1 files changed, 172 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c24xx/clock-s3c2416.c b/arch/arm/mach-s3c24xx/clock-s3c2416.c
new file mode 100644
index 00000000000..dbc9ab4aaca
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/clock-s3c2416.c
@@ -0,0 +1,172 @@
+/* linux/arch/arm/mach-s3c2416/clock.c
+ *
+ * Copyright (c) 2010 Simtec Electronics
+ * Copyright (c) 2010 Ben Dooks <ben-linux@fluff.org>
+ *
+ * S3C2416 Clock control support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/init.h>
+#include <linux/clk.h>
+
+#include <plat/s3c2416.h>
+#include <plat/clock.h>
+#include <plat/clock-clksrc.h>
+#include <plat/cpu.h>
+
+#include <plat/cpu-freq.h>
+#include <plat/pll.h>
+
+#include <asm/mach/map.h>
+
+#include <mach/regs-clock.h>
+#include <mach/regs-s3c2443-clock.h>
+
+/* armdiv
+ *
+ * this clock is sourced from msysclk and can have a number of
+ * divider values applied to it to then be fed into armclk.
+ * The real clock definition is done in s3c2443-clock.c,
+ * only the armdiv divisor table must be defined here.
+*/
+
+static unsigned int armdiv[8] = {
+	[0] = 1,
+	[1] = 2,
+	[2] = 3,
+	[3] = 4,
+	[5] = 6,
+	[7] = 8,
+};
+
+static struct clksrc_clk hsspi_eplldiv = {
+	.clk = {
+		.name	= "hsspi-eplldiv",
+		.parent	= &clk_esysclk.clk,
+		.ctrlbit = (1 << 14),
+		.enable = s3c2443_clkcon_enable_s,
+	},
+	.reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 24 },
+};
+
+static struct clk *hsspi_sources[] = {
+	[0] = &hsspi_eplldiv.clk,
+	[1] = NULL, /* to fix */
+};
+
+static struct clksrc_clk hsspi_mux = {
+	.clk	= {
+		.name	= "hsspi-if",
+	},
+	.sources = &(struct clksrc_sources) {
+		.sources = hsspi_sources,
+		.nr_sources = ARRAY_SIZE(hsspi_sources),
+	},
+	.reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 18 },
+};
+
+static struct clksrc_clk hsmmc_div[] = {
+	[0] = {
+		.clk = {
+			.name	= "hsmmc-div",
+			.devname	= "s3c-sdhci.0",
+			.parent	= &clk_esysclk.clk,
+		},
+		.reg_div = { .reg = S3C2416_CLKDIV2, .size = 2, .shift = 6 },
+	},
+	[1] = {
+		.clk = {
+			.name	= "hsmmc-div",
+			.devname	= "s3c-sdhci.1",
+			.parent	= &clk_esysclk.clk,
+		},
+		.reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 6 },
+	},
+};
+
+static struct clksrc_clk hsmmc_mux0 = {
+	.clk	= {
+		.name		= "hsmmc-if",
+		.devname	= "s3c-sdhci.0",
+		.ctrlbit	= (1 << 6),
+		.enable		= s3c2443_clkcon_enable_s,
+	},
+	.sources	= &(struct clksrc_sources) {
+		.nr_sources	= 2,
+		.sources	= (struct clk * []) {
+			[0]	= &hsmmc_div[0].clk,
+			[1]	= NULL, /* to fix */
+		},
+	},
+	.reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 16 },
+};
+
+static struct clksrc_clk hsmmc_mux1 = {
+	.clk	= {
+		.name		= "hsmmc-if",
+		.devname	= "s3c-sdhci.1",
+		.ctrlbit	= (1 << 12),
+		.enable		= s3c2443_clkcon_enable_s,
+	},
+	.sources	= &(struct clksrc_sources) {
+		.nr_sources	= 2,
+		.sources	= (struct clk * []) {
+			[0]	= &hsmmc_div[1].clk,
+			[1]	= NULL, /* to fix */
+		},
+	},
+	.reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 17 },
+};
+
+static struct clk hsmmc0_clk = {
+	.name		= "hsmmc",
+	.devname	= "s3c-sdhci.0",
+	.parent		= &clk_h,
+	.enable		= s3c2443_clkcon_enable_h,
+	.ctrlbit	= S3C2416_HCLKCON_HSMMC0,
+};
+
+static struct clksrc_clk *clksrcs[] __initdata = {
+	&hsspi_eplldiv,
+	&hsspi_mux,
+	&hsmmc_div[0],
+	&hsmmc_div[1],
+	&hsmmc_mux0,
+	&hsmmc_mux1,
+};
+
+static struct clk_lookup s3c2416_clk_lookup[] = {
+	CLKDEV_INIT("s3c-sdhci.0", "mmc_busclk.0", &hsmmc0_clk),
+	CLKDEV_INIT("s3c-sdhci.0", "mmc_busclk.2", &hsmmc_mux0.clk),
+	CLKDEV_INIT("s3c-sdhci.1", "mmc_busclk.2", &hsmmc_mux1.clk),
+};
+
+void __init s3c2416_init_clocks(int xtal)
+{
+	u32 epllcon = __raw_readl(S3C2443_EPLLCON);
+	u32 epllcon1 = __raw_readl(S3C2443_EPLLCON+4);
+	int ptr;
+
+	/* s3c2416 EPLL compatible with s3c64xx */
+	clk_epll.rate = s3c_get_pll6553x(xtal, epllcon, epllcon1);
+
+	clk_epll.parent = &clk_epllref.clk;
+
+	s3c2443_common_init_clocks(xtal, s3c2416_get_pll,
+				   armdiv, ARRAY_SIZE(armdiv),
+				   S3C2416_CLKDIV0_ARMDIV_MASK);
+
+	for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
+		s3c_register_clksrc(clksrcs[ptr], 1);
+
+	s3c24xx_register_clock(&hsmmc0_clk);
+	clkdev_add_table(s3c2416_clk_lookup, ARRAY_SIZE(s3c2416_clk_lookup));
+
+	s3c_pwmclk_init();
+
+}