diff options
Diffstat (limited to 'arch/arm/mach-mmp/pm-pxa910.c')
| -rw-r--r-- | arch/arm/mach-mmp/pm-pxa910.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/arch/arm/mach-mmp/pm-pxa910.c b/arch/arm/mach-mmp/pm-pxa910.c deleted file mode 100644 index f6ba6db0aa36..000000000000 --- a/arch/arm/mach-mmp/pm-pxa910.c +++ /dev/null @@ -1,166 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * PXA910 Power Management Routines - * - * (C) Copyright 2009 Marvell International Ltd. - * All Rights Reserved - */ - -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/err.h> -#include <linux/time.h> -#include <linux/delay.h> -#include <linux/suspend.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/irq.h> -#include <asm/mach-types.h> -#include <asm/outercache.h> - -#include <linux/soc/mmp/cputype.h> -#include "addr-map.h" -#include "pm-pxa910.h" -#include "regs-icu.h" - -void pxa910_pm_enter_lowpower_mode(int state) -{ - uint32_t idle_cfg, apcr; - - idle_cfg = __raw_readl(APMU_MOH_IDLE_CFG); - apcr = __raw_readl(MPMU_APCR); - - apcr &= ~(MPMU_APCR_DDRCORSD | MPMU_APCR_APBSD | MPMU_APCR_AXISD - | MPMU_APCR_VCTCXOSD | MPMU_APCR_STBYEN); - idle_cfg &= ~(APMU_MOH_IDLE_CFG_MOH_IDLE - | APMU_MOH_IDLE_CFG_MOH_PWRDWN); - - switch (state) { - case POWER_MODE_UDR: - /* only shutdown APB in UDR */ - apcr |= MPMU_APCR_STBYEN | MPMU_APCR_APBSD; - fallthrough; - case POWER_MODE_SYS_SLEEP: - apcr |= MPMU_APCR_SLPEN; /* set the SLPEN bit */ - apcr |= MPMU_APCR_VCTCXOSD; /* set VCTCXOSD */ - fallthrough; - case POWER_MODE_APPS_SLEEP: - apcr |= MPMU_APCR_DDRCORSD; /* set DDRCORSD */ - fallthrough; - case POWER_MODE_APPS_IDLE: - apcr |= MPMU_APCR_AXISD; /* set AXISDD bit */ - fallthrough; - case POWER_MODE_CORE_EXTIDLE: - idle_cfg |= APMU_MOH_IDLE_CFG_MOH_IDLE; - idle_cfg |= APMU_MOH_IDLE_CFG_MOH_PWRDWN; - idle_cfg |= APMU_MOH_IDLE_CFG_MOH_PWR_SW(3) - | APMU_MOH_IDLE_CFG_MOH_L2_PWR_SW(3); - fallthrough; - case POWER_MODE_CORE_INTIDLE: - break; - } - - /* program the memory controller hardware sleep type and auto wakeup */ - idle_cfg |= APMU_MOH_IDLE_CFG_MOH_DIS_MC_SW_REQ; - idle_cfg |= APMU_MOH_IDLE_CFG_MOH_MC_WAKE_EN; - __raw_writel(0x0, APMU_MC_HW_SLP_TYPE); /* auto refresh */ - - /* set DSPSD, DTCMSD, BBSD, MSASLPEN */ - apcr |= MPMU_APCR_DSPSD | MPMU_APCR_DTCMSD | MPMU_APCR_BBSD - | MPMU_APCR_MSASLPEN; - - /*always set SLEPEN bit mainly for MSA*/ - apcr |= MPMU_APCR_SLPEN; - - /* finally write the registers back */ - __raw_writel(idle_cfg, APMU_MOH_IDLE_CFG); - __raw_writel(apcr, MPMU_APCR); - -} - -static int pxa910_pm_enter(suspend_state_t state) -{ - unsigned int idle_cfg, reg = 0; - - /*pmic thread not completed,exit;otherwise system can't be waked up*/ - reg = __raw_readl(ICU_INT_CONF(IRQ_PXA910_PMIC_INT)); - if ((reg & 0x3) == 0) - return -EAGAIN; - - idle_cfg = __raw_readl(APMU_MOH_IDLE_CFG); - idle_cfg |= APMU_MOH_IDLE_CFG_MOH_PWRDWN - | APMU_MOH_IDLE_CFG_MOH_SRAM_PWRDWN; - __raw_writel(idle_cfg, APMU_MOH_IDLE_CFG); - - /* disable L2 */ - outer_disable(); - /* wait for l2 idle */ - while (!(readl(CIU_REG(0x8)) & (1 << 16))) - udelay(1); - - cpu_do_idle(); - - /* enable L2 */ - outer_resume(); - /* wait for l2 idle */ - while (!(readl(CIU_REG(0x8)) & (1 << 16))) - udelay(1); - - idle_cfg = __raw_readl(APMU_MOH_IDLE_CFG); - idle_cfg &= ~(APMU_MOH_IDLE_CFG_MOH_PWRDWN - | APMU_MOH_IDLE_CFG_MOH_SRAM_PWRDWN); - __raw_writel(idle_cfg, APMU_MOH_IDLE_CFG); - - return 0; -} - -/* - * Called after processes are frozen, but before we shut down devices. - */ -static int pxa910_pm_prepare(void) -{ - pxa910_pm_enter_lowpower_mode(POWER_MODE_UDR); - return 0; -} - -/* - * Called after devices are re-setup, but before processes are thawed. - */ -static void pxa910_pm_finish(void) -{ - pxa910_pm_enter_lowpower_mode(POWER_MODE_CORE_INTIDLE); -} - -static int pxa910_pm_valid(suspend_state_t state) -{ - return ((state == PM_SUSPEND_STANDBY) || (state == PM_SUSPEND_MEM)); -} - -static const struct platform_suspend_ops pxa910_pm_ops = { - .valid = pxa910_pm_valid, - .prepare = pxa910_pm_prepare, - .enter = pxa910_pm_enter, - .finish = pxa910_pm_finish, -}; - -static int __init pxa910_pm_init(void) -{ - uint32_t awucrm = 0; - - if (!cpu_is_pxa910()) - return -EIO; - - suspend_set_ops(&pxa910_pm_ops); - - /* Set the following bits for MMP3 playback with VCTXO on */ - __raw_writel(__raw_readl(APMU_SQU_CLK_GATE_CTRL) | (1 << 30), - APMU_SQU_CLK_GATE_CTRL); - __raw_writel(__raw_readl(MPMU_FCCR) | (1 << 28), MPMU_FCCR); - - awucrm |= MPMU_AWUCRM_AP_ASYNC_INT | MPMU_AWUCRM_AP_FULL_IDLE; - __raw_writel(awucrm, MPMU_AWUCRM); - - return 0; -} - -late_initcall(pxa910_pm_init); |