diff mbox

[08/12] cx231xx: let is_tuner check the real i2c port and not the i2c master number

Message ID 1411621684-8295-8-git-send-email-zzam@gentoo.org (mailing list archive)
State New, archived
Headers show

Commit Message

Matthias Schwarzott Sept. 25, 2014, 5:08 a.m. UTC 
get used i2c port from bus_nr and status of port_3 switch

Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
---
 drivers/media/usb/cx231xx/cx231xx-i2c.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/media/usb/cx231xx/cx231xx-i2c.c b/drivers/media/usb/cx231xx/cx231xx-i2c.c
index 86f90c0..a8c0f90 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_3 : I2C_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)