From mboxrd@z Thu Jan 1 00:00:00 1970 From: ryan@bluewatersys.com (Ryan Mallon) Date: Wed, 26 May 2010 17:09:45 +1200 Subject: [RFC PATCH v2 0/3] ep93xx i2s audio Message-ID: <1274850588-30460-1-git-send-email-ryan@bluewatersys.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The following patch series adds support for i2s audio on the ep93xx, with the Snapper CL15 used as an example implementation. I have created psuedo clocks for sclk and lrclk as suggested by Hartley/Mark. This moves the sdiv/lrdiv calculation into ep93xx_i2s_hw_parms. The ep93xx documentation implies that lrclk is gated for unused bits (ie if lrdiv > word length). If this is true for all ep93xx i2s setups then the lrclk/sclk's could be replaced by a single audio rate clock. I have fixed the enabling/disabling of the i2s peripheral, which corrects the problem I was having with playback sometimes resulting in noise. I have also made a number of changes suggested from the first round of patches. Ryan Mallon (3): ep93xx i2s audio driver ep93xx i2s core support ep93xx i2s audio snapper cl15 support arch/arm/mach-ep93xx/clock.c | 69 ++++- arch/arm/mach-ep93xx/core.c | 31 ++ arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h | 10 + arch/arm/mach-ep93xx/include/mach/platform.h | 1 + arch/arm/mach-ep93xx/snappercl15.c | 1 + sound/soc/Kconfig | 1 + sound/soc/Makefile | 1 + sound/soc/ep93xx/Kconfig | 18 + sound/soc/ep93xx/Makefile | 11 + sound/soc/ep93xx/ep93xx-i2s.c | 489 +++++++++++++++++++++++ sound/soc/ep93xx/ep93xx-i2s.h | 25 ++ sound/soc/ep93xx/ep93xx-pcm.c | 323 +++++++++++++++ sound/soc/ep93xx/ep93xx-pcm.h | 22 + sound/soc/ep93xx/snappercl15.c | 143 +++++++ 14 files changed, 1144 insertions(+), 1 deletions(-) create mode 100644 sound/soc/ep93xx/Kconfig create mode 100644 sound/soc/ep93xx/Makefile create mode 100644 sound/soc/ep93xx/ep93xx-i2s.c create mode 100644 sound/soc/ep93xx/ep93xx-i2s.h create mode 100644 sound/soc/ep93xx/ep93xx-pcm.c create mode 100644 sound/soc/ep93xx/ep93xx-pcm.h create mode 100644 sound/soc/ep93xx/snappercl15.c