V4L/DVB: radio: add support for SAA7706H Car Radio DSP

Initial support for the SAA7706H Car Radio DSP.

It is a I2C device and currently the mute control is supported.

When the device is unmuted it is brought out of reset and initiated using
the proposed intialisation sequence.

When muted the DSP is brought into reset state.

[akpm@linux-foundation.org: include delay.h]

Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com>
Cc: Douglas Schilling Landgraf <dougsland@gmail.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
index 3f40f375981b..e5f0d7a8dd0b 100644
--- a/drivers/media/radio/Kconfig
+++ b/drivers/media/radio/Kconfig
@@ -417,6 +417,18 @@ config RADIO_TEA5764_XTAL
           Say Y here if TEA5764 have a 32768 Hz crystal in circuit, say N
           here if TEA5764 reference frequency is connected in FREQIN.
 
+config RADIO_SAA7706H
+        tristate "SAA7706H Car Radio DSP"
+        depends on I2C && VIDEO_V4L2
+        ---help---
+          Say Y here if you want to use the SAA7706H Car radio Digital
+          Signal Processor, found for instance on the Russellville development
+          board. On the russellville the device is connected to internal
+          timberdale I2C bus.
+
+          To compile this driver as a module, choose M here: the
+          module will be called SAA7706H.
+
 config RADIO_TEF6862
         tristate "TEF6862 Car Radio Enhanced Selectivity Tuner"
         depends on I2C && VIDEO_V4L2