[media] em28xx: add support for EM28174 chip
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>
diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c
index bdd8618..9a5ac56 100644
--- a/drivers/media/video/em28xx/em28xx-cards.c
+++ b/drivers/media/video/em28xx/em28xx-cards.c
@@ -2810,6 +2810,11 @@
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;
diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c
index 44c63cbd..92b6dd8 100644
--- a/drivers/media/video/em28xx/em28xx-core.c
+++ b/drivers/media/video/em28xx/em28xx-core.c
@@ -614,7 +614,7 @@
{
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 @@
/* 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);
diff --git a/drivers/media/video/em28xx/em28xx-i2c.c b/drivers/media/video/em28xx/em28xx-i2c.c
index 71474d3..4739fc7 100644
--- a/drivers/media/video/em28xx/em28xx-i2c.c
+++ b/drivers/media/video/em28xx/em28xx-i2c.c
@@ -332,7 +332,7 @@
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
diff --git a/drivers/media/video/em28xx/em28xx-reg.h b/drivers/media/video/em28xx/em28xx-reg.h
index 91e9055..e92a28e 100644
--- a/drivers/media/video/em28xx/em28xx-reg.h
+++ b/drivers/media/video/em28xx/em28xx-reg.h
@@ -201,6 +201,7 @@
CHIP_ID_EM2870 = 35,
CHIP_ID_EM2883 = 36,
CHIP_ID_EM2874 = 65,
+ CHIP_ID_EM28174 = 113,
};
/*