From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/mfd/davinci_voicecodec.c | 136 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 136 insertions(+) create mode 100644 drivers/mfd/davinci_voicecodec.c (limited to 'drivers/mfd/davinci_voicecodec.c') diff --git a/drivers/mfd/davinci_voicecodec.c b/drivers/mfd/davinci_voicecodec.c new file mode 100644 index 000000000..965820481 --- /dev/null +++ b/drivers/mfd/davinci_voicecodec.c @@ -0,0 +1,136 @@ +// 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 + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include + +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); + + davinci_vc->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); + if (IS_ERR(davinci_vc->base)) { + ret = PTR_ERR(davinci_vc->base); + goto fail; + } + fifo_base = (dma_addr_t)res->start; + + 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"); -- cgit v1.2.3