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[media] em28xx: Prepare to support 2 different I2C buses

瀏覽代碼 
Newer em28xx devices have 2 buses. Change the logic to allow
using both buses.
This patch was generated by this small script:
for i in drivers/media/usb/em28xx/*.c; do
	sed 's,->i2c_adap,->i2c_adap[dev->def_i2c_bus],g;s,->i2c_client,->i2c_client[dev->def_i2c_bus],'
done
Of course, em28xx.h needed manual edit.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab
2013-03-05 06:55:26 -03:00
父節點 da508f5799
當前提交 c7a45e5b4f
共有 5 個文件被更改，包括 85 次插入 和 78 次删除
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30
drivers/media/usb/em28xx/em28xx-i2c.c
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@@ -384,7 +384,7 @@ static int em28xx_i2c_read_block(struct em28xx *dev, u16 addr, bool addr_w16,
/* Select address */
buf[0] = addr >> 8;
buf[1] = addr & 0xff;
ret = i2c_master_send(&dev->i2c_client, buf + !addr_w16, 1 + addr_w16);
ret = i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], buf + !addr_w16, 1 + addr_w16);
if (ret < 0)
return ret;
/* Read data */
@@ -398,7 +398,7 @@ static int em28xx_i2c_read_block(struct em28xx *dev, u16 addr, bool addr_w16,
else
rsize = remain;
ret = i2c_master_recv(&dev->i2c_client, data, rsize);
ret = i2c_master_recv(&dev->i2c_client[dev->def_i2c_bus], data, rsize);
if (ret < 0)
return ret;
@@ -422,10 +422,10 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, u8 **eedata, u16 *eedata_len)
*eedata = NULL;
*eedata_len = 0;
dev->i2c_client.addr = 0xa0 >> 1;
dev->i2c_client[dev->def_i2c_bus].addr = 0xa0 >> 1;
/* Check if board has eeprom */
err = i2c_master_recv(&dev->i2c_client, &buf, 0);
err = i2c_master_recv(&dev->i2c_client[dev->def_i2c_bus], &buf, 0);
if (err < 0) {
em28xx_info("board has no eeprom\n");
return -ENODEV;
@@ -652,8 +652,8 @@ void em28xx_do_i2c_scan(struct em28xx *dev)
memset(i2c_devicelist, 0, ARRAY_SIZE(i2c_devicelist));
for (i = 0; i < ARRAY_SIZE(i2c_devs); i++) {
dev->i2c_client.addr = i;
rc = i2c_master_recv(&dev->i2c_client, &buf, 0);
dev->i2c_client[dev->def_i2c_bus].addr = i;
rc = i2c_master_recv(&dev->i2c_client[dev->def_i2c_bus], &buf, 0);
if (rc < 0)
continue;
i2c_devicelist[i] = i;
@@ -675,21 +675,21 @@ int em28xx_i2c_register(struct em28xx *dev)
BUG_ON(!dev->em28xx_write_regs || !dev->em28xx_read_reg);
BUG_ON(!dev->em28xx_write_regs_req || !dev->em28xx_read_reg_req);
dev->i2c_adap = em28xx_adap_template;
dev->i2c_adap.dev.parent = &dev->udev->dev;
strcpy(dev->i2c_adap.name, dev->name);
dev->i2c_adap.algo_data = dev;
i2c_set_adapdata(&dev->i2c_adap, &dev->v4l2_dev);
dev->i2c_adap[dev->def_i2c_bus] = em28xx_adap_template;
dev->i2c_adap[dev->def_i2c_bus].dev.parent = &dev->udev->dev;
strcpy(dev->i2c_adap[dev->def_i2c_bus].name, dev->name);
dev->i2c_adap[dev->def_i2c_bus].algo_data = dev;
i2c_set_adapdata(&dev->i2c_adap[dev->def_i2c_bus], &dev->v4l2_dev);
retval = i2c_add_adapter(&dev->i2c_adap);
retval = i2c_add_adapter(&dev->i2c_adap[dev->def_i2c_bus]);
if (retval < 0) {
em28xx_errdev("%s: i2c_add_adapter failed! retval [%d]\n",
__func__, retval);
return retval;
}
dev->i2c_client = em28xx_client_template;
dev->i2c_client.adapter = &dev->i2c_adap;
dev->i2c_client[dev->def_i2c_bus] = em28xx_client_template;
dev->i2c_client[dev->def_i2c_bus].adapter = &dev->i2c_adap[dev->def_i2c_bus];
retval = em28xx_i2c_eeprom(dev, &dev->eedata, &dev->eedata_len);
if ((retval < 0) && (retval != -ENODEV)) {
@@ -711,6 +711,6 @@ int em28xx_i2c_register(struct em28xx *dev)
*/
int em28xx_i2c_unregister(struct em28xx *dev)
{
i2c_del_adapter(&dev->i2c_adap);
i2c_del_adapter(&dev->i2c_adap[dev->def_i2c_bus]);
return 0;
}