| /Linux-v5.15/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-v5.15/Documentation/devicetree/bindings/display/rockchip/ |
| D | rockchip,dw-hdmi.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/display/rockchip/rockchip,dw-hdmi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Mark Yao <markyao0591@gmail.com>
17 - $ref: ../bridge/synopsys,dw-hdmi.yaml#
22 - rockchip,rk3228-dw-hdmi
23 - rockchip,rk3288-dw-hdmi
24 - rockchip,rk3328-dw-hdmi
25 - rockchip,rk3399-dw-hdmi
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| /Linux-v5.15/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-v5.15/drivers/gpu/drm/bridge/ |
| D | display-connector.c | 1 // SPDX-License-Identifier: GPL-2.0
7 #include <linux/i2c.h>
37 return flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR ? 0 : -EINVAL; in display_connector_attach()
45 if (conn->hpd_gpio) { in display_connector_detect()
46 if (gpiod_get_value_cansleep(conn->hpd_gpio)) in display_connector_detect()
52 if (conn->bridge.ddc && drm_probe_ddc(conn->bridge.ddc)) in display_connector_detect()
55 switch (conn->bridge.type) { in display_connector_detect()
62 * For DVI and HDMI connectors a DDC probe failure indicates in display_connector_detect()
72 * Composite and S-Video connectors have no other detection in display_connector_detect()
74 * an I2C bus, we can't assume that the cable is disconnected in display_connector_detect()
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| /Linux-v5.15/Documentation/devicetree/bindings/display/connector/ |
| D | vga-connector.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/display/connector/vga-connector.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
14 const: vga-connector
18 ddc-i2c-bus:
19 description: phandle link to the I2C controller used for DDC EDID probing
27 - compatible
28 - port
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| D | hdmi-connector.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/display/connector/hdmi-connector.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
14 const: hdmi-connector
19 - a # Standard full size
20 - b # Never deployed?
21 - c # Mini
22 - d # Micro
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| D | dvi-connector.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/display/connector/dvi-connector.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
14 const: dvi-connector
18 hpd-gpios:
22 ddc-i2c-bus:
23 description: phandle link to the I2C controller used for DDC EDID probing
34 dual-link:
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| /Linux-v5.15/drivers/gpu/drm/ |
| D | drm_dp_dual_mode_helper.c | 26 #include <linux/i2c.h>
40 * Adaptor registers (if any) and the sink DDC bus may be accessed via I2C.
43 * Adaptor registers and sink DDC bus can be accessed either via I2C or
44 * I2C-over-AUX. Source devices may choose to implement either of these
51 * drm_dp_dual_mode_read - Read from the DP dual mode adaptor register(s)
52 * @adapter: I2C adapter for the DDC bus
86 return -EPROTO; in drm_dp_dual_mode_read()
93 * drm_dp_dual_mode_write - Write to the DP dual mode adaptor register(s)
94 * @adapter: I2C adapter for the DDC bus
119 return -ENOMEM; in drm_dp_dual_mode_write()
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| /Linux-v5.15/drivers/gpu/drm/zte/ |
| D | zx_vga.c | 1 // SPDX-License-Identifier: GPL-2.0-only
37 struct zx_vga_i2c *ddc; member
51 struct zx_vga_pwrctrl *pwrctrl = &vga->pwrctrl; in zx_vga_encoder_enable()
54 regmap_update_bits(pwrctrl->regmap, pwrctrl->reg, pwrctrl->mask, in zx_vga_encoder_enable()
55 pwrctrl->mask); in zx_vga_encoder_enable()
57 vou_inf_enable(VOU_VGA, encoder->crtc); in zx_vga_encoder_enable()
63 struct zx_vga_pwrctrl *pwrctrl = &vga->pwrctrl; in zx_vga_encoder_disable()
65 vou_inf_disable(VOU_VGA, encoder->crtc); in zx_vga_encoder_disable()
68 regmap_update_bits(pwrctrl->regmap, pwrctrl->reg, pwrctrl->mask, 0); in zx_vga_encoder_disable()
83 * Clear both detection bits to switch I2C bus from device in zx_vga_connector_get_modes()
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| /Linux-v5.15/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
55 panel-timing:
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| /Linux-v5.15/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-v5.15/arch/arm/boot/dts/ |
| D | tegra20-ventana.dts | 1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/input.h>
5 #include <dt-bindings/thermal/thermal.h>
7 #include "tegra20-cpu-opp.dtsi"
8 #include "tegra20-cpu-opp-microvolt.dtsi"
15 rtc0 = "/i2c@7000d000/tps6586x@34";
21 stdout-path = "serial0:115200n8";
40 vdd-supply = <&hdmi_vdd_reg>;
41 pll-supply = <&hdmi_pll_reg>;
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| 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>;
213 nvidia,pins = "ddc", "dta", "dtd", "kbca",
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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)
[all …]
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| D | imx6dl-alti6p.dts | 1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
7 /dts-v1/;
8 #include <dt-bindings/gpio/gpio.h>
9 #include <dt-bindings/leds/common.h>
10 #include <dt-bindings/sound/fsl-imx-audmux.h>
18 stdout-path = &uart4;
21 clock_ksz8081: clock-ksz8081 {
22 compatible = "fixed-clock";
23 #clock-cells = <0>;
24 clock-frequency = <50000000>;
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| /Linux-v5.15/Documentation/devicetree/bindings/display/ |
| D | dp-aux-bus.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/display/dp-aux-bus.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: DisplayPort AUX bus
10 - Douglas Anderson <dianders@chromium.org>
14 are hooked up to them. This is the DP AUX bus. Over the DP AUX bus
16 particular, DP sinks support DDC over DP AUX which allows tunneling
17 a standard I2C DDC connection over the AUX channel.
20 of the DP controller under the "aux-bus" node.
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| /Linux-v5.15/Documentation/devicetree/bindings/display/imx/ |
| D | fsl,imx6-hdmi.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/display/imx/fsl,imx6-hdmi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Philipp Zabel <p.zabel@pengutronix.de>
17 - $ref: ../bridge/synopsys,dw-hdmi.yaml#
22 - fsl,imx6dl-hdmi
23 - fsl,imx6q-hdmi
25 reg-io-width:
31 clock-names:
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| /Linux-v5.15/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-v5.15/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-v5.15/drivers/gpu/drm/gma500/ |
| D | psb_intel_lvds.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright © 2006-2007 Intel Corporation
11 #include <linux/i2c.h>
23 * LVDS I2C backlight control macros
62 struct drm_psb_private *dev_priv = dev->dev_private; in psb_intel_lvds_get_max_backlight()
69 ret = dev_priv->regs.saveBLC_PWM_CTL; in psb_intel_lvds_get_max_backlight()
77 dev_err(dev->dev, "BL bug: Reg %08x save %08X\n", in psb_intel_lvds_get_max_backlight()
78 REG_READ(BLC_PWM_CTL), dev_priv->regs.saveBLC_PWM_CTL); in psb_intel_lvds_get_max_backlight()
83 * Set LVDS backlight level by I2C command
92 (struct drm_psb_private *)dev->dev_private; in psb_lvds_i2c_set_brightness()
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| D | cdv_intel_lvds.c | 1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright © 2006-2011 Intel Corporation
12 #include <linux/i2c.h>
25 * LVDS I2C backlight control macros
60 struct drm_psb_private *dev_priv = dev->dev_private; in cdv_intel_lvds_get_max_backlight()
70 retval = ((dev_priv->regs.saveBLC_PWM_CTL & in cdv_intel_lvds_get_max_backlight()
84 struct drm_psb_private *dev_priv = dev->dev_private; in cdv_intel_lvds_set_backlight()
95 blc_pwm_ctl = dev_priv->regs.saveBLC_PWM_CTL & in cdv_intel_lvds_set_backlight()
97 dev_priv->regs.saveBLC_PWM_CTL = (blc_pwm_ctl | in cdv_intel_lvds_set_backlight()
108 struct drm_psb_private *dev_priv = dev->dev_private; in cdv_intel_lvds_set_power()
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| D | psb_intel_sdvo.c | 3 * Copyright © 2006-2007 Intel Corporation
30 #include <linux/i2c.h>
51 #define IS_TV(c) (c->output_flag & SDVO_TV_MASK)
52 #define IS_TMDS(c) (c->output_flag & SDVO_TMDS_MASK)
53 #define IS_LVDS(c) (c->output_flag & SDVO_LVDS_MASK)
54 #define IS_TV_OR_LVDS(c) (c->output_flag & (SDVO_TV_MASK | SDVO_LVDS_MASK))
70 struct i2c_adapter *i2c; member
73 struct i2c_adapter ddc; member
103 * This is set if we're going to treat the device as TV-out.
106 * to decide this for us, the S-Video output on our HDMI+S-Video card
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| /Linux-v5.15/drivers/gpu/drm/amd/amdgpu/ |
| D | amdgpu_connectors.c | 2 * Copyright 2007-8 Advanced Micro Devices, Inc.
44 struct drm_device *dev = connector->dev; in amdgpu_connector_hotplug()
51 if (amdgpu_connector->hpd.hpd == AMDGPU_HPD_NONE) in amdgpu_connector_hotplug()
54 amdgpu_display_hpd_set_polarity(adev, amdgpu_connector->hpd.hpd); in amdgpu_connector_hotplug()
57 if (connector->dpms != DRM_MODE_DPMS_ON) in amdgpu_connector_hotplug()
61 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { in amdgpu_connector_hotplug()
63 amdgpu_connector->con_priv; in amdgpu_connector_hotplug()
66 if (dig_connector->dp_sink_type != CONNECTOR_OBJECT_ID_DISPLAYPORT) in amdgpu_connector_hotplug()
70 dig_connector->dp_sink_type = amdgpu_atombios_dp_get_sinktype(amdgpu_connector); in amdgpu_connector_hotplug()
72 * passive dp->(dvi|hdmi) adaptor in amdgpu_connector_hotplug()
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| /Linux-v5.15/drivers/video/fbdev/i810/ |
| D | i810-i2c.c | 1 /*-*- linux-c -*-
2 * linux/drivers/video/i810-i2c.c -- Intel 810/815 I2C support
45 struct i810fb_par *par = chan->par; in i810i2c_setscl()
46 u8 __iomem *mmio = par->mmio_start_virtual; in i810i2c_setscl()
49 i810_writel(mmio, chan->ddc_base, SCL_DIR_MASK | SCL_VAL_MASK); in i810i2c_setscl()
51 i810_writel(mmio, chan->ddc_base, SCL_DIR | SCL_DIR_MASK | SCL_VAL_MASK); in i810i2c_setscl()
52 i810_readl(mmio, chan->ddc_base); /* flush posted write */ in i810i2c_setscl()
58 struct i810fb_par *par = chan->par; in i810i2c_setsda()
59 u8 __iomem *mmio = par->mmio_start_virtual; in i810i2c_setsda()
62 i810_writel(mmio, chan->ddc_base, SDA_DIR_MASK | SDA_VAL_MASK); in i810i2c_setsda()
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| /Linux-v5.15/drivers/video/fbdev/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
20 a well-defined interface, so the software doesn't need to know
21 anything about the low-level (hardware register) stuff.
27 On several non-X86 architectures, the frame buffer device is the
35 and the Framebuffer-HOWTO at
36 <http://www.munted.org.uk/programming/Framebuffer-HOWTO-1.3.html> for more
40 are compiling a kernel for a non-x86 architecture.
46 device-aware may cause unexpected results. If unsure, say N.
53 On the i386, this is from the Video BIOS. Enable this if DDC/I2C
67 select I2C
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