diff options
| -rw-r--r-- | arch/arm/mach-ux500/clock.c | 95 | ||||
| -rw-r--r-- | arch/arm/mach-ux500/include/mach/clkdev.h | 7 |
2 files changed, 102 insertions, 0 deletions
diff --git a/arch/arm/mach-ux500/clock.c b/arch/arm/mach-ux500/clock.c new file mode 100644 index 00000000000..20b6ebb6783 --- /dev/null +++ b/arch/arm/mach-ux500/clock.c @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2009 ST-Ericsson + * heavily based on realview platform + * + * 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/clk.h> +#include <linux/mutex.h> + +#include <asm/clkdev.h> + +/* currently the clk structure + * just supports rate. This would + * be extended as and when new devices are + * added - TODO + */ +struct clk { + unsigned long rate; +}; + +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) +{ + /*TODO*/ + return rate; +} +EXPORT_SYMBOL(clk_round_rate); + +int clk_set_rate(struct clk *clk, unsigned long rate) +{ + clk->rate = rate; + return 0; +} +EXPORT_SYMBOL(clk_set_rate); + +/* ssp clock */ +static struct clk ssp_clk = { + .rate = 48000000, +}; + +/* fixed clock */ +static struct clk f38_clk = { + .rate = 38400000, +}; + +static struct clk_lookup lookups[] = { + { + /* UART0 */ + .dev_id = "uart0", + .clk = &f38_clk, + }, { /* UART1 */ + .dev_id = "uart1", + .clk = &f38_clk, + }, { /* UART2 */ + .dev_id = "uart2", + .clk = &f38_clk, + }, { /* SSP */ + .dev_id = "pl022", + .clk = &ssp_clk, + } +}; + +static int __init clk_init(void) +{ + int i; + + /* register the clock lookups */ + for (i = 0; i < ARRAY_SIZE(lookups); i++) + clkdev_add(&lookups[i]); + return 0; +} +arch_initcall(clk_init); diff --git a/arch/arm/mach-ux500/include/mach/clkdev.h b/arch/arm/mach-ux500/include/mach/clkdev.h new file mode 100644 index 00000000000..04b37a89801 --- /dev/null +++ b/arch/arm/mach-ux500/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 |