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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 HL |
90 | src_pll = msm_dsi_phy_get_pll(msm_dsi->phy); |
91 | ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll); | |
92 | } else if (!other_dsi) { | |
93 | ret = 0; | |
94 | } else { | |
57bf4338 HL |
95 | struct msm_dsi *master_link_dsi = IS_MASTER_DSI_LINK(id) ? |
96 | msm_dsi : other_dsi; | |
97 | struct msm_dsi *slave_link_dsi = IS_MASTER_DSI_LINK(id) ? | |
98 | other_dsi : msm_dsi; | |
9d32c498 HL |
99 | /* Register slave host first, so that slave DSI device |
100 | * has a chance to probe, and do not block the master | |
101 | * DSI device's probe. | |
102 | * Also, do not check defer for the slave host, | |
103 | * because only master DSI device adds the panel to global | |
104 | * panel list. The panel's device is the master DSI device. | |
105 | */ | |
57bf4338 | 106 | ret = msm_dsi_host_register(slave_link_dsi->host, false); |
9d32c498 HL |
107 | if (ret) |
108 | return ret; | |
57bf4338 | 109 | ret = msm_dsi_host_register(master_link_dsi->host, true); |
9d32c498 HL |
110 | if (ret) |
111 | return ret; | |
112 | ||
113 | /* PLL0 is to drive both 2 DSI link clocks in Dual DSI mode. */ | |
57bf4338 HL |
114 | msm_dsi_phy_set_usecase(clk_master_dsi->phy, |
115 | MSM_DSI_PHY_MASTER); | |
116 | msm_dsi_phy_set_usecase(clk_slave_dsi->phy, | |
117 | MSM_DSI_PHY_SLAVE); | |
9d32c498 HL |
118 | src_pll = msm_dsi_phy_get_pll(clk_master_dsi->phy); |
119 | ret = msm_dsi_host_set_src_pll(msm_dsi->host, src_pll); | |
120 | if (ret) | |
121 | return ret; | |
122 | ret = msm_dsi_host_set_src_pll(other_dsi->host, src_pll); | |
123 | } | |
124 | ||
125 | return ret; | |
126 | } | |
127 | ||
b62aa70a HL |
128 | static int enable_phy(struct msm_dsi *msm_dsi, int src_pll_id, |
129 | struct msm_dsi_phy_shared_timings *shared_timings) | |
130 | { | |
131 | struct msm_dsi_phy_clk_request clk_req; | |
132 | int ret; | |
133 | ||
134 | msm_dsi_host_get_phy_clk_req(msm_dsi->host, &clk_req); | |
135 | ||
136 | ret = msm_dsi_phy_enable(msm_dsi->phy, src_pll_id, &clk_req); | |
137 | msm_dsi_phy_get_shared_timings(msm_dsi->phy, shared_timings); | |
138 | ||
139 | return ret; | |
140 | } | |
141 | ||
142 | static int | |
143 | dsi_mgr_phy_enable(int id, | |
144 | struct msm_dsi_phy_shared_timings shared_timings[DSI_MAX]) | |
145 | { | |
146 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
147 | struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER); | |
148 | struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE); | |
149 | int src_pll_id = IS_DUAL_DSI() ? DSI_CLOCK_MASTER : id; | |
150 | int ret; | |
151 | ||
152 | /* In case of dual DSI, some registers in PHY1 have been programmed | |
153 | * during PLL0 clock's set_rate. The PHY1 reset called by host1 here | |
154 | * will silently reset those PHY1 registers. Therefore we need to reset | |
155 | * and enable both PHYs before any PLL clock operation. | |
156 | */ | |
157 | if (IS_DUAL_DSI() && mdsi && sdsi) { | |
158 | if (!mdsi->phy_enabled && !sdsi->phy_enabled) { | |
159 | msm_dsi_host_reset_phy(mdsi->host); | |
160 | msm_dsi_host_reset_phy(sdsi->host); | |
161 | ||
162 | ret = enable_phy(mdsi, src_pll_id, | |
163 | &shared_timings[DSI_CLOCK_MASTER]); | |
164 | if (ret) | |
165 | return ret; | |
166 | ret = enable_phy(sdsi, src_pll_id, | |
167 | &shared_timings[DSI_CLOCK_SLAVE]); | |
168 | if (ret) { | |
169 | msm_dsi_phy_disable(mdsi->phy); | |
170 | return ret; | |
171 | } | |
172 | } | |
173 | } else { | |
a5fef535 | 174 | msm_dsi_host_reset_phy(msm_dsi->host); |
b62aa70a HL |
175 | ret = enable_phy(msm_dsi, src_pll_id, &shared_timings[id]); |
176 | if (ret) | |
177 | return ret; | |
178 | } | |
179 | ||
180 | msm_dsi->phy_enabled = true; | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
185 | static void dsi_mgr_phy_disable(int id) | |
186 | { | |
187 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
188 | struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER); | |
189 | struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE); | |
190 | ||
191 | /* disable DSI phy | |
192 | * In dual-dsi configuration, the phy should be disabled for the | |
193 | * first controller only when the second controller is disabled. | |
194 | */ | |
195 | msm_dsi->phy_enabled = false; | |
196 | if (IS_DUAL_DSI() && mdsi && sdsi) { | |
197 | if (!mdsi->phy_enabled && !sdsi->phy_enabled) { | |
198 | msm_dsi_phy_disable(sdsi->phy); | |
199 | msm_dsi_phy_disable(mdsi->phy); | |
200 | } | |
201 | } else { | |
202 | msm_dsi_phy_disable(msm_dsi->phy); | |
203 | } | |
204 | } | |
205 | ||
a689554b HL |
206 | struct dsi_connector { |
207 | struct drm_connector base; | |
208 | int id; | |
209 | }; | |
210 | ||
211 | struct dsi_bridge { | |
212 | struct drm_bridge base; | |
213 | int id; | |
214 | }; | |
215 | ||
216 | #define to_dsi_connector(x) container_of(x, struct dsi_connector, base) | |
217 | #define to_dsi_bridge(x) container_of(x, struct dsi_bridge, base) | |
218 | ||
219 | static inline int dsi_mgr_connector_get_id(struct drm_connector *connector) | |
220 | { | |
221 | struct dsi_connector *dsi_connector = to_dsi_connector(connector); | |
222 | return dsi_connector->id; | |
223 | } | |
224 | ||
225 | static int dsi_mgr_bridge_get_id(struct drm_bridge *bridge) | |
226 | { | |
227 | struct dsi_bridge *dsi_bridge = to_dsi_bridge(bridge); | |
228 | return dsi_bridge->id; | |
229 | } | |
230 | ||
231 | static enum drm_connector_status dsi_mgr_connector_detect( | |
232 | struct drm_connector *connector, bool force) | |
233 | { | |
234 | int id = dsi_mgr_connector_get_id(connector); | |
235 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
236 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); | |
237 | struct msm_drm_private *priv = connector->dev->dev_private; | |
238 | struct msm_kms *kms = priv->kms; | |
239 | ||
240 | DBG("id=%d", id); | |
241 | if (!msm_dsi->panel) { | |
242 | msm_dsi->panel = msm_dsi_host_get_panel(msm_dsi->host, | |
a9ddac9c | 243 | &msm_dsi->device_flags); |
a689554b HL |
244 | |
245 | /* There is only 1 panel in the global panel list | |
678565c3 | 246 | * for dual DSI mode. Therefore slave dsi should get |
a689554b HL |
247 | * the drm_panel instance from master dsi, and |
248 | * keep using the panel flags got from the current DSI link. | |
249 | */ | |
678565c3 HL |
250 | if (!msm_dsi->panel && IS_DUAL_DSI() && |
251 | !IS_MASTER_DSI_LINK(id) && other_dsi) | |
a689554b HL |
252 | msm_dsi->panel = msm_dsi_host_get_panel( |
253 | other_dsi->host, NULL); | |
254 | ||
9c9f6f8d AT |
255 | |
256 | if (msm_dsi->panel && kms->funcs->set_encoder_mode) { | |
257 | bool cmd_mode = !(msm_dsi->device_flags & | |
258 | MIPI_DSI_MODE_VIDEO); | |
259 | struct drm_encoder *encoder = | |
260 | msm_dsi_get_encoder(msm_dsi); | |
261 | ||
262 | kms->funcs->set_encoder_mode(kms, encoder, cmd_mode); | |
263 | } | |
264 | ||
678565c3 | 265 | if (msm_dsi->panel && IS_DUAL_DSI()) |
a689554b HL |
266 | drm_object_attach_property(&connector->base, |
267 | connector->dev->mode_config.tile_property, 0); | |
268 | ||
678565c3 HL |
269 | /* Set split display info to kms once dual DSI panel is |
270 | * connected to both hosts. | |
a689554b | 271 | */ |
678565c3 | 272 | if (msm_dsi->panel && IS_DUAL_DSI() && |
a689554b | 273 | other_dsi && other_dsi->panel) { |
a9ddac9c | 274 | bool cmd_mode = !(msm_dsi->device_flags & |
a689554b HL |
275 | MIPI_DSI_MODE_VIDEO); |
276 | struct drm_encoder *encoder = msm_dsi_get_encoder( | |
277 | dsi_mgr_get_dsi(DSI_ENCODER_MASTER)); | |
278 | struct drm_encoder *slave_enc = msm_dsi_get_encoder( | |
279 | dsi_mgr_get_dsi(DSI_ENCODER_SLAVE)); | |
280 | ||
281 | if (kms->funcs->set_split_display) | |
282 | kms->funcs->set_split_display(kms, encoder, | |
283 | slave_enc, cmd_mode); | |
284 | else | |
678565c3 | 285 | pr_err("mdp does not support dual DSI\n"); |
a689554b HL |
286 | } |
287 | } | |
288 | ||
289 | return msm_dsi->panel ? connector_status_connected : | |
290 | connector_status_disconnected; | |
291 | } | |
292 | ||
293 | static void dsi_mgr_connector_destroy(struct drm_connector *connector) | |
294 | { | |
8208ed93 AT |
295 | struct dsi_connector *dsi_connector = to_dsi_connector(connector); |
296 | ||
a689554b | 297 | DBG(""); |
8208ed93 | 298 | |
a689554b | 299 | drm_connector_cleanup(connector); |
8208ed93 AT |
300 | |
301 | kfree(dsi_connector); | |
a689554b HL |
302 | } |
303 | ||
304 | static void dsi_dual_connector_fix_modes(struct drm_connector *connector) | |
305 | { | |
306 | struct drm_display_mode *mode, *m; | |
307 | ||
308 | /* Only support left-right mode */ | |
309 | list_for_each_entry_safe(mode, m, &connector->probed_modes, head) { | |
310 | mode->clock >>= 1; | |
311 | mode->hdisplay >>= 1; | |
312 | mode->hsync_start >>= 1; | |
313 | mode->hsync_end >>= 1; | |
314 | mode->htotal >>= 1; | |
315 | drm_mode_set_name(mode); | |
316 | } | |
317 | } | |
318 | ||
319 | static int dsi_dual_connector_tile_init( | |
320 | struct drm_connector *connector, int id) | |
321 | { | |
322 | struct drm_display_mode *mode; | |
323 | /* Fake topology id */ | |
324 | char topo_id[8] = {'M', 'S', 'M', 'D', 'U', 'D', 'S', 'I'}; | |
325 | ||
326 | if (connector->tile_group) { | |
327 | DBG("Tile property has been initialized"); | |
328 | return 0; | |
329 | } | |
330 | ||
331 | /* Use the first mode only for now */ | |
332 | mode = list_first_entry(&connector->probed_modes, | |
333 | struct drm_display_mode, | |
334 | head); | |
335 | if (!mode) | |
336 | return -EINVAL; | |
337 | ||
338 | connector->tile_group = drm_mode_get_tile_group( | |
339 | connector->dev, topo_id); | |
340 | if (!connector->tile_group) | |
341 | connector->tile_group = drm_mode_create_tile_group( | |
342 | connector->dev, topo_id); | |
343 | if (!connector->tile_group) { | |
344 | pr_err("%s: failed to create tile group\n", __func__); | |
345 | return -ENOMEM; | |
346 | } | |
347 | ||
348 | connector->has_tile = true; | |
349 | connector->tile_is_single_monitor = true; | |
350 | ||
351 | /* mode has been fixed */ | |
352 | connector->tile_h_size = mode->hdisplay; | |
353 | connector->tile_v_size = mode->vdisplay; | |
354 | ||
355 | /* Only support left-right mode */ | |
356 | connector->num_h_tile = 2; | |
357 | connector->num_v_tile = 1; | |
358 | ||
359 | connector->tile_v_loc = 0; | |
360 | connector->tile_h_loc = (id == DSI_RIGHT) ? 1 : 0; | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
365 | static int dsi_mgr_connector_get_modes(struct drm_connector *connector) | |
366 | { | |
367 | int id = dsi_mgr_connector_get_id(connector); | |
368 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
369 | struct drm_panel *panel = msm_dsi->panel; | |
370 | int ret, num; | |
371 | ||
372 | if (!panel) | |
373 | return 0; | |
374 | ||
375 | /* Since we have 2 connectors, but only 1 drm_panel in dual DSI mode, | |
376 | * panel should not attach to any connector. | |
377 | * Only temporarily attach panel to the current connector here, | |
378 | * to let panel set mode to this connector. | |
379 | */ | |
380 | drm_panel_attach(panel, connector); | |
381 | num = drm_panel_get_modes(panel); | |
382 | drm_panel_detach(panel); | |
383 | if (!num) | |
384 | return 0; | |
385 | ||
678565c3 | 386 | if (IS_DUAL_DSI()) { |
a689554b HL |
387 | /* report half resolution to user */ |
388 | dsi_dual_connector_fix_modes(connector); | |
389 | ret = dsi_dual_connector_tile_init(connector, id); | |
390 | if (ret) | |
391 | return ret; | |
392 | ret = drm_mode_connector_set_tile_property(connector); | |
393 | if (ret) { | |
394 | pr_err("%s: set tile property failed, %d\n", | |
395 | __func__, ret); | |
396 | return ret; | |
397 | } | |
398 | } | |
399 | ||
400 | return num; | |
401 | } | |
402 | ||
403 | static int dsi_mgr_connector_mode_valid(struct drm_connector *connector, | |
404 | struct drm_display_mode *mode) | |
405 | { | |
406 | int id = dsi_mgr_connector_get_id(connector); | |
407 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
408 | struct drm_encoder *encoder = msm_dsi_get_encoder(msm_dsi); | |
409 | struct msm_drm_private *priv = connector->dev->dev_private; | |
410 | struct msm_kms *kms = priv->kms; | |
411 | long actual, requested; | |
412 | ||
413 | DBG(""); | |
414 | requested = 1000 * mode->clock; | |
415 | actual = kms->funcs->round_pixclk(kms, requested, encoder); | |
416 | ||
417 | DBG("requested=%ld, actual=%ld", requested, actual); | |
418 | if (actual != requested) | |
419 | return MODE_CLOCK_RANGE; | |
420 | ||
421 | return MODE_OK; | |
422 | } | |
423 | ||
424 | static struct drm_encoder * | |
425 | dsi_mgr_connector_best_encoder(struct drm_connector *connector) | |
426 | { | |
427 | int id = dsi_mgr_connector_get_id(connector); | |
428 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
429 | ||
430 | DBG(""); | |
431 | return msm_dsi_get_encoder(msm_dsi); | |
432 | } | |
433 | ||
434 | static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge) | |
435 | { | |
436 | int id = dsi_mgr_bridge_get_id(bridge); | |
437 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
438 | struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1); | |
439 | struct mipi_dsi_host *host = msm_dsi->host; | |
440 | struct drm_panel *panel = msm_dsi->panel; | |
b62aa70a | 441 | struct msm_dsi_phy_shared_timings phy_shared_timings[DSI_MAX]; |
678565c3 | 442 | bool is_dual_dsi = IS_DUAL_DSI(); |
a689554b HL |
443 | int ret; |
444 | ||
445 | DBG("id=%d", id); | |
b62aa70a | 446 | if (!msm_dsi_device_connected(msm_dsi)) |
a689554b HL |
447 | return; |
448 | ||
b62aa70a HL |
449 | ret = dsi_mgr_phy_enable(id, phy_shared_timings); |
450 | if (ret) | |
451 | goto phy_en_fail; | |
452 | ||
453 | /* Do nothing with the host if it is DSI 1 in case of dual DSI */ | |
454 | if (is_dual_dsi && (DSI_1 == id)) | |
455 | return; | |
456 | ||
457 | ret = msm_dsi_host_power_on(host, &phy_shared_timings[id]); | |
a689554b HL |
458 | if (ret) { |
459 | pr_err("%s: power on host %d failed, %d\n", __func__, id, ret); | |
460 | goto host_on_fail; | |
461 | } | |
462 | ||
678565c3 | 463 | if (is_dual_dsi && msm_dsi1) { |
b62aa70a HL |
464 | ret = msm_dsi_host_power_on(msm_dsi1->host, |
465 | &phy_shared_timings[DSI_1]); | |
a689554b HL |
466 | if (ret) { |
467 | pr_err("%s: power on host1 failed, %d\n", | |
468 | __func__, ret); | |
469 | goto host1_on_fail; | |
470 | } | |
471 | } | |
472 | ||
473 | /* Always call panel functions once, because even for dual panels, | |
474 | * there is only one drm_panel instance. | |
475 | */ | |
09992e4d AT |
476 | if (panel) { |
477 | ret = drm_panel_prepare(panel); | |
478 | if (ret) { | |
479 | pr_err("%s: prepare panel %d failed, %d\n", __func__, | |
480 | id, ret); | |
481 | goto panel_prep_fail; | |
482 | } | |
a689554b HL |
483 | } |
484 | ||
485 | ret = msm_dsi_host_enable(host); | |
486 | if (ret) { | |
487 | pr_err("%s: enable host %d failed, %d\n", __func__, id, ret); | |
488 | goto host_en_fail; | |
489 | } | |
490 | ||
678565c3 | 491 | if (is_dual_dsi && msm_dsi1) { |
a689554b HL |
492 | ret = msm_dsi_host_enable(msm_dsi1->host); |
493 | if (ret) { | |
494 | pr_err("%s: enable host1 failed, %d\n", __func__, ret); | |
495 | goto host1_en_fail; | |
496 | } | |
497 | } | |
498 | ||
09992e4d AT |
499 | if (panel) { |
500 | ret = drm_panel_enable(panel); | |
501 | if (ret) { | |
502 | pr_err("%s: enable panel %d failed, %d\n", __func__, id, | |
503 | ret); | |
504 | goto panel_en_fail; | |
505 | } | |
a689554b HL |
506 | } |
507 | ||
508 | return; | |
509 | ||
510 | panel_en_fail: | |
678565c3 | 511 | if (is_dual_dsi && msm_dsi1) |
a689554b HL |
512 | msm_dsi_host_disable(msm_dsi1->host); |
513 | host1_en_fail: | |
514 | msm_dsi_host_disable(host); | |
515 | host_en_fail: | |
09992e4d AT |
516 | if (panel) |
517 | drm_panel_unprepare(panel); | |
a689554b | 518 | panel_prep_fail: |
678565c3 | 519 | if (is_dual_dsi && msm_dsi1) |
a689554b HL |
520 | msm_dsi_host_power_off(msm_dsi1->host); |
521 | host1_on_fail: | |
522 | msm_dsi_host_power_off(host); | |
523 | host_on_fail: | |
b62aa70a HL |
524 | dsi_mgr_phy_disable(id); |
525 | phy_en_fail: | |
a689554b HL |
526 | return; |
527 | } | |
528 | ||
529 | static void dsi_mgr_bridge_enable(struct drm_bridge *bridge) | |
530 | { | |
531 | DBG(""); | |
532 | } | |
533 | ||
534 | static void dsi_mgr_bridge_disable(struct drm_bridge *bridge) | |
535 | { | |
536 | DBG(""); | |
537 | } | |
538 | ||
539 | static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge) | |
540 | { | |
541 | int id = dsi_mgr_bridge_get_id(bridge); | |
542 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
543 | struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1); | |
544 | struct mipi_dsi_host *host = msm_dsi->host; | |
545 | struct drm_panel *panel = msm_dsi->panel; | |
678565c3 | 546 | bool is_dual_dsi = IS_DUAL_DSI(); |
a689554b HL |
547 | int ret; |
548 | ||
549 | DBG("id=%d", id); | |
550 | ||
b62aa70a | 551 | if (!msm_dsi_device_connected(msm_dsi)) |
a689554b HL |
552 | return; |
553 | ||
b62aa70a HL |
554 | /* |
555 | * Do nothing with the host if it is DSI 1 in case of dual DSI. | |
556 | * It is safe to call dsi_mgr_phy_disable() here because a single PHY | |
557 | * won't be diabled until both PHYs request disable. | |
558 | */ | |
559 | if (is_dual_dsi && (DSI_1 == id)) | |
560 | goto disable_phy; | |
561 | ||
09992e4d AT |
562 | if (panel) { |
563 | ret = drm_panel_disable(panel); | |
564 | if (ret) | |
565 | pr_err("%s: Panel %d OFF failed, %d\n", __func__, id, | |
566 | ret); | |
567 | } | |
a689554b HL |
568 | |
569 | ret = msm_dsi_host_disable(host); | |
570 | if (ret) | |
571 | pr_err("%s: host %d disable failed, %d\n", __func__, id, ret); | |
572 | ||
678565c3 | 573 | if (is_dual_dsi && msm_dsi1) { |
a689554b HL |
574 | ret = msm_dsi_host_disable(msm_dsi1->host); |
575 | if (ret) | |
576 | pr_err("%s: host1 disable failed, %d\n", __func__, ret); | |
577 | } | |
578 | ||
09992e4d AT |
579 | if (panel) { |
580 | ret = drm_panel_unprepare(panel); | |
581 | if (ret) | |
582 | pr_err("%s: Panel %d unprepare failed,%d\n", __func__, | |
583 | id, ret); | |
584 | } | |
a689554b HL |
585 | |
586 | ret = msm_dsi_host_power_off(host); | |
587 | if (ret) | |
588 | pr_err("%s: host %d power off failed,%d\n", __func__, id, ret); | |
589 | ||
678565c3 | 590 | if (is_dual_dsi && msm_dsi1) { |
a689554b HL |
591 | ret = msm_dsi_host_power_off(msm_dsi1->host); |
592 | if (ret) | |
593 | pr_err("%s: host1 power off failed, %d\n", | |
594 | __func__, ret); | |
595 | } | |
b62aa70a HL |
596 | |
597 | disable_phy: | |
598 | dsi_mgr_phy_disable(id); | |
a689554b HL |
599 | } |
600 | ||
601 | static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge, | |
602 | struct drm_display_mode *mode, | |
603 | struct drm_display_mode *adjusted_mode) | |
604 | { | |
605 | int id = dsi_mgr_bridge_get_id(bridge); | |
606 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
607 | struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id); | |
608 | struct mipi_dsi_host *host = msm_dsi->host; | |
678565c3 | 609 | bool is_dual_dsi = IS_DUAL_DSI(); |
a689554b HL |
610 | |
611 | DBG("set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", | |
612 | mode->base.id, mode->name, | |
613 | mode->vrefresh, mode->clock, | |
614 | mode->hdisplay, mode->hsync_start, | |
615 | mode->hsync_end, mode->htotal, | |
616 | mode->vdisplay, mode->vsync_start, | |
617 | mode->vsync_end, mode->vtotal, | |
618 | mode->type, mode->flags); | |
619 | ||
678565c3 | 620 | if (is_dual_dsi && (DSI_1 == id)) |
a689554b HL |
621 | return; |
622 | ||
623 | msm_dsi_host_set_display_mode(host, adjusted_mode); | |
678565c3 | 624 | if (is_dual_dsi && other_dsi) |
a689554b HL |
625 | msm_dsi_host_set_display_mode(other_dsi->host, adjusted_mode); |
626 | } | |
627 | ||
628 | static const struct drm_connector_funcs dsi_mgr_connector_funcs = { | |
629 | .dpms = drm_atomic_helper_connector_dpms, | |
630 | .detect = dsi_mgr_connector_detect, | |
631 | .fill_modes = drm_helper_probe_single_connector_modes, | |
632 | .destroy = dsi_mgr_connector_destroy, | |
633 | .reset = drm_atomic_helper_connector_reset, | |
634 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, | |
635 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, | |
636 | }; | |
637 | ||
638 | static const struct drm_connector_helper_funcs dsi_mgr_conn_helper_funcs = { | |
639 | .get_modes = dsi_mgr_connector_get_modes, | |
640 | .mode_valid = dsi_mgr_connector_mode_valid, | |
641 | .best_encoder = dsi_mgr_connector_best_encoder, | |
642 | }; | |
643 | ||
644 | static const struct drm_bridge_funcs dsi_mgr_bridge_funcs = { | |
645 | .pre_enable = dsi_mgr_bridge_pre_enable, | |
646 | .enable = dsi_mgr_bridge_enable, | |
647 | .disable = dsi_mgr_bridge_disable, | |
648 | .post_disable = dsi_mgr_bridge_post_disable, | |
649 | .mode_set = dsi_mgr_bridge_mode_set, | |
650 | }; | |
651 | ||
c118e290 | 652 | /* initialize connector when we're connected to a drm_panel */ |
a689554b HL |
653 | struct drm_connector *msm_dsi_manager_connector_init(u8 id) |
654 | { | |
655 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
656 | struct drm_connector *connector = NULL; | |
657 | struct dsi_connector *dsi_connector; | |
97e00119 | 658 | int ret; |
a689554b | 659 | |
8208ed93 AT |
660 | dsi_connector = kzalloc(sizeof(*dsi_connector), GFP_KERNEL); |
661 | if (!dsi_connector) | |
662 | return ERR_PTR(-ENOMEM); | |
a689554b HL |
663 | |
664 | dsi_connector->id = id; | |
665 | ||
666 | connector = &dsi_connector->base; | |
667 | ||
668 | ret = drm_connector_init(msm_dsi->dev, connector, | |
669 | &dsi_mgr_connector_funcs, DRM_MODE_CONNECTOR_DSI); | |
670 | if (ret) | |
8208ed93 | 671 | return ERR_PTR(ret); |
a689554b HL |
672 | |
673 | drm_connector_helper_add(connector, &dsi_mgr_conn_helper_funcs); | |
674 | ||
675 | /* Enable HPD to let hpd event is handled | |
676 | * when panel is attached to the host. | |
677 | */ | |
678 | connector->polled = DRM_CONNECTOR_POLL_HPD; | |
679 | ||
680 | /* Display driver doesn't support interlace now. */ | |
681 | connector->interlace_allowed = 0; | |
682 | connector->doublescan_allowed = 0; | |
683 | ||
97e00119 | 684 | drm_mode_connector_attach_encoder(connector, msm_dsi->encoder); |
6f6b2879 | 685 | |
a689554b | 686 | return connector; |
a689554b HL |
687 | } |
688 | ||
689 | /* initialize bridge */ | |
690 | struct drm_bridge *msm_dsi_manager_bridge_init(u8 id) | |
691 | { | |
692 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
693 | struct drm_bridge *bridge = NULL; | |
694 | struct dsi_bridge *dsi_bridge; | |
3bb80f24 | 695 | struct drm_encoder *encoder; |
a689554b HL |
696 | int ret; |
697 | ||
698 | dsi_bridge = devm_kzalloc(msm_dsi->dev->dev, | |
699 | sizeof(*dsi_bridge), GFP_KERNEL); | |
700 | if (!dsi_bridge) { | |
701 | ret = -ENOMEM; | |
702 | goto fail; | |
703 | } | |
704 | ||
705 | dsi_bridge->id = id; | |
706 | ||
97e00119 | 707 | encoder = msm_dsi->encoder; |
3bb80f24 | 708 | |
a689554b HL |
709 | bridge = &dsi_bridge->base; |
710 | bridge->funcs = &dsi_mgr_bridge_funcs; | |
711 | ||
3bb80f24 | 712 | ret = drm_bridge_attach(encoder, bridge, NULL); |
a689554b HL |
713 | if (ret) |
714 | goto fail; | |
715 | ||
716 | return bridge; | |
717 | ||
718 | fail: | |
719 | if (bridge) | |
720 | msm_dsi_manager_bridge_destroy(bridge); | |
721 | ||
722 | return ERR_PTR(ret); | |
723 | } | |
724 | ||
c118e290 AT |
725 | struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id) |
726 | { | |
727 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
728 | struct drm_device *dev = msm_dsi->dev; | |
729 | struct drm_encoder *encoder; | |
730 | struct drm_bridge *int_bridge, *ext_bridge; | |
731 | struct drm_connector *connector; | |
732 | struct list_head *connector_list; | |
733 | ||
734 | int_bridge = msm_dsi->bridge; | |
735 | ext_bridge = msm_dsi->external_bridge = | |
736 | msm_dsi_host_get_bridge(msm_dsi->host); | |
737 | ||
97e00119 | 738 | encoder = msm_dsi->encoder; |
c118e290 AT |
739 | |
740 | /* link the internal dsi bridge to the external bridge */ | |
3bb80f24 | 741 | drm_bridge_attach(encoder, ext_bridge, int_bridge); |
c118e290 AT |
742 | |
743 | /* | |
744 | * we need the drm_connector created by the external bridge | |
745 | * driver (or someone else) to feed it to our driver's | |
746 | * priv->connector[] list, mainly for msm_fbdev_init() | |
747 | */ | |
748 | connector_list = &dev->mode_config.connector_list; | |
749 | ||
750 | list_for_each_entry(connector, connector_list, head) { | |
751 | int i; | |
752 | ||
753 | for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) { | |
754 | if (connector->encoder_ids[i] == encoder->base.id) | |
755 | return connector; | |
756 | } | |
757 | } | |
758 | ||
759 | return ERR_PTR(-ENODEV); | |
760 | } | |
761 | ||
a689554b HL |
762 | void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge) |
763 | { | |
764 | } | |
765 | ||
a689554b HL |
766 | int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg) |
767 | { | |
768 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
769 | struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0); | |
770 | struct mipi_dsi_host *host = msm_dsi->host; | |
771 | bool is_read = (msg->rx_buf && msg->rx_len); | |
772 | bool need_sync = (IS_SYNC_NEEDED() && !is_read); | |
773 | int ret; | |
774 | ||
775 | if (!msg->tx_buf || !msg->tx_len) | |
776 | return 0; | |
777 | ||
778 | /* In dual master case, panel requires the same commands sent to | |
779 | * both DSI links. Host issues the command trigger to both links | |
780 | * when DSI_1 calls the cmd transfer function, no matter it happens | |
781 | * before or after DSI_0 cmd transfer. | |
782 | */ | |
783 | if (need_sync && (id == DSI_0)) | |
784 | return is_read ? msg->rx_len : msg->tx_len; | |
785 | ||
786 | if (need_sync && msm_dsi0) { | |
787 | ret = msm_dsi_host_xfer_prepare(msm_dsi0->host, msg); | |
788 | if (ret) { | |
789 | pr_err("%s: failed to prepare non-trigger host, %d\n", | |
790 | __func__, ret); | |
791 | return ret; | |
792 | } | |
793 | } | |
794 | ret = msm_dsi_host_xfer_prepare(host, msg); | |
795 | if (ret) { | |
796 | pr_err("%s: failed to prepare host, %d\n", __func__, ret); | |
797 | goto restore_host0; | |
798 | } | |
799 | ||
800 | ret = is_read ? msm_dsi_host_cmd_rx(host, msg) : | |
801 | msm_dsi_host_cmd_tx(host, msg); | |
802 | ||
803 | msm_dsi_host_xfer_restore(host, msg); | |
804 | ||
805 | restore_host0: | |
806 | if (need_sync && msm_dsi0) | |
807 | msm_dsi_host_xfer_restore(msm_dsi0->host, msg); | |
808 | ||
809 | return ret; | |
810 | } | |
811 | ||
4ff9d4cb | 812 | bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len) |
a689554b HL |
813 | { |
814 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
815 | struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0); | |
816 | struct mipi_dsi_host *host = msm_dsi->host; | |
817 | ||
818 | if (IS_SYNC_NEEDED() && (id == DSI_0)) | |
819 | return false; | |
820 | ||
821 | if (IS_SYNC_NEEDED() && msm_dsi0) | |
4ff9d4cb | 822 | msm_dsi_host_cmd_xfer_commit(msm_dsi0->host, dma_base, len); |
a689554b | 823 | |
4ff9d4cb | 824 | msm_dsi_host_cmd_xfer_commit(host, dma_base, len); |
a689554b HL |
825 | |
826 | return true; | |
827 | } | |
828 | ||
9c9f6f8d AT |
829 | void msm_dsi_manager_attach_dsi_device(int id, u32 device_flags) |
830 | { | |
831 | struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); | |
832 | struct drm_device *dev = msm_dsi->dev; | |
833 | struct msm_drm_private *priv; | |
834 | struct msm_kms *kms; | |
835 | struct drm_encoder *encoder; | |
836 | ||
837 | /* | |
838 | * drm_device pointer is assigned to msm_dsi only in the modeset_init | |
839 | * path. If mipi_dsi_attach() happens in DSI driver's probe path | |
840 | * (generally the case when we're connected to a drm_panel of the type | |
841 | * mipi_dsi_device), this would be NULL. In such cases, try to set the | |
842 | * encoder mode in the DSI connector's detect() op. | |
843 | */ | |
844 | if (!dev) | |
845 | return; | |
846 | ||
847 | priv = dev->dev_private; | |
848 | kms = priv->kms; | |
849 | encoder = msm_dsi_get_encoder(msm_dsi); | |
850 | ||
851 | if (encoder && kms->funcs->set_encoder_mode) | |
852 | if (!(device_flags & MIPI_DSI_MODE_VIDEO)) | |
853 | kms->funcs->set_encoder_mode(kms, encoder, true); | |
854 | } | |
855 | ||
a689554b HL |
856 | int msm_dsi_manager_register(struct msm_dsi *msm_dsi) |
857 | { | |
858 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; | |
859 | int id = msm_dsi->id; | |
a689554b HL |
860 | int ret; |
861 | ||
862 | if (id > DSI_MAX) { | |
863 | pr_err("%s: invalid id %d\n", __func__, id); | |
864 | return -EINVAL; | |
865 | } | |
866 | ||
867 | if (msm_dsim->dsi[id]) { | |
868 | pr_err("%s: dsi%d already registered\n", __func__, id); | |
869 | return -EBUSY; | |
870 | } | |
871 | ||
872 | msm_dsim->dsi[id] = msm_dsi; | |
873 | ||
678565c3 | 874 | ret = dsi_mgr_parse_dual_dsi(msm_dsi->pdev->dev.of_node, id); |
a689554b | 875 | if (ret) { |
678565c3 | 876 | pr_err("%s: failed to parse dual DSI info\n", __func__); |
9d32c498 | 877 | goto fail; |
a689554b HL |
878 | } |
879 | ||
57bf4338 | 880 | ret = dsi_mgr_setup_components(id); |
9d32c498 HL |
881 | if (ret) { |
882 | pr_err("%s: failed to register mipi dsi host for DSI %d\n", | |
883 | __func__, id); | |
884 | goto fail; | |
a689554b HL |
885 | } |
886 | ||
9d32c498 HL |
887 | return 0; |
888 | ||
889 | fail: | |
890 | msm_dsim->dsi[id] = NULL; | |
a689554b HL |
891 | return ret; |
892 | } | |
893 | ||
894 | void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi) | |
895 | { | |
896 | struct msm_dsi_manager *msm_dsim = &msm_dsim_glb; | |
897 | ||
898 | if (msm_dsi->host) | |
899 | msm_dsi_host_unregister(msm_dsi->host); | |
900 | msm_dsim->dsi[msm_dsi->id] = NULL; | |
901 | } | |
902 |