86 struct fsl_ldb {  struct
97 static bool fsl_ldb_is_dual(const struct fsl_ldb *fsl_ldb)  in fsl_ldb_is_dual()  argument
99 	return (fsl_ldb->ch0_enabled && fsl_ldb->ch1_enabled);  in fsl_ldb_is_dual()
102 static inline struct fsl_ldb *to_fsl_ldb(struct drm_bridge *bridge)  in to_fsl_ldb()
104 	return container_of(bridge, struct fsl_ldb, bridge);  in to_fsl_ldb()
107 static unsigned long fsl_ldb_link_frequency(struct fsl_ldb *fsl_ldb, int clock)  in fsl_ldb_link_frequency()  argument
109 	if (fsl_ldb_is_dual(fsl_ldb))  in fsl_ldb_link_frequency()
118 	struct fsl_ldb *fsl_ldb = to_fsl_ldb(bridge);  in fsl_ldb_attach()  local
120 	return drm_bridge_attach(bridge->encoder, fsl_ldb->panel_bridge,  in fsl_ldb_attach()
127 	struct fsl_ldb *fsl_ldb = to_fsl_ldb(bridge);  in fsl_ldb_atomic_enable()  local
163 		dev_warn(fsl_ldb->dev,  in fsl_ldb_atomic_enable()
179 	requested_link_freq = fsl_ldb_link_frequency(fsl_ldb, mode->clock);  in fsl_ldb_atomic_enable()
180 	clk_set_rate(fsl_ldb->clk, requested_link_freq);  in fsl_ldb_atomic_enable()
182 	configured_link_freq = clk_get_rate(fsl_ldb->clk);  in fsl_ldb_atomic_enable()
184 …dev_warn(fsl_ldb->dev, "Configured LDB clock (%lu Hz) does not match requested LVDS clock: %lu Hz\…  in fsl_ldb_atomic_enable()
188 	clk_prepare_enable(fsl_ldb->clk);  in fsl_ldb_atomic_enable()
191 	reg =	(fsl_ldb->ch0_enabled ? LDB_CTRL_CH0_ENABLE : 0) |  in fsl_ldb_atomic_enable()
192 		(fsl_ldb->ch1_enabled ? LDB_CTRL_CH1_ENABLE : 0) |  in fsl_ldb_atomic_enable()
193 		(fsl_ldb_is_dual(fsl_ldb) ? LDB_CTRL_SPLIT_MODE : 0);  in fsl_ldb_atomic_enable()
196 		reg |=	(fsl_ldb->ch0_enabled ? LDB_CTRL_CH0_DATA_WIDTH : 0) |  in fsl_ldb_atomic_enable()
197 			(fsl_ldb->ch1_enabled ? LDB_CTRL_CH1_DATA_WIDTH : 0);  in fsl_ldb_atomic_enable()
200 		reg |=	(fsl_ldb->ch0_enabled ? LDB_CTRL_CH0_BIT_MAPPING : 0) |  in fsl_ldb_atomic_enable()
201 			(fsl_ldb->ch1_enabled ? LDB_CTRL_CH1_BIT_MAPPING : 0);  in fsl_ldb_atomic_enable()
204 		reg |=	(fsl_ldb->ch0_enabled ? LDB_CTRL_DI0_VSYNC_POLARITY : 0) |  in fsl_ldb_atomic_enable()
205 			(fsl_ldb->ch1_enabled ? LDB_CTRL_DI1_VSYNC_POLARITY : 0);  in fsl_ldb_atomic_enable()
207 	regmap_write(fsl_ldb->regmap, fsl_ldb->devdata->ldb_ctrl, reg);  in fsl_ldb_atomic_enable()
209 	if (fsl_ldb->devdata->single_ctrl_reg)  in fsl_ldb_atomic_enable()
215 	regmap_write(fsl_ldb->regmap, fsl_ldb->devdata->lvds_ctrl, reg);  in fsl_ldb_atomic_enable()
220 	reg |=	(fsl_ldb->ch0_enabled ? LVDS_CTRL_CH0_EN : 0) |  in fsl_ldb_atomic_enable()
221 		(fsl_ldb->ch1_enabled ? LVDS_CTRL_CH1_EN : 0);  in fsl_ldb_atomic_enable()
223 	regmap_write(fsl_ldb->regmap, fsl_ldb->devdata->lvds_ctrl, reg);  in fsl_ldb_atomic_enable()
229 	struct fsl_ldb *fsl_ldb = to_fsl_ldb(bridge);  in fsl_ldb_atomic_disable()  local
232 	if (fsl_ldb->devdata->lvds_en_bit)  in fsl_ldb_atomic_disable()
234 		regmap_write(fsl_ldb->regmap, fsl_ldb->devdata->lvds_ctrl,  in fsl_ldb_atomic_disable()
237 		if (!fsl_ldb->devdata->single_ctrl_reg)  in fsl_ldb_atomic_disable()
238 			regmap_write(fsl_ldb->regmap, fsl_ldb->devdata->lvds_ctrl, 0);  in fsl_ldb_atomic_disable()
239 	regmap_write(fsl_ldb->regmap, fsl_ldb->devdata->ldb_ctrl, 0);  in fsl_ldb_atomic_disable()
241 	clk_disable_unprepare(fsl_ldb->clk);  in fsl_ldb_atomic_disable()
273 	struct fsl_ldb *fsl_ldb = to_fsl_ldb(bridge);  in fsl_ldb_mode_valid()  local
275 	if (mode->clock > (fsl_ldb_is_dual(fsl_ldb) ? 160000 : 80000))  in fsl_ldb_mode_valid()
298 	struct fsl_ldb *fsl_ldb;  in fsl_ldb_probe()  local
301 	fsl_ldb = devm_kzalloc(dev, sizeof(*fsl_ldb), GFP_KERNEL);  in fsl_ldb_probe()
302 	if (!fsl_ldb)  in fsl_ldb_probe()
305 	fsl_ldb->devdata = of_device_get_match_data(dev);  in fsl_ldb_probe()
306 	if (!fsl_ldb->devdata)  in fsl_ldb_probe()
309 	fsl_ldb->dev = &pdev->dev;  in fsl_ldb_probe()
310 	fsl_ldb->bridge.funcs = &funcs;  in fsl_ldb_probe()
311 	fsl_ldb->bridge.of_node = dev->of_node;  in fsl_ldb_probe()
313 	fsl_ldb->clk = devm_clk_get(dev, "ldb");  in fsl_ldb_probe()
314 	if (IS_ERR(fsl_ldb->clk))  in fsl_ldb_probe()
315 		return PTR_ERR(fsl_ldb->clk);  in fsl_ldb_probe()
317 	fsl_ldb->regmap = syscon_node_to_regmap(dev->of_node->parent);  in fsl_ldb_probe()
318 	if (IS_ERR(fsl_ldb->regmap))  in fsl_ldb_probe()
319 		return PTR_ERR(fsl_ldb->regmap);  in fsl_ldb_probe()
324 	fsl_ldb->ch0_enabled = (remote1 != NULL);  in fsl_ldb_probe()
325 	fsl_ldb->ch1_enabled = (remote2 != NULL);  in fsl_ldb_probe()
330 	if (!fsl_ldb->ch0_enabled && !fsl_ldb->ch1_enabled) {  in fsl_ldb_probe()
336 		fsl_ldb_is_dual(fsl_ldb) ? "dual-link mode" :  in fsl_ldb_probe()
337 		fsl_ldb->ch0_enabled ? "channel 0" : "channel 1");  in fsl_ldb_probe()
344 	fsl_ldb->panel_bridge = devm_drm_panel_bridge_add(dev, panel);  in fsl_ldb_probe()
345 	if (IS_ERR(fsl_ldb->panel_bridge))  in fsl_ldb_probe()
346 		return PTR_ERR(fsl_ldb->panel_bridge);  in fsl_ldb_probe()
349 	if (fsl_ldb_is_dual(fsl_ldb)) {  in fsl_ldb_probe()
369 	platform_set_drvdata(pdev, fsl_ldb);  in fsl_ldb_probe()
371 	drm_bridge_add(&fsl_ldb->bridge);  in fsl_ldb_probe()
378 	struct fsl_ldb *fsl_ldb = platform_get_drvdata(pdev);  in fsl_ldb_remove()  local
380 	drm_bridge_remove(&fsl_ldb->bridge);  in fsl_ldb_remove()