1 // SPDX-License-Identifier: GPL-2.0
38 /* DSI layer registers */
39 #define DSI_STARTDSI		0x0204 /* START control bit of DSI-TX */
56 /* Lane enable PPI and DSI register bits */
73 	int ret = ctx->error;  in tc358762_clear_error()
75 	ctx->error = 0;  in tc358762_clear_error()
81 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in tc358762_write()  local
85 	if (ctx->error)  in tc358762_write()
95 	ret = mipi_dsi_generic_write(dsi, data, sizeof(data));  in tc358762_write()
97 		ctx->error = ret;  in tc358762_write()
137 	if (!ctx->pre_enabled)  in tc358762_post_disable()
140 	ctx->pre_enabled = false;  in tc358762_post_disable()
142 	ret = regulator_disable(ctx->regulator);  in tc358762_post_disable()
144 		dev_err(ctx->dev, "error disabling regulators (%d)\n", ret);  in tc358762_post_disable()
152 	ret = regulator_enable(ctx->regulator);  in tc358762_pre_enable()
154 		dev_err(ctx->dev, "error enabling regulators (%d)\n", ret);  in tc358762_pre_enable()
158 		dev_err(ctx->dev, "error initializing bridge (%d)\n", ret);  in tc358762_pre_enable()
160 	ctx->pre_enabled = true;  in tc358762_pre_enable()
168 	return drm_bridge_attach(bridge->encoder, ctx->panel_bridge,  in tc358762_attach()
181 	struct device *dev = ctx->dev;  in tc358762_parse_dt()
185 	ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL);  in tc358762_parse_dt()
194 	ctx->panel_bridge = panel_bridge;  in tc358762_parse_dt()
201 	ctx->regulator = devm_regulator_get(ctx->dev, "vddc");  in tc358762_configure_regulators()
202 	if (IS_ERR(ctx->regulator))  in tc358762_configure_regulators()
203 		return PTR_ERR(ctx->regulator);  in tc358762_configure_regulators()
208 static int tc358762_probe(struct mipi_dsi_device *dsi)  in tc358762_probe()  argument
210 	struct device *dev = &dsi->dev;  in tc358762_probe()
216 		return -ENOMEM;  in tc358762_probe()
218 	mipi_dsi_set_drvdata(dsi, ctx);  in tc358762_probe()
220 	ctx->dev = dev;  in tc358762_probe()
221 	ctx->pre_enabled = false;  in tc358762_probe()
223 	/* TODO: Find out how to get dual-lane mode working */  in tc358762_probe()
224 	dsi->lanes = 1;  in tc358762_probe()
225 	dsi->format = MIPI_DSI_FMT_RGB888;  in tc358762_probe()
226 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |  in tc358762_probe()
237 	ctx->bridge.funcs = &tc358762_bridge_funcs;  in tc358762_probe()
238 	ctx->bridge.type = DRM_MODE_CONNECTOR_DPI;  in tc358762_probe()
239 	ctx->bridge.of_node = dev->of_node;  in tc358762_probe()
241 	drm_bridge_add(&ctx->bridge);  in tc358762_probe()
243 	ret = mipi_dsi_attach(dsi);  in tc358762_probe()
245 		drm_bridge_remove(&ctx->bridge);  in tc358762_probe()
246 		dev_err(dev, "failed to attach dsi\n");  in tc358762_probe()
252 static int tc358762_remove(struct mipi_dsi_device *dsi)  in tc358762_remove()  argument
254 	struct tc358762 *ctx = mipi_dsi_get_drvdata(dsi);  in tc358762_remove()
256 	mipi_dsi_detach(dsi);  in tc358762_remove()
257 	drm_bridge_remove(&ctx->bridge);  in tc358762_remove()
279 MODULE_DESCRIPTION("MIPI-DSI based Driver for TC358762 DSI/DPI Bridge");