Commit 74c49c7a authored by Harry Wentland's avatar Harry Wentland Committed by Alex Deucher
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drm/amdgpu/display: Add calcs code for DCN 



Bandwidth and scaling calculations for DCN.

Signed-off-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 03ea364c

drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_auto.c

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drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_auto.h

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/*

 * Copyright 2017 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 _DCN_CALC_AUTO_H_

#define _DCN_CALC_AUTO_H_



#include "dcn_calcs.h"



void scaler_settings_calculation(struct dcn_bw_internal_vars *v);

void mode_support_and_system_configuration(struct dcn_bw_internal_vars *v);

void display_pipe_configuration(struct dcn_bw_internal_vars *v);

void dispclkdppclkdcfclk_deep_sleep_prefetch_parameters_watermarks_and_performance_calculation(

		struct dcn_bw_internal_vars *v);



#endif /* _DCN_CALC_AUTO_H_ */

drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.c

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/*

 * Copyright 2017 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

 *

 */



#include "dcn_calc_math.h"



float dcn_bw_mod(const float arg1, const float arg2)

{

	return arg1 - arg1 * ((int) (arg1 / arg2));

}



float dcn_bw_min2(const float arg1, const float arg2)

{

	return arg1 < arg2 ? arg1 : arg2;

}



unsigned int dcn_bw_max(const unsigned int arg1, const unsigned int arg2)

{

	return arg1 > arg2 ? arg1 : arg2;

}

float dcn_bw_max2(const float arg1, const float arg2)

{

	return arg1 > arg2 ? arg1 : arg2;

}



float dcn_bw_floor2(const float arg, const float significance)

{

	if (significance == 0)

		return 0;

	return ((int) (arg / significance)) * significance;

}



float dcn_bw_ceil2(const float arg, const float significance)

{

	float flr = dcn_bw_floor2(arg, significance);

	if (significance == 0)

		return 0;

	return flr + 0.00001 >= arg ? arg : flr + significance;

}



float dcn_bw_max3(float v1, float v2, float v3)

{

	return v3 > dcn_bw_max2(v1, v2) ? v3 : dcn_bw_max2(v1, v2);

}



float dcn_bw_max5(float v1, float v2, float v3, float v4, float v5)

{

	return dcn_bw_max3(v1, v2, v3) > dcn_bw_max2(v4, v5) ? dcn_bw_max3(v1, v2, v3) : dcn_bw_max2(v4, v5);

}



float dcn_bw_pow(float a, float exp)

{

	float temp;

	/*ASSERT(exp == (int)exp);*/

	if ((int)exp == 0)

		return 1;

	temp = dcn_bw_pow(a, (int)(exp / 2));

	if (((int)exp % 2) == 0) {

		return temp * temp;

	} else {

		if ((int)exp > 0)

			return a * temp * temp;

		else

			return (temp * temp) / a;

	}

}



float dcn_bw_log(float a, float b)

{

	int * const exp_ptr = (int *)(&a);

	int x = *exp_ptr;

	const int log_2 = ((x >> 23) & 255) - 128;

	x &= ~(255 << 23);

	x += 127 << 23;

	*exp_ptr = x;



	a = ((-1.0f / 3) * a + 2) * a - 2.0f / 3;



	if (b > 2.00001 || b < 1.99999)

		return (a + log_2) / dcn_bw_log(b, 2);

	else

		return (a + log_2);

}

drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_math.h

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Original line number Diff line number Diff line 
/*

 * Copyright 2017 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 _DCN_CALC_MATH_H_

#define _DCN_CALC_MATH_H_



float dcn_bw_mod(const float arg1, const float arg2);

float dcn_bw_min2(const float arg1, const float arg2);

unsigned int dcn_bw_max(const unsigned int arg1, const unsigned int arg2);

float dcn_bw_max2(const float arg1, const float arg2);

float dcn_bw_floor2(const float arg, const float significance);

float dcn_bw_ceil2(const float arg, const float significance);

float dcn_bw_max3(float v1, float v2, float v3);

float dcn_bw_max5(float v1, float v2, float v3, float v4, float v5);

float dcn_bw_pow(float a, float exp);

float dcn_bw_log(float a, float b);



#endif /* _DCN_CALC_MATH_H_ */

drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c

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