| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 2 | /* |
| 3 | * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved. |
| 4 | * |
| 5 | * lpass-ipq806x.c -- ALSA SoC CPU DAI driver for QTi LPASS |
| 6 | * Splited out the IPQ8064 soc specific from lpass-cpu.c |
| 7 | */ |
| 8 | |
| 9 | #include <linux/clk.h> |
| 10 | #include <linux/device.h> |
| 11 | #include <linux/err.h> |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/of.h> |
| 15 | #include <linux/platform_device.h> |
| 16 | #include <sound/pcm.h> |
| 17 | #include <sound/soc.h> |
| 18 | #include <sound/soc-dai.h> |
| 19 | |
| 20 | #include "lpass-lpaif-reg.h" |
| 21 | #include "lpass.h" |
| 22 | |
| 23 | enum lpaif_i2s_ports { |
| 24 | IPQ806X_LPAIF_I2S_PORT_CODEC_SPK, |
| 25 | IPQ806X_LPAIF_I2S_PORT_CODEC_MIC, |
| 26 | IPQ806X_LPAIF_I2S_PORT_SEC_SPK, |
| 27 | IPQ806X_LPAIF_I2S_PORT_SEC_MIC, |
| 28 | IPQ806X_LPAIF_I2S_PORT_MI2S, |
| 29 | }; |
| 30 | |
| 31 | enum lpaif_dma_channels { |
| 32 | IPQ806X_LPAIF_RDMA_CHAN_MI2S, |
| 33 | IPQ806X_LPAIF_RDMA_CHAN_PCM0, |
| 34 | IPQ806X_LPAIF_RDMA_CHAN_PCM1, |
| 35 | }; |
| 36 | |
| 37 | static struct snd_soc_dai_driver ipq806x_lpass_cpu_dai_driver = { |
| 38 | .id = IPQ806X_LPAIF_I2S_PORT_MI2S, |
| 39 | .playback = { |
| 40 | .stream_name = "lpass-cpu-playback", |
| 41 | .formats = SNDRV_PCM_FMTBIT_S16 | |
| 42 | SNDRV_PCM_FMTBIT_S24 | |
| 43 | SNDRV_PCM_FMTBIT_S32, |
| 44 | .rates = SNDRV_PCM_RATE_8000 | |
| 45 | SNDRV_PCM_RATE_16000 | |
| 46 | SNDRV_PCM_RATE_32000 | |
| 47 | SNDRV_PCM_RATE_48000 | |
| 48 | SNDRV_PCM_RATE_96000, |
| 49 | .rate_min = 8000, |
| 50 | .rate_max = 96000, |
| 51 | .channels_min = 1, |
| 52 | .channels_max = 8, |
| 53 | }, |
| 54 | .probe = &asoc_qcom_lpass_cpu_dai_probe, |
| 55 | .ops = &asoc_qcom_lpass_cpu_dai_ops, |
| 56 | }; |
| 57 | |
| 58 | static int ipq806x_lpass_alloc_dma_channel(struct lpass_data *drvdata, int dir) |
| 59 | { |
| 60 | if (dir == SNDRV_PCM_STREAM_PLAYBACK) |
| 61 | return IPQ806X_LPAIF_RDMA_CHAN_MI2S; |
| 62 | else /* Capture currently not implemented */ |
| 63 | return -EINVAL; |
| 64 | } |
| 65 | |
| 66 | static int ipq806x_lpass_free_dma_channel(struct lpass_data *drvdata, int chan) |
| 67 | { |
| 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | static struct lpass_variant ipq806x_data = { |
| 72 | .i2sctrl_reg_base = 0x0010, |
| 73 | .i2sctrl_reg_stride = 0x04, |
| 74 | .i2s_ports = 5, |
| 75 | .irq_reg_base = 0x3000, |
| 76 | .irq_reg_stride = 0x1000, |
| 77 | .irq_ports = 3, |
| 78 | .rdma_reg_base = 0x6000, |
| 79 | .rdma_reg_stride = 0x1000, |
| 80 | .rdma_channels = 4, |
| 81 | .wrdma_reg_base = 0xB000, |
| 82 | .wrdma_reg_stride = 0x1000, |
| 83 | .wrdma_channel_start = 5, |
| 84 | .wrdma_channels = 4, |
| 85 | .dai_driver = &ipq806x_lpass_cpu_dai_driver, |
| 86 | .num_dai = 1, |
| 87 | .dai_osr_clk_names = (const char *[]) { |
| 88 | "mi2s-osr-clk", |
| 89 | }, |
| 90 | .dai_bit_clk_names = (const char *[]) { |
| 91 | "mi2s-bit-clk", |
| 92 | }, |
| 93 | .alloc_dma_channel = ipq806x_lpass_alloc_dma_channel, |
| 94 | .free_dma_channel = ipq806x_lpass_free_dma_channel, |
| 95 | }; |
| 96 | |
| 97 | static const struct of_device_id ipq806x_lpass_cpu_device_id[] = { |
| 98 | { .compatible = "qcom,lpass-cpu", .data = &ipq806x_data }, |
| 99 | {} |
| 100 | }; |
| 101 | MODULE_DEVICE_TABLE(of, ipq806x_lpass_cpu_device_id); |
| 102 | |
| 103 | static struct platform_driver ipq806x_lpass_cpu_platform_driver = { |
| 104 | .driver = { |
| 105 | .name = "lpass-cpu", |
| 106 | .of_match_table = of_match_ptr(ipq806x_lpass_cpu_device_id), |
| 107 | }, |
| 108 | .probe = asoc_qcom_lpass_cpu_platform_probe, |
| 109 | .remove = asoc_qcom_lpass_cpu_platform_remove, |
| 110 | }; |
| 111 | module_platform_driver(ipq806x_lpass_cpu_platform_driver); |
| 112 | |
| 113 | MODULE_DESCRIPTION("QTi LPASS CPU Driver"); |
| 114 | MODULE_LICENSE("GPL v2"); |