diff options
Diffstat (limited to 'kernel/sound/soc/ux500/mop500.c')
| -rw-r--r-- | kernel/sound/soc/ux500/mop500.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/kernel/sound/soc/ux500/mop500.c b/kernel/sound/soc/ux500/mop500.c new file mode 100644 index 000000000..4e0c0e502 --- /dev/null +++ b/kernel/sound/soc/ux500/mop500.c @@ -0,0 +1,165 @@ +/* + * Copyright (C) ST-Ericsson SA 2012 + * + * Author: Ola Lilja (ola.o.lilja@stericsson.com) + * for ST-Ericsson. + * + * License terms: + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <asm/mach-types.h> + +#include <linux/module.h> +#include <linux/io.h> +#include <linux/spi/spi.h> +#include <linux/of.h> + +#include <sound/soc.h> +#include <sound/initval.h> + +#include "ux500_pcm.h" +#include "ux500_msp_dai.h" + +#include "mop500_ab8500.h" + +/* Define the whole MOP500 soundcard, linking platform to the codec-drivers */ +static struct snd_soc_dai_link mop500_dai_links[] = { + { + .name = "ab8500_0", + .stream_name = "ab8500_0", + .cpu_dai_name = "ux500-msp-i2s.1", + .codec_dai_name = "ab8500-codec-dai.0", + .platform_name = "ux500-msp-i2s.1", + .codec_name = "ab8500-codec.0", + .init = mop500_ab8500_machine_init, + .ops = mop500_ab8500_ops, + }, + { + .name = "ab8500_1", + .stream_name = "ab8500_1", + .cpu_dai_name = "ux500-msp-i2s.3", + .codec_dai_name = "ab8500-codec-dai.1", + .platform_name = "ux500-msp-i2s.3", + .codec_name = "ab8500-codec.0", + .init = NULL, + .ops = mop500_ab8500_ops, + }, +}; + +static struct snd_soc_card mop500_card = { + .name = "MOP500-card", + .owner = THIS_MODULE, + .probe = NULL, + .dai_link = mop500_dai_links, + .num_links = ARRAY_SIZE(mop500_dai_links), +}; + +static void mop500_of_node_put(void) +{ + int i; + + for (i = 0; i < 2; i++) { + of_node_put(mop500_dai_links[i].cpu_of_node); + of_node_put(mop500_dai_links[i].codec_of_node); + } +} + +static int mop500_of_probe(struct platform_device *pdev, + struct device_node *np) +{ + struct device_node *codec_np, *msp_np[2]; + int i; + + msp_np[0] = of_parse_phandle(np, "stericsson,cpu-dai", 0); + msp_np[1] = of_parse_phandle(np, "stericsson,cpu-dai", 1); + codec_np = of_parse_phandle(np, "stericsson,audio-codec", 0); + + if (!(msp_np[0] && msp_np[1] && codec_np)) { + dev_err(&pdev->dev, "Phandle missing or invalid\n"); + mop500_of_node_put(); + return -EINVAL; + } + + for (i = 0; i < 2; i++) { + mop500_dai_links[i].cpu_of_node = msp_np[i]; + mop500_dai_links[i].cpu_dai_name = NULL; + mop500_dai_links[i].platform_of_node = msp_np[i]; + mop500_dai_links[i].platform_name = NULL; + mop500_dai_links[i].codec_of_node = codec_np; + mop500_dai_links[i].codec_name = NULL; + } + + snd_soc_of_parse_card_name(&mop500_card, "stericsson,card-name"); + + return 0; +} + +static int mop500_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + int ret; + + dev_dbg(&pdev->dev, "%s: Enter.\n", __func__); + + mop500_card.dev = &pdev->dev; + + if (np) { + ret = mop500_of_probe(pdev, np); + if (ret) + return ret; + } + + dev_dbg(&pdev->dev, "%s: Card %s: Set platform drvdata.\n", + __func__, mop500_card.name); + platform_set_drvdata(pdev, &mop500_card); + + snd_soc_card_set_drvdata(&mop500_card, NULL); + + dev_dbg(&pdev->dev, "%s: Card %s: num_links = %d\n", + __func__, mop500_card.name, mop500_card.num_links); + dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: name = %s\n", + __func__, mop500_card.name, mop500_card.dai_link[0].name); + dev_dbg(&pdev->dev, "%s: Card %s: DAI-link 0: stream_name = %s\n", + __func__, mop500_card.name, + mop500_card.dai_link[0].stream_name); + + ret = snd_soc_register_card(&mop500_card); + if (ret) + dev_err(&pdev->dev, + "Error: snd_soc_register_card failed (%d)!\n", ret); + + return ret; +} + +static int mop500_remove(struct platform_device *pdev) +{ + struct snd_soc_card *mop500_card = platform_get_drvdata(pdev); + + pr_debug("%s: Enter.\n", __func__); + + snd_soc_unregister_card(mop500_card); + mop500_ab8500_remove(mop500_card); + mop500_of_node_put(); + + return 0; +} + +static const struct of_device_id snd_soc_mop500_match[] = { + { .compatible = "stericsson,snd-soc-mop500", }, + {}, +}; + +static struct platform_driver snd_soc_mop500_driver = { + .driver = { + .name = "snd-soc-mop500", + .of_match_table = snd_soc_mop500_match, + }, + .probe = mop500_probe, + .remove = mop500_remove, +}; + +module_platform_driver(snd_soc_mop500_driver); |