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[media] em28xx: add support for EM28174 chip

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EM28174 is very similar as already supported EM2874.
I am not sure what are differences, but it could be analog support.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Antti Palosaari 2011-04-07 16:04:48 -03:00 committed by Mauro Carvalho Chehab
parent f71095be66
commit bc022694d7
4 changed files with 12 additions and 2 deletions
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5
drivers/media/video/em28xx/em28xx-cards.c
View File

@ -2810,6 +2810,11 @@ static int em28xx_init_dev(struct em28xx **devhandle, struct usb_device *udev,
dev->reg_gpio_num = EM2874_R80_GPIO;
dev->wait_after_write = 0;
break;
case CHIP_ID_EM28174:
em28xx_info("chip ID is em28174\n");
dev->reg_gpio_num = EM2874_R80_GPIO;
dev->wait_after_write = 0;
break;
case CHIP_ID_EM2883:
em28xx_info("chip ID is em2882/em2883\n");
dev->wait_after_write = 0;

6
drivers/media/video/em28xx/em28xx-core.c
View File

@ -614,7 +614,7 @@ int em28xx_capture_start(struct em28xx *dev, int start)
{
int rc;
if (dev->chip_id == CHIP_ID_EM2874) {
if (dev->chip_id == CHIP_ID_EM2874 || dev->chip_id == CHIP_ID_EM28174) {
/* The Transport Stream Enable Register moved in em2874 */
if (!start) {
rc = em28xx_write_reg_bits(dev, EM2874_R5F_TS_ENABLE,
@ -1111,6 +1111,10 @@ int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev)
/* FIXME - for now assume 564 like it was before, but the
em2874 code should be added to return the proper value... */
packet_size = 564;
} else if (dev->chip_id == CHIP_ID_EM28174) {
/* FIXME same as em2874. 564 was enough for 22 Mbit DVB-T
but too much for 44 Mbit DVB-C. */
packet_size = 752;
} else {
/* TS max packet size stored in bits 1-0 of R01 */
chip_cfg2 = em28xx_read_reg(dev, EM28XX_R01_CHIPCFG2);

2
drivers/media/video/em28xx/em28xx-i2c.c
View File

@ -332,7 +332,7 @@ static int em28xx_i2c_eeprom(struct em28xx *dev, unsigned char *eedata, int len)
struct em28xx_eeprom *em_eeprom = (void *)eedata;
int i, err, size = len, block;
if (dev->chip_id == CHIP_ID_EM2874) {
if (dev->chip_id == CHIP_ID_EM2874 || dev->chip_id == CHIP_ID_EM28174) {
/* Empia switched to a 16-bit addressable eeprom in newer
devices. While we could certainly write a routine to read
the eeprom, there is nothing of use in there that cannot be

1
drivers/media/video/em28xx/em28xx-reg.h
View File

@ -201,6 +201,7 @@ enum em28xx_chip_id {
CHIP_ID_EM2870 = 35,
CHIP_ID_EM2883 = 36,
CHIP_ID_EM2874 = 65,
CHIP_ID_EM28174 = 113,
};
/*