diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-omap2/pm.c | 270 |
1 files changed, 1 insertions, 269 deletions
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c index baf7d82..aad781d 100644 --- a/arch/arm/mach-omap2/pm.c +++ b/arch/arm/mach-omap2/pm.c @@ -23,6 +23,7 @@ #include <linux/sysfs.h> #include <linux/module.h> #include <linux/delay.h> +#include <linux/clk.h> #include <asm/io.h> #include <asm/irq.h> @@ -36,8 +37,6 @@ #include <asm/arch/sram.h> #include <asm/arch/pm.h> -#include "prcm-regs.h" - static struct clk *vclk; static void (*omap2_sram_idle)(void); static void (*omap2_sram_suspend)(int dllctrl, int cpu_rev); @@ -78,251 +77,8 @@ static int omap2_pm_prepare(void) return 0; } -#define INT0_WAKE_MASK (OMAP_IRQ_BIT(INT_24XX_GPIO_BANK1) | \ - OMAP_IRQ_BIT(INT_24XX_GPIO_BANK2) | \ - OMAP_IRQ_BIT(INT_24XX_GPIO_BANK3)) - -#define INT1_WAKE_MASK (OMAP_IRQ_BIT(INT_24XX_GPIO_BANK4)) - -#define INT2_WAKE_MASK (OMAP_IRQ_BIT(INT_24XX_UART1_IRQ) | \ - OMAP_IRQ_BIT(INT_24XX_UART2_IRQ) | \ - OMAP_IRQ_BIT(INT_24XX_UART3_IRQ)) - -#define preg(reg) printk("%s\t(0x%p):\t0x%08x\n", #reg, ®, reg); - -static void omap2_pm_debug(char * desc) -{ - printk("%s:\n", desc); - - preg(CM_CLKSTCTRL_MPU); - preg(CM_CLKSTCTRL_CORE); - preg(CM_CLKSTCTRL_GFX); - preg(CM_CLKSTCTRL_DSP); - preg(CM_CLKSTCTRL_MDM); - - preg(PM_PWSTCTRL_MPU); - preg(PM_PWSTCTRL_CORE); - preg(PM_PWSTCTRL_GFX); - preg(PM_PWSTCTRL_DSP); - preg(PM_PWSTCTRL_MDM); - - preg(PM_PWSTST_MPU); - preg(PM_PWSTST_CORE); - preg(PM_PWSTST_GFX); - preg(PM_PWSTST_DSP); - preg(PM_PWSTST_MDM); - - preg(CM_AUTOIDLE1_CORE); - preg(CM_AUTOIDLE2_CORE); - preg(CM_AUTOIDLE3_CORE); - preg(CM_AUTOIDLE4_CORE); - preg(CM_AUTOIDLE_WKUP); - preg(CM_AUTOIDLE_PLL); - preg(CM_AUTOIDLE_DSP); - preg(CM_AUTOIDLE_MDM); - - preg(CM_ICLKEN1_CORE); - preg(CM_ICLKEN2_CORE); - preg(CM_ICLKEN3_CORE); - preg(CM_ICLKEN4_CORE); - preg(CM_ICLKEN_GFX); - preg(CM_ICLKEN_WKUP); - preg(CM_ICLKEN_DSP); - preg(CM_ICLKEN_MDM); - - preg(CM_IDLEST1_CORE); - preg(CM_IDLEST2_CORE); - preg(CM_IDLEST3_CORE); - preg(CM_IDLEST4_CORE); - preg(CM_IDLEST_GFX); - preg(CM_IDLEST_WKUP); - preg(CM_IDLEST_CKGEN); - preg(CM_IDLEST_DSP); - preg(CM_IDLEST_MDM); - - preg(RM_RSTST_MPU); - preg(RM_RSTST_GFX); - preg(RM_RSTST_WKUP); - preg(RM_RSTST_DSP); - preg(RM_RSTST_MDM); - - preg(PM_WKDEP_MPU); - preg(PM_WKDEP_CORE); - preg(PM_WKDEP_GFX); - preg(PM_WKDEP_DSP); - preg(PM_WKDEP_MDM); - - preg(CM_FCLKEN_WKUP); - preg(CM_ICLKEN_WKUP); - preg(CM_IDLEST_WKUP); - preg(CM_AUTOIDLE_WKUP); - preg(CM_CLKSEL_WKUP); - - preg(PM_WKEN_WKUP); - preg(PM_WKST_WKUP); -} - -static inline void omap2_pm_save_registers(void) -{ - /* Save interrupt registers */ - OMAP24XX_SAVE(INTC_MIR0); - OMAP24XX_SAVE(INTC_MIR1); - OMAP24XX_SAVE(INTC_MIR2); - - /* Save power control registers */ - OMAP24XX_SAVE(CM_CLKSTCTRL_MPU); - OMAP24XX_SAVE(CM_CLKSTCTRL_CORE); - OMAP24XX_SAVE(CM_CLKSTCTRL_GFX); - OMAP24XX_SAVE(CM_CLKSTCTRL_DSP); - OMAP24XX_SAVE(CM_CLKSTCTRL_MDM); - - /* Save power state registers */ - OMAP24XX_SAVE(PM_PWSTCTRL_MPU); - OMAP24XX_SAVE(PM_PWSTCTRL_CORE); - OMAP24XX_SAVE(PM_PWSTCTRL_GFX); - OMAP24XX_SAVE(PM_PWSTCTRL_DSP); - OMAP24XX_SAVE(PM_PWSTCTRL_MDM); - - /* Save autoidle registers */ - OMAP24XX_SAVE(CM_AUTOIDLE1_CORE); - OMAP24XX_SAVE(CM_AUTOIDLE2_CORE); - OMAP24XX_SAVE(CM_AUTOIDLE3_CORE); - OMAP24XX_SAVE(CM_AUTOIDLE4_CORE); - OMAP24XX_SAVE(CM_AUTOIDLE_WKUP); - OMAP24XX_SAVE(CM_AUTOIDLE_PLL); - OMAP24XX_SAVE(CM_AUTOIDLE_DSP); - OMAP24XX_SAVE(CM_AUTOIDLE_MDM); - - /* Save idle state registers */ - OMAP24XX_SAVE(CM_IDLEST1_CORE); - OMAP24XX_SAVE(CM_IDLEST2_CORE); - OMAP24XX_SAVE(CM_IDLEST3_CORE); - OMAP24XX_SAVE(CM_IDLEST4_CORE); - OMAP24XX_SAVE(CM_IDLEST_GFX); - OMAP24XX_SAVE(CM_IDLEST_WKUP); - OMAP24XX_SAVE(CM_IDLEST_CKGEN); - OMAP24XX_SAVE(CM_IDLEST_DSP); - OMAP24XX_SAVE(CM_IDLEST_MDM); - - /* Save clock registers */ - OMAP24XX_SAVE(CM_FCLKEN1_CORE); - OMAP24XX_SAVE(CM_FCLKEN2_CORE); - OMAP24XX_SAVE(CM_ICLKEN1_CORE); - OMAP24XX_SAVE(CM_ICLKEN2_CORE); - OMAP24XX_SAVE(CM_ICLKEN3_CORE); - OMAP24XX_SAVE(CM_ICLKEN4_CORE); -} - -static inline void omap2_pm_restore_registers(void) -{ - /* Restore clock state registers */ - OMAP24XX_RESTORE(CM_CLKSTCTRL_MPU); - OMAP24XX_RESTORE(CM_CLKSTCTRL_CORE); - OMAP24XX_RESTORE(CM_CLKSTCTRL_GFX); - OMAP24XX_RESTORE(CM_CLKSTCTRL_DSP); - OMAP24XX_RESTORE(CM_CLKSTCTRL_MDM); - - /* Restore power state registers */ - OMAP24XX_RESTORE(PM_PWSTCTRL_MPU); - OMAP24XX_RESTORE(PM_PWSTCTRL_CORE); - OMAP24XX_RESTORE(PM_PWSTCTRL_GFX); - OMAP24XX_RESTORE(PM_PWSTCTRL_DSP); - OMAP24XX_RESTORE(PM_PWSTCTRL_MDM); - - /* Restore idle state registers */ - OMAP24XX_RESTORE(CM_IDLEST1_CORE); - OMAP24XX_RESTORE(CM_IDLEST2_CORE); - OMAP24XX_RESTORE(CM_IDLEST3_CORE); - OMAP24XX_RESTORE(CM_IDLEST4_CORE); - OMAP24XX_RESTORE(CM_IDLEST_GFX); - OMAP24XX_RESTORE(CM_IDLEST_WKUP); - OMAP24XX_RESTORE(CM_IDLEST_CKGEN); - OMAP24XX_RESTORE(CM_IDLEST_DSP); - OMAP24XX_RESTORE(CM_IDLEST_MDM); - - /* Restore autoidle registers */ - OMAP24XX_RESTORE(CM_AUTOIDLE1_CORE); - OMAP24XX_RESTORE(CM_AUTOIDLE2_CORE); - OMAP24XX_RESTORE(CM_AUTOIDLE3_CORE); - OMAP24XX_RESTORE(CM_AUTOIDLE4_CORE); - OMAP24XX_RESTORE(CM_AUTOIDLE_WKUP); - OMAP24XX_RESTORE(CM_AUTOIDLE_PLL); - OMAP24XX_RESTORE(CM_AUTOIDLE_DSP); - OMAP24XX_RESTORE(CM_AUTOIDLE_MDM); - - /* Restore clock registers */ - OMAP24XX_RESTORE(CM_FCLKEN1_CORE); - OMAP24XX_RESTORE(CM_FCLKEN2_CORE); - OMAP24XX_RESTORE(CM_ICLKEN1_CORE); - OMAP24XX_RESTORE(CM_ICLKEN2_CORE); - OMAP24XX_RESTORE(CM_ICLKEN3_CORE); - OMAP24XX_RESTORE(CM_ICLKEN4_CORE); - - /* REVISIT: Clear interrupts here */ - - /* Restore interrupt registers */ - OMAP24XX_RESTORE(INTC_MIR0); - OMAP24XX_RESTORE(INTC_MIR1); - OMAP24XX_RESTORE(INTC_MIR2); -} - static int omap2_pm_suspend(void) { - int processor_type = 0; - - /* REVISIT: 0x21 or 0x26? */ - if (cpu_is_omap2420()) - processor_type = 0x21; - - if (!processor_type) - return -ENOTSUPP; - - local_irq_disable(); - local_fiq_disable(); - - omap2_pm_save_registers(); - - /* Disable interrupts except for the wake events */ - INTC_MIR_SET0 = 0xffffffff & ~INT0_WAKE_MASK; - INTC_MIR_SET1 = 0xffffffff & ~INT1_WAKE_MASK; - INTC_MIR_SET2 = 0xffffffff & ~INT2_WAKE_MASK; - - pmdomain_set_autoidle(); - - /* Clear old wake-up events */ - PM_WKST1_CORE = 0; - PM_WKST2_CORE = 0; - PM_WKST_WKUP = 0; - - /* Enable wake-up events */ - PM_WKEN1_CORE = (1 << 22) | (1 << 21); /* UART1 & 2 */ - PM_WKEN2_CORE = (1 << 2); /* UART3 */ - PM_WKEN_WKUP = (1 << 2) | (1 << 0); /* GPIO & GPT1 */ - - /* Disable clocks except for CM_ICLKEN2_CORE. It gets disabled - * in the SRAM suspend code */ - CM_FCLKEN1_CORE = 0; - CM_FCLKEN2_CORE = 0; - CM_ICLKEN1_CORE = 0; - CM_ICLKEN3_CORE = 0; - CM_ICLKEN4_CORE = 0; - - omap2_pm_debug("Status before suspend"); - - /* Must wait for serial buffers to clear */ - mdelay(200); - - /* Jump to SRAM suspend code - * REVISIT: When is this SDRC_DLLB_CTRL? - */ - omap2_sram_suspend(SDRC_DLLA_CTRL, processor_type); - - /* Back from sleep */ - omap2_pm_restore_registers(); - - local_fiq_enable(); - local_irq_enable(); - return 0; } @@ -357,30 +113,6 @@ static struct platform_suspend_ops omap_pm_ops = { int __init omap2_pm_init(void) { - printk("Power Management for TI OMAP.\n"); - - vclk = clk_get(NULL, "virt_prcm_set"); - if (IS_ERR(vclk)) { - printk(KERN_ERR "Could not get PM vclk\n"); - return -ENODEV; - } - - /* - * We copy the assembler sleep/wakeup routines to SRAM. - * These routines need to be in SRAM as that's the only - * memory the MPU can see when it wakes up. - */ - omap2_sram_idle = omap_sram_push(omap24xx_idle_loop_suspend, - omap24xx_idle_loop_suspend_sz); - - omap2_sram_suspend = omap_sram_push(omap24xx_cpu_suspend, - omap24xx_cpu_suspend_sz); - - suspend_set_ops(&omap_pm_ops); - pm_idle = omap2_pm_idle; - - pmdomain_init(); - return 0; } |
