^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * DaVinci Voice Codec Core Interface for TI platforms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2010 Texas Instruments, Inc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/regmap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <sound/pcm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/mfd/davinci_voicecodec.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static const struct regmap_config davinci_vc_regmap = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) .reg_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) .val_bits = 32,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static int __init davinci_vc_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) struct davinci_vc *davinci_vc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct mfd_cell *cell = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) dma_addr_t fifo_base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) davinci_vc = devm_kzalloc(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) sizeof(struct davinci_vc), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) if (!davinci_vc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) davinci_vc->clk = devm_clk_get(&pdev->dev, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (IS_ERR(davinci_vc->clk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) dev_dbg(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) "could not get the clock for voice codec\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) clk_enable(davinci_vc->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) fifo_base = (dma_addr_t)res->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) davinci_vc->base = devm_ioremap_resource(&pdev->dev, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) if (IS_ERR(davinci_vc->base)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) ret = PTR_ERR(davinci_vc->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) davinci_vc->regmap = devm_regmap_init_mmio(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) davinci_vc->base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) &davinci_vc_regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (IS_ERR(davinci_vc->regmap)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) ret = PTR_ERR(davinci_vc->regmap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (!res) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) dev_err(&pdev->dev, "no DMA resource\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) ret = -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) davinci_vc->davinci_vcif.dma_tx_channel = res->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) davinci_vc->davinci_vcif.dma_tx_addr = fifo_base + DAVINCI_VC_WFIFO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if (!res) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) dev_err(&pdev->dev, "no DMA resource\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) ret = -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) davinci_vc->davinci_vcif.dma_rx_channel = res->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) davinci_vc->davinci_vcif.dma_rx_addr = fifo_base + DAVINCI_VC_RFIFO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) davinci_vc->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) davinci_vc->pdev = pdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) /* Voice codec interface client */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) cell = &davinci_vc->cells[DAVINCI_VC_VCIF_CELL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) cell->name = "davinci-vcif";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) cell->platform_data = davinci_vc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) cell->pdata_size = sizeof(*davinci_vc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /* Voice codec CQ93VC client */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) cell = &davinci_vc->cells[DAVINCI_VC_CQ93VC_CELL];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) cell->name = "cq93vc-codec";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) cell->platform_data = davinci_vc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) cell->pdata_size = sizeof(*davinci_vc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) ret = mfd_add_devices(&pdev->dev, pdev->id, davinci_vc->cells,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) DAVINCI_VC_CELLS, NULL, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (ret != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) dev_err(&pdev->dev, "fail to register client devices\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) clk_disable(davinci_vc->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) static int davinci_vc_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct davinci_vc *davinci_vc = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) mfd_remove_devices(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) clk_disable(davinci_vc->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) static struct platform_driver davinci_vc_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) .name = "davinci_voicecodec",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) .remove = davinci_vc_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) module_platform_driver_probe(davinci_vc_driver, davinci_vc_probe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) MODULE_AUTHOR("Miguel Aguilar");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) MODULE_DESCRIPTION("Texas Instruments DaVinci Voice Codec Core Interface");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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