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Diffstat (limited to 'arch/arm/mach-s3c2410/pwm.c')
-rw-r--r--arch/arm/mach-s3c2410/pwm.c288
1 files changed, 0 insertions, 288 deletions
diff --git a/arch/arm/mach-s3c2410/pwm.c b/arch/arm/mach-s3c2410/pwm.c
deleted file mode 100644
index 5d9ed5b653f..00000000000
--- a/arch/arm/mach-s3c2410/pwm.c
+++ /dev/null
@@ -1,288 +0,0 @@
-/*
- * arch/arm/mach-s3c2410/3c2410-pwm.c
- *
- * Copyright (c) by Javi Roman <javiroman@kernel-labs.org>
- * for the Openmoko Project.
- *
- * S3C2410A SoC PWM 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.
- *
- * 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/kernel.h>
-#include <linux/init.h>
-#include <linux/clk.h>
-#include <linux/device.h>
-#include <mach/hardware.h>
-#include <plat/regs-timer.h>
-#include <mach/pwm.h>
-#include <asm/io.h>
-
-#ifdef CONFIG_PM
- static unsigned long standby_reg_tcon;
- static unsigned long standby_reg_tcfg0;
- static unsigned long standby_reg_tcfg1;
-#endif
-
-int s3c2410_pwm_disable(struct s3c2410_pwm *pwm)
-{
- unsigned long tcon;
-
- /* stop timer */
- tcon = __raw_readl(S3C2410_TCON);
- tcon &= 0xffffff00;
- __raw_writel(tcon, S3C2410_TCON);
-
- clk_disable(pwm->pclk);
- clk_put(pwm->pclk);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(s3c2410_pwm_disable);
-
-int s3c2410_pwm_init(struct s3c2410_pwm *pwm)
-{
- pwm->pclk = clk_get(NULL, "timers");
- if (IS_ERR(pwm->pclk))
- return PTR_ERR(pwm->pclk);
-
- clk_enable(pwm->pclk);
- pwm->pclk_rate = clk_get_rate(pwm->pclk);
- return 0;
-}
-EXPORT_SYMBOL_GPL(s3c2410_pwm_init);
-
-int s3c2410_pwm_enable(struct s3c2410_pwm *pwm)
-{
- unsigned long tcfg0, tcfg1, tcnt, tcmp;
-
- /* control registers bits */
- tcfg1 = __raw_readl(S3C2410_TCFG1);
- tcfg0 = __raw_readl(S3C2410_TCFG0);
-
- /* divider & scaler slection */
- switch (pwm->timerid) {
- case PWM0:
- tcfg1 &= ~S3C2410_TCFG1_MUX0_MASK;
- tcfg0 &= ~S3C2410_TCFG_PRESCALER0_MASK;
- break;
- case PWM1:
- tcfg1 &= ~S3C2410_TCFG1_MUX1_MASK;
- tcfg0 &= ~S3C2410_TCFG_PRESCALER0_MASK;
- break;
- case PWM2:
- tcfg1 &= ~S3C2410_TCFG1_MUX2_MASK;
- tcfg0 &= ~S3C2410_TCFG_PRESCALER1_MASK;
- break;
- case PWM3:
- tcfg1 &= ~S3C2410_TCFG1_MUX3_MASK;
- tcfg0 &= ~S3C2410_TCFG_PRESCALER1_MASK;
- break;
- case PWM4:
- /* timer four is not capable of doing PWM */
- break;
- default:
- clk_disable(pwm->pclk);
- clk_put(pwm->pclk);
- return -1;
- }
-
- /* divider & scaler values */
- tcfg1 |= pwm->divider;
- __raw_writel(tcfg1, S3C2410_TCFG1);
-
- switch (pwm->timerid) {
- case PWM0:
- case PWM1:
- tcfg0 |= pwm->prescaler;
- __raw_writel(tcfg0, S3C2410_TCFG0);
- break;
- default:
- if ((tcfg0 | pwm->prescaler) != tcfg0) {
- printk(KERN_WARNING "not changing prescaler of PWM %u,"
- " since it's shared with timer4 (clock tick)\n",
- pwm->timerid);
- }
- break;
- }
-
- /* timer count and compare buffer initial values */
- tcnt = pwm->counter;
- tcmp = pwm->comparer;
-
- __raw_writel(tcnt, S3C2410_TCNTB(pwm->timerid));
- __raw_writel(tcmp, S3C2410_TCMPB(pwm->timerid));
-
- /* ensure timer is stopped */
- s3c2410_pwm_stop(pwm);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(s3c2410_pwm_enable);
-
-int s3c2410_pwm_start(struct s3c2410_pwm *pwm)
-{
- unsigned long tcon;
-
- tcon = __raw_readl(S3C2410_TCON);
-
- switch (pwm->timerid) {
- case PWM0:
- tcon |= S3C2410_TCON_T0START;
- tcon &= ~S3C2410_TCON_T0MANUALUPD;
- break;
- case PWM1:
- tcon |= S3C2410_TCON_T1START;
- tcon &= ~S3C2410_TCON_T1MANUALUPD;
- break;
- case PWM2:
- tcon |= S3C2410_TCON_T2START;
- tcon &= ~S3C2410_TCON_T2MANUALUPD;
- break;
- case PWM3:
- tcon |= S3C2410_TCON_T3START;
- tcon &= ~S3C2410_TCON_T3MANUALUPD;
- break;
- case PWM4:
- /* timer four is not capable of doing PWM */
- default:
- return -ENODEV;
- }
-
- __raw_writel(tcon, S3C2410_TCON);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(s3c2410_pwm_start);
-
-int s3c2410_pwm_stop(struct s3c2410_pwm *pwm)
-{
- unsigned long tcon;
-
- tcon = __raw_readl(S3C2410_TCON);
-
- switch (pwm->timerid) {
- case PWM0:
- tcon &= ~0x00000000;
- tcon |= S3C2410_TCON_T0RELOAD;
- tcon |= S3C2410_TCON_T0MANUALUPD;
- break;
- case PWM1:
- tcon &= ~0x00000080;
- tcon |= S3C2410_TCON_T1RELOAD;
- tcon |= S3C2410_TCON_T1MANUALUPD;
- break;
- case PWM2:
- tcon &= ~0x00000800;
- tcon |= S3C2410_TCON_T2RELOAD;
- tcon |= S3C2410_TCON_T2MANUALUPD;
- break;
- case PWM3:
- tcon &= ~0x00008000;
- tcon |= S3C2410_TCON_T3RELOAD;
- tcon |= S3C2410_TCON_T3MANUALUPD;
- break;
- case PWM4:
- /* timer four is not capable of doing PWM */
- default:
- return -ENODEV;
- }
-
- __raw_writel(tcon, S3C2410_TCON);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(s3c2410_pwm_stop);
-
-int s3c2410_pwm_duty_cycle(int reg_value, struct s3c2410_pwm *pwm)
-{
- __raw_writel(reg_value, S3C2410_TCMPB(pwm->timerid));
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(s3c2410_pwm_duty_cycle);
-
-int s3c2410_pwm_dumpregs(void)
-{
- printk(KERN_INFO "TCON: %08lx, TCFG0: %08lx, TCFG1: %08lx\n",
- (unsigned long) __raw_readl(S3C2410_TCON),
- (unsigned long) __raw_readl(S3C2410_TCFG0),
- (unsigned long) __raw_readl(S3C2410_TCFG1));
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(s3c2410_pwm_dumpregs);
-
-static int __init s3c24xx_pwm_probe(struct platform_device *pdev)
-{
- struct s3c24xx_pwm_platform_data *pdata = pdev->dev.platform_data;
-
- dev_info(&pdev->dev, "s3c24xx_pwm is registered \n");
-
- /* if platform was interested, give him a chance to register
- * platform devices that switch power with us as the parent
- * at registration time -- ensures suspend / resume ordering
- */
- if (pdata)
- if (pdata->attach_child_devices)
- (pdata->attach_child_devices)(&pdev->dev);
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int s3c24xx_pwm_suspend(struct platform_device *pdev, pm_message_t state)
-{
- /* PWM config should be kept in suspending */
- standby_reg_tcon = __raw_readl(S3C2410_TCON);
- standby_reg_tcfg0 = __raw_readl(S3C2410_TCFG0);
- standby_reg_tcfg1 = __raw_readl(S3C2410_TCFG1);
-
- return 0;
-}
-
-static int s3c24xx_pwm_resume(struct platform_device *pdev)
-{
- __raw_writel(standby_reg_tcon, S3C2410_TCON);
- __raw_writel(standby_reg_tcfg0, S3C2410_TCFG0);
- __raw_writel(standby_reg_tcfg1, S3C2410_TCFG1);
-
- return 0;
-}
-#else
-#define s3c24xx_pwm_suspend NULL
-#define s3c24xx_pwm_resume NULL
-#endif
-
-static struct platform_driver s3c24xx_pwm_driver = {
- .driver = {
- .name = "s3c24xx_pwm",
- .owner = THIS_MODULE,
- },
- .probe = s3c24xx_pwm_probe,
- .suspend = s3c24xx_pwm_suspend,
- .resume = s3c24xx_pwm_resume,
-};
-
-static int __init s3c24xx_pwm_init(void)
-{
- return platform_driver_register(&s3c24xx_pwm_driver);
-}
-
-static void __exit s3c24xx_pwm_exit(void)
-{
-}
-
-MODULE_AUTHOR("Javi Roman <javiroman@kernel-labs.org>");
-MODULE_LICENSE("GPL");
-
-module_init(s3c24xx_pwm_init);
-module_exit(s3c24xx_pwm_exit);
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-20 02:43:50 +0000