[media] xc4000: setting registers

This patch implements setting the registers in xc4000_set_params()
and xc4000_set_analog_params(). A new register is defined which enables
filtering of the composite video output (this is needed to avoid bad
picture quality with some boards).

Signed-off-by: Istvan Varga <istvan_v@mailbox.hu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/common/tuners/xc4000.c b/drivers/media/common/tuners/xc4000.c
index 24afebb..bf3f6f1 100644 (file)
--- a/drivers/media/common/tuners/xc4000.c
+++ b/drivers/media/common/tuners/xc4000.c
@@ -131,6 +131,7 @@ struct xc4000_priv {
 #define XREG_SEEK_MODE    0x06
 #define XREG_POWER_DOWN   0x08
 #define XREG_SIGNALSOURCE 0x0A
+#define XREG_SMOOTHEDCVBS 0x0E
 #define XREG_AMPLITUDE    0x10
 
 /* Registers (Read-only) */
@@ -1218,15 +1219,35 @@ static int xc4000_set_params(struct dvb_frontend *fe,
                       "xc4000: xc_SetSignalSource(%d) failed\n",
                       priv->rf_mode);
                goto fail;
+       } else {
+               u16     video_mode, audio_mode;
+               video_mode = XC4000_Standard[priv->video_standard].VideoMode;
+               audio_mode = XC4000_Standard[priv->video_standard].AudioMode;
+               if (type == DTV6 && priv->firm_version != 0x0102)
+                       video_mode |= 0x0001;
+               ret = xc_SetTVStandard(priv, video_mode, audio_mode);
+               if (ret != XC_RESULT_SUCCESS) {
+                       printk(KERN_ERR "xc4000: xc_SetTVStandard failed\n");
+                       /* DJH - do not return when it fails... */
+                       /* goto fail; */
+               }
        }
 
-       ret = xc_SetTVStandard(priv,
-               XC4000_Standard[priv->video_standard].VideoMode,
-               XC4000_Standard[priv->video_standard].AudioMode);
-       if (ret != XC_RESULT_SUCCESS) {
-               printk(KERN_ERR "xc4000: xc_SetTVStandard failed\n");
-               goto fail;
+       if (priv->card_type == XC4000_CARD_WINFAST_CX88) {
+               if (xc_write_reg(priv, XREG_D_CODE, 0) == 0)
+                       ret = 0;
+               if (xc_write_reg(priv, XREG_AMPLITUDE,
+                                (priv->firm_version == 0x0102 ? 132 : 134))
+                   != 0)
+                       ret = -EREMOTEIO;
+               if (xc_write_reg(priv, XREG_SMOOTHEDCVBS, 1) != 0)
+                       ret = -EREMOTEIO;
+               if (ret != 0) {
+                       printk(KERN_ERR "xc4000: setting registers failed\n");
+                       /* goto fail; */
+               }
        }
+
        xc_tune_channel(priv, priv->freq_hz, XC_TUNE_DIGITAL);
 
        ret = 0;
@@ -1311,14 +1332,36 @@ tune_channel:
                       "xc4000: xc_SetSignalSource(%d) failed\n",
                       priv->rf_mode);
                goto fail;
+       } else {
+               u16     video_mode, audio_mode;
+               video_mode = XC4000_Standard[priv->video_standard].VideoMode;
+               audio_mode = XC4000_Standard[priv->video_standard].AudioMode;
+               if (priv->video_standard < XC4000_BG_PAL_A2) {
+                       if (0 /*type & NOGD*/)
+                               video_mode &= 0xFF7F;
+               } else if (priv->video_standard < XC4000_I_PAL_NICAM) {
+                       if (priv->card_type == XC4000_CARD_WINFAST_CX88 &&
+                           priv->firm_version == 0x0102)
+                               video_mode &= 0xFEFF;
+               }
+               ret = xc_SetTVStandard(priv, video_mode, audio_mode);
+               if (ret != XC_RESULT_SUCCESS) {
+                       printk(KERN_ERR "xc4000: xc_SetTVStandard failed\n");
+                       goto fail;
+               }
        }
 
-       ret = xc_SetTVStandard(priv,
-               XC4000_Standard[priv->video_standard].VideoMode,
-               XC4000_Standard[priv->video_standard].AudioMode);
-       if (ret != XC_RESULT_SUCCESS) {
-               printk(KERN_ERR "xc4000: xc_SetTVStandard failed\n");
-               goto fail;
+       if (priv->card_type == XC4000_CARD_WINFAST_CX88) {
+               if (xc_write_reg(priv, XREG_D_CODE, 0) == 0)
+                       ret = 0;
+               if (xc_write_reg(priv, XREG_AMPLITUDE, 1) != 0)
+                       ret = -EREMOTEIO;
+               if (xc_write_reg(priv, XREG_SMOOTHEDCVBS, 1) != 0)
+                       ret = -EREMOTEIO;
+               if (ret != 0) {
+                       printk(KERN_ERR "xc4000: setting registers failed\n");
+                       goto fail;
+               }
        }
 
        xc_tune_channel(priv, priv->freq_hz, XC_TUNE_ANALOG);