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Commit 39a3cd67 authored by Dmytro Laktyushkin's avatar Dmytro Laktyushkin Committed by Alex Deucher
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drm/amd/display: fix dentist did ranges 



Dentist did ranges were incomplete as max setting has an unusual
divider step up of 66.

Signed-off-by: default avatarDmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: default avatarCharlene Liu <Charlene.Liu@amd.com>
Acked-by: default avatarBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 66b198ff

drivers/gpu/drm/amd/display/dc/dce/dce_clocks.c

+8 −2
Original line number Diff line number Diff line
@@ -106,7 +106,8 @@ enum dentist_base_divider_id { 
	DENTIST_BASE_DID_1 = 0x08,

	DENTIST_BASE_DID_2 = 0x40,

	DENTIST_BASE_DID_3 = 0x60,

	DENTIST_MAX_DID    = 0x80

	DENTIST_BASE_DID_4 = 0x7e,

	DENTIST_MAX_DID = 0x7f

};



/* Starting point and step size for each divider range.*/
@@ -117,6 +118,8 @@ enum dentist_divider_range { 
	DENTIST_DIVIDER_RANGE_2_STEP  = 2,   /* 0.50  */

	DENTIST_DIVIDER_RANGE_3_START = 128, /* 32.00 */

	DENTIST_DIVIDER_RANGE_3_STEP  = 4,   /* 1.00  */

	DENTIST_DIVIDER_RANGE_4_START = 248, /* 62.00 */

	DENTIST_DIVIDER_RANGE_4_STEP  = 264, /* 66.00 */

	DENTIST_DIVIDER_RANGE_SCALE_FACTOR = 4

};
@@ -133,9 +136,12 @@ static int dentist_get_divider_from_did(int did) 
	} else if (did < DENTIST_BASE_DID_3) {

		return DENTIST_DIVIDER_RANGE_2_START + DENTIST_DIVIDER_RANGE_2_STEP

							* (did - DENTIST_BASE_DID_2);

	} else {

	} else if (did < DENTIST_BASE_DID_4) {

		return DENTIST_DIVIDER_RANGE_3_START + DENTIST_DIVIDER_RANGE_3_STEP

							* (did - DENTIST_BASE_DID_3);

	} else {

		return DENTIST_DIVIDER_RANGE_4_START + DENTIST_DIVIDER_RANGE_4_STEP

							* (did - DENTIST_BASE_DID_4);

	}

}