NFC: trf7970a: Add System Suspend/Resume support
Add system suspend/resume support by gracefully shutting things down when suspending and bringing the device back to full power when resuming. Signed-off-by: Mark A. Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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@ -1594,6 +1594,42 @@ static int trf7970a_remove(struct spi_device *spi)
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return 0;
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return 0;
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}
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}
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#ifdef CONFIG_PM_SLEEP
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static int trf7970a_suspend(struct device *dev)
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{
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struct spi_device *spi = container_of(dev, struct spi_device, dev);
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struct trf7970a *trf = spi_get_drvdata(spi);
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int ret = 0;
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dev_dbg(dev, "Suspend\n");
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mutex_lock(&trf->lock);
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trf7970a_shutdown(trf);
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mutex_unlock(&trf->lock);
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return ret;
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}
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static int trf7970a_resume(struct device *dev)
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{
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struct spi_device *spi = container_of(dev, struct spi_device, dev);
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struct trf7970a *trf = spi_get_drvdata(spi);
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int ret = 0;
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dev_dbg(dev, "Resume\n");
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mutex_lock(&trf->lock);
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ret = trf7970a_startup(trf);
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mutex_unlock(&trf->lock);
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return ret;
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}
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#endif
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#ifdef CONFIG_PM_RUNTIME
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#ifdef CONFIG_PM_RUNTIME
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static int trf7970a_pm_runtime_suspend(struct device *dev)
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static int trf7970a_pm_runtime_suspend(struct device *dev)
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{
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{
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@ -1629,6 +1665,7 @@ static int trf7970a_pm_runtime_resume(struct device *dev)
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#endif
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#endif
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static const struct dev_pm_ops trf7970a_pm_ops = {
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static const struct dev_pm_ops trf7970a_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(trf7970a_suspend, trf7970a_resume)
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SET_RUNTIME_PM_OPS(trf7970a_pm_runtime_suspend,
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SET_RUNTIME_PM_OPS(trf7970a_pm_runtime_suspend,
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trf7970a_pm_runtime_resume, NULL)
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trf7970a_pm_runtime_resume, NULL)
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};
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};
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