// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved. * * lpass-apq8016.c -- ALSA SoC CPU DAI driver for APQ8016 LPASS */ #include #include #include #include #include #include #include #include #include #include #include #include #include "lpass-lpaif-reg.h" #include "lpass.h" static struct snd_soc_dai_driver apq8016_lpass_cpu_dai_driver[] = { [MI2S_PRIMARY] = { .id = MI2S_PRIMARY, .name = "Primary MI2S", .playback = { .stream_name = "Primary Playback", .formats = SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_S32, .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000, .rate_min = 8000, .rate_max = 96000, .channels_min = 1, .channels_max = 8, }, .probe = &asoc_qcom_lpass_cpu_dai_probe, .ops = &asoc_qcom_lpass_cpu_dai_ops, }, [MI2S_SECONDARY] = { .id = MI2S_SECONDARY, .name = "Secondary MI2S", .playback = { .stream_name = "Secondary Playback", .formats = SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_S32, .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000, .rate_min = 8000, .rate_max = 96000, .channels_min = 1, .channels_max = 8, }, .probe = &asoc_qcom_lpass_cpu_dai_probe, .ops = &asoc_qcom_lpass_cpu_dai_ops, }, [MI2S_TERTIARY] = { .id = MI2S_TERTIARY, .name = "Tertiary MI2S", .capture = { .stream_name = "Tertiary Capture", .formats = SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_S32, .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000, .rate_min = 8000, .rate_max = 96000, .channels_min = 1, .channels_max = 8, }, .probe = &asoc_qcom_lpass_cpu_dai_probe, .ops = &asoc_qcom_lpass_cpu_dai_ops, }, [MI2S_QUATERNARY] = { .id = MI2S_QUATERNARY, .name = "Quatenary MI2S", .playback = { .stream_name = "Quatenary Playback", .formats = SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_S32, .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000, .rate_min = 8000, .rate_max = 96000, .channels_min = 1, .channels_max = 8, }, .capture = { .stream_name = "Quatenary Capture", .formats = SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S24 | SNDRV_PCM_FMTBIT_S32, .rates = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000, .rate_min = 8000, .rate_max = 96000, .channels_min = 1, .channels_max = 8, }, .probe = &asoc_qcom_lpass_cpu_dai_probe, .ops = &asoc_qcom_lpass_cpu_dai_ops, }, }; static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata, int direction, unsigned int dai_id) { struct lpass_variant *v = drvdata->variant; int chan = 0; if (direction == SNDRV_PCM_STREAM_PLAYBACK) { chan = find_first_zero_bit(&drvdata->dma_ch_bit_map, v->rdma_channels); if (chan >= v->rdma_channels) return -EBUSY; } else { chan = find_next_zero_bit(&drvdata->dma_ch_bit_map, v->wrdma_channel_start + v->wrdma_channels, v->wrdma_channel_start); if (chan >= v->wrdma_channel_start + v->wrdma_channels) return -EBUSY; } set_bit(chan, &drvdata->dma_ch_bit_map); return chan; } static int apq8016_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id) { clear_bit(chan, &drvdata->dma_ch_bit_map); return 0; } static int apq8016_lpass_init(struct platform_device *pdev) { struct lpass_data *drvdata = platform_get_drvdata(pdev); struct lpass_variant *variant = drvdata->variant; struct device *dev = &pdev->dev; int ret, i; drvdata->clks = devm_kcalloc(dev, variant->num_clks, sizeof(*drvdata->clks), GFP_KERNEL); if (!drvdata->clks) return -ENOMEM; drvdata->num_clks = variant->num_clks; for (i = 0; i < drvdata->num_clks; i++) drvdata->clks[i].id = variant->clk_name[i]; ret = devm_clk_bulk_get(dev, drvdata->num_clks, drvdata->clks); if (ret) { dev_err(dev, "Failed to get clocks %d\n", ret); return ret; } ret = clk_bulk_prepare_enable(drvdata->num_clks, drvdata->clks); if (ret) { dev_err(dev, "apq8016 clk_enable failed\n"); return ret; } drvdata->ahbix_clk = devm_clk_get(dev, "ahbix-clk"); if (IS_ERR(drvdata->ahbix_clk)) { dev_err(dev, "error getting ahbix-clk: %ld\n", PTR_ERR(drvdata->ahbix_clk)); ret = PTR_ERR(drvdata->ahbix_clk); goto err_ahbix_clk; } ret = clk_set_rate(drvdata->ahbix_clk, LPASS_AHBIX_CLOCK_FREQUENCY); if (ret) { dev_err(dev, "error setting rate on ahbix_clk: %d\n", ret); goto err_ahbix_clk; } dev_dbg(dev, "set ahbix_clk rate to %lu\n", clk_get_rate(drvdata->ahbix_clk)); ret = clk_prepare_enable(drvdata->ahbix_clk); if (ret) { dev_err(dev, "error enabling ahbix_clk: %d\n", ret); goto err_ahbix_clk; } return 0; err_ahbix_clk: clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks); return ret; } static int apq8016_lpass_exit(struct platform_device *pdev) { struct lpass_data *drvdata = platform_get_drvdata(pdev); clk_bulk_disable_unprepare(drvdata->num_clks, drvdata->clks); clk_disable_unprepare(drvdata->ahbix_clk); return 0; } static struct lpass_variant apq8016_data = { .i2sctrl_reg_base = 0x1000, .i2sctrl_reg_stride = 0x1000, .i2s_ports = 4, .irq_reg_base = 0x6000, .irq_reg_stride = 0x1000, .irq_ports = 3, .rdma_reg_base = 0x8400, .rdma_reg_stride = 0x1000, .rdma_channels = 2, .dmactl_audif_start = 1, .wrdma_reg_base = 0xB000, .wrdma_reg_stride = 0x1000, .wrdma_channel_start = 5, .wrdma_channels = 2, .loopback = REG_FIELD_ID(0x1000, 15, 15, 4, 0x1000), .spken = REG_FIELD_ID(0x1000, 14, 14, 4, 0x1000), .spkmode = REG_FIELD_ID(0x1000, 10, 13, 4, 0x1000), .spkmono = REG_FIELD_ID(0x1000, 9, 9, 4, 0x1000), .micen = REG_FIELD_ID(0x1000, 8, 8, 4, 0x1000), .micmode = REG_FIELD_ID(0x1000, 4, 7, 4, 0x1000), .micmono = REG_FIELD_ID(0x1000, 3, 3, 4, 0x1000), .wssrc = REG_FIELD_ID(0x1000, 2, 2, 4, 0x1000), .bitwidth = REG_FIELD_ID(0x1000, 0, 1, 4, 0x1000), .rdma_dyncclk = REG_FIELD_ID(0x8400, 12, 12, 2, 0x1000), .rdma_bursten = REG_FIELD_ID(0x8400, 11, 11, 2, 0x1000), .rdma_wpscnt = REG_FIELD_ID(0x8400, 8, 10, 2, 0x1000), .rdma_intf = REG_FIELD_ID(0x8400, 4, 7, 2, 0x1000), .rdma_fifowm = REG_FIELD_ID(0x8400, 1, 3, 2, 0x1000), .rdma_enable = REG_FIELD_ID(0x8400, 0, 0, 2, 0x1000), .wrdma_dyncclk = REG_FIELD_ID(0xB000, 12, 12, 2, 0x1000), .wrdma_bursten = REG_FIELD_ID(0xB000, 11, 11, 2, 0x1000), .wrdma_wpscnt = REG_FIELD_ID(0xB000, 8, 10, 2, 0x1000), .wrdma_intf = REG_FIELD_ID(0xB000, 4, 7, 2, 0x1000), .wrdma_fifowm = REG_FIELD_ID(0xB000, 1, 3, 2, 0x1000), .wrdma_enable = REG_FIELD_ID(0xB000, 0, 0, 2, 0x1000), .clk_name = (const char*[]) { "pcnoc-mport-clk", "pcnoc-sway-clk", }, .num_clks = 2, .dai_driver = apq8016_lpass_cpu_dai_driver, .num_dai = ARRAY_SIZE(apq8016_lpass_cpu_dai_driver), .dai_osr_clk_names = (const char *[]) { "mi2s-osr-clk0", "mi2s-osr-clk1", "mi2s-osr-clk2", "mi2s-osr-clk3", }, .dai_bit_clk_names = (const char *[]) { "mi2s-bit-clk0", "mi2s-bit-clk1", "mi2s-bit-clk2", "mi2s-bit-clk3", }, .init = apq8016_lpass_init, .exit = apq8016_lpass_exit, .alloc_dma_channel = apq8016_lpass_alloc_dma_channel, .free_dma_channel = apq8016_lpass_free_dma_channel, }; static const struct of_device_id apq8016_lpass_cpu_device_id[] = { { .compatible = "qcom,lpass-cpu-apq8016", .data = &apq8016_data }, {} }; MODULE_DEVICE_TABLE(of, apq8016_lpass_cpu_device_id); static struct platform_driver apq8016_lpass_cpu_platform_driver = { .driver = { .name = "apq8016-lpass-cpu", .of_match_table = of_match_ptr(apq8016_lpass_cpu_device_id), }, .probe = asoc_qcom_lpass_cpu_platform_probe, .remove = asoc_qcom_lpass_cpu_platform_remove, }; module_platform_driver(apq8016_lpass_cpu_platform_driver); MODULE_DESCRIPTION("APQ8016 LPASS CPU Driver"); MODULE_LICENSE("GPL v2");