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OMAP: hwmod: add API for slave idlemode setting 

Some HW blocks have errata which requires specific slave idle mode
under certain conditions.

This patch adds an hwmod API to allow setting slave idlemode
ensuring that any SYSCONFIG register updates go through hwmod.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
This commit is contained in:
Kevin Hilman 2010-01-26 20:13:03 -07:00 committed by Paul Walmsley
parent 9799aca203
commit 46273e6f37
2 changed files with 19 additions and 0 deletions
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17
arch/arm/mach-omap2/omap_hwmod.c
View File

@ -992,6 +992,23 @@ void omap_hwmod_writel(u32 v, struct omap_hwmod *oh, u16 reg_offs)
__raw_writel(v, oh->_rt_va + reg_offs); __raw_writel(v, oh->_rt_va + reg_offs);
} }
int omap_hwmod_set_slave_idlemode(struct omap_hwmod *oh, u8 idlemode)
{
u32 v;
int retval = 0;
if (!oh)
return -EINVAL;
v = oh->_sysc_cache;
retval = _set_slave_idlemode(oh, idlemode, &v);
if (!retval)
_write_sysconfig(v, oh);
return retval;
}
/** /**
* omap_hwmod_register - register a struct omap_hwmod * omap_hwmod_register - register a struct omap_hwmod
* @oh: struct omap_hwmod * * @oh: struct omap_hwmod *

2
arch/arm/plat-omap/include/plat/omap_hwmod.h
View File

@ -441,6 +441,8 @@ int omap_hwmod_shutdown(struct omap_hwmod *oh);
int omap_hwmod_enable_clocks(struct omap_hwmod *oh); int omap_hwmod_enable_clocks(struct omap_hwmod *oh);
int omap_hwmod_disable_clocks(struct omap_hwmod *oh); int omap_hwmod_disable_clocks(struct omap_hwmod *oh);
int omap_hwmod_set_slave_idlemode(struct omap_hwmod *oh, u8 idlemode);
int omap_hwmod_reset(struct omap_hwmod *oh); int omap_hwmod_reset(struct omap_hwmod *oh);
void omap_hwmod_ocp_barrier(struct omap_hwmod *oh); void omap_hwmod_ocp_barrier(struct omap_hwmod *oh);