From: ext Rajendra Nayak <rnayak@xxxxxx>
This workaround shouldn't be needed when all drivers are configuring
their sysconfig registers properly and using their clocks properly.
Signed-off-by: Jouni Hogander <jouni.hogander@xxxxxxxxx>
---
arch/arm/mach-omap2/pm34xx.c | 31 +++++++++++++++++++++++++++++++
1 files changed, 31 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index fc72c11..bca1994 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -174,10 +174,41 @@ static void omap_sram_idle(void)
omap2_gpio_resume_after_retention();
}
+static int omap3_fclks_active(void)
+{
+ u32 fck_core1 = 0, fck_core3 = 0, fck_sgx = 0, fck_dss = 0,
+ fck_cam = 0, fck_per = 0, fck_usbhost = 0;
+
+ fck_core1 = cm_read_mod_reg(CORE_MOD,
+ CM_FCLKEN1);
+ if (is_sil_rev_greater_than(OMAP3430_REV_ES1_0)) {
+ fck_core3 = cm_read_mod_reg(CORE_MOD,
+ OMAP3430ES2_CM_FCLKEN3);
+ fck_sgx = cm_read_mod_reg(OMAP3430ES2_SGX_MOD,
+ CM_FCLKEN);
+ fck_usbhost = cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD,
+ CM_FCLKEN);
+ } else
+ fck_sgx = cm_read_mod_reg(GFX_MOD,
+ OMAP3430ES2_CM_FCLKEN3);
+ fck_dss = cm_read_mod_reg(OMAP3430_DSS_MOD,
+ CM_FCLKEN);
+ fck_cam = cm_read_mod_reg(OMAP3430_CAM_MOD,
+ CM_FCLKEN);
+ fck_per = cm_read_mod_reg(OMAP3430_PER_MOD,
+ CM_FCLKEN);
+ if (fck_core1 | fck_core3 | fck_sgx | fck_dss |
+ fck_cam | fck_per | fck_usbhost)
+ return 1;
+ return 0;
+}
+
static int omap3_can_sleep(void)
{
if (!enable_dyn_sleep)
return 0;
+ if (omap3_fclks_active())
+ return 0;
if (atomic_read(&sleep_block) > 0)
return 0;
return 1;
--
1.5.4.3
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