V4L/DVB: ngene: split out i2c code into a separate file

Split out the i2c related code from the ngene-core.c into a new file called
ngene-i2c.c.  This is part of a larger refactoring of the driver in preparation
for adding analog support.

Note that this patch makes *no* functional change - all I did was cut/paste the
code and add the function prototypes to ngene.h as needed.

Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 3 insertions, 134 deletions

diff --git a/drivers/media/dvb/ngene/ngene-core.c b/drivers/media/dvb/ngene/ngene-core.c
index ae1f6127f142..fedd341eb015 100644
--- a/drivers/media/dvb/ngene/ngene-core.c
+++ b/drivers/media/dvb/ngene/ngene-core.c
@@ -353,7 +353,7 @@ static int ngene_command_mutex(struct ngene *dev, struct ngene_command *com)
 	return 0;
 }
 
-static int ngene_command(struct ngene *dev, struct ngene_command *com)
+int ngene_command(struct ngene *dev, struct ngene_command *com)
 {
 	int result;
 
@@ -364,55 +364,6 @@ static int ngene_command(struct ngene *dev, struct ngene_command *com)
 }
 
 
-static int ngene_command_i2c_read(struct ngene *dev, u8 adr,
-			   u8 *out, u8 outlen, u8 *in, u8 inlen, int flag)
-{
-	struct ngene_command com;
-
-	com.cmd.hdr.Opcode = CMD_I2C_READ;
-	com.cmd.hdr.Length = outlen + 3;
-	com.cmd.I2CRead.Device = adr << 1;
-	memcpy(com.cmd.I2CRead.Data, out, outlen);
-	com.cmd.I2CRead.Data[outlen] = inlen;
-	com.cmd.I2CRead.Data[outlen + 1] = 0;
-	com.in_len = outlen + 3;
-	com.out_len = inlen + 1;
-
-	if (ngene_command(dev, &com) < 0)
-		return -EIO;
-
-	if ((com.cmd.raw8[0] >> 1) != adr)
-		return -EIO;
-
-	if (flag)
-		memcpy(in, com.cmd.raw8, inlen + 1);
-	else
-		memcpy(in, com.cmd.raw8 + 1, inlen);
-	return 0;
-}
-
-static int ngene_command_i2c_write(struct ngene *dev, u8 adr,
-				   u8 *out, u8 outlen)
-{
-	struct ngene_command com;
-
-
-	com.cmd.hdr.Opcode = CMD_I2C_WRITE;
-	com.cmd.hdr.Length = outlen + 1;
-	com.cmd.I2CRead.Device = adr << 1;
-	memcpy(com.cmd.I2CRead.Data, out, outlen);
-	com.in_len = outlen + 1;
-	com.out_len = 1;
-
-	if (ngene_command(dev, &com) < 0)
-		return -EIO;
-
-	if (com.cmd.raw8[0] == 1)
-		return -EIO;
-
-	return 0;
-}
-
 static int ngene_command_load_firmware(struct ngene *dev,
 				       u8 *ngene_fw, u32 size)
 {
@@ -478,7 +429,7 @@ static int ngene_command_config_free_buf(struct ngene *dev, u8 *config)
 	return 0;
 }
 
-static int ngene_command_gpio_set(struct ngene *dev, u8 select, u8 level)
+int ngene_command_gpio_set(struct ngene *dev, u8 select, u8 level)
 {
 	struct ngene_command com;
 
@@ -776,91 +727,9 @@ static int ngene_command_stream_control(struct ngene *dev, u8 stream,
 
 
 /****************************************************************************/
-/* I2C **********************************************************************/
+/* EEPROM TAGS **************************************************************/
 /****************************************************************************/
 
-static void ngene_i2c_set_bus(struct ngene *dev, int bus)
-{
-	if (!(dev->card_info->i2c_access & 2))
-		return;
-	if (dev->i2c_current_bus == bus)
-		return;
-
-	switch (bus) {
-	case 0:
-		ngene_command_gpio_set(dev, 3, 0);
-		ngene_command_gpio_set(dev, 2, 1);
-		break;
-
-	case 1:
-		ngene_command_gpio_set(dev, 2, 0);
-		ngene_command_gpio_set(dev, 3, 1);
-		break;
-	}
-	dev->i2c_current_bus = bus;
-}
-
-static int ngene_i2c_master_xfer(struct i2c_adapter *adapter,
-				 struct i2c_msg msg[], int num)
-{
-	struct ngene_channel *chan =
-		(struct ngene_channel *)i2c_get_adapdata(adapter);
-	struct ngene *dev = chan->dev;
-
-	down(&dev->i2c_switch_mutex);
-	ngene_i2c_set_bus(dev, chan->number);
-
-	if (num == 2 && msg[1].flags & I2C_M_RD && !(msg[0].flags & I2C_M_RD))
-		if (!ngene_command_i2c_read(dev, msg[0].addr,
-					    msg[0].buf, msg[0].len,
-					    msg[1].buf, msg[1].len, 0))
-			goto done;
-
-	if (num == 1 && !(msg[0].flags & I2C_M_RD))
-		if (!ngene_command_i2c_write(dev, msg[0].addr,
-					     msg[0].buf, msg[0].len))
-			goto done;
-	if (num == 1 && (msg[0].flags & I2C_M_RD))
-		if (!ngene_command_i2c_read(dev, msg[0].addr, NULL, 0,
-					    msg[0].buf, msg[0].len, 0))
-			goto done;
-
-	up(&dev->i2c_switch_mutex);
-	return -EIO;
-
-done:
-	up(&dev->i2c_switch_mutex);
-	return num;
-}
-
-
-static u32 ngene_i2c_functionality(struct i2c_adapter *adap)
-{
-	return I2C_FUNC_SMBUS_EMUL;
-}
-
-static struct i2c_algorithm ngene_i2c_algo = {
-	.master_xfer = ngene_i2c_master_xfer,
-	.functionality = ngene_i2c_functionality,
-};
-
-static int ngene_i2c_init(struct ngene *dev, int dev_nr)
-{
-	struct i2c_adapter *adap = &(dev->channel[dev_nr].i2c_adapter);
-
-	i2c_set_adapdata(adap, &(dev->channel[dev_nr]));
-	adap->class = I2C_CLASS_TV_DIGITAL | I2C_CLASS_TV_ANALOG;
-
-	strcpy(adap->name, "nGene");
-
-	adap->algo = &ngene_i2c_algo;
-	adap->algo_data = (void *)&(dev->channel[dev_nr]);
-	adap->dev.parent = &dev->pci_dev->dev;
-
-	return i2c_add_adapter(adap);
-}
-
-
 /****************************************************************************/
 /* DVB functions and API interface ******************************************/
 /****************************************************************************/