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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 | |
25 | ||
26 | /* Both the CPU DAI and platform drivers will access this data */ | |
27 | struct lpass_data { | |
28 | ||
29 | /* AHB-I/X bus clocks inside the low-power audio subsystem (LPASS) */ | |
30 | struct clk *ahbix_clk; | |
31 | ||
32 | /* MI2S system clock */ | |
33 | struct clk *mi2s_osr_clk; | |
34 | ||
35 | /* MI2S bit clock (derived from system clock by a divider */ | |
36 | struct clk *mi2s_bit_clk; | |
37 | ||
38 | /* low-power audio interface (LPAIF) registers */ | |
39 | void __iomem *lpaif; | |
40 | ||
41 | /* regmap backed by the low-power audio interface (LPAIF) registers */ | |
42 | struct regmap *lpaif_map; | |
43 | ||
44 | /* interrupts from the low-power audio interface (LPAIF) */ | |
45 | int lpaif_irq; | |
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46 | |
47 | /* SOC specific variations in the LPASS IP integration */ | |
48 | struct lpass_variant *variant; | |
49 | }; | |
50 | ||
51 | /* Vairant data per each SOC */ | |
52 | struct lpass_variant { | |
53 | u32 i2sctrl_reg_base; | |
54 | u32 i2sctrl_reg_stride; | |
55 | u32 i2s_ports; | |
56 | u32 irq_reg_base; | |
57 | u32 irq_reg_stride; | |
58 | u32 irq_ports; | |
59 | u32 rdma_reg_base; | |
60 | u32 rdma_reg_stride; | |
61 | u32 rdma_channels; | |
62 | ||
63 | /* SOC specific intialization like clocks */ | |
64 | int (*init)(struct platform_device *pdev); | |
65 | int (*exit)(struct platform_device *pdev); | |
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66 | int (*alloc_dma_channel)(struct lpass_data *data); |
67 | int (*free_dma_channel)(struct lpass_data *data, int ch); | |
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68 | |
69 | /* SOC specific dais */ | |
70 | struct snd_soc_dai_driver *dai_driver; | |
71 | int num_dai; | |
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72 | }; |
73 | ||
74 | /* register the platform driver from the CPU DAI driver */ | |
75 | int asoc_qcom_lpass_platform_register(struct platform_device *); | |
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76 | int asoc_qcom_lpass_cpu_platform_remove(struct platform_device *pdev); |
77 | int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev); | |
78 | int asoc_qcom_lpass_cpu_dai_probe(struct snd_soc_dai *dai); | |
79 | extern struct snd_soc_dai_ops asoc_qcom_lpass_cpu_dai_ops; | |
cd59f138 KW |
80 | |
81 | #endif /* __LPASS_H__ */ |