Commit 7f62fe8a authored Jun 02, 2010 by Kai Vehmanen Committed by Sebastian Reichel Mar 31, 2015

HSI: cmt_speech: Add cmt-speech driver



Introduces the cmt-speech driver, which implements
a character device interface for transferring speech
data frames over HSI/SSI.

The driver is used to exchange voice/speech data between
the Nokia N900/N950/N9's modem and its cpu.

Signed-off-by: Kai Vehmanen <kai.vehmanen@nokia.com>
Signed-off-by: Carlos Chinea <carlos.chinea@nokia.com>
Signed-off-by: Joni Lapilainen <joni.lapilainen@gmail.com>

Since the original driver has been written for 2.6.28 some
build fixes and general cleanups have been added by me:

 * fix build for 4.0 kernel
 * replace GFP_ATOMIC with GFP_KERNEL in cs_alloc_cmds()
 * add sanity check for CS_SET_WAKELINE ioctl
 * cleanup driver initialisation
 * rename driver to cmt-speech to be consistent with
   ssi-protocol driver
 * move cs-protocol.h to include/uapi/linux/hsi, since
   it describes a userspace API
 * replace hardcoded channels numbers with values provided
   via the HSI framework (e.g. coming from DT)

Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Tested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

parent b2249129

drivers/hsi/clients/Kconfig

+10 −0

Original line number	Diff line number	Diff line
		@@ -13,6 +13,16 @@ config NOKIA_MODEM

		If unsure, say N.

		config CMT_SPEECH
		tristate "CMT speech"
		depends on HSI && SSI_PROTOCOL
		help
		If you say Y here, you will enable the CMT speech protocol used
		by Nokia modems. If you say M the protocol will be available as
		module named cmt_speech.

		If unsure, say N.

		config SSI_PROTOCOL
		tristate "SSI protocol"
		depends on HSI && PHONET && OMAP_SSI

drivers/hsi/clients/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -4,4 +4,5 @@

		obj-$(CONFIG_NOKIA_MODEM) += nokia-modem.o
		obj-$(CONFIG_SSI_PROTOCOL) += ssi_protocol.o
		obj-$(CONFIG_CMT_SPEECH) += cmt_speech.o
		obj-$(CONFIG_HSI_CHAR) += hsi_char.o