1 // SPDX-License-Identifier: GPL-2.0
28 #define FLD_MASK(start, end)    (((1 << ((start) - (end) + 1)) - 1) << (end))
43 #define DSI_STARTDSI		0x0204 /* START control bit of DSI-TX */
125 #define SYS_RST_I2CS		BIT(0) /* Reset I2C-Slave controller */
126 #define SYS_RST_I2CM		BIT(1) /* Reset I2C-Master controller */
129 #define SYS_RST_DSIRX		BIT(4) /* Reset DSI-RX and App controller */
150 	"vddc", "vddio", "vddlvds"
164 	int ret = ctx->error;  in tc358764_clear_error()
166 	ctx->error = 0;  in tc358764_clear_error()
172 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in tc358764_read()
175 	if (ctx->error)  in tc358764_read()
183 	dev_dbg(ctx->dev, "read: %d, addr: %d\n", addr, *val);  in tc358764_read()
188 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in tc358764_write()
192 	if (ctx->error)  in tc358764_write()
204 		ctx->error = ret;  in tc358764_write()
217 	if (ctx->error)  in tc358764_init()
219 	dev_info(ctx->dev, "ID: %#x\n", v);  in tc358764_init()
268 	gpiod_set_value(ctx->gpio_reset, 1);  in tc358764_reset()
270 	gpiod_set_value(ctx->gpio_reset, 0);  in tc358764_reset()
281 	ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);  in tc358764_post_disable()
283 		dev_err(ctx->dev, "error disabling regulators (%d)\n", ret);  in tc358764_post_disable()
291 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);  in tc358764_pre_enable()
293 		dev_err(ctx->dev, "error enabling regulators (%d)\n", ret);  in tc358764_pre_enable()
298 		dev_err(ctx->dev, "error initializing bridge (%d)\n", ret);  in tc358764_pre_enable()
306 	return drm_bridge_attach(bridge->encoder, ctx->panel_bridge,  in tc358764_attach()
319 	struct device *dev = ctx->dev;  in tc358764_parse_dt()
323 	ctx->gpio_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);  in tc358764_parse_dt()
324 	if (IS_ERR(ctx->gpio_reset)) {  in tc358764_parse_dt()
326 		return PTR_ERR(ctx->gpio_reset);  in tc358764_parse_dt()
329 	ret = drm_of_find_panel_or_bridge(dev->of_node, 1, 0, &panel, NULL);  in tc358764_parse_dt()
337 	ctx->panel_bridge = panel_bridge;  in tc358764_parse_dt()
345 	for (i = 0; i < ARRAY_SIZE(ctx->supplies); ++i)  in tc358764_configure_regulators()
346 		ctx->supplies[i].supply = tc358764_supplies[i];  in tc358764_configure_regulators()
348 	ret = devm_regulator_bulk_get(ctx->dev, ARRAY_SIZE(ctx->supplies),  in tc358764_configure_regulators()
349 				      ctx->supplies);  in tc358764_configure_regulators()
351 		dev_err(ctx->dev, "failed to get regulators: %d\n", ret);  in tc358764_configure_regulators()
358 	struct device *dev = &dsi->dev;  in tc358764_probe()
364 		return -ENOMEM;  in tc358764_probe()
368 	ctx->dev = dev;  in tc358764_probe()
370 	dsi->lanes = 4;  in tc358764_probe()
371 	dsi->format = MIPI_DSI_FMT_RGB888;  in tc358764_probe()
372 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST  in tc358764_probe()
383 	ctx->bridge.funcs = &tc358764_bridge_funcs;  in tc358764_probe()
384 	ctx->bridge.type = DRM_MODE_CONNECTOR_LVDS;  in tc358764_probe()
385 	ctx->bridge.of_node = dev->of_node;  in tc358764_probe()
387 	drm_bridge_add(&ctx->bridge);  in tc358764_probe()
391 		drm_bridge_remove(&ctx->bridge);  in tc358764_probe()
403 	drm_bridge_remove(&ctx->bridge);  in tc358764_remove()
427 MODULE_DESCRIPTION("MIPI-DSI based Driver for TC358764 DSI/LVDS Bridge");