/*
* 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/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)
{
const char *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;
BUG_ON(!list_empty(&xfer_list));
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;
out = kzalloc(len, GFP_KERNEL);
if (!out) {
dev_err(codec->dev,
"Failed to allocate RX buffer\n");
ret = -ENOMEM;
goto abort1;
}
img = kzalloc(len, GFP_KERNEL);
if (!img) {
dev_err(codec->dev,
"Failed to allocate image buffer\n");
ret = -ENOMEM;
goto abort1;
}
byte_swap_64((u64 *)&rec->command, img, len);
xfer = kzalloc(sizeof(*xfer), GFP_KERNEL);
if (!xfer) {
dev_err(codec->dev, "Failed to allocate xfer\n");
ret = -ENOMEM;
goto abort1;
}
xfer->codec = codec;
list_add_tail(&xfer->list, &xfer_list);
spi_message_init(&xfer->m);
xfer->m.complete = wm0010_boot_xfer_complete;
xfer->m.context = xfer;
xfer->t.tx_buf = img;
xfer->t.rx_buf = out;
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);
if (!img) {
dev_err(codec->dev, "Failed to allocate image buffer\n");
ret = -ENOMEM;
goto abort2;
}
out = kzalloc(fw->size, GFP_KERNEL);
if (!out) {
dev_err(codec->dev, "Failed to allocate output buffer\n");
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);
if (!out) {
dev_err(codec->dev,
"Failed to allocate RX buffer\n");
goto abort;
}
img_swap = kzalloc(len, GFP_KERNEL);
if (!img_swap) {
dev_err(codec->dev,
"Failed to allocate image buffer\n");
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)
break;
wm0010->max_spi_freq = pll_clock_map[i].max_pll_spi_speed;
wm0010->pll_clkctrl1 = pll_clock_map[i].pll_clkctrl1;
}
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;
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);
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");