AM3505/3517 doesn't have IO wakeup capability, so we do not need to set
the bit OMAP3430_EN_IO and the bit OMAP3430_EN_IO_CHAIN in the register
PM_WKEN_WKUP when the system enters suspend state.
Tested on AM3517EVM and OMAP3530EVM.
Signed-off-by: Stanley.Miao <stanley.m...@windriver.com>
---
arch/arm/mach-omap2/id.c | 2 ++
arch/arm/mach-omap2/pm34xx.c | 7 ++++---
arch/arm/plat-omap/include/plat/cpu.h | 2 ++
3 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index 37b8a1a..67bd971 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -179,6 +179,8 @@ void __init omap3_check_features(void)
OMAP3_CHECK_FEATURE(status, ISP);
if (cpu_is_omap3630())
omap3_features |= OMAP3_HAS_192MHZ_CLK;
+ if (!cpu_is_omap3505() && !cpu_is_omap3517())
+ omap3_features |= OMAP3_HAS_IO_WAKEUP;
/*
* TODO: Get additional info (where applicable)
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index b88737f..fb4994a 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -385,8 +385,9 @@ void omap_sram_idle(void)
/* Enable IO-PAD and IO-CHAIN wakeups */
per_next_state = pwrdm_read_next_pwrst(per_pwrdm);
core_next_state = pwrdm_read_next_pwrst(core_pwrdm);
- if (per_next_state < PWRDM_POWER_ON ||
- core_next_state < PWRDM_POWER_ON) {
+ if (omap3_has_io_wakeup() && \
+ (per_next_state < PWRDM_POWER_ON ||
+ core_next_state < PWRDM_POWER_ON)) {
prm_set_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, PM_WKEN);
omap3_enable_io_chain();
}
@@ -479,7 +480,7 @@ void omap_sram_idle(void)
}
/* Disable IO-PAD and IO-CHAIN wakeup */
- if (core_next_state < PWRDM_POWER_ON) {
+ if (omap3_has_io_wakeup() && core_next_state < PWRDM_POWER_ON) {
prm_clear_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, PM_WKEN);
omap3_disable_io_chain();
}
diff --git a/arch/arm/plat-omap/include/plat/cpu.h
b/arch/arm/plat-omap/include/plat/cpu.h
index 7514174..aa2f4f0 100644
--- a/arch/arm/plat-omap/include/plat/cpu.h
+++ b/arch/arm/plat-omap/include/plat/cpu.h
@@ -444,6 +444,7 @@ extern u32 omap3_features;
#define OMAP3_HAS_NEON BIT(3)
#define OMAP3_HAS_ISP BIT(4)
#define OMAP3_HAS_192MHZ_CLK BIT(5)
+#define OMAP3_HAS_IO_WAKEUP BIT(6)
#define OMAP3_HAS_FEATURE(feat,flag) \
static inline unsigned int omap3_has_ ##feat(void) \
@@ -457,5 +458,6 @@ OMAP3_HAS_FEATURE(iva, IVA)
OMAP3_HAS_FEATURE(neon, NEON)
OMAP3_HAS_FEATURE(isp, ISP)
OMAP3_HAS_FEATURE(192mhz_clk, 192MHZ_CLK)
+OMAP3_HAS_FEATURE(io_wakeup, IO_WAKEUP)
#endif
--
1.5.4.3
--
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