Since we can now support multiple platforms allow machines to not specify a platform in a DAI link. Since the rest of the code requires that we have a struct device for all objects we do this by substituting in a dummy device that we register automatically.
Signed-off-by: Mark Brown broonie@opensource.wolfsonmicro.com --- sound/soc/soc-core.c | 15 +++++++++---- sound/soc/soc-utils.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 65 insertions(+), 5 deletions(-)
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index cb93b79..e851aa7 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -1357,13 +1357,18 @@ find_codec: dai_link->codec_name);
find_platform: - /* do we already have the CODEC DAI for this link ? */ - if (rtd->platform) { + /* do we need a platform? */ + if (rtd->platform) goto out; - } - /* no, then find CPU DAI from registered DAIs*/ + + /* if there's no platform we match on the empty platform */ + platform_name = dai_link->platform_name; + if (!platform_name) + platform_name = "snd-soc-dummy"; + + /* no, then find one from the set of registered platforms */ list_for_each_entry(platform, &platform_list, list) { - if (!strcmp(platform->name, dai_link->platform_name)) { + if (!strcmp(platform->name, platform_name)) { rtd->platform = platform; goto out; } diff --git a/sound/soc/soc-utils.c b/sound/soc/soc-utils.c index 3f45e6a..2865791 100644 --- a/sound/soc/soc-utils.c +++ b/sound/soc/soc-utils.c @@ -13,6 +13,7 @@ * option) any later version. */
+#include <linux/platform_device.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -55,3 +56,57 @@ int snd_soc_params_to_bclk(struct snd_pcm_hw_params *params) return ret; } EXPORT_SYMBOL_GPL(snd_soc_params_to_bclk); + +static struct snd_soc_platform_driver dummy_platform; + +static __devinit int snd_soc_dummy_probe(struct platform_device *pdev) +{ + return snd_soc_register_platform(&pdev->dev, &dummy_platform); +} + +static __devexit int snd_soc_dummy_remove(struct platform_device *pdev) +{ + snd_soc_unregister_platform(&pdev->dev); + + return 0; +} + +static struct platform_driver soc_dummy_driver = { + .driver = { + .name = "snd-soc-dummy", + .owner = THIS_MODULE, + }, + .probe = snd_soc_dummy_probe, + .remove = __devexit_p(snd_soc_dummy_remove), +}; + +static struct platform_device *soc_dummy_dev; + +static int __init snd_soc_util_init(void) +{ + int ret; + + soc_dummy_dev = platform_device_alloc("snd-soc-dummy", -1); + if (!soc_dummy_dev) + return -ENOMEM; + + ret = platform_device_add(soc_dummy_dev); + if (ret != 0) { + platform_device_put(soc_dummy_dev); + return ret; + } + + ret = platform_driver_register(&soc_dummy_driver); + if (ret != 0) + platform_device_unregister(soc_dummy_dev); + + return ret; +} +module_init(snd_soc_util_init); + +static void __exit snd_soc_util_exit(void) +{ + platform_device_unregister(soc_dummy_dev); + platform_driver_unregister(&soc_dummy_driver); +} +module_exit(snd_soc_util_exit);