dmub_abm.c

  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, edp_links, &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, 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_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, 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(abm_dce);
244	*abm = NULL;
245}