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Diffstat (limited to 'arch/arm/mach-s3c2410/clock.c')
-rw-r--r--arch/arm/mach-s3c2410/clock.c276
1 files changed, 0 insertions, 276 deletions
diff --git a/arch/arm/mach-s3c2410/clock.c b/arch/arm/mach-s3c2410/clock.c
deleted file mode 100644
index 4e07943c1e29..000000000000
--- a/arch/arm/mach-s3c2410/clock.c
+++ /dev/null
@@ -1,276 +0,0 @@
-/* linux/arch/arm/mach-s3c2410/clock.c
- *
- * Copyright (c) 2006 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2410,S3C2440,S3C2442 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-*/
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/sysdev.h>
-#include <linux/clk.h>
-#include <linux/mutex.h>
-#include <linux/delay.h>
-#include <linux/serial_core.h>
-#include <linux/io.h>
-
-#include <asm/mach/map.h>
-
-#include <mach/hardware.h>
-
-#include <plat/regs-serial.h>
-#include <mach/regs-clock.h>
-#include <mach/regs-gpio.h>
-
-#include <plat/s3c2410.h>
-#include <plat/clock.h>
-#include <plat/cpu.h>
-
-int s3c2410_clkcon_enable(struct clk *clk, int enable)
-{
-	unsigned int clocks = clk->ctrlbit;
-	unsigned long clkcon;
-
-	clkcon = __raw_readl(S3C2410_CLKCON);
-
-	if (enable)
-		clkcon |= clocks;
-	else
-		clkcon &= ~clocks;
-
-	/* ensure none of the special function bits set */
-	clkcon &= ~(S3C2410_CLKCON_IDLE|S3C2410_CLKCON_POWER);
-
-	__raw_writel(clkcon, S3C2410_CLKCON);
-
-	return 0;
-}
-
-static int s3c2410_upll_enable(struct clk *clk, int enable)
-{
-	unsigned long clkslow = __raw_readl(S3C2410_CLKSLOW);
-	unsigned long orig = clkslow;
-
-	if (enable)
-		clkslow &= ~S3C2410_CLKSLOW_UCLK_OFF;
-	else
-		clkslow |= S3C2410_CLKSLOW_UCLK_OFF;
-
-	__raw_writel(clkslow, S3C2410_CLKSLOW);
-
-	/* if we started the UPLL, then allow to settle */
-
-	if (enable && (orig & S3C2410_CLKSLOW_UCLK_OFF))
-		udelay(200);
-
-	return 0;
-}
-
-/* standard clock definitions */
-
-static struct clk init_clocks_disable[] = {
-	{
-		.name		= "nand",
-		.id		= -1,
-		.parent		= &clk_h,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_NAND,
-	}, {
-		.name		= "sdi",
-		.id		= -1,
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_SDI,
-	}, {
-		.name		= "adc",
-		.id		= -1,
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_ADC,
-	}, {
-		.name		= "i2c",
-		.id		= -1,
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_IIC,
-	}, {
-		.name		= "iis",
-		.id		= -1,
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_IIS,
-	}, {
-		.name		= "spi",
-		.id		= -1,
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_SPI,
-	}
-};
-
-static struct clk init_clocks[] = {
-	{
-		.name		= "lcd",
-		.id		= -1,
-		.parent		= &clk_h,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_LCDC,
-	}, {
-		.name		= "gpio",
-		.id		= -1,
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_GPIO,
-	}, {
-		.name		= "usb-host",
-		.id		= -1,
-		.parent		= &clk_h,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_USBH,
-	}, {
-		.name		= "usb-device",
-		.id		= -1,
-		.parent		= &clk_h,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_USBD,
-	}, {
-		.name		= "timers",
-		.id		= -1,
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_PWMT,
-	}, {
-		.name		= "uart",
-		.id		= 0,
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_UART0,
-	}, {
-		.name		= "uart",
-		.id		= 1,
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_UART1,
-	}, {
-		.name		= "uart",
-		.id		= 2,
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_UART2,
-	}, {
-		.name		= "rtc",
-		.id		= -1,
-		.parent		= &clk_p,
-		.enable		= s3c2410_clkcon_enable,
-		.ctrlbit	= S3C2410_CLKCON_RTC,
-	}, {
-		.name		= "watchdog",
-		.id		= -1,
-		.parent		= &clk_p,
-		.ctrlbit	= 0,
-	}, {
-		.name		= "usb-bus-host",
-		.id		= -1,
-		.parent		= &clk_usb_bus,
-	}, {
-		.name		= "usb-bus-gadget",
-		.id		= -1,
-		.parent		= &clk_usb_bus,
-	},
-};
-
-/* s3c2410_baseclk_add()
- *
- * Add all the clocks used by the s3c2410 or compatible CPUs
- * such as the S3C2440 and S3C2442.
- *
- * We cannot use a system device as we are needed before any
- * of the init-calls that initialise the devices are actually
- * done.
-*/
-
-int __init s3c2410_baseclk_add(void)
-{
-	unsigned long clkslow = __raw_readl(S3C2410_CLKSLOW);
-	unsigned long clkcon  = __raw_readl(S3C2410_CLKCON);
-	struct clk *clkp;
-	struct clk *xtal;
-	int ret;
-	int ptr;
-
-	clk_upll.enable = s3c2410_upll_enable;
-
-	if (s3c24xx_register_clock(&clk_usb_bus) < 0)
-		printk(KERN_ERR "failed to register usb bus clock\n");
-
-	/* register clocks from clock array */
-
-	clkp = init_clocks;
-	for (ptr = 0; ptr < ARRAY_SIZE(init_clocks); ptr++, clkp++) {
-		/* ensure that we note the clock state */
-
-		clkp->usage = clkcon & clkp->ctrlbit ? 1 : 0;
-
-		ret = s3c24xx_register_clock(clkp);
-		if (ret < 0) {
-			printk(KERN_ERR "Failed to register clock %s (%d)\n",
-			       clkp->name, ret);
-		}
-	}
-
-	/* We must be careful disabling the clocks we are not intending to
-	 * be using at boot time, as subsystems such as the LCD which do
-	 * their own DMA requests to the bus can cause the system to lockup
-	 * if they where in the middle of requesting bus access.
-	 *
-	 * Disabling the LCD clock if the LCD is active is very dangerous,
-	 * and therefore the bootloader should be careful to not enable
-	 * the LCD clock if it is not needed.
-	*/
-
-	/* install (and disable) the clocks we do not need immediately */
-
-	clkp = init_clocks_disable;
-	for (ptr = 0; ptr < ARRAY_SIZE(init_clocks_disable); ptr++, clkp++) {
-
-		ret = s3c24xx_register_clock(clkp);
-		if (ret < 0) {
-			printk(KERN_ERR "Failed to register clock %s (%d)\n",
-			       clkp->name, ret);
-		}
-
-		s3c2410_clkcon_enable(clkp, 0);
-	}
-
-	/* show the clock-slow value */
-
-	xtal = clk_get(NULL, "xtal");
-
-	printk("CLOCK: Slow mode (%ld.%ld MHz), %s, MPLL %s, UPLL %s\n",
-	       print_mhz(clk_get_rate(xtal) /
-			 ( 2 * S3C2410_CLKSLOW_GET_SLOWVAL(clkslow))),
-	       (clkslow & S3C2410_CLKSLOW_SLOW) ? "slow" : "fast",
-	       (clkslow & S3C2410_CLKSLOW_MPLL_OFF) ? "off" : "on",
-	       (clkslow & S3C2410_CLKSLOW_UCLK_OFF) ? "off" : "on");
-
-	return 0;
-}
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-10-05 09:24:45 +0000