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"); 115