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Diffstat (limited to 'sound/soc/fsl/imx-rpmsg.c')
-rw-r--r--sound/soc/fsl/imx-rpmsg.c106
1 files changed, 89 insertions, 17 deletions
diff --git a/sound/soc/fsl/imx-rpmsg.c b/sound/soc/fsl/imx-rpmsg.c
index 89178106fe2c..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];
@@ -89,16 +136,39 @@ 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->dai_name = "snd-soc-dummy-dai";
- data->dai.codecs->name = "snd-soc-dummy";
+ *data->dai.codecs = snd_soc_dummy_dlc;
} else {
struct clk *clk;
- data->dai.codecs->of_node = args.np;
- ret = snd_soc_get_dai_name(&args, &data->dai.codecs->dai_name);
+ ret = snd_soc_get_dlc(&args, data->dai.codecs);
if (ret) {
dev_err(&pdev->dev, "Unable to get codec_dai_name\n");
goto fail;
@@ -109,7 +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
@@ -131,6 +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;
@@ -146,7 +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);
generated by cgit (git 2.34.1) at 2025-12-25 13:45:06 +0000