1 // SPDX-License-Identifier: GPL-2.0
27 #define FLD_MASK(start, end)    (((1 << ((start) - (end) + 1)) - 1) << (end))
32 #define PPI_LPTXTIMECNT		0x0114 /* LPTX timing signal */
34 #define PPI_TX_RX_TA		0x013C /* BTA timing parameters */
42 #define DSI_STARTDSI		0x0204 /* START control bit of DSI-TX */
49 #define VP_CTRL_VTGEN(v)	FLD_VAL(v, 4, 4) /* Use chip clock for timing */
56 #define VP_HTIM1		0x0454 /* Horizontal Timing Control 1 */
59 #define VP_HTIM2		0x0458 /* Horizontal Timing Control 2 */
62 #define VP_VTIM1		0x045C /* Vertical Timing Control 1 */
65 #define VP_VTIM2		0x0460 /* Vertical Timing Control 2 */
68 #define VP_VFUEN		0x0464 /* Video Frame Timing Update Enable */
124 #define SYS_RST_I2CS		BIT(0) /* Reset I2C-Slave controller */
125 #define SYS_RST_I2CM		BIT(1) /* Reset I2C-Master controller */
128 #define SYS_RST_DSIRX		BIT(4) /* Reset DSI-RX and App controller */
158 	struct drm_panel *panel;  member
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()
223 	if (ctx->error)  in tc358764_init()
225 	dev_info(ctx->dev, "ID: %#x\n", v);  in tc358764_init()
274 	gpiod_set_value(ctx->gpio_reset, 1);  in tc358764_reset()
276 	gpiod_set_value(ctx->gpio_reset, 0);  in tc358764_reset()
284 	return drm_panel_get_modes(ctx->panel);  in tc358764_get_modes()
303 	int ret = drm_panel_disable(bridge_to_tc358764(bridge)->panel);  in tc358764_disable()
306 		dev_err(ctx->dev, "error disabling panel (%d)\n", ret);  in tc358764_disable()
314 	ret = drm_panel_unprepare(ctx->panel);  in tc358764_post_disable()
316 		dev_err(ctx->dev, "error unpreparing panel (%d)\n", ret);  in tc358764_post_disable()
319 	ret = regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);  in tc358764_post_disable()
321 		dev_err(ctx->dev, "error disabling regulators (%d)\n", ret);  in tc358764_post_disable()
329 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);  in tc358764_pre_enable()
331 		dev_err(ctx->dev, "error enabling regulators (%d)\n", ret);  in tc358764_pre_enable()
336 		dev_err(ctx->dev, "error initializing bridge (%d)\n", ret);  in tc358764_pre_enable()
337 	ret = drm_panel_prepare(ctx->panel);  in tc358764_pre_enable()
339 		dev_err(ctx->dev, "error preparing panel (%d)\n", ret);  in tc358764_pre_enable()
345 	int ret = drm_panel_enable(ctx->panel);  in tc358764_enable()
348 		dev_err(ctx->dev, "error enabling panel (%d)\n", ret);  in tc358764_enable()
354 	struct drm_device *drm = bridge->dev;  in tc358764_attach()
357 	ctx->connector.polled = DRM_CONNECTOR_POLL_HPD;  in tc358764_attach()
358 	ret = drm_connector_init(drm, &ctx->connector,  in tc358764_attach()
366 	drm_connector_helper_add(&ctx->connector,  in tc358764_attach()
368 	drm_connector_attach_encoder(&ctx->connector, bridge->encoder);  in tc358764_attach()
369 	drm_panel_attach(ctx->panel, &ctx->connector);  in tc358764_attach()
370 	ctx->connector.funcs->reset(&ctx->connector);  in tc358764_attach()
371 	drm_fb_helper_add_one_connector(drm->fb_helper, &ctx->connector);  in tc358764_attach()
372 	drm_connector_register(&ctx->connector);  in tc358764_attach()
380 	struct drm_device *drm = bridge->dev;  in tc358764_detach()
382 	drm_connector_unregister(&ctx->connector);  in tc358764_detach()
383 	drm_fb_helper_remove_one_connector(drm->fb_helper, &ctx->connector);  in tc358764_detach()
384 	drm_panel_detach(ctx->panel);  in tc358764_detach()
385 	ctx->panel = NULL;  in tc358764_detach()
386 	drm_connector_put(&ctx->connector);  in tc358764_detach()
400 	struct device *dev = ctx->dev;  in tc358764_parse_dt()
403 	ctx->gpio_reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);  in tc358764_parse_dt()
404 	if (IS_ERR(ctx->gpio_reset)) {  in tc358764_parse_dt()
406 		return PTR_ERR(ctx->gpio_reset);  in tc358764_parse_dt()
409 	ret = drm_of_find_panel_or_bridge(ctx->dev->of_node, 1, 0, &ctx->panel,  in tc358764_parse_dt()
411 	if (ret && ret != -EPROBE_DEFER)  in tc358764_parse_dt()
412 		dev_err(dev, "cannot find panel (%d)\n", ret);  in tc358764_parse_dt()
421 	for (i = 0; i < ARRAY_SIZE(ctx->supplies); ++i)  in tc358764_configure_regulators()
422 		ctx->supplies[i].supply = tc358764_supplies[i];  in tc358764_configure_regulators()
424 	ret = devm_regulator_bulk_get(ctx->dev, ARRAY_SIZE(ctx->supplies),  in tc358764_configure_regulators()
425 				      ctx->supplies);  in tc358764_configure_regulators()
427 		dev_err(ctx->dev, "failed to get regulators: %d\n", ret);  in tc358764_configure_regulators()
434 	struct device *dev = &dsi->dev;  in tc358764_probe()
440 		return -ENOMEM;  in tc358764_probe()
444 	ctx->dev = dev;  in tc358764_probe()
446 	dsi->lanes = 4;  in tc358764_probe()
447 	dsi->format = MIPI_DSI_FMT_RGB888;  in tc358764_probe()
448 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST  in tc358764_probe()
459 	ctx->bridge.funcs = &tc358764_bridge_funcs;  in tc358764_probe()
460 	ctx->bridge.of_node = dev->of_node;  in tc358764_probe()
462 	drm_bridge_add(&ctx->bridge);  in tc358764_probe()
466 		drm_bridge_remove(&ctx->bridge);  in tc358764_probe()
478 	drm_bridge_remove(&ctx->bridge);  in tc358764_remove()
502 MODULE_DESCRIPTION("MIPI-DSI based Driver for TC358764 DSI/LVDS Bridge");