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// 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,
};
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