1 // SPDX-License-Identifier: GPL-2.0+
3  * i.MX drm driver - parallel display implementation
9 #include <linux/media-bus-format.h>
24 #include "imx-drm.h"
58 	struct drm_display_info *di = &conn_state->connector->display_info;  in imx_pd_bridge_atomic_get_output_bus_fmts()
62 	if (!imxpd->bus_format && !di->num_bus_formats) {  in imx_pd_bridge_atomic_get_output_bus_fmts()
73 	if (!imxpd->bus_format && di->num_bus_formats)  in imx_pd_bridge_atomic_get_output_bus_fmts()
74 		output_fmts[0] = di->bus_formats[0];  in imx_pd_bridge_atomic_get_output_bus_fmts()
76 		output_fmts[0] = imxpd->bus_format;  in imx_pd_bridge_atomic_get_output_bus_fmts()
106 	 * use the static bus format definition (imxpd->bus_format) if it's  in imx_pd_bridge_atomic_get_input_bus_fmts()
110 		output_fmt = imxpd->bus_format ? : MEDIA_BUS_FMT_RGB888_1X24;  in imx_pd_bridge_atomic_get_input_bus_fmts()
113 	if ((imxpd->bus_format && imxpd->bus_format != output_fmt) ||  in imx_pd_bridge_atomic_get_input_bus_fmts()
134 	struct drm_display_info *di = &conn_state->connector->display_info;  in imx_pd_bridge_atomic_check()
141 		next_bridge_state = drm_atomic_get_new_bridge_state(crtc_state->state,  in imx_pd_bridge_atomic_check()
145 		bus_flags = next_bridge_state->input_bus_cfg.flags;  in imx_pd_bridge_atomic_check()
147 		bus_flags = di->bus_flags;  in imx_pd_bridge_atomic_check()
149 	bus_fmt = bridge_state->input_bus_cfg.format;  in imx_pd_bridge_atomic_check()
151 		return -EINVAL;  in imx_pd_bridge_atomic_check()
153 	bridge_state->output_bus_cfg.flags = bus_flags;  in imx_pd_bridge_atomic_check()
154 	bridge_state->input_bus_cfg.flags = bus_flags;  in imx_pd_bridge_atomic_check()
155 	imx_crtc_state->bus_flags = bus_flags;  in imx_pd_bridge_atomic_check()
156 	imx_crtc_state->bus_format = bridge_state->input_bus_cfg.format;  in imx_pd_bridge_atomic_check()
157 	imx_crtc_state->di_hsync_pin = 2;  in imx_pd_bridge_atomic_check()
158 	imx_crtc_state->di_vsync_pin = 3;  in imx_pd_bridge_atomic_check()
169 	return drm_bridge_attach(encoder, imxpd->next_bridge, bridge, flags);  in imx_pd_bridge_attach()
197 	encoder = &imxpd_encoder->encoder;  in imx_pd_bind()
198 	bridge = &imxpd->bridge;  in imx_pd_bind()
200 	ret = imx_drm_encoder_parse_of(drm, encoder, imxpd->dev->of_node);  in imx_pd_bind()
221 	struct device *dev = &pdev->dev;  in imx_pd_probe()
222 	struct device_node *np = dev->of_node;  in imx_pd_probe()
226 	const char *fmt;  in imx_pd_probe()  local
234 	imxpd->next_bridge = devm_drm_of_get_bridge(dev, np, 1, 0);  in imx_pd_probe()
235 	if (imxpd->next_bridge == ERR_PTR(-ENODEV))  in imx_pd_probe()
236 		imxpd->next_bridge = devm_imx_drm_legacy_bridge(dev, np, DRM_MODE_CONNECTOR_DPI);  in imx_pd_probe()
237 	if (IS_ERR(imxpd->next_bridge)) {  in imx_pd_probe()
238 		ret = PTR_ERR(imxpd->next_bridge);  in imx_pd_probe()
242 	ret = of_property_read_string(np, "interface-pix-fmt", &fmt);  in imx_pd_probe()
244 		if (!strcmp(fmt, "rgb24"))  in imx_pd_probe()
246 		else if (!strcmp(fmt, "rgb565"))  in imx_pd_probe()
248 		else if (!strcmp(fmt, "bgr666"))  in imx_pd_probe()
250 		else if (!strcmp(fmt, "lvds666"))  in imx_pd_probe()
253 	imxpd->bus_format = bus_format;  in imx_pd_probe()
255 	imxpd->dev = dev;  in imx_pd_probe()
259 	devm_drm_bridge_add(dev, &imxpd->bridge);  in imx_pd_probe()
266 	component_del(&pdev->dev, &imx_pd_ops);  in imx_pd_remove()
270 	{ .compatible = "fsl,imx-parallel-display", },
280 		.name	= "imx-parallel-display",