/* * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * 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_alloc_dma_channel(struct lpass_data *drvdata, int dir) { 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) { 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, .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", }, .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[] = { { .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");