From 3127f8f8595a064b3f1a1837fea2177902589ac3 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Thu, 15 Jan 2009 13:09:54 +0200 Subject: [PATCH] ARM: OMAP: Fix ASoC by enabling writes to XCCR and RCCR McBSP registers, v3 This patch enables writing to McBSP Transmit Configuration Control Register (XCCR) and Receive Configuration Control Register (RCCR) for 2430/34xx platforms. It also adds XCCR, RCCR entries in McBSP register configuration structure and bit definitions for both registers. If we enable the writing to CCR registers for 2430/34xx and don't set the default values (setting 0 as a consequence) in ASoC driver, the Transmit/Receive DMA mode gets disabled and the the transmission/reception doesn't happen, ending with a "write error: Input/Output error" when playing with 'aplay'. Also define dummy CCR registers for omap1. Cc: Jarkko Nikula Signed-off-by: Misael Lopez Cruz Signed-off-by: Tony Lindgren --- arch/arm/plat-omap/include/mach/mcbsp.h | 11 +++++++++++ arch/arm/plat-omap/mcbsp.c | 4 ++++ 2 files changed, 15 insertions(+) diff --git a/arch/arm/plat-omap/include/mach/mcbsp.h b/arch/arm/plat-omap/include/mach/mcbsp.h index 6a0d1a0a24a..eef873db3d4 100644 --- a/arch/arm/plat-omap/include/mach/mcbsp.h +++ b/arch/arm/plat-omap/include/mach/mcbsp.h @@ -87,6 +87,10 @@ #define OMAP_MCBSP_REG_XCERG 0x3A #define OMAP_MCBSP_REG_XCERH 0x3C +/* Dummy defines, these are not available on omap1 */ +#define OMAP_MCBSP_REG_XCCR 0x00 +#define OMAP_MCBSP_REG_RCCR 0x00 + #define AUDIO_MCBSP_DATAWRITE (OMAP1510_MCBSP1_BASE + OMAP_MCBSP_REG_DXR1) #define AUDIO_MCBSP_DATAREAD (OMAP1510_MCBSP1_BASE + OMAP_MCBSP_REG_DRR1) @@ -231,11 +235,16 @@ #define XPBBLK(value) ((value)<<7) /* Bits 7:8 */ /*********************** McBSP XCCR bit definitions *************************/ +#define EXTCLKGATE 0x8000 +#define PPCONNECT 0x4000 +#define DXENDLY(value) ((value)<<12) /* Bits 12:13 */ +#define XFULL_CYCLE 0x0800 #define DILB 0x0020 #define XDMAEN 0x0008 #define XDISABLE 0x0001 /********************** McBSP RCCR bit definitions *************************/ +#define RFULL_CYCLE 0x0800 #define RDMAEN 0x0008 #define RDISABLE 0x0001 @@ -267,6 +276,8 @@ struct omap_mcbsp_reg_cfg { u16 rcerh; u16 xcerg; u16 xcerh; + u16 xccr; + u16 rccr; }; typedef enum { diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c index af33fc713e1..f2401a831f9 100644 --- a/arch/arm/plat-omap/mcbsp.c +++ b/arch/arm/plat-omap/mcbsp.c @@ -173,6 +173,10 @@ void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg *config) OMAP_MCBSP_WRITE(io_base, MCR2, config->mcr2); OMAP_MCBSP_WRITE(io_base, MCR1, config->mcr1); OMAP_MCBSP_WRITE(io_base, PCR0, config->pcr0); + if (cpu_is_omap2430() || cpu_is_omap34xx()) { + OMAP_MCBSP_WRITE(io_base, XCCR, config->xccr); + OMAP_MCBSP_WRITE(io_base, RCCR, config->rccr); + } } EXPORT_SYMBOL(omap_mcbsp_config); -- 2.41.0