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| author | Paul Walmsley | 2009-12-09 00:34:15 +0100 |
|---|---|---|
| committer | paul | 2009-12-12 01:00:43 +0100 |
| commit | 726072e5dd459e3831d1dd4308ba469ff3ded419 (patch) | |
| tree | 1e79dcd2e26bcb3eb3fd232d30e17a83f0e73c48 /arch/arm/plat-omap/include/plat/omap_hwmod.h | |
| parent | OMAP3 hwmod: reprogram OCP_SYSCONFIG register after setting SOFTRESET (diff) | |
| download | kernel-qcow2-linux-726072e5dd459e3831d1dd4308ba469ff3ded419.tar.gz kernel-qcow2-linux-726072e5dd459e3831d1dd4308ba469ff3ded419.tar.xz kernel-qcow2-linux-726072e5dd459e3831d1dd4308ba469ff3ded419.zip | |
OMAP3 hwmod: Add automatic OCP_SYSCONFIG AUTOIDLE handling
This patch fills in the OCP_SYSCONFIG.AUTOIDLE handling in the OMAP
hwmod code.
After this patch, the hwmod code will set the module AUTOIDLE bit
(generally <module>.OCP_SYSCONFIG.AUTOIDLE) to 1 by default upon
enable. If the hwmod flag HWMOD_NO_OCP_AUTOIDLE is set, AUTOIDLE will
be set to 0 upon enable. Upon module disable, AUTOIDLE will be set to
1.
Enabling module autoidle should save some power. The only reason to
not set the OCP_SYSCONFIG.AUTOIDLE bit is if there is a bug in the
module RTL, e.g., the MPUINTC block on OMAP3.
Comments from Kevin Hilman <khilman@deeprootsystems.com> inspired this patch,
and Kevin tested an earlier version of this patch.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/plat-omap/include/plat/omap_hwmod.h')
| -rw-r--r-- | arch/arm/plat-omap/include/plat/omap_hwmod.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h index dbdd123eca16..643a9727de35 100644 --- a/arch/arm/plat-omap/include/plat/omap_hwmod.h +++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h @@ -50,6 +50,8 @@ struct omap_device; #define SYSC_ENAWAKEUP_MASK (1 << SYSC_ENAWAKEUP_SHIFT) #define SYSC_SOFTRESET_SHIFT 1 #define SYSC_SOFTRESET_MASK (1 << SYSC_SOFTRESET_SHIFT) +#define SYSC_AUTOIDLE_SHIFT 0 +#define SYSC_AUTOIDLE_MASK (1 << SYSC_AUTOIDLE_SHIFT) /* OCP SYSSTATUS bit shifts/masks */ #define SYSS_RESETDONE_SHIFT 0 @@ -294,13 +296,17 @@ struct omap_hwmod_omap4_prcm { * SDRAM controller, etc. * HWMOD_INIT_NO_IDLE: don't idle this module at boot - important for SDRAM * controller, etc. + * HWMOD_NO_AUTOIDLE: disable module autoidle (OCP_SYSCONFIG.AUTOIDLE) + * when module is enabled, rather than the default, which is to + * enable autoidle * HWMOD_SET_DEFAULT_CLOCKACT: program CLOCKACTIVITY bits at startup */ #define HWMOD_SWSUP_SIDLE (1 << 0) #define HWMOD_SWSUP_MSTANDBY (1 << 1) #define HWMOD_INIT_NO_RESET (1 << 2) #define HWMOD_INIT_NO_IDLE (1 << 3) -#define HWMOD_SET_DEFAULT_CLOCKACT (1 << 4) +#define HWMOD_NO_OCP_AUTOIDLE (1 << 4) +#define HWMOD_SET_DEFAULT_CLOCKACT (1 << 5) /* * omap_hwmod._int_flags definitions |