The OMAP2xxx PRM does support a form of powerdomain previous-power-state
tracking; so add it. This allows the power state tracking and debugging
code to do something useful on this platform.
Signed-off-by: Paul Walmsley <paul@xxxxxxxxx>
---
arch/arm/mach-omap2/prm2xxx.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm/mach-omap2/prm2xxx.c b/arch/arm/mach-omap2/prm2xxx.c
index e4cdb69..2d3c905 100644
--- a/arch/arm/mach-omap2/prm2xxx.c
+++ b/arch/arm/mach-omap2/prm2xxx.c
@@ -180,10 +180,22 @@ static int omap2xxx_pwrdm_read_pwrst(struct powerdomain *pwrdm)
return omap2xxx_pwrst_to_common_pwrst(omap2xxx_pwrst);
}
+static int omap2xxx_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
+{
+ u8 omap2xxx_pwrst;
+
+ omap2xxx_pwrst = omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP2_PM_PWSTST,
+ OMAP24XX_LASTSTATEENTERED_MASK);
+
+ return omap2xxx_pwrst_to_common_pwrst(omap2xxx_pwrst);
+}
+
struct pwrdm_ops omap2_pwrdm_operations = {
.pwrdm_set_next_pwrst = omap2xxx_pwrdm_set_next_pwrst,
.pwrdm_read_next_pwrst = omap2xxx_pwrdm_read_next_pwrst,
.pwrdm_read_pwrst = omap2xxx_pwrdm_read_pwrst,
+ .pwrdm_read_prev_pwrst = omap2xxx_pwrdm_read_prev_pwrst,
.pwrdm_set_logic_retst = omap2_pwrdm_set_logic_retst,
.pwrdm_set_mem_onst = omap2_pwrdm_set_mem_onst,
.pwrdm_set_mem_retst = omap2_pwrdm_set_mem_retst,
--
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