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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/arch/arm/mach-omap2/pm34xx.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-omap2/pm34xx.c')
-rw-r--r--ANDROID_3.4.5/arch/arm/mach-omap2/pm34xx.c812
1 files changed, 0 insertions, 812 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-omap2/pm34xx.c b/ANDROID_3.4.5/arch/arm/mach-omap2/pm34xx.c
deleted file mode 100644
index 703bd109..00000000
--- a/ANDROID_3.4.5/arch/arm/mach-omap2/pm34xx.c
+++ /dev/null
@@ -1,812 +0,0 @@
-/*
- * OMAP3 Power Management Routines
- *
- * Copyright (C) 2006-2008 Nokia Corporation
- * 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>
- *
- * Based on pm.c for omap1
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/pm.h>
-#include <linux/suspend.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/list.h>
-#include <linux/err.h>
-#include <linux/gpio.h>
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <trace/events/power.h>
-
-#include <asm/suspend.h>
-#include <asm/system_misc.h>
-
-#include <plat/sram.h>
-#include "clockdomain.h"
-#include "powerdomain.h"
-#include <plat/sdrc.h>
-#include <plat/prcm.h>
-#include <plat/gpmc.h>
-#include <plat/dma.h>
-
-#include "common.h"
-#include "cm2xxx_3xxx.h"
-#include "cm-regbits-34xx.h"
-#include "prm-regbits-34xx.h"
-
-#include "prm2xxx_3xxx.h"
-#include "pm.h"
-#include "sdrc.h"
-#include "control.h"
-
-/* pm34xx errata defined in pm.h */
-u16 pm34xx_errata;
-
-struct power_state {
- struct powerdomain *pwrdm;
- u32 next_state;
-#ifdef CONFIG_SUSPEND
- u32 saved_state;
-#endif
- struct list_head node;
-};
-
-static LIST_HEAD(pwrst_list);
-
-static int (*_omap_save_secure_sram)(u32 *addr);
-void (*omap3_do_wfi_sram)(void);
-
-static struct powerdomain *mpu_pwrdm, *neon_pwrdm;
-static struct powerdomain *core_pwrdm, *per_pwrdm;
-static struct powerdomain *cam_pwrdm;
-
-static void omap3_enable_io_chain(void)
-{
- int timeout = 0;
-
- omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_CHAIN_MASK, WKUP_MOD,
- PM_WKEN);
- /* Do a readback to assure write has been done */
- omap2_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) {
- pr_err("Wake up daisy chain activation failed.\n");
- return;
- }
- omap2_prm_set_mod_reg_bits(OMAP3430_ST_IO_CHAIN_MASK,
- WKUP_MOD, PM_WKEN);
- }
-}
-
-static void omap3_disable_io_chain(void)
-{
- omap2_prm_clear_mod_reg_bits(OMAP3430_EN_IO_CHAIN_MASK, WKUP_MOD,
- PM_WKEN);
-}
-
-static void omap3_core_save_context(void)
-{
- omap3_ctrl_save_padconf();
-
- /*
- * 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();
-}
-
-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 *)
- __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)
- ;
- }
- }
-}
-
-/*
- * 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 = 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) {
- c += prcm_clear_mod_irqs(CORE_MOD, 3, 0);
- c += prcm_clear_mod_irqs(OMAP3430ES2_USBHOST_MOD, 1, 0);
- }
-
- return c ? IRQ_HANDLED : IRQ_NONE;
-}
-
-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;
-
- /* 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;
-}
-
-void omap_sram_idle(void)
-{
- /* Variable to tell what needs to be saved and restored
- * in omap_sram_idle*/
- /* save_state = 0 => Nothing to save and restored */
- /* 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;
- 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;
-
- 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 */
- pr_err("Invalid mpu state in sram_idle\n");
- return;
- }
-
- /* NEON control */
- if (pwrdm_read_pwrst(neon_pwrdm) == PWRDM_POWER_ON)
- pwrdm_set_next_pwrst(neon_pwrdm, mpu_next_state);
-
- /* 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);
- if (omap3_has_io_wakeup() &&
- (per_next_state < PWRDM_POWER_ON ||
- core_next_state < PWRDM_POWER_ON)) {
- omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, PM_WKEN);
- if (omap3_has_io_chain_ctrl())
- omap3_enable_io_chain();
- }
-
- pwrdm_pre_transition();
-
- /* 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);
- }
-
- /* CORE */
- if (core_next_state < PWRDM_POWER_ON) {
- if (core_next_state == PWRDM_POWER_OFF) {
- omap3_core_save_context();
- omap3_cm_save_context();
- }
- }
-
- omap3_intc_prepare_idle();
-
- /*
- * 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);
-
- /*
- * 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);
-
- /* 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);
-
- /* 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();
- }
- if (core_next_state == PWRDM_POWER_OFF)
- omap2_prm_clear_mod_reg_bits(OMAP3430_AUTO_OFF_MASK,
- OMAP3430_GR_MOD,
- OMAP3_PRM_VOLTCTRL_OFFSET);
- }
- omap3_intc_resume_idle();
-
- pwrdm_post_transition();
-
- /* PER */
- if (per_next_state < PWRDM_POWER_ON) {
- per_prev_state = pwrdm_read_prev_pwrst(per_pwrdm);
- omap2_gpio_resume_after_idle();
- }
-
- /* Disable IO-PAD and IO-CHAIN wakeup */
- if (omap3_has_io_wakeup() &&
- (per_next_state < PWRDM_POWER_ON ||
- core_next_state < PWRDM_POWER_ON)) {
- omap2_prm_clear_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD,
- PM_WKEN);
- if (omap3_has_io_chain_ctrl())
- omap3_disable_io_chain();
- }
-
- clkdm_allow_idle(mpu_pwrdm->pwrdm_clkdms[0]);
-}
-
-static void omap3_pm_idle(void)
-{
- local_fiq_disable();
-
- if (omap_irq_pending())
- goto out;
-
- trace_power_start(POWER_CSTATE, 1, smp_processor_id());
- trace_cpu_idle(1, smp_processor_id());
-
- omap_sram_idle();
-
- trace_power_end(smp_processor_id());
- trace_cpu_idle(PWR_EVENT_EXIT, smp_processor_id());
-
-out:
- local_fiq_enable();
-}
-
-#ifdef CONFIG_SUSPEND
-static int omap3_pm_suspend(void)
-{
- struct power_state *pwrst;
- int state, ret = 0;
-
- /* Read current next_pwrsts */
- list_for_each_entry(pwrst, &pwrst_list, node)
- pwrst->saved_state = pwrdm_read_next_pwrst(pwrst->pwrdm);
- /* Set ones wanted by suspend */
- list_for_each_entry(pwrst, &pwrst_list, node) {
- if (omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state))
- goto restore;
- if (pwrdm_clear_all_prev_pwrst(pwrst->pwrdm))
- goto restore;
- }
-
- omap3_intc_suspend();
-
- omap_sram_idle();
-
-restore:
- /* Restore next_pwrsts */
- list_for_each_entry(pwrst, &pwrst_list, node) {
- state = pwrdm_read_prev_pwrst(pwrst->pwrdm);
- if (state > pwrst->next_state) {
- pr_info("Powerdomain (%s) didn't enter "
- "target state %d\n",
- pwrst->pwrdm->name, pwrst->next_state);
- ret = -1;
- }
- omap_set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state);
- }
- if (ret)
- pr_err("Could not enter target state in pm_suspend\n");
- else
- pr_info("Successfully put all powerdomains to target state\n");
-
- return ret;
-}
-
-#endif /* CONFIG_SUSPEND */
-
-
-/**
- * omap3_iva_idle(): ensure IVA is in idle so it can be put into
- * retention
- *
- * In cases where IVA2 is activated by bootcode, it may prevent
- * full-chip retention or off-mode because it is not idle. This
- * function forces the IVA2 into idle state so it can go
- * into retention/off and thus allow full-chip retention/off.
- *
- **/
-static void __init omap3_iva_idle(void)
-{
- /* ensure IVA2 clock is disabled */
- omap2_cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN);
-
- /* if no clock activity, nothing else to do */
- if (!(omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKSTST) &
- OMAP3430_CLKACTIVITY_IVA2_MASK))
- return;
-
- /* Reset IVA2 */
- 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 */
- 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);
-
- /* Un-reset IVA2 */
- omap2_prm_write_mod_reg(0, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
-
- /* Disable IVA2 clock */
- omap2_cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN);
-
- /* Reset IVA2 */
- 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)
-{
- u16 mask, padconf;
-
- /* In a stand alone OMAP3430 where there is not a stacked
- * modem for the D2D Idle Ack and D2D MStandby must be pulled
- * high. S CONTROL_PADCONF_SAD2D_IDLEACK and
- * CONTROL_PADCONF_SAD2D_MSTDBY to have a pull up. */
- mask = (1 << 4) | (1 << 3); /* pull-up, enabled */
- padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_MSTANDBY);
- padconf |= mask;
- omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_MSTANDBY);
-
- padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_IDLEACK);
- padconf |= mask;
- omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_IDLEACK);
-
- /* reset modem */
- 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)
-{
- 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;
-
- /* 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.
- */
- omap2_prm_rmw_mod_reg_bits(OMAP_AUTOEXTCLKMODE_MASK,
- 1 << OMAP_AUTOEXTCLKMODE_SHIFT,
- OMAP3430_GR_MOD,
- OMAP3_PRM_CLKSRC_CTRL_OFFSET);
-
- /* setup wakup source */
- 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 */
- omap2_prm_write_mod_reg(OMAP3430_GRPSEL_GPIO1_MASK |
- OMAP3430_GRPSEL_GPT1_MASK |
- OMAP3430_GRPSEL_GPT12_MASK,
- WKUP_MOD, OMAP3430_PM_MPUGRPSEL);
-
- /* 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 */
- 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 */
- 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 */
- omap2_prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
-
- 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;
-
- list_for_each_entry(pwrst, &pwrst_list, node) {
- if (pwrst->pwrdm == pwrdm)
- return pwrst->next_state;
- }
- return -EINVAL;
-}
-
-int omap3_pm_set_suspend_state(struct powerdomain *pwrdm, int state)
-{
- struct power_state *pwrst;
-
- list_for_each_entry(pwrst, &pwrst_list, node) {
- if (pwrst->pwrdm == pwrdm) {
- pwrst->next_state = state;
- return 0;
- }
- }
- return -EINVAL;
-}
-
-static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
-{
- struct power_state *pwrst;
-
- if (!pwrdm->pwrsts)
- return 0;
-
- pwrst = kmalloc(sizeof(struct power_state), GFP_ATOMIC);
- if (!pwrst)
- return -ENOMEM;
- pwrst->pwrdm = pwrdm;
- pwrst->next_state = PWRDM_POWER_RET;
- list_add(&pwrst->node, &pwrst_list);
-
- if (pwrdm_has_hdwr_sar(pwrdm))
- pwrdm_enable_hdwr_sar(pwrdm);
-
- return omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state);
-}
-
-/*
- * 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.
- */
-void omap_push_sram_idle(void)
-{
- 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;
- }
-}
-
-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())
- return -ENODEV;
-
- if (!omap3_has_io_chain_ctrl())
- pr_warning("PM: no software I/O chain control; some wakeups may be lost\n");
-
- pm_errata_configure();
-
- /* XXX prcm_setup_regs needs to be before enabling hw
- * supervised mode for powerdomains */
- prcm_setup_regs();
-
- ret = request_irq(omap_prcm_event_to_irq("wkup"),
- _prcm_int_handle_wakeup, IRQF_NO_SUSPEND, "pm_wkup", NULL);
-
- if (ret) {
- pr_err("pm: Failed to request pm_wkup irq\n");
- goto err1;
- }
-
- /* 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);
-
- if (ret) {
- pr_err("pm: Failed to request pm_io irq\n");
- goto err2;
- }
-
- 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) {
- pr_err("Failed to get mpu_pwrdm\n");
- ret = -EINVAL;
- goto err3;
- }
-
- neon_pwrdm = pwrdm_lookup("neon_pwrdm");
- per_pwrdm = pwrdm_lookup("per_pwrdm");
- 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");
-
-#ifdef CONFIG_SUSPEND
- omap_pm_suspend = omap3_pm_suspend;
-#endif
-
- 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();
-
- 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();
- local_fiq_disable();
-
- omap_dma_global_context_save();
- omap3_save_secure_ram_context();
- omap_dma_global_context_restore();
-
- local_irq_enable();
- local_fiq_enable();
- }
-
- omap3_save_scratchpad_contents();
- return ret;
-
-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);