linux_dsm_epyc7002/drivers/media/pci/saa7164/saa7164-i2c.c
Sakari Ailus bcb63314e2 [media] media: Drop FSF's postal address from the source code files
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.

The patch has been created with the following command without manual edits:

git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
	drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
	&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
2017-01-27 11:38:09 -02:00

123 lines
3.1 KiB
C

/*
* Driver for the NXP SAA7164 PCIe bridge
*
* Copyright (c) 2010-2015 Steven Toth <stoth@kernellabs.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/io.h>
#include "saa7164.h"
static int i2c_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num)
{
struct saa7164_i2c *bus = i2c_adap->algo_data;
struct saa7164_dev *dev = bus->dev;
int i, retval = 0;
dprintk(DBGLVL_I2C, "%s(num = %d)\n", __func__, num);
for (i = 0 ; i < num; i++) {
dprintk(DBGLVL_I2C, "%s(num = %d) addr = 0x%02x len = 0x%x\n",
__func__, num, msgs[i].addr, msgs[i].len);
if (msgs[i].flags & I2C_M_RD) {
retval = saa7164_api_i2c_read(bus,
msgs[i].addr,
0 /* reglen */,
NULL /* reg */, msgs[i].len, msgs[i].buf);
} else if (i + 1 < num && (msgs[i + 1].flags & I2C_M_RD) &&
msgs[i].addr == msgs[i + 1].addr) {
/* write then read from same address */
retval = saa7164_api_i2c_read(bus, msgs[i].addr,
msgs[i].len, msgs[i].buf,
msgs[i+1].len, msgs[i+1].buf
);
i++;
if (retval < 0)
goto err;
} else {
/* write */
retval = saa7164_api_i2c_write(bus, msgs[i].addr,
msgs[i].len, msgs[i].buf);
}
if (retval < 0)
goto err;
}
return num;
err:
return retval;
}
static u32 saa7164_functionality(struct i2c_adapter *adap)
{
return I2C_FUNC_I2C;
}
static const struct i2c_algorithm saa7164_i2c_algo_template = {
.master_xfer = i2c_xfer,
.functionality = saa7164_functionality,
};
/* ----------------------------------------------------------------------- */
static struct i2c_adapter saa7164_i2c_adap_template = {
.name = "saa7164",
.owner = THIS_MODULE,
.algo = &saa7164_i2c_algo_template,
};
static struct i2c_client saa7164_i2c_client_template = {
.name = "saa7164 internal",
};
int saa7164_i2c_register(struct saa7164_i2c *bus)
{
struct saa7164_dev *dev = bus->dev;
dprintk(DBGLVL_I2C, "%s(bus = %d)\n", __func__, bus->nr);
bus->i2c_adap = saa7164_i2c_adap_template;
bus->i2c_client = saa7164_i2c_client_template;
bus->i2c_adap.dev.parent = &dev->pci->dev;
strlcpy(bus->i2c_adap.name, bus->dev->name,
sizeof(bus->i2c_adap.name));
bus->i2c_adap.algo_data = bus;
i2c_set_adapdata(&bus->i2c_adap, bus);
i2c_add_adapter(&bus->i2c_adap);
bus->i2c_client.adapter = &bus->i2c_adap;
if (0 != bus->i2c_rc)
printk(KERN_ERR "%s: i2c bus %d register FAILED\n",
dev->name, bus->nr);
return bus->i2c_rc;
}
int saa7164_i2c_unregister(struct saa7164_i2c *bus)
{
i2c_del_adapter(&bus->i2c_adap);
return 0;
}