| // 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 <linux/clk.h> |
| #include <linux/device.h> |
| #include <linux/err.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/platform_device.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dai.h> |
| |
| #include <dt-bindings/sound/apq8016-lpass.h> |
| #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, |
| }, |
| .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, |
| }, |
| .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, |
| }, |
| .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, |
| }, |
| .ops = &asoc_qcom_lpass_cpu_dai_ops, |
| }, |
| }; |
| |
| static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata, |
| int direction, unsigned int dai_id) |
| { |
| const 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); |
| const 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 const 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[] __maybe_unused = { |
| { .compatible = "qcom,lpass-cpu-apq8016", .data = &apq8016_data }, |
| { .compatible = "qcom,apq8016-lpass-cpu", .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_new = asoc_qcom_lpass_cpu_platform_remove, |
| }; |
| module_platform_driver(apq8016_lpass_cpu_platform_driver); |
| |
| MODULE_DESCRIPTION("APQ8016 LPASS CPU Driver"); |
| MODULE_LICENSE("GPL v2"); |
| |
