[alsa-devel] [PATCH 05/20] OMAP: McBSP: Retain McBSP FCLK clockactivity

[Eduardo Valentin]

From: Eero Nurkkala <ext-eero.nurkkala at nokia.com>

FCLK may get autogated so that it prevents the McBSP
to work properly. It is the bit 9 that must be set
for maintaining the McBSP FCLK.

Signed-off-by: Eero Nurkkala <ext-eero.nurkkala at nokia.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin at nokia.com>
Acked-by: Jarkko Nikula <jarkko.nikula at nokia.com>
---
 arch/arm/plat-omap/include/mach/mcbsp.h |    1 +
 arch/arm/plat-omap/mcbsp.c              |    6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/arm/plat-omap/include/mach/mcbsp.h b/arch/arm/plat-omap/include/mach/mcbsp.h
index 57157b4..e3b300c 100644
--- a/arch/arm/plat-omap/include/mach/mcbsp.h
+++ b/arch/arm/plat-omap/include/mach/mcbsp.h
@@ -254,6 +254,7 @@
 #define RDISABLE		0x0001
 
 /********************** McBSP SYSCONFIG bit definitions ********************/
+#define CLOCKACTIVITY(value)	((value)<<8)
 #define SIDLEMODE(value)	((value)<<3)
 #define ENAWAKEUP		0x0004
 #define SOFTRST			0x0002
diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index b64896b..6b39656 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -266,8 +266,8 @@ int omap_mcbsp_request(unsigned int id)
 		u16 syscon;
 
 		syscon = OMAP_MCBSP_READ(mcbsp->io_base, SYSCON);
-		syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03));
-		syscon |= (ENAWAKEUP | SIDLEMODE(0x02));
+		syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03) | CLOCKACTIVITY(0x03));
+		syscon |= (ENAWAKEUP | SIDLEMODE(0x02) | CLOCKACTIVITY(0x02));
 		OMAP_MCBSP_WRITE(mcbsp->io_base, SYSCON, syscon);
 
 		OMAP_MCBSP_WRITE(mcbsp->io_base, WAKEUPEN, WAKEUPEN_ALL);
@@ -331,7 +331,7 @@ void omap_mcbsp_free(unsigned int id)
 		u16 syscon;
 
 		syscon = OMAP_MCBSP_READ(mcbsp->io_base, SYSCON);
-		syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03));
+		syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03) | CLOCKACTIVITY(0x03));
 		OMAP_MCBSP_WRITE(mcbsp->io_base, SYSCON, syscon);
 
 		wakeupen = OMAP_MCBSP_READ(mcbsp->io_base, WAKEUPEN);
-- 
1.6.2.GIT

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