drm/vivante: porting vivante drm driver from 4.14 kernel

This uses drm_vm legacy. So move the Kconfig under DRM_LEGACY.
With this, under X11, the GPU can be accessed again.

This is a cherry-pick and adoption of commit 2fdacc9ed881
("MGS-1133 porting vivante drm driver to 4.14 kernel.")

Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>

5 files changed, 243 insertions, 0 deletions

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index e67c194c2aca..5b16f690edb9 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -429,6 +429,13 @@ config DRM_VIA
 	  Choose this option if you have a Via unichrome or compatible video
 	  chipset. If M is selected the module will be called via.
 
+config DRM_VIVANTE
+	tristate "Vivante GCCore"
+	depends on DRM
+	help
+	  Choose this option if you have a Vivante graphics card.
+	  If M is selected, the module will be called vivante.
+
 config DRM_SAVAGE
 	tristate "Savage video cards"
 	depends on DRM && PCI
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index a6191f8d58fa..3c68f762bb69 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -60,6 +60,7 @@ obj-$(CONFIG_DRM_MIPI_DSI) += drm_mipi_dsi.o
 obj-$(CONFIG_DRM_PANEL_ORIENTATION_QUIRKS) += drm_panel_orientation_quirks.o
 obj-y			+= arm/
 obj-$(CONFIG_DRM_TTM)	+= ttm/
+obj-$(CONFIG_DRM_VIVANTE) += vivante/
 obj-$(CONFIG_DRM_SCHED)	+= scheduler/
 obj-$(CONFIG_DRM_TDFX)	+= tdfx/
 obj-$(CONFIG_DRM_R128)	+= r128/
diff --git a/drivers/gpu/drm/vivante/Makefile b/drivers/gpu/drm/vivante/Makefile
new file mode 100644
index 000000000000..d87c8e8752a6
--- /dev/null
+++ b/drivers/gpu/drm/vivante/Makefile
@@ -0,0 +1,29 @@
+##############################################################################
+#
+#    Copyright (C) 2005 - 2013 by Vivante Corp.
+#
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 2 of the license, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program; if not write to the Free Software
+#    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+#
+##############################################################################
+
+
+#
+# Makefile for the drm device driver.  This driver provides support for the
+# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher.
+
+ccflags-y := -Iinclude/drm
+vivante-y := vivante_drv.o
+
+obj-$(CONFIG_DRM_VIVANTE)	+= vivante.o
diff --git a/drivers/gpu/drm/vivante/vivante_drv.c b/drivers/gpu/drm/vivante/vivante_drv.c
new file mode 100644
index 000000000000..73a8c421e20c
--- /dev/null
+++ b/drivers/gpu/drm/vivante/vivante_drv.c
@@ -0,0 +1,140 @@
+/****************************************************************************
+*
+*    Copyright (C) 2005 - 2013 by Vivante Corp.
+*
+*    This program is free software; you can redistribute it and/or modify
+*    it under the terms of the GNU General Public License as published by
+*    the Free Software Foundation; either version 2 of the license, or
+*    (at your option) any later version.
+*
+*    This program is distributed in the hope that it will be useful,
+*    but WITHOUT ANY WARRANTY; without even the implied warranty of
+*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+*    GNU General Public License for more details.
+*
+*    You should have received a copy of the GNU General Public License
+*    along with this program; if not write to the Free Software
+*    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*
+*****************************************************************************/
+
+
+/* vivante_drv.c -- vivante driver -*- linux-c -*-
+ *
+ *
+ * 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
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Rickard E. (Rik) Faith <faith@valinux.com>
+ *    Daryll Strauss <daryll@valinux.com>
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+#include <linux/component.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <drm/drmP.h>
+#include <drm/drm_pciids.h>
+#include <drm/drm_legacy.h>
+
+#include "vivante_drv.h"
+
+static char platformdevicename[] = "platform:Vivante GCCore";
+static struct platform_device *pplatformdev;
+
+static const struct file_operations viv_driver_fops = {
+	.owner = THIS_MODULE,
+	.open = drm_open,
+	.release = drm_release,
+	.unlocked_ioctl = drm_ioctl,
+	.mmap = drm_legacy_mmap,
+	.poll = drm_poll,
+	.llseek = noop_llseek,
+};
+
+static struct drm_driver driver = {
+	.fops = &viv_driver_fops,
+	.name = DRIVER_NAME,
+	.desc = DRIVER_DESC,
+	.date = DRIVER_DATE,
+	.major = DRIVER_MAJOR,
+	.minor = DRIVER_MINOR,
+	.patchlevel = DRIVER_PATCHLEVEL,
+	.driver_features = DRIVER_LEGACY,
+};
+
+static int drm_get_platform_dev(struct platform_device *platdev,
+				struct drm_driver *driver)
+{
+	struct drm_device *dev;
+	int ret;
+
+	DRM_DEBUG("\n");
+
+	dev = drm_dev_alloc(driver, &platdev->dev);
+	if (IS_ERR(dev))
+		return PTR_ERR(dev);
+
+	dev_set_drvdata(&platdev->dev, dev);
+
+	ret = drm_dev_register(dev, 0);
+	if (ret)
+		goto err_free;
+
+	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_free:
+	drm_dev_put(dev);
+	return ret;
+}
+
+static int __init vivante_init(void)
+{
+	int retcode;
+
+	pplatformdev = platform_device_register_simple(platformdevicename,
+			-1, NULL, 0);
+	if (pplatformdev == NULL)
+		printk(KERN_ERR"Platform device is null\n");
+
+	retcode = drm_get_platform_dev(pplatformdev, &driver);
+
+	return retcode;
+}
+module_init(vivante_init);
+
+static void __exit vivante_exit(void)
+{
+	if (pplatformdev) {
+		/* The drvdata is set in drm_get_platform_dev() */
+		drm_put_dev(platform_get_drvdata(pplatformdev));
+		platform_device_unregister(pplatformdev);
+		pplatformdev = NULL;
+	}
+}
+module_exit(vivante_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL and additional rights");
+MODULE_ALIAS("platform:Vivante GCCore");
diff --git a/drivers/gpu/drm/vivante/vivante_drv.h b/drivers/gpu/drm/vivante/vivante_drv.h
new file mode 100644
index 000000000000..03f5884ce19b
--- /dev/null
+++ b/drivers/gpu/drm/vivante/vivante_drv.h
@@ -0,0 +1,66 @@
+/****************************************************************************
+*
+*    Copyright (C) 2005 - 2013 by Vivante Corp.
+*
+*    This program is free software; you can redistribute it and/or modify
+*    it under the terms of the GNU General Public License as published by
+*    the Free Software Foundation; either version 2 of the license, or
+*    (at your option) any later version.
+*
+*    This program is distributed in the hope that it will be useful,
+*    but WITHOUT ANY WARRANTY; without even the implied warranty of
+*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+*    GNU General Public License for more details.
+*
+*    You should have received a copy of the GNU General Public License
+*    along with this program; if not write to the Free Software
+*    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*
+*****************************************************************************/
+
+
+/* vivante_drv.h -- Vivante DRM template customization -*- linux-c -*-
+ * Created: Wed Feb 14 12:32:32 2012 by John Zhao
+ */
+/*
+ *
+ * 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
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+#ifndef __VIVANTE_DRV_H__
+#define __VIVANTE_DRV_H__
+
+/* General customization:
+ */
+
+#define DRIVER_AUTHOR		"Vivante Inc."
+
+#define DRIVER_NAME		"vivante"
+#define DRIVER_DESC		"Vivante GCCore"
+#define DRIVER_DATE		"20120216"
+
+#define DRIVER_MAJOR		1
+#define DRIVER_MINOR		0
+#define DRIVER_PATCHLEVEL	0
+
+#endif