Audio Subsystem has own clocks for I2S0 and PCM0 in all EXYNOS series. This patch add clocks for I2S0 and PCM0 I/F. Signed-off-by: Sangsu Park <sangsu4u.park@xxxxxxxxxxx> --- arch/arm/mach-exynos/Makefile | 1 + arch/arm/mach-exynos/clock-audss.c | 68 ++++++++++++++++++++++++++++++++++++ 2 files changed, 69 insertions(+), 0 deletions(-) create mode 100644 arch/arm/mach-exynos/clock-audss.c diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile index 7e53a3a..5b6c7c0 100644 --- a/arch/arm/mach-exynos/Makefile +++ b/arch/arm/mach-exynos/Makefile @@ -13,6 +13,7 @@ obj- := # Core obj-$(CONFIG_ARCH_EXYNOS) += common.o +obj-$(CONFIG_ARCH_EXYNOS) += clock-audss.o obj-$(CONFIG_ARCH_EXYNOS4) += clock-exynos4.o obj-$(CONFIG_CPU_EXYNOS4210) += clock-exynos4210.o obj-$(CONFIG_SOC_EXYNOS4212) += clock-exynos4212.o diff --git a/arch/arm/mach-exynos/clock-audss.c b/arch/arm/mach-exynos/clock-audss.c new file mode 100644 index 0000000..31d01c3 --- /dev/null +++ b/arch/arm/mach-exynos/clock-audss.c @@ -0,0 +1,68 @@ +/* + * Copyright (c) 2013 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Clock support for EXYNOS Audio Subsystem + * + * 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/io.h> + +#include <plat/clock.h> +#include <plat/s5p-clock.h> + +#define EXYNOS_PA_AUDSS (0x03810000) + +/* IP Clock Gate 0 Registers */ +#define EXYNOS_AUDSS_CLKGATE_I2SBUS (1<<2) +#define EXYNOS_AUDSS_CLKGATE_I2SSPECIAL (1<<3) +#define EXYNOS_AUDSS_CLKGATE_PCMBUS (1<<4) +#define EXYNOS_AUDSS_CLKGATE_PCMSPECIAL (1<<5) +#define EXYNOS_AUDSS_CLKGATE_GPIO (1<<6) + +static void __iomem *clk_audss_base; + +static int exynos_clk_audss_ctrl(struct clk *clk, int enable) +{ + if (!clk_audss_base) + return -ENOMEM; + + return s5p_gatectrl(clk_audss_base, clk, enable); +} + +static struct clk exynos_init_audss_clocks[] = { + { + .name = "iis", + .devname = "samsung-i2s.0", + .enable = exynos_clk_audss_ctrl, + .ctrlbit = EXYNOS_AUDSS_CLKGATE_I2SSPECIAL + | EXYNOS_AUDSS_CLKGATE_I2SBUS + | EXYNOS_AUDSS_CLKGATE_GPIO, + }, { + .name = "pcm", + .devname = "samsung-pcm.0", + .enable = exynos_clk_audss_ctrl, + .ctrlbit = EXYNOS_AUDSS_CLKGATE_PCMSPECIAL + | EXYNOS_AUDSS_CLKGATE_PCMBUS + | EXYNOS_AUDSS_CLKGATE_GPIO, + }, +}; + +void __init exynos_register_audss_clocks(void) +{ + clk_audss_base = ioremap(EXYNOS_PA_AUDSS, SZ_4K); + if (clk_audss_base == NULL) { + pr_err("unable to ioremap for audss base\n"); + return; + } + + s3c_register_clocks(exynos_init_audss_clocks, + ARRAY_SIZE(exynos_init_audss_clocks)); + s3c_disable_clocks(exynos_init_audss_clocks, + ARRAY_SIZE(exynos_init_audss_clocks)); +} -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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