pwm: samsung: Rename to pwm-samsung-legacy
authorTomasz Figa <tomasz.figa@gmail.com>
Fri, 5 Apr 2013 23:08:03 +0000 (01:08 +0200)
committerTomasz Figa <tomasz.figa@gmail.com>
Mon, 5 Aug 2013 23:21:49 +0000 (01:21 +0200)
This patch renames the old pwm-samsung driver to pwm-samsung-legacy to
create place for the new, rewritten, DT-aware pwm-samsung driver.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Mark Brown <broonie@linaro.org>
Tested-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
drivers/pwm/Makefile
drivers/pwm/pwm-samsung-legacy.c [new file with mode: 0644]
drivers/pwm/pwm-samsung.c [deleted file]

index 77a8c185c5b2b46c6a4afe0e0a45bc8d5dd772d0..aa94807b7d615bf34a67a58ef1ca5dc8d6c574a0 100644 (file)
@@ -11,7 +11,7 @@ obj-$(CONFIG_PWM_PCA9685)     += pwm-pca9685.o
 obj-$(CONFIG_PWM_PUV3)         += pwm-puv3.o
 obj-$(CONFIG_PWM_PXA)          += pwm-pxa.o
 obj-$(CONFIG_PWM_RENESAS_TPU)  += pwm-renesas-tpu.o
-obj-$(CONFIG_PWM_SAMSUNG)      += pwm-samsung.o
+obj-$(CONFIG_PWM_SAMSUNG)      += pwm-samsung-legacy.o
 obj-$(CONFIG_PWM_SPEAR)                += pwm-spear.o
 obj-$(CONFIG_PWM_TEGRA)                += pwm-tegra.o
 obj-$(CONFIG_PWM_TIECAP)       += pwm-tiecap.o
diff --git a/drivers/pwm/pwm-samsung-legacy.c b/drivers/pwm/pwm-samsung-legacy.c
new file mode 100644 (file)
index 0000000..a0ece50
--- /dev/null
@@ -0,0 +1,353 @@
+/* drivers/pwm/pwm-samsung.c
+ *
+ * Copyright (c) 2007 Ben Dooks
+ * Copyright (c) 2008 Simtec Electronics
+ *     Ben Dooks <ben@simtec.co.uk>, <ben-linux@fluff.org>
+ *
+ * S3C series PWM device core
+ *
+ * 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.
+*/
+
+#define pr_fmt(fmt) "pwm-samsung: " fmt
+
+#include <linux/export.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/pwm.h>
+
+#include <mach/map.h>
+
+#include <plat/regs-timer.h>
+
+struct s3c_chip {
+       struct platform_device  *pdev;
+
+       struct clk              *clk_div;
+       struct clk              *clk;
+       const char              *label;
+
+       unsigned int             period_ns;
+       unsigned int             duty_ns;
+
+       unsigned char            tcon_base;
+       unsigned char            pwm_id;
+       struct pwm_chip          chip;
+};
+
+#define to_s3c_chip(chip)      container_of(chip, struct s3c_chip, chip)
+
+#define pwm_dbg(_pwm, msg...) dev_dbg(&(_pwm)->pdev->dev, msg)
+
+static struct clk *clk_scaler[2];
+
+static inline int pwm_is_tdiv(struct s3c_chip *chip)
+{
+       return clk_get_parent(chip->clk) == chip->clk_div;
+}
+
+#define pwm_tcon_start(pwm) (1 << (pwm->tcon_base + 0))
+#define pwm_tcon_invert(pwm) (1 << (pwm->tcon_base + 2))
+#define pwm_tcon_autoreload(pwm) (1 << (pwm->tcon_base + 3))
+#define pwm_tcon_manulupdate(pwm) (1 << (pwm->tcon_base + 1))
+
+static int s3c_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
+{
+       struct s3c_chip *s3c = to_s3c_chip(chip);
+       unsigned long flags;
+       unsigned long tcon;
+
+       local_irq_save(flags);
+
+       tcon = __raw_readl(S3C2410_TCON);
+       tcon |= pwm_tcon_start(s3c);
+       __raw_writel(tcon, S3C2410_TCON);
+
+       local_irq_restore(flags);
+
+       return 0;
+}
+
+static void s3c_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
+{
+       struct s3c_chip *s3c = to_s3c_chip(chip);
+       unsigned long flags;
+       unsigned long tcon;
+
+       local_irq_save(flags);
+
+       tcon = __raw_readl(S3C2410_TCON);
+       tcon &= ~pwm_tcon_start(s3c);
+       __raw_writel(tcon, S3C2410_TCON);
+
+       local_irq_restore(flags);
+}
+
+static unsigned long pwm_calc_tin(struct s3c_chip *s3c, unsigned long freq)
+{
+       unsigned long tin_parent_rate;
+       unsigned int div;
+
+       tin_parent_rate = clk_get_rate(clk_get_parent(s3c->clk_div));
+       pwm_dbg(s3c, "tin parent at %lu\n", tin_parent_rate);
+
+       for (div = 2; div <= 16; div *= 2) {
+               if ((tin_parent_rate / (div << 16)) < freq)
+                       return tin_parent_rate / div;
+       }
+
+       return tin_parent_rate / 16;
+}
+
+#define NS_IN_HZ (1000000000UL)
+
+static int s3c_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
+               int duty_ns, int period_ns)
+{
+       struct s3c_chip *s3c = to_s3c_chip(chip);
+       unsigned long tin_rate;
+       unsigned long tin_ns;
+       unsigned long period;
+       unsigned long flags;
+       unsigned long tcon;
+       unsigned long tcnt;
+       long tcmp;
+
+       /* We currently avoid using 64bit arithmetic by using the
+        * fact that anything faster than 1Hz is easily representable
+        * by 32bits. */
+
+       if (period_ns > NS_IN_HZ || duty_ns > NS_IN_HZ)
+               return -ERANGE;
+
+       if (period_ns == s3c->period_ns &&
+           duty_ns == s3c->duty_ns)
+               return 0;
+
+       /* The TCMP and TCNT can be read without a lock, they're not
+        * shared between the timers. */
+
+       tcmp = __raw_readl(S3C2410_TCMPB(s3c->pwm_id));
+       tcnt = __raw_readl(S3C2410_TCNTB(s3c->pwm_id));
+
+       period = NS_IN_HZ / period_ns;
+
+       pwm_dbg(s3c, "duty_ns=%d, period_ns=%d (%lu)\n",
+               duty_ns, period_ns, period);
+
+       /* Check to see if we are changing the clock rate of the PWM */
+
+       if (s3c->period_ns != period_ns) {
+               if (pwm_is_tdiv(s3c)) {
+                       tin_rate = pwm_calc_tin(s3c, period);
+                       clk_set_rate(s3c->clk_div, tin_rate);
+               } else
+                       tin_rate = clk_get_rate(s3c->clk);
+
+               s3c->period_ns = period_ns;
+
+               pwm_dbg(s3c, "tin_rate=%lu\n", tin_rate);
+
+               tin_ns = NS_IN_HZ / tin_rate;
+               tcnt = period_ns / tin_ns;
+       } else
+               tin_ns = NS_IN_HZ / clk_get_rate(s3c->clk);
+
+       /* Note, counters count down */
+
+       tcmp = duty_ns / tin_ns;
+       tcmp = tcnt - tcmp;
+       /* the pwm hw only checks the compare register after a decrement,
+          so the pin never toggles if tcmp = tcnt */
+       if (tcmp == tcnt)
+               tcmp--;
+
+       pwm_dbg(s3c, "tin_ns=%lu, tcmp=%ld/%lu\n", tin_ns, tcmp, tcnt);
+
+       if (tcmp < 0)
+               tcmp = 0;
+
+       /* Update the PWM register block. */
+
+       local_irq_save(flags);
+
+       __raw_writel(tcmp, S3C2410_TCMPB(s3c->pwm_id));
+       __raw_writel(tcnt, S3C2410_TCNTB(s3c->pwm_id));
+
+       tcon = __raw_readl(S3C2410_TCON);
+       tcon |= pwm_tcon_manulupdate(s3c);
+       tcon |= pwm_tcon_autoreload(s3c);
+       __raw_writel(tcon, S3C2410_TCON);
+
+       tcon &= ~pwm_tcon_manulupdate(s3c);
+       __raw_writel(tcon, S3C2410_TCON);
+
+       local_irq_restore(flags);
+
+       return 0;
+}
+
+static struct pwm_ops s3c_pwm_ops = {
+       .enable = s3c_pwm_enable,
+       .disable = s3c_pwm_disable,
+       .config = s3c_pwm_config,
+       .owner = THIS_MODULE,
+};
+
+static int s3c_pwm_probe(struct platform_device *pdev)
+{
+       struct device *dev = &pdev->dev;
+       struct s3c_chip *s3c;
+       unsigned long flags;
+       unsigned long tcon;
+       unsigned int id = pdev->id;
+       int ret;
+
+       if (id == 4) {
+               dev_err(dev, "TIMER4 is currently not supported\n");
+               return -ENXIO;
+       }
+
+       s3c = devm_kzalloc(&pdev->dev, sizeof(*s3c), GFP_KERNEL);
+       if (s3c == NULL) {
+               dev_err(dev, "failed to allocate pwm_device\n");
+               return -ENOMEM;
+       }
+
+       /* calculate base of control bits in TCON */
+       s3c->tcon_base = id == 0 ? 0 : (id * 4) + 4;
+       s3c->pwm_id = id;
+       s3c->chip.dev = &pdev->dev;
+       s3c->chip.ops = &s3c_pwm_ops;
+       s3c->chip.base = -1;
+       s3c->chip.npwm = 1;
+
+       s3c->clk = devm_clk_get(dev, "pwm-tin");
+       if (IS_ERR(s3c->clk)) {
+               dev_err(dev, "failed to get pwm tin clk\n");
+               return PTR_ERR(s3c->clk);
+       }
+
+       s3c->clk_div = devm_clk_get(dev, "pwm-tdiv");
+       if (IS_ERR(s3c->clk_div)) {
+               dev_err(dev, "failed to get pwm tdiv clk\n");
+               return PTR_ERR(s3c->clk_div);
+       }
+
+       clk_enable(s3c->clk);
+       clk_enable(s3c->clk_div);
+
+       local_irq_save(flags);
+
+       tcon = __raw_readl(S3C2410_TCON);
+       tcon |= pwm_tcon_invert(s3c);
+       __raw_writel(tcon, S3C2410_TCON);
+
+       local_irq_restore(flags);
+
+       ret = pwmchip_add(&s3c->chip);
+       if (ret < 0) {
+               dev_err(dev, "failed to register pwm\n");
+               goto err_clk_tdiv;
+       }
+
+       pwm_dbg(s3c, "config bits %02x\n",
+               (__raw_readl(S3C2410_TCON) >> s3c->tcon_base) & 0x0f);
+
+       dev_info(dev, "tin at %lu, tdiv at %lu, tin=%sclk, base %d\n",
+                clk_get_rate(s3c->clk),
+                clk_get_rate(s3c->clk_div),
+                pwm_is_tdiv(s3c) ? "div" : "ext", s3c->tcon_base);
+
+       platform_set_drvdata(pdev, s3c);
+       return 0;
+
+ err_clk_tdiv:
+       clk_disable(s3c->clk_div);
+       clk_disable(s3c->clk);
+       return ret;
+}
+
+static int s3c_pwm_remove(struct platform_device *pdev)
+{
+       struct s3c_chip *s3c = platform_get_drvdata(pdev);
+       int err;
+
+       err = pwmchip_remove(&s3c->chip);
+       if (err < 0)
+               return err;
+
+       clk_disable(s3c->clk_div);
+       clk_disable(s3c->clk);
+
+       return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int s3c_pwm_suspend(struct device *dev)
+{
+       struct s3c_chip *s3c = dev_get_drvdata(dev);
+
+       /* No one preserve these values during suspend so reset them
+        * Otherwise driver leaves PWM unconfigured if same values
+        * passed to pwm_config
+        */
+       s3c->period_ns = 0;
+       s3c->duty_ns = 0;
+
+       return 0;
+}
+
+static int s3c_pwm_resume(struct device *dev)
+{
+       struct s3c_chip *s3c = dev_get_drvdata(dev);
+       unsigned long tcon;
+
+       /* Restore invertion */
+       tcon = __raw_readl(S3C2410_TCON);
+       tcon |= pwm_tcon_invert(s3c);
+       __raw_writel(tcon, S3C2410_TCON);
+
+       return 0;
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(s3c_pwm_pm_ops, s3c_pwm_suspend,
+                       s3c_pwm_resume);
+
+static struct platform_driver s3c_pwm_driver = {
+       .driver         = {
+               .name   = "s3c24xx-pwm",
+               .owner  = THIS_MODULE,
+               .pm     = &s3c_pwm_pm_ops,
+       },
+       .probe          = s3c_pwm_probe,
+       .remove         = s3c_pwm_remove,
+};
+
+static int __init pwm_init(void)
+{
+       int ret;
+
+       clk_scaler[0] = clk_get(NULL, "pwm-scaler0");
+       clk_scaler[1] = clk_get(NULL, "pwm-scaler1");
+
+       if (IS_ERR(clk_scaler[0]) || IS_ERR(clk_scaler[1])) {
+               pr_err("failed to get scaler clocks\n");
+               return -EINVAL;
+       }
+
+       ret = platform_driver_register(&s3c_pwm_driver);
+       if (ret)
+               pr_err("failed to add pwm driver\n");
+
+       return ret;
+}
+
+arch_initcall(pwm_init);
diff --git a/drivers/pwm/pwm-samsung.c b/drivers/pwm/pwm-samsung.c
deleted file mode 100644 (file)
index a0ece50..0000000
+++ /dev/null
@@ -1,353 +0,0 @@
-/* drivers/pwm/pwm-samsung.c
- *
- * Copyright (c) 2007 Ben Dooks
- * Copyright (c) 2008 Simtec Electronics
- *     Ben Dooks <ben@simtec.co.uk>, <ben-linux@fluff.org>
- *
- * S3C series PWM device core
- *
- * 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.
-*/
-
-#define pr_fmt(fmt) "pwm-samsung: " fmt
-
-#include <linux/export.h>
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/pwm.h>
-
-#include <mach/map.h>
-
-#include <plat/regs-timer.h>
-
-struct s3c_chip {
-       struct platform_device  *pdev;
-
-       struct clk              *clk_div;
-       struct clk              *clk;
-       const char              *label;
-
-       unsigned int             period_ns;
-       unsigned int             duty_ns;
-
-       unsigned char            tcon_base;
-       unsigned char            pwm_id;
-       struct pwm_chip          chip;
-};
-
-#define to_s3c_chip(chip)      container_of(chip, struct s3c_chip, chip)
-
-#define pwm_dbg(_pwm, msg...) dev_dbg(&(_pwm)->pdev->dev, msg)
-
-static struct clk *clk_scaler[2];
-
-static inline int pwm_is_tdiv(struct s3c_chip *chip)
-{
-       return clk_get_parent(chip->clk) == chip->clk_div;
-}
-
-#define pwm_tcon_start(pwm) (1 << (pwm->tcon_base + 0))
-#define pwm_tcon_invert(pwm) (1 << (pwm->tcon_base + 2))
-#define pwm_tcon_autoreload(pwm) (1 << (pwm->tcon_base + 3))
-#define pwm_tcon_manulupdate(pwm) (1 << (pwm->tcon_base + 1))
-
-static int s3c_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm)
-{
-       struct s3c_chip *s3c = to_s3c_chip(chip);
-       unsigned long flags;
-       unsigned long tcon;
-
-       local_irq_save(flags);
-
-       tcon = __raw_readl(S3C2410_TCON);
-       tcon |= pwm_tcon_start(s3c);
-       __raw_writel(tcon, S3C2410_TCON);
-
-       local_irq_restore(flags);
-
-       return 0;
-}
-
-static void s3c_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm)
-{
-       struct s3c_chip *s3c = to_s3c_chip(chip);
-       unsigned long flags;
-       unsigned long tcon;
-
-       local_irq_save(flags);
-
-       tcon = __raw_readl(S3C2410_TCON);
-       tcon &= ~pwm_tcon_start(s3c);
-       __raw_writel(tcon, S3C2410_TCON);
-
-       local_irq_restore(flags);
-}
-
-static unsigned long pwm_calc_tin(struct s3c_chip *s3c, unsigned long freq)
-{
-       unsigned long tin_parent_rate;
-       unsigned int div;
-
-       tin_parent_rate = clk_get_rate(clk_get_parent(s3c->clk_div));
-       pwm_dbg(s3c, "tin parent at %lu\n", tin_parent_rate);
-
-       for (div = 2; div <= 16; div *= 2) {
-               if ((tin_parent_rate / (div << 16)) < freq)
-                       return tin_parent_rate / div;
-       }
-
-       return tin_parent_rate / 16;
-}
-
-#define NS_IN_HZ (1000000000UL)
-
-static int s3c_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm,
-               int duty_ns, int period_ns)
-{
-       struct s3c_chip *s3c = to_s3c_chip(chip);
-       unsigned long tin_rate;
-       unsigned long tin_ns;
-       unsigned long period;
-       unsigned long flags;
-       unsigned long tcon;
-       unsigned long tcnt;
-       long tcmp;
-
-       /* We currently avoid using 64bit arithmetic by using the
-        * fact that anything faster than 1Hz is easily representable
-        * by 32bits. */
-
-       if (period_ns > NS_IN_HZ || duty_ns > NS_IN_HZ)
-               return -ERANGE;
-
-       if (period_ns == s3c->period_ns &&
-           duty_ns == s3c->duty_ns)
-               return 0;
-
-       /* The TCMP and TCNT can be read without a lock, they're not
-        * shared between the timers. */
-
-       tcmp = __raw_readl(S3C2410_TCMPB(s3c->pwm_id));
-       tcnt = __raw_readl(S3C2410_TCNTB(s3c->pwm_id));
-
-       period = NS_IN_HZ / period_ns;
-
-       pwm_dbg(s3c, "duty_ns=%d, period_ns=%d (%lu)\n",
-               duty_ns, period_ns, period);
-
-       /* Check to see if we are changing the clock rate of the PWM */
-
-       if (s3c->period_ns != period_ns) {
-               if (pwm_is_tdiv(s3c)) {
-                       tin_rate = pwm_calc_tin(s3c, period);
-                       clk_set_rate(s3c->clk_div, tin_rate);
-               } else
-                       tin_rate = clk_get_rate(s3c->clk);
-
-               s3c->period_ns = period_ns;
-
-               pwm_dbg(s3c, "tin_rate=%lu\n", tin_rate);
-
-               tin_ns = NS_IN_HZ / tin_rate;
-               tcnt = period_ns / tin_ns;
-       } else
-               tin_ns = NS_IN_HZ / clk_get_rate(s3c->clk);
-
-       /* Note, counters count down */
-
-       tcmp = duty_ns / tin_ns;
-       tcmp = tcnt - tcmp;
-       /* the pwm hw only checks the compare register after a decrement,
-          so the pin never toggles if tcmp = tcnt */
-       if (tcmp == tcnt)
-               tcmp--;
-
-       pwm_dbg(s3c, "tin_ns=%lu, tcmp=%ld/%lu\n", tin_ns, tcmp, tcnt);
-
-       if (tcmp < 0)
-               tcmp = 0;
-
-       /* Update the PWM register block. */
-
-       local_irq_save(flags);
-
-       __raw_writel(tcmp, S3C2410_TCMPB(s3c->pwm_id));
-       __raw_writel(tcnt, S3C2410_TCNTB(s3c->pwm_id));
-
-       tcon = __raw_readl(S3C2410_TCON);
-       tcon |= pwm_tcon_manulupdate(s3c);
-       tcon |= pwm_tcon_autoreload(s3c);
-       __raw_writel(tcon, S3C2410_TCON);
-
-       tcon &= ~pwm_tcon_manulupdate(s3c);
-       __raw_writel(tcon, S3C2410_TCON);
-
-       local_irq_restore(flags);
-
-       return 0;
-}
-
-static struct pwm_ops s3c_pwm_ops = {
-       .enable = s3c_pwm_enable,
-       .disable = s3c_pwm_disable,
-       .config = s3c_pwm_config,
-       .owner = THIS_MODULE,
-};
-
-static int s3c_pwm_probe(struct platform_device *pdev)
-{
-       struct device *dev = &pdev->dev;
-       struct s3c_chip *s3c;
-       unsigned long flags;
-       unsigned long tcon;
-       unsigned int id = pdev->id;
-       int ret;
-
-       if (id == 4) {
-               dev_err(dev, "TIMER4 is currently not supported\n");
-               return -ENXIO;
-       }
-
-       s3c = devm_kzalloc(&pdev->dev, sizeof(*s3c), GFP_KERNEL);
-       if (s3c == NULL) {
-               dev_err(dev, "failed to allocate pwm_device\n");
-               return -ENOMEM;
-       }
-
-       /* calculate base of control bits in TCON */
-       s3c->tcon_base = id == 0 ? 0 : (id * 4) + 4;
-       s3c->pwm_id = id;
-       s3c->chip.dev = &pdev->dev;
-       s3c->chip.ops = &s3c_pwm_ops;
-       s3c->chip.base = -1;
-       s3c->chip.npwm = 1;
-
-       s3c->clk = devm_clk_get(dev, "pwm-tin");
-       if (IS_ERR(s3c->clk)) {
-               dev_err(dev, "failed to get pwm tin clk\n");
-               return PTR_ERR(s3c->clk);
-       }
-
-       s3c->clk_div = devm_clk_get(dev, "pwm-tdiv");
-       if (IS_ERR(s3c->clk_div)) {
-               dev_err(dev, "failed to get pwm tdiv clk\n");
-               return PTR_ERR(s3c->clk_div);
-       }
-
-       clk_enable(s3c->clk);
-       clk_enable(s3c->clk_div);
-
-       local_irq_save(flags);
-
-       tcon = __raw_readl(S3C2410_TCON);
-       tcon |= pwm_tcon_invert(s3c);
-       __raw_writel(tcon, S3C2410_TCON);
-
-       local_irq_restore(flags);
-
-       ret = pwmchip_add(&s3c->chip);
-       if (ret < 0) {
-               dev_err(dev, "failed to register pwm\n");
-               goto err_clk_tdiv;
-       }
-
-       pwm_dbg(s3c, "config bits %02x\n",
-               (__raw_readl(S3C2410_TCON) >> s3c->tcon_base) & 0x0f);
-
-       dev_info(dev, "tin at %lu, tdiv at %lu, tin=%sclk, base %d\n",
-                clk_get_rate(s3c->clk),
-                clk_get_rate(s3c->clk_div),
-                pwm_is_tdiv(s3c) ? "div" : "ext", s3c->tcon_base);
-
-       platform_set_drvdata(pdev, s3c);
-       return 0;
-
- err_clk_tdiv:
-       clk_disable(s3c->clk_div);
-       clk_disable(s3c->clk);
-       return ret;
-}
-
-static int s3c_pwm_remove(struct platform_device *pdev)
-{
-       struct s3c_chip *s3c = platform_get_drvdata(pdev);
-       int err;
-
-       err = pwmchip_remove(&s3c->chip);
-       if (err < 0)
-               return err;
-
-       clk_disable(s3c->clk_div);
-       clk_disable(s3c->clk);
-
-       return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int s3c_pwm_suspend(struct device *dev)
-{
-       struct s3c_chip *s3c = dev_get_drvdata(dev);
-
-       /* No one preserve these values during suspend so reset them
-        * Otherwise driver leaves PWM unconfigured if same values
-        * passed to pwm_config
-        */
-       s3c->period_ns = 0;
-       s3c->duty_ns = 0;
-
-       return 0;
-}
-
-static int s3c_pwm_resume(struct device *dev)
-{
-       struct s3c_chip *s3c = dev_get_drvdata(dev);
-       unsigned long tcon;
-
-       /* Restore invertion */
-       tcon = __raw_readl(S3C2410_TCON);
-       tcon |= pwm_tcon_invert(s3c);
-       __raw_writel(tcon, S3C2410_TCON);
-
-       return 0;
-}
-#endif
-
-static SIMPLE_DEV_PM_OPS(s3c_pwm_pm_ops, s3c_pwm_suspend,
-                       s3c_pwm_resume);
-
-static struct platform_driver s3c_pwm_driver = {
-       .driver         = {
-               .name   = "s3c24xx-pwm",
-               .owner  = THIS_MODULE,
-               .pm     = &s3c_pwm_pm_ops,
-       },
-       .probe          = s3c_pwm_probe,
-       .remove         = s3c_pwm_remove,
-};
-
-static int __init pwm_init(void)
-{
-       int ret;
-
-       clk_scaler[0] = clk_get(NULL, "pwm-scaler0");
-       clk_scaler[1] = clk_get(NULL, "pwm-scaler1");
-
-       if (IS_ERR(clk_scaler[0]) || IS_ERR(clk_scaler[1])) {
-               pr_err("failed to get scaler clocks\n");
-               return -EINVAL;
-       }
-
-       ret = platform_driver_register(&s3c_pwm_driver);
-       if (ret)
-               pr_err("failed to add pwm driver\n");
-
-       return ret;
-}
-
-arch_initcall(pwm_init);