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-rw-r--r--sound/soc/pxa/poodle.c291
1 files changed, 291 insertions, 0 deletions
diff --git a/sound/soc/pxa/poodle.c b/sound/soc/pxa/poodle.c
new file mode 100644
index 000000000..5fdaa477e
--- /dev/null
+++ b/sound/soc/pxa/poodle.c
@@ -0,0 +1,291 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * poodle.c -- SoC audio for Poodle
+ *
+ * Copyright 2005 Wolfson Microelectronics PLC.
+ * Copyright 2005 Openedhand Ltd.
+ *
+ * Authors: Liam Girdwood <lrg@slimlogic.co.uk>
+ * Richard Purdie <richard@openedhand.com>
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/timer.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+
+#include <asm/mach-types.h>
+#include <asm/hardware/locomo.h>
+#include <linux/platform_data/asoc-pxa.h>
+#include <linux/platform_data/asoc-poodle.h>
+
+#include "../codecs/wm8731.h"
+#include "pxa2xx-i2s.h"
+
+#define POODLE_HP 1
+#define POODLE_HP_OFF 0
+#define POODLE_SPK_ON 1
+#define POODLE_SPK_OFF 0
+
+ /* audio clock in Hz - rounded from 12.235MHz */
+#define POODLE_AUDIO_CLOCK 12288000
+
+static int poodle_jack_func;
+static int poodle_spk_func;
+
+static struct poodle_audio_platform_data *poodle_pdata;
+
+static void poodle_ext_control(struct snd_soc_dapm_context *dapm)
+{
+ /* set up jack connection */
+ if (poodle_jack_func == POODLE_HP) {
+ /* set = unmute headphone */
+ locomo_gpio_write(poodle_pdata->locomo_dev,
+ poodle_pdata->gpio_mute_l, 1);
+ locomo_gpio_write(poodle_pdata->locomo_dev,
+ poodle_pdata->gpio_mute_r, 1);
+ snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
+ } else {
+ locomo_gpio_write(poodle_pdata->locomo_dev,
+ poodle_pdata->gpio_mute_l, 0);
+ locomo_gpio_write(poodle_pdata->locomo_dev,
+ poodle_pdata->gpio_mute_r, 0);
+ snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
+ }
+
+ /* set the endpoints to their new connection states */
+ if (poodle_spk_func == POODLE_SPK_ON)
+ snd_soc_dapm_enable_pin(dapm, "Ext Spk");
+ else
+ snd_soc_dapm_disable_pin(dapm, "Ext Spk");
+
+ /* signal a DAPM event */
+ snd_soc_dapm_sync(dapm);
+}
+
+static int poodle_startup(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
+
+ /* check the jack status at stream startup */
+ poodle_ext_control(&rtd->card->dapm);
+
+ return 0;
+}
+
+/* we need to unmute the HP at shutdown as the mute burns power on poodle */
+static void poodle_shutdown(struct snd_pcm_substream *substream)
+{
+ /* set = unmute headphone */
+ locomo_gpio_write(poodle_pdata->locomo_dev,
+ poodle_pdata->gpio_mute_l, 1);
+ locomo_gpio_write(poodle_pdata->locomo_dev,
+ poodle_pdata->gpio_mute_r, 1);
+}
+
+static int poodle_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);
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
+ unsigned int clk = 0;
+ int ret = 0;
+
+ switch (params_rate(params)) {
+ case 8000:
+ case 16000:
+ case 48000:
+ case 96000:
+ clk = 12288000;
+ break;
+ case 11025:
+ case 22050:
+ case 44100:
+ clk = 11289600;
+ break;
+ }
+
+ /* set the codec system clock for DAC and ADC */
+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL, clk,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ /* set the I2S system clock as input (unused) */
+ ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
+ SND_SOC_CLOCK_IN);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static const struct snd_soc_ops poodle_ops = {
+ .startup = poodle_startup,
+ .hw_params = poodle_hw_params,
+ .shutdown = poodle_shutdown,
+};
+
+static int poodle_get_jack(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.enumerated.item[0] = poodle_jack_func;
+ return 0;
+}
+
+static int poodle_set_jack(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
+
+ if (poodle_jack_func == ucontrol->value.enumerated.item[0])
+ return 0;
+
+ poodle_jack_func = ucontrol->value.enumerated.item[0];
+ poodle_ext_control(&card->dapm);
+ return 1;
+}
+
+static int poodle_get_spk(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.enumerated.item[0] = poodle_spk_func;
+ return 0;
+}
+
+static int poodle_set_spk(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
+
+ if (poodle_spk_func == ucontrol->value.enumerated.item[0])
+ return 0;
+
+ poodle_spk_func = ucontrol->value.enumerated.item[0];
+ poodle_ext_control(&card->dapm);
+ return 1;
+}
+
+static int poodle_amp_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *k, int event)
+{
+ if (SND_SOC_DAPM_EVENT_ON(event))
+ locomo_gpio_write(poodle_pdata->locomo_dev,
+ poodle_pdata->gpio_amp_on, 0);
+ else
+ locomo_gpio_write(poodle_pdata->locomo_dev,
+ poodle_pdata->gpio_amp_on, 1);
+
+ return 0;
+}
+
+/* poodle machine dapm widgets */
+static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
+SND_SOC_DAPM_HP("Headphone Jack", NULL),
+SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),
+SND_SOC_DAPM_MIC("Microphone", NULL),
+};
+
+/* Corgi machine connections to the codec pins */
+static const struct snd_soc_dapm_route poodle_audio_map[] = {
+
+ /* headphone connected to LHPOUT1, RHPOUT1 */
+ {"Headphone Jack", NULL, "LHPOUT"},
+ {"Headphone Jack", NULL, "RHPOUT"},
+
+ /* speaker connected to LOUT, ROUT */
+ {"Ext Spk", NULL, "ROUT"},
+ {"Ext Spk", NULL, "LOUT"},
+
+ {"MICIN", NULL, "Microphone"},
+};
+
+static const char * const jack_function[] = {"Off", "Headphone"};
+static const char * const spk_function[] = {"Off", "On"};
+static const struct soc_enum poodle_enum[] = {
+ SOC_ENUM_SINGLE_EXT(2, jack_function),
+ SOC_ENUM_SINGLE_EXT(2, spk_function),
+};
+
+static const struct snd_kcontrol_new wm8731_poodle_controls[] = {
+ SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,
+ poodle_set_jack),
+ SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,
+ poodle_set_spk),
+};
+
+/* poodle digital audio interface glue - connects codec <--> CPU */
+SND_SOC_DAILINK_DEFS(wm8731,
+ DAILINK_COMP_ARRAY(COMP_CPU("pxa2xx-i2s")),
+ DAILINK_COMP_ARRAY(COMP_CODEC("wm8731.0-001b", "wm8731-hifi")),
+ DAILINK_COMP_ARRAY(COMP_PLATFORM("pxa-pcm-audio")));
+
+static struct snd_soc_dai_link poodle_dai = {
+ .name = "WM8731",
+ .stream_name = "WM8731",
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+ .ops = &poodle_ops,
+ SND_SOC_DAILINK_REG(wm8731),
+};
+
+/* poodle audio machine driver */
+static struct snd_soc_card poodle = {
+ .name = "Poodle",
+ .dai_link = &poodle_dai,
+ .num_links = 1,
+ .owner = THIS_MODULE,
+
+ .controls = wm8731_poodle_controls,
+ .num_controls = ARRAY_SIZE(wm8731_poodle_controls),
+ .dapm_widgets = wm8731_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
+ .dapm_routes = poodle_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(poodle_audio_map),
+ .fully_routed = true,
+};
+
+static int poodle_probe(struct platform_device *pdev)
+{
+ struct snd_soc_card *card = &poodle;
+ int ret;
+
+ poodle_pdata = pdev->dev.platform_data;
+ locomo_gpio_set_dir(poodle_pdata->locomo_dev,
+ poodle_pdata->gpio_amp_on, 0);
+ /* should we mute HP at startup - burning power ?*/
+ locomo_gpio_set_dir(poodle_pdata->locomo_dev,
+ poodle_pdata->gpio_mute_l, 0);
+ locomo_gpio_set_dir(poodle_pdata->locomo_dev,
+ poodle_pdata->gpio_mute_r, 0);
+
+ card->dev = &pdev->dev;
+
+ ret = devm_snd_soc_register_card(&pdev->dev, card);
+ if (ret)
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+ ret);
+ return ret;
+}
+
+static struct platform_driver poodle_driver = {
+ .driver = {
+ .name = "poodle-audio",
+ .pm = &snd_soc_pm_ops,
+ },
+ .probe = poodle_probe,
+};
+
+module_platform_driver(poodle_driver);
+
+/* Module information */
+MODULE_AUTHOR("Richard Purdie");
+MODULE_DESCRIPTION("ALSA SoC Poodle");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:poodle-audio");
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