diff options
| author | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-04-17 21:42:14 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-04-24 14:09:42 -0300 |
| commit | 89b329ef9d7cc16ed46fc991b21b2d45e7bf452c (patch) | |
| tree | 1cd9ce2b15423282d50e6a96ed5ff789030e7cdf /drivers/media/video/em28xx/em28xx-cards.c | |
| parent | 7640ea99339c687864f6131598e2eee2ca73cb9c (diff) | |
| download | lwn-89b329ef9d7cc16ed46fc991b21b2d45e7bf452c.tar.gz lwn-89b329ef9d7cc16ed46fc991b21b2d45e7bf452c.zip | |
V4L/DVB (7610): em28xx: Select reg wait time based on chip ID
This is more conservative than just removing the msleep() from
em28xx_write_regs_req(), since some old hardware may still need it.
So, it will remove the sleep time only for those chips where this
removal were tested.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/em28xx/em28xx-cards.c')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-cards.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c index 7dfea3ac9b2f..0c71e599c140 100644 --- a/drivers/media/video/em28xx/em28xx-cards.c +++ b/drivers/media/video/em28xx/em28xx-cards.c @@ -525,6 +525,20 @@ static void em28xx_set_model(struct em28xx *dev) */ void em28xx_pre_card_setup(struct em28xx *dev) { + int rc; + + dev->wait_after_write = 5; + rc = em28xx_read_reg(dev, CHIPID_REG); + if (rc > 0) { + switch (rc) { + case 36: + em28xx_info("chip ID is em2882/em2883\n"); + dev->wait_after_write = 0; + break; + default: + em28xx_info("em28xx chip ID = %d\n", rc); + } + } em28xx_set_model(dev); /* request some modules */ |