diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-integrator/clock.c | 80 | ||||
| -rw-r--r-- | arch/arm/mach-integrator/clock.h | 25 | ||||
| -rw-r--r-- | arch/arm/mach-integrator/core.c | 35 | ||||
| -rw-r--r-- | arch/arm/mach-integrator/impd1.c | 26 | ||||
| -rw-r--r-- | arch/arm/mach-integrator/include/mach/clkdev.h | 25 | ||||
| -rw-r--r-- | arch/arm/mach-integrator/integrator_cp.c | 18 |
7 files changed, 91 insertions, 119 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index d4fcf3009c3..f1ac3937365 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -210,6 +210,7 @@ config ARCH_INTEGRATOR bool "ARM Ltd. Integrator family" select ARM_AMBA select HAVE_CLK + select COMMON_CLKDEV select ICST525 help Support for ARM's Integrator platform. diff --git a/arch/arm/mach-integrator/clock.c b/arch/arm/mach-integrator/clock.c index 8d761fdd2ec..989ecf5f5c4 100644 --- a/arch/arm/mach-integrator/clock.c +++ b/arch/arm/mach-integrator/clock.c @@ -10,42 +10,12 @@ */ #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 <asm/hardware/icst525.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); +#include <asm/clkdev.h> +#include <mach/clkdev.h> int clk_enable(struct clk *clk) { @@ -67,7 +37,6 @@ EXPORT_SYMBOL(clk_get_rate); long clk_round_rate(struct clk *clk, unsigned long rate) { struct icst525_vco vco; - vco = icst525_khz_to_vco(clk->params, rate / 1000); return icst525_khz(clk->params, vco) * 1000; } @@ -76,56 +45,15 @@ EXPORT_SYMBOL(clk_round_rate); int clk_set_rate(struct clk *clk, unsigned long rate) { int ret = -EIO; + if (clk->setvco) { struct icst525_vco vco; vco = icst525_khz_to_vco(clk->params, rate / 1000); clk->rate = icst525_khz(clk->params, vco) * 1000; - - printk("Clock %s: setting VCO reg params: S=%d R=%d V=%d\n", - clk->name, vco.s, vco.r, vco.v); - clk->setvco(clk, vco); ret = 0; } - return 0; + return ret; } EXPORT_SYMBOL(clk_set_rate); - -/* - * These are fixed clocks. - */ -static struct clk kmi_clk = { - .name = "KMIREFCLK", - .rate = 24000000, -}; - -static struct clk uart_clk = { - .name = "UARTCLK", - .rate = 14745600, -}; - -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) -{ - clk_register(&kmi_clk); - clk_register(&uart_clk); - return 0; -} -arch_initcall(clk_init); diff --git a/arch/arm/mach-integrator/clock.h b/arch/arm/mach-integrator/clock.h index 09e6328ceba..e69de29bb2d 100644 --- a/arch/arm/mach-integrator/clock.h +++ b/arch/arm/mach-integrator/clock.h @@ -1,25 +0,0 @@ -/* - * linux/arch/arm/mach-integrator/clock.h - * - * Copyright (C) 2004 ARM Limited. - * Written by Deep Blue Solutions Limited. - * - * 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 icst525_params; - -struct clk { - struct list_head node; - unsigned long rate; - struct module *owner; - const char *name; - const struct icst525_params *params; - void *data; - void (*setvco)(struct clk *, struct icst525_vco vco); -}; - -int clk_register(struct clk *clk); -void clk_unregister(struct clk *clk); diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c index 595b7392ee4..c89c949b4d4 100644 --- a/arch/arm/mach-integrator/core.c +++ b/arch/arm/mach-integrator/core.c @@ -21,6 +21,8 @@ #include <linux/amba/serial.h> #include <linux/io.h> +#include <asm/clkdev.h> +#include <mach/clkdev.h> #include <mach/hardware.h> #include <asm/irq.h> #include <asm/hardware/arm_timer.h> @@ -108,10 +110,43 @@ static struct amba_device *amba_devs[] __initdata = { &kmi1_device, }; +/* + * These are fixed clocks. + */ +static struct clk clk24mhz = { + .rate = 24000000, +}; + +static struct clk uartclk = { + .rate = 14745600, +}; + +static struct clk_lookup lookups[] __initdata = { + { /* UART0 */ + .dev_id = "mb:16", + .clk = &uartclk, + }, { /* UART1 */ + .dev_id = "mb:17", + .clk = &uartclk, + }, { /* KMI0 */ + .dev_id = "mb:18", + .clk = &clk24mhz, + }, { /* KMI1 */ + .dev_id = "mb:19", + .clk = &clk24mhz, + }, { /* MMCI - IntegratorCP */ + .dev_id = "mb:1c", + .clk = &uartclk, + } +}; + static int __init integrator_init(void) { int i; + for (i = 0; i < ARRAY_SIZE(lookups); i++) + clkdev_add(&lookups[i]); + 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-integrator/impd1.c b/arch/arm/mach-integrator/impd1.c index 172299a7830..0058c937719 100644 --- a/arch/arm/mach-integrator/impd1.c +++ b/arch/arm/mach-integrator/impd1.c @@ -22,13 +22,13 @@ #include <linux/amba/clcd.h> #include <linux/io.h> +#include <asm/clkdev.h> +#include <mach/clkdev.h> #include <asm/hardware/icst525.h> #include <mach/lm.h> #include <mach/impd1.h> #include <asm/sizes.h> -#include "clock.h" - static int module_id; module_param_named(lmid, module_id, int, 0444); @@ -37,6 +37,7 @@ MODULE_PARM_DESC(lmid, "logic module stack position"); struct impd1_module { void __iomem *base; struct clk vcos[2]; + struct clk_lookup *clks[3]; }; static const struct icst525_params impd1_vco_params = { @@ -339,9 +340,8 @@ static struct impd1_device impd1_devs[] = { } }; -static const char *impd1_vconames[2] = { - "CLCDCLK", - "AUXVCO2", +static struct clk fixed_14745600 = { + .rate = 14745600, }; static int impd1_probe(struct lm_device *dev) @@ -374,14 +374,20 @@ static int impd1_probe(struct lm_device *dev) for (i = 0; i < ARRAY_SIZE(impd1->vcos); i++) { impd1->vcos[i].owner = THIS_MODULE, - impd1->vcos[i].name = impd1_vconames[i], impd1->vcos[i].params = &impd1_vco_params, impd1->vcos[i].data = impd1, impd1->vcos[i].setvco = impd1_setvco; - - clk_register(&impd1->vcos[i]); } + impd1->clks[0] = clkdev_alloc(&impd1->vcos[0], NULL, "lm%x:01000", + dev->id); + impd1->clks[1] = clkdev_alloc(&fixed_14745600, NULL, "lm%x:00100", + dev->id); + impd1->clks[2] = clkdev_alloc(&fixed_14745600, NULL, "lm%x:00200", + dev->id); + for (i = 0; i < ARRAY_SIZE(impd1->clks); i++) + clkdev_add(impd1->clks[i]); + for (i = 0; i < ARRAY_SIZE(impd1_devs); i++) { struct impd1_device *idev = impd1_devs + i; struct amba_device *d; @@ -434,8 +440,8 @@ static void impd1_remove(struct lm_device *dev) device_for_each_child(&dev->dev, NULL, impd1_remove_one); - for (i = 0; i < ARRAY_SIZE(impd1->vcos); i++) - clk_unregister(&impd1->vcos[i]); + for (i = 0; i < ARRAY_SIZE(impd1->clks); i++) + clkdev_drop(impd1->clks[i]); lm_set_drvdata(dev, NULL); diff --git a/arch/arm/mach-integrator/include/mach/clkdev.h b/arch/arm/mach-integrator/include/mach/clkdev.h new file mode 100644 index 00000000000..9293e410832 --- /dev/null +++ b/arch/arm/mach-integrator/include/mach/clkdev.h @@ -0,0 +1,25 @@ +#ifndef __ASM_MACH_CLKDEV_H +#define __ASM_MACH_CLKDEV_H + +#include <linux/module.h> +#include <asm/hardware/icst525.h> + +struct clk { + unsigned long rate; + struct module *owner; + const struct icst525_params *params; + void *data; + void (*setvco)(struct clk *, struct icst525_vco vco); +}; + +static inline int __clk_get(struct clk *clk) +{ + return try_module_get(clk->owner); +} + +static inline void __clk_put(struct clk *clk) +{ + module_put(clk->owner); +} + +#endif diff --git a/arch/arm/mach-integrator/integrator_cp.c b/arch/arm/mach-integrator/integrator_cp.c index 88026ccd5ac..427c2d8dc12 100644 --- a/arch/arm/mach-integrator/integrator_cp.c +++ b/arch/arm/mach-integrator/integrator_cp.c @@ -21,6 +21,8 @@ #include <linux/amba/clcd.h> #include <linux/io.h> +#include <asm/clkdev.h> +#include <mach/clkdev.h> #include <mach/hardware.h> #include <asm/irq.h> #include <asm/setup.h> @@ -38,7 +40,6 @@ #include <asm/mach/time.h> #include "common.h" -#include "clock.h" #define INTCP_PA_MMC_BASE 0x1c000000 #define INTCP_PA_AACI_BASE 0x1d000000 @@ -289,15 +290,16 @@ static void cp_auxvco_set(struct clk *clk, struct icst525_vco vco) writel(0, CM_LOCK); } -static struct clk cp_clcd_clk = { - .name = "CLCDCLK", +static struct clk cp_auxclk = { .params = &cp_auxvco_params, .setvco = cp_auxvco_set, }; -static struct clk cp_mmci_clk = { - .name = "MCLK", - .rate = 14745600, +static struct clk_lookup cp_lookups[] = { + { /* CLCD */ + .dev_id = "mb:c0", + .clk = &cp_auxclk, + }, }; /* @@ -554,8 +556,8 @@ static void __init intcp_init(void) { int i; - clk_register(&cp_clcd_clk); - clk_register(&cp_mmci_clk); + for (i = 0; i < ARRAY_SIZE(cp_lookups); i++) + clkdev_add(&cp_lookups[i]); platform_add_devices(intcp_devs, ARRAY_SIZE(intcp_devs)); |