1 // SPDX-License-Identifier: GPL-2.0+
8 #include <linux/media-bus-format.h>
18 #include <dt-bindings/firmware/imx/rsrc.h>
20 #define DRIVER_NAME		"imx8qxp-display-pixel-link"
43 	ret = imx_sc_misc_set_control(pl->ipc_handle, pl->sink_rsc,  in imx8qxp_pixel_link_enable_mst_en()
44 				      pl->mst_en_ctrl, true);  in imx8qxp_pixel_link_enable_mst_en()
46 		DRM_DEV_ERROR(pl->dev,  in imx8qxp_pixel_link_enable_mst_en()
48 			      pl->dc_id, pl->stream_id, ret);  in imx8qxp_pixel_link_enable_mst_en()
55 	ret = imx_sc_misc_set_control(pl->ipc_handle, pl->sink_rsc,  in imx8qxp_pixel_link_enable_mst_vld()
56 				      pl->mst_vld_ctrl, true);  in imx8qxp_pixel_link_enable_mst_vld()
58 		DRM_DEV_ERROR(pl->dev,  in imx8qxp_pixel_link_enable_mst_vld()
60 			      pl->dc_id, pl->stream_id, ret);  in imx8qxp_pixel_link_enable_mst_vld()
67 	ret = imx_sc_misc_set_control(pl->ipc_handle, pl->sink_rsc,  in imx8qxp_pixel_link_enable_sync()
68 				      pl->sync_ctrl, true);  in imx8qxp_pixel_link_enable_sync()
70 		DRM_DEV_ERROR(pl->dev,  in imx8qxp_pixel_link_enable_sync()
72 			      pl->dc_id, pl->stream_id, ret);  in imx8qxp_pixel_link_enable_sync()
79 	ret = imx_sc_misc_set_control(pl->ipc_handle, pl->sink_rsc,  in imx8qxp_pixel_link_disable_mst_en()
80 				      pl->mst_en_ctrl, false);  in imx8qxp_pixel_link_disable_mst_en()
82 		DRM_DEV_ERROR(pl->dev,  in imx8qxp_pixel_link_disable_mst_en()
84 			      pl->dc_id, pl->stream_id, ret);  in imx8qxp_pixel_link_disable_mst_en()
93 	ret = imx_sc_misc_set_control(pl->ipc_handle, pl->sink_rsc,  in imx8qxp_pixel_link_disable_mst_vld()
94 				      pl->mst_vld_ctrl, false);  in imx8qxp_pixel_link_disable_mst_vld()
96 		DRM_DEV_ERROR(pl->dev,  in imx8qxp_pixel_link_disable_mst_vld()
98 			      pl->dc_id, pl->stream_id, ret);  in imx8qxp_pixel_link_disable_mst_vld()
107 	ret = imx_sc_misc_set_control(pl->ipc_handle, pl->sink_rsc,  in imx8qxp_pixel_link_disable_sync()
108 				      pl->sync_ctrl, false);  in imx8qxp_pixel_link_disable_sync()
110 		DRM_DEV_ERROR(pl->dev,  in imx8qxp_pixel_link_disable_sync()
112 			      pl->dc_id, pl->stream_id, ret);  in imx8qxp_pixel_link_disable_sync()
121 	ret = imx_sc_misc_set_control(pl->ipc_handle,  in imx8qxp_pixel_link_set_mst_addr()
122 				      pl->sink_rsc, pl->mst_addr_ctrl,  in imx8qxp_pixel_link_set_mst_addr()
123 				      pl->mst_addr);  in imx8qxp_pixel_link_set_mst_addr()
125 		DRM_DEV_ERROR(pl->dev,  in imx8qxp_pixel_link_set_mst_addr()
127 			      pl->dc_id, pl->stream_id, pl->mst_addr, ret);  in imx8qxp_pixel_link_set_mst_addr()
133 	struct imx8qxp_pixel_link *pl = bridge->driver_private;  in imx8qxp_pixel_link_bridge_attach()
136 		DRM_DEV_ERROR(pl->dev,  in imx8qxp_pixel_link_bridge_attach()
138 		return -EINVAL;  in imx8qxp_pixel_link_bridge_attach()
141 	if (!bridge->encoder) {  in imx8qxp_pixel_link_bridge_attach()
142 		DRM_DEV_ERROR(pl->dev, "missing encoder\n");  in imx8qxp_pixel_link_bridge_attach()
143 		return -ENODEV;  in imx8qxp_pixel_link_bridge_attach()
146 	return drm_bridge_attach(bridge->encoder,  in imx8qxp_pixel_link_bridge_attach()
147 				 pl->next_bridge, bridge,  in imx8qxp_pixel_link_bridge_attach()
156 	struct imx8qxp_pixel_link *pl = bridge->driver_private;  in imx8qxp_pixel_link_bridge_mode_set()
165 	struct imx8qxp_pixel_link *pl = bridge->driver_private;  in imx8qxp_pixel_link_bridge_atomic_enable()
176 	struct imx8qxp_pixel_link *pl = bridge->driver_private;  in imx8qxp_pixel_link_bridge_atomic_disable()
268 	struct device_node *np = pl->dev->of_node;  in imx8qxp_pixel_link_find_next_bridge()
292 		DRM_DEV_ERROR(pl->dev, "no available output port\n");  in imx8qxp_pixel_link_find_next_bridge()
293 		return ERR_PTR(-ENODEV);  in imx8qxp_pixel_link_find_next_bridge()
301 		if (!of_device_is_available(remote->parent)) {  in imx8qxp_pixel_link_find_next_bridge()
302 			DRM_DEV_DEBUG(pl->dev,  in imx8qxp_pixel_link_find_next_bridge()
312 			return ERR_PTR(-EPROBE_DEFER);  in imx8qxp_pixel_link_find_next_bridge()
315 		/* specially select the next bridge with companion PXL2DPI */  in imx8qxp_pixel_link_find_next_bridge()
316 		if (of_property_present(remote, "fsl,companion-pxl2dpi"))  in imx8qxp_pixel_link_find_next_bridge()
324 	pl->mst_addr = port_id - 1;  in imx8qxp_pixel_link_find_next_bridge()
332 	struct device *dev = &pdev->dev;  in imx8qxp_pixel_link_bridge_probe()
333 	struct device_node *np = dev->of_node;  in imx8qxp_pixel_link_bridge_probe()
338 		return -ENOMEM;  in imx8qxp_pixel_link_bridge_probe()
340 	ret = imx_scu_get_handle(&pl->ipc_handle);  in imx8qxp_pixel_link_bridge_probe()
342 		if (ret != -EPROBE_DEFER)  in imx8qxp_pixel_link_bridge_probe()
348 	ret = of_property_read_u8(np, "fsl,dc-id", &pl->dc_id);  in imx8qxp_pixel_link_bridge_probe()
354 	ret = of_property_read_u8(np, "fsl,dc-stream-id", &pl->stream_id);  in imx8qxp_pixel_link_bridge_probe()
360 	pl->dev = dev;  in imx8qxp_pixel_link_bridge_probe()
362 	pl->sink_rsc = pl->dc_id ? IMX_SC_R_DC_1 : IMX_SC_R_DC_0;  in imx8qxp_pixel_link_bridge_probe()
364 	if (pl->stream_id == 0) {  in imx8qxp_pixel_link_bridge_probe()
365 		pl->mst_addr_ctrl = IMX_SC_C_PXL_LINK_MST1_ADDR;  in imx8qxp_pixel_link_bridge_probe()
366 		pl->mst_en_ctrl   = IMX_SC_C_PXL_LINK_MST1_ENB;  in imx8qxp_pixel_link_bridge_probe()
367 		pl->mst_vld_ctrl  = IMX_SC_C_PXL_LINK_MST1_VLD;  in imx8qxp_pixel_link_bridge_probe()
368 		pl->sync_ctrl     = IMX_SC_C_SYNC_CTRL0;  in imx8qxp_pixel_link_bridge_probe()
370 		pl->mst_addr_ctrl = IMX_SC_C_PXL_LINK_MST2_ADDR;  in imx8qxp_pixel_link_bridge_probe()
371 		pl->mst_en_ctrl   = IMX_SC_C_PXL_LINK_MST2_ENB;  in imx8qxp_pixel_link_bridge_probe()
372 		pl->mst_vld_ctrl  = IMX_SC_C_PXL_LINK_MST2_VLD;  in imx8qxp_pixel_link_bridge_probe()
373 		pl->sync_ctrl     = IMX_SC_C_SYNC_CTRL1;  in imx8qxp_pixel_link_bridge_probe()
381 	pl->next_bridge = imx8qxp_pixel_link_find_next_bridge(pl);  in imx8qxp_pixel_link_bridge_probe()
382 	if (IS_ERR(pl->next_bridge)) {  in imx8qxp_pixel_link_bridge_probe()
383 		ret = PTR_ERR(pl->next_bridge);  in imx8qxp_pixel_link_bridge_probe()
384 		if (ret != -EPROBE_DEFER)  in imx8qxp_pixel_link_bridge_probe()
392 	pl->bridge.driver_private = pl;  in imx8qxp_pixel_link_bridge_probe()
393 	pl->bridge.funcs = &imx8qxp_pixel_link_bridge_funcs;  in imx8qxp_pixel_link_bridge_probe()
394 	pl->bridge.of_node = np;  in imx8qxp_pixel_link_bridge_probe()
396 	drm_bridge_add(&pl->bridge);  in imx8qxp_pixel_link_bridge_probe()
405 	drm_bridge_remove(&pl->bridge);  in imx8qxp_pixel_link_bridge_remove()
409 	{ .compatible = "fsl,imx8qm-dc-pixel-link", },
410 	{ .compatible = "fsl,imx8qxp-dc-pixel-link", },