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1// SPDX-License-Identifier: GPL-2.02/*3 * TI j721e Cadence MHDP8546 DP wrapper4 *5 * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/6 * Author: Jyri Sarha <jsarha@ti.com>7 */8 9#include <linux/io.h>10#include <linux/platform_device.h>11 12#include "cdns-mhdp8546-j721e.h"13 14#define REVISION 0x0015#define DPTX_IPCFG 0x0416#define ECC_MEM_CFG 0x0817#define DPTX_DSC_CFG 0x0c18#define DPTX_SRC_CFG 0x1019#define DPTX_VIF_SECURE_MODE_CFG 0x1420#define DPTX_VIF_CONN_STATUS 0x1821#define PHY_CLK_STATUS 0x1c22 23#define DPTX_SRC_AIF_EN BIT(16)24#define DPTX_SRC_VIF_3_IN30B BIT(11)25#define DPTX_SRC_VIF_2_IN30B BIT(10)26#define DPTX_SRC_VIF_1_IN30B BIT(9)27#define DPTX_SRC_VIF_0_IN30B BIT(8)28#define DPTX_SRC_VIF_3_SEL_DPI5 BIT(7)29#define DPTX_SRC_VIF_3_SEL_DPI3 030#define DPTX_SRC_VIF_2_SEL_DPI4 BIT(6)31#define DPTX_SRC_VIF_2_SEL_DPI2 032#define DPTX_SRC_VIF_1_SEL_DPI3 BIT(5)33#define DPTX_SRC_VIF_1_SEL_DPI1 034#define DPTX_SRC_VIF_0_SEL_DPI2 BIT(4)35#define DPTX_SRC_VIF_0_SEL_DPI0 036#define DPTX_SRC_VIF_3_EN BIT(3)37#define DPTX_SRC_VIF_2_EN BIT(2)38#define DPTX_SRC_VIF_1_EN BIT(1)39#define DPTX_SRC_VIF_0_EN BIT(0)40 41/* TODO turn DPTX_IPCFG fw_mem_clk_en at pm_runtime_suspend. */42 43static int cdns_mhdp_j721e_init(struct cdns_mhdp_device *mhdp)44{45 struct platform_device *pdev = to_platform_device(mhdp->dev);46 47 mhdp->j721e_regs = devm_platform_ioremap_resource(pdev, 1);48 return PTR_ERR_OR_ZERO(mhdp->j721e_regs);49}50 51static void cdns_mhdp_j721e_enable(struct cdns_mhdp_device *mhdp)52{53 /*54 * Enable VIF_0 and select DPI2 as its input. DSS0 DPI0 is connected55 * to eDP DPI2. This is the only supported SST configuration on56 * J721E.57 */58 writel(DPTX_SRC_VIF_0_EN | DPTX_SRC_VIF_0_SEL_DPI2,59 mhdp->j721e_regs + DPTX_SRC_CFG);60}61 62static void cdns_mhdp_j721e_disable(struct cdns_mhdp_device *mhdp)63{64 /* Put everything to defaults */65 writel(0, mhdp->j721e_regs + DPTX_DSC_CFG);66}67 68const struct mhdp_platform_ops mhdp_ti_j721e_ops = {69 .init = cdns_mhdp_j721e_init,70 .enable = cdns_mhdp_j721e_enable,71 .disable = cdns_mhdp_j721e_disable,72};73 74const u3275mhdp_ti_j721e_bridge_input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE |76 DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE |77 DRM_BUS_FLAG_DE_HIGH;78