diff options
author | Kukjin Kim <kgene.kim@samsung.com> | 2011-07-20 21:09:46 +0400 |
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committer | Kukjin Kim <kgene.kim@samsung.com> | 2011-07-20 21:09:46 +0400 |
commit | cf2e9c7b48f1e6c715e30952e5a3a5ef5cd0f8e4 (patch) | |
tree | 8e485f710138a330a56285b2a17d7debadf81c9b /arch/arm/plat-samsung | |
parent | b5930b83c2791bd3b2da120f98f844f96fb2ca50 (diff) | |
parent | e48055999575750158108b4cfc7fc22e4c972efc (diff) | |
download | linux-cf2e9c7b48f1e6c715e30952e5a3a5ef5cd0f8e4.tar.xz |
Merge branch 'next-samsung-clkdev-fix' into next-samsung-cleanup
Diffstat (limited to 'arch/arm/plat-samsung')
-rw-r--r-- | arch/arm/plat-samsung/clock.c | 98 | ||||
-rw-r--r-- | arch/arm/plat-samsung/include/plat/clock.h | 3 | ||||
-rw-r--r-- | arch/arm/plat-samsung/pwm-clock.c | 10 | ||||
-rw-r--r-- | arch/arm/plat-samsung/time.c | 2 |
4 files changed, 21 insertions, 92 deletions
diff --git a/arch/arm/plat-samsung/clock.c b/arch/arm/plat-samsung/clock.c index 772892826ffc..aecf9e90d4fc 100644 --- a/arch/arm/plat-samsung/clock.c +++ b/arch/arm/plat-samsung/clock.c @@ -71,74 +71,6 @@ static int clk_null_enable(struct clk *clk, int enable) return 0; } -static int dev_is_s3c_uart(struct device *dev) -{ - struct platform_device **pdev = s3c24xx_uart_devs; - int i; - for (i = 0; i < ARRAY_SIZE(s3c24xx_uart_devs); i++, pdev++) - if (*pdev && dev == &(*pdev)->dev) - return 1; - return 0; -} - -/* - * Serial drivers call get_clock() very early, before platform bus - * has been set up, this requires a special check to let them get - * a proper clock - */ - -static int dev_is_platform_device(struct device *dev) -{ - return dev->bus == &platform_bus_type || - (dev->bus == NULL && dev_is_s3c_uart(dev)); -} - -/* Clock API calls */ - -struct clk *clk_get(struct device *dev, const char *id) -{ - struct clk *p; - struct clk *clk = ERR_PTR(-ENOENT); - int idno; - - if (dev == NULL || !dev_is_platform_device(dev)) - idno = -1; - else - idno = to_platform_device(dev)->id; - - spin_lock(&clocks_lock); - - list_for_each_entry(p, &clocks, list) { - if (p->id == idno && - strcmp(id, p->name) == 0 && - try_module_get(p->owner)) { - clk = p; - break; - } - } - - /* check for the case where a device was supplied, but the - * clock that was being searched for is not device specific */ - - if (IS_ERR(clk)) { - list_for_each_entry(p, &clocks, list) { - if (p->id == -1 && strcmp(id, p->name) == 0 && - try_module_get(p->owner)) { - clk = p; - break; - } - } - } - - spin_unlock(&clocks_lock); - return clk; -} - -void clk_put(struct clk *clk) -{ - module_put(clk->owner); -} - int clk_enable(struct clk *clk) { if (IS_ERR(clk) || clk == NULL) @@ -241,8 +173,6 @@ int clk_set_parent(struct clk *clk, struct clk *parent) return ret; } -EXPORT_SYMBOL(clk_get); -EXPORT_SYMBOL(clk_put); EXPORT_SYMBOL(clk_enable); EXPORT_SYMBOL(clk_disable); EXPORT_SYMBOL(clk_get_rate); @@ -265,7 +195,6 @@ struct clk_ops clk_ops_def_setrate = { struct clk clk_xtal = { .name = "xtal", - .id = -1, .rate = 0, .parent = NULL, .ctrlbit = 0, @@ -273,30 +202,25 @@ struct clk clk_xtal = { struct clk clk_ext = { .name = "ext", - .id = -1, }; struct clk clk_epll = { .name = "epll", - .id = -1, }; struct clk clk_mpll = { .name = "mpll", - .id = -1, .ops = &clk_ops_def_setrate, }; struct clk clk_upll = { .name = "upll", - .id = -1, .parent = NULL, .ctrlbit = 0, }; struct clk clk_f = { .name = "fclk", - .id = -1, .rate = 0, .parent = &clk_mpll, .ctrlbit = 0, @@ -304,7 +228,6 @@ struct clk clk_f = { struct clk clk_h = { .name = "hclk", - .id = -1, .rate = 0, .parent = NULL, .ctrlbit = 0, @@ -313,7 +236,6 @@ struct clk clk_h = { struct clk clk_p = { .name = "pclk", - .id = -1, .rate = 0, .parent = NULL, .ctrlbit = 0, @@ -322,7 +244,6 @@ struct clk clk_p = { struct clk clk_usb_bus = { .name = "usb-bus", - .id = -1, .rate = 0, .parent = &clk_upll, }; @@ -330,7 +251,6 @@ struct clk clk_usb_bus = { struct clk s3c24xx_uclk = { .name = "uclk", - .id = -1, }; /* initialise the clock system */ @@ -346,14 +266,11 @@ int s3c24xx_register_clock(struct clk *clk) if (clk->enable == NULL) clk->enable = clk_null_enable; - /* add to the list of available clocks */ - - /* Quick check to see if this clock has already been registered. */ - BUG_ON(clk->list.prev != clk->list.next); - - spin_lock(&clocks_lock); - list_add(&clk->list, &clocks); - spin_unlock(&clocks_lock); + /* fill up the clk_lookup structure and register it*/ + clk->lookup.dev_id = clk->devname; + clk->lookup.con_id = clk->name; + clk->lookup.clk = clk; + clkdev_add(&clk->lookup); return 0; } @@ -463,10 +380,7 @@ static int clk_debugfs_register_one(struct clk *c) char s[255]; char *p = s; - p += sprintf(p, "%s", c->name); - - if (c->id >= 0) - sprintf(p, ":%d", c->id); + p += sprintf(p, "%s", c->devname); d = debugfs_create_dir(s, pa ? pa->dent : clk_debugfs_root); if (!d) diff --git a/arch/arm/plat-samsung/include/plat/clock.h b/arch/arm/plat-samsung/include/plat/clock.h index 983c578b8276..87d5b38a86fb 100644 --- a/arch/arm/plat-samsung/include/plat/clock.h +++ b/arch/arm/plat-samsung/include/plat/clock.h @@ -10,6 +10,7 @@ */ #include <linux/spinlock.h> +#include <linux/clkdev.h> struct clk; @@ -40,6 +41,7 @@ struct clk { struct module *owner; struct clk *parent; const char *name; + const char *devname; int id; int usage; unsigned long rate; @@ -47,6 +49,7 @@ struct clk { struct clk_ops *ops; int (*enable)(struct clk *, int enable); + struct clk_lookup lookup; #if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS) struct dentry *dent; /* For visible tree hierarchy */ #endif diff --git a/arch/arm/plat-samsung/pwm-clock.c b/arch/arm/plat-samsung/pwm-clock.c index 46c9381e083b..f1bba88ed2f5 100644 --- a/arch/arm/plat-samsung/pwm-clock.c +++ b/arch/arm/plat-samsung/pwm-clock.c @@ -268,6 +268,7 @@ static struct pwm_tdiv_clk clk_timer_tdiv[] = { [0] = { .clk = { .name = "pwm-tdiv", + .devname = "s3c24xx-pwm.0", .ops = &clk_tdiv_ops, .parent = &clk_timer_scaler[0], }, @@ -275,6 +276,7 @@ static struct pwm_tdiv_clk clk_timer_tdiv[] = { [1] = { .clk = { .name = "pwm-tdiv", + .devname = "s3c24xx-pwm.1", .ops = &clk_tdiv_ops, .parent = &clk_timer_scaler[0], } @@ -282,6 +284,7 @@ static struct pwm_tdiv_clk clk_timer_tdiv[] = { [2] = { .clk = { .name = "pwm-tdiv", + .devname = "s3c24xx-pwm.2", .ops = &clk_tdiv_ops, .parent = &clk_timer_scaler[1], }, @@ -289,6 +292,7 @@ static struct pwm_tdiv_clk clk_timer_tdiv[] = { [3] = { .clk = { .name = "pwm-tdiv", + .devname = "s3c24xx-pwm.3", .ops = &clk_tdiv_ops, .parent = &clk_timer_scaler[1], }, @@ -296,6 +300,7 @@ static struct pwm_tdiv_clk clk_timer_tdiv[] = { [4] = { .clk = { .name = "pwm-tdiv", + .devname = "s3c24xx-pwm.4", .ops = &clk_tdiv_ops, .parent = &clk_timer_scaler[1], }, @@ -361,26 +366,31 @@ static struct clk_ops clk_tin_ops = { static struct clk clk_tin[] = { [0] = { .name = "pwm-tin", + .devname = "s3c24xx-pwm.0", .id = 0, .ops = &clk_tin_ops, }, [1] = { .name = "pwm-tin", + .devname = "s3c24xx-pwm.1", .id = 1, .ops = &clk_tin_ops, }, [2] = { .name = "pwm-tin", + .devname = "s3c24xx-pwm.2", .id = 2, .ops = &clk_tin_ops, }, [3] = { .name = "pwm-tin", + .devname = "s3c24xx-pwm.3", .id = 3, .ops = &clk_tin_ops, }, [4] = { .name = "pwm-tin", + .devname = "s3c24xx-pwm.4", .id = 4, .ops = &clk_tin_ops, }, diff --git a/arch/arm/plat-samsung/time.c b/arch/arm/plat-samsung/time.c index 2231d80ad817..e3bb806bbafe 100644 --- a/arch/arm/plat-samsung/time.c +++ b/arch/arm/plat-samsung/time.c @@ -259,6 +259,8 @@ static void __init s3c2410_timer_resources(void) clk_enable(timerclk); if (!use_tclk1_12()) { + tmpdev.id = 4; + tmpdev.dev.init_name = "s3c24xx-pwm.4"; tin = clk_get(&tmpdev.dev, "pwm-tin"); if (IS_ERR(tin)) panic("failed to get pwm-tin clock for system timer"); |