diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-omap1/pm.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/mach-omap1/pm.c | 722 |
1 files changed, 0 insertions, 722 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-omap1/pm.c b/ANDROID_3.4.5/arch/arm/mach-omap1/pm.c deleted file mode 100644 index f66c3291..00000000 --- a/ANDROID_3.4.5/arch/arm/mach-omap1/pm.c +++ /dev/null @@ -1,722 +0,0 @@ -/* - * linux/arch/arm/mach-omap1/pm.c - * - * OMAP Power Management Routines - * - * Original code for the SA11x0: - * Copyright (c) 2001 Cliff Brake <cbrake@accelent.com> - * - * Modified for the PXA250 by Nicolas Pitre: - * Copyright (c) 2002 Monta Vista Software, Inc. - * - * Modified for the OMAP1510 by David Singleton: - * Copyright (c) 2002 Monta Vista Software, Inc. - * - * Cleanup 2004 for OMAP1510/1610 by Dirk Behme <dirk.behme@de.bosch.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#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/io.h> -#include <linux/atomic.h> - -#include <asm/system_misc.h> -#include <asm/irq.h> -#include <asm/mach/time.h> -#include <asm/mach/irq.h> - -#include <plat/cpu.h> -#include <plat/clock.h> -#include <plat/sram.h> -#include <plat/tc.h> -#include <plat/mux.h> -#include <plat/dma.h> -#include <plat/dmtimer.h> - -#include <mach/irqs.h> - -#include "iomap.h" -#include "pm.h" - -static unsigned int arm_sleep_save[ARM_SLEEP_SAVE_SIZE]; -static unsigned short dsp_sleep_save[DSP_SLEEP_SAVE_SIZE]; -static unsigned short ulpd_sleep_save[ULPD_SLEEP_SAVE_SIZE]; -static unsigned int mpui7xx_sleep_save[MPUI7XX_SLEEP_SAVE_SIZE]; -static unsigned int mpui1510_sleep_save[MPUI1510_SLEEP_SAVE_SIZE]; -static unsigned int mpui1610_sleep_save[MPUI1610_SLEEP_SAVE_SIZE]; - -#ifdef CONFIG_OMAP_32K_TIMER - -static unsigned short enable_dyn_sleep = 1; - -static ssize_t idle_show(struct kobject *kobj, struct kobj_attribute *attr, - char *buf) -{ - return sprintf(buf, "%hu\n", enable_dyn_sleep); -} - -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"); - 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); - -#endif - -static void (*omap_sram_suspend)(unsigned long r0, unsigned long r1) = NULL; - -/* - * Let's power down on idle, but only if we are really - * idle, because once we start down the path of - * going idle we continue to do idle even if we get - * a clock tick interrupt . . - */ -void omap1_pm_idle(void) -{ - extern __u32 arm_idlect1_mask; - __u32 use_idlect1 = arm_idlect1_mask; - int do_sleep = 0; - - local_fiq_disable(); - -#if defined(CONFIG_OMAP_MPU_TIMER) && !defined(CONFIG_OMAP_DM_TIMER) -#warning Enable 32kHz OS timer in order to allow sleep states in idle - use_idlect1 = use_idlect1 & ~(1 << 9); -#else - - while (enable_dyn_sleep) { - -#ifdef CONFIG_CBUS_TAHVO_USB - extern int vbus_active; - /* Clock requirements? */ - if (vbus_active) - break; -#endif - do_sleep = 1; - break; - } - -#endif - -#ifdef CONFIG_OMAP_DM_TIMER - use_idlect1 = omap_dm_timer_modify_idlect_mask(use_idlect1); -#endif - - if (omap_dma_running()) - use_idlect1 &= ~(1 << 6); - - /* We should be able to remove the do_sleep variable and multiple - * tests above as soon as drivers, timer and DMA code have been fixed. - * Even the sleep block count should become obsolete. */ - if ((use_idlect1 != ~0) || !do_sleep) { - - __u32 saved_idlect1 = omap_readl(ARM_IDLECT1); - if (cpu_is_omap15xx()) - use_idlect1 &= OMAP1510_BIG_SLEEP_REQUEST; - else - use_idlect1 &= OMAP1610_IDLECT1_SLEEP_VAL; - omap_writel(use_idlect1, ARM_IDLECT1); - __asm__ volatile ("mcr p15, 0, r0, c7, c0, 4"); - omap_writel(saved_idlect1, ARM_IDLECT1); - - local_fiq_enable(); - return; - } - omap_sram_suspend(omap_readl(ARM_IDLECT1), - omap_readl(ARM_IDLECT2)); - - local_fiq_enable(); -} - -/* - * Configuration of the wakeup event is board specific. For the - * moment we put it into this helper function. Later it may move - * to board specific files. - */ -static void omap_pm_wakeup_setup(void) -{ - u32 level1_wake = 0; - u32 level2_wake = OMAP_IRQ_BIT(INT_UART2); - - /* - * Turn off all interrupts except GPIO bank 1, L1-2nd level cascade, - * and the L2 wakeup interrupts: keypad and UART2. Note that the - * drivers must still separately call omap_set_gpio_wakeup() to - * wake up to a GPIO interrupt. - */ - if (cpu_is_omap7xx()) - level1_wake = OMAP_IRQ_BIT(INT_7XX_GPIO_BANK1) | - OMAP_IRQ_BIT(INT_7XX_IH2_IRQ); - else if (cpu_is_omap15xx()) - level1_wake = OMAP_IRQ_BIT(INT_GPIO_BANK1) | - OMAP_IRQ_BIT(INT_1510_IH2_IRQ); - else if (cpu_is_omap16xx()) - level1_wake = OMAP_IRQ_BIT(INT_GPIO_BANK1) | - OMAP_IRQ_BIT(INT_1610_IH2_IRQ); - - omap_writel(~level1_wake, OMAP_IH1_MIR); - - if (cpu_is_omap7xx()) { - omap_writel(~level2_wake, OMAP_IH2_0_MIR); - omap_writel(~(OMAP_IRQ_BIT(INT_7XX_WAKE_UP_REQ) | - OMAP_IRQ_BIT(INT_7XX_MPUIO_KEYPAD)), - OMAP_IH2_1_MIR); - } else if (cpu_is_omap15xx()) { - level2_wake |= OMAP_IRQ_BIT(INT_KEYBOARD); - omap_writel(~level2_wake, OMAP_IH2_MIR); - } else if (cpu_is_omap16xx()) { - level2_wake |= OMAP_IRQ_BIT(INT_KEYBOARD); - omap_writel(~level2_wake, OMAP_IH2_0_MIR); - - /* INT_1610_WAKE_UP_REQ is needed for GPIO wakeup... */ - omap_writel(~OMAP_IRQ_BIT(INT_1610_WAKE_UP_REQ), - OMAP_IH2_1_MIR); - omap_writel(~0x0, OMAP_IH2_2_MIR); - omap_writel(~0x0, OMAP_IH2_3_MIR); - } - - /* New IRQ agreement, recalculate in cascade order */ - omap_writel(1, OMAP_IH2_CONTROL); - omap_writel(1, OMAP_IH1_CONTROL); -} - -#define EN_DSPCK 13 /* ARM_CKCTL */ -#define EN_APICK 6 /* ARM_IDLECT2 */ -#define DSP_EN 1 /* ARM_RSTCT1 */ - -void omap1_pm_suspend(void) -{ - unsigned long arg0 = 0, arg1 = 0; - - printk(KERN_INFO "PM: OMAP%x is trying to enter deep sleep...\n", - omap_rev()); - - omap_serial_wake_trigger(1); - - if (!cpu_is_omap15xx()) - omap_writew(0xffff, ULPD_SOFT_DISABLE_REQ_REG); - - /* - * Step 1: turn off interrupts (FIXME: NOTE: already disabled) - */ - - local_irq_disable(); - local_fiq_disable(); - - /* - * Step 2: save registers - * - * The omap is a strange/beautiful device. The caches, memory - * and register state are preserved across power saves. - * We have to save and restore very little register state to - * idle the omap. - * - * Save interrupt, MPUI, ARM and UPLD control registers. - */ - - if (cpu_is_omap7xx()) { - MPUI7XX_SAVE(OMAP_IH1_MIR); - MPUI7XX_SAVE(OMAP_IH2_0_MIR); - MPUI7XX_SAVE(OMAP_IH2_1_MIR); - MPUI7XX_SAVE(MPUI_CTRL); - MPUI7XX_SAVE(MPUI_DSP_BOOT_CONFIG); - MPUI7XX_SAVE(MPUI_DSP_API_CONFIG); - MPUI7XX_SAVE(EMIFS_CONFIG); - MPUI7XX_SAVE(EMIFF_SDRAM_CONFIG); - - } else if (cpu_is_omap15xx()) { - MPUI1510_SAVE(OMAP_IH1_MIR); - MPUI1510_SAVE(OMAP_IH2_MIR); - MPUI1510_SAVE(MPUI_CTRL); - MPUI1510_SAVE(MPUI_DSP_BOOT_CONFIG); - MPUI1510_SAVE(MPUI_DSP_API_CONFIG); - MPUI1510_SAVE(EMIFS_CONFIG); - MPUI1510_SAVE(EMIFF_SDRAM_CONFIG); - } else if (cpu_is_omap16xx()) { - MPUI1610_SAVE(OMAP_IH1_MIR); - MPUI1610_SAVE(OMAP_IH2_0_MIR); - MPUI1610_SAVE(OMAP_IH2_1_MIR); - MPUI1610_SAVE(OMAP_IH2_2_MIR); - MPUI1610_SAVE(OMAP_IH2_3_MIR); - MPUI1610_SAVE(MPUI_CTRL); - MPUI1610_SAVE(MPUI_DSP_BOOT_CONFIG); - MPUI1610_SAVE(MPUI_DSP_API_CONFIG); - MPUI1610_SAVE(EMIFS_CONFIG); - MPUI1610_SAVE(EMIFF_SDRAM_CONFIG); - } - - ARM_SAVE(ARM_CKCTL); - ARM_SAVE(ARM_IDLECT1); - ARM_SAVE(ARM_IDLECT2); - if (!(cpu_is_omap15xx())) - ARM_SAVE(ARM_IDLECT3); - ARM_SAVE(ARM_EWUPCT); - ARM_SAVE(ARM_RSTCT1); - ARM_SAVE(ARM_RSTCT2); - ARM_SAVE(ARM_SYSST); - ULPD_SAVE(ULPD_CLOCK_CTRL); - ULPD_SAVE(ULPD_STATUS_REQ); - - /* (Step 3 removed - we now allow deep sleep by default) */ - - /* - * Step 4: OMAP DSP Shutdown - */ - - /* stop DSP */ - omap_writew(omap_readw(ARM_RSTCT1) & ~(1 << DSP_EN), ARM_RSTCT1); - - /* shut down dsp_ck */ - if (!cpu_is_omap7xx()) - omap_writew(omap_readw(ARM_CKCTL) & ~(1 << EN_DSPCK), ARM_CKCTL); - - /* temporarily enabling api_ck to access DSP registers */ - omap_writew(omap_readw(ARM_IDLECT2) | 1 << EN_APICK, ARM_IDLECT2); - - /* save DSP registers */ - DSP_SAVE(DSP_IDLECT2); - - /* Stop all DSP domain clocks */ - __raw_writew(0, DSP_IDLECT2); - - /* - * Step 5: Wakeup Event Setup - */ - - omap_pm_wakeup_setup(); - - /* - * Step 6: ARM and Traffic controller shutdown - */ - - /* disable ARM watchdog */ - omap_writel(0x00F5, OMAP_WDT_TIMER_MODE); - omap_writel(0x00A0, OMAP_WDT_TIMER_MODE); - - /* - * Step 6b: ARM and Traffic controller shutdown - * - * Step 6 continues here. Prepare jump to power management - * assembly code in internal SRAM. - * - * Since the omap_cpu_suspend routine has been copied to - * SRAM, we'll do an indirect procedure call to it and pass the - * contents of arm_idlect1 and arm_idlect2 so it can restore - * them when it wakes up and it will return. - */ - - arg0 = arm_sleep_save[ARM_SLEEP_SAVE_ARM_IDLECT1]; - arg1 = arm_sleep_save[ARM_SLEEP_SAVE_ARM_IDLECT2]; - - /* - * Step 6c: ARM and Traffic controller shutdown - * - * Jump to assembly code. The processor will stay there - * until wake up. - */ - omap_sram_suspend(arg0, arg1); - - /* - * If we are here, processor is woken up! - */ - - /* - * Restore DSP clocks - */ - - /* again temporarily enabling api_ck to access DSP registers */ - omap_writew(omap_readw(ARM_IDLECT2) | 1 << EN_APICK, ARM_IDLECT2); - - /* Restore DSP domain clocks */ - DSP_RESTORE(DSP_IDLECT2); - - /* - * Restore ARM state, except ARM_IDLECT1/2 which omap_cpu_suspend did - */ - - if (!(cpu_is_omap15xx())) - ARM_RESTORE(ARM_IDLECT3); - ARM_RESTORE(ARM_CKCTL); - ARM_RESTORE(ARM_EWUPCT); - ARM_RESTORE(ARM_RSTCT1); - ARM_RESTORE(ARM_RSTCT2); - ARM_RESTORE(ARM_SYSST); - ULPD_RESTORE(ULPD_CLOCK_CTRL); - ULPD_RESTORE(ULPD_STATUS_REQ); - - if (cpu_is_omap7xx()) { - MPUI7XX_RESTORE(EMIFS_CONFIG); - MPUI7XX_RESTORE(EMIFF_SDRAM_CONFIG); - MPUI7XX_RESTORE(OMAP_IH1_MIR); - MPUI7XX_RESTORE(OMAP_IH2_0_MIR); - MPUI7XX_RESTORE(OMAP_IH2_1_MIR); - } else if (cpu_is_omap15xx()) { - MPUI1510_RESTORE(MPUI_CTRL); - MPUI1510_RESTORE(MPUI_DSP_BOOT_CONFIG); - MPUI1510_RESTORE(MPUI_DSP_API_CONFIG); - MPUI1510_RESTORE(EMIFS_CONFIG); - MPUI1510_RESTORE(EMIFF_SDRAM_CONFIG); - MPUI1510_RESTORE(OMAP_IH1_MIR); - MPUI1510_RESTORE(OMAP_IH2_MIR); - } else if (cpu_is_omap16xx()) { - MPUI1610_RESTORE(MPUI_CTRL); - MPUI1610_RESTORE(MPUI_DSP_BOOT_CONFIG); - MPUI1610_RESTORE(MPUI_DSP_API_CONFIG); - MPUI1610_RESTORE(EMIFS_CONFIG); - MPUI1610_RESTORE(EMIFF_SDRAM_CONFIG); - - MPUI1610_RESTORE(OMAP_IH1_MIR); - MPUI1610_RESTORE(OMAP_IH2_0_MIR); - MPUI1610_RESTORE(OMAP_IH2_1_MIR); - MPUI1610_RESTORE(OMAP_IH2_2_MIR); - MPUI1610_RESTORE(OMAP_IH2_3_MIR); - } - - if (!cpu_is_omap15xx()) - omap_writew(0, ULPD_SOFT_DISABLE_REQ_REG); - - /* - * Re-enable interrupts - */ - - local_irq_enable(); - local_fiq_enable(); - - omap_serial_wake_trigger(0); - - printk(KERN_INFO "PM: OMAP%x is re-starting from deep sleep...\n", - omap_rev()); -} - -#if defined(DEBUG) && defined(CONFIG_PROC_FS) -static int g_read_completed; - -/* - * Read system PM registers for debugging - */ -static int omap_pm_read_proc( - char *page_buffer, - char **my_first_byte, - off_t virtual_start, - int length, - int *eof, - void *data) -{ - int my_buffer_offset = 0; - char * const my_base = page_buffer; - - ARM_SAVE(ARM_CKCTL); - ARM_SAVE(ARM_IDLECT1); - ARM_SAVE(ARM_IDLECT2); - if (!(cpu_is_omap15xx())) - ARM_SAVE(ARM_IDLECT3); - ARM_SAVE(ARM_EWUPCT); - ARM_SAVE(ARM_RSTCT1); - ARM_SAVE(ARM_RSTCT2); - ARM_SAVE(ARM_SYSST); - - ULPD_SAVE(ULPD_IT_STATUS); - ULPD_SAVE(ULPD_CLOCK_CTRL); - ULPD_SAVE(ULPD_SOFT_REQ); - ULPD_SAVE(ULPD_STATUS_REQ); - ULPD_SAVE(ULPD_DPLL_CTRL); - ULPD_SAVE(ULPD_POWER_CTRL); - - if (cpu_is_omap7xx()) { - MPUI7XX_SAVE(MPUI_CTRL); - MPUI7XX_SAVE(MPUI_DSP_STATUS); - MPUI7XX_SAVE(MPUI_DSP_BOOT_CONFIG); - MPUI7XX_SAVE(MPUI_DSP_API_CONFIG); - MPUI7XX_SAVE(EMIFF_SDRAM_CONFIG); - MPUI7XX_SAVE(EMIFS_CONFIG); - } else if (cpu_is_omap15xx()) { - MPUI1510_SAVE(MPUI_CTRL); - MPUI1510_SAVE(MPUI_DSP_STATUS); - MPUI1510_SAVE(MPUI_DSP_BOOT_CONFIG); - MPUI1510_SAVE(MPUI_DSP_API_CONFIG); - MPUI1510_SAVE(EMIFF_SDRAM_CONFIG); - MPUI1510_SAVE(EMIFS_CONFIG); - } else if (cpu_is_omap16xx()) { - MPUI1610_SAVE(MPUI_CTRL); - MPUI1610_SAVE(MPUI_DSP_STATUS); - MPUI1610_SAVE(MPUI_DSP_BOOT_CONFIG); - MPUI1610_SAVE(MPUI_DSP_API_CONFIG); - MPUI1610_SAVE(EMIFF_SDRAM_CONFIG); - MPUI1610_SAVE(EMIFS_CONFIG); - } - - if (virtual_start == 0) { - g_read_completed = 0; - - my_buffer_offset += sprintf(my_base + my_buffer_offset, - "ARM_CKCTL_REG: 0x%-8x \n" - "ARM_IDLECT1_REG: 0x%-8x \n" - "ARM_IDLECT2_REG: 0x%-8x \n" - "ARM_IDLECT3_REG: 0x%-8x \n" - "ARM_EWUPCT_REG: 0x%-8x \n" - "ARM_RSTCT1_REG: 0x%-8x \n" - "ARM_RSTCT2_REG: 0x%-8x \n" - "ARM_SYSST_REG: 0x%-8x \n" - "ULPD_IT_STATUS_REG: 0x%-4x \n" - "ULPD_CLOCK_CTRL_REG: 0x%-4x \n" - "ULPD_SOFT_REQ_REG: 0x%-4x \n" - "ULPD_DPLL_CTRL_REG: 0x%-4x \n" - "ULPD_STATUS_REQ_REG: 0x%-4x \n" - "ULPD_POWER_CTRL_REG: 0x%-4x \n", - ARM_SHOW(ARM_CKCTL), - ARM_SHOW(ARM_IDLECT1), - ARM_SHOW(ARM_IDLECT2), - ARM_SHOW(ARM_IDLECT3), - ARM_SHOW(ARM_EWUPCT), - ARM_SHOW(ARM_RSTCT1), - ARM_SHOW(ARM_RSTCT2), - ARM_SHOW(ARM_SYSST), - ULPD_SHOW(ULPD_IT_STATUS), - ULPD_SHOW(ULPD_CLOCK_CTRL), - ULPD_SHOW(ULPD_SOFT_REQ), - ULPD_SHOW(ULPD_DPLL_CTRL), - ULPD_SHOW(ULPD_STATUS_REQ), - ULPD_SHOW(ULPD_POWER_CTRL)); - - if (cpu_is_omap7xx()) { - my_buffer_offset += sprintf(my_base + my_buffer_offset, - "MPUI7XX_CTRL_REG 0x%-8x \n" - "MPUI7XX_DSP_STATUS_REG: 0x%-8x \n" - "MPUI7XX_DSP_BOOT_CONFIG_REG: 0x%-8x \n" - "MPUI7XX_DSP_API_CONFIG_REG: 0x%-8x \n" - "MPUI7XX_SDRAM_CONFIG_REG: 0x%-8x \n" - "MPUI7XX_EMIFS_CONFIG_REG: 0x%-8x \n", - MPUI7XX_SHOW(MPUI_CTRL), - MPUI7XX_SHOW(MPUI_DSP_STATUS), - MPUI7XX_SHOW(MPUI_DSP_BOOT_CONFIG), - MPUI7XX_SHOW(MPUI_DSP_API_CONFIG), - MPUI7XX_SHOW(EMIFF_SDRAM_CONFIG), - MPUI7XX_SHOW(EMIFS_CONFIG)); - } else if (cpu_is_omap15xx()) { - my_buffer_offset += sprintf(my_base + my_buffer_offset, - "MPUI1510_CTRL_REG 0x%-8x \n" - "MPUI1510_DSP_STATUS_REG: 0x%-8x \n" - "MPUI1510_DSP_BOOT_CONFIG_REG: 0x%-8x \n" - "MPUI1510_DSP_API_CONFIG_REG: 0x%-8x \n" - "MPUI1510_SDRAM_CONFIG_REG: 0x%-8x \n" - "MPUI1510_EMIFS_CONFIG_REG: 0x%-8x \n", - MPUI1510_SHOW(MPUI_CTRL), - MPUI1510_SHOW(MPUI_DSP_STATUS), - MPUI1510_SHOW(MPUI_DSP_BOOT_CONFIG), - MPUI1510_SHOW(MPUI_DSP_API_CONFIG), - MPUI1510_SHOW(EMIFF_SDRAM_CONFIG), - MPUI1510_SHOW(EMIFS_CONFIG)); - } else if (cpu_is_omap16xx()) { - my_buffer_offset += sprintf(my_base + my_buffer_offset, - "MPUI1610_CTRL_REG 0x%-8x \n" - "MPUI1610_DSP_STATUS_REG: 0x%-8x \n" - "MPUI1610_DSP_BOOT_CONFIG_REG: 0x%-8x \n" - "MPUI1610_DSP_API_CONFIG_REG: 0x%-8x \n" - "MPUI1610_SDRAM_CONFIG_REG: 0x%-8x \n" - "MPUI1610_EMIFS_CONFIG_REG: 0x%-8x \n", - MPUI1610_SHOW(MPUI_CTRL), - MPUI1610_SHOW(MPUI_DSP_STATUS), - MPUI1610_SHOW(MPUI_DSP_BOOT_CONFIG), - MPUI1610_SHOW(MPUI_DSP_API_CONFIG), - MPUI1610_SHOW(EMIFF_SDRAM_CONFIG), - MPUI1610_SHOW(EMIFS_CONFIG)); - } - - g_read_completed++; - } else if (g_read_completed >= 1) { - *eof = 1; - return 0; - } - g_read_completed++; - - *my_first_byte = page_buffer; - return my_buffer_offset; -} - -static void omap_pm_init_proc(void) -{ - struct proc_dir_entry *entry; - - entry = create_proc_read_entry("driver/omap_pm", - S_IWUSR | S_IRUGO, NULL, - omap_pm_read_proc, NULL); -} - -#endif /* DEBUG && CONFIG_PROC_FS */ - -/* - * omap_pm_prepare - Do preliminary suspend work. - * - */ -static int omap_pm_prepare(void) -{ - /* We cannot sleep in idle until we have resumed */ - disable_hlt(); - - return 0; -} - - -/* - * omap_pm_enter - Actually enter a sleep state. - * @state: State we're entering. - * - */ - -static int omap_pm_enter(suspend_state_t state) -{ - switch (state) - { - case PM_SUSPEND_STANDBY: - case PM_SUSPEND_MEM: - omap1_pm_suspend(); - break; - default: - return -EINVAL; - } - - return 0; -} - - -/** - * omap_pm_finish - Finish up suspend sequence. - * - * This is called after we wake back up (or if entering the sleep state - * failed). - */ - -static void omap_pm_finish(void) -{ - enable_hlt(); -} - - -static irqreturn_t omap_wakeup_interrupt(int irq, void *dev) -{ - return IRQ_HANDLED; -} - -static struct irqaction omap_wakeup_irq = { - .name = "peripheral wakeup", - .flags = IRQF_DISABLED, - .handler = omap_wakeup_interrupt -}; - - - -static const struct platform_suspend_ops omap_pm_ops = { - .prepare = omap_pm_prepare, - .enter = omap_pm_enter, - .finish = omap_pm_finish, - .valid = suspend_valid_only_mem, -}; - -static int __init omap_pm_init(void) -{ - -#ifdef CONFIG_OMAP_32K_TIMER - int error; -#endif - - if (!cpu_class_is_omap1()) - return -ENODEV; - - printk("Power Management for TI OMAP.\n"); - - /* - * 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. - */ - if (cpu_is_omap7xx()) { - omap_sram_suspend = omap_sram_push(omap7xx_cpu_suspend, - omap7xx_cpu_suspend_sz); - } else if (cpu_is_omap15xx()) { - omap_sram_suspend = omap_sram_push(omap1510_cpu_suspend, - omap1510_cpu_suspend_sz); - } else if (cpu_is_omap16xx()) { - omap_sram_suspend = omap_sram_push(omap1610_cpu_suspend, - omap1610_cpu_suspend_sz); - } - - if (omap_sram_suspend == NULL) { - printk(KERN_ERR "PM not initialized: Missing SRAM support\n"); - return -ENODEV; - } - - arm_pm_idle = omap1_pm_idle; - - if (cpu_is_omap7xx()) - setup_irq(INT_7XX_WAKE_UP_REQ, &omap_wakeup_irq); - else if (cpu_is_omap16xx()) - setup_irq(INT_1610_WAKE_UP_REQ, &omap_wakeup_irq); - - /* Program new power ramp-up time - * (0 for most boards since we don't lower voltage when in deep sleep) - */ - omap_writew(ULPD_SETUP_ANALOG_CELL_3_VAL, ULPD_SETUP_ANALOG_CELL_3); - - /* Setup ULPD POWER_CTRL_REG - enter deep sleep whenever possible */ - omap_writew(ULPD_POWER_CTRL_REG_VAL, ULPD_POWER_CTRL); - - /* Configure IDLECT3 */ - if (cpu_is_omap7xx()) - omap_writel(OMAP7XX_IDLECT3_VAL, OMAP7XX_IDLECT3); - else if (cpu_is_omap16xx()) - omap_writel(OMAP1610_IDLECT3_VAL, OMAP1610_IDLECT3); - - suspend_set_ops(&omap_pm_ops); - -#if defined(DEBUG) && defined(CONFIG_PROC_FS) - omap_pm_init_proc(); -#endif - -#ifdef CONFIG_OMAP_32K_TIMER - error = sysfs_create_file(power_kobj, &sleep_while_idle_attr.attr); - if (error) - printk(KERN_ERR "sysfs_create_file failed: %d\n", error); -#endif - - if (cpu_is_omap16xx()) { - /* configure LOW_PWR pin */ - omap_cfg_reg(T20_1610_LOW_PWR); - } - - return 0; -} -__initcall(omap_pm_init); |