[PATCH] ARM: OMAP3: Initialize XCCR and RCCR McBSP registers for McBSP DAI driver

[Lopez Cruz, Misael]

This patch enables XCCR and RCCR McBSP register writing in OMAP 24xx/34xx
platforms. It also explicitly initializes those registers to their default
values in ASoC McBSP DAI driver.

Signed-off-by: Misael Lopez Cruz <x0052...@ti.com>
---
 arch/arm/plat-omap/include/mach/mcbsp.h |    6 ++++++
 arch/arm/plat-omap/mcbsp.c              |    4 ++++
 sound/soc/omap/omap-mcbsp.c             |    4 ++++
 3 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/arch/arm/plat-omap/include/mach/mcbsp.h 
b/arch/arm/plat-omap/include/mach/mcbsp.h
index 6a0d1a0..5885f3a 100644
--- a/arch/arm/plat-omap/include/mach/mcbsp.h
+++ b/arch/arm/plat-omap/include/mach/mcbsp.h
@@ -231,11 +231,16 @@
 #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 +271,8 @@ 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 af33fc7..d71b30b 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_omap24xx() || cpu_is_omap34xx()) {
+               OMAP_MCBSP_WRITE(io_base, XCCR, config->xccr);
+               OMAP_MCBSP_WRITE(io_base, RCCR, config->rccr);
+       }
 }
 EXPORT_SYMBOL(omap_mcbsp_config);
 
diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index 8485a8a..2e7000d 100644
--- a/sound/soc/omap/omap-mcbsp.c
+++ b/sound/soc/omap/omap-mcbsp.c
@@ -295,6 +295,10 @@ static int omap_mcbsp_dai_set_dai_fmt(struct snd_soc_dai 
*cpu_dai,
        regs->spcr1     |= RINTM(3);
        regs->rcr2      |= RFIG;
        regs->xcr2      |= XFIG;
+       if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
+               regs->xccr = DXENDLY(1) | XDMAEN;
+               regs->rccr = RFULL_CYCLE | RDMAEN;
+       }
 
        switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
        case SND_SOC_DAIFMT_I2S:
-- 
1.5.4.3
--
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