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      1 /*	$NetBSD: dcn10_dwb.c,v 1.2 2021/12/18 23:45:03 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012-17 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: AMD
     25  *
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: dcn10_dwb.c,v 1.2 2021/12/18 23:45:03 riastradh Exp $");
     30 
     31 #if defined(CONFIG_DRM_AMD_DC_DCN)
     32 
     33 #include "reg_helper.h"
     34 #include "resource.h"
     35 #include "dwb.h"
     36 #include "dcn10_dwb.h"
     37 
     38 
     39 #define REG(reg)\
     40 	dwbc10->dwbc_regs->reg
     41 
     42 #define CTX \
     43 	dwbc10->base.ctx
     44 
     45 #undef FN
     46 #define FN(reg_name, field_name) \
     47 	dwbc10->dwbc_shift->field_name, dwbc10->dwbc_mask->field_name
     48 
     49 #define TO_DCN10_DWBC(dwbc_base) \
     50 	container_of(dwbc_base, struct dcn10_dwbc, base)
     51 
     52 static bool dwb1_get_caps(struct dwbc *dwbc, struct dwb_caps *caps)
     53 {
     54 	if (caps) {
     55 		caps->adapter_id = 0;	/* we only support 1 adapter currently */
     56 		caps->hw_version = DCN_VERSION_1_0;
     57 		caps->num_pipes = 2;
     58 		memset(&caps->reserved, 0, sizeof(caps->reserved));
     59 		memset(&caps->reserved2, 0, sizeof(caps->reserved2));
     60 		caps->sw_version = dwb_ver_1_0;
     61 		caps->caps.support_dwb = true;
     62 		caps->caps.support_ogam = false;
     63 		caps->caps.support_wbscl = true;
     64 		caps->caps.support_ocsc = false;
     65 		return true;
     66 	} else {
     67 		return false;
     68 	}
     69 }
     70 
     71 static bool dwb1_enable(struct dwbc *dwbc, struct dc_dwb_params *params)
     72 {
     73 	struct dcn10_dwbc *dwbc10 = TO_DCN10_DWBC(dwbc);
     74 
     75 	/* disable first. */
     76 	dwbc->funcs->disable(dwbc);
     77 
     78 	/* disable power gating */
     79 	REG_UPDATE_5(WB_EC_CONFIG, DISPCLK_R_WB_GATE_DIS, 1,
     80 		 DISPCLK_G_WB_GATE_DIS, 1, DISPCLK_G_WBSCL_GATE_DIS, 1,
     81 		 WB_LB_LS_DIS, 1, WB_LUT_LS_DIS, 1);
     82 
     83 	REG_UPDATE(WB_ENABLE, WB_ENABLE, 1);
     84 
     85 	return true;
     86 }
     87 
     88 static bool dwb1_disable(struct dwbc *dwbc)
     89 {
     90 	struct dcn10_dwbc *dwbc10 = TO_DCN10_DWBC(dwbc);
     91 
     92 	/* disable CNV */
     93 	REG_UPDATE(CNV_MODE, CNV_FRAME_CAPTURE_EN, 0);
     94 
     95 	/* disable WB */
     96 	REG_UPDATE(WB_ENABLE, WB_ENABLE, 0);
     97 
     98 	/* soft reset */
     99 	REG_UPDATE(WB_SOFT_RESET, WB_SOFT_RESET, 1);
    100 	REG_UPDATE(WB_SOFT_RESET, WB_SOFT_RESET, 0);
    101 
    102 	/* enable power gating */
    103 	REG_UPDATE_5(WB_EC_CONFIG, DISPCLK_R_WB_GATE_DIS, 0,
    104 		 DISPCLK_G_WB_GATE_DIS, 0, DISPCLK_G_WBSCL_GATE_DIS, 0,
    105 		 WB_LB_LS_DIS, 0, WB_LUT_LS_DIS, 0);
    106 
    107 	return true;
    108 }
    109 
    110 const struct dwbc_funcs dcn10_dwbc_funcs = {
    111 	.get_caps			= dwb1_get_caps,
    112 	.enable				= dwb1_enable,
    113 	.disable			= dwb1_disable,
    114 	.update				= NULL,
    115 	.set_stereo			= NULL,
    116 	.set_new_content		= NULL,
    117 	.set_warmup			= NULL,
    118 	.dwb_set_scaler			= NULL,
    119 };
    120 
    121 void dcn10_dwbc_construct(struct dcn10_dwbc *dwbc10,
    122 		struct dc_context *ctx,
    123 		const struct dcn10_dwbc_registers *dwbc_regs,
    124 		const struct dcn10_dwbc_shift *dwbc_shift,
    125 		const struct dcn10_dwbc_mask *dwbc_mask,
    126 		int inst)
    127 {
    128 	dwbc10->base.ctx = ctx;
    129 
    130 	dwbc10->base.inst = inst;
    131 	dwbc10->base.funcs = &dcn10_dwbc_funcs;
    132 
    133 	dwbc10->dwbc_regs = dwbc_regs;
    134 	dwbc10->dwbc_shift = dwbc_shift;
    135 	dwbc10->dwbc_mask = dwbc_mask;
    136 }
    137 
    138 
    139 #endif
    140