media: gl861: re-implement I2C adapter logic

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Device I2C adapter is capable of writing and reading large messages.
For I2C writes there is 2 methods: simple for max 2 byte messages and
usb_control_msg() with payload data for larger I2C messages. Add I2C
adapter logic which selects suitable method according to message size.
Add also support for plain I2C read.

Cc: Akihiro TSUKADA <tskd08@gmail.com>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

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Antti Palosaari 2019-08-23 20:53:37 -03:00 • committed by Mauro Carvalho Chehab

parent cecf0bbbcb

commit 1ea76d1656

1 changed files with 159 additions and 57 deletions

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drivers/media/usb/dvb-usb-v2/gl861.c

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