V4L/DVB: tm6000, reset I2C bus function

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>

3 files changed, 20 insertions, 15 deletions

diff --git a/drivers/staging/tm6000/tm6000-cards.c b/drivers/staging/tm6000/tm6000-cards.c
index 33b134b521be..22fbd75a551d 100644
--- a/drivers/staging/tm6000/tm6000-cards.c
+++ b/drivers/staging/tm6000/tm6000-cards.c
@@ -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;
                 }
         }
diff --git a/drivers/staging/tm6000/tm6000-core.c b/drivers/staging/tm6000/tm6000-core.c
index 1259ae550547..65feb8cb421c 100644
--- a/drivers/staging/tm6000/tm6000-core.c
+++ b/drivers/staging/tm6000/tm6000-core.c
@@ -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) {
diff --git a/drivers/staging/tm6000/tm6000.h b/drivers/staging/tm6000/tm6000.h
index 79ef72a3f431..7bbaf26dea14 100644
--- a/drivers/staging/tm6000/tm6000.h
+++ b/drivers/staging/tm6000/tm6000.h
@@ -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);