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author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-11-30 17:46:52 +0000 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-11-30 17:46:52 +0000 |
commit | 112243034cec7c3ef0499fdebf39218714da453d (patch) | |
tree | f6469eaab26ea2e985da32b5cc297ddb9c64f952 /arch/arm | |
parent | 773e9610a7bd44720b8b625d01997b2953edc2db (diff) | |
parent | ee569c43e340202fb0ba427c57b77568a32b9a3a (diff) | |
download | kernel_samsung_smdk4412-112243034cec7c3ef0499fdebf39218714da453d.zip kernel_samsung_smdk4412-112243034cec7c3ef0499fdebf39218714da453d.tar.gz kernel_samsung_smdk4412-112243034cec7c3ef0499fdebf39218714da453d.tar.bz2 |
Merge branch 'clks' into devel
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/Kconfig | 1 | ||||
-rw-r--r-- | arch/arm/mach-aaec2000/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-aaec2000/clock.c | 99 | ||||
-rw-r--r-- | arch/arm/mach-aaec2000/clock.h | 23 | ||||
-rw-r--r-- | arch/arm/mach-aaec2000/core.c | 29 | ||||
-rw-r--r-- | arch/arm/mach-ep93xx/clock.c | 68 | ||||
-rw-r--r-- | arch/arm/mach-ep93xx/include/mach/clkdev.h | 7 | ||||
-rw-r--r-- | arch/arm/mach-lh7a40x/clocks.c | 92 | ||||
-rw-r--r-- | arch/arm/mach-netx/fb.c | 7 |
9 files changed, 61 insertions, 267 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 29759cd..131b712 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -271,6 +271,7 @@ config ARCH_EP93XX select ARM_VIC select GENERIC_GPIO select HAVE_CLK + select COMMON_CLKDEV select ARCH_REQUIRE_GPIOLIB help This enables support for the Cirrus EP93xx series of CPUs. diff --git a/arch/arm/mach-aaec2000/Makefile b/arch/arm/mach-aaec2000/Makefile index a8e462f..20ec838 100644 --- a/arch/arm/mach-aaec2000/Makefile +++ b/arch/arm/mach-aaec2000/Makefile @@ -3,7 +3,7 @@ # # Common support (must be linked before board specific support) -obj-y += core.o clock.o +obj-y += core.o # Specific board support obj-$(CONFIG_MACH_AAED2000) += aaed2000.o diff --git a/arch/arm/mach-aaec2000/clock.c b/arch/arm/mach-aaec2000/clock.c deleted file mode 100644 index e10ee15..0000000 --- a/arch/arm/mach-aaec2000/clock.c +++ /dev/null @@ -1,99 +0,0 @@ -/* - * linux/arch/arm/mach-aaec2000/clock.c - * - * Copyright (C) 2005 Nicolas Bellido Y Ortega - * - * Based on linux/arch/arm/mach-integrator/clock.c - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/list.h> -#include <linux/errno.h> -#include <linux/err.h> -#include <linux/string.h> -#include <linux/clk.h> -#include <linux/mutex.h> - -#include "clock.h" - -static LIST_HEAD(clocks); -static DEFINE_MUTEX(clocks_mutex); - -struct clk *clk_get(struct device *dev, const char *id) -{ - struct clk *p, *clk = ERR_PTR(-ENOENT); - - mutex_lock(&clocks_mutex); - list_for_each_entry(p, &clocks, node) { - if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) { - clk = p; - break; - } - } - mutex_unlock(&clocks_mutex); - - return clk; -} -EXPORT_SYMBOL(clk_get); - -void clk_put(struct clk *clk) -{ - module_put(clk->owner); -} -EXPORT_SYMBOL(clk_put); - -int clk_enable(struct clk *clk) -{ - return 0; -} -EXPORT_SYMBOL(clk_enable); - -void clk_disable(struct clk *clk) -{ -} -EXPORT_SYMBOL(clk_disable); - -unsigned long clk_get_rate(struct clk *clk) -{ - return clk->rate; -} -EXPORT_SYMBOL(clk_get_rate); - -long clk_round_rate(struct clk *clk, unsigned long rate) -{ - return rate; -} -EXPORT_SYMBOL(clk_round_rate); - -int clk_set_rate(struct clk *clk, unsigned long rate) -{ - return 0; -} -EXPORT_SYMBOL(clk_set_rate); - -int clk_register(struct clk *clk) -{ - mutex_lock(&clocks_mutex); - list_add(&clk->node, &clocks); - mutex_unlock(&clocks_mutex); - return 0; -} -EXPORT_SYMBOL(clk_register); - -void clk_unregister(struct clk *clk) -{ - mutex_lock(&clocks_mutex); - list_del(&clk->node); - mutex_unlock(&clocks_mutex); -} -EXPORT_SYMBOL(clk_unregister); - -static int __init clk_init(void) -{ - return 0; -} -arch_initcall(clk_init); diff --git a/arch/arm/mach-aaec2000/clock.h b/arch/arm/mach-aaec2000/clock.h deleted file mode 100644 index d4bb74f..0000000 --- a/arch/arm/mach-aaec2000/clock.h +++ /dev/null @@ -1,23 +0,0 @@ -/* - * linux/arch/arm/mach-aaec2000/clock.h - * - * Copyright (C) 2005 Nicolas Bellido Y Ortega - * - * Based on linux/arch/arm/mach-integrator/clock.h - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -struct module; - -struct clk { - struct list_head node; - unsigned long rate; - struct module *owner; - const char *name; - void *data; -}; - -int clk_register(struct clk *clk); -void clk_unregister(struct clk *clk); diff --git a/arch/arm/mach-aaec2000/core.c b/arch/arm/mach-aaec2000/core.c index dfb26bc..50e1396 100644 --- a/arch/arm/mach-aaec2000/core.c +++ b/arch/arm/mach-aaec2000/core.c @@ -19,6 +19,7 @@ #include <linux/interrupt.h> #include <linux/timex.h> #include <linux/signal.h> +#include <linux/clk.h> #include <mach/hardware.h> #include <asm/irq.h> @@ -30,7 +31,6 @@ #include <asm/mach/map.h> #include "core.h" -#include "clock.h" /* * Common I/O mapping: @@ -229,9 +229,28 @@ static struct amba_device *amba_devs[] __initdata = { &clcd_device, }; -static struct clk aaec2000_clcd_clk = { - .name = "CLCDCLK", -}; +void clk_disable(struct clk *clk) +{ +} + +int clk_set_rate(struct clk *clk, unsigned long rate) +{ + return 0; +} + +int clk_enable(struct clk *clk) +{ + return 0; +} + +struct clk *clk_get(struct device *dev, const char *id) +{ + return dev && strcmp(dev_name(dev), "mb:16") == 0 ? NULL : ERR_PTR(-ENOENT); +} + +void clk_put(struct clk *clk) +{ +} void __init aaec2000_set_clcd_plat_data(struct aaec2000_clcd_info *clcd) { @@ -265,8 +284,6 @@ static int __init aaec2000_init(void) { int i; - clk_register(&aaec2000_clcd_clk); - for (i = 0; i < ARRAY_SIZE(amba_devs); i++) { struct amba_device *d = amba_devs[i]; amba_device_register(d, &iomem_resource); diff --git a/arch/arm/mach-ep93xx/clock.c b/arch/arm/mach-ep93xx/clock.c index 8c9f249..9604928 100644 --- a/arch/arm/mach-ep93xx/clock.c +++ b/arch/arm/mach-ep93xx/clock.c @@ -16,11 +16,12 @@ #include <linux/module.h> #include <linux/string.h> #include <linux/io.h> + +#include <asm/clkdev.h> #include <asm/div64.h> #include <mach/hardware.h> struct clk { - char *name; unsigned long rate; int users; u32 enable_reg; @@ -28,53 +29,33 @@ struct clk { }; static struct clk clk_uart = { - .name = "UARTCLK", .rate = 14745600, }; -static struct clk clk_pll1 = { - .name = "pll1", -}; -static struct clk clk_f = { - .name = "fclk", -}; -static struct clk clk_h = { - .name = "hclk", -}; -static struct clk clk_p = { - .name = "pclk", -}; -static struct clk clk_pll2 = { - .name = "pll2", -}; +static struct clk clk_pll1; +static struct clk clk_f; +static struct clk clk_h; +static struct clk clk_p; +static struct clk clk_pll2; static struct clk clk_usb_host = { - .name = "usb_host", .enable_reg = EP93XX_SYSCON_CLOCK_CONTROL, .enable_mask = EP93XX_SYSCON_CLOCK_USH_EN, }; - -static struct clk *clocks[] = { - &clk_uart, - &clk_pll1, - &clk_f, - &clk_h, - &clk_p, - &clk_pll2, - &clk_usb_host, +#define INIT_CK(dev,con,ck) \ + { .dev_id = dev, .con_id = con, .clk = ck } + +static struct clk_lookup clocks[] = { + INIT_CK("apb:uart1", NULL, &clk_uart), + INIT_CK("apb:uart2", NULL, &clk_uart), + INIT_CK("apb:uart3", NULL, &clk_uart), + INIT_CK(NULL, "pll1", &clk_pll1), + INIT_CK(NULL, "fclk", &clk_f), + INIT_CK(NULL, "hclk", &clk_h), + INIT_CK(NULL, "pclk", &clk_p), + INIT_CK(NULL, "pll2", &clk_pll2), + INIT_CK(NULL, "usb_host", &clk_usb_host), }; -struct clk *clk_get(struct device *dev, const char *id) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(clocks); i++) { - if (!strcmp(clocks[i]->name, id)) - return clocks[i]; - } - - return ERR_PTR(-ENOENT); -} -EXPORT_SYMBOL(clk_get); int clk_enable(struct clk *clk) { @@ -106,12 +87,6 @@ unsigned long clk_get_rate(struct clk *clk) } EXPORT_SYMBOL(clk_get_rate); -void clk_put(struct clk *clk) -{ -} -EXPORT_SYMBOL(clk_put); - - static char fclk_divisors[] = { 1, 2, 4, 8, 16, 1, 1, 1 }; static char hclk_divisors[] = { 1, 2, 4, 5, 6, 8, 16, 32 }; @@ -138,6 +113,7 @@ static unsigned long calc_pll_rate(u32 config_word) static int __init ep93xx_clock_init(void) { u32 value; + int i; value = __raw_readl(EP93XX_SYSCON_CLOCK_SET1); if (!(value & 0x00800000)) { /* PLL1 bypassed? */ @@ -165,6 +141,8 @@ static int __init ep93xx_clock_init(void) clk_f.rate / 1000000, clk_h.rate / 1000000, clk_p.rate / 1000000); + for (i = 0; i < ARRAY_SIZE(clocks); i++) + clkdev_add(&clocks[i]); return 0; } arch_initcall(ep93xx_clock_init); diff --git a/arch/arm/mach-ep93xx/include/mach/clkdev.h b/arch/arm/mach-ep93xx/include/mach/clkdev.h new file mode 100644 index 0000000..04b37a8 --- /dev/null +++ b/arch/arm/mach-ep93xx/include/mach/clkdev.h @@ -0,0 +1,7 @@ +#ifndef __ASM_MACH_CLKDEV_H +#define __ASM_MACH_CLKDEV_H + +#define __clk_get(clk) ({ 1; }) +#define __clk_put(clk) do { } while (0) + +#endif diff --git a/arch/arm/mach-lh7a40x/clocks.c b/arch/arm/mach-lh7a40x/clocks.c index 4fb23ac..6182f54 100644 --- a/arch/arm/mach-lh7a40x/clocks.c +++ b/arch/arm/mach-lh7a40x/clocks.c @@ -14,21 +14,14 @@ #include <linux/err.h> struct module; -struct icst525_params; struct clk { struct list_head node; unsigned long rate; struct module *owner; const char *name; -// void *data; -// const struct icst525_params *params; -// void (*setvco)(struct clk *, struct icst525_vco vco); }; -int clk_register(struct clk *clk); -void clk_unregister(struct clk *clk); - /* ----- */ #define MAINDIV1(c) (((c) >> 7) & 0x0f) @@ -79,31 +72,15 @@ unsigned int pclkfreq_get (void) /* ----- */ -static LIST_HEAD(clocks); -static DECLARE_MUTEX(clocks_sem); - struct clk *clk_get (struct device *dev, const char *id) { - struct clk *p; - struct clk *clk = ERR_PTR(-ENOENT); - - down (&clocks_sem); - list_for_each_entry (p, &clocks, node) { - if (strcmp (id, p->name) == 0 - && try_module_get(p->owner)) { - clk = p; - break; - } - } - up (&clocks_sem); - - return clk; + return dev && strcmp(dev_name(dev), "cldc-lh7a40x") == 0 + ? NULL : ERR_PTR(-ENOENT); } EXPORT_SYMBOL(clk_get); void clk_put (struct clk *clk) { - module_put(clk->owner); } EXPORT_SYMBOL(clk_put); @@ -118,20 +95,9 @@ void clk_disable (struct clk *clk) } EXPORT_SYMBOL(clk_disable); -int clk_use (struct clk *clk) -{ - return 0; -} -EXPORT_SYMBOL(clk_use); - -void clk_unuse (struct clk *clk) -{ -} -EXPORT_SYMBOL(clk_unuse); - unsigned long clk_get_rate (struct clk *clk) { - return clk->rate; + return 0; } EXPORT_SYMBOL(clk_get_rate); @@ -143,56 +109,6 @@ EXPORT_SYMBOL(clk_round_rate); int clk_set_rate (struct clk *clk, unsigned long rate) { - int ret = -EIO; - return ret; + return -EIO; } EXPORT_SYMBOL(clk_set_rate); - -#if 0 -/* - * These are fixed clocks. - */ -static struct clk kmi_clk = { - .name = "KMIREFCLK", - .rate = 24000000, -}; - -static struct clk uart_clk = { - .name = "UARTCLK", - .rate = 24000000, -}; - -static struct clk mmci_clk = { - .name = "MCLK", - .rate = 33000000, -}; -#endif - -static struct clk clcd_clk = { - .name = "CLCDCLK", - .rate = 0, -}; - -int clk_register (struct clk *clk) -{ - down (&clocks_sem); - list_add (&clk->node, &clocks); - up (&clocks_sem); - return 0; -} -EXPORT_SYMBOL(clk_register); - -void clk_unregister (struct clk *clk) -{ - down (&clocks_sem); - list_del (&clk->node); - up (&clocks_sem); -} -EXPORT_SYMBOL(clk_unregister); - -static int __init clk_init (void) -{ - clk_register(&clcd_clk); - return 0; -} -arch_initcall(clk_init); diff --git a/arch/arm/mach-netx/fb.c b/arch/arm/mach-netx/fb.c index 24c7965..8f1f992 100644 --- a/arch/arm/mach-netx/fb.c +++ b/arch/arm/mach-netx/fb.c @@ -22,14 +22,11 @@ #include <linux/dma-mapping.h> #include <linux/amba/bus.h> #include <linux/amba/clcd.h> +#include <linux/err.h> #include <mach/netx-regs.h> #include <mach/hardware.h> -struct clk {}; - -static struct clk fb_clk; - static struct clcd_panel *netx_panel; void netx_clcd_enable(struct clcd_fb *fb) @@ -85,7 +82,7 @@ int clk_enable(struct clk *clk) struct clk *clk_get(struct device *dev, const char *id) { - return &fb_clk; + return dev && strcmp(dev_name(dev), "fb") == 0 ? NULL : ERR_PTR(-ENOENT); } void clk_put(struct clk *clk) |