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ASoC: Samsung: Add common I2S driver

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The I2S controllers since S3C64XX are incremental revisions, with
a new feature added to the last one. The programming i/f doesn't
conflict between these revisions, so it is possible to have one
common driver that could manage various versions of I2S (v3, 4 & 5)

Signed-off-by: Jassi Brar <jassi.brar@samsung.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Jassi Brar 2010-11-22 15:36:59 +09:00 committed by Mark Brown
parent 0068402c58
commit 1c7ac01807
4 changed files with 1290 additions and 0 deletions
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3
sound/soc/s3c24xx/Kconfig
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@ -41,6 +41,9 @@ config SND_S5P_SOC_SPDIF
tristate tristate
select SND_SOC_SPDIF select SND_SOC_SPDIF
config SND_SAMSUNG_I2S
tristate
config SND_S3C24XX_SOC_NEO1973_WM8753 config SND_S3C24XX_SOC_NEO1973_WM8753
tristate "SoC I2S Audio support for NEO1973 - WM8753" tristate "SoC I2S Audio support for NEO1973 - WM8753"
depends on SND_S3C24XX_SOC && MACH_NEO1973_GTA01 depends on SND_S3C24XX_SOC && MACH_NEO1973_GTA01

2
sound/soc/s3c24xx/Makefile
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@ -8,6 +8,7 @@ snd-soc-s3c64xx-i2s-v4-objs := s3c64xx-i2s-v4.o
snd-soc-s3c-i2s-v2-objs := s3c-i2s-v2.o snd-soc-s3c-i2s-v2-objs := s3c-i2s-v2.o
snd-soc-samsung-spdif-objs := spdif.o snd-soc-samsung-spdif-objs := spdif.o
snd-soc-pcm-objs := pcm.o snd-soc-pcm-objs := pcm.o
snd-soc-i2s-objs := i2s.o
obj-$(CONFIG_SND_S3C24XX_SOC) += snd-soc-s3c24xx.o obj-$(CONFIG_SND_S3C24XX_SOC) += snd-soc-s3c24xx.o
obj-$(CONFIG_SND_S3C24XX_SOC_I2S) += snd-soc-s3c24xx-i2s.o obj-$(CONFIG_SND_S3C24XX_SOC_I2S) += snd-soc-s3c24xx-i2s.o
@ -18,6 +19,7 @@ obj-$(CONFIG_SND_S3C64XX_SOC_I2S_V4) += snd-soc-s3c64xx-i2s-v4.o
obj-$(CONFIG_SND_S3C_I2SV2_SOC) += snd-soc-s3c-i2s-v2.o obj-$(CONFIG_SND_S3C_I2SV2_SOC) += snd-soc-s3c-i2s-v2.o
obj-$(CONFIG_SND_S5P_SOC_SPDIF) += snd-soc-samsung-spdif.o obj-$(CONFIG_SND_S5P_SOC_SPDIF) += snd-soc-samsung-spdif.o
obj-$(CONFIG_SND_S3C_SOC_PCM) += snd-soc-pcm.o obj-$(CONFIG_SND_S3C_SOC_PCM) += snd-soc-pcm.o
obj-$(CONFIG_SND_SAMSUNG_I2S) += snd-soc-i2s.o
# S3C24XX Machine Support # S3C24XX Machine Support
snd-soc-jive-wm8750-objs := jive_wm8750.o snd-soc-jive-wm8750-objs := jive_wm8750.o

1256
sound/soc/s3c24xx/i2s.c Normal file
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29
sound/soc/s3c24xx/i2s.h Normal file
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@ -0,0 +1,29 @@
/* sound/soc/s3c24xx/i2s.h
*
* ALSA SoC Audio Layer - Samsung I2S Controller driver
*
* Copyright (c) 2010 Samsung Electronics Co. Ltd.
* Jaswinder Singh <jassi.brar@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __SND_SOC_SAMSUNG_I2S_H
#define __SND_SOC_SAMSUNG_I2S_H
/*
* Maximum number of I2S blocks that any SoC can have.
* The secondary interface of a CPU dai(if there exists any),
* is indexed at [cpu-dai's ID + SAMSUNG_I2S_SECOFF]
*/
#define SAMSUNG_I2S_SECOFF 4
#define SAMSUNG_I2S_DIV_BCLK 1
#define SAMSUNG_I2S_RCLKSRC_0 0
#define SAMSUNG_I2S_RCLKSRC_1 1
#define SAMSUNG_I2S_CDCLK 2
#endif /* __SND_SOC_SAMSUNG_I2S_H */