1 // SPDX-License-Identifier: GPL-2.0-only
9 #include "dsi.h"
18  * DSI_1 as master encoder
24 	struct msm_dsi *dsi[DSI_MAX];  member
39 	return msm_dsim_glb.dsi[id];  in dsi_mgr_get_dsi()
44 	return msm_dsim_glb.dsi[(id + 1) % DSI_MAX];  in dsi_mgr_get_other_dsi()
51 	/* We assume 2 dsi nodes have the same information of bonded dsi and  in dsi_mgr_parse_of()
52 	 * sync-mode, and only one node specifies master in case of bonded mode.  in dsi_mgr_parse_of()
54 	if (!msm_dsim->is_bonded_dsi)  in dsi_mgr_parse_of()
55 		msm_dsim->is_bonded_dsi = of_property_read_bool(np, "qcom,dual-dsi-mode");  in dsi_mgr_parse_of()
57 	if (msm_dsim->is_bonded_dsi) {  in dsi_mgr_parse_of()
58 		if (of_property_read_bool(np, "qcom,master-dsi"))  in dsi_mgr_parse_of()
59 			msm_dsim->master_dsi_link_id = id;  in dsi_mgr_parse_of()
60 		if (!msm_dsim->is_sync_needed)  in dsi_mgr_parse_of()
61 			msm_dsim->is_sync_needed = of_property_read_bool(  in dsi_mgr_parse_of()
62 					np, "qcom,sync-dual-dsi");  in dsi_mgr_parse_of()
81 		msm_dsi_phy_set_usecase(msm_dsi->phy, MSM_DSI_PHY_STANDALONE);  in dsi_mgr_setup_components()
82 		msm_dsi_host_set_phy_mode(msm_dsi->host, msm_dsi->phy);  in dsi_mgr_setup_components()
84 		ret = msm_dsi_host_register(msm_dsi->host);  in dsi_mgr_setup_components()
94 		 * PLL0 is to drive both DSI link clocks in bonded DSI mode.  in dsi_mgr_setup_components()
99 		msm_dsi_phy_set_usecase(clk_master_dsi->phy,  in dsi_mgr_setup_components()
101 		msm_dsi_phy_set_usecase(clk_slave_dsi->phy,  in dsi_mgr_setup_components()
103 		msm_dsi_host_set_phy_mode(msm_dsi->host, msm_dsi->phy);  in dsi_mgr_setup_components()
104 		msm_dsi_host_set_phy_mode(other_dsi->host, other_dsi->phy);  in dsi_mgr_setup_components()
106 		/* Register slave host first, so that slave DSI device  in dsi_mgr_setup_components()
107 		 * has a chance to probe, and do not block the master  in dsi_mgr_setup_components()
108 		 * DSI device's probe.  in dsi_mgr_setup_components()
110 		 * because only master DSI device adds the panel to global  in dsi_mgr_setup_components()
111 		 * panel list. The panel's device is the master DSI device.  in dsi_mgr_setup_components()
113 		ret = msm_dsi_host_register(slave_link_dsi->host);  in dsi_mgr_setup_components()
116 		ret = msm_dsi_host_register(master_link_dsi->host);  in dsi_mgr_setup_components()
130 	msm_dsi_host_get_phy_clk_req(msm_dsi->host, &clk_req, is_bonded_dsi);  in enable_phy()
132 	return msm_dsi_phy_enable(msm_dsi->phy, &clk_req, shared_timings);  in enable_phy()
144 	/* In case of bonded DSI, some registers in PHY1 have been programmed  in dsi_mgr_phy_enable()
150 		if (!mdsi->phy_enabled && !sdsi->phy_enabled) {  in dsi_mgr_phy_enable()
151 			msm_dsi_host_reset_phy(mdsi->host);  in dsi_mgr_phy_enable()
152 			msm_dsi_host_reset_phy(sdsi->host);  in dsi_mgr_phy_enable()
161 				msm_dsi_phy_disable(mdsi->phy);  in dsi_mgr_phy_enable()
166 		msm_dsi_host_reset_phy(msm_dsi->host);  in dsi_mgr_phy_enable()
172 	msm_dsi->phy_enabled = true;  in dsi_mgr_phy_enable()
183 	/* disable DSI phy  in dsi_mgr_phy_disable()
184 	 * In bonded dsi configuration, the phy should be disabled for the  in dsi_mgr_phy_disable()
187 	msm_dsi->phy_enabled = false;  in dsi_mgr_phy_disable()
189 		if (!mdsi->phy_enabled && !sdsi->phy_enabled) {  in dsi_mgr_phy_disable()
190 			msm_dsi_phy_disable(sdsi->phy);  in dsi_mgr_phy_disable()
191 			msm_dsi_phy_disable(mdsi->phy);  in dsi_mgr_phy_disable()
194 		msm_dsi_phy_disable(msm_dsi->phy);  in dsi_mgr_phy_disable()
208 	return dsi_bridge->id;  in dsi_mgr_bridge_get_id()
216 	struct mipi_dsi_host *host = msm_dsi->host;  in dsi_mgr_bridge_power_on()
227 	ret = msm_dsi_host_power_on(host, &phy_shared_timings[id], is_bonded_dsi, msm_dsi->phy);  in dsi_mgr_bridge_power_on()
234 		ret = msm_dsi_host_power_on(msm_dsi1->host,  in dsi_mgr_bridge_power_on()
235 				&phy_shared_timings[DSI_1], is_bonded_dsi, msm_dsi1->phy);  in dsi_mgr_bridge_power_on()
245 	 * that the panel can communicate over the DSI link.  in dsi_mgr_bridge_power_on()
249 		msm_dsi_host_enable_irq(msm_dsi1->host);  in dsi_mgr_bridge_power_on()
266 	struct mipi_dsi_host *host = msm_dsi->host;  in dsi_mgr_bridge_power_off()
271 		msm_dsi_host_disable_irq(msm_dsi1->host);  in dsi_mgr_bridge_power_off()
272 		msm_dsi_host_power_off(msm_dsi1->host);  in dsi_mgr_bridge_power_off()
283 	struct mipi_dsi_host *host = msm_dsi->host;  in dsi_mgr_bridge_pre_enable()
289 	/* Do nothing with the host if it is slave-DSI in case of bonded DSI */  in dsi_mgr_bridge_pre_enable()
295 		dev_err(&msm_dsi->pdev->dev, "Power on failed: %d\n", ret);  in dsi_mgr_bridge_pre_enable()
306 		ret = msm_dsi_host_enable(msm_dsi1->host);  in dsi_mgr_bridge_pre_enable()
326 	/* if dual dsi, trigger tpg on master first then slave */  in msm_dsi_manager_tpg_enable()
328 		msm_dsi_host_test_pattern_en(m_dsi->host);  in msm_dsi_manager_tpg_enable()
330 			msm_dsi_host_test_pattern_en(s_dsi->host);  in msm_dsi_manager_tpg_enable()
339 	struct mipi_dsi_host *host = msm_dsi->host;  in dsi_mgr_bridge_post_disable()
346 	 * Do nothing with the host if it is slave-DSI in case of bonded DSI.  in dsi_mgr_bridge_post_disable()
358 		ret = msm_dsi_host_disable(msm_dsi1->host);  in dsi_mgr_bridge_post_disable()
365 		msm_dsi_host_disable_irq(msm_dsi1->host);  in dsi_mgr_bridge_post_disable()
368 	msm_dsi_phy_pll_save_state(msm_dsi->phy);  in dsi_mgr_bridge_post_disable()
375 		ret = msm_dsi_host_power_off(msm_dsi1->host);  in dsi_mgr_bridge_post_disable()
392 	struct mipi_dsi_host *host = msm_dsi->host;  in dsi_mgr_bridge_mode_set()
402 		msm_dsi_host_set_display_mode(other_dsi->host, adjusted_mode);  in dsi_mgr_bridge_mode_set()
411 	struct mipi_dsi_host *host = msm_dsi->host;  in dsi_mgr_bridge_mode_valid()
412 	struct platform_device *pdev = msm_dsi->pdev;  in dsi_mgr_bridge_mode_valid()
418 	opp = dev_pm_opp_find_freq_ceil(&pdev->dev, &byte_clk_rate);  in dsi_mgr_bridge_mode_valid()
421 	} else if (PTR_ERR(opp) == -ERANGE) {  in dsi_mgr_bridge_mode_valid()
425 		 * -ERANGE in such case.  in dsi_mgr_bridge_mode_valid()
427 		if (dev_pm_opp_get_opp_count(&pdev->dev) != 0)  in dsi_mgr_bridge_mode_valid()
442 	return drm_bridge_attach(bridge->encoder, msm_dsi->next_bridge,  in dsi_mgr_bridge_attach()
458 	struct drm_device *dev = msm_dsi->dev;  in msm_dsi_manager_connector_init()
464 	dsi_bridge = devm_kzalloc(msm_dsi->dev->dev,  in msm_dsi_manager_connector_init()
467 		return -ENOMEM;  in msm_dsi_manager_connector_init()
469 	dsi_bridge->id = msm_dsi->id;  in msm_dsi_manager_connector_init()
471 	bridge = &dsi_bridge->base;  in msm_dsi_manager_connector_init()
472 	bridge->funcs = &dsi_mgr_bridge_funcs;  in msm_dsi_manager_connector_init()
474 	ret = devm_drm_bridge_add(msm_dsi->dev->dev, bridge);  in msm_dsi_manager_connector_init()
499 	struct mipi_dsi_host *host = msm_dsi->host;  in msm_dsi_manager_cmd_xfer()
500 	bool is_read = (msg->rx_buf && msg->rx_len);  in msm_dsi_manager_cmd_xfer()
504 	if (!msg->tx_buf || !msg->tx_len)  in msm_dsi_manager_cmd_xfer()
507 	/* In bonded master case, panel requires the same commands sent to  in msm_dsi_manager_cmd_xfer()
508 	 * both DSI links. Host issues the command trigger to both links  in msm_dsi_manager_cmd_xfer()
513 		return is_read ? msg->rx_len : msg->tx_len;  in msm_dsi_manager_cmd_xfer()
516 		ret = msm_dsi_host_xfer_prepare(msm_dsi0->host, msg);  in msm_dsi_manager_cmd_xfer()
518 			pr_err("%s: failed to prepare non-trigger host, %d\n",  in msm_dsi_manager_cmd_xfer()
536 		msm_dsi_host_xfer_restore(msm_dsi0->host, msg);  in msm_dsi_manager_cmd_xfer()
545 	struct mipi_dsi_host *host = msm_dsi->host;  in msm_dsi_manager_cmd_xfer_trigger()
551 		msm_dsi_host_cmd_xfer_commit(msm_dsi0->host, dma_base, len);  in msm_dsi_manager_cmd_xfer_trigger()
561 	int id = msm_dsi->id;  in msm_dsi_manager_register()
566 		return -EINVAL;  in msm_dsi_manager_register()
569 	if (msm_dsim->dsi[id]) {  in msm_dsi_manager_register()
570 		pr_err("%s: dsi%d already registered\n", __func__, id);  in msm_dsi_manager_register()
571 		return -EBUSY;  in msm_dsi_manager_register()
574 	msm_dsim->dsi[id] = msm_dsi;  in msm_dsi_manager_register()
576 	ret = dsi_mgr_parse_of(msm_dsi->pdev->dev.of_node, id);  in msm_dsi_manager_register()
578 		pr_err("%s: failed to parse OF DSI info\n", __func__);  in msm_dsi_manager_register()
584 		pr_err("%s: failed to register mipi dsi host for DSI %d: %d\n",  in msm_dsi_manager_register()
592 	msm_dsim->dsi[id] = NULL;  in msm_dsi_manager_register()
600 	if (msm_dsi->host)  in msm_dsi_manager_unregister()
601 		msm_dsi_host_unregister(msm_dsi->host);  in msm_dsi_manager_unregister()
603 	if (msm_dsi->id >= 0)  in msm_dsi_manager_unregister()
604 		msm_dsim->dsi[msm_dsi->id] = NULL;  in msm_dsi_manager_unregister()
614 	return IS_MASTER_DSI_LINK(msm_dsi->id);  in msm_dsi_is_master_dsi()
619 	return msm_dsi->te_source;  in msm_dsi_get_te_source()