diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc_ddc_types.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_ddc_types.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_ddc_types.h b/drivers/gpu/drm/amd/display/dc/dc_ddc_types.h new file mode 100644 index 000000000000..e1affeb5cc51 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/dc_ddc_types.h @@ -0,0 +1,115 @@ +/* + * Copyright 2012-15 Advanced Micro Devices, Inc. + * + * 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. + * + * Authors: AMD + * + */ +#ifndef DC_DDC_TYPES_H_ +#define DC_DDC_TYPES_H_ + +struct i2c_payload { + bool write; + uint8_t address; + uint32_t length; + uint8_t *data; +}; + +enum i2c_command_engine { + I2C_COMMAND_ENGINE_DEFAULT, + I2C_COMMAND_ENGINE_SW, + I2C_COMMAND_ENGINE_HW +}; + +struct i2c_command { + struct i2c_payload *payloads; + uint8_t number_of_payloads; + + enum i2c_command_engine engine; + + /* expressed in KHz + * zero means "use default value" */ + uint32_t speed; +}; + +struct gpio_ddc_hw_info { + bool hw_supported; + uint32_t ddc_channel; +}; + +struct ddc { + struct gpio *pin_data; + struct gpio *pin_clock; + struct gpio_ddc_hw_info hw_info; + struct dc_context *ctx; +}; + +union ddc_wa { + struct { + uint32_t DP_SKIP_POWER_OFF:1; + uint32_t DP_AUX_POWER_UP_WA_DELAY:1; + } bits; + uint32_t raw; +}; + +struct ddc_flags { + uint8_t EDID_QUERY_DONE_ONCE:1; + uint8_t IS_INTERNAL_DISPLAY:1; + uint8_t FORCE_READ_REPEATED_START:1; + uint8_t EDID_STRESS_READ:1; + +}; + +enum ddc_transaction_type { + DDC_TRANSACTION_TYPE_NONE = 0, + DDC_TRANSACTION_TYPE_I2C, + DDC_TRANSACTION_TYPE_I2C_OVER_AUX, + DDC_TRANSACTION_TYPE_I2C_OVER_AUX_WITH_DEFER, + DDC_TRANSACTION_TYPE_I2C_OVER_AUX_RETRY_DEFER +}; + +enum display_dongle_type { + DISPLAY_DONGLE_NONE = 0, + /* Active converter types*/ + DISPLAY_DONGLE_DP_VGA_CONVERTER, + DISPLAY_DONGLE_DP_DVI_CONVERTER, + DISPLAY_DONGLE_DP_HDMI_CONVERTER, + /* DP-HDMI/DVI passive dongles (Type 1 and Type 2)*/ + DISPLAY_DONGLE_DP_DVI_DONGLE, + DISPLAY_DONGLE_DP_HDMI_DONGLE, + /* Other types of dongle*/ + DISPLAY_DONGLE_DP_HDMI_MISMATCHED_DONGLE, +}; + +struct ddc_service { + struct ddc *ddc_pin; + struct ddc_flags flags; + union ddc_wa wa; + enum ddc_transaction_type transaction_type; + enum display_dongle_type dongle_type; + struct dc_context *ctx; + struct dc_link *link; + + uint32_t address; + uint32_t edid_buf_len; + uint8_t edid_buf[MAX_EDID_BUFFER_SIZE]; +}; + +#endif /* DC_DDC_TYPES_H_ */ |