OMAP4 has module specific context lost registers which
makes it now possible to have module level context loss
count, instead of relying on the powerdomain level context
count.
Add 2 private hwmod api's to update/clear the hwmod/module specific
context lost counters/register.
Signed-off-by: Rajendra Nayak <rnayak@xxxxxx>
---
arch/arm/mach-omap2/omap_hwmod.c | 26 ++++++++++++++++++++++++++
arch/arm/plat-omap/include/plat/omap_hwmod.h | 2 ++
2 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index d713807..d7f9dd1 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1426,6 +1426,32 @@ static int _reset(struct omap_hwmod *oh)
return ret;
}
+static void _update_context_lost(struct omap_hwmod *oh)
+{
+ if (oh->prcm.omap4.context_offs)
+ if (omap4_prminst_read_inst_reg(
+ oh->clkdm->pwrdm.ptr->prcm_partition,
+ oh->clkdm->pwrdm.ptr->prcm_offs,
+ oh->prcm.omap4.context_offs))
+ oh->prcm.omap4.context_lost_counter++;
+}
+
+static void _clear_context_lost(struct omap_hwmod *oh)
+{
+ u32 context_reg;
+
+ if (oh->prcm.omap4.context_offs) {
+ context_reg = omap4_prminst_read_inst_reg(
+ oh->clkdm->pwrdm.ptr->prcm_partition,
+ oh->clkdm->pwrdm.ptr->prcm_offs,
+ oh->prcm.omap4.context_offs);
+ omap4_prminst_write_inst_reg(context_reg,
+ oh->clkdm->pwrdm.ptr->prcm_partition,
+ oh->clkdm->pwrdm.ptr->prcm_offs,
+ oh->prcm.omap4.context_offs);
+ }
+}
+
/**
* _enable - enable an 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 5419f1a..540e424 100644
--- a/arch/arm/plat-omap/include/plat/omap_hwmod.h
+++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h
@@ -363,12 +363,14 @@ struct omap_hwmod_omap2_prcm {
* struct omap_hwmod_omap4_prcm - OMAP4-specific PRCM data
* @clkctrl_reg: PRCM address of the clock control register
* @rstctrl_reg: address of the XXX_RSTCTRL register located in the PRM
+ * context_lost_counter: Count of module level context lost
* @submodule_wkdep_bit: bit shift of the WKDEP range
*/
struct omap_hwmod_omap4_prcm {
u16 clkctrl_offs;
u16 rstctrl_offs;
u16 context_offs;
+ unsigned context_lost_counter;
u8 submodule_wkdep_bit;
u8 modulemode;
};
--
1.7.1
--
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