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[media] cx231xx: remember status of i2c port_3 switch 

This is used later for is_tuner function that switches i2c behaviour for
some tuners.

[mchehab@osg.samsung.com: Fix CodingStyle on a multi-line comment]

Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Matthias Schwarzott 2014-10-02 02:21:00 -03:00 committed by Mauro Carvalho Chehab
parent c3c3f1ae8b
commit a1f267651f
2 changed files with 13 additions and 0 deletions
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12
drivers/media/usb/cx231xx/cx231xx-avcore.c
View File

@ -1272,6 +1272,14 @@ int cx231xx_enable_i2c_port_3(struct cx231xx *dev, bool is_port_3)
if (dev->board.dont_use_port_3)
is_port_3 = false;
/*
* Should this code check dev->port_3_switch_enabled first
* to skip unnecessary reading of the register?
* If yes, the flag dev->port_3_switch_enabled must be initialized
* correctly.
*/
status = cx231xx_read_ctrl_reg(dev, VRT_GET_REGISTER,
PWR_CTL_EN, value, 4);
if (status < 0)
@ -1294,6 +1302,10 @@ int cx231xx_enable_i2c_port_3(struct cx231xx *dev, bool is_port_3)
status = cx231xx_write_ctrl_reg(dev, VRT_SET_REGISTER,
PWR_CTL_EN, value, 4);
/* remember status of the switch for usage in is_tuner */
if (status >= 0)
dev->port_3_switch_enabled = is_port_3;
return status;
}

1
drivers/media/usb/cx231xx/cx231xx.h
View File

@ -629,6 +629,7 @@ struct cx231xx {
/* I2C adapters: Master 1 & 2 (External) & Master 3 (Internal only) */
struct cx231xx_i2c i2c_bus[3];
unsigned int xc_fw_load_done:1;
unsigned int port_3_switch_enabled:1;
/* locks */
struct mutex gpio_i2c_lock;
struct mutex i2c_lock;