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authorLinus Torvalds <torvalds@linux-foundation.org>2017-07-09 18:48:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-09 18:48:37 -0700
commitaf3c8d98508d37541d4bf57f13a984a7f73a328c (patch)
treee8dd974d6ebccd38b1e373be8a5e4a2f8bf3c6ce /Documentation
parentafs: Add metadata xattrs (diff)
parentdrm: Remove unused drm_file parameter to drm_syncobj_replace_fence() (diff)
downloadlinux-dev-af3c8d98508d37541d4bf57f13a984a7f73a328c.tar.xz
linux-dev-af3c8d98508d37541d4bf57f13a984a7f73a328c.zip
Merge tag 'drm-for-v4.13' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie: "This is the main pull request for the drm, I think I've got one later driver pull for mediatek SoC driver, I'm undecided on if it needs to go to you yet. Otherwise summary below: Core drm: - Atomic add driver private objects - Deprecate preclose hook in modern drivers - MST bandwidth tracking - Use kvmalloc in more places - Add mode_valid hook for crtc/encoder/bridge - Reduce sync_file construction time - Documentation updates - New DRM synchronisation object support New drivers: - pl111 - pl111 CLCD display controller Panel: - Innolux P079ZCA panel driver - Add NL12880B20-05, NL192108AC18-02D, P320HVN03 panels - panel-samsung-s6e3ha2: Add s6e3hf2 panel support i915: - SKL+ watermark fixes - G4x/G33 reset improvements - DP AUX backlight improvements - Buffer based GuC/host communication - New getparam for (sub)slice infomation - Cannonlake and Coffeelake initial patches - Execbuf optimisations radeon/amdgpu: - Lots of Vega10 bug fixes - Preliminary raven support - KIQ support for compute rings - MEC queue management rework - DCE6 Audio support - SR-IOV improvements - Better radeon/amdgpu selection support nouveau: - HDMI stereoscopic support - Display code rework for >= GM20x GPUs msm: - GEM rework for fine-grained locking - Per-process pagetable work - HDMI fixes for Snapdragon 820. vc4: - Remove 256MB CMA limit from vc4 - Add out-fence support - Add support for cygnus - Get/set tiling ioctls support - Add T-format tiling support for scanout zte: - add VGA support. etnaviv: - Thermal throttle support for newer GPUs - Restore userspace buffer cache performance - dma-buf sync fix stm: - add stm32f429 display support exynos: - Rework vblank handling - Fixup sw-trigger code sun4i: - V3s display engine support - HDMI support for older SoCs - Preliminary work on dual-pipeline SoCs. rcar-du: - VSP work imx-drm: - Remove counter load enable from PRE - Double read/write reduction flag support tegra: - Documentation for the host1x and drm driver. - Lots of staging ioctl fixes due to grate project work. omapdrm: - dma-buf fence support - TILER rotation fixes" * tag 'drm-for-v4.13' of git://people.freedesktop.org/~airlied/linux: (1270 commits) drm: Remove unused drm_file parameter to drm_syncobj_replace_fence() drm/amd/powerplay: fix bug fail to remove sysfs when rmmod amdgpu. amdgpu: Set cik/si_support to 1 by default if radeon isn't built drm/amdgpu/gfx9: fix driver reload with KIQ drm/amdgpu/gfx8: fix driver reload with KIQ drm/amdgpu: Don't call amd_powerplay_destroy() if we don't have powerplay drm/ttm: Fix use-after-free in ttm_bo_clean_mm drm/amd/amdgpu: move get memory type function from early init to sw init drm/amdgpu/cgs: always set reference clock in mode_info drm/amdgpu: fix vblank_time when displays are off drm/amd/powerplay: power value format change for Vega10 drm/amdgpu/gfx9: support the amdgpu.disable_cu option drm/amd/powerplay: change PPSMC_MSG_GetCurrPkgPwr for Vega10 drm/amdgpu: Make amdgpu_cs_parser_init static (v2) drm/amdgpu/cs: fix a typo in a comment drm/amdgpu: Fix the exported always on CU bitmap drm/amdgpu/gfx9: gfx_v9_0_enable_gfx_static_mg_power_gating() can be static drm/amdgpu/psp: upper_32_bits/lower_32_bits for address setup drm/amd/powerplay/cz: print message if smc message fails drm/amdgpu: fix typo in amdgpu_debugfs_test_ib_init ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt7
-rw-r--r--Documentation/devicetree/bindings/display/exynos/exynos5433-decon.txt13
-rw-r--r--Documentation/devicetree/bindings/display/panel/auo,p320hvn03.txt8
-rw-r--r--Documentation/devicetree/bindings/display/panel/innolux,p079zca.txt23
-rw-r--r--Documentation/devicetree/bindings/display/panel/nec,nl12880b20-05.txt8
-rw-r--r--Documentation/devicetree/bindings/display/panel/nlt,nl192108ac18-02d.txt8
-rw-r--r--Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2.txt5
-rw-r--r--Documentation/devicetree/bindings/display/st,stm32-ltdc.txt36
-rw-r--r--Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt127
-rw-r--r--Documentation/devicetree/bindings/display/zte,vou.txt21
-rw-r--r--Documentation/devicetree/bindings/vendor-prefixes.txt1
-rw-r--r--Documentation/gpu/drm-internals.rst66
-rw-r--r--Documentation/gpu/drm-kms-helpers.rst6
-rw-r--r--Documentation/gpu/drm-kms.rst4
-rw-r--r--Documentation/gpu/drm-mm.rst12
-rw-r--r--Documentation/gpu/index.rst2
-rw-r--r--Documentation/gpu/pl111.rst6
-rw-r--r--Documentation/gpu/tegra.rst178
-rw-r--r--Documentation/gpu/todo.rst13
-rw-r--r--Documentation/sync_file.txt23
20 files changed, 473 insertions, 94 deletions
diff --git a/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt b/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt
index ca02d3e4db91..284e2b14cfbe 100644
--- a/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt
+++ b/Documentation/devicetree/bindings/display/brcm,bcm-vc4.txt
@@ -5,7 +5,7 @@ with HDMI output and the HVS (Hardware Video Scaler) for compositing
display planes.
Required properties for VC4:
-- compatible: Should be "brcm,bcm2835-vc4"
+- compatible: Should be "brcm,bcm2835-vc4" or "brcm,cygnus-vc4"
Required properties for Pixel Valve:
- compatible: Should be one of "brcm,bcm2835-pixelvalve0",
@@ -54,11 +54,14 @@ Required properties for VEC:
See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
Required properties for V3D:
-- compatible: Should be "brcm,bcm2835-v3d"
+- compatible: Should be "brcm,bcm2835-v3d" or "brcm,cygnus-v3d"
- reg: Physical base address and length of the V3D's registers
- interrupts: The interrupt number
See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
+Optional properties for V3D:
+- clocks: The clock the unit runs on
+
Required properties for DSI:
- compatible: Should be "brcm,bcm2835-dsi0" or "brcm,bcm2835-dsi1"
- reg: Physical base address and length of the DSI block's registers
diff --git a/Documentation/devicetree/bindings/display/exynos/exynos5433-decon.txt b/Documentation/devicetree/bindings/display/exynos/exynos5433-decon.txt
index c9fd7b3807e7..549c538b38a5 100644
--- a/Documentation/devicetree/bindings/display/exynos/exynos5433-decon.txt
+++ b/Documentation/devicetree/bindings/display/exynos/exynos5433-decon.txt
@@ -8,12 +8,13 @@ Required properties:
- compatible: value should be one of:
"samsung,exynos5433-decon", "samsung,exynos5433-decon-tv";
- reg: physical base address and length of the DECON registers set.
-- interrupts: should contain a list of all DECON IP block interrupts in the
- order: VSYNC, LCD_SYSTEM. The interrupt specifier format
- depends on the interrupt controller used.
-- interrupt-names: should contain the interrupt names: "vsync", "lcd_sys"
- in the same order as they were listed in the interrupts
- property.
+- interrupt-names: should contain the interrupt names depending on mode of work:
+ video mode: "vsync",
+ command mode: "lcd_sys",
+ command mode with software trigger: "lcd_sys", "te".
+- interrupts or interrupts-extended: list of interrupt specifiers corresponding
+ to names privided in interrupt-names, as described in
+ interrupt-controller/interrupts.txt
- clocks: must include clock specifiers corresponding to entries in the
clock-names property.
- clock-names: list of clock names sorted in the same order as the clocks
diff --git a/Documentation/devicetree/bindings/display/panel/auo,p320hvn03.txt b/Documentation/devicetree/bindings/display/panel/auo,p320hvn03.txt
new file mode 100644
index 000000000000..59bb6cd8aa75
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/auo,p320hvn03.txt
@@ -0,0 +1,8 @@
+AU Optronics Corporation 31.5" FHD (1920x1080) TFT LCD panel
+
+Required properties:
+- compatible: should be "auo,p320hvn03"
+- power-supply: 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.
diff --git a/Documentation/devicetree/bindings/display/panel/innolux,p079zca.txt b/Documentation/devicetree/bindings/display/panel/innolux,p079zca.txt
new file mode 100644
index 000000000000..5c70a8380e58
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/innolux,p079zca.txt
@@ -0,0 +1,23 @@
+Innolux P079ZCA 7.85" 768x1024 TFT LCD panel
+
+Required properties:
+- compatible: should be "innolux,p079zca"
+- reg: DSI virtual channel of the peripheral
+- power-supply: phandle of the regulator that provides the supply voltage
+- enable-gpios: panel enable gpio
+
+Optional properties:
+- backlight: phandle of the backlight device attached to the panel
+
+Example:
+
+ &mipi_dsi {
+ panel {
+ compatible = "innolux,p079zca";
+ reg = <0>;
+ power-supply = <...>;
+ backlight = <&backlight>;
+ enable-gpios = <&gpio1 13 GPIO_ACTIVE_HIGH>;
+ status = "okay";
+ };
+ };
diff --git a/Documentation/devicetree/bindings/display/panel/nec,nl12880b20-05.txt b/Documentation/devicetree/bindings/display/panel/nec,nl12880b20-05.txt
new file mode 100644
index 000000000000..71cbc49ecfab
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/nec,nl12880b20-05.txt
@@ -0,0 +1,8 @@
+NEC LCD Technologies, Ltd. 12.1" WXGA (1280x800) LVDS TFT LCD panel
+
+Required properties:
+- compatible: should be "nec,nl12880bc20-05"
+- power-supply: 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.
diff --git a/Documentation/devicetree/bindings/display/panel/nlt,nl192108ac18-02d.txt b/Documentation/devicetree/bindings/display/panel/nlt,nl192108ac18-02d.txt
new file mode 100644
index 000000000000..1a639fd8778d
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/nlt,nl192108ac18-02d.txt
@@ -0,0 +1,8 @@
+NLT Technologies, Ltd. 15.6" FHD (1920x1080) LVDS TFT LCD panel
+
+Required properties:
+- compatible: should be "nlt,nl192108ac18-02d"
+- power-supply: 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.
diff --git a/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2.txt b/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2.txt
index 18854f4c8376..4acea25c244b 100644
--- a/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2.txt
+++ b/Documentation/devicetree/bindings/display/panel/samsung,s6e3ha2.txt
@@ -1,7 +1,10 @@
Samsung S6E3HA2 5.7" 1440x2560 AMOLED panel
+Samsung S6E3HF2 5.65" 1600x2560 AMOLED panel
Required properties:
- - compatible: "samsung,s6e3ha2"
+ - compatible: should be one of:
+ "samsung,s6e3ha2",
+ "samsung,s6e3hf2".
- reg: the virtual channel number of a DSI peripheral
- vdd3-supply: I/O voltage supply
- vci-supply: voltage supply for analog circuits
diff --git a/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt b/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt
new file mode 100644
index 000000000000..8e1476941c0f
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt
@@ -0,0 +1,36 @@
+* STMicroelectronics STM32 lcd-tft display controller
+
+- ltdc: lcd-tft display controller host
+ must be a sub-node of st-display-subsystem
+ Required properties:
+ - compatible: "st,stm32-ltdc"
+ - reg: Physical base address of the IP registers and length of memory mapped region.
+ - clocks: A list of phandle + clock-specifier pairs, one for each
+ entry in 'clock-names'.
+ - clock-names: A list of clock names. For ltdc it should contain:
+ - "lcd" for the clock feeding the output pixel clock & IP clock.
+ - resets: reset to be used by the device (defined by use of RCC macro).
+ Required nodes:
+ - Video port for RGB output.
+
+Example:
+
+/ {
+ ...
+ soc {
+ ...
+ ltdc: display-controller@40016800 {
+ compatible = "st,stm32-ltdc";
+ reg = <0x40016800 0x200>;
+ interrupts = <88>, <89>;
+ resets = <&rcc STM32F4_APB2_RESET(LTDC)>;
+ clocks = <&rcc 1 CLK_LCD>;
+ clock-names = "lcd";
+
+ port {
+ ltdc_out_rgb: endpoint {
+ };
+ };
+ };
+ };
+};
diff --git a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
index 57a8d0610062..b83e6018041d 100644
--- a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
+++ b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
@@ -4,6 +4,44 @@ Allwinner A10 Display Pipeline
The Allwinner A10 Display pipeline is composed of several components
that are going to be documented below:
+For the input port of all components up to the TCON in the display
+pipeline, if there are multiple components, the local endpoint IDs
+must correspond to the index of the upstream block. For example, if
+the remote endpoint is Frontend 1, then the local endpoint ID must
+be 1.
+
+Conversely, for the output ports of the same group, the remote endpoint
+ID must be the index of the local hardware block. If the local backend
+is backend 1, then the remote endpoint ID must be 1.
+
+HDMI Encoder
+------------
+
+The HDMI Encoder supports the HDMI video and audio outputs, and does
+CEC. It is one end of the pipeline.
+
+Required properties:
+ - compatible: value must be one of:
+ * allwinner,sun5i-a10s-hdmi
+ - reg: base address and size of memory-mapped region
+ - interrupts: interrupt associated to this IP
+ - clocks: phandles to the clocks feeding the HDMI encoder
+ * ahb: the HDMI interface clock
+ * mod: the HDMI module clock
+ * pll-0: the first video PLL
+ * pll-1: the second video PLL
+ - clock-names: the clock names mentioned above
+ - dmas: phandles to the DMA channels used by the HDMI encoder
+ * ddc-tx: The channel for DDC transmission
+ * ddc-rx: The channel for DDC reception
+ * audio-tx: The channel used for audio transmission
+ - dma-names: the channel names mentioned above
+
+ - ports: A ports node with endpoint definitions as defined in
+ Documentation/devicetree/bindings/media/video-interfaces.txt. The
+ first port should be the input endpoint. The second should be the
+ output, usually to an HDMI connector.
+
TV Encoder
----------
@@ -31,6 +69,7 @@ Required properties:
* allwinner,sun6i-a31-tcon
* allwinner,sun6i-a31s-tcon
* allwinner,sun8i-a33-tcon
+ * allwinner,sun8i-v3s-tcon
- reg: base address and size of memory-mapped region
- interrupts: interrupt associated to this IP
- clocks: phandles to the clocks feeding the TCON. Three are needed:
@@ -47,12 +86,15 @@ Required properties:
Documentation/devicetree/bindings/media/video-interfaces.txt. The
first port should be the input endpoint, the second one the output
- The output should have two endpoints. The first is the block
- connected to the TCON channel 0 (usually a panel or a bridge), the
- second the block connected to the TCON channel 1 (usually the TV
- encoder)
+ The output may have multiple endpoints. The TCON has two channels,
+ usually with the first channel being used for the panels interfaces
+ (RGB, LVDS, etc.), and the second being used for the outputs that
+ require another controller (TV Encoder, HDMI, etc.). The endpoints
+ will take an extra property, allwinner,tcon-channel, to specify the
+ channel the endpoint is associated to. If that property is not
+ present, the endpoint number will be used as the channel number.
-On SoCs other than the A33, there is one more clock required:
+On SoCs other than the A33 and V3s, there is one more clock required:
- 'tcon-ch1': The clock driving the TCON channel 1
DRC
@@ -138,6 +180,26 @@ Required properties:
Documentation/devicetree/bindings/media/video-interfaces.txt. The
first port should be the input endpoints, the second one the outputs
+Display Engine 2.0 Mixer
+------------------------
+
+The DE2 mixer have many functionalities, currently only layer blending is
+supported.
+
+Required properties:
+ - compatible: value must be one of:
+ * allwinner,sun8i-v3s-de2-mixer
+ - reg: base address and size of the memory-mapped region.
+ - clocks: phandles to the clocks feeding the mixer
+ * bus: the mixer interface clock
+ * mod: the mixer module clock
+ - clock-names: the clock names mentioned above
+ - resets: phandles to the reset controllers driving the mixer
+
+- ports: A ports node with endpoint definitions as defined in
+ Documentation/devicetree/bindings/media/video-interfaces.txt. The
+ first port should be the input endpoints, the second one the output
+
Display Engine Pipeline
-----------------------
@@ -148,13 +210,15 @@ extra node.
Required properties:
- compatible: value must be one of:
+ * allwinner,sun5i-a10s-display-engine
* allwinner,sun5i-a13-display-engine
* allwinner,sun6i-a31-display-engine
* allwinner,sun6i-a31s-display-engine
* allwinner,sun8i-a33-display-engine
+ * allwinner,sun8i-v3s-display-engine
- allwinner,pipelines: list of phandle to the display engine
- frontends available.
+ frontends (DE 1.0) or mixers (DE 2.0) available.
Example:
@@ -173,6 +237,57 @@ panel: panel {
};
};
+connector {
+ compatible = "hdmi-connector";
+ type = "a";
+
+ port {
+ hdmi_con_in: endpoint {
+ remote-endpoint = <&hdmi_out_con>;
+ };
+ };
+};
+
+hdmi: hdmi@01c16000 {
+ compatible = "allwinner,sun5i-a10s-hdmi";
+ reg = <0x01c16000 0x1000>;
+ interrupts = <58>;
+ clocks = <&ccu CLK_AHB_HDMI>, <&ccu CLK_HDMI>,
+ <&ccu CLK_PLL_VIDEO0_2X>,
+ <&ccu CLK_PLL_VIDEO1_2X>;
+ clock-names = "ahb", "mod", "pll-0", "pll-1";
+ dmas = <&dma SUN4I_DMA_NORMAL 16>,
+ <&dma SUN4I_DMA_NORMAL 16>,
+ <&dma SUN4I_DMA_DEDICATED 24>;
+ dma-names = "ddc-tx", "ddc-rx", "audio-tx";
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ hdmi_in_tcon0: endpoint {
+ remote-endpoint = <&tcon0_out_hdmi>;
+ };
+ };
+
+ port@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+
+ hdmi_out_con: endpoint {
+ remote-endpoint = <&hdmi_con_in>;
+ };
+ };
+ };
+};
+
tve0: tv-encoder@01c0a000 {
compatible = "allwinner,sun4i-a10-tv-encoder";
reg = <0x01c0a000 0x1000>;
diff --git a/Documentation/devicetree/bindings/display/zte,vou.txt b/Documentation/devicetree/bindings/display/zte,vou.txt
index 9c356284232b..38476475fd60 100644
--- a/Documentation/devicetree/bindings/display/zte,vou.txt
+++ b/Documentation/devicetree/bindings/display/zte,vou.txt
@@ -58,6 +58,18 @@ Required properties:
integer cells. The first cell is the offset of SYSCTRL register used
to control TV Encoder DAC power, and the second cell is the bit mask.
+* VGA output device
+
+Required properties:
+ - compatible: should be "zte,zx296718-vga"
+ - reg: Physical base address and length of the VGA device IO region
+ - interrupts : VGA interrupt number to CPU
+ - clocks: Phandle with clock-specifier pointing to VGA I2C clock.
+ - clock-names: Must be "i2c_wclk".
+ - zte,vga-power-control: the phandle to SYSCTRL block followed by two
+ integer cells. The first cell is the offset of SYSCTRL register used
+ to control VGA DAC power, and the second cell is the bit mask.
+
Example:
vou: vou@1440000 {
@@ -81,6 +93,15 @@ vou: vou@1440000 {
"main_wclk", "aux_wclk";
};
+ vga: vga@8000 {
+ compatible = "zte,zx296718-vga";
+ reg = <0x8000 0x1000>;
+ interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&topcrm VGA_I2C_WCLK>;
+ clock-names = "i2c_wclk";
+ zte,vga-power-control = <&sysctrl 0x170 0xe0>;
+ };
+
hdmi: hdmi@c000 {
compatible = "zte,zx296718-hdmi";
reg = <0xc000 0x4000>;
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 52cfd5f97b6b..daf465bef758 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -227,6 +227,7 @@ nexbox Nexbox
newhaven Newhaven Display International
ni National Instruments
nintendo Nintendo
+nlt NLT Technologies, Ltd.
nokia Nokia
nordic Nordic Semiconductor
nuvoton Nuvoton Technology Corporation
diff --git a/Documentation/gpu/drm-internals.rst b/Documentation/gpu/drm-internals.rst
index babfb6143bd9..0d936c67bf7d 100644
--- a/Documentation/gpu/drm-internals.rst
+++ b/Documentation/gpu/drm-internals.rst
@@ -98,6 +98,9 @@ DRIVER_ATOMIC
implement appropriate obj->atomic_get_property() vfuncs for any
modeset objects with driver specific properties.
+DRIVER_SYNCOBJ
+ Driver support drm sync objects.
+
Major, Minor and Patchlevel
~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -149,60 +152,15 @@ Device Instance and Driver Handling
Driver Load
-----------
-IRQ Registration
-~~~~~~~~~~~~~~~~
-
-The DRM core tries to facilitate IRQ handler registration and
-unregistration by providing :c:func:`drm_irq_install()` and
-:c:func:`drm_irq_uninstall()` functions. Those functions only
-support a single interrupt per device, devices that use more than one
-IRQs need to be handled manually.
-
-Managed IRQ Registration
-''''''''''''''''''''''''
-
-:c:func:`drm_irq_install()` starts by calling the irq_preinstall
-driver operation. The operation is optional and must make sure that the
-interrupt will not get fired by clearing all pending interrupt flags or
-disabling the interrupt.
-
-The passed-in IRQ will then be requested by a call to
-:c:func:`request_irq()`. If the DRIVER_IRQ_SHARED driver feature
-flag is set, a shared (IRQF_SHARED) IRQ handler will be requested.
-
-The IRQ handler function must be provided as the mandatory irq_handler
-driver operation. It will get passed directly to
-:c:func:`request_irq()` and thus has the same prototype as all IRQ
-handlers. It will get called with a pointer to the DRM device as the
-second argument.
-
-Finally the function calls the optional irq_postinstall driver
-operation. The operation usually enables interrupts (excluding the
-vblank interrupt, which is enabled separately), but drivers may choose
-to enable/disable interrupts at a different time.
-
-:c:func:`drm_irq_uninstall()` is similarly used to uninstall an
-IRQ handler. It starts by waking up all processes waiting on a vblank
-interrupt to make sure they don't hang, and then calls the optional
-irq_uninstall driver operation. The operation must disable all hardware
-interrupts. Finally the function frees the IRQ by calling
-:c:func:`free_irq()`.
-
-Manual IRQ Registration
-'''''''''''''''''''''''
-
-Drivers that require multiple interrupt handlers can't use the managed
-IRQ registration functions. In that case IRQs must be registered and
-unregistered manually (usually with the :c:func:`request_irq()` and
-:c:func:`free_irq()` functions, or their :c:func:`devm_request_irq()` and
-:c:func:`devm_free_irq()` equivalents).
-
-When manually registering IRQs, drivers must not set the
-DRIVER_HAVE_IRQ driver feature flag, and must not provide the
-irq_handler driver operation. They must set the :c:type:`struct
-drm_device <drm_device>` irq_enabled field to 1 upon
-registration of the IRQs, and clear it to 0 after unregistering the
-IRQs.
+
+IRQ Helper Library
+~~~~~~~~~~~~~~~~~~
+
+.. kernel-doc:: drivers/gpu/drm/drm_irq.c
+ :doc: irq helpers
+
+.. kernel-doc:: drivers/gpu/drm/drm_irq.c
+ :export:
Memory Manager Initialization
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
diff --git a/Documentation/gpu/drm-kms-helpers.rst b/Documentation/gpu/drm-kms-helpers.rst
index c075aadd7078..7c5e2549a58a 100644
--- a/Documentation/gpu/drm-kms-helpers.rst
+++ b/Documentation/gpu/drm-kms-helpers.rst
@@ -143,6 +143,12 @@ Bridge Helper Reference
.. kernel-doc:: drivers/gpu/drm/drm_bridge.c
:export:
+Panel-Bridge Helper Reference
+-----------------------------
+
+.. kernel-doc:: drivers/gpu/drm/bridge/panel.c
+ :export:
+
.. _drm_panel_helper:
Panel Helper Reference
diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
index bfecd21a8cdf..2d77c9580164 100644
--- a/Documentation/gpu/drm-kms.rst
+++ b/Documentation/gpu/drm-kms.rst
@@ -612,8 +612,8 @@ operation handler.
Vertical Blanking and Interrupt Handling Functions Reference
------------------------------------------------------------
-.. kernel-doc:: include/drm/drm_irq.h
+.. kernel-doc:: include/drm/drm_vblank.h
:internal:
-.. kernel-doc:: drivers/gpu/drm/drm_irq.c
+.. kernel-doc:: drivers/gpu/drm/drm_vblank.c
:export:
diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst
index 96b9c34c21e4..9412798645c1 100644
--- a/Documentation/gpu/drm-mm.rst
+++ b/Documentation/gpu/drm-mm.rst
@@ -484,3 +484,15 @@ DRM Cache Handling
.. kernel-doc:: drivers/gpu/drm/drm_cache.c
:export:
+
+DRM Sync Objects
+===========================
+
+.. kernel-doc:: drivers/gpu/drm/drm_syncobj.c
+ :doc: Overview
+
+.. kernel-doc:: include/drm/drm_syncobj.h
+ :export:
+
+.. kernel-doc:: drivers/gpu/drm/drm_syncobj.c
+ :export:
diff --git a/Documentation/gpu/index.rst b/Documentation/gpu/index.rst
index c572f092739e..35d673bf9b56 100644
--- a/Documentation/gpu/index.rst
+++ b/Documentation/gpu/index.rst
@@ -12,6 +12,8 @@ Linux GPU Driver Developer's Guide
drm-uapi
i915
meson
+ pl111
+ tegra
tinydrm
vc4
vga-switcheroo
diff --git a/Documentation/gpu/pl111.rst b/Documentation/gpu/pl111.rst
new file mode 100644
index 000000000000..9b03736d33dd
--- /dev/null
+++ b/Documentation/gpu/pl111.rst
@@ -0,0 +1,6 @@
+==========================================
+ drm/pl111 ARM PrimeCell PL111 CLCD Driver
+==========================================
+
+.. kernel-doc:: drivers/gpu/drm/pl111/pl111_drv.c
+ :doc: ARM PrimeCell PL111 CLCD Driver
diff --git a/Documentation/gpu/tegra.rst b/Documentation/gpu/tegra.rst
new file mode 100644
index 000000000000..d2ed8938ca43
--- /dev/null
+++ b/Documentation/gpu/tegra.rst
@@ -0,0 +1,178 @@
+===============================================
+ drm/tegra NVIDIA Tegra GPU and display driver
+===============================================
+
+NVIDIA Tegra SoCs support a set of display, graphics and video functions via
+the host1x controller. host1x supplies command streams, gathered from a push
+buffer provided directly by the CPU, to its clients via channels. Software,
+or blocks amongst themselves, can use syncpoints for synchronization.
+
+Up until, but not including, Tegra124 (aka Tegra K1) the drm/tegra driver
+supports the built-in GPU, comprised of the gr2d and gr3d engines. Starting
+with Tegra124 the GPU is based on the NVIDIA desktop GPU architecture and
+supported by the drm/nouveau driver.
+
+The drm/tegra driver supports NVIDIA Tegra SoC generations since Tegra20. It
+has three parts:
+
+ - A host1x driver that provides infrastructure and access to the host1x
+ services.
+
+ - A KMS driver that supports the display controllers as well as a number of
+ outputs, such as RGB, HDMI, DSI, and DisplayPort.
+
+ - A set of custom userspace IOCTLs that can be used to submit jobs to the
+ GPU and video engines via host1x.
+
+Driver Infrastructure
+=====================
+
+The various host1x clients need to be bound together into a logical device in
+order to expose their functionality to users. The infrastructure that supports
+this is implemented in the host1x driver. When a driver is registered with the
+infrastructure it provides a list of compatible strings specifying the devices
+that it needs. The infrastructure creates a logical device and scan the device
+tree for matching device nodes, adding the required clients to a list. Drivers
+for individual clients register with the infrastructure as well and are added
+to the logical host1x device.
+
+Once all clients are available, the infrastructure will initialize the logical
+device using a driver-provided function which will set up the bits specific to
+the subsystem and in turn initialize each of its clients.
+
+Similarly, when one of the clients is unregistered, the infrastructure will
+destroy the logical device by calling back into the driver, which ensures that
+the subsystem specific bits are torn down and the clients destroyed in turn.
+
+Host1x Infrastructure Reference
+-------------------------------
+
+.. kernel-doc:: include/linux/host1x.h
+
+.. kernel-doc:: drivers/gpu/host1x/bus.c
+ :export:
+
+Host1x Syncpoint Reference
+--------------------------
+
+.. kernel-doc:: drivers/gpu/host1x/syncpt.c
+ :export:
+
+KMS driver
+==========
+
+The display hardware has remained mostly backwards compatible over the various
+Tegra SoC generations, up until Tegra186 which introduces several changes that
+make it difficult to support with a parameterized driver.
+
+Display Controllers
+-------------------
+
+Tegra SoCs have two display controllers, each of which can be associated with
+zero or more outputs. Outputs can also share a single display controller, but
+only if they run with compatible display timings. Two display controllers can
+also share a single framebuffer, allowing cloned configurations even if modes
+on two outputs don't match. A display controller is modelled as a CRTC in KMS
+terms.
+
+On Tegra186, the number of display controllers has been increased to three. A
+display controller can no longer drive all of the outputs. While two of these
+controllers can drive both DSI outputs and both SOR outputs, the third cannot
+drive any DSI.
+
+Windows
+~~~~~~~
+
+A display controller controls a set of windows that can be used to composite
+multiple buffers onto the screen. While it is possible to assign arbitrary Z
+ordering to individual windows (by programming the corresponding blending
+registers), this is currently not supported by the driver. Instead, it will
+assume a fixed Z ordering of the windows (window A is the root window, that
+is, the lowest, while windows B and C are overlaid on top of window A). The
+overlay windows support multiple pixel formats and can automatically convert
+from YUV to RGB at scanout time. This makes them useful for displaying video
+content. In KMS, each window is modelled as a plane. Each display controller
+has a hardware cursor that is exposed as a cursor plane.
+
+Outputs
+-------
+
+The type and number of supported outputs varies between Tegra SoC generations.
+All generations support at least HDMI. While earlier generations supported the
+very simple RGB interfaces (one per display controller), recent generations no
+longer do and instead provide standard interfaces such as DSI and eDP/DP.
+
+Outputs are modelled as a composite encoder/connector pair.
+
+RGB/LVDS
+~~~~~~~~
+
+This interface is no longer available since Tegra124. It has been replaced by
+the more standard DSI and eDP interfaces.
+
+HDMI
+~~~~
+
+HDMI is supported on all Tegra SoCs. Starting with Tegra210, HDMI is provided
+by the versatile SOR output, which supports eDP, DP and HDMI. The SOR is able
+to support HDMI 2.0, though support for this is currently not merged.
+
+DSI
+~~~
+
+Although Tegra has supported DSI since Tegra30, the controller has changed in
+several ways in Tegra114. Since none of the publicly available development
+boards prior to Dalmore (Tegra114) have made use of DSI, only Tegra114 and
+later are supported by the drm/tegra driver.
+
+eDP/DP
+~~~~~~
+
+eDP was first introduced in Tegra124 where it was used to drive the display
+panel for notebook form factors. Tegra210 added support for full DisplayPort
+support, though this is currently not implemented in the drm/tegra driver.
+
+Userspace Interface
+===================
+
+The userspace interface provided by drm/tegra allows applications to create
+GEM buffers, access and control syncpoints as well as submit command streams
+to host1x.
+
+GEM Buffers
+-----------
+
+The ``DRM_IOCTL_TEGRA_GEM_CREATE`` IOCTL is used to create a GEM buffer object
+with Tegra-specific flags. This is useful for buffers that should be tiled, or
+that are to be scanned out upside down (useful for 3D content).
+
+After a GEM buffer object has been created, its memory can be mapped by an
+application using the mmap offset returned by the ``DRM_IOCTL_TEGRA_GEM_MMAP``
+IOCTL.
+
+Syncpoints
+----------
+
+The current value of a syncpoint can be obtained by executing the
+``DRM_IOCTL_TEGRA_SYNCPT_READ`` IOCTL. Incrementing the syncpoint is achieved
+using the ``DRM_IOCTL_TEGRA_SYNCPT_INCR`` IOCTL.
+
+Userspace can also request blocking on a syncpoint. To do so, it needs to
+execute the ``DRM_IOCTL_TEGRA_SYNCPT_WAIT`` IOCTL, specifying the value of
+the syncpoint to wait for. The kernel will release the application when the
+syncpoint reaches that value or after a specified timeout.
+
+Command Stream Submission
+-------------------------
+
+Before an application can submit command streams to host1x it needs to open a
+channel to an engine using the ``DRM_IOCTL_TEGRA_OPEN_CHANNEL`` IOCTL. Client
+IDs are used to identify the target of the channel. When a channel is no
+longer needed, it can be closed using the ``DRM_IOCTL_TEGRA_CLOSE_CHANNEL``
+IOCTL. To retrieve the syncpoint associated with a channel, an application
+can use the ``DRM_IOCTL_TEGRA_GET_SYNCPT``.
+
+After opening a channel, submitting command streams is easy. The application
+writes commands into the memory backing a GEM buffer object and passes these
+to the ``DRM_IOCTL_TEGRA_SUBMIT`` IOCTL along with various other parameters,
+such as the syncpoints or relocations used in the job submission.
diff --git a/Documentation/gpu/todo.rst b/Documentation/gpu/todo.rst
index 6162d0e9dc28..1ae42006deea 100644
--- a/Documentation/gpu/todo.rst
+++ b/Documentation/gpu/todo.rst
@@ -177,19 +177,6 @@ following drivers still use ``struct_mutex``: ``msm``, ``omapdrm`` and
Contact: Daniel Vetter, respective driver maintainers
-Switch to drm_connector_list_iter for any connector_list walking
-----------------------------------------------------------------
-
-Connectors can be hotplugged, and we now have a special list of helpers to walk
-the connector_list in a race-free fashion, without incurring deadlocks on
-mutexes and other fun stuff.
-
-Unfortunately most drivers are not converted yet. At least all those supporting
-DP MST hotplug should be converted, since for those drivers the difference
-matters. See drm_for_each_connector_iter() vs. drm_for_each_connector().
-
-Contact: Daniel Vetter
-
Core refactorings
=================
diff --git a/Documentation/sync_file.txt b/Documentation/sync_file.txt
index c3d033a06e8d..496fb2c3b3e6 100644
--- a/Documentation/sync_file.txt
+++ b/Documentation/sync_file.txt
@@ -1,8 +1,8 @@
- Sync File API Guide
- ~~~~~~~~~~~~~~~~~~~
+===================
+Sync File API Guide
+===================
- Gustavo Padovan
- <gustavo at padovan dot org>
+:Author: Gustavo Padovan <gustavo at padovan dot org>
This document serves as a guide for device drivers writers on what the
sync_file API is, and how drivers can support it. Sync file is the carrier of
@@ -46,16 +46,17 @@ Creating Sync Files
When a driver needs to send an out-fence userspace it creates a sync_file.
-Interface:
+Interface::
+
struct sync_file *sync_file_create(struct dma_fence *fence);
The caller pass the out-fence and gets back the sync_file. That is just the
first step, next it needs to install an fd on sync_file->file. So it gets an
-fd:
+fd::
fd = get_unused_fd_flags(O_CLOEXEC);
-and installs it on sync_file->file:
+and installs it on sync_file->file::
fd_install(fd, sync_file->file);
@@ -71,7 +72,8 @@ When userspace needs to send an in-fence to the driver it passes file descriptor
of the Sync File to the kernel. The kernel can then retrieve the fences
from it.
-Interface:
+Interface::
+
struct dma_fence *sync_file_get_fence(int fd);
@@ -79,5 +81,6 @@ The returned reference is owned by the caller and must be disposed of
afterwards using dma_fence_put(). In case of error, a NULL is returned instead.
References:
-[1] struct sync_file in include/linux/sync_file.h
-[2] All interfaces mentioned above defined in include/linux/sync_file.h
+
+1. struct sync_file in include/linux/sync_file.h
+2. All interfaces mentioned above defined in include/linux/sync_file.h