18c2ecf20Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-or-later 28c2ecf20Sopenharmony_ci/* 38c2ecf20Sopenharmony_ci * DaVinci Voice Codec Core Interface for TI platforms 48c2ecf20Sopenharmony_ci * 58c2ecf20Sopenharmony_ci * Copyright (C) 2010 Texas Instruments, Inc 68c2ecf20Sopenharmony_ci * 78c2ecf20Sopenharmony_ci * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com> 88c2ecf20Sopenharmony_ci */ 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ci#include <linux/init.h> 118c2ecf20Sopenharmony_ci#include <linux/module.h> 128c2ecf20Sopenharmony_ci#include <linux/device.h> 138c2ecf20Sopenharmony_ci#include <linux/slab.h> 148c2ecf20Sopenharmony_ci#include <linux/delay.h> 158c2ecf20Sopenharmony_ci#include <linux/io.h> 168c2ecf20Sopenharmony_ci#include <linux/clk.h> 178c2ecf20Sopenharmony_ci#include <linux/regmap.h> 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_ci#include <sound/pcm.h> 208c2ecf20Sopenharmony_ci 218c2ecf20Sopenharmony_ci#include <linux/mfd/davinci_voicecodec.h> 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_cistatic const struct regmap_config davinci_vc_regmap = { 248c2ecf20Sopenharmony_ci .reg_bits = 32, 258c2ecf20Sopenharmony_ci .val_bits = 32, 268c2ecf20Sopenharmony_ci}; 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_cistatic int __init davinci_vc_probe(struct platform_device *pdev) 298c2ecf20Sopenharmony_ci{ 308c2ecf20Sopenharmony_ci struct davinci_vc *davinci_vc; 318c2ecf20Sopenharmony_ci struct resource *res; 328c2ecf20Sopenharmony_ci struct mfd_cell *cell = NULL; 338c2ecf20Sopenharmony_ci dma_addr_t fifo_base; 348c2ecf20Sopenharmony_ci int ret; 358c2ecf20Sopenharmony_ci 368c2ecf20Sopenharmony_ci davinci_vc = devm_kzalloc(&pdev->dev, 378c2ecf20Sopenharmony_ci sizeof(struct davinci_vc), GFP_KERNEL); 388c2ecf20Sopenharmony_ci if (!davinci_vc) 398c2ecf20Sopenharmony_ci return -ENOMEM; 408c2ecf20Sopenharmony_ci 418c2ecf20Sopenharmony_ci davinci_vc->clk = devm_clk_get(&pdev->dev, NULL); 428c2ecf20Sopenharmony_ci if (IS_ERR(davinci_vc->clk)) { 438c2ecf20Sopenharmony_ci dev_dbg(&pdev->dev, 448c2ecf20Sopenharmony_ci "could not get the clock for voice codec\n"); 458c2ecf20Sopenharmony_ci return -ENODEV; 468c2ecf20Sopenharmony_ci } 478c2ecf20Sopenharmony_ci clk_enable(davinci_vc->clk); 488c2ecf20Sopenharmony_ci 498c2ecf20Sopenharmony_ci davinci_vc->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); 508c2ecf20Sopenharmony_ci if (IS_ERR(davinci_vc->base)) { 518c2ecf20Sopenharmony_ci ret = PTR_ERR(davinci_vc->base); 528c2ecf20Sopenharmony_ci goto fail; 538c2ecf20Sopenharmony_ci } 548c2ecf20Sopenharmony_ci fifo_base = (dma_addr_t)res->start; 558c2ecf20Sopenharmony_ci 568c2ecf20Sopenharmony_ci davinci_vc->regmap = devm_regmap_init_mmio(&pdev->dev, 578c2ecf20Sopenharmony_ci davinci_vc->base, 588c2ecf20Sopenharmony_ci &davinci_vc_regmap); 598c2ecf20Sopenharmony_ci if (IS_ERR(davinci_vc->regmap)) { 608c2ecf20Sopenharmony_ci ret = PTR_ERR(davinci_vc->regmap); 618c2ecf20Sopenharmony_ci goto fail; 628c2ecf20Sopenharmony_ci } 638c2ecf20Sopenharmony_ci 648c2ecf20Sopenharmony_ci res = platform_get_resource(pdev, IORESOURCE_DMA, 0); 658c2ecf20Sopenharmony_ci if (!res) { 668c2ecf20Sopenharmony_ci dev_err(&pdev->dev, "no DMA resource\n"); 678c2ecf20Sopenharmony_ci ret = -ENXIO; 688c2ecf20Sopenharmony_ci goto fail; 698c2ecf20Sopenharmony_ci } 708c2ecf20Sopenharmony_ci 718c2ecf20Sopenharmony_ci davinci_vc->davinci_vcif.dma_tx_channel = res->start; 728c2ecf20Sopenharmony_ci davinci_vc->davinci_vcif.dma_tx_addr = fifo_base + DAVINCI_VC_WFIFO; 738c2ecf20Sopenharmony_ci 748c2ecf20Sopenharmony_ci res = platform_get_resource(pdev, IORESOURCE_DMA, 1); 758c2ecf20Sopenharmony_ci if (!res) { 768c2ecf20Sopenharmony_ci dev_err(&pdev->dev, "no DMA resource\n"); 778c2ecf20Sopenharmony_ci ret = -ENXIO; 788c2ecf20Sopenharmony_ci goto fail; 798c2ecf20Sopenharmony_ci } 808c2ecf20Sopenharmony_ci 818c2ecf20Sopenharmony_ci davinci_vc->davinci_vcif.dma_rx_channel = res->start; 828c2ecf20Sopenharmony_ci davinci_vc->davinci_vcif.dma_rx_addr = fifo_base + DAVINCI_VC_RFIFO; 838c2ecf20Sopenharmony_ci 848c2ecf20Sopenharmony_ci davinci_vc->dev = &pdev->dev; 858c2ecf20Sopenharmony_ci davinci_vc->pdev = pdev; 868c2ecf20Sopenharmony_ci 878c2ecf20Sopenharmony_ci /* Voice codec interface client */ 888c2ecf20Sopenharmony_ci cell = &davinci_vc->cells[DAVINCI_VC_VCIF_CELL]; 898c2ecf20Sopenharmony_ci cell->name = "davinci-vcif"; 908c2ecf20Sopenharmony_ci cell->platform_data = davinci_vc; 918c2ecf20Sopenharmony_ci cell->pdata_size = sizeof(*davinci_vc); 928c2ecf20Sopenharmony_ci 938c2ecf20Sopenharmony_ci /* Voice codec CQ93VC client */ 948c2ecf20Sopenharmony_ci cell = &davinci_vc->cells[DAVINCI_VC_CQ93VC_CELL]; 958c2ecf20Sopenharmony_ci cell->name = "cq93vc-codec"; 968c2ecf20Sopenharmony_ci cell->platform_data = davinci_vc; 978c2ecf20Sopenharmony_ci cell->pdata_size = sizeof(*davinci_vc); 988c2ecf20Sopenharmony_ci 998c2ecf20Sopenharmony_ci ret = mfd_add_devices(&pdev->dev, pdev->id, davinci_vc->cells, 1008c2ecf20Sopenharmony_ci DAVINCI_VC_CELLS, NULL, 0, NULL); 1018c2ecf20Sopenharmony_ci if (ret != 0) { 1028c2ecf20Sopenharmony_ci dev_err(&pdev->dev, "fail to register client devices\n"); 1038c2ecf20Sopenharmony_ci goto fail; 1048c2ecf20Sopenharmony_ci } 1058c2ecf20Sopenharmony_ci 1068c2ecf20Sopenharmony_ci return 0; 1078c2ecf20Sopenharmony_ci 1088c2ecf20Sopenharmony_cifail: 1098c2ecf20Sopenharmony_ci clk_disable(davinci_vc->clk); 1108c2ecf20Sopenharmony_ci 1118c2ecf20Sopenharmony_ci return ret; 1128c2ecf20Sopenharmony_ci} 1138c2ecf20Sopenharmony_ci 1148c2ecf20Sopenharmony_cistatic int davinci_vc_remove(struct platform_device *pdev) 1158c2ecf20Sopenharmony_ci{ 1168c2ecf20Sopenharmony_ci struct davinci_vc *davinci_vc = platform_get_drvdata(pdev); 1178c2ecf20Sopenharmony_ci 1188c2ecf20Sopenharmony_ci mfd_remove_devices(&pdev->dev); 1198c2ecf20Sopenharmony_ci 1208c2ecf20Sopenharmony_ci clk_disable(davinci_vc->clk); 1218c2ecf20Sopenharmony_ci 1228c2ecf20Sopenharmony_ci return 0; 1238c2ecf20Sopenharmony_ci} 1248c2ecf20Sopenharmony_ci 1258c2ecf20Sopenharmony_cistatic struct platform_driver davinci_vc_driver = { 1268c2ecf20Sopenharmony_ci .driver = { 1278c2ecf20Sopenharmony_ci .name = "davinci_voicecodec", 1288c2ecf20Sopenharmony_ci }, 1298c2ecf20Sopenharmony_ci .remove = davinci_vc_remove, 1308c2ecf20Sopenharmony_ci}; 1318c2ecf20Sopenharmony_ci 1328c2ecf20Sopenharmony_cimodule_platform_driver_probe(davinci_vc_driver, davinci_vc_probe); 1338c2ecf20Sopenharmony_ci 1348c2ecf20Sopenharmony_ciMODULE_AUTHOR("Miguel Aguilar"); 1358c2ecf20Sopenharmony_ciMODULE_DESCRIPTION("Texas Instruments DaVinci Voice Codec Core Interface"); 1368c2ecf20Sopenharmony_ciMODULE_LICENSE("GPL"); 137