================================================================================
Patch summary:
Andrzej Pietrasiewicz (1):
ARM: EXYNOS4: JPEG: driver initial release
drivers/media/video/Kconfig | 8 +
drivers/media/video/Makefile | 1 +
drivers/media/video/s5p-jpeg/Makefile | 2 +
drivers/media/video/s5p-jpeg/jpeg-core.c | 1501 ++++++++++++++++++++++++++++++
drivers/media/video/s5p-jpeg/jpeg-core.h | 145 +++
drivers/media/video/s5p-jpeg/jpeg-hw.h | 357 +++++++
drivers/media/video/s5p-jpeg/jpeg-regs.h | 181 ++++
7 files changed, 2195 insertions(+), 0 deletions(-)
create mode 100644 drivers/media/video/s5p-jpeg/Makefile
create mode 100644 drivers/media/video/s5p-jpeg/jpeg-core.c
create mode 100644 drivers/media/video/s5p-jpeg/jpeg-core.h
create mode 100644 drivers/media/video/s5p-jpeg/jpeg-hw.h
create mode 100644 drivers/media/video/s5p-jpeg/jpeg-regs.h
@@ -1098,6 +1098,14 @@ config VIDEO_SAMSUNG_S5P_G2D
This is a v4l2 driver for Samsung S5P and EXYNOS4 G2D
2d graphics accelerator.
+config VIDEO_SAMSUNG_S5P_JPEG
+ tristate "Samsung S5P JPEG codec driver"
+ depends on VIDEO_DEV && VIDEO_V4L2 && PLAT_S5P
+ select VIDEOBUF2_DMA_CONTIG
+ select V4L2_MEM2MEM_DEV
+ ---help---
+ This is a v4l2 driver for Samsung S5P and EXYNOS4 JPEG codec
+
config VIDEO_SAMSUNG_S5P_MFC
tristate "Samsung S5P MFC 5.1 Video Codec"
depends on VIDEO_DEV && VIDEO_V4L2 && PLAT_S5P
@@ -174,6 +174,7 @@ obj-$(CONFIG_VIDEO_OMAP1) += omap1_camera.o
obj-$(CONFIG_VIDEO_ATMEL_ISI) += atmel-isi.o
obj-$(CONFIG_VIDEO_SAMSUNG_S5P_FIMC) += s5p-fimc/
+obj-$(CONFIG_VIDEO_SAMSUNG_S5P_JPEG) += s5p-jpeg/
obj-$(CONFIG_VIDEO_SAMSUNG_S5P_MFC) += s5p-mfc/
obj-$(CONFIG_VIDEO_SAMSUNG_S5P_TV) += s5p-tv/
new file mode 100644
@@ -0,0 +1,2 @@
+s5p-jpeg-objs := jpeg-core.o
+obj-$(CONFIG_VIDEO_SAMSUNG_S5P_JPEG) := s5p-jpeg.o
new file mode 100644
@@ -0,0 +1,1501 @@
+/* linux/drivers/media/video/s5p-jpeg/jpeg-core.c
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *
+ * 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.
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/gfp.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "jpeg-core.h"
+#include "jpeg-hw.h"
+
+static struct s5p_jpeg_fmt formats_enc[] = {
+ {
+ .name = "YUV 4:2:0, YCbCr",
+ .fourcc = V4L2_PIX_FMT_YUV420,
+ .depth = 12,
+ .types = MEM2MEM_CAPTURE,
+ },
+ {
+ .name = "YUV 4:2:2, YCbYCr",
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .depth = 16,
+ .types = MEM2MEM_CAPTURE | MEM2MEM_OUTPUT,
+ },
+ {
+ .name = "RGB565",
+ .fourcc = V4L2_PIX_FMT_RGB565X,
+ .depth = 16,
+ .types = MEM2MEM_OUTPUT,
+ },
+};
+#define NUM_FORMATS_ENC ARRAY_SIZE(formats_enc)
+
+static struct s5p_jpeg_fmt formats_dec[] = {
+ {
+ .name = "YUV 4:2:0, YCbCr",
+ .fourcc = V4L2_PIX_FMT_YUV420,
+ .depth = 12,
+ .h_align = 4,
+ .v_align = 4,
+ .types = MEM2MEM_CAPTURE,
+ },
+ {
+ .name = "YUV 4:2:2, YCbYCr",
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .depth = 16,
+ .h_align = 4,
+ .v_align = 3,
+ .types = MEM2MEM_CAPTURE,
+ },
+ {
+ .name = "JPEG JFIF",
+ .fourcc = V4L2_PIX_FMT_JPEG,
+ .types = MEM2MEM_OUTPUT,
+ },
+};
+#define NUM_FORMATS_DEC ARRAY_SIZE(formats_dec)
+
+static const unsigned char qtbl_luminance[4][64] = {
+ {/* level 1 - high quality */
+ 8, 6, 6, 8, 12, 14, 16, 17,
+ 6, 6, 6, 8, 10, 13, 12, 15,
+ 6, 6, 7, 8, 13, 14, 18, 24,
+ 8, 8, 8, 14, 13, 19, 24, 35,
+ 12, 10, 13, 13, 20, 26, 34, 39,
+ 14, 13, 14, 19, 26, 34, 39, 39,
+ 16, 12, 18, 24, 34, 39, 39, 39,
+ 17, 15, 24, 35, 39, 39, 39, 39
+ },
+ {/* level 2 */
+ 12, 8, 8, 12, 17, 21, 24, 23,
+ 8, 9, 9, 11, 15, 19, 18, 23,
+ 8, 9, 10, 12, 19, 20, 27, 36,
+ 12, 11, 12, 21, 20, 28, 36, 53,
+ 17, 15, 19, 20, 30, 39, 51, 59,
+ 21, 19, 20, 28, 39, 51, 59, 59,
+ 24, 18, 27, 36, 51, 59, 59, 59,
+ 23, 23, 36, 53, 59, 59, 59, 59
+ },
+ {/* level 3 */
+ 16, 11, 11, 16, 23, 27, 31, 30,
+ 11, 12, 12, 15, 20, 23, 23, 30,
+ 11, 12, 13, 16, 23, 26, 35, 47,
+ 16, 15, 16, 23, 26, 37, 47, 64,
+ 23, 20, 23, 26, 39, 51, 64, 64,
+ 27, 23, 26, 37, 51, 64, 64, 64,
+ 31, 23, 35, 47, 64, 64, 64, 64,
+ 30, 30, 47, 64, 64, 64, 64, 64
+ },
+ {/*level 4 - low quality */
+ 20, 16, 25, 39, 50, 46, 62, 68,
+ 16, 18, 23, 38, 38, 53, 65, 68,
+ 25, 23, 31, 38, 53, 65, 68, 68,
+ 39, 38, 38, 53, 65, 68, 68, 68,
+ 50, 38, 53, 65, 68, 68, 68, 68,
+ 46, 53, 65, 68, 68, 68, 68, 68,
+ 62, 65, 68, 68, 68, 68, 68, 68,
+ 68, 68, 68, 68, 68, 68, 68, 68
+ }
+};
+
+static const unsigned char qtbl_chrominance[4][64] = {
+ {/* level 1 - high quality */
+ 9, 8, 9, 11, 14, 17, 19, 24,
+ 8, 10, 9, 11, 14, 13, 17, 22,
+ 9, 9, 13, 14, 13, 15, 23, 26,
+ 11, 11, 14, 14, 15, 20, 26, 33,
+ 14, 14, 13, 15, 20, 24, 33, 39,
+ 17, 13, 15, 20, 24, 32, 39, 39,
+ 19, 17, 23, 26, 33, 39, 39, 39,
+ 24, 22, 26, 33, 39, 39, 39, 39
+ },
+ {/* level 2 */
+ 13, 11, 13, 16, 20, 20, 29, 37,
+ 11, 14, 14, 14, 16, 20, 26, 32,
+ 13, 14, 15, 17, 20, 23, 35, 40,
+ 16, 14, 17, 21, 23, 30, 40, 50,
+ 20, 16, 20, 23, 30, 37, 50, 59,
+ 20, 20, 23, 30, 37, 48, 59, 59,
+ 29, 26, 35, 40, 50, 59, 59, 59,
+ 37, 32, 40, 50, 59, 59, 59, 59
+ },
+ {/* level 3 */
+ 17, 15, 17, 21, 20, 26, 38, 48,
+ 15, 19, 18, 17, 20, 26, 35, 43,
+ 17, 18, 20, 22, 26, 30, 46, 53,
+ 21, 17, 22, 28, 30, 39, 53, 64,
+ 20, 20, 26, 30, 39, 48, 64, 64,
+ 26, 26, 30, 39, 48, 63, 64, 64,
+ 38, 35, 46, 53, 64, 64, 64, 64,
+ 48, 43, 53, 64, 64, 64, 64, 64
+ },
+ {/*level 4 - low quality */
+ 21, 25, 32, 38, 54, 68, 68, 68,
+ 25, 28, 24, 38, 54, 68, 68, 68,
+ 32, 24, 32, 43, 66, 68, 68, 68,
+ 38, 38, 43, 53, 68, 68, 68, 68,
+ 54, 54, 66, 68, 68, 68, 68, 68,
+ 68, 68, 68, 68, 68, 68, 68, 68,
+ 68, 68, 68, 68, 68, 68, 68, 68,
+ 68, 68, 68, 68, 68, 68, 68, 68
+ }
+};
+
+static const unsigned char hdctbl0[16] = {
+ 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0
+};
+
+static const unsigned char hdctblg0[12] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0xa, 0xb
+};
+static const unsigned char hactbl0[16] = {
+ 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7d
+};
+static const unsigned char hactblg0[162] = {
+ 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
+ 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61, 0x07,
+ 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08,
+ 0x23, 0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
+ 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16,
+ 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26, 0x27, 0x28,
+ 0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
+ 0x3a, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
+ 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
+ 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69,
+ 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
+ 0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89,
+ 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98,
+ 0x99, 0x9a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+ 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
+ 0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4, 0xc5,
+ 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4,
+ 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
+ 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
+ 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
+ 0xf9, 0xfa
+};
+
+static inline void jpeg_set_qtbl(void __iomem *regs, const unsigned char *qtbl,
+ unsigned long tab, int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ writel((unsigned int)qtbl[i], regs + tab + (i * 0x04));
+}
+
+static inline void jpeg_set_qtbl_lum(void __iomem *regs, int quality)
+{
+ /* this driver fills quantisation table 0 with data for luma */
+ jpeg_set_qtbl(regs, qtbl_luminance[quality], S5P_JPG_QTBL_CONTENT(0),
+ ARRAY_SIZE(qtbl_luminance[quality]));
+}
+
+static inline void jpeg_set_qtbl_chr(void __iomem *regs, int quality)
+{
+ /* this driver fills quantisation table 1 with data for chroma */
+ jpeg_set_qtbl(regs, qtbl_chrominance[quality], S5P_JPG_QTBL_CONTENT(1),
+ ARRAY_SIZE(qtbl_chrominance[quality]));
+}
+
+static inline void jpeg_set_htbl(void __iomem *regs, const unsigned char *htbl,
+ unsigned long tab, int len)
+{
+ int i;
+
+ for (i = 0; i < len; i++)
+ writel((unsigned int)htbl[i], regs + tab + (i * 0x04));
+}
+
+static inline void jpeg_set_hdctbl(void __iomem *regs)
+{
+ /* this driver fills table 0 for this component */
+ jpeg_set_htbl(regs, hdctbl0, S5P_JPG_HDCTBL(0), ARRAY_SIZE(hdctbl0));
+}
+
+static inline void jpeg_set_hdctblg(void __iomem *regs)
+{
+ /* this driver fills table 0 for this component */
+ jpeg_set_htbl(regs, hdctblg0, S5P_JPG_HDCTBLG(0), ARRAY_SIZE(hdctblg0));
+}
+
+static inline void jpeg_set_hactbl(void __iomem *regs)
+{
+ /* this driver fills table 0 for this component */
+ jpeg_set_htbl(regs, hactbl0, S5P_JPG_HACTBL(0), ARRAY_SIZE(hactbl0));
+}
+
+static inline void jpeg_set_hactblg(void __iomem *regs)
+{
+ /* this driver fills table 0 for this component */
+ jpeg_set_htbl(regs, hactblg0, S5P_JPG_HACTBLG(0), ARRAY_SIZE(hactblg0));
+}
+
+/*
+ * ============================================================================
+ * Device file operations
+ * ============================================================================
+ */
+
+static int queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq);
+static struct s5p_jpeg_fmt *s5p_jpeg_find_format(unsigned int mode,
+ __u32 pixelformat);
+
+static int s5p_jpeg_open(struct file *file)
+{
+ struct s5p_jpeg *jpeg = video_drvdata(file);
+ struct video_device *vfd = video_devdata(file);
+ struct s5p_jpeg_ctx *ctx;
+
+ ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ file->private_data = ctx;
+ ctx->jpeg = jpeg;
+ if (vfd == jpeg->vfd_encoder)
+ ctx->mode = S5P_JPEG_ENCODE;
+ else
+ ctx->mode = S5P_JPEG_DECODE;
+
+ ctx->m2m_ctx = v4l2_m2m_ctx_init(jpeg->m2m_dev, ctx, queue_init);
+ if (IS_ERR_OR_NULL(ctx->m2m_ctx)) {
+ int err = PTR_ERR(ctx->m2m_ctx);
+ kfree(ctx);
+ return err;
+ }
+
+ ctx->out_q.fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_RGB565X);
+ ctx->cap_q.fmt = s5p_jpeg_find_format(ctx->mode, V4L2_PIX_FMT_YUYV);
+
+ return 0;
+}
+
+static int s5p_jpeg_release(struct file *file)
+{
+ struct s5p_jpeg_ctx *ctx = file->private_data;
+
+ v4l2_m2m_ctx_release(ctx->m2m_ctx);
+ kfree(ctx);
+
+ return 0;
+}
+
+static unsigned int s5p_jpeg_poll(struct file *file,
+ struct poll_table_struct *wait)
+{
+ struct s5p_jpeg_ctx *ctx = file->private_data;
+
+ return v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
+}
+
+static int s5p_jpeg_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct s5p_jpeg_ctx *ctx = file->private_data;
+
+ return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
+}
+
+static const struct v4l2_file_operations s5p_jpeg_fops = {
+ .owner = THIS_MODULE,
+ .open = s5p_jpeg_open,
+ .release = s5p_jpeg_release,
+ .poll = s5p_jpeg_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = s5p_jpeg_mmap,
+};
+
+/*
+ * ============================================================================
+ * video ioctl operations
+ * ============================================================================
+ */
+
+static int get_byte(struct s5p_jpeg_buffer *buf)
+{
+ if (buf->curr >= buf->size)
+ return -1;
+
+ return ((unsigned char *)buf->data)[buf->curr++];
+}
+
+static int get_word_be(struct s5p_jpeg_buffer *buf, unsigned int *word)
+{
+ unsigned int temp;
+ int byte;
+
+ byte = get_byte(buf);
+ if (byte == -1)
+ return -1;
+ temp = byte << 8;
+ byte = get_byte(buf);
+ if (byte == -1)
+ return -1;
+ *word = (unsigned int)byte | temp;
+ return 0;
+}
+
+static void skip(struct s5p_jpeg_buffer *buf, long len)
+{
+ int c;
+
+ while (len > 0) {
+ c = get_byte(buf);
+ len--;
+ }
+}
+
+static bool s5p_jpeg_parse_hdr(struct s5p_jpeg_q_data *result,
+ unsigned long buffer, unsigned long size)
+{
+ int c, components, notfound;
+ unsigned int height, width, word;
+ long length;
+ struct s5p_jpeg_buffer jpeg_buffer;
+
+ jpeg_buffer.size = size;
+ jpeg_buffer.data = buffer;
+ jpeg_buffer.curr = 0;
+
+ notfound = 1;
+ while (notfound) {
+ c = get_byte(&jpeg_buffer);
+ if (c == -1)
+ break;
+ if (c != 0xff)
+ continue;
+ do
+ c = get_byte(&jpeg_buffer);
+ while (c == 0xff);
+ if (c == -1)
+ break;
+ if (c == 0)
+ continue;
+ length = 0;
+ switch (c) {
+ /* SOF0: baseline JPEG */
+ case SOF0:
+ if (get_word_be(&jpeg_buffer, &word))
+ break;
+
+ c = get_byte(&jpeg_buffer);
+ if (c == -1)
+ break;
+ if (get_word_be(&jpeg_buffer, &height))
+ break;
+ if (get_word_be(&jpeg_buffer, &width))
+ break;
+ components = get_byte(&jpeg_buffer);
+ if (components == -1)
+ break;
+ notfound = 0;
+
+ skip(&jpeg_buffer, components * 3);
+ break;
+
+ /* skip payload-less markers */
+ case SOI:
+ case RST+0:
+ case RST+1:
+ case RST+2:
+ case RST+3:
+ case RST+4:
+ case RST+5:
+ case RST+6:
+ case RST+7:
+ case EOI:
+ case TEM:
+ break;
+
+ /* skip uninteresting payload markers */
+ default:
+ if (get_word_be(&jpeg_buffer, &word))
+ break;
+ length = (long)word - 2;
+ skip(&jpeg_buffer, length);
+ break;
+ }
+ }
+ result->w = width;
+ result->h = height;
+ result->size = components;
+ return !notfound;
+}
+
+static int s5p_jpeg_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ if (ctx->mode == S5P_JPEG_ENCODE) {
+ strlcpy(cap->driver, S5P_JPEG_M2M_NAME " encoder",
+ sizeof(cap->driver));
+ strlcpy(cap->card, S5P_JPEG_M2M_NAME " encoder",
+ sizeof(cap->card));
+ } else {
+ strlcpy(cap->driver, S5P_JPEG_M2M_NAME " decoder",
+ sizeof(cap->driver));
+ strlcpy(cap->card, S5P_JPEG_M2M_NAME " decoder",
+ sizeof(cap->card));
+ }
+ cap->bus_info[0] = 0;
+ cap->capabilities = V4L2_CAP_STREAMING |
+ V4L2_CAP_VIDEO_CAPTURE |
+ V4L2_CAP_VIDEO_OUTPUT;
+ return 0;
+}
+
+static int enum_fmt(struct s5p_jpeg_fmt *formats, int n,
+ struct v4l2_fmtdesc *f, u32 type)
+{
+ int i, num;
+
+ num = 0;
+
+ for (i = 0; i < n; ++i) {
+ if (formats[i].types & type) {
+ /* index-th format of type type found ? */
+ if (num == f->index)
+ break;
+ /* Correct type but haven't reached our index yet,
+ * just increment per-type index */
+ ++num;
+ }
+ }
+
+ if (i < n) {
+ /* Format found */
+ struct s5p_jpeg_fmt *fmt = &formats[i];
+ strlcpy(f->description, fmt->name, sizeof(f->description));
+ f->pixelformat = fmt->fourcc;
+ return 0;
+ }
+
+ /* Format not found */
+ return -EINVAL;
+}
+
+static int s5p_jpeg_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct s5p_jpeg_ctx *ctx;
+
+ ctx = priv;
+
+ if (ctx->mode == S5P_JPEG_ENCODE)
+ return enum_fmt(formats_enc, NUM_FORMATS_ENC, f,
+ MEM2MEM_CAPTURE);
+
+ return enum_fmt(formats_dec, NUM_FORMATS_DEC, f, MEM2MEM_CAPTURE);
+}
+
+static int s5p_jpeg_enum_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct s5p_jpeg_ctx *ctx;
+
+ ctx = priv;
+
+ if (ctx->mode == S5P_JPEG_ENCODE)
+ return enum_fmt(formats_enc, NUM_FORMATS_ENC, f,
+ MEM2MEM_OUTPUT);
+
+ return enum_fmt(formats_dec, NUM_FORMATS_DEC, f, MEM2MEM_OUTPUT);
+}
+
+static int vidioc_g_fmt(struct s5p_jpeg_ctx *ctx, struct v4l2_format *f)
+{
+ struct vb2_queue *vq;
+ struct s5p_jpeg_q_data *q_data = NULL;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+
+ vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ switch (f->type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ q_data = &ctx->out_q;
+ break;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ if (ctx->mode == S5P_JPEG_DECODE && !ctx->hdr_parsed)
+ return -EINVAL;
+ q_data = &ctx->cap_q;
+ break;
+ default:
+ ;
+ }
+ pix->width = q_data->w;
+ pix->height = q_data->h;
+ pix->field = V4L2_FIELD_NONE;
+ pix->pixelformat = q_data->fmt->fourcc;
+ if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG)
+ pix->bytesperline = (q_data->w * q_data->fmt->depth) >> 3;
+ else
+ pix->bytesperline = 0;
+ pix->sizeimage = q_data->size;
+
+ return 0;
+}
+
+static int s5p_jpeg_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ return vidioc_g_fmt(priv, f);
+}
+
+static int s5p_jpeg_g_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ return vidioc_g_fmt(priv, f);
+}
+
+static struct s5p_jpeg_fmt *s5p_jpeg_find_format(unsigned int mode,
+ u32 pixelformat)
+{
+ unsigned int k;
+ struct s5p_jpeg_fmt *formats;
+ int n;
+
+ if (mode == S5P_JPEG_ENCODE) {
+ formats = formats_enc;
+ n = NUM_FORMATS_ENC;
+ } else {
+ formats = formats_dec;
+ n = NUM_FORMATS_DEC;
+ }
+
+ for (k = 0; k < n; k++) {
+ struct s5p_jpeg_fmt *fmt = &formats[k];
+ if (fmt->fourcc == pixelformat)
+ return fmt;
+ }
+
+ return NULL;
+
+}
+
+static void jpeg_bound_align_image(u32 *w, unsigned int wmin, unsigned int wmax,
+ unsigned int walign,
+ u32 *h, unsigned int hmin, unsigned int hmax,
+ unsigned int halign)
+{
+ int width, height, w_step, h_step;
+
+ width = *w;
+ height = *h;
+
+ w_step = 1 << walign;
+ h_step = 1 << halign;
+ v4l_bound_align_image(w, wmin, wmax, walign, h, hmin, hmax, halign, 0);
+
+ if (*w < width && (*w + w_step) < wmax)
+ *w += w_step;
+ if (*h < height && (*h + h_step) < hmax)
+ *h += h_step;
+
+}
+
+static int vidioc_try_fmt(struct v4l2_format *f, struct s5p_jpeg_fmt *fmt,
+ struct s5p_jpeg_ctx *ctx, int q_type)
+{
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+
+ if (pix->field == V4L2_FIELD_ANY)
+ pix->field = V4L2_FIELD_NONE;
+ else if (pix->field != V4L2_FIELD_NONE)
+ return -EINVAL;
+
+ /* V4L2 specification suggests the driver corrects the format struct
+ * if any of the dimensions is unsupported */
+ if (q_type == MEM2MEM_OUTPUT)
+ jpeg_bound_align_image(&pix->width, S5P_JPEG_MIN_WIDTH,
+ S5P_JPEG_MAX_WIDTH, 0,
+ &pix->height, S5P_JPEG_MIN_HEIGHT,
+ S5P_JPEG_MAX_HEIGHT, 0);
+ else
+ jpeg_bound_align_image(&pix->width, S5P_JPEG_MIN_WIDTH,
+ S5P_JPEG_MAX_WIDTH, fmt->h_align,
+ &pix->height, S5P_JPEG_MIN_HEIGHT,
+ S5P_JPEG_MAX_HEIGHT, fmt->v_align);
+
+ if (fmt->fourcc == V4L2_PIX_FMT_JPEG) {
+ if (pix->sizeimage <= 0)
+ return -EINVAL;
+ pix->bytesperline = 0;
+ } else {
+ pix->bytesperline = (pix->width * fmt->depth) >> 3;
+ pix->sizeimage = pix->height * pix->bytesperline;
+ }
+
+ return 0;
+}
+
+static int s5p_jpeg_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct s5p_jpeg_fmt *fmt;
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ fmt = s5p_jpeg_find_format(ctx->mode, f->fmt.pix.pixelformat);
+ if (!fmt || !(fmt->types & MEM2MEM_CAPTURE)) {
+ v4l2_err(&ctx->jpeg->v4l2_dev,
+ "Fourcc format (0x%08x) invalid.\n",
+ f->fmt.pix.pixelformat);
+ return -EINVAL;
+ }
+
+ return vidioc_try_fmt(f, fmt, ctx, MEM2MEM_CAPTURE);
+}
+
+static int s5p_jpeg_try_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct s5p_jpeg_fmt *fmt;
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ fmt = s5p_jpeg_find_format(ctx->mode, f->fmt.pix.pixelformat);
+ if (!fmt || !(fmt->types & MEM2MEM_OUTPUT)) {
+ v4l2_err(&ctx->jpeg->v4l2_dev,
+ "Fourcc format (0x%08x) invalid.\n",
+ f->fmt.pix.pixelformat);
+ return -EINVAL;
+ }
+
+ return vidioc_try_fmt(f, fmt, ctx, MEM2MEM_OUTPUT);
+}
+
+static int vidioc_s_fmt(struct s5p_jpeg_ctx *ctx, struct v4l2_format *f)
+{
+ struct vb2_queue *vq;
+ struct s5p_jpeg_q_data *q_data = NULL;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+
+ vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ switch (f->type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ q_data = &ctx->out_q;
+ break;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ q_data = &ctx->cap_q;
+ break;
+ default:
+ ;
+ }
+
+ if (vb2_is_busy(vq)) {
+ v4l2_err(&ctx->jpeg->v4l2_dev, "%s queue busy\n", __func__);
+ return -EBUSY;
+ }
+
+ q_data->fmt = s5p_jpeg_find_format(ctx->mode, pix->pixelformat);
+ q_data->w = pix->width;
+ q_data->h = pix->height;
+ if (q_data->fmt->fourcc != V4L2_PIX_FMT_JPEG)
+ q_data->size = q_data->w * q_data->h * q_data->fmt->depth >> 3;
+ else
+ q_data->size = pix->sizeimage;
+
+ return 0;
+}
+
+static int s5p_jpeg_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ int ret;
+
+ ret = s5p_jpeg_try_fmt_vid_cap(file, priv, f);
+ if (ret)
+ return ret;
+
+ return vidioc_s_fmt(priv, f);
+}
+
+static int s5p_jpeg_s_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ int ret;
+
+ ret = s5p_jpeg_try_fmt_vid_out(file, priv, f);
+ if (ret)
+ return ret;
+
+ return vidioc_s_fmt(priv, f);
+}
+
+static int s5p_jpeg_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *reqbufs)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
+}
+
+static int s5p_jpeg_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
+}
+
+static int s5p_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
+}
+
+static int s5p_jpeg_dqbuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
+}
+
+static int s5p_jpeg_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
+}
+
+static int s5p_jpeg_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
+}
+
+int s5p_jpeg_g_selection(struct file *file, void *priv,
+ struct v4l2_selection *s)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ switch (s->target) {
+ case V4L2_SEL_COMPOSE_ACTIVE:
+ case V4L2_SEL_CROP_ACTIVE:
+ s->r.width = ctx->out_q.w;
+ s->r.height = ctx->out_q.h;
+ break;
+ case V4L2_SEL_CROP_DEFAULT:
+ case V4L2_SEL_CROP_BOUNDS:
+ case V4L2_SEL_COMPOSE_DEFAULT:
+ case V4L2_SEL_COMPOSE_BOUNDS:
+ case V4L2_SEL_COMPOSE_PADDED:
+ s->r.width = ctx->cap_q.w;
+ s->r.height = ctx->cap_q.w;
+ break;
+ default:
+ return -EINVAL;
+ }
+ s->r.left = 0;
+ s->r.top = 0;
+ return 0;
+}
+
+static int s5p_jpeg_g_jpegcomp(struct file *file, void *priv,
+ struct v4l2_jpegcompression *compr)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ if (ctx->mode == S5P_JPEG_DECODE)
+ return -ENOTTY;
+
+ memset(compr, 0, sizeof(*compr));
+ compr->quality = ctx->compr_quality;
+
+ return 0;
+}
+
+static int s5p_jpeg_s_jpegcomp(struct file *file, void *priv,
+ struct v4l2_jpegcompression *compr)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ if (ctx->mode == S5P_JPEG_DECODE)
+ return -ENOTTY;
+
+ if (compr->quality < S5P_JPEG_COMPR_QUAL_BEST)
+ compr->quality = S5P_JPEG_COMPR_QUAL_BEST;
+ else if (compr->quality > S5P_JPEG_COMPR_QUAL_WORST)
+ compr->quality = S5P_JPEG_COMPR_QUAL_WORST;
+
+ ctx->compr_quality = compr->quality;
+
+ return 0;
+}
+
+static const struct v4l2_ioctl_ops s5p_jpeg_ioctl_ops = {
+ .vidioc_querycap = s5p_jpeg_querycap,
+
+ .vidioc_enum_fmt_vid_cap = s5p_jpeg_enum_fmt_vid_cap,
+ .vidioc_enum_fmt_vid_out = s5p_jpeg_enum_fmt_vid_out,
+
+ .vidioc_g_fmt_vid_cap = s5p_jpeg_g_fmt_vid_cap,
+ .vidioc_g_fmt_vid_out = s5p_jpeg_g_fmt_vid_out,
+
+ .vidioc_try_fmt_vid_cap = s5p_jpeg_try_fmt_vid_cap,
+ .vidioc_try_fmt_vid_out = s5p_jpeg_try_fmt_vid_out,
+
+ .vidioc_s_fmt_vid_cap = s5p_jpeg_s_fmt_vid_cap,
+ .vidioc_s_fmt_vid_out = s5p_jpeg_s_fmt_vid_out,
+
+ .vidioc_reqbufs = s5p_jpeg_reqbufs,
+ .vidioc_querybuf = s5p_jpeg_querybuf,
+
+ .vidioc_qbuf = s5p_jpeg_qbuf,
+ .vidioc_dqbuf = s5p_jpeg_dqbuf,
+
+ .vidioc_streamon = s5p_jpeg_streamon,
+ .vidioc_streamoff = s5p_jpeg_streamoff,
+
+ .vidioc_g_selection = s5p_jpeg_g_selection,
+
+ .vidioc_g_jpegcomp = s5p_jpeg_g_jpegcomp,
+ .vidioc_s_jpegcomp = s5p_jpeg_s_jpegcomp,
+};
+
+/*
+ * ============================================================================
+ * mem2mem callbacks
+ * ============================================================================
+ */
+
+static void s5p_jpeg_device_run(void *priv)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+ struct s5p_jpeg *jpeg = ctx->jpeg;
+ struct vb2_buffer *src_buf, *dst_buf;
+ unsigned long src_addr, dst_addr;
+
+ src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
+ src_addr = vb2_dma_contig_plane_dma_addr(src_buf, 0);
+ dst_addr = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+
+ pm_runtime_get_sync(jpeg->dev);
+
+ jpeg_reset(jpeg->regs);
+ jpeg_poweron(jpeg->regs);
+ jpeg_proc_mode(jpeg->regs, ctx->mode);
+ if (ctx->mode == S5P_JPEG_ENCODE) {
+ if (ctx->out_q.fmt->fourcc == V4L2_PIX_FMT_RGB565X)
+ jpeg_input_raw_mode(jpeg->regs, S5P_JPEG_RAW_IN_565);
+ else
+ jpeg_input_raw_mode(jpeg->regs, S5P_JPEG_RAW_IN_422);
+ if (ctx->cap_q.fmt->fourcc == V4L2_PIX_FMT_YUYV)
+ jpeg_subsampling_mode(jpeg->regs,
+ S5P_JPEG_SUBSAMPLING_422);
+ else
+ jpeg_subsampling_mode(jpeg->regs,
+ S5P_JPEG_SUBSAMPLING_420);
+ jpeg_dri(jpeg->regs, 0);
+ jpeg_x(jpeg->regs, ctx->out_q.w);
+ jpeg_y(jpeg->regs, ctx->out_q.h);
+ jpeg_imgadr(jpeg->regs, src_addr);
+ jpeg_jpgadr(jpeg->regs, dst_addr);
+
+ /* ultimately comes from sizeimage from userspace */
+ jpeg_enc_stream_int(jpeg->regs, ctx->cap_q.size);
+
+ /* JPEG RGB to YCbCr conversion matrix */
+ jpeg_coef(jpeg->regs, 1, 1, S5P_JPEG_COEF11);
+ jpeg_coef(jpeg->regs, 1, 2, S5P_JPEG_COEF12);
+ jpeg_coef(jpeg->regs, 1, 3, S5P_JPEG_COEF13);
+ jpeg_coef(jpeg->regs, 2, 1, S5P_JPEG_COEF21);
+ jpeg_coef(jpeg->regs, 2, 2, S5P_JPEG_COEF22);
+ jpeg_coef(jpeg->regs, 2, 3, S5P_JPEG_COEF23);
+ jpeg_coef(jpeg->regs, 3, 1, S5P_JPEG_COEF31);
+ jpeg_coef(jpeg->regs, 3, 2, S5P_JPEG_COEF32);
+ jpeg_coef(jpeg->regs, 3, 3, S5P_JPEG_COEF33);
+
+ /*
+ * JPEG IP allows storing 4 quantization tables
+ * We fill table 0 for luma and table 1 for chroma
+ */
+ jpeg_set_qtbl_lum(jpeg->regs, ctx->compr_quality);
+ jpeg_set_qtbl_chr(jpeg->regs, ctx->compr_quality);
+ /* use table 0 for Y */
+ jpeg_qtbl(jpeg->regs, 1, 0);
+ /* use table 1 for Cb and Cr*/
+ jpeg_qtbl(jpeg->regs, 2, 1);
+ jpeg_qtbl(jpeg->regs, 3, 1);
+
+ /* Y, Cb, Cr use Huffman table 0 */
+ jpeg_htbl_ac(jpeg->regs, 1);
+ jpeg_htbl_dc(jpeg->regs, 1);
+ jpeg_htbl_ac(jpeg->regs, 2);
+ jpeg_htbl_dc(jpeg->regs, 2);
+ jpeg_htbl_ac(jpeg->regs, 3);
+ jpeg_htbl_dc(jpeg->regs, 3);
+ } else {
+ jpeg_rst_int_enable(jpeg->regs, true);
+ jpeg_data_num_int_enable(jpeg->regs, true);
+ jpeg_final_mcu_num_int_enable(jpeg->regs, true);
+ jpeg_outform_raw(jpeg->regs, S5P_JPEG_RAW_OUT_422);
+ jpeg_jpgadr(jpeg->regs, src_addr);
+ jpeg_imgadr(jpeg->regs, dst_addr);
+ }
+ jpeg_start(jpeg->regs);
+}
+
+static int s5p_jpeg_job_ready(void *priv)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+
+ if (ctx->mode == S5P_JPEG_DECODE)
+ return ctx->hdr_parsed;
+ return 1;
+}
+
+static void s5p_jpeg_job_abort(void *priv)
+{
+}
+
+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,
+};
+
+/*
+ * ============================================================================
+ * Queue operations
+ * ============================================================================
+ */
+
+static int s5p_jpeg_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
+ unsigned int *nplanes, unsigned int sizes[],
+ void *alloc_ctxs[])
+{
+ struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq);
+ struct s5p_jpeg_q_data *q_data = NULL;
+ unsigned int size, count = *nbuffers;
+
+ switch (vq->type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ q_data = &ctx->out_q;
+ break;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ q_data = &ctx->cap_q;
+ break;
+ default:
+ ;
+ }
+
+ size = q_data->size;
+
+ /*
+ * header is parsed during decoding and parsed information stored
+ * in the context so we do not allow another buffer to overwrite it
+ */
+ if (ctx->mode == S5P_JPEG_DECODE)
+ count = 1;
+
+ *nbuffers = count;
+ *nplanes = 1;
+ sizes[0] = size;
+ alloc_ctxs[0] = ctx->jpeg->alloc_ctx;
+
+ return 0;
+}
+
+static int s5p_jpeg_buf_prepare(struct vb2_buffer *vb)
+{
+ struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct s5p_jpeg_q_data *q_data = NULL;
+
+ switch (vb->vb2_queue->type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ q_data = &ctx->out_q;
+ break;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ q_data = &ctx->cap_q;
+ break;
+ default:
+ ;
+ }
+ if (vb2_plane_size(vb, 0) < q_data->size) {
+ pr_err("%s data will not fit into plane (%lu < %lu)\n",
+ __func__, vb2_plane_size(vb, 0),
+ (long)q_data->size);
+ return -EINVAL;
+ }
+
+ vb2_set_plane_payload(vb, 0, q_data->size);
+
+ return 0;
+}
+
+static void s5p_jpeg_buf_queue(struct vb2_buffer *vb)
+{
+ struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+
+ if (ctx->mode == S5P_JPEG_DECODE &&
+ vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ struct s5p_jpeg_q_data tmp;
+ ctx->hdr_parsed = s5p_jpeg_parse_hdr(&tmp,
+ (unsigned long)vb2_plane_vaddr(vb, 0),
+ ctx->out_q.size);
+ if (ctx->hdr_parsed) {
+ struct s5p_jpeg_q_data *q_data;
+
+ q_data = &ctx->out_q;
+ q_data->w = tmp.w;
+ q_data->h = tmp.h;
+
+ q_data = &ctx->cap_q;
+ q_data->w = tmp.w;
+ q_data->h = tmp.h;
+
+ jpeg_bound_align_image(&q_data->w,
+ S5P_JPEG_MIN_WIDTH,
+ S5P_JPEG_MAX_WIDTH,
+ q_data->fmt->h_align,
+ &q_data->h,
+ S5P_JPEG_MIN_HEIGHT,
+ S5P_JPEG_MAX_HEIGHT,
+ q_data->fmt->v_align);
+ ctx->parsed_w = tmp.w;
+ ctx->parsed_h = tmp.h;
+ }
+ }
+ if (ctx->m2m_ctx)
+ v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
+}
+
+static void s5p_jpeg_wait_prepare(struct vb2_queue *vq)
+{
+ struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq);
+
+ mutex_unlock(&ctx->jpeg->lock);
+}
+
+static void s5p_jpeg_wait_finish(struct vb2_queue *vq)
+{
+ struct s5p_jpeg_ctx *ctx = vb2_get_drv_priv(vq);
+
+ mutex_lock(&ctx->jpeg->lock);
+}
+
+static struct vb2_ops s5p_jpeg_qops = {
+ .queue_setup = s5p_jpeg_queue_setup,
+ .buf_prepare = s5p_jpeg_buf_prepare,
+ .buf_queue = s5p_jpeg_buf_queue,
+ .wait_prepare = s5p_jpeg_wait_prepare,
+ .wait_finish = s5p_jpeg_wait_finish,
+};
+
+static int queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct s5p_jpeg_ctx *ctx = priv;
+ int ret;
+
+ memset(src_vq, 0, sizeof(*src_vq));
+ src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
+ src_vq->drv_priv = ctx;
+ src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ src_vq->ops = &s5p_jpeg_qops;
+ src_vq->mem_ops = &vb2_dma_contig_memops;
+
+ ret = vb2_queue_init(src_vq);
+ if (ret)
+ return ret;
+
+ memset(dst_vq, 0, sizeof(*dst_vq));
+ dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
+ dst_vq->drv_priv = ctx;
+ dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ dst_vq->ops = &s5p_jpeg_qops;
+ dst_vq->mem_ops = &vb2_dma_contig_memops;
+
+ return vb2_queue_init(dst_vq);
+}
+
+/*
+ * ============================================================================
+ * ISR
+ * ============================================================================
+ */
+
+static irqreturn_t s5p_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 enc_jpeg_too_large = false;
+ bool timer_elapsed = false;
+ bool op_completed = false;
+
+ curr_ctx = v4l2_m2m_get_curr_priv(jpeg->m2m_dev);
+
+ src_buf = v4l2_m2m_src_buf_remove(curr_ctx->m2m_ctx);
+ dst_buf = v4l2_m2m_dst_buf_remove(curr_ctx->m2m_ctx);
+
+ if (curr_ctx->mode == S5P_JPEG_ENCODE)
+ enc_jpeg_too_large = jpeg_enc_stream_stat(jpeg->regs);
+ timer_elapsed = jpeg_timer_stat(jpeg->regs);
+ op_completed = jpeg_result_stat_ok(jpeg->regs);
+ if (curr_ctx->mode == S5P_JPEG_DECODE)
+ op_completed = op_completed && jpeg_stream_stat_ok(jpeg->regs);
+
+ if (enc_jpeg_too_large) {
+ state = VB2_BUF_STATE_ERROR;
+ jpeg_clear_enc_stream_stat(jpeg->regs);
+ } else if (timer_elapsed) {
+ state = VB2_BUF_STATE_ERROR;
+ jpeg_clear_timer_stat(jpeg->regs);
+ } else if (!op_completed) {
+ state = VB2_BUF_STATE_ERROR;
+ } else {
+ payload_size = jpeg_compressed_size(jpeg->regs);
+ }
+
+ 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->m2m_ctx);
+
+ jpeg_clear_int(jpeg->regs);
+
+ pm_runtime_put(jpeg->dev);
+
+ return IRQ_HANDLED;
+}
+
+/*
+ * ============================================================================
+ * Driver basic infrastructure
+ * ============================================================================
+ */
+
+static int s5p_jpeg_probe(struct platform_device *pdev)
+{
+ struct s5p_jpeg *jpeg;
+ struct resource *res;
+ int ret;
+
+ /* JPEG IP abstraction struct */
+ jpeg = kzalloc(sizeof(struct s5p_jpeg), GFP_KERNEL);
+ if (!jpeg) {
+ dev_err(&pdev->dev, "no memory for state\n");
+ return -ENOMEM;
+ }
+ mutex_init(&jpeg->lock);
+ jpeg->dev = &pdev->dev;
+
+ /* memory-mapped registers */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "cannot find IO resource\n");
+ ret = -ENOENT;
+ goto jpeg_alloc_rollback;
+ }
+
+ jpeg->ioarea = request_mem_region(res->start, resource_size(res),
+ pdev->name);
+ if (!jpeg->ioarea) {
+ dev_err(&pdev->dev, "cannot request IO\n");
+ ret = -ENXIO;
+ goto jpeg_alloc_rollback;
+ }
+
+ jpeg->regs = ioremap(res->start, resource_size(res));
+ if (!jpeg->regs) {
+ dev_err(&pdev->dev, "cannot map IO\n");
+ ret = -ENXIO;
+ goto mem_region_rollback;
+ }
+
+ dev_dbg(&pdev->dev, "registers %p (%p, %p)\n",
+ jpeg->regs, jpeg->ioarea, res);
+
+ /* interrupt service routine registration */
+ jpeg->irq = ret = platform_get_irq(pdev, 0);
+ if (ret <= 0) {
+ dev_err(&pdev->dev, "cannot find IRQ\n");
+ goto ioremap_rollback;
+ }
+
+ ret = request_irq(jpeg->irq, s5p_jpeg_irq, 0,
+ dev_name(&pdev->dev), jpeg);
+
+ if (ret) {
+ dev_err(&pdev->dev, "cannot claim IRQ %d\n", jpeg->irq);
+ goto ioremap_rollback;
+ }
+
+ /* clocks */
+ jpeg->clk = clk_get(&pdev->dev, "jpeg");
+ if (IS_ERR_OR_NULL(jpeg->clk)) {
+ dev_err(&pdev->dev, "cannot get clock\n");
+ ret = -ENOENT;
+ goto request_irq_rollback;
+ }
+ dev_dbg(&pdev->dev, "clock source %p\n", jpeg->clk);
+ clk_enable(jpeg->clk);
+
+ /* v4l2 device */
+ ret = v4l2_device_register(&pdev->dev, &jpeg->v4l2_dev);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register v4l2 device\n");
+ goto clk_get_rollback;
+ }
+
+ /* JPEG encoder /dev/videoX node */
+ jpeg->vfd_encoder = video_device_alloc();
+ if (!jpeg->vfd_encoder) {
+ v4l2_err(&jpeg->v4l2_dev, "Failed to allocate video device\n");
+ ret = -ENOMEM;
+ goto device_register_rollback;
+ }
+ strlcpy(jpeg->vfd_encoder->name, S5P_JPEG_M2M_NAME,
+ sizeof(jpeg->vfd_encoder->name));
+ jpeg->vfd_encoder->fops = &s5p_jpeg_fops;
+ jpeg->vfd_encoder->ioctl_ops = &s5p_jpeg_ioctl_ops;
+ jpeg->vfd_encoder->minor = -1;
+ jpeg->vfd_encoder->release = video_device_release;
+ jpeg->vfd_encoder->lock = &jpeg->lock;
+ jpeg->vfd_encoder->v4l2_dev = &jpeg->v4l2_dev;
+
+ ret = video_register_device(jpeg->vfd_encoder, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ v4l2_err(&jpeg->v4l2_dev, "Failed to register video device\n");
+ goto enc_vdev_alloc_rollback;
+ }
+
+ video_set_drvdata(jpeg->vfd_encoder, jpeg);
+ v4l2_info(&jpeg->v4l2_dev,
+ "encoder device registered as /dev/video%d\n",
+ jpeg->vfd_encoder->num);
+
+ /* JPEG decoder /dev/videoX node */
+ jpeg->vfd_decoder = video_device_alloc();
+ if (!jpeg->vfd_decoder) {
+ v4l2_err(&jpeg->v4l2_dev, "Failed to allocate video device\n");
+ ret = -ENOMEM;
+ goto enc_vdev_register_rollback;
+ }
+ strlcpy(jpeg->vfd_decoder->name, S5P_JPEG_M2M_NAME,
+ sizeof(jpeg->vfd_decoder->name));
+ jpeg->vfd_decoder->fops = &s5p_jpeg_fops;
+ jpeg->vfd_decoder->ioctl_ops = &s5p_jpeg_ioctl_ops;
+ jpeg->vfd_decoder->minor = -1;
+ jpeg->vfd_decoder->release = video_device_release;
+ jpeg->vfd_decoder->lock = &jpeg->lock;
+ jpeg->vfd_decoder->v4l2_dev = &jpeg->v4l2_dev;
+
+ ret = video_register_device(jpeg->vfd_decoder, VFL_TYPE_GRABBER, -1);
+ if (ret) {
+ v4l2_err(&jpeg->v4l2_dev, "Failed to register video device\n");
+ goto dec_vdev_alloc_rollback;
+ }
+
+ video_set_drvdata(jpeg->vfd_decoder, jpeg);
+ v4l2_info(&jpeg->v4l2_dev,
+ "decoder device registered as /dev/video%d\n",
+ jpeg->vfd_decoder->num);
+
+ /* mem2mem device */
+ jpeg->m2m_dev = v4l2_m2m_init(&s5p_jpeg_m2m_ops);
+ if (IS_ERR_OR_NULL(jpeg->m2m_dev)) {
+ v4l2_err(&jpeg->v4l2_dev, "Failed to init mem2mem device\n");
+ ret = PTR_ERR(jpeg->m2m_dev);
+ goto dec_vdev_register_rollback;
+ }
+
+ jpeg->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
+ if (IS_ERR_OR_NULL(jpeg->alloc_ctx)) {
+ v4l2_err(&jpeg->v4l2_dev, "Failed to init memory allocator\n");
+ ret = PTR_ERR(jpeg->alloc_ctx);
+ goto m2m_init_rollback;
+ }
+
+ /* final statements & power management */
+ platform_set_drvdata(pdev, jpeg);
+
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+
+ v4l2_info(&jpeg->v4l2_dev, "Samsung S5P JPEG codec\n");
+
+ return 0;
+
+m2m_init_rollback:
+ v4l2_m2m_release(jpeg->m2m_dev);
+
+dec_vdev_register_rollback:
+ video_unregister_device(jpeg->vfd_decoder);
+
+dec_vdev_alloc_rollback:
+ video_device_release(jpeg->vfd_decoder);
+
+enc_vdev_register_rollback:
+ video_unregister_device(jpeg->vfd_encoder);
+
+enc_vdev_alloc_rollback:
+ video_device_release(jpeg->vfd_encoder);
+
+device_register_rollback:
+ v4l2_device_unregister(&jpeg->v4l2_dev);
+
+clk_get_rollback:
+ clk_disable(jpeg->clk);
+ clk_put(jpeg->clk);
+
+request_irq_rollback:
+ free_irq(jpeg->irq, jpeg);
+
+ioremap_rollback:
+ iounmap(jpeg->regs);
+
+mem_region_rollback:
+ release_resource(jpeg->ioarea);
+ release_mem_region(jpeg->ioarea->start, resource_size(jpeg->ioarea));
+
+jpeg_alloc_rollback:
+ kfree(jpeg);
+ return ret;
+}
+
+static int s5p_jpeg_remove(struct platform_device *pdev)
+{
+ struct s5p_jpeg *jpeg = platform_get_drvdata(pdev);
+
+ pm_runtime_disable(jpeg->dev);
+
+ vb2_dma_contig_cleanup_ctx(jpeg->alloc_ctx);
+ v4l2_m2m_release(jpeg->m2m_dev);
+ video_unregister_device(jpeg->vfd_decoder);
+ video_device_release(jpeg->vfd_decoder);
+ video_unregister_device(jpeg->vfd_encoder);
+ video_device_release(jpeg->vfd_encoder);
+ v4l2_device_unregister(&jpeg->v4l2_dev);
+
+ clk_disable(jpeg->clk);
+ clk_put(jpeg->clk);
+
+ free_irq(jpeg->irq, jpeg);
+
+ iounmap(jpeg->regs);
+
+ release_resource(jpeg->ioarea);
+ release_mem_region(jpeg->ioarea->start, resource_size(jpeg->ioarea));
+ kfree(jpeg);
+
+ return 0;
+}
+
+static int
+s5p_jpeg_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ return 0;
+}
+
+static int s5p_jpeg_resume(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static int s5p_jpeg_runtime_suspend(struct device *dev)
+{
+ return 0;
+}
+
+static int s5p_jpeg_runtime_resume(struct device *dev)
+{
+ struct s5p_jpeg *jpeg = dev_get_drvdata(dev);
+ /*
+ * JPEG IP allows storing two Huffman tables for each component
+ * We fill table 0 for each component
+ */
+ jpeg_set_hdctbl(jpeg->regs);
+ jpeg_set_hdctblg(jpeg->regs);
+ jpeg_set_hactbl(jpeg->regs);
+ jpeg_set_hactblg(jpeg->regs);
+ return 0;
+}
+
+static const struct dev_pm_ops s5p_jpeg_pm_ops = {
+ .runtime_suspend = s5p_jpeg_runtime_suspend,
+ .runtime_resume = s5p_jpeg_runtime_resume,
+};
+
+static struct platform_driver s5p_jpeg_driver = {
+ .probe = s5p_jpeg_probe,
+ .remove = s5p_jpeg_remove,
+ .suspend = s5p_jpeg_suspend,
+ .resume = s5p_jpeg_resume,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = S5P_JPEG_M2M_NAME,
+ .pm = &s5p_jpeg_pm_ops,
+ },
+};
+
+static int __init
+s5p_jpeg_register(void)
+{
+ int ret;
+
+ pr_info("S5P JPEG V4L2 Driver, (c) 2011 Samsung Electronics\n");
+
+ ret = platform_driver_register(&s5p_jpeg_driver);
+
+ if (ret) {
+ pr_err("%s: failed to register jpeg driver\n", __func__);
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+static void __exit
+s5p_jpeg_unregister(void)
+{
+ platform_driver_unregister(&s5p_jpeg_driver);
+}
+
+module_init(s5p_jpeg_register);
+module_exit(s5p_jpeg_unregister);
+
+MODULE_AUTHOR("Andrzej Pietrasiewicz <andrzej.p@samsung.com>");
+MODULE_DESCRIPTION("Samsung JPEG codec driver");
+MODULE_LICENSE("GPL");
+
new file mode 100644
@@ -0,0 +1,145 @@
+/* linux/drivers/media/video/s5p-jpeg/jpeg-core.h
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *
+ * 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.
+ */
+
+#ifndef JPEG_CORE_H_
+#define JPEG_CORE_H_
+
+#include <media/v4l2-device.h>
+
+#define S5P_JPEG_M2M_NAME "s5p-jpeg"
+
+/* JPEG compression quality setting */
+#define S5P_JPEG_COMPR_QUAL_BEST 0
+#define S5P_JPEG_COMPR_QUAL_WORST 3
+
+/* JPEG RGB to YCbCr conversion matrix coefficients */
+#define S5P_JPEG_COEF11 0x4d
+#define S5P_JPEG_COEF12 0x97
+#define S5P_JPEG_COEF13 0x1e
+#define S5P_JPEG_COEF21 0x2c
+#define S5P_JPEG_COEF22 0x57
+#define S5P_JPEG_COEF23 0x83
+#define S5P_JPEG_COEF31 0x83
+#define S5P_JPEG_COEF32 0x6e
+#define S5P_JPEG_COEF33 0x13
+
+/* a selection of JPEG markers */
+#define TEM 0x01
+#define SOF0 0xc0
+#define RST 0xd0
+#define SOI 0xd8
+#define EOI 0xd9
+#define DHP 0xde
+
+/* Flags that indicate a format can be used for capture/output */
+#define MEM2MEM_CAPTURE (1 << 0)
+#define MEM2MEM_OUTPUT (1 << 1)
+
+/**
+ * struct s5p_jpeg - JPEG IP abstraction
+ * @lock: the mutex protecting this structure
+ * @v4l2_dev: v4l2 device for mem2mem mode
+ * @vfd_encoder: video device node for encoder mem2mem mode
+ * @vfd_decoder: video device node for decoder mem2mem mode
+ * @m2m_dev: v4l2 mem2mem device data
+ * @ioarea: JPEG IP memory region
+ * @regs: JPEG IP registers mapping
+ * @irq: JPEG IP irq
+ * @clk: JPEG IP clock
+ * @dev: JPEG IP struct device
+ * @alloc_ctx: videobuf2 memory allocator's context
+ */
+struct s5p_jpeg {
+ struct mutex lock;
+
+ struct v4l2_device v4l2_dev;
+ struct video_device *vfd_encoder;
+ struct video_device *vfd_decoder;
+ struct v4l2_m2m_dev *m2m_dev;
+
+ struct resource *ioarea;
+ void __iomem *regs;
+ unsigned int irq;
+ struct clk *clk;
+ struct device *dev;
+ void *alloc_ctx;
+};
+
+/**
+ * struct jpeg_fmt - driver's internal color format data
+ * @name: format descritpion
+ * @fourcc: the fourcc code, 0 if not applicable
+ * @depth: number of bits per pixel
+ * @h_align: horizontal alignment order (align to 2^h_align)
+ * @v_align: vertical alignment order (align to 2^v_align)
+ * @types: types of queue this format is applicable to
+ */
+struct s5p_jpeg_fmt {
+ char *name;
+ u32 fourcc;
+ int depth;
+ int h_align;
+ int v_align;
+ u32 types;
+};
+
+/**
+ * s5p_jpeg_q_data - parameters of one queue
+ * @fmt: driver-specific format of this queue
+ * @w: image width
+ * @h: image height
+ * @size: image buffer size in bytes
+ */
+struct s5p_jpeg_q_data {
+ struct s5p_jpeg_fmt *fmt;
+ u32 w;
+ u32 h;
+ u32 size;
+};
+
+/**
+ * s5p_jpeg_ctx - the device context data
+ * @jpeg: JPEG IP device for this context
+ * @mode: compression (encode) operation or decompression (decode)
+ * @compr_quality: compression quality in compression (encode) mode
+ * @m2m_ctx: mem2mem device context
+ * @out_q: source (output) queue information
+ * @cap_fmt: destination (capture) queue queue information
+ * @hdr_parsed: set if header has been parsed during decompression
+ * parsed_w: image width parsed during decompression
+ * parsed_h: image height parsed during decompression
+ */
+struct s5p_jpeg_ctx {
+ struct s5p_jpeg *jpeg;
+ unsigned int mode;
+ unsigned int compr_quality;
+ struct v4l2_m2m_ctx *m2m_ctx;
+ struct s5p_jpeg_q_data out_q;
+ struct s5p_jpeg_q_data cap_q;
+ bool hdr_parsed;
+ u32 parsed_w;
+ u32 parsed_h;
+};
+
+/**
+ * s5p_jpeg_buffer - description of memory containing input JPEG data
+ * @size: buffer size
+ * @curr: current position in the buffer
+ * @data: pointer to the data
+ */
+struct s5p_jpeg_buffer {
+ unsigned long size;
+ unsigned long curr;
+ unsigned long data;
+};
+
+#endif /* JPEG_CORE_H */
new file mode 100644
@@ -0,0 +1,357 @@
+/* linux/drivers/media/video/s5p-jpeg/jpeg-hw.h
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *
+ * 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.
+ */
+#ifndef JPEG_HW_H_
+#define JPEG_HW_H_
+
+#include <linux/io.h>
+
+#include "jpeg-hw.h"
+#include "jpeg-regs.h"
+
+#define S5P_JPEG_MIN_WIDTH 32
+#define S5P_JPEG_MIN_HEIGHT 32
+#define S5P_JPEG_MAX_WIDTH 8192
+#define S5P_JPEG_MAX_HEIGHT 8192
+#define S5P_JPEG_ENCODE 0
+#define S5P_JPEG_DECODE 1
+#define S5P_JPEG_RAW_IN_565 0
+#define S5P_JPEG_RAW_IN_422 1
+#define S5P_JPEG_SUBSAMPLING_422 0
+#define S5P_JPEG_SUBSAMPLING_420 1
+#define S5P_JPEG_RAW_OUT_422 0
+#define S5P_JPEG_RAW_OUT_420 1
+
+static inline void jpeg_reset(void __iomem *regs)
+{
+ unsigned long reg;
+
+ writel(1, regs + S5P_JPG_SW_RESET);
+ reg = readl(regs + S5P_JPG_SW_RESET);
+ /* no other way but polling for when JPEG IP becomes operational */
+ while (reg != 0) {
+ cpu_relax();
+ reg = readl(regs + S5P_JPG_SW_RESET);
+ }
+}
+
+static inline void jpeg_poweron(void __iomem *regs)
+{
+ writel(S5P_POWER_ON, regs + S5P_JPGCLKCON);
+}
+
+static inline void jpeg_input_raw_mode(void __iomem *regs, unsigned long mode)
+{
+ unsigned long reg, m;
+
+ m = S5P_MOD_SEL_565;
+ if (mode == S5P_JPEG_RAW_IN_565)
+ m = S5P_MOD_SEL_565;
+ else if (mode == S5P_JPEG_RAW_IN_422)
+ m = S5P_MOD_SEL_422;
+
+ reg = readl(regs + S5P_JPGCMOD);
+ reg &= ~S5P_MOD_SEL_MASK;
+ reg |= m;
+ writel(reg, regs + S5P_JPGCMOD);
+}
+
+static inline void jpeg_input_raw_y16(void __iomem *regs, bool y16)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPGCMOD);
+ if (y16)
+ reg |= S5P_MODE_Y16;
+ else
+ reg &= ~S5P_MODE_Y16_MASK;
+ writel(reg, regs + S5P_JPGCMOD);
+}
+
+static inline void jpeg_proc_mode(void __iomem *regs, unsigned long mode)
+{
+ unsigned long reg, m;
+
+ m = S5P_PROC_MODE_DECOMPR;
+ if (mode == S5P_JPEG_ENCODE)
+ m = S5P_PROC_MODE_COMPR;
+ else
+ m = S5P_PROC_MODE_DECOMPR;
+ reg = readl(regs + S5P_JPGMOD);
+ reg &= ~S5P_PROC_MODE_MASK;
+ reg |= m;
+ writel(reg, regs + S5P_JPGMOD);
+}
+
+static inline void jpeg_subsampling_mode(void __iomem *regs, unsigned long mode)
+{
+ unsigned long reg, m;
+
+ m = S5P_SUBSAMPLING_MODE_422;
+ if (mode == S5P_JPEG_SUBSAMPLING_422)
+ m = S5P_SUBSAMPLING_MODE_422;
+ else if (mode == S5P_JPEG_SUBSAMPLING_420)
+ m = S5P_SUBSAMPLING_MODE_420;
+ reg = readl(regs + S5P_JPGMOD);
+ reg &= ~S5P_SUBSAMPLING_MODE_MASK;
+ reg |= m;
+ writel(reg, regs + S5P_JPGMOD);
+}
+
+static inline void jpeg_dri(void __iomem *regs, unsigned short dri)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPGDRI_U);
+ reg &= ~S5P_JPG_BYTE_MASK;
+ reg |= (dri >> S5P_JPGDRI_U_SHIFT) & S5P_JPG_BYTE_MASK;
+ writel(reg, regs + S5P_JPGDRI_U);
+
+ reg = readl(regs + S5P_JPGDRI_L);
+ reg &= ~S5P_JPG_BYTE_MASK;
+ reg |= (dri >> S5P_JPGDRI_L_SHIFT) & S5P_JPG_BYTE_MASK;
+ writel(reg, regs + S5P_JPGDRI_L);
+}
+
+static inline void jpeg_qtbl(void __iomem *regs, unsigned short t,
+ unsigned short n)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPG_QTBL);
+ reg &= ~S5P_QT_NUMt_MASK(t);
+ reg |= (n << S5P_QT_NUMt_SHIFT(t)) & S5P_QT_NUMt_MASK(t);
+ writel(reg, regs + S5P_JPG_QTBL);
+}
+
+static inline void jpeg_htbl_ac(void __iomem *regs, unsigned short t)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPG_HTBL);
+ reg &= ~S5P_HT_NUMt_AC_MASK(t);
+ /* this driver uses table 0 for all color components */
+ reg |= (0 << S5P_HT_NUMt_AC_SHIFT(t)) & S5P_HT_NUMt_AC_MASK(t);
+ writel(reg, regs + S5P_JPG_HTBL);
+}
+
+static inline void jpeg_htbl_dc(void __iomem *regs, unsigned short t)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPG_HTBL);
+ reg &= ~S5P_HT_NUMt_DC_MASK(t);
+ /* this driver uses table 0 for all color components */
+ reg |= (0 << S5P_HT_NUMt_DC_SHIFT(t)) & S5P_HT_NUMt_DC_MASK(t);
+ writel(reg, regs + S5P_JPG_HTBL);
+}
+
+static inline void jpeg_y(void __iomem *regs, unsigned short y)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPGY_U);
+ reg &= ~S5P_JPG_BYTE_MASK;
+ reg |= (y >> S5P_VER_RES_U_SHIFT) & S5P_JPG_BYTE_MASK;
+ writel(reg, regs + S5P_JPGY_U);
+
+ reg = readl(regs + S5P_JPGY_L);
+ reg &= ~S5P_JPG_BYTE_MASK;
+ reg |= (y >> S5P_VER_RES_L_SHIFT) & S5P_JPG_BYTE_MASK;
+ writel(reg, regs + S5P_JPGY_L);
+}
+
+static inline void jpeg_x(void __iomem *regs, unsigned short x)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPGX_U);
+ reg &= ~S5P_JPG_BYTE_MASK;
+ reg |= (x >> S5P_HOR_RES_U_SHIFT) & S5P_JPG_BYTE_MASK;
+ writel(reg, regs + S5P_JPGX_U);
+
+ reg = readl(regs + S5P_JPGX_L);
+ reg &= ~S5P_JPG_BYTE_MASK;
+ reg |= (x >> S5P_HOR_RES_L_SHIFT) & S5P_JPG_BYTE_MASK;
+ writel(reg, regs + S5P_JPGX_L);
+}
+
+static inline void jpeg_rst_int_enable(void __iomem *regs, bool enable)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPGINTSE);
+ reg &= ~S5P_RSTm_INT_EN_MASK;
+ if (enable)
+ reg |= S5P_RSTm_INT_EN;
+ writel(reg, regs + S5P_JPGINTSE);
+}
+
+static inline void jpeg_data_num_int_enable(void __iomem *regs, bool enable)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPGINTSE);
+ reg &= ~S5P_DATA_NUM_INT_EN_MASK;
+ if (enable)
+ reg |= S5P_DATA_NUM_INT_EN;
+ writel(reg, regs + S5P_JPGINTSE);
+}
+
+static inline void jpeg_final_mcu_num_int_enable(void __iomem *regs, bool enbl)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPGINTSE);
+ reg &= ~S5P_FINAL_MCU_NUM_INT_EN_MASK;
+ if (enbl)
+ reg |= S5P_FINAL_MCU_NUM_INT_EN;
+ writel(reg, regs + S5P_JPGINTSE);
+}
+
+static inline void jpeg_timer_enable(void __iomem *regs, unsigned long val)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPG_TIMER_SE);
+ reg |= S5P_TIMER_INT_EN;
+ reg &= ~S5P_TIMER_INIT_MASK;
+ reg |= val & S5P_TIMER_INIT_MASK;
+ writel(reg, regs + S5P_JPG_TIMER_SE);
+}
+
+static inline void jpeg_timer_disable(void __iomem *regs)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPG_TIMER_SE);
+ reg &= ~S5P_TIMER_INT_EN_MASK;
+ writel(reg, regs + S5P_JPG_TIMER_SE);
+}
+
+static inline int jpeg_timer_stat(void __iomem *regs)
+{
+ return (int)((readl(regs + S5P_JPG_TIMER_ST) & S5P_TIMER_INT_STAT_MASK)
+ >> S5P_TIMER_INT_STAT_SHIFT);
+}
+
+static inline void jpeg_clear_timer_stat(void __iomem *regs)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPG_TIMER_SE);
+ reg &= ~S5P_TIMER_INT_STAT_MASK;
+ writel(reg, regs + S5P_JPG_TIMER_SE);
+}
+
+static inline void jpeg_enc_stream_int(void __iomem *regs, unsigned long size)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPG_ENC_STREAM_INTSE);
+ reg &= ~S5P_ENC_STREAM_BOUND_MASK;
+ reg |= S5P_ENC_STREAM_INT_EN;
+ reg |= size & S5P_ENC_STREAM_BOUND_MASK;
+ writel(reg, regs + S5P_JPG_ENC_STREAM_INTSE);
+}
+
+static inline int jpeg_enc_stream_stat(void __iomem *regs)
+{
+ return (int)(readl(regs + S5P_JPG_ENC_STREAM_INTST) &
+ S5P_ENC_STREAM_INT_STAT_MASK);
+}
+
+static inline void jpeg_clear_enc_stream_stat(void __iomem *regs)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPG_ENC_STREAM_INTSE);
+ reg &= ~S5P_ENC_STREAM_INT_MASK;
+ writel(reg, regs + S5P_JPG_ENC_STREAM_INTSE);
+}
+
+static inline void jpeg_outform_raw(void __iomem *regs, unsigned long format)
+{
+ unsigned long reg, f;
+
+ f = S5P_DEC_OUT_FORMAT_422;
+ if (format == S5P_JPEG_RAW_OUT_422)
+ f = S5P_DEC_OUT_FORMAT_422;
+ else if (format == S5P_JPEG_RAW_OUT_420)
+ f = S5P_DEC_OUT_FORMAT_420;
+ reg = readl(regs + S5P_JPG_OUTFORM);
+ reg &= ~S5P_DEC_OUT_FORMAT_MASK;
+ reg |= f;
+ writel(reg, regs + S5P_JPG_OUTFORM);
+}
+
+static inline void jpeg_jpgadr(void __iomem *regs, unsigned long addr)
+{
+ writel(addr, regs + S5P_JPG_JPGADR);
+}
+
+static inline void jpeg_imgadr(void __iomem *regs, unsigned long addr)
+{
+ writel(addr, regs + S5P_JPG_IMGADR);
+}
+
+static inline void jpeg_coef(void __iomem *regs, unsigned short i,
+ unsigned short j, unsigned short coef)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPG_COEF(i));
+ reg &= ~S5P_COEFn_MASK(j);
+ reg |= (coef << S5P_COEFn_SHIFT(j)) & S5P_COEFn_MASK(j);
+ writel(reg, regs + S5P_JPG_COEF(i));
+}
+
+static inline void jpeg_start(void __iomem *regs)
+{
+ writel(1, regs + S5P_JSTART);
+}
+
+static inline int jpeg_result_stat_ok(void __iomem *regs)
+{
+ return (int)((readl(regs + S5P_JPGINTST) & S5P_RESULT_STAT_MASK)
+ >> S5P_RESULT_STAT_SHIFT);
+}
+
+static inline int jpeg_stream_stat_ok(void __iomem *regs)
+{
+ return !(int)((readl(regs + S5P_JPGINTST) & S5P_STREAM_STAT_MASK)
+ >> S5P_STREAM_STAT_SHIFT);
+}
+
+static inline void jpeg_clear_int(void __iomem *regs)
+{
+ unsigned long reg;
+
+ reg = readl(regs + S5P_JPGINTST);
+ writel(S5P_INT_RELEASE, regs + S5P_JPGCOM);
+ reg = readl(regs + S5P_JPGOPR);
+}
+
+static inline int jpeg_compressed_size(void __iomem *regs)
+{
+ unsigned long jpeg_size = 0;
+
+ jpeg_size |= (readl(regs + S5P_JPGCNT_U) & S5P_JPG_BYTE_MASK)
+ << S5P_BYTE_CNT_U_SHIFT;
+ jpeg_size |= (readl(regs + S5P_JPGCNT_M) & S5P_JPG_BYTE_MASK)
+ << S5P_BYTE_CNT_M_SHIFT;
+ jpeg_size |= (readl(regs + S5P_JPGCNT_L) & S5P_JPG_BYTE_MASK)
+ << S5P_BYTE_CNT_L_SHIFT;
+
+ return (int)jpeg_size;
+}
+
+#endif /* JPEG_HW_H_ */
new file mode 100644
@@ -0,0 +1,181 @@
+/* linux/drivers/media/video/s5p-jpeg/jpeg-regs.h
+ *
+ * Register definition file for Samsung JPEG codec driver
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
+ *
+ * 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.
+ */
+
+#ifndef JPEG_REGS_H_
+#define JPEG_REGS_H_
+
+#define S5P_JPG_BYTE_MASK 0xff
+
+/* JPEG mode register */
+#define S5P_JPGMOD 0x00
+#define S5P_PROC_MODE_MASK (0x1 << 3)
+#define S5P_PROC_MODE_DECOMPR (0x1 << 3)
+#define S5P_PROC_MODE_COMPR (0x0 << 3)
+#define S5P_SUBSAMPLING_MODE_MASK 0x7
+#define S5P_SUBSAMPLING_MODE_444 (0x0 << 0)
+#define S5P_SUBSAMPLING_MODE_422 (0x1 << 0)
+#define S5P_SUBSAMPLING_MODE_420 (0x2 << 0)
+#define S5P_SUBSAMPLING_MODE_GRAY (0x3 << 0)
+
+/* JPEG operation status register */
+#define S5P_JPGOPR 0x04
+
+/* Quantization tables*/
+#define S5P_JPG_QTBL 0x08
+#define S5P_QT_NUMt_SHIFT(t) (((t) - 1) << 1)
+#define S5P_QT_NUMt_MASK(t) (0x3 << S5P_QT_NUMt_SHIFT(t))
+
+/* Huffman tables */
+#define S5P_JPG_HTBL 0x0c
+#define S5P_HT_NUMt_AC_SHIFT(t) (((t) << 1) - 1)
+#define S5P_HT_NUMt_AC_MASK(t) (0x1 << S5P_HT_NUMt_AC_SHIFT(t))
+
+#define S5P_HT_NUMt_DC_SHIFT(t) (((t) - 1) << 1)
+#define S5P_HT_NUMt_DC_MASK(t) (0x1 << S5P_HT_NUMt_DC_SHIFT(t))
+
+/* JPEG restart interval register upper byte */
+#define S5P_JPGDRI_U 0x10
+#define S5P_JPGDRI_U_SHIFT 8
+
+/* JPEG restart interval register lower byte */
+#define S5P_JPGDRI_L 0x14
+#define S5P_JPGDRI_L_SHIFT 0
+
+/* JPEG vertical resolution register upper byte */
+#define S5P_JPGY_U 0x18
+#define S5P_VER_RES_U_SHIFT 8
+
+/* JPEG vertical resolution register lower byte */
+#define S5P_JPGY_L 0x1c
+#define S5P_VER_RES_L_SHIFT 0
+
+/* JPEG horizontal resolution register upper byte */
+#define S5P_JPGX_U 0x20
+#define S5P_HOR_RES_U_SHIFT 8
+
+/* JPEG horizontal resolution register lower byte */
+#define S5P_JPGX_L 0x24
+#define S5P_HOR_RES_L_SHIFT 0
+
+/* JPEG byte count register upper byte */
+#define S5P_JPGCNT_U 0x28
+#define S5P_BYTE_CNT_U_SHIFT 16
+
+/* JPEG byte count register middle byte */
+#define S5P_JPGCNT_M 0x2c
+#define S5P_BYTE_CNT_M_SHIFT 8
+
+/* JPEG byte count register lower byte */
+#define S5P_JPGCNT_L 0x30
+#define S5P_BYTE_CNT_L_SHIFT 0
+
+/* JPEG interrupt setting register */
+#define S5P_JPGINTSE 0x34
+#define S5P_RSTm_INT_EN_MASK (0x1 << 7)
+#define S5P_RSTm_INT_EN (0x1 << 7)
+#define S5P_DATA_NUM_INT_EN_MASK (0x1 << 6)
+#define S5P_DATA_NUM_INT_EN (0x1 << 6)
+#define S5P_FINAL_MCU_NUM_INT_EN_MASK (0x1 << 5)
+#define S5P_FINAL_MCU_NUM_INT_EN (0x1 << 5)
+
+/* JPEG interrupt status register */
+#define S5P_JPGINTST 0x38
+#define S5P_RESULT_STAT_SHIFT 6
+#define S5P_RESULT_STAT_MASK (0x1 << S5P_RESULT_STAT_SHIFT)
+#define S5P_STREAM_STAT_SHIFT 5
+#define S5P_STREAM_STAT_MASK (0x1 << S5P_STREAM_STAT_SHIFT)
+
+/* JPEG command register */
+#define S5P_JPGCOM 0x4c
+#define S5P_INT_RELEASE (0x1 << 2)
+
+/* Raw image data r/w address register */
+#define S5P_JPG_IMGADR 0x50
+
+/* JPEG file r/w address register */
+#define S5P_JPG_JPGADR 0x58
+
+/* Coefficient for RGB-to-YCbCr converter register */
+#define S5P_JPG_COEF(n) (0x5c + (((n) - 1) << 2))
+#define S5P_COEFn_SHIFT(j) ((3 - (j)) << 3)
+#define S5P_COEFn_MASK(j) (0xff << S5P_COEFn_SHIFT(j))
+
+/* JPEG color mode register */
+#define S5P_JPGCMOD 0x68
+#define S5P_MOD_SEL_MASK (0x7 << 5)
+#define S5P_MOD_SEL_422 (0x1 << 5)
+#define S5P_MOD_SEL_565 (0x2 << 5)
+#define S5P_MODE_Y16_MASK (0x1 << 1)
+#define S5P_MODE_Y16 (0x1 << 1)
+
+/* JPEG clock control register */
+#define S5P_JPGCLKCON 0x6c
+#define S5P_CLK_DOWN_READY (0x1 << 1)
+#define S5P_POWER_ON (0x1 << 0)
+
+/* JPEG start register */
+#define S5P_JSTART 0x70
+
+/* JPEG SW reset register */
+#define S5P_JPG_SW_RESET 0x78
+
+/* JPEG timer setting register */
+#define S5P_JPG_TIMER_SE 0x7c
+#define S5P_TIMER_INT_EN_MASK (0x1 << 31)
+#define S5P_TIMER_INT_EN (0x1 << 31)
+#define S5P_TIMER_INIT_MASK 0x7fffffff
+
+/* JPEG timer status register */
+#define S5P_JPG_TIMER_ST 0x80
+#define S5P_TIMER_INT_STAT_SHIFT 31
+#define S5P_TIMER_INT_STAT_MASK (0x1 << S5P_TIMER_INT_STAT_SHIFT)
+#define S5P_TIMER_CNT_SHIFT 0
+#define S5P_TIMER_CNT_MASK 0x7fffffff
+
+/* JPEG decompression output format register */
+#define S5P_JPG_OUTFORM 0x88
+#define S5P_DEC_OUT_FORMAT_MASK (0x1 << 0)
+#define S5P_DEC_OUT_FORMAT_422 (0x0 << 0)
+#define S5P_DEC_OUT_FORMAT_420 (0x1 << 0)
+
+/* JPEG version register */
+#define S5P_JPG_VERSION 0x8c
+
+/* JPEG compressed stream size interrupt setting register */
+#define S5P_JPG_ENC_STREAM_INTSE 0x98
+#define S5P_ENC_STREAM_INT_MASK (0x1 << 24)
+#define S5P_ENC_STREAM_INT_EN (0x1 << 24)
+#define S5P_ENC_STREAM_BOUND_MASK 0xffffff
+
+/* JPEG compressed stream size interrupt status register */
+#define S5P_JPG_ENC_STREAM_INTST 0x9c
+#define S5P_ENC_STREAM_INT_STAT_MASK 0x1
+
+/* JPEG quantizer table register */
+#define S5P_JPG_QTBL_CONTENT(n) (0x400 + (n) * 0x100)
+
+/* JPEG DC Huffman table register */
+#define S5P_JPG_HDCTBL(n) (0x800 + (n) * 0x400)
+
+/* JPEG DC Huffman table register */
+#define S5P_JPG_HDCTBLG(n) (0x840 + (n) * 0x400)
+
+/* JPEG AC Huffman table register */
+#define S5P_JPG_HACTBL(n) (0x880 + (n) * 0x400)
+
+/* JPEG AC Huffman table register */
+#define S5P_JPG_HACTBLG(n) (0x8c0 + (n) * 0x400)
+
+#endif /* JPEG_REGS_H_ */
+