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-rw-r--r--drivers/media/platform/coda.c1849
1 files changed, 1849 insertions, 0 deletions
diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c
new file mode 100644
index 000000000000..0d6e0a095607
--- /dev/null
+++ b/drivers/media/platform/coda.c
@@ -0,0 +1,1849 @@
+/*
+ * Coda multi-standard codec IP
+ *
+ * Copyright (C) 2012 Vista Silicon S.L.
+ * Javier Martin, <javier.martin@vista-silicon.com>
+ * Xavier Duret
+ *
+ * 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/clk.h>
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+#include <linux/of.h>
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-mem2mem.h>
+#include <media/videobuf2-core.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "coda.h"
+
+#define CODA_NAME "coda"
+
+#define CODA_MAX_INSTANCES 4
+
+#define CODA_FMO_BUF_SIZE 32
+#define CODADX6_WORK_BUF_SIZE (288 * 1024 + CODA_FMO_BUF_SIZE * 8 * 1024)
+#define CODA7_WORK_BUF_SIZE (512 * 1024 + CODA_FMO_BUF_SIZE * 8 * 1024)
+#define CODA_PARA_BUF_SIZE (10 * 1024)
+#define CODA_ISRAM_SIZE (2048 * 2)
+
+#define CODA_OUTPUT_BUFS 4
+#define CODA_CAPTURE_BUFS 2
+
+#define MAX_W 720
+#define MAX_H 576
+#define CODA_MAX_FRAME_SIZE 0x90000
+#define FMO_SLICE_SAVE_BUF_SIZE (32)
+#define CODA_DEFAULT_GAMMA 4096
+
+#define MIN_W 176
+#define MIN_H 144
+#define MAX_W 720
+#define MAX_H 576
+
+#define S_ALIGN 1 /* multiple of 2 */
+#define W_ALIGN 1 /* multiple of 2 */
+#define H_ALIGN 1 /* multiple of 2 */
+
+#define fh_to_ctx(__fh) container_of(__fh, struct coda_ctx, fh)
+
+static int coda_debug;
+module_param(coda_debug, int, 0);
+MODULE_PARM_DESC(coda_debug, "Debug level (0-1)");
+
+enum {
+ V4L2_M2M_SRC = 0,
+ V4L2_M2M_DST = 1,
+};
+
+enum coda_fmt_type {
+ CODA_FMT_ENC,
+ CODA_FMT_RAW,
+};
+
+enum coda_inst_type {
+ CODA_INST_ENCODER,
+ CODA_INST_DECODER,
+};
+
+enum coda_product {
+ CODA_DX6 = 0xf001,
+};
+
+struct coda_fmt {
+ char *name;
+ u32 fourcc;
+ enum coda_fmt_type type;
+};
+
+struct coda_devtype {
+ char *firmware;
+ enum coda_product product;
+ struct coda_fmt *formats;
+ unsigned int num_formats;
+ size_t workbuf_size;
+};
+
+/* Per-queue, driver-specific private data */
+struct coda_q_data {
+ unsigned int width;
+ unsigned int height;
+ unsigned int sizeimage;
+ struct coda_fmt *fmt;
+};
+
+struct coda_aux_buf {
+ void *vaddr;
+ dma_addr_t paddr;
+ u32 size;
+};
+
+struct coda_dev {
+ struct v4l2_device v4l2_dev;
+ struct video_device vfd;
+ struct platform_device *plat_dev;
+ struct coda_devtype *devtype;
+
+ void __iomem *regs_base;
+ struct clk *clk_per;
+ struct clk *clk_ahb;
+
+ struct coda_aux_buf codebuf;
+ struct coda_aux_buf workbuf;
+
+ spinlock_t irqlock;
+ struct mutex dev_mutex;
+ struct v4l2_m2m_dev *m2m_dev;
+ struct vb2_alloc_ctx *alloc_ctx;
+ int instances;
+};
+
+struct coda_params {
+ u8 h264_intra_qp;
+ u8 h264_inter_qp;
+ u8 mpeg4_intra_qp;
+ u8 mpeg4_inter_qp;
+ u8 gop_size;
+ int codec_mode;
+ enum v4l2_mpeg_video_multi_slice_mode slice_mode;
+ u32 framerate;
+ u16 bitrate;
+ u32 slice_max_mb;
+};
+
+struct coda_ctx {
+ struct coda_dev *dev;
+ int aborting;
+ int rawstreamon;
+ int compstreamon;
+ u32 isequence;
+ struct coda_q_data q_data[2];
+ enum coda_inst_type inst_type;
+ enum v4l2_colorspace colorspace;
+ struct coda_params params;
+ struct v4l2_m2m_ctx *m2m_ctx;
+ struct v4l2_ctrl_handler ctrls;
+ struct v4l2_fh fh;
+ struct vb2_buffer *reference;
+ int gopcounter;
+ char vpu_header[3][64];
+ int vpu_header_size[3];
+ struct coda_aux_buf parabuf;
+ int idx;
+};
+
+static inline void coda_write(struct coda_dev *dev, u32 data, u32 reg)
+{
+ v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
+ "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
+ writel(data, dev->regs_base + reg);
+}
+
+static inline unsigned int coda_read(struct coda_dev *dev, u32 reg)
+{
+ u32 data;
+ data = readl(dev->regs_base + reg);
+ v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
+ "%s: data=0x%x, reg=0x%x\n", __func__, data, reg);
+ return data;
+}
+
+static inline unsigned long coda_isbusy(struct coda_dev *dev)
+{
+ return coda_read(dev, CODA_REG_BIT_BUSY);
+}
+
+static inline int coda_is_initialized(struct coda_dev *dev)
+{
+ return (coda_read(dev, CODA_REG_BIT_CUR_PC) != 0);
+}
+
+static int coda_wait_timeout(struct coda_dev *dev)
+{
+ unsigned long timeout = jiffies + msecs_to_jiffies(1000);
+
+ while (coda_isbusy(dev)) {
+ if (time_after(jiffies, timeout))
+ return -ETIMEDOUT;
+ }
+ return 0;
+}
+
+static void coda_command_async(struct coda_ctx *ctx, int cmd)
+{
+ struct coda_dev *dev = ctx->dev;
+ coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY);
+
+ coda_write(dev, ctx->idx, CODA_REG_BIT_RUN_INDEX);
+ coda_write(dev, ctx->params.codec_mode, CODA_REG_BIT_RUN_COD_STD);
+ coda_write(dev, cmd, CODA_REG_BIT_RUN_COMMAND);
+}
+
+static int coda_command_sync(struct coda_ctx *ctx, int cmd)
+{
+ struct coda_dev *dev = ctx->dev;
+
+ coda_command_async(ctx, cmd);
+ return coda_wait_timeout(dev);
+}
+
+static struct coda_q_data *get_q_data(struct coda_ctx *ctx,
+ enum v4l2_buf_type type)
+{
+ switch (type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ return &(ctx->q_data[V4L2_M2M_SRC]);
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ return &(ctx->q_data[V4L2_M2M_DST]);
+ default:
+ BUG();
+ }
+ return NULL;
+}
+
+/*
+ * Add one array of supported formats for each version of Coda:
+ * i.MX27 -> codadx6
+ * i.MX51 -> coda7
+ * i.MX6 -> coda960
+ */
+static struct coda_fmt codadx6_formats[] = {
+ {
+ .name = "YUV 4:2:0 Planar",
+ .fourcc = V4L2_PIX_FMT_YUV420,
+ .type = CODA_FMT_RAW,
+ },
+ {
+ .name = "H264 Encoded Stream",
+ .fourcc = V4L2_PIX_FMT_H264,
+ .type = CODA_FMT_ENC,
+ },
+ {
+ .name = "MPEG4 Encoded Stream",
+ .fourcc = V4L2_PIX_FMT_MPEG4,
+ .type = CODA_FMT_ENC,
+ },
+};
+
+static struct coda_fmt *find_format(struct coda_dev *dev, struct v4l2_format *f)
+{
+ struct coda_fmt *formats = dev->devtype->formats;
+ int num_formats = dev->devtype->num_formats;
+ unsigned int k;
+
+ for (k = 0; k < num_formats; k++) {
+ if (formats[k].fourcc == f->fmt.pix.pixelformat)
+ break;
+ }
+
+ if (k == num_formats)
+ return NULL;
+
+ return &formats[k];
+}
+
+/*
+ * V4L2 ioctl() operations.
+ */
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ strlcpy(cap->driver, CODA_NAME, sizeof(cap->driver));
+ strlcpy(cap->card, CODA_NAME, sizeof(cap->card));
+ strlcpy(cap->bus_info, CODA_NAME, sizeof(cap->bus_info));
+ cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_OUTPUT
+ | V4L2_CAP_STREAMING;
+ cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
+
+ return 0;
+}
+
+static int enum_fmt(void *priv, struct v4l2_fmtdesc *f,
+ enum coda_fmt_type type)
+{
+ struct coda_ctx *ctx = fh_to_ctx(priv);
+ struct coda_dev *dev = ctx->dev;
+ struct coda_fmt *formats = dev->devtype->formats;
+ struct coda_fmt *fmt;
+ int num_formats = dev->devtype->num_formats;
+ int i, num = 0;
+
+ for (i = 0; i < num_formats; i++) {
+ if (formats[i].type == type) {
+ if (num == f->index)
+ break;
+ ++num;
+ }
+ }
+
+ if (i < num_formats) {
+ fmt = &formats[i];
+ strlcpy(f->description, fmt->name, sizeof(f->description));
+ f->pixelformat = fmt->fourcc;
+ return 0;
+ }
+
+ /* Format not found */
+ return -EINVAL;
+}
+
+static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ return enum_fmt(priv, f, CODA_FMT_ENC);
+}
+
+static int vidioc_enum_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ return enum_fmt(priv, f, CODA_FMT_RAW);
+}
+
+static int vidioc_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
+{
+ struct vb2_queue *vq;
+ struct coda_q_data *q_data;
+ struct coda_ctx *ctx = fh_to_ctx(priv);
+
+ vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ q_data = get_q_data(ctx, f->type);
+
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ f->fmt.pix.pixelformat = q_data->fmt->fourcc;
+ f->fmt.pix.width = q_data->width;
+ f->fmt.pix.height = q_data->height;
+ if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV420)
+ f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 2);
+ else /* encoded formats h.264/mpeg4 */
+ f->fmt.pix.bytesperline = 0;
+
+ f->fmt.pix.sizeimage = q_data->sizeimage;
+ f->fmt.pix.colorspace = ctx->colorspace;
+
+ return 0;
+}
+
+static int vidioc_try_fmt(struct coda_dev *dev, struct v4l2_format *f)
+{
+ enum v4l2_field field;
+
+ field = f->fmt.pix.field;
+ if (field == V4L2_FIELD_ANY)
+ field = V4L2_FIELD_NONE;
+ else if (V4L2_FIELD_NONE != field)
+ return -EINVAL;
+
+ /* V4L2 specification suggests the driver corrects the format struct
+ * if any of the dimensions is unsupported */
+ f->fmt.pix.field = field;
+
+ if (f->fmt.pix.pixelformat == V4L2_PIX_FMT_YUV420) {
+ v4l_bound_align_image(&f->fmt.pix.width, MIN_W, MAX_W,
+ W_ALIGN, &f->fmt.pix.height,
+ MIN_H, MAX_H, H_ALIGN, S_ALIGN);
+ f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 2);
+ f->fmt.pix.sizeimage = f->fmt.pix.height *
+ f->fmt.pix.bytesperline;
+ } else { /*encoded formats h.264/mpeg4 */
+ f->fmt.pix.bytesperline = 0;
+ f->fmt.pix.sizeimage = CODA_MAX_FRAME_SIZE;
+ }
+
+ return 0;
+}
+
+static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ int ret;
+ struct coda_fmt *fmt;
+ struct coda_ctx *ctx = fh_to_ctx(priv);
+
+ fmt = find_format(ctx->dev, f);
+ /*
+ * Since decoding support is not implemented yet do not allow
+ * CODA_FMT_RAW formats in the capture interface.
+ */
+ if (!fmt || !(fmt->type == CODA_FMT_ENC))
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_H264;
+
+ f->fmt.pix.colorspace = ctx->colorspace;
+
+ ret = vidioc_try_fmt(ctx->dev, f);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int vidioc_try_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct coda_ctx *ctx = fh_to_ctx(priv);
+ struct coda_fmt *fmt;
+ int ret;
+
+ fmt = find_format(ctx->dev, f);
+ /*
+ * Since decoding support is not implemented yet do not allow
+ * CODA_FMT formats in the capture interface.
+ */
+ if (!fmt || !(fmt->type == CODA_FMT_RAW))
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420;
+
+ if (!f->fmt.pix.colorspace)
+ f->fmt.pix.colorspace = V4L2_COLORSPACE_REC709;
+
+ ret = vidioc_try_fmt(ctx->dev, f);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int vidioc_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f)
+{
+ struct coda_q_data *q_data;
+ struct vb2_queue *vq;
+ int ret;
+
+ vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
+ if (!vq)
+ return -EINVAL;
+
+ q_data = get_q_data(ctx, f->type);
+ if (!q_data)
+ return -EINVAL;
+
+ if (vb2_is_busy(vq)) {
+ v4l2_err(&ctx->dev->v4l2_dev, "%s queue busy\n", __func__);
+ return -EBUSY;
+ }
+
+ ret = vidioc_try_fmt(ctx->dev, f);
+ if (ret)
+ return ret;
+
+ q_data->fmt = find_format(ctx->dev, f);
+ q_data->width = f->fmt.pix.width;
+ q_data->height = f->fmt.pix.height;
+ if (q_data->fmt->fourcc == V4L2_PIX_FMT_YUV420) {
+ q_data->sizeimage = q_data->width * q_data->height * 3 / 2;
+ } else { /* encoded format h.264/mpeg-4 */
+ q_data->sizeimage = CODA_MAX_FRAME_SIZE;
+ }
+
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "Setting format for type %d, wxh: %dx%d, fmt: %d\n",
+ f->type, q_data->width, q_data->height, q_data->fmt->fourcc);
+
+ return 0;
+}
+
+static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ int ret;
+
+ ret = vidioc_try_fmt_vid_cap(file, priv, f);
+ if (ret)
+ return ret;
+
+ return vidioc_s_fmt(fh_to_ctx(priv), f);
+}
+
+static int vidioc_s_fmt_vid_out(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct coda_ctx *ctx = fh_to_ctx(priv);
+ int ret;
+
+ ret = vidioc_try_fmt_vid_out(file, priv, f);
+ if (ret)
+ return ret;
+
+ ret = vidioc_s_fmt(fh_to_ctx(priv), f);
+ if (ret)
+ ctx->colorspace = f->fmt.pix.colorspace;
+
+ return ret;
+}
+
+static int vidioc_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *reqbufs)
+{
+ struct coda_ctx *ctx = fh_to_ctx(priv);
+
+ return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
+}
+
+static int vidioc_querybuf(struct file *file, void *priv,
+ struct v4l2_buffer *buf)
+{
+ struct coda_ctx *ctx = fh_to_ctx(priv);
+
+ return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
+}
+
+static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
+{
+ struct coda_ctx *ctx = fh_to_ctx(priv);
+
+ return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
+}
+
+static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
+{
+ struct coda_ctx *ctx = fh_to_ctx(priv);
+
+ return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
+}
+
+static int vidioc_streamon(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct coda_ctx *ctx = fh_to_ctx(priv);
+
+ return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
+}
+
+static int vidioc_streamoff(struct file *file, void *priv,
+ enum v4l2_buf_type type)
+{
+ struct coda_ctx *ctx = fh_to_ctx(priv);
+
+ return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
+}
+
+static const struct v4l2_ioctl_ops coda_ioctl_ops = {
+ .vidioc_querycap = vidioc_querycap,
+
+ .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = vidioc_g_fmt,
+ .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
+
+ .vidioc_enum_fmt_vid_out = vidioc_enum_fmt_vid_out,
+ .vidioc_g_fmt_vid_out = vidioc_g_fmt,
+ .vidioc_try_fmt_vid_out = vidioc_try_fmt_vid_out,
+ .vidioc_s_fmt_vid_out = vidioc_s_fmt_vid_out,
+
+ .vidioc_reqbufs = vidioc_reqbufs,
+ .vidioc_querybuf = vidioc_querybuf,
+
+ .vidioc_qbuf = vidioc_qbuf,
+ .vidioc_dqbuf = vidioc_dqbuf,
+
+ .vidioc_streamon = vidioc_streamon,
+ .vidioc_streamoff = vidioc_streamoff,
+};
+
+/*
+ * Mem-to-mem operations.
+ */
+static void coda_device_run(void *m2m_priv)
+{
+ struct coda_ctx *ctx = m2m_priv;
+ struct coda_q_data *q_data_src, *q_data_dst;
+ struct vb2_buffer *src_buf, *dst_buf;
+ struct coda_dev *dev = ctx->dev;
+ int force_ipicture;
+ int quant_param = 0;
+ u32 picture_y, picture_cb, picture_cr;
+ u32 pic_stream_buffer_addr, pic_stream_buffer_size;
+ u32 dst_fourcc;
+
+ src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
+ q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+ q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ dst_fourcc = q_data_dst->fmt->fourcc;
+
+ src_buf->v4l2_buf.sequence = ctx->isequence;
+ dst_buf->v4l2_buf.sequence = ctx->isequence;
+ ctx->isequence++;
+
+ /*
+ * Workaround coda firmware BUG that only marks the first
+ * frame as IDR. This is a problem for some decoders that can't
+ * recover when a frame is lost.
+ */
+ if (src_buf->v4l2_buf.sequence % ctx->params.gop_size) {
+ src_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME;
+ src_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME;
+ } else {
+ src_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
+ src_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME;
+ }
+
+ /*
+ * Copy headers at the beginning of the first frame for H.264 only.
+ * In MPEG4 they are already copied by the coda.
+ */
+ if (src_buf->v4l2_buf.sequence == 0) {
+ pic_stream_buffer_addr =
+ vb2_dma_contig_plane_dma_addr(dst_buf, 0) +
+ ctx->vpu_header_size[0] +
+ ctx->vpu_header_size[1] +
+ ctx->vpu_header_size[2];
+ pic_stream_buffer_size = CODA_MAX_FRAME_SIZE -
+ ctx->vpu_header_size[0] -
+ ctx->vpu_header_size[1] -
+ ctx->vpu_header_size[2];
+ memcpy(vb2_plane_vaddr(dst_buf, 0),
+ &ctx->vpu_header[0][0], ctx->vpu_header_size[0]);
+ memcpy(vb2_plane_vaddr(dst_buf, 0) + ctx->vpu_header_size[0],
+ &ctx->vpu_header[1][0], ctx->vpu_header_size[1]);
+ memcpy(vb2_plane_vaddr(dst_buf, 0) + ctx->vpu_header_size[0] +
+ ctx->vpu_header_size[1], &ctx->vpu_header[2][0],
+ ctx->vpu_header_size[2]);
+ } else {
+ pic_stream_buffer_addr =
+ vb2_dma_contig_plane_dma_addr(dst_buf, 0);
+ pic_stream_buffer_size = CODA_MAX_FRAME_SIZE;
+ }
+
+ if (src_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) {
+ force_ipicture = 1;
+ switch (dst_fourcc) {
+ case V4L2_PIX_FMT_H264:
+ quant_param = ctx->params.h264_intra_qp;
+ break;
+ case V4L2_PIX_FMT_MPEG4:
+ quant_param = ctx->params.mpeg4_intra_qp;
+ break;
+ default:
+ v4l2_warn(&ctx->dev->v4l2_dev,
+ "cannot set intra qp, fmt not supported\n");
+ break;
+ }
+ } else {
+ force_ipicture = 0;
+ switch (dst_fourcc) {
+ case V4L2_PIX_FMT_H264:
+ quant_param = ctx->params.h264_inter_qp;
+ break;
+ case V4L2_PIX_FMT_MPEG4:
+ quant_param = ctx->params.mpeg4_inter_qp;
+ break;
+ default:
+ v4l2_warn(&ctx->dev->v4l2_dev,
+ "cannot set inter qp, fmt not supported\n");
+ break;
+ }
+ }
+
+ /* submit */
+ coda_write(dev, 0, CODA_CMD_ENC_PIC_ROT_MODE);
+ coda_write(dev, quant_param, CODA_CMD_ENC_PIC_QS);
+
+
+ picture_y = vb2_dma_contig_plane_dma_addr(src_buf, 0);
+ picture_cb = picture_y + q_data_src->width * q_data_src->height;
+ picture_cr = picture_cb + q_data_src->width / 2 *
+ q_data_src->height / 2;
+
+ coda_write(dev, picture_y, CODA_CMD_ENC_PIC_SRC_ADDR_Y);
+ coda_write(dev, picture_cb, CODA_CMD_ENC_PIC_SRC_ADDR_CB);
+ coda_write(dev, picture_cr, CODA_CMD_ENC_PIC_SRC_ADDR_CR);
+ coda_write(dev, force_ipicture << 1 & 0x2,
+ CODA_CMD_ENC_PIC_OPTION);
+
+ coda_write(dev, pic_stream_buffer_addr, CODA_CMD_ENC_PIC_BB_START);
+ coda_write(dev, pic_stream_buffer_size / 1024,
+ CODA_CMD_ENC_PIC_BB_SIZE);
+ coda_command_async(ctx, CODA_COMMAND_PIC_RUN);
+}
+
+static int coda_job_ready(void *m2m_priv)
+{
+ struct coda_ctx *ctx = m2m_priv;
+
+ /*
+ * For both 'P' and 'key' frame cases 1 picture
+ * and 1 frame are needed.
+ */
+ if (!v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) ||
+ !v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx)) {
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "not ready: not enough video buffers.\n");
+ return 0;
+ }
+
+ /* For P frames a reference picture is needed too */
+ if ((ctx->gopcounter != (ctx->params.gop_size - 1)) &&
+ !ctx->reference) {
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "not ready: reference picture not available.\n");
+ return 0;
+ }
+
+ if (coda_isbusy(ctx->dev)) {
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "not ready: coda is still busy.\n");
+ return 0;
+ }
+
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "job ready\n");
+ return 1;
+}
+
+static void coda_job_abort(void *priv)
+{
+ struct coda_ctx *ctx = priv;
+ struct coda_dev *dev = ctx->dev;
+
+ ctx->aborting = 1;
+
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "Aborting task\n");
+
+ v4l2_m2m_job_finish(dev->m2m_dev, ctx->m2m_ctx);
+}
+
+static void coda_lock(void *m2m_priv)
+{
+ struct coda_ctx *ctx = m2m_priv;
+ struct coda_dev *pcdev = ctx->dev;
+ mutex_lock(&pcdev->dev_mutex);
+}
+
+static void coda_unlock(void *m2m_priv)
+{
+ struct coda_ctx *ctx = m2m_priv;
+ struct coda_dev *pcdev = ctx->dev;
+ mutex_unlock(&pcdev->dev_mutex);
+}
+
+static struct v4l2_m2m_ops coda_m2m_ops = {
+ .device_run = coda_device_run,
+ .job_ready = coda_job_ready,
+ .job_abort = coda_job_abort,
+ .lock = coda_lock,
+ .unlock = coda_unlock,
+};
+
+static void set_default_params(struct coda_ctx *ctx)
+{
+ struct coda_dev *dev = ctx->dev;
+
+ ctx->params.codec_mode = CODA_MODE_INVALID;
+ ctx->colorspace = V4L2_COLORSPACE_REC709;
+ ctx->params.framerate = 30;
+ ctx->reference = NULL;
+ ctx->aborting = 0;
+
+ /* Default formats for output and input queues */
+ ctx->q_data[V4L2_M2M_SRC].fmt = &dev->devtype->formats[0];
+ ctx->q_data[V4L2_M2M_DST].fmt = &dev->devtype->formats[1];
+ ctx->q_data[V4L2_M2M_SRC].width = MAX_W;
+ ctx->q_data[V4L2_M2M_SRC].height = MAX_H;
+ ctx->q_data[V4L2_M2M_SRC].sizeimage = (MAX_W * MAX_H * 3) / 2;
+ ctx->q_data[V4L2_M2M_DST].width = MAX_W;
+ ctx->q_data[V4L2_M2M_DST].height = MAX_H;
+ ctx->q_data[V4L2_M2M_DST].sizeimage = CODA_MAX_FRAME_SIZE;
+}
+
+/*
+ * Queue operations
+ */
+static int coda_queue_setup(struct vb2_queue *vq,
+ const struct v4l2_format *fmt,
+ unsigned int *nbuffers, unsigned int *nplanes,
+ unsigned int sizes[], void *alloc_ctxs[])
+{
+ struct coda_ctx *ctx = vb2_get_drv_priv(vq);
+ unsigned int size;
+
+ if (vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ *nbuffers = CODA_OUTPUT_BUFS;
+ if (fmt)
+ size = fmt->fmt.pix.width *
+ fmt->fmt.pix.height * 3 / 2;
+ else
+ size = MAX_W *
+ MAX_H * 3 / 2;
+ } else {
+ *nbuffers = CODA_CAPTURE_BUFS;
+ size = CODA_MAX_FRAME_SIZE;
+ }
+
+ *nplanes = 1;
+ sizes[0] = size;
+
+ alloc_ctxs[0] = ctx->dev->alloc_ctx;
+
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "get %d buffer(s) of size %d each.\n", *nbuffers, size);
+
+ return 0;
+}
+
+static int coda_buf_prepare(struct vb2_buffer *vb)
+{
+ struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ struct coda_q_data *q_data;
+
+ q_data = get_q_data(ctx, vb->vb2_queue->type);
+
+ if (vb2_plane_size(vb, 0) < q_data->sizeimage) {
+ v4l2_warn(&ctx->dev->v4l2_dev,
+ "%s data will not fit into plane (%lu < %lu)\n",
+ __func__, vb2_plane_size(vb, 0),
+ (long)q_data->sizeimage);
+ return -EINVAL;
+ }
+
+ vb2_set_plane_payload(vb, 0, q_data->sizeimage);
+
+ return 0;
+}
+
+static void coda_buf_queue(struct vb2_buffer *vb)
+{
+ struct coda_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
+ v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
+}
+
+static void coda_wait_prepare(struct vb2_queue *q)
+{
+ struct coda_ctx *ctx = vb2_get_drv_priv(q);
+ coda_unlock(ctx);
+}
+
+static void coda_wait_finish(struct vb2_queue *q)
+{
+ struct coda_ctx *ctx = vb2_get_drv_priv(q);
+ coda_lock(ctx);
+}
+
+static int coda_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ struct coda_ctx *ctx = vb2_get_drv_priv(q);
+ struct v4l2_device *v4l2_dev = &ctx->dev->v4l2_dev;
+ u32 bitstream_buf, bitstream_size;
+ struct coda_dev *dev = ctx->dev;
+ struct coda_q_data *q_data_src, *q_data_dst;
+ u32 dst_fourcc;
+ struct vb2_buffer *buf;
+ struct vb2_queue *src_vq;
+ u32 value;
+ int i = 0;
+
+ if (count < 1)
+ return -EINVAL;
+
+ if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
+ ctx->rawstreamon = 1;
+ else
+ ctx->compstreamon = 1;
+
+ /* Don't start the coda unless both queues are on */
+ if (!(ctx->rawstreamon & ctx->compstreamon))
+ return 0;
+
+ ctx->gopcounter = ctx->params.gop_size - 1;
+
+ q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+ buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
+ bitstream_buf = vb2_dma_contig_plane_dma_addr(buf, 0);
+ q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ bitstream_size = q_data_dst->sizeimage;
+ dst_fourcc = q_data_dst->fmt->fourcc;
+
+ /* Find out whether coda must encode or decode */
+ if (q_data_src->fmt->type == CODA_FMT_RAW &&
+ q_data_dst->fmt->type == CODA_FMT_ENC) {
+ ctx->inst_type = CODA_INST_ENCODER;
+ } else if (q_data_src->fmt->type == CODA_FMT_ENC &&
+ q_data_dst->fmt->type == CODA_FMT_RAW) {
+ ctx->inst_type = CODA_INST_DECODER;
+ v4l2_err(v4l2_dev, "decoding not supported.\n");
+ return -EINVAL;
+ } else {
+ v4l2_err(v4l2_dev, "couldn't tell instance type.\n");
+ return -EINVAL;
+ }
+
+ if (!coda_is_initialized(dev)) {
+ v4l2_err(v4l2_dev, "coda is not initialized.\n");
+ return -EFAULT;
+ }
+ coda_write(dev, ctx->parabuf.paddr, CODA_REG_BIT_PARA_BUF_ADDR);
+ coda_write(dev, bitstream_buf, CODA_REG_BIT_RD_PTR(ctx->idx));
+ coda_write(dev, bitstream_buf, CODA_REG_BIT_WR_PTR(ctx->idx));
+ switch (dev->devtype->product) {
+ case CODA_DX6:
+ coda_write(dev, CODADX6_STREAM_BUF_DYNALLOC_EN |
+ CODADX6_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL);
+ break;
+ default:
+ coda_write(dev, CODA7_STREAM_BUF_DYNALLOC_EN |
+ CODA7_STREAM_BUF_PIC_RESET, CODA_REG_BIT_STREAM_CTRL);
+ }
+
+ /* Configure the coda */
+ coda_write(dev, 0xffff4c00, CODA_REG_BIT_SEARCH_RAM_BASE_ADDR);
+
+ /* Could set rotation here if needed */
+ switch (dev->devtype->product) {
+ case CODA_DX6:
+ value = (q_data_src->width & CODADX6_PICWIDTH_MASK) << CODADX6_PICWIDTH_OFFSET;
+ break;
+ default:
+ value = (q_data_src->width & CODA7_PICWIDTH_MASK) << CODA7_PICWIDTH_OFFSET;
+ }
+ value |= (q_data_src->height & CODA_PICHEIGHT_MASK) << CODA_PICHEIGHT_OFFSET;
+ coda_write(dev, value, CODA_CMD_ENC_SEQ_SRC_SIZE);
+ coda_write(dev, ctx->params.framerate,
+ CODA_CMD_ENC_SEQ_SRC_F_RATE);
+
+ switch (dst_fourcc) {
+ case V4L2_PIX_FMT_MPEG4:
+ if (dev->devtype->product == CODA_DX6)
+ ctx->params.codec_mode = CODADX6_MODE_ENCODE_MP4;
+ else
+ ctx->params.codec_mode = CODA7_MODE_ENCODE_MP4;
+
+ coda_write(dev, CODA_STD_MPEG4, CODA_CMD_ENC_SEQ_COD_STD);
+ coda_write(dev, 0, CODA_CMD_ENC_SEQ_MP4_PARA);
+ break;
+ case V4L2_PIX_FMT_H264:
+ if (dev->devtype->product == CODA_DX6)
+ ctx->params.codec_mode = CODADX6_MODE_ENCODE_H264;
+ else
+ ctx->params.codec_mode = CODA7_MODE_ENCODE_H264;
+
+ coda_write(dev, CODA_STD_H264, CODA_CMD_ENC_SEQ_COD_STD);
+ coda_write(dev, 0, CODA_CMD_ENC_SEQ_264_PARA);
+ break;
+ default:
+ v4l2_err(v4l2_dev,
+ "dst format (0x%08x) invalid.\n", dst_fourcc);
+ return -EINVAL;
+ }
+
+ value = (ctx->params.slice_max_mb & CODA_SLICING_SIZE_MASK) << CODA_SLICING_SIZE_OFFSET;
+ value |= (1 & CODA_SLICING_UNIT_MASK) << CODA_SLICING_UNIT_OFFSET;
+ if (ctx->params.slice_mode == V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB)
+ value |= 1 & CODA_SLICING_MODE_MASK;
+ coda_write(dev, value, CODA_CMD_ENC_SEQ_SLICE_MODE);
+ value = ctx->params.gop_size & CODA_GOP_SIZE_MASK;
+ coda_write(dev, value, CODA_CMD_ENC_SEQ_GOP_SIZE);
+
+ if (ctx->params.bitrate) {
+ /* Rate control enabled */
+ value = (ctx->params.bitrate & CODA_RATECONTROL_BITRATE_MASK) << CODA_RATECONTROL_BITRATE_OFFSET;
+ value |= 1 & CODA_RATECONTROL_ENABLE_MASK;
+ } else {
+ value = 0;
+ }
+ coda_write(dev, value, CODA_CMD_ENC_SEQ_RC_PARA);
+
+ coda_write(dev, 0, CODA_CMD_ENC_SEQ_RC_BUF_SIZE);
+ coda_write(dev, 0, CODA_CMD_ENC_SEQ_INTRA_REFRESH);
+
+ coda_write(dev, bitstream_buf, CODA_CMD_ENC_SEQ_BB_START);
+ coda_write(dev, bitstream_size / 1024, CODA_CMD_ENC_SEQ_BB_SIZE);
+
+ /* set default gamma */
+ value = (CODA_DEFAULT_GAMMA & CODA_GAMMA_MASK) << CODA_GAMMA_OFFSET;
+ coda_write(dev, value, CODA_CMD_ENC_SEQ_RC_GAMMA);
+
+ value = (CODA_DEFAULT_GAMMA > 0) << CODA_OPTION_GAMMA_OFFSET;
+ value |= (0 & CODA_OPTION_SLICEREPORT_MASK) << CODA_OPTION_SLICEREPORT_OFFSET;
+ coda_write(dev, value, CODA_CMD_ENC_SEQ_OPTION);
+
+ if (dst_fourcc == V4L2_PIX_FMT_H264) {
+ value = (FMO_SLICE_SAVE_BUF_SIZE << 7);
+ value |= (0 & CODA_FMOPARAM_TYPE_MASK) << CODA_FMOPARAM_TYPE_OFFSET;
+ value |= 0 & CODA_FMOPARAM_SLICENUM_MASK;
+ coda_write(dev, value, CODA_CMD_ENC_SEQ_FMO);
+ }
+
+ if (coda_command_sync(ctx, CODA_COMMAND_SEQ_INIT)) {
+ v4l2_err(v4l2_dev, "CODA_COMMAND_SEQ_INIT timeout\n");
+ return -ETIMEDOUT;
+ }
+
+ if (coda_read(dev, CODA_RET_ENC_SEQ_SUCCESS) == 0)
+ return -EFAULT;
+
+ /*
+ * Walk the src buffer list and let the codec know the
+ * addresses of the pictures.
+ */
+ src_vq = v4l2_m2m_get_vq(ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+ for (i = 0; i < src_vq->num_buffers; i++) {
+ u32 *p;
+
+ buf = src_vq->bufs[i];
+ p = ctx->parabuf.vaddr;
+
+ p[i * 3] = vb2_dma_contig_plane_dma_addr(buf, 0);
+ p[i * 3 + 1] = p[i * 3] + q_data_src->width *
+ q_data_src->height;
+ p[i * 3 + 2] = p[i * 3 + 1] + q_data_src->width / 2 *
+ q_data_src->height / 2;
+ }
+
+ coda_write(dev, src_vq->num_buffers, CODA_CMD_SET_FRAME_BUF_NUM);
+ coda_write(dev, q_data_src->width, CODA_CMD_SET_FRAME_BUF_STRIDE);
+ if (coda_command_sync(ctx, CODA_COMMAND_SET_FRAME_BUF)) {
+ v4l2_err(v4l2_dev, "CODA_COMMAND_SET_FRAME_BUF timeout\n");
+ return -ETIMEDOUT;
+ }
+
+ /* Save stream headers */
+ buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
+ switch (dst_fourcc) {
+ case V4L2_PIX_FMT_H264:
+ /*
+ * Get SPS in the first frame and copy it to an
+ * intermediate buffer.
+ */
+ coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START);
+ coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE);
+ coda_write(dev, CODA_HEADER_H264_SPS, CODA_CMD_ENC_HEADER_CODE);
+ if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) {
+ v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER timeout\n");
+ return -ETIMEDOUT;
+ }
+ ctx->vpu_header_size[0] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) -
+ coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
+ memcpy(&ctx->vpu_header[0][0], vb2_plane_vaddr(buf, 0),
+ ctx->vpu_header_size[0]);
+
+ /*
+ * Get PPS in the first frame and copy it to an
+ * intermediate buffer.
+ */
+ coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START);
+ coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE);
+ coda_write(dev, CODA_HEADER_H264_PPS, CODA_CMD_ENC_HEADER_CODE);
+ if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) {
+ v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER timeout\n");
+ return -ETIMEDOUT;
+ }
+ ctx->vpu_header_size[1] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) -
+ coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
+ memcpy(&ctx->vpu_header[1][0], vb2_plane_vaddr(buf, 0),
+ ctx->vpu_header_size[1]);
+ ctx->vpu_header_size[2] = 0;
+ break;
+ case V4L2_PIX_FMT_MPEG4:
+ /*
+ * Get VOS in the first frame and copy it to an
+ * intermediate buffer
+ */
+ coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START);
+ coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE);
+ coda_write(dev, CODA_HEADER_MP4V_VOS, CODA_CMD_ENC_HEADER_CODE);
+ if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) {
+ v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER timeout\n");
+ return -ETIMEDOUT;
+ }
+ ctx->vpu_header_size[0] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) -
+ coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
+ memcpy(&ctx->vpu_header[0][0], vb2_plane_vaddr(buf, 0),
+ ctx->vpu_header_size[0]);
+
+ coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START);
+ coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE);
+ coda_write(dev, CODA_HEADER_MP4V_VIS, CODA_CMD_ENC_HEADER_CODE);
+ if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) {
+ v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER failed\n");
+ return -ETIMEDOUT;
+ }
+ ctx->vpu_header_size[1] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) -
+ coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
+ memcpy(&ctx->vpu_header[1][0], vb2_plane_vaddr(buf, 0),
+ ctx->vpu_header_size[1]);
+
+ coda_write(dev, vb2_dma_contig_plane_dma_addr(buf, 0), CODA_CMD_ENC_HEADER_BB_START);
+ coda_write(dev, bitstream_size, CODA_CMD_ENC_HEADER_BB_SIZE);
+ coda_write(dev, CODA_HEADER_MP4V_VOL, CODA_CMD_ENC_HEADER_CODE);
+ if (coda_command_sync(ctx, CODA_COMMAND_ENCODE_HEADER)) {
+ v4l2_err(v4l2_dev, "CODA_COMMAND_ENCODE_HEADER failed\n");
+ return -ETIMEDOUT;
+ }
+ ctx->vpu_header_size[2] = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx)) -
+ coda_read(dev, CODA_CMD_ENC_HEADER_BB_START);
+ memcpy(&ctx->vpu_header[2][0], vb2_plane_vaddr(buf, 0),
+ ctx->vpu_header_size[2]);
+ break;
+ default:
+ /* No more formats need to save headers at the moment */
+ break;
+ }
+
+ return 0;
+}
+
+static int coda_stop_streaming(struct vb2_queue *q)
+{
+ struct coda_ctx *ctx = vb2_get_drv_priv(q);
+
+ if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "%s: output\n", __func__);
+ ctx->rawstreamon = 0;
+ } else {
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "%s: capture\n", __func__);
+ ctx->compstreamon = 0;
+ }
+
+ if (!ctx->rawstreamon && !ctx->compstreamon) {
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "%s: sent command 'SEQ_END' to coda\n", __func__);
+ if (coda_command_sync(ctx, CODA_COMMAND_SEQ_END)) {
+ v4l2_err(&ctx->dev->v4l2_dev,
+ "CODA_COMMAND_SEQ_END failed\n");
+ return -ETIMEDOUT;
+ }
+ }
+
+ return 0;
+}
+
+static struct vb2_ops coda_qops = {
+ .queue_setup = coda_queue_setup,
+ .buf_prepare = coda_buf_prepare,
+ .buf_queue = coda_buf_queue,
+ .wait_prepare = coda_wait_prepare,
+ .wait_finish = coda_wait_finish,
+ .start_streaming = coda_start_streaming,
+ .stop_streaming = coda_stop_streaming,
+};
+
+static int coda_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct coda_ctx *ctx =
+ container_of(ctrl->handler, struct coda_ctx, ctrls);
+
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val);
+
+ switch (ctrl->id) {
+ case V4L2_CID_MPEG_VIDEO_BITRATE:
+ ctx->params.bitrate = ctrl->val / 1000;
+ break;
+ case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
+ ctx->params.gop_size = ctrl->val;
+ break;
+ case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
+ ctx->params.h264_intra_qp = ctrl->val;
+ break;
+ case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
+ ctx->params.h264_inter_qp = ctrl->val;
+ break;
+ case V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP:
+ ctx->params.mpeg4_intra_qp = ctrl->val;
+ break;
+ case V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP:
+ ctx->params.mpeg4_inter_qp = ctrl->val;
+ break;
+ case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE:
+ ctx->params.slice_mode = ctrl->val;
+ break;
+ case V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB:
+ ctx->params.slice_max_mb = ctrl->val;
+ break;
+ case V4L2_CID_MPEG_VIDEO_HEADER_MODE:
+ break;
+ default:
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "Invalid control, id=%d, val=%d\n",
+ ctrl->id, ctrl->val);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static struct v4l2_ctrl_ops coda_ctrl_ops = {
+ .s_ctrl = coda_s_ctrl,
+};
+
+static int coda_ctrls_setup(struct coda_ctx *ctx)
+{
+ v4l2_ctrl_handler_init(&ctx->ctrls, 9);
+
+ v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_BITRATE, 0, 32767000, 1, 0);
+ v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_GOP_SIZE, 1, 60, 1, 16);
+ v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP, 1, 51, 1, 25);
+ v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP, 1, 51, 1, 25);
+ v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_MPEG4_I_FRAME_QP, 1, 31, 1, 2);
+ v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_MPEG4_P_FRAME_QP, 1, 31, 1, 2);
+ v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MODE,
+ V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB, 0,
+ V4L2_MPEG_VIDEO_MULTI_SICE_MODE_MAX_MB);
+ v4l2_ctrl_new_std(&ctx->ctrls, &coda_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_MULTI_SLICE_MAX_MB, 1, 0x3fffffff, 1, 1);
+ v4l2_ctrl_new_std_menu(&ctx->ctrls, &coda_ctrl_ops,
+ V4L2_CID_MPEG_VIDEO_HEADER_MODE,
+ V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME,
+ (1 << V4L2_MPEG_VIDEO_HEADER_MODE_SEPARATE),
+ V4L2_MPEG_VIDEO_HEADER_MODE_JOINED_WITH_1ST_FRAME);
+
+ if (ctx->ctrls.error) {
+ v4l2_err(&ctx->dev->v4l2_dev, "control initialization error (%d)",
+ ctx->ctrls.error);
+ return -EINVAL;
+ }
+
+ return v4l2_ctrl_handler_setup(&ctx->ctrls);
+}
+
+static int coda_queue_init(void *priv, struct vb2_queue *src_vq,
+ struct vb2_queue *dst_vq)
+{
+ struct coda_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;
+ src_vq->drv_priv = ctx;
+ src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ src_vq->ops = &coda_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;
+ dst_vq->drv_priv = ctx;
+ dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
+ dst_vq->ops = &coda_qops;
+ dst_vq->mem_ops = &vb2_dma_contig_memops;
+
+ return vb2_queue_init(dst_vq);
+}
+
+static int coda_open(struct file *file)
+{
+ struct coda_dev *dev = video_drvdata(file);
+ struct coda_ctx *ctx = NULL;
+ int ret = 0;
+
+ if (dev->instances >= CODA_MAX_INSTANCES)
+ return -EBUSY;
+
+ ctx = kzalloc(sizeof *ctx, GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ v4l2_fh_init(&ctx->fh, video_devdata(file));
+ file->private_data = &ctx->fh;
+ v4l2_fh_add(&ctx->fh);
+ ctx->dev = dev;
+
+ set_default_params(ctx);
+ ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx,
+ &coda_queue_init);
+ if (IS_ERR(ctx->m2m_ctx)) {
+ int ret = PTR_ERR(ctx->m2m_ctx);
+
+ v4l2_err(&dev->v4l2_dev, "%s return error (%d)\n",
+ __func__, ret);
+ goto err;
+ }
+ ret = coda_ctrls_setup(ctx);
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev, "failed to setup coda controls\n");
+ goto err;
+ }
+
+ ctx->fh.ctrl_handler = &ctx->ctrls;
+
+ ctx->parabuf.vaddr = dma_alloc_coherent(&dev->plat_dev->dev,
+ CODA_PARA_BUF_SIZE, &ctx->parabuf.paddr, GFP_KERNEL);
+ if (!ctx->parabuf.vaddr) {
+ v4l2_err(&dev->v4l2_dev, "failed to allocate parabuf");
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ coda_lock(ctx);
+ ctx->idx = dev->instances++;
+ coda_unlock(ctx);
+
+ clk_prepare_enable(dev->clk_per);
+ clk_prepare_enable(dev->clk_ahb);
+
+ v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Created instance %d (%p)\n",
+ ctx->idx, ctx);
+
+ return 0;
+
+err:
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ kfree(ctx);
+ return ret;
+}
+
+static int coda_release(struct file *file)
+{
+ struct coda_dev *dev = video_drvdata(file);
+ struct coda_ctx *ctx = fh_to_ctx(file->private_data);
+
+ v4l2_dbg(1, coda_debug, &dev->v4l2_dev, "Releasing instance %p\n",
+ ctx);
+
+ coda_lock(ctx);
+ dev->instances--;
+ coda_unlock(ctx);
+
+ dma_free_coherent(&dev->plat_dev->dev, CODA_PARA_BUF_SIZE,
+ ctx->parabuf.vaddr, ctx->parabuf.paddr);
+ v4l2_m2m_ctx_release(ctx->m2m_ctx);
+ v4l2_ctrl_handler_free(&ctx->ctrls);
+ clk_disable_unprepare(dev->clk_per);
+ clk_disable_unprepare(dev->clk_ahb);
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ kfree(ctx);
+
+ return 0;
+}
+
+static unsigned int coda_poll(struct file *file,
+ struct poll_table_struct *wait)
+{
+ struct coda_ctx *ctx = fh_to_ctx(file->private_data);
+ int ret;
+
+ coda_lock(ctx);
+ ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
+ coda_unlock(ctx);
+ return ret;
+}
+
+static int coda_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct coda_ctx *ctx = fh_to_ctx(file->private_data);
+
+ return v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
+}
+
+static const struct v4l2_file_operations coda_fops = {
+ .owner = THIS_MODULE,
+ .open = coda_open,
+ .release = coda_release,
+ .poll = coda_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = coda_mmap,
+};
+
+static irqreturn_t coda_irq_handler(int irq, void *data)
+{
+ struct vb2_buffer *src_buf, *dst_buf, *tmp_buf;
+ struct coda_dev *dev = data;
+ u32 wr_ptr, start_ptr;
+ struct coda_ctx *ctx;
+
+ /* read status register to attend the IRQ */
+ coda_read(dev, CODA_REG_BIT_INT_STATUS);
+ coda_write(dev, CODA_REG_BIT_INT_CLEAR_SET,
+ CODA_REG_BIT_INT_CLEAR);
+
+ ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev);
+ if (ctx == NULL) {
+ v4l2_err(&dev->v4l2_dev, "Instance released before the end of transaction\n");
+ return IRQ_HANDLED;
+ }
+
+ if (ctx->aborting) {
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "task has been aborted\n");
+ return IRQ_HANDLED;
+ }
+
+ if (coda_isbusy(ctx->dev)) {
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev,
+ "coda is still busy!!!!\n");
+ return IRQ_NONE;
+ }
+
+ src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx);
+
+ /* Get results from the coda */
+ coda_read(dev, CODA_RET_ENC_PIC_TYPE);
+ start_ptr = coda_read(dev, CODA_CMD_ENC_PIC_BB_START);
+ wr_ptr = coda_read(dev, CODA_REG_BIT_WR_PTR(ctx->idx));
+ /* Calculate bytesused field */
+ if (dst_buf->v4l2_buf.sequence == 0) {
+ dst_buf->v4l2_planes[0].bytesused = (wr_ptr - start_ptr) +
+ ctx->vpu_header_size[0] +
+ ctx->vpu_header_size[1] +
+ ctx->vpu_header_size[2];
+ } else {
+ dst_buf->v4l2_planes[0].bytesused = (wr_ptr - start_ptr);
+ }
+
+ v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "frame size = %u\n",
+ wr_ptr - start_ptr);
+
+ coda_read(dev, CODA_RET_ENC_PIC_SLICE_NUM);
+ coda_read(dev, CODA_RET_ENC_PIC_FLAG);
+
+ if (src_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) {
+ dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_KEYFRAME;
+ dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_PFRAME;
+ } else {
+ dst_buf->v4l2_buf.flags |= V4L2_BUF_FLAG_PFRAME;
+ dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME;
+ }
+
+ /* Free previous reference picture if available */
+ if (ctx->reference) {
+ v4l2_m2m_buf_done(ctx->reference, VB2_BUF_STATE_DONE);
+ ctx->reference = NULL;
+ }
+
+ /*
+ * For the last frame of the gop we don't need to save
+ * a reference picture.
+ */
+ v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
+ tmp_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
+ if (ctx->gopcounter == 0)
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
+ else
+ ctx->reference = tmp_buf;
+
+ v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
+
+ ctx->gopcounter--;
+ if (ctx->gopcounter < 0)
+ ctx->gopcounter = ctx->params.gop_size - 1;
+
+ v4l2_dbg(1, coda_debug, &dev->v4l2_dev,
+ "job finished: encoding frame (%d) (%s)\n",
+ dst_buf->v4l2_buf.sequence,
+ (dst_buf->v4l2_buf.flags & V4L2_BUF_FLAG_KEYFRAME) ?
+ "KEYFRAME" : "PFRAME");
+
+ v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->m2m_ctx);
+
+ return IRQ_HANDLED;
+}
+
+static u32 coda_supported_firmwares[] = {
+ CODA_FIRMWARE_VERNUM(CODA_DX6, 2, 2, 5),
+};
+
+static bool coda_firmware_supported(u32 vernum)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(coda_supported_firmwares); i++)
+ if (vernum == coda_supported_firmwares[i])
+ return true;
+ return false;
+}
+
+static char *coda_product_name(int product)
+{
+ static char buf[9];
+
+ switch (product) {
+ case CODA_DX6:
+ return "CodaDx6";
+ default:
+ snprintf(buf, sizeof(buf), "(0x%04x)", product);
+ return buf;
+ }
+}
+
+static int coda_hw_init(struct coda_dev *dev, const struct firmware *fw)
+{
+ u16 product, major, minor, release;
+ u32 data;
+ u16 *p;
+ int i;
+
+ clk_prepare_enable(dev->clk_per);
+ clk_prepare_enable(dev->clk_ahb);
+
+ /* Copy the whole firmware image to the code buffer */
+ memcpy(dev->codebuf.vaddr, fw->data, fw->size);
+ /*
+ * Copy the first CODA_ISRAM_SIZE in the internal SRAM.
+ * This memory seems to be big-endian here, which is weird, since
+ * the internal ARM processor of the coda is little endian.
+ * Data in this SRAM survives a reboot.
+ */
+ p = (u16 *)fw->data;
+ for (i = 0; i < (CODA_ISRAM_SIZE / 2); i++) {
+ data = CODA_DOWN_ADDRESS_SET(i) |
+ CODA_DOWN_DATA_SET(p[i ^ 1]);
+ coda_write(dev, data, CODA_REG_BIT_CODE_DOWN);
+ }
+ release_firmware(fw);
+
+ /* Tell the BIT where to find everything it needs */
+ coda_write(dev, dev->workbuf.paddr,
+ CODA_REG_BIT_WORK_BUF_ADDR);
+ coda_write(dev, dev->codebuf.paddr,
+ CODA_REG_BIT_CODE_BUF_ADDR);
+ coda_write(dev, 0, CODA_REG_BIT_CODE_RUN);
+
+ /* Set default values */
+ switch (dev->devtype->product) {
+ case CODA_DX6:
+ coda_write(dev, CODADX6_STREAM_BUF_PIC_FLUSH, CODA_REG_BIT_STREAM_CTRL);
+ break;
+ default:
+ coda_write(dev, CODA7_STREAM_BUF_PIC_FLUSH, CODA_REG_BIT_STREAM_CTRL);
+ }
+ coda_write(dev, 0, CODA_REG_BIT_FRAME_MEM_CTRL);
+ coda_write(dev, CODA_INT_INTERRUPT_ENABLE,
+ CODA_REG_BIT_INT_ENABLE);
+
+ /* Reset VPU and start processor */
+ data = coda_read(dev, CODA_REG_BIT_CODE_RESET);
+ data |= CODA_REG_RESET_ENABLE;
+ coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
+ udelay(10);
+ data &= ~CODA_REG_RESET_ENABLE;
+ coda_write(dev, data, CODA_REG_BIT_CODE_RESET);
+ coda_write(dev, CODA_REG_RUN_ENABLE, CODA_REG_BIT_CODE_RUN);
+
+ /* Load firmware */
+ coda_write(dev, 0, CODA_CMD_FIRMWARE_VERNUM);
+ coda_write(dev, CODA_REG_BIT_BUSY_FLAG, CODA_REG_BIT_BUSY);
+ coda_write(dev, 0, CODA_REG_BIT_RUN_INDEX);
+ coda_write(dev, 0, CODA_REG_BIT_RUN_COD_STD);
+ coda_write(dev, CODA_COMMAND_FIRMWARE_GET, CODA_REG_BIT_RUN_COMMAND);
+ if (coda_wait_timeout(dev)) {
+ clk_disable_unprepare(dev->clk_per);
+ clk_disable_unprepare(dev->clk_ahb);
+ v4l2_err(&dev->v4l2_dev, "firmware get command error\n");
+ return -EIO;
+ }
+
+ /* Check we are compatible with the loaded firmware */
+ data = coda_read(dev, CODA_CMD_FIRMWARE_VERNUM);
+ product = CODA_FIRMWARE_PRODUCT(data);
+ major = CODA_FIRMWARE_MAJOR(data);
+ minor = CODA_FIRMWARE_MINOR(data);
+ release = CODA_FIRMWARE_RELEASE(data);
+
+ clk_disable_unprepare(dev->clk_per);
+ clk_disable_unprepare(dev->clk_ahb);
+
+ if (product != dev->devtype->product) {
+ v4l2_err(&dev->v4l2_dev, "Wrong firmware. Hw: %s, Fw: %s,"
+ " Version: %u.%u.%u\n",
+ coda_product_name(dev->devtype->product),
+ coda_product_name(product), major, minor, release);
+ return -EINVAL;
+ }
+
+ v4l2_info(&dev->v4l2_dev, "Initialized %s.\n",
+ coda_product_name(product));
+
+ if (coda_firmware_supported(data)) {
+ v4l2_info(&dev->v4l2_dev, "Firmware version: %u.%u.%u\n",
+ major, minor, release);
+ } else {
+ v4l2_warn(&dev->v4l2_dev, "Unsupported firmware version: "
+ "%u.%u.%u\n", major, minor, release);
+ }
+
+ return 0;
+}
+
+static void coda_fw_callback(const struct firmware *fw, void *context)
+{
+ struct coda_dev *dev = context;
+ struct platform_device *pdev = dev->plat_dev;
+ int ret;
+
+ if (!fw) {
+ v4l2_err(&dev->v4l2_dev, "firmware request failed\n");
+ return;
+ }
+
+ /* allocate auxiliary per-device code buffer for the BIT processor */
+ dev->codebuf.size = fw->size;
+ dev->codebuf.vaddr = dma_alloc_coherent(&pdev->dev, fw->size,
+ &dev->codebuf.paddr,
+ GFP_KERNEL);
+ if (!dev->codebuf.vaddr) {
+ dev_err(&pdev->dev, "failed to allocate code buffer\n");
+ return;
+ }
+
+ ret = coda_hw_init(dev, fw);
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev, "HW initialization failed\n");
+ return;
+ }
+
+ dev->vfd.fops = &coda_fops,
+ dev->vfd.ioctl_ops = &coda_ioctl_ops;
+ dev->vfd.release = video_device_release_empty,
+ dev->vfd.lock = &dev->dev_mutex;
+ dev->vfd.v4l2_dev = &dev->v4l2_dev;
+ snprintf(dev->vfd.name, sizeof(dev->vfd.name), "%s", CODA_NAME);
+ video_set_drvdata(&dev->vfd, dev);
+
+ dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
+ if (IS_ERR(dev->alloc_ctx)) {
+ v4l2_err(&dev->v4l2_dev, "Failed to alloc vb2 context\n");
+ return;
+ }
+
+ dev->m2m_dev = v4l2_m2m_init(&coda_m2m_ops);
+ if (IS_ERR(dev->m2m_dev)) {
+ v4l2_err(&dev->v4l2_dev, "Failed to init mem2mem device\n");
+ goto rel_ctx;
+ }
+
+ ret = video_register_device(&dev->vfd, VFL_TYPE_GRABBER, 0);
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
+ goto rel_m2m;
+ }
+ v4l2_info(&dev->v4l2_dev, "codec registered as /dev/video%d\n",
+ dev->vfd.num);
+
+ return;
+
+rel_m2m:
+ v4l2_m2m_release(dev->m2m_dev);
+rel_ctx:
+ vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
+}
+
+static int coda_firmware_request(struct coda_dev *dev)
+{
+ char *fw = dev->devtype->firmware;
+
+ dev_dbg(&dev->plat_dev->dev, "requesting firmware '%s' for %s\n", fw,
+ coda_product_name(dev->devtype->product));
+
+ return request_firmware_nowait(THIS_MODULE, true,
+ fw, &dev->plat_dev->dev, GFP_KERNEL, dev, coda_fw_callback);
+}
+
+enum coda_platform {
+ CODA_IMX27,
+};
+
+static struct coda_devtype coda_devdata[] = {
+ [CODA_IMX27] = {
+ .firmware = "v4l-codadx6-imx27.bin",
+ .product = CODA_DX6,
+ .formats = codadx6_formats,
+ .num_formats = ARRAY_SIZE(codadx6_formats),
+ },
+};
+
+static struct platform_device_id coda_platform_ids[] = {
+ { .name = "coda-imx27", .driver_data = CODA_IMX27 },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, coda_platform_ids);
+
+#ifdef CONFIG_OF
+static const struct of_device_id coda_dt_ids[] = {
+ { .compatible = "fsl,imx27-vpu", .data = &coda_platform_ids[CODA_IMX27] },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, coda_dt_ids);
+#endif
+
+static int __devinit coda_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *of_id =
+ of_match_device(of_match_ptr(coda_dt_ids), &pdev->dev);
+ const struct platform_device_id *pdev_id;
+ struct coda_dev *dev;
+ struct resource *res;
+ int ret, irq;
+
+ dev = devm_kzalloc(&pdev->dev, sizeof *dev, GFP_KERNEL);
+ if (!dev) {
+ dev_err(&pdev->dev, "Not enough memory for %s\n",
+ CODA_NAME);
+ return -ENOMEM;
+ }
+
+ spin_lock_init(&dev->irqlock);
+
+ dev->plat_dev = pdev;
+ dev->clk_per = devm_clk_get(&pdev->dev, "per");
+ if (IS_ERR(dev->clk_per)) {
+ dev_err(&pdev->dev, "Could not get per clock\n");
+ return PTR_ERR(dev->clk_per);
+ }
+
+ dev->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
+ if (IS_ERR(dev->clk_ahb)) {
+ dev_err(&pdev->dev, "Could not get ahb clock\n");
+ return PTR_ERR(dev->clk_ahb);
+ }
+
+ /* Get memory for physical registers */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "failed to get memory region resource\n");
+ return -ENOENT;
+ }
+
+ if (devm_request_mem_region(&pdev->dev, res->start,
+ resource_size(res), CODA_NAME) == NULL) {
+ dev_err(&pdev->dev, "failed to request memory region\n");
+ return -ENOENT;
+ }
+ dev->regs_base = devm_ioremap(&pdev->dev, res->start,
+ resource_size(res));
+ if (!dev->regs_base) {
+ dev_err(&pdev->dev, "failed to ioremap address region\n");
+ return -ENOENT;
+ }
+
+ /* IRQ */
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "failed to get irq resource\n");
+ return -ENOENT;
+ }
+
+ if (devm_request_irq(&pdev->dev, irq, coda_irq_handler,
+ 0, CODA_NAME, dev) < 0) {
+ dev_err(&pdev->dev, "failed to request irq\n");
+ return -ENOENT;
+ }
+
+ ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
+ if (ret)
+ return ret;
+
+ mutex_init(&dev->dev_mutex);
+
+ pdev_id = of_id ? of_id->data : platform_get_device_id(pdev);
+
+ if (of_id) {
+ dev->devtype = of_id->data;
+ } else if (pdev_id) {
+ dev->devtype = &coda_devdata[pdev_id->driver_data];
+ } else {
+ v4l2_device_unregister(&dev->v4l2_dev);
+ return -EINVAL;
+ }
+
+ /* allocate auxiliary per-device buffers for the BIT processor */
+ switch (dev->devtype->product) {
+ case CODA_DX6:
+ dev->workbuf.size = CODADX6_WORK_BUF_SIZE;
+ break;
+ default:
+ dev->workbuf.size = CODA7_WORK_BUF_SIZE;
+ }
+ dev->workbuf.vaddr = dma_alloc_coherent(&pdev->dev, dev->workbuf.size,
+ &dev->workbuf.paddr,
+ GFP_KERNEL);
+ if (!dev->workbuf.vaddr) {
+ dev_err(&pdev->dev, "failed to allocate work buffer\n");
+ v4l2_device_unregister(&dev->v4l2_dev);
+ return -ENOMEM;
+ }
+
+ platform_set_drvdata(pdev, dev);
+
+ return coda_firmware_request(dev);
+}
+
+static int coda_remove(struct platform_device *pdev)
+{
+ struct coda_dev *dev = platform_get_drvdata(pdev);
+
+ video_unregister_device(&dev->vfd);
+ if (dev->m2m_dev)
+ v4l2_m2m_release(dev->m2m_dev);
+ if (dev->alloc_ctx)
+ vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
+ v4l2_device_unregister(&dev->v4l2_dev);
+ if (dev->codebuf.vaddr)
+ dma_free_coherent(&pdev->dev, dev->codebuf.size,
+ &dev->codebuf.vaddr, dev->codebuf.paddr);
+ if (dev->workbuf.vaddr)
+ dma_free_coherent(&pdev->dev, dev->workbuf.size, &dev->workbuf.vaddr,
+ dev->workbuf.paddr);
+ return 0;
+}
+
+static struct platform_driver coda_driver = {
+ .probe = coda_probe,
+ .remove = __devexit_p(coda_remove),
+ .driver = {
+ .name = CODA_NAME,
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(coda_dt_ids),
+ },
+ .id_table = coda_platform_ids,
+};
+
+module_platform_driver(coda_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Javier Martin <javier.martin@vista-silicon.com>");
+MODULE_DESCRIPTION("Coda multi-standard codec V4L2 driver");

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