122 lines
4.6 KiB
C
122 lines
4.6 KiB
C
/*
|
|
* 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 drm_device;
|
|
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(const struct drm_device *dev, struct i2c_adapter *adapter);
|
|
int drm_dp_dual_mode_max_tmds_clock(const struct drm_device *dev, enum drm_dp_dual_mode_type type,
|
|
struct i2c_adapter *adapter);
|
|
int drm_dp_dual_mode_get_tmds_output(const struct drm_device *dev, enum drm_dp_dual_mode_type type,
|
|
struct i2c_adapter *adapter, bool *enabled);
|
|
int drm_dp_dual_mode_set_tmds_output(const struct drm_device *dev, 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(const struct drm_device *dev, struct i2c_adapter *adapter,
|
|
enum drm_lspcon_mode *current_mode);
|
|
int drm_lspcon_set_mode(const struct drm_device *dev, struct i2c_adapter *adapter,
|
|
enum drm_lspcon_mode reqd_mode);
|
|
#endif
|