| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved. |
| * |
| * lpass-ipq806x.c -- ALSA SoC CPU DAI driver for QTi LPASS |
| * Splited out the IPQ8064 soc specific from lpass-cpu.c |
| */ |
| |
| #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/soc.h> |
| #include <sound/soc-dai.h> |
| |
| #include "lpass-lpaif-reg.h" |
| #include "lpass.h" |
| |
| enum lpaif_i2s_ports { |
| IPQ806X_LPAIF_I2S_PORT_CODEC_SPK, |
| IPQ806X_LPAIF_I2S_PORT_CODEC_MIC, |
| IPQ806X_LPAIF_I2S_PORT_SEC_SPK, |
| IPQ806X_LPAIF_I2S_PORT_SEC_MIC, |
| IPQ806X_LPAIF_I2S_PORT_MI2S, |
| }; |
| |
| enum lpaif_dma_channels { |
| IPQ806X_LPAIF_RDMA_CHAN_MI2S, |
| IPQ806X_LPAIF_RDMA_CHAN_PCM0, |
| IPQ806X_LPAIF_RDMA_CHAN_PCM1, |
| }; |
| |
| static struct snd_soc_dai_driver ipq806x_lpass_cpu_dai_driver = { |
| .id = IPQ806X_LPAIF_I2S_PORT_MI2S, |
| .playback = { |
| .stream_name = "lpass-cpu-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, |
| }; |
| |
| static int ipq806x_lpass_init(struct platform_device *pdev) |
| { |
| struct lpass_data *drvdata = platform_get_drvdata(pdev); |
| struct device *dev = &pdev->dev; |
| int 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; |
| } |
| |
| err_ahbix_clk: |
| return ret; |
| } |
| |
| static int ipq806x_lpass_exit(struct platform_device *pdev) |
| { |
| struct lpass_data *drvdata = platform_get_drvdata(pdev); |
| |
| clk_disable_unprepare(drvdata->ahbix_clk); |
| |
| return 0; |
| } |
| |
| static int ipq806x_lpass_alloc_dma_channel(struct lpass_data *drvdata, int dir, unsigned int dai_id) |
| { |
| if (dir == SNDRV_PCM_STREAM_PLAYBACK) |
| return IPQ806X_LPAIF_RDMA_CHAN_MI2S; |
| else /* Capture currently not implemented */ |
| return -EINVAL; |
| } |
| |
| static int ipq806x_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id) |
| { |
| return 0; |
| } |
| |
| static struct lpass_variant ipq806x_data = { |
| .i2sctrl_reg_base = 0x0010, |
| .i2sctrl_reg_stride = 0x04, |
| .i2s_ports = 5, |
| .irq_reg_base = 0x3000, |
| .irq_reg_stride = 0x1000, |
| .irq_ports = 3, |
| .rdma_reg_base = 0x6000, |
| .rdma_reg_stride = 0x1000, |
| .rdma_channels = 4, |
| .wrdma_reg_base = 0xB000, |
| .wrdma_reg_stride = 0x1000, |
| .wrdma_channel_start = 5, |
| .wrdma_channels = 4, |
| .loopback = REG_FIELD_ID(0x0010, 15, 15, 5, 0x4), |
| .spken = REG_FIELD_ID(0x0010, 14, 14, 5, 0x4), |
| .spkmode = REG_FIELD_ID(0x0010, 10, 13, 5, 0x4), |
| .spkmono = REG_FIELD_ID(0x0010, 9, 9, 5, 0x4), |
| .micen = REG_FIELD_ID(0x0010, 8, 8, 5, 0x4), |
| .micmode = REG_FIELD_ID(0x0010, 4, 7, 5, 0x4), |
| .micmono = REG_FIELD_ID(0x0010, 3, 3, 5, 0x4), |
| .wssrc = REG_FIELD_ID(0x0010, 2, 2, 5, 0x4), |
| .bitwidth = REG_FIELD_ID(0x0010, 0, 0, 5, 0x4), |
| |
| .rdma_dyncclk = REG_FIELD_ID(0x6000, 12, 12, 4, 0x1000), |
| .rdma_bursten = REG_FIELD_ID(0x6000, 11, 11, 4, 0x1000), |
| .rdma_wpscnt = REG_FIELD_ID(0x6000, 8, 10, 4, 0x1000), |
| .rdma_intf = REG_FIELD_ID(0x6000, 4, 7, 4, 0x1000), |
| .rdma_fifowm = REG_FIELD_ID(0x6000, 1, 3, 4, 0x1000), |
| .rdma_enable = REG_FIELD_ID(0x6000, 0, 0, 4, 0x1000), |
| |
| .wrdma_dyncclk = REG_FIELD_ID(0xB000, 12, 12, 4, 0x1000), |
| .wrdma_bursten = REG_FIELD_ID(0xB000, 11, 11, 4, 0x1000), |
| .wrdma_wpscnt = REG_FIELD_ID(0xB000, 8, 10, 4, 0x1000), |
| .wrdma_intf = REG_FIELD_ID(0xB000, 4, 7, 4, 0x1000), |
| .wrdma_fifowm = REG_FIELD_ID(0xB000, 1, 3, 4, 0x1000), |
| .wrdma_enable = REG_FIELD_ID(0xB000, 0, 0, 4, 0x1000), |
| |
| .dai_driver = &ipq806x_lpass_cpu_dai_driver, |
| .num_dai = 1, |
| .dai_osr_clk_names = (const char *[]) { |
| "mi2s-osr-clk", |
| }, |
| .dai_bit_clk_names = (const char *[]) { |
| "mi2s-bit-clk", |
| }, |
| .init = ipq806x_lpass_init, |
| .exit = ipq806x_lpass_exit, |
| .alloc_dma_channel = ipq806x_lpass_alloc_dma_channel, |
| .free_dma_channel = ipq806x_lpass_free_dma_channel, |
| }; |
| |
| static const struct of_device_id ipq806x_lpass_cpu_device_id[] __maybe_unused = { |
| { .compatible = "qcom,lpass-cpu", .data = &ipq806x_data }, |
| {} |
| }; |
| MODULE_DEVICE_TABLE(of, ipq806x_lpass_cpu_device_id); |
| |
| static struct platform_driver ipq806x_lpass_cpu_platform_driver = { |
| .driver = { |
| .name = "lpass-cpu", |
| .of_match_table = of_match_ptr(ipq806x_lpass_cpu_device_id), |
| }, |
| .probe = asoc_qcom_lpass_cpu_platform_probe, |
| .remove = asoc_qcom_lpass_cpu_platform_remove, |
| }; |
| module_platform_driver(ipq806x_lpass_cpu_platform_driver); |
| |
| MODULE_DESCRIPTION("QTi LPASS CPU Driver"); |
| MODULE_LICENSE("GPL v2"); |