#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/gcd.h>
+#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <sound/core.h>
+#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
int fll_fref;
int fll_fout;
+ struct delayed_work mic_work;
+ struct snd_soc_jack *jack;
+
struct regulator_bulk_data supplies[WM8962_NUM_SUPPLIES];
struct notifier_block disable_nb[WM8962_NUM_SUPPLIES];
struct work_struct beep_work;
int beep_rate;
#endif
+
+#ifdef CONFIG_GPIOLIB
+ struct gpio_chip gpio_chip;
+#endif
};
/* We can't use the same notifier block for more than one supply and
SND_SOC_DAPM_INPUT("IN4R"),
SND_SOC_DAPM_INPUT("Beep"),
+SND_SOC_DAPM_MICBIAS("MICBIAS", WM8962_PWR_MGMT_1, 1, 0),
+
SND_SOC_DAPM_SUPPLY("Class G", WM8962_CHARGE_PUMP_B, 0, 1, NULL, 0),
SND_SOC_DAPM_SUPPLY("SYSCLK", WM8962_CLOCKING2, 5, 0, sysclk_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
int clocking2 = 0;
int aif2 = 0;
- /* If the CODEC is powered on we can configure BCLK */
- if (codec->bias_level != SND_SOC_BIAS_OFF) {
- dev_dbg(codec->dev, "Bias is off, can't configure BCLK\n");
- return;
- }
-
if (!wm8962->bclk) {
dev_dbg(codec->dev, "No BCLK rate configured\n");
return;
.symmetric_rates = 1,
};
+static void wm8962_mic_work(struct work_struct *work)
+{
+ struct wm8962_priv *wm8962 = container_of(work,
+ struct wm8962_priv,
+ mic_work.work);
+ struct snd_soc_codec *codec = wm8962->codec;
+ int status = 0;
+ int irq_pol = 0;
+ int reg;
+
+ reg = snd_soc_read(codec, WM8962_ADDITIONAL_CONTROL_4);
+
+ if (reg & WM8962_MICDET_STS) {
+ status |= SND_JACK_MICROPHONE;
+ irq_pol |= WM8962_MICD_IRQ_POL;
+ }
+
+ if (reg & WM8962_MICSHORT_STS) {
+ status |= SND_JACK_BTN_0;
+ irq_pol |= WM8962_MICSCD_IRQ_POL;
+ }
+
+ snd_soc_jack_report(wm8962->jack, status,
+ SND_JACK_MICROPHONE | SND_JACK_BTN_0);
+
+ snd_soc_update_bits(codec, WM8962_MICINT_SOURCE_POL,
+ WM8962_MICSCD_IRQ_POL |
+ WM8962_MICD_IRQ_POL, irq_pol);
+}
+
static irqreturn_t wm8962_irq(int irq, void *data)
{
struct snd_soc_codec *codec = data;
+ struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
int mask;
int active;
if (active & WM8962_TEMP_SHUT_EINT)
dev_crit(codec->dev, "Thermal shutdown\n");
+ if (active & (WM8962_MICSCD_EINT | WM8962_MICD_EINT)) {
+ dev_dbg(codec->dev, "Microphone event detected\n");
+
+ schedule_delayed_work(&wm8962->mic_work,
+ msecs_to_jiffies(250));
+ }
+
/* Acknowledge the interrupts */
snd_soc_write(codec, WM8962_INTERRUPT_STATUS_2, active);
return IRQ_HANDLED;
}
+/**
+ * wm8962_mic_detect - Enable microphone detection via the WM8962 IRQ
+ *
+ * @codec: WM8962 codec
+ * @jack: jack to report detection events on
+ *
+ * Enable microphone detection via IRQ on the WM8962. If GPIOs are
+ * being used to bring out signals to the processor then only platform
+ * data configuration is needed for WM8962 and processor GPIOs should
+ * be configured using snd_soc_jack_add_gpios() instead.
+ *
+ * If no jack is supplied detection will be disabled.
+ */
+int wm8962_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
+{
+ struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
+ int irq_mask, enable;
+
+ wm8962->jack = jack;
+ if (jack) {
+ irq_mask = 0;
+ enable = WM8962_MICDET_ENA;
+ } else {
+ irq_mask = WM8962_MICD_EINT | WM8962_MICSCD_EINT;
+ enable = 0;
+ }
+
+ snd_soc_update_bits(codec, WM8962_INTERRUPT_STATUS_2_MASK,
+ WM8962_MICD_EINT | WM8962_MICSCD_EINT, irq_mask);
+ snd_soc_update_bits(codec, WM8962_ADDITIONAL_CONTROL_4,
+ WM8962_MICDET_ENA, enable);
+
+ /* Send an initial empty report */
+ snd_soc_jack_report(wm8962->jack, 0,
+ SND_JACK_MICROPHONE | SND_JACK_BTN_0);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(wm8962_mic_detect);
+
#ifdef CONFIG_PM
static int wm8962_resume(struct snd_soc_codec *codec)
{
}
#endif
+#ifdef CONFIG_GPIOLIB
+static inline struct wm8962_priv *gpio_to_wm8962(struct gpio_chip *chip)
+{
+ return container_of(chip, struct wm8962_priv, gpio_chip);
+}
+
+static int wm8962_gpio_request(struct gpio_chip *chip, unsigned offset)
+{
+ struct wm8962_priv *wm8962 = gpio_to_wm8962(chip);
+ struct snd_soc_codec *codec = wm8962->codec;
+ int mask = 0;
+ int val;
+
+ /* The WM8962 GPIOs aren't linearly numbered. For simplicity
+ * we export linear numbers and error out if the unsupported
+ * ones are requsted.
+ */
+ switch (offset + 1) {
+ case 2:
+ mask = WM8962_CLKOUT2_SEL_MASK;
+ val = 1 << WM8962_CLKOUT2_SEL_SHIFT;
+ break;
+ case 3:
+ mask = WM8962_CLKOUT3_SEL_MASK;
+ val = 1 << WM8962_CLKOUT3_SEL_SHIFT;
+ break;
+ case 5:
+ case 6:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Some of the GPIOs are behind MFP configuration */
+ if (mask)
+ snd_soc_update_bits(codec, WM8962_ANALOGUE_CLOCKING1,
+ mask, val);
+
+ return 0;
+}
+
+static void wm8962_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ struct wm8962_priv *wm8962 = gpio_to_wm8962(chip);
+ struct snd_soc_codec *codec = wm8962->codec;
+
+ snd_soc_update_bits(codec, WM8962_GPIO_BASE + offset,
+ WM8962_GP2_LVL, value << WM8962_GP2_LVL_SHIFT);
+}
+
+static int wm8962_gpio_direction_out(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct wm8962_priv *wm8962 = gpio_to_wm8962(chip);
+ struct snd_soc_codec *codec = wm8962->codec;
+ int val;
+
+ /* Force function 1 (logic output) */
+ val = (1 << WM8962_GP2_FN_SHIFT) | (value << WM8962_GP2_LVL_SHIFT);
+
+ return snd_soc_update_bits(codec, WM8962_GPIO_BASE + offset,
+ WM8962_GP2_FN_MASK | WM8962_GP2_LVL, val);
+}
+
+static struct gpio_chip wm8962_template_chip = {
+ .label = "wm8962",
+ .owner = THIS_MODULE,
+ .request = wm8962_gpio_request,
+ .direction_output = wm8962_gpio_direction_out,
+ .set = wm8962_gpio_set,
+ .can_sleep = 1,
+};
+
+static void wm8962_init_gpio(struct snd_soc_codec *codec)
+{
+ struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
+ struct wm8962_pdata *pdata = dev_get_platdata(codec->dev);
+ int ret;
+
+ wm8962->gpio_chip = wm8962_template_chip;
+ wm8962->gpio_chip.ngpio = WM8962_MAX_GPIO;
+ wm8962->gpio_chip.dev = codec->dev;
+
+ if (pdata && pdata->gpio_base)
+ wm8962->gpio_chip.base = pdata->gpio_base;
+ else
+ wm8962->gpio_chip.base = -1;
+
+ ret = gpiochip_add(&wm8962->gpio_chip);
+ if (ret != 0)
+ dev_err(codec->dev, "Failed to add GPIOs: %d\n", ret);
+}
+
+static void wm8962_free_gpio(struct snd_soc_codec *codec)
+{
+ struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
+ int ret;
+
+ ret = gpiochip_remove(&wm8962->gpio_chip);
+ if (ret != 0)
+ dev_err(codec->dev, "Failed to remove GPIOs: %d\n", ret);
+}
+#else
+static void wm8962_init_gpio(struct snd_soc_codec *codec)
+{
+}
+
+static void wm8962_free_gpio(struct snd_soc_codec *codec)
+{
+}
+#endif
+
static int wm8962_probe(struct snd_soc_codec *codec)
{
int ret;
int i, trigger, irq_pol;
wm8962->codec = codec;
+ INIT_DELAYED_WORK(&wm8962->mic_work, wm8962_mic_work);
codec->cache_sync = 1;
codec->idle_bias_off = 1;
if (pdata->spk_mono)
wm8962->reg_cache[WM8962_CLASS_D_CONTROL_2]
|= WM8962_SPK_MONO;
+
+ /* Micbias setup, detection enable and detection
+ * threasholds. */
+ if (pdata->mic_cfg)
+ snd_soc_update_bits(codec, WM8962_ADDITIONAL_CONTROL_4,
+ WM8962_MICDET_ENA |
+ WM8962_MICDET_THR_MASK |
+ WM8962_MICSHORT_THR_MASK |
+ WM8962_MICBIAS_LVL,
+ pdata->mic_cfg);
}
/* Latch volume update bits */
wm8962_add_widgets(codec);
wm8962_init_beep(codec);
+ wm8962_init_gpio(codec);
if (i2c->irq) {
if (pdata && pdata->irq_active_low) {
if (i2c->irq)
free_irq(i2c->irq, codec);
+ cancel_delayed_work_sync(&wm8962->mic_work);
+
+ wm8962_free_gpio(codec);
wm8962_free_beep(codec);
for (i = 0; i < ARRAY_SIZE(wm8962->supplies); i++)
regulator_unregister_notifier(wm8962->supplies[i].consumer,
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff