1/*
2 * Copyright (c) 2010-2011,2013-2015 The Linux Foundation. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 and
6 * only version 2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11 * GNU General Public License for more details.
12 *
13 * lpass-ipq806x.c -- ALSA SoC CPU DAI driver for QTi LPASS
14 * Splited out the IPQ8064 soc specific from lpass-cpu.c
15 */
16
17#include <linux/clk.h>
18#include <linux/device.h>
19#include <linux/err.h>
20#include <linux/kernel.h>
21#include <linux/module.h>
22#include <linux/of.h>
23#include <linux/platform_device.h>
24#include <sound/pcm.h>
25#include <sound/soc.h>
26#include <sound/soc-dai.h>
27
28#include "lpass-lpaif-reg.h"
29#include "lpass.h"
30
31enum lpaif_i2s_ports {
32	IPQ806X_LPAIF_I2S_PORT_CODEC_SPK,
33	IPQ806X_LPAIF_I2S_PORT_CODEC_MIC,
34	IPQ806X_LPAIF_I2S_PORT_SEC_SPK,
35	IPQ806X_LPAIF_I2S_PORT_SEC_MIC,
36	IPQ806X_LPAIF_I2S_PORT_MI2S,
37};
38
39enum lpaif_dma_channels {
40	IPQ806X_LPAIF_RDMA_CHAN_MI2S,
41	IPQ806X_LPAIF_RDMA_CHAN_PCM0,
42	IPQ806X_LPAIF_RDMA_CHAN_PCM1,
43};
44
45static struct snd_soc_dai_driver ipq806x_lpass_cpu_dai_driver = {
46	.id	= IPQ806X_LPAIF_I2S_PORT_MI2S,
47	.playback = {
48		.stream_name	= "lpass-cpu-playback",
49		.formats	= SNDRV_PCM_FMTBIT_S16 |
50					SNDRV_PCM_FMTBIT_S24 |
51					SNDRV_PCM_FMTBIT_S32,
52		.rates		= SNDRV_PCM_RATE_8000 |
53					SNDRV_PCM_RATE_16000 |
54					SNDRV_PCM_RATE_32000 |
55					SNDRV_PCM_RATE_48000 |
56					SNDRV_PCM_RATE_96000,
57		.rate_min	= 8000,
58		.rate_max	= 96000,
59		.channels_min	= 1,
60		.channels_max	= 8,
61	},
62	.probe	= &asoc_qcom_lpass_cpu_dai_probe,
63	.ops    = &asoc_qcom_lpass_cpu_dai_ops,
64};
65
66static int ipq806x_lpass_alloc_dma_channel(struct lpass_data *drvdata)
67{
68	return IPQ806X_LPAIF_RDMA_CHAN_MI2S;
69}
70
71static int ipq806x_lpass_free_dma_channel(struct lpass_data *drvdata, int chan)
72{
73	return 0;
74}
75
76static struct lpass_variant ipq806x_data = {
77	.i2sctrl_reg_base	= 0x0010,
78	.i2sctrl_reg_stride	= 0x04,
79	.i2s_ports		= 5,
80	.irq_reg_base		= 0x3000,
81	.irq_reg_stride		= 0x1000,
82	.irq_ports		= 3,
83	.rdma_reg_base		= 0x6000,
84	.rdma_reg_stride	= 0x1000,
85	.rdma_channels		= 4,
86	.dai_driver		= &ipq806x_lpass_cpu_dai_driver,
87	.num_dai		= 1,
88	.alloc_dma_channel	= ipq806x_lpass_alloc_dma_channel,
89	.free_dma_channel	= ipq806x_lpass_free_dma_channel,
90};
91
92static const struct of_device_id ipq806x_lpass_cpu_device_id[] = {
93	{ .compatible = "qcom,lpass-cpu", .data = &ipq806x_data },
94	{}
95};
96MODULE_DEVICE_TABLE(of, ipq806x_lpass_cpu_device_id);
97
98static struct platform_driver ipq806x_lpass_cpu_platform_driver = {
99	.driver	= {
100		.name		= "lpass-cpu",
101		.of_match_table	= of_match_ptr(ipq806x_lpass_cpu_device_id),
102	},
103	.probe	= asoc_qcom_lpass_cpu_platform_probe,
104	.remove	= asoc_qcom_lpass_cpu_platform_remove,
105};
106module_platform_driver(ipq806x_lpass_cpu_platform_driver);
107
108MODULE_DESCRIPTION("QTi LPASS CPU Driver");
109MODULE_LICENSE("GPL v2");
110