Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1005 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm0010.c b/sound/soc/codecs/wm0010.c
new file mode 100644
index 000000000..abd2defe7
--- /dev/null
+++ b/sound/soc/codecs/wm0010.c
@@ -0,0 +1,1005 @@
+/*
+ * wm0010.c  --  WM0010 DSP Driver
+ *
+ * Copyright 2012 Wolfson Microelectronics PLC.
+ *
+ * Authors: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *          Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
+ *          Scott Ling <sl@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/interrupt.h>
+#include <linux/irqreturn.h>
+#include <linux/init.h>
+#include <linux/spi/spi.h>
+#include <linux/firmware.h>
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+#include <linux/mutex.h>
+#include <linux/workqueue.h>
+
+#include <sound/soc.h>
+#include <sound/wm0010.h>
+
+#define DEVICE_ID_WM0010	10
+
+/* We only support v1 of the .dfw INFO record */
+#define INFO_VERSION		1
+
+enum dfw_cmd {
+	DFW_CMD_FUSE = 0x01,
+	DFW_CMD_CODE_HDR,
+	DFW_CMD_CODE_DATA,
+	DFW_CMD_PLL,
+	DFW_CMD_INFO = 0xff
+};
+
+struct dfw_binrec {
+	u8 command;
+	u32 length:24;
+	u32 address;
+	uint8_t data[0];
+} __packed;
+
+struct dfw_inforec {
+	u8 info_version;
+	u8 tool_major_version;
+	u8 tool_minor_version;
+	u8 dsp_target;
+};
+
+struct dfw_pllrec {
+	u8 command;
+	u32 length:24;
+	u32 address;
+	u32 clkctrl1;
+	u32 clkctrl2;
+	u32 clkctrl3;
+	u32 ldetctrl;
+	u32 uart_div;
+	u32 spi_div;
+} __packed;
+
+static struct pll_clock_map {
+	int max_sysclk;
+	int max_pll_spi_speed;
+	u32 pll_clkctrl1;
+} pll_clock_map[] = {			   /* Dividers */
+	{ 22000000, 26000000, 0x00201f11 }, /* 2,32,2  */
+	{ 18000000, 26000000, 0x00203f21 }, /* 2,64,4  */
+	{ 14000000, 26000000, 0x00202620 }, /* 1,39,4  */
+	{ 10000000, 22000000, 0x00203120 }, /* 1,50,4  */
+	{  6500000, 22000000, 0x00204520 }, /* 1,70,4  */
+	{  5500000, 22000000, 0x00103f10 }, /* 1,64,2  */
+};
+
+enum wm0010_state {
+	WM0010_POWER_OFF,
+	WM0010_OUT_OF_RESET,
+	WM0010_BOOTROM,
+	WM0010_STAGE2,
+	WM0010_FIRMWARE,
+};
+
+struct wm0010_priv {
+	struct snd_soc_component *component;
+
+	struct mutex lock;
+	struct device *dev;
+
+	struct wm0010_pdata pdata;
+
+	int gpio_reset;
+	int gpio_reset_value;
+
+	struct regulator_bulk_data core_supplies[2];
+	struct regulator *dbvdd;
+
+	int sysclk;
+
+	enum wm0010_state state;
+	bool boot_failed;
+	bool ready;
+	bool pll_running;
+	int max_spi_freq;
+	int board_max_spi_speed;
+	u32 pll_clkctrl1;
+
+	spinlock_t irq_lock;
+	int irq;
+
+	struct completion boot_completion;
+};
+
+struct wm0010_spi_msg {
+	struct spi_message m;
+	struct spi_transfer t;
+	u8 *tx_buf;
+	u8 *rx_buf;
+	size_t len;
+};
+
+static const struct snd_soc_dapm_widget wm0010_dapm_widgets[] = {
+SND_SOC_DAPM_SUPPLY("CLKIN",  SND_SOC_NOPM, 0, 0, NULL, 0),
+};
+
+static const struct snd_soc_dapm_route wm0010_dapm_routes[] = {
+	{ "SDI2 Capture", NULL, "SDI1 Playback" },
+	{ "SDI1 Capture", NULL, "SDI2 Playback" },
+
+	{ "SDI1 Capture", NULL, "CLKIN" },
+	{ "SDI2 Capture", NULL, "CLKIN" },
+	{ "SDI1 Playback", NULL, "CLKIN" },
+	{ "SDI2 Playback", NULL, "CLKIN" },
+};
+
+static const char *wm0010_state_to_str(enum wm0010_state state)
+{
+	static const char * const state_to_str[] = {
+		"Power off",
+		"Out of reset",
+		"Boot ROM",
+		"Stage2",
+		"Firmware"
+	};
+
+	if (state < 0 || state >= ARRAY_SIZE(state_to_str))
+		return "null";
+	return state_to_str[state];
+}
+
+/* Called with wm0010->lock held */
+static void wm0010_halt(struct snd_soc_component *component)
+{
+	struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component);
+	unsigned long flags;
+	enum wm0010_state state;
+
+	/* Fetch the wm0010 state */
+	spin_lock_irqsave(&wm0010->irq_lock, flags);
+	state = wm0010->state;
+	spin_unlock_irqrestore(&wm0010->irq_lock, flags);
+
+	switch (state) {
+	case WM0010_POWER_OFF:
+		/* If there's nothing to do, bail out */
+		return;
+	case WM0010_OUT_OF_RESET:
+	case WM0010_BOOTROM:
+	case WM0010_STAGE2:
+	case WM0010_FIRMWARE:
+		/* Remember to put chip back into reset */
+		gpio_set_value_cansleep(wm0010->gpio_reset,
+					wm0010->gpio_reset_value);
+		/* Disable the regulators */
+		regulator_disable(wm0010->dbvdd);
+		regulator_bulk_disable(ARRAY_SIZE(wm0010->core_supplies),
+				       wm0010->core_supplies);
+		break;
+	}
+
+	spin_lock_irqsave(&wm0010->irq_lock, flags);
+	wm0010->state = WM0010_POWER_OFF;
+	spin_unlock_irqrestore(&wm0010->irq_lock, flags);
+}
+
+struct wm0010_boot_xfer {
+	struct list_head list;
+	struct snd_soc_component *component;
+	struct completion *done;
+	struct spi_message m;
+	struct spi_transfer t;
+};
+
+/* Called with wm0010->lock held */
+static void wm0010_mark_boot_failure(struct wm0010_priv *wm0010)
+{
+	enum wm0010_state state;
+	unsigned long flags;
+
+	spin_lock_irqsave(&wm0010->irq_lock, flags);
+	state = wm0010->state;
+	spin_unlock_irqrestore(&wm0010->irq_lock, flags);
+
+	dev_err(wm0010->dev, "Failed to transition from `%s' state to `%s' state\n",
+		wm0010_state_to_str(state), wm0010_state_to_str(state + 1));
+
+	wm0010->boot_failed = true;
+}
+
+static void wm0010_boot_xfer_complete(void *data)
+{
+	struct wm0010_boot_xfer *xfer = data;
+	struct snd_soc_component *component = xfer->component;
+	struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component);
+	u32 *out32 = xfer->t.rx_buf;
+	int i;
+
+	if (xfer->m.status != 0) {
+		dev_err(component->dev, "SPI transfer failed: %d\n",
+			xfer->m.status);
+		wm0010_mark_boot_failure(wm0010);
+		if (xfer->done)
+			complete(xfer->done);
+		return;
+	}
+
+	for (i = 0; i < xfer->t.len / 4; i++) {
+		dev_dbg(component->dev, "%d: %04x\n", i, out32[i]);
+
+		switch (be32_to_cpu(out32[i])) {
+		case 0xe0e0e0e0:
+			dev_err(component->dev,
+				"%d: ROM error reported in stage 2\n", i);
+			wm0010_mark_boot_failure(wm0010);
+			break;
+
+		case 0x55555555:
+			if (wm0010->state < WM0010_STAGE2)
+				break;
+			dev_err(component->dev,
+				"%d: ROM bootloader running in stage 2\n", i);
+			wm0010_mark_boot_failure(wm0010);
+			break;
+
+		case 0x0fed0000:
+			dev_dbg(component->dev, "Stage2 loader running\n");
+			break;
+
+		case 0x0fed0007:
+			dev_dbg(component->dev, "CODE_HDR packet received\n");
+			break;
+
+		case 0x0fed0008:
+			dev_dbg(component->dev, "CODE_DATA packet received\n");
+			break;
+
+		case 0x0fed0009:
+			dev_dbg(component->dev, "Download complete\n");
+			break;
+
+		case 0x0fed000c:
+			dev_dbg(component->dev, "Application start\n");
+			break;
+
+		case 0x0fed000e:
+			dev_dbg(component->dev, "PLL packet received\n");
+			wm0010->pll_running = true;
+			break;
+
+		case 0x0fed0025:
+			dev_err(component->dev, "Device reports image too long\n");
+			wm0010_mark_boot_failure(wm0010);
+			break;
+
+		case 0x0fed002c:
+			dev_err(component->dev, "Device reports bad SPI packet\n");
+			wm0010_mark_boot_failure(wm0010);
+			break;
+
+		case 0x0fed0031:
+			dev_err(component->dev, "Device reports SPI read overflow\n");
+			wm0010_mark_boot_failure(wm0010);
+			break;
+
+		case 0x0fed0032:
+			dev_err(component->dev, "Device reports SPI underclock\n");
+			wm0010_mark_boot_failure(wm0010);
+			break;
+
+		case 0x0fed0033:
+			dev_err(component->dev, "Device reports bad header packet\n");
+			wm0010_mark_boot_failure(wm0010);
+			break;
+
+		case 0x0fed0034:
+			dev_err(component->dev, "Device reports invalid packet type\n");
+			wm0010_mark_boot_failure(wm0010);
+			break;
+
+		case 0x0fed0035:
+			dev_err(component->dev, "Device reports data before header error\n");
+			wm0010_mark_boot_failure(wm0010);
+			break;
+
+		case 0x0fed0038:
+			dev_err(component->dev, "Device reports invalid PLL packet\n");
+			break;
+
+		case 0x0fed003a:
+			dev_err(component->dev, "Device reports packet alignment error\n");
+			wm0010_mark_boot_failure(wm0010);
+			break;
+
+		default:
+			dev_err(component->dev, "Unrecognised return 0x%x\n",
+			    be32_to_cpu(out32[i]));
+			wm0010_mark_boot_failure(wm0010);
+			break;
+		}
+
+		if (wm0010->boot_failed)
+			break;
+	}
+
+	if (xfer->done)
+		complete(xfer->done);
+}
+
+static void byte_swap_64(u64 *data_in, u64 *data_out, u32 len)
+{
+	int i;
+
+	for (i = 0; i < len / 8; i++)
+		data_out[i] = cpu_to_be64(le64_to_cpu(data_in[i]));
+}
+
+static int wm0010_firmware_load(const char *name, struct snd_soc_component *component)
+{
+	struct spi_device *spi = to_spi_device(component->dev);
+	struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component);
+	struct list_head xfer_list;
+	struct wm0010_boot_xfer *xfer;
+	int ret;
+	struct completion done;
+	const struct firmware *fw;
+	const struct dfw_binrec *rec;
+	const struct dfw_inforec *inforec;
+	u64 *img;
+	u8 *out, dsp;
+	u32 len, offset;
+
+	INIT_LIST_HEAD(&xfer_list);
+
+	ret = request_firmware(&fw, name, component->dev);
+	if (ret != 0) {
+		dev_err(component->dev, "Failed to request application(%s): %d\n",
+			name, ret);
+		return ret;
+	}
+
+	rec = (const struct dfw_binrec *)fw->data;
+	inforec = (const struct dfw_inforec *)rec->data;
+	offset = 0;
+	dsp = inforec->dsp_target;
+	wm0010->boot_failed = false;
+	if (WARN_ON(!list_empty(&xfer_list)))
+		return -EINVAL;
+	init_completion(&done);
+
+	/* First record should be INFO */
+	if (rec->command != DFW_CMD_INFO) {
+		dev_err(component->dev, "First record not INFO\r\n");
+		ret = -EINVAL;
+		goto abort;
+	}
+
+	if (inforec->info_version != INFO_VERSION) {
+		dev_err(component->dev,
+			"Unsupported version (%02d) of INFO record\r\n",
+			inforec->info_version);
+		ret = -EINVAL;
+		goto abort;
+	}
+
+	dev_dbg(component->dev, "Version v%02d INFO record found\r\n",
+		inforec->info_version);
+
+	/* Check it's a DSP file */
+	if (dsp != DEVICE_ID_WM0010) {
+		dev_err(component->dev, "Not a WM0010 firmware file.\r\n");
+		ret = -EINVAL;
+		goto abort;
+	}
+
+	/* Skip the info record as we don't need to send it */
+	offset += ((rec->length) + 8);
+	rec = (void *)&rec->data[rec->length];
+
+	while (offset < fw->size) {
+		dev_dbg(component->dev,
+			"Packet: command %d, data length = 0x%x\r\n",
+			rec->command, rec->length);
+		len = rec->length + 8;
+
+		xfer = kzalloc(sizeof(*xfer), GFP_KERNEL);
+		if (!xfer) {
+			ret = -ENOMEM;
+			goto abort;
+		}
+
+		xfer->component = component;
+		list_add_tail(&xfer->list, &xfer_list);
+
+		out = kzalloc(len, GFP_KERNEL | GFP_DMA);
+		if (!out) {
+			ret = -ENOMEM;
+			goto abort1;
+		}
+		xfer->t.rx_buf = out;
+
+		img = kzalloc(len, GFP_KERNEL | GFP_DMA);
+		if (!img) {
+			ret = -ENOMEM;
+			goto abort1;
+		}
+		xfer->t.tx_buf = img;
+
+		byte_swap_64((u64 *)&rec->command, img, len);
+
+		spi_message_init(&xfer->m);
+		xfer->m.complete = wm0010_boot_xfer_complete;
+		xfer->m.context = xfer;
+		xfer->t.len = len;
+		xfer->t.bits_per_word = 8;
+
+		if (!wm0010->pll_running) {
+			xfer->t.speed_hz = wm0010->sysclk / 6;
+		} else {
+			xfer->t.speed_hz = wm0010->max_spi_freq;
+
+			if (wm0010->board_max_spi_speed &&
+			   (wm0010->board_max_spi_speed < wm0010->max_spi_freq))
+					xfer->t.speed_hz = wm0010->board_max_spi_speed;
+		}
+
+		/* Store max usable spi frequency for later use */
+		wm0010->max_spi_freq = xfer->t.speed_hz;
+
+		spi_message_add_tail(&xfer->t, &xfer->m);
+
+		offset += ((rec->length) + 8);
+		rec = (void *)&rec->data[rec->length];
+
+		if (offset >= fw->size) {
+			dev_dbg(component->dev, "All transfers scheduled\n");
+			xfer->done = &done;
+		}
+
+		ret = spi_async(spi, &xfer->m);
+		if (ret != 0) {
+			dev_err(component->dev, "Write failed: %d\n", ret);
+			goto abort1;
+		}
+
+		if (wm0010->boot_failed) {
+			dev_dbg(component->dev, "Boot fail!\n");
+			ret = -EINVAL;
+			goto abort1;
+		}
+	}
+
+	wait_for_completion(&done);
+
+	ret = 0;
+
+abort1:
+	while (!list_empty(&xfer_list)) {
+		xfer = list_first_entry(&xfer_list, struct wm0010_boot_xfer,
+					list);
+		kfree(xfer->t.rx_buf);
+		kfree(xfer->t.tx_buf);
+		list_del(&xfer->list);
+		kfree(xfer);
+	}
+
+abort:
+	release_firmware(fw);
+	return ret;
+}
+
+static int wm0010_stage2_load(struct snd_soc_component *component)
+{
+	struct spi_device *spi = to_spi_device(component->dev);
+	struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component);
+	const struct firmware *fw;
+	struct spi_message m;
+	struct spi_transfer t;
+	u32 *img;
+	u8 *out;
+	int i;
+	int ret = 0;
+
+	ret = request_firmware(&fw, "wm0010_stage2.bin", component->dev);
+	if (ret != 0) {
+		dev_err(component->dev, "Failed to request stage2 loader: %d\n",
+			ret);
+		return ret;
+	}
+
+	dev_dbg(component->dev, "Downloading %zu byte stage 2 loader\n", fw->size);
+
+	/* Copy to local buffer first as vmalloc causes problems for dma */
+	img = kzalloc(fw->size, GFP_KERNEL | GFP_DMA);
+	if (!img) {
+		ret = -ENOMEM;
+		goto abort2;
+	}
+
+	out = kzalloc(fw->size, GFP_KERNEL | GFP_DMA);
+	if (!out) {
+		ret = -ENOMEM;
+		goto abort1;
+	}
+
+	memcpy(img, &fw->data[0], fw->size);
+
+	spi_message_init(&m);
+	memset(&t, 0, sizeof(t));
+	t.rx_buf = out;
+	t.tx_buf = img;
+	t.len = fw->size;
+	t.bits_per_word = 8;
+	t.speed_hz = wm0010->sysclk / 10;
+	spi_message_add_tail(&t, &m);
+
+	dev_dbg(component->dev, "Starting initial download at %dHz\n",
+		t.speed_hz);
+
+	ret = spi_sync(spi, &m);
+	if (ret != 0) {
+		dev_err(component->dev, "Initial download failed: %d\n", ret);
+		goto abort;
+	}
+
+	/* Look for errors from the boot ROM */
+	for (i = 0; i < fw->size; i++) {
+		if (out[i] != 0x55) {
+			dev_err(component->dev, "Boot ROM error: %x in %d\n",
+				out[i], i);
+			wm0010_mark_boot_failure(wm0010);
+			ret = -EBUSY;
+			goto abort;
+		}
+	}
+abort:
+	kfree(out);
+abort1:
+	kfree(img);
+abort2:
+	release_firmware(fw);
+
+	return ret;
+}
+
+static int wm0010_boot(struct snd_soc_component *component)
+{
+	struct spi_device *spi = to_spi_device(component->dev);
+	struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component);
+	unsigned long flags;
+	int ret;
+	struct spi_message m;
+	struct spi_transfer t;
+	struct dfw_pllrec pll_rec;
+	u32 *p, len;
+	u64 *img_swap;
+	u8 *out;
+	int i;
+
+	spin_lock_irqsave(&wm0010->irq_lock, flags);
+	if (wm0010->state != WM0010_POWER_OFF)
+		dev_warn(wm0010->dev, "DSP already powered up!\n");
+	spin_unlock_irqrestore(&wm0010->irq_lock, flags);
+
+	if (wm0010->sysclk > 26000000) {
+		dev_err(component->dev, "Max DSP clock frequency is 26MHz\n");
+		ret = -ECANCELED;
+		goto err;
+	}
+
+	mutex_lock(&wm0010->lock);
+	wm0010->pll_running = false;
+
+	dev_dbg(component->dev, "max_spi_freq: %d\n", wm0010->max_spi_freq);
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(wm0010->core_supplies),
+				    wm0010->core_supplies);
+	if (ret != 0) {
+		dev_err(&spi->dev, "Failed to enable core supplies: %d\n",
+			ret);
+		mutex_unlock(&wm0010->lock);
+		goto err;
+	}
+
+	ret = regulator_enable(wm0010->dbvdd);
+	if (ret != 0) {
+		dev_err(&spi->dev, "Failed to enable DBVDD: %d\n", ret);
+		goto err_core;
+	}
+
+	/* Release reset */
+	gpio_set_value_cansleep(wm0010->gpio_reset, !wm0010->gpio_reset_value);
+	spin_lock_irqsave(&wm0010->irq_lock, flags);
+	wm0010->state = WM0010_OUT_OF_RESET;
+	spin_unlock_irqrestore(&wm0010->irq_lock, flags);
+
+	if (!wait_for_completion_timeout(&wm0010->boot_completion,
+					 msecs_to_jiffies(20)))
+		dev_err(component->dev, "Failed to get interrupt from DSP\n");
+
+	spin_lock_irqsave(&wm0010->irq_lock, flags);
+	wm0010->state = WM0010_BOOTROM;
+	spin_unlock_irqrestore(&wm0010->irq_lock, flags);
+
+	ret = wm0010_stage2_load(component);
+	if (ret)
+		goto abort;
+
+	if (!wait_for_completion_timeout(&wm0010->boot_completion,
+					 msecs_to_jiffies(20)))
+		dev_err(component->dev, "Failed to get interrupt from DSP loader.\n");
+
+	spin_lock_irqsave(&wm0010->irq_lock, flags);
+	wm0010->state = WM0010_STAGE2;
+	spin_unlock_irqrestore(&wm0010->irq_lock, flags);
+
+	/* Only initialise PLL if max_spi_freq initialised */
+	if (wm0010->max_spi_freq) {
+
+		/* Initialise a PLL record */
+		memset(&pll_rec, 0, sizeof(pll_rec));
+		pll_rec.command = DFW_CMD_PLL;
+		pll_rec.length = (sizeof(pll_rec) - 8);
+
+		/* On wm0010 only the CLKCTRL1 value is used */
+		pll_rec.clkctrl1 = wm0010->pll_clkctrl1;
+
+		ret = -ENOMEM;
+		len = pll_rec.length + 8;
+		out = kzalloc(len, GFP_KERNEL | GFP_DMA);
+		if (!out)
+			goto abort;
+
+		img_swap = kzalloc(len, GFP_KERNEL | GFP_DMA);
+		if (!img_swap)
+			goto abort_out;
+
+		/* We need to re-order for 0010 */
+		byte_swap_64((u64 *)&pll_rec, img_swap, len);
+
+		spi_message_init(&m);
+		memset(&t, 0, sizeof(t));
+		t.rx_buf = out;
+		t.tx_buf = img_swap;
+		t.len = len;
+		t.bits_per_word = 8;
+		t.speed_hz = wm0010->sysclk / 6;
+		spi_message_add_tail(&t, &m);
+
+		ret = spi_sync(spi, &m);
+		if (ret) {
+			dev_err(component->dev, "First PLL write failed: %d\n", ret);
+			goto abort_swap;
+		}
+
+		/* Use a second send of the message to get the return status */
+		ret = spi_sync(spi, &m);
+		if (ret) {
+			dev_err(component->dev, "Second PLL write failed: %d\n", ret);
+			goto abort_swap;
+		}
+
+		p = (u32 *)out;
+
+		/* Look for PLL active code from the DSP */
+		for (i = 0; i < len / 4; i++) {
+			if (*p == 0x0e00ed0f) {
+				dev_dbg(component->dev, "PLL packet received\n");
+				wm0010->pll_running = true;
+				break;
+			}
+			p++;
+		}
+
+		kfree(img_swap);
+		kfree(out);
+	} else
+		dev_dbg(component->dev, "Not enabling DSP PLL.");
+
+	ret = wm0010_firmware_load("wm0010.dfw", component);
+
+	if (ret != 0)
+		goto abort;
+
+	spin_lock_irqsave(&wm0010->irq_lock, flags);
+	wm0010->state = WM0010_FIRMWARE;
+	spin_unlock_irqrestore(&wm0010->irq_lock, flags);
+
+	mutex_unlock(&wm0010->lock);
+
+	return 0;
+
+abort_swap:
+	kfree(img_swap);
+abort_out:
+	kfree(out);
+abort:
+	/* Put the chip back into reset */
+	wm0010_halt(component);
+	mutex_unlock(&wm0010->lock);
+	return ret;
+
+err_core:
+	mutex_unlock(&wm0010->lock);
+	regulator_bulk_disable(ARRAY_SIZE(wm0010->core_supplies),
+			       wm0010->core_supplies);
+err:
+	return ret;
+}
+
+static int wm0010_set_bias_level(struct snd_soc_component *component,
+				 enum snd_soc_bias_level level)
+{
+	struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component);
+
+	switch (level) {
+	case SND_SOC_BIAS_ON:
+		if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_PREPARE)
+			wm0010_boot(component);
+		break;
+	case SND_SOC_BIAS_PREPARE:
+		break;
+	case SND_SOC_BIAS_STANDBY:
+		if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_PREPARE) {
+			mutex_lock(&wm0010->lock);
+			wm0010_halt(component);
+			mutex_unlock(&wm0010->lock);
+		}
+		break;
+	case SND_SOC_BIAS_OFF:
+		break;
+	}
+
+	return 0;
+}
+
+static int wm0010_set_sysclk(struct snd_soc_component *component, int source,
+			     int clk_id, unsigned int freq, int dir)
+{
+	struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component);
+	unsigned int i;
+
+	wm0010->sysclk = freq;
+
+	if (freq < pll_clock_map[ARRAY_SIZE(pll_clock_map)-1].max_sysclk) {
+		wm0010->max_spi_freq = 0;
+	} else {
+		for (i = 0; i < ARRAY_SIZE(pll_clock_map); i++)
+			if (freq >= pll_clock_map[i].max_sysclk) {
+				wm0010->max_spi_freq = pll_clock_map[i].max_pll_spi_speed;
+				wm0010->pll_clkctrl1 = pll_clock_map[i].pll_clkctrl1;
+				break;
+			}
+	}
+
+	return 0;
+}
+
+static int wm0010_probe(struct snd_soc_component *component);
+
+static const struct snd_soc_component_driver soc_component_dev_wm0010 = {
+	.probe			= wm0010_probe,
+	.set_bias_level		= wm0010_set_bias_level,
+	.set_sysclk		= wm0010_set_sysclk,
+	.dapm_widgets		= wm0010_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(wm0010_dapm_widgets),
+	.dapm_routes		= wm0010_dapm_routes,
+	.num_dapm_routes	= ARRAY_SIZE(wm0010_dapm_routes),
+	.use_pmdown_time	= 1,
+	.endianness		= 1,
+	.non_legacy_dai_naming	= 1,
+};
+
+#define WM0010_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
+#define WM0010_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |\
+			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE |\
+			SNDRV_PCM_FMTBIT_S32_LE)
+
+static struct snd_soc_dai_driver wm0010_dai[] = {
+	{
+		.name = "wm0010-sdi1",
+		.playback = {
+			.stream_name = "SDI1 Playback",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = WM0010_RATES,
+			.formats = WM0010_FORMATS,
+		},
+		.capture = {
+			 .stream_name = "SDI1 Capture",
+			 .channels_min = 1,
+			 .channels_max = 2,
+			 .rates = WM0010_RATES,
+			 .formats = WM0010_FORMATS,
+		 },
+	},
+	{
+		.name = "wm0010-sdi2",
+		.playback = {
+			.stream_name = "SDI2 Playback",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = WM0010_RATES,
+			.formats = WM0010_FORMATS,
+		},
+		.capture = {
+			 .stream_name = "SDI2 Capture",
+			 .channels_min = 1,
+			 .channels_max = 2,
+			 .rates = WM0010_RATES,
+			 .formats = WM0010_FORMATS,
+		 },
+	},
+};
+
+static irqreturn_t wm0010_irq(int irq, void *data)
+{
+	struct wm0010_priv *wm0010 = data;
+
+	switch (wm0010->state) {
+	case WM0010_OUT_OF_RESET:
+	case WM0010_BOOTROM:
+	case WM0010_STAGE2:
+		spin_lock(&wm0010->irq_lock);
+		complete(&wm0010->boot_completion);
+		spin_unlock(&wm0010->irq_lock);
+		return IRQ_HANDLED;
+	default:
+		return IRQ_NONE;
+	}
+
+	return IRQ_NONE;
+}
+
+static int wm0010_probe(struct snd_soc_component *component)
+{
+	struct wm0010_priv *wm0010 = snd_soc_component_get_drvdata(component);
+
+	wm0010->component = component;
+
+	return 0;
+}
+
+static int wm0010_spi_probe(struct spi_device *spi)
+{
+	unsigned long gpio_flags;
+	int ret;
+	int trigger;
+	int irq;
+	struct wm0010_priv *wm0010;
+
+	wm0010 = devm_kzalloc(&spi->dev, sizeof(*wm0010),
+			      GFP_KERNEL);
+	if (!wm0010)
+		return -ENOMEM;
+
+	mutex_init(&wm0010->lock);
+	spin_lock_init(&wm0010->irq_lock);
+
+	spi_set_drvdata(spi, wm0010);
+	wm0010->dev = &spi->dev;
+
+	if (dev_get_platdata(&spi->dev))
+		memcpy(&wm0010->pdata, dev_get_platdata(&spi->dev),
+		       sizeof(wm0010->pdata));
+
+	init_completion(&wm0010->boot_completion);
+
+	wm0010->core_supplies[0].supply = "AVDD";
+	wm0010->core_supplies[1].supply = "DCVDD";
+	ret = devm_regulator_bulk_get(wm0010->dev, ARRAY_SIZE(wm0010->core_supplies),
+				      wm0010->core_supplies);
+	if (ret != 0) {
+		dev_err(wm0010->dev, "Failed to obtain core supplies: %d\n",
+			ret);
+		return ret;
+	}
+
+	wm0010->dbvdd = devm_regulator_get(wm0010->dev, "DBVDD");
+	if (IS_ERR(wm0010->dbvdd)) {
+		ret = PTR_ERR(wm0010->dbvdd);
+		dev_err(wm0010->dev, "Failed to obtain DBVDD: %d\n", ret);
+		return ret;
+	}
+
+	if (wm0010->pdata.gpio_reset) {
+		wm0010->gpio_reset = wm0010->pdata.gpio_reset;
+
+		if (wm0010->pdata.reset_active_high)
+			wm0010->gpio_reset_value = 1;
+		else
+			wm0010->gpio_reset_value = 0;
+
+		if (wm0010->gpio_reset_value)
+			gpio_flags = GPIOF_OUT_INIT_HIGH;
+		else
+			gpio_flags = GPIOF_OUT_INIT_LOW;
+
+		ret = devm_gpio_request_one(wm0010->dev, wm0010->gpio_reset,
+					    gpio_flags, "wm0010 reset");
+		if (ret < 0) {
+			dev_err(wm0010->dev,
+				"Failed to request GPIO for DSP reset: %d\n",
+				ret);
+			return ret;
+		}
+	} else {
+		dev_err(wm0010->dev, "No reset GPIO configured\n");
+		return -EINVAL;
+	}
+
+	wm0010->state = WM0010_POWER_OFF;
+
+	irq = spi->irq;
+	if (wm0010->pdata.irq_flags)
+		trigger = wm0010->pdata.irq_flags;
+	else
+		trigger = IRQF_TRIGGER_FALLING;
+	trigger |= IRQF_ONESHOT;
+
+	ret = request_threaded_irq(irq, NULL, wm0010_irq, trigger,
+				   "wm0010", wm0010);
+	if (ret) {
+		dev_err(wm0010->dev, "Failed to request IRQ %d: %d\n",
+			irq, ret);
+		return ret;
+	}
+	wm0010->irq = irq;
+
+	ret = irq_set_irq_wake(irq, 1);
+	if (ret) {
+		dev_err(wm0010->dev, "Failed to set IRQ %d as wake source: %d\n",
+			irq, ret);
+		return ret;
+	}
+
+	if (spi->max_speed_hz)
+		wm0010->board_max_spi_speed = spi->max_speed_hz;
+	else
+		wm0010->board_max_spi_speed = 0;
+
+	ret = devm_snd_soc_register_component(&spi->dev,
+				     &soc_component_dev_wm0010, wm0010_dai,
+				     ARRAY_SIZE(wm0010_dai));
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int wm0010_spi_remove(struct spi_device *spi)
+{
+	struct wm0010_priv *wm0010 = spi_get_drvdata(spi);
+
+	gpio_set_value_cansleep(wm0010->gpio_reset,
+				wm0010->gpio_reset_value);
+
+	irq_set_irq_wake(wm0010->irq, 0);
+
+	if (wm0010->irq)
+		free_irq(wm0010->irq, wm0010);
+
+	return 0;
+}
+
+static struct spi_driver wm0010_spi_driver = {
+	.driver = {
+		.name	= "wm0010",
+	},
+	.probe		= wm0010_spi_probe,
+	.remove		= wm0010_spi_remove,
+};
+
+module_spi_driver(wm0010_spi_driver);
+
+MODULE_DESCRIPTION("ASoC WM0010 driver");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");