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-rw-r--r--sound/soc/samsung/littlemill.c347
1 files changed, 347 insertions, 0 deletions
diff --git a/sound/soc/samsung/littlemill.c b/sound/soc/samsung/littlemill.c
new file mode 100644
index 000000000..e73356a66
--- /dev/null
+++ b/sound/soc/samsung/littlemill.c
@@ -0,0 +1,347 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Littlemill audio support
+//
+// Copyright 2011 Wolfson Microelectronics
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/jack.h>
+#include <linux/gpio.h>
+#include <linux/module.h>
+
+#include "../codecs/wm8994.h"
+
+static int sample_rate = 44100;
+
+static int littlemill_set_bias_level(struct snd_soc_card *card,
+ struct snd_soc_dapm_context *dapm,
+ enum snd_soc_bias_level level)
+{
+ struct snd_soc_pcm_runtime *rtd;
+ struct snd_soc_dai *aif1_dai;
+ int ret;
+
+ rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
+ aif1_dai = asoc_rtd_to_codec(rtd, 0);
+
+ if (dapm->dev != aif1_dai->dev)
+ return 0;
+
+ switch (level) {
+ case SND_SOC_BIAS_PREPARE:
+ /*
+ * If we've not already clocked things via hw_params()
+ * then do so now, otherwise these are noops.
+ */
+ if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
+ ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1,
+ WM8994_FLL_SRC_MCLK2, 32768,
+ sample_rate * 512);
+ if (ret < 0) {
+ pr_err("Failed to start FLL: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_sysclk(aif1_dai,
+ WM8994_SYSCLK_FLL1,
+ sample_rate * 512,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ pr_err("Failed to set SYSCLK: %d\n", ret);
+ return ret;
+ }
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int littlemill_set_bias_level_post(struct snd_soc_card *card,
+ struct snd_soc_dapm_context *dapm,
+ enum snd_soc_bias_level level)
+{
+ struct snd_soc_pcm_runtime *rtd;
+ struct snd_soc_dai *aif1_dai;
+ int ret;
+
+ rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
+ aif1_dai = asoc_rtd_to_codec(rtd, 0);
+
+ if (dapm->dev != aif1_dai->dev)
+ return 0;
+
+ switch (level) {
+ case SND_SOC_BIAS_STANDBY:
+ ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
+ 32768, SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ pr_err("Failed to switch away from FLL1: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_pll(aif1_dai, WM8994_FLL1,
+ 0, 0, 0);
+ if (ret < 0) {
+ pr_err("Failed to stop FLL1: %d\n", ret);
+ return ret;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ dapm->bias_level = level;
+
+ return 0;
+}
+
+static int littlemill_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+ struct snd_soc_dai *codec_dai = asoc_rtd_to_codec(rtd, 0);
+ int ret;
+
+ sample_rate = params_rate(params);
+
+ ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1,
+ WM8994_FLL_SRC_MCLK2, 32768,
+ sample_rate * 512);
+ if (ret < 0) {
+ pr_err("Failed to start FLL: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_sysclk(codec_dai,
+ WM8994_SYSCLK_FLL1,
+ sample_rate * 512,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ pr_err("Failed to set SYSCLK: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static struct snd_soc_ops littlemill_ops = {
+ .hw_params = littlemill_hw_params,
+};
+
+static const struct snd_soc_pcm_stream baseband_params = {
+ .formats = SNDRV_PCM_FMTBIT_S32_LE,
+ .rate_min = 8000,
+ .rate_max = 8000,
+ .channels_min = 2,
+ .channels_max = 2,
+};
+
+SND_SOC_DAILINK_DEFS(cpu,
+ DAILINK_COMP_ARRAY(COMP_CPU("samsung-i2s.0")),
+ DAILINK_COMP_ARRAY(COMP_CODEC("wm8994-codec", "wm8994-aif1")),
+ DAILINK_COMP_ARRAY(COMP_PLATFORM("samsung-i2s.0")));
+
+SND_SOC_DAILINK_DEFS(baseband,
+ DAILINK_COMP_ARRAY(COMP_CPU("wm8994-aif2")),
+ DAILINK_COMP_ARRAY(COMP_CODEC("wm1250-ev1.1-0027",
+ "wm1250-ev1")));
+
+static struct snd_soc_dai_link littlemill_dai[] = {
+ {
+ .name = "CPU",
+ .stream_name = "CPU",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBM_CFM,
+ .ops = &littlemill_ops,
+ SND_SOC_DAILINK_REG(cpu),
+ },
+ {
+ .name = "Baseband",
+ .stream_name = "Baseband",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+ | SND_SOC_DAIFMT_CBM_CFM,
+ .ignore_suspend = 1,
+ .params = &baseband_params,
+ SND_SOC_DAILINK_REG(baseband),
+ },
+};
+
+static int bbclk_ev(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_card *card = w->dapm->card;
+ struct snd_soc_pcm_runtime *rtd;
+ struct snd_soc_dai *aif2_dai;
+ int ret;
+
+ rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
+ aif2_dai = asoc_rtd_to_cpu(rtd, 0);
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2,
+ WM8994_FLL_SRC_BCLK, 64 * 8000,
+ 8000 * 256);
+ if (ret < 0) {
+ pr_err("Failed to start FLL: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_FLL2,
+ 8000 * 256,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ pr_err("Failed to set SYSCLK: %d\n", ret);
+ return ret;
+ }
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2,
+ 32768, SND_SOC_CLOCK_IN);
+ if (ret < 0) {
+ pr_err("Failed to switch away from FLL2: %d\n", ret);
+ return ret;
+ }
+
+ ret = snd_soc_dai_set_pll(aif2_dai, WM8994_FLL2,
+ 0, 0, 0);
+ if (ret < 0) {
+ pr_err("Failed to stop FLL2: %d\n", ret);
+ return ret;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new controls[] = {
+ SOC_DAPM_PIN_SWITCH("WM1250 Input"),
+ SOC_DAPM_PIN_SWITCH("WM1250 Output"),
+};
+
+static struct snd_soc_dapm_widget widgets[] = {
+ SND_SOC_DAPM_HP("Headphone", NULL),
+
+ SND_SOC_DAPM_MIC("AMIC", NULL),
+ SND_SOC_DAPM_MIC("DMIC", NULL),
+
+ SND_SOC_DAPM_SUPPLY_S("Baseband Clock", -1, SND_SOC_NOPM, 0, 0,
+ bbclk_ev,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+};
+
+static struct snd_soc_dapm_route audio_paths[] = {
+ { "Headphone", NULL, "HPOUT1L" },
+ { "Headphone", NULL, "HPOUT1R" },
+
+ { "AMIC", NULL, "MICBIAS1" }, /* Default for AMICBIAS jumper */
+ { "IN1LN", NULL, "AMIC" },
+
+ { "DMIC", NULL, "MICBIAS2" }, /* Default for DMICBIAS jumper */
+ { "DMIC1DAT", NULL, "DMIC" },
+ { "DMIC2DAT", NULL, "DMIC" },
+
+ { "AIF2CLK", NULL, "Baseband Clock" },
+};
+
+static struct snd_soc_jack littlemill_headset;
+
+static int littlemill_late_probe(struct snd_soc_card *card)
+{
+ struct snd_soc_pcm_runtime *rtd;
+ struct snd_soc_component *component;
+ struct snd_soc_dai *aif1_dai;
+ struct snd_soc_dai *aif2_dai;
+ int ret;
+
+ rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[0]);
+ component = asoc_rtd_to_codec(rtd, 0)->component;
+ aif1_dai = asoc_rtd_to_codec(rtd, 0);
+
+ rtd = snd_soc_get_pcm_runtime(card, &card->dai_link[1]);
+ aif2_dai = asoc_rtd_to_cpu(rtd, 0);
+
+ ret = snd_soc_dai_set_sysclk(aif1_dai, WM8994_SYSCLK_MCLK2,
+ 32768, SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_dai_set_sysclk(aif2_dai, WM8994_SYSCLK_MCLK2,
+ 32768, SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_card_jack_new(card, "Headset",
+ SND_JACK_HEADSET | SND_JACK_MECHANICAL |
+ SND_JACK_BTN_0 | SND_JACK_BTN_1 |
+ SND_JACK_BTN_2 | SND_JACK_BTN_3 |
+ SND_JACK_BTN_4 | SND_JACK_BTN_5,
+ &littlemill_headset, NULL, 0);
+ if (ret)
+ return ret;
+
+ /* This will check device compatibility itself */
+ wm8958_mic_detect(component, &littlemill_headset, NULL, NULL, NULL, NULL);
+
+ /* As will this */
+ wm8994_mic_detect(component, &littlemill_headset, 1);
+
+ return 0;
+}
+
+static struct snd_soc_card littlemill = {
+ .name = "Littlemill",
+ .owner = THIS_MODULE,
+ .dai_link = littlemill_dai,
+ .num_links = ARRAY_SIZE(littlemill_dai),
+
+ .set_bias_level = littlemill_set_bias_level,
+ .set_bias_level_post = littlemill_set_bias_level_post,
+
+ .controls = controls,
+ .num_controls = ARRAY_SIZE(controls),
+ .dapm_widgets = widgets,
+ .num_dapm_widgets = ARRAY_SIZE(widgets),
+ .dapm_routes = audio_paths,
+ .num_dapm_routes = ARRAY_SIZE(audio_paths),
+
+ .late_probe = littlemill_late_probe,
+};
+
+static int littlemill_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &littlemill;
+ int ret;
+
+ card->dev = &pdev->dev;
+
+ ret = devm_snd_soc_register_card(&pdev->dev, card);
+ if (ret)
+ dev_err_probe(&pdev->dev, ret, "snd_soc_register_card() failed\n");
+
+ return ret;
+}
+
+static struct platform_driver littlemill_driver = {
+ .driver = {
+ .name = "littlemill",
+ .pm = &snd_soc_pm_ops,
+ },
+ .probe = littlemill_probe,
+};
+
+module_platform_driver(littlemill_driver);
+
+MODULE_DESCRIPTION("Littlemill audio support");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:littlemill");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 22:35:54 +0000