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| author | Kevin Hilman <khilman@deeprootsystems.com> | 2010-01-26 20:13:03 -0700 |
|---|---|---|
| committer | Paul Walmsley <paul@pwsan.com> | 2010-01-26 20:13:03 -0700 |
| commit | 46273e6f37bdf3801363986e2228350ecad19059 (patch) | |
| tree | f115af81da2b8a8289a84b7a535d60c800784b44 | |
| parent | 9799aca2032ad53418ff4bc0d1a6f2cb4f79b6c0 (diff) | |
| download | linux-3.10-46273e6f37bdf3801363986e2228350ecad19059.tar.gz linux-3.10-46273e6f37bdf3801363986e2228350ecad19059.tar.bz2 linux-3.10-46273e6f37bdf3801363986e2228350ecad19059.zip | |
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>
| -rw-r--r-- | arch/arm/mach-omap2/omap_hwmod.c | 17 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/omap_hwmod.h | 2 |
2 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index ad884c0aaa4..70912d1c71e 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -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); } +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 * @oh: struct omap_hwmod * diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h index 33933256a22..921990e2a29 100644 --- a/arch/arm/plat-omap/include/plat/omap_hwmod.h +++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h @@ -441,6 +441,8 @@ int omap_hwmod_shutdown(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_set_slave_idlemode(struct omap_hwmod *oh, u8 idlemode); + int omap_hwmod_reset(struct omap_hwmod *oh); void omap_hwmod_ocp_barrier(struct omap_hwmod *oh); |