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authorMauro Carvalho Chehab <mchehab@redhat.com>2009-09-14 10:23:20 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2010-05-18 00:40:06 -0300
commit2d5024a9e97337874d8d7aa1d6a54ed1c917c5a0 (patch)
tree33d022a4a27f4d09732381a537b66a98744f4812 /drivers/media/common
parente5cc2bf4450fd9739534e690cc16efc140d7b7fc (diff)
V4L/DVB (12825): tm6000: I2C reading operations is not reliable on tm6000
tm6000 sometimes can't read from i2c, but this is currently required for tuner-xc2028 to work. This patch adds an option to tuner-xc2028 to not rely on i2c reading. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/common')
-rw-r--r--drivers/media/common/tuners/tuner-xc2028.c10
-rw-r--r--drivers/media/common/tuners/tuner-xc2028.h1
2 files changed, 9 insertions, 2 deletions
diff --git a/drivers/media/common/tuners/tuner-xc2028.c b/drivers/media/common/tuners/tuner-xc2028.c
index 8d2907f38a94..53f0fbb33cc6 100644
--- a/drivers/media/common/tuners/tuner-xc2028.c
+++ b/drivers/media/common/tuners/tuner-xc2028.c
@@ -813,8 +813,14 @@ check_device:
/* Check firmware version against what we downloaded. */
if (priv->firm_version != ((version & 0xf0) << 4 | (version & 0x0f))) {
- tuner_err("Incorrect readback of firmware version.\n");
- goto fail;
+ if (!priv->ctrl.read_not_reliable) {
+ tuner_err("Incorrect readback of firmware version.\n");
+ goto fail;
+ } else {
+ tuner_err("Returned an incorrect version. However, "
+ "read is not reliable enough. Ignoring it.\n");
+ hwmodel = 3028;
+ }
}
/* Check that the tuner hardware model remains consistent over time. */
diff --git a/drivers/media/common/tuners/tuner-xc2028.h b/drivers/media/common/tuners/tuner-xc2028.h
index e116071810e0..9778c96a5006 100644
--- a/drivers/media/common/tuners/tuner-xc2028.h
+++ b/drivers/media/common/tuners/tuner-xc2028.h
@@ -40,6 +40,7 @@ struct xc2028_ctrl {
unsigned int vhfbw7:1;
unsigned int uhfbw8:1;
unsigned int disable_power_mgmt:1;
+ unsigned int read_not_reliable:1;
unsigned int demod;
enum firmware_type type:2;
};