Lines Matching defs:lt
52 static int lt8912_write_init_config(struct lt8912 *lt)
89 return regmap_multi_reg_write(lt->regmap[I2C_MAIN], seq, ARRAY_SIZE(seq));
92 static int lt8912_write_mipi_basic_config(struct lt8912 *lt)
102 return regmap_multi_reg_write(lt->regmap[I2C_CEC_DSI], seq, ARRAY_SIZE(seq));
105 static int lt8912_write_dds_config(struct lt8912 *lt)
155 return regmap_multi_reg_write(lt->regmap[I2C_CEC_DSI], seq, ARRAY_SIZE(seq));
158 static int lt8912_write_rxlogicres_config(struct lt8912 *lt)
162 ret = regmap_write(lt->regmap[I2C_MAIN], 0x03, 0x7f);
164 ret |= regmap_write(lt->regmap[I2C_MAIN], 0x03, 0xff);
170 static int lt8912_write_lvds_config(struct lt8912 *lt)
200 return regmap_multi_reg_write(lt->regmap[I2C_MAIN], seq, ARRAY_SIZE(seq));
219 static int lt8912_init_i2c(struct lt8912 *lt, struct i2c_client *client)
231 if (!lt)
236 lt->i2c_client[i] = i2c_new_dummy_device(client->adapter,
238 if (IS_ERR(lt->i2c_client[i]))
239 return PTR_ERR(lt->i2c_client[i]);
242 lt->regmap[i] = devm_regmap_init_i2c(lt->i2c_client[i],
244 if (IS_ERR(lt->regmap[i]))
245 return PTR_ERR(lt->regmap[i]);
250 static int lt8912_free_i2c(struct lt8912 *lt)
255 i2c_unregister_device(lt->i2c_client[i]);
260 static int lt8912_hard_power_on(struct lt8912 *lt)
264 ret = regulator_bulk_enable(ARRAY_SIZE(lt->supplies), lt->supplies);
268 gpiod_set_value_cansleep(lt->gp_reset, 0);
274 static void lt8912_hard_power_off(struct lt8912 *lt)
276 gpiod_set_value_cansleep(lt->gp_reset, 1);
279 regulator_bulk_disable(ARRAY_SIZE(lt->supplies), lt->supplies);
281 lt->is_power_on = false;
284 static int lt8912_video_setup(struct lt8912 *lt)
291 if (!lt)
294 hactive = lt->mode.hactive;
295 hfp = lt->mode.hfront_porch;
296 hpw = lt->mode.hsync_len;
297 hbp = lt->mode.hback_porch;
299 hsync_activehigh = lt->mode.flags & DISPLAY_FLAGS_HSYNC_HIGH;
301 vactive = lt->mode.vactive;
302 vfp = lt->mode.vfront_porch;
303 vpw = lt->mode.vsync_len;
304 vbp = lt->mode.vback_porch;
306 vsync_activehigh = lt->mode.flags & DISPLAY_FLAGS_VSYNC_HIGH;
313 ret = regmap_write(lt->regmap[I2C_CEC_DSI], 0x10, 0x01);
314 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x11, settle);
315 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x18, hpw);
316 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x19, vpw);
317 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x1c, hactive & 0xff);
318 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x1d, hactive >> 8);
320 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x2f, 0x0c);
322 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x34, h_total & 0xff);
323 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x35, h_total >> 8);
325 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x36, v_total & 0xff);
326 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x37, v_total >> 8);
328 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x38, vbp & 0xff);
329 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x39, vbp >> 8);
331 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x3a, vfp & 0xff);
332 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x3b, vfp >> 8);
334 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x3c, hbp & 0xff);
335 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x3d, hbp >> 8);
337 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x3e, hfp & 0xff);
338 ret |= regmap_write(lt->regmap[I2C_CEC_DSI], 0x3f, hfp >> 8);
340 ret |= regmap_update_bits(lt->regmap[I2C_MAIN], 0xab, BIT(0),
342 ret |= regmap_update_bits(lt->regmap[I2C_MAIN], 0xab, BIT(1),
344 ret |= regmap_update_bits(lt->regmap[I2C_MAIN], 0xb2, BIT(0),
345 lt->connector.display_info.is_hdmi ? BIT(0) : 0);
350 static int lt8912_soft_power_on(struct lt8912 *lt)
352 if (!lt->is_power_on) {
353 u32 lanes = lt->data_lanes;
355 lt8912_write_init_config(lt);
356 regmap_write(lt->regmap[I2C_CEC_DSI], 0x13, lanes & 3);
358 lt8912_write_mipi_basic_config(lt);
360 lt->is_power_on = true;
366 static int lt8912_video_on(struct lt8912 *lt)
370 ret = lt8912_video_setup(lt);
374 ret = lt8912_write_dds_config(lt);
378 ret = lt8912_write_rxlogicres_config(lt);
382 ret = lt8912_write_lvds_config(lt);
390 static enum drm_connector_status lt8912_check_cable_status(struct lt8912 *lt)
395 ret = regmap_read(lt->regmap[I2C_MAIN], 0xC1, ®_val);
408 struct lt8912 *lt = connector_to_lt8912(connector);
410 if (lt->hdmi_port->ops & DRM_BRIDGE_OP_DETECT)
411 return drm_bridge_detect(lt->hdmi_port);
413 return lt8912_check_cable_status(lt);
444 struct lt8912 *lt = connector_to_lt8912(connector);
448 drm_edid = drm_bridge_edid_read(lt->hdmi_port, connector);
473 struct lt8912 *lt = bridge_to_lt8912(bridge);
475 drm_display_mode_to_videomode(adj, <->mode);
480 struct lt8912 *lt = bridge_to_lt8912(bridge);
482 lt8912_video_on(lt);
485 static int lt8912_attach_dsi(struct lt8912 *lt)
487 struct device *dev = lt->dev;
496 host = of_find_mipi_dsi_host_by_node(lt->host_node);
509 lt->dsi = dsi;
511 dsi->lanes = lt->data_lanes;
529 struct lt8912 *lt = data;
531 if (lt->bridge.dev)
532 drm_helper_hpd_irq_event(lt->bridge.dev);
538 struct lt8912 *lt = bridge_to_lt8912(bridge);
539 struct drm_connector *connector = <->connector;
541 if (lt->hdmi_port->ops & DRM_BRIDGE_OP_HPD) {
542 drm_bridge_hpd_enable(lt->hdmi_port, lt8912_bridge_hpd_cb, lt);
551 lt->hdmi_port->type);
567 struct lt8912 *lt = bridge_to_lt8912(bridge);
570 ret = drm_bridge_attach(bridge->encoder, lt->hdmi_port, bridge,
573 dev_err(lt->dev, "Failed to attach next bridge (%d)\n", ret);
580 dev_err(lt->dev, "Failed to init bridge ! (%d)\n", ret);
585 ret = lt8912_hard_power_on(lt);
589 ret = lt8912_soft_power_on(lt);
596 lt8912_hard_power_off(lt);
602 struct lt8912 *lt = bridge_to_lt8912(bridge);
604 lt8912_hard_power_off(lt);
606 if (lt->connector.dev && lt->hdmi_port->ops & DRM_BRIDGE_OP_HPD)
607 drm_bridge_hpd_disable(lt->hdmi_port);
613 struct lt8912 *lt = bridge_to_lt8912(bridge);
615 if (lt->hdmi_port->ops & DRM_BRIDGE_OP_DETECT)
616 return drm_bridge_detect(lt->hdmi_port);
618 return lt8912_check_cable_status(lt);
624 struct lt8912 *lt = bridge_to_lt8912(bridge);
630 if (lt->hdmi_port->ops & DRM_BRIDGE_OP_EDID)
631 return drm_bridge_edid_read(lt->hdmi_port, connector);
633 dev_warn(lt->dev, "The connected bridge does not supports DRM_BRIDGE_OP_EDID\n");
648 struct lt8912 *lt = dev_get_drvdata(dev);
651 ret = lt8912_hard_power_on(lt);
655 ret = lt8912_soft_power_on(lt);
659 return lt8912_video_on(lt);
664 struct lt8912 *lt = dev_get_drvdata(dev);
666 lt8912_hard_power_off(lt);
673 static int lt8912_get_regulators(struct lt8912 *lt)
681 for (i = 0; i < ARRAY_SIZE(lt->supplies); i++)
682 lt->supplies[i].supply = supply_names[i];
684 return devm_regulator_bulk_get(lt->dev, ARRAY_SIZE(lt->supplies),
685 lt->supplies);
688 static int lt8912_parse_dt(struct lt8912 *lt)
691 struct device *dev = lt->dev;
703 lt->gp_reset = gp_reset;
707 dev_err(lt->dev, "%s: Bad data-lanes property\n", __func__);
711 lt->data_lanes = data_lanes;
713 lt->host_node = of_graph_get_remote_node(dev->of_node, 0, -1);
714 if (!lt->host_node) {
715 dev_err(lt->dev, "%s: Failed to get remote port\n", __func__);
721 dev_err(lt->dev, "%s: Failed to get connector port\n", __func__);
726 lt->hdmi_port = of_drm_find_bridge(port_node);
727 if (!lt->hdmi_port) {
729 dev_err_probe(lt->dev, ret, "%s: Failed to get hdmi port\n", __func__);
734 dev_err(lt->dev, "%s: Failed to get hdmi port\n", __func__);
739 ret = lt8912_get_regulators(lt);
748 of_node_put(lt->host_node);
752 static int lt8912_put_dt(struct lt8912 *lt)
754 of_node_put(lt->host_node);
760 static struct lt8912 *lt;
764 lt = devm_kzalloc(dev, sizeof(struct lt8912), GFP_KERNEL);
765 if (!lt)
768 lt->dev = dev;
769 lt->i2c_client[0] = client;
771 ret = lt8912_parse_dt(lt);
775 ret = lt8912_init_i2c(lt, client);
779 i2c_set_clientdata(client, lt);
781 lt->bridge.funcs = <8912_bridge_funcs;
782 lt->bridge.of_node = dev->of_node;
783 lt->bridge.ops = (DRM_BRIDGE_OP_EDID |
786 drm_bridge_add(<->bridge);
788 ret = lt8912_attach_dsi(lt);
795 drm_bridge_remove(<->bridge);
796 lt8912_free_i2c(lt);
798 lt8912_put_dt(lt);
805 struct lt8912 *lt = i2c_get_clientdata(client);
807 drm_bridge_remove(<->bridge);
808 lt8912_free_i2c(lt);
809 lt8912_put_dt(lt);