ARM: S5PV210: Add clock support for S5PV210

This patch adds clock support for S5PV210. This patch adds the clock
register definitions and the various system clocks in S5PV210.
Clocks that are common to other S5P SoC'c are added in the common
S5P clock support.
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

arch/arm/mach-s5pv210/Makefile

@@ -12,7 +12,7 @@ obj-				:=
 
 # Core support for S5PV210 system
 
-obj-$(CONFIG_CPU_S5PV210)	+= cpu.o init.o
+obj-$(CONFIG_CPU_S5PV210)	+= cpu.o init.o clock.o
 
 # machine support
 

arch/arm/mach-s5pv210/include/mach/pwm-clock.h

+/* linux/arch/arm/mach-s5pv210/include/mach/pwm-clock.h
+ *
+ * Copyright 2008 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      http://armlinux.simtec.co.uk/
+ *
+ * Copyright (c) 2009 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * Based on arch/arm/plat-s3c24xx/include/mach/pwm-clock.h
+ *
+ * S5PV210 - pwm clock and timer 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.
+*/
+
+#ifndef __ASM_ARCH_PWMCLK_H
+#define __ASM_ARCH_PWMCLK_H __FILE__
+
+/**
+ * pwm_cfg_src_is_tclk() - return whether the given mux config is a tclk
+ * @cfg: The timer TCFG1 register bits shifted down to 0.
+ *
+ * Return true if the given configuration from TCFG1 is a TCLK instead
+ * any of the TDIV clocks.
+ */
+static inline int pwm_cfg_src_is_tclk(unsigned long tcfg)
+{
+	return tcfg == S3C2410_TCFG1_MUX_TCLK;
+}
+
+/**
+ * tcfg_to_divisor() - convert tcfg1 setting to a divisor
+ * @tcfg1: The tcfg1 setting, shifted down.
+ *
+ * Get the divisor value for the given tcfg1 setting. We assume the
+ * caller has already checked to see if this is not a TCLK source.
+ */
+static inline unsigned long tcfg_to_divisor(unsigned long tcfg1)
+{
+	return 1 << (1 + tcfg1);
+}
+
+/**
+ * pwm_tdiv_has_div1() - does the tdiv setting have a /1
+ *
+ * Return true if we have a /1 in the tdiv setting.
+ */
+static inline unsigned int pwm_tdiv_has_div1(void)
+{
+	return 0;
+}
+
+/**
+ * pwm_tdiv_div_bits() - calculate TCFG1 divisor value.
+ * @div: The divisor to calculate the bit information for.
+ *
+ * Turn a divisor into the necessary bit field for TCFG1.
+ */
+static inline unsigned long pwm_tdiv_div_bits(unsigned int div)
+{
+	return ilog2(div) - 1;
+}
+
+#define S3C_TCFG1_MUX_TCLK S3C2410_TCFG1_MUX_TCLK
+
+#endif /* __ASM_ARCH_PWMCLK_H */

arch/arm/mach-s5pv210/include/mach/regs-clock.h

+/* linux/arch/arm/mach-s5pv210/include/mach/regs-clock.h
+ *
+ * Copyright (c) 2010 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * S5PV210 - Clock register definitions
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_REGS_CLOCK_H
+#define __ASM_ARCH_REGS_CLOCK_H __FILE__
+
+#include <mach/map.h>
+
+#define S5P_CLKREG(x)		(S3C_VA_SYS + (x))
+
+#define S5P_APLL_LOCK		S5P_CLKREG(0x00)
+#define S5P_MPLL_LOCK		S5P_CLKREG(0x08)
+#define S5P_EPLL_LOCK		S5P_CLKREG(0x10)
+#define S5P_VPLL_LOCK		S5P_CLKREG(0x20)
+
+#define S5P_APLL_CON		S5P_CLKREG(0x100)
+#define S5P_MPLL_CON		S5P_CLKREG(0x108)
+#define S5P_EPLL_CON		S5P_CLKREG(0x110)
+#define S5P_VPLL_CON		S5P_CLKREG(0x120)
+
+#define S5P_CLK_SRC0		S5P_CLKREG(0x200)
+#define S5P_CLK_SRC1		S5P_CLKREG(0x204)
+#define S5P_CLK_SRC2		S5P_CLKREG(0x208)
+#define S5P_CLK_SRC3		S5P_CLKREG(0x20C)
+#define S5P_CLK_SRC4		S5P_CLKREG(0x210)
+#define S5P_CLK_SRC5		S5P_CLKREG(0x214)
+#define S5P_CLK_SRC6		S5P_CLKREG(0x218)
+
+#define S5P_CLK_SRC_MASK0	S5P_CLKREG(0x280)
+#define S5P_CLK_SRC_MASK1	S5P_CLKREG(0x284)
+
+#define S5P_CLK_DIV0		S5P_CLKREG(0x300)
+#define S5P_CLK_DIV1		S5P_CLKREG(0x304)
+#define S5P_CLK_DIV2		S5P_CLKREG(0x308)
+#define S5P_CLK_DIV3		S5P_CLKREG(0x30C)
+#define S5P_CLK_DIV4		S5P_CLKREG(0x310)
+#define S5P_CLK_DIV5		S5P_CLKREG(0x314)
+#define S5P_CLK_DIV6		S5P_CLKREG(0x318)
+#define S5P_CLK_DIV7		S5P_CLKREG(0x31C)
+
+#define S5P_CLKGATE_MAIN0	S5P_CLKREG(0x400)
+#define S5P_CLKGATE_MAIN1	S5P_CLKREG(0x404)
+#define S5P_CLKGATE_MAIN2	S5P_CLKREG(0x408)
+
+#define S5P_CLKGATE_PERI0	S5P_CLKREG(0x420)
+#define S5P_CLKGATE_PERI1	S5P_CLKREG(0x424)
+
+#define S5P_CLKGATE_SCLK0	S5P_CLKREG(0x440)
+#define S5P_CLKGATE_SCLK1	S5P_CLKREG(0x444)
+#define S5P_CLKGATE_IP0		S5P_CLKREG(0x460)
+#define S5P_CLKGATE_IP1		S5P_CLKREG(0x464)
+#define S5P_CLKGATE_IP2		S5P_CLKREG(0x468)
+#define S5P_CLKGATE_IP3		S5P_CLKREG(0x46C)
+#define S5P_CLKGATE_IP4		S5P_CLKREG(0x470)
+
+#define S5P_CLKGATE_BLOCK	S5P_CLKREG(0x480)
+#define S5P_CLKGATE_BUS0	S5P_CLKREG(0x484)
+#define S5P_CLKGATE_BUS1	S5P_CLKREG(0x488)
+#define S5P_CLK_OUT		S5P_CLKREG(0x500)
+
+/* CLKSRC0 */
+#define S5P_CLKSRC0_MUX200_MASK		(0x1<<16)
+#define S5P_CLKSRC0_MUX166_MASK		(0x1<<20)
+#define S5P_CLKSRC0_MUX133_MASK		(0x1<<24)
+
+/* CLKDIV0 */
+#define S5P_CLKDIV0_APLL_SHIFT		(0)
+#define S5P_CLKDIV0_APLL_MASK		(0x7 << S5P_CLKDIV0_APLL_SHIFT)
+#define S5P_CLKDIV0_A2M_SHIFT		(4)
+#define S5P_CLKDIV0_A2M_MASK		(0x7 << S5P_CLKDIV0_A2M_SHIFT)
+#define S5P_CLKDIV0_HCLK200_SHIFT	(8)
+#define S5P_CLKDIV0_HCLK200_MASK	(0x7 << S5P_CLKDIV0_HCLK200_SHIFT)
+#define S5P_CLKDIV0_PCLK100_SHIFT	(12)
+#define S5P_CLKDIV0_PCLK100_MASK	(0x7 << S5P_CLKDIV0_PCLK100_SHIFT)
+#define S5P_CLKDIV0_HCLK166_SHIFT	(16)
+#define S5P_CLKDIV0_HCLK166_MASK	(0xF << S5P_CLKDIV0_HCLK166_SHIFT)
+#define S5P_CLKDIV0_PCLK83_SHIFT	(20)
+#define S5P_CLKDIV0_PCLK83_MASK		(0x7 << S5P_CLKDIV0_PCLK83_SHIFT)
+#define S5P_CLKDIV0_HCLK133_SHIFT	(24)
+#define S5P_CLKDIV0_HCLK133_MASK	(0xF << S5P_CLKDIV0_HCLK133_SHIFT)
+#define S5P_CLKDIV0_PCLK66_SHIFT	(28)
+#define S5P_CLKDIV0_PCLK66_MASK		(0x7 << S5P_CLKDIV0_PCLK66_SHIFT)
+
+/* Registers related to power management */
+#define S5P_PWR_CFG		S5P_CLKREG(0xC000)
+#define S5P_EINT_WAKEUP_MASK	S5P_CLKREG(0xC004)
+#define S5P_WAKEUP_MASK 	S5P_CLKREG(0xC008)
+#define S5P_PWR_MODE		S5P_CLKREG(0xC00C)
+#define S5P_NORMAL_CFG		S5P_CLKREG(0xC010)
+#define S5P_IDLE_CFG		S5P_CLKREG(0xC020)
+#define S5P_STOP_CFG		S5P_CLKREG(0xC030)
+#define S5P_STOP_MEM_CFG	S5P_CLKREG(0xC034)
+#define S5P_SLEEP_CFG		S5P_CLKREG(0xC040)
+
+#define S5P_OSC_FREQ		S5P_CLKREG(0xC100)
+#define S5P_OSC_STABLE		S5P_CLKREG(0xC104)
+#define S5P_PWR_STABLE		S5P_CLKREG(0xC108)
+#define S5P_MTC_STABLE		S5P_CLKREG(0xC110)
+#define S5P_CLAMP_STABLE	S5P_CLKREG(0xC114)
+
+#define S5P_WAKEUP_STAT		S5P_CLKREG(0xC200)
+#define S5P_BLK_PWR_STAT	S5P_CLKREG(0xC204)
+
+#define S5P_OTHERS		S5P_CLKREG(0xE000)
+#define S5P_OM_STAT		S5P_CLKREG(0xE100)
+#define S5P_USB_PHY_CONTROL	S5P_CLKREG(0xE80C)
+#define S5P_DAC_CONTROL		S5P_CLKREG(0xE810)
+
+#define S5P_INFORM0		S5P_CLKREG(0xF000)
+#define S5P_INFORM1		S5P_CLKREG(0xF004)
+#define S5P_INFORM2		S5P_CLKREG(0xF008)
+#define S5P_INFORM3		S5P_CLKREG(0xF00C)
+#define S5P_INFORM4		S5P_CLKREG(0xF010)
+#define S5P_INFORM5		S5P_CLKREG(0xF014)
+#define S5P_INFORM6		S5P_CLKREG(0xF018)
+#define S5P_INFORM7		S5P_CLKREG(0xF01C)
+
+#define S5P_RST_STAT		S5P_CLKREG(0xA000)
+#define S5P_OSC_CON		S5P_CLKREG(0x8000)
+#define S5P_MIPI_PHY_CON0	S5P_CLKREG(0x7200)
+#define S5P_MIPI_PHY_CON1	S5P_CLKREG(0x7204)
+#define S5P_MIPI_CONTROL	S5P_CLKREG(0xE814)
+
+#define S5P_IDLE_CFG_TL_MASK	(3 << 30)
+#define S5P_IDLE_CFG_TM_MASK	(3 << 28)
+#define S5P_IDLE_CFG_TL_ON	(2 << 30)
+#define S5P_IDLE_CFG_TM_ON	(2 << 28)
+#define S5P_IDLE_CFG_DIDLE	(1 << 0)
+
+#define S5P_CFG_WFI_CLEAN		(~(3 << 8))
+#define S5P_CFG_WFI_IDLE		(1 << 8)
+#define S5P_CFG_WFI_STOP		(2 << 8)
+#define S5P_CFG_WFI_SLEEP		(3 << 8)
+
+#define S5P_OTHER_SYS_INT		24
+#define S5P_OTHER_STA_TYPE		23
+#define S5P_OTHER_SYSC_INTOFF		(1 << 0)
+#define STA_TYPE_EXPON			0
+#define STA_TYPE_SFR			1
+
+#define S5P_PWR_STA_EXP_SCALE		0
+#define S5P_PWR_STA_CNT			4
+
+#define S5P_PWR_STABLE_COUNT		85500
+
+#define S5P_SLEEP_CFG_OSC_EN		(1 << 0)
+#define S5P_SLEEP_CFG_USBOSC_EN		(1 << 1)
+
+/* OTHERS Resgister */
+#define S5P_OTHERS_USB_SIG_MASK		(1 << 16)
+#define S5P_OTHERS_MIPI_DPHY_EN		(1 << 28)
+
+/* MIPI */
+#define S5P_MIPI_DPHY_EN		(3)
+
+/* S5P_DAC_CONTROL */
+#define S5P_DAC_ENABLE			(1)
+#define S5P_DAC_DISABLE			(0)
+
+#endif /* __ASM_ARCH_REGS_CLOCK_H */

arch/arm/mach-s5pv210/include/mach/tick.h

+/* linux/arch/arm/mach-s5pv210/include/mach/tick.h
+ *
+ * Copyright (c) 2009 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com/
+ *
+ * Based on arch/arm/mach-s3c6400/include/mach/tick.h
+ *
+ * S5PV210 - Timer tick support definitions
+ *
+ * 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.
+*/
+
+#ifndef __ASM_ARCH_TICK_H
+#define __ASM_ARCH_TICK_H __FILE__
+
+static inline u32 s3c24xx_ostimer_pending(void)
+{
+	u32 pend = __raw_readl(VA_VIC0 + VIC_RAW_STATUS);
+	return pend & (1 << (IRQ_TIMER4_VIC - S5P_IRQ_VIC0(0)));
+}
+
+#define TICK_MAX	(0xffffffff)
+
+#endif /* __ASM_ARCH_TICK_H */

arch/arm/plat-s5p/clock.c

@@ -33,6 +33,12 @@ struct clk clk_ext_xtal_mux = {
 	.id		= -1,
 };
 
+static struct clk s5p_clk_27m = {
+	.name		= "clk_27m",
+	.id		= -1,
+	.rate		= 27000000,
+};
+
 /* 48MHz USB Phy clock output */
 struct clk clk_48m = {
 	.name		= "clk_48m",
@@ -104,6 +110,11 @@ struct clksrc_sources clk_src_epll = {
 	.nr_sources	= ARRAY_SIZE(clk_src_epll_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;
@@ -118,10 +129,12 @@ int s5p_gatectrl(void __iomem *reg, struct clk *clk, int enable)
 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_arm,
+	&clk_vpll,
 };
 
 void __init s5p_register_clocks(unsigned long xtal_freq)

arch/arm/plat-s5p/include/plat/s5p-clock.h

@@ -20,6 +20,7 @@
 #define clk_fin_apll clk_ext_xtal_mux
 #define clk_fin_mpll clk_ext_xtal_mux
 #define clk_fin_epll clk_ext_xtal_mux
+#define clk_fin_vpll clk_ext_xtal_mux
 
 extern struct clk clk_ext_xtal_mux;
 extern struct clk clk_48m;
@@ -27,6 +28,7 @@ extern struct clk clk_fout_apll;
 extern struct clk clk_fout_mpll;
 extern struct clk clk_fout_epll;
 extern struct clk clk_arm;
+extern struct clk clk_vpll;
 
 extern struct clksrc_sources clk_src_apll;
 extern struct clksrc_sources clk_src_mpll;