From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Hilman Subject: [PATCH/RFC] ARM: OMAP2: PRCM: more init, and clear wakeup events. Date: Thu, 01 Nov 2007 16:11:56 -0700 Message-ID: <20071101231156.378789006@mvista.com> Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-omap-open-source-bounces@linux.omap.com Errors-To: linux-omap-open-source-bounces@linux.omap.com To: linux-omap-open-source@linux.omap.com List-Id: linux-omap@vger.kernel.org More initialization of wake dependencies. Clear PRCM wake-up events after coming out of full-retention. Signed-off-by: Kevin Hilman --- arch/arm/mach-omap2/pm.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) Index: dev/arch/arm/mach-omap2/pm.c =================================================================== --- dev.orig/arch/arm/mach-omap2/pm.c +++ dev/arch/arm/mach-omap2/pm.c @@ -397,7 +397,7 @@ void omap2_allow_sleep(void) static void omap2_enter_full_retention(void) { - u32 sleep_time = 0; + u32 l, sleep_time = 0; /* There is 1 reference hold for all children of the oscillator * clock, the following will remove it. If no one else uses the @@ -450,6 +450,24 @@ no_sleep: clk_enable(osc_ck); + /* clear CORE wake-up events */ + prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1); + prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2); + + /* wakeup domain events */ + l = prm_read_mod_reg(WKUP_MOD, PM_WKST); + l &= 0x5; /* bit 1: GPT1, bit5 GPIO */ + prm_write_mod_reg(l, WKUP_MOD, PM_WKST); + + /* MPU domain wake events */ + l = prm_read_reg(OMAP24XX_PRCM_IRQSTATUS_MPU); + if (l & 0x01) + prm_write_reg(0x01, OMAP24XX_PRCM_IRQSTATUS_MPU); + if (l & 0x20) + prm_write_reg(0x20, OMAP24XX_PRCM_IRQSTATUS_MPU); + + /* Mask future PRCM-to-MPU interrupts */ + prm_write_reg(0x0, OMAP24XX_PRCM_IRQSTATUS_MPU); } static int omap2_i2c_active(void) @@ -654,6 +672,9 @@ static void __init prcm_setup_regs(void) prm_write_mod_reg(OMAP_EN_WKUP, MPU_MOD, PM_WKDEP); prm_write_mod_reg(0, OMAP24XX_DSP_MOD, PM_WKDEP); prm_write_mod_reg(0, GFX_MOD, PM_WKDEP); + prm_write_mod_reg(0, CORE_MOD, PM_WKDEP); + if (cpu_is_omap2430()) + prm_write_mod_reg(0, OMAP2430_MDM_MOD, PM_WKDEP); l = prm_read_mod_reg(CORE_MOD, PM_PWSTCTRL); /* Enable retention for all memory blocks */ --