Initial import

1 files changed, 273 insertions, 0 deletions

diff --git a/arch/arm/mach-mmp/pm-pxa910.c b/arch/arm/mach-mmp/pm-pxa910.c
new file mode 100644
index 000000000..04c9daf9f
--- /dev/null
+++ b/arch/arm/mach-mmp/pm-pxa910.c
@@ -0,0 +1,273 @@
+/*
+ * PXA910 Power Management Routines
+ *
+ * This software program is licensed subject to the GNU General Public License
+ * (GPL).Version 2,June 1991, available at http://www.fsf.org/copyleft/gpl.html
+ *
+ * (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 <mach/hardware.h>
+#include <mach/cputype.h>
+#include <mach/addr-map.h>
+#include <mach/pm-pxa910.h>
+#include <mach/regs-icu.h>
+#include <mach/irqs.h>
+
+int pxa910_set_wake(struct irq_data *data, unsigned int on)
+{
+	uint32_t awucrm = 0, apcr = 0;
+	int irq = data->irq;
+
+	/* setting wakeup sources */
+	switch (irq) {
+	/* wakeup line 2 */
+	case IRQ_PXA910_AP_GPIO:
+		awucrm = MPMU_AWUCRM_WAKEUP(2);
+		apcr |= MPMU_APCR_SLPWP2;
+		break;
+	/* wakeup line 3 */
+	case IRQ_PXA910_KEYPAD:
+		awucrm = MPMU_AWUCRM_WAKEUP(3) | MPMU_AWUCRM_KEYPRESS;
+		apcr |= MPMU_APCR_SLPWP3;
+		break;
+	case IRQ_PXA910_ROTARY:
+		awucrm = MPMU_AWUCRM_WAKEUP(3) | MPMU_AWUCRM_NEWROTARY;
+		apcr |= MPMU_APCR_SLPWP3;
+		break;
+	case IRQ_PXA910_TRACKBALL:
+		awucrm = MPMU_AWUCRM_WAKEUP(3) | MPMU_AWUCRM_TRACKBALL;
+		apcr |= MPMU_APCR_SLPWP3;
+		break;
+	/* wakeup line 4 */
+	case IRQ_PXA910_AP1_TIMER1:
+		awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_AP1_TIMER_1;
+		apcr |= MPMU_APCR_SLPWP4;
+		break;
+	case IRQ_PXA910_AP1_TIMER2:
+		awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_AP1_TIMER_2;
+		apcr |= MPMU_APCR_SLPWP4;
+		break;
+	case IRQ_PXA910_AP1_TIMER3:
+		awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_AP1_TIMER_3;
+		apcr |= MPMU_APCR_SLPWP4;
+		break;
+	case IRQ_PXA910_AP2_TIMER1:
+		awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_AP2_TIMER_1;
+		apcr |= MPMU_APCR_SLPWP4;
+		break;
+	case IRQ_PXA910_AP2_TIMER2:
+		awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_AP2_TIMER_2;
+		apcr |= MPMU_APCR_SLPWP4;
+		break;
+	case IRQ_PXA910_AP2_TIMER3:
+		awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_AP2_TIMER_3;
+		apcr |= MPMU_APCR_SLPWP4;
+		break;
+	case IRQ_PXA910_RTC_ALARM:
+		awucrm = MPMU_AWUCRM_WAKEUP(4) | MPMU_AWUCRM_RTC_ALARM;
+		apcr |= MPMU_APCR_SLPWP4;
+		break;
+	/* wakeup line 5 */
+	case IRQ_PXA910_USB1:
+	case IRQ_PXA910_USB2:
+		awucrm = MPMU_AWUCRM_WAKEUP(5);
+		apcr |= MPMU_APCR_SLPWP5;
+		break;
+	/* wakeup line 6 */
+	case IRQ_PXA910_MMC:
+		awucrm = MPMU_AWUCRM_WAKEUP(6)
+			| MPMU_AWUCRM_SDH1
+			| MPMU_AWUCRM_SDH2;
+		apcr |= MPMU_APCR_SLPWP6;
+		break;
+	/* wakeup line 7 */
+	case IRQ_PXA910_PMIC_INT:
+		awucrm = MPMU_AWUCRM_WAKEUP(7);
+		apcr |= MPMU_APCR_SLPWP7;
+		break;
+	default:
+		if (irq >= IRQ_GPIO_START && irq < IRQ_BOARD_START) {
+			awucrm = MPMU_AWUCRM_WAKEUP(2);
+			apcr |= MPMU_APCR_SLPWP2;
+		} else {
+			/* FIXME: This should return a proper error code ! */
+			printk(KERN_ERR "Error: no defined wake up source irq: %d\n",
+				irq);
+		}
+	}
+
+	if (on) {
+		if (awucrm) {
+			awucrm |= __raw_readl(MPMU_AWUCRM);
+			__raw_writel(awucrm, MPMU_AWUCRM);
+		}
+		if (apcr) {
+			apcr = ~apcr & __raw_readl(MPMU_APCR);
+			__raw_writel(apcr, MPMU_APCR);
+		}
+	} else {
+		if (awucrm) {
+			awucrm = ~awucrm & __raw_readl(MPMU_AWUCRM);
+			__raw_writel(awucrm, MPMU_AWUCRM);
+		}
+		if (apcr) {
+			apcr |= __raw_readl(MPMU_APCR);
+			__raw_writel(apcr, MPMU_APCR);
+		}
+	}
+	return 0;
+}
+
+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;
+		/* fall through */
+	case POWER_MODE_SYS_SLEEP:
+		apcr |= MPMU_APCR_SLPEN;		/* set the SLPEN bit */
+		apcr |= MPMU_APCR_VCTCXOSD;		/* set VCTCXOSD */
+		/* fall through */
+	case POWER_MODE_APPS_SLEEP:
+		apcr |= MPMU_APCR_DDRCORSD;		/* set DDRCORSD */
+		/* fall through */
+	case POWER_MODE_APPS_IDLE:
+		apcr |= MPMU_APCR_AXISD;		/* set AXISDD bit */
+		/* fall through */
+	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);
+		/* fall through */
+	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);