From: Kenneth Westfield kwestfie@codeaurora.org
Add machine driver for the IPQ806X LPASS SOC.
Signed-off-by: Kenneth Westfield kwestfie@codeaurora.org Acked-by: Banajit Goswami bgoswami@codeaurora.org --- sound/soc/qcom/ipq806x.c | 127 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 127 insertions(+) create mode 100644 sound/soc/qcom/ipq806x.c
diff --git a/sound/soc/qcom/ipq806x.c b/sound/soc/qcom/ipq806x.c new file mode 100644 index 0000000000000000000000000000000000000000..58bc64105ce6176cbe9408e5a75e4a7d7be437a1 --- /dev/null +++ b/sound/soc/qcom/ipq806x.c @@ -0,0 +1,127 @@ +/* + * Copyright (c) 2010-2011,2013-2014 The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/module.h> +#include <sound/soc.h> + +#define DRV_NAME "ipq806x-machine" + +static struct snd_soc_dai_link ipq806x_machine_dai_link = { + .name = "IPQ806x Media1", + .stream_name = "MultiMedia1", +}; + +static int ipq806x_populate_dai_link_of_nodes(struct snd_soc_card *card) +{ + int ret; + struct device *cdev = card->dev; + struct snd_soc_dai_link *dai_link = card->dai_link; + struct device_node *np; + + np = of_parse_phandle(cdev->of_node, "platform", 0); + if (!np) { + dev_err(cdev, "%s: no phandle for platform driver\n", + __func__); + return -ENODEV; + } + dai_link->platform_of_node = np; + + np = of_parse_phandle(cdev->of_node, "cpu", 0); + if (!np) { + dev_err(cdev, "%s: no phandle for cpu-dai driver\n", __func__); + return -ENODEV; + } + dai_link->cpu_of_node = np; + + np = of_parse_phandle(cdev->of_node, "codec", 0); + if (!np) { + dev_err(cdev, "%s: no phandle for codec driver\n", __func__); + return -ENODEV; + } + dai_link->codec_of_node = np; + + ret = of_property_read_string(cdev->of_node, "codec-dai", + &dai_link->codec_dai_name); + if (ret) { + dev_err(cdev, "%s: no name for codec dai\n", __func__); + return ret; + } + + return 0; +} + +static struct snd_soc_card ipq806x_machine_soc_card = { + .name = DRV_NAME, + .dev = NULL, +}; + +static int ipq806x_machine_platform_probe(struct platform_device *pdev) +{ + int ret; + struct snd_soc_card *card = &ipq806x_machine_soc_card; + + if (card->dev) { + dev_err(&pdev->dev, "soundcard instance already created\n"); + return -ENODEV; + } + + card->dev = &pdev->dev; + platform_set_drvdata(pdev, card); + + ret = snd_soc_of_parse_card_name(card, "qcom,model"); + if (ret) { + dev_err(&pdev->dev, "parse card name failed, err:%d\n", ret); + return ret; + } + + card->dai_link = &ipq806x_machine_dai_link; + card->num_links = 1; + + ret = ipq806x_populate_dai_link_of_nodes(card); + if (ret) { + dev_err(&pdev->dev, "could not resolve dai links, err:%d\n", + ret); + return ret; + } + + ret = devm_snd_soc_register_card(&pdev->dev, card); + if (ret == -EPROBE_DEFER) { + card->dev = NULL; + return ret; + } else if (ret) { + dev_err(&pdev->dev, "snd_soc_register_card failed: %d\n", ret); + return ret; + } + + return 0; +} + +static const struct of_device_id ipq806x_machine_dt_match[] = { + { .compatible = "qcom,ipq806x-snd-card", }, + {}, +}; + +static struct platform_driver ipq806x_machine_platform_driver = { + .driver = { + .name = DRV_NAME, + .of_match_table = ipq806x_machine_dt_match, + .pm = &snd_soc_pm_ops, + }, + .probe = ipq806x_machine_platform_probe, +}; +module_platform_driver(ipq806x_machine_platform_driver); + +MODULE_DESCRIPTION("QCOM IPQ806X MACHINE DRIVER"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" DRV_NAME); +MODULE_DEVICE_TABLE(of, ipq806x_asoc_machine_of_match);