diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_i2c_sw.h')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_i2c_sw.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_sw.h b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_sw.h new file mode 100644 index 0000000000..019fc47bb7 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_i2c_sw.h @@ -0,0 +1,57 @@ +/* + * Copyright 2018 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 __DCE_I2C_SW_H__ +#define __DCE_I2C_SW_H__ + +enum { + DCE_I2C_DEFAULT_I2C_SW_SPEED = 50, + I2C_SW_RETRIES = 10, + I2C_SW_TIMEOUT_DELAY = 3000, +}; + +struct dce_i2c_sw { + struct ddc *ddc; + struct dc_context *ctx; + uint32_t clock_delay; + uint32_t speed; +}; + +void dce_i2c_sw_construct( + struct dce_i2c_sw *dce_i2c_sw, + struct dc_context *ctx); + +bool dce_i2c_submit_command_sw( + struct resource_pool *pool, + struct ddc *ddc, + struct i2c_command *cmd, + struct dce_i2c_sw *dce_i2c_sw); + +bool dce_i2c_engine_acquire_sw( + struct dce_i2c_sw *dce_i2c_sw, + struct ddc *ddc_handle); + +#endif + |