diff options
Diffstat (limited to 'arch/arm/mach-omap2/pm34xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/pm34xx.c | 94 |
1 files changed, 56 insertions, 38 deletions
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index 81ed252a0f8..fee2efb172e 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -26,6 +26,7 @@ #include <linux/err.h> #include <linux/gpio.h> #include <linux/clk.h> +#include <linux/delay.h> #include <plat/sram.h> #include <plat/clockdomain.h> @@ -124,9 +125,17 @@ static void omap3_core_save_context(void) control_padconf_off |= START_PADCONF_SAVE; omap_ctrl_writel(control_padconf_off, OMAP343X_CONTROL_PADCONF_OFF); /* wait for the save to complete */ - while (!omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS) - & PADCONF_SAVE_DONE) - ; + while (!(omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS) + & PADCONF_SAVE_DONE)) + udelay(1); + + /* + * Force write last pad into memory, as this can fail in some + * cases according to erratas 1.157, 1.185 + */ + omap_ctrl_writel(omap_ctrl_readl(OMAP343X_PADCONF_ETK_D14), + OMAP343X_CONTROL_MEM_WKUP + 0x2a0); + /* Save the Interrupt controller context */ omap_intc_save_context(); /* Save the GPMC context */ @@ -392,6 +401,7 @@ void omap_sram_idle(void) prm_set_mod_reg_bits(OMAP3430_EN_IO, WKUP_MOD, PM_WKEN); omap3_enable_io_chain(); } + omap3_intc_prepare_idle(); /* * On EMU/HS devices ROM code restores a SRDC value @@ -438,6 +448,7 @@ void omap_sram_idle(void) OMAP3430_GR_MOD, OMAP3_PRM_VOLTCTRL_OFFSET); } + omap3_intc_resume_idle(); /* PER */ if (per_next_state < PWRDM_POWER_ON) { @@ -578,6 +589,8 @@ static int omap3_pm_suspend(void) } omap_uart_prepare_suspend(); + omap3_intc_suspend(); + omap_sram_idle(); restore: @@ -672,10 +685,10 @@ static void __init omap3_iva_idle(void) prm_write_mod_reg(OMAP3430_RST1_IVA2 | OMAP3430_RST2_IVA2 | OMAP3430_RST3_IVA2, - OMAP3430_IVA2_MOD, RM_RSTCTRL); + OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); /* Enable IVA2 clock */ - cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2, + cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_MASK, OMAP3430_IVA2_MOD, CM_FCLKEN); /* Set IVA2 boot mode to 'idle' */ @@ -683,7 +696,7 @@ static void __init omap3_iva_idle(void) OMAP343X_CONTROL_IVA2_BOOTMOD); /* Un-reset IVA2 */ - prm_write_mod_reg(0, OMAP3430_IVA2_MOD, RM_RSTCTRL); + prm_write_mod_reg(0, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); /* Disable IVA2 clock */ cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN); @@ -692,7 +705,7 @@ static void __init omap3_iva_idle(void) prm_write_mod_reg(OMAP3430_RST1_IVA2 | OMAP3430_RST2_IVA2 | OMAP3430_RST3_IVA2, - OMAP3430_IVA2_MOD, RM_RSTCTRL); + OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); } static void __init omap3_d2d_idle(void) @@ -715,8 +728,8 @@ static void __init omap3_d2d_idle(void) /* reset modem */ prm_write_mod_reg(OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RSTPWRON | OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RST, - CORE_MOD, RM_RSTCTRL); - prm_write_mod_reg(0, CORE_MOD, RM_RSTCTRL); + CORE_MOD, OMAP2_RM_RSTCTRL); + prm_write_mod_reg(0, CORE_MOD, OMAP2_RM_RSTCTRL); } static void __init prcm_setup_regs(void) @@ -835,6 +848,8 @@ static void __init prcm_setup_regs(void) CM_AUTOIDLE); } + omap_ctrl_writel(OMAP3430_AUTOIDLE, OMAP2_CONTROL_SYSCONFIG); + /* * Set all plls to autoidle. This is needed until autoidle is * enabled by clockfw @@ -875,15 +890,23 @@ static void __init prcm_setup_regs(void) prm_write_mod_reg(OMAP3430_IO_EN | OMAP3430_WKUP_EN, OCP_MOD, OMAP3_PRM_IRQENABLE_MPU_OFFSET); + /* Enable PM_WKEN to support DSS LPR */ + prm_write_mod_reg(OMAP3430_PM_WKEN_DSS_EN_DSS, + OMAP3430_DSS_MOD, PM_WKEN); + /* Enable wakeups in PER */ prm_write_mod_reg(OMAP3430_EN_GPIO2 | OMAP3430_EN_GPIO3 | OMAP3430_EN_GPIO4 | OMAP3430_EN_GPIO5 | - OMAP3430_EN_GPIO6 | OMAP3430_EN_UART3, + OMAP3430_EN_GPIO6 | OMAP3430_EN_UART3 | + OMAP3430_EN_MCBSP2 | OMAP3430_EN_MCBSP3 | + OMAP3430_EN_MCBSP4, OMAP3430_PER_MOD, PM_WKEN); /* and allow them to wake up MPU */ prm_write_mod_reg(OMAP3430_GRPSEL_GPIO2 | OMAP3430_EN_GPIO3 | OMAP3430_GRPSEL_GPIO4 | OMAP3430_EN_GPIO5 | - OMAP3430_GRPSEL_GPIO6 | OMAP3430_EN_UART3, + OMAP3430_GRPSEL_GPIO6 | OMAP3430_EN_UART3 | + OMAP3430_EN_MCBSP2 | OMAP3430_EN_MCBSP3 | + OMAP3430_EN_MCBSP4, OMAP3430_PER_MOD, OMAP3430_PM_MPUGRPSEL); /* Don't attach IVA interrupts */ @@ -893,31 +916,13 @@ static void __init prcm_setup_regs(void) prm_write_mod_reg(0, OMAP3430_PER_MOD, OMAP3430_PM_IVAGRPSEL); /* Clear any pending 'reset' flags */ - prm_write_mod_reg(0xffffffff, MPU_MOD, RM_RSTST); - prm_write_mod_reg(0xffffffff, CORE_MOD, RM_RSTST); - prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, RM_RSTST); - prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, RM_RSTST); - prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, RM_RSTST); - prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, RM_RSTST); - prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD, RM_RSTST); - - /* Clear any pending PRCM interrupts */ - prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET); - - /* Don't attach IVA interrupts */ - prm_write_mod_reg(0, WKUP_MOD, OMAP3430_PM_IVAGRPSEL); - prm_write_mod_reg(0, CORE_MOD, OMAP3430_PM_IVAGRPSEL1); - prm_write_mod_reg(0, CORE_MOD, OMAP3430ES2_PM_IVAGRPSEL3); - prm_write_mod_reg(0, OMAP3430_PER_MOD, OMAP3430_PM_IVAGRPSEL); - - /* Clear any pending 'reset' flags */ - prm_write_mod_reg(0xffffffff, MPU_MOD, RM_RSTST); - prm_write_mod_reg(0xffffffff, CORE_MOD, RM_RSTST); - prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, RM_RSTST); - prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, RM_RSTST); - prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, RM_RSTST); - prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, RM_RSTST); - prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD, RM_RSTST); + prm_write_mod_reg(0xffffffff, MPU_MOD, OMAP2_RM_RSTST); + prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP2_RM_RSTST); + prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, OMAP2_RM_RSTST); + prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, OMAP2_RM_RSTST); + prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, OMAP2_RM_RSTST); + prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, OMAP2_RM_RSTST); + prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD, OMAP2_RM_RSTST); /* Clear any pending PRCM interrupts */ prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET); @@ -936,6 +941,10 @@ void omap3_pm_off_mode_enable(int enable) else state = PWRDM_POWER_RET; +#ifdef CONFIG_CPU_IDLE + omap3_cpuidle_update_states(); +#endif + list_for_each_entry(pwrst, &pwrst_list, node) { pwrst->next_state = state; set_pwrdm_state(pwrst->pwrdm, state); @@ -993,6 +1002,9 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused) */ static int __init clkdms_setup(struct clockdomain *clkdm, void *unused) { + clkdm_clear_all_wkdeps(clkdm); + clkdm_clear_all_sleepdeps(clkdm); + if (clkdm->flags & CLKDM_CAN_ENABLE_AUTO) omap2_clkdm_allow_idle(clkdm); else if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP && @@ -1013,6 +1025,7 @@ void omap_push_sram_idle(void) static int __init omap3_pm_init(void) { struct power_state *pwrst, *tmp; + struct clockdomain *neon_clkdm, *per_clkdm, *mpu_clkdm, *core_clkdm; int ret; if (!cpu_is_omap34xx()) @@ -1052,6 +1065,11 @@ static int __init omap3_pm_init(void) core_pwrdm = pwrdm_lookup("core_pwrdm"); cam_pwrdm = pwrdm_lookup("cam_pwrdm"); + neon_clkdm = clkdm_lookup("neon_clkdm"); + mpu_clkdm = clkdm_lookup("mpu_clkdm"); + per_clkdm = clkdm_lookup("per_clkdm"); + core_clkdm = clkdm_lookup("core_clkdm"); + omap_push_sram_idle(); #ifdef CONFIG_SUSPEND suspend_set_ops(&omap_pm_ops); @@ -1060,14 +1078,14 @@ static int __init omap3_pm_init(void) pm_idle = omap3_pm_idle; omap3_idle_init(); - pwrdm_add_wkdep(neon_pwrdm, mpu_pwrdm); + clkdm_add_wkdep(neon_clkdm, mpu_clkdm); /* * REVISIT: This wkdep is only necessary when GPIO2-6 are enabled for * IO-pad wakeup. Otherwise it will unnecessarily waste power * waking up PER with every CORE wakeup - see * http://marc.info/?l=linux-omap&m=121852150710062&w=2 */ - pwrdm_add_wkdep(per_pwrdm, core_pwrdm); + clkdm_add_wkdep(per_clkdm, core_clkdm); if (omap_type() != OMAP2_DEVICE_TYPE_GP) { omap3_secure_ram_storage = |