diff options
Diffstat (limited to 'arch/arm/mach-omap1/pm.c')
| -rw-r--r-- | arch/arm/mach-omap1/pm.c | 84 |
1 files changed, 40 insertions, 44 deletions
diff --git a/arch/arm/mach-omap1/pm.c b/arch/arm/mach-omap1/pm.c index 7a7690ab6cb8..dd712f109738 100644 --- a/arch/arm/mach-omap1/pm.c +++ b/arch/arm/mach-omap1/pm.c @@ -37,12 +37,14 @@ #include <linux/suspend.h> #include <linux/sched.h> -#include <linux/proc_fs.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> #include <linux/interrupt.h> #include <linux/sysfs.h> #include <linux/module.h> #include <linux/io.h> #include <linux/atomic.h> +#include <linux/cpu.h> #include <asm/fncpy.h> #include <asm/system_misc.h> @@ -422,23 +424,12 @@ void omap1_pm_suspend(void) omap_rev()); } -#if defined(DEBUG) && defined(CONFIG_PROC_FS) -static int g_read_completed; - +#ifdef CONFIG_DEBUG_FS /* * 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) +static int omap_pm_debug_show(struct seq_file *m, void *v) { - int my_buffer_offset = 0; - char * const my_base = page_buffer; - ARM_SAVE(ARM_CKCTL); ARM_SAVE(ARM_IDLECT1); ARM_SAVE(ARM_IDLECT2); @@ -479,10 +470,7 @@ static int omap_pm_read_proc( MPUI1610_SAVE(EMIFS_CONFIG); } - if (virtual_start == 0) { - g_read_completed = 0; - - my_buffer_offset += sprintf(my_base + my_buffer_offset, + seq_printf(m, "ARM_CKCTL_REG: 0x%-8x \n" "ARM_IDLECT1_REG: 0x%-8x \n" "ARM_IDLECT2_REG: 0x%-8x \n" @@ -512,8 +500,8 @@ static int omap_pm_read_proc( ULPD_SHOW(ULPD_STATUS_REQ), ULPD_SHOW(ULPD_POWER_CTRL)); - if (cpu_is_omap7xx()) { - my_buffer_offset += sprintf(my_base + my_buffer_offset, + if (cpu_is_omap7xx()) { + seq_printf(m, "MPUI7XX_CTRL_REG 0x%-8x \n" "MPUI7XX_DSP_STATUS_REG: 0x%-8x \n" "MPUI7XX_DSP_BOOT_CONFIG_REG: 0x%-8x \n" @@ -526,8 +514,8 @@ static int omap_pm_read_proc( 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, + } else if (cpu_is_omap15xx()) { + seq_printf(m, "MPUI1510_CTRL_REG 0x%-8x \n" "MPUI1510_DSP_STATUS_REG: 0x%-8x \n" "MPUI1510_DSP_BOOT_CONFIG_REG: 0x%-8x \n" @@ -540,8 +528,8 @@ static int omap_pm_read_proc( 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, + } else if (cpu_is_omap16xx()) { + seq_printf(m, "MPUI1610_CTRL_REG 0x%-8x \n" "MPUI1610_DSP_STATUS_REG: 0x%-8x \n" "MPUI1610_DSP_BOOT_CONFIG_REG: 0x%-8x \n" @@ -554,28 +542,37 @@ static int omap_pm_read_proc( 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; + return 0; } -static void omap_pm_init_proc(void) +static int omap_pm_debug_open(struct inode *inode, struct file *file) { - /* XXX Appears to leak memory */ - create_proc_read_entry("driver/omap_pm", - S_IWUSR | S_IRUGO, NULL, - omap_pm_read_proc, NULL); + return single_open(file, omap_pm_debug_show, + &inode->i_private); } -#endif /* DEBUG && CONFIG_PROC_FS */ +static const struct file_operations omap_pm_debug_fops = { + .open = omap_pm_debug_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, +}; + +static void omap_pm_init_debugfs(void) +{ + struct dentry *d; + + d = debugfs_create_dir("pm_debug", NULL); + if (!d) + return; + + (void) debugfs_create_file("omap_pm", S_IWUSR | S_IRUGO, + d, NULL, &omap_pm_debug_fops); +} + +#endif /* CONFIG_DEBUG_FS */ /* * omap_pm_prepare - Do preliminary suspend work. @@ -584,8 +581,7 @@ static void omap_pm_init_proc(void) static int omap_pm_prepare(void) { /* We cannot sleep in idle until we have resumed */ - disable_hlt(); - + cpu_idle_poll_ctrl(true); return 0; } @@ -621,7 +617,7 @@ static int omap_pm_enter(suspend_state_t state) static void omap_pm_finish(void) { - enable_hlt(); + cpu_idle_poll_ctrl(false); } @@ -701,8 +697,8 @@ static int __init omap_pm_init(void) suspend_set_ops(&omap_pm_ops); -#if defined(DEBUG) && defined(CONFIG_PROC_FS) - omap_pm_init_proc(); +#ifdef CONFIG_DEBUG_FS + omap_pm_init_debugfs(); #endif #ifdef CONFIG_OMAP_32K_TIMER |