/*
* linux/arch/arm/mach-omap2/pm.c
*
- * OMAP2 Power Management Routines
+ * OMAP Power Management Common Routines
*
* Copyright (C) 2005 Texas Instruments, Inc.
* Copyright (C) 2006-2008 Nokia Corporation
* Juha Yrjola
* Amit Kucheria <amit.kucheria@nokia.com>
* Igor Stoppa <igor.stoppa@nokia.com>
+ * Jouni Hogander
*
* Based on pm.c for omap1
*
*/
#include <linux/suspend.h>
-#include <linux/sched.h>
-#include <linux/proc_fs.h>
-#include <linux/interrupt.h>
-#include <linux/sysfs.h>
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/irq.h>
+#include <linux/time.h>
-#include <asm/atomic.h>
+#include <mach/cpu.h>
#include <asm/mach/time.h>
-#include <asm/mach/irq.h>
-#include <asm/mach-types.h>
-
-#include <asm/arch/irqs.h>
-#include <asm/arch/clock.h>
-#include <asm/arch/sram.h>
-#include <asm/arch/control.h>
-#include <asm/arch/gpio.h>
-#include <asm/arch/pm.h>
-#include <asm/arch/mux.h>
-#include <asm/arch/dma.h>
-#include <asm/arch/board.h>
-
-#include "prm.h"
-#include "prm-regbits-24xx.h"
-#include "cm.h"
-#include "cm-regbits-24xx.h"
-#include "sdrc.h"
-
-/* These addrs are in assembly language code to be patched at runtime */
-extern void *omap2_ocs_sdrc_power;
-extern void *omap2_ocs_sdrc_dlla_ctrl;
-
-static void (*omap2_sram_idle)(void);
-static void (*omap2_sram_suspend)(void __iomem *dllctrl);
-static void (*saved_idle)(void);
-
-static u32 omap2_read_32k_sync_counter(void)
-{
- return omap_readl(OMAP2_32KSYNCT_BASE + 0x0010);
-}
-
-#ifdef CONFIG_PM_DEBUG
-int omap2_pm_debug = 0;
-
-static int serial_console_clock_disabled;
-static int serial_console_uart;
-static unsigned int serial_console_next_disable;
-
-static struct clk *console_iclk, *console_fclk;
-
-static void serial_console_kick(void)
-{
- serial_console_next_disable = omap2_read_32k_sync_counter();
- /* Keep the clocks on for 4 secs */
- serial_console_next_disable += 4 * 32768;
-}
-
-static void serial_wait_tx(void)
-{
- static const unsigned long uart_bases[3] = {
- 0x4806a000, 0x4806c000, 0x4806e000
- };
- unsigned long lsr_reg;
- int looped = 0;
-
- /* Wait for TX FIFO and THR to get empty */
- lsr_reg = IO_ADDRESS(uart_bases[serial_console_uart - 1] + (5 << 2));
- while ((__raw_readb(lsr_reg) & 0x60) != 0x60)
- looped = 1;
- if (looped)
- serial_console_kick();
-}
-
-static void serial_console_fclk_mask(u32 *f1, u32 *f2)
-{
- switch (serial_console_uart) {
- case 1:
- *f1 &= ~(1 << 21);
- break;
- case 2:
- *f1 &= ~(1 << 22);
- break;
- case 3:
- *f2 &= ~(1 << 2);
- break;
- }
-}
-
-static void serial_console_sleep(int enable)
-{
- if (console_iclk == NULL || console_fclk == NULL)
- return;
-
- if (enable) {
- BUG_ON(serial_console_clock_disabled);
- if (clk_get_usecount(console_fclk) == 0)
- return;
- if ((int) serial_console_next_disable -
- (int) omap2_read_32k_sync_counter() >= 0)
- return;
- serial_wait_tx();
- clk_disable(console_iclk);
- clk_disable(console_fclk);
- serial_console_clock_disabled = 1;
- } else {
- int serial_wakeup = 0;
- u32 l;
-
- switch (serial_console_uart) {
- case 1:
- l = prm_read_mod_reg(CORE_MOD, PM_WKST1);
- if (l & OMAP24XX_ST_UART1)
- serial_wakeup = 1;
- break;
- case 2:
- l = prm_read_mod_reg(CORE_MOD, PM_WKST1);
- if (l & OMAP24XX_ST_UART2)
- serial_wakeup = 1;
- break;
- case 3:
- l = prm_read_mod_reg(CORE_MOD, OMAP24XX_PM_WKST2);
- if (l & OMAP24XX_ST_UART3)
- serial_wakeup = 1;
- break;
- }
- if (serial_wakeup)
- serial_console_kick();
- if (!serial_console_clock_disabled)
- return;
- clk_enable(console_iclk);
- clk_enable(console_fclk);
- serial_console_clock_disabled = 0;
- }
-}
-
-static void pm_init_serial_console(void)
-{
- const struct omap_serial_console_config *conf;
- char name[16];
-
- conf = omap_get_config(OMAP_TAG_SERIAL_CONSOLE,
- struct omap_serial_console_config);
- if (conf == NULL)
- return;
- if (conf->console_uart > 3 || conf->console_uart < 1)
- return;
- serial_console_uart = conf->console_uart;
- sprintf(name, "uart%d_fck", conf->console_uart);
- console_fclk = clk_get(NULL, name);
- if (IS_ERR(console_fclk))
- console_fclk = NULL;
- name[6] = 'i';
- console_iclk = clk_get(NULL, name);
- if (IS_ERR(console_fclk))
- console_iclk = NULL;
- if (console_fclk == NULL || console_iclk == NULL) {
- serial_console_uart = 0;
- return;
- }
- switch (serial_console_uart) {
- case 1:
- prm_set_mod_reg_bits(OMAP24XX_ST_UART1, CORE_MOD, PM_WKEN1);
- break;
- case 2:
- prm_set_mod_reg_bits(OMAP24XX_ST_UART2, CORE_MOD, PM_WKEN1);
- break;
- case 3:
- prm_set_mod_reg_bits(OMAP24XX_ST_UART3, CORE_MOD,
- OMAP24XX_PM_WKEN2);
- break;
- }
-}
-
-#define DUMP_PRM_MOD_REG(mod, reg) \
- regs[reg_count].name = #mod "." #reg; \
- regs[reg_count++].val = prm_read_mod_reg(mod, reg)
-#define DUMP_CM_MOD_REG(mod, reg) \
- regs[reg_count].name = #mod "." #reg; \
- regs[reg_count++].val = cm_read_mod_reg(mod, reg)
-#define DUMP_PRM_REG(reg) \
- regs[reg_count].name = #reg; \
- regs[reg_count++].val = __raw_readl(reg)
-#define DUMP_CM_REG(reg) \
- regs[reg_count].name = #reg; \
- regs[reg_count++].val = __raw_readl(reg)
-#define DUMP_INTC_REG(reg, off) \
- regs[reg_count].name = #reg; \
- regs[reg_count++].val = __raw_readl(IO_ADDRESS(0x480fe000 + (off)))
-
-static void omap2_pm_dump(int mode, int resume, unsigned int us)
-{
- struct reg {
- const char *name;
- u32 val;
- } regs[32];
- int reg_count = 0, i;
- const char *s1 = NULL, *s2 = NULL;
-
- if (!resume) {
-#if 0
- /* MPU */
- DUMP_PRM_REG(OMAP24XX_PRCM_IRQENABLE_MPU);
- DUMP_CM_MOD_REG(MPU_MOD, CM_CLKSTCTRL);
- DUMP_PRM_MOD_REG(MPU_MOD, PM_PWSTCTRL);
- DUMP_PRM_MOD_REG(MPU_MOD, PM_PWSTST);
- DUMP_PRM_MOD_REG(MPU_MOD, PM_WKDEP);
-#endif
-#if 0
- /* INTC */
- DUMP_INTC_REG(INTC_MIR0, 0x0084);
- DUMP_INTC_REG(INTC_MIR1, 0x00a4);
- DUMP_INTC_REG(INTC_MIR2, 0x00c4);
-#endif
-#if 0
- DUMP_CM_MOD_REG(CORE_MOD, CM_FCLKEN1);
- DUMP_CM_MOD_REG(CORE_MOD, OMAP24XX_CM_FCLKEN2);
- DUMP_CM_MOD_REG(WKUP_MOD, CM_FCLKEN);
- DUMP_CM_MOD_REG(CORE_MOD, CM_ICLKEN1);
- DUMP_CM_MOD_REG(CORE_MOD, CM_ICLKEN2);
- DUMP_CM_MOD_REG(WKUP_MOD, CM_ICLKEN);
- DUMP_CM_MOD_REG(PLL_MOD, CM_CLKEN);
- DUMP_PRM_REG(OMAP24XX_PRCM_CLKEMUL_CTRL);
- DUMP_CM_MOD_REG(PLL_MOD, CM_AUTOIDLE);
- DUMP_PRM_MOD_REG(CORE_MOD, PM_PWSTST);
- DUMP_PRM_REG(OMAP24XX_PRCM_CLKSRC_CTRL);
-#endif
-#if 0
- /* DSP */
- DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_FCLKEN);
- DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_ICLKEN);
- DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_IDLEST);
- DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_AUTOIDLE);
- DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_CLKSEL);
- DUMP_CM_MOD_REG(OMAP24XX_DSP_MOD, CM_CLKSTCTRL);
- DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, RM_RSTCTRL);
- DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, RM_RSTST);
- DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, PM_PWSTCTRL);
- DUMP_PRM_MOD_REG(OMAP24XX_DSP_MOD, PM_PWSTST);
-#endif
- } else {
- DUMP_PRM_MOD_REG(CORE_MOD, PM_WKST1);
- DUMP_PRM_MOD_REG(CORE_MOD, OMAP24XX_PM_WKST2);
- DUMP_PRM_MOD_REG(WKUP_MOD, PM_WKST);
- DUMP_PRM_REG(OMAP24XX_PRCM_IRQSTATUS_MPU);
-#if 1
- DUMP_INTC_REG(INTC_PENDING_IRQ0, 0x0098);
- DUMP_INTC_REG(INTC_PENDING_IRQ1, 0x00b8);
- DUMP_INTC_REG(INTC_PENDING_IRQ2, 0x00d8);
-#endif
- }
-
- switch (mode) {
- case 0:
- s1 = "full";
- s2 = "retention";
- break;
- case 1:
- s1 = "MPU";
- s2 = "retention";
- break;
- case 2:
- s1 = "MPU";
- s2 = "idle";
- break;
- }
-
- if (!resume)
-#if defined(CONFIG_NO_IDLE_HZ) || defined(CONFIG_NO_HZ)
- pr_debug("--- Going to %s %s (next timer after %u ms)\n", s1,
- s2,
- jiffies_to_msecs(get_next_timer_interrupt(jiffies) -
- jiffies));
-#else
- pr_debug("--- Going to %s %s\n", s1, s2);
-#endif
- else
- pr_debug("--- Woke up (slept for %u.%03u ms)\n", us / 1000,
- us % 1000);
+#include <asm/atomic.h>
- for (i = 0; i < reg_count; i++)
- pr_debug("%-20s: 0x%08x\n", regs[i].name, regs[i].val);
-}
+#include <mach/pm.h>
+#include "pm.h"
-#else
-static inline void serial_console_sleep(int enable) {}
-static inline void pm_init_serial_console(void) {}
-static inline void omap2_pm_dump(int mode, int resume, unsigned int us) {}
-static inline void serial_console_fclk_mask(u32 *f1, u32 *f2) {}
+unsigned short enable_dyn_sleep;
+unsigned short clocks_off_while_idle;
+atomic_t sleep_block = ATOMIC_INIT(0);
-#define omap2_pm_debug 0
+static ssize_t idle_show(struct kobject *, struct kobj_attribute *, char *);
+static ssize_t idle_store(struct kobject *k, struct kobj_attribute *,
+ const char *buf, size_t n);
-#endif
+static struct kobj_attribute sleep_while_idle_attr =
+ __ATTR(sleep_while_idle, 0644, idle_show, idle_store);
-static unsigned short enable_dyn_sleep = 0; /* disabled till drivers are fixed */
+static struct kobj_attribute clocks_off_while_idle_attr =
+ __ATTR(clocks_off_while_idle, 0644, idle_show, idle_store);
static ssize_t idle_show(struct kobject *kobj, struct kobj_attribute *attr,
char *buf)
{
- return sprintf(buf, "%hu\n", enable_dyn_sleep);
+ if (attr == &sleep_while_idle_attr)
+ return sprintf(buf, "%hu\n", enable_dyn_sleep);
+ else if (attr == &clocks_off_while_idle_attr)
+ return sprintf(buf, "%hu\n", clocks_off_while_idle);
+ else
+ return -EINVAL;
}
static ssize_t idle_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t n)
{
unsigned short value;
+
if (sscanf(buf, "%hu", &value) != 1 ||
(value != 0 && value != 1)) {
- printk(KERN_ERR "idle_sleep_store: Invalid value\n");
+ printk(KERN_ERR "idle_store: Invalid value\n");
return -EINVAL;
}
- enable_dyn_sleep = value;
- return n;
-}
-
-static struct kobj_attribute sleep_while_idle_attr =
- __ATTR(sleep_while_idle, 0644, idle_show, idle_store);
-
-static struct clk *osc_ck, *emul_ck;
-static int omap2_fclks_active(void)
-{
- u32 f1, f2;
-
- f1 = cm_read_mod_reg(CORE_MOD, CM_FCLKEN1);
- f2 = cm_read_mod_reg(CORE_MOD, OMAP24XX_CM_FCLKEN2);
- serial_console_fclk_mask(&f1, &f2);
- if (f1 | f2)
- return 1;
- return 0;
-}
-
-static int omap2_irq_pending(void)
-{
- u32 pending_reg = 0x480fe098;
- int i;
+ if (attr == &sleep_while_idle_attr)
+ enable_dyn_sleep = value;
+ else if (attr == &clocks_off_while_idle_attr)
+ clocks_off_while_idle = value;
+ else
+ return -EINVAL;
- for (i = 0; i < 4; i++) {
- if (omap_readl(pending_reg))
- return 1;
- pending_reg += 0x20;
- }
- return 0;
+ return n;
}
-static atomic_t sleep_block = ATOMIC_INIT(0);
-
void omap2_block_sleep(void)
{
atomic_inc(&sleep_block);
BUG_ON(i < 0);
}
-static void omap2_enter_full_retention(void)
-{
- u32 l, sleep_time = 0;
-
- /* There is 1 reference hold for all children of the oscillator
- * clock, the following will remove it. If no one else uses the
- * oscillator itself it will be disabled if/when we enter retention
- * mode.
- */
- clk_disable(osc_ck);
-
- /* Clear old wake-up events */
- /* REVISIT: These write to reserved bits? */
- prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
- prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);
- prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST);
-
- /* Try to enter retention */
- prm_write_mod_reg((0x01 << OMAP_POWERSTATE_SHIFT) | OMAP_LOGICRETSTATE,
- MPU_MOD, PM_PWSTCTRL);
-
- /* Workaround to kill USB */
- l = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0) | OMAP24XX_USBSTANDBYCTRL;
- omap_ctrl_writel(l, OMAP2_CONTROL_DEVCONF0);
-
- omap2_gpio_prepare_for_retention();
-
- if (omap2_pm_debug) {
- omap2_pm_dump(0, 0, 0);
- sleep_time = omap2_read_32k_sync_counter();
- }
-
- /* One last check for pending IRQs to avoid extra latency due
- * to sleeping unnecessarily. */
- if (omap2_irq_pending())
- goto no_sleep;
-
- serial_console_sleep(1);
- /* Jump to SRAM suspend code */
- omap2_sram_suspend(OMAP_SDRC_REGADDR(SDRC_DLLA_CTRL));
-no_sleep:
- serial_console_sleep(0);
-
- if (omap2_pm_debug) {
- unsigned long long tmp;
- u32 resume_time;
-
- resume_time = omap2_read_32k_sync_counter();
- tmp = resume_time - sleep_time;
- tmp *= 1000000;
- omap2_pm_dump(0, 1, tmp / 32768);
- }
- omap2_gpio_resume_after_retention();
-
- clk_enable(osc_ck);
-
- /* clear CORE wake-up events */
- prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
- prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);
-
- /* wakeup domain events - bit 1: GPT1, bit5 GPIO */
- prm_clear_mod_reg_bits(0x4 | 0x1, WKUP_MOD, PM_WKST);
-
- /* MPU domain wake events */
- l = __raw_readl(OMAP24XX_PRCM_IRQSTATUS_MPU);
- if (l & 0x01)
- __raw_writel(0x01, OMAP24XX_PRCM_IRQSTATUS_MPU);
- if (l & 0x20)
- __raw_writel(0x20, OMAP24XX_PRCM_IRQSTATUS_MPU);
-
- /* Mask future PRCM-to-MPU interrupts */
- __raw_writel(0x0, OMAP24XX_PRCM_IRQSTATUS_MPU);
-}
-
-static int omap2_i2c_active(void)
-{
- u32 l;
-
- l = cm_read_mod_reg(CORE_MOD, CM_FCLKEN1);
- return l & (OMAP2420_EN_I2C2 | OMAP2420_EN_I2C1);
-}
-
-static int sti_console_enabled;
-
-static int omap2_allow_mpu_retention(void)
-{
- u32 l;
-
- if (atomic_read(&sleep_block))
- return 0;
-
- /* Check for MMC, UART2, UART1, McSPI2, McSPI1 and DSS1. */
- l = cm_read_mod_reg(CORE_MOD, CM_FCLKEN1);
- if (l & (OMAP2420_EN_MMC | OMAP24XX_EN_UART2 |
- OMAP24XX_EN_UART1 | OMAP24XX_EN_MCSPI2 |
- OMAP24XX_EN_MCSPI1 | OMAP24XX_EN_DSS1))
- return 0;
- /* Check for UART3. */
- l = cm_read_mod_reg(CORE_MOD, OMAP24XX_CM_FCLKEN2);
- if (l & OMAP24XX_EN_UART3)
- return 0;
- if (sti_console_enabled)
- return 0;
-
- return 1;
-}
-
-static void omap2_enter_mpu_retention(void)
+static int __init omap_pm_init(void)
{
- u32 sleep_time = 0;
- int only_idle = 0;
-
- /* Putting MPU into the WFI state while a transfer is active
- * seems to cause the I2C block to timeout. Why? Good question. */
- if (omap2_i2c_active())
- return;
-
- /* The peripherals seem not to be able to wake up the MPU when
- * it is in retention mode. */
- if (omap2_allow_mpu_retention()) {
- /* REVISIT: These write to reserved bits? */
- prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
- prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);
- prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST);
-
- /* Try to enter MPU retention */
- prm_write_mod_reg((0x01 << OMAP_POWERSTATE_SHIFT) |
- OMAP_LOGICRETSTATE,
- MPU_MOD, PM_PWSTCTRL);
- } else {
- /* Block MPU retention */
+ int error = -1;
- prm_write_mod_reg(OMAP_LOGICRETSTATE, MPU_MOD, PM_PWSTCTRL);
- only_idle = 1;
+ if (cpu_is_omap24xx())
+ error = omap2_pm_init();
+ if (cpu_is_omap34xx())
+ error = omap3_pm_init();
+ if (error) {
+ printk(KERN_ERR "omap2|3_pm_init failed: %d\n", error);
+ return error;
}
- if (omap2_pm_debug) {
- omap2_pm_dump(only_idle ? 2 : 1, 0, 0);
- sleep_time = omap2_read_32k_sync_counter();
- }
-
- omap2_sram_idle();
-
- if (omap2_pm_debug) {
- unsigned long long tmp;
- u32 resume_time;
-
- resume_time = omap2_read_32k_sync_counter();
- tmp = resume_time - sleep_time;
- tmp *= 1000000;
- omap2_pm_dump(only_idle ? 2 : 1, 1, tmp / 32768);
- }
-}
-
-static int omap2_can_sleep(void)
-{
- if (!enable_dyn_sleep)
- return 0;
- if (omap2_fclks_active())
- return 0;
- if (atomic_read(&sleep_block) > 0)
- return 0;
- if (clk_get_usecount(osc_ck) > 1)
- return 0;
- if (omap_dma_running())
- return 0;
-
- return 1;
-}
-
-static void omap2_pm_idle(void)
-{
- local_irq_disable();
- local_fiq_disable();
-
- if (!omap2_can_sleep()) {
- /* timer_dyn_reprogram() takes about 100-200 us to complete.
- * In some contexts (e.g. when waiting for a GPMC-SDRAM DMA
- * transfer to complete), the increased latency is too much.
- *
- * omap2_block_sleep() and omap2_allow_sleep() can be used
- * to indicate this.
- */
- if (atomic_read(&sleep_block) == 0) {
- timer_dyn_reprogram();
- if (omap2_irq_pending())
- goto out;
- }
- omap2_enter_mpu_retention();
- goto out;
- }
-
- /*
- * Since an interrupt may set up a timer, we don't want to
- * reprogram the hardware timer with interrupts enabled.
- * Re-enable interrupts only after returning from idle.
- */
- timer_dyn_reprogram();
-
- if (omap2_irq_pending())
- goto out;
-
- omap2_enter_full_retention();
-
-out:
- local_fiq_enable();
- local_irq_enable();
-}
-
-static int omap2_pm_prepare(void)
-{
- /* We cannot sleep in idle until we have resumed */
- saved_idle = pm_idle;
- pm_idle = NULL;
-
- return 0;
-}
-
-static int omap2_pm_suspend(void)
-{
- u32 wken_wkup, mir1;
-
- wken_wkup = prm_read_mod_reg(WKUP_MOD, PM_WKEN);
- prm_write_mod_reg(wken_wkup & ~OMAP24XX_EN_GPT1, WKUP_MOD, PM_WKEN);
-
- /* Mask GPT1 */
- mir1 = omap_readl(0x480fe0a4);
- omap_writel(1 << 5, 0x480fe0ac);
-
- omap2_enter_full_retention();
-
- omap_writel(mir1, 0x480fe0a4);
- prm_write_mod_reg(wken_wkup, WKUP_MOD, PM_WKEN);
-
- return 0;
-}
-
-static int omap2_pm_enter(suspend_state_t state)
-{
- int ret = 0;
-
- switch (state) {
- case PM_SUSPEND_STANDBY:
- case PM_SUSPEND_MEM:
- ret = omap2_pm_suspend();
- break;
- default:
- ret = -EINVAL;
- }
-
- return ret;
-}
-
-static void omap2_pm_finish(void)
-{
- pm_idle = saved_idle;
-}
-
-static struct platform_suspend_ops omap_pm_ops = {
- .prepare = omap2_pm_prepare,
- .enter = omap2_pm_enter,
- .finish = omap2_pm_finish,
- .valid = suspend_valid_only_mem,
-};
-
-static void __init prcm_setup_regs(void)
-{
- u32 l;
-
- /* Enable autoidle */
- __raw_writel(OMAP24XX_AUTOIDLE, OMAP24XX_PRCM_SYSCONFIG);
-
- /* Set all domain wakeup dependencies */
- prm_write_mod_reg(OMAP_EN_WKUP_MASK, MPU_MOD, PM_WKDEP);
- prm_write_mod_reg(0, OMAP24XX_DSP_MOD, PM_WKDEP);
- prm_write_mod_reg(0, GFX_MOD, PM_WKDEP);
- prm_write_mod_reg(0, CORE_MOD, PM_WKDEP);
- if (cpu_is_omap2430())
- prm_write_mod_reg(0, OMAP2430_MDM_MOD, PM_WKDEP);
-
- l = prm_read_mod_reg(CORE_MOD, PM_PWSTCTRL);
- /* Enable retention for all memory blocks */
- l |= OMAP24XX_MEM3RETSTATE | OMAP24XX_MEM2RETSTATE |
- OMAP24XX_MEM1RETSTATE;
-
- /* Set power state to RETENTION */
- l &= ~OMAP_POWERSTATE_MASK;
- l |= 0x01 << OMAP_POWERSTATE_SHIFT;
- prm_write_mod_reg(l, CORE_MOD, PM_PWSTCTRL);
-
- prm_write_mod_reg((0x01 << OMAP_POWERSTATE_SHIFT) |
- OMAP_LOGICRETSTATE,
- MPU_MOD, PM_PWSTCTRL);
-
- /* Power down DSP and GFX */
- prm_write_mod_reg(OMAP24XX_FORCESTATE | (0x3 << OMAP_POWERSTATE_SHIFT),
- OMAP24XX_DSP_MOD, PM_PWSTCTRL);
- prm_write_mod_reg(OMAP24XX_FORCESTATE | (0x3 << OMAP_POWERSTATE_SHIFT),
- GFX_MOD, PM_PWSTCTRL);
-
- /* Enable clock auto control for all domains */
- cm_write_mod_reg(OMAP24XX_AUTOSTATE_MPU_MASK, MPU_MOD, CM_CLKSTCTRL);
- cm_write_mod_reg(OMAP24XX_AUTOSTATE_DSS_MASK |
- OMAP24XX_AUTOSTATE_L4_MASK |
- OMAP24XX_AUTOSTATE_L3_MASK,
- CORE_MOD, CM_CLKSTCTRL);
- cm_write_mod_reg(OMAP24XX_AUTOSTATE_GFX_MASK, GFX_MOD, CM_CLKSTCTRL);
- cm_write_mod_reg(OMAP2420_AUTOSTATE_IVA_MASK |
- OMAP24XX_AUTOSTATE_DSP_MASK,
- OMAP24XX_DSP_MOD, CM_CLKSTCTRL);
-
- /* Enable clock autoidle for all domains */
- cm_write_mod_reg(OMAP24XX_AUTO_CAM |
- OMAP24XX_AUTO_MAILBOXES |
- OMAP24XX_AUTO_WDT4 |
- OMAP2420_AUTO_WDT3 |
- OMAP24XX_AUTO_MSPRO |
- OMAP2420_AUTO_MMC |
- OMAP24XX_AUTO_FAC |
- OMAP2420_AUTO_EAC |
- OMAP24XX_AUTO_HDQ |
- OMAP24XX_AUTO_UART2 |
- OMAP24XX_AUTO_UART1 |
- OMAP24XX_AUTO_I2C2 |
- OMAP24XX_AUTO_I2C1 |
- OMAP24XX_AUTO_MCSPI2 |
- OMAP24XX_AUTO_MCSPI1 |
- OMAP24XX_AUTO_MCBSP2 |
- OMAP24XX_AUTO_MCBSP1 |
- OMAP24XX_AUTO_GPT12 |
- OMAP24XX_AUTO_GPT11 |
- OMAP24XX_AUTO_GPT10 |
- OMAP24XX_AUTO_GPT9 |
- OMAP24XX_AUTO_GPT8 |
- OMAP24XX_AUTO_GPT7 |
- OMAP24XX_AUTO_GPT6 |
- OMAP24XX_AUTO_GPT5 |
- OMAP24XX_AUTO_GPT4 |
- OMAP24XX_AUTO_GPT3 |
- OMAP24XX_AUTO_GPT2 |
- OMAP2420_AUTO_VLYNQ |
- OMAP24XX_AUTO_DSS,
- CORE_MOD, CM_AUTOIDLE1);
- cm_write_mod_reg(OMAP24XX_AUTO_UART3 |
- OMAP24XX_AUTO_SSI |
- OMAP24XX_AUTO_USB,
- CORE_MOD, CM_AUTOIDLE2);
- cm_write_mod_reg(OMAP24XX_AUTO_SDRC |
- OMAP24XX_AUTO_GPMC |
- OMAP24XX_AUTO_SDMA,
- CORE_MOD, CM_AUTOIDLE3);
- cm_write_mod_reg(OMAP24XX_AUTO_PKA |
- OMAP24XX_AUTO_AES |
- OMAP24XX_AUTO_RNG |
- OMAP24XX_AUTO_SHA |
- OMAP24XX_AUTO_DES,
- CORE_MOD, OMAP24XX_CM_AUTOIDLE4);
-
- cm_write_mod_reg(OMAP2420_AUTO_DSP_IPI, OMAP24XX_DSP_MOD, CM_AUTOIDLE);
-
- /* Put DPLL and both APLLs into autoidle mode */
- cm_write_mod_reg((0x03 << OMAP24XX_AUTO_DPLL_SHIFT) |
- (0x03 << OMAP24XX_AUTO_96M_SHIFT) |
- (0x03 << OMAP24XX_AUTO_54M_SHIFT),
- PLL_MOD, CM_AUTOIDLE);
-
- cm_write_mod_reg(OMAP24XX_AUTO_OMAPCTRL |
- OMAP24XX_AUTO_WDT1 |
- OMAP24XX_AUTO_MPU_WDT |
- OMAP24XX_AUTO_GPIOS |
- OMAP24XX_AUTO_32KSYNC |
- OMAP24XX_AUTO_GPT1,
- WKUP_MOD, CM_AUTOIDLE);
-
- /* REVISIT: Configure number of 32 kHz clock cycles for sys_clk
- * stabilisation */
- __raw_writel(15 << OMAP_SETUP_TIME_SHIFT, OMAP24XX_PRCM_CLKSSETUP);
-
- /* Configure automatic voltage transition */
- __raw_writel(2 << OMAP_SETUP_TIME_SHIFT, OMAP24XX_PRCM_VOLTSETUP);
- __raw_writel(OMAP24XX_AUTO_EXTVOLT |
- (0x1 << OMAP24XX_SETOFF_LEVEL_SHIFT) |
- OMAP24XX_MEMRETCTRL |
- (0x1 << OMAP24XX_SETRET_LEVEL_SHIFT) |
- (0x0 << OMAP24XX_VOLT_LEVEL_SHIFT),
- OMAP24XX_PRCM_VOLTCTRL);
-
- /* Enable wake-up events */
- prm_write_mod_reg(OMAP24XX_EN_GPIOS | OMAP24XX_EN_GPT1,
- WKUP_MOD, PM_WKEN);
-}
-
-static int __init omap2_pm_init(void)
-{
- u32 l;
- int error;
-
- printk(KERN_INFO "Power Management for OMAP2 initializing\n");
- l = __raw_readl(OMAP24XX_PRCM_REVISION);
- printk(KERN_INFO "PRCM revision %d.%d\n", (l >> 4) & 0x0f, l & 0x0f);
-
- osc_ck = clk_get(NULL, "osc_ck");
- if (IS_ERR(osc_ck)) {
- printk(KERN_ERR "could not get osc_ck\n");
- return -ENODEV;
- }
-
- if (cpu_is_omap242x()) {
- emul_ck = clk_get(NULL, "emul_ck");
- if (IS_ERR(emul_ck)) {
- printk(KERN_ERR "could not get emul_ck\n");
- clk_put(osc_ck);
- return -ENODEV;
- }
- }
-
- prcm_setup_regs();
-
- pm_init_serial_console();
-
- /* Hack to prevent MPU retention when STI console is enabled. */
- {
- const struct omap_sti_console_config *sti;
-
- sti = omap_get_config(OMAP_TAG_STI_CONSOLE,
- struct omap_sti_console_config);
- if (sti != NULL && sti->enable)
- sti_console_enabled = 1;
- }
-
- /*
- * 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);
-
- /* Patch in the correct register addresses for multiboot */
- omap_sram_patch_va(omap24xx_cpu_suspend, &omap2_ocs_sdrc_power,
- omap2_sram_suspend,
- OMAP_SDRC_REGADDR(SDRC_POWER));
- omap_sram_patch_va(omap24xx_cpu_suspend, &omap2_ocs_sdrc_dlla_ctrl,
- omap2_sram_suspend,
- OMAP_SDRC_REGADDR(SDRC_DLLA_CTRL));
-
- suspend_set_ops(&omap_pm_ops);
- pm_idle = omap2_pm_idle;
-
+ /* disabled till drivers are fixed */
+ enable_dyn_sleep = 0;
error = sysfs_create_file(power_kobj, &sleep_while_idle_attr.attr);
if (error)
printk(KERN_ERR "sysfs_create_file failed: %d\n", error);
+ error = sysfs_create_file(power_kobj,
+ &clocks_off_while_idle_attr.attr);
+ if (error)
+ printk(KERN_ERR "sysfs_create_file failed: %d\n", error);
- return 0;
+ return error;
}
-late_initcall(omap2_pm_init);
+late_initcall(omap_pm_init);
projects / linux-2.6-omap-h63xx.git / blobdiff