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| author | Frank Schaefer <fschaefer.oss@googlemail.com> | 2013-03-03 22:37:40 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-03-04 23:20:51 +0400 |
| commit | 87b52439cff4a8b745f419b9e99fa68a5533c342 (patch) | |
| tree | 4712554f8b3266b98f3db71375d6139b30d9fc93 /drivers/media/usb/em28xx/em28xx-cards.c | |
| parent | 0c28dcc054ecbcd16e197bd9bf9b394cc1f691c5 (diff) | |
| download | linux-87b52439cff4a8b745f419b9e99fa68a5533c342.tar.xz | |
[media] em28xx: add basic support for eeproms with 16 bit address width
Newer devices (em2874, em2884, em28174, em25xx, em27[6,7,8]x) use eeproms with
16 bit instead of 8 bit address width.
The used eeprom type depends on the chip type, which makes sure eeproms can't
be damaged.
This patch adds basic support for 16 bit eeproms only, which includes
- reading the content
- calculating the eeprom hash
- displaying the content
The eeprom content uses a different format, for which support will be added with
subsequent patches.
Tested with the "Hauppauge HVR-930C" and the "Speedlink VAD Laplace webcam"
(with additional experimental patches).
Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/usb/em28xx/em28xx-cards.c')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-cards.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-cards.c b/drivers/media/usb/em28xx/em28xx-cards.c index 9332d051bde9..f371dbede27e 100644 --- a/drivers/media/usb/em28xx/em28xx-cards.c +++ b/drivers/media/usb/em28xx/em28xx-cards.c @@ -2183,6 +2183,7 @@ static struct em28xx_hash_table em28xx_i2c_hash[] = { {0x4ba50080, EM2861_BOARD_GADMEI_UTV330PLUS, TUNER_TNF_5335MF}, {0x6b800080, EM2874_BOARD_LEADERSHIP_ISDBT, TUNER_ABSENT}, }; +/* NOTE: introduce a separate hash table for devices with 16 bit eeproms */ /* I2C possible address to saa7115, tvp5150, msp3400, tvaudio */ static unsigned short saa711x_addrs[] = { @@ -3019,11 +3020,13 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev, chip_name = "em2874"; dev->reg_gpio_num = EM2874_R80_GPIO; dev->wait_after_write = 0; + dev->eeprom_addrwidth_16bit = 1; break; case CHIP_ID_EM28174: chip_name = "em28174"; dev->reg_gpio_num = EM2874_R80_GPIO; dev->wait_after_write = 0; + dev->eeprom_addrwidth_16bit = 1; break; case CHIP_ID_EM2883: chip_name = "em2882/3"; @@ -3033,6 +3036,7 @@ static int em28xx_init_dev(struct em28xx *dev, struct usb_device *udev, chip_name = "em2884"; dev->reg_gpio_num = EM2874_R80_GPIO; dev->wait_after_write = 0; + dev->eeprom_addrwidth_16bit = 1; break; default: printk(KERN_INFO DRIVER_NAME |