[PATCH] [media] tw5864: crop picture width to 704

[Andrey Utkin]

Previously, width of 720 was used, but it gives 16-pixel wide black bar
at right side of encoded picture.

Signed-off-by: Andrey Utkin <andrey.ut...@corp.bluecherry.net>
---
 drivers/media/pci/tw5864/tw5864-reg.h   |  8 ++++++++
 drivers/media/pci/tw5864/tw5864-video.c | 13 +++++++++++--
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/media/pci/tw5864/tw5864-reg.h 
b/drivers/media/pci/tw5864/tw5864-reg.h
index 92a1b07..30ac142 100644
--- a/drivers/media/pci/tw5864/tw5864-reg.h
+++ b/drivers/media/pci/tw5864/tw5864-reg.h
@@ -1879,6 +1879,14 @@
 #define TW5864_INDIR_IN_PIC_HEIGHT(channel) (0x201 + 4 * channel)
 #define TW5864_INDIR_OUT_PIC_WIDTH(channel) (0x202 + 4 * channel)
 #define TW5864_INDIR_OUT_PIC_HEIGHT(channel) (0x203 + 4 * channel)
+
+/* Some registers skipped */
+
+#define TW5864_INDIR_CROP_ETC 0x260
+/* Define controls in register TW5864_INDIR_CROP_ETC */
+/* Enable cropping from 720 to 704 */
+#define TW5864_INDIR_CROP_ETC_CROP_EN 0x4
+
 /*
  * Interrupt status register from the front-end. Write "1" to each bit to clear
  * the interrupt
diff --git a/drivers/media/pci/tw5864/tw5864-video.c 
b/drivers/media/pci/tw5864/tw5864-video.c
index ff94e6c..3c8c302 100644
--- a/drivers/media/pci/tw5864/tw5864-video.c
+++ b/drivers/media/pci/tw5864/tw5864-video.c
@@ -590,6 +590,15 @@ static int tw5864_enable_input(struct tw5864_input *input)
        tw_indir_writeb(TW5864_INDIR_OUT_PIC_WIDTH(nr), input->width / 4);
        tw_indir_writeb(TW5864_INDIR_OUT_PIC_HEIGHT(nr), input->height / 4);
 
+       /*
+        * Crop width from 720 to 704.
+        * Above register settings need value 720 involved.
+        */
+       input->width = 704;
+       tw_indir_writeb(TW5864_INDIR_CROP_ETC,
+                       tw_indir_readb(TW5864_INDIR_CROP_ETC) |
+                       TW5864_INDIR_CROP_ETC_CROP_EN);
+
        tw_writel(TW5864_DSP_PIC_MAX_MB,
                  ((input->width / 16) << 8) | (input->height / 16));
 
@@ -792,7 +801,7 @@ static int tw5864_fmt_vid_cap(struct file *file, void *priv,
 {
        struct tw5864_input *input = video_drvdata(file);
 
-       f->fmt.pix.width = 720;
+       f->fmt.pix.width = 704;
        switch (input->std) {
        default:
                WARN_ON_ONCE(1);
@@ -998,7 +1007,7 @@ static int tw5864_enum_framesizes(struct file *file, void 
*priv,
                return -EINVAL;
 
        fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
-       fsize->discrete.width = 720;
+       fsize->discrete.width = 704;
        fsize->discrete.height = input->std == STD_NTSC ? 480 : 576;
 
        return 0;
-- 
2.9.2

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