[PATCH v4 0/7] drm/fbdev: Panel orientation connector property support

[PATCH v4 0/7] drm/fbdev: Panel orientation connector property support

[Hans de Goede]

Hi All,

Here is v4 of my series to add a "panel orientation" property to
the drm-connector for the LCD panel to let userspace know about LCD
panels which are not mounted upright, as well as detecting upside-down
panels without needing quirks (like we do for 90 degree rotated screens).

New in v3:
-As requested by Daniel v3 moves the quirks over from the fbdev
 subsys to the drm subsys. I've done this by simpy starting with a copy of
 the quirk table and eventually removing the fbdev version.

New in v4:
-Fix drm_fb_helper code setting an invalid rotation value on the primary
 plane of disabled/unused crtcs (caught by Fi.CI)

The 1st patch in this series is a small fbdev/fbcon patch, patches 2-5
are all drm patches since patches 2-5 depend on patch 1 I believe it
would be best to merge patches 1-5 through the drm tree.

For merging patches 6-7 I see 3 options:

1) Wait a kernel cycle, things will work fine without them, they are really
just there to remove the fbdev copy of the quirks

2) Merge all 7 patches through the drm tree

3) Use a stable tag in the drm tree which the fbdev tree can merge and then
merge patches 6-7 through the drm tree.

Regards,

Hans

[PATCH v4 1/7] fbcon: Add fbcon_rotate_hint to struct fb_info

[Hans de Goede]

On some hardware the LCD panel is not mounted upright in the casing,
but upside-down or rotated 90 degrees. In this case we want the console
to automatically be rotated to compensate.

The fbdev-driver may know about the need to rotate. Add a new
fbcon_rotate_hint field to struct fb_info, which gets initialized to -1.
If the fbdev-driver knows that some sort of rotation is necessary then
it can set this field to a FB_ROTATE_* value to tell the fbcon console
driver to rotate the console.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/video/fbdev/core/fbcon.c   | 18 ++++++++++++------
 drivers/video/fbdev/core/fbsysfs.c |  1 +
 include/linux/fb.h                 |  5 +++++
 3 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index 04612f938bab..fb317ed76b45 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -963,10 +963,13 @@ static const char *fbcon_startup(void)
 	ops->cur_rotate = -1;
 	ops->cur_blink_jiffies = HZ / 5;
 	info->fbcon_par = ops;
-	if (initial_rotation != -1)
-		p->con_rotate = initial_rotation;
-	else
+
+	p->con_rotate = initial_rotation;
+	if (p->con_rotate = -1)
+		p->con_rotate = info->fbcon_rotate_hint;
+	if (p->con_rotate = -1)
 		p->con_rotate = fbcon_platform_get_rotate(info);
+
 	set_blitting_type(vc, info);
 
 	if (info->fix.type != FB_TYPE_TEXT) {
@@ -1103,10 +1106,13 @@ static void fbcon_init(struct vc_data *vc, int init)
 
 	ops = info->fbcon_par;
 	ops->cur_blink_jiffies = msecs_to_jiffies(vc->vc_cur_blink_ms);
-	if (initial_rotation != -1)
-		p->con_rotate = initial_rotation;
-	else
+
+	p->con_rotate = initial_rotation;
+	if (p->con_rotate = -1)
+		p->con_rotate = info->fbcon_rotate_hint;
+	if (p->con_rotate = -1)
 		p->con_rotate = fbcon_platform_get_rotate(info);
+
 	set_blitting_type(vc, info);
 
 	cols = vc->vc_cols;
diff --git a/drivers/video/fbdev/core/fbsysfs.c b/drivers/video/fbdev/core/fbsysfs.c
index 15755ce1d26c..e31a182b42bf 100644
--- a/drivers/video/fbdev/core/fbsysfs.c
+++ b/drivers/video/fbdev/core/fbsysfs.c
@@ -58,6 +58,7 @@ struct fb_info *framebuffer_alloc(size_t size, struct device *dev)
 		info->par = p + fb_info_size;
 
 	info->device = dev;
+	info->fbcon_rotate_hint = -1;
 
 #ifdef CONFIG_FB_BACKLIGHT
 	mutex_init(&info->bl_curve_mutex);
diff --git a/include/linux/fb.h b/include/linux/fb.h
index f4386b0ccf40..10cf71cc5d13 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -464,6 +464,11 @@ struct fb_info {
 	atomic_t count;
 	int node;
 	int flags;
+	/*
+	 * -1 by default, set to a FB_ROTATE_* value by the driver, if it knows
+	 * a lcd is not mounted upright and fbcon should rotate to compensate.
+	 */
+	int fbcon_rotate_hint;
 	struct mutex lock;		/* Lock for open/release/ioctl funcs */
 	struct mutex mm_lock;		/* Lock for fb_mmap and smem_* fields */
 	struct fb_var_screeninfo var;	/* Current var */
-- 
2.14.2

[PATCH v4 2/7] drm: Add panel orientation quirks

[Hans de Goede]

Some x86 clamshell design devices use portrait tablet screens and a display
engine which cannot rotate in hardware, so the firmware just leaves things
as is and we cannot figure out that the display is oriented non upright
from the hardware.

So at least on x86, we need a quirk table for this. This commit adds a DMI
based quirk table which is initially populated with 5 such devices: Asus
T100HA, GPD Pocket, GPD win, I.T.Works TW891 and the VIOS LTH17.

This quirk table will be used by the drm code to let userspace know that
the display is not mounted upright inside the devices case through a new
panel orientation drm-connector property, as well as to tell fbcon to
rotate the console so that it shows the right way up.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/gpu/drm/Kconfig                        |   3 +
 drivers/gpu/drm/Makefile                       |   1 +
 drivers/gpu/drm/drm_panel_orientation_quirks.c | 157 +++++++++++++++++++++++++
 include/drm/drm_utils.h                        |  18 +++
 4 files changed, 179 insertions(+)
 create mode 100644 drivers/gpu/drm/drm_panel_orientation_quirks.c
 create mode 100644 include/drm/drm_utils.h

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 4d9f21831741..9d005ac98c2b 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -26,6 +26,9 @@ config DRM_MIPI_DSI
 	bool
 	depends on DRM
 
+config DRM_PANEL_ORIENTATION_QUIRKS
+	tristate
+
 config DRM_DP_AUX_CHARDEV
 	bool "DRM DP AUX Interface"
 	depends on DRM
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index a3fdc5a68dff..ffb621819bbf 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -46,6 +46,7 @@ obj-$(CONFIG_DRM_DEBUG_MM_SELFTEST) += selftests/
 
 obj-$(CONFIG_DRM)	+= drm.o
 obj-$(CONFIG_DRM_MIPI_DSI) += drm_mipi_dsi.o
+obj-$(CONFIG_DRM_PANEL_ORIENTATION_QUIRKS) += drm_panel_orientation_quirks.o
 obj-$(CONFIG_DRM_ARM)	+= arm/
 obj-$(CONFIG_DRM_TTM)	+= ttm/
 obj-$(CONFIG_DRM_TDFX)	+= tdfx/
diff --git a/drivers/gpu/drm/drm_panel_orientation_quirks.c b/drivers/gpu/drm/drm_panel_orientation_quirks.c
new file mode 100644
index 000000000000..cea4d71f4978
--- /dev/null
+++ b/drivers/gpu/drm/drm_panel_orientation_quirks.c
@@ -0,0 +1,157 @@
+/*
+ *  drm_panel_orientation_quirks.c -- Quirks for non-normal panel orientation
+ *
+ *	Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com>
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License.  See the file COPYING in the main directory of this archive for
+ *  more details.
+ */
+
+#include <linux/dmi.h>
+#include <drm/drm_connector.h>
+
+#ifdef CONFIG_DMI
+
+/*
+ * Some x86 clamshell design devices use portrait tablet screens and a display
+ * engine which cannot rotate in hardware, so we need to rotate the fbcon to
+ * compensate. Unfortunately these (cheap) devices also typically have quite
+ * generic DMI data, so we match on a combination of DMI data, screen resolution
+ * and a list of known BIOS dates to avoid false positives.
+ */
+
+struct drm_dmi_panel_orientation_data {
+	int width;
+	int height;
+	const char * const *bios_dates;
+	int orientation;
+};
+
+static const struct drm_dmi_panel_orientation_data asus_t100ha = {
+	.width = 800,
+	.height = 1280,
+	.orientation = DRM_MODE_PANEL_ORIENTATION_LEFT_UP,
+};
+
+static const struct drm_dmi_panel_orientation_data gpd_pocket = {
+	.width = 1200,
+	.height = 1920,
+	.bios_dates = (const char * const []){ "05/26/2017", "06/28/2017",
+		"07/05/2017", "08/07/2017", NULL },
+	.orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
+};
+
+static const struct drm_dmi_panel_orientation_data gpd_win = {
+	.width = 720,
+	.height = 1280,
+	.bios_dates = (const char * const []){
+		"10/25/2016", "11/18/2016", "12/23/2016", "12/26/2016",
+		"02/21/2017", "03/20/2017", "05/25/2017", NULL },
+	.orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
+};
+
+static const struct drm_dmi_panel_orientation_data itworks_tw891 = {
+	.width = 800,
+	.height = 1280,
+	.bios_dates = (const char * const []){ "10/16/2015", NULL },
+	.orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
+};
+
+static const struct drm_dmi_panel_orientation_data vios_lth17 = {
+	.width = 800,
+	.height = 1280,
+	.orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,
+};
+
+static const struct dmi_system_id orientation_data[] = {
+	{	/* Asus T100HA */
+		.matches = {
+		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100HAN"),
+		},
+		.driver_data = (void *)&asus_t100ha,
+	}, {	/*
+		 * GPD Pocket, note that the the DMI data is less generic then
+		 * it seems, devices with a board-vendor of "AMI Corporation"
+		 * are quite rare, as are devices which have both board- *and*
+		 * product-id set to "Default String"
+		 */
+		.matches = {
+		  DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+		  DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
+		  DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
+		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
+		},
+		.driver_data = (void *)&gpd_pocket,
+	}, {	/* GPD Win (same note on DMI match as GPD Pocket) */
+		.matches = {
+		  DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+		  DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
+		  DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
+		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
+		},
+		.driver_data = (void *)&gpd_win,
+	}, {	/* I.T.Works TW891 */
+		.matches = {
+		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "To be filled by O.E.M."),
+		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "TW891"),
+		  DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
+		  DMI_EXACT_MATCH(DMI_BOARD_NAME, "TW891"),
+		},
+		.driver_data = (void *)&itworks_tw891,
+	}, {	/* VIOS LTH17 */
+		.matches = {
+		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "VIOS"),
+		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LTH17"),
+		  DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "VIOS"),
+		  DMI_EXACT_MATCH(DMI_BOARD_NAME, "LTH17"),
+		},
+		.driver_data = (void *)&vios_lth17,
+	},
+	{}
+};
+
+int drm_get_panel_orientation_quirk(int width, int height)
+{
+	const struct dmi_system_id *match;
+	const struct drm_dmi_panel_orientation_data *data;
+	const char *bios_date;
+	int i;
+
+	for (match = dmi_first_match(orientation_data);
+	     match;
+	     match = dmi_first_match(match + 1)) {
+		data = match->driver_data;
+
+		if (data->width != width ||
+		    data->height != height)
+			continue;
+
+		if (!data->bios_dates)
+			return data->orientation;
+
+		bios_date = dmi_get_system_info(DMI_BIOS_DATE);
+		if (!bios_date)
+			continue;
+
+		for (i = 0; data->bios_dates[i]; i++) {
+			if (!strcmp(data->bios_dates[i], bios_date))
+				return data->orientation;
+		}
+	}
+
+	return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
+}
+EXPORT_SYMBOL(drm_get_panel_orientation_quirk);
+
+#else
+
+/* There are no quirks for non x86 devices yet */
+int drm_get_panel_orientation_quirk(int width, int height)
+{
+	return DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
+}
+EXPORT_SYMBOL(drm_get_panel_orientation_quirk);
+
+#endif
diff --git a/include/drm/drm_utils.h b/include/drm/drm_utils.h
new file mode 100644
index 000000000000..cea362aeaffe
--- /dev/null
+++ b/include/drm/drm_utils.h
@@ -0,0 +1,18 @@
+/*
+ * Function prototypes for misc. drm utility functions.
+ * Specifically this file is for function prototypes for functions which
+ * may also be used outside of drm code (e.g. in fbdev drivers).
+ *
+ * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __DRM_UTILS_H__
+#define __DRM_UTILS_H__
+
+int drm_get_panel_orientation_quirk(int width, int height);
+
+#endif
-- 
2.14.2

[PATCH v4 3/7] drm: Add support for a panel-orientation connector property

[Hans de Goede]

On some devices the LCD panel is mounted in the casing in such a way that
the up/top side of the panel does not match with the top side of the
device (e.g. it is mounted upside-down).

This commit adds the necessary infra for lcd-panel drm_connector-s to
have a "panel orientation" property to communicate how the panel is
orientated vs the casing.

Userspace can use this property to check for non-normal orientation and
then adjust the displayed image accordingly by rotating it to compensate.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v2:
-Rebased on 4.14-rc1
-Store panel_orientation in drm_display_info, so that drm_fb_helper.c can
 access it easily
-Have a single drm_connector_init_panel_orientation_property rather then
 create and attach functions. The caller is expected to set
 drm_display_info.panel_orientation before calling this, then this will
 check for platform specific quirks overriding the panel_orientation and if
 the panel_orientation is set after this then it will attach the property.
---
 drivers/gpu/drm/Kconfig         |  1 +
 drivers/gpu/drm/drm_connector.c | 73 +++++++++++++++++++++++++++++++++++++++++
 include/drm/drm_connector.h     | 11 +++++++
 include/drm/drm_mode_config.h   |  7 ++++
 include/uapi/drm/drm_mode.h     |  7 ++++
 5 files changed, 99 insertions(+)

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 9d005ac98c2b..0b166e626eb6 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -7,6 +7,7 @@
 menuconfig DRM
 	tristate "Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)"
 	depends on (AGP || AGP=n) && !EMULATED_CMPXCHG && HAS_DMA
+	select DRM_PANEL_ORIENTATION_QUIRKS
 	select HDMI
 	select FB_CMDLINE
 	select I2C
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 704fc8934616..129c83a84320 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -24,6 +24,7 @@
 #include <drm/drm_connector.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_encoder.h>
+#include <drm/drm_utils.h>
 
 #include "drm_crtc_internal.h"
 #include "drm_internal.h"
@@ -212,6 +213,8 @@ int drm_connector_init(struct drm_device *dev,
 	mutex_init(&connector->mutex);
 	connector->edid_blob_ptr = NULL;
 	connector->status = connector_status_unknown;
+	connector->display_info.panel_orientation +		DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
 
 	drm_connector_get_cmdline_mode(connector);
 
@@ -664,6 +667,13 @@ static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
 	{ DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
 };
 
+static const struct drm_prop_enum_list drm_panel_orientation_enum_list[] = {
+	{ DRM_MODE_PANEL_ORIENTATION_NORMAL,	"Normal"	},
+	{ DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP,	"Upside Down"	},
+	{ DRM_MODE_PANEL_ORIENTATION_LEFT_UP,	"Left Side Up"	},
+	{ DRM_MODE_PANEL_ORIENTATION_RIGHT_UP,	"Right Side Up"	},
+};
+
 static const struct drm_prop_enum_list drm_dvi_i_select_enum_list[] = {
 	{ DRM_MODE_SUBCONNECTOR_Automatic, "Automatic" }, /* DVI-I and TV-out */
 	{ DRM_MODE_SUBCONNECTOR_DVID,      "DVI-D"     }, /* DVI-I  */
@@ -768,6 +778,18 @@ DRM_ENUM_NAME_FN(drm_get_tv_subconnector_name,
  *
  * CRTC_ID:
  * 	Mode object ID of the &drm_crtc this connector should be connected to.
+ *
+ * Connectors for LCD panels may also have one standardized property:
+ *
+ * panel orientation:
+ *	On some devices the LCD panel is mounted in the casing in such a way
+ *	that the up/top side of the panel does not match with the top side of
+ *	the device. Userspace can use this property to check for this.
+ *	Note that input coordinates from touchscreens (input devices with
+ *	INPUT_PROP_DIRECT) will still map 1:1 to the actual LCD panel
+ *	coordinates, so if userspace rotates the picture to adjust for
+ *	the orientation it must also apply the same transformation to the
+ *	touchscreen input coordinates.
  */
 
 int drm_connector_create_standard_properties(struct drm_device *dev)
@@ -1234,6 +1256,57 @@ void drm_mode_connector_set_link_status_property(struct drm_connector *connector
 }
 EXPORT_SYMBOL(drm_mode_connector_set_link_status_property);
 
+/**
+ * drm_connector_init_panel_orientation_property -
+ *	initialize the connecters panel_orientation property
+ * @connector: connector for which to init the panel-orientation property.
+ * @width: width in pixels of the panel, used for panel quirk detection
+ * @height: height in pixels of the panel, used for panel quirk detection
+ *
+ * This function should only be called for built-in panels, after setting
+ * connector->display_info.panel_orientation first (if known).
+ *
+ * This function will check for platform specific (e.g. DMI based) quirks
+ * overriding display_info.panel_orientation first, then if panel_orientation
+ * is not DRM_MODE_PANEL_ORIENTATION_UNKNOWN it will attach the
+ * "panel orientation" property to the connector.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_connector_init_panel_orientation_property(
+	struct drm_connector *connector, int width, int height)
+{
+	struct drm_device *dev = connector->dev;
+	struct drm_display_info *info = &connector->display_info;
+	struct drm_property *prop;
+	int orientation_quirk;
+
+	orientation_quirk = drm_get_panel_orientation_quirk(width, height);
+	if (orientation_quirk != DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
+		info->panel_orientation = orientation_quirk;
+
+	if (info->panel_orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN)
+		return 0;
+
+	prop = dev->mode_config.panel_orientation_property;
+	if (!prop) {
+		prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE,
+				"panel orientation",
+				drm_panel_orientation_enum_list,
+				ARRAY_SIZE(drm_panel_orientation_enum_list));
+		if (!prop)
+			return -ENOMEM;
+
+		dev->mode_config.panel_orientation_property = prop;
+	}
+
+	drm_object_attach_property(&connector->base, prop,
+				   info->panel_orientation);
+	return 0;
+}
+EXPORT_SYMBOL(drm_connector_init_panel_orientation_property);
+
 int drm_mode_connector_set_obj_prop(struct drm_mode_object *obj,
 				    struct drm_property *property,
 				    uint64_t value)
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index b4285c40e1e4..e6883065a461 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -222,6 +222,15 @@ struct drm_display_info {
 #define DRM_COLOR_FORMAT_YCRCB422	(1<<2)
 #define DRM_COLOR_FORMAT_YCRCB420	(1<<3)
 
+	/**
+	 * @panel_orientation: Read only connector property for built-in panels,
+	 * indicating the orientation of the panel vs the device's casing.
+	 * drm_connector_init() sets this to DRM_MODE_PANEL_ORIENTATION_UNKNOWN.
+	 * When not UNKNOWN this gets used by the drm_fb_helpers to rotate the
+	 * fb to compensate and gets exported as prop to userspace.
+	 */
+	int panel_orientation;
+
 	/**
 	 * @color_formats: HDMI Color formats, selects between RGB and YCrCb
 	 * modes. Used DRM_COLOR_FORMAT\_ defines, which are _not_ the same ones
@@ -1019,6 +1028,8 @@ int drm_mode_connector_update_edid_property(struct drm_connector *connector,
 					    const struct edid *edid);
 void drm_mode_connector_set_link_status_property(struct drm_connector *connector,
 						 uint64_t link_status);
+int drm_connector_init_panel_orientation_property(
+	struct drm_connector *connector, int width, int height);
 
 /**
  * struct drm_tile_group - Tile group metadata
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
index 0b4ac2ebc610..7d4ee1726e0a 100644
--- a/include/drm/drm_mode_config.h
+++ b/include/drm/drm_mode_config.h
@@ -728,6 +728,13 @@ struct drm_mode_config {
 	 */
 	struct drm_property *suggested_y_property;
 
+	/**
+	 * @panel_orientation_property: Optional connector property indicating
+	 * how the lcd-panel is mounted inside the casing (e.g. normal or
+	 * upside-down).
+	 */
+	struct drm_property *panel_orientation_property;
+
 	/* dumb ioctl parameters */
 	uint32_t preferred_depth, prefer_shadow;
 
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index 34b6bb34b002..f60fae67bc1f 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -127,6 +127,13 @@ extern "C" {
 #define DRM_MODE_LINK_STATUS_GOOD	0
 #define DRM_MODE_LINK_STATUS_BAD	1
 
+/* Panel Orientation options */
+#define DRM_MODE_PANEL_ORIENTATION_UNKNOWN	-1
+#define DRM_MODE_PANEL_ORIENTATION_NORMAL	0
+#define DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP	1
+#define DRM_MODE_PANEL_ORIENTATION_LEFT_UP	2
+#define DRM_MODE_PANEL_ORIENTATION_RIGHT_UP	3
+
 /*
  * DRM_MODE_ROTATE_<degrees>
  *
-- 
2.14.2

[PATCH v4 4/7] drm/fb-helper: Apply panel orientation connector prop to the primary plane

[Hans de Goede]

Apply the "panel orientation" drm connector prop to the primary plane so
that fbcon and fbdev using userspace programs display the right way up.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id”894
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v2:
-New patch in v2 of this patch-set

Changes in v3:
-Use a rotation member in struct drm_fb_helper_crtc and set that from
 drm_setup_crtcs instead of looping over all crtc's to find the right one
 later
-Since we now no longer look at rotation quirks directly in the fbcon
 code, set fb_info.fbcon_rotate_hint when the panel is not mounted upright
 and we cannot use hardware rotation

Changes in v4:
-Make drm_fb_helper_init() init drm_fb_helper_crtc.rotation to
 DRM_MODE_ROTATE_0 for all crtcs, so that we do not end up setting the
 plane_state's rotation to an invalid value for disabled crtcs
 (caught by Fi.CI)
---
 drivers/gpu/drm/drm_fb_helper.c | 77 +++++++++++++++++++++++++++++++++++++++--
 include/drm/drm_fb_helper.h     |  8 +++++
 2 files changed, 83 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 116d1f1337c7..b5d075fbd3a5 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -41,6 +41,7 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 
+#include "drm_crtc_internal.h"
 #include "drm_crtc_helper_internal.h"
 
 static bool drm_fbdev_emulation = true;
@@ -350,6 +351,7 @@ EXPORT_SYMBOL(drm_fb_helper_debug_leave);
 static int restore_fbdev_mode_atomic(struct drm_fb_helper *fb_helper, bool active)
 {
 	struct drm_device *dev = fb_helper->dev;
+	struct drm_plane_state *plane_state;
 	struct drm_plane *plane;
 	struct drm_atomic_state *state;
 	int i, ret;
@@ -368,8 +370,6 @@ static int restore_fbdev_mode_atomic(struct drm_fb_helper *fb_helper, bool activ
 retry:
 	plane_mask = 0;
 	drm_for_each_plane(plane, dev) {
-		struct drm_plane_state *plane_state;
-
 		plane_state = drm_atomic_get_plane_state(state, plane);
 		if (IS_ERR(plane_state)) {
 			ret = PTR_ERR(plane_state);
@@ -392,6 +392,11 @@ static int restore_fbdev_mode_atomic(struct drm_fb_helper *fb_helper, bool activ
 
 	for (i = 0; i < fb_helper->crtc_count; i++) {
 		struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set;
+		struct drm_plane *primary = mode_set->crtc->primary;
+
+		/* Cannot fail as we've already gotten the plane state above */
+		plane_state = drm_atomic_get_new_plane_state(state, primary);
+		plane_state->rotation = fb_helper->crtc_info[i].rotation;
 
 		ret = __drm_atomic_helper_set_config(mode_set, state);
 		if (ret != 0)
@@ -821,6 +826,7 @@ int drm_fb_helper_init(struct drm_device *dev,
 		if (!fb_helper->crtc_info[i].mode_set.connectors)
 			goto out_free;
 		fb_helper->crtc_info[i].mode_set.num_connectors = 0;
+		fb_helper->crtc_info[i].rotation = DRM_MODE_ROTATE_0;
 	}
 
 	i = 0;
@@ -2334,6 +2340,57 @@ static int drm_pick_crtcs(struct drm_fb_helper *fb_helper,
 	return best_score;
 }
 
+/*
+ * This function checks if rotation is necessary because of panel orientation
+ * and if it is, if it is supported.
+ * If rotation is necessary and supported, its gets set in fb_crtc.rotation.
+ * If rotation is necessary but not supported, a DRM_MODE_ROTATE_* flag gets
+ * or-ed into fb_helper->rotations. In drm_setup_crtcs_fb() we check if only
+ * one bit is set and then we set fb_info.fbcon_rotate_hint to make fbcon do
+ * the unsupported rotation.
+ */
+static void drm_setup_crtc_rotation(struct drm_fb_helper *fb_helper,
+				    struct drm_fb_helper_crtc *fb_crtc,
+				    struct drm_connector *connector)
+{
+	struct drm_plane *plane = fb_crtc->mode_set.crtc->primary;
+	uint64_t valid_mask = 0;
+	int i, rotation;
+
+	fb_crtc->rotation = DRM_MODE_ROTATE_0;
+
+	switch (connector->display_info.panel_orientation) {
+	case DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP:
+		rotation = DRM_MODE_ROTATE_180;
+		break;
+	case DRM_MODE_PANEL_ORIENTATION_LEFT_UP:
+		rotation = DRM_MODE_ROTATE_90;
+		break;
+	case DRM_MODE_PANEL_ORIENTATION_RIGHT_UP:
+		rotation = DRM_MODE_ROTATE_270;
+		break;
+	default:
+		rotation = DRM_MODE_ROTATE_0;
+	}
+
+	if (rotation = DRM_MODE_ROTATE_0 || !plane->rotation_property) {
+		fb_helper->rotations |= rotation;
+		return;
+	}
+
+	for (i = 0; i < plane->rotation_property->num_values; i++)
+		valid_mask |= (1ULL << plane->rotation_property->values[i]);
+
+	if (!(rotation & valid_mask)) {
+		fb_helper->rotations |= rotation;
+		return;
+	}
+
+	fb_crtc->rotation = rotation;
+	/* Rotating in hardware, fbcon should not rotate */
+	fb_helper->rotations |= DRM_MODE_ROTATE_0;
+}
+
 static void drm_setup_crtcs(struct drm_fb_helper *fb_helper,
 			    u32 width, u32 height)
 {
@@ -2393,6 +2450,7 @@ static void drm_setup_crtcs(struct drm_fb_helper *fb_helper,
 		drm_fb_helper_modeset_release(fb_helper,
 					      &fb_helper->crtc_info[i].mode_set);
 
+	fb_helper->rotations = 0;
 	drm_fb_helper_for_each_connector(fb_helper, i) {
 		struct drm_display_mode *mode = modes[i];
 		struct drm_fb_helper_crtc *fb_crtc = crtcs[i];
@@ -2412,6 +2470,7 @@ static void drm_setup_crtcs(struct drm_fb_helper *fb_helper,
 			modeset->mode = drm_mode_duplicate(dev,
 							   fb_crtc->desired_mode);
 			drm_connector_get(connector);
+			drm_setup_crtc_rotation(fb_helper, fb_crtc, connector);
 			modeset->connectors[modeset->num_connectors++] = connector;
 			modeset->x = offset->x;
 			modeset->y = offset->y;
@@ -2453,6 +2512,20 @@ static void drm_setup_crtcs_fb(struct drm_fb_helper *fb_helper)
 		}
 	}
 	mutex_unlock(&fb_helper->dev->mode_config.mutex);
+
+	switch (fb_helper->rotations) {
+	case DRM_MODE_ROTATE_90:
+		info->fbcon_rotate_hint = FB_ROTATE_CCW;
+		break;
+	case DRM_MODE_ROTATE_180:
+		info->fbcon_rotate_hint = FB_ROTATE_UD;
+		break;
+	case DRM_MODE_ROTATE_270:
+		info->fbcon_rotate_hint = FB_ROTATE_CW;
+		break;
+	default:
+		info->fbcon_rotate_hint = FB_ROTATE_UR;
+	}
 }
 
 /* Note: Drops fb_helper->lock before returning. */
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index 33fe95927742..4ee834a077a2 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -48,6 +48,7 @@ struct drm_fb_helper_crtc {
 	struct drm_mode_set mode_set;
 	struct drm_display_mode *desired_mode;
 	int x, y;
+	int rotation;
 };
 
 /**
@@ -158,6 +159,13 @@ struct drm_fb_helper {
 	struct drm_fb_helper_crtc *crtc_info;
 	int connector_count;
 	int connector_info_alloc_count;
+	/**
+	 * @rotations:
+	 * Bitmask of all rotations requested for panel-orientation which
+	 * could not be handled in hardware. If only one bit is set
+	 * fbdev->fbcon_rotate_hint gets set to the requested rotation.
+	 */
+	int rotations;
 	/**
 	 * @connector_info:
 	 *
-- 
2.14.2

[PATCH v4 5/7] drm/i915: Add "panel orientation" property to the panel connector

[Hans de Goede]

Ideally we could use the VBT for this, that would be simple, in
intel_dsi_init() check dev_priv->vbt.dsi.config->rotation, set
connector->display_info.panel_orientation accordingly and call
drm_connector_init_panel_orientation_property(), done.

Unfortunately vbt.dsi.config->rotation is always 0 even on tablets
with an upside down LCD and where the GOP is properly rotating the
EFI fb in hardware.

So instead we end up reading the rotation from the primary plane.
To read the info from the primary plane, we need to know which crtc
the panel is hooked up to, so we do this the first time the panel
encoder's get_config function get called, as by then the encoder
crtc routing has been set up.

This commit only implements the panel orientation property for DSI
panels on BYT / CHT / BXT hardware, as all known non normal oriented
panels are only found on this hardware.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v2:
-Read back the rotation applied by the GOP from the primary plane
 instead of relying on dev_priv->vbt.dsi.config->rotation, because it
 seems that the VBT rotation filed is always 0 even on devices where the
 GOP does apply a rotation

Changes in v3:
-Rewrite the code to read back the orientation from the primary
 plane to contain all of this in intel_dsi.c instead of poking a bunch
 of holes between all the different layers
---
 drivers/gpu/drm/i915/intel_drv.h   |  1 +
 drivers/gpu/drm/i915/intel_dsi.c   | 48 ++++++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_dsi.h   |  2 ++
 drivers/gpu/drm/i915/intel_panel.c | 16 +++++++++++++
 4 files changed, 67 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 47d022d48718..11efc6cb74c8 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1727,6 +1727,7 @@ void intel_panel_enable_backlight(const struct intel_crtc_state *crtc_state,
 				  const struct drm_connector_state *conn_state);
 void intel_panel_disable_backlight(const struct drm_connector_state *old_conn_state);
 void intel_panel_destroy_backlight(struct drm_connector *connector);
+void intel_panel_set_orientation(struct intel_panel *panel, int orientation);
 enum drm_connector_status intel_panel_detect(struct drm_i915_private *dev_priv);
 extern struct drm_display_mode *intel_find_panel_downclock(
 				struct drm_i915_private *dev_priv,
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 83f15848098a..3e2f12db8d15 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -1084,13 +1084,16 @@ static void bxt_dsi_get_pipe_config(struct intel_encoder *encoder,
 	struct drm_display_mode *adjusted_mode_sw;
 	struct intel_crtc *intel_crtc;
 	struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+	struct intel_panel *panel = &intel_dsi->attached_connector->panel;
 	unsigned int lane_count = intel_dsi->lane_count;
 	unsigned int bpp, fmt;
+	int orientation;
 	enum port port;
 	u16 hactive, hfp, hsync, hbp, vfp, vsync, vbp;
 	u16 hfp_sw, hsync_sw, hbp_sw;
 	u16 crtc_htotal_sw, crtc_hsync_start_sw, crtc_hsync_end_sw,
 				crtc_hblank_start_sw, crtc_hblank_end_sw;
+	u32 val;
 
 	/* FIXME: hw readout should not depend on SW state */
 	intel_crtc = to_intel_crtc(encoder->base.crtc);
@@ -1234,6 +1237,49 @@ static void bxt_dsi_get_pipe_config(struct intel_encoder *encoder,
 	if (adjusted_mode->crtc_hblank_end = crtc_hblank_end_sw)
 		adjusted_mode->crtc_hblank_end  					adjusted_mode_sw->crtc_hblank_end;
+
+	if (!intel_dsi->got_panel_orientation) {
+		val = I915_READ(PLANE_CTL(intel_crtc->pipe, 0));
+		/* The rotation is used to correct for the panel orientation */
+		switch (val & PLANE_CTL_ROTATE_MASK) {
+		case PLANE_CTL_ROTATE_0:
+			orientation = DRM_MODE_PANEL_ORIENTATION_NORMAL;
+			break;
+		case PLANE_CTL_ROTATE_90:
+			orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP;
+			break;
+		case PLANE_CTL_ROTATE_180:
+			orientation = DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP;
+			break;
+		case PLANE_CTL_ROTATE_270:
+			orientation = DRM_MODE_PANEL_ORIENTATION_LEFT_UP;
+			break;
+		}
+		intel_panel_set_orientation(panel, orientation);
+		intel_dsi->got_panel_orientation = true;
+	}
+}
+
+static void vlv_dsi_get_pipe_config(struct intel_encoder *encoder)
+{
+	struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
+	struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
+	struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+	struct intel_panel *panel = &intel_dsi->attached_connector->panel;
+	int orientation;
+	u32 val;
+
+	if (!intel_dsi->got_panel_orientation) {
+		val = I915_READ(DSPCNTR(intel_crtc->plane));
+
+		if (val & DISPPLANE_ROTATE_180)
+			orientation = DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP;
+		else
+			orientation = DRM_MODE_PANEL_ORIENTATION_NORMAL;
+
+		intel_panel_set_orientation(panel, orientation);
+		intel_dsi->got_panel_orientation = true;
+	}
 }
 
 static void intel_dsi_get_config(struct intel_encoder *encoder,
@@ -1245,6 +1291,8 @@ static void intel_dsi_get_config(struct intel_encoder *encoder,
 
 	if (IS_GEN9_LP(dev_priv))
 		bxt_dsi_get_pipe_config(encoder, pipe_config);
+	else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
+		vlv_dsi_get_pipe_config(encoder);
 
 	pclk = intel_dsi_get_pclk(encoder, pipe_config->pipe_bpp,
 				  pipe_config);
diff --git a/drivers/gpu/drm/i915/intel_dsi.h b/drivers/gpu/drm/i915/intel_dsi.h
index 7afeb9580f41..92c2fe31f3fd 100644
--- a/drivers/gpu/drm/i915/intel_dsi.h
+++ b/drivers/gpu/drm/i915/intel_dsi.h
@@ -52,6 +52,8 @@ struct intel_dsi {
 	/* if true, use HS mode, otherwise LP */
 	bool hs;
 
+	bool got_panel_orientation;
+
 	/* virtual channel */
 	int channel;
 
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index 37e6211c1f25..536e40a892cb 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -1845,6 +1845,22 @@ void intel_panel_destroy_backlight(struct drm_connector *connector)
 	panel->backlight.present = false;
 }
 
+void intel_panel_set_orientation(struct intel_panel *panel, int orientation)
+{
+	struct intel_connector *panel_conn;
+	int width = 0, height = 0;
+
+	if (panel->fixed_mode) {
+		width = panel->fixed_mode->hdisplay;
+		height = panel->fixed_mode->vdisplay;
+	}
+
+	panel_conn = container_of(panel, struct intel_connector, panel);
+	panel_conn->base.display_info.panel_orientation = orientation;
+	drm_connector_init_panel_orientation_property(&panel_conn->base,
+						      width, height);
+}
+
 /* Set up chip specific backlight functions */
 static void
 intel_panel_init_backlight_funcs(struct intel_panel *panel)
-- 
2.14.2

[PATCH v4 6/7] efifb: Set info->fbcon_rotate_hint based on drm_get_panel_orientation_quirk

[Hans de Goede]

On some hardware the LCD panel is not mounted upright in the casing,
but rotated by 90 degrees. In this case we want the console to
automatically be rotated to compensate.

The drm subsys has a quirk table for this, use the
drm_get_panel_orientation_quirk function to get the panel orientation
and set info->fbcon_rotate_hint based on this, so that the fbcon console
on top of efifb gets automatically rotated to compensate for the panel
orientation.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/video/fbdev/Kconfig |  1 +
 drivers/video/fbdev/efifb.c | 21 ++++++++++++++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 5e58f5ec0a28..c4a90c497839 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -772,6 +772,7 @@ config FB_VESA
 config FB_EFI
 	bool "EFI-based Framebuffer Support"
 	depends on (FB = y) && !IA64 && EFI
+	select DRM_PANEL_ORIENTATION_QUIRKS
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index 3a010641f630..8c7f6aeee205 100644
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -15,6 +15,8 @@
 #include <linux/screen_info.h>
 #include <video/vga.h>
 #include <asm/efi.h>
+#include <drm/drm_utils.h> /* For drm_get_panel_orientation_quirk */
+#include <drm/drm_mode.h>  /* For DRM_MODE_PANEL_ORIENTATION_* */
 
 static bool request_mem_succeeded = false;
 static bool nowc = false;
@@ -156,7 +158,7 @@ static u64 bar_offset;
 static int efifb_probe(struct platform_device *dev)
 {
 	struct fb_info *info;
-	int err;
+	int err, orientation;
 	unsigned int size_vmode;
 	unsigned int size_remap;
 	unsigned int size_total;
@@ -328,6 +330,23 @@ static int efifb_probe(struct platform_device *dev)
 	info->fix = efifb_fix;
 	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_MISC_FIRMWARE;
 
+	orientation = drm_get_panel_orientation_quirk(efifb_defined.xres,
+						      efifb_defined.yres);
+	switch (orientation) {
+	default:
+		info->fbcon_rotate_hint = FB_ROTATE_UR;
+		break;
+	case DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP:
+		info->fbcon_rotate_hint = FB_ROTATE_UD;
+		break;
+	case DRM_MODE_PANEL_ORIENTATION_LEFT_UP:
+		info->fbcon_rotate_hint = FB_ROTATE_CCW;
+		break;
+	case DRM_MODE_PANEL_ORIENTATION_RIGHT_UP:
+		info->fbcon_rotate_hint = FB_ROTATE_CW;
+		break;
+	}
+
 	err = sysfs_create_groups(&dev->dev.kobj, efifb_groups);
 	if (err) {
 		pr_err("efifb: cannot add sysfs attrs\n");
-- 
2.14.2

[PATCH v4 7/7] fbcon: Remove dmi quirk table

[Hans de Goede]

This is now all handled in the drivers and communicated through
fb_info.fbcon_rotate_hint.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/video/fbdev/core/Makefile           |   3 -
 drivers/video/fbdev/core/fbcon.c            |   4 +-
 drivers/video/fbdev/core/fbcon.h            |   6 --
 drivers/video/fbdev/core/fbcon_dmi_quirks.c | 145 ----------------------------
 4 files changed, 2 insertions(+), 156 deletions(-)
 delete mode 100644 drivers/video/fbdev/core/fbcon_dmi_quirks.c

diff --git a/drivers/video/fbdev/core/Makefile b/drivers/video/fbdev/core/Makefile
index 73493bbd7a15..0214b863ac3f 100644
--- a/drivers/video/fbdev/core/Makefile
+++ b/drivers/video/fbdev/core/Makefile
@@ -14,9 +14,6 @@ ifeq ($(CONFIG_FRAMEBUFFER_CONSOLE_ROTATION),y)
 fb-y				  += fbcon_rotate.o fbcon_cw.o fbcon_ud.o \
 				     fbcon_ccw.o
 endif
-ifeq ($(CONFIG_DMI),y)
-fb-y				  += fbcon_dmi_quirks.o
-endif
 endif
 fb-objs                           := $(fb-y)
 
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index fb317ed76b45..157a40670a47 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -968,7 +968,7 @@ static const char *fbcon_startup(void)
 	if (p->con_rotate = -1)
 		p->con_rotate = info->fbcon_rotate_hint;
 	if (p->con_rotate = -1)
-		p->con_rotate = fbcon_platform_get_rotate(info);
+		p->con_rotate = FB_ROTATE_UR;
 
 	set_blitting_type(vc, info);
 
@@ -1111,7 +1111,7 @@ static void fbcon_init(struct vc_data *vc, int init)
 	if (p->con_rotate = -1)
 		p->con_rotate = info->fbcon_rotate_hint;
 	if (p->con_rotate = -1)
-		p->con_rotate = fbcon_platform_get_rotate(info);
+		p->con_rotate = FB_ROTATE_UR;
 
 	set_blitting_type(vc, info);
 
diff --git a/drivers/video/fbdev/core/fbcon.h b/drivers/video/fbdev/core/fbcon.h
index 18f3ac144237..3746828356ed 100644
--- a/drivers/video/fbdev/core/fbcon.h
+++ b/drivers/video/fbdev/core/fbcon.h
@@ -261,10 +261,4 @@ extern void fbcon_set_rotate(struct fbcon_ops *ops);
 #define fbcon_set_rotate(x) do {} while(0)
 #endif /* CONFIG_FRAMEBUFFER_CONSOLE_ROTATION */
 
-#ifdef CONFIG_DMI
-int fbcon_platform_get_rotate(struct fb_info *info);
-#else
-#define fbcon_platform_get_rotate(i) FB_ROTATE_UR
-#endif /* CONFIG_DMI */
-
 #endif /* _VIDEO_FBCON_H */
diff --git a/drivers/video/fbdev/core/fbcon_dmi_quirks.c b/drivers/video/fbdev/core/fbcon_dmi_quirks.c
deleted file mode 100644
index 6904e47d1e51..000000000000
--- a/drivers/video/fbdev/core/fbcon_dmi_quirks.c
+++ /dev/null
@@ -1,145 +0,0 @@
-/*
- *  fbcon_dmi_quirks.c -- DMI based quirk detection for fbcon
- *
- *	Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com>
- *
- *  This file is subject to the terms and conditions of the GNU General Public
- *  License.  See the file COPYING in the main directory of this archive for
- *  more details.
- */
-
-#include <linux/dmi.h>
-#include <linux/fb.h>
-#include <linux/kernel.h>
-#include "fbcon.h"
-
-/*
- * Some x86 clamshell design devices use portrait tablet screens and a display
- * engine which cannot rotate in hardware, so we need to rotate the fbcon to
- * compensate. Unfortunately these (cheap) devices also typically have quite
- * generic DMI data, so we match on a combination of DMI data, screen resolution
- * and a list of known BIOS dates to avoid false positives.
- */
-
-struct fbcon_dmi_rotate_data {
-	int width;
-	int height;
-	const char * const *bios_dates;
-	int rotate;
-};
-
-static const struct fbcon_dmi_rotate_data rotate_data_asus_t100ha = {
-	.width = 800,
-	.height = 1280,
-	.rotate = FB_ROTATE_CCW,
-};
-
-static const struct fbcon_dmi_rotate_data rotate_data_gpd_pocket = {
-	.width = 1200,
-	.height = 1920,
-	.bios_dates = (const char * const []){ "05/26/2017", "06/28/2017",
-		"07/05/2017", "08/07/2017", NULL },
-	.rotate = FB_ROTATE_CW,
-};
-
-static const struct fbcon_dmi_rotate_data rotate_data_gpd_win = {
-	.width = 720,
-	.height = 1280,
-	.bios_dates = (const char * const []){
-		"10/25/2016", "11/18/2016", "12/23/2016", "12/26/2016",
-		"02/21/2017", "03/20/2017", "05/25/2017", NULL },
-	.rotate = FB_ROTATE_CW,
-};
-
-static const struct fbcon_dmi_rotate_data rotate_data_itworks_tw891 = {
-	.width = 800,
-	.height = 1280,
-	.bios_dates = (const char * const []){ "10/16/2015", NULL },
-	.rotate = FB_ROTATE_CW,
-};
-
-static const struct fbcon_dmi_rotate_data rotate_data_vios_lth17 = {
-	.width = 800,
-	.height = 1280,
-	.rotate = FB_ROTATE_CW,
-};
-
-static const struct dmi_system_id rotate_data[] = {
-	{	/* Asus T100HA */
-		.matches = {
-		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
-		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100HAN"),
-		},
-		.driver_data = (void *)&rotate_data_asus_t100ha,
-	}, {	/*
-		 * GPD Pocket, note that the the DMI data is less generic then
-		 * it seems, devices with a board-vendor of "AMI Corporation"
-		 * are quite rare, as are devices which have both board- *and*
-		 * product-id set to "Default String"
-		 */
-		.matches = {
-		  DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
-		  DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
-		  DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
-		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
-		},
-		.driver_data = (void *)&rotate_data_gpd_pocket,
-	}, {	/* GPD Win (same note on DMI match as GPD Pocket) */
-		.matches = {
-		  DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
-		  DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
-		  DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
-		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
-		},
-		.driver_data = (void *)&rotate_data_gpd_win,
-	}, {	/* I.T.Works TW891 */
-		.matches = {
-		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "To be filled by O.E.M."),
-		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "TW891"),
-		  DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "To be filled by O.E.M."),
-		  DMI_EXACT_MATCH(DMI_BOARD_NAME, "TW891"),
-		},
-		.driver_data = (void *)&rotate_data_itworks_tw891,
-	}, {	/* VIOS LTH17 */
-		.matches = {
-		  DMI_EXACT_MATCH(DMI_SYS_VENDOR, "VIOS"),
-		  DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "LTH17"),
-		  DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "VIOS"),
-		  DMI_EXACT_MATCH(DMI_BOARD_NAME, "LTH17"),
-		},
-		.driver_data = (void *)&rotate_data_vios_lth17,
-	},
-	{}
-};
-
-int fbcon_platform_get_rotate(struct fb_info *info)
-{
-	const struct dmi_system_id *match;
-	const struct fbcon_dmi_rotate_data *data;
-	const char *bios_date;
-	int i;
-
-	for (match = dmi_first_match(rotate_data);
-	     match;
-	     match = dmi_first_match(match + 1)) {
-		data = match->driver_data;
-
-		if (data->width != info->var.xres ||
-		    data->height != info->var.yres)
-			continue;
-
-		if (!data->bios_dates)
-			return data->rotate;
-
-		bios_date = dmi_get_system_info(DMI_BIOS_DATE);
-		if (!bios_date)
-			continue;
-
-		for (i = 0; data->bios_dates[i]; i++) {
-			if (!strcmp(data->bios_dates[i], bios_date))
-				return data->rotate;
-		}
-	}
-
-	return FB_ROTATE_UR;
-}
-- 
2.14.2