diff options
Diffstat (limited to 'arch/arm/mach-omap2/pm34xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/pm34xx.c | 971 |
1 files changed, 482 insertions, 489 deletions
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index 0ff5a6c53aa..507d8eeaab9 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -5,6 +5,9 @@ * Tony Lindgren <tony@atomide.com> * Jouni Hogander * + * Copyright (C) 2007 Texas Instruments, Inc. + * Rajendra Nayak <rnayak@ti.com> + * * Copyright (C) 2005 Texas Instruments, Inc. * Richard Woodruff <r-woodruff2@ti.com> * @@ -22,19 +25,35 @@ #include <linux/list.h> #include <linux/err.h> #include <linux/gpio.h> - -#include <mach/sram.h> -#include <mach/clockdomain.h> -#include <mach/powerdomain.h> -#include <mach/control.h> -#include <mach/serial.h> - -#include "cm.h" +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include <linux/omap-dma.h> +#include <linux/platform_data/gpio-omap.h> + +#include <trace/events/power.h> + +#include <asm/fncpy.h> +#include <asm/suspend.h> +#include <asm/system_misc.h> + +#include "clockdomain.h" +#include "powerdomain.h" +#include "soc.h" +#include "common.h" +#include "cm3xxx.h" #include "cm-regbits-34xx.h" +#include "gpmc.h" #include "prm-regbits-34xx.h" - -#include "prm.h" +#include "prm3xxx.h" #include "pm.h" +#include "sdrc.h" +#include "sram.h" +#include "control.h" +#include "vc.h" + +/* pm34xx errata defined in pm.h */ +u16 pm34xx_errata; struct power_state { struct powerdomain *pwrdm; @@ -47,106 +66,174 @@ struct power_state { static LIST_HEAD(pwrst_list); -static void (*_omap_sram_idle)(u32 *addr, int save_state); +static int (*_omap_save_secure_sram)(u32 *addr); +void (*omap3_do_wfi_sram)(void); -static struct powerdomain *mpu_pwrdm; +static struct powerdomain *mpu_pwrdm, *neon_pwrdm; +static struct powerdomain *core_pwrdm, *per_pwrdm; -/* PRCM Interrupt Handler for wakeups */ -static irqreturn_t prcm_interrupt_handler (int irq, void *dev_id) +static void omap3_core_save_context(void) { - u32 wkst, irqstatus_mpu; - u32 fclk, iclk; + omap3_ctrl_save_padconf(); - /* WKUP */ - wkst = prm_read_mod_reg(WKUP_MOD, PM_WKST); - if (wkst) { - iclk = cm_read_mod_reg(WKUP_MOD, CM_ICLKEN); - fclk = cm_read_mod_reg(WKUP_MOD, CM_FCLKEN); - cm_set_mod_reg_bits(wkst, WKUP_MOD, CM_ICLKEN); - cm_set_mod_reg_bits(wkst, WKUP_MOD, CM_FCLKEN); - prm_write_mod_reg(wkst, WKUP_MOD, PM_WKST); - while (prm_read_mod_reg(WKUP_MOD, PM_WKST)) - cpu_relax(); - cm_write_mod_reg(iclk, WKUP_MOD, CM_ICLKEN); - cm_write_mod_reg(fclk, WKUP_MOD, CM_FCLKEN); - } + /* + * Force write last pad into memory, as this can fail in some + * cases according to errata 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 */ + omap3_gpmc_save_context(); + /* Save the system control module context, padconf already save above*/ + omap3_control_save_context(); + omap_dma_global_context_save(); +} - /* CORE */ - wkst = prm_read_mod_reg(CORE_MOD, PM_WKST1); - if (wkst) { - iclk = cm_read_mod_reg(CORE_MOD, CM_ICLKEN1); - fclk = cm_read_mod_reg(CORE_MOD, CM_FCLKEN1); - cm_set_mod_reg_bits(wkst, CORE_MOD, CM_ICLKEN1); - cm_set_mod_reg_bits(wkst, CORE_MOD, CM_FCLKEN1); - prm_write_mod_reg(wkst, CORE_MOD, PM_WKST1); - while (prm_read_mod_reg(CORE_MOD, PM_WKST1)) - cpu_relax(); - cm_write_mod_reg(iclk, CORE_MOD, CM_ICLKEN1); - cm_write_mod_reg(fclk, CORE_MOD, CM_FCLKEN1); - } - wkst = prm_read_mod_reg(CORE_MOD, OMAP3430ES2_PM_WKST3); - if (wkst) { - iclk = cm_read_mod_reg(CORE_MOD, CM_ICLKEN3); - fclk = cm_read_mod_reg(CORE_MOD, OMAP3430ES2_CM_FCLKEN3); - cm_set_mod_reg_bits(wkst, CORE_MOD, CM_ICLKEN3); - cm_set_mod_reg_bits(wkst, CORE_MOD, OMAP3430ES2_CM_FCLKEN3); - prm_write_mod_reg(wkst, CORE_MOD, OMAP3430ES2_PM_WKST3); - while (prm_read_mod_reg(CORE_MOD, OMAP3430ES2_PM_WKST3)) - cpu_relax(); - cm_write_mod_reg(iclk, CORE_MOD, CM_ICLKEN3); - cm_write_mod_reg(fclk, CORE_MOD, OMAP3430ES2_CM_FCLKEN3); +static void omap3_core_restore_context(void) +{ + /* Restore the control module context, padconf restored by h/w */ + omap3_control_restore_context(); + /* Restore the GPMC context */ + omap3_gpmc_restore_context(); + /* Restore the interrupt controller context */ + omap_intc_restore_context(); + omap_dma_global_context_restore(); +} + +/* + * FIXME: This function should be called before entering off-mode after + * OMAP3 secure services have been accessed. Currently it is only called + * once during boot sequence, but this works as we are not using secure + * services. + */ +static void omap3_save_secure_ram_context(void) +{ + u32 ret; + int mpu_next_state = pwrdm_read_next_pwrst(mpu_pwrdm); + + if (omap_type() != OMAP2_DEVICE_TYPE_GP) { + /* + * MPU next state must be set to POWER_ON temporarily, + * otherwise the WFI executed inside the ROM code + * will hang the system. + */ + pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON); + ret = _omap_save_secure_sram((u32 *)(unsigned long) + __pa(omap3_secure_ram_storage)); + pwrdm_set_next_pwrst(mpu_pwrdm, mpu_next_state); + /* Following is for error tracking, it should not happen */ + if (ret) { + pr_err("save_secure_sram() returns %08x\n", ret); + while (1) + ; + } } +} - /* PER */ - wkst = prm_read_mod_reg(OMAP3430_PER_MOD, PM_WKST); +/* + * PRCM Interrupt Handler Helper Function + * + * The purpose of this function is to clear any wake-up events latched + * in the PRCM PM_WKST_x registers. It is possible that a wake-up event + * may occur whilst attempting to clear a PM_WKST_x register and thus + * set another bit in this register. A while loop is used to ensure + * that any peripheral wake-up events occurring while attempting to + * clear the PM_WKST_x are detected and cleared. + */ +static int prcm_clear_mod_irqs(s16 module, u8 regs, u32 ignore_bits) +{ + u32 wkst, fclk, iclk, clken; + u16 wkst_off = (regs == 3) ? OMAP3430ES2_PM_WKST3 : PM_WKST1; + u16 fclk_off = (regs == 3) ? OMAP3430ES2_CM_FCLKEN3 : CM_FCLKEN1; + u16 iclk_off = (regs == 3) ? CM_ICLKEN3 : CM_ICLKEN1; + u16 grpsel_off = (regs == 3) ? + OMAP3430ES2_PM_MPUGRPSEL3 : OMAP3430_PM_MPUGRPSEL; + int c = 0; + + wkst = omap2_prm_read_mod_reg(module, wkst_off); + wkst &= omap2_prm_read_mod_reg(module, grpsel_off); + wkst &= ~ignore_bits; if (wkst) { - iclk = cm_read_mod_reg(OMAP3430_PER_MOD, CM_ICLKEN); - fclk = cm_read_mod_reg(OMAP3430_PER_MOD, CM_FCLKEN); - cm_set_mod_reg_bits(wkst, OMAP3430_PER_MOD, CM_ICLKEN); - cm_set_mod_reg_bits(wkst, OMAP3430_PER_MOD, CM_FCLKEN); - prm_write_mod_reg(wkst, OMAP3430_PER_MOD, PM_WKST); - while (prm_read_mod_reg(OMAP3430_PER_MOD, PM_WKST)) - cpu_relax(); - cm_write_mod_reg(iclk, OMAP3430_PER_MOD, CM_ICLKEN); - cm_write_mod_reg(fclk, OMAP3430_PER_MOD, CM_FCLKEN); + iclk = omap2_cm_read_mod_reg(module, iclk_off); + fclk = omap2_cm_read_mod_reg(module, fclk_off); + while (wkst) { + clken = wkst; + omap2_cm_set_mod_reg_bits(clken, module, iclk_off); + /* + * For USBHOST, we don't know whether HOST1 or + * HOST2 woke us up, so enable both f-clocks + */ + if (module == OMAP3430ES2_USBHOST_MOD) + clken |= 1 << OMAP3430ES2_EN_USBHOST2_SHIFT; + omap2_cm_set_mod_reg_bits(clken, module, fclk_off); + omap2_prm_write_mod_reg(wkst, module, wkst_off); + wkst = omap2_prm_read_mod_reg(module, wkst_off); + wkst &= ~ignore_bits; + c++; + } + omap2_cm_write_mod_reg(iclk, module, iclk_off); + omap2_cm_write_mod_reg(fclk, module, fclk_off); } + return c; +} + +static irqreturn_t _prcm_int_handle_io(int irq, void *unused) +{ + int c; + + c = prcm_clear_mod_irqs(WKUP_MOD, 1, + ~(OMAP3430_ST_IO_MASK | OMAP3430_ST_IO_CHAIN_MASK)); + + return c ? IRQ_HANDLED : IRQ_NONE; +} + +static irqreturn_t _prcm_int_handle_wakeup(int irq, void *unused) +{ + int c; + + /* + * Clear all except ST_IO and ST_IO_CHAIN for wkup module, + * these are handled in a separate handler to avoid acking + * IO events before parsing in mux code + */ + c = prcm_clear_mod_irqs(WKUP_MOD, 1, + OMAP3430_ST_IO_MASK | OMAP3430_ST_IO_CHAIN_MASK); + c += prcm_clear_mod_irqs(CORE_MOD, 1, 0); + c += prcm_clear_mod_irqs(OMAP3430_PER_MOD, 1, 0); if (omap_rev() > OMAP3430_REV_ES1_0) { - /* USBHOST */ - wkst = prm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, PM_WKST); - if (wkst) { - iclk = cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, - CM_ICLKEN); - fclk = cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, - CM_FCLKEN); - cm_set_mod_reg_bits(wkst, OMAP3430ES2_USBHOST_MOD, - CM_ICLKEN); - cm_set_mod_reg_bits(wkst, OMAP3430ES2_USBHOST_MOD, - CM_FCLKEN); - prm_write_mod_reg(wkst, OMAP3430ES2_USBHOST_MOD, - PM_WKST); - while (prm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, - PM_WKST)) - cpu_relax(); - cm_write_mod_reg(iclk, OMAP3430ES2_USBHOST_MOD, - CM_ICLKEN); - cm_write_mod_reg(fclk, OMAP3430ES2_USBHOST_MOD, - CM_FCLKEN); - } + c += prcm_clear_mod_irqs(CORE_MOD, 3, 0); + c += prcm_clear_mod_irqs(OMAP3430ES2_USBHOST_MOD, 1, 0); } - irqstatus_mpu = prm_read_mod_reg(OCP_MOD, - OMAP3_PRM_IRQSTATUS_MPU_OFFSET); - prm_write_mod_reg(irqstatus_mpu, OCP_MOD, - OMAP3_PRM_IRQSTATUS_MPU_OFFSET); + return c ? IRQ_HANDLED : IRQ_NONE; +} - while (prm_read_mod_reg(OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET)) - cpu_relax(); +static void omap34xx_save_context(u32 *save) +{ + u32 val; + + /* Read Auxiliary Control Register */ + asm("mrc p15, 0, %0, c1, c0, 1" : "=r" (val)); + *save++ = 1; + *save++ = val; - return IRQ_HANDLED; + /* Read L2 AUX ctrl register */ + asm("mrc p15, 1, %0, c9, c0, 2" : "=r" (val)); + *save++ = 1; + *save++ = val; +} + +static int omap34xx_do_sram_idle(unsigned long save_state) +{ + omap34xx_cpu_suspend(save_state); + return 0; } -static void omap_sram_idle(void) +void omap_sram_idle(void) { /* Variable to tell what needs to be saved and restored * in omap_sram_idle*/ @@ -154,162 +241,122 @@ static void omap_sram_idle(void) /* save_state = 1 => Only L1 and logic lost */ /* save_state = 2 => Only L2 lost */ /* save_state = 3 => L1, L2 and logic lost */ - int save_state = 0, mpu_next_state; - - if (!_omap_sram_idle) - return; + int save_state = 0; + int mpu_next_state = PWRDM_POWER_ON; + int per_next_state = PWRDM_POWER_ON; + int core_next_state = PWRDM_POWER_ON; + int per_going_off; + int core_prev_state; + u32 sdrc_pwr = 0; mpu_next_state = pwrdm_read_next_pwrst(mpu_pwrdm); switch (mpu_next_state) { + case PWRDM_POWER_ON: case PWRDM_POWER_RET: /* No need to save context */ save_state = 0; break; + case PWRDM_POWER_OFF: + save_state = 3; + break; default: /* Invalid state */ - printk(KERN_ERR "Invalid mpu state in sram_idle\n"); + pr_err("Invalid mpu state in sram_idle\n"); return; } - pwrdm_pre_transition(); - - omap2_gpio_prepare_for_retention(); - omap_uart_prepare_idle(0); - omap_uart_prepare_idle(1); - omap_uart_prepare_idle(2); - - _omap_sram_idle(NULL, save_state); - cpu_init(); - omap_uart_resume_idle(2); - omap_uart_resume_idle(1); - omap_uart_resume_idle(0); - omap2_gpio_resume_after_retention(); + /* NEON control */ + if (pwrdm_read_pwrst(neon_pwrdm) == PWRDM_POWER_ON) + pwrdm_set_next_pwrst(neon_pwrdm, mpu_next_state); - pwrdm_post_transition(); + /* 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); -} - -/* - * Check if functional clocks are enabled before entering - * sleep. This function could be behind CONFIG_PM_DEBUG - * when all drivers are configuring their sysconfig registers - * properly and using their clocks properly. - */ -static int omap3_fclks_active(void) -{ - u32 fck_core1 = 0, fck_core3 = 0, fck_sgx = 0, fck_dss = 0, - fck_cam = 0, fck_per = 0, fck_usbhost = 0; + pwrdm_pre_transition(NULL); - fck_core1 = cm_read_mod_reg(CORE_MOD, - CM_FCLKEN1); - if (omap_rev() > OMAP3430_REV_ES1_0) { - fck_core3 = cm_read_mod_reg(CORE_MOD, - OMAP3430ES2_CM_FCLKEN3); - fck_sgx = cm_read_mod_reg(OMAP3430ES2_SGX_MOD, - CM_FCLKEN); - fck_usbhost = cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, - CM_FCLKEN); - } else - fck_sgx = cm_read_mod_reg(GFX_MOD, - OMAP3430ES2_CM_FCLKEN3); - fck_dss = cm_read_mod_reg(OMAP3430_DSS_MOD, - CM_FCLKEN); - fck_cam = cm_read_mod_reg(OMAP3430_CAM_MOD, - CM_FCLKEN); - fck_per = cm_read_mod_reg(OMAP3430_PER_MOD, - CM_FCLKEN); - - /* Ignore UART clocks. These are handled by UART core (serial.c) */ - fck_core1 &= ~(OMAP3430_EN_UART1 | OMAP3430_EN_UART2); - fck_per &= ~OMAP3430_EN_UART3; - - if (fck_core1 | fck_core3 | fck_sgx | fck_dss | - fck_cam | fck_per | fck_usbhost) - return 1; - return 0; -} + /* PER */ + if (per_next_state < PWRDM_POWER_ON) { + per_going_off = (per_next_state == PWRDM_POWER_OFF) ? 1 : 0; + omap2_gpio_prepare_for_idle(per_going_off); + } -static int omap3_can_sleep(void) -{ - if (!omap_uart_can_sleep()) - return 0; - if (omap3_fclks_active()) - return 0; - return 1; -} + /* CORE */ + if (core_next_state < PWRDM_POWER_ON) { + if (core_next_state == PWRDM_POWER_OFF) { + omap3_core_save_context(); + omap3_cm_save_context(); + } + } -/* This sets pwrdm state (other than mpu & core. Currently only ON & - * RET are supported. Function is assuming that clkdm doesn't have - * hw_sup mode enabled. */ -static int set_pwrdm_state(struct powerdomain *pwrdm, u32 state) -{ - u32 cur_state; - int sleep_switch = 0; - int ret = 0; + /* Configure PMIC signaling for I2C4 or sys_off_mode */ + omap3_vc_set_pmic_signaling(core_next_state); - if (pwrdm == NULL || IS_ERR(pwrdm)) - return -EINVAL; + omap3_intc_prepare_idle(); - while (!(pwrdm->pwrsts & (1 << state))) { - if (state == PWRDM_POWER_OFF) - return ret; - state--; - } + /* + * On EMU/HS devices ROM code restores a SRDC value + * from scratchpad which has automatic self refresh on timeout + * of AUTO_CNT = 1 enabled. This takes care of erratum ID i443. + * Hence store/restore the SDRC_POWER register here. + */ + if (cpu_is_omap3430() && omap_rev() >= OMAP3430_REV_ES3_0 && + (omap_type() == OMAP2_DEVICE_TYPE_EMU || + omap_type() == OMAP2_DEVICE_TYPE_SEC) && + core_next_state == PWRDM_POWER_OFF) + sdrc_pwr = sdrc_read_reg(SDRC_POWER); - cur_state = pwrdm_read_next_pwrst(pwrdm); - if (cur_state == state) - return ret; + /* + * omap3_arm_context is the location where some ARM context + * get saved. The rest is placed on the stack, and restored + * from there before resuming. + */ + if (save_state) + omap34xx_save_context(omap3_arm_context); + if (save_state == 1 || save_state == 3) + cpu_suspend(save_state, omap34xx_do_sram_idle); + else + omap34xx_do_sram_idle(save_state); - if (pwrdm_read_pwrst(pwrdm) < PWRDM_POWER_ON) { - omap2_clkdm_wakeup(pwrdm->pwrdm_clkdms[0]); - sleep_switch = 1; - pwrdm_wait_transition(pwrdm); - } + /* Restore normal SDRC POWER settings */ + if (cpu_is_omap3430() && omap_rev() >= OMAP3430_REV_ES3_0 && + (omap_type() == OMAP2_DEVICE_TYPE_EMU || + omap_type() == OMAP2_DEVICE_TYPE_SEC) && + core_next_state == PWRDM_POWER_OFF) + sdrc_write_reg(sdrc_pwr, SDRC_POWER); - ret = pwrdm_set_next_pwrst(pwrdm, state); - if (ret) { - printk(KERN_ERR "Unable to set state of powerdomain: %s\n", - pwrdm->name); - goto err; + /* CORE */ + if (core_next_state < PWRDM_POWER_ON) { + core_prev_state = pwrdm_read_prev_pwrst(core_pwrdm); + if (core_prev_state == PWRDM_POWER_OFF) { + omap3_core_restore_context(); + omap3_cm_restore_context(); + omap3_sram_restore_context(); + omap2_sms_restore_context(); + } } + omap3_intc_resume_idle(); - if (sleep_switch) { - omap2_clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]); - pwrdm_wait_transition(pwrdm); - pwrdm_state_switch(pwrdm); - } + pwrdm_post_transition(NULL); -err: - return ret; + /* PER */ + if (per_next_state < PWRDM_POWER_ON) + omap2_gpio_resume_after_idle(); } static void omap3_pm_idle(void) { - local_irq_disable(); - local_fiq_disable(); - - if (!omap3_can_sleep()) - goto out; - if (omap_irq_pending()) - goto out; + return; + + trace_cpu_idle(1, smp_processor_id()); omap_sram_idle(); -out: - local_fiq_enable(); - local_irq_enable(); + trace_cpu_idle(PWR_EVENT_EXIT, smp_processor_id()); } #ifdef CONFIG_SUSPEND -static suspend_state_t suspend_state; - -static int omap3_pm_prepare(void) -{ - disable_hlt(); - return 0; -} - static int omap3_pm_suspend(void) { struct power_state *pwrst; @@ -320,13 +367,14 @@ static int omap3_pm_suspend(void) pwrst->saved_state = pwrdm_read_next_pwrst(pwrst->pwrdm); /* Set ones wanted by suspend */ list_for_each_entry(pwrst, &pwrst_list, node) { - if (set_pwrdm_state(pwrst->pwrdm, pwrst->next_state)) + if (omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state)) goto restore; if (pwrdm_clear_all_prev_pwrst(pwrst->pwrdm)) goto restore; } - omap_uart_prepare_suspend(); + omap3_intc_suspend(); + omap_sram_idle(); restore: @@ -334,66 +382,21 @@ restore: list_for_each_entry(pwrst, &pwrst_list, node) { state = pwrdm_read_prev_pwrst(pwrst->pwrdm); if (state > pwrst->next_state) { - printk(KERN_INFO "Powerdomain (%s) didn't enter " - "target state %d\n", - pwrst->pwrdm->name, pwrst->next_state); + pr_info("Powerdomain (%s) didn't enter target state %d\n", + pwrst->pwrdm->name, pwrst->next_state); ret = -1; } - set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state); + omap_set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state); } if (ret) - printk(KERN_ERR "Could not enter target state in pm_suspend\n"); + pr_err("Could not enter target state in pm_suspend\n"); else - printk(KERN_INFO "Successfully put all powerdomains " - "to target state\n"); - - return ret; -} - -static int omap3_pm_enter(suspend_state_t unused) -{ - int ret = 0; - - switch (suspend_state) { - case PM_SUSPEND_STANDBY: - case PM_SUSPEND_MEM: - ret = omap3_pm_suspend(); - break; - default: - ret = -EINVAL; - } + pr_info("Successfully put all powerdomains to target state\n"); return ret; } - -static void omap3_pm_finish(void) -{ - enable_hlt(); -} - -/* Hooks to enable / disable UART interrupts during suspend */ -static int omap3_pm_begin(suspend_state_t state) -{ - suspend_state = state; - omap_uart_enable_irqs(0); - return 0; -} - -static void omap3_pm_end(void) -{ - suspend_state = PM_SUSPEND_ON; - omap_uart_enable_irqs(1); - return; -} - -static struct platform_suspend_ops omap_pm_ops = { - .begin = omap3_pm_begin, - .end = omap3_pm_end, - .prepare = omap3_pm_prepare, - .enter = omap3_pm_enter, - .finish = omap3_pm_finish, - .valid = suspend_valid_only_mem, -}; +#else +#define omap3_pm_suspend NULL #endif /* CONFIG_SUSPEND */ @@ -410,38 +413,37 @@ static struct platform_suspend_ops omap_pm_ops = { static void __init omap3_iva_idle(void) { /* ensure IVA2 clock is disabled */ - cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN); + omap2_cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN); /* if no clock activity, nothing else to do */ - if (!(cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKSTST) & + if (!(omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKSTST) & OMAP3430_CLKACTIVITY_IVA2_MASK)) return; /* Reset IVA2 */ - prm_write_mod_reg(OMAP3430_RST1_IVA2 | - OMAP3430_RST2_IVA2 | - OMAP3430_RST3_IVA2, - OMAP3430_IVA2_MOD, RM_RSTCTRL); + omap2_prm_write_mod_reg(OMAP3430_RST1_IVA2_MASK | + OMAP3430_RST2_IVA2_MASK | + OMAP3430_RST3_IVA2_MASK, + OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); /* Enable IVA2 clock */ - cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2, + omap2_cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_MASK, OMAP3430_IVA2_MOD, CM_FCLKEN); /* Set IVA2 boot mode to 'idle' */ - omap_ctrl_writel(OMAP3_IVA2_BOOTMOD_IDLE, - OMAP343X_CONTROL_IVA2_BOOTMOD); + omap3_ctrl_set_iva_bootmode_idle(); /* Un-reset IVA2 */ - prm_write_mod_reg(0, OMAP3430_IVA2_MOD, RM_RSTCTRL); + omap2_prm_write_mod_reg(0, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); /* Disable IVA2 clock */ - cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN); + omap2_cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN); /* Reset IVA2 */ - prm_write_mod_reg(OMAP3430_RST1_IVA2 | - OMAP3430_RST2_IVA2 | - OMAP3430_RST3_IVA2, - OMAP3430_IVA2_MOD, RM_RSTCTRL); + omap2_prm_write_mod_reg(OMAP3430_RST1_IVA2_MASK | + OMAP3430_RST2_IVA2_MASK | + OMAP3430_RST3_IVA2_MASK, + OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); } static void __init omap3_d2d_idle(void) @@ -462,208 +464,120 @@ static void __init omap3_d2d_idle(void) omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_IDLEACK); /* 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); + omap2_prm_write_mod_reg(OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RSTPWRON_MASK | + OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RST_MASK, + CORE_MOD, OMAP2_RM_RSTCTRL); + omap2_prm_write_mod_reg(0, CORE_MOD, OMAP2_RM_RSTCTRL); } static void __init prcm_setup_regs(void) { - /* XXX Reset all wkdeps. This should be done when initializing - * powerdomains */ - prm_write_mod_reg(0, OMAP3430_IVA2_MOD, PM_WKDEP); - prm_write_mod_reg(0, MPU_MOD, PM_WKDEP); - prm_write_mod_reg(0, OMAP3430_DSS_MOD, PM_WKDEP); - prm_write_mod_reg(0, OMAP3430_NEON_MOD, PM_WKDEP); - prm_write_mod_reg(0, OMAP3430_CAM_MOD, PM_WKDEP); - prm_write_mod_reg(0, OMAP3430_PER_MOD, PM_WKDEP); - if (omap_rev() > OMAP3430_REV_ES1_0) { - prm_write_mod_reg(0, OMAP3430ES2_SGX_MOD, PM_WKDEP); - prm_write_mod_reg(0, OMAP3430ES2_USBHOST_MOD, PM_WKDEP); - } else - prm_write_mod_reg(0, GFX_MOD, PM_WKDEP); - - /* - * Enable interface clock autoidle for all modules. - * Note that in the long run this should be done by clockfw - */ - cm_write_mod_reg( - OMAP3430_AUTO_MODEM | - OMAP3430ES2_AUTO_MMC3 | - OMAP3430ES2_AUTO_ICR | - OMAP3430_AUTO_AES2 | - OMAP3430_AUTO_SHA12 | - OMAP3430_AUTO_DES2 | - OMAP3430_AUTO_MMC2 | - OMAP3430_AUTO_MMC1 | - OMAP3430_AUTO_MSPRO | - OMAP3430_AUTO_HDQ | - OMAP3430_AUTO_MCSPI4 | - OMAP3430_AUTO_MCSPI3 | - OMAP3430_AUTO_MCSPI2 | - OMAP3430_AUTO_MCSPI1 | - OMAP3430_AUTO_I2C3 | - OMAP3430_AUTO_I2C2 | - OMAP3430_AUTO_I2C1 | - OMAP3430_AUTO_UART2 | - OMAP3430_AUTO_UART1 | - OMAP3430_AUTO_GPT11 | - OMAP3430_AUTO_GPT10 | - OMAP3430_AUTO_MCBSP5 | - OMAP3430_AUTO_MCBSP1 | - OMAP3430ES1_AUTO_FAC | /* This is es1 only */ - OMAP3430_AUTO_MAILBOXES | - OMAP3430_AUTO_OMAPCTRL | - OMAP3430ES1_AUTO_FSHOSTUSB | - OMAP3430_AUTO_HSOTGUSB | - OMAP3430_AUTO_SAD2D | - OMAP3430_AUTO_SSI, - CORE_MOD, CM_AUTOIDLE1); - - cm_write_mod_reg( - OMAP3430_AUTO_PKA | - OMAP3430_AUTO_AES1 | - OMAP3430_AUTO_RNG | - OMAP3430_AUTO_SHA11 | - OMAP3430_AUTO_DES1, - CORE_MOD, CM_AUTOIDLE2); - - if (omap_rev() > OMAP3430_REV_ES1_0) { - cm_write_mod_reg( - OMAP3430_AUTO_MAD2D | - OMAP3430ES2_AUTO_USBTLL, - CORE_MOD, CM_AUTOIDLE3); - } - - cm_write_mod_reg( - OMAP3430_AUTO_WDT2 | - OMAP3430_AUTO_WDT1 | - OMAP3430_AUTO_GPIO1 | - OMAP3430_AUTO_32KSYNC | - OMAP3430_AUTO_GPT12 | - OMAP3430_AUTO_GPT1 , - WKUP_MOD, CM_AUTOIDLE); - - cm_write_mod_reg( - OMAP3430_AUTO_DSS, - OMAP3430_DSS_MOD, - CM_AUTOIDLE); - - cm_write_mod_reg( - OMAP3430_AUTO_CAM, - OMAP3430_CAM_MOD, - CM_AUTOIDLE); - - cm_write_mod_reg( - OMAP3430_AUTO_GPIO6 | - OMAP3430_AUTO_GPIO5 | - OMAP3430_AUTO_GPIO4 | - OMAP3430_AUTO_GPIO3 | - OMAP3430_AUTO_GPIO2 | - OMAP3430_AUTO_WDT3 | - OMAP3430_AUTO_UART3 | - OMAP3430_AUTO_GPT9 | - OMAP3430_AUTO_GPT8 | - OMAP3430_AUTO_GPT7 | - OMAP3430_AUTO_GPT6 | - OMAP3430_AUTO_GPT5 | - OMAP3430_AUTO_GPT4 | - OMAP3430_AUTO_GPT3 | - OMAP3430_AUTO_GPT2 | - OMAP3430_AUTO_MCBSP4 | - OMAP3430_AUTO_MCBSP3 | - OMAP3430_AUTO_MCBSP2, - OMAP3430_PER_MOD, - CM_AUTOIDLE); + u32 omap3630_en_uart4_mask = cpu_is_omap3630() ? + OMAP3630_EN_UART4_MASK : 0; + u32 omap3630_grpsel_uart4_mask = cpu_is_omap3630() ? + OMAP3630_GRPSEL_UART4_MASK : 0; - if (omap_rev() > OMAP3430_REV_ES1_0) { - cm_write_mod_reg( - OMAP3430ES2_AUTO_USBHOST, - OMAP3430ES2_USBHOST_MOD, - CM_AUTOIDLE); - } - - /* - * Set all plls to autoidle. This is needed until autoidle is - * enabled by clockfw - */ - cm_write_mod_reg(1 << OMAP3430_AUTO_IVA2_DPLL_SHIFT, - OMAP3430_IVA2_MOD, CM_AUTOIDLE2); - cm_write_mod_reg(1 << OMAP3430_AUTO_MPU_DPLL_SHIFT, - MPU_MOD, - CM_AUTOIDLE2); - cm_write_mod_reg((1 << OMAP3430_AUTO_PERIPH_DPLL_SHIFT) | - (1 << OMAP3430_AUTO_CORE_DPLL_SHIFT), - PLL_MOD, - CM_AUTOIDLE); - cm_write_mod_reg(1 << OMAP3430ES2_AUTO_PERIPH2_DPLL_SHIFT, - PLL_MOD, - CM_AUTOIDLE2); + /* XXX This should be handled by hwmod code or SCM init code */ + omap_ctrl_writel(OMAP3430_AUTOIDLE_MASK, OMAP2_CONTROL_SYSCONFIG); /* * Enable control of expternal oscillator through * sys_clkreq. In the long run clock framework should * take care of this. */ - prm_rmw_mod_reg_bits(OMAP_AUTOEXTCLKMODE_MASK, + omap2_prm_rmw_mod_reg_bits(OMAP_AUTOEXTCLKMODE_MASK, 1 << OMAP_AUTOEXTCLKMODE_SHIFT, OMAP3430_GR_MOD, OMAP3_PRM_CLKSRC_CTRL_OFFSET); /* setup wakup source */ - prm_write_mod_reg(OMAP3430_EN_IO | OMAP3430_EN_GPIO1 | - OMAP3430_EN_GPT1 | OMAP3430_EN_GPT12, + omap2_prm_write_mod_reg(OMAP3430_EN_IO_MASK | OMAP3430_EN_GPIO1_MASK | + OMAP3430_EN_GPT1_MASK | OMAP3430_EN_GPT12_MASK, WKUP_MOD, PM_WKEN); /* No need to write EN_IO, that is always enabled */ - prm_write_mod_reg(OMAP3430_EN_GPIO1 | OMAP3430_EN_GPT1 | - OMAP3430_EN_GPT12, + omap2_prm_write_mod_reg(OMAP3430_GRPSEL_GPIO1_MASK | + OMAP3430_GRPSEL_GPT1_MASK | + OMAP3430_GRPSEL_GPT12_MASK, WKUP_MOD, OMAP3430_PM_MPUGRPSEL); - /* For some reason IO doesn't generate wakeup event even if - * it is selected to mpu wakeup goup */ - prm_write_mod_reg(OMAP3430_IO_EN | OMAP3430_WKUP_EN, - OCP_MOD, OMAP3_PRM_IRQENABLE_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); - - /* Clear any pending PRCM interrupts */ - prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET); + /* Enable PM_WKEN to support DSS LPR */ + omap2_prm_write_mod_reg(OMAP3430_PM_WKEN_DSS_EN_DSS_MASK, + OMAP3430_DSS_MOD, PM_WKEN); + + /* Enable wakeups in PER */ + omap2_prm_write_mod_reg(omap3630_en_uart4_mask | + OMAP3430_EN_GPIO2_MASK | OMAP3430_EN_GPIO3_MASK | + OMAP3430_EN_GPIO4_MASK | OMAP3430_EN_GPIO5_MASK | + OMAP3430_EN_GPIO6_MASK | OMAP3430_EN_UART3_MASK | + OMAP3430_EN_MCBSP2_MASK | OMAP3430_EN_MCBSP3_MASK | + OMAP3430_EN_MCBSP4_MASK, + OMAP3430_PER_MOD, PM_WKEN); + /* and allow them to wake up MPU */ + omap2_prm_write_mod_reg(omap3630_grpsel_uart4_mask | + OMAP3430_GRPSEL_GPIO2_MASK | + OMAP3430_GRPSEL_GPIO3_MASK | + OMAP3430_GRPSEL_GPIO4_MASK | + OMAP3430_GRPSEL_GPIO5_MASK | + OMAP3430_GRPSEL_GPIO6_MASK | + OMAP3430_GRPSEL_UART3_MASK | + OMAP3430_GRPSEL_MCBSP2_MASK | + OMAP3430_GRPSEL_MCBSP3_MASK | + OMAP3430_GRPSEL_MCBSP4_MASK, + OMAP3430_PER_MOD, OMAP3430_PM_MPUGRPSEL); /* 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); + if (omap3_has_iva()) { + omap2_prm_write_mod_reg(0, WKUP_MOD, OMAP3430_PM_IVAGRPSEL); + omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430_PM_IVAGRPSEL1); + omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430ES2_PM_IVAGRPSEL3); + omap2_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); + omap2_prm_write_mod_reg(0xffffffff, MPU_MOD, OMAP2_RM_RSTST); + omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP2_RM_RSTST); + omap2_prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, OMAP2_RM_RSTST); + omap2_prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, OMAP2_RM_RSTST); + omap2_prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, OMAP2_RM_RSTST); + omap2_prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, OMAP2_RM_RSTST); + omap2_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); + omap2_prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET); + /* + * We need to idle iva2_pwrdm even on am3703 with no iva2. + */ omap3_iva_idle(); + omap3_d2d_idle(); } +void omap3_pm_off_mode_enable(int enable) +{ + struct power_state *pwrst; + u32 state; + + if (enable) + state = PWRDM_POWER_OFF; + else + state = PWRDM_POWER_RET; + + list_for_each_entry(pwrst, &pwrst_list, node) { + if (IS_PM34XX_ERRATUM(PM_SDRC_WAKEUP_ERRATUM_i583) && + pwrst->pwrdm == core_pwrdm && + state == PWRDM_POWER_OFF) { + pwrst->next_state = PWRDM_POWER_RET; + pr_warn("%s: Core OFF disabled due to errata i583\n", + __func__); + } else { + pwrst->next_state = state; + } + omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state); + } +} + int omap3_pm_get_suspend_state(struct powerdomain *pwrdm) { struct power_state *pwrst; @@ -705,79 +619,158 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused) if (pwrdm_has_hdwr_sar(pwrdm)) pwrdm_enable_hdwr_sar(pwrdm); - return set_pwrdm_state(pwrst->pwrdm, pwrst->next_state); + return omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state); } /* - * Enable hw supervised mode for all clockdomains if it's - * supported. Initiate sleep transition for other clockdomains, if - * they are not used + * Push functions to SRAM + * + * The minimum set of functions is pushed to SRAM for execution: + * - omap3_do_wfi for erratum i581 WA, + * - save_secure_ram_context for security extensions. */ -static int __init clkdms_setup(struct clockdomain *clkdm, void *unused) +void omap_push_sram_idle(void) { - if (clkdm->flags & CLKDM_CAN_ENABLE_AUTO) - omap2_clkdm_allow_idle(clkdm); - else if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP && - atomic_read(&clkdm->usecount) == 0) - omap2_clkdm_sleep(clkdm); - return 0; + omap3_do_wfi_sram = omap_sram_push(omap3_do_wfi, omap3_do_wfi_sz); + + if (omap_type() != OMAP2_DEVICE_TYPE_GP) + _omap_save_secure_sram = omap_sram_push(save_secure_ram_context, + save_secure_ram_context_sz); +} + +static void __init pm_errata_configure(void) +{ + if (cpu_is_omap3630()) { + pm34xx_errata |= PM_RTA_ERRATUM_i608; + /* Enable the l2 cache toggling in sleep logic */ + enable_omap3630_toggle_l2_on_restore(); + if (omap_rev() < OMAP3630_REV_ES1_2) + pm34xx_errata |= (PM_SDRC_WAKEUP_ERRATUM_i583 | + PM_PER_MEMORIES_ERRATUM_i582); + } else if (cpu_is_omap34xx()) { + pm34xx_errata |= PM_PER_MEMORIES_ERRATUM_i582; + } } -static int __init omap3_pm_init(void) +int __init omap3_pm_init(void) { struct power_state *pwrst, *tmp; + struct clockdomain *neon_clkdm, *mpu_clkdm, *per_clkdm, *wkup_clkdm; int ret; - if (!cpu_is_omap34xx()) - return -ENODEV; + if (!omap3_has_io_chain_ctrl()) + pr_warning("PM: no software I/O chain control; some wakeups may be lost\n"); - printk(KERN_ERR "Power Management for TI OMAP3.\n"); + pm_errata_configure(); /* XXX prcm_setup_regs needs to be before enabling hw * supervised mode for powerdomains */ prcm_setup_regs(); - ret = request_irq(INT_34XX_PRCM_MPU_IRQ, - (irq_handler_t)prcm_interrupt_handler, - IRQF_DISABLED, "prcm", NULL); + ret = request_irq(omap_prcm_event_to_irq("wkup"), + _prcm_int_handle_wakeup, IRQF_NO_SUSPEND, "pm_wkup", NULL); + if (ret) { - printk(KERN_ERR "request_irq failed to register for 0x%x\n", - INT_34XX_PRCM_MPU_IRQ); + pr_err("pm: Failed to request pm_wkup irq\n"); goto err1; } - ret = pwrdm_for_each(pwrdms_setup, NULL); + /* IO interrupt is shared with mux code */ + ret = request_irq(omap_prcm_event_to_irq("io"), + _prcm_int_handle_io, IRQF_SHARED | IRQF_NO_SUSPEND, "pm_io", + omap3_pm_init); + enable_irq(omap_prcm_event_to_irq("io")); + if (ret) { - printk(KERN_ERR "Failed to setup powerdomains\n"); + pr_err("pm: Failed to request pm_io irq\n"); goto err2; } - (void) clkdm_for_each(clkdms_setup, NULL); + ret = pwrdm_for_each(pwrdms_setup, NULL); + if (ret) { + pr_err("Failed to setup powerdomains\n"); + goto err3; + } + + (void) clkdm_for_each(omap_pm_clkdms_setup, NULL); mpu_pwrdm = pwrdm_lookup("mpu_pwrdm"); if (mpu_pwrdm == NULL) { - printk(KERN_ERR "Failed to get mpu_pwrdm\n"); - goto err2; + pr_err("Failed to get mpu_pwrdm\n"); + ret = -EINVAL; + goto err3; } - _omap_sram_idle = omap_sram_push(omap34xx_cpu_suspend, - omap34xx_cpu_suspend_sz); + neon_pwrdm = pwrdm_lookup("neon_pwrdm"); + per_pwrdm = pwrdm_lookup("per_pwrdm"); + core_pwrdm = pwrdm_lookup("core_pwrdm"); -#ifdef CONFIG_SUSPEND - suspend_set_ops(&omap_pm_ops); -#endif /* CONFIG_SUSPEND */ + neon_clkdm = clkdm_lookup("neon_clkdm"); + mpu_clkdm = clkdm_lookup("mpu_clkdm"); + per_clkdm = clkdm_lookup("per_clkdm"); + wkup_clkdm = clkdm_lookup("wkup_clkdm"); - pm_idle = omap3_pm_idle; + omap_common_suspend_init(omap3_pm_suspend); -err1: + arm_pm_idle = omap3_pm_idle; + omap3_idle_init(); + + /* + * RTA is disabled during initialization as per erratum i608 + * it is safer to disable RTA by the bootloader, but we would like + * to be doubly sure here and prevent any mishaps. + */ + if (IS_PM34XX_ERRATUM(PM_RTA_ERRATUM_i608)) + omap3630_ctrl_disable_rta(); + + /* + * The UART3/4 FIFO and the sidetone memory in McBSP2/3 are + * not correctly reset when the PER powerdomain comes back + * from OFF or OSWR when the CORE powerdomain is kept active. + * See OMAP36xx Erratum i582 "PER Domain reset issue after + * Domain-OFF/OSWR Wakeup". This wakeup dependency is not a + * complete workaround. The kernel must also prevent the PER + * powerdomain from going to OSWR/OFF while the CORE + * powerdomain is not going to OSWR/OFF. And if PER last + * power state was off while CORE last power state was ON, the + * UART3/4 and McBSP2/3 SIDETONE devices need to run a + * self-test using their loopback tests; if that fails, those + * devices are unusable until the PER/CORE can complete a transition + * from ON to OSWR/OFF and then back to ON. + * + * XXX Technically this workaround is only needed if off-mode + * or OSWR is enabled. + */ + if (IS_PM34XX_ERRATUM(PM_PER_MEMORIES_ERRATUM_i582)) + clkdm_add_wkdep(per_clkdm, wkup_clkdm); + + clkdm_add_wkdep(neon_clkdm, mpu_clkdm); + if (omap_type() != OMAP2_DEVICE_TYPE_GP) { + omap3_secure_ram_storage = + kmalloc(0x803F, GFP_KERNEL); + if (!omap3_secure_ram_storage) + pr_err("Memory allocation failed when allocating for secure sram context\n"); + + local_irq_disable(); + + omap_dma_global_context_save(); + omap3_save_secure_ram_context(); + omap_dma_global_context_restore(); + + local_irq_enable(); + } + + omap3_save_scratchpad_contents(); return ret; -err2: - free_irq(INT_34XX_PRCM_MPU_IRQ, NULL); + +err3: list_for_each_entry_safe(pwrst, tmp, &pwrst_list, node) { list_del(&pwrst->node); kfree(pwrst); } + free_irq(omap_prcm_event_to_irq("io"), omap3_pm_init); +err2: + free_irq(omap_prcm_event_to_irq("wkup"), NULL); +err1: return ret; } - -late_initcall(omap3_pm_init); |