From e46450e232a96665344b825557bacf1d37842174 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 9 Aug 2016 15:13:33 -0700 Subject: [PATCH] drm: Emit modalias uevents for the DSI devices we create. This gets the Raspberry Pi panel module to automatically load at boot time. Signed-off-by: Eric Anholt --- drivers/gpu/drm/drm_mipi_dsi.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -50,6 +50,24 @@ static int mipi_dsi_device_match(struct return of_driver_match_device(dev, drv); } +/** + * Send modalias events when devices are created on the bus, so that + * modules can load automatically. + */ +static int mipi_dsi_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + int rc; + + /* Just do the OF uevent, which emits the compatible string so + * that a MODULE_DEVICE_TABLE(of, ...) works. + */ + rc = of_device_uevent_modalias(dev, env); + if (rc != -ENODEV) + return rc; + + return 0; +} + static const struct dev_pm_ops mipi_dsi_device_pm_ops = { .runtime_suspend = pm_generic_runtime_suspend, .runtime_resume = pm_generic_runtime_resume, @@ -65,6 +83,7 @@ static struct bus_type mipi_dsi_bus_type .name = "mipi-dsi", .match = mipi_dsi_device_match, .pm = &mipi_dsi_device_pm_ops, + .uevent = mipi_dsi_uevent, }; static int of_device_match(struct device *dev, void *data)