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