ARM: S3C64XX: Remove old clock management code (66fcbe6b) · Commits · jan.koester / Linux

arch/arm/mach-s3c64xx/clock.c

deleted100644 → 0

+0 −1007

Original line number	Diff line number	Diff line
		/* linux/arch/arm/plat-s3c64xx/clock.c
		*
		* Copyright 2008 Openmoko, Inc.
		* Copyright 2008 Simtec Electronics
		* Ben Dooks <ben@simtec.co.uk>
		* http://armlinux.simtec.co.uk/
		*
		* S3C64XX Base 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/init.h>
		#include <linux/module.h>
		#include <linux/interrupt.h>
		#include <linux/ioport.h>
		#include <linux/clk.h>
		#include <linux/err.h>
		#include <linux/io.h>

		#include <mach/hardware.h>
		#include <mach/map.h>

		#include <mach/regs-clock.h>

		#include <plat/cpu.h>
		#include <plat/devs.h>
		#include <plat/cpu-freq.h>
		#include <plat/clock.h>
		#include <plat/clock-clksrc.h>
		#include <plat/pll.h>

		#include "regs-sys.h"

		/* fin_apll, fin_mpll and fin_epll are all the same clock, which we call
		* ext_xtal_mux for want of an actual name from the manual.
		*/

		static struct clk clk_ext_xtal_mux = {
		.name = "ext_xtal",
		};

		#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_fout_mpll clk_mpll
		#define clk_fout_epll clk_epll

		struct clk clk_h2 = {
		.name = "hclk2",
		.rate = 0,
		};

		struct clk clk_27m = {
		.name = "clk_27m",
		.rate = 27000000,
		};

		static int clk_48m_ctrl(struct clk *clk, int enable)
		{
		unsigned long flags;
		u32 val;

		/* can't rely on clock lock, this register has other usages */
		local_irq_save(flags);

		val = __raw_readl(S3C64XX_OTHERS);
		if (enable)
		val \|= S3C64XX_OTHERS_USBMASK;
		else
		val &= ~S3C64XX_OTHERS_USBMASK;

		__raw_writel(val, S3C64XX_OTHERS);
		local_irq_restore(flags);

		return 0;
		}

		struct clk clk_48m = {
		.name = "clk_48m",
		.rate = 48000000,
		.enable = clk_48m_ctrl,
		};

		struct clk clk_xusbxti = {
		.name = "xusbxti",
		.rate = 48000000,
		};

		static int inline s3c64xx_gate(void __iomem *reg,
		struct clk *clk,
		int enable)
		{
		unsigned int ctrlbit = clk->ctrlbit;
		u32 con;

		con = __raw_readl(reg);

		if (enable)
		con \|= ctrlbit;
		else
		con &= ~ctrlbit;

		__raw_writel(con, reg);
		return 0;
		}

		static int s3c64xx_pclk_ctrl(struct clk *clk, int enable)
		{
		return s3c64xx_gate(S3C_PCLK_GATE, clk, enable);
		}

		static int s3c64xx_hclk_ctrl(struct clk *clk, int enable)
		{
		return s3c64xx_gate(S3C_HCLK_GATE, clk, enable);
		}

		int s3c64xx_sclk_ctrl(struct clk *clk, int enable)
		{
		return s3c64xx_gate(S3C_SCLK_GATE, clk, enable);
		}

		static struct clk init_clocks_off[] = {
		{
		.name = "nand",
		.parent = &clk_h,
		}, {
		.name = "rtc",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_RTC,
		}, {
		.name = "adc",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_TSADC,
		}, {
		.name = "i2c",
		.devname = "s3c2440-i2c.0",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_IIC,
		}, {
		.name = "i2c",
		.devname = "s3c2440-i2c.1",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C6410_CLKCON_PCLK_I2C1,
		}, {
		.name = "keypad",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_KEYPAD,
		}, {
		.name = "spi",
		.devname = "s3c6410-spi.0",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_SPI0,
		}, {
		.name = "spi",
		.devname = "s3c6410-spi.1",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_SPI1,
		}, {
		.name = "48m",
		.devname = "s3c-sdhci.0",
		.parent = &clk_48m,
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_MMC0_48,
		}, {
		.name = "48m",
		.devname = "s3c-sdhci.1",
		.parent = &clk_48m,
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_MMC1_48,
		}, {
		.name = "48m",
		.devname = "s3c-sdhci.2",
		.parent = &clk_48m,
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_MMC2_48,
		}, {
		.name = "ac97",
		.parent = &clk_p,
		.ctrlbit = S3C_CLKCON_PCLK_AC97,
		}, {
		.name = "cfcon",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_IHOST,
		}, {
		.name = "dma0",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_DMA0,
		}, {
		.name = "dma1",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_DMA1,
		}, {
		.name = "3dse",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_3DSE,
		}, {
		.name = "hclk_secur",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_SECUR,
		}, {
		.name = "sdma1",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_SDMA1,
		}, {
		.name = "sdma0",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_SDMA0,
		}, {
		.name = "hclk_jpeg",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_JPEG,
		}, {
		.name = "camif",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_CAMIF,
		}, {
		.name = "hclk_scaler",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_SCALER,
		}, {
		.name = "2d",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_2D,
		}, {
		.name = "tv",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_TV,
		}, {
		.name = "post0",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_POST0,
		}, {
		.name = "rot",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_ROT,
		}, {
		.name = "hclk_mfc",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_MFC,
		}, {
		.name = "pclk_mfc",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_MFC,
		}, {
		.name = "dac27",
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_DAC27,
		}, {
		.name = "tv27",
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_TV27,
		}, {
		.name = "scaler27",
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_SCALER27,
		}, {
		.name = "sclk_scaler",
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_SCALER,
		}, {
		.name = "post0_27",
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_POST0_27,
		}, {
		.name = "secur",
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_SECUR,
		}, {
		.name = "sclk_mfc",
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_MFC,
		}, {
		.name = "sclk_jpeg",
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_JPEG,
		},
		};

		static struct clk clk_48m_spi0 = {
		.name = "spi_48m",
		.devname = "s3c6410-spi.0",
		.parent = &clk_48m,
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_SPI0_48,
		};

		static struct clk clk_48m_spi1 = {
		.name = "spi_48m",
		.devname = "s3c6410-spi.1",
		.parent = &clk_48m,
		.enable = s3c64xx_sclk_ctrl,
		.ctrlbit = S3C_CLKCON_SCLK_SPI1_48,
		};

		static struct clk clk_i2s0 = {
		.name = "iis",
		.devname = "samsung-i2s.0",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_IIS0,
		};

		static struct clk clk_i2s1 = {
		.name = "iis",
		.devname = "samsung-i2s.1",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_IIS1,
		};

		#ifdef CONFIG_CPU_S3C6410
		static struct clk clk_i2s2 = {
		.name = "iis",
		.devname = "samsung-i2s.2",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C6410_CLKCON_PCLK_IIS2,
		};
		#endif

		static struct clk init_clocks[] = {
		{
		.name = "lcd",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_LCD,
		}, {
		.name = "gpio",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_GPIO,
		}, {
		.name = "usb-host",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_UHOST,
		}, {
		.name = "otg",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_USB,
		}, {
		.name = "timers",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_PWM,
		}, {
		.name = "uart",
		.devname = "s3c6400-uart.0",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_UART0,
		}, {
		.name = "uart",
		.devname = "s3c6400-uart.1",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_UART1,
		}, {
		.name = "uart",
		.devname = "s3c6400-uart.2",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_UART2,
		}, {
		.name = "uart",
		.devname = "s3c6400-uart.3",
		.parent = &clk_p,
		.enable = s3c64xx_pclk_ctrl,
		.ctrlbit = S3C_CLKCON_PCLK_UART3,
		}, {
		.name = "watchdog",
		.parent = &clk_p,
		.ctrlbit = S3C_CLKCON_PCLK_WDT,
		},
		};

		static struct clk clk_hsmmc0 = {
		.name = "hsmmc",
		.devname = "s3c-sdhci.0",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_HSMMC0,
		};

		static struct clk clk_hsmmc1 = {
		.name = "hsmmc",
		.devname = "s3c-sdhci.1",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_HSMMC1,
		};

		static struct clk clk_hsmmc2 = {
		.name = "hsmmc",
		.devname = "s3c-sdhci.2",
		.parent = &clk_h,
		.enable = s3c64xx_hclk_ctrl,
		.ctrlbit = S3C_CLKCON_HCLK_HSMMC2,
		};

		static struct clk clk_fout_apll = {
		.name = "fout_apll",
		};

		static struct clk *clk_src_apll_list[] = {
		[0] = &clk_fin_apll,
		[1] = &clk_fout_apll,
		};

		static struct clksrc_sources clk_src_apll = {
		.sources = clk_src_apll_list,
		.nr_sources = ARRAY_SIZE(clk_src_apll_list),
		};

		static struct clksrc_clk clk_mout_apll = {
		.clk = {
		.name = "mout_apll",
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 0, .size = 1 },
		.sources = &clk_src_apll,
		};

		static struct clk *clk_src_epll_list[] = {
		[0] = &clk_fin_epll,
		[1] = &clk_fout_epll,
		};

		static struct clksrc_sources clk_src_epll = {
		.sources = clk_src_epll_list,
		.nr_sources = ARRAY_SIZE(clk_src_epll_list),
		};

		static struct clksrc_clk clk_mout_epll = {
		.clk = {
		.name = "mout_epll",
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 2, .size = 1 },
		.sources = &clk_src_epll,
		};

		static struct clk *clk_src_mpll_list[] = {
		[0] = &clk_fin_mpll,
		[1] = &clk_fout_mpll,
		};

		static struct clksrc_sources clk_src_mpll = {
		.sources = clk_src_mpll_list,
		.nr_sources = ARRAY_SIZE(clk_src_mpll_list),
		};

		static struct clksrc_clk clk_mout_mpll = {
		.clk = {
		.name = "mout_mpll",
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 1, .size = 1 },
		.sources = &clk_src_mpll,
		};

		static unsigned int armclk_mask;

		static unsigned long s3c64xx_clk_arm_get_rate(struct clk *clk)
		{
		unsigned long rate = clk_get_rate(clk->parent);
		u32 clkdiv;

		/* divisor mask starts at bit0, so no need to shift */
		clkdiv = __raw_readl(S3C_CLK_DIV0) & armclk_mask;

		return rate / (clkdiv + 1);
		}

		static unsigned long s3c64xx_clk_arm_round_rate(struct clk *clk,
		unsigned long rate)
		{
		unsigned long parent = clk_get_rate(clk->parent);
		u32 div;

		if (parent < rate)
		return parent;

		div = (parent / rate) - 1;
		if (div > armclk_mask)
		div = armclk_mask;

		return parent / (div + 1);
		}

		static int s3c64xx_clk_arm_set_rate(struct clk *clk, unsigned long rate)
		{
		unsigned long parent = clk_get_rate(clk->parent);
		u32 div;
		u32 val;

		if (rate < parent / (armclk_mask + 1))
		return -EINVAL;

		rate = clk_round_rate(clk, rate);
		div = clk_get_rate(clk->parent) / rate;

		val = __raw_readl(S3C_CLK_DIV0);
		val &= ~armclk_mask;
		val \|= (div - 1);
		__raw_writel(val, S3C_CLK_DIV0);

		return 0;

		}

		static struct clk clk_arm = {
		.name = "armclk",
		.parent = &clk_mout_apll.clk,
		.ops = &(struct clk_ops) {
		.get_rate = s3c64xx_clk_arm_get_rate,
		.set_rate = s3c64xx_clk_arm_set_rate,
		.round_rate = s3c64xx_clk_arm_round_rate,
		},
		};

		static unsigned long s3c64xx_clk_doutmpll_get_rate(struct clk *clk)
		{
		unsigned long rate = clk_get_rate(clk->parent);

		printk(KERN_DEBUG "%s: parent is %ld\n", __func__, rate);

		if (__raw_readl(S3C_CLK_DIV0) & S3C6400_CLKDIV0_MPLL_MASK)
		rate /= 2;

		return rate;
		}

		static struct clk_ops clk_dout_ops = {
		.get_rate = s3c64xx_clk_doutmpll_get_rate,
		};

		static struct clk clk_dout_mpll = {
		.name = "dout_mpll",
		.parent = &clk_mout_mpll.clk,
		.ops = &clk_dout_ops,
		};

		static struct clk *clkset_spi_mmc_list[] = {
		&clk_mout_epll.clk,
		&clk_dout_mpll,
		&clk_fin_epll,
		&clk_27m,
		};

		static struct clksrc_sources clkset_spi_mmc = {
		.sources = clkset_spi_mmc_list,
		.nr_sources = ARRAY_SIZE(clkset_spi_mmc_list),
		};

		static struct clk *clkset_irda_list[] = {
		&clk_mout_epll.clk,
		&clk_dout_mpll,
		NULL,
		&clk_27m,
		};

		static struct clksrc_sources clkset_irda = {
		.sources = clkset_irda_list,
		.nr_sources = ARRAY_SIZE(clkset_irda_list),
		};

		static struct clk *clkset_uart_list[] = {
		&clk_mout_epll.clk,
		&clk_dout_mpll,
		NULL,
		NULL
		};

		static struct clksrc_sources clkset_uart = {
		.sources = clkset_uart_list,
		.nr_sources = ARRAY_SIZE(clkset_uart_list),
		};

		static struct clk *clkset_uhost_list[] = {
		&clk_48m,
		&clk_mout_epll.clk,
		&clk_dout_mpll,
		&clk_fin_epll,
		};

		static struct clksrc_sources clkset_uhost = {
		.sources = clkset_uhost_list,
		.nr_sources = ARRAY_SIZE(clkset_uhost_list),
		};

		/* The peripheral clocks are all controlled via clocksource followed
		* by an optional divider and gate stage. We currently roll this into
		* one clock which hides the intermediate clock from the mux.
		*
		* Note, the JPEG clock can only be an even divider...
		*
		* The scaler and LCD clocks depend on the S3C64XX version, and also
		* have a common parent divisor so are not included here.
		*/

		/* clocks that feed other parts of the clock source tree */

		static struct clk clk_iis_cd0 = {
		.name = "iis_cdclk0",
		};

		static struct clk clk_iis_cd1 = {
		.name = "iis_cdclk1",
		};

		static struct clk clk_iisv4_cd = {
		.name = "iis_cdclk_v4",
		};

		static struct clk clk_pcm_cd = {
		.name = "pcm_cdclk",
		};

		static struct clk *clkset_audio0_list[] = {
		[0] = &clk_mout_epll.clk,
		[1] = &clk_dout_mpll,
		[2] = &clk_fin_epll,
		[3] = &clk_iis_cd0,
		[4] = &clk_pcm_cd,
		};

		static struct clksrc_sources clkset_audio0 = {
		.sources = clkset_audio0_list,
		.nr_sources = ARRAY_SIZE(clkset_audio0_list),
		};

		static struct clk *clkset_audio1_list[] = {
		[0] = &clk_mout_epll.clk,
		[1] = &clk_dout_mpll,
		[2] = &clk_fin_epll,
		[3] = &clk_iis_cd1,
		[4] = &clk_pcm_cd,
		};

		static struct clksrc_sources clkset_audio1 = {
		.sources = clkset_audio1_list,
		.nr_sources = ARRAY_SIZE(clkset_audio1_list),
		};

		#ifdef CONFIG_CPU_S3C6410
		static struct clk *clkset_audio2_list[] = {
		[0] = &clk_mout_epll.clk,
		[1] = &clk_dout_mpll,
		[2] = &clk_fin_epll,
		[3] = &clk_iisv4_cd,
		[4] = &clk_pcm_cd,
		};

		static struct clksrc_sources clkset_audio2 = {
		.sources = clkset_audio2_list,
		.nr_sources = ARRAY_SIZE(clkset_audio2_list),
		};
		#endif

		static struct clksrc_clk clksrcs[] = {
		{
		.clk = {
		.name = "usb-bus-host",
		.ctrlbit = S3C_CLKCON_SCLK_UHOST,
		.enable = s3c64xx_sclk_ctrl,
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 5, .size = 2 },
		.reg_div = { .reg = S3C_CLK_DIV1, .shift = 20, .size = 4 },
		.sources = &clkset_uhost,
		}, {
		.clk = {
		.name = "irda-bus",
		.ctrlbit = S3C_CLKCON_SCLK_IRDA,
		.enable = s3c64xx_sclk_ctrl,
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 24, .size = 2 },
		.reg_div = { .reg = S3C_CLK_DIV2, .shift = 20, .size = 4 },
		.sources = &clkset_irda,
		}, {
		.clk = {
		.name = "camera",
		.ctrlbit = S3C_CLKCON_SCLK_CAM,
		.enable = s3c64xx_sclk_ctrl,
		.parent = &clk_h2,
		},
		.reg_div = { .reg = S3C_CLK_DIV0, .shift = 20, .size = 4 },
		},
		};

		/* Where does UCLK0 come from? */
		static struct clksrc_clk clk_sclk_uclk = {
		.clk = {
		.name = "uclk1",
		.ctrlbit = S3C_CLKCON_SCLK_UART,
		.enable = s3c64xx_sclk_ctrl,
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 13, .size = 1 },
		.reg_div = { .reg = S3C_CLK_DIV2, .shift = 16, .size = 4 },
		.sources = &clkset_uart,
		};

		static struct clksrc_clk clk_sclk_mmc0 = {
		.clk = {
		.name = "mmc_bus",
		.devname = "s3c-sdhci.0",
		.ctrlbit = S3C_CLKCON_SCLK_MMC0,
		.enable = s3c64xx_sclk_ctrl,
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 18, .size = 2 },
		.reg_div = { .reg = S3C_CLK_DIV1, .shift = 0, .size = 4 },
		.sources = &clkset_spi_mmc,
		};

		static struct clksrc_clk clk_sclk_mmc1 = {
		.clk = {
		.name = "mmc_bus",
		.devname = "s3c-sdhci.1",
		.ctrlbit = S3C_CLKCON_SCLK_MMC1,
		.enable = s3c64xx_sclk_ctrl,
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 20, .size = 2 },
		.reg_div = { .reg = S3C_CLK_DIV1, .shift = 4, .size = 4 },
		.sources = &clkset_spi_mmc,
		};

		static struct clksrc_clk clk_sclk_mmc2 = {
		.clk = {
		.name = "mmc_bus",
		.devname = "s3c-sdhci.2",
		.ctrlbit = S3C_CLKCON_SCLK_MMC2,
		.enable = s3c64xx_sclk_ctrl,
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 22, .size = 2 },
		.reg_div = { .reg = S3C_CLK_DIV1, .shift = 8, .size = 4 },
		.sources = &clkset_spi_mmc,
		};

		static struct clksrc_clk clk_sclk_spi0 = {
		.clk = {
		.name = "spi-bus",
		.devname = "s3c6410-spi.0",
		.ctrlbit = S3C_CLKCON_SCLK_SPI0,
		.enable = s3c64xx_sclk_ctrl,
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 14, .size = 2 },
		.reg_div = { .reg = S3C_CLK_DIV2, .shift = 0, .size = 4 },
		.sources = &clkset_spi_mmc,
		};

		static struct clksrc_clk clk_sclk_spi1 = {
		.clk = {
		.name = "spi-bus",
		.devname = "s3c6410-spi.1",
		.ctrlbit = S3C_CLKCON_SCLK_SPI1,
		.enable = s3c64xx_sclk_ctrl,
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 16, .size = 2 },
		.reg_div = { .reg = S3C_CLK_DIV2, .shift = 4, .size = 4 },
		.sources = &clkset_spi_mmc,
		};

		static struct clksrc_clk clk_audio_bus0 = {
		.clk = {
		.name = "audio-bus",
		.devname = "samsung-i2s.0",
		.ctrlbit = S3C_CLKCON_SCLK_AUDIO0,
		.enable = s3c64xx_sclk_ctrl,
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 7, .size = 3 },
		.reg_div = { .reg = S3C_CLK_DIV2, .shift = 8, .size = 4 },
		.sources = &clkset_audio0,
		};

		static struct clksrc_clk clk_audio_bus1 = {
		.clk = {
		.name = "audio-bus",
		.devname = "samsung-i2s.1",
		.ctrlbit = S3C_CLKCON_SCLK_AUDIO1,
		.enable = s3c64xx_sclk_ctrl,
		},
		.reg_src = { .reg = S3C_CLK_SRC, .shift = 10, .size = 3 },
		.reg_div = { .reg = S3C_CLK_DIV2, .shift = 12, .size = 4 },
		.sources = &clkset_audio1,
		};

		#ifdef CONFIG_CPU_S3C6410
		static struct clksrc_clk clk_audio_bus2 = {
		.clk = {
		.name = "audio-bus",
		.devname = "samsung-i2s.2",
		.ctrlbit = S3C6410_CLKCON_SCLK_AUDIO2,
		.enable = s3c64xx_sclk_ctrl,
		},
		.reg_src = { .reg = S3C6410_CLK_SRC2, .shift = 0, .size = 3 },
		.reg_div = { .reg = S3C_CLK_DIV2, .shift = 24, .size = 4 },
		.sources = &clkset_audio2,
		};
		#endif
		/* Clock initialisation code */

		static struct clksrc_clk *init_parents[] = {
		&clk_mout_apll,
		&clk_mout_epll,
		&clk_mout_mpll,
		};

		static struct clksrc_clk *clksrc_cdev[] = {
		&clk_sclk_uclk,
		&clk_sclk_mmc0,
		&clk_sclk_mmc1,
		&clk_sclk_mmc2,
		&clk_sclk_spi0,
		&clk_sclk_spi1,
		&clk_audio_bus0,
		&clk_audio_bus1,
		};

		static struct clk *clk_cdev[] = {
		&clk_hsmmc0,
		&clk_hsmmc1,
		&clk_hsmmc2,
		&clk_48m_spi0,
		&clk_48m_spi1,
		&clk_i2s0,
		&clk_i2s1,
		};

		static struct clk_lookup s3c64xx_clk_lookup[] = {
		CLKDEV_INIT(NULL, "clk_uart_baud2", &clk_p),
		CLKDEV_INIT(NULL, "clk_uart_baud3", &clk_sclk_uclk.clk),
		CLKDEV_INIT("s3c-sdhci.0", "mmc_busclk.0", &clk_hsmmc0),
		CLKDEV_INIT("s3c-sdhci.1", "mmc_busclk.0", &clk_hsmmc1),
		CLKDEV_INIT("s3c-sdhci.2", "mmc_busclk.0", &clk_hsmmc2),
		CLKDEV_INIT("s3c-sdhci.0", "mmc_busclk.2", &clk_sclk_mmc0.clk),
		CLKDEV_INIT("s3c-sdhci.1", "mmc_busclk.2", &clk_sclk_mmc1.clk),
		CLKDEV_INIT("s3c-sdhci.2", "mmc_busclk.2", &clk_sclk_mmc2.clk),
		CLKDEV_INIT(NULL, "spi_busclk0", &clk_p),
		CLKDEV_INIT("s3c6410-spi.0", "spi_busclk1", &clk_sclk_spi0.clk),
		CLKDEV_INIT("s3c6410-spi.0", "spi_busclk2", &clk_48m_spi0),
		CLKDEV_INIT("s3c6410-spi.1", "spi_busclk1", &clk_sclk_spi1.clk),
		CLKDEV_INIT("s3c6410-spi.1", "spi_busclk2", &clk_48m_spi1),
		CLKDEV_INIT("samsung-i2s.0", "i2s_opclk0", &clk_i2s0),
		CLKDEV_INIT("samsung-i2s.0", "i2s_opclk1", &clk_audio_bus0.clk),
		CLKDEV_INIT("samsung-i2s.1", "i2s_opclk0", &clk_i2s1),
		CLKDEV_INIT("samsung-i2s.1", "i2s_opclk1", &clk_audio_bus1.clk),
		#ifdef CONFIG_CPU_S3C6410
		CLKDEV_INIT("samsung-i2s.2", "i2s_opclk0", &clk_i2s2),
		CLKDEV_INIT("samsung-i2s.2", "i2s_opclk1", &clk_audio_bus2.clk),
		#endif
		};

		#define GET_DIV(clk, field) ((((clk) & field##_MASK) >> field##_SHIFT) + 1)

		void __init_or_cpufreq s3c64xx_setup_clocks(void)
		{
		struct clk *xtal_clk;
		unsigned long xtal;
		unsigned long fclk;
		unsigned long hclk;
		unsigned long hclk2;
		unsigned long pclk;
		unsigned long epll;
		unsigned long apll;
		unsigned long mpll;
		unsigned int ptr;
		u32 clkdiv0;

		printk(KERN_DEBUG "%s: registering clocks\n", __func__);

		clkdiv0 = __raw_readl(S3C_CLK_DIV0);
		printk(KERN_DEBUG "%s: clkdiv0 = %08x\n", __func__, clkdiv0);

		xtal_clk = clk_get(NULL, "xtal");
		BUG_ON(IS_ERR(xtal_clk));

		xtal = clk_get_rate(xtal_clk);
		clk_put(xtal_clk);

		printk(KERN_DEBUG "%s: xtal is %ld\n", __func__, xtal);

		/* For now assume the mux always selects the crystal */
		clk_ext_xtal_mux.parent = xtal_clk;

		epll = s3c_get_pll6553x(xtal, __raw_readl(S3C_EPLL_CON0),
		__raw_readl(S3C_EPLL_CON1));
		mpll = s3c6400_get_pll(xtal, __raw_readl(S3C_MPLL_CON));
		apll = s3c6400_get_pll(xtal, __raw_readl(S3C_APLL_CON));

		fclk = mpll;

		printk(KERN_INFO "S3C64XX: PLL settings, A=%ld, M=%ld, E=%ld\n",
		apll, mpll, epll);

		if(__raw_readl(S3C64XX_OTHERS) & S3C64XX_OTHERS_SYNCMUXSEL)
		/* Synchronous mode */
		hclk2 = apll / GET_DIV(clkdiv0, S3C6400_CLKDIV0_HCLK2);
		else
		/* Asynchronous mode */
		hclk2 = mpll / GET_DIV(clkdiv0, S3C6400_CLKDIV0_HCLK2);

		hclk = hclk2 / GET_DIV(clkdiv0, S3C6400_CLKDIV0_HCLK);
		pclk = hclk2 / GET_DIV(clkdiv0, S3C6400_CLKDIV0_PCLK);

		printk(KERN_INFO "S3C64XX: HCLK2=%ld, HCLK=%ld, PCLK=%ld\n",
		hclk2, hclk, pclk);

		clk_fout_mpll.rate = mpll;
		clk_fout_epll.rate = epll;
		clk_fout_apll.rate = apll;

		clk_h2.rate = hclk2;
		clk_h.rate = hclk;
		clk_p.rate = pclk;
		clk_f.rate = fclk;

		for (ptr = 0; ptr < ARRAY_SIZE(init_parents); ptr++)
		s3c_set_clksrc(init_parents[ptr], true);

		for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
		s3c_set_clksrc(&clksrcs[ptr], true);
		}

		static struct clk *clks1[] __initdata = {
		&clk_ext_xtal_mux,
		&clk_iis_cd0,
		&clk_iis_cd1,
		&clk_iisv4_cd,
		&clk_pcm_cd,
		&clk_mout_epll.clk,
		&clk_mout_mpll.clk,
		&clk_dout_mpll,
		&clk_arm,
		};

		static struct clk *clks[] __initdata = {
		&clk_ext,
		&clk_epll,
		&clk_27m,
		&clk_48m,
		&clk_h2,
		&clk_xusbxti,
		};

		/**
		* s3c64xx_register_clocks - register clocks for s3c6400 and s3c6410
		* @xtal: The rate for the clock crystal feeding the PLLs.
		* @armclk_divlimit: Divisor mask for ARMCLK.
		*
		* Register the clocks for the S3C6400 and S3C6410 SoC range, such
		* as ARMCLK as well as the necessary parent clocks.
		*
		* This call does not setup the clocks, which is left to the
		* s3c64xx_setup_clocks() call which may be needed by the cpufreq
		* or resume code to re-set the clocks if the bootloader has changed
		* them.
		*/
		void __init s3c64xx_register_clocks(unsigned long xtal,
		unsigned armclk_divlimit)
		{
		unsigned int cnt;

		armclk_mask = armclk_divlimit;

		s3c24xx_register_baseclocks(xtal);
		s3c24xx_register_clocks(clks, ARRAY_SIZE(clks));

		s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks));

		s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));
		s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off));

		s3c24xx_register_clocks(clk_cdev, ARRAY_SIZE(clk_cdev));
		for (cnt = 0; cnt < ARRAY_SIZE(clk_cdev); cnt++)
		s3c_disable_clocks(clk_cdev[cnt], 1);

		s3c24xx_register_clocks(clks1, ARRAY_SIZE(clks1));
		s3c_register_clksrc(clksrcs, ARRAY_SIZE(clksrcs));
		for (cnt = 0; cnt < ARRAY_SIZE(clksrc_cdev); cnt++)
		s3c_register_clksrc(clksrc_cdev[cnt], 1);
		clkdev_add_table(s3c64xx_clk_lookup, ARRAY_SIZE(s3c64xx_clk_lookup));
		}

arch/arm/mach-s3c64xx/common.h

+0 −2

Original line number	Diff line number	Diff line
		@@ -37,7 +37,6 @@ extern void s3c6400_init_irq(void);
		extern void s3c6400_map_io(void);

		#else
		#define s3c6400_init_clocks NULL
		#define s3c6400_map_io NULL
		#define s3c6400_init NULL
		#endif
		@@ -49,7 +48,6 @@ extern void s3c6410_init_irq(void);
		extern void s3c6410_map_io(void);

		#else
		#define s3c6410_init_clocks NULL
		#define s3c6410_map_io NULL
		#define s3c6410_init NULL
		#endif

arch/arm/mach-s3c64xx/include/mach/regs-clock.h

+4 −128

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arch/arm/mach-s3c64xx/pm.c

+0 −21

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