From b4a2c0055a4fb7bf34d0490284c966bea17f7117 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Mon, 18 Feb 2019 21:27:04 -0300 Subject: dt-bindings: Add vendor prefix for VXT Ltd VXT Ltd is a manufacturer of projected capacitive touch panel and display solutions: http://www.vxt.com.tw/ Reviewed-by: Otavio Salvador Reviewed-by: Rob Herring Signed-off-by: Fabio Estevam Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20190219002706.20077-1-festevam@gmail.com --- Documentation/devicetree/bindings/vendor-prefixes.txt | 1 + 1 file changed, 1 insertion(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 9506140167d6..433e03fbe078 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -442,6 +442,7 @@ vivante Vivante Corporation vocore VoCore Studio voipac Voipac Technologies s.r.o. vot Vision Optical Technology Co., Ltd. +vxt VXT Ltd wd Western Digital Corp. wetek WeTek Electronics, limited. wexler Wexler -- cgit v1.3-14-g43fede From 68c2edaca65165114e04daeb5f0af0e3e447c4a9 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Mon, 18 Feb 2019 21:27:05 -0300 Subject: dt-bindings: Add VXT VL050-8048NT-C01 panel bindings The VXT VL050-8048NT-C01 is a TFT LCD panel with a 800x480 resolution connected via 24 width parallel interface. Reviewed-by: Otavio Salvador Reviewed-by: Rob Herring Signed-off-by: Fabio Estevam Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20190219002706.20077-2-festevam@gmail.com --- .../devicetree/bindings/display/panel/vl050_8048nt_c01.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/vl050_8048nt_c01.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/display/panel/vl050_8048nt_c01.txt b/Documentation/devicetree/bindings/display/panel/vl050_8048nt_c01.txt new file mode 100644 index 000000000000..b42bf06bbd99 --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/vl050_8048nt_c01.txt @@ -0,0 +1,12 @@ +VXT 800x480 color TFT LCD panel + +Required properties: +- compatible: should be "vxt,vl050-8048nt-c01" +- power-supply: as specified in the base binding + +Optional properties: +- backlight: as specified in the base binding +- enable-gpios: as specified in the base binding + +This binding is compatible with the simple-panel binding, which is specified +in simple-panel.txt in this directory. -- cgit v1.3-14-g43fede From 7a4f4c31c5bcd214707ec217a6cf067185f15cf3 Mon Sep 17 00:00:00 2001 From: Jonathan Bakker Date: Fri, 22 Feb 2019 18:51:52 +0100 Subject: dt-bindings: panel: Add Samsung S6E63M0 panel documentation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This commit adds documentation for Samsung S6E63M0 AMOLED LCD panel driver. Signed-off-by: Jonathan Bakker Signed-off-by: Paweł Chmiel Reviewed-by: Rob Herring Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20190222175153.20567-1-pawel.mikolaj.chmiel@gmail.com --- .../bindings/display/panel/samsung,s6e63m0.txt | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/samsung,s6e63m0.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/display/panel/samsung,s6e63m0.txt b/Documentation/devicetree/bindings/display/panel/samsung,s6e63m0.txt new file mode 100644 index 000000000000..9fb9ebeef8e4 --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/samsung,s6e63m0.txt @@ -0,0 +1,33 @@ +Samsung s6e63m0 AMOLED LCD panel + +Required properties: + - compatible: "samsung,s6e63m0" + - reset-gpios: GPIO spec for reset pin + - vdd3-supply: VDD regulator + - vci-supply: VCI regulator + +The panel must obey rules for SPI slave device specified in document [1]. + +The device node can contain one 'port' child node with one child +'endpoint' node, according to the bindings defined in [2]. This +node should describe panel's video bus. + +[1]: Documentation/devicetree/bindings/spi/spi-bus.txt +[2]: Documentation/devicetree/bindings/media/video-interfaces.txt + +Example: + + s6e63m0: display@0 { + compatible = "samsung,s6e63m0"; + reg = <0>; + reset-gpio = <&mp05 5 1>; + vdd3-supply = <&ldo12_reg>; + vci-supply = <&ldo11_reg>; + spi-max-frequency = <1200000>; + + port { + lcd_ep: endpoint { + remote-endpoint = <&fimd_ep>; + }; + }; + }; -- cgit v1.3-14-g43fede From cc483ec1015a7926047281c497e5c7fac4b5df97 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 26 Feb 2019 09:55:20 +0200 Subject: dt-bindings: display: Add bindings for OSD101T2045-53TS This adds the device-tree bindings for the OSD101T2045-53TS 10.1" 1920x1200 panel from One Stop Displays. Signed-off-by: Peter Ujfalusi Reviewed-by: Rob Herring Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20190226075523.28997-2-peter.ujfalusi@ti.com --- .../bindings/display/panel/osddisplays,osd101t2045-53ts.txt | 11 +++++++++++ 1 file changed, 11 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/osddisplays,osd101t2045-53ts.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/display/panel/osddisplays,osd101t2045-53ts.txt b/Documentation/devicetree/bindings/display/panel/osddisplays,osd101t2045-53ts.txt new file mode 100644 index 000000000000..85c0b2cacfda --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/osddisplays,osd101t2045-53ts.txt @@ -0,0 +1,11 @@ +One Stop Displays OSD101T2045-53TS 10.1" 1920x1200 panel + +Required properties: +- compatible: should be "osddisplays,osd101t2045-53ts" +- power-supply: as specified in the base binding + +Optional properties: +- backlight: as specified in the base binding + +This binding is compatible with the simple-panel binding, which is specified +in simple-panel.txt in this directory. -- cgit v1.3-14-g43fede From 2de67cf78e7a62fb938396f82682b7396a90be89 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 26 Feb 2019 09:55:22 +0200 Subject: dt-bindings: display: Add bindings for OSD101T2587-53TS panel This adds the device-tree bindings for the OSD101T2587-53TS 10.1" 1920x1200 panel from One Stop Displays. Note: the panel is similar to OSD101T2045-53TS, but it needs additional MIPI_DSI_TURN_ON_PERIPHERAL message from the host. Signed-off-by: Peter Ujfalusi Reviewed-by: Rob Herring Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20190226075523.28997-4-peter.ujfalusi@ti.com --- .../display/panel/osddisplays,osd101t2587-53ts.txt | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/osddisplays,osd101t2587-53ts.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/display/panel/osddisplays,osd101t2587-53ts.txt b/Documentation/devicetree/bindings/display/panel/osddisplays,osd101t2587-53ts.txt new file mode 100644 index 000000000000..9d88e96003fc --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/osddisplays,osd101t2587-53ts.txt @@ -0,0 +1,14 @@ +One Stop Displays OSD101T2587-53TS 10.1" 1920x1200 panel + +The panel is similar to OSD101T2045-53TS, but it needs additional +MIPI_DSI_TURN_ON_PERIPHERAL message from the host. + +Required properties: +- compatible: should be "osddisplays,osd101t2587-53ts" +- power-supply: as specified in the base binding + +Optional properties: +- backlight: as specified in the base binding + +This binding is compatible with the simple-panel binding, which is specified +in simple-panel.txt in this directory. -- cgit v1.3-14-g43fede From fae186c8d63cadb5d1dc67735e8b3ed4e355b55c Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Tue, 19 Feb 2019 15:04:37 +0100 Subject: dt-bindings: display: Add ETM0430G0DH6 bindings Document the Emerging Display Technology Corp. (EDT) ETM0430G0DH6 display, which is a 480x272 4.3" TFT display. Signed-off-by: Marek Vasut Cc: Rob Herring Cc: Jan Tuerk Cc: Thierry Reding Cc: devicetree@vger.kernel.org Reviewed-by: Rob Herring Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20190219140438.17063-1-marex@denx.de --- Documentation/devicetree/bindings/display/panel/edt,et-series.txt | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/display/panel/edt,et-series.txt b/Documentation/devicetree/bindings/display/panel/edt,et-series.txt index f56b99ebd9be..d9f21d62422e 100644 --- a/Documentation/devicetree/bindings/display/panel/edt,et-series.txt +++ b/Documentation/devicetree/bindings/display/panel/edt,et-series.txt @@ -6,6 +6,14 @@ Display bindings for EDT Display Technology Corp. Displays which are compatible with the simple-panel binding, which is specified in simple-panel.txt +4,3" WVGA TFT Panels +-------------------- + ++-----------------+---------------------+-------------------------------------+ +| Identifier | compatbile | description | ++=================+=====================+=====================================+ +| ETM0430G0DH6 | edt,etm0430g0dh6 | 480x272 TFT Display | ++-----------------+---------------------+-------------------------------------+ 5,7" WVGA TFT Panels -------------------- -- cgit v1.3-14-g43fede From b1b0d36bdb157e46a049920aa2b607fd17489f4e Mon Sep 17 00:00:00 2001 From: Jyri Sarha Date: Fri, 22 Mar 2019 10:33:35 +0200 Subject: dt-bindings: drm/panel: simple: Add binding for TFC S9700RTWV43TR-01B Add bindign for TFC S9700RTWV43TR-01B 7" Three Five Corp 800x480 LCD panel with resistive touch. The panel is found on TI AM335x-evm. Signed-off-by: Jyri Sarha Reviewed-by: Rob Herring Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/24fea39438decd1e17a9c9afa320d49aca03f60d.1553243203.git.jsarha@ti.com --- .../bindings/display/panel/tfc,s9700rtwv43tr-01b.txt | 15 +++++++++++++++ Documentation/devicetree/bindings/vendor-prefixes.txt | 1 + 2 files changed, 16 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/tfc,s9700rtwv43tr-01b.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/display/panel/tfc,s9700rtwv43tr-01b.txt b/Documentation/devicetree/bindings/display/panel/tfc,s9700rtwv43tr-01b.txt new file mode 100644 index 000000000000..dfb572f085eb --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/tfc,s9700rtwv43tr-01b.txt @@ -0,0 +1,15 @@ +TFC S9700RTWV43TR-01B 7" Three Five Corp 800x480 LCD panel with +resistive touch + +The panel is found on TI AM335x-evm. + +Required properties: +- compatible: should be "tfc,s9700rtwv43tr-01b" +- power-supply: See panel-common.txt + +Optional properties: +- enable-gpios: GPIO pin to enable or disable the panel, if there is one +- backlight: phandle of the backlight device attached to the panel + +This binding is compatible with the simple-panel binding, which is specified +in simple-panel.txt in this directory. diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 433e03fbe078..b46a2752eb88 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -406,6 +406,7 @@ technologic Technologic Systems tempo Tempo Semiconductor techstar Shenzhen Techstar Electronics Co., Ltd. terasic Terasic Inc. +tfc Three Five Corp thine THine Electronics, Inc. ti Texas Instruments tianma Tianma Micro-electronics Co., Ltd. -- cgit v1.3-14-g43fede From c9219ae4bd5db34a3b14e1e01bed2c7ef2ad9a16 Mon Sep 17 00:00:00 2001 From: Marco Felsch Date: Tue, 16 Apr 2019 12:16:29 +0200 Subject: dt-bindings: display: add EDT ET035012DM6 display description Add support for the ET035012DM6 3.5" QVGA TFT LCD panel. The datasheet can be retrieved online: https://www.glynshop.com/erp/owweb/Daten/DSS/EDT/Products/ \ Specifications/Active%20Displays/ET035012DM6.pdf Signed-off-by: Marco Felsch Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20190416101630.3482-1-m.felsch@pengutronix.de --- Documentation/devicetree/bindings/display/panel/edt,et-series.txt | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/display/panel/edt,et-series.txt b/Documentation/devicetree/bindings/display/panel/edt,et-series.txt index d9f21d62422e..be8684327ee4 100644 --- a/Documentation/devicetree/bindings/display/panel/edt,et-series.txt +++ b/Documentation/devicetree/bindings/display/panel/edt,et-series.txt @@ -6,6 +6,14 @@ Display bindings for EDT Display Technology Corp. Displays which are compatible with the simple-panel binding, which is specified in simple-panel.txt +3,5" QVGA TFT Panels +-------------------- ++-----------------+---------------------+-------------------------------------+ +| Identifier | compatbile | description | ++=================+=====================+=====================================+ +| ET035012DM6 | edt,et035012dm6 | 3.5" QVGA TFT LCD panel | ++-----------------+---------------------+-------------------------------------+ + 4,3" WVGA TFT Panels -------------------- -- cgit v1.3-14-g43fede From fbd8b69ab61669cd9d11dbccfb0f0ee42862af67 Mon Sep 17 00:00:00 2001 From: Marco Felsch Date: Tue, 16 Apr 2019 12:06:43 +0200 Subject: dt-bindings: Add vendor prefix for Evervision Electronics Evervision Electronics is a panel manufacturer from Taipei. http://www.evervisionlcd.com/index.php?lang=en Signed-off-by: Marco Felsch Reviewed-by: Rob Herring Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20190416100645.21689-2-m.felsch@pengutronix.de --- Documentation/devicetree/bindings/vendor-prefixes.txt | 1 + 1 file changed, 1 insertion(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index b46a2752eb88..873dbafa6698 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -132,6 +132,7 @@ ettus NI Ettus Research eukrea Eukréa Electromatique everest Everest Semiconductor Co. Ltd. everspin Everspin Technologies, Inc. +evervision Evervision Electronics Co. Ltd. exar Exar Corporation excito Excito ezchip EZchip Semiconductor -- cgit v1.3-14-g43fede From 81c2d54ad97765e837733172f81415fe5006d5fb Mon Sep 17 00:00:00 2001 From: Marco Felsch Date: Tue, 16 Apr 2019 12:06:44 +0200 Subject: dt-bindings: Add Evervision VGG804821 panel Add device tree bindings for the Evervision VG804821 800x480 5.0" LCD TFT parallel panel. Signed-off-by: Marco Felsch Reviewed-by: Rob Herring Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/20190416100645.21689-3-m.felsch@pengutronix.de --- .../bindings/display/panel/evervision,vgg804821.txt | 12 ++++++++++++ 1 file changed, 12 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/evervision,vgg804821.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/display/panel/evervision,vgg804821.txt b/Documentation/devicetree/bindings/display/panel/evervision,vgg804821.txt new file mode 100644 index 000000000000..82d22e191ac3 --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/evervision,vgg804821.txt @@ -0,0 +1,12 @@ +Evervision Electronics Co. Ltd. VGG804821 5.0" WVGA TFT LCD Panel + +Required properties: +- compatible: should be "evervision,vgg804821" +- power-supply: See simple-panel.txt + +Optional properties: +- backlight: See simple-panel.txt +- enable-gpios: See simple-panel.txt + +This binding is compatible with the simple-panel binding, which is specified +in simple-panel.txt in this directory. -- cgit v1.3-14-g43fede From 788033a92a4def4c966296be0276100954841ab2 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Sat, 26 Jan 2019 20:27:32 +0100 Subject: drm: drop drm_bus from todo David Herrmann removed the last bits of drm_bus in: commit c5786fe5f1c5 ("drm: Goody bye, drm_bus!") Remove the todo item. Signed-off-by: Sam Ravnborg Reviewed-by: David Herrmann [I miss drm_bus!] Cc: David Airlie Cc: Daniel Vetter Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20190126192732.15263-1-sam@ravnborg.org Link: https://patchwork.freedesktop.org/patch/msgid/20190126192732.15263-1-sam@ravnborg.org --- Documentation/gpu/todo.rst | 19 ------------------- 1 file changed, 19 deletions(-) (limited to 'Documentation') diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst index 1528ad2d598b..06ccff9165d5 100644 --- a/Documentation/gpu/todo.rst +++ b/Documentation/gpu/todo.rst @@ -10,25 +10,6 @@ graphics subsystem useful as newbie projects. Or for slow rainy days. Subsystem-wide refactorings =========================== -De-midlayer drivers -------------------- - -With the recent ``drm_bus`` cleanup patches for 3.17 it is no longer required -to have a ``drm_bus`` structure set up. Drivers can directly set up the -``drm_device`` structure instead of relying on bus methods in ``drm_usb.c`` -and ``drm_pci.c``. The goal is to get rid of the driver's ``->load`` / -``->unload`` callbacks and open-code the load/unload sequence properly, using -the new two-stage ``drm_device`` setup/teardown. - -Once all existing drivers are converted we can also remove those bus support -files for USB and platform devices. - -All you need is a GPU for a non-converted driver (currently almost all of -them, but also all the virtual ones used by KVM, so everyone qualifies). - -Contact: Daniel Vetter, Thierry Reding, respective driver maintainers - - Remove custom dumb_map_offset implementations --------------------------------------------- -- cgit v1.3-14-g43fede From 19b44b5257663fec1fea5cf62f4385a442b7a640 Mon Sep 17 00:00:00 2001 From: Jagan Teki Date: Tue, 7 May 2019 18:37:06 +0530 Subject: dt-bindings: display: Document FriendlyELEC HD702E LCD panel HD702E lcd is FriendlyELEC developed eDP LCD panel with 800x1280 resolution. It has built in Goodix, GT9271 captive touchscreen with backlight adjustable via PWM. Add dt-bindings documentation for it. Signed-off-by: Jagan Teki Reviewed-by: Rob Herring Cc: Thierry Reding Cc: David Airlie Cc: Daniel Vetter Cc: dri-devel@lists.freedesktop.org Signed-off-by: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20190507130708.11255-1-jagan@amarulasolutions.com --- .../bindings/display/panel/friendlyarm,hd702e.txt | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/panel/friendlyarm,hd702e.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/display/panel/friendlyarm,hd702e.txt b/Documentation/devicetree/bindings/display/panel/friendlyarm,hd702e.txt new file mode 100644 index 000000000000..6c9156fc3478 --- /dev/null +++ b/Documentation/devicetree/bindings/display/panel/friendlyarm,hd702e.txt @@ -0,0 +1,32 @@ +FriendlyELEC HD702E 800x1280 LCD panel + +HD702E lcd is FriendlyELEC developed eDP LCD panel with 800x1280 +resolution. It has built in Goodix, GT9271 captive touchscreen +with backlight adjustable via PWM. + +Required properties: +- compatible: should be "friendlyarm,hd702e" +- power-supply: regulator to provide the supply voltage + +Optional properties: +- backlight: phandle of the backlight device attached to the panel + +Optional nodes: +- Video port for LCD panel input. + +This binding is compatible with the simple-panel binding, which is specified +in simple-panel.txt in this directory. + +Example: + + panel { + compatible ="friendlyarm,hd702e", "simple-panel"; + backlight = <&backlight>; + power-supply = <&vcc3v3_sys>; + + port { + panel_in_edp: endpoint { + remote-endpoint = <&edp_out_panel>; + }; + }; + }; -- cgit v1.3-14-g43fede From 03a9606e7feef902979bbc0601d6d93e764f251d Mon Sep 17 00:00:00 2001 From: Noralf Trønnes Date: Mon, 6 May 2019 20:01:30 +0200 Subject: drm/fb-helper: Avoid race with DRM userspace MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit drm_fb_helper_is_bound() is used to check if DRM userspace is in control. This is done by looking at the fb on the primary plane. By the time fb-helper gets around to committing, it's possible that the facts have changed. Avoid this race by holding the drm_device->master_mutex lock while committing. When DRM userspace does its first open, it will now wait until fb-helper is done. The helper will stay away if there's a master. Two igt tests fail with the new 'bail out if master' rule. Work around this by relaxing this rule for drm_fb_helper_restore_fbdev_mode_unlocked() until the tests have been fixed. Add todo entry for this. Locking rule: Always take the fb-helper lock first. v5: drm_fb_helper_restore_fbdev_mode_unlocked(): Use restore_fbdev_mode_force() v2: - Remove drm_fb_helper_is_bound() (Daniel Vetter) - No need to check fb_helper->dev->master in drm_fb_helper_single_fb_probe(), restore_fbdev_mode() has the check. Suggested-by: Daniel Vetter Signed-off-by: Noralf Trønnes Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190506180139.6913-3-noralf@tronnes.org --- Documentation/gpu/todo.rst | 8 ++++ drivers/gpu/drm/drm_auth.c | 20 ++++++++ drivers/gpu/drm/drm_fb_helper.c | 102 ++++++++++++++++++++++------------------ drivers/gpu/drm/drm_internal.h | 2 + 4 files changed, 86 insertions(+), 46 deletions(-) (limited to 'Documentation') diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst index 06ccff9165d5..66f05f4e469f 100644 --- a/Documentation/gpu/todo.rst +++ b/Documentation/gpu/todo.rst @@ -281,6 +281,14 @@ it to use drm_mode_hsync() instead. Contact: Sean Paul +drm_fb_helper tasks +------------------- + +- drm_fb_helper_restore_fbdev_mode_unlocked() should call restore_fbdev_mode() + not the _force variant so it can bail out if there is a master. But first + these igt tests need to be fixed: kms_fbcon_fbt@psr and + kms_fbcon_fbt@psr-suspend. + Core refactorings ================= diff --git a/drivers/gpu/drm/drm_auth.c b/drivers/gpu/drm/drm_auth.c index 22c7a104b802..bf98402f3210 100644 --- a/drivers/gpu/drm/drm_auth.c +++ b/drivers/gpu/drm/drm_auth.c @@ -351,3 +351,23 @@ void drm_master_put(struct drm_master **master) *master = NULL; } EXPORT_SYMBOL(drm_master_put); + +/* Used by drm_client and drm_fb_helper */ +bool drm_master_internal_acquire(struct drm_device *dev) +{ + mutex_lock(&dev->master_mutex); + if (dev->master) { + mutex_unlock(&dev->master_mutex); + return false; + } + + return true; +} +EXPORT_SYMBOL(drm_master_internal_acquire); + +/* Used by drm_client and drm_fb_helper */ +void drm_master_internal_release(struct drm_device *dev) +{ + mutex_unlock(&dev->master_mutex); +} +EXPORT_SYMBOL(drm_master_internal_release); diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 498f95c3e81d..c521e7490380 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -44,6 +44,7 @@ #include "drm_crtc_internal.h" #include "drm_crtc_helper_internal.h" +#include "drm_internal.h" static bool drm_fbdev_emulation = true; module_param_named(fbdev_emulation, drm_fbdev_emulation, bool, 0600); @@ -509,7 +510,7 @@ out: return ret; } -static int restore_fbdev_mode(struct drm_fb_helper *fb_helper) +static int restore_fbdev_mode_force(struct drm_fb_helper *fb_helper) { struct drm_device *dev = fb_helper->dev; @@ -519,6 +520,21 @@ static int restore_fbdev_mode(struct drm_fb_helper *fb_helper) return restore_fbdev_mode_legacy(fb_helper); } +static int restore_fbdev_mode(struct drm_fb_helper *fb_helper) +{ + struct drm_device *dev = fb_helper->dev; + int ret; + + if (!drm_master_internal_acquire(dev)) + return -EBUSY; + + ret = restore_fbdev_mode_force(fb_helper); + + drm_master_internal_release(dev); + + return ret; +} + /** * drm_fb_helper_restore_fbdev_mode_unlocked - restore fbdev configuration * @fb_helper: driver-allocated fbdev helper, can be NULL @@ -542,7 +558,17 @@ int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper) return 0; mutex_lock(&fb_helper->lock); - ret = restore_fbdev_mode(fb_helper); + /* + * TODO: + * We should bail out here if there is a master by dropping _force. + * Currently these igt tests fail if we do that: + * - kms_fbcon_fbt@psr + * - kms_fbcon_fbt@psr-suspend + * + * So first these tests need to be fixed so they drop master or don't + * have an fd open. + */ + ret = restore_fbdev_mode_force(fb_helper); do_delayed = fb_helper->delayed_hotplug; if (do_delayed) @@ -556,34 +582,6 @@ int drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper) } EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode_unlocked); -static bool drm_fb_helper_is_bound(struct drm_fb_helper *fb_helper) -{ - struct drm_device *dev = fb_helper->dev; - struct drm_crtc *crtc; - int bound = 0, crtcs_bound = 0; - - /* - * Sometimes user space wants everything disabled, so don't steal the - * display if there's a master. - */ - if (READ_ONCE(dev->master)) - return false; - - drm_for_each_crtc(crtc, dev) { - drm_modeset_lock(&crtc->mutex, NULL); - if (crtc->primary->fb) - crtcs_bound++; - if (crtc->primary->fb == fb_helper->fb) - bound++; - drm_modeset_unlock(&crtc->mutex); - } - - if (bound < crtcs_bound) - return false; - - return true; -} - #ifdef CONFIG_MAGIC_SYSRQ /* * restore fbcon display for all kms driver's using this helper, used for sysrq @@ -604,7 +602,7 @@ static bool drm_fb_helper_force_kernel_mode(void) continue; mutex_lock(&helper->lock); - ret = restore_fbdev_mode(helper); + ret = restore_fbdev_mode_force(helper); if (ret) error = true; mutex_unlock(&helper->lock); @@ -663,20 +661,22 @@ static void dpms_legacy(struct drm_fb_helper *fb_helper, int dpms_mode) static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode) { struct drm_fb_helper *fb_helper = info->par; + struct drm_device *dev = fb_helper->dev; /* * For each CRTC in this fb, turn the connectors on/off. */ mutex_lock(&fb_helper->lock); - if (!drm_fb_helper_is_bound(fb_helper)) { - mutex_unlock(&fb_helper->lock); - return; - } + if (!drm_master_internal_acquire(dev)) + goto unlock; - if (drm_drv_uses_atomic_modeset(fb_helper->dev)) + if (drm_drv_uses_atomic_modeset(dev)) restore_fbdev_mode_atomic(fb_helper, dpms_mode == DRM_MODE_DPMS_ON); else dpms_legacy(fb_helper, dpms_mode); + + drm_master_internal_release(dev); +unlock: mutex_unlock(&fb_helper->lock); } @@ -1509,6 +1509,7 @@ backoff: int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) { struct drm_fb_helper *fb_helper = info->par; + struct drm_device *dev = fb_helper->dev; int ret; if (oops_in_progress) @@ -1516,9 +1517,9 @@ int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) mutex_lock(&fb_helper->lock); - if (!drm_fb_helper_is_bound(fb_helper)) { + if (!drm_master_internal_acquire(dev)) { ret = -EBUSY; - goto out; + goto unlock; } if (info->fix.visual == FB_VISUAL_TRUECOLOR) @@ -1528,7 +1529,8 @@ int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) else ret = setcmap_legacy(cmap, info); -out: + drm_master_internal_release(dev); +unlock: mutex_unlock(&fb_helper->lock); return ret; @@ -1548,12 +1550,13 @@ int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg) { struct drm_fb_helper *fb_helper = info->par; + struct drm_device *dev = fb_helper->dev; struct drm_mode_set *mode_set; struct drm_crtc *crtc; int ret = 0; mutex_lock(&fb_helper->lock); - if (!drm_fb_helper_is_bound(fb_helper)) { + if (!drm_master_internal_acquire(dev)) { ret = -EBUSY; goto unlock; } @@ -1591,11 +1594,12 @@ int drm_fb_helper_ioctl(struct fb_info *info, unsigned int cmd, } ret = 0; - goto unlock; + break; default: ret = -ENOTTY; } + drm_master_internal_release(dev); unlock: mutex_unlock(&fb_helper->lock); return ret; @@ -1847,15 +1851,18 @@ int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, return -EBUSY; mutex_lock(&fb_helper->lock); - if (!drm_fb_helper_is_bound(fb_helper)) { - mutex_unlock(&fb_helper->lock); - return -EBUSY; + if (!drm_master_internal_acquire(dev)) { + ret = -EBUSY; + goto unlock; } if (drm_drv_uses_atomic_modeset(dev)) ret = pan_display_atomic(var, info); else ret = pan_display_legacy(var, info); + + drm_master_internal_release(dev); +unlock: mutex_unlock(&fb_helper->lock); return ret; @@ -2014,7 +2021,7 @@ static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, DRM_INFO("Cannot find any crtc or sizes\n"); /* First time: disable all crtc's.. */ - if (!fb_helper->deferred_setup && !READ_ONCE(fb_helper->dev->master)) + if (!fb_helper->deferred_setup) restore_fbdev_mode(fb_helper); return -EAGAIN; } @@ -3029,6 +3036,7 @@ EXPORT_SYMBOL(drm_fb_helper_initial_config); */ int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) { + struct drm_device *dev = fb_helper->dev; int err = 0; if (!drm_fbdev_emulation || !fb_helper) @@ -3041,12 +3049,14 @@ int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) return err; } - if (!fb_helper->fb || !drm_fb_helper_is_bound(fb_helper)) { + if (!fb_helper->fb || !drm_master_internal_acquire(dev)) { fb_helper->delayed_hotplug = true; mutex_unlock(&fb_helper->lock); return err; } + drm_master_internal_release(dev); + DRM_DEBUG_KMS("\n"); drm_setup_crtcs(fb_helper, fb_helper->fb->width, fb_helper->fb->height); diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h index e19ac7ca602d..e6281d9f9c87 100644 --- a/drivers/gpu/drm/drm_internal.h +++ b/drivers/gpu/drm/drm_internal.h @@ -93,6 +93,8 @@ int drm_dropmaster_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int drm_master_open(struct drm_file *file_priv); void drm_master_release(struct drm_file *file_priv); +bool drm_master_internal_acquire(struct drm_device *dev); +void drm_master_internal_release(struct drm_device *dev); /* drm_sysfs.c */ extern struct class *drm_class; -- cgit v1.3-14-g43fede From 85438a8ddf031f416758ecf8c080ff92075acb01 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Wed, 8 May 2019 10:26:11 +0200 Subject: drm: Add |struct drm_gem_vram_object| and helpers The type |struct drm_gem_vram_object| implements a GEM object for simple framebuffer devices with dedicated video memory. The BO is either located in VRAM or system memory. The implementation has been created from the respective code in ast, bochs and mgag200. These drivers copy their implementation from each other; except for the names of several data types. The helpers are currently build with TTM, but this is considered an implementation detail and may change in future updates. v5: * do WARN_ON_ONCE for pin-count mismatches * allocate only 2 entries in placements array v4: * cleanups from checkpatch.pl * removed several fixed-size types from interfaces * DRM_VRAM_HELPER now selects DRM_TTM * remove separate config option for GEM VRAM v2: * rename to |struct drm_gem_vram_object| * move drm_is_gem_ttm() to a later patch in the series * add drm_gem_vram_kmap_at() * return is_iomem from kmap functions * redefine TTM placement flags for public interface * documentation fixes Signed-off-by: Thomas Zimmermann Link: http://patchwork.freedesktop.org/patch/msgid/20190508082630.15116-2-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann --- Documentation/gpu/drm-mm.rst | 15 ++ drivers/gpu/drm/Kconfig | 7 + drivers/gpu/drm/Makefile | 4 + drivers/gpu/drm/drm_gem_vram_helper.c | 412 +++++++++++++++++++++++++++++++ drivers/gpu/drm/drm_vram_helper_common.c | 6 + include/drm/drm_gem_vram_helper.h | 92 +++++++ 6 files changed, 536 insertions(+) create mode 100644 drivers/gpu/drm/drm_gem_vram_helper.c create mode 100644 drivers/gpu/drm/drm_vram_helper_common.c create mode 100644 include/drm/drm_gem_vram_helper.h (limited to 'Documentation') diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst index 54a696d961a7..a3b685089512 100644 --- a/Documentation/gpu/drm-mm.rst +++ b/Documentation/gpu/drm-mm.rst @@ -380,6 +380,21 @@ GEM CMA Helper Functions Reference .. kernel-doc:: drivers/gpu/drm/drm_gem_cma_helper.c :export: +VRAM Helper Function Reference +============================== + +GEM VRAM Helper Functions Reference +----------------------------------- + +.. kernel-doc:: drivers/gpu/drm/drm_gem_vram_helper.c + :doc: overview + +.. kernel-doc:: include/drm/drm_gem_vram_helper.h + :internal: + +.. kernel-doc:: drivers/gpu/drm/drm_gem_vram_helper.c + :export: + VMA Offset Manager ================== diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 2267e84d5cb4..13d7b321db0d 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -160,6 +160,13 @@ config DRM_TTM GPU memory types. Will be enabled automatically if a device driver uses it. +config DRM_VRAM_HELPER + tristate + depends on DRM + select DRM_TTM + help + Helpers for VRAM memory management + config DRM_GEM_CMA_HELPER bool depends on DRM diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 72f5036d9bfa..ed49b2480766 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -32,6 +32,10 @@ drm-$(CONFIG_AGP) += drm_agpsupport.o drm-$(CONFIG_DEBUG_FS) += drm_debugfs.o drm_debugfs_crc.o drm-$(CONFIG_DRM_LOAD_EDID_FIRMWARE) += drm_edid_load.o +drm_vram_helper-y := drm_gem_vram_helper.o \ + drm_vram_helper_common.o +obj-$(CONFIG_DRM_VRAM_HELPER) += drm_vram_helper.o + drm_kms_helper-y := drm_crtc_helper.o drm_dp_helper.o drm_dsc.o drm_probe_helper.o \ drm_plane_helper.o drm_dp_mst_topology.o drm_atomic_helper.o \ drm_kms_helper_common.o drm_dp_dual_mode_helper.o \ diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c new file mode 100644 index 000000000000..761a546412f8 --- /dev/null +++ b/drivers/gpu/drm/drm_gem_vram_helper.c @@ -0,0 +1,412 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include +#include + +/** + * DOC: overview + * + * This library provides a GEM buffer object that is backed by video RAM + * (VRAM). It can be used for framebuffer devices with dedicated memory. + */ + +/* + * Buffer-objects helpers + */ + +static void drm_gem_vram_cleanup(struct drm_gem_vram_object *gbo) +{ + /* We got here via ttm_bo_put(), which means that the + * TTM buffer object in 'bo' has already been cleaned + * up; only release the GEM object. + */ + drm_gem_object_release(&gbo->gem); +} + +static void drm_gem_vram_destroy(struct drm_gem_vram_object *gbo) +{ + drm_gem_vram_cleanup(gbo); + kfree(gbo); +} + +static void ttm_buffer_object_destroy(struct ttm_buffer_object *bo) +{ + struct drm_gem_vram_object *gbo = drm_gem_vram_of_bo(bo); + + drm_gem_vram_destroy(gbo); +} + +static void drm_gem_vram_placement(struct drm_gem_vram_object *gbo, + unsigned long pl_flag) +{ + unsigned int i; + unsigned int c = 0; + + gbo->placement.placement = gbo->placements; + gbo->placement.busy_placement = gbo->placements; + + if (pl_flag & TTM_PL_FLAG_VRAM) + gbo->placements[c++].flags = TTM_PL_FLAG_WC | + TTM_PL_FLAG_UNCACHED | + TTM_PL_FLAG_VRAM; + + if (pl_flag & TTM_PL_FLAG_SYSTEM) + gbo->placements[c++].flags = TTM_PL_MASK_CACHING | + TTM_PL_FLAG_SYSTEM; + + if (!c) + gbo->placements[c++].flags = TTM_PL_MASK_CACHING | + TTM_PL_FLAG_SYSTEM; + + gbo->placement.num_placement = c; + gbo->placement.num_busy_placement = c; + + for (i = 0; i < c; ++i) { + gbo->placements[i].fpfn = 0; + gbo->placements[i].lpfn = 0; + } +} + +static int drm_gem_vram_init(struct drm_device *dev, + struct ttm_bo_device *bdev, + struct drm_gem_vram_object *gbo, + size_t size, unsigned long pg_align, + bool interruptible) +{ + int ret; + size_t acc_size; + + ret = drm_gem_object_init(dev, &gbo->gem, size); + if (ret) + return ret; + + acc_size = ttm_bo_dma_acc_size(bdev, size, sizeof(*gbo)); + + gbo->bo.bdev = bdev; + drm_gem_vram_placement(gbo, TTM_PL_FLAG_VRAM | TTM_PL_FLAG_SYSTEM); + + ret = ttm_bo_init(bdev, &gbo->bo, size, ttm_bo_type_device, + &gbo->placement, pg_align, interruptible, acc_size, + NULL, NULL, ttm_buffer_object_destroy); + if (ret) + goto err_drm_gem_object_release; + + return 0; + +err_drm_gem_object_release: + drm_gem_object_release(&gbo->gem); + return ret; +} + +/** + * drm_gem_vram_create() - Creates a VRAM-backed GEM object + * @dev: the DRM device + * @bdev: the TTM BO device backing the object + * @size: the buffer size in bytes + * @pg_align: the buffer's alignment in multiples of the page size + * @interruptible: sleep interruptible if waiting for memory + * + * Returns: + * A new instance of &struct drm_gem_vram_object on success, or + * an ERR_PTR()-encoded error code otherwise. + */ +struct drm_gem_vram_object *drm_gem_vram_create(struct drm_device *dev, + struct ttm_bo_device *bdev, + size_t size, + unsigned long pg_align, + bool interruptible) +{ + struct drm_gem_vram_object *gbo; + int ret; + + gbo = kzalloc(sizeof(*gbo), GFP_KERNEL); + if (!gbo) + return ERR_PTR(-ENOMEM); + + ret = drm_gem_vram_init(dev, bdev, gbo, size, pg_align, interruptible); + if (ret < 0) + goto err_kfree; + + return gbo; + +err_kfree: + kfree(gbo); + return ERR_PTR(ret); +} +EXPORT_SYMBOL(drm_gem_vram_create); + +/** + * drm_gem_vram_put() - Releases a reference to a VRAM-backed GEM object + * @gbo: the GEM VRAM object + * + * See ttm_bo_put() for more information. + */ +void drm_gem_vram_put(struct drm_gem_vram_object *gbo) +{ + ttm_bo_put(&gbo->bo); +} +EXPORT_SYMBOL(drm_gem_vram_put); + +/** + * drm_gem_vram_reserve() - Reserves a VRAM-backed GEM object + * @gbo: the GEM VRAM object + * @no_wait: don't wait for buffer object to become available + * + * See ttm_bo_reserve() for more information. + * + * Returns: + * 0 on success, or + * a negative error code otherwise + */ +int drm_gem_vram_reserve(struct drm_gem_vram_object *gbo, bool no_wait) +{ + return ttm_bo_reserve(&gbo->bo, true, no_wait, NULL); +} +EXPORT_SYMBOL(drm_gem_vram_reserve); + +/** + * drm_gem_vram_unreserve() - \ + Release a reservation acquired by drm_gem_vram_reserve() + * @gbo: the GEM VRAM object + * + * See ttm_bo_unreserve() for more information. + */ +void drm_gem_vram_unreserve(struct drm_gem_vram_object *gbo) +{ + ttm_bo_unreserve(&gbo->bo); +} +EXPORT_SYMBOL(drm_gem_vram_unreserve); + +/** + * drm_gem_vram_mmap_offset() - Returns a GEM VRAM object's mmap offset + * @gbo: the GEM VRAM object + * + * See drm_vma_node_offset_addr() for more information. + * + * Returns: + * The buffer object's offset for userspace mappings on success, or + * 0 if no offset is allocated. + */ +u64 drm_gem_vram_mmap_offset(struct drm_gem_vram_object *gbo) +{ + return drm_vma_node_offset_addr(&gbo->bo.vma_node); +} +EXPORT_SYMBOL(drm_gem_vram_mmap_offset); + +/** + * drm_gem_vram_offset() - \ + Returns a GEM VRAM object's offset in video memory + * @gbo: the GEM VRAM object + * + * This function returns the buffer object's offset in the device's video + * memory. The buffer object has to be pinned to %TTM_PL_VRAM. + * + * Returns: + * The buffer object's offset in video memory on success, or + * a negative errno code otherwise. + */ +s64 drm_gem_vram_offset(struct drm_gem_vram_object *gbo) +{ + if (WARN_ON_ONCE(!gbo->pin_count)) + return (s64)-ENODEV; + return gbo->bo.offset; +} +EXPORT_SYMBOL(drm_gem_vram_offset); + +/** + * drm_gem_vram_pin() - Pins a GEM VRAM object in a region. + * @gbo: the GEM VRAM object + * @pl_flag: a bitmask of possible memory regions + * + * Pinning a buffer object ensures that it is not evicted from + * a memory region. A pinned buffer object has to be unpinned before + * it can be pinned to another region. + * + * Returns: + * 0 on success, or + * a negative error code otherwise. + */ +int drm_gem_vram_pin(struct drm_gem_vram_object *gbo, unsigned long pl_flag) +{ + int i, ret; + struct ttm_operation_ctx ctx = { false, false }; + + if (gbo->pin_count) { + ++gbo->pin_count; + return 0; + } + + drm_gem_vram_placement(gbo, pl_flag); + for (i = 0; i < gbo->placement.num_placement; ++i) + gbo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; + + ret = ttm_bo_validate(&gbo->bo, &gbo->placement, &ctx); + if (ret < 0) + return ret; + + gbo->pin_count = 1; + + return 0; +} +EXPORT_SYMBOL(drm_gem_vram_pin); + +/** + * drm_gem_vram_unpin() - Unpins a GEM VRAM object + * @gbo: the GEM VRAM object + * + * Returns: + * 0 on success, or + * a negative error code otherwise. + */ +int drm_gem_vram_unpin(struct drm_gem_vram_object *gbo) +{ + int i, ret; + struct ttm_operation_ctx ctx = { false, false }; + + if (WARN_ON_ONCE(!gbo->pin_count)) + return 0; + + --gbo->pin_count; + if (gbo->pin_count) + return 0; + + for (i = 0; i < gbo->placement.num_placement ; ++i) + gbo->placements[i].flags &= ~TTM_PL_FLAG_NO_EVICT; + + ret = ttm_bo_validate(&gbo->bo, &gbo->placement, &ctx); + if (ret < 0) + return ret; + + return 0; +} +EXPORT_SYMBOL(drm_gem_vram_unpin); + +/** + * drm_gem_vram_push_to_system() - \ + Unpins a GEM VRAM object and moves it to system memory + * @gbo: the GEM VRAM object + * + * This operation only works if the caller holds the final pin on the + * buffer object. + * + * Returns: + * 0 on success, or + * a negative error code otherwise. + */ +int drm_gem_vram_push_to_system(struct drm_gem_vram_object *gbo) +{ + int i, ret; + struct ttm_operation_ctx ctx = { false, false }; + + if (WARN_ON_ONCE(!gbo->pin_count)) + return 0; + + --gbo->pin_count; + if (gbo->pin_count) + return 0; + + if (gbo->kmap.virtual) + ttm_bo_kunmap(&gbo->kmap); + + drm_gem_vram_placement(gbo, TTM_PL_FLAG_SYSTEM); + for (i = 0; i < gbo->placement.num_placement ; ++i) + gbo->placements[i].flags |= TTM_PL_FLAG_NO_EVICT; + + ret = ttm_bo_validate(&gbo->bo, &gbo->placement, &ctx); + if (ret) + return ret; + + return 0; +} +EXPORT_SYMBOL(drm_gem_vram_push_to_system); + +/** + * drm_gem_vram_kmap_at() - Maps a GEM VRAM object into kernel address space + * @gbo: the GEM VRAM object + * @map: establish a mapping if necessary + * @is_iomem: returns true if the mapped memory is I/O memory, or false \ + otherwise; can be NULL + * @kmap: the mapping's kmap object + * + * This function maps the buffer object into the kernel's address space + * or returns the current mapping. If the parameter map is false, the + * function only queries the current mapping, but does not establish a + * new one. + * + * Returns: + * The buffers virtual address if mapped, or + * NULL if not mapped, or + * an ERR_PTR()-encoded error code otherwise. + */ +void *drm_gem_vram_kmap_at(struct drm_gem_vram_object *gbo, bool map, + bool *is_iomem, struct ttm_bo_kmap_obj *kmap) +{ + int ret; + + if (kmap->virtual || !map) + goto out; + + ret = ttm_bo_kmap(&gbo->bo, 0, gbo->bo.num_pages, kmap); + if (ret) + return ERR_PTR(ret); + +out: + if (!is_iomem) + return kmap->virtual; + if (!kmap->virtual) { + *is_iomem = false; + return NULL; + } + return ttm_kmap_obj_virtual(kmap, is_iomem); +} +EXPORT_SYMBOL(drm_gem_vram_kmap_at); + +/** + * drm_gem_vram_kmap() - Maps a GEM VRAM object into kernel address space + * @gbo: the GEM VRAM object + * @map: establish a mapping if necessary + * @is_iomem: returns true if the mapped memory is I/O memory, or false \ + otherwise; can be NULL + * + * This function maps the buffer object into the kernel's address space + * or returns the current mapping. If the parameter map is false, the + * function only queries the current mapping, but does not establish a + * new one. + * + * Returns: + * The buffers virtual address if mapped, or + * NULL if not mapped, or + * an ERR_PTR()-encoded error code otherwise. + */ +void *drm_gem_vram_kmap(struct drm_gem_vram_object *gbo, bool map, + bool *is_iomem) +{ + return drm_gem_vram_kmap_at(gbo, map, is_iomem, &gbo->kmap); +} +EXPORT_SYMBOL(drm_gem_vram_kmap); + +/** + * drm_gem_vram_kunmap_at() - Unmaps a GEM VRAM object + * @gbo: the GEM VRAM object + * @kmap: the mapping's kmap object + */ +void drm_gem_vram_kunmap_at(struct drm_gem_vram_object *gbo, + struct ttm_bo_kmap_obj *kmap) +{ + if (!kmap->virtual) + return; + + ttm_bo_kunmap(kmap); + kmap->virtual = NULL; +} +EXPORT_SYMBOL(drm_gem_vram_kunmap_at); + +/** + * drm_gem_vram_kunmap() - Unmaps a GEM VRAM object + * @gbo: the GEM VRAM object + */ +void drm_gem_vram_kunmap(struct drm_gem_vram_object *gbo) +{ + drm_gem_vram_kunmap_at(gbo, &gbo->kmap); +} +EXPORT_SYMBOL(drm_gem_vram_kunmap); diff --git a/drivers/gpu/drm/drm_vram_helper_common.c b/drivers/gpu/drm/drm_vram_helper_common.c new file mode 100644 index 000000000000..7c25daca18d0 --- /dev/null +++ b/drivers/gpu/drm/drm_vram_helper_common.c @@ -0,0 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include + +MODULE_DESCRIPTION("DRM VRAM memory-management helpers"); +MODULE_LICENSE("GPL"); diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h new file mode 100644 index 000000000000..5802dd694939 --- /dev/null +++ b/include/drm/drm_gem_vram_helper.h @@ -0,0 +1,92 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#ifndef DRM_GEM_VRAM_HELPER_H +#define DRM_GEM_VRAM_HELPER_H + +#include +#include +#include +#include /* for container_of() */ + +struct filp; + +#define DRM_GEM_VRAM_PL_FLAG_VRAM TTM_PL_FLAG_VRAM +#define DRM_GEM_VRAM_PL_FLAG_SYSTEM TTM_PL_FLAG_SYSTEM + +/* + * Buffer-object helpers + */ + +/** + * struct drm_gem_vram_object - GEM object backed by VRAM + * @gem: GEM object + * @bo: TTM buffer object + * @kmap: Mapping information for @bo + * @placement: TTM placement information. Supported placements are \ + %TTM_PL_VRAM and %TTM_PL_SYSTEM + * @placements: TTM placement information. + * @pin_count: Pin counter + * + * The type struct drm_gem_vram_object represents a GEM object that is + * backed by VRAM. It can be used for simple framebuffer devices with + * dedicated memory. The buffer object can be evicted to system memory if + * video memory becomes scarce. + */ +struct drm_gem_vram_object { + struct drm_gem_object gem; + struct ttm_buffer_object bo; + struct ttm_bo_kmap_obj kmap; + + /* Supported placements are %TTM_PL_VRAM and %TTM_PL_SYSTEM */ + struct ttm_placement placement; + struct ttm_place placements[2]; + + int pin_count; +}; + +/** + * Returns the container of type &struct drm_gem_vram_object + * for field bo. + * @bo: the VRAM buffer object + * Returns: The containing GEM VRAM object + */ +static inline struct drm_gem_vram_object *drm_gem_vram_of_bo( + struct ttm_buffer_object *bo) +{ + return container_of(bo, struct drm_gem_vram_object, bo); +} + +/** + * Returns the container of type &struct drm_gem_vram_object + * for field gem. + * @gem: the GEM object + * Returns: The containing GEM VRAM object + */ +static inline struct drm_gem_vram_object *drm_gem_vram_of_gem( + struct drm_gem_object *gem) +{ + return container_of(gem, struct drm_gem_vram_object, gem); +} + +struct drm_gem_vram_object *drm_gem_vram_create(struct drm_device *dev, + struct ttm_bo_device *bdev, + size_t size, + unsigned long pg_align, + bool interruptible); +void drm_gem_vram_put(struct drm_gem_vram_object *gbo); +int drm_gem_vram_reserve(struct drm_gem_vram_object *gbo, bool no_wait); +void drm_gem_vram_unreserve(struct drm_gem_vram_object *gbo); +u64 drm_gem_vram_mmap_offset(struct drm_gem_vram_object *gbo); +s64 drm_gem_vram_offset(struct drm_gem_vram_object *gbo); +int drm_gem_vram_pin(struct drm_gem_vram_object *gbo, unsigned long pl_flag); +int drm_gem_vram_unpin(struct drm_gem_vram_object *gbo); +int drm_gem_vram_push_to_system(struct drm_gem_vram_object *gbo); +void *drm_gem_vram_kmap_at(struct drm_gem_vram_object *gbo, bool map, + bool *is_iomem, struct ttm_bo_kmap_obj *kmap); +void *drm_gem_vram_kmap(struct drm_gem_vram_object *gbo, bool map, + bool *is_iomem); +void drm_gem_vram_kunmap_at(struct drm_gem_vram_object *gbo, + struct ttm_bo_kmap_obj *kmap); +void drm_gem_vram_kunmap(struct drm_gem_vram_object *gbo); + +#endif -- cgit v1.3-14-g43fede From 96352eca5c7c36c3e0eb97a6d68fb170ce643ea5 Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Wed, 8 May 2019 10:26:16 +0200 Subject: drm: Add VRAM MM, a simple memory manager for dedicated VRAM The VRAM MM memory manager is a helper library that manages dedicated video memory of simple framebuffer devices. It is supported to be used with struct drm_gem_vram_object, but does not depend on it. The implementation is based on the respective code from ast, bochs, and mgag200. These drivers share the exact same implementation except for type names. The helpers are currently build with TTM. This may change in future revisions. v4: * cleanups from checkpatch.pl v2: * renamed to struct drm_vram_mm * add drm_vram_mm_mmap() helper * documentation fixes Signed-off-by: Thomas Zimmermann Link: http://patchwork.freedesktop.org/patch/msgid/20190508082630.15116-7-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann --- Documentation/gpu/drm-mm.rst | 13 ++- drivers/gpu/drm/Makefile | 3 +- drivers/gpu/drm/drm_vram_mm_helper.c | 210 +++++++++++++++++++++++++++++++++++ include/drm/drm_vram_mm_helper.h | 69 ++++++++++++ 4 files changed, 293 insertions(+), 2 deletions(-) create mode 100644 drivers/gpu/drm/drm_vram_mm_helper.c create mode 100644 include/drm/drm_vram_mm_helper.h (limited to 'Documentation') diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst index a3b685089512..eba50afbda42 100644 --- a/Documentation/gpu/drm-mm.rst +++ b/Documentation/gpu/drm-mm.rst @@ -79,7 +79,6 @@ count for the TTM, which will call your initialization function. See the radeon_ttm.c file for an example of usage. - The Graphics Execution Manager (GEM) ==================================== @@ -395,6 +394,18 @@ GEM VRAM Helper Functions Reference .. kernel-doc:: drivers/gpu/drm/drm_gem_vram_helper.c :export: +VRAM MM Helper Functions Reference +---------------------------------- + +.. kernel-doc:: drivers/gpu/drm/drm_vram_mm_helper.c + :doc: overview + +.. kernel-doc:: include/drm/drm_vram_mm_helper.h + :internal: + +.. kernel-doc:: drivers/gpu/drm/drm_vram_mm_helper.c + :export: + VMA Offset Manager ================== diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index ed49b2480766..4c3dc4268b65 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -33,7 +33,8 @@ drm-$(CONFIG_DEBUG_FS) += drm_debugfs.o drm_debugfs_crc.o drm-$(CONFIG_DRM_LOAD_EDID_FIRMWARE) += drm_edid_load.o drm_vram_helper-y := drm_gem_vram_helper.o \ - drm_vram_helper_common.o + drm_vram_helper_common.o \ + drm_vram_mm_helper.o obj-$(CONFIG_DRM_VRAM_HELPER) += drm_vram_helper.o drm_kms_helper-y := drm_crtc_helper.o drm_dp_helper.o drm_dsc.o drm_probe_helper.o \ diff --git a/drivers/gpu/drm/drm_vram_mm_helper.c b/drivers/gpu/drm/drm_vram_mm_helper.c new file mode 100644 index 000000000000..d17c5169b018 --- /dev/null +++ b/drivers/gpu/drm/drm_vram_mm_helper.c @@ -0,0 +1,210 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include +#include +#include + +/** + * DOC: overview + * + * The data structure &struct drm_vram_mm and its helpers implement a memory + * manager for simple framebuffer devices with dedicated video memory. Buffer + * objects are either placed in video RAM or evicted to system memory. These + * helper functions work well with &struct drm_gem_vram_object. + */ + +/* + * TTM TT + */ + +static void backend_func_destroy(struct ttm_tt *tt) +{ + ttm_tt_fini(tt); + kfree(tt); +} + +static struct ttm_backend_func backend_func = { + .destroy = backend_func_destroy +}; + +/* + * TTM BO device + */ + +static struct ttm_tt *bo_driver_ttm_tt_create(struct ttm_buffer_object *bo, + uint32_t page_flags) +{ + struct ttm_tt *tt; + int ret; + + tt = kzalloc(sizeof(*tt), GFP_KERNEL); + if (!tt) + return NULL; + + tt->func = &backend_func; + + ret = ttm_tt_init(tt, bo, page_flags); + if (ret < 0) + goto err_ttm_tt_init; + + return tt; + +err_ttm_tt_init: + kfree(tt); + return NULL; +} + +static int bo_driver_init_mem_type(struct ttm_bo_device *bdev, uint32_t type, + struct ttm_mem_type_manager *man) +{ + switch (type) { + case TTM_PL_SYSTEM: + man->flags = TTM_MEMTYPE_FLAG_MAPPABLE; + man->available_caching = TTM_PL_MASK_CACHING; + man->default_caching = TTM_PL_FLAG_CACHED; + break; + case TTM_PL_VRAM: + man->func = &ttm_bo_manager_func; + man->flags = TTM_MEMTYPE_FLAG_FIXED | + TTM_MEMTYPE_FLAG_MAPPABLE; + man->available_caching = TTM_PL_FLAG_UNCACHED | + TTM_PL_FLAG_WC; + man->default_caching = TTM_PL_FLAG_WC; + break; + default: + return -EINVAL; + } + return 0; +} + +static void bo_driver_evict_flags(struct ttm_buffer_object *bo, + struct ttm_placement *placement) +{ + struct drm_vram_mm *vmm = drm_vram_mm_of_bdev(bo->bdev); + + if (vmm->funcs && vmm->funcs->evict_flags) + vmm->funcs->evict_flags(bo, placement); +} + +static int bo_driver_verify_access(struct ttm_buffer_object *bo, + struct file *filp) +{ + struct drm_vram_mm *vmm = drm_vram_mm_of_bdev(bo->bdev); + + if (!vmm->funcs || !vmm->funcs->verify_access) + return 0; + return vmm->funcs->verify_access(bo, filp); +} + +static int bo_driver_io_mem_reserve(struct ttm_bo_device *bdev, + struct ttm_mem_reg *mem) +{ + struct ttm_mem_type_manager *man = bdev->man + mem->mem_type; + struct drm_vram_mm *vmm = drm_vram_mm_of_bdev(bdev); + + if (!(man->flags & TTM_MEMTYPE_FLAG_MAPPABLE)) + return -EINVAL; + + mem->bus.addr = NULL; + mem->bus.size = mem->num_pages << PAGE_SHIFT; + + switch (mem->mem_type) { + case TTM_PL_SYSTEM: /* nothing to do */ + mem->bus.offset = 0; + mem->bus.base = 0; + mem->bus.is_iomem = false; + break; + case TTM_PL_VRAM: + mem->bus.offset = mem->start << PAGE_SHIFT; + mem->bus.base = vmm->vram_base; + mem->bus.is_iomem = true; + break; + default: + return -EINVAL; + } + + return 0; +} + +static void bo_driver_io_mem_free(struct ttm_bo_device *bdev, + struct ttm_mem_reg *mem) +{ } + +static struct ttm_bo_driver bo_driver = { + .ttm_tt_create = bo_driver_ttm_tt_create, + .ttm_tt_populate = ttm_pool_populate, + .ttm_tt_unpopulate = ttm_pool_unpopulate, + .init_mem_type = bo_driver_init_mem_type, + .eviction_valuable = ttm_bo_eviction_valuable, + .evict_flags = bo_driver_evict_flags, + .verify_access = bo_driver_verify_access, + .io_mem_reserve = bo_driver_io_mem_reserve, + .io_mem_free = bo_driver_io_mem_free, +}; + +/* + * struct drm_vram_mm + */ + +/** + * drm_vram_mm_init() - Initialize an instance of VRAM MM. + * @vmm: the VRAM MM instance to initialize + * @dev: the DRM device + * @vram_base: the base address of the video memory + * @vram_size: the size of the video memory in bytes + * @funcs: callback functions for buffer objects + * + * Returns: + * 0 on success, or + * a negative error code otherwise. + */ +int drm_vram_mm_init(struct drm_vram_mm *vmm, struct drm_device *dev, + uint64_t vram_base, size_t vram_size, + const struct drm_vram_mm_funcs *funcs) +{ + int ret; + + vmm->vram_base = vram_base; + vmm->vram_size = vram_size; + vmm->funcs = funcs; + + ret = ttm_bo_device_init(&vmm->bdev, &bo_driver, + dev->anon_inode->i_mapping, + true); + if (ret) + return ret; + + ret = ttm_bo_init_mm(&vmm->bdev, TTM_PL_VRAM, vram_size >> PAGE_SHIFT); + if (ret) + return ret; + + return 0; +} +EXPORT_SYMBOL(drm_vram_mm_init); + +/** + * drm_vram_mm_cleanup() - Cleans up an initialized instance of VRAM MM. + * @vmm: the VRAM MM instance to clean up + */ +void drm_vram_mm_cleanup(struct drm_vram_mm *vmm) +{ + ttm_bo_device_release(&vmm->bdev); +} +EXPORT_SYMBOL(drm_vram_mm_cleanup); + +/** + * drm_vram_mm_mmap() - Helper for implementing &struct file_operations.mmap() + * @filp: the mapping's file structure + * @vma: the mapping's memory area + * @vmm: the VRAM MM instance + * + * Returns: + * 0 on success, or + * a negative error code otherwise. + */ +int drm_vram_mm_mmap(struct file *filp, struct vm_area_struct *vma, + struct drm_vram_mm *vmm) +{ + return ttm_bo_mmap(filp, vma, &vmm->bdev); +} +EXPORT_SYMBOL(drm_vram_mm_mmap); diff --git a/include/drm/drm_vram_mm_helper.h b/include/drm/drm_vram_mm_helper.h new file mode 100644 index 000000000000..5d45c6447fa4 --- /dev/null +++ b/include/drm/drm_vram_mm_helper.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#ifndef DRM_VRAM_MM_HELPER_H +#define DRM_VRAM_MM_HELPER_H + +#include + +struct drm_device; + +/** + * struct drm_vram_mm_funcs - Callback functions for &struct drm_vram_mm + * @evict_flags: Provides an implementation for struct \ + &ttm_bo_driver.evict_flags + * @verify_access: Provides an implementation for \ + struct &ttm_bo_driver.verify_access + * + * These callback function integrate VRAM MM with TTM buffer objects. New + * functions can be added if necessary. + */ +struct drm_vram_mm_funcs { + void (*evict_flags)(struct ttm_buffer_object *bo, + struct ttm_placement *placement); + int (*verify_access)(struct ttm_buffer_object *bo, struct file *filp); +}; + +/** + * struct drm_vram_mm - An instance of VRAM MM + * @vram_base: Base address of the managed video memory + * @vram_size: Size of the managed video memory in bytes + * @bdev: The TTM BO device. + * @funcs: TTM BO functions + * + * The fields &struct drm_vram_mm.vram_base and + * &struct drm_vram_mm.vrm_size are managed by VRAM MM, but are + * available for public read access. Use the field + * &struct drm_vram_mm.bdev to access the TTM BO device. + */ +struct drm_vram_mm { + uint64_t vram_base; + size_t vram_size; + + struct ttm_bo_device bdev; + + const struct drm_vram_mm_funcs *funcs; +}; + +/** + * drm_vram_mm_of_bdev() - \ + Returns the container of type &struct ttm_bo_device for field bdev. + * @bdev: the TTM BO device + * + * Returns: + * The containing instance of &struct drm_vram_mm + */ +static inline struct drm_vram_mm *drm_vram_mm_of_bdev( + struct ttm_bo_device *bdev) +{ + return container_of(bdev, struct drm_vram_mm, bdev); +} + +int drm_vram_mm_init(struct drm_vram_mm *vmm, struct drm_device *dev, + uint64_t vram_base, size_t vram_size, + const struct drm_vram_mm_funcs *funcs); +void drm_vram_mm_cleanup(struct drm_vram_mm *vmm); + +int drm_vram_mm_mmap(struct file *filp, struct vm_area_struct *vma, + struct drm_vram_mm *vmm); + +#endif -- cgit v1.3-14-g43fede From 59f5989ad42b6edd089b47895986ef15259822dc Mon Sep 17 00:00:00 2001 From: Thomas Zimmermann Date: Wed, 8 May 2019 10:26:18 +0200 Subject: drm: Integrate VRAM MM into struct drm_device There's now a pointer to struct drm_vram_mm stored in struct drm_device. DRM drivers that use VRAM MM should use this field to refer to their instance of the data structure. Appropriate helpers are now provided as well. Adding struct drm_vram_mm to struct drm_device further avoids wrappers and boilerplate code in drivers. This patch implements default functions for callbacks in struct drm_driver and struct file_operations that use the struct drm_vram_mm stored in struct drm_device. Drivers that need to provide their own implementations can still do so. The patch also adds documentation for the VRAM helper library in general. v5: * set .llseek to no_llseek() from DRM_VRAM_MM_FILE_OPERATIONS v4: * cleanups from checkpatch.pl * document VRAM helper library Signed-off-by: Thomas Zimmermann Link: http://patchwork.freedesktop.org/patch/msgid/20190508082630.15116-9-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann --- Documentation/gpu/drm-mm.rst | 6 +++ drivers/gpu/drm/drm_gem_vram_helper.c | 28 ++++++++++ drivers/gpu/drm/drm_vram_helper_common.c | 92 ++++++++++++++++++++++++++++++++ drivers/gpu/drm/drm_vram_mm_helper.c | 85 +++++++++++++++++++++++++++++ include/drm/drm_device.h | 4 ++ include/drm/drm_gem_vram_helper.h | 19 ++++++- include/drm/drm_vram_mm_helper.h | 33 ++++++++++++ 7 files changed, 266 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst index eba50afbda42..c8ebd4f66a6a 100644 --- a/Documentation/gpu/drm-mm.rst +++ b/Documentation/gpu/drm-mm.rst @@ -382,6 +382,12 @@ GEM CMA Helper Functions Reference VRAM Helper Function Reference ============================== +.. kernel-doc:: drivers/gpu/drm/drm_vram_helper_common.c + :doc: overview + +.. kernel-doc:: include/drm/drm_gem_vram_helper.h + :internal: + GEM VRAM Helper Functions Reference ----------------------------------- diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c index c21b1f920e0a..8f142b810eb4 100644 --- a/drivers/gpu/drm/drm_gem_vram_helper.c +++ b/drivers/gpu/drm/drm_gem_vram_helper.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-or-later #include +#include #include #include #include @@ -555,6 +556,33 @@ void drm_gem_vram_driver_gem_free_object_unlocked(struct drm_gem_object *gem) } EXPORT_SYMBOL(drm_gem_vram_driver_gem_free_object_unlocked); +/** + * drm_gem_vram_driver_create_dumb() - \ + Implements &struct drm_driver.dumb_create + * @file: the DRM file + * @dev: the DRM device + * @args: the arguments as provided to \ + &struct drm_driver.dumb_create + * + * This function requires the driver to use @drm_device.vram_mm for its + * instance of VRAM MM. + * + * Returns: + * 0 on success, or + * a negative error code otherwise. + */ +int drm_gem_vram_driver_dumb_create(struct drm_file *file, + struct drm_device *dev, + struct drm_mode_create_dumb *args) +{ + if (WARN_ONCE(!dev->vram_mm, "VRAM MM not initialized")) + return -EINVAL; + + return drm_gem_vram_fill_create_dumb(file, dev, &dev->vram_mm->bdev, 0, + false, args); +} +EXPORT_SYMBOL(drm_gem_vram_driver_dumb_create); + /** * drm_gem_vram_driver_dumb_mmap_offset() - \ Implements &struct drm_driver.dumb_mmap_offset diff --git a/drivers/gpu/drm/drm_vram_helper_common.c b/drivers/gpu/drm/drm_vram_helper_common.c index 7c25daca18d0..3b47f7002115 100644 --- a/drivers/gpu/drm/drm_vram_helper_common.c +++ b/drivers/gpu/drm/drm_vram_helper_common.c @@ -2,5 +2,97 @@ #include +/** + * DOC: overview + * + * This library provides &struct drm_gem_vram_object (GEM VRAM), a GEM + * buffer object that is backed by video RAM. It can be used for + * framebuffer devices with dedicated memory. The video RAM can be + * managed with &struct drm_vram_mm (VRAM MM). Both data structures are + * supposed to be used together, but can also be used individually. + * + * With the GEM interface userspace applications create, manage and destroy + * graphics buffers, such as an on-screen framebuffer. GEM does not provide + * an implementation of these interfaces. It's up to the DRM driver to + * provide an implementation that suits the hardware. If the hardware device + * contains dedicated video memory, the DRM driver can use the VRAM helper + * library. Each active buffer object is stored in video RAM. Active + * buffer are used for drawing the current frame, typically something like + * the frame's scanout buffer or the cursor image. If there's no more space + * left in VRAM, inactive GEM objects can be moved to system memory. + * + * The easiest way to use the VRAM helper library is to call + * drm_vram_helper_alloc_mm(). The function allocates and initializes an + * instance of &struct drm_vram_mm in &struct drm_device.vram_mm . Use + * &DRM_GEM_VRAM_DRIVER to initialize &struct drm_driver and + * &DRM_VRAM_MM_FILE_OPERATIONS to initialize &struct file_operations; + * as illustrated below. + * + * .. code-block:: c + * + * struct file_operations fops ={ + * .owner = THIS_MODULE, + * DRM_VRAM_MM_FILE_OPERATION + * }; + * struct drm_driver drv = { + * .driver_feature = DRM_ ... , + * .fops = &fops, + * DRM_GEM_VRAM_DRIVER + * }; + * + * int init_drm_driver() + * { + * struct drm_device *dev; + * uint64_t vram_base; + * unsigned long vram_size; + * int ret; + * + * // setup device, vram base and size + * // ... + * + * ret = drm_vram_helper_alloc_mm(dev, vram_base, vram_size, + * &drm_gem_vram_mm_funcs); + * if (ret) + * return ret; + * return 0; + * } + * + * This creates an instance of &struct drm_vram_mm, exports DRM userspace + * interfaces for GEM buffer management and initializes file operations to + * allow for accessing created GEM buffers. With this setup, the DRM driver + * manages an area of video RAM with VRAM MM and provides GEM VRAM objects + * to userspace. + * + * To clean up the VRAM memory management, call drm_vram_helper_release_mm() + * in the driver's clean-up code. + * + * .. code-block:: c + * + * void fini_drm_driver() + * { + * struct drm_device *dev = ...; + * + * drm_vram_helper_release_mm(dev); + * } + * + * For drawing or scanout operations, buffer object have to be pinned in video + * RAM. Call drm_gem_vram_pin() with &DRM_GEM_VRAM_PL_FLAG_VRAM or + * &DRM_GEM_VRAM_PL_FLAG_SYSTEM to pin a buffer object in video RAM or system + * memory. Call drm_gem_vram_unpin() to release the pinned object afterwards. + * If you have to evict a buffer object from video RAM (e.g., for freeing up + * memory), unpin the buffer and call drm_gem_vram_push_to_system(). + * + * A buffer object that is pinned in video RAM has a fixed address within that + * memory region. Call drm_gem_vram_offset() to retrieve this value. Typically + * it's used to program the hardware's scanout engine for framebuffers, set + * the cursor overlay's image for a mouse cursor, or use it as input to the + * hardware's draing engine. + * + * To access a buffer object's memory from the DRM driver, call + * drm_gem_vram_kmap(). It (optionally) maps the buffer into kernel address + * space and returns the memory address. Use drm_gem_vram_kunmap() to + * release the mapping. + */ + MODULE_DESCRIPTION("DRM VRAM memory-management helpers"); MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/drm_vram_mm_helper.c b/drivers/gpu/drm/drm_vram_mm_helper.c index d17c5169b018..c94a6dc5ade7 100644 --- a/drivers/gpu/drm/drm_vram_mm_helper.c +++ b/drivers/gpu/drm/drm_vram_mm_helper.c @@ -208,3 +208,88 @@ int drm_vram_mm_mmap(struct file *filp, struct vm_area_struct *vma, return ttm_bo_mmap(filp, vma, &vmm->bdev); } EXPORT_SYMBOL(drm_vram_mm_mmap); + +/* + * Helpers for integration with struct drm_device + */ + +/** + * drm_vram_helper_alloc_mm - Allocates a device's instance of \ + &struct drm_vram_mm + * @dev: the DRM device + * @vram_base: the base address of the video memory + * @vram_size: the size of the video memory in bytes + * @funcs: callback functions for buffer objects + * + * Returns: + * The new instance of &struct drm_vram_mm on success, or + * an ERR_PTR()-encoded errno code otherwise. + */ +struct drm_vram_mm *drm_vram_helper_alloc_mm( + struct drm_device *dev, uint64_t vram_base, size_t vram_size, + const struct drm_vram_mm_funcs *funcs) +{ + int ret; + + if (WARN_ON(dev->vram_mm)) + return dev->vram_mm; + + dev->vram_mm = kzalloc(sizeof(*dev->vram_mm), GFP_KERNEL); + if (!dev->vram_mm) + return ERR_PTR(-ENOMEM); + + ret = drm_vram_mm_init(dev->vram_mm, dev, vram_base, vram_size, funcs); + if (ret) + goto err_kfree; + + return dev->vram_mm; + +err_kfree: + kfree(dev->vram_mm); + dev->vram_mm = NULL; + return ERR_PTR(ret); +} +EXPORT_SYMBOL(drm_vram_helper_alloc_mm); + +/** + * drm_vram_helper_release_mm - Releases a device's instance of \ + &struct drm_vram_mm + * @dev: the DRM device + */ +void drm_vram_helper_release_mm(struct drm_device *dev) +{ + if (!dev->vram_mm) + return; + + drm_vram_mm_cleanup(dev->vram_mm); + kfree(dev->vram_mm); + dev->vram_mm = NULL; +} +EXPORT_SYMBOL(drm_vram_helper_release_mm); + +/* + * Helpers for &struct file_operations + */ + +/** + * drm_vram_mm_file_operations_mmap() - \ + Implements &struct file_operations.mmap() + * @filp: the mapping's file structure + * @vma: the mapping's memory area + * + * Returns: + * 0 on success, or + * a negative error code otherwise. + */ +int drm_vram_mm_file_operations_mmap( + struct file *filp, struct vm_area_struct *vma) +{ + struct drm_file *file_priv = filp->private_data; + struct drm_device *dev = file_priv->minor->dev; + + if (WARN_ONCE(!dev->vram_mm, "VRAM MM not initialized")) + return -EINVAL; + + return drm_vram_mm_mmap(filp, vma, dev->vram_mm); +} +EXPORT_SYMBOL(drm_vram_mm_file_operations_mmap); diff --git a/include/drm/drm_device.h b/include/drm/drm_device.h index 7f9ef709b2b6..1acfc3bbd3fb 100644 --- a/include/drm/drm_device.h +++ b/include/drm/drm_device.h @@ -17,6 +17,7 @@ struct drm_vblank_crtc; struct drm_sg_mem; struct drm_local_map; struct drm_vma_offset_manager; +struct drm_vram_mm; struct drm_fb_helper; struct inode; @@ -286,6 +287,9 @@ struct drm_device { /** @vma_offset_manager: GEM information */ struct drm_vma_offset_manager *vma_offset_manager; + /** @vram_mm: VRAM MM memory manager */ + struct drm_vram_mm *vram_mm; + /** * @switch_power_state: * diff --git a/include/drm/drm_gem_vram_helper.h b/include/drm/drm_gem_vram_helper.h index 7971656afe87..b056f189ba62 100644 --- a/include/drm/drm_gem_vram_helper.h +++ b/include/drm/drm_gem_vram_helper.h @@ -11,6 +11,7 @@ struct drm_mode_create_dumb; struct drm_vram_mm_funcs; struct filp; +struct vm_area_struct; #define DRM_GEM_VRAM_PL_FLAG_VRAM TTM_PL_FLAG_VRAM #define DRM_GEM_VRAM_PL_FLAG_SYSTEM TTM_PL_FLAG_SYSTEM @@ -115,10 +116,26 @@ extern const struct drm_vram_mm_funcs drm_gem_vram_mm_funcs; */ void drm_gem_vram_driver_gem_free_object_unlocked(struct drm_gem_object *gem); - +int drm_gem_vram_driver_dumb_create(struct drm_file *file, + struct drm_device *dev, + struct drm_mode_create_dumb *args); int drm_gem_vram_driver_dumb_mmap_offset(struct drm_file *file, struct drm_device *dev, uint32_t handle, uint64_t *offset); + +/** + * define DRM_GEM_VRAM_DRIVER - default callback functions for \ + &struct drm_driver + * + * Drivers that use VRAM MM and GEM VRAM can use this macro to initialize + * &struct drm_driver with default functions. + */ +#define DRM_GEM_VRAM_DRIVER \ + .gem_free_object_unlocked = \ + drm_gem_vram_driver_gem_free_object_unlocked, \ + .dumb_create = drm_gem_vram_driver_dumb_create, \ + .dumb_map_offset = drm_gem_vram_driver_dumb_mmap_offset + /* * PRIME helpers for struct drm_driver */ diff --git a/include/drm/drm_vram_mm_helper.h b/include/drm/drm_vram_mm_helper.h index 5d45c6447fa4..a8ffd8599b08 100644 --- a/include/drm/drm_vram_mm_helper.h +++ b/include/drm/drm_vram_mm_helper.h @@ -66,4 +66,37 @@ void drm_vram_mm_cleanup(struct drm_vram_mm *vmm); int drm_vram_mm_mmap(struct file *filp, struct vm_area_struct *vma, struct drm_vram_mm *vmm); +/* + * Helpers for integration with struct drm_device + */ + +struct drm_vram_mm *drm_vram_helper_alloc_mm( + struct drm_device *dev, uint64_t vram_base, size_t vram_size, + const struct drm_vram_mm_funcs *funcs); +void drm_vram_helper_release_mm(struct drm_device *dev); + +/* + * Helpers for &struct file_operations + */ + +int drm_vram_mm_file_operations_mmap( + struct file *filp, struct vm_area_struct *vma); + +/** + * define DRM_VRAM_MM_FILE_OPERATIONS - default callback functions for \ + &struct file_operations + * + * Drivers that use VRAM MM can use this macro to initialize + * &struct file_operations with default functions. + */ +#define DRM_VRAM_MM_FILE_OPERATIONS \ + .llseek = no_llseek, \ + .read = drm_read, \ + .poll = drm_poll, \ + .unlocked_ioctl = drm_ioctl, \ + .compat_ioctl = drm_compat_ioctl, \ + .mmap = drm_vram_mm_file_operations_mmap, \ + .open = drm_open, \ + .release = drm_release \ + #endif -- cgit v1.3-14-g43fede From 3d42fca00891774c50585c1b2f83357a0904c8bc Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Wed, 24 Apr 2019 15:06:38 -0700 Subject: drm/doc: Allow new UAPI to be used once it's in drm-next/drm-misc-next. I was trying to figure out if it was permissible to merge the Mesa side of V3D's CSD support yet while it's in drm-misc-next but not drm-next, and developers on #dri-devel IRC had differing opinions of what the requirement was. v2: Restrict to just drm-next or drm-misc-next on airlied's request. Signed-off-by: Eric Anholt Link: https://patchwork.freedesktop.org/patch/msgid/20190424220638.16222-1-eric@anholt.net Reviewed-by: Daniel Vetter --- Documentation/gpu/drm-uapi.rst | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'Documentation') diff --git a/Documentation/gpu/drm-uapi.rst b/Documentation/gpu/drm-uapi.rst index c9fd23efd957..b7a96dc02d21 100644 --- a/Documentation/gpu/drm-uapi.rst +++ b/Documentation/gpu/drm-uapi.rst @@ -92,9 +92,9 @@ leads to a few additional requirements: requirements by doing a quick fork. - The kernel patch can only be merged after all the above requirements are met, - but it **must** be merged **before** the userspace patches land. uAPI always flows - from the kernel, doing things the other way round risks divergence of the uAPI - definitions and header files. + but it **must** be merged to either drm-next or drm-misc-next **before** the + userspace patches land. uAPI always flows from the kernel, doing things the + other way round risks divergence of the uAPI definitions and header files. These are fairly steep requirements, but have grown out from years of shared pain and experience with uAPI added hastily, and almost always regretted about -- cgit v1.3-14-g43fede From ba6e798ecf320716780bb6a6088a8d17dcba1d49 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Wed, 24 Apr 2019 11:56:17 -0700 Subject: drm/doc: Document expectation that userspace review looks at kernel uAPI. The point of this review process is that userspace using the new uAPI can actually live with the uAPI being provided, and it's hard to know that without having actually looked into a kernel patch yourself. Signed-off-by: Eric Anholt Suggested-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190424185617.16865-2-eric@anholt.net Reviewed-by: Daniel Vetter --- Documentation/gpu/drm-uapi.rst | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/gpu/drm-uapi.rst b/Documentation/gpu/drm-uapi.rst index b7a96dc02d21..05874d09820c 100644 --- a/Documentation/gpu/drm-uapi.rst +++ b/Documentation/gpu/drm-uapi.rst @@ -85,7 +85,9 @@ leads to a few additional requirements: - The userspace side must be fully reviewed and tested to the standards of that userspace project. For e.g. mesa this means piglit testcases and review on the mailing list. This is again to ensure that the new interface actually gets the - job done. + job done. The userspace-side reviewer should also provide at least an + Acked-by on the kernel uAPI patch indicating that they've looked at how the + kernel side is implementing the new feature being used. - The userspace patches must be against the canonical upstream, not some vendor fork. This is to make sure that no one cheats on the review and testing -- cgit v1.3-14-g43fede From 79c5ecafe95f9fae41693bb0b89a4c3be7851a6d Mon Sep 17 00:00:00 2001 From: Yannick Fertré Date: Tue, 14 May 2019 11:35:55 +0200 Subject: dt-bindings: display: stm32: add supply property to DSI controller MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch adds documentation of a new property phy-dsi-supply to the STM32 DSI controller. Signed-off-by: Yannick Fertré Reviewed-by: Rob Herring Reviewed-by: Philippe Cornu Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/1557826556-10079-2-git-send-email-yannick.fertre@st.com --- Documentation/devicetree/bindings/display/st,stm32-ltdc.txt | 3 +++ 1 file changed, 3 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt b/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt index 3eb1b48b47dd..60c54da4e526 100644 --- a/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt +++ b/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt @@ -40,6 +40,8 @@ Mandatory nodes specific to STM32 DSI: - panel or bridge node: A node containing the panel or bridge description as documented in [6]. - port: panel or bridge port node, connected to the DSI output port (port@1). +Optional properties: +- phy-dsi-supply: phandle of the regulator that provides the supply voltage. Note: You can find more documentation in the following references [1] Documentation/devicetree/bindings/clock/clock-bindings.txt @@ -101,6 +103,7 @@ Example 2: DSI panel clock-names = "pclk", "ref"; resets = <&rcc STM32F4_APB2_RESET(DSI)>; reset-names = "apb"; + phy-dsi-supply = <®18>; ports { #address-cells = <1>; -- cgit v1.3-14-g43fede From 982c0500fd1a8012c31d3c9dd8de285129904656 Mon Sep 17 00:00:00 2001 From: Matthias Kaehlcke Date: Thu, 16 May 2019 10:25:08 -0700 Subject: dt-bindings: gpu: add #cooling-cells property to the ARM Mali Midgard GPU binding The GPU can be used as a thermal cooling device, add an optional '#cooling-cells' property. Signed-off-by: Matthias Kaehlcke Reviewed-by: Douglas Anderson Signed-off-by: Heiko Stuebner Link: https://patchwork.freedesktop.org/patch/msgid/20190516172510.181473-1-mka@chromium.org --- Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt | 3 +++ 1 file changed, 3 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt index 18a2cde2e5f3..61fd41a20f99 100644 --- a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt +++ b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt @@ -37,6 +37,8 @@ Optional properties: - operating-points-v2 : Refer to Documentation/devicetree/bindings/opp/opp.txt for details. +- #cooling-cells: Refer to Documentation/devicetree/bindings/thermal/thermal.txt + for details. Example for a Mali-T760: @@ -51,6 +53,7 @@ gpu@ffa30000 { mali-supply = <&vdd_gpu>; operating-points-v2 = <&gpu_opp_table>; power-domains = <&power RK3288_PD_GPU>; + #cooling-cells = <2>; }; gpu_opp_table: opp_table0 { -- cgit v1.3-14-g43fede From d4db6c089099d38166752c93d9d165fb7526f1e5 Mon Sep 17 00:00:00 2001 From: Icenowy Zheng Date: Tue, 21 May 2019 18:10:59 +0200 Subject: dt-bindings: gpu: add bus clock for Mali Midgard GPUs MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Some SoCs adds a bus clock gate to the Mali Midgard GPU. Add the binding for the bus clock. Signed-off-by: Icenowy Zheng Signed-off-by: Clément Péron Reviewed-by: Rob Herring Signed-off-by: Rob Herring Link: https://patchwork.freedesktop.org/patch/msgid/20190521161102.29620-4-peron.clem@gmail.com --- Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt index 61fd41a20f99..abaca05b6267 100644 --- a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt +++ b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt @@ -31,6 +31,12 @@ Optional properties: - clocks : Phandle to clock for the Mali Midgard device. +- clock-names : Specify the names of the clocks specified in clocks + when multiple clocks are present. + * core: clock driving the GPU itself (When only one clock is present, + assume it's this clock.) + * bus: bus clock for the GPU + - mali-supply : Phandle to regulator for the Mali device. Refer to Documentation/devicetree/bindings/regulator/regulator.txt for details. -- cgit v1.3-14-g43fede From 3b1d715dc2edda1efa590fdf7cf9731501d4a44f Mon Sep 17 00:00:00 2001 From: Clément Péron Date: Tue, 21 May 2019 18:11:00 +0200 Subject: dt-bindings: gpu: mali-midgard: Add H6 mali gpu compatible MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This add the H6 mali compatible in the dt-bindings to later support specific implementation. Signed-off-by: Clément Péron Reviewed-by: Rob Herring Signed-off-by: Rob Herring Link: https://patchwork.freedesktop.org/patch/msgid/20190521161102.29620-5-peron.clem@gmail.com --- Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt index 2658b8ec1d83..e5ad3b2afe17 100644 --- a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt +++ b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt @@ -15,6 +15,7 @@ Required properties: + "arm,mali-t860" + "arm,mali-t880" * which must be preceded by one of the following vendor specifics: + + "allwinner,sun50i-h6-mali" + "amlogic,meson-gxm-mali" + "rockchip,rk3288-mali" + "rockchip,rk3399-mali" @@ -52,9 +53,15 @@ Vendor-specific bindings ------------------------ The Mali GPU is integrated very differently from one SoC to -another. In order to accomodate those differences, you have the option +another. In order to accommodate those differences, you have the option to specify one more vendor-specific compatible, among: +- "allwinner,sun50i-h6-mali" + Required properties: + - clocks : phandles to core and bus clocks + - clock-names : must contain "core" and "bus" + - resets: phandle to GPU reset line + - "amlogic,meson-gxm-mali" Required properties: - resets : Should contain phandles of : -- cgit v1.3-14-g43fede From 909fa3321d348ef69366aad9e84e1dd9ee0bd060 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Thu, 23 May 2019 13:21:51 +0200 Subject: dt-bindings: fix up for vendor prefixes file conversion Link: Link: http://patchwork.freedesktop.org/patch/msgid/20190521105151.51ffa942@canb.auug.org.au Fixes: 374ed5429346 ("Merge drm/drm-next into drm-misc-next") Signed-off-by: Stephen Rothwell Signed-off-by: Maxime Ripard --- .../devicetree/bindings/vendor-prefixes.txt | 468 --------------------- .../devicetree/bindings/vendor-prefixes.yaml | 6 + 2 files changed, 6 insertions(+), 468 deletions(-) delete mode 100644 Documentation/devicetree/bindings/vendor-prefixes.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt deleted file mode 100644 index 873dbafa6698..000000000000 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ /dev/null @@ -1,468 +0,0 @@ -Device tree binding vendor prefix registry. Keep list in alphabetical order. - -This isn't an exhaustive list, but you should add new prefixes to it before -using them to avoid name-space collisions. - -abilis Abilis Systems -abracon Abracon Corporation -actions Actions Semiconductor Co., Ltd. -active-semi Active-Semi International Inc -ad Avionic Design GmbH -adafruit Adafruit Industries, LLC -adapteva Adapteva, Inc. -adaptrum Adaptrum, Inc. -adh AD Holdings Plc. -adi Analog Devices, Inc. -advantech Advantech Corporation -aeroflexgaisler Aeroflex Gaisler AB -al Annapurna Labs -allo Allo.com -allwinner Allwinner Technology Co., Ltd. -alphascale AlphaScale Integrated Circuits Systems, Inc. -altr Altera Corp. -amarula Amarula Solutions -amazon Amazon.com, Inc. -amcc Applied Micro Circuits Corporation (APM, formally AMCC) -amd Advanced Micro Devices (AMD), Inc. -amediatech Shenzhen Amediatech Technology Co., Ltd -amlogic Amlogic, Inc. -ampire Ampire Co., Ltd. -ams AMS AG -amstaos AMS-Taos Inc. -analogix Analogix Semiconductor, Inc. -andestech Andes Technology Corporation -apm Applied Micro Circuits Corporation (APM) -aptina Aptina Imaging -arasan Arasan Chip Systems -archermind ArcherMind Technology (Nanjing) Co., Ltd. -arctic Arctic Sand -aries Aries Embedded GmbH -arm ARM Ltd. -armadeus ARMadeus Systems SARL -arrow Arrow Electronics -artesyn Artesyn Embedded Technologies Inc. -asahi-kasei Asahi Kasei Corp. -aspeed ASPEED Technology Inc. -asus AsusTek Computer Inc. -atlas Atlas Scientific LLC -atmel Atmel Corporation -auo AU Optronics Corporation -auvidea Auvidea GmbH -avago Avago Technologies -avia avia semiconductor -avic Shanghai AVIC Optoelectronics Co., Ltd. -avnet Avnet, Inc. -axentia Axentia Technologies AB -axis Axis Communications AB -bananapi BIPAI KEJI LIMITED -bhf Beckhoff Automation GmbH & Co. KG -bitmain Bitmain Technologies -boe BOE Technology Group Co., Ltd. -bosch Bosch Sensortec GmbH -boundary Boundary Devices Inc. -brcm Broadcom Corporation -buffalo Buffalo, Inc. -bticino Bticino International -calxeda Calxeda -capella Capella Microsystems, Inc -cascoda Cascoda, Ltd. -catalyst Catalyst Semiconductor, Inc. -cavium Cavium, Inc. -cdns Cadence Design Systems Inc. -cdtech CDTech(H.K.) Electronics Limited -ceva Ceva, Inc. -chipidea Chipidea, Inc -chipone ChipOne -chipspark ChipSPARK -chrp Common Hardware Reference Platform -chunghwa Chunghwa Picture Tubes Ltd. -ciaa Computadora Industrial Abierta Argentina -cirrus Cirrus Logic, Inc. -cloudengines Cloud Engines, Inc. -cnm Chips&Media, Inc. -cnxt Conexant Systems, Inc. -compulab CompuLab Ltd. -cortina Cortina Systems, Inc. -cosmic Cosmic Circuits -crane Crane Connectivity Solutions -creative Creative Technology Ltd -crystalfontz Crystalfontz America, Inc. -csky Hangzhou C-SKY Microsystems Co., Ltd -cubietech Cubietech, Ltd. -cypress Cypress Semiconductor Corporation -cznic CZ.NIC, z.s.p.o. -dallas Maxim Integrated Products (formerly Dallas Semiconductor) -dataimage DataImage, Inc. -davicom DAVICOM Semiconductor, Inc. -delta Delta Electronics, Inc. -denx Denx Software Engineering -devantech Devantech, Ltd. -dh DH electronics GmbH -digi Digi International Inc. -digilent Diglent, Inc. -dioo Dioo Microcircuit Co., Ltd -dlc DLC Display Co., Ltd. -dlg Dialog Semiconductor -dlink D-Link Corporation -dmo Data Modul AG -domintech Domintech Co., Ltd. -dongwoon Dongwoon Anatech -dptechnics DPTechnics -dragino Dragino Technology Co., Limited -ea Embedded Artists AB -ebs-systart EBS-SYSTART GmbH -ebv EBV Elektronik -eckelmann Eckelmann AG -edt Emerging Display Technologies -eeti eGalax_eMPIA Technology Inc -elan Elan Microelectronic Corp. -elgin Elgin S/A. -embest Shenzhen Embest Technology Co., Ltd. -emlid Emlid, Ltd. -emmicro EM Microelectronic -emtrion emtrion GmbH -endless Endless Mobile, Inc. -energymicro Silicon Laboratories (formerly Energy Micro AS) -engicam Engicam S.r.l. -epcos EPCOS AG -epfl Ecole Polytechnique Fédérale de Lausanne -epson Seiko Epson Corp. -est ESTeem Wireless Modems -ettus NI Ettus Research -eukrea Eukréa Electromatique -everest Everest Semiconductor Co. Ltd. -everspin Everspin Technologies, Inc. -evervision Evervision Electronics Co. Ltd. -exar Exar Corporation -excito Excito -ezchip EZchip Semiconductor -facebook Facebook -fairphone Fairphone B.V. -faraday Faraday Technology Corporation -fastrax Fastrax Oy -fcs Fairchild Semiconductor -feiyang Shenzhen Fly Young Technology Co.,LTD. -firefly Firefly -focaltech FocalTech Systems Co.,Ltd -friendlyarm Guangzhou FriendlyARM Computer Tech Co., Ltd -fsl Freescale Semiconductor -fujitsu Fujitsu Ltd. -gateworks Gateworks Corporation -gcw Game Consoles Worldwide -ge General Electric Company -geekbuying GeekBuying -gef GE Fanuc Intelligent Platforms Embedded Systems, Inc. -GEFanuc GE Fanuc Intelligent Platforms Embedded Systems, Inc. -geniatech Geniatech, Inc. -giantec Giantec Semiconductor, Inc. -giantplus Giantplus Technology Co., Ltd. -globalscale Globalscale Technologies, Inc. -globaltop GlobalTop Technology, Inc. -gmt Global Mixed-mode Technology, Inc. -goodix Shenzhen Huiding Technology Co., Ltd. -google Google, Inc. -grinn Grinn -grmn Garmin Limited -gumstix Gumstix, Inc. -gw Gateworks Corporation -hannstar HannStar Display Corporation -haoyu Haoyu Microelectronic Co. Ltd. -hardkernel Hardkernel Co., Ltd -hideep HiDeep Inc. -himax Himax Technologies, Inc. -hisilicon Hisilicon Limited. -hit Hitachi Ltd. -hitex Hitex Development Tools -holt Holt Integrated Circuits, Inc. -honeywell Honeywell -hp Hewlett Packard -holtek Holtek Semiconductor, Inc. -hwacom HwaCom Systems Inc. -i2se I2SE GmbH -ibm International Business Machines (IBM) -icplus IC Plus Corp. -idt Integrated Device Technologies, Inc. -ifi Ingenieurburo Fur Ic-Technologie (I/F/I) -ilitek ILI Technology Corporation (ILITEK) -img Imagination Technologies Ltd. -infineon Infineon Technologies -inforce Inforce Computing -ingenic Ingenic Semiconductor -innolux Innolux Corporation -inside-secure INSIDE Secure -intel Intel Corporation -intercontrol Inter Control Group -invensense InvenSense Inc. -inversepath Inverse Path -iom Iomega Corporation -isee ISEE 2007 S.L. -isil Intersil -issi Integrated Silicon Solutions Inc. -itead ITEAD Intelligent Systems Co.Ltd -iwave iWave Systems Technologies Pvt. Ltd. -jdi Japan Display Inc. -jedec JEDEC Solid State Technology Association -jianda Jiandangjing Technology Co., Ltd. -karo Ka-Ro electronics GmbH -keithkoep Keith & Koep GmbH -keymile Keymile GmbH -khadas Khadas -kiebackpeter Kieback & Peter GmbH -kinetic Kinetic Technologies -kingdisplay King & Display Technology Co., Ltd. -kingnovel Kingnovel Technology Co., Ltd. -koe Kaohsiung Opto-Electronics Inc. -kosagi Sutajio Ko-Usagi PTE Ltd. -kyo Kyocera Corporation -lacie LaCie -laird Laird PLC -lantiq Lantiq Semiconductor -lattice Lattice Semiconductor -lego LEGO Systems A/S -lemaker Shenzhen LeMaker Technology Co., Ltd. -lenovo Lenovo Group Ltd. -lg LG Corporation -libretech Shenzhen Libre Technology Co., Ltd -licheepi Lichee Pi -linaro Linaro Limited -linksys Belkin International, Inc. (Linksys) -linux Linux-specific binding -linx Linx Technologies -lltc Linear Technology Corporation -logicpd Logic PD, Inc. -lsi LSI Corp. (LSI Logic) -lwn Liebherr-Werk Nenzing GmbH -macnica Macnica Americas -marvell Marvell Technology Group Ltd. -maxim Maxim Integrated Products -mbvl Mobiveil Inc. -mcube mCube -meas Measurement Specialties -mediatek MediaTek Inc. -megachips MegaChips -mele Shenzhen MeLE Digital Technology Ltd. -melexis Melexis N.V. -melfas MELFAS Inc. -mellanox Mellanox Technologies -memsic MEMSIC Inc. -merrii Merrii Technology Co., Ltd. -micrel Micrel Inc. -microchip Microchip Technology Inc. -microcrystal Micro Crystal AG -micron Micron Technology Inc. -mikroe MikroElektronika d.o.o. -minix MINIX Technology Ltd. -miramems MiraMEMS Sensing Technology Co., Ltd. -mitsubishi Mitsubishi Electric Corporation -mosaixtech Mosaix Technologies, Inc. -motorola Motorola, Inc. -moxa Moxa Inc. -mpl MPL AG -mqmaker mqmaker Inc. -mscc Microsemi Corporation -msi Micro-Star International Co. Ltd. -mti Imagination Technologies Ltd. (formerly MIPS Technologies Inc.) -multi-inno Multi-Inno Technology Co.,Ltd -mundoreader Mundo Reader S.L. -murata Murata Manufacturing Co., Ltd. -mxicy Macronix International Co., Ltd. -myir MYIR Tech Limited -national National Semiconductor -nec NEC LCD Technologies, Ltd. -neonode Neonode Inc. -netgear NETGEAR -netlogic Broadcom Corporation (formerly NetLogic Microsystems) -netron-dy Netron DY -netxeon Shenzhen Netxeon Technology CO., LTD -nexbox Nexbox -nextthing Next Thing Co. -newhaven Newhaven Display International -ni National Instruments -nintendo Nintendo -nlt NLT Technologies, Ltd. -nokia Nokia -nordic Nordic Semiconductor -novtech NovTech, Inc. -nutsboard NutsBoard -nuvoton Nuvoton Technology Corporation -nvd New Vision Display -nvidia NVIDIA -nxp NXP Semiconductors -okaya Okaya Electric America, Inc. -oki Oki Electric Industry Co., Ltd. -olimex OLIMEX Ltd. -olpc One Laptop Per Child -onion Onion Corporation -onnn ON Semiconductor Corp. -ontat On Tat Industrial Company -opalkelly Opal Kelly Incorporated -opencores OpenCores.org -openrisc OpenRISC.io -option Option NV -oranth Shenzhen Oranth Technology Co., Ltd. -ORCL Oracle Corporation -orisetech Orise Technology -ortustech Ortus Technology Co., Ltd. -osddisplays OSD Displays -ovti OmniVision Technologies -oxsemi Oxford Semiconductor, Ltd. -panasonic Panasonic Corporation -parade Parade Technologies Inc. -pda Precision Design Associates, Inc. -pericom Pericom Technology Inc. -pervasive Pervasive Displays, Inc. -phicomm PHICOMM Co., Ltd. -phytec PHYTEC Messtechnik GmbH -picochip Picochip Ltd -pine64 Pine64 -pixcir PIXCIR MICROELECTRONICS Co., Ltd -plantower Plantower Co., Ltd -plathome Plat'Home Co., Ltd. -plda PLDA -plx Broadcom Corporation (formerly PLX Technology) -pni PNI Sensor Corporation -portwell Portwell Inc. -poslab Poslab Technology Co., Ltd. -powervr PowerVR (deprecated, use img) -probox2 PROBOX2 (by W2COMP Co., Ltd.) -pulsedlight PulsedLight, Inc -qca Qualcomm Atheros, Inc. -qcom Qualcomm Technologies, Inc -qemu QEMU, a generic and open source machine emulator and virtualizer -qi Qi Hardware -qiaodian QiaoDian XianShi Corporation -qnap QNAP Systems, Inc. -radxa Radxa -raidsonic RaidSonic Technology GmbH -ralink Mediatek/Ralink Technology Corp. -ramtron Ramtron International -raspberrypi Raspberry Pi Foundation -raydium Raydium Semiconductor Corp. -rda Unisoc Communications, Inc. -realtek Realtek Semiconductor Corp. -renesas Renesas Electronics Corporation -richtek Richtek Technology Corporation -ricoh Ricoh Co. Ltd. -rikomagic Rikomagic Tech Corp. Ltd -riscv RISC-V Foundation -rockchip Fuzhou Rockchip Electronics Co., Ltd -rocktech ROCKTECH DISPLAYS LIMITED -rohm ROHM Semiconductor Co., Ltd -ronbo Ronbo Electronics -roofull Shenzhen Roofull Technology Co, Ltd -samsung Samsung Semiconductor -samtec Samtec/Softing company -sancloud Sancloud Ltd -sandisk Sandisk Corporation -sbs Smart Battery System -schindler Schindler -seagate Seagate Technology PLC -semtech Semtech Corporation -sensirion Sensirion AG -sff Small Form Factor Committee -sgd Solomon Goldentek Display Corporation -sgx SGX Sensortech -sharp Sharp Corporation -shimafuji Shimafuji Electric, Inc. -si-en Si-En Technology Ltd. -sifive SiFive, Inc. -sigma Sigma Designs, Inc. -sii Seiko Instruments, Inc. -sil Silicon Image -silabs Silicon Laboratories -silead Silead Inc. -silergy Silergy Corp. -siliconmitus Silicon Mitus, Inc. -simtek -sirf SiRF Technology, Inc. -sis Silicon Integrated Systems Corp. -sitronix Sitronix Technology Corporation -skyworks Skyworks Solutions, Inc. -smsc Standard Microsystems Corporation -snps Synopsys, Inc. -socionext Socionext Inc. -solidrun SolidRun -solomon Solomon Systech Limited -sony Sony Corporation -spansion Spansion Inc. -sprd Spreadtrum Communications Inc. -sst Silicon Storage Technology, Inc. -st STMicroelectronics -starry Starry Electronic Technology (ShenZhen) Co., LTD -startek Startek -ste ST-Ericsson -stericsson ST-Ericsson -summit Summit microelectronics -sunchip Shenzhen Sunchip Technology Co., Ltd -SUNW Sun Microsystems, Inc -swir Sierra Wireless -syna Synaptics Inc. -synology Synology, Inc. -tbs TBS Technologies -tbs-biometrics Touchless Biometric Systems AG -tcg Trusted Computing Group -tcl Toby Churchill Ltd. -technexion TechNexion -technologic Technologic Systems -tempo Tempo Semiconductor -techstar Shenzhen Techstar Electronics Co., Ltd. -terasic Terasic Inc. -tfc Three Five Corp -thine THine Electronics, Inc. -ti Texas Instruments -tianma Tianma Micro-electronics Co., Ltd. -tlm Trusted Logic Mobility -tmt Tecon Microprocessor Technologies, LLC. -topeet Topeet -toradex Toradex AG -toshiba Toshiba Corporation -toumaz Toumaz -tpk TPK U.S.A. LLC -tplink TP-LINK Technologies Co., Ltd. -tpo TPO -tronfy Tronfy -tronsmart Tronsmart -truly Truly Semiconductors Limited -tsd Theobroma Systems Design und Consulting GmbH -tyan Tyan Computer Corporation -u-blox u-blox -ucrobotics uCRobotics -ubnt Ubiquiti Networks -udoo Udoo -uniwest United Western Technologies Corp (UniWest) -upisemi uPI Semiconductor Corp. -urt United Radiant Technology Corporation -usi Universal Scientific Industrial Co., Ltd. -v3 V3 Semiconductor -vamrs Vamrs Ltd. -variscite Variscite Ltd. -via VIA Technologies, Inc. -virtio Virtual I/O Device Specification, developed by the OASIS consortium -vishay Vishay Intertechnology, Inc -vitesse Vitesse Semiconductor Corporation -vivante Vivante Corporation -vocore VoCore Studio -voipac Voipac Technologies s.r.o. -vot Vision Optical Technology Co., Ltd. -vxt VXT Ltd -wd Western Digital Corp. -wetek WeTek Electronics, limited. -wexler Wexler -whwave Shenzhen whwave Electronics, Inc. -wi2wi Wi2Wi, Inc. -winbond Winbond Electronics corp. -winstar Winstar Display Corp. -wlf Wolfson Microelectronics -wm Wondermedia Technologies, Inc. -x-powers X-Powers -xes Extreme Engineering Solutions (X-ES) -xillybus Xillybus Ltd. -xlnx Xilinx -xunlong Shenzhen Xunlong Software CO.,Limited -ysoft Y Soft Corporation a.s. -zarlink Zarlink Semiconductor -zeitec ZEITEC Semiconductor Co., LTD. -zidoo Shenzhen Zidoo Technology Co., Ltd. -zii Zodiac Inflight Innovations -zte ZTE Corp. -zyxel ZyXEL Communications Corp. diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml index 33a65a45e319..f0bcff033ecc 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.yaml +++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml @@ -287,6 +287,8 @@ patternProperties: description: Everest Semiconductor Co. Ltd. "^everspin,.*": description: Everspin Technologies, Inc. + "^evervision,.*": + description: Evervision Electronics Co. Ltd. "^exar,.*": description: Exar Corporation "^excito,.*": @@ -849,6 +851,8 @@ patternProperties: description: Shenzhen Techstar Electronics Co., Ltd. "^terasic,.*": description: Terasic Inc. + "^tfc,.*": + description: Three Five Corp "^thine,.*": description: THine Electronics, Inc. "^ti,.*": @@ -923,6 +927,8 @@ patternProperties: description: Voipac Technologies s.r.o. "^vot,.*": description: Vision Optical Technology Co., Ltd. + "^vxt,.*": + description: VXT Ltd "^wd,.*": description: Western Digital Corp. "^wetek,.*": -- cgit v1.3-14-g43fede