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/Linux-v5.15/drivers/gpu/drm/mediatek/
Dmtk_hdmi_ddc.c1 // 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()
[all …]
/Linux-v5.15/Documentation/devicetree/bindings/display/mediatek/
Dmediatek,hdmi-ddc.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/display/mediatek/mediatek,hdmi-ddc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Mediatek HDMI DDC Device Tree Bindings
10 - CK Hu <ck.hu@mediatek.com>
11 - Jitao shi <jitao.shi@mediatek.com>
14 The HDMI DDC i2c controller is used to interface with the HDMI DDC pins.
19 - mediatek,mt7623-hdmi-ddc
20 - mediatek,mt8167-hdmi-ddc
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/Linux-v5.15/Documentation/devicetree/bindings/i2c/
Di2c-mux-pinctrl.txt1 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/drivers/video/fbdev/matrox/
Di2c-matroxfb.c1 // 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/amd/display/dc/dce/
Ddce_i2c_hw.c35 dce_i2c_hw->ctx
37 dce_i2c_hw->regs->reg
41 dce_i2c_hw->shifts->field_name, dce_i2c_hw->masks->field_name
59 DC_I2C_TRANSACTION_COUNT, dce_i2c_hw->transaction_count - 1); in execute_transaction()
61 /* start I2C transfer */ in execute_transaction()
67 dce_i2c_hw->transaction_count = 0; in execute_transaction()
68 dce_i2c_hw->buffer_used_bytes = 0; in execute_transaction()
80 else if (value & dce_i2c_hw->masks->DC_I2C_SW_STOPPED_ON_NACK) in get_channel_status()
82 else if (value & dce_i2c_hw->masks->DC_I2C_SW_TIMEOUT) in get_channel_status()
84 else if (value & dce_i2c_hw->masks->DC_I2C_SW_ABORTED) in get_channel_status()
[all …]
Ddce_i2c_sw.c38 dce_i2c_sw->ctx = ctx; in dce_i2c_sw_construct()
42 struct ddc *ddc, in read_bit_from_ddc() argument
48 dal_gpio_get_value(ddc->pin_data, &value); in read_bit_from_ddc()
50 dal_gpio_get_value(ddc->pin_clock, &value); in read_bit_from_ddc()
56 struct ddc *ddc, in write_bit_to_ddc() argument
63 dal_gpio_set_value(ddc->pin_data, value); in write_bit_to_ddc()
65 dal_gpio_set_value(ddc->pin_clock, value); in write_bit_to_ddc()
72 dal_ddc_close(dce_i2c_sw->ddc); in release_engine_dce_sw()
73 dce_i2c_sw->ddc = NULL; in release_engine_dce_sw()
78 struct ddc *ddc, in wait_for_scl_high_sw() argument
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/Linux-v5.15/Documentation/devicetree/bindings/display/rockchip/
Drockchip,dw-hdmi.yaml1 # 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/gpu/drm/bridge/
Ddisplay-connector.c1 // 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/drivers/gpu/drm/zte/
Dzx_vga.c1 // 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/drivers/gpu/drm/rockchip/
Drk3066_hdmi.c1 // SPDX-License-Identifier: GPL-2.0
4 * Zheng Yang <zhengyang@rock-chips.com>
37 struct mutex i2c_lock; /* For i2c operation. */
52 struct rk3066_hdmi_i2c *i2c; member
53 struct i2c_adapter *ddc; member
65 return readl_relaxed(hdmi->regs + offset); in hdmi_readb()
70 writel_relaxed(val, hdmi->regs + offset); in hdmi_writeb()
86 ddc_bus_freq = (hdmi->tmdsclk >> 2) / HDMI_SCL_RATE; in rk3066_hdmi_i2c_init()
108 DRM_DEV_DEBUG(hdmi->dev, "mode :%d\n", mode); in rk3066_hdmi_set_power_mode()
109 DRM_DEV_DEBUG(hdmi->dev, "current_mode :%d\n", current_mode); in rk3066_hdmi_set_power_mode()
[all …]
Dinno_hdmi.c1 // SPDX-License-Identifier: GPL-2.0-only
4 * Zheng Yang <zhengyang@rock-chips.com>
5 * Yakir Yang <ykk@rock-chips.com>
61 struct inno_hdmi_i2c *i2c; member
62 struct i2c_adapter *ddc; member
82 * R = 1.164*Y + 1.596*V - 204
83 * G = 1.164*Y - 0.391*U - 0.813*V + 154
84 * B = 1.164*Y + 2.018*U - 258
93 * R = Y + 1.402*V - 248
94 * G = Y - 0.344*U - 0.714*V + 135
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/Linux-v5.15/Documentation/devicetree/bindings/display/connector/
Dvga-connector.yaml1 # 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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Dhdmi-connector.yaml1 # 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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Ddvi-connector.yaml1 # 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:
[all …]
/Linux-v5.15/arch/arm/boot/dts/
Dtegra20-tamonten.dtsi1 // 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",
[all …]
Dtegra20-ventana.dts1 // 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>;
[all …]
Dtegra20-seaboard.dts1 // 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 …]
/Linux-v5.15/drivers/gpu/drm/amd/display/dc/gpio/
Dhw_ddc.c2 * Copyright 2012-15 Advanced Micro Devices, Inc.
42 ddc->shifts->field_name, ddc->masks->field_name
45 ddc->base.base.ctx
47 (ddc->regs->reg)
54 dal_hw_gpio_destruct(&pin->base); in dal_hw_ddc_destruct()
73 struct hw_ddc *ddc = HW_DDC_FROM_BASE(ptr); in set_config() local
80 hw_gpio = &ddc->base; in set_config()
92 switch (config_data->config.ddc.type) { in set_config()
94 /* On plug-in, there is a transient level on the pad in set_config()
95 * which must be discharged through the internal pull-down. in set_config()
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/Linux-v5.15/drivers/gpu/drm/
Ddrm_dp_dual_mode_helper.c26 #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()
[all …]
/Linux-v5.15/Documentation/devicetree/bindings/gnss/
Du-blox.txt1 u-blox GNSS Receiver DT binding
3 The u-blox GNSS receivers can use UART, DDC (I2C), SPI and USB interfaces.
10 - compatible : Must be one of
12 "u-blox,neo-6m"
13 "u-blox,neo-8"
14 "u-blox,neo-m8"
16 - vcc-supply : Main voltage regulator
18 Required properties (DDC):
19 - reg : DDC (I2C) slave address
22 - reg : SPI chip select address
[all …]
/Linux-v5.15/drivers/gpu/drm/amd/display/dc/core/
Ddc_link_ddc.c2 * Copyright 2012-15 Advanced Micro Devices, Inc.
55 /* DVI-HDMI dongle slave address for retrieving dongle signature*/
63 /* DP-HDMI dongle slave address for retrieving dongle signature*/
65 static const uint8_t dp_hdmi_dongle_signature_str[] = "DP-HDMI ADAPTOR";
69 int8_t id[15];/* "DP-HDMI ADAPTOR"*/
145 &payloads->payloads, ctx, count, sizeof(struct i2c_payload))) in dal_ddc_i2c_payloads_create()
153 return (struct i2c_payload *)p->payloads.container; in dal_ddc_i2c_payloads_get()
158 return p->payloads.count; in dal_ddc_i2c_payloads_get_count()
177 .length = DDC_MIN(payload_size, len - pos), in dal_ddc_i2c_payloads_add()
179 dal_vector_append(&payloads->payloads, &payload); in dal_ddc_i2c_payloads_add()
[all …]
/Linux-v5.15/drivers/gpu/drm/radeon/
Dradeon_connectors.c2 * 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()
[all …]
/Linux-v5.15/drivers/gpu/drm/amd/amdgpu/
Damdgpu_connectors.c2 * 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()
[all …]
/Linux-v5.15/Documentation/devicetree/bindings/display/panel/
Dpanel-common.yaml1 # 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:
[all …]
/Linux-v5.15/Documentation/devicetree/bindings/display/
Dbrcm,bcm2835-hdmi.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/display/brcm,bcm2835-hdmi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Eric Anholt <eric@anholt.net>
14 const: brcm,bcm2835-hdmi
18 - description: HDMI register range
19 - description: HD register range
26 - description: The pixel clock
27 - description: The HDMI state machine clock
[all …]

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