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@@ -17,6 +17,7 @@
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#include <linux/delay.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/pm.h>
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#include <linux/gcd.h>
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#include <linux/gcd.h>
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+#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/i2c.h>
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#include <linux/input.h>
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#include <linux/input.h>
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#include <linux/platform_device.h>
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#include <linux/platform_device.h>
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@@ -24,6 +25,7 @@
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#include <linux/slab.h>
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#include <linux/slab.h>
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#include <linux/workqueue.h>
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#include <linux/workqueue.h>
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#include <sound/core.h>
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#include <sound/core.h>
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+#include <sound/jack.h>
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#include <sound/pcm.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/soc.h>
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@@ -62,6 +64,9 @@ struct wm8962_priv {
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int fll_fref;
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int fll_fref;
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int fll_fout;
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int fll_fout;
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+ struct delayed_work mic_work;
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+ struct snd_soc_jack *jack;
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+
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struct regulator_bulk_data supplies[WM8962_NUM_SUPPLIES];
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struct regulator_bulk_data supplies[WM8962_NUM_SUPPLIES];
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struct notifier_block disable_nb[WM8962_NUM_SUPPLIES];
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struct notifier_block disable_nb[WM8962_NUM_SUPPLIES];
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@@ -70,6 +75,10 @@ struct wm8962_priv {
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struct work_struct beep_work;
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struct work_struct beep_work;
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int beep_rate;
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int beep_rate;
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#endif
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#endif
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+
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+#ifdef CONFIG_GPIOLIB
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+ struct gpio_chip gpio_chip;
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+#endif
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};
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};
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/* We can't use the same notifier block for more than one supply and
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/* We can't use the same notifier block for more than one supply and
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@@ -911,12 +920,6 @@ static void wm8962_configure_bclk(struct snd_soc_codec *codec)
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int clocking2 = 0;
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int clocking2 = 0;
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int aif2 = 0;
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int aif2 = 0;
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- /* If the CODEC is powered on we can configure BCLK */
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- if (codec->bias_level != SND_SOC_BIAS_OFF) {
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- dev_dbg(codec->dev, "Bias is off, can't configure BCLK\n");
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- return;
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- }
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-
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if (!wm8962->bclk) {
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if (!wm8962->bclk) {
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dev_dbg(codec->dev, "No BCLK rate configured\n");
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dev_dbg(codec->dev, "No BCLK rate configured\n");
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return;
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return;
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@@ -1463,9 +1466,40 @@ static struct snd_soc_dai_driver wm8962_dai = {
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.symmetric_rates = 1,
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.symmetric_rates = 1,
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};
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};
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+static void wm8962_mic_work(struct work_struct *work)
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+{
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+ struct wm8962_priv *wm8962 = container_of(work,
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+ struct wm8962_priv,
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+ mic_work.work);
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+ struct snd_soc_codec *codec = wm8962->codec;
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+ int status = 0;
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+ int irq_pol = 0;
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+ int reg;
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+
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+ reg = snd_soc_read(codec, WM8962_ADDITIONAL_CONTROL_4);
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+
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+ if (reg & WM8962_MICDET_STS) {
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+ status |= SND_JACK_MICROPHONE;
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+ irq_pol |= WM8962_MICD_IRQ_POL;
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+ }
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+
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+ if (reg & WM8962_MICSHORT_STS) {
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+ status |= SND_JACK_BTN_0;
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+ irq_pol |= WM8962_MICSCD_IRQ_POL;
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+ }
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+
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+ snd_soc_jack_report(wm8962->jack, status,
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+ SND_JACK_MICROPHONE | SND_JACK_BTN_0);
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+
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+ snd_soc_update_bits(codec, WM8962_MICINT_SOURCE_POL,
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+ WM8962_MICSCD_IRQ_POL |
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+ WM8962_MICD_IRQ_POL, irq_pol);
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+}
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+
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static irqreturn_t wm8962_irq(int irq, void *data)
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static irqreturn_t wm8962_irq(int irq, void *data)
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{
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{
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struct snd_soc_codec *codec = data;
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struct snd_soc_codec *codec = data;
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+ struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
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int mask;
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int mask;
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int active;
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int active;
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@@ -1480,12 +1514,59 @@ static irqreturn_t wm8962_irq(int irq, void *data)
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if (active & WM8962_TEMP_SHUT_EINT)
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if (active & WM8962_TEMP_SHUT_EINT)
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dev_crit(codec->dev, "Thermal shutdown\n");
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dev_crit(codec->dev, "Thermal shutdown\n");
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+ if (active & (WM8962_MICSCD_EINT | WM8962_MICD_EINT)) {
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+ dev_dbg(codec->dev, "Microphone event detected\n");
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+
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+ schedule_delayed_work(&wm8962->mic_work,
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+ msecs_to_jiffies(250));
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+ }
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+
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/* Acknowledge the interrupts */
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/* Acknowledge the interrupts */
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snd_soc_write(codec, WM8962_INTERRUPT_STATUS_2, active);
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snd_soc_write(codec, WM8962_INTERRUPT_STATUS_2, active);
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return IRQ_HANDLED;
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return IRQ_HANDLED;
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}
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}
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+/**
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+ * wm8962_mic_detect - Enable microphone detection via the WM8962 IRQ
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+ *
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+ * @codec: WM8962 codec
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+ * @jack: jack to report detection events on
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+ *
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+ * Enable microphone detection via IRQ on the WM8962. If GPIOs are
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+ * being used to bring out signals to the processor then only platform
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+ * data configuration is needed for WM8962 and processor GPIOs should
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+ * be configured using snd_soc_jack_add_gpios() instead.
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+ *
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+ * If no jack is supplied detection will be disabled.
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+ */
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+int wm8962_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
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+{
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+ struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
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+ int irq_mask, enable;
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+
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+ wm8962->jack = jack;
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+ if (jack) {
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+ irq_mask = 0;
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+ enable = WM8962_MICDET_ENA;
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+ } else {
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+ irq_mask = WM8962_MICD_EINT | WM8962_MICSCD_EINT;
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+ enable = 0;
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+ }
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+
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+ snd_soc_update_bits(codec, WM8962_INTERRUPT_STATUS_2_MASK,
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+ WM8962_MICD_EINT | WM8962_MICSCD_EINT, irq_mask);
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+ snd_soc_update_bits(codec, WM8962_ADDITIONAL_CONTROL_4,
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+ WM8962_MICDET_ENA, enable);
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+
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+ /* Send an initial empty report */
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+ snd_soc_jack_report(wm8962->jack, 0,
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+ SND_JACK_MICROPHONE | SND_JACK_BTN_0);
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+
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+ return 0;
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+}
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+EXPORT_SYMBOL_GPL(wm8962_mic_detect);
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+
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#ifdef CONFIG_PM
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#ifdef CONFIG_PM
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static int wm8962_resume(struct snd_soc_codec *codec)
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static int wm8962_resume(struct snd_soc_codec *codec)
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{
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{
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@@ -1652,6 +1733,132 @@ static void wm8962_free_beep(struct snd_soc_codec *codec)
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}
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}
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#endif
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#endif
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+static void wm8962_set_gpio_mode(struct snd_soc_codec *codec, int gpio)
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+{
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+ int mask = 0;
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+ int val = 0;
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+
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+ /* Some of the GPIOs are behind MFP configuration and need to
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+ * be put into GPIO mode. */
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+ switch (gpio) {
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+ case 2:
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+ mask = WM8962_CLKOUT2_SEL_MASK;
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+ val = 1 << WM8962_CLKOUT2_SEL_SHIFT;
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+ break;
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+ case 3:
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+ mask = WM8962_CLKOUT3_SEL_MASK;
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+ val = 1 << WM8962_CLKOUT3_SEL_SHIFT;
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+ break;
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+ default:
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+ break;
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+ }
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+
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+ if (mask)
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+ snd_soc_update_bits(codec, WM8962_ANALOGUE_CLOCKING1,
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+ mask, val);
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+}
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+
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+#ifdef CONFIG_GPIOLIB
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+static inline struct wm8962_priv *gpio_to_wm8962(struct gpio_chip *chip)
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+{
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+ return container_of(chip, struct wm8962_priv, gpio_chip);
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+}
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+
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+static int wm8962_gpio_request(struct gpio_chip *chip, unsigned offset)
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+{
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+ struct wm8962_priv *wm8962 = gpio_to_wm8962(chip);
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+ struct snd_soc_codec *codec = wm8962->codec;
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+
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+ /* The WM8962 GPIOs aren't linearly numbered. For simplicity
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+ * we export linear numbers and error out if the unsupported
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+ * ones are requsted.
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+ */
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+ switch (offset + 1) {
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+ case 2:
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+ case 3:
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+ case 5:
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+ case 6:
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+ break;
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+ default:
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+ return -EINVAL;
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+ }
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+
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+ wm8962_set_gpio_mode(codec, offset + 1);
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+
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+ return 0;
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+}
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+
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+static void wm8962_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
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+{
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+ struct wm8962_priv *wm8962 = gpio_to_wm8962(chip);
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+ struct snd_soc_codec *codec = wm8962->codec;
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+
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+ snd_soc_update_bits(codec, WM8962_GPIO_BASE + offset,
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+ WM8962_GP2_LVL, value << WM8962_GP2_LVL_SHIFT);
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+}
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+
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+static int wm8962_gpio_direction_out(struct gpio_chip *chip,
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+ unsigned offset, int value)
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+{
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+ struct wm8962_priv *wm8962 = gpio_to_wm8962(chip);
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+ struct snd_soc_codec *codec = wm8962->codec;
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+ int val;
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+
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+ /* Force function 1 (logic output) */
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+ val = (1 << WM8962_GP2_FN_SHIFT) | (value << WM8962_GP2_LVL_SHIFT);
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+
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+ return snd_soc_update_bits(codec, WM8962_GPIO_BASE + offset,
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+ WM8962_GP2_FN_MASK | WM8962_GP2_LVL, val);
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+}
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+
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+static struct gpio_chip wm8962_template_chip = {
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+ .label = "wm8962",
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+ .owner = THIS_MODULE,
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+ .request = wm8962_gpio_request,
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+ .direction_output = wm8962_gpio_direction_out,
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+ .set = wm8962_gpio_set,
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+ .can_sleep = 1,
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+};
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+
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+static void wm8962_init_gpio(struct snd_soc_codec *codec)
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+{
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+ struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
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+ struct wm8962_pdata *pdata = dev_get_platdata(codec->dev);
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+ int ret;
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+
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+ wm8962->gpio_chip = wm8962_template_chip;
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+ wm8962->gpio_chip.ngpio = WM8962_MAX_GPIO;
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+ wm8962->gpio_chip.dev = codec->dev;
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+
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+ if (pdata && pdata->gpio_base)
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+ wm8962->gpio_chip.base = pdata->gpio_base;
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+ else
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+ wm8962->gpio_chip.base = -1;
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+
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+ ret = gpiochip_add(&wm8962->gpio_chip);
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+ if (ret != 0)
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+ dev_err(codec->dev, "Failed to add GPIOs: %d\n", ret);
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+}
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+
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+static void wm8962_free_gpio(struct snd_soc_codec *codec)
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+{
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+ struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
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+ int ret;
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+
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+ ret = gpiochip_remove(&wm8962->gpio_chip);
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+ if (ret != 0)
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+ dev_err(codec->dev, "Failed to remove GPIOs: %d\n", ret);
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+}
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+#else
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+static void wm8962_init_gpio(struct snd_soc_codec *codec)
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+{
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+}
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+
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+static void wm8962_free_gpio(struct snd_soc_codec *codec)
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+{
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+}
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+#endif
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+
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static int wm8962_probe(struct snd_soc_codec *codec)
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static int wm8962_probe(struct snd_soc_codec *codec)
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{
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{
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int ret;
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int ret;
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@@ -1662,6 +1869,7 @@ static int wm8962_probe(struct snd_soc_codec *codec)
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int i, trigger, irq_pol;
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int i, trigger, irq_pol;
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wm8962->codec = codec;
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wm8962->codec = codec;
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+ INIT_DELAYED_WORK(&wm8962->mic_work, wm8962_mic_work);
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codec->cache_sync = 1;
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codec->cache_sync = 1;
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codec->idle_bias_off = 1;
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codec->idle_bias_off = 1;
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@@ -1749,9 +1957,11 @@ static int wm8962_probe(struct snd_soc_codec *codec)
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if (pdata) {
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if (pdata) {
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/* Apply static configuration for GPIOs */
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/* Apply static configuration for GPIOs */
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for (i = 0; i < ARRAY_SIZE(pdata->gpio_init); i++)
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for (i = 0; i < ARRAY_SIZE(pdata->gpio_init); i++)
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- if (pdata->gpio_init[i])
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+ if (pdata->gpio_init[i]) {
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+ wm8962_set_gpio_mode(codec, i + 1);
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snd_soc_write(codec, 0x200 + i,
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snd_soc_write(codec, 0x200 + i,
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pdata->gpio_init[i] & 0xffff);
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pdata->gpio_init[i] & 0xffff);
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+ }
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/* Put the speakers into mono mode? */
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/* Put the speakers into mono mode? */
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if (pdata->spk_mono)
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if (pdata->spk_mono)
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@@ -1784,6 +1994,7 @@ static int wm8962_probe(struct snd_soc_codec *codec)
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wm8962_add_widgets(codec);
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wm8962_add_widgets(codec);
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wm8962_init_beep(codec);
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wm8962_init_beep(codec);
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+ wm8962_init_gpio(codec);
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if (i2c->irq) {
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if (i2c->irq) {
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if (pdata && pdata->irq_active_low) {
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if (pdata && pdata->irq_active_low) {
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@@ -1834,6 +2045,9 @@ static int wm8962_remove(struct snd_soc_codec *codec)
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if (i2c->irq)
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if (i2c->irq)
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free_irq(i2c->irq, codec);
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free_irq(i2c->irq, codec);
|
|
|
|
|
|
|
|
+ cancel_delayed_work_sync(&wm8962->mic_work);
|
|
|
|
+
|
|
|
|
+ wm8962_free_gpio(codec);
|
|
wm8962_free_beep(codec);
|
|
wm8962_free_beep(codec);
|
|
for (i = 0; i < ARRAY_SIZE(wm8962->supplies); i++)
|
|
for (i = 0; i < ARRAY_SIZE(wm8962->supplies); i++)
|
|
regulator_unregister_notifier(wm8962->supplies[i].consumer,
|
|
regulator_unregister_notifier(wm8962->supplies[i].consumer,
|