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authorLinus Torvalds <torvalds@linux-foundation.org>2011-07-26 17:10:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-26 17:10:20 -0700
commit62c9072bee2272232d0ed92dc8148c48c1f10f8e (patch)
tree5c64b479af4b97cbc21db3d0a2a0afdae60d9e8f /arch/arm/mach-omap2/omap_hwmod.c
parent4b30b6f23a1a59cda29cc12566eb4f32a22a8069 (diff)
parentc2fda22207e2977d0b80eac58a9004b6f8beed6d (diff)
downloadtalos-obmc-linux-62c9072bee2272232d0ed92dc8148c48c1f10f8e.tar.gz
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Merge branch 'next/fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
* 'next/fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (24 commits) ASoC: omap: McBSP: fix build breakage on OMAP1 OMAP: hwmod: fix the i2c-reset timeout during bootup I2C: OMAP2+: add correct functionality flags to all omap2plus i2c dev_attr I2C: OMAP2+: Tag all OMAP2+ hwmod defintions with I2C IP revision I2C: OMAP1/OMAP2+: create omap I2C functionality flags for each cpu_... test I2C: OMAP2+: Introduce I2C IP versioning constants I2C: OMAP2+: increase omap_i2c_dev_attr flags from u8 to u32 I2C: OMAP2+: Set hwmod flags to only allow 16-bit accesses to i2c OMAP4: hwmod data: Change DSS main_clk scheme OMAP4: powerdomain data: Remove unsupported MPU powerdomain state OMAP4: clock data: Keep GPMC clocks always enabled and hardware managed OMAP4: powerdomain data: Fix core mem states and missing cefuse flag OMAP2+: PM: Initialise sleep_switch to a non-valid value OMAP4: hwmod data: Modify DSS opt clocks OMAP4: iommu: fix clock name omap: iovmm: s/sg_dma_len(sg)/sg->length/ omap: iommu: fix pte programming arm: omap3: cm-t35: fix slow path warning arm: omap3: cm-t35: minor comments fixes omap: ZOOM: QUART: Request reset GPIO ...
Diffstat (limited to 'arch/arm/mach-omap2/omap_hwmod.c')
-rw-r--r--arch/arm/mach-omap2/omap_hwmod.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 7d242c9e2a2c..02b6016393a8 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1656,6 +1656,33 @@ void omap_hwmod_write(u32 v, struct omap_hwmod *oh, u16 reg_offs)
}
/**
+ * omap_hwmod_softreset - reset a module via SYSCONFIG.SOFTRESET bit
+ * @oh: struct omap_hwmod *
+ *
+ * This is a public function exposed to drivers. Some drivers may need to do
+ * some settings before and after resetting the device. Those drivers after
+ * doing the necessary settings could use this function to start a reset by
+ * setting the SYSCONFIG.SOFTRESET bit.
+ */
+int omap_hwmod_softreset(struct omap_hwmod *oh)
+{
+ u32 v;
+ int ret;
+
+ if (!oh || !(oh->_sysc_cache))
+ return -EINVAL;
+
+ v = oh->_sysc_cache;
+ ret = _set_softreset(oh, &v);
+ if (ret)
+ goto error;
+ _write_sysconfig(v, oh);
+
+error:
+ return ret;
+}
+
+/**
* omap_hwmod_set_slave_idlemode - set the hwmod's OCP slave idlemode
* @oh: struct omap_hwmod *
* @idlemode: SIDLEMODE field bits (shifted to bit 0)
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