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Diffstat (limited to 'arch/arm/mach-s3c24xx/clock-s3c2440.c')
-rw-r--r--arch/arm/mach-s3c24xx/clock-s3c2440.c217
1 files changed, 0 insertions, 217 deletions
diff --git a/arch/arm/mach-s3c24xx/clock-s3c2440.c b/arch/arm/mach-s3c24xx/clock-s3c2440.c
deleted file mode 100644
index 5527226fd61f..000000000000
--- a/arch/arm/mach-s3c24xx/clock-s3c2440.c
+++ /dev/null
@@ -1,217 +0,0 @@
-/* linux/arch/arm/mach-s3c2440/clock.c
- *
- * Copyright (c) 2004-2005 Simtec Electronics
- * http://armlinux.simtec.co.uk/
- * Ben Dooks <ben@simtec.co.uk>
- *
- * S3C2440 Clock 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/device.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/mutex.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/serial_core.h>
-#include <linux/serial_s3c.h>
-
-#include <mach/hardware.h>
-#include <linux/atomic.h>
-#include <asm/irq.h>
-
-#include <mach/regs-clock.h>
-
-#include <plat/clock.h>
-#include <plat/cpu.h>
-
-/* S3C2440 extended clock support */
-
-static unsigned long s3c2440_camif_upll_round(struct clk *clk,
- unsigned long rate)
-{
- unsigned long parent_rate = clk_get_rate(clk->parent);
- int div;
-
- if (rate > parent_rate)
- return parent_rate;
-
- /* note, we remove the +/- 1 calculations for the divisor */
-
- div = (parent_rate / rate) / 2;
-
- if (div < 1)
- div = 1;
- else if (div > 16)
- div = 16;
-
- return parent_rate / (div * 2);
-}
-
-static int s3c2440_camif_upll_setrate(struct clk *clk, unsigned long rate)
-{
- unsigned long parent_rate = clk_get_rate(clk->parent);
- unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
-
- rate = s3c2440_camif_upll_round(clk, rate);
-
- camdivn &= ~(S3C2440_CAMDIVN_CAMCLK_SEL | S3C2440_CAMDIVN_CAMCLK_MASK);
-
- if (rate != parent_rate) {
- camdivn |= S3C2440_CAMDIVN_CAMCLK_SEL;
- camdivn |= (((parent_rate / rate) / 2) - 1);
- }
-
- __raw_writel(camdivn, S3C2440_CAMDIVN);
-
- return 0;
-}
-
-static unsigned long s3c2440_camif_upll_getrate(struct clk *clk)
-{
- unsigned long parent_rate = clk_get_rate(clk->parent);
- unsigned long camdivn = __raw_readl(S3C2440_CAMDIVN);
-
- if (!(camdivn & S3C2440_CAMDIVN_CAMCLK_SEL))
- return parent_rate;
-
- camdivn &= S3C2440_CAMDIVN_CAMCLK_MASK;
-
- return parent_rate / (camdivn + 1) / 2;
-}
-
-/* Extra S3C2440 clocks */
-
-static struct clk s3c2440_clk_cam = {
- .name = "camif",
- .enable = s3c2410_clkcon_enable,
- .ctrlbit = S3C2440_CLKCON_CAMERA,
-};
-
-static struct clk s3c2440_clk_cam_upll = {
- .name = "camif-upll",
- .ops = &(struct clk_ops) {
- .set_rate = s3c2440_camif_upll_setrate,
- .get_rate = s3c2440_camif_upll_getrate,
- .round_rate = s3c2440_camif_upll_round,
- },
-};
-
-static struct clk s3c2440_clk_ac97 = {
- .name = "ac97",
- .enable = s3c2410_clkcon_enable,
- .ctrlbit = S3C2440_CLKCON_AC97,
-};
-
-#define S3C24XX_VA_UART0 (S3C_VA_UART)
-#define S3C24XX_VA_UART1 (S3C_VA_UART + 0x4000 )
-#define S3C24XX_VA_UART2 (S3C_VA_UART + 0x8000 )
-#define S3C24XX_VA_UART3 (S3C_VA_UART + 0xC000 )
-
-static unsigned long s3c2440_fclk_n_getrate(struct clk *clk)
-{
- unsigned long ucon0, ucon1, ucon2, divisor;
-
- /* the fun of calculating the uart divisors on the s3c2440 */
- ucon0 = __raw_readl(S3C24XX_VA_UART0 + S3C2410_UCON);
- ucon1 = __raw_readl(S3C24XX_VA_UART1 + S3C2410_UCON);
- ucon2 = __raw_readl(S3C24XX_VA_UART2 + S3C2410_UCON);
-
- ucon0 &= S3C2440_UCON0_DIVMASK;
- ucon1 &= S3C2440_UCON1_DIVMASK;
- ucon2 &= S3C2440_UCON2_DIVMASK;
-
- if (ucon0 != 0)
- divisor = (ucon0 >> S3C2440_UCON_DIVSHIFT) + 6;
- else if (ucon1 != 0)
- divisor = (ucon1 >> S3C2440_UCON_DIVSHIFT) + 21;
- else if (ucon2 != 0)
- divisor = (ucon2 >> S3C2440_UCON_DIVSHIFT) + 36;
- else
- /* manual calims 44, seems to be 9 */
- divisor = 9;
-
- return clk_get_rate(clk->parent) / divisor;
-}
-
-static struct clk s3c2440_clk_fclk_n = {
- .name = "fclk_n",
- .parent = &clk_f,
- .ops = &(struct clk_ops) {
- .get_rate = s3c2440_fclk_n_getrate,
- },
-};
-
-static struct clk_lookup s3c2440_clk_lookup[] = {
- CLKDEV_INIT(NULL, "clk_uart_baud1", &s3c24xx_uclk),
- CLKDEV_INIT(NULL, "clk_uart_baud2", &clk_p),
- CLKDEV_INIT(NULL, "clk_uart_baud3", &s3c2440_clk_fclk_n),
- CLKDEV_INIT("s3c2440-uart.0", "uart", &s3c24xx_clk_uart0),
- CLKDEV_INIT("s3c2440-uart.1", "uart", &s3c24xx_clk_uart1),
- CLKDEV_INIT("s3c2440-uart.2", "uart", &s3c24xx_clk_uart2),
- CLKDEV_INIT("s3c2440-camif", "camera", &s3c2440_clk_cam_upll),
-};
-
-static int __init_refok s3c2440_clk_add(struct device *dev, struct subsys_interface *sif)
-{
- struct clk *clock_upll;
- struct clk *clock_h;
- struct clk *clock_p;
-
- clock_p = clk_get(NULL, "pclk");
- clock_h = clk_get(NULL, "hclk");
- clock_upll = clk_get(NULL, "upll");
-
- if (IS_ERR(clock_p) || IS_ERR(clock_h) || IS_ERR(clock_upll)) {
- printk(KERN_ERR "S3C2440: Failed to get parent clocks\n");
- return -EINVAL;
- }
-
- s3c2440_clk_cam.parent = clock_h;
- s3c2440_clk_ac97.parent = clock_p;
- s3c2440_clk_cam_upll.parent = clock_upll;
- s3c24xx_register_clock(&s3c2440_clk_fclk_n);
-
- s3c24xx_register_clock(&s3c2440_clk_ac97);
- s3c24xx_register_clock(&s3c2440_clk_cam);
- s3c24xx_register_clock(&s3c2440_clk_cam_upll);
- clkdev_add_table(s3c2440_clk_lookup, ARRAY_SIZE(s3c2440_clk_lookup));
-
- clk_disable(&s3c2440_clk_ac97);
- clk_disable(&s3c2440_clk_cam);
-
- return 0;
-}
-
-static struct subsys_interface s3c2440_clk_interface = {
- .name = "s3c2440_clk",
- .subsys = &s3c2440_subsys,
- .add_dev = s3c2440_clk_add,
-};
-
-static __init int s3c24xx_clk_init(void)
-{
- return subsys_interface_register(&s3c2440_clk_interface);
-}
-
-arch_initcall(s3c24xx_clk_init);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 07:59:05 +0000