media: usbtv: Use same decoder sequence as Windows driver

Re-format the register {address, value} pairs so they follow the same
order as the decoder configuration sequences in the Windows driver's .INF
file.

For instance, for PAL, the "AVPAL" sequence in the .INF file is:
0x04,0x68,0xD3,0x72,0xA2,0xB0,0x15,0x01,0x2C,0x10,0x20,0x2e,0x08,0x02,
0x02,0x59,0x16,0x35,0x17,0x16,0x36

Signed-off-by: Hugo Grostabussiat <bonstra@bonstra.fr.eu.org>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c
index 3668a04..97f9790 100644 (file)
--- a/drivers/media/usb/usbtv/usbtv-video.c
+++ b/drivers/media/usb/usbtv/usbtv-video.c
@@ -124,40 +124,67 @@ static int usbtv_select_input(struct usbtv *usbtv, int input)
 static int usbtv_select_norm(struct usbtv *usbtv, v4l2_std_id norm)
 {
        int ret;
+       /* These are the series of register values used to configure the
+        * decoder for a specific standard.
+        * The first 21 register writes are copied from the
+        * Settings\DecoderDefaults registry keys present in the Windows driver
+        * .INF file, and control various image tuning parameters (color
+        * correction, sharpness, ...).
+        */
        static const u16 pal[][2] = {
+               /* "AVPAL" tuning sequence from .INF file */
+               { USBTV_BASE + 0x0003, 0x0004 },
                { USBTV_BASE + 0x001a, 0x0068 },
+               { USBTV_BASE + 0x0100, 0x00d3 },
                { USBTV_BASE + 0x010e, 0x0072 },
                { USBTV_BASE + 0x010f, 0x00a2 },
                { USBTV_BASE + 0x0112, 0x00b0 },
+               { USBTV_BASE + 0x0115, 0x0015 },
                { USBTV_BASE + 0x0117, 0x0001 },
                { USBTV_BASE + 0x0118, 0x002c },
                { USBTV_BASE + 0x012d, 0x0010 },
                { USBTV_BASE + 0x012f, 0x0020 },
+               { USBTV_BASE + 0x0220, 0x002e },
+               { USBTV_BASE + 0x0225, 0x0008 },
+               { USBTV_BASE + 0x024e, 0x0002 },
                { USBTV_BASE + 0x024f, 0x0002 },
                { USBTV_BASE + 0x0254, 0x0059 },
                { USBTV_BASE + 0x025a, 0x0016 },
                { USBTV_BASE + 0x025b, 0x0035 },
                { USBTV_BASE + 0x0263, 0x0017 },
                { USBTV_BASE + 0x0266, 0x0016 },
-               { USBTV_BASE + 0x0267, 0x0036 }
+               { USBTV_BASE + 0x0267, 0x0036 },
+               /* Epilog */
+               { USBTV_BASE + 0x024e, 0x0002 },
+               { USBTV_BASE + 0x024f, 0x0002 },
        };
 
        static const u16 ntsc[][2] = {
+               /* "AVNTSC" tuning sequence from .INF file */
+               { USBTV_BASE + 0x0003, 0x0004 },
                { USBTV_BASE + 0x001a, 0x0079 },
+               { USBTV_BASE + 0x0100, 0x00d3 },
                { USBTV_BASE + 0x010e, 0x0068 },
                { USBTV_BASE + 0x010f, 0x009c },
                { USBTV_BASE + 0x0112, 0x00f0 },
+               { USBTV_BASE + 0x0115, 0x0015 },
                { USBTV_BASE + 0x0117, 0x0000 },
                { USBTV_BASE + 0x0118, 0x00fc },
                { USBTV_BASE + 0x012d, 0x0004 },
                { USBTV_BASE + 0x012f, 0x0008 },
+               { USBTV_BASE + 0x0220, 0x002e },
+               { USBTV_BASE + 0x0225, 0x0008 },
+               { USBTV_BASE + 0x024e, 0x0002 },
                { USBTV_BASE + 0x024f, 0x0001 },
                { USBTV_BASE + 0x0254, 0x005f },
                { USBTV_BASE + 0x025a, 0x0012 },
                { USBTV_BASE + 0x025b, 0x0001 },
                { USBTV_BASE + 0x0263, 0x001c },
                { USBTV_BASE + 0x0266, 0x0011 },
-               { USBTV_BASE + 0x0267, 0x0005 }
+               { USBTV_BASE + 0x0267, 0x0005 },
+               /* Epilog */
+               { USBTV_BASE + 0x024e, 0x0002 },
+               { USBTV_BASE + 0x024f, 0x0002 },
        };
 
        ret = usbtv_configure_for_norm(usbtv, norm);
@@ -236,15 +263,6 @@ static int usbtv_setup_capture(struct usbtv *usbtv)
                { USBTV_BASE + 0x0158, 0x001f },
                { USBTV_BASE + 0x0159, 0x0006 },
                { USBTV_BASE + 0x015d, 0x0000 },
-
-               { USBTV_BASE + 0x0003, 0x0004 },
-               { USBTV_BASE + 0x0100, 0x00d3 },
-               { USBTV_BASE + 0x0115, 0x0015 },
-               { USBTV_BASE + 0x0220, 0x002e },
-               { USBTV_BASE + 0x0225, 0x0008 },
-               { USBTV_BASE + 0x024e, 0x0002 },
-               { USBTV_BASE + 0x024e, 0x0002 },
-               { USBTV_BASE + 0x024f, 0x0002 },
        };
 
        ret = usbtv_set_regs(usbtv, setup, ARRAY_SIZE(setup));