V4L/DVB (6180): tuner: don't probe 0x6b or 0x6f on cx88 boards

Ignore 0x6b and 0x6f on cx88 boards. Some FusionHDTV cards
have an ir receiver at 0x6b and an RTC at 0x6f which can
get corrupted if probed.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/media/video/tuner-core.c b/drivers/media/video/tuner-core.c
index 2f74379f4e4b..2d4a3e38f278 100644
--- a/drivers/media/video/tuner-core.c
+++ b/drivers/media/video/tuner-core.c
@@ -661,6 +661,27 @@ static int tuner_probe(struct i2c_adapter *adap)
                 normal_i2c[1] = I2C_CLIENT_END;
         }
 
+        /* HACK: Ignore 0x6b and 0x6f on cx88 boards.
+         * FusionHDTV5 RT Gold has an ir receiver at 0x6b
+         * and an RTC at 0x6f which can get corrupted if probed.
+         */
+        if (adap->id == I2C_HW_B_CX2388x) {
+                unsigned int i = 0;
+
+                while (i < I2C_CLIENT_MAX_OPTS && ignore[i] != I2C_CLIENT_END)
+                        i += 2;
+                if (i + 4 < I2C_CLIENT_MAX_OPTS) {
+                        ignore[i+0] = adap->nr;
+                        ignore[i+1] = 0x6b;
+                        ignore[i+2] = adap->nr;
+                        ignore[i+3] = 0x6f;
+                        ignore[i+4] = I2C_CLIENT_END;
+                } else
+                        printk(KERN_WARNING "tuner: "
+                               "too many options specified "
+                               "in i2c probe ignore list!\n");
+        }
+
         default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV;
 
         if (adap->class & I2C_CLASS_TV_ANALOG)