diff options
| author | Shawn Guo <shawn.guo@linaro.org> | 2012-05-11 22:24:18 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-05-12 11:04:59 +0100 |
| commit | e968194b45c4e8077dada75c5bae5660b37628fe (patch) | |
| tree | 9da66cff5aa5373a694ea049a8a5633f956acdec /sound/soc/mxs/mxs-sgtl5000.c | |
| parent | 08641c7c74dddfcd726512edfaa3b4cbe42e523e (diff) | |
ASoC: mxs: add device tree support for mxs-sgtl5000
Add device tree probe for mxs-sgtl5000 machine driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/mxs/mxs-sgtl5000.c')
| -rw-r--r-- | sound/soc/mxs/mxs-sgtl5000.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sound/soc/mxs/mxs-sgtl5000.c b/sound/soc/mxs/mxs-sgtl5000.c index e9e6112ff196..3e6e8764b2e6 100644 --- a/sound/soc/mxs/mxs-sgtl5000.c +++ b/sound/soc/mxs/mxs-sgtl5000.c @@ -18,6 +18,8 @@ #include <linux/module.h> #include <linux/device.h> +#include <linux/of.h> +#include <linux/of_device.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/soc.h> @@ -110,11 +112,48 @@ static struct snd_soc_card mxs_sgtl5000 = { .num_links = ARRAY_SIZE(mxs_sgtl5000_dai), }; +static int __devinit mxs_sgtl5000_probe_dt(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct device_node *saif_np[2], *codec_np; + int i, ret = 0; + + if (!np) + return 1; /* no device tree */ + + saif_np[0] = of_parse_phandle(np, "saif-controllers", 0); + saif_np[1] = of_parse_phandle(np, "saif-controllers", 1); + codec_np = of_parse_phandle(np, "audio-codec", 0); + if (!saif_np[0] || !saif_np[1] || !codec_np) { + dev_err(&pdev->dev, "phandle missing or invalid\n"); + return -EINVAL; + } + + for (i = 0; i < 2; i++) { + mxs_sgtl5000_dai[i].codec_name = NULL; + mxs_sgtl5000_dai[i].codec_of_node = codec_np; + mxs_sgtl5000_dai[i].cpu_dai_name = NULL; + mxs_sgtl5000_dai[i].cpu_dai_of_node = saif_np[i]; + mxs_sgtl5000_dai[i].platform_name = NULL; + mxs_sgtl5000_dai[i].platform_of_node = saif_np[i]; + } + + of_node_put(codec_np); + of_node_put(saif_np[0]); + of_node_put(saif_np[1]); + + return ret; +} + static int __devinit mxs_sgtl5000_probe(struct platform_device *pdev) { struct snd_soc_card *card = &mxs_sgtl5000; int ret; + ret = mxs_sgtl5000_probe_dt(pdev); + if (ret < 0) + return ret; + /* * Set an init clock(11.28Mhz) for sgtl5000 initialization(i2c r/w). * The Sgtl5000 sysclk is derived from saif0 mclk and it's range @@ -148,10 +187,17 @@ static int __devexit mxs_sgtl5000_remove(struct platform_device *pdev) return 0; } +static const struct of_device_id mxs_sgtl5000_dt_ids[] = { + { .compatible = "fsl,mxs-audio-sgtl5000", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, mxs_sgtl5000_dt_ids); + static struct platform_driver mxs_sgtl5000_audio_driver = { .driver = { .name = "mxs-sgtl5000", .owner = THIS_MODULE, + .of_match_table = mxs_sgtl5000_dt_ids, }, .probe = mxs_sgtl5000_probe, .remove = __devexit_p(mxs_sgtl5000_remove), |