msm: pm: Add power collapse debug counters support.
Add platform device for PC debug counters. These counter stores the
warmboot entry/exit counters for each core on a non-cacheable always
on IMEM memory. This is a useful feature during debug to understand if
the system has correctly warmbooted after a power collapse.
Usage for core0 debug counters:-
counters at address 0x2A03F664 represent no of times PC attempted.
counters at address 0x2A03F66C represent no of times PC failed.
counters at address 0x2A03F668 represent no of times warm boot happened.
no of PC attemps = PC failures + warm boot entries.
Change-Id: I3f78921f1ddd55967284fb7839a98bdb43efbeb9
Signed-off-by: Anji Jonnala <anjir@codeaurora.org>
diff --git a/arch/arm/mach-msm/devices-8960.c b/arch/arm/mach-msm/devices-8960.c
index 181c3d7..1f341a4 100644
--- a/arch/arm/mach-msm/devices-8960.c
+++ b/arch/arm/mach-msm/devices-8960.c
@@ -104,6 +104,24 @@
#define MSM8960_HSUSB_SIZE SZ_4K
#define MSM8960_RPM_MASTER_STATS_BASE 0x10BB00
+#define MSM8960_PC_CNTR_PHYS (MSM8960_IMEM_PHYS + 0x664)
+#define MSM8960_PC_CNTR_SIZE 0x40
+
+static struct resource msm8960_resources_pccntr[] = {
+ {
+ .start = MSM8960_PC_CNTR_PHYS,
+ .end = MSM8960_PC_CNTR_PHYS + MSM8960_PC_CNTR_SIZE,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+struct platform_device msm8960_pc_cntr = {
+ .name = "pc-cntr",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(msm8960_resources_pccntr),
+ .resource = msm8960_resources_pccntr,
+};
+
static struct resource resources_otg[] = {
{
.start = MSM8960_HSUSB_PHYS,