1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
4 */
5
6#include "drm/drm_bridge_connector.h"
7
8#include "msm_kms.h"
9#include "dsi.h"
10
11#define DSI_CLOCK_MASTER DSI_0
12#define DSI_CLOCK_SLAVE DSI_1
13
14#define DSI_LEFT DSI_0
15#define DSI_RIGHT DSI_1
16
17/* According to the current drm framework sequence, take the encoder of
18 * DSI_1 as master encoder
19 */
20#define DSI_ENCODER_MASTER DSI_1
21#define DSI_ENCODER_SLAVE DSI_0
22
23struct msm_dsi_manager {
24 struct msm_dsi *dsi[DSI_MAX];
25
26 bool is_bonded_dsi;
27 bool is_sync_needed;
28 int master_dsi_link_id;
29};
30
31static struct msm_dsi_manager msm_dsim_glb;
32
33#define IS_BONDED_DSI() (msm_dsim_glb.is_bonded_dsi)
34#define IS_SYNC_NEEDED() (msm_dsim_glb.is_sync_needed)
35#define IS_MASTER_DSI_LINK(id) (msm_dsim_glb.master_dsi_link_id == id)
36
37static inline struct msm_dsi *dsi_mgr_get_dsi(int id)
38{
39 return msm_dsim_glb.dsi[id];
40}
41
42static inline struct msm_dsi *dsi_mgr_get_other_dsi(int id)
43{
44 return msm_dsim_glb.dsi[(id + 1) % DSI_MAX];
45}
46
47static int dsi_mgr_parse_of(struct device_node *np, int id)
48{
49 struct msm_dsi_manager *msm_dsim = &msm_dsim_glb;
50
51 /* We assume 2 dsi nodes have the same information of bonded dsi and
52 * sync-mode, and only one node specifies master in case of bonded mode.
53 */
54 if (!msm_dsim->is_bonded_dsi)
55 msm_dsim->is_bonded_dsi = of_property_read_bool(np, "qcom,dual-dsi-mode");
56
57 if (msm_dsim->is_bonded_dsi) {
58 if (of_property_read_bool(np, "qcom,master-dsi"))
59 msm_dsim->master_dsi_link_id = id;
60 if (!msm_dsim->is_sync_needed)
61 msm_dsim->is_sync_needed = of_property_read_bool(
62 np, "qcom,sync-dual-dsi");
63 }
64
65 return 0;
66}
67
68static int dsi_mgr_setup_components(int id)
69{
70 struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
71 struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id);
72 struct msm_dsi *clk_master_dsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER);
73 struct msm_dsi *clk_slave_dsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);
74 int ret;
75
76 if (!IS_BONDED_DSI()) {
77 ret = msm_dsi_host_register(host: msm_dsi->host);
78 if (ret)
79 return ret;
80
81 msm_dsi_phy_set_usecase(phy: msm_dsi->phy, uc: MSM_DSI_PHY_STANDALONE);
82 msm_dsi_host_set_phy_mode(host: msm_dsi->host, src_phy: msm_dsi->phy);
83 } else if (other_dsi) {
84 struct msm_dsi *master_link_dsi = IS_MASTER_DSI_LINK(id) ?
85 msm_dsi : other_dsi;
86 struct msm_dsi *slave_link_dsi = IS_MASTER_DSI_LINK(id) ?
87 other_dsi : msm_dsi;
88 /* Register slave host first, so that slave DSI device
89 * has a chance to probe, and do not block the master
90 * DSI device's probe.
91 * Also, do not check defer for the slave host,
92 * because only master DSI device adds the panel to global
93 * panel list. The panel's device is the master DSI device.
94 */
95 ret = msm_dsi_host_register(host: slave_link_dsi->host);
96 if (ret)
97 return ret;
98 ret = msm_dsi_host_register(host: master_link_dsi->host);
99 if (ret)
100 return ret;
101
102 /* PLL0 is to drive both 2 DSI link clocks in bonded DSI mode. */
103 msm_dsi_phy_set_usecase(phy: clk_master_dsi->phy,
104 uc: MSM_DSI_PHY_MASTER);
105 msm_dsi_phy_set_usecase(phy: clk_slave_dsi->phy,
106 uc: MSM_DSI_PHY_SLAVE);
107 msm_dsi_host_set_phy_mode(host: msm_dsi->host, src_phy: msm_dsi->phy);
108 msm_dsi_host_set_phy_mode(host: other_dsi->host, src_phy: other_dsi->phy);
109 }
110
111 return 0;
112}
113
114static int enable_phy(struct msm_dsi *msm_dsi,
115 struct msm_dsi_phy_shared_timings *shared_timings)
116{
117 struct msm_dsi_phy_clk_request clk_req;
118 bool is_bonded_dsi = IS_BONDED_DSI();
119
120 msm_dsi_host_get_phy_clk_req(host: msm_dsi->host, clk_req: &clk_req, is_bonded_dsi);
121
122 return msm_dsi_phy_enable(phy: msm_dsi->phy, clk_req: &clk_req, shared_timings);
123}
124
125static int
126dsi_mgr_phy_enable(int id,
127 struct msm_dsi_phy_shared_timings shared_timings[DSI_MAX])
128{
129 struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
130 struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER);
131 struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);
132 int ret;
133
134 /* In case of bonded DSI, some registers in PHY1 have been programmed
135 * during PLL0 clock's set_rate. The PHY1 reset called by host1 here
136 * will silently reset those PHY1 registers. Therefore we need to reset
137 * and enable both PHYs before any PLL clock operation.
138 */
139 if (IS_BONDED_DSI() && mdsi && sdsi) {
140 if (!mdsi->phy_enabled && !sdsi->phy_enabled) {
141 msm_dsi_host_reset_phy(host: mdsi->host);
142 msm_dsi_host_reset_phy(host: sdsi->host);
143
144 ret = enable_phy(msm_dsi: mdsi,
145 shared_timings: &shared_timings[DSI_CLOCK_MASTER]);
146 if (ret)
147 return ret;
148 ret = enable_phy(msm_dsi: sdsi,
149 shared_timings: &shared_timings[DSI_CLOCK_SLAVE]);
150 if (ret) {
151 msm_dsi_phy_disable(phy: mdsi->phy);
152 return ret;
153 }
154 }
155 } else {
156 msm_dsi_host_reset_phy(host: msm_dsi->host);
157 ret = enable_phy(msm_dsi, shared_timings: &shared_timings[id]);
158 if (ret)
159 return ret;
160 }
161
162 msm_dsi->phy_enabled = true;
163
164 return 0;
165}
166
167static void dsi_mgr_phy_disable(int id)
168{
169 struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
170 struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER);
171 struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);
172
173 /* disable DSI phy
174 * In bonded dsi configuration, the phy should be disabled for the
175 * first controller only when the second controller is disabled.
176 */
177 msm_dsi->phy_enabled = false;
178 if (IS_BONDED_DSI() && mdsi && sdsi) {
179 if (!mdsi->phy_enabled && !sdsi->phy_enabled) {
180 msm_dsi_phy_disable(phy: sdsi->phy);
181 msm_dsi_phy_disable(phy: mdsi->phy);
182 }
183 } else {
184 msm_dsi_phy_disable(phy: msm_dsi->phy);
185 }
186}
187
188struct dsi_bridge {
189 struct drm_bridge base;
190 int id;
191};
192
193#define to_dsi_bridge(x) container_of(x, struct dsi_bridge, base)
194
195static int dsi_mgr_bridge_get_id(struct drm_bridge *bridge)
196{
197 struct dsi_bridge *dsi_bridge = to_dsi_bridge(bridge);
198 return dsi_bridge->id;
199}
200
201static int dsi_mgr_bridge_power_on(struct drm_bridge *bridge)
202{
203 int id = dsi_mgr_bridge_get_id(bridge);
204 struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
205 struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
206 struct mipi_dsi_host *host = msm_dsi->host;
207 struct msm_dsi_phy_shared_timings phy_shared_timings[DSI_MAX];
208 bool is_bonded_dsi = IS_BONDED_DSI();
209 int ret;
210
211 DBG("id=%d", id);
212
213 ret = dsi_mgr_phy_enable(id, shared_timings: phy_shared_timings);
214 if (ret)
215 goto phy_en_fail;
216
217 ret = msm_dsi_host_power_on(host, phy_shared_timings: &phy_shared_timings[id], is_bonded_dsi, phy: msm_dsi->phy);
218 if (ret) {
219 pr_err("%s: power on host %d failed, %d\n", __func__, id, ret);
220 goto host_on_fail;
221 }
222
223 if (is_bonded_dsi && msm_dsi1) {
224 ret = msm_dsi_host_power_on(host: msm_dsi1->host,
225 phy_shared_timings: &phy_shared_timings[DSI_1], is_bonded_dsi, phy: msm_dsi1->phy);
226 if (ret) {
227 pr_err("%s: power on host1 failed, %d\n",
228 __func__, ret);
229 goto host1_on_fail;
230 }
231 }
232
233 /*
234 * Enable before preparing the panel, disable after unpreparing, so
235 * that the panel can communicate over the DSI link.
236 */
237 msm_dsi_host_enable_irq(host);
238 if (is_bonded_dsi && msm_dsi1)
239 msm_dsi_host_enable_irq(host: msm_dsi1->host);
240
241 return 0;
242
243host1_on_fail:
244 msm_dsi_host_power_off(host);
245host_on_fail:
246 dsi_mgr_phy_disable(id);
247phy_en_fail:
248 return ret;
249}
250
251static void dsi_mgr_bridge_power_off(struct drm_bridge *bridge)
252{
253 int id = dsi_mgr_bridge_get_id(bridge);
254 struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
255 struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
256 struct mipi_dsi_host *host = msm_dsi->host;
257 bool is_bonded_dsi = IS_BONDED_DSI();
258
259 msm_dsi_host_disable_irq(host);
260 if (is_bonded_dsi && msm_dsi1) {
261 msm_dsi_host_disable_irq(host: msm_dsi1->host);
262 msm_dsi_host_power_off(host: msm_dsi1->host);
263 }
264 msm_dsi_host_power_off(host);
265 dsi_mgr_phy_disable(id);
266}
267
268static void dsi_mgr_bridge_pre_enable(struct drm_bridge *bridge)
269{
270 int id = dsi_mgr_bridge_get_id(bridge);
271 struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
272 struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
273 struct mipi_dsi_host *host = msm_dsi->host;
274 bool is_bonded_dsi = IS_BONDED_DSI();
275 int ret;
276
277 DBG("id=%d", id);
278
279 /* Do nothing with the host if it is slave-DSI in case of bonded DSI */
280 if (is_bonded_dsi && !IS_MASTER_DSI_LINK(id))
281 return;
282
283 ret = dsi_mgr_bridge_power_on(bridge);
284 if (ret) {
285 dev_err(&msm_dsi->pdev->dev, "Power on failed: %d\n", ret);
286 return;
287 }
288
289 ret = msm_dsi_host_enable(host);
290 if (ret) {
291 pr_err("%s: enable host %d failed, %d\n", __func__, id, ret);
292 goto host_en_fail;
293 }
294
295 if (is_bonded_dsi && msm_dsi1) {
296 ret = msm_dsi_host_enable(host: msm_dsi1->host);
297 if (ret) {
298 pr_err("%s: enable host1 failed, %d\n", __func__, ret);
299 goto host1_en_fail;
300 }
301 }
302
303 return;
304
305host1_en_fail:
306 msm_dsi_host_disable(host);
307host_en_fail:
308 dsi_mgr_bridge_power_off(bridge);
309}
310
311void msm_dsi_manager_tpg_enable(void)
312{
313 struct msm_dsi *m_dsi = dsi_mgr_get_dsi(DSI_0);
314 struct msm_dsi *s_dsi = dsi_mgr_get_dsi(DSI_1);
315
316 /* if dual dsi, trigger tpg on master first then slave */
317 if (m_dsi) {
318 msm_dsi_host_test_pattern_en(host: m_dsi->host);
319 if (IS_BONDED_DSI() && s_dsi)
320 msm_dsi_host_test_pattern_en(host: s_dsi->host);
321 }
322}
323
324static void dsi_mgr_bridge_post_disable(struct drm_bridge *bridge)
325{
326 int id = dsi_mgr_bridge_get_id(bridge);
327 struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
328 struct msm_dsi *msm_dsi1 = dsi_mgr_get_dsi(DSI_1);
329 struct mipi_dsi_host *host = msm_dsi->host;
330 bool is_bonded_dsi = IS_BONDED_DSI();
331 int ret;
332
333 DBG("id=%d", id);
334
335 /*
336 * Do nothing with the host if it is slave-DSI in case of bonded DSI.
337 * It is safe to call dsi_mgr_phy_disable() here because a single PHY
338 * won't be diabled until both PHYs request disable.
339 */
340 if (is_bonded_dsi && !IS_MASTER_DSI_LINK(id))
341 goto disable_phy;
342
343 ret = msm_dsi_host_disable(host);
344 if (ret)
345 pr_err("%s: host %d disable failed, %d\n", __func__, id, ret);
346
347 if (is_bonded_dsi && msm_dsi1) {
348 ret = msm_dsi_host_disable(host: msm_dsi1->host);
349 if (ret)
350 pr_err("%s: host1 disable failed, %d\n", __func__, ret);
351 }
352
353 msm_dsi_host_disable_irq(host);
354 if (is_bonded_dsi && msm_dsi1)
355 msm_dsi_host_disable_irq(host: msm_dsi1->host);
356
357 /* Save PHY status if it is a clock source */
358 msm_dsi_phy_pll_save_state(phy: msm_dsi->phy);
359
360 ret = msm_dsi_host_power_off(host);
361 if (ret)
362 pr_err("%s: host %d power off failed,%d\n", __func__, id, ret);
363
364 if (is_bonded_dsi && msm_dsi1) {
365 ret = msm_dsi_host_power_off(host: msm_dsi1->host);
366 if (ret)
367 pr_err("%s: host1 power off failed, %d\n",
368 __func__, ret);
369 }
370
371disable_phy:
372 dsi_mgr_phy_disable(id);
373}
374
375static void dsi_mgr_bridge_mode_set(struct drm_bridge *bridge,
376 const struct drm_display_mode *mode,
377 const struct drm_display_mode *adjusted_mode)
378{
379 int id = dsi_mgr_bridge_get_id(bridge);
380 struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
381 struct msm_dsi *other_dsi = dsi_mgr_get_other_dsi(id);
382 struct mipi_dsi_host *host = msm_dsi->host;
383 bool is_bonded_dsi = IS_BONDED_DSI();
384
385 DBG("set mode: " DRM_MODE_FMT, DRM_MODE_ARG(mode));
386
387 if (is_bonded_dsi && !IS_MASTER_DSI_LINK(id))
388 return;
389
390 msm_dsi_host_set_display_mode(host, mode: adjusted_mode);
391 if (is_bonded_dsi && other_dsi)
392 msm_dsi_host_set_display_mode(host: other_dsi->host, mode: adjusted_mode);
393}
394
395static enum drm_mode_status dsi_mgr_bridge_mode_valid(struct drm_bridge *bridge,
396 const struct drm_display_info *info,
397 const struct drm_display_mode *mode)
398{
399 int id = dsi_mgr_bridge_get_id(bridge);
400 struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
401 struct mipi_dsi_host *host = msm_dsi->host;
402 struct platform_device *pdev = msm_dsi->pdev;
403 struct dev_pm_opp *opp;
404 unsigned long byte_clk_rate;
405
406 byte_clk_rate = dsi_byte_clk_get_rate(host, IS_BONDED_DSI(), mode);
407
408 opp = dev_pm_opp_find_freq_ceil(&pdev->dev, &byte_clk_rate);
409 if (!IS_ERR(ptr: opp)) {
410 dev_pm_opp_put(opp);
411 } else if (PTR_ERR(ptr: opp) == -ERANGE) {
412 /*
413 * An empty table is created by devm_pm_opp_set_clkname() even
414 * if there is none. Thus find_freq_ceil will still return
415 * -ERANGE in such case.
416 */
417 if (dev_pm_opp_get_opp_count(&pdev->dev) != 0)
418 return MODE_CLOCK_RANGE;
419 } else {
420 return MODE_ERROR;
421 }
422
423 return msm_dsi_host_check_dsc(host, mode);
424}
425
426static const struct drm_bridge_funcs dsi_mgr_bridge_funcs = {
427 .pre_enable = dsi_mgr_bridge_pre_enable,
428 .post_disable = dsi_mgr_bridge_post_disable,
429 .mode_set = dsi_mgr_bridge_mode_set,
430 .mode_valid = dsi_mgr_bridge_mode_valid,
431};
432
433/* initialize bridge */
434struct drm_bridge *msm_dsi_manager_bridge_init(struct msm_dsi *msm_dsi,
435 struct drm_encoder *encoder)
436{
437 struct drm_bridge *bridge;
438 struct dsi_bridge *dsi_bridge;
439 int ret;
440
441 dsi_bridge = devm_kzalloc(dev: msm_dsi->dev->dev,
442 size: sizeof(*dsi_bridge), GFP_KERNEL);
443 if (!dsi_bridge)
444 return ERR_PTR(error: -ENOMEM);
445
446 dsi_bridge->id = msm_dsi->id;
447
448 bridge = &dsi_bridge->base;
449 bridge->funcs = &dsi_mgr_bridge_funcs;
450
451 ret = devm_drm_bridge_add(dev: msm_dsi->dev->dev, bridge);
452 if (ret)
453 return ERR_PTR(error: ret);
454
455 ret = drm_bridge_attach(encoder, bridge, NULL, flags: 0);
456 if (ret)
457 return ERR_PTR(error: ret);
458
459 return bridge;
460}
461
462int msm_dsi_manager_ext_bridge_init(u8 id, struct drm_bridge *int_bridge)
463{
464 struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
465 struct drm_device *dev = msm_dsi->dev;
466 struct drm_encoder *encoder;
467 struct drm_bridge *ext_bridge;
468 int ret;
469
470 ext_bridge = devm_drm_of_get_bridge(dev: &msm_dsi->pdev->dev,
471 node: msm_dsi->pdev->dev.of_node, port: 1, endpoint: 0);
472 if (IS_ERR(ptr: ext_bridge))
473 return PTR_ERR(ptr: ext_bridge);
474
475 encoder = int_bridge->encoder;
476
477 /*
478 * Try first to create the bridge without it creating its own
479 * connector.. currently some bridges support this, and others
480 * do not (and some support both modes)
481 */
482 ret = drm_bridge_attach(encoder, bridge: ext_bridge, previous: int_bridge,
483 flags: DRM_BRIDGE_ATTACH_NO_CONNECTOR);
484 if (ret == -EINVAL) {
485 /*
486 * link the internal dsi bridge to the external bridge,
487 * connector is created by the next bridge.
488 */
489 ret = drm_bridge_attach(encoder, bridge: ext_bridge, previous: int_bridge, flags: 0);
490 if (ret < 0)
491 return ret;
492 } else {
493 struct drm_connector *connector;
494
495 /* We are in charge of the connector, create one now. */
496 connector = drm_bridge_connector_init(drm: dev, encoder);
497 if (IS_ERR(ptr: connector)) {
498 DRM_ERROR("Unable to create bridge connector\n");
499 return PTR_ERR(ptr: connector);
500 }
501
502 ret = drm_connector_attach_encoder(connector, encoder);
503 if (ret < 0)
504 return ret;
505 }
506
507 return 0;
508}
509
510int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg)
511{
512 struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
513 struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0);
514 struct mipi_dsi_host *host = msm_dsi->host;
515 bool is_read = (msg->rx_buf && msg->rx_len);
516 bool need_sync = (IS_SYNC_NEEDED() && !is_read);
517 int ret;
518
519 if (!msg->tx_buf || !msg->tx_len)
520 return 0;
521
522 /* In bonded master case, panel requires the same commands sent to
523 * both DSI links. Host issues the command trigger to both links
524 * when DSI_1 calls the cmd transfer function, no matter it happens
525 * before or after DSI_0 cmd transfer.
526 */
527 if (need_sync && (id == DSI_0))
528 return is_read ? msg->rx_len : msg->tx_len;
529
530 if (need_sync && msm_dsi0) {
531 ret = msm_dsi_host_xfer_prepare(host: msm_dsi0->host, msg);
532 if (ret) {
533 pr_err("%s: failed to prepare non-trigger host, %d\n",
534 __func__, ret);
535 return ret;
536 }
537 }
538 ret = msm_dsi_host_xfer_prepare(host, msg);
539 if (ret) {
540 pr_err("%s: failed to prepare host, %d\n", __func__, ret);
541 goto restore_host0;
542 }
543
544 ret = is_read ? msm_dsi_host_cmd_rx(host, msg) :
545 msm_dsi_host_cmd_tx(host, msg);
546
547 msm_dsi_host_xfer_restore(host, msg);
548
549restore_host0:
550 if (need_sync && msm_dsi0)
551 msm_dsi_host_xfer_restore(host: msm_dsi0->host, msg);
552
553 return ret;
554}
555
556bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len)
557{
558 struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id);
559 struct msm_dsi *msm_dsi0 = dsi_mgr_get_dsi(DSI_0);
560 struct mipi_dsi_host *host = msm_dsi->host;
561
562 if (IS_SYNC_NEEDED() && (id == DSI_0))
563 return false;
564
565 if (IS_SYNC_NEEDED() && msm_dsi0)
566 msm_dsi_host_cmd_xfer_commit(host: msm_dsi0->host, dma_base, len);
567
568 msm_dsi_host_cmd_xfer_commit(host, dma_base, len);
569
570 return true;
571}
572
573int msm_dsi_manager_register(struct msm_dsi *msm_dsi)
574{
575 struct msm_dsi_manager *msm_dsim = &msm_dsim_glb;
576 int id = msm_dsi->id;
577 int ret;
578
579 if (id >= DSI_MAX) {
580 pr_err("%s: invalid id %d\n", __func__, id);
581 return -EINVAL;
582 }
583
584 if (msm_dsim->dsi[id]) {
585 pr_err("%s: dsi%d already registered\n", __func__, id);
586 return -EBUSY;
587 }
588
589 msm_dsim->dsi[id] = msm_dsi;
590
591 ret = dsi_mgr_parse_of(np: msm_dsi->pdev->dev.of_node, id);
592 if (ret) {
593 pr_err("%s: failed to parse OF DSI info\n", __func__);
594 goto fail;
595 }
596
597 ret = dsi_mgr_setup_components(id);
598 if (ret) {
599 pr_err("%s: failed to register mipi dsi host for DSI %d: %d\n",
600 __func__, id, ret);
601 goto fail;
602 }
603
604 return 0;
605
606fail:
607 msm_dsim->dsi[id] = NULL;
608 return ret;
609}
610
611void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi)
612{
613 struct msm_dsi_manager *msm_dsim = &msm_dsim_glb;
614
615 if (msm_dsi->host)
616 msm_dsi_host_unregister(host: msm_dsi->host);
617
618 if (msm_dsi->id >= 0)
619 msm_dsim->dsi[msm_dsi->id] = NULL;
620}
621
622bool msm_dsi_is_bonded_dsi(struct msm_dsi *msm_dsi)
623{
624 return IS_BONDED_DSI();
625}
626
627bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi)
628{
629 return IS_MASTER_DSI_LINK(msm_dsi->id);
630}
631

source code of linux/drivers/gpu/drm/msm/dsi/dsi_manager.c