Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * DaVinci Voice Codec Core Interface for TI platforms
 *
 * Copyright (C) 2010 Texas Instruments, Inc
 *
 * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
 */
 
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/regmap.h>
 
#include <sound/pcm.h>
 
#include <linux/mfd/davinci_voicecodec.h>
 
static const struct regmap_config davinci_vc_regmap = {
<------>.reg_bits = 32,
<------>.val_bits = 32,
};
 
static int __init davinci_vc_probe(struct platform_device *pdev)
{
<------>struct davinci_vc *davinci_vc;
<------>struct resource *res;
<------>struct mfd_cell *cell = NULL;
<------>dma_addr_t fifo_base;
<------>int ret;
 
<------>davinci_vc = devm_kzalloc(&pdev->dev,
<------><------><------><------>  sizeof(struct davinci_vc), GFP_KERNEL);
<------>if (!davinci_vc)
<------><------>return -ENOMEM;
 
<------>davinci_vc->clk = devm_clk_get(&pdev->dev, NULL);
<------>if (IS_ERR(davinci_vc->clk)) {
<------><------>dev_dbg(&pdev->dev,
<------><------><------>    "could not get the clock for voice codec\n");
<------><------>return -ENODEV;
<------>}
<------>clk_enable(davinci_vc->clk);
 
<------>res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
<------>fifo_base = (dma_addr_t)res->start;
<------>davinci_vc->base = devm_ioremap_resource(&pdev->dev, res);
<------>if (IS_ERR(davinci_vc->base)) {
<------><------>ret = PTR_ERR(davinci_vc->base);
<------><------>goto fail;
<------>}
 
<------>davinci_vc->regmap = devm_regmap_init_mmio(&pdev->dev,
<------><------><------><------><------><------>   davinci_vc->base,
<------><------><------><------><------><------>   &davinci_vc_regmap);
<------>if (IS_ERR(davinci_vc->regmap)) {
<------><------>ret = PTR_ERR(davinci_vc->regmap);
<------><------>goto fail;
<------>}
 
<------>res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
<------>if (!res) {
<------><------>dev_err(&pdev->dev, "no DMA resource\n");
<------><------>ret = -ENXIO;
<------><------>goto fail;
<------>}
 
<------>davinci_vc->davinci_vcif.dma_tx_channel = res->start;
<------>davinci_vc->davinci_vcif.dma_tx_addr = fifo_base + DAVINCI_VC_WFIFO;
 
<------>res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
<------>if (!res) {
<------><------>dev_err(&pdev->dev, "no DMA resource\n");
<------><------>ret = -ENXIO;
<------><------>goto fail;
<------>}
 
<------>davinci_vc->davinci_vcif.dma_rx_channel = res->start;
<------>davinci_vc->davinci_vcif.dma_rx_addr = fifo_base + DAVINCI_VC_RFIFO;
 
<------>davinci_vc->dev = &pdev->dev;
<------>davinci_vc->pdev = pdev;
 
<------>/* Voice codec interface client */
<------>cell = &davinci_vc->cells[DAVINCI_VC_VCIF_CELL];
<------>cell->name = "davinci-vcif";
<------>cell->platform_data = davinci_vc;
<------>cell->pdata_size = sizeof(*davinci_vc);
 
<------>/* Voice codec CQ93VC client */
<------>cell = &davinci_vc->cells[DAVINCI_VC_CQ93VC_CELL];
<------>cell->name = "cq93vc-codec";
<------>cell->platform_data = davinci_vc;
<------>cell->pdata_size = sizeof(*davinci_vc);
 
<------>ret = mfd_add_devices(&pdev->dev, pdev->id, davinci_vc->cells,
<------><------><------>      DAVINCI_VC_CELLS, NULL, 0, NULL);
<------>if (ret != 0) {
<------><------>dev_err(&pdev->dev, "fail to register client devices\n");
<------><------>goto fail;
<------>}
 
<------>return 0;
 
fail:
<------>clk_disable(davinci_vc->clk);
 
<------>return ret;
}
 
static int davinci_vc_remove(struct platform_device *pdev)
{
<------>struct davinci_vc *davinci_vc = platform_get_drvdata(pdev);
 
<------>mfd_remove_devices(&pdev->dev);
 
<------>clk_disable(davinci_vc->clk);
 
<------>return 0;
}
 
static struct platform_driver davinci_vc_driver = {
<------>.driver	= {
<------><------>.name = "davinci_voicecodec",
<------>},
<------>.remove	= davinci_vc_remove,
};
 
module_platform_driver_probe(davinci_vc_driver, davinci_vc_probe);
 
MODULE_AUTHOR("Miguel Aguilar");
MODULE_DESCRIPTION("Texas Instruments DaVinci Voice Codec Core Interface");
MODULE_LICENSE("GPL");