OMAP3: PM debug: remove register dumping

Remove OMAP3-specific register dumping feature from PM debug layer.
This is removed because:

- it's ugly
- it's OMAP3-specific, and will obviously not scale to OMAP4+
- userspace /dev/mem-based tools (like omapconf) can do this much better

Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

arch/arm/mach-omap2/pm-debug.c

@@ -63,10 +63,6 @@ void omap2_pm_wakeup_on_timer(u32 seconds, u32 milliseconds)
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
 
-static void pm_dbg_regset_store(u32 *ptr);
-
-static struct dentry *pm_dbg_dir;
-
 static int pm_dbg_init_done;
 
 static int pm_dbg_init(void);
@@ -76,160 +72,6 @@ enum {
 	DEBUG_FILE_TIMERS,
 };
 
-struct pm_module_def {
-	char name[8]; /* Name of the module */
-	short type; /* CM or PRM */
-	unsigned short offset;
-	int low; /* First register address on this module */
-	int high; /* Last register address on this module */
-};
-
-#define MOD_CM 0
-#define MOD_PRM 1
-
-static const struct pm_module_def *pm_dbg_reg_modules;
-static const struct pm_module_def omap3_pm_reg_modules[] = {
-	{ "IVA2", MOD_CM, OMAP3430_IVA2_MOD, 0, 0x4c },
-	{ "OCP", MOD_CM, OCP_MOD, 0, 0x10 },
-	{ "MPU", MOD_CM, MPU_MOD, 4, 0x4c },
-	{ "CORE", MOD_CM, CORE_MOD, 0, 0x4c },
-	{ "SGX", MOD_CM, OMAP3430ES2_SGX_MOD, 0, 0x4c },
-	{ "WKUP", MOD_CM, WKUP_MOD, 0, 0x40 },
-	{ "CCR", MOD_CM, PLL_MOD, 0, 0x70 },
-	{ "DSS", MOD_CM, OMAP3430_DSS_MOD, 0, 0x4c },
-	{ "CAM", MOD_CM, OMAP3430_CAM_MOD, 0, 0x4c },
-	{ "PER", MOD_CM, OMAP3430_PER_MOD, 0, 0x4c },
-	{ "EMU", MOD_CM, OMAP3430_EMU_MOD, 0x40, 0x54 },
-	{ "NEON", MOD_CM, OMAP3430_NEON_MOD, 0x20, 0x48 },
-	{ "USB", MOD_CM, OMAP3430ES2_USBHOST_MOD, 0, 0x4c },
-
-	{ "IVA2", MOD_PRM, OMAP3430_IVA2_MOD, 0x50, 0xfc },
-	{ "OCP", MOD_PRM, OCP_MOD, 4, 0x1c },
-	{ "MPU", MOD_PRM, MPU_MOD, 0x58, 0xe8 },
-	{ "CORE", MOD_PRM, CORE_MOD, 0x58, 0xf8 },
-	{ "SGX", MOD_PRM, OMAP3430ES2_SGX_MOD, 0x58, 0xe8 },
-	{ "WKUP", MOD_PRM, WKUP_MOD, 0xa0, 0xb0 },
-	{ "CCR", MOD_PRM, PLL_MOD, 0x40, 0x70 },
-	{ "DSS", MOD_PRM, OMAP3430_DSS_MOD, 0x58, 0xe8 },
-	{ "CAM", MOD_PRM, OMAP3430_CAM_MOD, 0x58, 0xe8 },
-	{ "PER", MOD_PRM, OMAP3430_PER_MOD, 0x58, 0xe8 },
-	{ "EMU", MOD_PRM, OMAP3430_EMU_MOD, 0x58, 0xe4 },
-	{ "GLBL", MOD_PRM, OMAP3430_GR_MOD, 0x20, 0xe4 },
-	{ "NEON", MOD_PRM, OMAP3430_NEON_MOD, 0x58, 0xe8 },
-	{ "USB", MOD_PRM, OMAP3430ES2_USBHOST_MOD, 0x58, 0xe8 },
-	{ "", 0, 0, 0, 0 },
-};
-
-#define PM_DBG_MAX_REG_SETS 4
-
-static void *pm_dbg_reg_set[PM_DBG_MAX_REG_SETS];
-
-static int pm_dbg_get_regset_size(void)
-{
-	static int regset_size;
-
-	if (regset_size == 0) {
-		int i = 0;
-
-		while (pm_dbg_reg_modules[i].name[0] != 0) {
-			regset_size += pm_dbg_reg_modules[i].high +
-				4 - pm_dbg_reg_modules[i].low;
-			i++;
-		}
-	}
-	return regset_size;
-}
-
-static int pm_dbg_show_regs(struct seq_file *s, void *unused)
-{
-	int i, j;
-	unsigned long val;
-	int reg_set = (int)s->private;
-	u32 *ptr;
-	void *store = NULL;
-	int regs;
-	int linefeed;
-
-	if (reg_set == 0) {
-		store = kmalloc(pm_dbg_get_regset_size(), GFP_KERNEL);
-		ptr = store;
-		pm_dbg_regset_store(ptr);
-	} else {
-		ptr = pm_dbg_reg_set[reg_set - 1];
-	}
-
-	i = 0;
-
-	while (pm_dbg_reg_modules[i].name[0] != 0) {
-		regs = 0;
-		linefeed = 0;
-		if (pm_dbg_reg_modules[i].type == MOD_CM)
-			seq_printf(s, "MOD: CM_%s (%08x)\n",
-				pm_dbg_reg_modules[i].name,
-				(u32)(OMAP3430_CM_BASE +
-				pm_dbg_reg_modules[i].offset));
-		else
-			seq_printf(s, "MOD: PRM_%s (%08x)\n",
-				pm_dbg_reg_modules[i].name,
-				(u32)(OMAP3430_PRM_BASE +
-				pm_dbg_reg_modules[i].offset));
-
-		for (j = pm_dbg_reg_modules[i].low;
-			j <= pm_dbg_reg_modules[i].high; j += 4) {
-			val = *(ptr++);
-			if (val != 0) {
-				regs++;
-				if (linefeed) {
-					seq_printf(s, "\n");
-					linefeed = 0;
-				}
-				seq_printf(s, "  %02x => %08lx", j, val);
-				if (regs % 4 == 0)
-					linefeed = 1;
-			}
-		}
-		seq_printf(s, "\n");
-		i++;
-	}
-
-	if (store != NULL)
-		kfree(store);
-
-	return 0;
-}
-
-static void pm_dbg_regset_store(u32 *ptr)
-{
-	int i, j;
-	u32 val;
-
-	i = 0;
-
-	while (pm_dbg_reg_modules[i].name[0] != 0) {
-		for (j = pm_dbg_reg_modules[i].low;
-			j <= pm_dbg_reg_modules[i].high; j += 4) {
-			if (pm_dbg_reg_modules[i].type == MOD_CM)
-				val = omap2_cm_read_mod_reg(
-					pm_dbg_reg_modules[i].offset, j);
-			else
-				val = omap2_prm_read_mod_reg(
-					pm_dbg_reg_modules[i].offset, j);
-			*(ptr++) = val;
-		}
-		i++;
-	}
-}
-
-int pm_dbg_regset_save(int reg_set)
-{
-	if (pm_dbg_reg_set[reg_set-1] == NULL)
-		return -EINVAL;
-
-	pm_dbg_regset_store(pm_dbg_reg_set[reg_set-1]);
-
-	return 0;
-}
-
 static const char pwrdm_state_names[][PWRDM_MAX_PWRSTS] = {
 	"OFF",
 	"RET",
@@ -349,11 +191,6 @@ static int pm_dbg_open(struct inode *inode, struct file *file)
 	};
 }
 
-static int pm_dbg_reg_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, pm_dbg_show_regs, inode->i_private);
-}
-
 static const struct file_operations debug_fops = {
 	.open           = pm_dbg_open,
 	.read           = seq_read,
@@ -361,40 +198,6 @@ static const struct file_operations debug_fops = {
 	.release        = single_release,
 };
 
-static const struct file_operations debug_reg_fops = {
-	.open           = pm_dbg_reg_open,
-	.read           = seq_read,
-	.llseek         = seq_lseek,
-	.release        = single_release,
-};
-
-int pm_dbg_regset_init(int reg_set)
-{
-	char name[2];
-
-	if (!pm_dbg_init_done)
-		pm_dbg_init();
-
-	if (reg_set < 1 || reg_set > PM_DBG_MAX_REG_SETS ||
-		pm_dbg_reg_set[reg_set-1] != NULL)
-		return -EINVAL;
-
-	pm_dbg_reg_set[reg_set-1] =
-		kmalloc(pm_dbg_get_regset_size(), GFP_KERNEL);
-
-	if (pm_dbg_reg_set[reg_set-1] == NULL)
-		return -ENOMEM;
-
-	if (pm_dbg_dir != NULL) {
-		sprintf(name, "%d", reg_set);
-
-		(void) debugfs_create_file(name, S_IRUGO,
-			pm_dbg_dir, (void *)reg_set, &debug_reg_fops);
-	}
-
-	return 0;
-}
-
 static int pwrdm_suspend_get(void *data, u64 *val)
 {
 	int ret = -EINVAL;
@@ -477,20 +280,11 @@ DEFINE_SIMPLE_ATTRIBUTE(pm_dbg_option_fops, option_get, option_set, "%llu\n");
 
 static int pm_dbg_init(void)
 {
-	int i;
 	struct dentry *d;
-	char name[2];
 
 	if (pm_dbg_init_done)
 		return 0;
 
-	if (cpu_is_omap34xx())
-		pm_dbg_reg_modules = omap3_pm_reg_modules;
-	else {
-		printk(KERN_ERR "%s: only OMAP3 supported\n", __func__);
-		return -ENODEV;
-	}
-
 	d = debugfs_create_dir("pm_debug", NULL);
 	if (IS_ERR(d))
 		return PTR_ERR(d);
@@ -502,21 +296,6 @@ static int pm_dbg_init(void)
 
 	pwrdm_for_each(pwrdms_setup, (void *)d);
 
-	pm_dbg_dir = debugfs_create_dir("registers", d);
-	if (IS_ERR(pm_dbg_dir))
-		return PTR_ERR(pm_dbg_dir);
-
-	(void) debugfs_create_file("current", S_IRUGO,
-		pm_dbg_dir, (void *)0, &debug_reg_fops);
-
-	for (i = 0; i < PM_DBG_MAX_REG_SETS; i++)
-		if (pm_dbg_reg_set[i] != NULL) {
-			sprintf(name, "%d", i+1);
-			(void) debugfs_create_file(name, S_IRUGO,
-				pm_dbg_dir, (void *)(i+1), &debug_reg_fops);
-
-		}
-
 	(void) debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUSR, d,
 				   &enable_off_mode, &pm_dbg_option_fops);
 	(void) debugfs_create_file("wakeup_timer_seconds", S_IRUGO | S_IWUSR, d,

arch/arm/mach-omap2/pm.h

@@ -74,12 +74,8 @@ extern u32 enable_off_mode;
 
 #if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
 extern void pm_dbg_update_time(struct powerdomain *pwrdm, int prev);
-extern int pm_dbg_regset_save(int reg_set);
-extern int pm_dbg_regset_init(int reg_set);
 #else
 #define pm_dbg_update_time(pwrdm, prev) do {} while (0);
-#define pm_dbg_regset_save(reg_set) do {} while (0);
-#define pm_dbg_regset_init(reg_set) do {} while (0);
 #endif /* CONFIG_PM_DEBUG */
 
 extern void omap24xx_idle_loop_suspend(void);