Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 82 insertions, 0 deletions

diff --git a/drivers/gpu/drm/shmobile/shmob_drm_backlight.c b/drivers/gpu/drm/shmobile/shmob_drm_backlight.c
new file mode 100644
index 000000000..794573bad
--- /dev/null
+++ b/drivers/gpu/drm/shmobile/shmob_drm_backlight.c
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * shmob_drm_backlight.c  --  SH Mobile DRM Backlight
+ *
+ * Copyright (C) 2012 Renesas Electronics Corporation
+ *
+ * Laurent Pinchart (laurent.pinchart@ideasonboard.com)
+ */
+
+#include <linux/backlight.h>
+
+#include "shmob_drm_backlight.h"
+#include "shmob_drm_crtc.h"
+#include "shmob_drm_drv.h"
+
+static int shmob_drm_backlight_update(struct backlight_device *bdev)
+{
+	struct shmob_drm_connector *scon = bl_get_data(bdev);
+	struct shmob_drm_device *sdev = scon->connector.dev->dev_private;
+	const struct shmob_drm_backlight_data *bdata = &sdev->pdata->backlight;
+	int brightness = backlight_get_brightness(bdev);
+
+	return bdata->set_brightness(brightness);
+}
+
+static int shmob_drm_backlight_get_brightness(struct backlight_device *bdev)
+{
+	struct shmob_drm_connector *scon = bl_get_data(bdev);
+	struct shmob_drm_device *sdev = scon->connector.dev->dev_private;
+	const struct shmob_drm_backlight_data *bdata = &sdev->pdata->backlight;
+
+	return bdata->get_brightness();
+}
+
+static const struct backlight_ops shmob_drm_backlight_ops = {
+	.options	= BL_CORE_SUSPENDRESUME,
+	.update_status	= shmob_drm_backlight_update,
+	.get_brightness	= shmob_drm_backlight_get_brightness,
+};
+
+void shmob_drm_backlight_dpms(struct shmob_drm_connector *scon, int mode)
+{
+	if (scon->backlight == NULL)
+		return;
+
+	scon->backlight->props.power = mode == DRM_MODE_DPMS_ON
+				     ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN;
+	backlight_update_status(scon->backlight);
+}
+
+int shmob_drm_backlight_init(struct shmob_drm_connector *scon)
+{
+	struct shmob_drm_device *sdev = scon->connector.dev->dev_private;
+	const struct shmob_drm_backlight_data *bdata = &sdev->pdata->backlight;
+	struct drm_connector *connector = &scon->connector;
+	struct drm_device *dev = connector->dev;
+	struct backlight_device *backlight;
+
+	if (!bdata->max_brightness)
+		return 0;
+
+	backlight = backlight_device_register(bdata->name, dev->dev, scon,
+					      &shmob_drm_backlight_ops, NULL);
+	if (IS_ERR(backlight)) {
+		dev_err(dev->dev, "unable to register backlight device: %ld\n",
+			PTR_ERR(backlight));
+		return PTR_ERR(backlight);
+	}
+
+	backlight->props.max_brightness = bdata->max_brightness;
+	backlight->props.brightness = bdata->max_brightness;
+	backlight->props.power = FB_BLANK_POWERDOWN;
+	backlight_update_status(backlight);
+
+	scon->backlight = backlight;
+	return 0;
+}
+
+void shmob_drm_backlight_exit(struct shmob_drm_connector *scon)
+{
+	backlight_device_unregister(scon->backlight);
+}