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1/*2 * Copyright © 2016 Intel Corporation3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 */22 23#ifndef DRM_DP_DUAL_MODE_HELPER_H24#define DRM_DP_DUAL_MODE_HELPER_H25 26#include <linux/types.h>27 28/*29 * Optional for type 1 DVI adaptors30 * Mandatory for type 1 HDMI and type 2 adaptors31 */32#define DP_DUAL_MODE_HDMI_ID 0x00 /* 00-0f */33#define DP_DUAL_MODE_HDMI_ID_LEN 1634/*35 * Optional for type 1 adaptors36 * Mandatory for type 2 adaptors37 */38#define DP_DUAL_MODE_ADAPTOR_ID 0x1039#define DP_DUAL_MODE_REV_MASK 0x0740#define DP_DUAL_MODE_REV_TYPE2 0x0041#define DP_DUAL_MODE_TYPE_MASK 0xf042#define DP_DUAL_MODE_TYPE_TYPE2 0xa043/* This field is marked reserved in dual mode spec, used in LSPCON */44#define DP_DUAL_MODE_TYPE_HAS_DPCD 0x0845#define DP_DUAL_MODE_IEEE_OUI 0x11 /* 11-13*/46#define DP_DUAL_IEEE_OUI_LEN 347#define DP_DUAL_DEVICE_ID 0x14 /* 14-19 */48#define DP_DUAL_DEVICE_ID_LEN 649#define DP_DUAL_MODE_HARDWARE_REV 0x1a50#define DP_DUAL_MODE_FIRMWARE_MAJOR_REV 0x1b51#define DP_DUAL_MODE_FIRMWARE_MINOR_REV 0x1c52#define DP_DUAL_MODE_MAX_TMDS_CLOCK 0x1d53#define DP_DUAL_MODE_I2C_SPEED_CAP 0x1e54#define DP_DUAL_MODE_TMDS_OEN 0x2055#define DP_DUAL_MODE_TMDS_DISABLE 0x0156#define DP_DUAL_MODE_HDMI_PIN_CTRL 0x2157#define DP_DUAL_MODE_CEC_ENABLE 0x0158#define DP_DUAL_MODE_I2C_SPEED_CTRL 0x2259 60/* LSPCON specific registers, defined by MCA */61#define DP_DUAL_MODE_LSPCON_MODE_CHANGE 0x4062#define DP_DUAL_MODE_LSPCON_CURRENT_MODE 0x4163#define DP_DUAL_MODE_LSPCON_MODE_PCON 0x164 65struct drm_device;66struct i2c_adapter;67 68ssize_t drm_dp_dual_mode_read(struct i2c_adapter *adapter,69 u8 offset, void *buffer, size_t size);70ssize_t drm_dp_dual_mode_write(struct i2c_adapter *adapter,71 u8 offset, const void *buffer, size_t size);72 73/**74 * enum drm_lspcon_mode75 * @DRM_LSPCON_MODE_INVALID: No LSPCON.76 * @DRM_LSPCON_MODE_LS: Level shifter mode of LSPCON77 * which drives DP++ to HDMI 1.4 conversion.78 * @DRM_LSPCON_MODE_PCON: Protocol converter mode of LSPCON79 * which drives DP++ to HDMI 2.0 active conversion.80 */81enum drm_lspcon_mode {82 DRM_LSPCON_MODE_INVALID,83 DRM_LSPCON_MODE_LS,84 DRM_LSPCON_MODE_PCON,85};86 87/**88 * enum drm_dp_dual_mode_type - Type of the DP dual mode adaptor89 * @DRM_DP_DUAL_MODE_NONE: No DP dual mode adaptor90 * @DRM_DP_DUAL_MODE_UNKNOWN: Could be either none or type 1 DVI adaptor91 * @DRM_DP_DUAL_MODE_TYPE1_DVI: Type 1 DVI adaptor92 * @DRM_DP_DUAL_MODE_TYPE1_HDMI: Type 1 HDMI adaptor93 * @DRM_DP_DUAL_MODE_TYPE2_DVI: Type 2 DVI adaptor94 * @DRM_DP_DUAL_MODE_TYPE2_HDMI: Type 2 HDMI adaptor95 * @DRM_DP_DUAL_MODE_LSPCON: Level shifter / protocol converter96 */97enum drm_dp_dual_mode_type {98 DRM_DP_DUAL_MODE_NONE,99 DRM_DP_DUAL_MODE_UNKNOWN,100 DRM_DP_DUAL_MODE_TYPE1_DVI,101 DRM_DP_DUAL_MODE_TYPE1_HDMI,102 DRM_DP_DUAL_MODE_TYPE2_DVI,103 DRM_DP_DUAL_MODE_TYPE2_HDMI,104 DRM_DP_DUAL_MODE_LSPCON,105};106 107enum drm_dp_dual_mode_type108drm_dp_dual_mode_detect(const struct drm_device *dev, struct i2c_adapter *adapter);109int drm_dp_dual_mode_max_tmds_clock(const struct drm_device *dev, enum drm_dp_dual_mode_type type,110 struct i2c_adapter *adapter);111int drm_dp_dual_mode_get_tmds_output(const struct drm_device *dev, enum drm_dp_dual_mode_type type,112 struct i2c_adapter *adapter, bool *enabled);113int drm_dp_dual_mode_set_tmds_output(const struct drm_device *dev, enum drm_dp_dual_mode_type type,114 struct i2c_adapter *adapter, bool enable);115const char *drm_dp_get_dual_mode_type_name(enum drm_dp_dual_mode_type type);116 117int drm_lspcon_get_mode(const struct drm_device *dev, struct i2c_adapter *adapter,118 enum drm_lspcon_mode *current_mode);119int drm_lspcon_set_mode(const struct drm_device *dev, struct i2c_adapter *adapter,120 enum drm_lspcon_mode reqd_mode);121#endif122