V4L/DVB (10084): sh_mobile_ceu: add NV12 and NV21 support
This patch adds NV12/NV21 support to the sh_mobile_ceu driver. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Magnus Damm
Mauro Carvalho Chehab
parent
1c3bb7431d
commit
8be65dc596
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@ -96,6 +96,8 @@ struct sh_mobile_ceu_dev {
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struct videobuf_buffer *active;
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struct sh_mobile_ceu_info *pdata;
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const struct soc_camera_data_format *camera_fmt;
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};
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static void ceu_write(struct sh_mobile_ceu_dev *priv,
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@ -155,6 +157,9 @@ static void free_buffer(struct videobuf_queue *vq,
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static void sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev)
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{
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struct soc_camera_device *icd = pcdev->icd;
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unsigned long phys_addr;
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ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~1);
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ceu_write(pcdev, CETCR, ~ceu_read(pcdev, CETCR) & 0x0317f313);
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ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | 1);
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@ -163,11 +168,21 @@ static void sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev)
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ceu_write(pcdev, CETCR, 0x0317f313 ^ 0x10);
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if (pcdev->active) {
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pcdev->active->state = VIDEOBUF_ACTIVE;
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ceu_write(pcdev, CDAYR, videobuf_to_dma_contig(pcdev->active));
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ceu_write(pcdev, CAPSR, 0x1); /* start capture */
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if (!pcdev->active)
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return;
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phys_addr = videobuf_to_dma_contig(pcdev->active);
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ceu_write(pcdev, CDAYR, phys_addr);
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switch (icd->current_fmt->fourcc) {
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case V4L2_PIX_FMT_NV12:
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case V4L2_PIX_FMT_NV21:
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phys_addr += (icd->width * icd->height);
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ceu_write(pcdev, CDACR, phys_addr);
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}
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pcdev->active->state = VIDEOBUF_ACTIVE;
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ceu_write(pcdev, CAPSR, 0x1); /* start capture */
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}
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static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq,
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@ -359,6 +374,7 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
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struct sh_mobile_ceu_dev *pcdev = ici->priv;
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int ret, buswidth, width, cfszr_width, cdwdr_width;
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unsigned long camera_flags, common_flags, value;
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int yuv_mode, yuv_lineskip;
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camera_flags = icd->ops->query_bus_param(icd);
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common_flags = soc_camera_bus_param_compatible(camera_flags,
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@ -384,7 +400,35 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
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ceu_write(pcdev, CRCNTR, 0);
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ceu_write(pcdev, CRCMPR, 0);
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value = 0x00000010;
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value = 0x00000010; /* data fetch by default */
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yuv_mode = yuv_lineskip = 0;
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switch (icd->current_fmt->fourcc) {
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case V4L2_PIX_FMT_NV12:
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case V4L2_PIX_FMT_NV21:
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yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */
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yuv_mode = 1;
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switch (pcdev->camera_fmt->fourcc) {
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case V4L2_PIX_FMT_UYVY:
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value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */
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break;
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case V4L2_PIX_FMT_VYUY:
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value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */
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break;
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case V4L2_PIX_FMT_YUYV:
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value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */
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break;
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case V4L2_PIX_FMT_YVYU:
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value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */
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break;
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default:
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BUG();
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}
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}
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if (icd->current_fmt->fourcc == V4L2_PIX_FMT_NV21)
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value ^= 0x00000100; /* swap U, V to change from NV12->NV21 */
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value |= (common_flags & SOCAM_VSYNC_ACTIVE_LOW) ? (1 << 1) : 0;
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value |= (common_flags & SOCAM_HSYNC_ACTIVE_LOW) ? (1 << 0) : 0;
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value |= (buswidth == 16) ? (1 << 12) : 0;
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@ -395,16 +439,22 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
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mdelay(1);
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width = icd->width * (icd->current_fmt->depth / 8);
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width = (buswidth == 16) ? width / 2 : width;
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cfszr_width = (buswidth == 8) ? width / 2 : width;
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cdwdr_width = (buswidth == 16) ? width * 2 : width;
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if (yuv_mode) {
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width = icd->width * 2;
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width = (buswidth == 16) ? width / 2 : width;
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cfszr_width = cdwdr_width = icd->width;
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} else {
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width = icd->width * ((icd->current_fmt->depth + 7) >> 3);
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width = (buswidth == 16) ? width / 2 : width;
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cfszr_width = (buswidth == 8) ? width / 2 : width;
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cdwdr_width = (buswidth == 16) ? width * 2 : width;
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}
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ceu_write(pcdev, CAMOR, 0);
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ceu_write(pcdev, CAPWR, (icd->height << 16) | width);
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ceu_write(pcdev, CFLCR, 0); /* data fetch mode - no scaling */
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ceu_write(pcdev, CFLCR, 0); /* no scaling */
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ceu_write(pcdev, CFSZR, (icd->height << 16) | cfszr_width);
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ceu_write(pcdev, CLFCR, 0); /* data fetch mode - no lowpass filter */
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ceu_write(pcdev, CLFCR, 0); /* no lowpass filter */
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/* A few words about byte order (observed in Big Endian mode)
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*
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@ -418,14 +468,16 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
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* using 7 we swap the data bytes to match the incoming order:
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* D0, D1, D2, D3, D4, D5, D6, D7
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*/
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ceu_write(pcdev, CDOCR, 0x00000017);
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value = 0x00000017;
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if (yuv_lineskip)
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value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */
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ceu_write(pcdev, CDOCR, value);
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ceu_write(pcdev, CDWDR, cdwdr_width);
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ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */
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/* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */
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/* in data fetch mode: no need for CDACR, CDBYR, CDBCR */
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return 0;
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}
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@ -444,11 +496,26 @@ static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd)
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return 0;
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}
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static const struct soc_camera_data_format sh_mobile_ceu_formats[] = {
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{
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.name = "NV12",
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.depth = 12,
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.fourcc = V4L2_PIX_FMT_NV12,
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.colorspace = V4L2_COLORSPACE_JPEG,
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},
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{
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.name = "NV21",
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.depth = 12,
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.fourcc = V4L2_PIX_FMT_NV21,
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.colorspace = V4L2_COLORSPACE_JPEG,
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},
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};
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static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx,
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struct soc_camera_format_xlate *xlate)
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{
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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int ret;
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int ret, k, n;
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int formats = 0;
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ret = sh_mobile_ceu_try_bus_param(icd);
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@ -456,6 +523,21 @@ static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx,
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return 0;
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switch (icd->formats[idx].fourcc) {
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case V4L2_PIX_FMT_UYVY:
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case V4L2_PIX_FMT_VYUY:
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case V4L2_PIX_FMT_YUYV:
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case V4L2_PIX_FMT_YVYU:
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n = ARRAY_SIZE(sh_mobile_ceu_formats);
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formats += n;
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for (k = 0; xlate && k < n; k++) {
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xlate->host_fmt = &sh_mobile_ceu_formats[k];
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xlate->cam_fmt = icd->formats + idx;
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xlate->buswidth = icd->formats[idx].depth;
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xlate++;
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dev_dbg(&ici->dev, "Providing format %s using %s\n",
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sh_mobile_ceu_formats[k].name,
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icd->formats[idx].name);
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}
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default:
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/* Generic pass-through */
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formats++;
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@ -477,6 +559,7 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd,
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__u32 pixfmt, struct v4l2_rect *rect)
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{
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct sh_mobile_ceu_dev *pcdev = ici->priv;
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const struct soc_camera_format_xlate *xlate;
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int ret;
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@ -497,6 +580,7 @@ static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd,
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if (pixfmt && !ret) {
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icd->buswidth = xlate->buswidth;
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icd->current_fmt = xlate->host_fmt;
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pcdev->camera_fmt = xlate->cam_fmt;
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}
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return ret;
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