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| author |   Tero Kristo <t-kristo@ti.com> | 2014-02-26 15:31:05 +0200 |
|---|---|---|
| committer | Tero Kristo <t-kristo@ti.com> | 2014-07-04 17:02:16 +0300 |
| commit | 6bdc4b44b3acc95655b061a88c951c6d9742d8e3 (patch) | |
| tree | 025428926f739a7fcc448581706fb63d44ed8614 | |
| parent | ARM: OMAP3: PRM: add API for saving PRM scratchpad contents (diff) | |
| download | linux-dev-6bdc4b44b3acc95655b061a88c951c6d9742d8e3.tar.xz linux-dev-6bdc4b44b3acc95655b061a88c951c6d9742d8e3.zip | |
ARM: OMAP24xx: PRM: add API for clearing wakeup status bits
This helps to isolate the PRM into its own driver.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
| -rw-r--r-- | arch/arm/mach-omap2/pm24xx.c | 31 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/prm2xxx.c | 18 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/prm2xxx.h | 1 |
3 files changed, 32 insertions, 18 deletions
diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c index a5ea988ff340..d76694b7a591 100644 --- a/arch/arm/mach-omap2/pm24xx.c +++ b/arch/arm/mach-omap2/pm24xx.c @@ -75,9 +75,9 @@ static int omap2_enter_full_retention(void) /* Clear old wake-up events */ /* REVISIT: These write to reserved bits? */ - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1); - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2); - omap2_prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST); + omap2xxx_prm_clear_mod_irqs(CORE_MOD, PM_WKST1, ~0); + omap2xxx_prm_clear_mod_irqs(CORE_MOD, OMAP24XX_PM_WKST2, ~0); + omap2xxx_prm_clear_mod_irqs(WKUP_MOD, PM_WKST, ~0); pwrdm_set_next_pwrst(core_pwrdm, PWRDM_POWER_RET); pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_RET); @@ -104,23 +104,18 @@ no_sleep: clk_enable(osc_ck); /* clear CORE wake-up events */ - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1); - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2); + omap2xxx_prm_clear_mod_irqs(CORE_MOD, PM_WKST1, ~0); + omap2xxx_prm_clear_mod_irqs(CORE_MOD, OMAP24XX_PM_WKST2, ~0); /* wakeup domain events - bit 1: GPT1, bit5 GPIO */ - omap2_prm_clear_mod_reg_bits(0x4 | 0x1, WKUP_MOD, PM_WKST); + omap2xxx_prm_clear_mod_irqs(WKUP_MOD, PM_WKST, 0x4 | 0x1); /* MPU domain wake events */ - l = omap2_prm_read_mod_reg(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); - if (l & 0x01) - omap2_prm_write_mod_reg(0x01, OCP_MOD, - OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); - if (l & 0x20) - omap2_prm_write_mod_reg(0x20, OCP_MOD, - OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); + omap2xxx_prm_clear_mod_irqs(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET, + 0x1); - /* Mask future PRCM-to-MPU interrupts */ - omap2_prm_write_mod_reg(0x0, OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); + omap2xxx_prm_clear_mod_irqs(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET, + 0x20); pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON); pwrdm_set_next_pwrst(core_pwrdm, PWRDM_POWER_ON); @@ -148,9 +143,9 @@ static void omap2_enter_mpu_retention(void) * it is in retention mode. */ if (omap2_allow_mpu_retention()) { /* REVISIT: These write to reserved bits? */ - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1); - omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2); - omap2_prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST); + omap2xxx_prm_clear_mod_irqs(CORE_MOD, PM_WKST1, ~0); + omap2xxx_prm_clear_mod_irqs(CORE_MOD, OMAP24XX_PM_WKST2, ~0); + omap2xxx_prm_clear_mod_irqs(WKUP_MOD, PM_WKST, ~0); /* Try to enter MPU retention */ pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_RET); diff --git a/arch/arm/mach-omap2/prm2xxx.c b/arch/arm/mach-omap2/prm2xxx.c index a3a3cca2bcc4..86958050547a 100644 --- a/arch/arm/mach-omap2/prm2xxx.c +++ b/arch/arm/mach-omap2/prm2xxx.c @@ -114,6 +114,24 @@ void omap2xxx_prm_dpll_reset(void) omap2_prm_read_mod_reg(WKUP_MOD, OMAP2_RM_RSTCTRL); } +/** + * omap2xxx_prm_clear_mod_irqs - clear wakeup status bits for a module + * @module: PRM module to clear wakeups from + * @regs: register offset to clear + * @wkst_mask: wakeup status mask to clear + * + * Clears wakeup status bits for a given module, so that the device can + * re-enter idle. + */ +void omap2xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask) +{ + u32 wkst; + + wkst = omap2_prm_read_mod_reg(module, regs); + wkst &= wkst_mask; + omap2_prm_write_mod_reg(wkst, module, regs); +} + int omap2xxx_clkdm_sleep(struct clockdomain *clkdm) { omap2_prm_set_mod_reg_bits(OMAP24XX_FORCESTATE_MASK, diff --git a/arch/arm/mach-omap2/prm2xxx.h b/arch/arm/mach-omap2/prm2xxx.h index d2cb6365716f..d73414139292 100644 --- a/arch/arm/mach-omap2/prm2xxx.h +++ b/arch/arm/mach-omap2/prm2xxx.h @@ -125,6 +125,7 @@ extern int omap2xxx_clkdm_sleep(struct clockdomain *clkdm); extern int omap2xxx_clkdm_wakeup(struct clockdomain *clkdm); extern void omap2xxx_prm_dpll_reset(void); +void omap2xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask); extern int __init omap2xxx_prm_init(void); |