Merge remote-tracking branch 'iommu/next'
[deliverable/linux.git] / sound / soc / qcom / lpass.h
CommitLineData
cd59f138
KW
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.h - Definitions for the QTi LPASS
14 */
15
16#ifndef __LPASS_H__
17#define __LPASS_H__
18
19#include <linux/clk.h>
20#include <linux/compiler.h>
21#include <linux/platform_device.h>
22#include <linux/regmap.h>
23
24#define LPASS_AHBIX_CLOCK_FREQUENCY 131072000
9a127cff 25#define LPASS_MAX_MI2S_PORTS (8)
4f629e4b 26#define LPASS_MAX_DMA_CHANNELS (8)
cd59f138
KW
27
28/* Both the CPU DAI and platform drivers will access this data */
29struct lpass_data {
30
31 /* AHB-I/X bus clocks inside the low-power audio subsystem (LPASS) */
32 struct clk *ahbix_clk;
33
34 /* MI2S system clock */
9a127cff 35 struct clk *mi2s_osr_clk[LPASS_MAX_MI2S_PORTS];
cd59f138
KW
36
37 /* MI2S bit clock (derived from system clock by a divider */
9a127cff 38 struct clk *mi2s_bit_clk[LPASS_MAX_MI2S_PORTS];
cd59f138
KW
39
40 /* low-power audio interface (LPAIF) registers */
41 void __iomem *lpaif;
42
43 /* regmap backed by the low-power audio interface (LPAIF) registers */
44 struct regmap *lpaif_map;
45
46 /* interrupts from the low-power audio interface (LPAIF) */
47 int lpaif_irq;
9bae4880
SK
48
49 /* SOC specific variations in the LPASS IP integration */
50 struct lpass_variant *variant;
4f629e4b 51
89cdfa06 52 /* bit map to keep track of static channel allocations */
4d809fb1 53 unsigned long dma_ch_bit_map;
89cdfa06 54
4f629e4b
SK
55 /* used it for handling interrupt per dma channel */
56 struct snd_pcm_substream *substream[LPASS_MAX_DMA_CHANNELS];
dc1ebd18
SK
57
58 /* 8016 specific */
59 struct clk *pcnoc_mport_clk;
60 struct clk *pcnoc_sway_clk;
6adcbdcd
KM
61
62 void *private_data;
9bae4880
SK
63};
64
65/* Vairant data per each SOC */
66struct lpass_variant {
67 u32 i2sctrl_reg_base;
68 u32 i2sctrl_reg_stride;
69 u32 i2s_ports;
70 u32 irq_reg_base;
71 u32 irq_reg_stride;
72 u32 irq_ports;
73 u32 rdma_reg_base;
74 u32 rdma_reg_stride;
75 u32 rdma_channels;
ffc1325e
SK
76 u32 wrdma_reg_base;
77 u32 wrdma_reg_stride;
78 u32 wrdma_channels;
9bae4880 79
0054055c
SK
80 /**
81 * on SOCs like APQ8016 the channel control bits start
82 * at different offset to ipq806x
83 **/
ec5b8287 84 u32 dmactl_audif_start;
ffc1325e 85 u32 wrdma_channel_start;
9bae4880
SK
86 /* SOC specific intialization like clocks */
87 int (*init)(struct platform_device *pdev);
88 int (*exit)(struct platform_device *pdev);
73c847b6 89 int (*alloc_dma_channel)(struct lpass_data *data, int direction);
6db1c6ba 90 int (*free_dma_channel)(struct lpass_data *data, int ch);
9bae4880
SK
91
92 /* SOC specific dais */
93 struct snd_soc_dai_driver *dai_driver;
94 int num_dai;
cd59f138
KW
95};
96
97/* register the platform driver from the CPU DAI driver */
98int asoc_qcom_lpass_platform_register(struct platform_device *);
9bae4880
SK
99int asoc_qcom_lpass_cpu_platform_remove(struct platform_device *pdev);
100int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev);
101int asoc_qcom_lpass_cpu_dai_probe(struct snd_soc_dai *dai);
618718dc 102extern const struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops;
cd59f138
KW
103
104#endif /* __LPASS_H__ */
This page took 0.071505 seconds and 5 git commands to generate.