1/*
2 * Copyright 2019 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 "dmub_abm.h"
27#include "dmub_abm_lcd.h"
28#include "dc.h"
29#include "core_types.h"
30#include "dmub_cmd.h"
31#include "dc_dmub_srv.h"
32#include "dmub/dmub_srv.h"
33
34#define TO_DMUB_ABM(abm)\
35 container_of(abm, struct dce_abm, base)
36
37#define ABM_FEATURE_NO_SUPPORT 0
38#define ABM_LCD_SUPPORT 1
39
40static unsigned int abm_feature_support(struct abm *abm, unsigned int panel_inst)
41{
42 struct dc_context *dc = abm->ctx;
43 struct dc_link *edp_links[MAX_NUM_EDP];
44 int i;
45 int edp_num;
46 unsigned int ret = ABM_FEATURE_NO_SUPPORT;
47
48 dc_get_edp_links(dc: dc->dc, edp_links, edp_num: &edp_num);
49
50 for (i = 0; i < edp_num; i++) {
51 if (panel_inst == i)
52 break;
53 }
54
55 if (i < edp_num) {
56 ret = ABM_LCD_SUPPORT;
57 }
58
59 return ret;
60}
61
62static void dmub_abm_init_ex(struct abm *abm, uint32_t backlight, uint32_t user_level)
63{
64 dmub_abm_init(abm, backlight, user_level);
65}
66
67static unsigned int dmub_abm_get_current_backlight_ex(struct abm *abm)
68{
69 dc_allow_idle_optimizations(abm->ctx->dc, false);
70
71 return dmub_abm_get_current_backlight(abm);
72}
73
74static unsigned int dmub_abm_get_target_backlight_ex(struct abm *abm)
75{
76 dc_allow_idle_optimizations(abm->ctx->dc, false);
77
78 return dmub_abm_get_target_backlight(abm);
79}
80
81static bool dmub_abm_set_level_ex(struct abm *abm, uint32_t level)
82{
83 bool ret = false;
84 unsigned int feature_support, i;
85 uint8_t panel_mask0 = 0;
86
87 for (i = 0; i < MAX_NUM_EDP; i++) {
88 feature_support = abm_feature_support(abm, panel_inst: i);
89
90 if (feature_support == ABM_LCD_SUPPORT)
91 panel_mask0 |= (0x01 << i);
92 }
93
94 if (panel_mask0)
95 ret = dmub_abm_set_level(abm, level, panel_mask: panel_mask0);
96
97 return ret;
98}
99
100static bool dmub_abm_init_config_ex(struct abm *abm,
101 const char *src,
102 unsigned int bytes,
103 unsigned int inst)
104{
105 unsigned int feature_support;
106
107 feature_support = abm_feature_support(abm, panel_inst: inst);
108
109 if (feature_support == ABM_LCD_SUPPORT)
110 dmub_abm_init_config(abm, src, bytes, inst);
111
112 return true;
113}
114
115static bool dmub_abm_set_pause_ex(struct abm *abm, bool pause, unsigned int panel_inst, unsigned int stream_inst)
116{
117 bool ret = false;
118 unsigned int feature_support;
119
120 feature_support = abm_feature_support(abm, panel_inst);
121
122 if (feature_support == ABM_LCD_SUPPORT)
123 ret = dmub_abm_set_pause(abm, pause, panel_inst, stream_inst);
124
125 return ret;
126}
127
128/*****************************************************************************
129 * dmub_abm_save_restore_ex() - calls dmub_abm_save_restore for preserving DMUB's
130 * Varibright states for LCD only. OLED is TBD
131 * @abm: used to check get dc context
132 * @panel_inst: panel instance index
133 * @pData: contains command to pause/un-pause abm and abm parameters
134 *
135 *
136 ***************************************************************************/
137static bool dmub_abm_save_restore_ex(
138 struct abm *abm,
139 unsigned int panel_inst,
140 struct abm_save_restore *pData)
141{
142 bool ret = false;
143 unsigned int feature_support;
144 struct dc_context *dc = abm->ctx;
145
146 feature_support = abm_feature_support(abm, panel_inst);
147
148 if (feature_support == ABM_LCD_SUPPORT)
149 ret = dmub_abm_save_restore(dc, panel_inst, pData);
150
151 return ret;
152}
153
154static bool dmub_abm_set_pipe_ex(struct abm *abm,
155 uint32_t otg_inst,
156 uint32_t option,
157 uint32_t panel_inst,
158 uint32_t pwrseq_inst)
159{
160 bool ret = false;
161 unsigned int feature_support;
162
163 feature_support = abm_feature_support(abm, panel_inst);
164
165 if (feature_support == ABM_LCD_SUPPORT)
166 ret = dmub_abm_set_pipe(abm, otg_inst, option, panel_inst, pwrseq_inst);
167
168 return ret;
169}
170
171static bool dmub_abm_set_backlight_level_pwm_ex(struct abm *abm,
172 unsigned int backlight_pwm_u16_16,
173 unsigned int frame_ramp,
174 unsigned int controller_id,
175 unsigned int panel_inst)
176{
177 bool ret = false;
178 unsigned int feature_support;
179
180 feature_support = abm_feature_support(abm, panel_inst);
181
182 if (feature_support == ABM_LCD_SUPPORT)
183 ret = dmub_abm_set_backlight_level(abm, backlight_pwm_u16_16, frame_ramp, panel_inst);
184
185 return ret;
186}
187
188static const struct abm_funcs abm_funcs = {
189 .abm_init = dmub_abm_init_ex,
190 .set_abm_level = dmub_abm_set_level_ex,
191 .get_current_backlight = dmub_abm_get_current_backlight_ex,
192 .get_target_backlight = dmub_abm_get_target_backlight_ex,
193 .init_abm_config = dmub_abm_init_config_ex,
194 .set_abm_pause = dmub_abm_set_pause_ex,
195 .save_restore = dmub_abm_save_restore_ex,
196 .set_pipe_ex = dmub_abm_set_pipe_ex,
197 .set_backlight_level_pwm = dmub_abm_set_backlight_level_pwm_ex,
198};
199
200static void dmub_abm_construct(
201 struct dce_abm *abm_dce,
202 struct dc_context *ctx,
203 const struct dce_abm_registers *regs,
204 const struct dce_abm_shift *abm_shift,
205 const struct dce_abm_mask *abm_mask)
206{
207 struct abm *base = &abm_dce->base;
208
209 base->ctx = ctx;
210 base->funcs = &abm_funcs;
211 base->dmcu_is_running = false;
212
213 abm_dce->regs = regs;
214 abm_dce->abm_shift = abm_shift;
215 abm_dce->abm_mask = abm_mask;
216}
217
218struct abm *dmub_abm_create(
219 struct dc_context *ctx,
220 const struct dce_abm_registers *regs,
221 const struct dce_abm_shift *abm_shift,
222 const struct dce_abm_mask *abm_mask)
223{
224 if (ctx->dc->caps.dmcub_support) {
225 struct dce_abm *abm_dce = kzalloc(sizeof(*abm_dce), GFP_KERNEL);
226
227 if (abm_dce == NULL) {
228 BREAK_TO_DEBUGGER();
229 return NULL;
230 }
231
232 dmub_abm_construct(abm_dce, ctx, regs, abm_shift, abm_mask);
233
234 return &abm_dce->base;
235 }
236 return NULL;
237}
238
239void dmub_abm_destroy(struct abm **abm)
240{
241 struct dce_abm *abm_dce = TO_DMUB_ABM(*abm);
242
243 kfree(objp: abm_dce);
244 *abm = NULL;
245}
246

source code of linux/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c