Merge tag 'sound-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...

[sfrench/cifs-2.6.git] / sound / soc / intel / avs / boards / i2s_test.c

diff --git a/sound/soc/intel/avs/boards/i2s_test.c b/sound/soc/intel/avs/boards/i2s_test.c
new file mode 100644 (file)
index 0000000..8f0fd87
--- /dev/null
+++ b/sound/soc/intel/avs/boards/i2s_test.c
@@ -0,0 +1,180 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
+//
+// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
+//          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
+//
+
+#include <linux/module.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-acpi.h>
+#include <sound/soc-dapm.h>
+
+static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
+                              struct snd_soc_dai_link **dai_link)
+{
+       struct snd_soc_dai_link_component *platform;
+       struct snd_soc_dai_link *dl;
+
+       dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
+       platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
+       if (!dl || !platform)
+               return -ENOMEM;
+
+       platform->name = platform_name;
+
+       dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port);
+       dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
+       dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
+       if (!dl->name || !dl->cpus || !dl->codecs)
+               return -ENOMEM;
+
+       dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port);
+       dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "snd-soc-dummy");
+       dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, "snd-soc-dummy-dai");
+       if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
+               return -ENOMEM;
+
+       dl->num_cpus = 1;
+       dl->num_codecs = 1;
+       dl->platforms = platform;
+       dl->num_platforms = 1;
+       dl->id = 0;
+       dl->nonatomic = 1;
+       dl->no_pcm = 1;
+       dl->dpcm_capture = 1;
+       dl->dpcm_playback = 1;
+
+       *dai_link = dl;
+
+       return 0;
+}
+
+static int avs_create_dapm_routes(struct device *dev, int ssp_port,
+                                 struct snd_soc_dapm_route **routes, int *num_routes)
+{
+       struct snd_soc_dapm_route *dr;
+       const int num_dr = 2;
+
+       dr = devm_kcalloc(dev, num_dr, sizeof(*dr), GFP_KERNEL);
+       if (!dr)
+               return -ENOMEM;
+
+       dr[0].sink = devm_kasprintf(dev, GFP_KERNEL, "ssp%dpb", ssp_port);
+       dr[0].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Tx", ssp_port);
+       if (!dr[0].sink || !dr[0].source)
+               return -ENOMEM;
+
+       dr[1].sink = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Rx", ssp_port);
+       dr[1].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%dcp", ssp_port);
+       if (!dr[1].sink || !dr[1].source)
+               return -ENOMEM;
+
+       *routes = dr;
+       *num_routes = num_dr;
+
+       return 0;
+}
+
+static int avs_create_dapm_widgets(struct device *dev, int ssp_port,
+                                  struct snd_soc_dapm_widget **widgets, int *num_widgets)
+{
+       struct snd_soc_dapm_widget *dw;
+       const int num_dw = 2;
+
+       dw = devm_kcalloc(dev, num_dw, sizeof(*dw), GFP_KERNEL);
+       if (!dw)
+               return -ENOMEM;
+
+       dw[0].id = snd_soc_dapm_hp;
+       dw[0].reg = SND_SOC_NOPM;
+       dw[0].name = devm_kasprintf(dev, GFP_KERNEL, "ssp%dpb", ssp_port);
+       if (!dw[0].name)
+               return -ENOMEM;
+
+       dw[1].id = snd_soc_dapm_mic;
+       dw[1].reg = SND_SOC_NOPM;
+       dw[1].name = devm_kasprintf(dev, GFP_KERNEL, "ssp%dcp", ssp_port);
+       if (!dw[1].name)
+               return -ENOMEM;
+
+       *widgets = dw;
+       *num_widgets = num_dw;
+
+       return 0;
+}
+
+static int avs_i2s_test_probe(struct platform_device *pdev)
+{
+       struct snd_soc_dapm_widget *widgets;
+       struct snd_soc_dapm_route *routes;
+       struct snd_soc_dai_link *dai_link;
+       struct snd_soc_acpi_mach *mach;
+       struct snd_soc_card *card;
+       struct device *dev = &pdev->dev;
+       const char *pname;
+       int num_routes, num_widgets;
+       int ssp_port, ret;
+
+       mach = dev_get_platdata(dev);
+       pname = mach->mach_params.platform;
+       ssp_port = __ffs(mach->mach_params.i2s_link_mask);
+
+       card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
+       if (!card)
+               return -ENOMEM;
+
+       card->name = devm_kasprintf(dev, GFP_KERNEL, "ssp%d-loopback", ssp_port);
+       if (!card->name)
+               return -ENOMEM;
+
+       ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link);
+       if (ret) {
+               dev_err(dev, "Failed to create dai link: %d\n", ret);
+               return ret;
+       }
+
+       ret = avs_create_dapm_routes(dev, ssp_port, &routes, &num_routes);
+       if (ret) {
+               dev_err(dev, "Failed to create dapm routes: %d\n", ret);
+               return ret;
+       }
+
+       ret = avs_create_dapm_widgets(dev, ssp_port, &widgets, &num_widgets);
+       if (ret) {
+               dev_err(dev, "Failed to create dapm widgets: %d\n", ret);
+               return ret;
+       }
+
+       card->dev = dev;
+       card->owner = THIS_MODULE;
+       card->dai_link = dai_link;
+       card->num_links = 1;
+       card->dapm_routes = routes;
+       card->num_dapm_routes = num_routes;
+       card->dapm_widgets = widgets;
+       card->num_dapm_widgets = num_widgets;
+       card->fully_routed = true;
+
+       ret = snd_soc_fixup_dai_links_platform_name(card, pname);
+       if (ret)
+               return ret;
+
+       return devm_snd_soc_register_card(dev, card);
+}
+
+static struct platform_driver avs_i2s_test_driver = {
+       .probe = avs_i2s_test_probe,
+       .driver = {
+               .name = "avs_i2s_test",
+               .pm = &snd_soc_pm_ops,
+       },
+};
+
+module_platform_driver(avs_i2s_test_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:avs_i2s_test");