2016-12-02 10:50:26 +00:00
|
|
|
From b948504b2bfdcb24e774c8801ee6d118e5e3ca90 Mon Sep 17 00:00:00 2001
|
2016-09-10 12:54:26 +00:00
|
|
|
From: Eric Anholt <eric@anholt.net>
|
|
|
|
|
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 <eric@anholt.net>
|
|
|
|
|
---
|
|
|
|
|
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)
|
