[media] tuner-core: simplify the standard fixup

Get rid of a number of unnecessary tuner_dbg messages by simplifying
the std fixup function.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/tuner-core.c b/drivers/media/video/tuner-core.c
index 6c007aa00236a1efc9c041dcb7dc722b74065ae6..1e7505eb32e937ca7e7a3cf36f83657d07295c72 100644 (file)
--- a/drivers/media/video/tuner-core.c
+++ b/drivers/media/video/tuner-core.c
@@ -823,7 +823,8 @@ static void set_tv_freq(struct i2c_client *c, unsigned int freq)
 /**
  * tuner_fixup_std - force a given video standard variant
  *
- * @t: tuner internal struct
+ * @t: tuner internal struct
+ * @std:       TV standard
  *
  * A few devices or drivers have problem to detect some standard variations.
  * On other operational systems, the drivers generally have a per-country
@@ -833,57 +834,39 @@ static void set_tv_freq(struct i2c_client *c, unsigned int freq)
  * to distinguish all video standard variations, a modprobe parameter can
  * be used to force a video standard match.
  */
-static int tuner_fixup_std(struct tuner *t)
+static v4l2_std_id tuner_fixup_std(struct tuner *t, v4l2_std_id std)
 {
-       if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
+       if (pal[0] != '-' && (std & V4L2_STD_PAL) == V4L2_STD_PAL) {
                switch (pal[0]) {
                case '6':
-                       tuner_dbg("insmod fixup: PAL => PAL-60\n");
-                       t->std = V4L2_STD_PAL_60;
-                       break;
+                       return V4L2_STD_PAL_60;
                case 'b':
                case 'B':
                case 'g':
                case 'G':
-                       tuner_dbg("insmod fixup: PAL => PAL-BG\n");
-                       t->std = V4L2_STD_PAL_BG;
-                       break;
+                       return V4L2_STD_PAL_BG;
                case 'i':
                case 'I':
-                       tuner_dbg("insmod fixup: PAL => PAL-I\n");
-                       t->std = V4L2_STD_PAL_I;
-                       break;
+                       return V4L2_STD_PAL_I;
                case 'd':
                case 'D':
                case 'k':
                case 'K':
-                       tuner_dbg("insmod fixup: PAL => PAL-DK\n");
-                       t->std = V4L2_STD_PAL_DK;
-                       break;
+                       return V4L2_STD_PAL_DK;
                case 'M':
                case 'm':
-                       tuner_dbg("insmod fixup: PAL => PAL-M\n");
-                       t->std = V4L2_STD_PAL_M;
-                       break;
+                       return V4L2_STD_PAL_M;
                case 'N':
                case 'n':
-                       if (pal[1] == 'c' || pal[1] == 'C') {
-                               tuner_dbg("insmod fixup: PAL => PAL-Nc\n");
-                               t->std = V4L2_STD_PAL_Nc;
-                       } else {
-                               tuner_dbg("insmod fixup: PAL => PAL-N\n");
-                               t->std = V4L2_STD_PAL_N;
-                       }
-                       break;
-               case '-':
-                       /* default parameter, do nothing */
-                       break;
+                       if (pal[1] == 'c' || pal[1] == 'C')
+                               return V4L2_STD_PAL_Nc;
+                       return V4L2_STD_PAL_N;
                default:
                        tuner_warn("pal= argument not recognised\n");
                        break;
                }
        }
-       if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
+       if (secam[0] != '-' && (std & V4L2_STD_SECAM) == V4L2_STD_SECAM) {
                switch (secam[0]) {
                case 'b':
                case 'B':
@@ -891,63 +874,42 @@ static int tuner_fixup_std(struct tuner *t)
                case 'G':
                case 'h':
                case 'H':
-                       tuner_dbg("insmod fixup: SECAM => SECAM-BGH\n");
-                       t->std = V4L2_STD_SECAM_B |
-                                V4L2_STD_SECAM_G |
-                                V4L2_STD_SECAM_H;
-                       break;
+                       return V4L2_STD_SECAM_B |
+                              V4L2_STD_SECAM_G |
+                              V4L2_STD_SECAM_H;
                case 'd':
                case 'D':
                case 'k':
                case 'K':
-                       tuner_dbg("insmod fixup: SECAM => SECAM-DK\n");
-                       t->std = V4L2_STD_SECAM_DK;
-                       break;
+                       return V4L2_STD_SECAM_DK;
                case 'l':
                case 'L':
-                       if ((secam[1] == 'C') || (secam[1] == 'c')) {
-                               tuner_dbg("insmod fixup: SECAM => SECAM-L'\n");
-                               t->std = V4L2_STD_SECAM_LC;
-                       } else {
-                               tuner_dbg("insmod fixup: SECAM => SECAM-L\n");
-                               t->std = V4L2_STD_SECAM_L;
-                       }
-                       break;
-               case '-':
-                       /* default parameter, do nothing */
-                       break;
+                       if ((secam[1] == 'C') || (secam[1] == 'c'))
+                               return V4L2_STD_SECAM_LC;
+                       return V4L2_STD_SECAM_L;
                default:
                        tuner_warn("secam= argument not recognised\n");
                        break;
                }
        }
 
-       if ((t->std & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
+       if (ntsc[0] != '-' && (std & V4L2_STD_NTSC) == V4L2_STD_NTSC) {
                switch (ntsc[0]) {
                case 'm':
                case 'M':
-                       tuner_dbg("insmod fixup: NTSC => NTSC-M\n");
-                       t->std = V4L2_STD_NTSC_M;
-                       break;
+                       return V4L2_STD_NTSC_M;
                case 'j':
                case 'J':
-                       tuner_dbg("insmod fixup: NTSC => NTSC_M_JP\n");
-                       t->std = V4L2_STD_NTSC_M_JP;
-                       break;
+                       return V4L2_STD_NTSC_M_JP;
                case 'k':
                case 'K':
-                       tuner_dbg("insmod fixup: NTSC => NTSC_M_KR\n");
-                       t->std = V4L2_STD_NTSC_M_KR;
-                       break;
-               case '-':
-                       /* default parameter, do nothing */
-                       break;
+                       return V4L2_STD_NTSC_M_KR;
                default:
                        tuner_info("ntsc= argument not recognised\n");
                        break;
                }
        }
-       return 0;
+       return std;
 }
 
 /*
@@ -1102,8 +1064,9 @@ static int tuner_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
        if (set_mode(t, V4L2_TUNER_ANALOG_TV))
                return 0;
 
-       t->std = std;
-       tuner_fixup_std(t);
+       t->std = tuner_fixup_std(t, std);
+       if (t->std != std)
+               tuner_dbg("Fixup standard %llx to %llx\n", std, t->std);
        set_freq(t, 0);
        return 0;
 }