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| author | Hans de Goede <hdegoede@redhat.com> | 2012-05-18 09:36:17 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-07-30 17:56:26 -0300 |
| commit | 31a62d415726d94bae5caf5f2e50232aa06babf6 (patch) | |
| tree | 124ec997e8674c1d6ee19d1e3e4714e8da4df1ac /sound/i2c | |
| parent | 9bc31633c20ca6a49071f2162c232ae556151cc2 (diff) | |
| download | lwn-31a62d415726d94bae5caf5f2e50232aa06babf6.tar.gz lwn-31a62d415726d94bae5caf5f2e50232aa06babf6.zip | |
[media] snd_tea575x: Add write_/read_val operations
Some devices which use the tea575x tuner chip don't allow bit banging the
lines, instead they offer a method to directly set / get the contents of the
25 bit shift-register in the chip. Notably the Griffin radioSHARK USB radio
receiver does this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
CC: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'sound/i2c')
| -rw-r--r-- | sound/i2c/other/tea575x-tuner.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/i2c/other/tea575x-tuner.c b/sound/i2c/other/tea575x-tuner.c index b29b88f93c9e..080aae9d1198 100644 --- a/sound/i2c/other/tea575x-tuner.c +++ b/sound/i2c/other/tea575x-tuner.c @@ -71,6 +71,9 @@ static void snd_tea575x_write(struct snd_tea575x *tea, unsigned int val) u16 l; u8 data; + if (tea->ops->write_val) + return tea->ops->write_val(tea, val); + tea->ops->set_direction(tea, 1); udelay(16); @@ -94,6 +97,9 @@ static u32 snd_tea575x_read(struct snd_tea575x *tea) u16 l, rdata; u32 data = 0; + if (tea->ops->read_val) + return tea->ops->read_val(tea); + tea->ops->set_direction(tea, 0); tea->ops->set_pins(tea, 0); udelay(16); |