diff options
Diffstat (limited to 'drivers/spi/spi.c')
-rw-r--r-- | drivers/spi/spi.c | 121 |
1 files changed, 5 insertions, 116 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 57a195041dc7..d5d7d2235163 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -16,7 +16,6 @@ */ #include <linux/kernel.h> -#include <linux/kmod.h> #include <linux/device.h> #include <linux/init.h> #include <linux/cache.h> @@ -129,125 +128,11 @@ static int spi_uevent(struct device *dev, struct kobj_uevent_env *env) return 0; } -#ifdef CONFIG_PM_SLEEP -static int spi_legacy_suspend(struct device *dev, pm_message_t message) -{ - int value = 0; - struct spi_driver *drv = to_spi_driver(dev->driver); - - /* suspend will stop irqs and dma; no more i/o */ - if (drv) { - if (drv->suspend) - value = drv->suspend(to_spi_device(dev), message); - else - dev_dbg(dev, "... can't suspend\n"); - } - return value; -} - -static int spi_legacy_resume(struct device *dev) -{ - int value = 0; - struct spi_driver *drv = to_spi_driver(dev->driver); - - /* resume may restart the i/o queue */ - if (drv) { - if (drv->resume) - value = drv->resume(to_spi_device(dev)); - else - dev_dbg(dev, "... can't resume\n"); - } - return value; -} - -static int spi_pm_suspend(struct device *dev) -{ - const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - - if (pm) - return pm_generic_suspend(dev); - else - return spi_legacy_suspend(dev, PMSG_SUSPEND); -} - -static int spi_pm_resume(struct device *dev) -{ - const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - - if (pm) - return pm_generic_resume(dev); - else - return spi_legacy_resume(dev); -} - -static int spi_pm_freeze(struct device *dev) -{ - const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - - if (pm) - return pm_generic_freeze(dev); - else - return spi_legacy_suspend(dev, PMSG_FREEZE); -} - -static int spi_pm_thaw(struct device *dev) -{ - const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - - if (pm) - return pm_generic_thaw(dev); - else - return spi_legacy_resume(dev); -} - -static int spi_pm_poweroff(struct device *dev) -{ - const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - - if (pm) - return pm_generic_poweroff(dev); - else - return spi_legacy_suspend(dev, PMSG_HIBERNATE); -} - -static int spi_pm_restore(struct device *dev) -{ - const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL; - - if (pm) - return pm_generic_restore(dev); - else - return spi_legacy_resume(dev); -} -#else -#define spi_pm_suspend NULL -#define spi_pm_resume NULL -#define spi_pm_freeze NULL -#define spi_pm_thaw NULL -#define spi_pm_poweroff NULL -#define spi_pm_restore NULL -#endif - -static const struct dev_pm_ops spi_pm = { - .suspend = spi_pm_suspend, - .resume = spi_pm_resume, - .freeze = spi_pm_freeze, - .thaw = spi_pm_thaw, - .poweroff = spi_pm_poweroff, - .restore = spi_pm_restore, - SET_RUNTIME_PM_OPS( - pm_generic_runtime_suspend, - pm_generic_runtime_resume, - NULL - ) -}; - struct bus_type spi_bus_type = { .name = "spi", .dev_groups = spi_dev_groups, .match = spi_match_device, .uevent = spi_uevent, - .pm = &spi_pm, }; EXPORT_SYMBOL_GPL(spi_bus_type); @@ -851,6 +736,9 @@ out: if (msg->status == -EINPROGRESS) msg->status = ret; + if (msg->status && master->handle_err) + master->handle_err(master, msg); + spi_finalize_current_message(master); return ret; @@ -1360,7 +1248,6 @@ of_register_spi_device(struct spi_master *master, struct device_node *nc) spi->dev.of_node = nc; /* Register the new device */ - request_module("%s%s", SPI_MODULE_PREFIX, spi->modalias); rc = spi_add_device(spi); if (rc) { dev_err(&master->dev, "spi_device register error %s\n", @@ -1894,6 +1781,8 @@ int spi_setup(struct spi_device *spi) if (!spi->max_speed_hz) spi->max_speed_hz = spi->master->max_speed_hz; + spi_set_cs(spi, false); + if (spi->master->setup) status = spi->master->setup(spi); |