Lines Matching +full:lvds +full:- +full:encoder
1 // SPDX-License-Identifier: GPL-2.0
3 * TC358775 DSI to LVDS bridge driver
16 #include <linux/media-bus-format.h>
36 /* DSI D-PHY Layer Registers */
52 #define PPI_STARTPPI 0x0104 /* START control bit of PPI-TX function. */
93 #define DSI_STARTDSI 0x0204 /* START control bit of DSI-TX function */
119 /* Mux Input Select for LVDS LINK Input */
162 #define LVCFG 0x049C /* LVDS Configuration */
163 #define LVPHY0 0x04A0 /* LVDS PHY 0 */
169 #define LVPHY1 0x04A4 /* LVDS PHY 1 */
173 #define SYS_RST_I2CS BIT(0) /* Reset I2C-Slave controller */
174 #define SYS_RST_I2CM BIT(1) /* Reset I2C-Master controller */
177 #define SYS_RST_DSIRX BIT(4) /* Reset DSI-RX and App controller */
204 #define DEBUG01 0x05A4 /* LVDS Data */
279 u8 lvds_link; /* single-link or dual-link */
293 struct device *dev = &tc->dsi->dev; in tc_bridge_pre_enable()
296 ret = regulator_enable(tc->vddio); in tc_bridge_pre_enable()
301 ret = regulator_enable(tc->vdd); in tc_bridge_pre_enable()
306 gpiod_set_value(tc->stby_gpio, 0); in tc_bridge_pre_enable()
309 gpiod_set_value(tc->reset_gpio, 0); in tc_bridge_pre_enable()
316 struct device *dev = &tc->dsi->dev; in tc_bridge_post_disable()
319 gpiod_set_value(tc->reset_gpio, 1); in tc_bridge_post_disable()
322 gpiod_set_value(tc->stby_gpio, 1); in tc_bridge_post_disable()
325 ret = regulator_disable(tc->vdd); in tc_bridge_post_disable()
330 ret = regulator_disable(tc->vddio); in tc_bridge_post_disable()
354 dev_err(&i2c->dev, "Error %d reading from subaddress 0x%x\n", in d2l_read()
368 dev_err(&i2c->dev, "Error %d writing to subaddress 0x%x\n", in d2l_write()
373 static struct drm_connector *get_connector(struct drm_encoder *encoder) in get_connector() argument
375 struct drm_device *dev = encoder->dev; in get_connector()
378 list_for_each_entry(connector, &dev->mode_config.connector_list, head) in get_connector()
379 if (connector->encoder == encoder) in get_connector()
393 struct drm_connector *connector = get_connector(bridge->encoder); in tc_bridge_enable()
395 mode = &bridge->encoder->crtc->state->adjusted_mode; in tc_bridge_enable()
397 hback_porch = mode->htotal - mode->hsync_end; in tc_bridge_enable()
398 hsync_len = mode->hsync_end - mode->hsync_start; in tc_bridge_enable()
399 vback_porch = mode->vtotal - mode->vsync_end; in tc_bridge_enable()
400 vsync_len = mode->vsync_end - mode->vsync_start; in tc_bridge_enable()
405 hfront_porch = mode->hsync_start - mode->hdisplay; in tc_bridge_enable()
406 hactive = mode->hdisplay; in tc_bridge_enable()
407 vfront_porch = mode->vsync_start - mode->vdisplay; in tc_bridge_enable()
408 vactive = mode->vdisplay; in tc_bridge_enable()
413 d2l_read(tc->i2c, IDREG, &val); in tc_bridge_enable()
415 dev_info(tc->dev, "DSI2LVDS Chip ID.%02x Revision ID. %02x **\n", in tc_bridge_enable()
418 d2l_write(tc->i2c, SYSRST, SYS_RST_REG | SYS_RST_DSIRX | SYS_RST_BM | in tc_bridge_enable()
422 d2l_write(tc->i2c, PPI_TX_RX_TA, TTA_GET | TTA_SURE); in tc_bridge_enable()
423 d2l_write(tc->i2c, PPI_LPTXTIMECNT, LPX_PERIOD); in tc_bridge_enable()
424 d2l_write(tc->i2c, PPI_D0S_CLRSIPOCOUNT, 3); in tc_bridge_enable()
425 d2l_write(tc->i2c, PPI_D1S_CLRSIPOCOUNT, 3); in tc_bridge_enable()
426 d2l_write(tc->i2c, PPI_D2S_CLRSIPOCOUNT, 3); in tc_bridge_enable()
427 d2l_write(tc->i2c, PPI_D3S_CLRSIPOCOUNT, 3); in tc_bridge_enable()
429 val = ((L0EN << tc->num_dsi_lanes) - L0EN) | DSI_CLEN_BIT; in tc_bridge_enable()
430 d2l_write(tc->i2c, PPI_LANEENABLE, val); in tc_bridge_enable()
431 d2l_write(tc->i2c, DSI_LANEENABLE, val); in tc_bridge_enable()
433 d2l_write(tc->i2c, PPI_STARTPPI, PPI_START_FUNCTION); in tc_bridge_enable()
434 d2l_write(tc->i2c, DSI_STARTDSI, DSI_RX_START); in tc_bridge_enable()
437 if (tc->type == TC358765) in tc_bridge_enable()
442 if (tc->bpc == 8) in tc_bridge_enable()
447 dsiclk = mode->crtc_clock * 3 * tc->bpc / tc->num_dsi_lanes / 1000; in tc_bridge_enable()
448 clkdiv = dsiclk / (tc->lvds_link == DUAL_LINK ? DIVIDE_BY_6 : DIVIDE_BY_3); in tc_bridge_enable()
450 t1 = hactive * (tc->bpc * 3 / 8) / tc->num_dsi_lanes; in tc_bridge_enable()
452 t3 = ((t2 * byteclk) / 100) - (hactive * (tc->bpc * 3 / 8) / in tc_bridge_enable()
453 tc->num_dsi_lanes); in tc_bridge_enable()
455 vsdelay = (clkdiv * (t1 + t3) / byteclk) - hback_porch - hsync_len - hactive; in tc_bridge_enable()
458 d2l_write(tc->i2c, VPCTRL, val); in tc_bridge_enable()
460 d2l_write(tc->i2c, HTIM1, htime1); in tc_bridge_enable()
461 d2l_write(tc->i2c, VTIM1, vtime1); in tc_bridge_enable()
462 d2l_write(tc->i2c, HTIM2, htime2); in tc_bridge_enable()
463 d2l_write(tc->i2c, VTIM2, vtime2); in tc_bridge_enable()
465 d2l_write(tc->i2c, VFUEN, VFUEN_EN); in tc_bridge_enable()
466 d2l_write(tc->i2c, SYSRST, SYS_RST_LCD); in tc_bridge_enable()
467 d2l_write(tc->i2c, LVPHY0, LV_PHY0_PRBS_ON(4) | LV_PHY0_ND(6)); in tc_bridge_enable()
469 dev_dbg(tc->dev, "bus_formats %04x bpc %d\n", in tc_bridge_enable()
470 connector->display_info.bus_formats[0], in tc_bridge_enable()
471 tc->bpc); in tc_bridge_enable()
472 if (connector->display_info.bus_formats[0] == in tc_bridge_enable()
474 /* VESA-24 */ in tc_bridge_enable()
475 d2l_write(tc->i2c, LV_MX0003, LV_MX(LVI_R0, LVI_R1, LVI_R2, LVI_R3)); in tc_bridge_enable()
476 d2l_write(tc->i2c, LV_MX0407, LV_MX(LVI_R4, LVI_R7, LVI_R5, LVI_G0)); in tc_bridge_enable()
477 d2l_write(tc->i2c, LV_MX0811, LV_MX(LVI_G1, LVI_G2, LVI_G6, LVI_G7)); in tc_bridge_enable()
478 d2l_write(tc->i2c, LV_MX1215, LV_MX(LVI_G3, LVI_G4, LVI_G5, LVI_B0)); in tc_bridge_enable()
479 d2l_write(tc->i2c, LV_MX1619, LV_MX(LVI_B6, LVI_B7, LVI_B1, LVI_B2)); in tc_bridge_enable()
480 d2l_write(tc->i2c, LV_MX2023, LV_MX(LVI_B3, LVI_B4, LVI_B5, LVI_L0)); in tc_bridge_enable()
481 d2l_write(tc->i2c, LV_MX2427, LV_MX(LVI_HS, LVI_VS, LVI_DE, LVI_R6)); in tc_bridge_enable()
483 /* JEIDA-18 and JEIDA-24 */ in tc_bridge_enable()
484 d2l_write(tc->i2c, LV_MX0003, LV_MX(LVI_R2, LVI_R3, LVI_R4, LVI_R5)); in tc_bridge_enable()
485 d2l_write(tc->i2c, LV_MX0407, LV_MX(LVI_R6, LVI_R1, LVI_R7, LVI_G2)); in tc_bridge_enable()
486 d2l_write(tc->i2c, LV_MX0811, LV_MX(LVI_G3, LVI_G4, LVI_G0, LVI_G1)); in tc_bridge_enable()
487 d2l_write(tc->i2c, LV_MX1215, LV_MX(LVI_G5, LVI_G6, LVI_G7, LVI_B2)); in tc_bridge_enable()
488 d2l_write(tc->i2c, LV_MX1619, LV_MX(LVI_B0, LVI_B1, LVI_B3, LVI_B4)); in tc_bridge_enable()
489 d2l_write(tc->i2c, LV_MX2023, LV_MX(LVI_B5, LVI_B6, LVI_B7, LVI_L0)); in tc_bridge_enable()
490 d2l_write(tc->i2c, LV_MX2427, LV_MX(LVI_HS, LVI_VS, LVI_DE, LVI_R0)); in tc_bridge_enable()
493 d2l_write(tc->i2c, VFUEN, VFUEN_EN); in tc_bridge_enable()
496 if (tc->lvds_link == DUAL_LINK) { in tc_bridge_enable()
502 d2l_write(tc->i2c, LVCFG, val); in tc_bridge_enable()
513 * Maximum pixel clock speed 135MHz for single-link in tc_mode_valid()
514 * 270MHz for dual-link in tc_mode_valid()
516 if ((mode->clock > 135000 && tc->lvds_link == SINGLE_LINK) || in tc_mode_valid()
517 (mode->clock > 270000 && tc->lvds_link == DUAL_LINK)) in tc_mode_valid()
520 switch (info->bus_formats[0]) { in tc_mode_valid()
524 tc->bpc = 8; in tc_mode_valid()
528 tc->bpc = 6; in tc_mode_valid()
531 dev_warn(tc->dev, in tc_mode_valid()
532 "unsupported LVDS bus format 0x%04x\n", in tc_mode_valid()
533 info->bus_formats[0]); in tc_mode_valid()
544 int dsi_lanes = -1; in tc358775_parse_dt()
546 endpoint = of_graph_get_endpoint_by_regs(tc->dev->of_node, in tc358775_parse_dt()
547 TC358775_DSI_IN, -1); in tc358775_parse_dt()
551 if (dsi_lanes == -EINVAL || dsi_lanes == -ENODEV) { in tc358775_parse_dt()
556 dev_warn(tc->dev, "no dsi-lanes for the bridge, using host lanes\n"); in tc358775_parse_dt()
564 tc->num_dsi_lanes = dsi_lanes; in tc358775_parse_dt()
566 tc->host_node = of_graph_get_remote_node(np, 0, 0); in tc358775_parse_dt()
567 if (!tc->host_node) in tc358775_parse_dt()
568 return -ENODEV; in tc358775_parse_dt()
570 of_node_put(tc->host_node); in tc358775_parse_dt()
572 tc->lvds_link = SINGLE_LINK; in tc358775_parse_dt()
573 endpoint = of_graph_get_endpoint_by_regs(tc->dev->of_node, in tc358775_parse_dt()
574 TC358775_LVDS_OUT1, -1); in tc358775_parse_dt()
581 tc->lvds_link = DUAL_LINK; in tc358775_parse_dt()
586 dev_dbg(tc->dev, "no.of dsi lanes: %d\n", tc->num_dsi_lanes); in tc358775_parse_dt()
587 dev_dbg(tc->dev, "operating in %d-link mode\n", tc->lvds_link); in tc358775_parse_dt()
597 /* Attach the panel-bridge to the dsi bridge */ in tc_bridge_attach()
598 return drm_bridge_attach(bridge->encoder, tc->panel_bridge, in tc_bridge_attach()
599 &tc->bridge, flags); in tc_bridge_attach()
612 struct device *dev = &tc->i2c->dev; in tc_attach_host()
621 host = of_find_mipi_dsi_host_by_node(tc->host_node); in tc_attach_host()
623 return dev_err_probe(dev, -EPROBE_DEFER, "failed to find dsi host\n"); in tc_attach_host()
631 tc->dsi = dsi; in tc_attach_host()
633 dsi->lanes = tc->num_dsi_lanes; in tc_attach_host()
634 dsi->format = MIPI_DSI_FMT_RGB888; in tc_attach_host()
635 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | in tc_attach_host()
645 if (tc->type == TC358765) in tc_attach_host()
646 dsi->hs_rate = 800000000; in tc_attach_host()
648 dsi->hs_rate = 1000000000; in tc_attach_host()
649 dsi->lp_rate = 10000000; in tc_attach_host()
662 struct device *dev = &client->dev; in tc_probe()
668 return -ENOMEM; in tc_probe()
670 tc->dev = dev; in tc_probe()
671 tc->i2c = client; in tc_probe()
672 tc->type = (enum tc3587x5_type)(unsigned long)of_device_get_match_data(dev); in tc_probe()
674 tc->panel_bridge = devm_drm_of_get_bridge(dev, dev->of_node, in tc_probe()
676 if (IS_ERR(tc->panel_bridge)) in tc_probe()
677 return PTR_ERR(tc->panel_bridge); in tc_probe()
679 ret = tc358775_parse_dt(dev->of_node, tc); in tc_probe()
683 tc->vddio = devm_regulator_get(dev, "vddio-supply"); in tc_probe()
684 if (IS_ERR(tc->vddio)) { in tc_probe()
685 ret = PTR_ERR(tc->vddio); in tc_probe()
686 dev_err(dev, "vddio-supply not found\n"); in tc_probe()
690 tc->vdd = devm_regulator_get(dev, "vdd-supply"); in tc_probe()
691 if (IS_ERR(tc->vdd)) { in tc_probe()
692 ret = PTR_ERR(tc->vdd); in tc_probe()
693 dev_err(dev, "vdd-supply not found\n"); in tc_probe()
697 tc->stby_gpio = devm_gpiod_get_optional(dev, "stby", GPIOD_OUT_HIGH); in tc_probe()
698 if (IS_ERR(tc->stby_gpio)) in tc_probe()
699 return PTR_ERR(tc->stby_gpio); in tc_probe()
701 tc->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); in tc_probe()
702 if (IS_ERR(tc->reset_gpio)) { in tc_probe()
703 ret = PTR_ERR(tc->reset_gpio); in tc_probe()
704 dev_err(dev, "cannot get reset-gpios %d\n", ret); in tc_probe()
708 tc->bridge.funcs = &tc_bridge_funcs; in tc_probe()
709 tc->bridge.of_node = dev->of_node; in tc_probe()
710 tc->bridge.pre_enable_prev_first = true; in tc_probe()
711 drm_bridge_add(&tc->bridge); in tc_probe()
722 drm_bridge_remove(&tc->bridge); in tc_probe()
730 drm_bridge_remove(&tc->bridge); in tc_remove()
759 MODULE_DESCRIPTION("TC358775 DSI/LVDS bridge driver");