From ad0c63f1d623ea9d3e0c0521d5ce9cd522c4e1f0 Mon Sep 17 00:00:00 2001 From: "stanley.miao" Date: Mon, 2 Aug 2010 14:21:40 +0300 Subject: [PATCH] OMAP3: AM3505/3517 do not have IO wakeup capability 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 Acked-by: Kevin Hilman Signed-off-by: Tony Lindgren --- 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 c7bf0e1c4d9c..ccaa1ed8e0f1 100644 --- a/arch/arm/mach-omap2/id.c +++ b/arch/arm/mach-omap2/id.c @@ -179,6 +179,8 @@ static 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 b88737fd6cfe..fb4994ad622e 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 75141742300c..aa2f4f079f57 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