V4L/DVB (5323): Updated support for tuner callbacks

This change supplies a more generic version of the tuner callback.
The tuner struct now has a function pointer
  int (*tuner_callback) (void *dev, int command, int arg)
additionally to a int config parameter.
both can be set through the TUNER_SET_TYPE_ADDR client call.
Note that the meaning of the parameters depend on the tuner type.

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 23 insertions, 6 deletions

diff --git a/drivers/media/video/saa7134/saa7134-core.c b/drivers/media/video/saa7134/saa7134-core.c
index 8ed03d65a34..5f74ea467d4 100644
--- a/drivers/media/video/saa7134/saa7134-core.c
+++ b/drivers/media/video/saa7134/saa7134-core.c
@@ -120,7 +120,6 @@ void saa7134_track_gpio(struct saa7134_dev *dev, char *msg)
 void saa7134_set_gpio(struct saa7134_dev *dev, int bit_no, int value)
 {
         u32 index, bitval;
-        u8 sync_control;
 
         index = 1 << bit_no;
         switch (value) {
@@ -140,22 +139,40 @@ void saa7134_set_gpio(struct saa7134_dev *dev, int bit_no, int value)
                 dprintk("setting GPIO%d to tristate\n", bit_no);
                 saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, index, 0);
                 break;
-        case 4: /* sync output on GPIO 22 for tda8275a, 50Hz*/
-        case 5: /* sync output on GPIO 22 for tda8275a, 60Hz*/
-                if (bit_no == 22) {
-                        dprintk("setting GPIO22 to vsync %d\n", value - 4);
+        }
+}
+
+int saa7134_tuner_callback(void *ptr, int command, int arg)
+{
+        u8 sync_control;
+        struct saa7134_dev *dev = ptr;
+
+        switch (dev->tuner_type) {
+        case TUNER_PHILIPS_TDA8290:
+                switch (command) {
+                case 0: /* switch LNA gain through GPIO 22*/
+                        saa7134_set_gpio(dev, 22, arg) ;
+                        break;
+                case 1: /* vsync output at GPIO22. 50 / 60Hz */
+                        dprintk("setting GPIO22 to vsync %d\n", arg);
                         saa_andorb(SAA7134_VIDEO_PORT_CTRL3, 0x80, 0x80);
                         saa_andorb(SAA7134_VIDEO_PORT_CTRL6, 0x0f, 0x03);
-                        if (value == 5)
+                        if (arg == 1)
                                 sync_control = 11;
                         else
                                 sync_control = 17;
                         saa_writeb(SAA7134_VGATE_START, sync_control);
                         saa_writeb(SAA7134_VGATE_STOP, sync_control + 1);
                         saa_andorb(SAA7134_MISC_VGATE_MSB, 0x03, 0x00);
+                        break;
+                default:
+                        return -EINVAL;
                 }
                 break;
+        default:
+                return -ENODEV;
         }
+        return 0;
 }
 
 /* ------------------------------------------------------------------ */