| /Linux-v5.4/Documentation/devicetree/bindings/i2c/ |
| D | i2c-mux-pinctrl.txt | 1 Pinctrl-based I2C Bus Mux
3 This binding describes an I2C bus multiplexer that uses pin multiplexing to
4 route the I2C signals, and represents the pin multiplexing configuration
7 +-----+ +-----+
9 +------------------------+ +-----+ +-----+
11 | /----|------+--------+
12 | +---+ +------+ | child bus A, on first set of pins
13 | |I2C|---|Pinmux| |
14 | +---+ +------+ | child bus B, on second set of pins
15 | \----|------+--------+--------+
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| /Linux-v5.4/drivers/gpu/drm/bridge/ |
| D | dumb-vga-dac.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2015-2016 Free Electrons
4 * Copyright (C) 2015-2016 NextThing Co
6 * Maxime Ripard <maxime.ripard@free-electrons.com>
23 struct i2c_adapter *ddc; member
45 if (!vga->ddc) in dumb_vga_get_modes()
48 edid = drm_get_edid(connector, vga->ddc); in dumb_vga_get_modes()
61 * In case we cannot retrieve the EDIDs (broken or missing i2c in dumb_vga_get_modes()
62 * bus), fallback on the XGA standards in dumb_vga_get_modes()
82 * Even if we have an I2C bus, we can't assume that the cable in dumb_vga_connector_detect()
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| D | ti-tfp410.c | 1 // SPDX-License-Identifier: GPL-2.0-only
10 #include <linux/i2c.h>
29 struct i2c_adapter *ddc; member
58 if (!dvi->ddc) in tfp410_get_modes()
61 edid = drm_get_edid(connector, dvi->ddc); in tfp410_get_modes()
94 if (dvi->hpd) { in tfp410_connector_detect()
95 if (gpiod_get_value_cansleep(dvi->hpd)) in tfp410_connector_detect()
101 if (dvi->ddc) { in tfp410_connector_detect()
102 if (drm_probe_ddc(dvi->ddc)) in tfp410_connector_detect()
125 if (!bridge->encoder) { in tfp410_attach()
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| /Linux-v5.4/drivers/video/fbdev/matrox/ |
| D | i2c-matroxfb.c | 1 // SPDX-License-Identifier: GPL-2.0-only
6 * (c) 1998-2002 Petr Vandrovec <vandrove@vc.cvut.cz>
16 #include <linux/i2c.h>
18 #include <linux/i2c-algo-bit.h>
20 /* MGA-TVO I2C for G200, G400 */
23 /* primary head DDC for Mystique(?), G100, G200, G400 */
26 /* primary head DDC for Millennium, Millennium II */
29 /* secondary head DDC for G400 */
63 /* software I2C functions */
74 matroxfb_i2c_set(b->minfo, b->mask.data, state); in matroxfb_gpio_setsda()
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| /Linux-v5.4/Documentation/devicetree/bindings/display/mediatek/ |
| D | mediatek,hdmi.txt | 8 - compatible: Should be "mediatek,<chip>-hdmi".
9 - reg: Physical base address and length of the controller's registers
10 - interrupts: The interrupt signal from the function block.
11 - clocks: device clocks
12 See Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
13 - clock-names: must contain "pixel", "pll", "bclk", and "spdif".
14 - phys: phandle link to the HDMI PHY node.
15 See Documentation/devicetree/bindings/phy/phy-bindings.txt for details.
16 - phy-names: must contain "hdmi"
17 - mediatek,syscon-hdmi: phandle link and register offset to the system
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| /Linux-v5.4/Documentation/devicetree/bindings/display/connector/ |
| D | vga-connector.txt | 6 - compatible: "vga-connector"
10 - label: a symbolic name for the connector corresponding to a hardware label
11 - ddc-i2c-bus: phandle to the I2C bus that is connected to VGA DDC
23 -------
26 compatible = "vga-connector";
29 ddc-i2c-bus = <&i2c3>;
33 remote-endpoint = <&adv7123_out>;
|
| D | dvi-connector.txt | 5 - compatible: "dvi-connector"
8 - label: a symbolic name for the connector
9 - ddc-i2c-bus: phandle to the i2c bus that is connected to DVI DDC
10 - analog: the connector has DVI analog pins
11 - digital: the connector has DVI digital pins
12 - dual-link: the connector has pins for DVI dual-link
13 - hpd-gpios: HPD GPIO number
16 - Video port for DVI input
21 -------
24 compatible = "dvi-connector";
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| D | hdmi-connector.txt | 5 - compatible: "hdmi-connector"
6 - type: the HDMI connector type: "a", "b", "c", "d" or "e"
9 - label: a symbolic name for the connector
10 - hpd-gpios: HPD GPIO number
11 - ddc-i2c-bus: phandle link to the I2C controller used for DDC EDID probing
12 - ddc-en-gpios: signal to enable DDC bus
15 - Video port for HDMI input
18 -------
21 compatible = "hdmi-connector";
28 remote-endpoint = <&tpd12s015_out>;
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| /Linux-v5.4/Documentation/devicetree/bindings/display/imx/ |
| D | hdmi.txt | 9 following device-specific properties.
14 - compatible : Shall be one of "fsl,imx6q-hdmi" or "fsl,imx6dl-hdmi".
15 - reg: See dw_hdmi.txt.
16 - interrupts: HDMI interrupt number
17 - clocks: See dw_hdmi.txt.
18 - clock-names: Shall contain "iahb" and "isfr" as defined in dw_hdmi.txt.
19 - ports: See dw_hdmi.txt. The DWC HDMI shall have between one and four ports,
22 - gpr : Shall contain a phandle to the iomuxc-gpr region containing the HDMI
27 - ddc-i2c-bus: The HDMI DDC bus can be connected to either a system I2C master
28 or the functionally-reduced I2C master contained in the DWC HDMI. When
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| /Linux-v5.4/drivers/gpu/drm/ |
| D | drm_dp_dual_mode_helper.c | 26 #include <linux/i2c.h>
39 * Adaptor registers (if any) and the sink DDC bus may be accessed via I2C.
42 * Adaptor registers and sink DDC bus can be accessed either via I2C or
43 * I2C-over-AUX. Source devices may choose to implement either of these
50 * drm_dp_dual_mode_read - Read from the DP dual mode adaptor register(s)
51 * @adapter: I2C adapter for the DDC bus
85 return -EPROTO; in drm_dp_dual_mode_read()
92 * drm_dp_dual_mode_write - Write to the DP dual mode adaptor register(s)
93 * @adapter: I2C adapter for the DDC bus
118 return -ENOMEM; in drm_dp_dual_mode_write()
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| /Linux-v5.4/Documentation/devicetree/bindings/display/rockchip/ |
| D | dw_hdmi-rockchip.txt | 9 following device-specific properties.
14 - compatible: should be one of the following:
15 "rockchip,rk3228-dw-hdmi"
16 "rockchip,rk3288-dw-hdmi"
17 "rockchip,rk3328-dw-hdmi"
18 "rockchip,rk3399-dw-hdmi"
19 - reg: See dw_hdmi.txt.
20 - reg-io-width: See dw_hdmi.txt. Shall be 4.
21 - interrupts: HDMI interrupt number
22 - clocks: See dw_hdmi.txt.
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| /Linux-v5.4/arch/arm/boot/dts/ |
| D | tegra20-tamonten.dtsi | 1 // SPDX-License-Identifier: GPL-2.0
9 rtc0 = "/i2c@7000d000/tps6586x@34";
15 stdout-path = "serial0:115200n8";
24 vdd-supply = <&hdmi_vdd_reg>;
25 pll-supply = <&hdmi_pll_reg>;
27 nvidia,ddc-i2c-bus = <&hdmi_ddc>;
28 nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7)
34 pinctrl-names = "default";
35 pinctrl-0 = <&state_default>;
212 nvidia,pins = "ddc", "dta", "dtd", "kbca",
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| D | tegra20-ventana.dts | 1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/input.h>
12 rtc0 = "/i2c@7000d000/tps6586x@34";
18 stdout-path = "serial0:115200n8";
37 vdd-supply = <&hdmi_vdd_reg>;
38 pll-supply = <&hdmi_pll_reg>;
40 nvidia,ddc-i2c-bus = <&hdmi_ddc>;
41 nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7)
47 pinctrl-names = "default";
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| D | tegra20-seaboard.dts | 1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/input.h>
12 rtc0 = "/i2c@7000d000/tps6586x@34";
18 stdout-path = "serial0:115200n8";
37 vdd-supply = <&hdmi_vdd_reg>;
38 pll-supply = <&hdmi_pll_reg>;
39 hdmi-supply = <&vdd_hdmi>;
41 nvidia,ddc-i2c-bus = <&hdmi_ddc>;
42 nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7)
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| D | tegra20-paz00.dts | 1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/input.h>
12 rtc0 = "/i2c@7000d000/tps6586x@34";
19 stdout-path = "serial0:115200n8";
38 vdd-supply = <&hdmi_vdd_reg>;
39 pll-supply = <&hdmi_pll_reg>;
41 nvidia,ddc-i2c-bus = <&hdmi_ddc>;
42 nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7)
48 pinctrl-names = "default";
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| D | tegra20-trimslice.dts | 1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/input.h>
12 rtc0 = "/i2c@7000c500/rtc@56";
18 stdout-path = "serial0:115200n8";
29 vdd-supply = <&hdmi_vdd_reg>;
30 pll-supply = <&hdmi_pll_reg>;
32 nvidia,ddc-i2c-bus = <&hdmi_ddc>;
33 nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7)
39 pinctrl-names = "default";
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| /Linux-v5.4/Documentation/devicetree/bindings/display/tegra/ |
| D | nvidia,tegra20-host1x.txt | 4 - compatible: "nvidia,tegra<chip>-host1x"
5 - reg: Physical base address and length of the controller's registers.
6 For pre-Tegra186, one entry describing the whole register area.
7 For Tegra186, one entry for each entry in reg-names:
8 "vm" - VM region assigned to Linux
9 "hypervisor" - Hypervisor region (only if Linux acts as hypervisor)
10 - interrupts: The interrupt outputs from the controller.
11 - #address-cells: The number of cells used to represent physical base addresses
13 - #size-cells: The number of cells used to represent the size of an address
15 - ranges: The mapping of the host1x address space to the CPU address space.
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| /Linux-v5.4/drivers/gpu/drm/zte/ |
| D | zx_vga.c | 1 // SPDX-License-Identifier: GPL-2.0-only
36 struct zx_vga_i2c *ddc; member
50 struct zx_vga_pwrctrl *pwrctrl = &vga->pwrctrl; in zx_vga_encoder_enable()
53 regmap_update_bits(pwrctrl->regmap, pwrctrl->reg, pwrctrl->mask, in zx_vga_encoder_enable()
54 pwrctrl->mask); in zx_vga_encoder_enable()
56 vou_inf_enable(VOU_VGA, encoder->crtc); in zx_vga_encoder_enable()
62 struct zx_vga_pwrctrl *pwrctrl = &vga->pwrctrl; in zx_vga_encoder_disable()
64 vou_inf_disable(VOU_VGA, encoder->crtc); in zx_vga_encoder_disable()
67 regmap_update_bits(pwrctrl->regmap, pwrctrl->reg, pwrctrl->mask, 0); in zx_vga_encoder_disable()
86 * Clear both detection bits to switch I2C bus from device in zx_vga_connector_get_modes()
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| /Linux-v5.4/drivers/gpu/drm/mediatek/ |
| D | mtk_hdmi_ddc.c | 1 // SPDX-License-Identifier: GPL-2.0-only
8 #include <linux/i2c.h>
62 static inline void sif_set_bit(struct mtk_hdmi_ddc *ddc, unsigned int offset, in sif_set_bit() argument
65 writel(readl(ddc->regs + offset) | val, ddc->regs + offset); in sif_set_bit()
68 static inline void sif_clr_bit(struct mtk_hdmi_ddc *ddc, unsigned int offset, in sif_clr_bit() argument
71 writel(readl(ddc->regs + offset) & ~val, ddc->regs + offset); in sif_clr_bit()
74 static inline bool sif_bit_is_set(struct mtk_hdmi_ddc *ddc, unsigned int offset, in sif_bit_is_set() argument
77 return (readl(ddc->regs + offset) & val) == val; in sif_bit_is_set()
80 static inline void sif_write_mask(struct mtk_hdmi_ddc *ddc, unsigned int offset, in sif_write_mask() argument
86 tmp = readl(ddc->regs + offset); in sif_write_mask()
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| /Linux-v5.4/Documentation/devicetree/bindings/display/panel/ |
| D | panel-common.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/display/panel/panel-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
24 width-mm:
29 height-mm:
43 non-descriptive information. For instance an LCD panel in a system that
52 - $ref: /schemas/types.yaml#/definitions/uint32
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| /Linux-v5.4/drivers/gpu/drm/gma500/ |
| D | cdv_intel_lvds.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright © 2006-2011 Intel Corporation
12 #include <linux/i2c.h>
23 * LVDS I2C backlight control macros
58 struct drm_psb_private *dev_priv = dev->dev_private; in cdv_intel_lvds_get_max_backlight()
68 retval = ((dev_priv->regs.saveBLC_PWM_CTL & in cdv_intel_lvds_get_max_backlight()
77 * Set LVDS backlight level by I2C command
82 struct drm_psb_private *dev_priv = dev->dev_private;
83 struct psb_intel_i2c_chan *lvds_i2c_bus = dev_priv->lvds_i2c_bus;
89 .addr = lvds_i2c_bus->slave_addr,
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| D | psb_intel_lvds.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright © 2006-2007 Intel Corporation
11 #include <linux/i2c.h>
21 * LVDS I2C backlight control macros
60 struct drm_psb_private *dev_priv = dev->dev_private; in psb_intel_lvds_get_max_backlight()
67 ret = dev_priv->regs.saveBLC_PWM_CTL; in psb_intel_lvds_get_max_backlight()
75 dev_err(dev->dev, "BL bug: Reg %08x save %08X\n", in psb_intel_lvds_get_max_backlight()
76 REG_READ(BLC_PWM_CTL), dev_priv->regs.saveBLC_PWM_CTL); in psb_intel_lvds_get_max_backlight()
81 * Set LVDS backlight level by I2C command
90 (struct drm_psb_private *)dev->dev_private; in psb_lvds_i2c_set_brightness()
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| /Linux-v5.4/drivers/gpu/drm/amd/amdgpu/ |
| D | amdgpu_connectors.c | 2 * Copyright 2007-8 Advanced Micro Devices, Inc.
43 struct drm_device *dev = connector->dev; in amdgpu_connector_hotplug()
44 struct amdgpu_device *adev = dev->dev_private; in amdgpu_connector_hotplug()
50 if (amdgpu_connector->hpd.hpd == AMDGPU_HPD_NONE) in amdgpu_connector_hotplug()
53 amdgpu_display_hpd_set_polarity(adev, amdgpu_connector->hpd.hpd); in amdgpu_connector_hotplug()
56 if (connector->dpms != DRM_MODE_DPMS_ON) in amdgpu_connector_hotplug()
60 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { in amdgpu_connector_hotplug()
62 amdgpu_connector->con_priv; in amdgpu_connector_hotplug()
65 if (dig_connector->dp_sink_type != CONNECTOR_OBJECT_ID_DISPLAYPORT) in amdgpu_connector_hotplug()
69 dig_connector->dp_sink_type = amdgpu_atombios_dp_get_sinktype(amdgpu_connector); in amdgpu_connector_hotplug()
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| /Linux-v5.4/drivers/gpu/drm/radeon/ |
| D | radeon_connectors.c | 2 * Copyright 2007-8 Advanced Micro Devices, Inc.
46 if (ret == -EINVAL) in radeon_dp_handle_hpd()
52 struct drm_device *dev = connector->dev; in radeon_connector_hotplug()
53 struct radeon_device *rdev = dev->dev_private; in radeon_connector_hotplug()
56 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { in radeon_connector_hotplug()
58 radeon_connector->con_priv; in radeon_connector_hotplug()
60 if (radeon_connector->is_mst_connector) in radeon_connector_hotplug()
62 if (dig_connector->is_mst) { in radeon_connector_hotplug()
70 if (radeon_connector->hpd.hpd == RADEON_HPD_NONE) in radeon_connector_hotplug()
73 radeon_hpd_set_polarity(rdev, radeon_connector->hpd.hpd); in radeon_connector_hotplug()
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| /Linux-v5.4/drivers/gpu/drm/bridge/synopsys/ |
| D | dw-hdmi.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * DesignWare High-Definition Multimedia Interface (HDMI) driver
5 * Copyright (C) 2013-2015 Mentor Graphics Inc.
6 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
19 #include <linux/dma-mapping.h>
22 #include <media/cec-notifier.h>
24 #include <uapi/linux/media-bus-format.h>
35 #include "dw-hdmi-audio.h"
36 #include "dw-hdmi-cec.h"
37 #include "dw-hdmi.h"
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