Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/sound/soc/ux500/mop500.c

  1 /*
  2  * Copyright (C) ST-Ericsson SA 2012
  3  *
  4  * Author: Ola Lilja (ola.o.lilja@stericsson.com)
  5  *         for ST-Ericsson.
  6  *
  7  * License terms:
  8  *
  9  * This program is free software; you can redistribute it and/or modify
 10  * it under the terms of the GNU General Public License version 2 as published
 11  * by the Free Software Foundation.
 12  */
 13 
 14 #include <asm/mach-types.h>
 15 
 16 #include <linux/module.h>
 17 #include <linux/io.h>
 18 #include <linux/spi/spi.h>
 19 #include <linux/of.h>
 20 
 21 #include <sound/soc.h>
 22 #include <sound/initval.h>
 23 
 24 #include "ux500_pcm.h"
 25 #include "ux500_msp_dai.h"
 26 
 27 #include "mop500_ab8500.h"
 28 
 29 /* Define the whole MOP500 soundcard, linking platform to the codec-drivers  */
 30 static struct snd_soc_dai_link mop500_dai_links[] = {
 31         {
 32                 .name = "ab8500_0",
 33                 .stream_name = "ab8500_0",
 34                 .cpu_dai_name = "ux500-msp-i2s.1",
 35                 .codec_dai_name = "ab8500-codec-dai.0",
 36                 .platform_name = "ux500-msp-i2s.1",
 37                 .codec_name = "ab8500-codec.0",
 38                 .init = mop500_ab8500_machine_init,
 39                 .ops = mop500_ab8500_ops,
 40         },
 41         {
 42                 .name = "ab8500_1",
 43                 .stream_name = "ab8500_1",
 44                 .cpu_dai_name = "ux500-msp-i2s.3",
 45                 .codec_dai_name = "ab8500-codec-dai.1",
 46                 .platform_name = "ux500-msp-i2s.3",
 47                 .codec_name = "ab8500-codec.0",
 48                 .init = NULL,
 49                 .ops = mop500_ab8500_ops,
 50         },
 51 };
 52 
 53 static struct snd_soc_card mop500_card = {
 54         .name = "MOP500-card",
 55         .owner = THIS_MODULE,
 56         .probe = NULL,
 57         .dai_link = mop500_dai_links,
 58         .num_links = ARRAY_SIZE(mop500_dai_links),
 59 };
 60 
 61 static void mop500_of_node_put(void)
 62 {
 63         int i;
 64 
 65         for (i = 0; i < 2; i++) {
 66                 if (mop500_dai_links[i].cpu_of_node)
 67                         of_node_put((struct device_node *)
 68                                 mop500_dai_links[i].cpu_of_node);
 69                 if (mop500_dai_links[i].codec_of_node)
 70                         of_node_put((struct device_node *)
 71                                 mop500_dai_links[i].codec_of_node);
 72         }
 73 }
 74 
 75 static int mop500_of_probe(struct platform_device *pdev,
 76                            struct device_node *np)
 77 {
 78         struct device_node *codec_np, *msp_np[2];
 79         int i;
 80 
 81         msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0);
 82         msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1);
 83         codec_np  = of_parse_phandle(np, "stericsson,audio-codec", 0);
 84 
 85         if (!(msp_np[0] && msp_np[1] && codec_np)) {
 86                 dev_err(&pdev->dev, "Phandle missing or invalid\n");
 87                 mop500_of_node_put();
 88                 return -EINVAL;
 89         }
 90 
 91         for (i = 0; i < 2; i++) {
 92                 mop500_dai_links[i].cpu_of_node = msp_np[i];
 93                 mop500_dai_links[i].cpu_dai_name = NULL;
 94                 mop500_dai_links[i].platform_of_node = msp_np[i];
 95                 mop500_dai_links[i].platform_name = NULL;
 96                 mop500_dai_links[i].codec_of_node = codec_np;
 97                 mop500_dai_links[i].codec_name = NULL;
 98         }
 99 
100         snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name");
101 
102         return 0;
103 }
104 
105 static int mop500_probe(struct platform_device *pdev)
106 {
107         struct device_node *np = pdev->dev.of_node;
108         int ret;
109 
110         dev_dbg(&pdev->dev, "%s: Enter.\n", __func__);
111 
112         mop500_card.dev = &pdev->dev;
113 
114         if (np) {
115                 ret = mop500_of_probe(pdev, np);
116                 if (ret)
117                         return ret;
118         }
119 
120         dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n",
121                 __func__, mop500_card.name);
122         platform_set_drvdata(pdev, &mop500_card);
123 
124         snd_soc_card_set_drvdata(&mop500_card, NULL);
125 
126         dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n",
127                 __func__, mop500_card.name, mop500_card.num_links);
128         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n",
129                 __func__, mop500_card.name, mop500_card.dai_link[0].name);
130         dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n",
131                 __func__, mop500_card.name,
132                 mop500_card.dai_link[0].stream_name);
133 
134         ret = snd_soc_register_card(&mop500_card);
135         if (ret)
136                 dev_err(&pdev->dev,
137                         "Error: snd_soc_register_card failed (%d)!\n", ret);
138 
139         return ret;
140 }
141 
142 static int mop500_remove(struct platform_device *pdev)
143 {
144         struct snd_soc_card *mop500_card = platform_get_drvdata(pdev);
145 
146         pr_debug("%s: Enter.\n", __func__);
147 
148         snd_soc_unregister_card(mop500_card);
149         mop500_ab8500_remove(mop500_card);
150         mop500_of_node_put();
151 
152         return 0;
153 }
154 
155 static const struct of_device_id snd_soc_mop500_match[] = {
156         { .compatible = "stericsson,snd-soc-mop500", },
157         {},
158 };
159 
160 static struct platform_driver snd_soc_mop500_driver = {
161         .driver = {
162                 .owner = THIS_MODULE,
163                 .name = "snd-soc-mop500",
164                 .of_match_table = snd_soc_mop500_match,
165         },
166         .probe = mop500_probe,
167         .remove = mop500_remove,
168 };
169 
170 module_platform_driver(snd_soc_mop500_driver);
171 

This page was automatically generated by LXR 0.3.1 (source).  •  Linux is a registered trademark of Linus Torvalds  •  Contact us