1 /* 2 * Copyright 2021 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: AMD 23 * 24 */ 25 26 #include "reg_helper.h" 27 #include "core_types.h" 28 #include "dc_dmub_srv.h" 29 #include "dcn31_panel_cntl.h" 30 #include "atom.h" 31 32 #define TO_DCN31_PANEL_CNTL(panel_cntl)\ 33 container_of(panel_cntl, struct dcn31_panel_cntl, base) 34 35 #define CTX \ 36 dcn31_panel_cntl->base.ctx 37 38 #define DC_LOGGER \ 39 dcn31_panel_cntl->base.ctx->logger 40 41 static bool dcn31_query_backlight_info(struct panel_cntl *panel_cntl, union dmub_rb_cmd *cmd) 42 { 43 struct dcn31_panel_cntl *dcn31_panel_cntl = TO_DCN31_PANEL_CNTL(panel_cntl); 44 struct dc_dmub_srv *dc_dmub_srv = panel_cntl->ctx->dmub_srv; 45 46 if (!dc_dmub_srv) 47 return false; 48 49 memset(cmd, 0, sizeof(*cmd)); 50 cmd->panel_cntl.header.type = DMUB_CMD__PANEL_CNTL; 51 cmd->panel_cntl.header.sub_type = DMUB_CMD__PANEL_CNTL_QUERY_BACKLIGHT_INFO; 52 cmd->panel_cntl.header.payload_bytes = sizeof(cmd->panel_cntl.data); 53 cmd->panel_cntl.data.pwrseq_inst = dcn31_panel_cntl->base.pwrseq_inst; 54 55 return dc_wake_and_execute_dmub_cmd(dc_dmub_srv->ctx, cmd, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY); 56 } 57 58 static uint32_t dcn31_get_16_bit_backlight_from_pwm(struct panel_cntl *panel_cntl) 59 { 60 union dmub_rb_cmd cmd; 61 62 if (!dcn31_query_backlight_info(panel_cntl, &cmd)) 63 return 0; 64 65 return cmd.panel_cntl.data.current_backlight; 66 } 67 68 static uint32_t dcn31_panel_cntl_hw_init(struct panel_cntl *panel_cntl) 69 { 70 struct dcn31_panel_cntl *dcn31_panel_cntl = TO_DCN31_PANEL_CNTL(panel_cntl); 71 struct dc_dmub_srv *dc_dmub_srv = panel_cntl->ctx->dmub_srv; 72 union dmub_rb_cmd cmd; 73 74 if (!dc_dmub_srv) 75 return 0; 76 77 memset(&cmd, 0, sizeof(cmd)); 78 cmd.panel_cntl.header.type = DMUB_CMD__PANEL_CNTL; 79 cmd.panel_cntl.header.sub_type = DMUB_CMD__PANEL_CNTL_HW_INIT; 80 cmd.panel_cntl.header.payload_bytes = sizeof(cmd.panel_cntl.data); 81 cmd.panel_cntl.data.pwrseq_inst = dcn31_panel_cntl->base.pwrseq_inst; 82 cmd.panel_cntl.data.bl_pwm_cntl = panel_cntl->stored_backlight_registers.BL_PWM_CNTL; 83 cmd.panel_cntl.data.bl_pwm_period_cntl = panel_cntl->stored_backlight_registers.BL_PWM_PERIOD_CNTL; 84 cmd.panel_cntl.data.bl_pwm_ref_div1 = 85 panel_cntl->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV; 86 cmd.panel_cntl.data.bl_pwm_ref_div2 = 87 panel_cntl->stored_backlight_registers.PANEL_PWRSEQ_REF_DIV2; 88 if (!dc_wake_and_execute_dmub_cmd(dc_dmub_srv->ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT_WITH_REPLY)) 89 return 0; 90 91 panel_cntl->stored_backlight_registers.BL_PWM_CNTL = cmd.panel_cntl.data.bl_pwm_cntl; 92 panel_cntl->stored_backlight_registers.BL_PWM_CNTL2 = 0; /* unused */ 93 panel_cntl->stored_backlight_registers.BL_PWM_PERIOD_CNTL = cmd.panel_cntl.data.bl_pwm_period_cntl; 94 panel_cntl->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV = 95 cmd.panel_cntl.data.bl_pwm_ref_div1; 96 panel_cntl->stored_backlight_registers.PANEL_PWRSEQ_REF_DIV2 = 97 cmd.panel_cntl.data.bl_pwm_ref_div2; 98 99 return cmd.panel_cntl.data.current_backlight; 100 } 101 102 static void dcn31_panel_cntl_destroy(struct panel_cntl **panel_cntl) 103 { 104 struct dcn31_panel_cntl *dcn31_panel_cntl = TO_DCN31_PANEL_CNTL(*panel_cntl); 105 106 kfree(dcn31_panel_cntl); 107 *panel_cntl = NULL; 108 } 109 110 static bool dcn31_is_panel_backlight_on(struct panel_cntl *panel_cntl) 111 { 112 union dmub_rb_cmd cmd; 113 114 if (!dcn31_query_backlight_info(panel_cntl, &cmd)) 115 return false; 116 117 return cmd.panel_cntl.data.is_backlight_on; 118 } 119 120 static bool dcn31_is_panel_powered_on(struct panel_cntl *panel_cntl) 121 { 122 union dmub_rb_cmd cmd; 123 124 if (!dcn31_query_backlight_info(panel_cntl, &cmd)) 125 return false; 126 127 return cmd.panel_cntl.data.is_powered_on; 128 } 129 130 static void dcn31_store_backlight_level(struct panel_cntl *panel_cntl) 131 { 132 union dmub_rb_cmd cmd; 133 134 if (!dcn31_query_backlight_info(panel_cntl, &cmd)) 135 return; 136 137 panel_cntl->stored_backlight_registers.BL_PWM_CNTL = cmd.panel_cntl.data.bl_pwm_cntl; 138 panel_cntl->stored_backlight_registers.BL_PWM_CNTL2 = 0; /* unused */ 139 panel_cntl->stored_backlight_registers.BL_PWM_PERIOD_CNTL = cmd.panel_cntl.data.bl_pwm_period_cntl; 140 panel_cntl->stored_backlight_registers.LVTMA_PWRSEQ_REF_DIV_BL_PWM_REF_DIV = 141 cmd.panel_cntl.data.bl_pwm_ref_div1; 142 } 143 144 static const struct panel_cntl_funcs dcn31_link_panel_cntl_funcs = { 145 .destroy = dcn31_panel_cntl_destroy, 146 .hw_init = dcn31_panel_cntl_hw_init, 147 .is_panel_backlight_on = dcn31_is_panel_backlight_on, 148 .is_panel_powered_on = dcn31_is_panel_powered_on, 149 .store_backlight_level = dcn31_store_backlight_level, 150 .get_current_backlight = dcn31_get_16_bit_backlight_from_pwm, 151 }; 152 153 void dcn31_panel_cntl_construct( 154 struct dcn31_panel_cntl *dcn31_panel_cntl, 155 const struct panel_cntl_init_data *init_data) 156 { 157 dcn31_panel_cntl->base.funcs = &dcn31_link_panel_cntl_funcs; 158 dcn31_panel_cntl->base.ctx = init_data->ctx; 159 dcn31_panel_cntl->base.inst = init_data->inst; 160 dcn31_panel_cntl->base.pwrseq_inst = init_data->pwrseq_inst; 161 } 162