Commit 2d5024a9 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab

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: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent e5cc2bf4
......@@ -813,8 +813,14 @@ static int check_firmware(struct dvb_frontend *fe, unsigned int type,
/* Check firmware version against what we downloaded. */
if (priv->firm_version != ((version & 0xf0) << 4 | (version & 0x0f))) {
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. */
......
......@@ -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;
};
......
......@@ -189,6 +189,7 @@ static void tm6000_config_tuner (struct tm6000_core *dev)
ctl.fname = "tm6000-xc3028.fw";
ctl.mts = 1;
ctl.read_not_reliable = 1;
xc2028_cfg.tuner = TUNER_XC2028;
xc2028_cfg.priv = &ctl;
......
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