ASoC: au1x: convert to platform drivers.
[linux-2.6.git] / sound / soc / au1x / sample-ac97.c
1 /*
2  * Sample Au12x0/Au1550 PSC AC97 sound machine.
3  *
4  * Copyright (c) 2007-2008 Manuel Lauss <mano@roarinelk.homelinux.net>
5  *
6  *  This program is free software; you can redistribute it and/or modify
7  *  it under the terms outlined in the file COPYING at the root of this
8  *  source archive.
9  *
10  * This is a very generic AC97 sound machine driver for boards which
11  * have (AC97) audio at PSC1 (e.g. DB1200 demoboards).
12  */
13
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/timer.h>
17 #include <linux/interrupt.h>
18 #include <linux/platform_device.h>
19 #include <sound/core.h>
20 #include <sound/pcm.h>
21 #include <sound/soc.h>
22 #include <sound/soc-dapm.h>
23 #include <asm/mach-au1x00/au1000.h>
24 #include <asm/mach-au1x00/au1xxx_psc.h>
25 #include <asm/mach-au1x00/au1xxx_dbdma.h>
26
27 #include "../codecs/ac97.h"
28 #include "psc.h"
29
30 static int au1xpsc_sample_ac97_init(struct snd_soc_codec *codec)
31 {
32         snd_soc_dapm_sync(codec);
33         return 0;
34 }
35
36 static struct snd_soc_dai_link au1xpsc_sample_ac97_dai = {
37         .name           = "AC97",
38         .stream_name    = "AC97 HiFi",
39         .cpu_dai        = &au1xpsc_ac97_dai,    /* see psc-ac97.c */
40         .codec_dai      = &ac97_dai,            /* see codecs/ac97.c */
41         .init           = au1xpsc_sample_ac97_init,
42         .ops            = NULL,
43 };
44
45 static struct snd_soc_card au1xpsc_sample_ac97_machine = {
46         .name           = "Au1xxx PSC AC97 Audio",
47         .dai_link       = &au1xpsc_sample_ac97_dai,
48         .num_links      = 1,
49 };
50
51 static struct snd_soc_device au1xpsc_sample_ac97_devdata = {
52         .card           = &au1xpsc_sample_ac97_machine,
53         .platform       = &au1xpsc_soc_platform, /* see dbdma2.c */
54         .codec_dev      = &soc_codec_dev_ac97,
55 };
56
57 static struct resource au1xpsc_psc1_res[] = {
58         [0] = {
59                 .start  = CPHYSADDR(PSC1_BASE_ADDR),
60                 .end    = CPHYSADDR(PSC1_BASE_ADDR) + 0x000fffff,
61                 .flags  = IORESOURCE_MEM,
62         },
63         [1] = {
64 #ifdef CONFIG_SOC_AU1200
65                 .start  = AU1200_PSC1_INT,
66                 .end    = AU1200_PSC1_INT,
67 #elif defined(CONFIG_SOC_AU1550)
68                 .start  = AU1550_PSC1_INT,
69                 .end    = AU1550_PSC1_INT,
70 #endif
71                 .flags  = IORESOURCE_IRQ,
72         },
73         [2] = {
74                 .start  = DSCR_CMD0_PSC1_TX,
75                 .end    = DSCR_CMD0_PSC1_TX,
76                 .flags  = IORESOURCE_DMA,
77         },
78         [3] = {
79                 .start  = DSCR_CMD0_PSC1_RX,
80                 .end    = DSCR_CMD0_PSC1_RX,
81                 .flags  = IORESOURCE_DMA,
82         },
83 };
84
85 static struct platform_device *au1xpsc_sample_ac97_dev;
86
87 static int __init au1xpsc_sample_ac97_load(void)
88 {
89         int ret;
90
91 #ifdef CONFIG_SOC_AU1200
92         unsigned long io;
93
94         /* modify sys_pinfunc for AC97 on PSC1 */
95         io = au_readl(SYS_PINFUNC);
96         io |= SYS_PINFUNC_P1C;
97         io &= ~(SYS_PINFUNC_P1A | SYS_PINFUNC_P1B);
98         au_writel(io, SYS_PINFUNC);
99         au_sync();
100 #endif
101
102         ret = -ENOMEM;
103
104         /* setup PSC clock source for AC97 part: external clock provided
105          * by codec.  The psc-ac97.c driver depends on this setting!
106          */
107         au_writel(PSC_SEL_CLK_SERCLK, PSC1_BASE_ADDR + PSC_SEL_OFFSET);
108         au_sync();
109
110         au1xpsc_sample_ac97_dev = platform_device_alloc("soc-audio", -1);
111         if (!au1xpsc_sample_ac97_dev)
112                 goto out;
113
114         au1xpsc_sample_ac97_dev->resource =
115                 kmemdup(au1xpsc_psc1_res, sizeof(struct resource) *
116                         ARRAY_SIZE(au1xpsc_psc1_res), GFP_KERNEL);
117         au1xpsc_sample_ac97_dev->num_resources = ARRAY_SIZE(au1xpsc_psc1_res);
118         au1xpsc_sample_ac97_dev->id = 1;
119
120         platform_set_drvdata(au1xpsc_sample_ac97_dev,
121                              &au1xpsc_sample_ac97_devdata);
122         au1xpsc_sample_ac97_devdata.dev = &au1xpsc_sample_ac97_dev->dev;
123         ret = platform_device_add(au1xpsc_sample_ac97_dev);
124
125         if (ret) {
126                 platform_device_put(au1xpsc_sample_ac97_dev);
127                 au1xpsc_sample_ac97_dev = NULL;
128         }
129
130 out:
131         return ret;
132 }
133
134 static void __exit au1xpsc_sample_ac97_exit(void)
135 {
136         platform_device_unregister(au1xpsc_sample_ac97_dev);
137 }
138
139 module_init(au1xpsc_sample_ac97_load);
140 module_exit(au1xpsc_sample_ac97_exit);
141
142 MODULE_LICENSE("GPL");
143 MODULE_DESCRIPTION("Au1xxx PSC sample AC97 machine");
144 MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");