--- /dev/null
+/*
+ * 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/miscdevice.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_codec *codec;
+
+ 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_codec *codec)
+{
+ struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
+ 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_codec *codec;
+ 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_codec *codec = xfer->codec;
+ struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
+ u32 *out32 = xfer->t.rx_buf;
+ int i;
+
+ if (xfer->m.status != 0) {
+ dev_err(codec->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(codec->dev, "%d: %04x\n", i, out32[i]);
+
+ switch (be32_to_cpu(out32[i])) {
+ case 0xe0e0e0e0:
+ dev_err(codec->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(codec->dev,
+ "%d: ROM bootloader running in stage 2\n", i);
+ wm0010_mark_boot_failure(wm0010);
+ break;
+
+ case 0x0fed0000:
+ dev_dbg(codec->dev, "Stage2 loader running\n");
+ break;
+
+ case 0x0fed0007:
+ dev_dbg(codec->dev, "CODE_HDR packet received\n");
+ break;
+
+ case 0x0fed0008:
+ dev_dbg(codec->dev, "CODE_DATA packet received\n");
+ break;
+
+ case 0x0fed0009:
+ dev_dbg(codec->dev, "Download complete\n");
+ break;
+
+ case 0x0fed000c:
+ dev_dbg(codec->dev, "Application start\n");
+ break;
+
+ case 0x0fed000e:
+ dev_dbg(codec->dev, "PLL packet received\n");
+ wm0010->pll_running = true;
+ break;
+
+ case 0x0fed0025:
+ dev_err(codec->dev, "Device reports image too long\n");
+ wm0010_mark_boot_failure(wm0010);
+ break;
+
+ case 0x0fed002c:
+ dev_err(codec->dev, "Device reports bad SPI packet\n");
+ wm0010_mark_boot_failure(wm0010);
+ break;
+
+ case 0x0fed0031:
+ dev_err(codec->dev, "Device reports SPI read overflow\n");
+ wm0010_mark_boot_failure(wm0010);
+ break;
+
+ case 0x0fed0032:
+ dev_err(codec->dev, "Device reports SPI underclock\n");
+ wm0010_mark_boot_failure(wm0010);
+ break;
+
+ case 0x0fed0033:
+ dev_err(codec->dev, "Device reports bad header packet\n");
+ wm0010_mark_boot_failure(wm0010);
+ break;
+
+ case 0x0fed0034:
+ dev_err(codec->dev, "Device reports invalid packet type\n");
+ wm0010_mark_boot_failure(wm0010);
+ break;
+
+ case 0x0fed0035:
+ dev_err(codec->dev, "Device reports data before header error\n");
+ wm0010_mark_boot_failure(wm0010);
+ break;
+
+ case 0x0fed0038:
+ dev_err(codec->dev, "Device reports invalid PLL packet\n");
+ break;
+
+ case 0x0fed003a:
+ dev_err(codec->dev, "Device reports packet alignment error\n");
+ wm0010_mark_boot_failure(wm0010);
+ break;
+
+ default:
+ dev_err(codec->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_codec *codec)
+{
+ struct spi_device *spi = to_spi_device(codec->dev);
+ struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
+ 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, codec->dev);
+ if (ret != 0) {
+ dev_err(codec->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(codec->dev, "First record not INFO\r\n");
+ ret = -EINVAL;
+ goto abort;
+ }
+
+ if (inforec->info_version != INFO_VERSION) {
+ dev_err(codec->dev,
+ "Unsupported version (%02d) of INFO record\r\n",
+ inforec->info_version);
+ ret = -EINVAL;
+ goto abort;
+ }
+
+ dev_dbg(codec->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(codec->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(codec->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->codec = codec;
+ 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(codec->dev, "All transfers scheduled\n");
+ xfer->done = &done;
+ }
+
+ ret = spi_async(spi, &xfer->m);
+ if (ret != 0) {
+ dev_err(codec->dev, "Write failed: %d\n", ret);
+ goto abort1;
+ }
+
+ if (wm0010->boot_failed) {
+ dev_dbg(codec->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_codec *codec)
+{
+ struct spi_device *spi = to_spi_device(codec->dev);
+ struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
+ 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", codec->dev);
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to request stage2 loader: %d\n",
+ ret);
+ return ret;
+ }
+
+ dev_dbg(codec->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(codec->dev, "Starting initial download at %dHz\n",
+ t.speed_hz);
+
+ ret = spi_sync(spi, &m);
+ if (ret != 0) {
+ dev_err(codec->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(codec->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_codec *codec)
+{
+ struct spi_device *spi = to_spi_device(codec->dev);
+ struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
+ unsigned long flags;
+ int ret;
+ const struct firmware *fw;
+ 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(codec->dev, "Max DSP clock frequency is 26MHz\n");
+ ret = -ECANCELED;
+ goto err;
+ }
+
+ mutex_lock(&wm0010->lock);
+ wm0010->pll_running = false;
+
+ dev_dbg(codec->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);
+
+ /* First the bootloader */
+ ret = request_firmware(&fw, "wm0010_stage2.bin", codec->dev);
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to request stage2 loader: %d\n",
+ ret);
+ goto abort;
+ }
+
+ if (!wait_for_completion_timeout(&wm0010->boot_completion,
+ msecs_to_jiffies(20)))
+ dev_err(codec->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(codec);
+ if (ret)
+ goto abort;
+
+ if (!wait_for_completion_timeout(&wm0010->boot_completion,
+ msecs_to_jiffies(20)))
+ dev_err(codec->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) {
+ dev_err(codec->dev,
+ "Failed to allocate RX buffer\n");
+ goto abort;
+ }
+
+ img_swap = kzalloc(len, GFP_KERNEL | GFP_DMA);
+ if (!img_swap)
+ goto abort;
+
+ /* 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 != 0) {
+ dev_err(codec->dev, "First PLL write failed: %d\n", ret);
+ goto abort;
+ }
+
+ /* Use a second send of the message to get the return status */
+ ret = spi_sync(spi, &m);
+ if (ret != 0) {
+ dev_err(codec->dev, "Second PLL write failed: %d\n", ret);
+ goto abort;
+ }
+
+ p = (u32 *)out;
+
+ /* Look for PLL active code from the DSP */
+ for (i = 0; i < len / 4; i++) {
+ if (*p == 0x0e00ed0f) {
+ dev_dbg(codec->dev, "PLL packet received\n");
+ wm0010->pll_running = true;
+ break;
+ }
+ p++;
+ }
+
+ kfree(img_swap);
+ kfree(out);
+ } else
+ dev_dbg(codec->dev, "Not enabling DSP PLL.");
+
+ ret = wm0010_firmware_load("wm0010.dfw", codec);
+
+ 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:
+ /* Put the chip back into reset */
+ wm0010_halt(codec);
+ 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_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ if (codec->dapm.bias_level == SND_SOC_BIAS_PREPARE)
+ wm0010_boot(codec);
+ break;
+ case SND_SOC_BIAS_PREPARE:
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ if (codec->dapm.bias_level == SND_SOC_BIAS_PREPARE) {
+ mutex_lock(&wm0010->lock);
+ wm0010_halt(codec);
+ mutex_unlock(&wm0010->lock);
+ }
+ break;
+ case SND_SOC_BIAS_OFF:
+ break;
+ }
+
+ codec->dapm.bias_level = level;
+
+ return 0;
+}
+
+static int wm0010_set_sysclk(struct snd_soc_codec *codec, int source,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
+ 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_codec *codec);
+
+static struct snd_soc_codec_driver soc_codec_dev_wm0010 = {
+ .probe = wm0010_probe,
+ .set_bias_level = wm0010_set_bias_level,
+ .set_sysclk = wm0010_set_sysclk,
+ .idle_bias_off = true,
+
+ .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),
+};
+
+#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_codec *codec)
+{
+ struct wm0010_priv *wm0010 = snd_soc_codec_get_drvdata(codec);
+
+ wm0010->codec = codec;
+
+ 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 | IRQF_ONESHOT,
+ "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 = snd_soc_register_codec(&spi->dev,
+ &soc_codec_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);
+
+ snd_soc_unregister_codec(&spi->dev);
+
+ 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",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+ .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");
Code Review / kvmfornfv.git / blobdiff