diff options
Diffstat (limited to 'sound/soc/qcom/lpass-ipq806x.c')
| -rw-r--r-- | sound/soc/qcom/lpass-ipq806x.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/sound/soc/qcom/lpass-ipq806x.c b/sound/soc/qcom/lpass-ipq806x.c new file mode 100644 index 000000000..ef8a7984f --- /dev/null +++ b/sound/soc/qcom/lpass-ipq806x.c @@ -0,0 +1,181 @@ +// 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, 1, 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"); |