V4L/DVB (4067): Fixed cx25840 to work with PAL/M

Sub-carrier frequency for PAL/M is slicely different than NTSC/M.
Without this patch, colors don't work on PAL/M.
Setting method also improved to allow other video standards to be included.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c
index 6d7207e..cb9e862 100644 (file)
--- a/drivers/media/video/cx25840/cx25840-core.c
+++ b/drivers/media/video/cx25840/cx25840-core.c
@@ -46,7 +46,7 @@ MODULE_LICENSE("GPL");
 static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END };
 
 
-static int cx25840_debug;
+int cx25840_debug;
 
 module_param_named(debug,cx25840_debug, int, 0644);
 
@@ -251,17 +251,7 @@ static void input_change(struct i2c_client *client)
        cx25840_and_or(client, 0x401, ~0x60, 0);
        cx25840_and_or(client, 0x401, ~0x60, 0x60);
 
-       /* Note: perhaps V4L2_STD_PAL_M should be handled as V4L2_STD_NTSC
-          instead of V4L2_STD_PAL. Someone needs to test this. */
-       if (std & V4L2_STD_PAL) {
-               /* Follow tuner change procedure for PAL */
-               cx25840_write(client, 0x808, 0xff);
-               cx25840_write(client, 0x80b, 0x10);
-       } else if (std & V4L2_STD_SECAM) {
-               /* Select autodetect for SECAM */
-               cx25840_write(client, 0x808, 0xff);
-               cx25840_write(client, 0x80b, 0x10);
-       } else if (std & V4L2_STD_NTSC) {
+       if (std & V4L2_STD_525_60) {
                /* Certain Hauppauge PVR150 models have a hardware bug
                   that causes audio to drop out. For these models the
                   audio standard must be set explicitly.
@@ -280,6 +270,14 @@ static void input_change(struct i2c_client *client)
                        cx25840_write(client, 0x808, hw_fix ? 0x1f : 0xf6);
                }
                cx25840_write(client, 0x80b, 0x00);
+       } else if (std & V4L2_STD_PAL) {
+               /* Follow tuner change procedure for PAL */
+               cx25840_write(client, 0x808, 0xff);
+               cx25840_write(client, 0x80b, 0x10);
+       } else if (std & V4L2_STD_SECAM) {
+               /* Select autodetect for SECAM */
+               cx25840_write(client, 0x808, 0xff);
+               cx25840_write(client, 0x80b, 0x10);
        }
 
        if (cx25840_read(client, 0x803) & 0x10) {
@@ -387,6 +385,8 @@ static int set_v4lstd(struct i2c_client *client, v4l2_std_id std)
                }
        }
 
+       v4l_dbg(1, cx25840_debug, client, "changing video std to fmt %i\n",fmt);
+
        /* Follow step 9 of section 3.16 in the cx25840 datasheet.
           Without this PAL may display a vertical ghosting effect.
           This happens for example with the Yuan MPC622. */

diff --git a/drivers/media/video/cx25840/cx25840-core.h b/drivers/media/video/cx25840/cx25840-core.h
index b132192..2804906 100644 (file)
--- a/drivers/media/video/cx25840/cx25840-core.h
+++ b/drivers/media/video/cx25840/cx25840-core.h
@@ -24,6 +24,8 @@
 #include <linux/videodev2.h>
 #include <linux/i2c.h>
 
+extern int cx25840_debug;
+
 /* ENABLE_PVR150_WORKAROUND activates a workaround for a hardware bug that is
    present in Hauppauge PVR-150 (and possibly PVR-500) cards that have
    certain NTSC tuners (tveeprom tuner model numbers 85, 99 and 112). The

diff --git a/drivers/media/video/cx25840/cx25840-vbi.c b/drivers/media/video/cx25840/cx25840-vbi.c
index c124974..6cc8bf2 100644 (file)
--- a/drivers/media/video/cx25840/cx25840-vbi.c
+++ b/drivers/media/video/cx25840/cx25840-vbi.c
@@ -86,61 +86,130 @@ void cx25840_vbi_setup(struct i2c_client *client)
 {
        struct cx25840_state *state = i2c_get_clientdata(client);
        v4l2_std_id std = cx25840_get_v4lstd(client);
+       int hblank,hactive,burst,vblank,vactive,sc,vblank656,src_decimation;
+       int luma_lpf,uv_lpf, comb;
+       u32 pll_int,pll_frac,pll_post;
 
+       /* datasheet startup, step 8d */
        if (std & ~V4L2_STD_NTSC) {
-               /* datasheet startup, step 8d */
                cx25840_write(client, 0x49f, 0x11);
+       } else {
+               cx25840_write(client, 0x49f, 0x14);
+       }
 
-               cx25840_write(client, 0x470, 0x84);
-               cx25840_write(client, 0x471, 0x00);
-               cx25840_write(client, 0x472, 0x2d);
-               cx25840_write(client, 0x473, 0x5d);
-
-               cx25840_write(client, 0x474, 0x24);
-               cx25840_write(client, 0x475, 0x40);
-               cx25840_write(client, 0x476, 0x24);
-               cx25840_write(client, 0x477, 0x28);
-
-               cx25840_write(client, 0x478, 0x1f);
-               cx25840_write(client, 0x479, 0x02);
+       if (std & V4L2_STD_625_50) {
+               hblank=0x084;
+               hactive=0x2d0;
+               burst=0x5d;
+               vblank=0x024;
+               vactive=0x244;
+               vblank656=0x28;
+               src_decimation=0x21f;
 
+               luma_lpf=2;
                if (std & V4L2_STD_SECAM) {
-                       cx25840_write(client, 0x47a, 0x80);
-                       cx25840_write(client, 0x47b, 0x00);
-                       cx25840_write(client, 0x47c, 0x5f);
-                       cx25840_write(client, 0x47d, 0x42);
+                       uv_lpf=0;
+                       comb=0;
+                       sc=0x0a425f;
                } else {
-                       cx25840_write(client, 0x47a, 0x90);
-                       cx25840_write(client, 0x47b, 0x20);
-                       cx25840_write(client, 0x47c, 0x63);
-                       cx25840_write(client, 0x47d, 0x82);
+                       uv_lpf=1;
+                       comb=0x20;
+                       sc=0x0a8263;
                }
-
-               cx25840_write(client, 0x47e, 0x0a);
-               cx25840_write(client, 0x47f, 0x01);
-               state->vbi_line_offset = 5;
        } else {
-               /* datasheet startup, step 8d */
-               cx25840_write(client, 0x49f, 0x14);
+               hactive=720;
+               hblank=122;
+               vactive=487;
+               luma_lpf=1;
+               uv_lpf=1;
+
+               src_decimation=0x21f;
+               if (std == V4L2_STD_PAL_M) {
+                       vblank=20;
+                       vblank656=24;
+                       burst=0x61;
+                       comb=0x20;
+
+                       sc=555452;
+               } else {
+                       vblank=26;
+                       vblank656=26;
+                       burst=0x5b;
+                       comb=0x66;
+                       sc=556063;
+               }
+       }
+
+       /* DEBUG: Displays configured PLL frequency */
+       pll_int=cx25840_read(client, 0x108);
+       pll_frac=cx25840_read4(client, 0x10c)&0x1ffffff;
+       pll_post=cx25840_read(client, 0x109);
+       v4l_dbg(1, cx25840_debug, client,
+                               "PLL regs = int: %u, frac: %u, post: %u\n",
+                               pll_int,pll_frac,pll_post);
+
+       if (pll_post) {
+               int fin, fsc;
+               int pll= (28636363L*((((u64)pll_int)<<25L)+pll_frac)) >>25L;
+
+               pll/=pll_post;
+               v4l_dbg(1, cx25840_debug, client, "PLL = %d.%06d MHz\n",
+                                               pll/1000000, pll%1000000);
+               v4l_dbg(1, cx25840_debug, client, "PLL/8 = %d.%06d MHz\n",
+                                               pll/8000000, (pll/8)%1000000);
+
+               fin=((u64)src_decimation*pll)>>12;
+               v4l_dbg(1, cx25840_debug, client, "ADC Sampling freq = "
+                                               "%d.%06d MHz\n",
+                                               fin/1000000,fin%1000000);
+
+               fsc= (((u64)sc)*pll) >> 24L;
+               v4l_dbg(1, cx25840_debug, client, "Chroma sub-carrier freq = "
+                                               "%d.%06d MHz\n",
+                                               fsc/1000000,fsc%1000000);
+
+               v4l_dbg(1, cx25840_debug, client, "hblank %i, hactive %i, "
+                       "vblank %i , vactive %i, vblank656 %i, src_dec %i,"
+                       "burst 0x%02x, luma_lpf %i, uv_lpf %i, comb 0x%02x,"
+                       " sc 0x%06x\n",
+                       hblank, hactive, vblank, vactive, vblank656,
+                       src_decimation, burst, luma_lpf, uv_lpf, comb, sc);
+       }
+
+       /* Sets horizontal blanking delay and active lines */
+       cx25840_write(client, 0x470, hblank);
+       cx25840_write(client, 0x471, 0xff&(((hblank>>8)&0x3)|(hactive <<4)));
+       cx25840_write(client, 0x472, hactive>>4);
+
+       /* Sets burst gate delay */
+       cx25840_write(client, 0x473, burst);
 
-               cx25840_write(client, 0x470, 0x7a);
-               cx25840_write(client, 0x471, 0x00);
-               cx25840_write(client, 0x472, 0x2d);
-               cx25840_write(client, 0x473, 0x5b);
+       /* Sets vertical blanking delay and active duration */
+       cx25840_write(client, 0x474, vblank);
+       cx25840_write(client, 0x475, 0xff&(((vblank>>8)&0x3)|(vactive <<4)));
+       cx25840_write(client, 0x476, vactive>>4);
+       cx25840_write(client, 0x477, vblank656);
 
-               cx25840_write(client, 0x474, 0x1a);
-               cx25840_write(client, 0x475, 0x70);
-               cx25840_write(client, 0x476, 0x1e);
-               cx25840_write(client, 0x477, 0x1e);
+       /* Sets src decimation rate */
+       cx25840_write(client, 0x478, 0xff&src_decimation);
+       cx25840_write(client, 0x479, 0xff&(src_decimation>>8));
 
-               cx25840_write(client, 0x478, 0x1f);
-               cx25840_write(client, 0x479, 0x02);
-               cx25840_write(client, 0x47a, 0x50);
-               cx25840_write(client, 0x47b, 0x66);
+       /* Sets Luma and UV Low pass filters */
+       cx25840_write(client, 0x47a, luma_lpf<<6|((uv_lpf<<4)&0x30));
 
-               cx25840_write(client, 0x47c, 0x1f);
-               cx25840_write(client, 0x47d, 0x7c);
-               cx25840_write(client, 0x47e, 0x08);
+       /* Enables comb filters */
+       cx25840_write(client, 0x47b, comb);
+
+       /* Sets SC Step*/
+       cx25840_write(client, 0x47c, sc);
+       cx25840_write(client, 0x47d, 0xff&sc>>8);
+       cx25840_write(client, 0x47e, 0xff&sc>>16);
+
+       /* Sets VBI parameters */
+       if (std & V4L2_STD_625_50) {
+               cx25840_write(client, 0x47f, 0x01);
+               state->vbi_line_offset = 5;
+       } else {
                cx25840_write(client, 0x47f, 0x00);
                state->vbi_line_offset = 8;
        }
@@ -186,7 +255,7 @@ int cx25840_vbi(struct i2c_client *client, unsigned int cmd, void *arg)
 
        case VIDIOC_S_FMT:
        {
-               int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_NTSC);
+               int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_525_60);
                int vbi_offset = is_pal ? 1 : 0;
                int i, x;
                u8 lcr[24];