Get used i2c port from bus_nr and status of port_3 switch.
Signed-off-by: Matthias Schwarzott <z...@gentoo.org>
---
drivers/media/usb/cx231xx/cx231xx-i2c.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/media/usb/cx231xx/cx231xx-i2c.c
b/drivers/media/usb/cx231xx/cx231xx-i2c.c
index 6a871e0..02ae498 100644
--- a/drivers/media/usb/cx231xx/cx231xx-i2c.c
+++ b/drivers/media/usb/cx231xx/cx231xx-i2c.c
@@ -54,10 +54,19 @@ do {
\
} \
} while (0)
+static inline int get_real_i2c_port(struct cx231xx *dev, int bus_nr)
+{
+ if (bus_nr == 1)
+ return dev->port_3_switch_enabled ? I2C_1_MUX_3 : I2C_1_MUX_1;
+ return bus_nr;
+}
+
static inline bool is_tuner(struct cx231xx *dev, struct cx231xx_i2c *bus,
const struct i2c_msg *msg, int tuner_type)
{
- if (bus->nr != dev->board.tuner_i2c_master)
+ int i2c_port = get_real_i2c_port(dev, bus->nr);
+
+ if (i2c_port != dev->board.tuner_i2c_master)
return false;
if (msg->addr != dev->board.tuner_addr)
--
2.1.1
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