From: Kukjin Kim Date: Mon, 16 Apr 2012 04:13:29 +0000 (-0700) Subject: ARM: SAMSUNG: move clock part for common s5p into plat-samsung X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bf46aaeacf728dad9d89ed3d604bf991035dfd77;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git ARM: SAMSUNG: move clock part for common s5p into plat-samsung Signed-off-by: Kukjin Kim --- diff --git a/arch/arm/plat-s5p/Makefile b/arch/arm/plat-s5p/Makefile index 4953d50707be..83152108af3d 100644 --- a/arch/arm/plat-s5p/Makefile +++ b/arch/arm/plat-s5p/Makefile @@ -12,7 +12,6 @@ obj- := # Core files -obj-y += clock.o obj-y += irq.o obj-$(CONFIG_S5P_EXT_INT) += irq-eint.o obj-$(CONFIG_S5P_GPIO_INT) += irq-gpioint.o diff --git a/arch/arm/plat-s5p/clock.c b/arch/arm/plat-s5p/clock.c deleted file mode 100644 index f68a9bb11948..000000000000 --- a/arch/arm/plat-s5p/clock.c +++ /dev/null @@ -1,264 +0,0 @@ -/* linux/arch/arm/plat-s5p/clock.c - * - * Copyright 2009 Samsung Electronics Co., Ltd. - * http://www.samsung.com/ - * - * S5P - Common 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#include -#include -#include - -/* fin_apll, fin_mpll and fin_epll are all the same clock, which we call - * clk_ext_xtal_mux. -*/ -struct clk clk_ext_xtal_mux = { - .name = "ext_xtal", - .id = -1, -}; - -struct clk clk_xusbxti = { - .name = "xusbxti", - .id = -1, -}; - -struct clk s5p_clk_27m = { - .name = "clk_27m", - .id = -1, - .rate = 27000000, -}; - -/* 48MHz USB Phy clock output */ -struct clk clk_48m = { - .name = "clk_48m", - .id = -1, - .rate = 48000000, -}; - -/* APLL clock output - * No need .ctrlbit, this is always on -*/ -struct clk clk_fout_apll = { - .name = "fout_apll", - .id = -1, -}; - -/* BPLL clock output */ - -struct clk clk_fout_bpll = { - .name = "fout_bpll", - .id = -1, -}; - -/* CPLL clock output */ - -struct clk clk_fout_cpll = { - .name = "fout_cpll", - .id = -1, -}; - -/* MPLL clock output - * No need .ctrlbit, this is always on -*/ -struct clk clk_fout_mpll = { - .name = "fout_mpll", - .id = -1, -}; - -/* EPLL clock output */ -struct clk clk_fout_epll = { - .name = "fout_epll", - .id = -1, - .ctrlbit = (1 << 31), -}; - -/* DPLL clock output */ -struct clk clk_fout_dpll = { - .name = "fout_dpll", - .id = -1, - .ctrlbit = (1 << 31), -}; - -/* VPLL clock output */ -struct clk clk_fout_vpll = { - .name = "fout_vpll", - .id = -1, - .ctrlbit = (1 << 31), -}; - -/* Possible clock sources for APLL Mux */ -static struct clk *clk_src_apll_list[] = { - [0] = &clk_fin_apll, - [1] = &clk_fout_apll, -}; - -struct clksrc_sources clk_src_apll = { - .sources = clk_src_apll_list, - .nr_sources = ARRAY_SIZE(clk_src_apll_list), -}; - -/* Possible clock sources for BPLL Mux */ -static struct clk *clk_src_bpll_list[] = { - [0] = &clk_fin_bpll, - [1] = &clk_fout_bpll, -}; - -struct clksrc_sources clk_src_bpll = { - .sources = clk_src_bpll_list, - .nr_sources = ARRAY_SIZE(clk_src_bpll_list), -}; - -/* Possible clock sources for CPLL Mux */ -static struct clk *clk_src_cpll_list[] = { - [0] = &clk_fin_cpll, - [1] = &clk_fout_cpll, -}; - -struct clksrc_sources clk_src_cpll = { - .sources = clk_src_cpll_list, - .nr_sources = ARRAY_SIZE(clk_src_cpll_list), -}; - -/* Possible clock sources for MPLL Mux */ -static struct clk *clk_src_mpll_list[] = { - [0] = &clk_fin_mpll, - [1] = &clk_fout_mpll, -}; - -struct clksrc_sources clk_src_mpll = { - .sources = clk_src_mpll_list, - .nr_sources = ARRAY_SIZE(clk_src_mpll_list), -}; - -/* Possible clock sources for EPLL Mux */ -static struct clk *clk_src_epll_list[] = { - [0] = &clk_fin_epll, - [1] = &clk_fout_epll, -}; - -struct clksrc_sources clk_src_epll = { - .sources = clk_src_epll_list, - .nr_sources = ARRAY_SIZE(clk_src_epll_list), -}; - -/* Possible clock sources for DPLL Mux */ -static struct clk *clk_src_dpll_list[] = { - [0] = &clk_fin_dpll, - [1] = &clk_fout_dpll, -}; - -struct clksrc_sources clk_src_dpll = { - .sources = clk_src_dpll_list, - .nr_sources = ARRAY_SIZE(clk_src_dpll_list), -}; - -struct clk clk_vpll = { - .name = "vpll", - .id = -1, -}; - -int s5p_gatectrl(void __iomem *reg, struct clk *clk, int enable) -{ - unsigned int ctrlbit = clk->ctrlbit; - u32 con; - - con = __raw_readl(reg); - con = enable ? (con | ctrlbit) : (con & ~ctrlbit); - __raw_writel(con, reg); - return 0; -} - -int s5p_epll_enable(struct clk *clk, int enable) -{ - unsigned int ctrlbit = clk->ctrlbit; - unsigned int epll_con = __raw_readl(S5P_EPLL_CON) & ~ctrlbit; - - if (enable) - __raw_writel(epll_con | ctrlbit, S5P_EPLL_CON); - else - __raw_writel(epll_con, S5P_EPLL_CON); - - return 0; -} - -unsigned long s5p_epll_get_rate(struct clk *clk) -{ - return clk->rate; -} - -int s5p_spdif_set_rate(struct clk *clk, unsigned long rate) -{ - struct clk *pclk; - int ret; - - pclk = clk_get_parent(clk); - if (IS_ERR(pclk)) - return -EINVAL; - - ret = pclk->ops->set_rate(pclk, rate); - clk_put(pclk); - - return ret; -} - -unsigned long s5p_spdif_get_rate(struct clk *clk) -{ - struct clk *pclk; - int rate; - - pclk = clk_get_parent(clk); - if (IS_ERR(pclk)) - return -EINVAL; - - rate = pclk->ops->get_rate(pclk); - clk_put(pclk); - - return rate; -} - -struct clk_ops s5p_sclk_spdif_ops = { - .set_rate = s5p_spdif_set_rate, - .get_rate = s5p_spdif_get_rate, -}; - -static struct clk *s5p_clks[] __initdata = { - &clk_ext_xtal_mux, - &clk_48m, - &s5p_clk_27m, - &clk_fout_apll, - &clk_fout_mpll, - &clk_fout_epll, - &clk_fout_dpll, - &clk_fout_vpll, - &clk_vpll, - &clk_xusbxti, -}; - -void __init s5p_register_clocks(unsigned long xtal_freq) -{ - int ret; - - clk_ext_xtal_mux.rate = xtal_freq; - - ret = s3c24xx_register_clocks(s5p_clks, ARRAY_SIZE(s5p_clks)); - if (ret > 0) - printk(KERN_ERR "Failed to register s5p clocks\n"); -} diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig index 71553f410016..3a48d9de22a8 100644 --- a/arch/arm/plat-samsung/Kconfig +++ b/arch/arm/plat-samsung/Kconfig @@ -58,6 +58,11 @@ config SAMSUNG_CLKSRC Select the clock code for the clksrc implementation used by newer systems such as the S3C64XX. +config S5P_CLOCK + def_bool (ARCH_S5P64X0 || ARCH_S5PC100 || ARCH_S5PV210 || ARCH_EXYNOS) + help + Support common clock part for ARCH_S5P and ARCH_EXYNOS SoCs + # options for IRQ support config SAMSUNG_IRQ_VIC_TIMER diff --git a/arch/arm/plat-samsung/Makefile b/arch/arm/plat-samsung/Makefile index 6012366f33cb..997ce1005700 100644 --- a/arch/arm/plat-samsung/Makefile +++ b/arch/arm/plat-samsung/Makefile @@ -17,6 +17,7 @@ obj-y += clock.o obj-y += pwm-clock.o obj-$(CONFIG_SAMSUNG_CLKSRC) += clock-clksrc.o +obj-$(CONFIG_S5P_CLOCK) += s5p-clock.o obj-$(CONFIG_SAMSUNG_IRQ_VIC_TIMER) += irq-vic-timer.o diff --git a/arch/arm/plat-samsung/s5p-clock.c b/arch/arm/plat-samsung/s5p-clock.c new file mode 100644 index 000000000000..41d3dfd5dddb --- /dev/null +++ b/arch/arm/plat-samsung/s5p-clock.c @@ -0,0 +1,263 @@ +/* + * Copyright 2009 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5P - Common 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include + +/* fin_apll, fin_mpll and fin_epll are all the same clock, which we call + * clk_ext_xtal_mux. +*/ +struct clk clk_ext_xtal_mux = { + .name = "ext_xtal", + .id = -1, +}; + +struct clk clk_xusbxti = { + .name = "xusbxti", + .id = -1, +}; + +struct clk s5p_clk_27m = { + .name = "clk_27m", + .id = -1, + .rate = 27000000, +}; + +/* 48MHz USB Phy clock output */ +struct clk clk_48m = { + .name = "clk_48m", + .id = -1, + .rate = 48000000, +}; + +/* APLL clock output + * No need .ctrlbit, this is always on +*/ +struct clk clk_fout_apll = { + .name = "fout_apll", + .id = -1, +}; + +/* BPLL clock output */ + +struct clk clk_fout_bpll = { + .name = "fout_bpll", + .id = -1, +}; + +/* CPLL clock output */ + +struct clk clk_fout_cpll = { + .name = "fout_cpll", + .id = -1, +}; + +/* MPLL clock output + * No need .ctrlbit, this is always on +*/ +struct clk clk_fout_mpll = { + .name = "fout_mpll", + .id = -1, +}; + +/* EPLL clock output */ +struct clk clk_fout_epll = { + .name = "fout_epll", + .id = -1, + .ctrlbit = (1 << 31), +}; + +/* DPLL clock output */ +struct clk clk_fout_dpll = { + .name = "fout_dpll", + .id = -1, + .ctrlbit = (1 << 31), +}; + +/* VPLL clock output */ +struct clk clk_fout_vpll = { + .name = "fout_vpll", + .id = -1, + .ctrlbit = (1 << 31), +}; + +/* Possible clock sources for APLL Mux */ +static struct clk *clk_src_apll_list[] = { + [0] = &clk_fin_apll, + [1] = &clk_fout_apll, +}; + +struct clksrc_sources clk_src_apll = { + .sources = clk_src_apll_list, + .nr_sources = ARRAY_SIZE(clk_src_apll_list), +}; + +/* Possible clock sources for BPLL Mux */ +static struct clk *clk_src_bpll_list[] = { + [0] = &clk_fin_bpll, + [1] = &clk_fout_bpll, +}; + +struct clksrc_sources clk_src_bpll = { + .sources = clk_src_bpll_list, + .nr_sources = ARRAY_SIZE(clk_src_bpll_list), +}; + +/* Possible clock sources for CPLL Mux */ +static struct clk *clk_src_cpll_list[] = { + [0] = &clk_fin_cpll, + [1] = &clk_fout_cpll, +}; + +struct clksrc_sources clk_src_cpll = { + .sources = clk_src_cpll_list, + .nr_sources = ARRAY_SIZE(clk_src_cpll_list), +}; + +/* Possible clock sources for MPLL Mux */ +static struct clk *clk_src_mpll_list[] = { + [0] = &clk_fin_mpll, + [1] = &clk_fout_mpll, +}; + +struct clksrc_sources clk_src_mpll = { + .sources = clk_src_mpll_list, + .nr_sources = ARRAY_SIZE(clk_src_mpll_list), +}; + +/* Possible clock sources for EPLL Mux */ +static struct clk *clk_src_epll_list[] = { + [0] = &clk_fin_epll, + [1] = &clk_fout_epll, +}; + +struct clksrc_sources clk_src_epll = { + .sources = clk_src_epll_list, + .nr_sources = ARRAY_SIZE(clk_src_epll_list), +}; + +/* Possible clock sources for DPLL Mux */ +static struct clk *clk_src_dpll_list[] = { + [0] = &clk_fin_dpll, + [1] = &clk_fout_dpll, +}; + +struct clksrc_sources clk_src_dpll = { + .sources = clk_src_dpll_list, + .nr_sources = ARRAY_SIZE(clk_src_dpll_list), +}; + +struct clk clk_vpll = { + .name = "vpll", + .id = -1, +}; + +int s5p_gatectrl(void __iomem *reg, struct clk *clk, int enable) +{ + unsigned int ctrlbit = clk->ctrlbit; + u32 con; + + con = __raw_readl(reg); + con = enable ? (con | ctrlbit) : (con & ~ctrlbit); + __raw_writel(con, reg); + return 0; +} + +int s5p_epll_enable(struct clk *clk, int enable) +{ + unsigned int ctrlbit = clk->ctrlbit; + unsigned int epll_con = __raw_readl(S5P_EPLL_CON) & ~ctrlbit; + + if (enable) + __raw_writel(epll_con | ctrlbit, S5P_EPLL_CON); + else + __raw_writel(epll_con, S5P_EPLL_CON); + + return 0; +} + +unsigned long s5p_epll_get_rate(struct clk *clk) +{ + return clk->rate; +} + +int s5p_spdif_set_rate(struct clk *clk, unsigned long rate) +{ + struct clk *pclk; + int ret; + + pclk = clk_get_parent(clk); + if (IS_ERR(pclk)) + return -EINVAL; + + ret = pclk->ops->set_rate(pclk, rate); + clk_put(pclk); + + return ret; +} + +unsigned long s5p_spdif_get_rate(struct clk *clk) +{ + struct clk *pclk; + int rate; + + pclk = clk_get_parent(clk); + if (IS_ERR(pclk)) + return -EINVAL; + + rate = pclk->ops->get_rate(pclk); + clk_put(pclk); + + return rate; +} + +struct clk_ops s5p_sclk_spdif_ops = { + .set_rate = s5p_spdif_set_rate, + .get_rate = s5p_spdif_get_rate, +}; + +static struct clk *s5p_clks[] __initdata = { + &clk_ext_xtal_mux, + &clk_48m, + &s5p_clk_27m, + &clk_fout_apll, + &clk_fout_mpll, + &clk_fout_epll, + &clk_fout_dpll, + &clk_fout_vpll, + &clk_vpll, + &clk_xusbxti, +}; + +void __init s5p_register_clocks(unsigned long xtal_freq) +{ + int ret; + + clk_ext_xtal_mux.rate = xtal_freq; + + ret = s3c24xx_register_clocks(s5p_clks, ARRAY_SIZE(s5p_clks)); + if (ret > 0) + printk(KERN_ERR "Failed to register s5p clocks\n"); +}