2 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
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.
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.
17 #define DSI_CLOCK_MASTER DSI_0
18 #define DSI_CLOCK_SLAVE DSI_1
20 #define DSI_LEFT DSI_0
21 #define DSI_RIGHT DSI_1
23 /* According to the current drm framework sequence, take the encoder of
24 * DSI_1 as master encoder
26 #define DSI_ENCODER_MASTER DSI_1
27 #define DSI_ENCODER_SLAVE DSI_0
29 struct msm_dsi_manager
{
30 struct msm_dsi
*dsi
[DSI_MAX
];
34 int master_dsi_link_id
;
37 static struct msm_dsi_manager msm_dsim_glb
;
39 #define IS_DUAL_DSI() (msm_dsim_glb.is_dual_dsi)
40 #define IS_SYNC_NEEDED() (msm_dsim_glb.is_sync_needed)
41 #define IS_MASTER_DSI_LINK(id) (msm_dsim_glb.master_dsi_link_id == id)
43 static inline struct msm_dsi
*dsi_mgr_get_dsi(int id
)
45 return msm_dsim_glb
.dsi
[id
];
48 static inline struct msm_dsi
*dsi_mgr_get_other_dsi(int id
)
50 return msm_dsim_glb
.dsi
[(id
+ 1) % DSI_MAX
];
53 static int dsi_mgr_parse_dual_dsi(struct device_node
*np
, int id
)
55 struct msm_dsi_manager
*msm_dsim
= &msm_dsim_glb
;
57 /* We assume 2 dsi nodes have the same information of dual-dsi and
58 * sync-mode, and only one node specifies master in case of dual mode.
60 if (!msm_dsim
->is_dual_dsi
)
61 msm_dsim
->is_dual_dsi
= of_property_read_bool(
62 np
, "qcom,dual-dsi-mode");
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
;
67 if (!msm_dsim
->is_sync_needed
)
68 msm_dsim
->is_sync_needed
= of_property_read_bool(
69 np
, "qcom,sync-dual-dsi");
75 static int dsi_mgr_setup_components(int id
)
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
);
80 struct msm_dsi
*clk_slave_dsi
= dsi_mgr_get_dsi(DSI_CLOCK_SLAVE
);
81 struct msm_dsi_pll
*src_pll
;
85 ret
= msm_dsi_host_register(msm_dsi
->host
, true);
89 msm_dsi_phy_set_usecase(msm_dsi
->phy
, MSM_DSI_PHY_STANDALONE
);
90 src_pll
= msm_dsi_phy_get_pll(msm_dsi
->phy
);
92 return PTR_ERR(src_pll
);
93 ret
= msm_dsi_host_set_src_pll(msm_dsi
->host
, src_pll
);
94 } else if (!other_dsi
) {
97 struct msm_dsi
*master_link_dsi
= IS_MASTER_DSI_LINK(id
) ?
99 struct msm_dsi
*slave_link_dsi
= IS_MASTER_DSI_LINK(id
) ?
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.
108 ret
= msm_dsi_host_register(slave_link_dsi
->host
, false);
111 ret
= msm_dsi_host_register(master_link_dsi
->host
, true);
115 /* PLL0 is to drive both 2 DSI link clocks in Dual DSI mode. */
116 msm_dsi_phy_set_usecase(clk_master_dsi
->phy
,
118 msm_dsi_phy_set_usecase(clk_slave_dsi
->phy
,
120 src_pll
= msm_dsi_phy_get_pll(clk_master_dsi
->phy
);
122 return PTR_ERR(src_pll
);
123 ret
= msm_dsi_host_set_src_pll(msm_dsi
->host
, src_pll
);
126 ret
= msm_dsi_host_set_src_pll(other_dsi
->host
, src_pll
);
132 static int enable_phy(struct msm_dsi
*msm_dsi
, int src_pll_id
,
133 struct msm_dsi_phy_shared_timings
*shared_timings
)
135 struct msm_dsi_phy_clk_request clk_req
;
137 bool is_dual_dsi
= IS_DUAL_DSI();
139 msm_dsi_host_get_phy_clk_req(msm_dsi
->host
, &clk_req
, is_dual_dsi
);
141 ret
= msm_dsi_phy_enable(msm_dsi
->phy
, src_pll_id
, &clk_req
);
142 msm_dsi_phy_get_shared_timings(msm_dsi
->phy
, shared_timings
);
148 dsi_mgr_phy_enable(int id
,
149 struct msm_dsi_phy_shared_timings shared_timings
[DSI_MAX
])
151 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
152 struct msm_dsi
*mdsi
= dsi_mgr_get_dsi(DSI_CLOCK_MASTER
);
153 struct msm_dsi
*sdsi
= dsi_mgr_get_dsi(DSI_CLOCK_SLAVE
);
154 int src_pll_id
= IS_DUAL_DSI() ? DSI_CLOCK_MASTER
: id
;
157 /* In case of dual DSI, some registers in PHY1 have been programmed
158 * during PLL0 clock's set_rate. The PHY1 reset called by host1 here
159 * will silently reset those PHY1 registers. Therefore we need to reset
160 * and enable both PHYs before any PLL clock operation.
162 if (IS_DUAL_DSI() && mdsi
&& sdsi
) {
163 if (!mdsi
->phy_enabled
&& !sdsi
->phy_enabled
) {
164 msm_dsi_host_reset_phy(mdsi
->host
);
165 msm_dsi_host_reset_phy(sdsi
->host
);
167 ret
= enable_phy(mdsi
, src_pll_id
,
168 &shared_timings
[DSI_CLOCK_MASTER
]);
171 ret
= enable_phy(sdsi
, src_pll_id
,
172 &shared_timings
[DSI_CLOCK_SLAVE
]);
174 msm_dsi_phy_disable(mdsi
->phy
);
179 msm_dsi_host_reset_phy(msm_dsi
->host
);
180 ret
= enable_phy(msm_dsi
, src_pll_id
, &shared_timings
[id
]);
185 msm_dsi
->phy_enabled
= true;
190 static void dsi_mgr_phy_disable(int id
)
192 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
193 struct msm_dsi
*mdsi
= dsi_mgr_get_dsi(DSI_CLOCK_MASTER
);
194 struct msm_dsi
*sdsi
= dsi_mgr_get_dsi(DSI_CLOCK_SLAVE
);
197 * In dual-dsi configuration, the phy should be disabled for the
198 * first controller only when the second controller is disabled.
200 msm_dsi
->phy_enabled
= false;
201 if (IS_DUAL_DSI() && mdsi
&& sdsi
) {
202 if (!mdsi
->phy_enabled
&& !sdsi
->phy_enabled
) {
203 msm_dsi_phy_disable(sdsi
->phy
);
204 msm_dsi_phy_disable(mdsi
->phy
);
207 msm_dsi_phy_disable(msm_dsi
->phy
);
211 struct dsi_connector
{
212 struct drm_connector base
;
217 struct drm_bridge base
;
221 #define to_dsi_connector(x) container_of(x, struct dsi_connector, base)
222 #define to_dsi_bridge(x) container_of(x, struct dsi_bridge, base)
224 static inline int dsi_mgr_connector_get_id(struct drm_connector
*connector
)
226 struct dsi_connector
*dsi_connector
= to_dsi_connector(connector
);
227 return dsi_connector
->id
;
230 static int dsi_mgr_bridge_get_id(struct drm_bridge
*bridge
)
232 struct dsi_bridge
*dsi_bridge
= to_dsi_bridge(bridge
);
233 return dsi_bridge
->id
;
236 static enum drm_connector_status
dsi_mgr_connector_detect(
237 struct drm_connector
*connector
, bool force
)
239 int id
= dsi_mgr_connector_get_id(connector
);
240 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
241 struct msm_dsi
*other_dsi
= dsi_mgr_get_other_dsi(id
);
242 struct msm_drm_private
*priv
= connector
->dev
->dev_private
;
243 struct msm_kms
*kms
= priv
->kms
;
246 if (!msm_dsi
->panel
) {
247 msm_dsi
->panel
= msm_dsi_host_get_panel(msm_dsi
->host
,
248 &msm_dsi
->device_flags
);
250 /* There is only 1 panel in the global panel list
251 * for dual DSI mode. Therefore slave dsi should get
252 * the drm_panel instance from master dsi, and
253 * keep using the panel flags got from the current DSI link.
255 if (!msm_dsi
->panel
&& IS_DUAL_DSI() &&
256 !IS_MASTER_DSI_LINK(id
) && other_dsi
)
257 msm_dsi
->panel
= msm_dsi_host_get_panel(
258 other_dsi
->host
, NULL
);
261 if (msm_dsi
->panel
&& kms
->funcs
->set_encoder_mode
) {
262 bool cmd_mode
= !(msm_dsi
->device_flags
&
263 MIPI_DSI_MODE_VIDEO
);
264 struct drm_encoder
*encoder
=
265 msm_dsi_get_encoder(msm_dsi
);
267 kms
->funcs
->set_encoder_mode(kms
, encoder
, cmd_mode
);
270 if (msm_dsi
->panel
&& IS_DUAL_DSI())
271 drm_object_attach_property(&connector
->base
,
272 connector
->dev
->mode_config
.tile_property
, 0);
274 /* Set split display info to kms once dual DSI panel is
275 * connected to both hosts.
277 if (msm_dsi
->panel
&& IS_DUAL_DSI() &&
278 other_dsi
&& other_dsi
->panel
) {
279 bool cmd_mode
= !(msm_dsi
->device_flags
&
280 MIPI_DSI_MODE_VIDEO
);
281 struct drm_encoder
*encoder
= msm_dsi_get_encoder(
282 dsi_mgr_get_dsi(DSI_ENCODER_MASTER
));
283 struct drm_encoder
*slave_enc
= msm_dsi_get_encoder(
284 dsi_mgr_get_dsi(DSI_ENCODER_SLAVE
));
286 if (kms
->funcs
->set_split_display
)
287 kms
->funcs
->set_split_display(kms
, encoder
,
288 slave_enc
, cmd_mode
);
290 pr_err("mdp does not support dual DSI\n");
294 return msm_dsi
->panel
? connector_status_connected
:
295 connector_status_disconnected
;
298 static void dsi_mgr_connector_destroy(struct drm_connector
*connector
)
300 struct dsi_connector
*dsi_connector
= to_dsi_connector(connector
);
304 drm_connector_cleanup(connector
);
306 kfree(dsi_connector
);
309 static int dsi_mgr_connector_get_modes(struct drm_connector
*connector
)
311 int id
= dsi_mgr_connector_get_id(connector
);
312 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
313 struct drm_panel
*panel
= msm_dsi
->panel
;
320 * In dual DSI mode, we have one connector that can be
321 * attached to the drm_panel.
323 drm_panel_attach(panel
, connector
);
324 num
= drm_panel_get_modes(panel
);
331 static int dsi_mgr_connector_mode_valid(struct drm_connector
*connector
,
332 struct drm_display_mode
*mode
)
334 int id
= dsi_mgr_connector_get_id(connector
);
335 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
336 struct drm_encoder
*encoder
= msm_dsi_get_encoder(msm_dsi
);
337 struct msm_drm_private
*priv
= connector
->dev
->dev_private
;
338 struct msm_kms
*kms
= priv
->kms
;
339 long actual
, requested
;
342 requested
= 1000 * mode
->clock
;
343 actual
= kms
->funcs
->round_pixclk(kms
, requested
, encoder
);
345 DBG("requested=%ld, actual=%ld", requested
, actual
);
346 if (actual
!= requested
)
347 return MODE_CLOCK_RANGE
;
352 static struct drm_encoder
*
353 dsi_mgr_connector_best_encoder(struct drm_connector
*connector
)
355 int id
= dsi_mgr_connector_get_id(connector
);
356 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
359 return msm_dsi_get_encoder(msm_dsi
);
362 static void dsi_mgr_bridge_pre_enable(struct drm_bridge
*bridge
)
364 int id
= dsi_mgr_bridge_get_id(bridge
);
365 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
366 struct msm_dsi
*msm_dsi1
= dsi_mgr_get_dsi(DSI_1
);
367 struct mipi_dsi_host
*host
= msm_dsi
->host
;
368 struct drm_panel
*panel
= msm_dsi
->panel
;
369 struct msm_dsi_phy_shared_timings phy_shared_timings
[DSI_MAX
];
370 bool is_dual_dsi
= IS_DUAL_DSI();
374 if (!msm_dsi_device_connected(msm_dsi
))
377 ret
= dsi_mgr_phy_enable(id
, phy_shared_timings
);
381 /* Do nothing with the host if it is slave-DSI in case of dual DSI */
382 if (is_dual_dsi
&& !IS_MASTER_DSI_LINK(id
))
385 ret
= msm_dsi_host_power_on(host
, &phy_shared_timings
[id
], is_dual_dsi
);
387 pr_err("%s: power on host %d failed, %d\n", __func__
, id
, ret
);
391 if (is_dual_dsi
&& msm_dsi1
) {
392 ret
= msm_dsi_host_power_on(msm_dsi1
->host
,
393 &phy_shared_timings
[DSI_1
], is_dual_dsi
);
395 pr_err("%s: power on host1 failed, %d\n",
401 /* Always call panel functions once, because even for dual panels,
402 * there is only one drm_panel instance.
405 ret
= drm_panel_prepare(panel
);
407 pr_err("%s: prepare panel %d failed, %d\n", __func__
,
409 goto panel_prep_fail
;
413 ret
= msm_dsi_host_enable(host
);
415 pr_err("%s: enable host %d failed, %d\n", __func__
, id
, ret
);
419 if (is_dual_dsi
&& msm_dsi1
) {
420 ret
= msm_dsi_host_enable(msm_dsi1
->host
);
422 pr_err("%s: enable host1 failed, %d\n", __func__
, ret
);
428 ret
= drm_panel_enable(panel
);
430 pr_err("%s: enable panel %d failed, %d\n", __func__
, id
,
439 if (is_dual_dsi
&& msm_dsi1
)
440 msm_dsi_host_disable(msm_dsi1
->host
);
442 msm_dsi_host_disable(host
);
445 drm_panel_unprepare(panel
);
447 if (is_dual_dsi
&& msm_dsi1
)
448 msm_dsi_host_power_off(msm_dsi1
->host
);
450 msm_dsi_host_power_off(host
);
452 dsi_mgr_phy_disable(id
);
457 static void dsi_mgr_bridge_enable(struct drm_bridge
*bridge
)
462 static void dsi_mgr_bridge_disable(struct drm_bridge
*bridge
)
467 static void dsi_mgr_bridge_post_disable(struct drm_bridge
*bridge
)
469 int id
= dsi_mgr_bridge_get_id(bridge
);
470 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
471 struct msm_dsi
*msm_dsi1
= dsi_mgr_get_dsi(DSI_1
);
472 struct mipi_dsi_host
*host
= msm_dsi
->host
;
473 struct drm_panel
*panel
= msm_dsi
->panel
;
474 bool is_dual_dsi
= IS_DUAL_DSI();
479 if (!msm_dsi_device_connected(msm_dsi
))
483 * Do nothing with the host if it is slave-DSI in case of dual DSI.
484 * It is safe to call dsi_mgr_phy_disable() here because a single PHY
485 * won't be diabled until both PHYs request disable.
487 if (is_dual_dsi
&& !IS_MASTER_DSI_LINK(id
))
491 ret
= drm_panel_disable(panel
);
493 pr_err("%s: Panel %d OFF failed, %d\n", __func__
, id
,
497 ret
= msm_dsi_host_disable(host
);
499 pr_err("%s: host %d disable failed, %d\n", __func__
, id
, ret
);
501 if (is_dual_dsi
&& msm_dsi1
) {
502 ret
= msm_dsi_host_disable(msm_dsi1
->host
);
504 pr_err("%s: host1 disable failed, %d\n", __func__
, ret
);
508 ret
= drm_panel_unprepare(panel
);
510 pr_err("%s: Panel %d unprepare failed,%d\n", __func__
,
514 ret
= msm_dsi_host_power_off(host
);
516 pr_err("%s: host %d power off failed,%d\n", __func__
, id
, ret
);
518 if (is_dual_dsi
&& msm_dsi1
) {
519 ret
= msm_dsi_host_power_off(msm_dsi1
->host
);
521 pr_err("%s: host1 power off failed, %d\n",
526 dsi_mgr_phy_disable(id
);
529 static void dsi_mgr_bridge_mode_set(struct drm_bridge
*bridge
,
530 const struct drm_display_mode
*mode
,
531 const struct drm_display_mode
*adjusted_mode
)
533 int id
= dsi_mgr_bridge_get_id(bridge
);
534 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
535 struct msm_dsi
*other_dsi
= dsi_mgr_get_other_dsi(id
);
536 struct mipi_dsi_host
*host
= msm_dsi
->host
;
537 bool is_dual_dsi
= IS_DUAL_DSI();
539 DBG("set mode: " DRM_MODE_FMT
, DRM_MODE_ARG(mode
));
541 if (is_dual_dsi
&& !IS_MASTER_DSI_LINK(id
))
544 msm_dsi_host_set_display_mode(host
, adjusted_mode
);
545 if (is_dual_dsi
&& other_dsi
)
546 msm_dsi_host_set_display_mode(other_dsi
->host
, adjusted_mode
);
549 static const struct drm_connector_funcs dsi_mgr_connector_funcs
= {
550 .detect
= dsi_mgr_connector_detect
,
551 .fill_modes
= drm_helper_probe_single_connector_modes
,
552 .destroy
= dsi_mgr_connector_destroy
,
553 .reset
= drm_atomic_helper_connector_reset
,
554 .atomic_duplicate_state
= drm_atomic_helper_connector_duplicate_state
,
555 .atomic_destroy_state
= drm_atomic_helper_connector_destroy_state
,
558 static const struct drm_connector_helper_funcs dsi_mgr_conn_helper_funcs
= {
559 .get_modes
= dsi_mgr_connector_get_modes
,
560 .mode_valid
= dsi_mgr_connector_mode_valid
,
561 .best_encoder
= dsi_mgr_connector_best_encoder
,
564 static const struct drm_bridge_funcs dsi_mgr_bridge_funcs
= {
565 .pre_enable
= dsi_mgr_bridge_pre_enable
,
566 .enable
= dsi_mgr_bridge_enable
,
567 .disable
= dsi_mgr_bridge_disable
,
568 .post_disable
= dsi_mgr_bridge_post_disable
,
569 .mode_set
= dsi_mgr_bridge_mode_set
,
572 /* initialize connector when we're connected to a drm_panel */
573 struct drm_connector
*msm_dsi_manager_connector_init(u8 id
)
575 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
576 struct drm_connector
*connector
= NULL
;
577 struct dsi_connector
*dsi_connector
;
580 dsi_connector
= kzalloc(sizeof(*dsi_connector
), GFP_KERNEL
);
582 return ERR_PTR(-ENOMEM
);
584 dsi_connector
->id
= id
;
586 connector
= &dsi_connector
->base
;
588 ret
= drm_connector_init(msm_dsi
->dev
, connector
,
589 &dsi_mgr_connector_funcs
, DRM_MODE_CONNECTOR_DSI
);
593 drm_connector_helper_add(connector
, &dsi_mgr_conn_helper_funcs
);
595 /* Enable HPD to let hpd event is handled
596 * when panel is attached to the host.
598 connector
->polled
= DRM_CONNECTOR_POLL_HPD
;
600 /* Display driver doesn't support interlace now. */
601 connector
->interlace_allowed
= 0;
602 connector
->doublescan_allowed
= 0;
604 drm_connector_attach_encoder(connector
, msm_dsi
->encoder
);
609 bool msm_dsi_manager_validate_current_config(u8 id
)
611 bool is_dual_dsi
= IS_DUAL_DSI();
614 * For dual DSI, we only have one drm panel. For this
615 * use case, we register only one bridge/connector.
616 * Skip bridge/connector initialisation if it is
617 * slave-DSI for dual DSI configuration.
619 if (is_dual_dsi
&& !IS_MASTER_DSI_LINK(id
)) {
620 DBG("Skip bridge registration for slave DSI->id: %d\n", id
);
626 /* initialize bridge */
627 struct drm_bridge
*msm_dsi_manager_bridge_init(u8 id
)
629 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
630 struct drm_bridge
*bridge
= NULL
;
631 struct dsi_bridge
*dsi_bridge
;
632 struct drm_encoder
*encoder
;
635 dsi_bridge
= devm_kzalloc(msm_dsi
->dev
->dev
,
636 sizeof(*dsi_bridge
), GFP_KERNEL
);
644 encoder
= msm_dsi
->encoder
;
646 bridge
= &dsi_bridge
->base
;
647 bridge
->funcs
= &dsi_mgr_bridge_funcs
;
649 ret
= drm_bridge_attach(encoder
, bridge
, NULL
);
657 msm_dsi_manager_bridge_destroy(bridge
);
662 struct drm_connector
*msm_dsi_manager_ext_bridge_init(u8 id
)
664 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
665 struct drm_device
*dev
= msm_dsi
->dev
;
666 struct drm_encoder
*encoder
;
667 struct drm_bridge
*int_bridge
, *ext_bridge
;
668 struct drm_connector
*connector
;
669 struct list_head
*connector_list
;
671 int_bridge
= msm_dsi
->bridge
;
672 ext_bridge
= msm_dsi
->external_bridge
=
673 msm_dsi_host_get_bridge(msm_dsi
->host
);
675 encoder
= msm_dsi
->encoder
;
677 /* link the internal dsi bridge to the external bridge */
678 drm_bridge_attach(encoder
, ext_bridge
, int_bridge
);
681 * we need the drm_connector created by the external bridge
682 * driver (or someone else) to feed it to our driver's
683 * priv->connector[] list, mainly for msm_fbdev_init()
685 connector_list
= &dev
->mode_config
.connector_list
;
687 list_for_each_entry(connector
, connector_list
, head
) {
688 if (drm_connector_has_possible_encoder(connector
, encoder
))
692 return ERR_PTR(-ENODEV
);
695 void msm_dsi_manager_bridge_destroy(struct drm_bridge
*bridge
)
699 int msm_dsi_manager_cmd_xfer(int id
, const struct mipi_dsi_msg
*msg
)
701 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
702 struct msm_dsi
*msm_dsi0
= dsi_mgr_get_dsi(DSI_0
);
703 struct mipi_dsi_host
*host
= msm_dsi
->host
;
704 bool is_read
= (msg
->rx_buf
&& msg
->rx_len
);
705 bool need_sync
= (IS_SYNC_NEEDED() && !is_read
);
708 if (!msg
->tx_buf
|| !msg
->tx_len
)
711 /* In dual master case, panel requires the same commands sent to
712 * both DSI links. Host issues the command trigger to both links
713 * when DSI_1 calls the cmd transfer function, no matter it happens
714 * before or after DSI_0 cmd transfer.
716 if (need_sync
&& (id
== DSI_0
))
717 return is_read
? msg
->rx_len
: msg
->tx_len
;
719 if (need_sync
&& msm_dsi0
) {
720 ret
= msm_dsi_host_xfer_prepare(msm_dsi0
->host
, msg
);
722 pr_err("%s: failed to prepare non-trigger host, %d\n",
727 ret
= msm_dsi_host_xfer_prepare(host
, msg
);
729 pr_err("%s: failed to prepare host, %d\n", __func__
, ret
);
733 ret
= is_read
? msm_dsi_host_cmd_rx(host
, msg
) :
734 msm_dsi_host_cmd_tx(host
, msg
);
736 msm_dsi_host_xfer_restore(host
, msg
);
739 if (need_sync
&& msm_dsi0
)
740 msm_dsi_host_xfer_restore(msm_dsi0
->host
, msg
);
745 bool msm_dsi_manager_cmd_xfer_trigger(int id
, u32 dma_base
, u32 len
)
747 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
748 struct msm_dsi
*msm_dsi0
= dsi_mgr_get_dsi(DSI_0
);
749 struct mipi_dsi_host
*host
= msm_dsi
->host
;
751 if (IS_SYNC_NEEDED() && (id
== DSI_0
))
754 if (IS_SYNC_NEEDED() && msm_dsi0
)
755 msm_dsi_host_cmd_xfer_commit(msm_dsi0
->host
, dma_base
, len
);
757 msm_dsi_host_cmd_xfer_commit(host
, dma_base
, len
);
762 void msm_dsi_manager_attach_dsi_device(int id
, u32 device_flags
)
764 struct msm_dsi
*msm_dsi
= dsi_mgr_get_dsi(id
);
765 struct drm_device
*dev
= msm_dsi
->dev
;
766 struct msm_drm_private
*priv
;
768 struct drm_encoder
*encoder
;
772 * drm_device pointer is assigned to msm_dsi only in the modeset_init
773 * path. If mipi_dsi_attach() happens in DSI driver's probe path
774 * (generally the case when we're connected to a drm_panel of the type
775 * mipi_dsi_device), this would be NULL. In such cases, try to set the
776 * encoder mode in the DSI connector's detect() op.
781 priv
= dev
->dev_private
;
783 encoder
= msm_dsi_get_encoder(msm_dsi
);
784 cmd_mode
= !(device_flags
&
785 MIPI_DSI_MODE_VIDEO
);
787 if (encoder
&& kms
->funcs
->set_encoder_mode
)
788 kms
->funcs
->set_encoder_mode(kms
, encoder
, cmd_mode
);
791 int msm_dsi_manager_register(struct msm_dsi
*msm_dsi
)
793 struct msm_dsi_manager
*msm_dsim
= &msm_dsim_glb
;
794 int id
= msm_dsi
->id
;
798 pr_err("%s: invalid id %d\n", __func__
, id
);
802 if (msm_dsim
->dsi
[id
]) {
803 pr_err("%s: dsi%d already registered\n", __func__
, id
);
807 msm_dsim
->dsi
[id
] = msm_dsi
;
809 ret
= dsi_mgr_parse_dual_dsi(msm_dsi
->pdev
->dev
.of_node
, id
);
811 pr_err("%s: failed to parse dual DSI info\n", __func__
);
815 ret
= dsi_mgr_setup_components(id
);
817 pr_err("%s: failed to register mipi dsi host for DSI %d\n",
825 msm_dsim
->dsi
[id
] = NULL
;
829 void msm_dsi_manager_unregister(struct msm_dsi
*msm_dsi
)
831 struct msm_dsi_manager
*msm_dsim
= &msm_dsim_glb
;
834 msm_dsi_host_unregister(msm_dsi
->host
);
836 if (msm_dsi
->id
>= 0)
837 msm_dsim
->dsi
[msm_dsi
->id
] = NULL
;