diff options
Diffstat (limited to 'arch/arm/mach-omap2/pm34xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/pm34xx.c | 272 |
1 files changed, 160 insertions, 112 deletions
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c index 75c0cd13ad8..2f864e4b085 100644 --- a/arch/arm/mach-omap2/pm34xx.c +++ b/arch/arm/mach-omap2/pm34xx.c @@ -28,10 +28,11 @@ #include <linux/clk.h> #include <linux/delay.h> #include <linux/slab.h> +#include <linux/console.h> #include <plat/sram.h> -#include <plat/clockdomain.h> -#include <plat/powerdomain.h> +#include "clockdomain.h" +#include "powerdomain.h" #include <plat/serial.h> #include <plat/sdrc.h> #include <plat/prcm.h> @@ -40,20 +41,36 @@ #include <asm/tlbflush.h> -#include "cm.h" +#include "cm2xxx_3xxx.h" #include "cm-regbits-34xx.h" #include "prm-regbits-34xx.h" -#include "prm.h" +#include "prm2xxx_3xxx.h" #include "pm.h" #include "sdrc.h" #include "control.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 + /* Scratchpad offsets */ #define OMAP343X_TABLE_ADDRESS_OFFSET 0xc4 #define OMAP343X_TABLE_VALUE_OFFSET 0xc0 #define OMAP343X_CONTROL_REG_VALUE_OFFSET 0xc8 +/* pm34xx errata defined in pm.h */ +u16 pm34xx_errata; + struct power_state { struct powerdomain *pwrdm; u32 next_state; @@ -88,12 +105,12 @@ static void omap3_enable_io_chain(void) int timeout = 0; if (omap_rev() >= OMAP3430_REV_ES3_1) { - prm_set_mod_reg_bits(OMAP3430_EN_IO_CHAIN_MASK, WKUP_MOD, + omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_CHAIN_MASK, WKUP_MOD, PM_WKEN); /* Do a readback to assure write has been done */ - prm_read_mod_reg(WKUP_MOD, PM_WKEN); + omap2_prm_read_mod_reg(WKUP_MOD, PM_WKEN); - while (!(prm_read_mod_reg(WKUP_MOD, PM_WKEN) & + while (!(omap2_prm_read_mod_reg(WKUP_MOD, PM_WKEN) & OMAP3430_ST_IO_CHAIN_MASK)) { timeout++; if (timeout > 1000) { @@ -101,7 +118,7 @@ static void omap3_enable_io_chain(void) "activation failed.\n"); return; } - prm_set_mod_reg_bits(OMAP3430_ST_IO_CHAIN_MASK, + omap2_prm_set_mod_reg_bits(OMAP3430_ST_IO_CHAIN_MASK, WKUP_MOD, PM_WKEN); } } @@ -110,26 +127,17 @@ static void omap3_enable_io_chain(void) static void omap3_disable_io_chain(void) { if (omap_rev() >= OMAP3430_REV_ES3_1) - prm_clear_mod_reg_bits(OMAP3430_EN_IO_CHAIN_MASK, WKUP_MOD, + omap2_prm_clear_mod_reg_bits(OMAP3430_EN_IO_CHAIN_MASK, WKUP_MOD, PM_WKEN); } static void omap3_core_save_context(void) { - u32 control_padconf_off; - - /* Save the padconf registers */ - control_padconf_off = omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_OFF); - 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)) - udelay(1); + omap3_ctrl_save_padconf(); /* * Force write last pad into memory, as this can fail in some - * cases according to erratas 1.157, 1.185 + * cases according to errata 1.157, 1.185 */ omap_ctrl_writel(omap_ctrl_readl(OMAP343X_PADCONF_ETK_D14), OMAP343X_CONTROL_MEM_WKUP + 0x2a0); @@ -160,9 +168,10 @@ static void omap3_core_restore_context(void) * once during boot sequence, but this works as we are not using secure * services. */ -static void omap3_save_secure_ram_context(u32 target_mpu_state) +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) { /* @@ -173,7 +182,7 @@ static void omap3_save_secure_ram_context(u32 target_mpu_state) pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON); ret = _omap_save_secure_sram((u32 *) __pa(omap3_secure_ram_storage)); - pwrdm_set_next_pwrst(mpu_pwrdm, target_mpu_state); + pwrdm_set_next_pwrst(mpu_pwrdm, mpu_next_state); /* Following is for error tracking, it should not happen */ if (ret) { printk(KERN_ERR "save_secure_sram() returns %08x\n", @@ -204,27 +213,27 @@ static int prcm_clear_mod_irqs(s16 module, u8 regs) OMAP3430ES2_PM_MPUGRPSEL3 : OMAP3430_PM_MPUGRPSEL; int c = 0; - wkst = prm_read_mod_reg(module, wkst_off); - wkst &= prm_read_mod_reg(module, grpsel_off); + wkst = omap2_prm_read_mod_reg(module, wkst_off); + wkst &= omap2_prm_read_mod_reg(module, grpsel_off); if (wkst) { - iclk = cm_read_mod_reg(module, iclk_off); - fclk = cm_read_mod_reg(module, fclk_off); + iclk = omap2_cm_read_mod_reg(module, iclk_off); + fclk = omap2_cm_read_mod_reg(module, fclk_off); while (wkst) { clken = wkst; - cm_set_mod_reg_bits(clken, module, iclk_off); + 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; - cm_set_mod_reg_bits(clken, module, fclk_off); - prm_write_mod_reg(wkst, module, wkst_off); - wkst = prm_read_mod_reg(module, wkst_off); + 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); c++; } - cm_write_mod_reg(iclk, module, iclk_off); - cm_write_mod_reg(fclk, module, fclk_off); + omap2_cm_write_mod_reg(iclk, module, iclk_off); + omap2_cm_write_mod_reg(fclk, module, fclk_off); } return c; @@ -267,9 +276,9 @@ static irqreturn_t prcm_interrupt_handler (int irq, void *dev_id) u32 irqenable_mpu, irqstatus_mpu; int c = 0; - irqenable_mpu = prm_read_mod_reg(OCP_MOD, + irqenable_mpu = omap2_prm_read_mod_reg(OCP_MOD, OMAP3_PRM_IRQENABLE_MPU_OFFSET); - irqstatus_mpu = prm_read_mod_reg(OCP_MOD, + irqstatus_mpu = omap2_prm_read_mod_reg(OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET); irqstatus_mpu &= irqenable_mpu; @@ -290,10 +299,10 @@ static irqreturn_t prcm_interrupt_handler (int irq, void *dev_id) "no code to handle it (%08x)\n", irqstatus_mpu); } - prm_write_mod_reg(irqstatus_mpu, OCP_MOD, + omap2_prm_write_mod_reg(irqstatus_mpu, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET); - irqstatus_mpu = prm_read_mod_reg(OCP_MOD, + irqstatus_mpu = omap2_prm_read_mod_reg(OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET); irqstatus_mpu &= irqenable_mpu; @@ -343,6 +352,7 @@ void omap_sram_idle(void) 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, per_prev_state; u32 sdrc_pwr = 0; @@ -381,15 +391,23 @@ void omap_sram_idle(void) if (omap3_has_io_wakeup() && (per_next_state < PWRDM_POWER_ON || core_next_state < PWRDM_POWER_ON)) { - prm_set_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, PM_WKEN); + omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, PM_WKEN); omap3_enable_io_chain(); } + /* Block console output in case it is on one of the OMAP UARTs */ + if (!is_suspending()) + if (per_next_state < PWRDM_POWER_ON || + core_next_state < PWRDM_POWER_ON) + if (!console_trylock()) + goto console_still_active; + /* PER */ if (per_next_state < PWRDM_POWER_ON) { + per_going_off = (per_next_state == PWRDM_POWER_OFF) ? 1 : 0; omap_uart_prepare_idle(2); omap_uart_prepare_idle(3); - omap2_gpio_prepare_for_idle(per_next_state); + omap2_gpio_prepare_for_idle(per_going_off); if (per_next_state == PWRDM_POWER_OFF) omap3_per_save_context(); } @@ -400,7 +418,7 @@ void omap_sram_idle(void) omap_uart_prepare_idle(1); if (core_next_state == PWRDM_POWER_OFF) { omap3_core_save_context(); - omap3_prcm_save_context(); + omap3_cm_save_context(); } } @@ -409,7 +427,7 @@ void omap_sram_idle(void) /* * 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 errata 1.142. + * of AUTO_CNT = 1 enabled. This takes care of erratum ID i443. * Hence store/restore the SDRC_POWER register here. */ if (omap_rev() >= OMAP3430_REV_ES3_0 && @@ -440,14 +458,14 @@ void omap_sram_idle(void) core_prev_state = pwrdm_read_prev_pwrst(core_pwrdm); if (core_prev_state == PWRDM_POWER_OFF) { omap3_core_restore_context(); - omap3_prcm_restore_context(); + omap3_cm_restore_context(); omap3_sram_restore_context(); omap2_sms_restore_context(); } omap_uart_resume_idle(0); omap_uart_resume_idle(1); if (core_next_state == PWRDM_POWER_OFF) - prm_clear_mod_reg_bits(OMAP3430_AUTO_OFF_MASK, + omap2_prm_clear_mod_reg_bits(OMAP3430_AUTO_OFF_MASK, OMAP3430_GR_MOD, OMAP3_PRM_VOLTCTRL_OFFSET); } @@ -463,11 +481,16 @@ void omap_sram_idle(void) omap_uart_resume_idle(3); } + if (!is_suspending()) + console_unlock(); + +console_still_active: /* Disable IO-PAD and IO-CHAIN wakeup */ if (omap3_has_io_wakeup() && (per_next_state < PWRDM_POWER_ON || core_next_state < PWRDM_POWER_ON)) { - prm_clear_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, PM_WKEN); + omap2_prm_clear_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, + PM_WKEN); omap3_disable_io_chain(); } @@ -504,14 +527,6 @@ out: } #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; @@ -574,14 +589,10 @@ static int omap3_pm_enter(suspend_state_t unused) 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) { + disable_hlt(); suspend_state = state; omap_uart_enable_irqs(0); return 0; @@ -591,15 +602,14 @@ static void omap3_pm_end(void) { suspend_state = PM_SUSPEND_ON; omap_uart_enable_irqs(1); + enable_hlt(); return; } -static struct platform_suspend_ops omap_pm_ops = { +static const 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, }; #endif /* CONFIG_SUSPEND */ @@ -618,21 +628,21 @@ 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_MASK | + 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_MASK, + omap2_cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_MASK, OMAP3430_IVA2_MOD, CM_FCLKEN); /* Set IVA2 boot mode to 'idle' */ @@ -640,13 +650,13 @@ static void __init omap3_iva_idle(void) OMAP343X_CONTROL_IVA2_BOOTMOD); /* Un-reset IVA2 */ - prm_write_mod_reg(0, OMAP3430_IVA2_MOD, OMAP2_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_MASK | + omap2_prm_write_mod_reg(OMAP3430_RST1_IVA2_MASK | OMAP3430_RST2_IVA2_MASK | OMAP3430_RST3_IVA2_MASK, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); @@ -670,10 +680,10 @@ 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_MASK | + 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); - prm_write_mod_reg(0, CORE_MOD, OMAP2_RM_RSTCTRL); + omap2_prm_write_mod_reg(0, CORE_MOD, OMAP2_RM_RSTCTRL); } static void __init prcm_setup_regs(void) @@ -688,23 +698,23 @@ 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); + omap2_prm_write_mod_reg(0, OMAP3430_IVA2_MOD, PM_WKDEP); + omap2_prm_write_mod_reg(0, MPU_MOD, PM_WKDEP); + omap2_prm_write_mod_reg(0, OMAP3430_DSS_MOD, PM_WKDEP); + omap2_prm_write_mod_reg(0, OMAP3430_NEON_MOD, PM_WKDEP); + omap2_prm_write_mod_reg(0, OMAP3430_CAM_MOD, PM_WKDEP); + omap2_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); + omap2_prm_write_mod_reg(0, OMAP3430ES2_SGX_MOD, PM_WKDEP); + omap2_prm_write_mod_reg(0, OMAP3430ES2_USBHOST_MOD, PM_WKDEP); } else - prm_write_mod_reg(0, GFX_MOD, PM_WKDEP); + omap2_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( + omap2_cm_write_mod_reg( OMAP3430_AUTO_MODEM_MASK | OMAP3430ES2_AUTO_MMC3_MASK | OMAP3430ES2_AUTO_ICR_MASK | @@ -737,7 +747,7 @@ static void __init prcm_setup_regs(void) OMAP3430_AUTO_SSI_MASK, CORE_MOD, CM_AUTOIDLE1); - cm_write_mod_reg( + omap2_cm_write_mod_reg( OMAP3430_AUTO_PKA_MASK | OMAP3430_AUTO_AES1_MASK | OMAP3430_AUTO_RNG_MASK | @@ -746,13 +756,13 @@ static void __init prcm_setup_regs(void) CORE_MOD, CM_AUTOIDLE2); if (omap_rev() > OMAP3430_REV_ES1_0) { - cm_write_mod_reg( + omap2_cm_write_mod_reg( OMAP3430_AUTO_MAD2D_MASK | OMAP3430ES2_AUTO_USBTLL_MASK, CORE_MOD, CM_AUTOIDLE3); } - cm_write_mod_reg( + omap2_cm_write_mod_reg( OMAP3430_AUTO_WDT2_MASK | OMAP3430_AUTO_WDT1_MASK | OMAP3430_AUTO_GPIO1_MASK | @@ -761,17 +771,17 @@ static void __init prcm_setup_regs(void) OMAP3430_AUTO_GPT1_MASK, WKUP_MOD, CM_AUTOIDLE); - cm_write_mod_reg( + omap2_cm_write_mod_reg( OMAP3430_AUTO_DSS_MASK, OMAP3430_DSS_MOD, CM_AUTOIDLE); - cm_write_mod_reg( + omap2_cm_write_mod_reg( OMAP3430_AUTO_CAM_MASK, OMAP3430_CAM_MOD, CM_AUTOIDLE); - cm_write_mod_reg( + omap2_cm_write_mod_reg( omap3630_auto_uart4_mask | OMAP3430_AUTO_GPIO6_MASK | OMAP3430_AUTO_GPIO5_MASK | @@ -795,7 +805,7 @@ static void __init prcm_setup_regs(void) CM_AUTOIDLE); if (omap_rev() > OMAP3430_REV_ES1_0) { - cm_write_mod_reg( + omap2_cm_write_mod_reg( OMAP3430ES2_AUTO_USBHOST_MASK, OMAP3430ES2_USBHOST_MOD, CM_AUTOIDLE); @@ -807,16 +817,16 @@ static void __init prcm_setup_regs(void) * Set all plls to autoidle. This is needed until autoidle is * enabled by clockfw */ - cm_write_mod_reg(1 << OMAP3430_AUTO_IVA2_DPLL_SHIFT, + omap2_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, + omap2_cm_write_mod_reg(1 << OMAP3430_AUTO_MPU_DPLL_SHIFT, MPU_MOD, CM_AUTOIDLE2); - cm_write_mod_reg((1 << OMAP3430_AUTO_PERIPH_DPLL_SHIFT) | + omap2_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, + omap2_cm_write_mod_reg(1 << OMAP3430ES2_AUTO_PERIPH2_DPLL_SHIFT, PLL_MOD, CM_AUTOIDLE2); @@ -825,31 +835,31 @@ static void __init prcm_setup_regs(void) * 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_MASK | OMAP3430_EN_GPIO1_MASK | + 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_GRPSEL_GPIO1_MASK | + 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_MASK | OMAP3430_WKUP_EN_MASK, + omap2_prm_write_mod_reg(OMAP3430_IO_EN_MASK | OMAP3430_WKUP_EN_MASK, OCP_MOD, OMAP3_PRM_IRQENABLE_MPU_OFFSET); /* Enable PM_WKEN to support DSS LPR */ - prm_write_mod_reg(OMAP3430_PM_WKEN_DSS_EN_DSS_MASK, + omap2_prm_write_mod_reg(OMAP3430_PM_WKEN_DSS_EN_DSS_MASK, OMAP3430_DSS_MOD, PM_WKEN); /* Enable wakeups in PER */ - prm_write_mod_reg(omap3630_en_uart4_mask | + 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 | @@ -857,7 +867,7 @@ static void __init prcm_setup_regs(void) OMAP3430_EN_MCBSP4_MASK, OMAP3430_PER_MOD, PM_WKEN); /* and allow them to wake up MPU */ - prm_write_mod_reg(omap3630_grpsel_uart4_mask | + omap2_prm_write_mod_reg(omap3630_grpsel_uart4_mask | OMAP3430_GRPSEL_GPIO2_MASK | OMAP3430_GRPSEL_GPIO3_MASK | OMAP3430_GRPSEL_GPIO4_MASK | @@ -870,22 +880,22 @@ static void __init prcm_setup_regs(void) 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); + 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, 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); + 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); omap3_iva_idle(); omap3_d2d_idle(); @@ -902,12 +912,29 @@ void omap3_pm_off_mode_enable(int enable) state = PWRDM_POWER_RET; #ifdef CONFIG_CPU_IDLE - omap3_cpuidle_update_states(); + /* + * Erratum i583: implementation for ES rev < Es1.2 on 3630. We cannot + * enable OFF mode in a stable form for previous revisions, restrict + * instead to RET + */ + if (IS_PM34XX_ERRATUM(PM_SDRC_WAKEUP_ERRATUM_i583)) + omap3_cpuidle_update_states(state, PWRDM_POWER_RET); + else + omap3_cpuidle_update_states(state, state); #endif list_for_each_entry(pwrst, &pwrst_list, node) { - pwrst->next_state = state; - omap_set_pwrdm_state(pwrst->pwrdm, state); + if (IS_PM34XX_ERRATUM(PM_SDRC_WAKEUP_ERRATUM_i583) && + pwrst->pwrdm == core_pwrdm && + state == PWRDM_POWER_OFF) { + pwrst->next_state = PWRDM_POWER_RET; + WARN_ONCE(1, + "%s: Core OFF disabled due to errata i583\n", + __func__); + } else { + pwrst->next_state = state; + } + omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state); } } @@ -979,6 +1006,17 @@ void omap_push_sram_idle(void) 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; + } +} + static int __init omap3_pm_init(void) { struct power_state *pwrst, *tmp; @@ -988,6 +1026,8 @@ static int __init omap3_pm_init(void) if (!cpu_is_omap34xx()) return -ENODEV; + pm_errata_configure(); + printk(KERN_ERR "Power Management for TI OMAP3.\n"); /* XXX prcm_setup_regs needs to be before enabling hw @@ -1035,6 +1075,14 @@ static int __init omap3_pm_init(void) 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(); + clkdm_add_wkdep(neon_clkdm, mpu_clkdm); if (omap_type() != OMAP2_DEVICE_TYPE_GP) { omap3_secure_ram_storage = @@ -1047,7 +1095,7 @@ static int __init omap3_pm_init(void) local_fiq_disable(); omap_dma_global_context_save(); - omap3_save_secure_ram_context(PWRDM_POWER_ON); + omap3_save_secure_ram_context(); omap_dma_global_context_restore(); local_irq_enable(); |