MFC r310593,r310599:

  r310593:
    Fix late monitor hotplug event.  If system starts without attached monitor,
    DRM create framebuffer for VT console. Later, when monitor is attached, the
    hotplug event must issue full modeset procedure to setup CRTC.  In original
    code, this was done in drm_fb_helper_set_par(), but we don't have this
    function implemented yet. Use unrolled version of drm_fb_helper_set_par()
    to ensure same functionality.
  r310599:
    Import drm_patform.c, an implementation of non-PCI based attachment for
    graphics drivers.  It will be used in upcoming driver for Nvidia Tegra
    boards.

4 files changed, 210 insertions, 0 deletions

diff --git a/sys/conf/files b/sys/conf/files
index 885bb2e..a98da70 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -1477,6 +1477,7 @@ dev/drm2/drm_memory.c		optional drm2
 dev/drm2/drm_mm.c		optional drm2
 dev/drm2/drm_modes.c		optional drm2
 dev/drm2/drm_pci.c		optional drm2
+dev/drm2/drm_platform.c		optional drm2
 dev/drm2/drm_scatter.c		optional drm2
 dev/drm2/drm_stub.c		optional drm2
 dev/drm2/drm_sysctl.c		optional drm2
diff --git a/sys/dev/drm2/drmP.h b/sys/dev/drm2/drmP.h
index 51f407c..3483cee 100644
--- a/sys/dev/drm2/drmP.h
+++ b/sys/dev/drm2/drmP.h
@@ -1576,6 +1576,10 @@ extern int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *speed_mask);
 
 #define	drm_can_sleep()	(DRM_HZ & 1)
 
+/* Platform section */
+int drm_get_platform_dev(device_t kdev, struct drm_device *dev,
+			 struct drm_driver *driver);
+
 /* FreeBSD specific -- should be moved to drm_os_freebsd.h */
 
 #define	DRM_GEM_MAPPING_MASK	(3ULL << 62)
diff --git a/sys/dev/drm2/drm_fb_helper.c b/sys/dev/drm2/drm_fb_helper.c
index 8c44a24..dd42993 100644
--- a/sys/dev/drm2/drm_fb_helper.c
+++ b/sys/dev/drm2/drm_fb_helper.c
@@ -339,6 +339,7 @@ bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper)
 {
 	bool error = false;
 	int i, ret;
+
 	for (i = 0; i < fb_helper->crtc_count; i++) {
 		struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set;
 		ret = mode_set->crtc->funcs->set_config(mode_set);
@@ -841,6 +842,9 @@ int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
 	struct drm_fb_helper_surface_size sizes;
 	int gamma_size = 0;
 #if defined(__FreeBSD__)
+	struct drm_crtc *crtc;
+	struct drm_device *dev;
+	int ret;
 	device_t kdev;
 #endif
 
@@ -942,6 +946,24 @@ int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
 		if (ret != 0)
 			DRM_ERROR("Failed to attach fbd device: %d\n", ret);
 #endif
+	} else {
+		/* Modified version of drm_fb_helper_set_par() */
+		dev = fb_helper->dev;
+		sx_xlock(&dev->mode_config.mutex);
+		for (i = 0; i < fb_helper->crtc_count; i++) {
+			crtc = fb_helper->crtc_info[i].mode_set.crtc;
+			ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set);
+			if (ret) {
+				sx_xunlock(&dev->mode_config.mutex);
+				return ret;
+			}
+		}
+		sx_xunlock(&dev->mode_config.mutex);
+
+		if (fb_helper->delayed_hotplug) {
+			fb_helper->delayed_hotplug = false;
+			drm_fb_helper_hotplug_event(fb_helper);
+		}
 	}
 #else
 	if (new_fb) {
diff --git a/sys/dev/drm2/drm_platform.c b/sys/dev/drm2/drm_platform.c
new file mode 100644
index 0000000..a8972b4
--- /dev/null
+++ b/sys/dev/drm2/drm_platform.c
@@ -0,0 +1,183 @@
+/*
+ * Derived from drm_pci.c
+ *
+ * Copyright 2003 José Fonseca.
+ * Copyright 2003 Leif Delgass.
+ * Copyright (c) 2009, Code Aurora Forum.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+ * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <dev/drm2/drmP.h>
+
+static void drm_platform_free_irq(struct drm_device *dev)
+{
+	if (dev->irqr == NULL)
+		return;
+
+	bus_release_resource(dev->dev, SYS_RES_IRQ,
+	    dev->irqrid, dev->irqr);
+
+	dev->irqr = NULL;
+	dev->irq = 0;
+}
+
+static const char *drm_platform_get_name(struct drm_device *dev)
+{
+	return dev->driver->name;
+}
+
+static int drm_platform_set_busid(struct drm_device *dev, struct drm_master *master)
+{
+	int len, ret, id;
+
+	master->unique_len = 13 + strlen(dev->driver->name);
+	master->unique_size = master->unique_len;
+	master->unique = malloc(master->unique_len + 1, DRM_MEM_DRIVER, M_NOWAIT);
+
+	if (master->unique == NULL)
+		return -ENOMEM;
+
+	id = 0; // XXX dev->driver->id;
+
+	/* if only a single instance of the platform device, id will be
+	 * set to -1.. use 0 instead to avoid a funny looking bus-id:
+	 */
+	if (id == -1)
+		id = 0;
+
+	len = snprintf(master->unique, master->unique_len,
+			"platform:%s:%02d", dev->driver->name, id);
+
+	if (len > master->unique_len) {
+		DRM_ERROR("Unique buffer overflowed\n");
+		ret = -EINVAL;
+		goto err;
+	}
+
+	return 0;
+err:
+	return ret;
+}
+
+static int drm_platform_get_irq(struct drm_device *dev)
+{
+	if (dev->irqr)
+		return (dev->irq);
+
+	dev->irqr = bus_alloc_resource_any(dev->dev, SYS_RES_IRQ,
+	    &dev->irqrid, RF_SHAREABLE);
+	if (!dev->irqr) {
+		dev_err(dev->dev, "Failed to allocate IRQ\n");
+		return (0);
+	}
+
+	dev->irq = (int) rman_get_start(dev->irqr);
+
+	return (dev->irq);
+}
+
+static struct drm_bus drm_platform_bus = {
+	.bus_type = DRIVER_BUS_PLATFORM,
+	.get_irq = drm_platform_get_irq,
+	.free_irq = drm_platform_free_irq,
+	.get_name = drm_platform_get_name,
+	.set_busid = drm_platform_set_busid,
+};
+
+/**
+ * Register.
+ *
+ * \param platdev - Platform device struture
+ * \return zero on success or a negative number on failure.
+ *
+ * Attempt to gets inter module "drm" information. If we are first
+ * then register the character device and inter module information.
+ * Try and register, if we fail to register, backout previous work.
+ */
+
+int drm_get_platform_dev(device_t kdev, struct drm_device *dev,
+			 struct drm_driver *driver)
+{
+	int ret;
+
+	DRM_DEBUG("\n");
+
+	driver->bus = &drm_platform_bus;
+
+	dev->dev = kdev;
+
+	sx_xlock(&drm_global_mutex);
+
+	ret = drm_fill_in_dev(dev, driver);
+
+	if (ret) {
+		printf("DRM: Fill_in_dev failed.\n");
+		goto err_g1;
+	}
+
+	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+		ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
+		if (ret)
+			goto err_g1;
+	}
+
+	ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY);
+	if (ret)
+		goto err_g2;
+
+	if (dev->driver->load) {
+		ret = dev->driver->load(dev, 0);
+		if (ret)
+			goto err_g3;
+	}
+
+	/* setup the grouping for the legacy output */
+	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+		ret = drm_mode_group_init_legacy_group(dev,
+				&dev->primary->mode_group);
+		if (ret)
+			goto err_g3;
+	}
+
+#ifdef FREEBSD_NOTYET
+	list_add_tail(&dev->driver_item, &driver->device_list);
+#endif /* FREEBSD_NOTYET */
+
+	sx_xunlock(&drm_global_mutex);
+
+	DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
+		 driver->name, driver->major, driver->minor, driver->patchlevel,
+		 driver->date, dev->primary->index);
+
+	return 0;
+
+err_g3:
+	drm_put_minor(&dev->primary);
+err_g2:
+	if (drm_core_check_feature(dev, DRIVER_MODESET))
+		drm_put_minor(&dev->control);
+err_g1:
+	sx_xunlock(&drm_global_mutex);
+	return ret;
+}
+EXPORT_SYMBOL(drm_get_platform_dev);