diff options
Diffstat (limited to 'arch/arm/mach-omap2/pm24xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/pm24xx.c | 243 |
1 files changed, 135 insertions, 108 deletions
diff --git a/arch/arm/mach-omap2/pm24xx.c b/arch/arm/mach-omap2/pm24xx.c index a40457d8192..97feb3ab6a6 100644 --- a/arch/arm/mach-omap2/pm24xx.c +++ b/arch/arm/mach-omap2/pm24xx.c @@ -30,6 +30,7 @@ #include <linux/irq.h> #include <linux/time.h> #include <linux/gpio.h> +#include <linux/console.h> #include <asm/mach/time.h> #include <asm/mach/irq.h> @@ -41,16 +42,29 @@ #include <plat/dma.h> #include <plat/board.h> -#include "prm.h" +#include "prm2xxx_3xxx.h" #include "prm-regbits-24xx.h" -#include "cm.h" +#include "cm2xxx_3xxx.h" #include "cm-regbits-24xx.h" #include "sdrc.h" #include "pm.h" #include "control.h" -#include <plat/powerdomain.h> -#include <plat/clockdomain.h> +#include "powerdomain.h" +#include "clockdomain.h" + +#ifdef CONFIG_SUSPEND +static suspend_state_t suspend_state = PM_SUSPEND_ON; +static inline bool is_suspending(void) +{ + return (suspend_state != PM_SUSPEND_ON); +} +#else +static inline bool is_suspending(void) +{ + return false; +} +#endif static void (*omap2_sram_idle)(void); static void (*omap2_sram_suspend)(u32 dllctrl, void __iomem *sdrc_dlla_ctrl, @@ -65,8 +79,8 @@ static int omap2_fclks_active(void) { u32 f1, f2; - f1 = cm_read_mod_reg(CORE_MOD, CM_FCLKEN1); - f2 = cm_read_mod_reg(CORE_MOD, OMAP24XX_CM_FCLKEN2); + f1 = omap2_cm_read_mod_reg(CORE_MOD, CM_FCLKEN1); + f2 = omap2_cm_read_mod_reg(CORE_MOD, OMAP24XX_CM_FCLKEN2); /* Ignore UART clocks. These are handled by UART core (serial.c) */ f1 &= ~(OMAP24XX_EN_UART1_MASK | OMAP24XX_EN_UART2_MASK); @@ -91,9 +105,9 @@ static void omap2_enter_full_retention(void) /* Clear old wake-up events */ /* REVISIT: These write to reserved bits? */ - prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1); - prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2); - prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST); + 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); /* * Set MPU powerdomain's next power state to RETENTION; @@ -106,7 +120,7 @@ static void omap2_enter_full_retention(void) l = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0) | OMAP24XX_USBSTANDBYCTRL; omap_ctrl_writel(l, OMAP2_CONTROL_DEVCONF0); - omap2_gpio_prepare_for_idle(PWRDM_POWER_RET); + omap2_gpio_prepare_for_idle(0); if (omap2_pm_debug) { omap2_pm_dump(0, 0, 0); @@ -118,6 +132,11 @@ static void omap2_enter_full_retention(void) if (omap_irq_pending()) goto no_sleep; + /* Block console output in case it is on one of the OMAP UARTs */ + if (!is_suspending()) + if (!console_trylock()) + goto no_sleep; + omap_uart_prepare_idle(0); omap_uart_prepare_idle(1); omap_uart_prepare_idle(2); @@ -131,6 +150,9 @@ static void omap2_enter_full_retention(void) omap_uart_resume_idle(1); omap_uart_resume_idle(0); + if (!is_suspending()) + console_unlock(); + no_sleep: if (omap2_pm_debug) { unsigned long long tmp; @@ -145,30 +167,30 @@ 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); + omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1); + omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2); /* wakeup domain events - bit 1: GPT1, bit5 GPIO */ - prm_clear_mod_reg_bits(0x4 | 0x1, WKUP_MOD, PM_WKST); + omap2_prm_clear_mod_reg_bits(0x4 | 0x1, WKUP_MOD, PM_WKST); /* MPU domain wake events */ - l = prm_read_mod_reg(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); + l = omap2_prm_read_mod_reg(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); if (l & 0x01) - prm_write_mod_reg(0x01, OCP_MOD, + omap2_prm_write_mod_reg(0x01, OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); if (l & 0x20) - prm_write_mod_reg(0x20, OCP_MOD, + omap2_prm_write_mod_reg(0x20, OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); /* Mask future PRCM-to-MPU interrupts */ - prm_write_mod_reg(0x0, OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); + omap2_prm_write_mod_reg(0x0, OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET); } static int omap2_i2c_active(void) { u32 l; - l = cm_read_mod_reg(CORE_MOD, CM_FCLKEN1); + l = omap2_cm_read_mod_reg(CORE_MOD, CM_FCLKEN1); return l & (OMAP2420_EN_I2C2_MASK | OMAP2420_EN_I2C1_MASK); } @@ -179,13 +201,13 @@ static int omap2_allow_mpu_retention(void) u32 l; /* Check for MMC, UART2, UART1, McSPI2, McSPI1 and DSS1. */ - l = cm_read_mod_reg(CORE_MOD, CM_FCLKEN1); + l = omap2_cm_read_mod_reg(CORE_MOD, CM_FCLKEN1); if (l & (OMAP2420_EN_MMC_MASK | OMAP24XX_EN_UART2_MASK | OMAP24XX_EN_UART1_MASK | OMAP24XX_EN_MCSPI2_MASK | OMAP24XX_EN_MCSPI1_MASK | OMAP24XX_EN_DSS1_MASK)) return 0; /* Check for UART3. */ - l = cm_read_mod_reg(CORE_MOD, OMAP24XX_CM_FCLKEN2); + l = omap2_cm_read_mod_reg(CORE_MOD, OMAP24XX_CM_FCLKEN2); if (l & OMAP24XX_EN_UART3_MASK) return 0; if (sti_console_enabled) @@ -208,18 +230,18 @@ static void omap2_enter_mpu_retention(void) * it is in retention mode. */ if (omap2_allow_mpu_retention()) { /* REVISIT: These write to reserved bits? */ - prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1); - prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2); - prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST); + 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); /* Try to enter MPU retention */ - prm_write_mod_reg((0x01 << OMAP_POWERSTATE_SHIFT) | + omap2_prm_write_mod_reg((0x01 << OMAP_POWERSTATE_SHIFT) | OMAP_LOGICRETSTATE_MASK, MPU_MOD, OMAP2_PM_PWSTCTRL); } else { /* Block MPU retention */ - prm_write_mod_reg(OMAP_LOGICRETSTATE_MASK, MPU_MOD, + omap2_prm_write_mod_reg(OMAP_LOGICRETSTATE_MASK, MPU_MOD, OMAP2_PM_PWSTCTRL); only_idle = 1; } @@ -277,10 +299,11 @@ out: local_irq_enable(); } -static int omap2_pm_prepare(void) +#ifdef CONFIG_SUSPEND +static int omap2_pm_begin(suspend_state_t state) { - /* We cannot sleep in idle until we have resumed */ disable_hlt(); + suspend_state = state; return 0; } @@ -288,9 +311,9 @@ static int omap2_pm_suspend(void) { u32 wken_wkup, mir1; - wken_wkup = prm_read_mod_reg(WKUP_MOD, PM_WKEN); + wken_wkup = omap2_prm_read_mod_reg(WKUP_MOD, PM_WKEN); wken_wkup &= ~OMAP24XX_EN_GPT1_MASK; - prm_write_mod_reg(wken_wkup, WKUP_MOD, PM_WKEN); + omap2_prm_write_mod_reg(wken_wkup, WKUP_MOD, PM_WKEN); /* Mask GPT1 */ mir1 = omap_readl(0x480fe0a4); @@ -300,7 +323,7 @@ static int omap2_pm_suspend(void) omap2_enter_full_retention(); omap_writel(mir1, 0x480fe0a4); - prm_write_mod_reg(wken_wkup, WKUP_MOD, PM_WKEN); + omap2_prm_write_mod_reg(wken_wkup, WKUP_MOD, PM_WKEN); return 0; } @@ -321,17 +344,21 @@ static int omap2_pm_enter(suspend_state_t state) return ret; } -static void omap2_pm_finish(void) +static void omap2_pm_end(void) { + suspend_state = PM_SUSPEND_ON; enable_hlt(); } -static struct platform_suspend_ops omap_pm_ops = { - .prepare = omap2_pm_prepare, +static const struct platform_suspend_ops omap_pm_ops = { + .begin = omap2_pm_begin, .enter = omap2_pm_enter, - .finish = omap2_pm_finish, + .end = omap2_pm_end, .valid = suspend_valid_only_mem, }; +#else +static const struct platform_suspend_ops __initdata omap_pm_ops; +#endif /* CONFIG_SUSPEND */ /* XXX This function should be shareable between OMAP2xxx and OMAP3 */ static int __init clkdms_setup(struct clockdomain *clkdm, void *unused) @@ -353,7 +380,7 @@ static void __init prcm_setup_regs(void) struct powerdomain *pwrdm; /* Enable autoidle */ - prm_write_mod_reg(OMAP24XX_AUTOIDLE_MASK, OCP_MOD, + omap2_prm_write_mod_reg(OMAP24XX_AUTOIDLE_MASK, OCP_MOD, OMAP2_PRCM_SYSCONFIG_OFFSET); /* @@ -392,87 +419,87 @@ static void __init prcm_setup_regs(void) clkdm_add_wkdep(mpu_clkdm, wkup_clkdm); /* Enable clock autoidle for all domains */ - cm_write_mod_reg(OMAP24XX_AUTO_CAM_MASK | - OMAP24XX_AUTO_MAILBOXES_MASK | - OMAP24XX_AUTO_WDT4_MASK | - OMAP2420_AUTO_WDT3_MASK | - OMAP24XX_AUTO_MSPRO_MASK | - OMAP2420_AUTO_MMC_MASK | - OMAP24XX_AUTO_FAC_MASK | - OMAP2420_AUTO_EAC_MASK | - OMAP24XX_AUTO_HDQ_MASK | - OMAP24XX_AUTO_UART2_MASK | - OMAP24XX_AUTO_UART1_MASK | - OMAP24XX_AUTO_I2C2_MASK | - OMAP24XX_AUTO_I2C1_MASK | - OMAP24XX_AUTO_MCSPI2_MASK | - OMAP24XX_AUTO_MCSPI1_MASK | - OMAP24XX_AUTO_MCBSP2_MASK | - OMAP24XX_AUTO_MCBSP1_MASK | - OMAP24XX_AUTO_GPT12_MASK | - OMAP24XX_AUTO_GPT11_MASK | - OMAP24XX_AUTO_GPT10_MASK | - OMAP24XX_AUTO_GPT9_MASK | - OMAP24XX_AUTO_GPT8_MASK | - OMAP24XX_AUTO_GPT7_MASK | - OMAP24XX_AUTO_GPT6_MASK | - OMAP24XX_AUTO_GPT5_MASK | - OMAP24XX_AUTO_GPT4_MASK | - OMAP24XX_AUTO_GPT3_MASK | - OMAP24XX_AUTO_GPT2_MASK | - OMAP2420_AUTO_VLYNQ_MASK | - OMAP24XX_AUTO_DSS_MASK, - CORE_MOD, CM_AUTOIDLE1); - cm_write_mod_reg(OMAP24XX_AUTO_UART3_MASK | - OMAP24XX_AUTO_SSI_MASK | - OMAP24XX_AUTO_USB_MASK, - CORE_MOD, CM_AUTOIDLE2); - cm_write_mod_reg(OMAP24XX_AUTO_SDRC_MASK | - OMAP24XX_AUTO_GPMC_MASK | - OMAP24XX_AUTO_SDMA_MASK, - CORE_MOD, CM_AUTOIDLE3); - cm_write_mod_reg(OMAP24XX_AUTO_PKA_MASK | - OMAP24XX_AUTO_AES_MASK | - OMAP24XX_AUTO_RNG_MASK | - OMAP24XX_AUTO_SHA_MASK | - OMAP24XX_AUTO_DES_MASK, - CORE_MOD, OMAP24XX_CM_AUTOIDLE4); - - cm_write_mod_reg(OMAP2420_AUTO_DSP_IPI_MASK, OMAP24XX_DSP_MOD, - CM_AUTOIDLE); + omap2_cm_write_mod_reg(OMAP24XX_AUTO_CAM_MASK | + OMAP24XX_AUTO_MAILBOXES_MASK | + OMAP24XX_AUTO_WDT4_MASK | + OMAP2420_AUTO_WDT3_MASK | + OMAP24XX_AUTO_MSPRO_MASK | + OMAP2420_AUTO_MMC_MASK | + OMAP24XX_AUTO_FAC_MASK | + OMAP2420_AUTO_EAC_MASK | + OMAP24XX_AUTO_HDQ_MASK | + OMAP24XX_AUTO_UART2_MASK | + OMAP24XX_AUTO_UART1_MASK | + OMAP24XX_AUTO_I2C2_MASK | + OMAP24XX_AUTO_I2C1_MASK | + OMAP24XX_AUTO_MCSPI2_MASK | + OMAP24XX_AUTO_MCSPI1_MASK | + OMAP24XX_AUTO_MCBSP2_MASK | + OMAP24XX_AUTO_MCBSP1_MASK | + OMAP24XX_AUTO_GPT12_MASK | + OMAP24XX_AUTO_GPT11_MASK | + OMAP24XX_AUTO_GPT10_MASK | + OMAP24XX_AUTO_GPT9_MASK | + OMAP24XX_AUTO_GPT8_MASK | + OMAP24XX_AUTO_GPT7_MASK | + OMAP24XX_AUTO_GPT6_MASK | + OMAP24XX_AUTO_GPT5_MASK | + OMAP24XX_AUTO_GPT4_MASK | + OMAP24XX_AUTO_GPT3_MASK | + OMAP24XX_AUTO_GPT2_MASK | + OMAP2420_AUTO_VLYNQ_MASK | + OMAP24XX_AUTO_DSS_MASK, + CORE_MOD, CM_AUTOIDLE1); + omap2_cm_write_mod_reg(OMAP24XX_AUTO_UART3_MASK | + OMAP24XX_AUTO_SSI_MASK | + OMAP24XX_AUTO_USB_MASK, + CORE_MOD, CM_AUTOIDLE2); + omap2_cm_write_mod_reg(OMAP24XX_AUTO_SDRC_MASK | + OMAP24XX_AUTO_GPMC_MASK | + OMAP24XX_AUTO_SDMA_MASK, + CORE_MOD, CM_AUTOIDLE3); + omap2_cm_write_mod_reg(OMAP24XX_AUTO_PKA_MASK | + OMAP24XX_AUTO_AES_MASK | + OMAP24XX_AUTO_RNG_MASK | + OMAP24XX_AUTO_SHA_MASK | + OMAP24XX_AUTO_DES_MASK, + CORE_MOD, OMAP24XX_CM_AUTOIDLE4); + + omap2_cm_write_mod_reg(OMAP2420_AUTO_DSP_IPI_MASK, OMAP24XX_DSP_MOD, + CM_AUTOIDLE); /* Put DPLL and both APLLs into autoidle mode */ - cm_write_mod_reg((0x03 << OMAP24XX_AUTO_DPLL_SHIFT) | - (0x03 << OMAP24XX_AUTO_96M_SHIFT) | - (0x03 << OMAP24XX_AUTO_54M_SHIFT), - PLL_MOD, CM_AUTOIDLE); - - cm_write_mod_reg(OMAP24XX_AUTO_OMAPCTRL_MASK | - OMAP24XX_AUTO_WDT1_MASK | - OMAP24XX_AUTO_MPU_WDT_MASK | - OMAP24XX_AUTO_GPIOS_MASK | - OMAP24XX_AUTO_32KSYNC_MASK | - OMAP24XX_AUTO_GPT1_MASK, - WKUP_MOD, CM_AUTOIDLE); + omap2_cm_write_mod_reg((0x03 << OMAP24XX_AUTO_DPLL_SHIFT) | + (0x03 << OMAP24XX_AUTO_96M_SHIFT) | + (0x03 << OMAP24XX_AUTO_54M_SHIFT), + PLL_MOD, CM_AUTOIDLE); + + omap2_cm_write_mod_reg(OMAP24XX_AUTO_OMAPCTRL_MASK | + OMAP24XX_AUTO_WDT1_MASK | + OMAP24XX_AUTO_MPU_WDT_MASK | + OMAP24XX_AUTO_GPIOS_MASK | + OMAP24XX_AUTO_32KSYNC_MASK | + OMAP24XX_AUTO_GPT1_MASK, + WKUP_MOD, CM_AUTOIDLE); /* REVISIT: Configure number of 32 kHz clock cycles for sys_clk * stabilisation */ - prm_write_mod_reg(15 << OMAP_SETUP_TIME_SHIFT, OMAP24XX_GR_MOD, - OMAP2_PRCM_CLKSSETUP_OFFSET); + omap2_prm_write_mod_reg(15 << OMAP_SETUP_TIME_SHIFT, OMAP24XX_GR_MOD, + OMAP2_PRCM_CLKSSETUP_OFFSET); /* Configure automatic voltage transition */ - prm_write_mod_reg(2 << OMAP_SETUP_TIME_SHIFT, OMAP24XX_GR_MOD, - OMAP2_PRCM_VOLTSETUP_OFFSET); - prm_write_mod_reg(OMAP24XX_AUTO_EXTVOLT_MASK | - (0x1 << OMAP24XX_SETOFF_LEVEL_SHIFT) | - OMAP24XX_MEMRETCTRL_MASK | - (0x1 << OMAP24XX_SETRET_LEVEL_SHIFT) | - (0x0 << OMAP24XX_VOLT_LEVEL_SHIFT), - OMAP24XX_GR_MOD, OMAP2_PRCM_VOLTCTRL_OFFSET); + omap2_prm_write_mod_reg(2 << OMAP_SETUP_TIME_SHIFT, OMAP24XX_GR_MOD, + OMAP2_PRCM_VOLTSETUP_OFFSET); + omap2_prm_write_mod_reg(OMAP24XX_AUTO_EXTVOLT_MASK | + (0x1 << OMAP24XX_SETOFF_LEVEL_SHIFT) | + OMAP24XX_MEMRETCTRL_MASK | + (0x1 << OMAP24XX_SETRET_LEVEL_SHIFT) | + (0x0 << OMAP24XX_VOLT_LEVEL_SHIFT), + OMAP24XX_GR_MOD, OMAP2_PRCM_VOLTCTRL_OFFSET); /* Enable wake-up events */ - prm_write_mod_reg(OMAP24XX_EN_GPIOS_MASK | OMAP24XX_EN_GPT1_MASK, - WKUP_MOD, PM_WKEN); + omap2_prm_write_mod_reg(OMAP24XX_EN_GPIOS_MASK | OMAP24XX_EN_GPT1_MASK, + WKUP_MOD, PM_WKEN); } static int __init omap2_pm_init(void) @@ -483,7 +510,7 @@ static int __init omap2_pm_init(void) return -ENODEV; printk(KERN_INFO "Power Management for OMAP2 initializing\n"); - l = prm_read_mod_reg(OCP_MOD, OMAP2_PRCM_REVISION_OFFSET); + l = omap2_prm_read_mod_reg(OCP_MOD, OMAP2_PRCM_REVISION_OFFSET); printk(KERN_INFO "PRCM revision %d.%d\n", (l >> 4) & 0x0f, l & 0x0f); /* Look up important powerdomains */ |