1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+ 235ac89ddSJacob Chen /* 335ac89ddSJacob Chen * Copyright 2016 Rockchip Inc. 435ac89ddSJacob Chen */ 535ac89ddSJacob Chen 635ac89ddSJacob Chen #include <common.h> 735ac89ddSJacob Chen #include <display.h> 835ac89ddSJacob Chen #include <dm.h> 935ac89ddSJacob Chen #include <edid.h> 1035ac89ddSJacob Chen #include <panel.h> 1135ac89ddSJacob Chen #include <regmap.h> 1235ac89ddSJacob Chen #include <syscon.h> 1335ac89ddSJacob Chen #include <asm/gpio.h> 1435ac89ddSJacob Chen #include <asm/io.h> 1535ac89ddSJacob Chen #include <asm/arch/clock.h> 1635ac89ddSJacob Chen #include <asm/arch/lvds_rk3288.h> 1735ac89ddSJacob Chen #include <asm/arch/grf_rk3288.h> 1835ac89ddSJacob Chen #include <dt-bindings/clock/rk3288-cru.h> 1935ac89ddSJacob Chen #include <dt-bindings/video/rk3288.h> 2035ac89ddSJacob Chen 2135ac89ddSJacob Chen DECLARE_GLOBAL_DATA_PTR; 2235ac89ddSJacob Chen 2335ac89ddSJacob Chen /** 2435ac89ddSJacob Chen * struct rk_lvds_priv - private rockchip lvds display driver info 2535ac89ddSJacob Chen * 2635ac89ddSJacob Chen * @reg: LVDS register address 2735ac89ddSJacob Chen * @grf: GRF register 2835ac89ddSJacob Chen * @panel: Panel device that is used in driver 2935ac89ddSJacob Chen * 3035ac89ddSJacob Chen * @output: Output mode, decided single or double channel, 3135ac89ddSJacob Chen * LVDS or LVTLL 3235ac89ddSJacob Chen * @format: Data format that RGB data will packing as 3335ac89ddSJacob Chen */ 3435ac89ddSJacob Chen struct rk_lvds_priv { 3535ac89ddSJacob Chen void __iomem *regs; 3635ac89ddSJacob Chen struct rk3288_grf *grf; 3735ac89ddSJacob Chen struct udevice *panel; 3835ac89ddSJacob Chen 3935ac89ddSJacob Chen int output; 4035ac89ddSJacob Chen int format; 4135ac89ddSJacob Chen }; 4235ac89ddSJacob Chen 4335ac89ddSJacob Chen static inline void lvds_writel(struct rk_lvds_priv *lvds, u32 offset, u32 val) 4435ac89ddSJacob Chen { 4535ac89ddSJacob Chen writel(val, lvds->regs + offset); 4635ac89ddSJacob Chen 4735ac89ddSJacob Chen writel(val, lvds->regs + offset + 0x100); 4835ac89ddSJacob Chen } 4935ac89ddSJacob Chen 5035ac89ddSJacob Chen int rk_lvds_enable(struct udevice *dev, int panel_bpp, 5135ac89ddSJacob Chen const struct display_timing *edid) 5235ac89ddSJacob Chen { 5335ac89ddSJacob Chen struct rk_lvds_priv *priv = dev_get_priv(dev); 5435ac89ddSJacob Chen struct display_plat *uc_plat = dev_get_uclass_platdata(dev); 5535ac89ddSJacob Chen int ret = 0; 5635ac89ddSJacob Chen unsigned int val = 0; 5735ac89ddSJacob Chen 5835ac89ddSJacob Chen ret = panel_enable_backlight(priv->panel); 5935ac89ddSJacob Chen if (ret) { 6035ac89ddSJacob Chen debug("%s: backlight error: %d\n", __func__, ret); 6135ac89ddSJacob Chen return ret; 6235ac89ddSJacob Chen } 6335ac89ddSJacob Chen 6435ac89ddSJacob Chen /* Select the video source */ 6535ac89ddSJacob Chen if (uc_plat->source_id) 6635ac89ddSJacob Chen val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT | 6735ac89ddSJacob Chen (RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16); 6835ac89ddSJacob Chen else 6935ac89ddSJacob Chen val = RK3288_LVDS_SOC_CON6_SEL_VOP_LIT << 16; 7035ac89ddSJacob Chen rk_setreg(&priv->grf->soc_con6, val); 7135ac89ddSJacob Chen 7235ac89ddSJacob Chen /* Select data transfer format */ 7335ac89ddSJacob Chen val = priv->format; 7435ac89ddSJacob Chen if (priv->output == LVDS_OUTPUT_DUAL) 7535ac89ddSJacob Chen val |= LVDS_DUAL | LVDS_CH0_EN | LVDS_CH1_EN; 7635ac89ddSJacob Chen else if (priv->output == LVDS_OUTPUT_SINGLE) 7735ac89ddSJacob Chen val |= LVDS_CH0_EN; 7835ac89ddSJacob Chen else if (priv->output == LVDS_OUTPUT_RGB) 7935ac89ddSJacob Chen val |= LVDS_TTL_EN | LVDS_CH0_EN | LVDS_CH1_EN; 8035ac89ddSJacob Chen val |= (0xffff << 16); 8135ac89ddSJacob Chen rk_setreg(&priv->grf->soc_con7, val); 8235ac89ddSJacob Chen 8335ac89ddSJacob Chen /* Enable LVDS PHY */ 8435ac89ddSJacob Chen if (priv->output == LVDS_OUTPUT_RGB) { 8535ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG0, 8635ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_TTL_EN | 8735ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LANECK_EN | 8835ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LANE4_EN | 8935ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LANE3_EN | 9035ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LANE2_EN | 9135ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LANE1_EN | 9235ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LANE0_EN); 9335ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG2, 9435ac89ddSJacob Chen RK3288_LVDS_PLL_FBDIV_REG2(0x46)); 9535ac89ddSJacob Chen 9635ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG3, 9735ac89ddSJacob Chen RK3288_LVDS_PLL_FBDIV_REG3(0x46)); 9835ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG4, 9935ac89ddSJacob Chen RK3288_LVDS_CH0_REG4_LANECK_TTL_MODE | 10035ac89ddSJacob Chen RK3288_LVDS_CH0_REG4_LANE4_TTL_MODE | 10135ac89ddSJacob Chen RK3288_LVDS_CH0_REG4_LANE3_TTL_MODE | 10235ac89ddSJacob Chen RK3288_LVDS_CH0_REG4_LANE2_TTL_MODE | 10335ac89ddSJacob Chen RK3288_LVDS_CH0_REG4_LANE1_TTL_MODE | 10435ac89ddSJacob Chen RK3288_LVDS_CH0_REG4_LANE0_TTL_MODE); 10535ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG5, 10635ac89ddSJacob Chen RK3288_LVDS_CH0_REG5_LANECK_TTL_DATA | 10735ac89ddSJacob Chen RK3288_LVDS_CH0_REG5_LANE4_TTL_DATA | 10835ac89ddSJacob Chen RK3288_LVDS_CH0_REG5_LANE3_TTL_DATA | 10935ac89ddSJacob Chen RK3288_LVDS_CH0_REG5_LANE2_TTL_DATA | 11035ac89ddSJacob Chen RK3288_LVDS_CH0_REG5_LANE1_TTL_DATA | 11135ac89ddSJacob Chen RK3288_LVDS_CH0_REG5_LANE0_TTL_DATA); 11235ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REGD, 11335ac89ddSJacob Chen RK3288_LVDS_PLL_PREDIV_REGD(0x0a)); 11435ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG20, 11535ac89ddSJacob Chen RK3288_LVDS_CH0_REG20_LSB); 11635ac89ddSJacob Chen } else { 11735ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG0, 11835ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LVDS_EN | 11935ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LANECK_EN | 12035ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LANE4_EN | 12135ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LANE3_EN | 12235ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LANE2_EN | 12335ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LANE1_EN | 12435ac89ddSJacob Chen RK3288_LVDS_CH0_REG0_LANE0_EN); 12535ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG1, 12635ac89ddSJacob Chen RK3288_LVDS_CH0_REG1_LANECK_BIAS | 12735ac89ddSJacob Chen RK3288_LVDS_CH0_REG1_LANE4_BIAS | 12835ac89ddSJacob Chen RK3288_LVDS_CH0_REG1_LANE3_BIAS | 12935ac89ddSJacob Chen RK3288_LVDS_CH0_REG1_LANE2_BIAS | 13035ac89ddSJacob Chen RK3288_LVDS_CH0_REG1_LANE1_BIAS | 13135ac89ddSJacob Chen RK3288_LVDS_CH0_REG1_LANE0_BIAS); 13235ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG2, 13335ac89ddSJacob Chen RK3288_LVDS_CH0_REG2_RESERVE_ON | 13435ac89ddSJacob Chen RK3288_LVDS_CH0_REG2_LANECK_LVDS_MODE | 13535ac89ddSJacob Chen RK3288_LVDS_CH0_REG2_LANE4_LVDS_MODE | 13635ac89ddSJacob Chen RK3288_LVDS_CH0_REG2_LANE3_LVDS_MODE | 13735ac89ddSJacob Chen RK3288_LVDS_CH0_REG2_LANE2_LVDS_MODE | 13835ac89ddSJacob Chen RK3288_LVDS_CH0_REG2_LANE1_LVDS_MODE | 13935ac89ddSJacob Chen RK3288_LVDS_CH0_REG2_LANE0_LVDS_MODE | 14035ac89ddSJacob Chen RK3288_LVDS_PLL_FBDIV_REG2(0x46)); 14135ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG3, 14235ac89ddSJacob Chen RK3288_LVDS_PLL_FBDIV_REG3(0x46)); 14335ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG4, 0x00); 14435ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG5, 0x00); 14535ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REGD, 14635ac89ddSJacob Chen RK3288_LVDS_PLL_PREDIV_REGD(0x0a)); 14735ac89ddSJacob Chen lvds_writel(priv, RK3288_LVDS_CH0_REG20, 14835ac89ddSJacob Chen RK3288_LVDS_CH0_REG20_LSB); 14935ac89ddSJacob Chen } 15035ac89ddSJacob Chen 15135ac89ddSJacob Chen /* Power on */ 15235ac89ddSJacob Chen writel(RK3288_LVDS_CFG_REGC_PLL_ENABLE, 15335ac89ddSJacob Chen priv->regs + RK3288_LVDS_CFG_REGC); 15435ac89ddSJacob Chen 15535ac89ddSJacob Chen writel(RK3288_LVDS_CFG_REG21_TX_ENABLE, 15635ac89ddSJacob Chen priv->regs + RK3288_LVDS_CFG_REG21); 15735ac89ddSJacob Chen 15835ac89ddSJacob Chen return 0; 15935ac89ddSJacob Chen } 16035ac89ddSJacob Chen 16135ac89ddSJacob Chen int rk_lvds_read_timing(struct udevice *dev, struct display_timing *timing) 16235ac89ddSJacob Chen { 16335ac89ddSJacob Chen if (fdtdec_decode_display_timing 164e160f7d4SSimon Glass (gd->fdt_blob, dev_of_offset(dev), 0, timing)) { 16535ac89ddSJacob Chen debug("%s: Failed to decode display timing\n", __func__); 16635ac89ddSJacob Chen return -EINVAL; 16735ac89ddSJacob Chen } 16835ac89ddSJacob Chen 16935ac89ddSJacob Chen return 0; 17035ac89ddSJacob Chen } 17135ac89ddSJacob Chen 17235ac89ddSJacob Chen static int rk_lvds_ofdata_to_platdata(struct udevice *dev) 17335ac89ddSJacob Chen { 17435ac89ddSJacob Chen struct rk_lvds_priv *priv = dev_get_priv(dev); 17535ac89ddSJacob Chen const void *blob = gd->fdt_blob; 176e160f7d4SSimon Glass int node = dev_of_offset(dev); 17735ac89ddSJacob Chen int ret; 178a821c4afSSimon Glass priv->regs = (void *)devfdt_get_addr(dev); 17935ac89ddSJacob Chen priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); 18035ac89ddSJacob Chen 18135ac89ddSJacob Chen ret = fdtdec_get_int(blob, node, "rockchip,output", -1); 18235ac89ddSJacob Chen if (ret != -1) { 18335ac89ddSJacob Chen priv->output = ret; 18435ac89ddSJacob Chen debug("LVDS output : %d\n", ret); 18535ac89ddSJacob Chen } else { 18635ac89ddSJacob Chen /* default set it as output rgb */ 18735ac89ddSJacob Chen priv->output = LVDS_OUTPUT_RGB; 18835ac89ddSJacob Chen } 18935ac89ddSJacob Chen 19035ac89ddSJacob Chen ret = fdtdec_get_int(blob, node, "rockchip,data-mapping", -1); 19135ac89ddSJacob Chen if (ret != -1) { 19235ac89ddSJacob Chen priv->format = ret; 19335ac89ddSJacob Chen debug("LVDS data-mapping : %d\n", ret); 19435ac89ddSJacob Chen } else { 19535ac89ddSJacob Chen /* default set it as format jeida */ 19635ac89ddSJacob Chen priv->format = LVDS_FORMAT_JEIDA; 19735ac89ddSJacob Chen } 19835ac89ddSJacob Chen 19935ac89ddSJacob Chen ret = fdtdec_get_int(blob, node, "rockchip,data-width", -1); 20035ac89ddSJacob Chen if (ret != -1) { 20135ac89ddSJacob Chen debug("LVDS data-width : %d\n", ret); 20235ac89ddSJacob Chen if (ret == 24) { 20335ac89ddSJacob Chen priv->format |= LVDS_24BIT; 20435ac89ddSJacob Chen } else if (ret == 18) { 20535ac89ddSJacob Chen priv->format |= LVDS_18BIT; 20635ac89ddSJacob Chen } else { 20735ac89ddSJacob Chen debug("rockchip-lvds unsupport data-width[%d]\n", ret); 20835ac89ddSJacob Chen ret = -EINVAL; 20935ac89ddSJacob Chen return ret; 21035ac89ddSJacob Chen } 21135ac89ddSJacob Chen } else { 21235ac89ddSJacob Chen priv->format |= LVDS_24BIT; 21335ac89ddSJacob Chen } 21435ac89ddSJacob Chen 21535ac89ddSJacob Chen return 0; 21635ac89ddSJacob Chen } 21735ac89ddSJacob Chen 21835ac89ddSJacob Chen int rk_lvds_probe(struct udevice *dev) 21935ac89ddSJacob Chen { 22035ac89ddSJacob Chen struct rk_lvds_priv *priv = dev_get_priv(dev); 22135ac89ddSJacob Chen int ret; 22235ac89ddSJacob Chen 22335ac89ddSJacob Chen ret = uclass_get_device_by_phandle(UCLASS_PANEL, dev, "rockchip,panel", 22435ac89ddSJacob Chen &priv->panel); 22535ac89ddSJacob Chen if (ret) { 22635ac89ddSJacob Chen debug("%s: Cannot find panel for '%s' (ret=%d)\n", __func__, 22735ac89ddSJacob Chen dev->name, ret); 22835ac89ddSJacob Chen return ret; 22935ac89ddSJacob Chen } 23035ac89ddSJacob Chen 23135ac89ddSJacob Chen return 0; 23235ac89ddSJacob Chen } 23335ac89ddSJacob Chen 23435ac89ddSJacob Chen static const struct dm_display_ops lvds_rockchip_ops = { 23535ac89ddSJacob Chen .read_timing = rk_lvds_read_timing, 23635ac89ddSJacob Chen .enable = rk_lvds_enable, 23735ac89ddSJacob Chen }; 23835ac89ddSJacob Chen 23935ac89ddSJacob Chen static const struct udevice_id rockchip_lvds_ids[] = { 24035ac89ddSJacob Chen {.compatible = "rockchip,rk3288-lvds"}, 24135ac89ddSJacob Chen {} 24235ac89ddSJacob Chen }; 24335ac89ddSJacob Chen 24435ac89ddSJacob Chen U_BOOT_DRIVER(lvds_rockchip) = { 24535ac89ddSJacob Chen .name = "lvds_rockchip", 24635ac89ddSJacob Chen .id = UCLASS_DISPLAY, 24735ac89ddSJacob Chen .of_match = rockchip_lvds_ids, 24835ac89ddSJacob Chen .ops = &lvds_rockchip_ops, 24935ac89ddSJacob Chen .ofdata_to_platdata = rk_lvds_ofdata_to_platdata, 25035ac89ddSJacob Chen .probe = rk_lvds_probe, 25135ac89ddSJacob Chen .priv_auto_alloc_size = sizeof(struct rk_lvds_priv), 25235ac89ddSJacob Chen }; 253