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@@ -379,6 +379,39 @@ static int __devexit s3c_pwm_remove(struct platform_device *pdev)
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return 0;
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}
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+#ifdef CONFIG_PM
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+static int s3c_pwm_suspend(struct platform_device *pdev, pm_message_t state)
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+{
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+ struct pwm_device *pwm = platform_get_drvdata(pdev);
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+
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+ /* No one preserve these values during suspend so reset them
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+ * Otherwise driver leaves PWM unconfigured if same values
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+ * passed to pwm_config
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+ */
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+ pwm->period_ns = 0;
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+ pwm->duty_ns = 0;
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+
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+ return 0;
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+}
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+
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+static int s3c_pwm_resume(struct platform_device *pdev)
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+{
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+ struct pwm_device *pwm = platform_get_drvdata(pdev);
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+ unsigned long tcon;
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+
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+ /* Restore invertion */
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+ tcon = __raw_readl(S3C2410_TCON);
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+ tcon |= pwm_tcon_invert(pwm);
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+ __raw_writel(tcon, S3C2410_TCON);
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+
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+ return 0;
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+}
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+
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+#else
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+#define s3c_pwm_suspend NULL
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+#define s3c_pwm_resume NULL
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+#endif
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+
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static struct platform_driver s3c_pwm_driver = {
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.driver = {
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.name = "s3c24xx-pwm",
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@@ -386,6 +419,8 @@ static struct platform_driver s3c_pwm_driver = {
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},
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.probe = s3c_pwm_probe,
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.remove = __devexit_p(s3c_pwm_remove),
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+ .suspend = s3c_pwm_suspend,
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+ .resume = s3c_pwm_resume,
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};
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static int __init pwm_init(void)
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Linus Torvalds