// SPDX-License-Identifier: GPL-2.0 /* * TI j721e Cadence DSI wrapper * * Copyright (C) 2022 Texas Instruments Incorporated - http://www.ti.com/ * Author: Rahul T R <r-ravikumar@ti.com> */ #include <linux/io.h> #include <linux/platform_device.h> #include "cdns-dsi-j721e.h" #define DSI_WRAP_REVISION 0x0 #define DSI_WRAP_DPI_CONTROL 0x4 #define DSI_WRAP_DSC_CONTROL 0x8 #define DSI_WRAP_DPI_SECURE 0xc #define DSI_WRAP_DSI_0_ASF_STATUS 0x10 #define DSI_WRAP_DPI_0_EN BIT(0) #define DSI_WRAP_DSI2_MUX_SEL BIT(4) static int cdns_dsi_j721e_init(struct cdns_dsi *dsi) { struct platform_device *pdev = to_platform_device(dsi->base.dev); dsi->j721e_regs = devm_platform_ioremap_resource(pdev, 1); return PTR_ERR_OR_ZERO(dsi->j721e_regs); } static void cdns_dsi_j721e_enable(struct cdns_dsi *dsi) { /* * Enable DPI0 as its input. DSS0 DPI2 is connected * to DSI DPI0. This is the only supported configuration on * J721E. */ writel(DSI_WRAP_DPI_0_EN, dsi->j721e_regs + DSI_WRAP_DPI_CONTROL); } static void cdns_dsi_j721e_disable(struct cdns_dsi *dsi) { /* Put everything to defaults */ writel(0, dsi->j721e_regs + DSI_WRAP_DPI_CONTROL); } const struct cdns_dsi_platform_ops dsi_ti_j721e_ops = { .init = cdns_dsi_j721e_init, .enable = cdns_dsi_j721e_enable, .disable = cdns_dsi_j721e_disable, };