Commit cb1c0f8e authored by Devin Heitmueller's avatar Devin Heitmueller Committed by Mauro Carvalho Chehab

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: default avatarDevin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 0abf2629
......@@ -2,7 +2,7 @@
# Makefile for the nGene device driver
#
ngene-objs := ngene-core.o
ngene-objs := ngene-core.o ngene-i2c.o
obj-$(CONFIG_DVB_NGENE) += ngene.o
......
......@@ -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 ******************************************/
/****************************************************************************/
......
/*
* ngene-i2c.c: nGene PCIe bridge driver i2c functions
*
* Copyright (C) 2005-2007 Micronas
*
* Copyright (C) 2008-2009 Ralph Metzler <rjkm@metzlerbros.de>
* Modifications for new nGene firmware,
* support for EEPROM-copying,
* support for new dual DVB-S2 card prototype
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 only, as published by the Free Software Foundation.
*
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA
* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
*/
/* FIXME - some of these can probably be removed */
#include <linux/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/poll.h>
#include <linux/io.h>
#include <asm/div64.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
#include <linux/smp_lock.h>
#include <linux/timer.h>
#include <linux/version.h>
#include <linux/byteorder/generic.h>
#include <linux/firmware.h>
#include <linux/vmalloc.h>
#include "ngene.h"
/* Firmware command for i2c operations */
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 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,
};
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);
}
......@@ -854,6 +854,13 @@ struct ngene_buffer {
#endif
/* Provided by ngene-core.c */
int ngene_command(struct ngene *dev, struct ngene_command *com);
int ngene_command_gpio_set(struct ngene *dev, u8 select, u8 level);
/* Provided by ngene-i2c.c */
int ngene_i2c_init(struct ngene *dev, int dev_nr);
#endif
/* LocalWords: Endif
......
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