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V4L/DVB: tm6000, reset I2C bus function

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Add new function for reset I2C bus. Rework some code for use this function.

Signed-off-by: Beholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Dmitri Belimov 2010-05-18 04:23:29 -03:00 committed by Mauro Carvalho Chehab
parent b9eb39d8f4
commit 2a15ac7ad6
3 changed files with 20 additions and 15 deletions
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17
drivers/staging/tm6000/tm6000-cards.c
View file

@ -363,13 +363,7 @@ int tm6000_tuner_callback(void *ptr, int component, int command, int arg)
tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT,
0x02, arg);
msleep(10);
rc = tm6000_set_reg(dev, REQ_03_SET_GET_MCU_PIN,
TM6000_GPIO_CLK, 0);
if (rc < 0)
return rc;
msleep(10);
rc = tm6000_set_reg(dev, REQ_03_SET_GET_MCU_PIN,
TM6000_GPIO_CLK, 1);
rc = tm6000_i2c_reset(dev, 10);
break;
case XC2028_TUNER_RESET:
/* Reset codes during load firmware */
@ -423,14 +417,7 @@ int tm6000_tuner_callback(void *ptr, int component, int command, int arg)
break;
case 2:
rc = tm6000_set_reg(dev, REQ_03_SET_GET_MCU_PIN,
TM6000_GPIO_CLK, 0);
if (rc < 0)
return rc;
msleep(100);
rc = tm6000_set_reg(dev, REQ_03_SET_GET_MCU_PIN,
TM6000_GPIO_CLK, 1);
msleep(100);
rc = tm6000_i2c_reset(dev, 100);
break;
}
}

16
drivers/staging/tm6000/tm6000-core.c
View file

@ -153,6 +153,22 @@ int tm6000_get_reg32 (struct tm6000_core *dev, u8 req, u16 value, u16 index)
return buf[3] | buf[2] << 8 | buf[1] << 16 | buf[0] << 24;
}
int tm6000_i2c_reset(struct tm6000_core *dev, u16 tsleep)
{
int rc;
rc = tm6000_set_reg(dev, REQ_03_SET_GET_MCU_PIN, TM6000_GPIO_CLK, 0);
if (rc < 0)
return rc;
msleep(tsleep);
rc = tm6000_set_reg(dev, REQ_03_SET_GET_MCU_PIN, TM6000_GPIO_CLK, 1);
msleep(tsleep);
return rc;
}
void tm6000_set_fourcc_format(struct tm6000_core *dev)
{
if (dev->dev_type == TM6010) {

2
drivers/staging/tm6000/tm6000.h
View file

@ -246,6 +246,8 @@ int tm6000_get_reg (struct tm6000_core *dev, u8 req, u16 value, u16 index);
int tm6000_get_reg16(struct tm6000_core *dev, u8 req, u16 value, u16 index);
int tm6000_get_reg32(struct tm6000_core *dev, u8 req, u16 value, u16 index);
int tm6000_set_reg (struct tm6000_core *dev, u8 req, u16 value, u16 index);
int tm6000_i2c_reset(struct tm6000_core *dev, u16 tsleep);
int tm6000_init (struct tm6000_core *dev);
int tm6000_init_analog_mode (struct tm6000_core *dev);