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d5af49c9 HL |
1 | /* |
2 | * Copyright (c) 2015, The Linux Foundation. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 and | |
6 | * only version 2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | */ | |
13 | ||
14 | #include "mdp5_kms.h" | |
15 | ||
16 | #include "drm_crtc.h" | |
17 | #include "drm_crtc_helper.h" | |
18 | ||
19 | struct mdp5_cmd_encoder { | |
20 | struct drm_encoder base; | |
21 | struct mdp5_interface intf; | |
22 | bool enabled; | |
23 | uint32_t bsc; | |
c71716b1 HL |
24 | |
25 | struct mdp5_ctl *ctl; | |
d5af49c9 HL |
26 | }; |
27 | #define to_mdp5_cmd_encoder(x) container_of(x, struct mdp5_cmd_encoder, base) | |
28 | ||
29 | static struct mdp5_kms *get_kms(struct drm_encoder *encoder) | |
30 | { | |
31 | struct msm_drm_private *priv = encoder->dev->dev_private; | |
32 | return to_mdp5_kms(to_mdp_kms(priv->kms)); | |
33 | } | |
34 | ||
6490ad47 | 35 | #ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING |
d5af49c9 HL |
36 | #include <mach/board.h> |
37 | #include <linux/msm-bus.h> | |
38 | #include <linux/msm-bus-board.h> | |
39 | #define MDP_BUS_VECTOR_ENTRY(ab_val, ib_val) \ | |
40 | { \ | |
41 | .src = MSM_BUS_MASTER_MDP_PORT0, \ | |
42 | .dst = MSM_BUS_SLAVE_EBI_CH0, \ | |
43 | .ab = (ab_val), \ | |
44 | .ib = (ib_val), \ | |
45 | } | |
46 | ||
47 | static struct msm_bus_vectors mdp_bus_vectors[] = { | |
48 | MDP_BUS_VECTOR_ENTRY(0, 0), | |
49 | MDP_BUS_VECTOR_ENTRY(2000000000, 2000000000), | |
50 | }; | |
51 | static struct msm_bus_paths mdp_bus_usecases[] = { { | |
52 | .num_paths = 1, | |
53 | .vectors = &mdp_bus_vectors[0], | |
54 | }, { | |
55 | .num_paths = 1, | |
56 | .vectors = &mdp_bus_vectors[1], | |
57 | } }; | |
58 | static struct msm_bus_scale_pdata mdp_bus_scale_table = { | |
59 | .usecase = mdp_bus_usecases, | |
60 | .num_usecases = ARRAY_SIZE(mdp_bus_usecases), | |
61 | .name = "mdss_mdp", | |
62 | }; | |
63 | ||
64 | static void bs_init(struct mdp5_cmd_encoder *mdp5_cmd_enc) | |
65 | { | |
66 | mdp5_cmd_enc->bsc = msm_bus_scale_register_client( | |
67 | &mdp_bus_scale_table); | |
68 | DBG("bus scale client: %08x", mdp5_cmd_enc->bsc); | |
69 | } | |
70 | ||
71 | static void bs_fini(struct mdp5_cmd_encoder *mdp5_cmd_enc) | |
72 | { | |
73 | if (mdp5_cmd_enc->bsc) { | |
74 | msm_bus_scale_unregister_client(mdp5_cmd_enc->bsc); | |
75 | mdp5_cmd_enc->bsc = 0; | |
76 | } | |
77 | } | |
78 | ||
79 | static void bs_set(struct mdp5_cmd_encoder *mdp5_cmd_enc, int idx) | |
80 | { | |
81 | if (mdp5_cmd_enc->bsc) { | |
82 | DBG("set bus scaling: %d", idx); | |
83 | /* HACK: scaling down, and then immediately back up | |
84 | * seems to leave things broken (underflow).. so | |
85 | * never disable: | |
86 | */ | |
87 | idx = 1; | |
88 | msm_bus_scale_client_update_request(mdp5_cmd_enc->bsc, idx); | |
89 | } | |
90 | } | |
91 | #else | |
92 | static void bs_init(struct mdp5_cmd_encoder *mdp5_cmd_enc) {} | |
93 | static void bs_fini(struct mdp5_cmd_encoder *mdp5_cmd_enc) {} | |
94 | static void bs_set(struct mdp5_cmd_encoder *mdp5_cmd_enc, int idx) {} | |
95 | #endif | |
96 | ||
97 | #define VSYNC_CLK_RATE 19200000 | |
98 | static int pingpong_tearcheck_setup(struct drm_encoder *encoder, | |
99 | struct drm_display_mode *mode) | |
100 | { | |
101 | struct mdp5_kms *mdp5_kms = get_kms(encoder); | |
102 | struct device *dev = encoder->dev->dev; | |
103 | u32 total_lines_x100, vclks_line, cfg; | |
104 | long vsync_clk_speed; | |
105 | int pp_id = GET_PING_PONG_ID(mdp5_crtc_get_lm(encoder->crtc)); | |
106 | ||
107 | if (IS_ERR_OR_NULL(mdp5_kms->vsync_clk)) { | |
108 | dev_err(dev, "vsync_clk is not initialized\n"); | |
109 | return -EINVAL; | |
110 | } | |
111 | ||
112 | total_lines_x100 = mode->vtotal * mode->vrefresh; | |
113 | if (!total_lines_x100) { | |
114 | dev_err(dev, "%s: vtotal(%d) or vrefresh(%d) is 0\n", | |
115 | __func__, mode->vtotal, mode->vrefresh); | |
116 | return -EINVAL; | |
117 | } | |
118 | ||
119 | vsync_clk_speed = clk_round_rate(mdp5_kms->vsync_clk, VSYNC_CLK_RATE); | |
120 | if (vsync_clk_speed <= 0) { | |
121 | dev_err(dev, "vsync_clk round rate failed %ld\n", | |
122 | vsync_clk_speed); | |
123 | return -EINVAL; | |
124 | } | |
125 | vclks_line = vsync_clk_speed * 100 / total_lines_x100; | |
126 | ||
127 | cfg = MDP5_PP_SYNC_CONFIG_VSYNC_COUNTER_EN | |
128 | | MDP5_PP_SYNC_CONFIG_VSYNC_IN_EN; | |
129 | cfg |= MDP5_PP_SYNC_CONFIG_VSYNC_COUNT(vclks_line); | |
130 | ||
131 | mdp5_write(mdp5_kms, REG_MDP5_PP_SYNC_CONFIG_VSYNC(pp_id), cfg); | |
132 | mdp5_write(mdp5_kms, | |
133 | REG_MDP5_PP_SYNC_CONFIG_HEIGHT(pp_id), 0xfff0); | |
134 | mdp5_write(mdp5_kms, | |
135 | REG_MDP5_PP_VSYNC_INIT_VAL(pp_id), mode->vdisplay); | |
136 | mdp5_write(mdp5_kms, REG_MDP5_PP_RD_PTR_IRQ(pp_id), mode->vdisplay + 1); | |
137 | mdp5_write(mdp5_kms, REG_MDP5_PP_START_POS(pp_id), mode->vdisplay); | |
138 | mdp5_write(mdp5_kms, REG_MDP5_PP_SYNC_THRESH(pp_id), | |
139 | MDP5_PP_SYNC_THRESH_START(4) | | |
140 | MDP5_PP_SYNC_THRESH_CONTINUE(4)); | |
141 | ||
142 | return 0; | |
143 | } | |
144 | ||
145 | static int pingpong_tearcheck_enable(struct drm_encoder *encoder) | |
146 | { | |
147 | struct mdp5_kms *mdp5_kms = get_kms(encoder); | |
148 | int pp_id = GET_PING_PONG_ID(mdp5_crtc_get_lm(encoder->crtc)); | |
149 | int ret; | |
150 | ||
151 | ret = clk_set_rate(mdp5_kms->vsync_clk, | |
152 | clk_round_rate(mdp5_kms->vsync_clk, VSYNC_CLK_RATE)); | |
153 | if (ret) { | |
154 | dev_err(encoder->dev->dev, | |
155 | "vsync_clk clk_set_rate failed, %d\n", ret); | |
156 | return ret; | |
157 | } | |
158 | ret = clk_prepare_enable(mdp5_kms->vsync_clk); | |
159 | if (ret) { | |
160 | dev_err(encoder->dev->dev, | |
161 | "vsync_clk clk_prepare_enable failed, %d\n", ret); | |
162 | return ret; | |
163 | } | |
164 | ||
165 | mdp5_write(mdp5_kms, REG_MDP5_PP_TEAR_CHECK_EN(pp_id), 1); | |
166 | ||
167 | return 0; | |
168 | } | |
169 | ||
170 | static void pingpong_tearcheck_disable(struct drm_encoder *encoder) | |
171 | { | |
172 | struct mdp5_kms *mdp5_kms = get_kms(encoder); | |
173 | int pp_id = GET_PING_PONG_ID(mdp5_crtc_get_lm(encoder->crtc)); | |
174 | ||
175 | mdp5_write(mdp5_kms, REG_MDP5_PP_TEAR_CHECK_EN(pp_id), 0); | |
176 | clk_disable_unprepare(mdp5_kms->vsync_clk); | |
177 | } | |
178 | ||
179 | static void mdp5_cmd_encoder_destroy(struct drm_encoder *encoder) | |
180 | { | |
181 | struct mdp5_cmd_encoder *mdp5_cmd_enc = to_mdp5_cmd_encoder(encoder); | |
182 | bs_fini(mdp5_cmd_enc); | |
183 | drm_encoder_cleanup(encoder); | |
184 | kfree(mdp5_cmd_enc); | |
185 | } | |
186 | ||
187 | static const struct drm_encoder_funcs mdp5_cmd_encoder_funcs = { | |
188 | .destroy = mdp5_cmd_encoder_destroy, | |
189 | }; | |
190 | ||
191 | static bool mdp5_cmd_encoder_mode_fixup(struct drm_encoder *encoder, | |
192 | const struct drm_display_mode *mode, | |
193 | struct drm_display_mode *adjusted_mode) | |
194 | { | |
195 | return true; | |
196 | } | |
197 | ||
198 | static void mdp5_cmd_encoder_mode_set(struct drm_encoder *encoder, | |
199 | struct drm_display_mode *mode, | |
200 | struct drm_display_mode *adjusted_mode) | |
201 | { | |
202 | struct mdp5_cmd_encoder *mdp5_cmd_enc = to_mdp5_cmd_encoder(encoder); | |
203 | ||
204 | mode = adjusted_mode; | |
205 | ||
206 | DBG("set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", | |
207 | mode->base.id, mode->name, | |
208 | mode->vrefresh, mode->clock, | |
209 | mode->hdisplay, mode->hsync_start, | |
210 | mode->hsync_end, mode->htotal, | |
211 | mode->vdisplay, mode->vsync_start, | |
212 | mode->vsync_end, mode->vtotal, | |
213 | mode->type, mode->flags); | |
214 | pingpong_tearcheck_setup(encoder, mode); | |
c71716b1 HL |
215 | mdp5_crtc_set_pipeline(encoder->crtc, &mdp5_cmd_enc->intf, |
216 | mdp5_cmd_enc->ctl); | |
d5af49c9 HL |
217 | } |
218 | ||
219 | static void mdp5_cmd_encoder_disable(struct drm_encoder *encoder) | |
220 | { | |
221 | struct mdp5_cmd_encoder *mdp5_cmd_enc = to_mdp5_cmd_encoder(encoder); | |
c71716b1 | 222 | struct mdp5_ctl *ctl = mdp5_cmd_enc->ctl; |
d5af49c9 | 223 | struct mdp5_interface *intf = &mdp5_cmd_enc->intf; |
d5af49c9 HL |
224 | |
225 | if (WARN_ON(!mdp5_cmd_enc->enabled)) | |
226 | return; | |
227 | ||
d5af49c9 HL |
228 | pingpong_tearcheck_disable(encoder); |
229 | ||
230 | mdp5_ctl_set_encoder_state(ctl, false); | |
231 | mdp5_ctl_commit(ctl, mdp_ctl_flush_mask_encoder(intf)); | |
232 | ||
233 | bs_set(mdp5_cmd_enc, 0); | |
234 | ||
235 | mdp5_cmd_enc->enabled = false; | |
236 | } | |
237 | ||
238 | static void mdp5_cmd_encoder_enable(struct drm_encoder *encoder) | |
239 | { | |
240 | struct mdp5_cmd_encoder *mdp5_cmd_enc = to_mdp5_cmd_encoder(encoder); | |
c71716b1 | 241 | struct mdp5_ctl *ctl = mdp5_cmd_enc->ctl; |
d5af49c9 HL |
242 | struct mdp5_interface *intf = &mdp5_cmd_enc->intf; |
243 | ||
244 | if (WARN_ON(mdp5_cmd_enc->enabled)) | |
245 | return; | |
246 | ||
247 | bs_set(mdp5_cmd_enc, 1); | |
248 | if (pingpong_tearcheck_enable(encoder)) | |
249 | return; | |
250 | ||
251 | mdp5_ctl_commit(ctl, mdp_ctl_flush_mask_encoder(intf)); | |
252 | ||
253 | mdp5_ctl_set_encoder_state(ctl, true); | |
254 | ||
255 | mdp5_cmd_enc->enabled = true; | |
256 | } | |
257 | ||
258 | static const struct drm_encoder_helper_funcs mdp5_cmd_encoder_helper_funcs = { | |
259 | .mode_fixup = mdp5_cmd_encoder_mode_fixup, | |
260 | .mode_set = mdp5_cmd_encoder_mode_set, | |
261 | .disable = mdp5_cmd_encoder_disable, | |
262 | .enable = mdp5_cmd_encoder_enable, | |
263 | }; | |
264 | ||
265 | int mdp5_cmd_encoder_set_split_display(struct drm_encoder *encoder, | |
266 | struct drm_encoder *slave_encoder) | |
267 | { | |
268 | struct mdp5_cmd_encoder *mdp5_cmd_enc = to_mdp5_cmd_encoder(encoder); | |
269 | struct mdp5_kms *mdp5_kms; | |
270 | int intf_num; | |
271 | u32 data = 0; | |
272 | ||
273 | if (!encoder || !slave_encoder) | |
274 | return -EINVAL; | |
275 | ||
276 | mdp5_kms = get_kms(encoder); | |
277 | intf_num = mdp5_cmd_enc->intf.num; | |
278 | ||
279 | /* Switch slave encoder's trigger MUX, to use the master's | |
280 | * start signal for the slave encoder | |
281 | */ | |
282 | if (intf_num == 1) | |
af6cb4c1 | 283 | data |= MDP5_MDP_SPLIT_DPL_UPPER_INTF2_SW_TRG_MUX; |
d5af49c9 | 284 | else if (intf_num == 2) |
af6cb4c1 | 285 | data |= MDP5_MDP_SPLIT_DPL_UPPER_INTF1_SW_TRG_MUX; |
d5af49c9 HL |
286 | else |
287 | return -EINVAL; | |
288 | ||
289 | /* Smart Panel, Sync mode */ | |
af6cb4c1 | 290 | data |= MDP5_MDP_SPLIT_DPL_UPPER_SMART_PANEL; |
d5af49c9 HL |
291 | |
292 | /* Make sure clocks are on when connectors calling this function. */ | |
293 | mdp5_enable(mdp5_kms); | |
af6cb4c1 | 294 | mdp5_write(mdp5_kms, REG_MDP5_MDP_SPLIT_DPL_UPPER(0), data); |
d5af49c9 | 295 | |
af6cb4c1 RC |
296 | mdp5_write(mdp5_kms, REG_MDP5_MDP_SPLIT_DPL_LOWER(0), |
297 | MDP5_MDP_SPLIT_DPL_LOWER_SMART_PANEL); | |
298 | mdp5_write(mdp5_kms, REG_MDP5_MDP_SPLIT_DPL_EN(0), 1); | |
d5af49c9 HL |
299 | mdp5_disable(mdp5_kms); |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
304 | /* initialize command mode encoder */ | |
305 | struct drm_encoder *mdp5_cmd_encoder_init(struct drm_device *dev, | |
c71716b1 | 306 | struct mdp5_interface *intf, struct mdp5_ctl *ctl) |
d5af49c9 HL |
307 | { |
308 | struct drm_encoder *encoder = NULL; | |
309 | struct mdp5_cmd_encoder *mdp5_cmd_enc; | |
310 | int ret; | |
311 | ||
312 | if (WARN_ON((intf->type != INTF_DSI) && | |
313 | (intf->mode != MDP5_INTF_DSI_MODE_COMMAND))) { | |
314 | ret = -EINVAL; | |
315 | goto fail; | |
316 | } | |
317 | ||
318 | mdp5_cmd_enc = kzalloc(sizeof(*mdp5_cmd_enc), GFP_KERNEL); | |
319 | if (!mdp5_cmd_enc) { | |
320 | ret = -ENOMEM; | |
321 | goto fail; | |
322 | } | |
323 | ||
324 | memcpy(&mdp5_cmd_enc->intf, intf, sizeof(mdp5_cmd_enc->intf)); | |
325 | encoder = &mdp5_cmd_enc->base; | |
c71716b1 | 326 | mdp5_cmd_enc->ctl = ctl; |
d5af49c9 HL |
327 | |
328 | drm_encoder_init(dev, encoder, &mdp5_cmd_encoder_funcs, | |
13a3d91f | 329 | DRM_MODE_ENCODER_DSI, NULL); |
d5af49c9 HL |
330 | |
331 | drm_encoder_helper_add(encoder, &mdp5_cmd_encoder_helper_funcs); | |
332 | ||
333 | bs_init(mdp5_cmd_enc); | |
334 | ||
335 | return encoder; | |
336 | ||
337 | fail: | |
338 | if (encoder) | |
339 | mdp5_cmd_encoder_destroy(encoder); | |
340 | ||
341 | return ERR_PTR(ret); | |
342 | } | |
343 |