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a689554b 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 "msm_kms.h" | |
15 | #include "dsi.h" | |
16 | ||
13351cd1 HL |
17 | #define DSI_CLOCK_MASTER DSI_0 |
18 | #define DSI_CLOCK_SLAVE DSI_1 | |
19 | ||
20 | #define DSI_LEFT DSI_0 | |
21 | #define DSI_RIGHT DSI_1 | |
22 | ||
23 | /* According to the current drm framework sequence, take the encoder of | |
24 | * DSI_1 as master encoder | |
25 | */ | |
26 | #define DSI_ENCODER_MASTER DSI_1 | |
27 | #define DSI_ENCODER_SLAVE DSI_0 | |
28 | ||
a689554b HL |
29 | struct msm_dsi_manager { |
30 | struct msm_dsi *dsi[DSI_MAX]; | |
31 | ||
678565c3 | 32 | bool is_dual_dsi; |
a689554b | 33 | bool is_sync_needed; |
678565c3 | 34 | int master_dsi_link_id; |
a689554b HL |
35 | }; |
36 | ||
37 | static struct msm_dsi_manager msm_dsim_glb; | |
38 | ||
678565c3 | 39 | #define IS_DUAL_DSI() (msm_dsim_glb.is_dual_dsi) |
a689554b | 40 | #define IS_SYNC_NEEDED() (msm_dsim_glb.is_sync_needed) |
678565c3 | 41 | #define IS_MASTER_DSI_LINK(id) (msm_dsim_glb.master_dsi_link_id == id) |
a689554b HL |
42 | |
43 | static inline struct msm_dsi *dsi_mgr_get_dsi(int id) | |
44 | { | |
45 | return msm_dsim_glb.dsi[id]; | |
46 | } | |
47 | ||
48 | static inline struct msm_dsi *dsi_mgr_get_other_dsi(int id) | |
49 | { | |
50 | return msm_dsim_glb.dsi[(id + 1) % DSI_MAX]; | |
51 | } | |
52 | ||
678565c3 | 53 | static int dsi_mgr_parse_dual_dsi(struct device_node *np, int id) |
a689554b HL |
54 | { |
55 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; | |
56 | ||
678565c3 | 57 | /* We assume 2 dsi nodes have the same information of dual-dsi and |
a689554b HL |
58 | * sync-mode, and only one node specifies master in case of dual mode. |
59 | */ | |
678565c3 HL |
60 | if (!msm_dsim->is_dual_dsi) |
61 | msm_dsim->is_dual_dsi = of_property_read_bool( | |
62 | np, "qcom,dual-dsi-mode"); | |
a689554b | 63 | |
678565c3 HL |
64 | if (msm_dsim->is_dual_dsi) { |
65 | if (of_property_read_bool(np, "qcom,master-dsi")) | |
66 | msm_dsim->master_dsi_link_id = id; | |
a689554b HL |
67 | if (!msm_dsim->is_sync_needed) |
68 | msm_dsim->is_sync_needed = of_property_read_bool( | |
678565c3 | 69 | np, "qcom,sync-dual-dsi"); |
a689554b HL |
70 | } |
71 | ||
72 | return 0; | |
73 | } | |
74 | ||
57bf4338 | 75 | static int dsi_mgr_setup_components(int id) |
9d32c498 HL |
76 | { |
77 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
78 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); | |
79 | struct msm_dsi *clk_master_dsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER); | |
57bf4338 | 80 | struct msm_dsi *clk_slave_dsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE); |
9d32c498 HL |
81 | struct msm_dsi_pll *src_pll; |
82 | int ret; | |
83 | ||
678565c3 | 84 | if (!IS_DUAL_DSI()) { |
9d32c498 HL |
85 | ret = msm_dsi_host_register(msm_dsi->host, true); |
86 | if (ret) | |
87 | return ret; | |
88 | ||
57bf4338 | 89 | msm_dsi_phy_set_usecase(msm_dsi->phy, MSM_DSI_PHY_STANDALONE); |
9d32c498 | 90 | src_pll = msm_dsi_phy_get_pll(msm_dsi->phy); |
f0efc831 LA |
91 | if (IS_ERR(src_pll)) |
92 | return PTR_ERR(src_pll); | |
9d32c498 HL |
93 | ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll); |
94 | } else if (!other_dsi) { | |
95 | ret = 0; | |
96 | } else { | |
57bf4338 HL |
97 | struct msm_dsi *master_link_dsi = IS_MASTER_DSI_LINK(id) ? |
98 | msm_dsi : other_dsi; | |
99 | struct msm_dsi *slave_link_dsi = IS_MASTER_DSI_LINK(id) ? | |
100 | other_dsi : msm_dsi; | |
9d32c498 HL |
101 | /* Register slave host first, so that slave DSI device |
102 | * has a chance to probe, and do not block the master | |
103 | * DSI device's probe. | |
104 | * Also, do not check defer for the slave host, | |
105 | * because only master DSI device adds the panel to global | |
106 | * panel list. The panel's device is the master DSI device. | |
107 | */ | |
57bf4338 | 108 | ret = msm_dsi_host_register(slave_link_dsi->host, false); |
9d32c498 HL |
109 | if (ret) |
110 | return ret; | |
57bf4338 | 111 | ret = msm_dsi_host_register(master_link_dsi->host, true); |
9d32c498 HL |
112 | if (ret) |
113 | return ret; | |
114 | ||
115 | /* PLL0 is to drive both 2 DSI link clocks in Dual DSI mode. */ | |
57bf4338 HL |
116 | msm_dsi_phy_set_usecase(clk_master_dsi->phy, |
117 | MSM_DSI_PHY_MASTER); | |
118 | msm_dsi_phy_set_usecase(clk_slave_dsi->phy, | |
119 | MSM_DSI_PHY_SLAVE); | |
9d32c498 | 120 | src_pll = msm_dsi_phy_get_pll(clk_master_dsi->phy); |
f0efc831 LA |
121 | if (IS_ERR(src_pll)) |
122 | return PTR_ERR(src_pll); | |
9d32c498 HL |
123 | ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll); |
124 | if (ret) | |
125 | return ret; | |
126 | ret = msm_dsi_host_set_src_pll(other_dsi->host, src_pll); | |
127 | } | |
128 | ||
129 | return ret; | |
130 | } | |
131 | ||
b62aa70a HL |
132 | static int enable_phy(struct msm_dsi *msm_dsi, int src_pll_id, |
133 | struct msm_dsi_phy_shared_timings *shared_timings) | |
134 | { | |
135 | struct msm_dsi_phy_clk_request clk_req; | |
136 | int ret; | |
137 | ||
138 | msm_dsi_host_get_phy_clk_req(msm_dsi->host, &clk_req); | |
139 | ||
140 | ret = msm_dsi_phy_enable(msm_dsi->phy, src_pll_id, &clk_req); | |
141 | msm_dsi_phy_get_shared_timings(msm_dsi->phy, shared_timings); | |
142 | ||
143 | return ret; | |
144 | } | |
145 | ||
146 | static int | |
147 | dsi_mgr_phy_enable(int id, | |
148 | struct msm_dsi_phy_shared_timings shared_timings[DSI_MAX]) | |
149 | { | |
150 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
151 | struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER); | |
152 | struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE); | |
153 | int src_pll_id = IS_DUAL_DSI() ? DSI_CLOCK_MASTER : id; | |
154 | int ret; | |
155 | ||
156 | /* In case of dual DSI, some registers in PHY1 have been programmed | |
157 | * during PLL0 clock's set_rate. The PHY1 reset called by host1 here | |
158 | * will silently reset those PHY1 registers. Therefore we need to reset | |
159 | * and enable both PHYs before any PLL clock operation. | |
160 | */ | |
161 | if (IS_DUAL_DSI() && mdsi && sdsi) { | |
162 | if (!mdsi->phy_enabled && !sdsi->phy_enabled) { | |
163 | msm_dsi_host_reset_phy(mdsi->host); | |
164 | msm_dsi_host_reset_phy(sdsi->host); | |
165 | ||
166 | ret = enable_phy(mdsi, src_pll_id, | |
167 | &shared_timings[DSI_CLOCK_MASTER]); | |
168 | if (ret) | |
169 | return ret; | |
170 | ret = enable_phy(sdsi, src_pll_id, | |
171 | &shared_timings[DSI_CLOCK_SLAVE]); | |
172 | if (ret) { | |
173 | msm_dsi_phy_disable(mdsi->phy); | |
174 | return ret; | |
175 | } | |
176 | } | |
177 | } else { | |
a5fef535 | 178 | msm_dsi_host_reset_phy(msm_dsi->host); |
b62aa70a HL |
179 | ret = enable_phy(msm_dsi, src_pll_id, &shared_timings[id]); |
180 | if (ret) | |
181 | return ret; | |
182 | } | |
183 | ||
184 | msm_dsi->phy_enabled = true; | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
189 | static void dsi_mgr_phy_disable(int id) | |
190 | { | |
191 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
192 | struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER); | |
193 | struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE); | |
194 | ||
195 | /* disable DSI phy | |
196 | * In dual-dsi configuration, the phy should be disabled for the | |
197 | * first controller only when the second controller is disabled. | |
198 | */ | |
199 | msm_dsi->phy_enabled = false; | |
200 | if (IS_DUAL_DSI() && mdsi && sdsi) { | |
201 | if (!mdsi->phy_enabled && !sdsi->phy_enabled) { | |
202 | msm_dsi_phy_disable(sdsi->phy); | |
203 | msm_dsi_phy_disable(mdsi->phy); | |
204 | } | |
205 | } else { | |
206 | msm_dsi_phy_disable(msm_dsi->phy); | |
207 | } | |
208 | } | |
209 | ||
a689554b HL |
210 | struct dsi_connector { |
211 | struct drm_connector base; | |
212 | int id; | |
213 | }; | |
214 | ||
215 | struct dsi_bridge { | |
216 | struct drm_bridge base; | |
217 | int id; | |
218 | }; | |
219 | ||
220 | #define to_dsi_connector(x) container_of(x, struct dsi_connector, base) | |
221 | #define to_dsi_bridge(x) container_of(x, struct dsi_bridge, base) | |
222 | ||
223 | static inline int dsi_mgr_connector_get_id(struct drm_connector *connector) | |
224 | { | |
225 | struct dsi_connector *dsi_connector = to_dsi_connector(connector); | |
226 | return dsi_connector->id; | |
227 | } | |
228 | ||
229 | static int dsi_mgr_bridge_get_id(struct drm_bridge *bridge) | |
230 | { | |
231 | struct dsi_bridge *dsi_bridge = to_dsi_bridge(bridge); | |
232 | return dsi_bridge->id; | |
233 | } | |
234 | ||
235 | static enum drm_connector_status dsi_mgr_connector_detect( | |
236 | struct drm_connector *connector, bool force) | |
237 | { | |
238 | int id = dsi_mgr_connector_get_id(connector); | |
239 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
240 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); | |
241 | struct msm_drm_private *priv = connector->dev->dev_private; | |
242 | struct msm_kms *kms = priv->kms; | |
243 | ||
244 | DBG("id=%d", id); | |
245 | if (!msm_dsi->panel) { | |
246 | msm_dsi->panel = msm_dsi_host_get_panel(msm_dsi->host, | |
a9ddac9c | 247 | &msm_dsi->device_flags); |
a689554b HL |
248 | |
249 | /* There is only 1 panel in the global panel list | |
678565c3 | 250 | * for dual DSI mode. Therefore slave dsi should get |
a689554b HL |
251 | * the drm_panel instance from master dsi, and |
252 | * keep using the panel flags got from the current DSI link. | |
253 | */ | |
678565c3 HL |
254 | if (!msm_dsi->panel && IS_DUAL_DSI() && |
255 | !IS_MASTER_DSI_LINK(id) && other_dsi) | |
a689554b HL |
256 | msm_dsi->panel = msm_dsi_host_get_panel( |
257 | other_dsi->host, NULL); | |
258 | ||
9c9f6f8d AT |
259 | |
260 | if (msm_dsi->panel && kms->funcs->set_encoder_mode) { | |
261 | bool cmd_mode = !(msm_dsi->device_flags & | |
262 | MIPI_DSI_MODE_VIDEO); | |
263 | struct drm_encoder *encoder = | |
264 | msm_dsi_get_encoder(msm_dsi); | |
265 | ||
266 | kms->funcs->set_encoder_mode(kms, encoder, cmd_mode); | |
267 | } | |
268 | ||
678565c3 | 269 | if (msm_dsi->panel && IS_DUAL_DSI()) |
a689554b HL |
270 | drm_object_attach_property(&connector->base, |
271 | connector->dev->mode_config.tile_property, 0); | |
272 | ||
678565c3 HL |
273 | /* Set split display info to kms once dual DSI panel is |
274 | * connected to both hosts. | |
a689554b | 275 | */ |
678565c3 | 276 | if (msm_dsi->panel && IS_DUAL_DSI() && |
a689554b | 277 | other_dsi && other_dsi->panel) { |
a9ddac9c | 278 | bool cmd_mode = !(msm_dsi->device_flags & |
a689554b HL |
279 | MIPI_DSI_MODE_VIDEO); |
280 | struct drm_encoder *encoder = msm_dsi_get_encoder( | |
281 | dsi_mgr_get_dsi(DSI_ENCODER_MASTER)); | |
282 | struct drm_encoder *slave_enc = msm_dsi_get_encoder( | |
283 | dsi_mgr_get_dsi(DSI_ENCODER_SLAVE)); | |
284 | ||
285 | if (kms->funcs->set_split_display) | |
286 | kms->funcs->set_split_display(kms, encoder, | |
287 | slave_enc, cmd_mode); | |
288 | else | |
678565c3 | 289 | pr_err("mdp does not support dual DSI\n"); |
a689554b HL |
290 | } |
291 | } | |
292 | ||
293 | return msm_dsi->panel ? connector_status_connected : | |
294 | connector_status_disconnected; | |
295 | } | |
296 | ||
297 | static void dsi_mgr_connector_destroy(struct drm_connector *connector) | |
298 | { | |
8208ed93 AT |
299 | struct dsi_connector *dsi_connector = to_dsi_connector(connector); |
300 | ||
a689554b | 301 | DBG(""); |
8208ed93 | 302 | |
a689554b | 303 | drm_connector_cleanup(connector); |
8208ed93 AT |
304 | |
305 | kfree(dsi_connector); | |
a689554b HL |
306 | } |
307 | ||
308 | static void dsi_dual_connector_fix_modes(struct drm_connector *connector) | |
309 | { | |
310 | struct drm_display_mode *mode, *m; | |
311 | ||
312 | /* Only support left-right mode */ | |
313 | list_for_each_entry_safe(mode, m, &connector->probed_modes, head) { | |
314 | mode->clock >>= 1; | |
315 | mode->hdisplay >>= 1; | |
316 | mode->hsync_start >>= 1; | |
317 | mode->hsync_end >>= 1; | |
318 | mode->htotal >>= 1; | |
319 | drm_mode_set_name(mode); | |
320 | } | |
321 | } | |
322 | ||
323 | static int dsi_dual_connector_tile_init( | |
324 | struct drm_connector *connector, int id) | |
325 | { | |
326 | struct drm_display_mode *mode; | |
327 | /* Fake topology id */ | |
328 | char topo_id[8] = {'M', 'S', 'M', 'D', 'U', 'D', 'S', 'I'}; | |
329 | ||
330 | if (connector->tile_group) { | |
331 | DBG("Tile property has been initialized"); | |
332 | return 0; | |
333 | } | |
334 | ||
335 | /* Use the first mode only for now */ | |
336 | mode = list_first_entry(&connector->probed_modes, | |
337 | struct drm_display_mode, | |
338 | head); | |
339 | if (!mode) | |
340 | return -EINVAL; | |
341 | ||
342 | connector->tile_group = drm_mode_get_tile_group( | |
343 | connector->dev, topo_id); | |
344 | if (!connector->tile_group) | |
345 | connector->tile_group = drm_mode_create_tile_group( | |
346 | connector->dev, topo_id); | |
347 | if (!connector->tile_group) { | |
348 | pr_err("%s: failed to create tile group\n", __func__); | |
349 | return -ENOMEM; | |
350 | } | |
351 | ||
352 | connector->has_tile = true; | |
353 | connector->tile_is_single_monitor = true; | |
354 | ||
355 | /* mode has been fixed */ | |
356 | connector->tile_h_size = mode->hdisplay; | |
357 | connector->tile_v_size = mode->vdisplay; | |
358 | ||
359 | /* Only support left-right mode */ | |
360 | connector->num_h_tile = 2; | |
361 | connector->num_v_tile = 1; | |
362 | ||
363 | connector->tile_v_loc = 0; | |
364 | connector->tile_h_loc = (id == DSI_RIGHT) ? 1 : 0; | |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
369 | static int dsi_mgr_connector_get_modes(struct drm_connector *connector) | |
370 | { | |
371 | int id = dsi_mgr_connector_get_id(connector); | |
372 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
373 | struct drm_panel *panel = msm_dsi->panel; | |
374 | int ret, num; | |
375 | ||
376 | if (!panel) | |
377 | return 0; | |
378 | ||
379 | /* Since we have 2 connectors, but only 1 drm_panel in dual DSI mode, | |
380 | * panel should not attach to any connector. | |
381 | * Only temporarily attach panel to the current connector here, | |
382 | * to let panel set mode to this connector. | |
383 | */ | |
384 | drm_panel_attach(panel, connector); | |
385 | num = drm_panel_get_modes(panel); | |
386 | drm_panel_detach(panel); | |
387 | if (!num) | |
388 | return 0; | |
389 | ||
678565c3 | 390 | if (IS_DUAL_DSI()) { |
a689554b HL |
391 | /* report half resolution to user */ |
392 | dsi_dual_connector_fix_modes(connector); | |
393 | ret = dsi_dual_connector_tile_init(connector, id); | |
394 | if (ret) | |
395 | return ret; | |
396 | ret = drm_mode_connector_set_tile_property(connector); | |
397 | if (ret) { | |
398 | pr_err("%s: set tile property failed, %d\n", | |
399 | __func__, ret); | |
400 | return ret; | |
401 | } | |
402 | } | |
403 | ||
404 | return num; | |
405 | } | |
406 | ||
407 | static int dsi_mgr_connector_mode_valid(struct drm_connector *connector, | |
408 | struct drm_display_mode *mode) | |
409 | { | |
410 | int id = dsi_mgr_connector_get_id(connector); | |
411 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
412 | struct drm_encoder *encoder = msm_dsi_get_encoder(msm_dsi); | |
413 | struct msm_drm_private *priv = connector->dev->dev_private; | |
414 | struct msm_kms *kms = priv->kms; | |
415 | long actual, requested; | |
416 | ||
417 | DBG(""); | |
418 | requested = 1000 * mode->clock; | |
419 | actual = kms->funcs->round_pixclk(kms, requested, encoder); | |
420 | ||
421 | DBG("requested=%ld, actual=%ld", requested, actual); | |
422 | if (actual != requested) | |
423 | return MODE_CLOCK_RANGE; | |
424 | ||
425 | return MODE_OK; | |
426 | } | |
427 | ||
428 | static struct drm_encoder * | |
429 | dsi_mgr_connector_best_encoder(struct drm_connector *connector) | |
430 | { | |
431 | int id = dsi_mgr_connector_get_id(connector); | |
432 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
433 | ||
434 | DBG(""); | |
435 | return msm_dsi_get_encoder(msm_dsi); | |
436 | } | |
437 | ||
438 | static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge) | |
439 | { | |
440 | int id = dsi_mgr_bridge_get_id(bridge); | |
441 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
442 | struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1); | |
443 | struct mipi_dsi_host *host = msm_dsi->host; | |
444 | struct drm_panel *panel = msm_dsi->panel; | |
b62aa70a | 445 | struct msm_dsi_phy_shared_timings phy_shared_timings[DSI_MAX]; |
678565c3 | 446 | bool is_dual_dsi = IS_DUAL_DSI(); |
a689554b HL |
447 | int ret; |
448 | ||
449 | DBG("id=%d", id); | |
b62aa70a | 450 | if (!msm_dsi_device_connected(msm_dsi)) |
a689554b HL |
451 | return; |
452 | ||
b62aa70a HL |
453 | ret = dsi_mgr_phy_enable(id, phy_shared_timings); |
454 | if (ret) | |
455 | goto phy_en_fail; | |
456 | ||
457 | /* Do nothing with the host if it is DSI 1 in case of dual DSI */ | |
458 | if (is_dual_dsi && (DSI_1 == id)) | |
459 | return; | |
460 | ||
461 | ret = msm_dsi_host_power_on(host, &phy_shared_timings[id]); | |
a689554b HL |
462 | if (ret) { |
463 | pr_err("%s: power on host %d failed, %d\n", __func__, id, ret); | |
464 | goto host_on_fail; | |
465 | } | |
466 | ||
678565c3 | 467 | if (is_dual_dsi && msm_dsi1) { |
b62aa70a HL |
468 | ret = msm_dsi_host_power_on(msm_dsi1->host, |
469 | &phy_shared_timings[DSI_1]); | |
a689554b HL |
470 | if (ret) { |
471 | pr_err("%s: power on host1 failed, %d\n", | |
472 | __func__, ret); | |
473 | goto host1_on_fail; | |
474 | } | |
475 | } | |
476 | ||
477 | /* Always call panel functions once, because even for dual panels, | |
478 | * there is only one drm_panel instance. | |
479 | */ | |
09992e4d AT |
480 | if (panel) { |
481 | ret = drm_panel_prepare(panel); | |
482 | if (ret) { | |
483 | pr_err("%s: prepare panel %d failed, %d\n", __func__, | |
484 | id, ret); | |
485 | goto panel_prep_fail; | |
486 | } | |
a689554b HL |
487 | } |
488 | ||
489 | ret = msm_dsi_host_enable(host); | |
490 | if (ret) { | |
491 | pr_err("%s: enable host %d failed, %d\n", __func__, id, ret); | |
492 | goto host_en_fail; | |
493 | } | |
494 | ||
678565c3 | 495 | if (is_dual_dsi && msm_dsi1) { |
a689554b HL |
496 | ret = msm_dsi_host_enable(msm_dsi1->host); |
497 | if (ret) { | |
498 | pr_err("%s: enable host1 failed, %d\n", __func__, ret); | |
499 | goto host1_en_fail; | |
500 | } | |
501 | } | |
502 | ||
09992e4d AT |
503 | if (panel) { |
504 | ret = drm_panel_enable(panel); | |
505 | if (ret) { | |
506 | pr_err("%s: enable panel %d failed, %d\n", __func__, id, | |
507 | ret); | |
508 | goto panel_en_fail; | |
509 | } | |
a689554b HL |
510 | } |
511 | ||
512 | return; | |
513 | ||
514 | panel_en_fail: | |
678565c3 | 515 | if (is_dual_dsi && msm_dsi1) |
a689554b HL |
516 | msm_dsi_host_disable(msm_dsi1->host); |
517 | host1_en_fail: | |
518 | msm_dsi_host_disable(host); | |
519 | host_en_fail: | |
09992e4d AT |
520 | if (panel) |
521 | drm_panel_unprepare(panel); | |
a689554b | 522 | panel_prep_fail: |
678565c3 | 523 | if (is_dual_dsi && msm_dsi1) |
a689554b HL |
524 | msm_dsi_host_power_off(msm_dsi1->host); |
525 | host1_on_fail: | |
526 | msm_dsi_host_power_off(host); | |
527 | host_on_fail: | |
b62aa70a HL |
528 | dsi_mgr_phy_disable(id); |
529 | phy_en_fail: | |
a689554b HL |
530 | return; |
531 | } | |
532 | ||
533 | static void dsi_mgr_bridge_enable(struct drm_bridge *bridge) | |
534 | { | |
535 | DBG(""); | |
536 | } | |
537 | ||
538 | static void dsi_mgr_bridge_disable(struct drm_bridge *bridge) | |
539 | { | |
540 | DBG(""); | |
541 | } | |
542 | ||
543 | static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge) | |
544 | { | |
545 | int id = dsi_mgr_bridge_get_id(bridge); | |
546 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
547 | struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1); | |
548 | struct mipi_dsi_host *host = msm_dsi->host; | |
549 | struct drm_panel *panel = msm_dsi->panel; | |
678565c3 | 550 | bool is_dual_dsi = IS_DUAL_DSI(); |
a689554b HL |
551 | int ret; |
552 | ||
553 | DBG("id=%d", id); | |
554 | ||
b62aa70a | 555 | if (!msm_dsi_device_connected(msm_dsi)) |
a689554b HL |
556 | return; |
557 | ||
b62aa70a HL |
558 | /* |
559 | * Do nothing with the host if it is DSI 1 in case of dual DSI. | |
560 | * It is safe to call dsi_mgr_phy_disable() here because a single PHY | |
561 | * won't be diabled until both PHYs request disable. | |
562 | */ | |
563 | if (is_dual_dsi && (DSI_1 == id)) | |
564 | goto disable_phy; | |
565 | ||
09992e4d AT |
566 | if (panel) { |
567 | ret = drm_panel_disable(panel); | |
568 | if (ret) | |
569 | pr_err("%s: Panel %d OFF failed, %d\n", __func__, id, | |
570 | ret); | |
571 | } | |
a689554b HL |
572 | |
573 | ret = msm_dsi_host_disable(host); | |
574 | if (ret) | |
575 | pr_err("%s: host %d disable failed, %d\n", __func__, id, ret); | |
576 | ||
678565c3 | 577 | if (is_dual_dsi && msm_dsi1) { |
a689554b HL |
578 | ret = msm_dsi_host_disable(msm_dsi1->host); |
579 | if (ret) | |
580 | pr_err("%s: host1 disable failed, %d\n", __func__, ret); | |
581 | } | |
582 | ||
09992e4d AT |
583 | if (panel) { |
584 | ret = drm_panel_unprepare(panel); | |
585 | if (ret) | |
586 | pr_err("%s: Panel %d unprepare failed,%d\n", __func__, | |
587 | id, ret); | |
588 | } | |
a689554b HL |
589 | |
590 | ret = msm_dsi_host_power_off(host); | |
591 | if (ret) | |
592 | pr_err("%s: host %d power off failed,%d\n", __func__, id, ret); | |
593 | ||
678565c3 | 594 | if (is_dual_dsi && msm_dsi1) { |
a689554b HL |
595 | ret = msm_dsi_host_power_off(msm_dsi1->host); |
596 | if (ret) | |
597 | pr_err("%s: host1 power off failed, %d\n", | |
598 | __func__, ret); | |
599 | } | |
b62aa70a HL |
600 | |
601 | disable_phy: | |
602 | dsi_mgr_phy_disable(id); | |
a689554b HL |
603 | } |
604 | ||
605 | static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge, | |
606 | struct drm_display_mode *mode, | |
607 | struct drm_display_mode *adjusted_mode) | |
608 | { | |
609 | int id = dsi_mgr_bridge_get_id(bridge); | |
610 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
611 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); | |
612 | struct mipi_dsi_host *host = msm_dsi->host; | |
678565c3 | 613 | bool is_dual_dsi = IS_DUAL_DSI(); |
a689554b HL |
614 | |
615 | DBG("set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", | |
616 | mode->base.id, mode->name, | |
617 | mode->vrefresh, mode->clock, | |
618 | mode->hdisplay, mode->hsync_start, | |
619 | mode->hsync_end, mode->htotal, | |
620 | mode->vdisplay, mode->vsync_start, | |
621 | mode->vsync_end, mode->vtotal, | |
622 | mode->type, mode->flags); | |
623 | ||
678565c3 | 624 | if (is_dual_dsi && (DSI_1 == id)) |
a689554b HL |
625 | return; |
626 | ||
627 | msm_dsi_host_set_display_mode(host, adjusted_mode); | |
678565c3 | 628 | if (is_dual_dsi && other_dsi) |
a689554b HL |
629 | msm_dsi_host_set_display_mode(other_dsi->host, adjusted_mode); |
630 | } | |
631 | ||
632 | static const struct drm_connector_funcs dsi_mgr_connector_funcs = { | |
a689554b HL |
633 | .detect = dsi_mgr_connector_detect, |
634 | .fill_modes = drm_helper_probe_single_connector_modes, | |
635 | .destroy = dsi_mgr_connector_destroy, | |
636 | .reset = drm_atomic_helper_connector_reset, | |
637 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, | |
638 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, | |
639 | }; | |
640 | ||
641 | static const struct drm_connector_helper_funcs dsi_mgr_conn_helper_funcs = { | |
642 | .get_modes = dsi_mgr_connector_get_modes, | |
643 | .mode_valid = dsi_mgr_connector_mode_valid, | |
644 | .best_encoder = dsi_mgr_connector_best_encoder, | |
645 | }; | |
646 | ||
647 | static const struct drm_bridge_funcs dsi_mgr_bridge_funcs = { | |
648 | .pre_enable = dsi_mgr_bridge_pre_enable, | |
649 | .enable = dsi_mgr_bridge_enable, | |
650 | .disable = dsi_mgr_bridge_disable, | |
651 | .post_disable = dsi_mgr_bridge_post_disable, | |
652 | .mode_set = dsi_mgr_bridge_mode_set, | |
653 | }; | |
654 | ||
c118e290 | 655 | /* initialize connector when we're connected to a drm_panel */ |
a689554b HL |
656 | struct drm_connector *msm_dsi_manager_connector_init(u8 id) |
657 | { | |
658 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
659 | struct drm_connector *connector = NULL; | |
660 | struct dsi_connector *dsi_connector; | |
97e00119 | 661 | int ret; |
a689554b | 662 | |
8208ed93 AT |
663 | dsi_connector = kzalloc(sizeof(*dsi_connector), GFP_KERNEL); |
664 | if (!dsi_connector) | |
665 | return ERR_PTR(-ENOMEM); | |
a689554b HL |
666 | |
667 | dsi_connector->id = id; | |
668 | ||
669 | connector = &dsi_connector->base; | |
670 | ||
671 | ret = drm_connector_init(msm_dsi->dev, connector, | |
672 | &dsi_mgr_connector_funcs, DRM_MODE_CONNECTOR_DSI); | |
673 | if (ret) | |
8208ed93 | 674 | return ERR_PTR(ret); |
a689554b HL |
675 | |
676 | drm_connector_helper_add(connector, &dsi_mgr_conn_helper_funcs); | |
677 | ||
678 | /* Enable HPD to let hpd event is handled | |
679 | * when panel is attached to the host. | |
680 | */ | |
681 | connector->polled = DRM_CONNECTOR_POLL_HPD; | |
682 | ||
683 | /* Display driver doesn't support interlace now. */ | |
684 | connector->interlace_allowed = 0; | |
685 | connector->doublescan_allowed = 0; | |
686 | ||
cde4c44d | 687 | drm_connector_attach_encoder(connector, msm_dsi->encoder); |
6f6b2879 | 688 | |
a689554b | 689 | return connector; |
a689554b HL |
690 | } |
691 | ||
692 | /* initialize bridge */ | |
693 | struct drm_bridge *msm_dsi_manager_bridge_init(u8 id) | |
694 | { | |
695 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
696 | struct drm_bridge *bridge = NULL; | |
697 | struct dsi_bridge *dsi_bridge; | |
3bb80f24 | 698 | struct drm_encoder *encoder; |
a689554b HL |
699 | int ret; |
700 | ||
701 | dsi_bridge = devm_kzalloc(msm_dsi->dev->dev, | |
702 | sizeof(*dsi_bridge), GFP_KERNEL); | |
703 | if (!dsi_bridge) { | |
704 | ret = -ENOMEM; | |
705 | goto fail; | |
706 | } | |
707 | ||
708 | dsi_bridge->id = id; | |
709 | ||
97e00119 | 710 | encoder = msm_dsi->encoder; |
3bb80f24 | 711 | |
a689554b HL |
712 | bridge = &dsi_bridge->base; |
713 | bridge->funcs = &dsi_mgr_bridge_funcs; | |
714 | ||
3bb80f24 | 715 | ret = drm_bridge_attach(encoder, bridge, NULL); |
a689554b HL |
716 | if (ret) |
717 | goto fail; | |
718 | ||
719 | return bridge; | |
720 | ||
721 | fail: | |
722 | if (bridge) | |
723 | msm_dsi_manager_bridge_destroy(bridge); | |
724 | ||
725 | return ERR_PTR(ret); | |
726 | } | |
727 | ||
c118e290 AT |
728 | struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id) |
729 | { | |
730 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
731 | struct drm_device *dev = msm_dsi->dev; | |
732 | struct drm_encoder *encoder; | |
733 | struct drm_bridge *int_bridge, *ext_bridge; | |
734 | struct drm_connector *connector; | |
735 | struct list_head *connector_list; | |
736 | ||
737 | int_bridge = msm_dsi->bridge; | |
738 | ext_bridge = msm_dsi->external_bridge = | |
739 | msm_dsi_host_get_bridge(msm_dsi->host); | |
740 | ||
97e00119 | 741 | encoder = msm_dsi->encoder; |
c118e290 AT |
742 | |
743 | /* link the internal dsi bridge to the external bridge */ | |
3bb80f24 | 744 | drm_bridge_attach(encoder, ext_bridge, int_bridge); |
c118e290 AT |
745 | |
746 | /* | |
747 | * we need the drm_connector created by the external bridge | |
748 | * driver (or someone else) to feed it to our driver's | |
749 | * priv->connector[] list, mainly for msm_fbdev_init() | |
750 | */ | |
751 | connector_list = &dev->mode_config.connector_list; | |
752 | ||
753 | list_for_each_entry(connector, connector_list, head) { | |
f8222409 VS |
754 | if (drm_connector_has_possible_encoder(connector, encoder)) |
755 | return connector; | |
c118e290 AT |
756 | } |
757 | ||
758 | return ERR_PTR(-ENODEV); | |
759 | } | |
760 | ||
a689554b HL |
761 | void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge) |
762 | { | |
763 | } | |
764 | ||
a689554b HL |
765 | int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg) |
766 | { | |
767 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
768 | struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0); | |
769 | struct mipi_dsi_host *host = msm_dsi->host; | |
770 | bool is_read = (msg->rx_buf && msg->rx_len); | |
771 | bool need_sync = (IS_SYNC_NEEDED() && !is_read); | |
772 | int ret; | |
773 | ||
774 | if (!msg->tx_buf || !msg->tx_len) | |
775 | return 0; | |
776 | ||
777 | /* In dual master case, panel requires the same commands sent to | |
778 | * both DSI links. Host issues the command trigger to both links | |
779 | * when DSI_1 calls the cmd transfer function, no matter it happens | |
780 | * before or after DSI_0 cmd transfer. | |
781 | */ | |
782 | if (need_sync && (id == DSI_0)) | |
783 | return is_read ? msg->rx_len : msg->tx_len; | |
784 | ||
785 | if (need_sync && msm_dsi0) { | |
786 | ret = msm_dsi_host_xfer_prepare(msm_dsi0->host, msg); | |
787 | if (ret) { | |
788 | pr_err("%s: failed to prepare non-trigger host, %d\n", | |
789 | __func__, ret); | |
790 | return ret; | |
791 | } | |
792 | } | |
793 | ret = msm_dsi_host_xfer_prepare(host, msg); | |
794 | if (ret) { | |
795 | pr_err("%s: failed to prepare host, %d\n", __func__, ret); | |
796 | goto restore_host0; | |
797 | } | |
798 | ||
799 | ret = is_read ? msm_dsi_host_cmd_rx(host, msg) : | |
800 | msm_dsi_host_cmd_tx(host, msg); | |
801 | ||
802 | msm_dsi_host_xfer_restore(host, msg); | |
803 | ||
804 | restore_host0: | |
805 | if (need_sync && msm_dsi0) | |
806 | msm_dsi_host_xfer_restore(msm_dsi0->host, msg); | |
807 | ||
808 | return ret; | |
809 | } | |
810 | ||
4ff9d4cb | 811 | bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len) |
a689554b HL |
812 | { |
813 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
814 | struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0); | |
815 | struct mipi_dsi_host *host = msm_dsi->host; | |
816 | ||
817 | if (IS_SYNC_NEEDED() && (id == DSI_0)) | |
818 | return false; | |
819 | ||
820 | if (IS_SYNC_NEEDED() && msm_dsi0) | |
4ff9d4cb | 821 | msm_dsi_host_cmd_xfer_commit(msm_dsi0->host, dma_base, len); |
a689554b | 822 | |
4ff9d4cb | 823 | msm_dsi_host_cmd_xfer_commit(host, dma_base, len); |
a689554b HL |
824 | |
825 | return true; | |
826 | } | |
827 | ||
9c9f6f8d AT |
828 | void msm_dsi_manager_attach_dsi_device(int id, u32 device_flags) |
829 | { | |
830 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
831 | struct drm_device *dev = msm_dsi->dev; | |
832 | struct msm_drm_private *priv; | |
833 | struct msm_kms *kms; | |
834 | struct drm_encoder *encoder; | |
835 | ||
836 | /* | |
837 | * drm_device pointer is assigned to msm_dsi only in the modeset_init | |
838 | * path. If mipi_dsi_attach() happens in DSI driver's probe path | |
839 | * (generally the case when we're connected to a drm_panel of the type | |
840 | * mipi_dsi_device), this would be NULL. In such cases, try to set the | |
841 | * encoder mode in the DSI connector's detect() op. | |
842 | */ | |
843 | if (!dev) | |
844 | return; | |
845 | ||
846 | priv = dev->dev_private; | |
847 | kms = priv->kms; | |
848 | encoder = msm_dsi_get_encoder(msm_dsi); | |
849 | ||
850 | if (encoder && kms->funcs->set_encoder_mode) | |
851 | if (!(device_flags & MIPI_DSI_MODE_VIDEO)) | |
852 | kms->funcs->set_encoder_mode(kms, encoder, true); | |
853 | } | |
854 | ||
a689554b HL |
855 | int msm_dsi_manager_register(struct msm_dsi *msm_dsi) |
856 | { | |
857 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; | |
858 | int id = msm_dsi->id; | |
a689554b HL |
859 | int ret; |
860 | ||
6e1787cf | 861 | if (id >= DSI_MAX) { |
a689554b HL |
862 | pr_err("%s: invalid id %d\n", __func__, id); |
863 | return -EINVAL; | |
864 | } | |
865 | ||
866 | if (msm_dsim->dsi[id]) { | |
867 | pr_err("%s: dsi%d already registered\n", __func__, id); | |
868 | return -EBUSY; | |
869 | } | |
870 | ||
871 | msm_dsim->dsi[id] = msm_dsi; | |
872 | ||
678565c3 | 873 | ret = dsi_mgr_parse_dual_dsi(msm_dsi->pdev->dev.of_node, id); |
a689554b | 874 | if (ret) { |
678565c3 | 875 | pr_err("%s: failed to parse dual DSI info\n", __func__); |
9d32c498 | 876 | goto fail; |
a689554b HL |
877 | } |
878 | ||
57bf4338 | 879 | ret = dsi_mgr_setup_components(id); |
9d32c498 HL |
880 | if (ret) { |
881 | pr_err("%s: failed to register mipi dsi host for DSI %d\n", | |
882 | __func__, id); | |
883 | goto fail; | |
a689554b HL |
884 | } |
885 | ||
9d32c498 HL |
886 | return 0; |
887 | ||
888 | fail: | |
889 | msm_dsim->dsi[id] = NULL; | |
a689554b HL |
890 | return ret; |
891 | } | |
892 | ||
893 | void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi) | |
894 | { | |
895 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; | |
896 | ||
897 | if (msm_dsi->host) | |
898 | msm_dsi_host_unregister(msm_dsi->host); | |
899 | msm_dsim->dsi[msm_dsi->id] = NULL; | |
900 | } | |
901 |