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 "dce_abm.h"
28 #include "dc.h"
29 #include "dc_dmub_srv.h"
30 #include "dmub/dmub_srv.h"
31 #include "core_types.h"
32 #include "dm_services.h"
33 #include "reg_helper.h"
34 #include "fixed31_32.h"
35
36 #include "atom.h"
37
38 #define TO_DMUB_ABM(abm)\
39 container_of(abm, struct dce_abm, base)
40
41 #define REG(reg) \
42 (dce_abm->regs->reg)
43
44 #undef FN
45 #define FN(reg_name, field_name) \
46 dce_abm->abm_shift->field_name, dce_abm->abm_mask->field_name
47
48 #define CTX \
49 dce_abm->base.ctx
50
51 #define DISABLE_ABM_IMMEDIATELY 255
52
53
54
dmub_abm_enable_fractional_pwm(struct dc_context * dc)55 static void dmub_abm_enable_fractional_pwm(struct dc_context *dc)
56 {
57 union dmub_rb_cmd cmd;
58 uint32_t fractional_pwm = (dc->dc->config.disable_fractional_pwm == false) ? 1 : 0;
59 uint32_t edp_id_count = dc->dc_edp_id_count;
60 int i;
61 uint8_t panel_mask = 0;
62
63 for (i = 0; i < edp_id_count; i++)
64 panel_mask |= 0x01 << i;
65
66 memset(&cmd, 0, sizeof(cmd));
67 cmd.abm_set_pwm_frac.header.type = DMUB_CMD__ABM;
68 cmd.abm_set_pwm_frac.header.sub_type = DMUB_CMD__ABM_SET_PWM_FRAC;
69 cmd.abm_set_pwm_frac.abm_set_pwm_frac_data.fractional_pwm = fractional_pwm;
70 cmd.abm_set_pwm_frac.abm_set_pwm_frac_data.version = DMUB_CMD_ABM_CONTROL_VERSION_1;
71 cmd.abm_set_pwm_frac.abm_set_pwm_frac_data.panel_mask = panel_mask;
72 cmd.abm_set_pwm_frac.header.payload_bytes = sizeof(struct dmub_cmd_abm_set_pwm_frac_data);
73
74 dc_dmub_srv_cmd_queue(dc->dmub_srv, &cmd);
75 dc_dmub_srv_cmd_execute(dc->dmub_srv);
76 dc_dmub_srv_wait_idle(dc->dmub_srv);
77 }
78
dmub_abm_init(struct abm * abm,uint32_t backlight)79 static void dmub_abm_init(struct abm *abm, uint32_t backlight)
80 {
81 struct dce_abm *dce_abm = TO_DMUB_ABM(abm);
82
83 REG_WRITE(DC_ABM1_HG_SAMPLE_RATE, 0x3);
84 REG_WRITE(DC_ABM1_HG_SAMPLE_RATE, 0x1);
85 REG_WRITE(DC_ABM1_LS_SAMPLE_RATE, 0x3);
86 REG_WRITE(DC_ABM1_LS_SAMPLE_RATE, 0x1);
87 REG_WRITE(BL1_PWM_BL_UPDATE_SAMPLE_RATE, 0x1);
88
89 REG_SET_3(DC_ABM1_HG_MISC_CTRL, 0,
90 ABM1_HG_NUM_OF_BINS_SEL, 0,
91 ABM1_HG_VMAX_SEL, 1,
92 ABM1_HG_BIN_BITWIDTH_SIZE_SEL, 0);
93
94 REG_SET_3(DC_ABM1_IPCSC_COEFF_SEL, 0,
95 ABM1_IPCSC_COEFF_SEL_R, 2,
96 ABM1_IPCSC_COEFF_SEL_G, 4,
97 ABM1_IPCSC_COEFF_SEL_B, 2);
98
99 REG_UPDATE(BL1_PWM_CURRENT_ABM_LEVEL,
100 BL1_PWM_CURRENT_ABM_LEVEL, backlight);
101
102 REG_UPDATE(BL1_PWM_TARGET_ABM_LEVEL,
103 BL1_PWM_TARGET_ABM_LEVEL, backlight);
104
105 REG_UPDATE(BL1_PWM_USER_LEVEL,
106 BL1_PWM_USER_LEVEL, backlight);
107
108 REG_UPDATE_2(DC_ABM1_LS_MIN_MAX_PIXEL_VALUE_THRES,
109 ABM1_LS_MIN_PIXEL_VALUE_THRES, 0,
110 ABM1_LS_MAX_PIXEL_VALUE_THRES, 1000);
111
112 REG_SET_3(DC_ABM1_HGLS_REG_READ_PROGRESS, 0,
113 ABM1_HG_REG_READ_MISSED_FRAME_CLEAR, 1,
114 ABM1_LS_REG_READ_MISSED_FRAME_CLEAR, 1,
115 ABM1_BL_REG_READ_MISSED_FRAME_CLEAR, 1);
116
117 dmub_abm_enable_fractional_pwm(abm->ctx);
118 }
119
dmub_abm_get_current_backlight(struct abm * abm)120 static unsigned int dmub_abm_get_current_backlight(struct abm *abm)
121 {
122 struct dce_abm *dce_abm = TO_DMUB_ABM(abm);
123 unsigned int backlight = REG_READ(BL1_PWM_CURRENT_ABM_LEVEL);
124
125 /* return backlight in hardware format which is unsigned 17 bits, with
126 * 1 bit integer and 16 bit fractional
127 */
128 return backlight;
129 }
130
dmub_abm_get_target_backlight(struct abm * abm)131 static unsigned int dmub_abm_get_target_backlight(struct abm *abm)
132 {
133 struct dce_abm *dce_abm = TO_DMUB_ABM(abm);
134 unsigned int backlight = REG_READ(BL1_PWM_TARGET_ABM_LEVEL);
135
136 /* return backlight in hardware format which is unsigned 17 bits, with
137 * 1 bit integer and 16 bit fractional
138 */
139 return backlight;
140 }
141
dmub_abm_set_level(struct abm * abm,uint32_t level)142 static bool dmub_abm_set_level(struct abm *abm, uint32_t level)
143 {
144 union dmub_rb_cmd cmd;
145 struct dc_context *dc = abm->ctx;
146 struct dc_link *edp_links[MAX_NUM_EDP];
147 int i;
148 int edp_num;
149 uint8_t panel_mask = 0;
150
151 get_edp_links(dc->dc, edp_links, &edp_num);
152
153 for (i = 0; i < edp_num; i++) {
154 if (edp_links[i]->link_status.link_active)
155 panel_mask |= (0x01 << i);
156 }
157
158 memset(&cmd, 0, sizeof(cmd));
159 cmd.abm_set_level.header.type = DMUB_CMD__ABM;
160 cmd.abm_set_level.header.sub_type = DMUB_CMD__ABM_SET_LEVEL;
161 cmd.abm_set_level.abm_set_level_data.level = level;
162 cmd.abm_set_level.abm_set_level_data.version = DMUB_CMD_ABM_CONTROL_VERSION_1;
163 cmd.abm_set_level.abm_set_level_data.panel_mask = panel_mask;
164 cmd.abm_set_level.header.payload_bytes = sizeof(struct dmub_cmd_abm_set_level_data);
165
166 dc_dmub_srv_cmd_queue(dc->dmub_srv, &cmd);
167 dc_dmub_srv_cmd_execute(dc->dmub_srv);
168 dc_dmub_srv_wait_idle(dc->dmub_srv);
169
170 return true;
171 }
172
dmub_abm_init_config(struct abm * abm,const char * src,unsigned int bytes,unsigned int inst)173 static bool dmub_abm_init_config(struct abm *abm,
174 const char *src,
175 unsigned int bytes,
176 unsigned int inst)
177 {
178 union dmub_rb_cmd cmd;
179 struct dc_context *dc = abm->ctx;
180 uint8_t panel_mask = 0x01 << inst;
181
182 // TODO: Optimize by only reading back final 4 bytes
183 dmub_flush_buffer_mem(&dc->dmub_srv->dmub->scratch_mem_fb);
184
185 // Copy iramtable into cw7
186 memcpy(dc->dmub_srv->dmub->scratch_mem_fb.cpu_addr, (void *)src, bytes);
187
188 memset(&cmd, 0, sizeof(cmd));
189 // Fw will copy from cw7 to fw_state
190 cmd.abm_init_config.header.type = DMUB_CMD__ABM;
191 cmd.abm_init_config.header.sub_type = DMUB_CMD__ABM_INIT_CONFIG;
192 cmd.abm_init_config.abm_init_config_data.src.quad_part = dc->dmub_srv->dmub->scratch_mem_fb.gpu_addr;
193 cmd.abm_init_config.abm_init_config_data.bytes = bytes;
194 cmd.abm_init_config.abm_init_config_data.version = DMUB_CMD_ABM_CONTROL_VERSION_1;
195 cmd.abm_init_config.abm_init_config_data.panel_mask = panel_mask;
196
197 cmd.abm_init_config.header.payload_bytes = sizeof(struct dmub_cmd_abm_init_config_data);
198
199 dc_dmub_srv_cmd_queue(dc->dmub_srv, &cmd);
200 dc_dmub_srv_cmd_execute(dc->dmub_srv);
201 dc_dmub_srv_wait_idle(dc->dmub_srv);
202
203 return true;
204 }
205
dmub_abm_set_pause(struct abm * abm,bool pause,unsigned int panel_inst,unsigned int stream_inst)206 static bool dmub_abm_set_pause(struct abm *abm, bool pause, unsigned int panel_inst, unsigned int stream_inst)
207 {
208 union dmub_rb_cmd cmd;
209 struct dc_context *dc = abm->ctx;
210 uint8_t panel_mask = 0x01 << panel_inst;
211
212 memset(&cmd, 0, sizeof(cmd));
213 cmd.abm_pause.header.type = DMUB_CMD__ABM;
214 cmd.abm_pause.header.sub_type = DMUB_CMD__ABM_PAUSE;
215 cmd.abm_pause.abm_pause_data.enable = pause;
216 cmd.abm_pause.abm_pause_data.panel_mask = panel_mask;
217 cmd.abm_set_level.header.payload_bytes = sizeof(struct dmub_cmd_abm_pause_data);
218
219 dc_dmub_srv_cmd_queue(dc->dmub_srv, &cmd);
220 dc_dmub_srv_cmd_execute(dc->dmub_srv);
221 dc_dmub_srv_wait_idle(dc->dmub_srv);
222
223 return true;
224 }
225
226 static const struct abm_funcs abm_funcs = {
227 .abm_init = dmub_abm_init,
228 .set_abm_level = dmub_abm_set_level,
229 .get_current_backlight = dmub_abm_get_current_backlight,
230 .get_target_backlight = dmub_abm_get_target_backlight,
231 .init_abm_config = dmub_abm_init_config,
232 .set_abm_pause = dmub_abm_set_pause,
233 };
234
dmub_abm_construct(struct dce_abm * abm_dce,struct dc_context * ctx,const struct dce_abm_registers * regs,const struct dce_abm_shift * abm_shift,const struct dce_abm_mask * abm_mask)235 static void dmub_abm_construct(
236 struct dce_abm *abm_dce,
237 struct dc_context *ctx,
238 const struct dce_abm_registers *regs,
239 const struct dce_abm_shift *abm_shift,
240 const struct dce_abm_mask *abm_mask)
241 {
242 struct abm *base = &abm_dce->base;
243
244 base->ctx = ctx;
245 base->funcs = &abm_funcs;
246 base->dmcu_is_running = false;
247
248 abm_dce->regs = regs;
249 abm_dce->abm_shift = abm_shift;
250 abm_dce->abm_mask = abm_mask;
251 }
252
dmub_abm_create(struct dc_context * ctx,const struct dce_abm_registers * regs,const struct dce_abm_shift * abm_shift,const struct dce_abm_mask * abm_mask)253 struct abm *dmub_abm_create(
254 struct dc_context *ctx,
255 const struct dce_abm_registers *regs,
256 const struct dce_abm_shift *abm_shift,
257 const struct dce_abm_mask *abm_mask)
258 {
259 struct dce_abm *abm_dce = kzalloc(sizeof(*abm_dce), GFP_KERNEL);
260
261 if (abm_dce == NULL) {
262 BREAK_TO_DEBUGGER();
263 return NULL;
264 }
265
266 dmub_abm_construct(abm_dce, ctx, regs, abm_shift, abm_mask);
267
268 return &abm_dce->base;
269 }
270
dmub_abm_destroy(struct abm ** abm)271 void dmub_abm_destroy(struct abm **abm)
272 {
273 struct dce_abm *abm_dce = TO_DMUB_ABM(*abm);
274
275 kfree(abm_dce);
276 *abm = NULL;
277 }
278