OMAP4: powerdomain: Add pwrdm_clear_all_prev_pwrst
Like OMAP3, OMAP4430 ES2 has additional bitfields in PWRSTST register
which help identify the previous power state entered by the
powerdomain. Add pwrdm_clear_all_prev_pwrst to the OMAP4 powerdomains
implementation to support this.
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
[paul@pwsan.com: clarified commit message]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com>
Tested-by: Kevin Hilman <khilman@deeprootsystems.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
diff --git a/arch/arm/mach-omap2/powerdomain44xx.c b/arch/arm/mach-omap2/powerdomain44xx.c
index 123a25f..2903c7c 100644
--- a/arch/arm/mach-omap2/powerdomain44xx.c
+++ b/arch/arm/mach-omap2/powerdomain44xx.c
@@ -55,6 +55,14 @@
return 0;
}
+static int omap4_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
+{
+ prm_rmw_mod_reg_bits(OMAP4430_LASTPOWERSTATEENTERED_MASK,
+ OMAP4430_LASTPOWERSTATEENTERED_MASK,
+ pwrdm->prcm_offs, OMAP4_PM_PWSTST);
+ return 0;
+}
+
static int omap4_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
{
u32 v;
@@ -155,6 +163,7 @@
.pwrdm_read_pwrst = omap4_pwrdm_read_pwrst,
.pwrdm_read_prev_pwrst = omap4_pwrdm_read_prev_pwrst,
.pwrdm_set_lowpwrstchange = omap4_pwrdm_set_lowpwrstchange,
+ .pwrdm_clear_all_prev_pwrst = omap4_pwrdm_clear_all_prev_pwrst,
.pwrdm_set_logic_retst = omap4_pwrdm_set_logic_retst,
.pwrdm_read_logic_pwrst = omap4_pwrdm_read_logic_pwrst,
.pwrdm_read_logic_retst = omap4_pwrdm_read_logic_retst,