unsigned int sysclk;
struct regmap *regmap;
u8 pin_config[12];
+
+ struct sigmadsp *sigmadsp;
};
static const struct snd_kcontrol_new adau1701_controls[] = {
return 0;
}
-static int adau1701_reset(struct snd_soc_codec *codec, unsigned int clkdiv)
+static int adau1701_reset(struct snd_soc_codec *codec, unsigned int clkdiv,
+ unsigned int rate)
{
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
- struct i2c_client *client = to_i2c_client(codec->dev);
int ret;
+ sigmadsp_reset(adau1701->sigmadsp);
+
if (clkdiv != ADAU1707_CLKDIV_UNSET &&
gpio_is_valid(adau1701->gpio_pll_mode[0]) &&
gpio_is_valid(adau1701->gpio_pll_mode[1])) {
* know the correct PLL setup
*/
if (clkdiv != ADAU1707_CLKDIV_UNSET) {
- ret = process_sigma_firmware(client, ADAU1701_FIRMWARE);
+ ret = sigmadsp_setup(adau1701->sigmadsp, rate);
if (ret) {
dev_warn(codec->dev, "Failed to load firmware\n");
return ret;
* firmware upload.
*/
if (clkdiv != adau1701->pll_clkdiv) {
- ret = adau1701_reset(codec, clkdiv);
+ ret = adau1701_reset(codec, clkdiv, params_rate(params));
if (ret < 0)
return ret;
}
return 0;
}
+static int adau1701_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(dai->codec);
+
+ return sigmadsp_restrict_params(adau1701->sigmadsp, substream);
+}
+
#define ADAU1701_RATES (SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_96000 | \
SNDRV_PCM_RATE_192000)
.set_fmt = adau1701_set_dai_fmt,
.hw_params = adau1701_hw_params,
.digital_mute = adau1701_digital_mute,
+ .startup = adau1701_startup,
};
static struct snd_soc_dai_driver adau1701_dai = {
unsigned int val;
struct adau1701 *adau1701 = snd_soc_codec_get_drvdata(codec);
+ ret = sigmadsp_attach(adau1701->sigmadsp, &codec->component);
+ if (ret)
+ return ret;
+
/*
* Let the pll_clkdiv variable default to something that won't happen
* at runtime. That way, we can postpone the firmware download from
adau1701->pll_clkdiv = ADAU1707_CLKDIV_UNSET;
/* initalize with pre-configured pll mode settings */
- ret = adau1701_reset(codec, adau1701->pll_clkdiv);
+ ret = adau1701_reset(codec, adau1701->pll_clkdiv, 0);
if (ret < 0)
return ret;
adau1701->gpio_pll_mode[1] = gpio_pll_mode[1];
i2c_set_clientdata(client, adau1701);
+
+ adau1701->sigmadsp = devm_sigmadsp_init_i2c(client, NULL,
+ ADAU1701_FIRMWARE);
+ if (IS_ERR(adau1701->sigmadsp))
+ return PTR_ERR(adau1701->sigmadsp);
+
ret = snd_soc_register_codec(&client->dev, &adau1701_codec_drv,
&adau1701_dai, 1);
return ret;
ARRAY_SIZE(adau1761_dapm_routes));
if (ret)
return ret;
-
- ret = adau17x1_load_firmware(adau, codec->dev,
- ADAU1761_FIRMWARE);
- if (ret)
- dev_warn(codec->dev, "Failed to firmware\n");
}
ret = adau17x1_add_routes(codec);
enum adau17x1_type type, void (*switch_mode)(struct device *dev))
{
struct snd_soc_dai_driver *dai_drv;
+ const char *firmware_name;
int ret;
- ret = adau17x1_probe(dev, regmap, type, switch_mode);
- if (ret)
- return ret;
-
- if (type == ADAU1361)
+ if (type == ADAU1361) {
dai_drv = &adau1361_dai_driver;
- else
+ firmware_name = NULL;
+ } else {
dai_drv = &adau1761_dai_driver;
+ firmware_name = ADAU1761_FIRMWARE;
+ }
+
+ ret = adau17x1_probe(dev, regmap, type, switch_mode, firmware_name);
+ if (ret)
+ return ret;
return snd_soc_register_codec(dev, &adau1761_codec_driver, dai_drv, 1);
}
{
struct adau1781_platform_data *pdata = dev_get_platdata(codec->dev);
struct adau *adau = snd_soc_codec_get_drvdata(codec);
- const char *firmware;
int ret;
ret = adau17x1_add_widgets(codec);
return ret;
}
- switch (adau->type) {
- case ADAU1381:
- firmware = ADAU1381_FIRMWARE;
- break;
- case ADAU1781:
- firmware = ADAU1781_FIRMWARE;
- break;
- default:
- return -EINVAL;
- }
-
ret = adau17x1_add_routes(codec);
if (ret < 0)
return ret;
- ret = adau17x1_load_firmware(adau, codec->dev, firmware);
- if (ret)
- dev_warn(codec->dev, "Failed to load firmware\n");
-
return 0;
}
int adau1781_probe(struct device *dev, struct regmap *regmap,
enum adau17x1_type type, void (*switch_mode)(struct device *dev))
{
+ const char *firmware_name;
int ret;
- ret = adau17x1_probe(dev, regmap, type, switch_mode);
+ switch (type) {
+ case ADAU1381:
+ firmware_name = ADAU1381_FIRMWARE;
+ break;
+ case ADAU1781:
+ firmware_name = ADAU1781_FIRMWARE;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = adau17x1_probe(dev, regmap, type, switch_mode, firmware_name);
if (ret)
return ret;
struct adau *adau = snd_soc_codec_get_drvdata(codec);
unsigned int val, div, dsp_div;
unsigned int freq;
+ int ret;
if (adau->clk_src == ADAU17X1_CLK_SRC_PLL)
freq = adau->pll_freq;
regmap_write(adau->regmap, ADAU17X1_DSP_SAMPLING_RATE, dsp_div);
}
+ if (adau->sigmadsp) {
+ ret = adau17x1_setup_firmware(adau, params_rate(params));
+ if (ret < 0)
+ return ret;
+ }
+
if (adau->dai_fmt != SND_SOC_DAIFMT_RIGHT_J)
return 0;
return 0;
}
+static int adau17x1_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct adau *adau = snd_soc_codec_get_drvdata(dai->codec);
+
+ if (adau->sigmadsp)
+ return sigmadsp_restrict_params(adau->sigmadsp, substream);
+
+ return 0;
+}
+
const struct snd_soc_dai_ops adau17x1_dai_ops = {
.hw_params = adau17x1_hw_params,
.set_sysclk = adau17x1_set_dai_sysclk,
.set_fmt = adau17x1_set_dai_fmt,
.set_pll = adau17x1_set_dai_pll,
.set_tdm_slot = adau17x1_set_dai_tdm_slot,
+ .startup = adau17x1_startup,
};
EXPORT_SYMBOL_GPL(adau17x1_dai_ops);
}
EXPORT_SYMBOL_GPL(adau17x1_volatile_register);
-int adau17x1_load_firmware(struct adau *adau, struct device *dev,
- const char *firmware)
+int adau17x1_setup_firmware(struct adau *adau, unsigned int rate)
{
int ret;
int dspsr;
regmap_write(adau->regmap, ADAU17X1_DSP_ENABLE, 1);
regmap_write(adau->regmap, ADAU17X1_DSP_SAMPLING_RATE, 0xf);
- ret = process_sigma_firmware_regmap(dev, adau->regmap, firmware);
+ ret = sigmadsp_setup(adau->sigmadsp, rate);
if (ret) {
regmap_write(adau->regmap, ADAU17X1_DSP_ENABLE, 0);
return ret;
return 0;
}
-EXPORT_SYMBOL_GPL(adau17x1_load_firmware);
+EXPORT_SYMBOL_GPL(adau17x1_setup_firmware);
int adau17x1_add_widgets(struct snd_soc_codec *codec)
{
ret = snd_soc_dapm_new_controls(&codec->dapm,
adau17x1_dsp_dapm_widgets,
ARRAY_SIZE(adau17x1_dsp_dapm_widgets));
+ if (ret)
+ return ret;
+
+ if (!adau->sigmadsp)
+ return 0;
+
+ ret = sigmadsp_attach(adau->sigmadsp, &codec->component);
+ if (ret) {
+ dev_err(codec->dev, "Failed to attach firmware: %d\n",
+ ret);
+ return ret;
+ }
}
- return ret;
+
+ return 0;
}
EXPORT_SYMBOL_GPL(adau17x1_add_widgets);
EXPORT_SYMBOL_GPL(adau17x1_resume);
int adau17x1_probe(struct device *dev, struct regmap *regmap,
- enum adau17x1_type type, void (*switch_mode)(struct device *dev))
+ enum adau17x1_type type, void (*switch_mode)(struct device *dev),
+ const char *firmware_name)
{
struct adau *adau;
dev_set_drvdata(dev, adau);
+ if (firmware_name) {
+ adau->sigmadsp = devm_sigmadsp_init_regmap(dev, regmap, NULL,
+ firmware_name);
+ if (IS_ERR(adau->sigmadsp)) {
+ dev_warn(dev, "Could not find firmware file: %ld\n",
+ PTR_ERR(adau->sigmadsp));
+ adau->sigmadsp = NULL;
+ }
+ }
+
if (switch_mode)
switch_mode(dev);
#include <linux/regmap.h>
#include <linux/platform_data/adau17x1.h>
+#include "sigmadsp.h"
+
enum adau17x1_type {
ADAU1361,
ADAU1761,
bool dsp_bypass[2];
struct regmap *regmap;
+ struct sigmadsp *sigmadsp;
};
int adau17x1_add_widgets(struct snd_soc_codec *codec);
int adau17x1_add_routes(struct snd_soc_codec *codec);
int adau17x1_probe(struct device *dev, struct regmap *regmap,
- enum adau17x1_type type, void (*switch_mode)(struct device *dev));
+ enum adau17x1_type type, void (*switch_mode)(struct device *dev),
+ const char *firmware_name);
int adau17x1_set_micbias_voltage(struct snd_soc_codec *codec,
enum adau17x1_micbias_voltage micbias);
bool adau17x1_readable_register(struct device *dev, unsigned int reg);
extern const struct snd_soc_dai_ops adau17x1_dai_ops;
-int adau17x1_load_firmware(struct adau *adau, struct device *dev,
- const char *firmware);
+int adau17x1_setup_firmware(struct adau *adau, unsigned int rate);
bool adau17x1_has_dsp(struct adau *adau);
#define ADAU17X1_CLOCK_CONTROL 0x4000
* Licensed under the GPL-2 or later.
*/
-#include <linux/i2c.h>
#include <linux/export.h>
+#include <linux/i2c.h>
#include <linux/module.h>
+#include <linux/slab.h>
+#include <asm/unaligned.h>
#include "sigmadsp.h"
-static int sigma_action_write_i2c(void *control_data,
- const struct sigma_action *sa, size_t len)
+static int sigmadsp_write_i2c(void *control_data,
+ unsigned int addr, const uint8_t data[], size_t len)
{
- return i2c_master_send(control_data, (const unsigned char *)&sa->addr,
- len);
+ uint8_t *buf;
+ int ret;
+
+ buf = kzalloc(2 + len, GFP_KERNEL | GFP_DMA);
+ if (!buf)
+ return -ENOMEM;
+
+ put_unaligned_be16(addr, buf);
+ memcpy(buf + 2, data, len);
+
+ ret = i2c_master_send(control_data, buf, len + 2);
+
+ kfree(buf);
+
+ return ret;
}
-int process_sigma_firmware(struct i2c_client *client, const char *name)
+/**
+ * devm_sigmadsp_init_i2c() - Initialize SigmaDSP instance
+ * @client: The parent I2C device
+ * @ops: The sigmadsp_ops to use for this instance
+ * @firmware_name: Name of the firmware file to load
+ *
+ * Allocates a SigmaDSP instance and loads the specified firmware file.
+ *
+ * Returns a pointer to a struct sigmadsp on success, or a PTR_ERR() on error.
+ */
+struct sigmadsp *devm_sigmadsp_init_i2c(struct i2c_client *client,
+ const struct sigmadsp_ops *ops, const char *firmware_name)
{
- struct sigma_firmware ssfw;
+ struct sigmadsp *sigmadsp;
+
+ sigmadsp = devm_sigmadsp_init(&client->dev, ops, firmware_name);
+ if (IS_ERR(sigmadsp))
+ return sigmadsp;
- ssfw.control_data = client;
- ssfw.write = sigma_action_write_i2c;
+ sigmadsp->control_data = client;
+ sigmadsp->write = sigmadsp_write_i2c;
- return _process_sigma_firmware(&client->dev, &ssfw, name);
+ return sigmadsp;
}
-EXPORT_SYMBOL(process_sigma_firmware);
+EXPORT_SYMBOL_GPL(devm_sigmadsp_init_i2c);
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("SigmaDSP I2C firmware loader");
#include "sigmadsp.h"
-static int sigma_action_write_regmap(void *control_data,
- const struct sigma_action *sa, size_t len)
+static int sigmadsp_write_regmap(void *control_data,
+ unsigned int addr, const uint8_t data[], size_t len)
{
- return regmap_raw_write(control_data, be16_to_cpu(sa->addr),
- sa->payload, len - 2);
+ return regmap_raw_write(control_data, addr,
+ data, len);
}
-int process_sigma_firmware_regmap(struct device *dev, struct regmap *regmap,
- const char *name)
+/**
+ * devm_sigmadsp_init_i2c() - Initialize SigmaDSP instance
+ * @dev: The parent device
+ * @regmap: Regmap instance to use
+ * @ops: The sigmadsp_ops to use for this instance
+ * @firmware_name: Name of the firmware file to load
+ *
+ * Allocates a SigmaDSP instance and loads the specified firmware file.
+ *
+ * Returns a pointer to a struct sigmadsp on success, or a PTR_ERR() on error.
+ */
+struct sigmadsp *devm_sigmadsp_init_regmap(struct device *dev,
+ struct regmap *regmap, const struct sigmadsp_ops *ops,
+ const char *firmware_name)
{
- struct sigma_firmware ssfw;
+ struct sigmadsp *sigmadsp;
+
+ sigmadsp = devm_sigmadsp_init(dev, ops, firmware_name);
+ if (IS_ERR(sigmadsp))
+ return sigmadsp;
- ssfw.control_data = regmap;
- ssfw.write = sigma_action_write_regmap;
+ sigmadsp->control_data = regmap;
+ sigmadsp->write = sigmadsp_write_regmap;
- return _process_sigma_firmware(dev, &ssfw, name);
+ return sigmadsp;
}
-EXPORT_SYMBOL(process_sigma_firmware_regmap);
+EXPORT_SYMBOL_GPL(devm_sigmadsp_init_regmap);
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("SigmaDSP regmap firmware loader");
/*
* Load Analog Devices SigmaStudio firmware files
*
- * Copyright 2009-2011 Analog Devices Inc.
+ * Copyright 2009-2014 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/module.h>
+#include <linux/slab.h>
+
+#include <sound/soc.h>
#include "sigmadsp.h"
#define SIGMA_MAGIC "ADISIGM"
+struct sigmadsp_data {
+ struct list_head head;
+ unsigned int addr;
+ unsigned int length;
+ uint8_t data[];
+};
+
struct sigma_firmware_header {
unsigned char magic[7];
u8 version;
SIGMA_ACTION_END,
};
+struct sigma_action {
+ u8 instr;
+ u8 len_hi;
+ __le16 len;
+ __be16 addr;
+ unsigned char payload[];
+} __packed;
+
+static int sigmadsp_write(struct sigmadsp *sigmadsp, unsigned int addr,
+ const uint8_t data[], size_t len)
+{
+ return sigmadsp->write(sigmadsp->control_data, addr, data, len);
+}
+
static inline u32 sigma_action_len(struct sigma_action *sa)
{
return (sa->len_hi << 16) | le16_to_cpu(sa->len);
* Returns a negative error value in case of an error, 0 if processing of
* the firmware should be stopped after this action, 1 otherwise.
*/
-static int
-process_sigma_action(struct sigma_firmware *ssfw, struct sigma_action *sa)
+static int process_sigma_action(struct sigmadsp *sigmadsp,
+ struct sigma_action *sa)
{
size_t len = sigma_action_len(sa);
- int ret;
+ struct sigmadsp_data *data;
pr_debug("%s: instr:%i addr:%#x len:%zu\n", __func__,
sa->instr, sa->addr, len);
case SIGMA_ACTION_WRITEXBYTES:
case SIGMA_ACTION_WRITESINGLE:
case SIGMA_ACTION_WRITESAFELOAD:
- ret = ssfw->write(ssfw->control_data, sa, len);
- if (ret < 0)
+ if (len < 3)
return -EINVAL;
+
+ data = kzalloc(sizeof(*data) + len - 2, GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->addr = be16_to_cpu(sa->addr);
+ data->length = len - 2;
+ memcpy(data->data, sa->payload, data->length);
+ list_add_tail(&data->head, &sigmadsp->data_list);
break;
case SIGMA_ACTION_END:
return 0;
return 1;
}
-static int
-process_sigma_actions(struct sigma_firmware *ssfw)
+static int sigmadsp_fw_load_v1(struct sigmadsp *sigmadsp,
+ const struct firmware *fw)
{
struct sigma_action *sa;
- size_t size;
+ size_t size, pos;
int ret;
- while (ssfw->pos + sizeof(*sa) <= ssfw->fw->size) {
- sa = (struct sigma_action *)(ssfw->fw->data + ssfw->pos);
+ pos = sizeof(struct sigma_firmware_header);
+
+ while (pos + sizeof(*sa) <= fw->size) {
+ sa = (struct sigma_action *)(fw->data + pos);
size = sigma_action_size(sa);
- ssfw->pos += size;
- if (ssfw->pos > ssfw->fw->size || size == 0)
+ pos += size;
+ if (pos > fw->size || size == 0)
break;
- ret = process_sigma_action(ssfw, sa);
+ ret = process_sigma_action(sigmadsp, sa);
pr_debug("%s: action returned %i\n", __func__, ret);
return ret;
}
- if (ssfw->pos != ssfw->fw->size)
+ if (pos != fw->size)
return -EINVAL;
return 0;
}
-int _process_sigma_firmware(struct device *dev,
- struct sigma_firmware *ssfw, const char *name)
+static void sigmadsp_firmware_release(struct sigmadsp *sigmadsp)
{
- int ret;
- struct sigma_firmware_header *ssfw_head;
+ struct sigmadsp_data *data, *_data;
+
+ list_for_each_entry_safe(data, _data, &sigmadsp->data_list, head)
+ kfree(data);
+
+ INIT_LIST_HEAD(&sigmadsp->data_list);
+}
+
+static void devm_sigmadsp_release(struct device *dev, void *res)
+{
+ sigmadsp_firmware_release((struct sigmadsp *)res);
+}
+
+static int sigmadsp_firmware_load(struct sigmadsp *sigmadsp, const char *name)
+{
+ const struct sigma_firmware_header *ssfw_head;
const struct firmware *fw;
+ int ret;
u32 crc;
- pr_debug("%s: loading firmware %s\n", __func__, name);
-
/* first load the blob */
- ret = request_firmware(&fw, name, dev);
+ ret = request_firmware(&fw, name, sigmadsp->dev);
if (ret) {
pr_debug("%s: request_firmware() failed with %i\n", __func__, ret);
- return ret;
+ goto done;
}
- ssfw->fw = fw;
/* then verify the header */
ret = -EINVAL;
* overflows later in the loading process.
*/
if (fw->size < sizeof(*ssfw_head) || fw->size >= 0x4000000) {
- dev_err(dev, "Failed to load firmware: Invalid size\n");
+ dev_err(sigmadsp->dev, "Failed to load firmware: Invalid size\n");
goto done;
}
ssfw_head = (void *)fw->data;
if (memcmp(ssfw_head->magic, SIGMA_MAGIC, ARRAY_SIZE(ssfw_head->magic))) {
- dev_err(dev, "Failed to load firmware: Invalid magic\n");
- goto done;
- }
-
- if (ssfw_head->version != 1) {
- dev_err(dev,
- "Failed to load firmware: Invalid version %d. Supported firmware versions: 1\n",
- ssfw_head->version);
+ dev_err(sigmadsp->dev, "Failed to load firmware: Invalid magic\n");
goto done;
}
fw->size - sizeof(*ssfw_head));
pr_debug("%s: crc=%x\n", __func__, crc);
if (crc != le32_to_cpu(ssfw_head->crc)) {
- dev_err(dev, "Failed to load firmware: Wrong crc checksum: expected %x got %x\n",
+ dev_err(sigmadsp->dev, "Failed to load firmware: Wrong crc checksum: expected %x got %x\n",
le32_to_cpu(ssfw_head->crc), crc);
goto done;
}
- ssfw->pos = sizeof(*ssfw_head);
+ switch (ssfw_head->version) {
+ case 1:
+ ret = sigmadsp_fw_load_v1(sigmadsp, fw);
+ break;
+ default:
+ dev_err(sigmadsp->dev,
+ "Failed to load firmware: Invalid version %d. Supported firmware versions: 1\n",
+ ssfw_head->version);
+ ret = -EINVAL;
+ break;
+ }
- /* finally process all of the actions */
- ret = process_sigma_actions(ssfw);
+ if (ret)
+ sigmadsp_firmware_release(sigmadsp);
- done:
+done:
release_firmware(fw);
- pr_debug("%s: loaded %s\n", __func__, name);
+ return ret;
+}
+
+static int sigmadsp_init(struct sigmadsp *sigmadsp, struct device *dev,
+ const struct sigmadsp_ops *ops, const char *firmware_name)
+{
+ sigmadsp->ops = ops;
+ sigmadsp->dev = dev;
+
+ INIT_LIST_HEAD(&sigmadsp->data_list);
+
+ return sigmadsp_firmware_load(sigmadsp, firmware_name);
+}
+
+/**
+ * devm_sigmadsp_init() - Initialize SigmaDSP instance
+ * @dev: The parent device
+ * @ops: The sigmadsp_ops to use for this instance
+ * @firmware_name: Name of the firmware file to load
+ *
+ * Allocates a SigmaDSP instance and loads the specified firmware file.
+ *
+ * Returns a pointer to a struct sigmadsp on success, or a PTR_ERR() on error.
+ */
+struct sigmadsp *devm_sigmadsp_init(struct device *dev,
+ const struct sigmadsp_ops *ops, const char *firmware_name)
+{
+ struct sigmadsp *sigmadsp;
+ int ret;
+
+ sigmadsp = devres_alloc(devm_sigmadsp_release, sizeof(*sigmadsp),
+ GFP_KERNEL);
+ if (!sigmadsp)
+ return ERR_PTR(-ENOMEM);
+
+ ret = sigmadsp_init(sigmadsp, dev, ops, firmware_name);
+ if (ret) {
+ devres_free(sigmadsp);
+ return ERR_PTR(ret);
+ }
+
+ devres_add(dev, sigmadsp);
+
+ return sigmadsp;
+}
+EXPORT_SYMBOL_GPL(devm_sigmadsp_init);
+
+/**
+ * sigmadsp_attach() - Attach a sigmadsp instance to a ASoC component
+ * @sigmadsp: The sigmadsp instance to attach
+ * @component: The component to attach to
+ *
+ * Typically called in the components probe callback.
+ *
+ * Note, once this function has been called the firmware must not be released
+ * until after the ALSA snd_card that the component belongs to has been
+ * disconnected, even if sigmadsp_attach() returns an error.
+ */
+int sigmadsp_attach(struct sigmadsp *sigmadsp,
+ struct snd_soc_component *component)
+{
+ sigmadsp->component = component;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(sigmadsp_attach);
+
+/**
+ * sigmadsp_setup() - Setup the DSP for the specified samplerate
+ * @sigmadsp: The sigmadsp instance to configure
+ * @samplerate: The samplerate the DSP should be configured for
+ *
+ * Loads the appropriate firmware program and parameter memory (if not already
+ * loaded) and enables the controls for the specified samplerate. Any control
+ * parameter changes that have been made previously will be restored.
+ *
+ * Returns 0 on success, a negative error code otherwise.
+ */
+int sigmadsp_setup(struct sigmadsp *sigmadsp, unsigned int samplerate)
+{
+ struct sigmadsp_data *data;
+ int ret;
+
+ if (sigmadsp->current_samplerate == samplerate)
+ return 0;
+
+ list_for_each_entry(data, &sigmadsp->data_list, head) {
+ ret = sigmadsp_write(sigmadsp, data->addr, data->data,
+ data->length);
+ if (ret)
+ goto err;
+ }
+
+ sigmadsp->current_samplerate = samplerate;
+
+ return 0;
+err:
+ sigmadsp_reset(sigmadsp);
return ret;
}
-EXPORT_SYMBOL_GPL(_process_sigma_firmware);
+EXPORT_SYMBOL_GPL(sigmadsp_setup);
+
+/**
+ * sigmadsp_reset() - Notify the sigmadsp instance that the DSP has been reset
+ * @sigmadsp: The sigmadsp instance to reset
+ *
+ * Should be called whenever the DSP has been reset and parameter and program
+ * memory need to be re-loaded.
+ */
+void sigmadsp_reset(struct sigmadsp *sigmadsp)
+{
+ sigmadsp->current_samplerate = 0;
+}
+EXPORT_SYMBOL_GPL(sigmadsp_reset);
+
+/**
+ * sigmadsp_restrict_params() - Applies DSP firmware specific constraints
+ * @sigmadsp: The sigmadsp instance
+ * @substream: The substream to restrict
+ *
+ * Applies samplerate constraints that may be required by the firmware Should
+ * typically be called from the CODEC/component drivers startup callback.
+ *
+ * Returns 0 on success, a negative error code otherwise.
+ */
+int sigmadsp_restrict_params(struct sigmadsp *sigmadsp,
+ struct snd_pcm_substream *substream)
+{
+ return 0;
+}
+EXPORT_SYMBOL_GPL(sigmadsp_restrict_params);
MODULE_LICENSE("GPL");
#include <linux/device.h>
#include <linux/regmap.h>
+#include <linux/list.h>
-struct sigma_action {
- u8 instr;
- u8 len_hi;
- __le16 len;
- __be16 addr;
- unsigned char payload[];
-} __packed;
+#include <sound/pcm.h>
-struct sigma_firmware {
- const struct firmware *fw;
- size_t pos;
+struct sigmadsp;
+struct snd_soc_component;
+struct snd_pcm_substream;
+
+struct sigmadsp_ops {
+ int (*safeload)(struct sigmadsp *sigmadsp, unsigned int addr,
+ const uint8_t *data, size_t len);
+};
+
+struct sigmadsp {
+ const struct sigmadsp_ops *ops;
+
+ struct list_head data_list;
+
+ unsigned int current_samplerate;
+ struct snd_soc_component *component;
+ struct device *dev;
void *control_data;
- int (*write)(void *control_data, const struct sigma_action *sa,
- size_t len);
+ int (*write)(void *, unsigned int, const uint8_t *, size_t);
};
-int _process_sigma_firmware(struct device *dev,
- struct sigma_firmware *ssfw, const char *name);
+struct sigmadsp *devm_sigmadsp_init(struct device *dev,
+ const struct sigmadsp_ops *ops, const char *firmware_name);
+void sigmadsp_reset(struct sigmadsp *sigmadsp);
+
+int sigmadsp_restrict_params(struct sigmadsp *sigmadsp,
+ struct snd_pcm_substream *substream);
struct i2c_client;
-extern int process_sigma_firmware(struct i2c_client *client, const char *name);
-extern int process_sigma_firmware_regmap(struct device *dev,
- struct regmap *regmap, const char *name);
+struct sigmadsp *devm_sigmadsp_init_regmap(struct device *dev,
+ struct regmap *regmap, const struct sigmadsp_ops *ops,
+ const char *firmware_name);
+struct sigmadsp *devm_sigmadsp_init_i2c(struct i2c_client *client,
+ const struct sigmadsp_ops *ops, const char *firmware_name);
+
+int sigmadsp_attach(struct sigmadsp *sigmadsp,
+ struct snd_soc_component *component);
+int sigmadsp_setup(struct sigmadsp *sigmadsp, unsigned int rate);
+void sigmadsp_reset(struct sigmadsp *sigmadsp);
#endif
projects / cascardo / linux.git / commitdiff