V4L/DVB (3405): Fixes tvp5150a/am1 detection.

- Tvp5150 type were determined by a secondary register instead of
  using ROM code.
- tvp5150am1 have ROM=4.0, while tvp5150a have ROM=3.33 (decimal).
  All other ROM versions are reported as unknown tvp5150.
- Except for reporting, current code doesn't enable any special feature
  for tvp5150am1 or tvp5150a. Code should work for both models (but were
  tested only for tvp5150am1).

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

1 files changed, 12 insertions, 9 deletions

diff --git a/drivers/media/video/tvp5150.c b/drivers/media/video/tvp5150.c
index fad9ea0ae4f2..a6330a351eaa 100644
--- a/drivers/media/video/tvp5150.c
+++ b/drivers/media/video/tvp5150.c
@@ -746,24 +746,27 @@ static int tvp5150_set_std(struct i2c_client *c, v4l2_std_id std)
 
 static inline void tvp5150_reset(struct i2c_client *c)
 {
-        u8 type, ver_656, msb_id, lsb_id, msb_rom, lsb_rom;
+        u8 msb_id, lsb_id, msb_rom, lsb_rom;
         struct tvp5150 *decoder = i2c_get_clientdata(c);
 
-        type=tvp5150_read(c,TVP5150_AUTOSW_MSK);
         msb_id=tvp5150_read(c,TVP5150_MSB_DEV_ID);
         lsb_id=tvp5150_read(c,TVP5150_LSB_DEV_ID);
         msb_rom=tvp5150_read(c,TVP5150_ROM_MAJOR_VER);
         lsb_rom=tvp5150_read(c,TVP5150_ROM_MINOR_VER);
 
-        if (type==0xdc) {
-                ver_656=tvp5150_read(c,TVP5150_REV_SELECT);
-                tvp5150_info("tvp%02x%02xam1 detected 656 version is %d.\n",msb_id, lsb_id,ver_656);
-        } else if (type==0xfc) {
-                tvp5150_info("tvp%02x%02xa detected.\n",msb_id, lsb_id);
+        if ((msb_rom==4)&&(lsb_rom==0)) { /* Is TVP5150AM1 */
+                tvp5150_info("tvp%02x%02xam1 detected.\n",msb_id, lsb_id);
+
+                /* ITU-T BT.656.4 timing */
+                tvp5150_write(c,TVP5150_REV_SELECT,0);
         } else {
-                tvp5150_info("unknown tvp%02x%02x chip detected(%d).\n",msb_id,lsb_id,type);
+                if ((msb_rom==3)||(lsb_rom==0x21)) { /* Is TVP5150A */
+                        tvp5150_info("tvp%02x%02xa detected.\n",msb_id, lsb_id);
+                } else {
+                        tvp5150_info("*** unknown tvp%02x%02x chip detected.\n",msb_id,lsb_id);
+                        tvp5150_info("*** Rom ver is %d.%d\n",msb_rom,lsb_rom);
+                }
         }
-        tvp5150_info("Rom ver is %d.%d\n",msb_rom,lsb_rom);
 
         /* Initializes TVP5150 to its default values */
         tvp5150_write_inittab(c, tvp5150_init_default);