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121 lines
4.6 KiB
121 lines
4.6 KiB
/* |
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* Copyright © 2016 Intel Corporation |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a |
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* copy of this software and associated documentation files (the "Software"), |
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* to deal in the Software without restriction, including without limitation |
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* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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* and/or sell copies of the Software, and to permit persons to whom the |
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* Software is furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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* OTHER DEALINGS IN THE SOFTWARE. |
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*/ |
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#ifndef DRM_DP_DUAL_MODE_HELPER_H |
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#define DRM_DP_DUAL_MODE_HELPER_H |
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#include <linux/types.h> |
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/* |
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* Optional for type 1 DVI adaptors |
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* Mandatory for type 1 HDMI and type 2 adaptors |
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*/ |
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#define DP_DUAL_MODE_HDMI_ID 0x00 /* 00-0f */ |
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#define DP_DUAL_MODE_HDMI_ID_LEN 16 |
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/* |
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* Optional for type 1 adaptors |
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* Mandatory for type 2 adaptors |
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*/ |
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#define DP_DUAL_MODE_ADAPTOR_ID 0x10 |
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#define DP_DUAL_MODE_REV_MASK 0x07 |
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#define DP_DUAL_MODE_REV_TYPE2 0x00 |
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#define DP_DUAL_MODE_TYPE_MASK 0xf0 |
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#define DP_DUAL_MODE_TYPE_TYPE2 0xa0 |
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/* This field is marked reserved in dual mode spec, used in LSPCON */ |
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#define DP_DUAL_MODE_TYPE_HAS_DPCD 0x08 |
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#define DP_DUAL_MODE_IEEE_OUI 0x11 /* 11-13*/ |
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#define DP_DUAL_IEEE_OUI_LEN 3 |
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#define DP_DUAL_DEVICE_ID 0x14 /* 14-19 */ |
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#define DP_DUAL_DEVICE_ID_LEN 6 |
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#define DP_DUAL_MODE_HARDWARE_REV 0x1a |
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#define DP_DUAL_MODE_FIRMWARE_MAJOR_REV 0x1b |
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#define DP_DUAL_MODE_FIRMWARE_MINOR_REV 0x1c |
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#define DP_DUAL_MODE_MAX_TMDS_CLOCK 0x1d |
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#define DP_DUAL_MODE_I2C_SPEED_CAP 0x1e |
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#define DP_DUAL_MODE_TMDS_OEN 0x20 |
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#define DP_DUAL_MODE_TMDS_DISABLE 0x01 |
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#define DP_DUAL_MODE_HDMI_PIN_CTRL 0x21 |
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#define DP_DUAL_MODE_CEC_ENABLE 0x01 |
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#define DP_DUAL_MODE_I2C_SPEED_CTRL 0x22 |
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/* LSPCON specific registers, defined by MCA */ |
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#define DP_DUAL_MODE_LSPCON_MODE_CHANGE 0x40 |
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#define DP_DUAL_MODE_LSPCON_CURRENT_MODE 0x41 |
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#define DP_DUAL_MODE_LSPCON_MODE_PCON 0x1 |
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struct drm_device; |
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struct i2c_adapter; |
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ssize_t drm_dp_dual_mode_read(struct i2c_adapter *adapter, |
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u8 offset, void *buffer, size_t size); |
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ssize_t drm_dp_dual_mode_write(struct i2c_adapter *adapter, |
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u8 offset, const void *buffer, size_t size); |
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/** |
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* enum drm_lspcon_mode |
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* @DRM_LSPCON_MODE_INVALID: No LSPCON. |
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* @DRM_LSPCON_MODE_LS: Level shifter mode of LSPCON |
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* which drives DP++ to HDMI 1.4 conversion. |
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* @DRM_LSPCON_MODE_PCON: Protocol converter mode of LSPCON |
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* which drives DP++ to HDMI 2.0 active conversion. |
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*/ |
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enum drm_lspcon_mode { |
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DRM_LSPCON_MODE_INVALID, |
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DRM_LSPCON_MODE_LS, |
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DRM_LSPCON_MODE_PCON, |
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}; |
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/** |
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* enum drm_dp_dual_mode_type - Type of the DP dual mode adaptor |
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* @DRM_DP_DUAL_MODE_NONE: No DP dual mode adaptor |
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* @DRM_DP_DUAL_MODE_UNKNOWN: Could be either none or type 1 DVI adaptor |
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* @DRM_DP_DUAL_MODE_TYPE1_DVI: Type 1 DVI adaptor |
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* @DRM_DP_DUAL_MODE_TYPE1_HDMI: Type 1 HDMI adaptor |
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* @DRM_DP_DUAL_MODE_TYPE2_DVI: Type 2 DVI adaptor |
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* @DRM_DP_DUAL_MODE_TYPE2_HDMI: Type 2 HDMI adaptor |
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* @DRM_DP_DUAL_MODE_LSPCON: Level shifter / protocol converter |
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*/ |
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enum drm_dp_dual_mode_type { |
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DRM_DP_DUAL_MODE_NONE, |
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DRM_DP_DUAL_MODE_UNKNOWN, |
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DRM_DP_DUAL_MODE_TYPE1_DVI, |
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DRM_DP_DUAL_MODE_TYPE1_HDMI, |
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DRM_DP_DUAL_MODE_TYPE2_DVI, |
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DRM_DP_DUAL_MODE_TYPE2_HDMI, |
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DRM_DP_DUAL_MODE_LSPCON, |
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}; |
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enum drm_dp_dual_mode_type |
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drm_dp_dual_mode_detect(const struct drm_device *dev, struct i2c_adapter *adapter); |
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int drm_dp_dual_mode_max_tmds_clock(const struct drm_device *dev, enum drm_dp_dual_mode_type type, |
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struct i2c_adapter *adapter); |
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int drm_dp_dual_mode_get_tmds_output(const struct drm_device *dev, enum drm_dp_dual_mode_type type, |
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struct i2c_adapter *adapter, bool *enabled); |
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int drm_dp_dual_mode_set_tmds_output(const struct drm_device *dev, enum drm_dp_dual_mode_type type, |
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struct i2c_adapter *adapter, bool enable); |
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const char *drm_dp_get_dual_mode_type_name(enum drm_dp_dual_mode_type type); |
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int drm_lspcon_get_mode(const struct drm_device *dev, struct i2c_adapter *adapter, |
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enum drm_lspcon_mode *current_mode); |
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int drm_lspcon_set_mode(const struct drm_device *dev, struct i2c_adapter *adapter, |
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enum drm_lspcon_mode reqd_mode); |
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#endif
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