avs/boards/da7219.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 //
0003 // Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
0004 //
0005 // Author: Cezary Rojewski <cezary.rojewski@intel.com>
0006 //
0007
0008 #include <linux/module.h>
0009 #include <linux/platform_device.h>
0010 #include <sound/jack.h>
0011 #include <sound/pcm.h>
0012 #include <sound/pcm_params.h>
0013 #include <sound/soc.h>
0014 #include <sound/soc-acpi.h>
0015 #include <sound/soc-dapm.h>
0016 #include <uapi/linux/input-event-codes.h>
0017 #include "../../../codecs/da7219.h"
0018 #include "../../../codecs/da7219-aad.h"
0019
0020 #define DA7219_DAI_NAME     "da7219-hifi"
0021
0022 static const struct snd_kcontrol_new card_controls[] = {
0023     SOC_DAPM_PIN_SWITCH("Headphone Jack"),
0024     SOC_DAPM_PIN_SWITCH("Headset Mic"),
0025 };
0026
0027 static int platform_clock_control(struct snd_soc_dapm_widget *w,
0028                   struct snd_kcontrol *k, int  event)
0029 {
0030     struct snd_soc_dapm_context *dapm = w->dapm;
0031     struct snd_soc_card *card = dapm->card;
0032     struct snd_soc_dai *codec_dai;
0033     int ret = 0;
0034
0035     codec_dai = snd_soc_card_get_codec_dai(card, DA7219_DAI_NAME);
0036     if (!codec_dai) {
0037         dev_err(card->dev, "Codec dai not found. Unable to set/unset codec pll\n");
0038         return -EIO;
0039     }
0040
0041     if (SND_SOC_DAPM_EVENT_OFF(event)) {
0042         ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_MCLK, 0, 0);
0043         if (ret)
0044             dev_err(card->dev, "failed to stop PLL: %d\n", ret);
0045     } else if (SND_SOC_DAPM_EVENT_ON(event)) {
0046         ret = snd_soc_dai_set_pll(codec_dai, 0, DA7219_SYSCLK_PLL_SRM,
0047                       0, DA7219_PLL_FREQ_OUT_98304);
0048         if (ret)
0049             dev_err(card->dev, "failed to start PLL: %d\n", ret);
0050     }
0051
0052     return ret;
0053 }
0054
0055 static const struct snd_soc_dapm_widget card_widgets[] = {
0056     SND_SOC_DAPM_HP("Headphone Jack", NULL),
0057     SND_SOC_DAPM_MIC("Headset Mic", NULL),
0058     SND_SOC_DAPM_SUPPLY("Platform Clock", SND_SOC_NOPM, 0, 0, platform_clock_control,
0059                 SND_SOC_DAPM_POST_PMD | SND_SOC_DAPM_PRE_PMU),
0060 };
0061
0062 static const struct snd_soc_dapm_route card_base_routes[] = {
0063     /* HP jack connectors - unknown if we have jack detection */
0064     {"Headphone Jack", NULL, "HPL"},
0065     {"Headphone Jack", NULL, "HPR"},
0066
0067     {"MIC", NULL, "Headset Mic"},
0068
0069     { "Headphone Jack", NULL, "Platform Clock" },
0070     { "Headset Mic", NULL, "Platform Clock" },
0071 };
0072
0073 static int avs_da7219_codec_init(struct snd_soc_pcm_runtime *runtime)
0074 {
0075     struct snd_soc_component *component = asoc_rtd_to_codec(runtime, 0)->component;
0076     struct snd_soc_card *card = runtime->card;
0077     struct snd_soc_jack *jack;
0078     struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(runtime, 0);
0079     int clk_freq;
0080     int ret;
0081
0082     jack = snd_soc_card_get_drvdata(card);
0083     clk_freq = 19200000;
0084
0085     ret = snd_soc_dai_set_sysclk(codec_dai, DA7219_CLKSRC_MCLK, clk_freq, SND_SOC_CLOCK_IN);
0086     if (ret) {
0087         dev_err(card->dev, "can't set codec sysclk configuration\n");
0088         return ret;
0089     }
0090
0091     /*
0092      * Headset buttons map to the google Reference headset.
0093      * These can be configured by userspace.
0094      */
0095     ret = snd_soc_card_jack_new(card, "Headset Jack",
0096                     SND_JACK_HEADSET | SND_JACK_BTN_0 |
0097                     SND_JACK_BTN_1 | SND_JACK_BTN_2 |
0098                     SND_JACK_BTN_3 | SND_JACK_LINEOUT, jack);
0099     if (ret) {
0100         dev_err(card->dev, "Headset Jack creation failed: %d\n", ret);
0101         return ret;
0102     }
0103
0104     snd_jack_set_key(jack->jack, SND_JACK_BTN_0, KEY_PLAYPAUSE);
0105     snd_jack_set_key(jack->jack, SND_JACK_BTN_1, KEY_VOLUMEUP);
0106     snd_jack_set_key(jack->jack, SND_JACK_BTN_2, KEY_VOLUMEDOWN);
0107     snd_jack_set_key(jack->jack, SND_JACK_BTN_3, KEY_VOICECOMMAND);
0108
0109     da7219_aad_jack_det(component, jack);
0110
0111     return 0;
0112 }
0113
0114 static int avs_create_dai_link(struct device *dev, const char *platform_name, int ssp_port,
0115                    struct snd_soc_dai_link **dai_link)
0116 {
0117     struct snd_soc_dai_link_component *platform;
0118     struct snd_soc_dai_link *dl;
0119
0120     dl = devm_kzalloc(dev, sizeof(*dl), GFP_KERNEL);
0121     platform = devm_kzalloc(dev, sizeof(*platform), GFP_KERNEL);
0122     if (!dl || !platform)
0123         return -ENOMEM;
0124
0125     platform->name = platform_name;
0126
0127     dl->name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d-Codec", ssp_port);
0128     dl->cpus = devm_kzalloc(dev, sizeof(*dl->cpus), GFP_KERNEL);
0129     dl->codecs = devm_kzalloc(dev, sizeof(*dl->codecs), GFP_KERNEL);
0130     if (!dl->name || !dl->cpus || !dl->codecs)
0131         return -ENOMEM;
0132
0133     dl->cpus->dai_name = devm_kasprintf(dev, GFP_KERNEL, "SSP%d Pin", ssp_port);
0134     dl->codecs->name = devm_kasprintf(dev, GFP_KERNEL, "i2c-DLGS7219:00");
0135     dl->codecs->dai_name = devm_kasprintf(dev, GFP_KERNEL, DA7219_DAI_NAME);
0136     if (!dl->cpus->dai_name || !dl->codecs->name || !dl->codecs->dai_name)
0137         return -ENOMEM;
0138
0139     dl->num_cpus = 1;
0140     dl->num_codecs = 1;
0141     dl->platforms = platform;
0142     dl->num_platforms = 1;
0143     dl->id = 0;
0144     dl->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS;
0145     dl->init = avs_da7219_codec_init;
0146     dl->nonatomic = 1;
0147     dl->no_pcm = 1;
0148     dl->dpcm_capture = 1;
0149     dl->dpcm_playback = 1;
0150
0151     *dai_link = dl;
0152
0153     return 0;
0154 }
0155
0156 static int avs_create_dapm_routes(struct device *dev, int ssp_port,
0157                   struct snd_soc_dapm_route **routes, int *num_routes)
0158 {
0159     struct snd_soc_dapm_route *dr;
0160     const int num_base = ARRAY_SIZE(card_base_routes);
0161     const int num_dr = num_base + 2;
0162     int idx;
0163
0164     dr = devm_kcalloc(dev, num_dr, sizeof(*dr), GFP_KERNEL);
0165     if (!dr)
0166         return -ENOMEM;
0167
0168     memcpy(dr, card_base_routes, num_base * sizeof(*dr));
0169
0170     idx = num_base;
0171     dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "Playback");
0172     dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Tx", ssp_port);
0173     if (!dr[idx].sink || !dr[idx].source)
0174         return -ENOMEM;
0175
0176     idx++;
0177     dr[idx].sink = devm_kasprintf(dev, GFP_KERNEL, "ssp%d Rx", ssp_port);
0178     dr[idx].source = devm_kasprintf(dev, GFP_KERNEL, "Capture");
0179     if (!dr[idx].sink || !dr[idx].source)
0180         return -ENOMEM;
0181
0182     *routes = dr;
0183     *num_routes = num_dr;
0184
0185     return 0;
0186 }
0187
0188 static int avs_card_set_jack(struct snd_soc_card *card, struct snd_soc_jack *jack)
0189 {
0190     struct snd_soc_component *component;
0191
0192     for_each_card_components(card, component)
0193         snd_soc_component_set_jack(component, jack, NULL);
0194     return 0;
0195 }
0196
0197 static int avs_card_remove(struct snd_soc_card *card)
0198 {
0199     return avs_card_set_jack(card, NULL);
0200 }
0201
0202 static int avs_card_suspend_pre(struct snd_soc_card *card)
0203 {
0204     return avs_card_set_jack(card, NULL);
0205 }
0206
0207 static int avs_card_resume_post(struct snd_soc_card *card)
0208 {
0209     struct snd_soc_jack *jack = snd_soc_card_get_drvdata(card);
0210
0211     return avs_card_set_jack(card, jack);
0212 }
0213
0214 static int avs_da7219_probe(struct platform_device *pdev)
0215 {
0216     struct snd_soc_dapm_route *routes;
0217     struct snd_soc_dai_link *dai_link;
0218     struct snd_soc_acpi_mach *mach;
0219     struct snd_soc_card *card;
0220     struct snd_soc_jack *jack;
0221     struct device *dev = &pdev->dev;
0222     const char *pname;
0223     int num_routes, ssp_port, ret;
0224
0225     mach = dev_get_platdata(dev);
0226     pname = mach->mach_params.platform;
0227     ssp_port = __ffs(mach->mach_params.i2s_link_mask);
0228
0229     ret = avs_create_dai_link(dev, pname, ssp_port, &dai_link);
0230     if (ret) {
0231         dev_err(dev, "Failed to create dai link: %d", ret);
0232         return ret;
0233     }
0234
0235     ret = avs_create_dapm_routes(dev, ssp_port, &routes, &num_routes);
0236     if (ret) {
0237         dev_err(dev, "Failed to create dapm routes: %d", ret);
0238         return ret;
0239     }
0240
0241     jack = devm_kzalloc(dev, sizeof(*jack), GFP_KERNEL);
0242     card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
0243     if (!jack || !card)
0244         return -ENOMEM;
0245
0246     card->name = "avs_da7219";
0247     card->dev = dev;
0248     card->owner = THIS_MODULE;
0249     card->remove = avs_card_remove;
0250     card->suspend_pre = avs_card_suspend_pre;
0251     card->resume_post = avs_card_resume_post;
0252     card->dai_link = dai_link;
0253     card->num_links = 1;
0254     card->controls = card_controls;
0255     card->num_controls = ARRAY_SIZE(card_controls);
0256     card->dapm_widgets = card_widgets;
0257     card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
0258     card->dapm_routes = routes;
0259     card->num_dapm_routes = num_routes;
0260     card->fully_routed = true;
0261     snd_soc_card_set_drvdata(card, jack);
0262
0263     ret = snd_soc_fixup_dai_links_platform_name(card, pname);
0264     if (ret)
0265         return ret;
0266
0267     return devm_snd_soc_register_card(dev, card);
0268 }
0269
0270 static struct platform_driver avs_da7219_driver = {
0271     .probe = avs_da7219_probe,
0272     .driver = {
0273         .name = "avs_da7219",
0274         .pm = &snd_soc_pm_ops,
0275     },
0276 };
0277
0278 module_platform_driver(avs_da7219_driver);
0279
0280 MODULE_AUTHOR("Cezary Rojewski <cezary.rojewski@intel.com>");
0281 MODULE_LICENSE("GPL");
0282 MODULE_ALIAS("platform:avs_da7219");