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/linux-6.12.1/Documentation/devicetree/bindings/display/
Dsimple-framebuffer.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/display/simple-framebuffer.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Simple Framebuffer
10 - Hans de Goede <hdegoede@redhat.com>
13 A simple frame-buffer describes a frame-buffer setup by firmware or
19 sub-nodes of the chosen node (*). Simplefb nodes must be named
20 framebuffer@<address>.
41 interaction, then the chosen node stdout-path property should point
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/linux-6.12.1/drivers/firmware/
Dsysfb.c1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Copyright (c) 2012-2013 David Herrmann <dh.herrmann@gmail.com>
8 * Simple-Framebuffer support
9 * Create a platform-device for any available boot framebuffer. The
10 * simple-framebuffer platform device is already available on DT systems, so
12 * platform device compatible with the "simple-framebuffer" DT object. If
13 * the framebuffer is incompatible, we instead create a legacy
14 * "vesa-framebuffer", "efi-framebuffer" or "platform-framebuffer" device and
16 * to pick these devices up without messing with simple-framebuffer drivers.
19 * If CONFIG_SYSFB_SIMPLEFB is not selected, never register "simple-framebuffer"
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Dsysfb_simplefb.c1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Copyright (c) 2012-2013 David Herrmann <dh.herrmann@gmail.com>
8 * simple-framebuffer probing
9 * Try to convert "screen_info" into a "simple-framebuffer" compatible mode.
26 /* try parsing screen_info into a simple-framebuffer mode struct */
34 type = si->orig_video_isVGA; in sysfb_parse_mode()
39 * The meaning of depth and bpp for direct-color formats is in sysfb_parse_mode()
42 * - DRM format info specifies depth as the number of color in sysfb_parse_mode()
44 * - Linux' EFI platform code computes lfb_depth from the in sysfb_parse_mode()
46 * - VBE 1.1 defines lfb_depth for XRGB1555 as 16, but later in sysfb_parse_mode()
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/linux-6.12.1/include/linux/platform_data/
Dsimplefb.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * simplefb.h - Simple Framebuffer Device
32 * Data-Format for Simple-Framebuffers
33 * @name: unique 0-terminated name that can be used to identify the mode
36 * @fourcc: 32bit DRM four-CC code (see drm_fourcc.h)
49 * Simple-Framebuffer description
50 * If the arch-boot code creates simple-framebuffers without DT support, it
51 * can pass the width, height, stride and format via this platform-data object.
52 * The framebuffer location must be given as IORESOURCE_MEM resource.
/linux-6.12.1/drivers/gpu/drm/
Ddrm_gem_atomic_helper.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 #include <linux/dma-resv.h>
4 #include <linux/dma-fence-chain.h>
19 * The GEM atomic helpers library implements generic atomic-commit
21 * synchronization helpers, and plane state and framebuffer BO mappings
24 * Before scanout, a plane's framebuffer needs to be synchronized with
25 * possible writers that draw into the framebuffer. All drivers should
28 * the framebuffer so that the DRM core can synchronize access automatically.
32 * .. code-block:: c
42 * into the HW's framebuffer memory during an atomic update. This requires
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Ddrm_gem_vram_helper.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 #include <linux/iosys-map.h>
31 * framebuffer devices with dedicated memory.
34 * manager for simple framebuffer devices with dedicated video memory. GEM
39 * graphics buffers, such as an on-screen framebuffer. GEM does not provide
54 * .. code-block:: c
90 * clean-up handler to run during the DRM device's release.
110 * Buffer-objects helpers
120 WARN_ON(gbo->vmap_use_count); in drm_gem_vram_cleanup()
121 WARN_ON(iosys_map_is_set(&gbo->map)); in drm_gem_vram_cleanup()
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/linux-6.12.1/arch/arm64/boot/dts/apple/
Dt8112-jxxx.dtsi1 // SPDX-License-Identifier: GPL-2.0+ OR MIT
7 * target-type: J493, J413
19 #address-cells = <2>;
20 #size-cells = <2>;
23 stdout-path = "serial0";
25 framebuffer0: framebuffer@0 {
26 compatible = "apple,simple-framebuffer", "simple-framebuffer";
50 hpm0: usb-pd@38 {
53 interrupt-parent = <&pinctrl_ap>;
55 interrupt-names = "irq";
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Dt8103-jxxx.dtsi1 // SPDX-License-Identifier: GPL-2.0+ OR MIT
7 * target-type: J274, J293, J313, J456, J457
21 #address-cells = <2>;
22 #size-cells = <2>;
25 stdout-path = "serial0";
27 framebuffer0: framebuffer@0 {
28 compatible = "apple,simple-framebuffer", "simple-framebuffer";
50 hpm0: usb-pd@38 {
53 interrupt-parent = <&pinctrl_ap>;
55 interrupt-names = "irq";
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Dt600x-j314-j316.dtsi1 // SPDX-License-Identifier: GPL-2.0+ OR MIT
3 * MacBook Pro (14/16-inch, 2021)
7 * target-type: J314s / J314c / J316s / J316c
12 #include <dt-bindings/leds/common.h>
21 #address-cells = <2>;
22 #size-cells = <2>;
25 stdout-path = "serial0";
27 framebuffer0: framebuffer@0 {
28 compatible = "apple,simple-framebuffer", "simple-framebuffer";
40 led-controller {
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Dt600x-j375.dtsi1 // SPDX-License-Identifier: GPL-2.0+ OR MIT
7 * target-type: J375c / J375d
19 #address-cells = <2>;
20 #size-cells = <2>;
23 stdout-path = "serial0";
25 framebuffer0: framebuffer@0 {
26 compatible = "apple,simple-framebuffer", "simple-framebuffer";
45 hpm0: usb-pd@38 {
48 interrupt-parent = <&pinctrl_ap>;
50 interrupt-names = "irq";
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/linux-6.12.1/drivers/gpu/drm/tiny/
Dsimpledrm.c1 // SPDX-License-Identifier: GPL-2.0-only
32 #define DRIVER_DESC "DRM driver for simple-framebuffer platform devices"
46 drm_err(dev, "simplefb: invalid framebuffer %s of %u\n", in simplefb_get_validated_int()
48 return -EINVAL; in simplefb_get_validated_int()
58 drm_err(dev, "simplefb: invalid framebuffer %s of %u\n", in simplefb_get_validated_int0()
60 return -EINVAL; in simplefb_get_validated_int0()
74 drm_err(dev, "simplefb: missing framebuffer format\n"); in simplefb_get_validated_format()
75 return ERR_PTR(-EINVAL); in simplefb_get_validated_format()
79 if (!strcmp(format_name, fmt->name)) { in simplefb_get_validated_format()
80 info = drm_format_info(fmt->fourcc); in simplefb_get_validated_format()
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/linux-6.12.1/drivers/firmware/google/
Dframebuffer-coreboot.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * framebuffer-coreboot.c
5 * Memory based framebuffer accessed through coreboot table.
7 * Copyright 2012-2013 David Herrmann <dh.herrmann@gmail.com>
29 struct lb_framebuffer *fb = &dev->framebuffer; in framebuffer_probe()
33 .width = fb->x_resolution, in framebuffer_probe()
34 .height = fb->y_resolution, in framebuffer_probe()
35 .stride = fb->bytes_per_line, in framebuffer_probe()
39 if (!fb->physical_address) in framebuffer_probe()
40 return -ENODEV; in framebuffer_probe()
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/linux-6.12.1/arch/arm64/boot/dts/amlogic/
Dmeson-gx.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
12 #include <dt-bindings/gpio/gpio.h>
13 #include <dt-bindings/interrupt-controller/irq.h>
14 #include <dt-bindings/interrupt-controller/arm-gic.h>
15 #include <dt-bindings/power/meson-gxbb-power.h>
16 #include <dt-bindings/thermal/thermal.h>
19 interrupt-parent = <&gic>;
20 #address-cells = <2>;
21 #size-cells = <2>;
29 reserved-memory {
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/linux-6.12.1/Documentation/devicetree/bindings/
Dxilinx.txt10 Each IP-core has a set of parameters which the FPGA designer can use to
20 properties of the device node. In general, device nodes for IP-cores
23 (name): (generic-name)@(base-address) {
24 compatible = "xlnx,(ip-core-name)-(HW_VER)"
27 interrupt-parent = <&interrupt-controller-phandle>;
29 xlnx,(parameter1) = "(string-value)";
30 xlnx,(parameter2) = <(int-value)>;
33 (generic-name): an open firmware-style name that describes the
36 (ip-core-name): the name of the ip block (given after the BEGIN
38 and all underscores '_' converted to dashes '-'.
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/linux-6.12.1/arch/arm/boot/dts/allwinner/
Dsun5i-a10s.dtsi4 * Maxime Ripard <maxime.ripard@free-electrons.com>
6 * This file is dual-licensed: you can use it either under the terms
47 #include <dt-bindings/dma/sun4i-a10.h>
55 #address-cells = <1>;
56 #size-cells = <1>;
59 framebuffer-lcd0-hdmi {
60 compatible = "allwinner,simple-framebuffer",
61 "simple-framebuffer";
62 allwinner,pipeline = "de_be0-lcd0-hdmi";
70 display-engine {
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Dsun4i-a10.dtsi5 * This file is dual-licensed: you can use it either under the terms
44 #include <dt-bindings/thermal/thermal.h>
45 #include <dt-bindings/dma/sun4i-a10.h>
46 #include <dt-bindings/clock/sun4i-a10-ccu.h>
47 #include <dt-bindings/reset/sun4i-a10-ccu.h>
50 #address-cells = <1>;
51 #size-cells = <1>;
52 interrupt-parent = <&intc>;
59 #address-cells = <1>;
60 #size-cells = <1>;
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Dsun5i.dtsi2 * Copyright 2012-2015 Maxime Ripard
4 * Maxime Ripard <maxime.ripard@free-electrons.com>
6 * This file is dual-licensed: you can use it either under the terms
45 #include <dt-bindings/clock/sun5i-ccu.h>
46 #include <dt-bindings/dma/sun4i-a10.h>
47 #include <dt-bindings/reset/sun5i-ccu.h>
50 interrupt-parent = <&intc>;
51 #address-cells = <1>;
52 #size-cells = <1>;
55 #address-cells = <1>;
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/linux-6.12.1/arch/arm64/boot/dts/qcom/
Dsdm845-lg-judyp.dts1 // SPDX-License-Identifier: GPL-2.0
8 /dts-v1/;
10 #include "sdm845-lg-common.dtsi"
17 framebuffer@9d400000 {
18 compatible = "simple-framebuffer";
29 firmware-name = "qcom/sdm845/judyp/adsp.mbn";
33 firmware-name = "qcom/sdm845/judyp/cdsp.mbn";
37 zap-shader {
38 firmware-name = "qcom/sdm845/judyp/a630_zap.mbn";
43 firmware-name = "qcom/sdm845/judyp/mba.mbn", "qcom/sdm845/judyp/modem.mbn";
Dsdm845-lg-judyln.dts1 // SPDX-License-Identifier: GPL-2.0
8 /dts-v1/;
10 #include "sdm845-lg-common.dtsi"
17 framebuffer@9d400000 {
18 compatible = "simple-framebuffer";
24 lab-supply = <&lab>;
25 ibb-supply = <&ibb>;
30 gpio-keys {
31 pinctrl-0 = <&vol_up_pin_a &thinq_key_default>;
33 key-thinq {
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/linux-6.12.1/drivers/video/fbdev/
Dsimplefb.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Simplest possible simple frame-buffer driver, as a platform device
8 * Copyright (C) 2001 Richard Zidlicky <rz@linux-m68k.org>
32 .id = "simple",
39 .height = -1,
40 .width = -1,
50 u32 *pal = info->pseudo_palette; in simplefb_setcolreg()
51 u32 cr = red >> (16 - info->var.red.length); in simplefb_setcolreg()
52 u32 cg = green >> (16 - info->var.green.length); in simplefb_setcolreg()
53 u32 cb = blue >> (16 - info->var.blue.length); in simplefb_setcolreg()
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/linux-6.12.1/Documentation/fb/
Dudlfb.rst7 DisplayLink chips provide simple hline/blit operations with some compression,
8 pairing that with a hardware framebuffer (16MB) on the other end of the
9 USB wire. That hardware framebuffer is able to drive the VGA, DVI, or HDMI
13 result with a local shadow of the remote hardware framebuffer to identify
15 pixels line-by-line via USB bulk transfers.
18 does not require any acks - the effect is very low latency that
20 non-gaming and non-video applications.
23 setting is very flexible - able to set nearly arbitrary modes from any timing.
32 Advantages of supporting DisplayLink chips with kernel framebuffer interface:
35 one-to-one with the fbdev interface, making the driver quite small and
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Dframebuffer.rst9 ---------------
13 software to access the graphics hardware through a well-defined interface, so
14 the software doesn't need to know anything about the low-level (hardware
22 --------------------------
39 /dev/fb0current -> fb0
40 /dev/fb1current -> fb1
50 graphics card in addition to the built-in hardware. The corresponding frame
56 $FRAMEBUFFER to the path name of a frame buffer device, e.g. (for sh/bash
59 export FRAMEBUFFER=/dev/fb1
63 setenv FRAMEBUFFER /dev/fb1
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/linux-6.12.1/arch/mips/n64/
Dinit.c1 // SPDX-License-Identifier: GPL-2.0
23 * System-specifc irq names for clarity
95 res[0].end = MI_REG_BASE + NUM_MI_REGS * 4 - 1; in n64_platform_init()
99 res[1].end = AI_REG_BASE + NUM_AI_REGS * 4 - 1; in n64_platform_init()
105 platform_device_register_simple("n64audio", -1, res, 3); in n64_platform_init()
110 res[0].end = PI_REG_BASE + NUM_PI_REGS * 4 - 1; in n64_platform_init()
112 platform_device_register_simple("n64cart", -1, res, 1); in n64_platform_init()
117 res[0].end = SI_REG_BASE + NUM_SI_REGS * 4 - 1; in n64_platform_init()
119 platform_device_register_simple("n64joy", -1, res, 1); in n64_platform_init()
121 /* The framebuffer needs 64-byte alignment */ in n64_platform_init()
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/linux-6.12.1/samples/vfio-mdev/
Dmdpy-defs.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Simple pci display device.
5 * Framebuffer memory is pci bar 0.
6 * Configuration (read-only) is in pci config space.
/linux-6.12.1/arch/arm64/boot/dts/socionext/
Duniphier-ld20-akebi96.dts1 // SPDX-License-Identifier: GPL-2.0+ OR MIT
5 // Derived from uniphier-ld20-global.dts.
7 // Copyright (C) 2015-2017 Socionext Inc.
8 // Copyright (C) 2019-2020 Linaro Ltd.
10 /dts-v1/;
11 #include <dt-bindings/gpio/uniphier-gpio.h>
12 #include "uniphier-ld20.dtsi"
16 compatible = "socionext,uniphier-ld20-akebi96",
17 "socionext,uniphier-ld20";
20 stdout-path = "serial0:115200n8";
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