_FLAG_DEC_CAPTURE |
+				  SJPEG_FMT_FLAG_EXYNOS3250 |
+				  SJPEG_FMT_RGB,
+		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_444,
+	},
+	{
 		.name		= "YUV 4:4:4 planar, Y/CbCr",
 		.fourcc		= V4L2_PIX_FMT_NV24,
 		.depth		= 24,
@@ -190,9 +283,23 @@ static struct s5p_jpeg_fmt sjpeg_formats[] = {
 		.fourcc		= V4L2_PIX_FMT_NV12,
 		.depth		= 12,
 		.colplanes	= 2,
+		.h_align	= 3,
+		.v_align	= 3,
+		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
+				  SJPEG_FMT_FLAG_DEC_CAPTURE |
+				  SJPEG_FMT_FLAG_EXYNOS3250 |
+				  SJPEG_FMT_NON_RGB,
+		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_420,
+	},
+	{
+		.name		= "YUV 4:2:0 planar, Y/CbCr",
+		.fourcc		= V4L2_PIX_FMT_NV12,
+		.depth		= 12,
+		.colplanes	= 2,
 		.h_align	= 4,
 		.v_align	= 4,
-		.flags		= SJPEG_FMT_FLAG_DEC_CAPTURE |
+		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
+				  SJPEG_FMT_FLAG_DEC_CAPTURE |
 				  SJPEG_FMT_FLAG_S5P |
 				  SJPEG_FMT_NON_RGB,
 		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_420,
@@ -202,10 +309,24 @@ static struct s5p_jpeg_fmt sjpeg_formats[] = {
 		.fourcc		= V4L2_PIX_FMT_NV21,
 		.depth		= 12,
 		.colplanes	= 2,
+		.h_align	= 3,
+		.v_align	= 3,
+		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
+				  SJPEG_FMT_FLAG_DEC_CAPTURE |
+				  SJPEG_FMT_FLAG_EXYNOS3250 |
+				  SJPEG_FMT_NON_RGB,
+		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_420,
+	},
+	{
+		.name		= "YUV 4:2:0 planar, Y/CrCb",
+		.fourcc		= V4L2_PIX_FMT_NV21,
+		.depth		= 12,
+		.colplanes	= 2,
 		.h_align	= 1,
 		.v_align	= 1,
 		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
 				  SJPEG_FMT_FLAG_DEC_CAPTURE |
+				  SJPEG_FMT_FLAG_EXYNOS3250 |
 				  SJPEG_FMT_FLAG_EXYNOS4 |
 				  SJPEG_FMT_NON_RGB,
 		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_420,
@@ -224,6 +345,19 @@ static struct s5p_jpeg_fmt sjpeg_formats[] = {
 		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_420,
 	},
 	{
+		.name		= "YUV 4:2:0 contiguous 3-planar, Y/Cb/Cr",
+		.fourcc		= V4L2_PIX_FMT_YUV420,
+		.depth		= 12,
+		.colplanes	= 3,
+		.h_align	= 4,
+		.v_align	= 4,
+		.flags		= SJPEG_FMT_FLAG_ENC_OUTPUT |
+				  SJPEG_FMT_FLAG_DEC_CAPTURE |
+				  SJPEG_FMT_FLAG_EXYNOS3250 |
+				  SJPEG_FMT_NON_RGB,
+		.subsampling	= V4L2_JPEG_CHROMA_SUBSAMPLING_420,
+	},
+	{
 		.name		= "Gray",
 		.fourcc		= V4L2_PIX_FMT_GREY,
 		.depth		= 8,
@@ -457,6 +591,16 @@ static int exynos4x12_decoded_subsampling[] = {
 	V4L2_JPEG_CHROMA_SUBSAMPLING_420,
 };
 
+static int exynos3250_decoded_subsampling[] = {
+	V4L2_JPEG_CHROMA_SUBSAMPLING_444,
+	V4L2_JPEG_CHROMA_SUBSAMPLING_422,
+	V4L2_JPEG_CHROMA_SUBSAMPLING_420,
+	V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY,
+	-1,
+	-1,
+	V4L2_JPEG_CHROMA_SUBSAMPLING_411,
+};
+
 static inline struct s5p_jpeg_ctx *ctrl_to_ctx(struct v4l2_ctrl *c)
 {
 	return container_of(c->handler, struct s5p_jpeg_ctx, ctrl_handler);
@@ -471,14 +615,21 @@ static int s5p_jpeg_to_user_subsampling(struct s5p_jpeg_ctx *ctx)
 {
 	WARN_ON(ctx->subsampling > 3);
 
-	if (ctx->jpeg->variant->version == SJPEG_S5P) {
+	switch (ctx->jpeg->variant->version) {
+	case SJPEG_S5P:
 		if (ctx->subsampling > 2)
 			return V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY;
 		return ctx->subsampling;
-	} else {
+	case SJPEG_EXYNOS3250:
+		if (ctx->subsampling > 3)
+			return V4L2_JPEG_CHROMA_SUBSAMPLING_411;
+		return exynos3250_decoded_subsampling[ctx->subsampling];
+	case SJPEG_EXYNOS4:
 		if (ctx->subsampling > 2)
 			return V4L2_JPEG_CHROMA_SUBSAMPLING_420;
 		return exynos4x12_decoded_subsampling[ctx->subsampling];
+	default:
+		return V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY;
 	}
 }
 
@@ -646,6 +797,7 @@ static int s5p_jpeg_open(struct file *file)
 							FMT_TYPE_OUTPUT);
 		cap_fmt = s5p_jpeg_find_format(ctx, V4L2_PIX_FMT_YUYV,
 							FMT_TYPE_CAPTURE);
+		ctx->scale_factor = EXYNOS3250_DEC_SCALE_FACTOR_8_8;
 	}
 
 	ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(jpeg->m2m_dev, ctx, queue_init);
@@ -1229,6 +1381,101 @@ static int s5p_jpeg_s_fmt_vid_out(struct file *file, void *priv,
 	return s5p_jpeg_s_fmt(fh_to_ctx(priv), f);
 }
 
+static int exynos3250_jpeg_try_downscale(struct s5p_jpeg_ctx *ctx,
+				   struct v4l2_rect *r)
+{
+	int w_ratio, h_ratio, scale_factor, cur_ratio, i;
+
+	w_ratio = ctx->out_q.w / r->width;
+	h_ratio = ctx->out_q.h / r->height;
+
+	scale_factor = w_ratio > h_ratio ? w_ratio : h_ratio;
+	scale_factor = clamp_val(scale_factor, 1, 8);
+
+	/* Align scale ratio to the nearest power of 2 */
+	for (i = 0; i <= 3; ++i) {
+		cur_ratio = 1 << i;
+		if (scale_factor <= cur_ratio) {
+			ctx->scale_factor = cur_ratio;
+			break;
+		}
+	}
+
+	r->width = round_down(ctx->out_q.w / ctx->scale_factor, 2);
+	r->height = round_down(ctx->out_q.h / ctx->scale_factor, 2);
+
+	ctx->crop_rect.width = r->width;
+	ctx->crop_rect.height = r->height;
+	ctx->crop_rect.left = 0;
+	ctx->crop_rect.top = 0;
+
+	ctx->crop_altered = true;
+
+	return 0;
+}
+
+/* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */
+static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
+{
+	if (a->left < b->left || a->top < b->top)
+		return 0;
+	if (a->left + a->width > b->left + b->width)
+		return 0;
+	if (a->top + a->height > b->top + b->height)
+		return 0;
+
+	return 1;
+}
+
+static int exynos3250_jpeg_try_crop(struct s5p_jpeg_ctx *ctx,
+				   struct v4l2_rect *r)
+{
+	struct v4l2_rect base_rect;
+	int w_step, h_step;
+
+	switch (ctx->cap_q.fmt->fourcc) {
+	case V4L2_PIX_FMT_NV12:
+	case V4L2_PIX_FMT_NV21:
+		w_step = 1;
+		h_step = 2;
+		break;
+	case V4L2_PIX_FMT_YUV420:
+		w_step = 2;
+		h_step = 2;
+		break;
+	default:
+		w_step = 1;
+		h_step = 1;
+		break;
+	}
+
+	base_rect.top = 0;
+	base_rect.left = 0;
+	base_rect.width = ctx->out_q.w;
+	base_rect.height = ctx->out_q.h;
+
+	r->width = round_down(r->width, w_step);
+	r->height = round_down(r->height, h_step);
+	r->left = round_down(r->left, 2);
+	r->top = round_down(r->top, 2);
+
+	if (!enclosed_rectangle(r, &base_rect))
+		return -EINVAL;
+
+	ctx->crop_rect.left = r->left;
+	ctx->crop_rect.top = r->top;
+	ctx->crop_rect.width = r->width;
+	ctx->crop_rect.height = r->height;
+
+	ctx->crop_altered = true;
+
+	return 0;
+}
+
+/*
+ * V4L2 controls
+ */
+
 static int s5p_jpeg_g_selection(struct file *file, void *priv,
 			 struct v4l2_selection *s)
 {
@@ -1264,6 +1511,30 @@ static int s5p_jpeg_g_selection(struct file *file, void *priv,
 /*
  * V4L2 controls
  */
+static int s5p_jpeg_s_selection(struct file *file, void *fh,
+				  struct v4l2_selection *s)
+{
+	struct s5p_jpeg_ctx *ctx = fh_to_ctx(file->private_data);
+	struct v4l2_rect *rect = &s->r;
+	int ret = -EINVAL;
+
+	if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+		return -EINVAL;
+
+	if (s->target == V4L2_SEL_TGT_COMPOSE) {
+		if (ctx->mode != S5P_JPEG_DECODE)
+			return -EINVAL;
+		if (ctx->jpeg->variant->version == SJPEG_EXYNOS3250)
+			ret = exynos3250_jpeg_try_downscale(ctx, rect);
+	} else if (s->target == V4L2_SEL_TGT_CROP) {
+		if (ctx->mode != S5P_JPEG_ENCODE)
+			return -EINVAL;
+		if (ctx->jpeg->variant->version == SJPEG_EXYNOS3250)
+			ret = exynos3250_jpeg_try_crop(ctx, rect);
+	}
+
+	return ret;
+}
 
 static int s5p_jpeg_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
 {
@@ -1414,6 +1685,7 @@ static const struct v4l2_ioctl_ops s5p_jpeg_ioctl_ops = {
 	.vidioc_streamoff		= v4l2_m2m_ioctl_streamoff,
 
 	.vidioc_g_selection		= s5p_jpeg_g_selection,
+	.vidioc_s_selection		= s5p_jpeg_s_selection,
 };
 
 /*
@@ -1604,6 +1876,135 @@ static void exynos4_jpeg_device_run(void *priv)
 	spin_unlock_irqrestore(&ctx->jpeg->slock, flags);
 }
 
+static void exynos3250_jpeg_set_img_addr(struct s5p_jpeg_ctx *ctx)
+{
+	struct s5p_jpeg *jpeg = ctx->jpeg;
+	struct s5p_jpeg_fmt *fmt;
+	struct vb2_buffer *vb;
+	struct s5p_jpeg_addr jpeg_addr;
+	u32 pix_size;
+
+	pix_size = ctx->cap_q.w * ctx->cap_q.h;
+
+	if (ctx->mode == S5P_JPEG_ENCODE) {
+		vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+		fmt = ctx->out_q.fmt;
+	} else {
+		vb = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+		fmt = ctx->cap_q.fmt;
+	}
+
+	jpeg_addr.y = vb2_dma_contig_plane_dma_addr(vb, 0);
+
+	if (fmt->colplanes == 2) {
+		jpeg_addr.cb = jpeg_addr.y + pix_size;
+	} else if (fmt->colplanes == 3) {
+		jpeg_addr.cb = jpeg_addr.y + pix_size;
+		if (fmt->fourcc == V4L2_PIX_FMT_YUV420)
+			jpeg_addr.cr = jpeg_addr.cb + pix_size / 4;
+		else
+			jpeg_addr.cr = jpeg_addr.cb + pix_size / 2;
+	}
+
+	exynos3250_jpeg_imgadr(jpeg->regs, &jpeg_addr);
+}
+
+static void exynos3250_jpeg_set_jpeg_addr(struct s5p_jpeg_ctx *ctx)
+{
+	struct s5p_jpeg *jpeg = ctx->jpeg;
+	struct vb2_buffer *vb;
+	unsigned int jpeg_addr = 0;
+
+	if (ctx->mode == S5P_JPEG_ENCODE)
+		vb = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+	else
+		vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+
+	jpeg_addr = vb2_dma_contig_plane_dma_addr(vb, 0);
+	exynos3250_jpeg_jpgadr(jpeg->regs, jpeg_addr);
+}
+
+static void exynos3250_jpeg_device_run(void *priv)
+{
+	struct s5p_jpeg_ctx *ctx = priv;
+	struct s5p_jpeg *jpeg = ctx->jpeg;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ctx->jpeg->slock, flags);
+
+	exynos3250_jpeg_reset(jpeg->regs);
+	exynos3250_jpeg_set_dma_num(jpeg->regs);
+	exynos3250_jpeg_poweron(jpeg->regs);
+	exynos3250_jpeg_clk_set(jpeg->regs);
+	exynos3250_jpeg_proc_mode(jpeg->regs, ctx->mode);
+
+	if (ctx->mode == S5P_JPEG_ENCODE) {
+		exynos3250_jpeg_input_raw_fmt(jpeg->regs,
+					      ctx->out_q.fmt->fourcc);
+		exynos3250_jpeg_dri(jpeg->regs, ctx->restart_interval);
+
+		/*
+		 * JPEG IP allows storing 4 quantization tables
+		 * We fill table 0 for luma and table 1 for chroma
+		 */
+		s5p_jpeg_set_qtbl_lum(jpeg->regs, ctx->compr_quality);
+		s5p_jpeg_set_qtbl_chr(jpeg->regs, ctx->compr_quality);
+		/* use table 0 for Y */
+		exynos3250_jpeg_qtbl(jpeg->regs, 1, 0);
+		/* use table 1 for Cb and Cr*/
+		exynos3250_jpeg_qtbl(jpeg->regs, 2, 1);
+		exynos3250_jpeg_qtbl(jpeg->regs, 3, 1);
+
+		/* Y, Cb, Cr use Huffman table 0 */
+		exynos3250_jpeg_htbl_ac(jpeg->regs, 1);
+		exynos3250_jpeg_htbl_dc(jpeg->regs, 1);
+		exynos3250_jpeg_htbl_ac(jpeg->regs, 2);
+		exynos3250_jpeg_htbl_dc(jpeg->regs, 2);
+		exynos3250_jpeg_htbl_ac(jpeg->regs, 3);
+		exynos3250_jpeg_htbl_dc(jpeg->regs, 3);
+
+		exynos3250_jpeg_set_x(jpeg->regs, ctx->crop_rect.width);
+		exynos3250_jpeg_set_y(jpeg->regs, ctx->crop_rect.height);
+		exynos3250_jpeg_stride(jpeg->regs, ctx->out_q.fmt->fourcc,
+								ctx->out_q.w);
+		exynos3250_jpeg_offset(jpeg->regs, ctx->crop_rect.left,
+							ctx->crop_rect.top);
+		exynos3250_jpeg_set_img_addr(ctx);
+		exynos3250_jpeg_set_jpeg_addr(ctx);
+		exynos3250_jpeg_subsampling_mode(jpeg->regs, ctx->subsampling);
+
+		/* ultimately comes from sizeimage from userspace */
+		exynos3250_jpeg_enc_stream_bound(jpeg->regs, ctx->cap_q.size);
+
+		if (ctx->out_q.fmt->fourcc == V4L2_PIX_FMT_RGB565 ||
+		    ctx->out_q.fmt->fourcc == V4L2_PIX_FMT_RGB565X ||
+		    ctx->out_q.fmt->fourcc == V4L2_PIX_FMT_RGB32)
+			exynos3250_jpeg_set_y16(jpeg->regs, true);
+	} else {
+		exynos3250_jpeg_set_img_addr(ctx);
+		exynos3250_jpeg_set_jpeg_addr(ctx);
+		exynos3250_jpeg_stride(jpeg->regs, ctx->cap_q.fmt->fourcc,
+								ctx->cap_q.w);
+		exynos3250_jpeg_offset(jpeg->regs, 0, 0);
+		exynos3250_jpeg_dec_scaling_ratio(jpeg->regs,
+							ctx->scale_factor);
+		exynos3250_jpeg_dec_stream_size(jpeg->regs, ctx->out_q.size);
+		exynos3250_jpeg_output_raw_fmt(jpeg->regs,
+						ctx->cap_q.fmt->fourcc);
+	}
+
+	exynos3250_jpeg_interrupts_enable(jpeg->regs);
+
+	/* JPEG RGB to YCbCr conversion matrix */
+	exynos3250_jpeg_coef(jpeg->regs, ctx->mode);
+
+	exynos3250_jpeg_set_timer(jpeg->regs, EXYNOS3250_IRQ_TIMEOUT);
+	jpeg->irq_status = 0;
+	exynos3250_jpeg_start(jpeg->regs);
+
+	spin_unlock_irqrestore(&ctx->jpeg->slock, flags);
+}
+
 static int s5p_jpeg_job_ready(void *priv)
 {
 	struct s5p_jpeg_ctx *ctx = priv;
@@ -1621,8 +2022,14 @@ static struct v4l2_m2m_ops s5p_jpeg_m2m_ops = {
 	.device_run	= s5p_jpeg_device_run,
 	.job_ready	= s5p_jpeg_job_ready,
 	.job_abort	= s5p_jpeg_job_abort,
-}
-;
+};
+
+static struct v4l2_m2m_ops exynos3250_jpeg_m2m_ops = {
+	.device_run	= exynos3250_jpeg_device_run,
+	.job_ready	= s5p_jpeg_job_ready,
+	.job_abort	= s5p_jpeg_job_abort,
+};
+
 static struct v4l2_m2m_ops exynos4_jpeg_m2m_ops = {
 	.device_run	= exynos4_jpeg_device_run,
 	.job_ready	= s5p_jpeg_job_ready,
@@ -1895,6 +2302,70 @@ static irqreturn_t exynos4_jpeg_irq(int irq, void *priv)
 	return IRQ_HANDLED;
 }
 
+static irqreturn_t exynos3250_jpeg_irq(int irq, void *dev_id)
+{
+	struct s5p_jpeg *jpeg = dev_id;
+	struct s5p_jpeg_ctx *curr_ctx;
+	struct vb2_buffer *src_buf, *dst_buf;
+	unsigned long payload_size = 0;
+	enum vb2_buffer_state state = VB2_BUF_STATE_DONE;
+	bool interrupt_timeout = false;
+	u32 irq_status;
+
+	spin_lock(&jpeg->slock);
+
+	irq_status = exynos3250_jpeg_get_timer_status(jpeg->regs);
+	if (irq_status & EXYNOS3250_TIMER_INT_STAT) {
+		exynos3250_jpeg_clear_timer_status(jpeg->regs);
+		interrupt_timeout = true;
+		dev_err(jpeg->dev, "Interrupt timeout occurred.\n");
+	}
+
+	irq_status = exynos3250_jpeg_get_int_status(jpeg->regs);
+	exynos3250_jpeg_clear_int_status(jpeg->regs, irq_status);
+
+	jpeg->irq_status |= irq_status;
+
+	curr_ctx = v4l2_m2m_get_curr_priv(jpeg->m2m_dev);
+
+	if (!curr_ctx)
+		goto exit_unlock;
+
+	if ((irq_status & EXYNOS3250_HEADER_STAT) &&
+	    (curr_ctx->mode == S5P_JPEG_DECODE)) {
+		exynos3250_jpeg_rstart(jpeg->regs);
+		goto exit_unlock;
+	}
+
+	if (jpeg->irq_status & (EXYNOS3250_JPEG_DONE |
+				EXYNOS3250_WDMA_DONE |
+				EXYNOS3250_RDMA_DONE |
+				EXYNOS3250_RESULT_STAT))
+		payload_size = exynos3250_jpeg_compressed_size(jpeg->regs);
+	else if (interrupt_timeout)
+		state = VB2_BUF_STATE_ERROR;
+	else
+		goto exit_unlock;
+
+	src_buf = v4l2_m2m_src_buf_remove(curr_ctx->fh.m2m_ctx);
+	dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->fh.m2m_ctx);
+
+	dst_buf->v4l2_buf.timecode = src_buf->v4l2_buf.timecode;
+	dst_buf->v4l2_buf.timestamp = src_buf->v4l2_buf.timestamp;
+
+	v4l2_m2m_buf_done(src_buf, state);
+	if (curr_ctx->mode == S5P_JPEG_ENCODE)
+		vb2_set_plane_payload(dst_buf, 0, payload_size);
+	v4l2_m2m_buf_done(dst_buf, state);
+	v4l2_m2m_job_finish(jpeg->m2m_dev, curr_ctx->fh.m2m_ctx);
+
+	curr_ctx->subsampling =
+			exynos3250_jpeg_get_subsampling_mode(jpeg->regs);
+exit_unlock:
+	spin_unlock(&jpeg->slock);
+	return IRQ_HANDLED;
+}
+
 static void *jpeg_get_drv_data(struct device *dev);
 
 /*
@@ -1950,6 +2421,10 @@ static int s5p_jpeg_probe(struct platform_device *pdev)
 	}
 	dev_dbg(&pdev->dev, "clock source %p\n", jpeg->clk);
 
+	jpeg->sclk = clk_get(&pdev->dev, "sclk");
+	if (IS_ERR(jpeg->sclk))
+		dev_info(&pdev->dev, "sclk clock not available\n");
+
 	/* v4l2 device */
 	ret = v4l2_device_register(&pdev->dev, &jpeg->v4l2_dev);
 	if (ret) {
@@ -2057,6 +2532,8 @@ device_register_rollback:
 
 clk_get_rollback:
 	clk_put(jpeg->clk);
+	if (!IS_ERR(jpeg->sclk))
+		clk_put(jpeg->sclk);
 
 	return ret;
 }
@@ -2075,10 +2552,15 @@ static int s5p_jpeg_remove(struct platform_device *pdev)
 	v4l2_m2m_release(jpeg->m2m_dev);
 	v4l2_device_unregister(&jpeg->v4l2_dev);
 
-	if (!pm_runtime_status_suspended(&pdev->dev))
+	if (!pm_runtime_status_suspended(&pdev->dev)) {
 		clk_disable_unprepare(jpeg->clk);
+		if (!IS_ERR(jpeg->sclk))
+			clk_disable_unprepare(jpeg->sclk);
+	}
 
 	clk_put(jpeg->clk);
+	if (!IS_ERR(jpeg->sclk))
+		clk_put(jpeg->sclk);
 
 	return 0;
 }
@@ -2088,6 +2570,8 @@ static int s5p_jpeg_runtime_suspend(struct device *dev)
 	struct s5p_jpeg *jpeg = dev_get_drvdata(dev);
 
 	clk_disable_unprepare(jpeg->clk);
+	if (!IS_ERR(jpeg->sclk))
+		clk_disable_unprepare(jpeg->sclk);
 
 	return 0;
 }
@@ -2102,15 +2586,24 @@ static int s5p_jpeg_runtime_resume(struct device *dev)
 	if (ret < 0)
 		return ret;
 
+	if (!IS_ERR(jpeg->sclk)) {
+		ret = clk_prepare_enable(jpeg->sclk);
+		if (ret < 0)
+			return ret;
+	}
+
 	spin_lock_irqsave(&jpeg->slock, flags);
 
 	/*
-	 * JPEG IP allows storing two Huffman tables for each component
+	 * JPEG IP allows storing two Huffman tables for each component.
 	 * We fill table 0 for each component and do this here only
-	 * for S5PC210 device as Exynos4x12 requires programming its
-	 * Huffman tables each time the encoding process is initialized.
+	 * for S5PC210 and Exynos3250 SoCs. Exynos4x12 SoC requires
+	 * programming its Huffman tables each time the encoding process
+	 * is initialized, and thus it is accomplished in the device_run
+	 * callback of m2m_ops.
 	 */
-	if (jpeg->variant->version == SJPEG_S5P) {
+	if (jpeg->variant->version == SJPEG_S5P ||
+	    jpeg->variant->version == SJPEG_EXYNOS3250) {
 		s5p_jpeg_set_hdctbl(jpeg->regs);
 		s5p_jpeg_set_hdctblg(jpeg->regs);
 		s5p_jpeg_set_hactbl(jpeg->regs);
@@ -2150,6 +2643,13 @@ static struct s5p_jpeg_variant s5p_jpeg_drvdata = {
 	.fmt_ver_flag	= SJPEG_FMT_FLAG_S5P,
 };
 
+static struct s5p_jpeg_variant exynos3250_jpeg_drvdata = {
+	.version	= SJPEG_EXYNOS3250,
+	.jpeg_irq	= exynos3250_jpeg_irq,
+	.m2m_ops	= &exynos3250_jpeg_m2m_ops,
+	.fmt_ver_flag	= SJPEG_FMT_FLAG_EXYNOS3250,
+};
+
 static struct s5p_jpeg_variant exynos4_jpeg_drvdata = {
 	.version	= SJPEG_EXYNOS4,
 	.jpeg_irq	= exynos4_jpeg_irq,
@@ -2162,8 +2662,11 @@ static const struct of_device_id samsung_jpeg_match[] = {
 		.compatible = "samsung,s5pv210-jpeg",
 		.data = &s5p_jpeg_drvdata,
 	}, {
+		.compatible = "samsung,exynos3250-jpeg",
+		.data = &exynos3250_jpeg_drvdata,
+	}, {
 		.compatible = "samsung,exynos4210-jpeg",
-		.data = &s5p_jpeg_drvdata,
+		.data = &exynos4_jpeg_drvdata,
 	}, {
 		.compatible = "samsung,exynos4212-jpeg",
 		.data = &exynos4_jpeg_drvdata,