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OMAP: McBSP: Retain McBSP FCLK clockactivity 

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@nokia.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@nokia.com>
Acked-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Eero Nurkkala 2009-08-20 16:18:17 +03:00 committed by Mark Brown
parent d9a9b3f5f7
commit 2ba93f8fa7
2 changed files with 4 additions and 3 deletions
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1
arch/arm/plat-omap/include/mach/mcbsp.h
View File

@ -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

6
arch/arm/plat-omap/mcbsp.c
View File

@ -316,8 +316,8 @@ static inline void omap34xx_mcbsp_request(struct omap_mcbsp *mcbsp)
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, XRDYEN | RRDYEN);
@ -333,7 +333,7 @@ static inline void omap34xx_mcbsp_free(struct omap_mcbsp *mcbsp)
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);
OMAP_MCBSP_WRITE(mcbsp->io_base, WAKEUPEN, 0);