| /linux-6.12.1/Documentation/devicetree/bindings/i2c/ |
| D | i2c-mux-pinctrl.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-mux-pinctrl.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Pinctrl-based I2C Bus Mux
10 - Wolfram Sang <wsa@kernel.org>
13 This binding describes an I2C bus multiplexer that uses pin multiplexing to route the I2C
17 +-----+ +-----+
19 +------------------------+ +-----+ +-----+
21 | /----|------+--------+
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| /linux-6.12.1/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-6.12.1/drivers/gpu/drm/bridge/ |
| D | display-connector.c | 1 // SPDX-License-Identifier: GPL-2.0
7 #include <linux/i2c.h>
9 #include <linux/media-bus-format.h>
39 return flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR ? 0 : -EINVAL; in display_connector_attach()
47 if (conn->hpd_gpio) { in display_connector_detect()
48 if (gpiod_get_value_cansleep(conn->hpd_gpio)) in display_connector_detect()
54 if (conn->bridge.ddc && drm_probe_ddc(conn->bridge.ddc)) in display_connector_detect()
57 switch (conn->bridge.type) { in display_connector_detect()
64 * For DVI and HDMI connectors a DDC probe failure indicates in display_connector_detect()
74 * Composite and S-Video connectors have no other detection in display_connector_detect()
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| /linux-6.12.1/Documentation/devicetree/bindings/display/bridge/ |
| D | synopsys,dw-hdmi.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/display/bridge/synopsys,dw-hdmi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
16 bindings for the platform-specific integrations of the DWC HDMI TX.
26 reg-io-width:
36 - description: The bus clock for either AHB and APB
37 - description: The internal register configuration clock
40 clock-names:
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| /linux-6.12.1/Documentation/devicetree/bindings/display/tegra/ |
| D | nvidia,tegra20-hdmi.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/display/tegra/nvidia,tegra20-hdmi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
15 pattern: "^hdmi@[0-9a-f]+$"
19 - enum:
20 - nvidia,tegra20-hdmi
21 - nvidia,tegra30-hdmi
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| D | nvidia,tegra124-sor.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/display/tegra/nvidia,tegra124-sor.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
19 pattern: "^sor@[0-9a-f]+$"
23 - enum:
24 - nvidia,tegra124-sor
25 - nvidia,tegra210-sor
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| /linux-6.12.1/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-6.12.1/drivers/gpu/drm/display/ |
| 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
69 * As sub-addressing is not supported by all adaptors, in drm_dp_dual_mode_read()
94 return -ENOMEM; in drm_dp_dual_mode_read()
108 return -EPROTO; in drm_dp_dual_mode_read()
115 * drm_dp_dual_mode_write - Write to the DP dual mode adaptor register(s)
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| /linux-6.12.1/drivers/gpu/drm/mgag200/ |
| D | mgag200_ddc.c | 14 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
30 #include <linux/i2c-algo-bit.h>
31 #include <linux/i2c.h>
76 struct mgag200_ddc *ddc = data; in mgag200_ddc_algo_bit_data_setsda() local
78 mga_i2c_set(ddc->mdev, ddc->data, state); in mgag200_ddc_algo_bit_data_setsda()
83 struct mgag200_ddc *ddc = data; in mgag200_ddc_algo_bit_data_setscl() local
85 mga_i2c_set(ddc->mdev, ddc->clock, state); in mgag200_ddc_algo_bit_data_setscl()
90 struct mgag200_ddc *ddc = data; in mgag200_ddc_algo_bit_data_getsda() local
92 return (mga_i2c_read_gpio(ddc->mdev) & ddc->data) ? 1 : 0; in mgag200_ddc_algo_bit_data_getsda()
97 struct mgag200_ddc *ddc = data; in mgag200_ddc_algo_bit_data_getscl() local
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| /linux-6.12.1/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-6.12.1/drivers/gpu/drm/mediatek/ |
| D | mtk_hdmi_ddc.c | 1 // SPDX-License-Identifier: GPL-2.0-only
8 #include <linux/i2c.h>
65 static inline void sif_set_bit(struct mtk_hdmi_ddc *ddc, unsigned int offset, in sif_set_bit() argument
68 writel(readl(ddc->regs + offset) | val, ddc->regs + offset); in sif_set_bit()
71 static inline void sif_clr_bit(struct mtk_hdmi_ddc *ddc, unsigned int offset, in sif_clr_bit() argument
74 writel(readl(ddc->regs + offset) & ~val, ddc->regs + offset); in sif_clr_bit()
77 static inline bool sif_bit_is_set(struct mtk_hdmi_ddc *ddc, unsigned int offset, in sif_bit_is_set() argument
80 return (readl(ddc->regs + offset) & val) == val; in sif_bit_is_set()
83 static inline void sif_write_mask(struct mtk_hdmi_ddc *ddc, unsigned int offset, in sif_write_mask() argument
89 tmp = readl(ddc->regs + offset); in sif_write_mask()
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| /linux-6.12.1/drivers/gpu/drm/ast/ |
| D | ast_ddc.c | 1 // SPDX-License-Identifier: MIT
13 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
24 #include <linux/i2c-algo-bit.h>
25 #include <linux/i2c.h>
42 struct ast_ddc *ddc = data; in ast_ddc_algo_bit_data_setsda() local
43 struct ast_device *ast = ddc->ast; in ast_ddc_algo_bit_data_setsda()
58 struct ast_ddc *ddc = data; in ast_ddc_algo_bit_data_setscl() local
59 struct ast_device *ast = ddc->ast; in ast_ddc_algo_bit_data_setscl()
74 struct ast_ddc *ddc = i2c_get_adapdata(adapter); in ast_ddc_algo_bit_data_pre_xfer() local
75 struct ast_device *ast = ddc->ast; in ast_ddc_algo_bit_data_pre_xfer()
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| /linux-6.12.1/arch/arm/boot/dts/nvidia/ |
| 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)
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| /linux-6.12.1/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-6.12.1/drivers/gpu/drm/radeon/ |
| D | radeon_connectors.c | 2 * Copyright 2007-8 Advanced Micro Devices, Inc.
42 struct drm_device *dev = connector->dev; in radeon_connector_hotplug()
43 struct radeon_device *rdev = dev->dev_private; in radeon_connector_hotplug()
49 if (radeon_connector->hpd.hpd == RADEON_HPD_NONE) in radeon_connector_hotplug()
52 radeon_hpd_set_polarity(rdev, radeon_connector->hpd.hpd); in radeon_connector_hotplug()
56 if (connector->dpms != DRM_MODE_DPMS_ON) in radeon_connector_hotplug()
60 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { in radeon_connector_hotplug()
62 radeon_connector->con_priv; in radeon_connector_hotplug()
65 if (dig_connector->dp_sink_type != CONNECTOR_OBJECT_ID_DISPLAYPORT) in radeon_connector_hotplug()
69 dig_connector->dp_sink_type = radeon_dp_getsinktype(radeon_connector); in radeon_connector_hotplug()
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| /linux-6.12.1/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>
25 * LVDS I2C backlight control macros
70 ret = dev_priv->regs.saveBLC_PWM_CTL; in psb_intel_lvds_get_max_backlight()
78 dev_err(dev->dev, "BL bug: Reg %08x save %08X\n", in psb_intel_lvds_get_max_backlight()
79 REG_READ(BLC_PWM_CTL), dev_priv->regs.saveBLC_PWM_CTL); in psb_intel_lvds_get_max_backlight()
84 * Set LVDS backlight level by I2C command
94 struct gma_i2c_chan *lvds_i2c_bus = dev_priv->lvds_i2c_bus; in psb_lvds_i2c_set_brightness()
100 .addr = lvds_i2c_bus->target_addr, 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>
27 * LVDS I2C backlight control macros
72 retval = ((dev_priv->regs.saveBLC_PWM_CTL & in cdv_intel_lvds_get_max_backlight()
97 blc_pwm_ctl = dev_priv->regs.saveBLC_PWM_CTL & in cdv_intel_lvds_set_backlight()
99 dev_priv->regs.saveBLC_PWM_CTL = (blc_pwm_ctl | in cdv_intel_lvds_set_backlight()
124 dev_priv->mode_dev.backlight_duty_cycle); in cdv_intel_lvds_set_power()
139 struct drm_device *dev = encoder->dev; in cdv_intel_lvds_encoder_dpms()
158 struct drm_device *dev = connector->dev; in cdv_intel_lvds_mode_valid()
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| /linux-6.12.1/drivers/gpu/drm/amd/amdgpu/ |
| D | amdgpu_connectors.c | 2 * Copyright 2007-8 Advanced Micro Devices, Inc.
45 struct drm_device *dev = connector->dev; in amdgpu_connector_hotplug()
52 if (amdgpu_connector->hpd.hpd == AMDGPU_HPD_NONE) in amdgpu_connector_hotplug()
55 amdgpu_display_hpd_set_polarity(adev, amdgpu_connector->hpd.hpd); in amdgpu_connector_hotplug()
58 if (connector->dpms != DRM_MODE_DPMS_ON) in amdgpu_connector_hotplug()
62 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort) { in amdgpu_connector_hotplug()
64 amdgpu_connector->con_priv; in amdgpu_connector_hotplug()
67 if (dig_connector->dp_sink_type != CONNECTOR_OBJECT_ID_DISPLAYPORT) in amdgpu_connector_hotplug()
71 dig_connector->dp_sink_type = amdgpu_atombios_dp_get_sinktype(amdgpu_connector); in amdgpu_connector_hotplug()
73 * passive dp->(dvi|hdmi) adaptor in amdgpu_connector_hotplug()
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| /linux-6.12.1/drivers/video/fbdev/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
14 a well-defined interface, so the software doesn't need to know
15 anything about the low-level (hardware register) stuff.
21 On several non-X86 architectures, the frame buffer device is the
29 and the Framebuffer-HOWTO at
30 <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.
57 Common utility functions useful to fbdev drivers of VGA-based
82 If you have a PCI-based system, this enables support for these
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| /linux-6.12.1/drivers/gpu/drm/tegra/ |
| D | output.c | 1 // SPDX-License-Identifier: GPL-2.0-only
7 #include <linux/i2c.h>
19 #include <media/cec-notifier.h>
31 if (output->panel) { in tegra_output_connector_get_modes()
32 err = drm_panel_get_modes(output->panel, connector); in tegra_output_connector_get_modes()
37 if (output->drm_edid) in tegra_output_connector_get_modes()
38 drm_edid = drm_edid_dup(output->drm_edid); in tegra_output_connector_get_modes()
39 else if (output->ddc) in tegra_output_connector_get_modes()
40 drm_edid = drm_edid_read_ddc(connector, output->ddc); in tegra_output_connector_get_modes()
43 cec_notifier_set_phys_addr(output->cec, in tegra_output_connector_get_modes()
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| /linux-6.12.1/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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