diff options
Diffstat (limited to 'arch/arm/mach-exynos/clock-exynos4210.c')
-rw-r--r-- | arch/arm/mach-exynos/clock-exynos4210.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/clock-exynos4210.c b/arch/arm/mach-exynos/clock-exynos4210.c new file mode 100644 index 000000000000..b9d5ef670eb4 --- /dev/null +++ b/arch/arm/mach-exynos/clock-exynos4210.c @@ -0,0 +1,139 @@ +/* + * linux/arch/arm/mach-exynos4/clock-exynos4210.c + * + * Copyright (c) 2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * EXYNOS4210 - Clock support + * + * 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/kernel.h> +#include <linux/err.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/syscore_ops.h> + +#include <plat/cpu-freq.h> +#include <plat/clock.h> +#include <plat/cpu.h> +#include <plat/pll.h> +#include <plat/s5p-clock.h> +#include <plat/clock-clksrc.h> +#include <plat/exynos4.h> +#include <plat/pm.h> + +#include <mach/hardware.h> +#include <mach/map.h> +#include <mach/regs-clock.h> +#include <mach/exynos4-clock.h> + +static struct sleep_save exynos4210_clock_save[] = { + SAVE_ITEM(S5P_CLKSRC_IMAGE), + SAVE_ITEM(S5P_CLKSRC_LCD1), + SAVE_ITEM(S5P_CLKDIV_IMAGE), + SAVE_ITEM(S5P_CLKDIV_LCD1), + SAVE_ITEM(S5P_CLKSRC_MASK_LCD1), + SAVE_ITEM(S5P_CLKGATE_IP_IMAGE_4210), + SAVE_ITEM(S5P_CLKGATE_IP_LCD1), + SAVE_ITEM(S5P_CLKGATE_IP_PERIR_4210), +}; + +static struct clksrc_clk *sysclks[] = { + /* nothing here yet */ +}; + +static int exynos4_clksrc_mask_lcd1_ctrl(struct clk *clk, int enable) +{ + return s5p_gatectrl(S5P_CLKSRC_MASK_LCD1, clk, enable); +} + +static struct clksrc_clk clksrcs[] = { + { + .clk = { + .name = "sclk_sata", + .id = -1, + .enable = exynos4_clksrc_mask_fsys_ctrl, + .ctrlbit = (1 << 24), + }, + .sources = &clkset_mout_corebus, + .reg_src = { .reg = S5P_CLKSRC_FSYS, .shift = 24, .size = 1 }, + .reg_div = { .reg = S5P_CLKDIV_FSYS0, .shift = 20, .size = 4 }, + }, { + .clk = { + .name = "sclk_fimd", + .devname = "exynos4-fb.1", + .enable = exynos4_clksrc_mask_lcd1_ctrl, + .ctrlbit = (1 << 0), + }, + .sources = &clkset_group, + .reg_src = { .reg = S5P_CLKSRC_LCD1, .shift = 0, .size = 4 }, + .reg_div = { .reg = S5P_CLKDIV_LCD1, .shift = 0, .size = 4 }, + }, +}; + +static struct clk init_clocks_off[] = { + { + .name = "sataphy", + .id = -1, + .parent = &clk_aclk_133.clk, + .enable = exynos4_clk_ip_fsys_ctrl, + .ctrlbit = (1 << 3), + }, { + .name = "sata", + .id = -1, + .parent = &clk_aclk_133.clk, + .enable = exynos4_clk_ip_fsys_ctrl, + .ctrlbit = (1 << 10), + }, { + .name = "fimd", + .devname = "exynos4-fb.1", + .enable = exynos4_clk_ip_lcd1_ctrl, + .ctrlbit = (1 << 0), + }, +}; + +#ifdef CONFIG_PM_SLEEP +static int exynos4210_clock_suspend(void) +{ + s3c_pm_do_save(exynos4210_clock_save, ARRAY_SIZE(exynos4210_clock_save)); + + return 0; +} + +static void exynos4210_clock_resume(void) +{ + s3c_pm_do_restore_core(exynos4210_clock_save, ARRAY_SIZE(exynos4210_clock_save)); +} + +#else +#define exynos4210_clock_suspend NULL +#define exynos4210_clock_resume NULL +#endif + +struct syscore_ops exynos4210_clock_syscore_ops = { + .suspend = exynos4210_clock_suspend, + .resume = exynos4210_clock_resume, +}; + +void __init exynos4210_register_clocks(void) +{ + int ptr; + + clk_mout_mpll.reg_src.reg = S5P_CLKSRC_CPU; + clk_mout_mpll.reg_src.shift = 8; + clk_mout_mpll.reg_src.size = 1; + + for (ptr = 0; ptr < ARRAY_SIZE(sysclks); ptr++) + s3c_register_clksrc(sysclks[ptr], 1); + + s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs)); + + s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off)); + s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off)); + + register_syscore_ops(&exynos4210_clock_syscore_ops); +} |