diff options
Diffstat (limited to 'sound/soc/fsl/imx-rpmsg.c')
| -rw-r--r-- | sound/soc/fsl/imx-rpmsg.c | 102 |
1 files changed, 88 insertions, 14 deletions
diff --git a/sound/soc/fsl/imx-rpmsg.c b/sound/soc/fsl/imx-rpmsg.c index 3c7b95db2eac..53f04d1f3280 100644 --- a/sound/soc/fsl/imx-rpmsg.c +++ b/sound/soc/fsl/imx-rpmsg.c @@ -5,9 +5,7 @@ #include <linux/of_platform.h> #include <linux/of_reserved_mem.h> #include <linux/i2c.h> -#include <linux/of_gpio.h> #include <linux/slab.h> -#include <linux/gpio.h> #include <linux/clk.h> #include <sound/soc.h> #include <sound/jack.h> @@ -20,8 +18,11 @@ struct imx_rpmsg { struct snd_soc_dai_link dai; struct snd_soc_card card; unsigned long sysclk; + bool lpa; }; +static struct dev_pm_ops lpa_pm; + static const struct snd_soc_dapm_widget imx_rpmsg_dapm_widgets[] = { SND_SOC_DAPM_HP("Headphone Jack", NULL), SND_SOC_DAPM_SPK("Ext Spk", NULL), @@ -34,10 +35,62 @@ static int imx_rpmsg_late_probe(struct snd_soc_card *card) struct imx_rpmsg *data = snd_soc_card_get_drvdata(card); struct snd_soc_pcm_runtime *rtd = list_first_entry(&card->rtd_list, struct snd_soc_pcm_runtime, list); - struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0); + struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); struct device *dev = card->dev; int ret; + if (data->lpa) { + struct snd_soc_component *codec_comp; + struct device_node *codec_np; + struct device_driver *codec_drv; + struct device *codec_dev = NULL; + + codec_np = data->dai.codecs->of_node; + if (codec_np) { + struct platform_device *codec_pdev; + struct i2c_client *codec_i2c; + + codec_i2c = of_find_i2c_device_by_node(codec_np); + if (codec_i2c) + codec_dev = &codec_i2c->dev; + if (!codec_dev) { + codec_pdev = of_find_device_by_node(codec_np); + if (codec_pdev) + codec_dev = &codec_pdev->dev; + } + } + if (codec_dev) { + codec_comp = snd_soc_lookup_component_nolocked(codec_dev, NULL); + if (codec_comp) { + int i, num_widgets; + const char *widgets; + struct snd_soc_dapm_context *dapm; + + num_widgets = of_property_count_strings(data->card.dev->of_node, + "ignore-suspend-widgets"); + for (i = 0; i < num_widgets; i++) { + of_property_read_string_index(data->card.dev->of_node, + "ignore-suspend-widgets", + i, &widgets); + dapm = snd_soc_component_to_dapm(codec_comp); + snd_soc_dapm_ignore_suspend(dapm, widgets); + } + } + codec_drv = codec_dev->driver; + if (codec_drv->pm) { + memcpy(&lpa_pm, codec_drv->pm, sizeof(lpa_pm)); + lpa_pm.suspend = NULL; + lpa_pm.resume = NULL; + lpa_pm.freeze = NULL; + lpa_pm.thaw = NULL; + lpa_pm.poweroff = NULL; + lpa_pm.restore = NULL; + codec_drv->pm = &lpa_pm; + } + put_device(codec_dev); + } + } + if (!data->sysclk) return 0; @@ -53,10 +106,8 @@ static int imx_rpmsg_late_probe(struct snd_soc_card *card) static int imx_rpmsg_probe(struct platform_device *pdev) { struct snd_soc_dai_link_component *dlc; - struct device *dev = pdev->dev.parent; - /* rpmsg_pdev is the platform device for the rpmsg node that probed us */ - struct platform_device *rpmsg_pdev = to_platform_device(dev); - struct device_node *np = rpmsg_pdev->dev.of_node; + struct snd_soc_dai *cpu_dai; + struct device_node *np = NULL; struct of_phandle_args args; const char *platform_name; struct imx_rpmsg *data; @@ -72,10 +123,6 @@ static int imx_rpmsg_probe(struct platform_device *pdev) goto fail; } - ret = of_reserved_mem_device_init_by_idx(&pdev->dev, np, 0); - if (ret) - dev_warn(&pdev->dev, "no reserved DMA memory\n"); - data->dai.cpus = &dlc[0]; data->dai.num_cpus = 1; data->dai.platforms = &dlc[1]; @@ -89,10 +136,35 @@ static int imx_rpmsg_probe(struct platform_device *pdev) SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBC_CFC; + /* + * i.MX rpmsg sound cards work on codec slave mode. MCLK will be + * disabled by CPU DAI driver in hw_free(). Some codec requires MCLK + * present at power up/down sequence. So need to set ignore_pmdown_time + * to power down codec immediately before MCLK is turned off. + */ + data->dai.ignore_pmdown_time = 1; + + data->dai.cpus->dai_name = pdev->dev.platform_data; + cpu_dai = snd_soc_find_dai(data->dai.cpus); + if (!cpu_dai) { + ret = -EPROBE_DEFER; + goto fail; + } + np = cpu_dai->dev->of_node; + if (!np) { + dev_err(&pdev->dev, "failed to parse CPU DAI device node\n"); + ret = -ENODEV; + goto fail; + } + + ret = of_reserved_mem_device_init_by_idx(&pdev->dev, np, 0); + if (ret) + dev_warn(&pdev->dev, "no reserved DMA memory\n"); + /* Optional codec node */ ret = of_parse_phandle_with_fixed_args(np, "audio-codec", 0, 0, &args); if (ret) { - *data->dai.codecs = asoc_dummy_dlc; + *data->dai.codecs = snd_soc_dummy_dlc; } else { struct clk *clk; @@ -107,7 +179,6 @@ static int imx_rpmsg_probe(struct platform_device *pdev) data->sysclk = clk_get_rate(clk); } - data->dai.cpus->dai_name = dev_name(&rpmsg_pdev->dev); if (!of_property_read_string(np, "fsl,rpmsg-channel-name", &platform_name)) data->dai.platforms->name = platform_name; else @@ -129,6 +200,9 @@ static int imx_rpmsg_probe(struct platform_device *pdev) goto fail; } + if (of_property_read_bool(np, "fsl,enable-lpa")) + data->lpa = true; + data->card.dev = &pdev->dev; data->card.owner = THIS_MODULE; data->card.dapm_widgets = imx_rpmsg_dapm_widgets; @@ -144,7 +218,7 @@ static int imx_rpmsg_probe(struct platform_device *pdev) if (ret) goto fail; - if (of_property_read_bool(np, "audio-routing")) { + if (of_property_present(np, "audio-routing")) { ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing"); if (ret) { dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret); |