Lines Matching refs:lt
50 static int lt8912_write_init_config(struct lt8912 *lt)
87 return regmap_multi_reg_write(lt->regmap[I2C_MAIN], seq, ARRAY_SIZE(seq));
90 static int lt8912_write_mipi_basic_config(struct lt8912 *lt)
100 return regmap_multi_reg_write(lt->regmap[I2C_CEC_DSI], seq, ARRAY_SIZE(seq));
103 static int lt8912_write_dds_config(struct lt8912 *lt)
153 return regmap_multi_reg_write(lt->regmap[I2C_CEC_DSI], seq, ARRAY_SIZE(seq));
156 static int lt8912_write_rxlogicres_config(struct lt8912 *lt)
160 ret = regmap_write(lt->regmap[I2C_MAIN], 0x03, 0x7f);
162 ret |= regmap_write(lt->regmap[I2C_MAIN], 0x03, 0xff);
168 static int lt8912_write_lvds_config(struct lt8912 *lt)
198 return regmap_multi_reg_write(lt->regmap[I2C_MAIN], seq, ARRAY_SIZE(seq));
217 static int lt8912_init_i2c(struct lt8912 *lt, struct i2c_client *client)
229 if (!lt)
234 lt->i2c_client[i] = i2c_new_dummy_device(client->adapter,
236 if (IS_ERR(lt->i2c_client[i]))
237 return PTR_ERR(lt->i2c_client[i]);
240 lt->regmap[i] = devm_regmap_init_i2c(lt->i2c_client[i],
242 if (IS_ERR(lt->regmap[i]))
243 return PTR_ERR(lt->regmap[i]);
248 static int lt8912_free_i2c(struct lt8912 *lt)
253 i2c_unregister_device(lt->i2c_client[i]);
258 static int lt8912_hard_power_on(struct lt8912 *lt)
260 gpiod_set_value_cansleep(lt->gp_reset, 0);
266 static void lt8912_hard_power_off(struct lt8912 *lt)
268 gpiod_set_value_cansleep(lt->gp_reset, 1);
270 lt->is_power_on = false;
273 static int lt8912_video_setup(struct lt8912 *lt)
280 if (!lt)
283 hactive = lt->mode.hactive;
284 hfp = lt->mode.hfront_porch;
285 hpw = lt->mode.hsync_len;
286 hbp = lt->mode.hback_porch;
288 hsync_activehigh = lt->mode.flags & DISPLAY_FLAGS_HSYNC_HIGH;
290 vactive = lt->mode.vactive;
291 vfp = lt->mode.vfront_porch;
292 vpw = lt->mode.vsync_len;
293 vbp = lt->mode.vback_porch;
295 vsync_activehigh = lt->mode.flags & DISPLAY_FLAGS_VSYNC_HIGH;
302 ret = regmap_write(lt->regmap[I2C_CEC_DSI], 0x10, 0x01);
303 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x11, settle);
304 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x18, hpw);
305 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x19, vpw);
306 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x1c, hactive & 0xff);
307 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x1d, hactive >> 8);
309 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x2f, 0x0c);
311 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x34, h_total & 0xff);
312 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x35, h_total >> 8);
314 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x36, v_total & 0xff);
315 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x37, v_total >> 8);
317 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x38, vbp & 0xff);
318 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x39, vbp >> 8);
320 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x3a, vfp & 0xff);
321 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x3b, vfp >> 8);
323 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x3c, hbp & 0xff);
324 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x3d, hbp >> 8);
326 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x3e, hfp & 0xff);
327 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x3f, hfp >> 8);
329 ret |= regmap_update_bits(lt->regmap[I2C_MAIN], 0xab, BIT(0),
331 ret |= regmap_update_bits(lt->regmap[I2C_MAIN], 0xab, BIT(1),
333 ret |= regmap_update_bits(lt->regmap[I2C_MAIN], 0xb2, BIT(0),
334 lt->connector.display_info.is_hdmi ? BIT(0) : 0);
339 static int lt8912_soft_power_on(struct lt8912 *lt)
341 if (!lt->is_power_on) {
342 u32 lanes = lt->data_lanes;
344 lt8912_write_init_config(lt);
345 regmap_write(lt->regmap[I2C_CEC_DSI], 0x13, lanes & 3);
347 lt8912_write_mipi_basic_config(lt);
349 lt->is_power_on = true;
355 static int lt8912_video_on(struct lt8912 *lt)
359 ret = lt8912_video_setup(lt);
363 ret = lt8912_write_dds_config(lt);
367 ret = lt8912_write_rxlogicres_config(lt);
371 ret = lt8912_write_lvds_config(lt);
379 static enum drm_connector_status lt8912_check_cable_status(struct lt8912 *lt)
384 ret = regmap_read(lt->regmap[I2C_MAIN], 0xC1, ®_val);
397 struct lt8912 *lt = connector_to_lt8912(connector);
399 if (lt->hdmi_port->ops & DRM_BRIDGE_OP_DETECT)
400 return drm_bridge_detect(lt->hdmi_port);
402 return lt8912_check_cable_status(lt);
435 struct lt8912 *lt = connector_to_lt8912(connector);
438 edid = drm_bridge_get_edid(lt->hdmi_port, connector);
464 struct lt8912 *lt = bridge_to_lt8912(bridge);
466 drm_display_mode_to_videomode(adj, <->mode);
471 struct lt8912 *lt = bridge_to_lt8912(bridge);
473 lt8912_video_on(lt);
476 static int lt8912_attach_dsi(struct lt8912 *lt)
478 struct device *dev = lt->dev;
487 host = of_find_mipi_dsi_host_by_node(lt->host_node);
500 lt->dsi = dsi;
502 dsi->lanes = lt->data_lanes;
520 struct lt8912 *lt = data;
522 if (lt->bridge.dev)
523 drm_helper_hpd_irq_event(lt->bridge.dev);
529 struct lt8912 *lt = bridge_to_lt8912(bridge);
530 struct drm_connector *connector = <->connector;
532 if (lt->hdmi_port->ops & DRM_BRIDGE_OP_HPD) {
533 drm_bridge_hpd_enable(lt->hdmi_port, lt8912_bridge_hpd_cb, lt);
542 lt->hdmi_port->type);
558 struct lt8912 *lt = bridge_to_lt8912(bridge);
561 ret = drm_bridge_attach(bridge->encoder, lt->hdmi_port, bridge,
564 dev_err(lt->dev, "Failed to attach next bridge (%d)\n", ret);
571 dev_err(lt->dev, "Failed to init bridge ! (%d)\n", ret);
576 ret = lt8912_hard_power_on(lt);
580 ret = lt8912_soft_power_on(lt);
587 lt8912_hard_power_off(lt);
593 struct lt8912 *lt = bridge_to_lt8912(bridge);
595 lt8912_hard_power_off(lt);
597 if (lt->connector.dev && lt->hdmi_port->ops & DRM_BRIDGE_OP_HPD)
598 drm_bridge_hpd_disable(lt->hdmi_port);
604 struct lt8912 *lt = bridge_to_lt8912(bridge);
606 if (lt->hdmi_port->ops & DRM_BRIDGE_OP_DETECT)
607 return drm_bridge_detect(lt->hdmi_port);
609 return lt8912_check_cable_status(lt);
615 struct lt8912 *lt = bridge_to_lt8912(bridge);
621 if (lt->hdmi_port->ops & DRM_BRIDGE_OP_EDID)
622 return drm_bridge_get_edid(lt->hdmi_port, connector);
624 dev_warn(lt->dev, "The connected bridge does not supports DRM_BRIDGE_OP_EDID\n");
637 static int lt8912_parse_dt(struct lt8912 *lt)
640 struct device *dev = lt->dev;
652 lt->gp_reset = gp_reset;
656 dev_err(lt->dev, "%s: Bad data-lanes property\n", __func__);
660 lt->data_lanes = data_lanes;
662 lt->host_node = of_graph_get_remote_node(dev->of_node, 0, -1);
663 if (!lt->host_node) {
664 dev_err(lt->dev, "%s: Failed to get remote port\n", __func__);
670 dev_err(lt->dev, "%s: Failed to get connector port\n", __func__);
675 lt->hdmi_port = of_drm_find_bridge(port_node);
676 if (!lt->hdmi_port) {
678 dev_err_probe(lt->dev, ret, "%s: Failed to get hdmi port\n", __func__);
683 dev_err(lt->dev, "%s: Failed to get hdmi port\n", __func__);
693 of_node_put(lt->host_node);
697 static int lt8912_put_dt(struct lt8912 *lt)
699 of_node_put(lt->host_node);
705 static struct lt8912 *lt;
709 lt = devm_kzalloc(dev, sizeof(struct lt8912), GFP_KERNEL);
710 if (!lt)
713 lt->dev = dev;
714 lt->i2c_client[0] = client;
716 ret = lt8912_parse_dt(lt);
720 ret = lt8912_init_i2c(lt, client);
724 i2c_set_clientdata(client, lt);
726 lt->bridge.funcs = <8912_bridge_funcs;
727 lt->bridge.of_node = dev->of_node;
728 lt->bridge.ops = (DRM_BRIDGE_OP_EDID |
731 drm_bridge_add(<->bridge);
733 ret = lt8912_attach_dsi(lt);
740 drm_bridge_remove(<->bridge);
741 lt8912_free_i2c(lt);
743 lt8912_put_dt(lt);
750 struct lt8912 *lt = i2c_get_clientdata(client);
752 drm_bridge_remove(<->bridge);
753 lt8912_free_i2c(lt);
754 lt8912_put_dt(lt);