// SPDX-License-Identifier: GPL-2.0
/*
- * Driver for ChromeOS Embedded Controller codec.
+ * Copyright 2019 Google, Inc.
+ *
+ * ChromeOS Embedded Controller codec driver.
*
* This driver uses the cros-ec interface to communicate with the ChromeOS
* EC for audio function.
*/
+#include <crypto/hash.h>
+#include <crypto/sha.h>
+#include <linux/acpi.h>
#include <linux/delay.h>
#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/jiffies.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
#include <linux/platform_data/cros_ec_commands.h>
#include <linux/platform_data/cros_ec_proto.h>
#include <linux/platform_device.h>
#include <sound/soc.h>
#include <sound/tlv.h>
-#define DRV_NAME "cros-ec-codec"
-
-/**
- * struct cros_ec_codec_data - ChromeOS EC codec driver data.
- * @dev: Device structure used in sysfs.
- * @ec_device: cros_ec_device structure to talk to the physical device.
- * @component: Pointer to the component.
- * @max_dmic_gain: Maximum gain in dB supported by EC codec.
- */
-struct cros_ec_codec_data {
+struct cros_ec_codec_priv {
struct device *dev;
struct cros_ec_device *ec_device;
- struct snd_soc_component *component;
- unsigned int max_dmic_gain;
+
+ /* common */
+ uint32_t ec_capabilities;
+
+ uint64_t ec_shm_addr;
+ uint32_t ec_shm_len;
+
+ uint64_t ap_shm_phys_addr;
+ uint32_t ap_shm_len;
+ uint64_t ap_shm_addr;
+ uint64_t ap_shm_last_alloc;
+
+ /* DMIC */
+ atomic_t dmic_probed;
+
+ /* WoV */
+ bool wov_enabled;
+ uint8_t *wov_audio_shm_p;
+ uint32_t wov_audio_shm_len;
+ uint8_t wov_audio_shm_type;
+ uint8_t *wov_lang_shm_p;
+ uint32_t wov_lang_shm_len;
+ uint8_t wov_lang_shm_type;
+
+ struct mutex wov_dma_lock;
+ uint8_t wov_buf[64000];
+ uint32_t wov_rp, wov_wp;
+ size_t wov_dma_offset;
+ bool wov_burst_read;
+ struct snd_pcm_substream *wov_substream;
+ struct delayed_work wov_copy_work;
+ struct notifier_block wov_notifier;
};
-static const DECLARE_TLV_DB_SCALE(ec_mic_gain_tlv, 0, 100, 0);
+static int ec_codec_capable(struct cros_ec_codec_priv *priv, uint8_t cap)
+{
+ return priv->ec_capabilities & BIT(cap);
+}
-static int ec_command_get_gain(struct snd_soc_component *component,
- struct ec_param_codec_i2s *param,
- struct ec_codec_i2s_gain *resp)
+static int send_ec_host_command(struct cros_ec_device *ec_dev, uint32_t cmd,
+ uint8_t *out, size_t outsize,
+ uint8_t *in, size_t insize)
{
- struct cros_ec_codec_data *codec_data =
- snd_soc_component_get_drvdata(component);
- struct cros_ec_device *ec_device = codec_data->ec_device;
- u8 buffer[sizeof(struct cros_ec_command) +
- max(sizeof(struct ec_param_codec_i2s),
- sizeof(struct ec_codec_i2s_gain))];
- struct cros_ec_command *msg = (struct cros_ec_command *)&buffer;
int ret;
+ struct cros_ec_command *msg;
+
+ msg = kmalloc(sizeof(*msg) + max(outsize, insize), GFP_KERNEL);
+ if (!msg)
+ return -ENOMEM;
msg->version = 0;
- msg->command = EC_CMD_CODEC_I2S;
- msg->outsize = sizeof(struct ec_param_codec_i2s);
- msg->insize = sizeof(struct ec_codec_i2s_gain);
+ msg->command = cmd;
+ msg->outsize = outsize;
+ msg->insize = insize;
- memcpy(msg->data, param, msg->outsize);
+ if (outsize)
+ memcpy(msg->data, out, outsize);
- ret = cros_ec_cmd_xfer_status(ec_device, msg);
- if (ret > 0)
- memcpy(resp, msg->data, msg->insize);
+ ret = cros_ec_cmd_xfer_status(ec_dev, msg);
+ if (ret < 0)
+ goto error;
+
+ if (insize)
+ memcpy(in, msg->data, insize);
+ ret = 0;
+error:
+ kfree(msg);
return ret;
}
-/*
- * Wrapper for EC command without response.
- */
-static int ec_command_no_resp(struct snd_soc_component *component,
- struct ec_param_codec_i2s *param)
+static int calculate_sha256(struct cros_ec_codec_priv *priv,
+ uint8_t *buf, uint32_t size, uint8_t *digest)
{
- struct cros_ec_codec_data *codec_data =
+ struct crypto_shash *tfm;
+
+ tfm = crypto_alloc_shash("sha256", CRYPTO_ALG_TYPE_SHASH, 0);
+ if (IS_ERR(tfm)) {
+ dev_err(priv->dev, "can't alloc shash\n");
+ return PTR_ERR(tfm);
+ }
+
+ {
+ SHASH_DESC_ON_STACK(desc, tfm);
+
+ desc->tfm = tfm;
+
+ crypto_shash_digest(desc, buf, size, digest);
+ shash_desc_zero(desc);
+ }
+
+ crypto_free_shash(tfm);
+
+#ifdef DEBUG
+ {
+ char digest_str[65];
+
+ bin2hex(digest_str, digest, 32);
+ digest_str[64] = 0;
+ dev_dbg(priv->dev, "hash=%s\n", digest_str);
+ }
+#endif
+
+ return 0;
+}
+
+static int dmic_get_gain(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component =
+ snd_soc_kcontrol_component(kcontrol);
+ struct cros_ec_codec_priv *priv =
snd_soc_component_get_drvdata(component);
- struct cros_ec_device *ec_device = codec_data->ec_device;
- u8 buffer[sizeof(struct cros_ec_command) +
- sizeof(struct ec_param_codec_i2s)];
- struct cros_ec_command *msg = (struct cros_ec_command *)&buffer;
+ struct ec_param_ec_codec_dmic p;
+ struct ec_response_ec_codec_dmic_get_gain_idx r;
+ int ret;
- msg->version = 0;
- msg->command = EC_CMD_CODEC_I2S;
- msg->outsize = sizeof(struct ec_param_codec_i2s);
- msg->insize = 0;
+ p.cmd = EC_CODEC_DMIC_GET_GAIN_IDX;
+ p.get_gain_idx_param.channel = EC_CODEC_DMIC_CHANNEL_0;
+ ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_DMIC,
+ (uint8_t *)&p, sizeof(p),
+ (uint8_t *)&r, sizeof(r));
+ if (ret < 0)
+ return ret;
+ ucontrol->value.integer.value[0] = r.gain;
+
+ p.cmd = EC_CODEC_DMIC_GET_GAIN_IDX;
+ p.get_gain_idx_param.channel = EC_CODEC_DMIC_CHANNEL_1;
+ ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_DMIC,
+ (uint8_t *)&p, sizeof(p),
+ (uint8_t *)&r, sizeof(r));
+ if (ret < 0)
+ return ret;
+ ucontrol->value.integer.value[1] = r.gain;
+
+ return 0;
+}
+
+static int dmic_put_gain(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component =
+ snd_soc_kcontrol_component(kcontrol);
+ struct cros_ec_codec_priv *priv =
+ snd_soc_component_get_drvdata(component);
+ struct soc_mixer_control *control =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ int max_dmic_gain = control->max;
+ int left = ucontrol->value.integer.value[0];
+ int right = ucontrol->value.integer.value[1];
+ struct ec_param_ec_codec_dmic p;
+ int ret;
+
+ if (left > max_dmic_gain || right > max_dmic_gain)
+ return -EINVAL;
+
+ dev_dbg(component->dev, "set mic gain to %u, %u\n", left, right);
+
+ p.cmd = EC_CODEC_DMIC_SET_GAIN_IDX;
+ p.set_gain_idx_param.channel = EC_CODEC_DMIC_CHANNEL_0;
+ p.set_gain_idx_param.gain = left;
+ ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_DMIC,
+ (uint8_t *)&p, sizeof(p), NULL, 0);
+ if (ret < 0)
+ return ret;
+
+ p.cmd = EC_CODEC_DMIC_SET_GAIN_IDX;
+ p.set_gain_idx_param.channel = EC_CODEC_DMIC_CHANNEL_1;
+ p.set_gain_idx_param.gain = right;
+ return send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_DMIC,
+ (uint8_t *)&p, sizeof(p), NULL, 0);
+}
+
+static const DECLARE_TLV_DB_SCALE(dmic_gain_tlv, 0, 100, 0);
+
+enum {
+ DMIC_CTL_GAIN = 0,
+};
+
+static struct snd_kcontrol_new dmic_controls[] = {
+ [DMIC_CTL_GAIN] =
+ SOC_DOUBLE_EXT_TLV("EC Mic Gain", SND_SOC_NOPM, SND_SOC_NOPM,
+ 0, 0, 0, dmic_get_gain, dmic_put_gain,
+ dmic_gain_tlv),
+};
+
+static int dmic_probe(struct snd_soc_component *component)
+{
+ struct cros_ec_codec_priv *priv =
+ snd_soc_component_get_drvdata(component);
+ struct device *dev = priv->dev;
+ struct soc_mixer_control *control;
+ struct ec_param_ec_codec_dmic p;
+ struct ec_response_ec_codec_dmic_get_max_gain r;
+ int ret;
- memcpy(msg->data, param, msg->outsize);
+ if (!atomic_add_unless(&priv->dmic_probed, 1, 1))
+ return 0;
- return cros_ec_cmd_xfer_status(ec_device, msg);
+ p.cmd = EC_CODEC_DMIC_GET_MAX_GAIN;
+
+ ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_DMIC,
+ (uint8_t *)&p, sizeof(p),
+ (uint8_t *)&r, sizeof(r));
+ if (ret < 0) {
+ dev_warn(dev, "get_max_gain() unsupported\n");
+ return 0;
+ }
+
+ dev_dbg(dev, "max gain = %d\n", r.max_gain);
+
+ control = (struct soc_mixer_control *)
+ dmic_controls[DMIC_CTL_GAIN].private_value;
+ control->max = r.max_gain;
+ control->platform_max = r.max_gain;
+
+ return snd_soc_add_component_controls(component,
+ &dmic_controls[DMIC_CTL_GAIN], 1);
}
-static int set_i2s_config(struct snd_soc_component *component,
- enum ec_i2s_config i2s_config)
+static int i2s_rx_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
{
- struct ec_param_codec_i2s param;
+ struct snd_soc_component *component = dai->component;
+ struct cros_ec_codec_priv *priv =
+ snd_soc_component_get_drvdata(component);
+ struct ec_param_ec_codec_i2s_rx p;
+ enum ec_codec_i2s_rx_sample_depth depth;
+ int ret;
- dev_dbg(component->dev, "%s set I2S format to %u\n", __func__,
- i2s_config);
+ if (params_rate(params) != 48000)
+ return -EINVAL;
- param.cmd = EC_CODEC_I2S_SET_CONFIG;
- param.i2s_config = i2s_config;
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ depth = EC_CODEC_I2S_RX_SAMPLE_DEPTH_16;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ depth = EC_CODEC_I2S_RX_SAMPLE_DEPTH_24;
+ break;
+ default:
+ return -EINVAL;
+ }
- return ec_command_no_resp(component, ¶m);
+ dev_dbg(component->dev, "set depth to %u\n", depth);
+
+ p.cmd = EC_CODEC_I2S_RX_SET_SAMPLE_DEPTH;
+ p.set_sample_depth_param.depth = depth;
+ ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_I2S_RX,
+ (uint8_t *)&p, sizeof(p), NULL, 0);
+ if (ret < 0)
+ return ret;
+
+ dev_dbg(component->dev, "set bclk to %u\n",
+ snd_soc_params_to_bclk(params));
+
+ p.cmd = EC_CODEC_I2S_RX_SET_BCLK;
+ p.set_bclk_param.bclk = snd_soc_params_to_bclk(params);
+ return send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_I2S_RX,
+ (uint8_t *)&p, sizeof(p), NULL, 0);
}
-static int cros_ec_i2s_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+static int i2s_rx_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_component *component = dai->component;
- enum ec_i2s_config i2s_config;
+ struct cros_ec_codec_priv *priv =
+ snd_soc_component_get_drvdata(component);
+ struct ec_param_ec_codec_i2s_rx p;
+ enum ec_codec_i2s_rx_daifmt daifmt;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
- i2s_config = EC_DAI_FMT_I2S;
+ daifmt = EC_CODEC_I2S_RX_DAIFMT_I2S;
break;
-
case SND_SOC_DAIFMT_RIGHT_J:
- i2s_config = EC_DAI_FMT_RIGHT_J;
+ daifmt = EC_CODEC_I2S_RX_DAIFMT_RIGHT_J;
break;
-
case SND_SOC_DAIFMT_LEFT_J:
- i2s_config = EC_DAI_FMT_LEFT_J;
+ daifmt = EC_CODEC_I2S_RX_DAIFMT_LEFT_J;
break;
+ default:
+ return -EINVAL;
+ }
- case SND_SOC_DAIFMT_DSP_A:
- i2s_config = EC_DAI_FMT_PCM_A;
- break;
+ dev_dbg(component->dev, "set format to %u\n", daifmt);
- case SND_SOC_DAIFMT_DSP_B:
- i2s_config = EC_DAI_FMT_PCM_B;
- break;
+ p.cmd = EC_CODEC_I2S_RX_SET_DAIFMT;
+ p.set_daifmt_param.daifmt = daifmt;
+ return send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_I2S_RX,
+ (uint8_t *)&p, sizeof(p), NULL, 0);
+}
+
+static const struct snd_soc_dai_ops i2s_rx_dai_ops = {
+ .hw_params = i2s_rx_hw_params,
+ .set_fmt = i2s_rx_set_fmt,
+};
+
+static int i2s_rx_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component =
+ snd_soc_dapm_to_component(w->dapm);
+ struct cros_ec_codec_priv *priv =
+ snd_soc_component_get_drvdata(component);
+ struct ec_param_ec_codec_i2s_rx p;
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ dev_dbg(component->dev, "enable I2S RX\n");
+ p.cmd = EC_CODEC_I2S_RX_ENABLE;
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ dev_dbg(component->dev, "disable I2S RX\n");
+ p.cmd = EC_CODEC_I2S_RX_DISABLE;
+ break;
default:
- return -EINVAL;
+ return 0;
}
- return set_i2s_config(component, i2s_config);
+ return send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_I2S_RX,
+ (uint8_t *)&p, sizeof(p), NULL, 0);
}
-static int set_i2s_sample_depth(struct snd_soc_component *component,
- enum ec_sample_depth_value depth)
+static struct snd_soc_dapm_widget i2s_rx_dapm_widgets[] = {
+ SND_SOC_DAPM_INPUT("DMIC"),
+ SND_SOC_DAPM_SUPPLY("I2S RX Enable", SND_SOC_NOPM, 0, 0, i2s_rx_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD),
+ SND_SOC_DAPM_AIF_OUT("I2S RX", "I2S Capture", 0, SND_SOC_NOPM, 0, 0),
+};
+
+static struct snd_soc_dapm_route i2s_rx_dapm_routes[] = {
+ {"I2S RX", NULL, "DMIC"},
+ {"I2S RX", NULL, "I2S RX Enable"},
+};
+
+static struct snd_soc_dai_driver i2s_rx_dai_driver = {
+ .name = "EC Codec I2S RX",
+ .capture = {
+ .stream_name = "I2S Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S24_LE,
+ },
+ .ops = &i2s_rx_dai_ops,
+};
+
+static int i2s_rx_probe(struct snd_soc_component *component)
{
- struct ec_param_codec_i2s param;
+ return dmic_probe(component);
+}
- dev_dbg(component->dev, "%s set depth to %u\n", __func__, depth);
+static const struct snd_soc_component_driver i2s_rx_component_driver = {
+ .probe = i2s_rx_probe,
+ .dapm_widgets = i2s_rx_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(i2s_rx_dapm_widgets),
+ .dapm_routes = i2s_rx_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(i2s_rx_dapm_routes),
+};
- param.cmd = EC_CODEC_SET_SAMPLE_DEPTH;
- param.depth = depth;
+static void *wov_map_shm(struct cros_ec_codec_priv *priv,
+ uint8_t shm_id, uint32_t *len, uint8_t *type)
+{
+ struct ec_param_ec_codec p;
+ struct ec_response_ec_codec_get_shm_addr r;
+ uint32_t req, offset;
+
+ p.cmd = EC_CODEC_GET_SHM_ADDR;
+ p.get_shm_addr_param.shm_id = shm_id;
+ if (send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC,
+ (uint8_t *)&p, sizeof(p),
+ (uint8_t *)&r, sizeof(r)) < 0) {
+ dev_err(priv->dev, "failed to EC_CODEC_GET_SHM_ADDR\n");
+ return NULL;
+ }
- return ec_command_no_resp(component, ¶m);
+ dev_dbg(priv->dev, "phys_addr=%#llx, len=%#x\n", r.phys_addr, r.len);
+
+ *len = r.len;
+ *type = r.type;
+
+ switch (r.type) {
+ case EC_CODEC_SHM_TYPE_EC_RAM:
+ return (void __force *)devm_ioremap_wc(priv->dev,
+ r.phys_addr + priv->ec_shm_addr, r.len);
+ case EC_CODEC_SHM_TYPE_SYSTEM_RAM:
+ if (r.phys_addr) {
+ dev_err(priv->dev, "unknown status\n");
+ return NULL;
+ }
+
+ req = round_up(r.len, PAGE_SIZE);
+ dev_dbg(priv->dev, "round up from %u to %u\n", r.len, req);
+
+ if (priv->ap_shm_last_alloc + req >
+ priv->ap_shm_phys_addr + priv->ap_shm_len) {
+ dev_err(priv->dev, "insufficient space for AP SHM\n");
+ return NULL;
+ }
+
+ dev_dbg(priv->dev, "alloc AP SHM addr=%#llx, len=%#x\n",
+ priv->ap_shm_last_alloc, req);
+
+ p.cmd = EC_CODEC_SET_SHM_ADDR;
+ p.set_shm_addr_param.phys_addr = priv->ap_shm_last_alloc;
+ p.set_shm_addr_param.len = req;
+ p.set_shm_addr_param.shm_id = shm_id;
+ if (send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC,
+ (uint8_t *)&p, sizeof(p),
+ NULL, 0) < 0) {
+ dev_err(priv->dev, "failed to EC_CODEC_SET_SHM_ADDR\n");
+ return NULL;
+ }
+
+ /*
+ * Note: EC codec only requests for `r.len' but we allocate
+ * round up PAGE_SIZE `req'.
+ */
+ offset = priv->ap_shm_last_alloc - priv->ap_shm_phys_addr;
+ priv->ap_shm_last_alloc += req;
+
+ return (void *)(uintptr_t)(priv->ap_shm_addr + offset);
+ default:
+ return NULL;
+ }
}
-static int set_i2s_bclk(struct snd_soc_component *component, uint32_t bclk)
+static bool wov_queue_full(struct cros_ec_codec_priv *priv)
{
- struct ec_param_codec_i2s param;
+ return ((priv->wov_wp + 1) % sizeof(priv->wov_buf)) == priv->wov_rp;
+}
- dev_dbg(component->dev, "%s set i2s bclk to %u\n", __func__, bclk);
+static size_t wov_queue_size(struct cros_ec_codec_priv *priv)
+{
+ if (priv->wov_wp >= priv->wov_rp)
+ return priv->wov_wp - priv->wov_rp;
+ else
+ return sizeof(priv->wov_buf) - priv->wov_rp + priv->wov_wp;
+}
+
+static void wov_queue_dequeue(struct cros_ec_codec_priv *priv, size_t len)
+{
+ struct snd_pcm_runtime *runtime = priv->wov_substream->runtime;
+ size_t req;
+
+ while (len) {
+ req = min(len, runtime->dma_bytes - priv->wov_dma_offset);
+ if (priv->wov_wp >= priv->wov_rp)
+ req = min(req, (size_t)priv->wov_wp - priv->wov_rp);
+ else
+ req = min(req, sizeof(priv->wov_buf) - priv->wov_rp);
- param.cmd = EC_CODEC_I2S_SET_BCLK;
- param.bclk = bclk;
+ memcpy(runtime->dma_area + priv->wov_dma_offset,
+ priv->wov_buf + priv->wov_rp, req);
+
+ priv->wov_dma_offset += req;
+ if (priv->wov_dma_offset == runtime->dma_bytes)
+ priv->wov_dma_offset = 0;
+
+ priv->wov_rp += req;
+ if (priv->wov_rp == sizeof(priv->wov_buf))
+ priv->wov_rp = 0;
+
+ len -= req;
+ }
- return ec_command_no_resp(component, ¶m);
+ snd_pcm_period_elapsed(priv->wov_substream);
}
-static int cros_ec_i2s_hw_params(struct snd_pcm_substream *substream,
- struct snd_pcm_hw_params *params,
- struct snd_soc_dai *dai)
+static void wov_queue_try_dequeue(struct cros_ec_codec_priv *priv)
{
- struct snd_soc_component *component = dai->component;
- unsigned int rate, bclk;
- int ret;
+ size_t period_bytes = snd_pcm_lib_period_bytes(priv->wov_substream);
- rate = params_rate(params);
- if (rate != 48000)
- return -EINVAL;
+ while (period_bytes && wov_queue_size(priv) >= period_bytes) {
+ wov_queue_dequeue(priv, period_bytes);
+ period_bytes = snd_pcm_lib_period_bytes(priv->wov_substream);
+ }
+}
- switch (params_format(params)) {
- case SNDRV_PCM_FORMAT_S16_LE:
- ret = set_i2s_sample_depth(component, EC_CODEC_SAMPLE_DEPTH_16);
- break;
- case SNDRV_PCM_FORMAT_S24_LE:
- ret = set_i2s_sample_depth(component, EC_CODEC_SAMPLE_DEPTH_24);
- break;
- default:
- return -EINVAL;
+static void wov_queue_enqueue(struct cros_ec_codec_priv *priv,
+ uint8_t *addr, size_t len, bool iomem)
+{
+ size_t req;
+
+ while (len) {
+ if (wov_queue_full(priv)) {
+ wov_queue_try_dequeue(priv);
+
+ if (wov_queue_full(priv)) {
+ dev_err(priv->dev, "overrun detected\n");
+ return;
+ }
+ }
+
+ if (priv->wov_wp >= priv->wov_rp)
+ req = sizeof(priv->wov_buf) - priv->wov_wp;
+ else
+ /* Note: waste 1-byte to differentiate full and empty */
+ req = priv->wov_rp - priv->wov_wp - 1;
+ req = min(req, len);
+
+ if (iomem)
+ memcpy_fromio(priv->wov_buf + priv->wov_wp,
+ (void __force __iomem *)addr, req);
+ else
+ memcpy(priv->wov_buf + priv->wov_wp, addr, req);
+
+ priv->wov_wp += req;
+ if (priv->wov_wp == sizeof(priv->wov_buf))
+ priv->wov_wp = 0;
+
+ addr += req;
+ len -= req;
}
- if (ret < 0)
+
+ wov_queue_try_dequeue(priv);
+}
+
+static int wov_read_audio_shm(struct cros_ec_codec_priv *priv)
+{
+ struct ec_param_ec_codec_wov p;
+ struct ec_response_ec_codec_wov_read_audio_shm r;
+ int ret;
+
+ p.cmd = EC_CODEC_WOV_READ_AUDIO_SHM;
+ ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_WOV,
+ (uint8_t *)&p, sizeof(p),
+ (uint8_t *)&r, sizeof(r));
+ if (ret) {
+ dev_err(priv->dev, "failed to EC_CODEC_WOV_READ_AUDIO_SHM\n");
return ret;
+ }
- bclk = snd_soc_params_to_bclk(params);
- return set_i2s_bclk(component, bclk);
+ if (!r.len)
+ dev_dbg(priv->dev, "no data, sleep\n");
+ else
+ wov_queue_enqueue(priv, priv->wov_audio_shm_p + r.offset, r.len,
+ priv->wov_audio_shm_type == EC_CODEC_SHM_TYPE_EC_RAM);
+ return -EAGAIN;
}
-static const struct snd_soc_dai_ops cros_ec_i2s_dai_ops = {
- .hw_params = cros_ec_i2s_hw_params,
- .set_fmt = cros_ec_i2s_set_dai_fmt,
-};
+static int wov_read_audio(struct cros_ec_codec_priv *priv)
+{
+ struct ec_param_ec_codec_wov p;
+ struct ec_response_ec_codec_wov_read_audio r;
+ int remain = priv->wov_burst_read ? 16000 : 320;
+ int ret;
-static struct snd_soc_dai_driver cros_ec_dai[] = {
- {
- .name = "cros_ec_codec I2S",
- .id = 0,
- .capture = {
- .stream_name = "I2S Capture",
- .channels_min = 2,
- .channels_max = 2,
- .rates = SNDRV_PCM_RATE_48000,
- .formats = SNDRV_PCM_FMTBIT_S16_LE |
- SNDRV_PCM_FMTBIT_S24_LE,
- },
- .ops = &cros_ec_i2s_dai_ops,
+ while (remain >= 0) {
+ p.cmd = EC_CODEC_WOV_READ_AUDIO;
+ ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_WOV,
+ (uint8_t *)&p, sizeof(p),
+ (uint8_t *)&r, sizeof(r));
+ if (ret) {
+ dev_err(priv->dev,
+ "failed to EC_CODEC_WOV_READ_AUDIO\n");
+ return ret;
+ }
+
+ if (!r.len) {
+ dev_dbg(priv->dev, "no data, sleep\n");
+ priv->wov_burst_read = false;
+ break;
+ }
+
+ wov_queue_enqueue(priv, r.buf, r.len, false);
+ remain -= r.len;
}
-};
-static int get_ec_mic_gain(struct snd_soc_component *component,
- u8 *left, u8 *right)
+ return -EAGAIN;
+}
+
+static void wov_copy_work(struct work_struct *w)
{
- struct ec_param_codec_i2s param;
- struct ec_codec_i2s_gain resp;
+ struct cros_ec_codec_priv *priv =
+ container_of(w, struct cros_ec_codec_priv, wov_copy_work.work);
int ret;
- param.cmd = EC_CODEC_GET_GAIN;
+ mutex_lock(&priv->wov_dma_lock);
+ if (!priv->wov_substream) {
+ dev_warn(priv->dev, "no pcm substream\n");
+ goto leave;
+ }
- ret = ec_command_get_gain(component, ¶m, &resp);
- if (ret < 0)
- return ret;
+ if (ec_codec_capable(priv, EC_CODEC_CAP_WOV_AUDIO_SHM))
+ ret = wov_read_audio_shm(priv);
+ else
+ ret = wov_read_audio(priv);
+
+ if (ret == -EAGAIN)
+ schedule_delayed_work(&priv->wov_copy_work,
+ msecs_to_jiffies(10));
+ else if (ret)
+ dev_err(priv->dev, "failed to read audio data\n");
+leave:
+ mutex_unlock(&priv->wov_dma_lock);
+}
- *left = resp.left;
- *right = resp.right;
+static int wov_enable_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *c = snd_soc_kcontrol_component(kcontrol);
+ struct cros_ec_codec_priv *priv = snd_soc_component_get_drvdata(c);
+ ucontrol->value.integer.value[0] = priv->wov_enabled;
return 0;
}
-static int mic_gain_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
+static int wov_enable_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
{
- struct snd_soc_component *component =
- snd_soc_kcontrol_component(kcontrol);
- u8 left, right;
+ struct snd_soc_component *c = snd_soc_kcontrol_component(kcontrol);
+ struct cros_ec_codec_priv *priv = snd_soc_component_get_drvdata(c);
+ int enabled = ucontrol->value.integer.value[0];
+ struct ec_param_ec_codec_wov p;
int ret;
- ret = get_ec_mic_gain(component, &left, &right);
- if (ret)
- return ret;
-
- ucontrol->value.integer.value[0] = left;
- ucontrol->value.integer.value[1] = right;
+ if (priv->wov_enabled != enabled) {
+ if (enabled)
+ p.cmd = EC_CODEC_WOV_ENABLE;
+ else
+ p.cmd = EC_CODEC_WOV_DISABLE;
+
+ ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_WOV,
+ (uint8_t *)&p, sizeof(p), NULL, 0);
+ if (ret) {
+ dev_err(priv->dev, "failed to %s wov\n",
+ enabled ? "enable" : "disable");
+ return ret;
+ }
+
+ priv->wov_enabled = enabled;
+ }
return 0;
}
-static int set_ec_mic_gain(struct snd_soc_component *component,
- u8 left, u8 right)
+static int wov_set_lang_shm(struct cros_ec_codec_priv *priv,
+ uint8_t *buf, size_t size, uint8_t *digest)
{
- struct ec_param_codec_i2s param;
+ struct ec_param_ec_codec_wov p;
+ struct ec_param_ec_codec_wov_set_lang_shm *pp = &p.set_lang_shm_param;
+ int ret;
+
+ if (size > priv->wov_lang_shm_len) {
+ dev_err(priv->dev, "no enough SHM size: %d\n",
+ priv->wov_lang_shm_len);
+ return -EIO;
+ }
+
+ switch (priv->wov_lang_shm_type) {
+ case EC_CODEC_SHM_TYPE_EC_RAM:
+ memcpy_toio((void __force __iomem *)priv->wov_lang_shm_p,
+ buf, size);
+ memset_io((void __force __iomem *)priv->wov_lang_shm_p + size,
+ 0, priv->wov_lang_shm_len - size);
+ break;
+ case EC_CODEC_SHM_TYPE_SYSTEM_RAM:
+ memcpy(priv->wov_lang_shm_p, buf, size);
+ memset(priv->wov_lang_shm_p + size, 0,
+ priv->wov_lang_shm_len - size);
- dev_dbg(component->dev, "%s set mic gain to %u, %u\n",
- __func__, left, right);
+ /* make sure write to memory before calling host command */
+ wmb();
+ break;
+ }
- param.cmd = EC_CODEC_SET_GAIN;
- param.gain.left = left;
- param.gain.right = right;
+ p.cmd = EC_CODEC_WOV_SET_LANG_SHM;
+ memcpy(pp->hash, digest, SHA256_DIGEST_SIZE);
+ pp->total_len = size;
+ ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_WOV,
+ (uint8_t *)&p, sizeof(p), NULL, 0);
+ if (ret) {
+ dev_err(priv->dev, "failed to EC_CODEC_WOV_SET_LANG_SHM\n");
+ return ret;
+ }
- return ec_command_no_resp(component, ¶m);
+ return 0;
}
-static int mic_gain_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
+static int wov_set_lang(struct cros_ec_codec_priv *priv,
+ uint8_t *buf, size_t size, uint8_t *digest)
{
- struct snd_soc_component *component =
- snd_soc_kcontrol_component(kcontrol);
- struct cros_ec_codec_data *codec_data =
- snd_soc_component_get_drvdata(component);
- int left = ucontrol->value.integer.value[0];
- int right = ucontrol->value.integer.value[1];
- unsigned int max_dmic_gain = codec_data->max_dmic_gain;
+ struct ec_param_ec_codec_wov p;
+ struct ec_param_ec_codec_wov_set_lang *pp = &p.set_lang_param;
+ size_t i, req;
+ int ret;
- if (left > max_dmic_gain || right > max_dmic_gain)
- return -EINVAL;
+ for (i = 0; i < size; i += req) {
+ req = min(size - i, ARRAY_SIZE(pp->buf));
+
+ p.cmd = EC_CODEC_WOV_SET_LANG;
+ memcpy(pp->hash, digest, SHA256_DIGEST_SIZE);
+ pp->total_len = size;
+ pp->offset = i;
+ memcpy(pp->buf, buf + i, req);
+ pp->len = req;
+ ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_WOV,
+ (uint8_t *)&p, sizeof(p), NULL, 0);
+ if (ret) {
+ dev_err(priv->dev, "failed to EC_CODEC_WOV_SET_LANG\n");
+ return ret;
+ }
+ }
- return set_ec_mic_gain(component, (u8)left, (u8)right);
+ return 0;
}
-static struct snd_kcontrol_new mic_gain_control =
- SOC_DOUBLE_EXT_TLV("EC Mic Gain", SND_SOC_NOPM, SND_SOC_NOPM, 0, 0, 0,
- mic_gain_get, mic_gain_put, ec_mic_gain_tlv);
-
-static int enable_i2s(struct snd_soc_component *component, int enable)
+static int wov_hotword_model_put(struct snd_kcontrol *kcontrol,
+ const unsigned int __user *bytes,
+ unsigned int size)
{
- struct ec_param_codec_i2s param;
+ struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+ struct cros_ec_codec_priv *priv =
+ snd_soc_component_get_drvdata(component);
+ struct ec_param_ec_codec_wov p;
+ struct ec_response_ec_codec_wov_get_lang r;
+ uint8_t digest[SHA256_DIGEST_SIZE];
+ uint8_t *buf;
+ int ret;
- dev_dbg(component->dev, "%s set i2s to %u\n", __func__, enable);
+ /* Skips the TLV header. */
+ bytes += 2;
+ size -= 8;
+
+ dev_dbg(priv->dev, "%s: size=%d\n", __func__, size);
+
+ buf = memdup_user(bytes, size);
+ if (IS_ERR(buf))
+ return PTR_ERR(buf);
+
+ ret = calculate_sha256(priv, buf, size, digest);
+ if (ret)
+ goto leave;
+
+ p.cmd = EC_CODEC_WOV_GET_LANG;
+ ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_WOV,
+ (uint8_t *)&p, sizeof(p),
+ (uint8_t *)&r, sizeof(r));
+ if (ret)
+ goto leave;
+
+ if (memcmp(digest, r.hash, SHA256_DIGEST_SIZE) == 0) {
+ dev_dbg(priv->dev, "not updated");
+ goto leave;
+ }
- param.cmd = EC_CODEC_I2S_ENABLE;
- param.i2s_enable = enable;
+ if (ec_codec_capable(priv, EC_CODEC_CAP_WOV_LANG_SHM))
+ ret = wov_set_lang_shm(priv, buf, size, digest);
+ else
+ ret = wov_set_lang(priv, buf, size, digest);
- return ec_command_no_resp(component, ¶m);
+leave:
+ kfree(buf);
+ return ret;
}
-static int cros_ec_i2s_enable_event(struct snd_soc_dapm_widget *w,
- struct snd_kcontrol *kcontrol, int event)
+static struct snd_kcontrol_new wov_controls[] = {
+ SOC_SINGLE_BOOL_EXT("Wake-on-Voice Switch", 0,
+ wov_enable_get, wov_enable_put),
+ SND_SOC_BYTES_TLV("Hotword Model", 0x11000, NULL,
+ wov_hotword_model_put),
+};
+
+static struct snd_soc_dai_driver wov_dai_driver = {
+ .name = "Wake on Voice",
+ .capture = {
+ .stream_name = "WoV Capture",
+ .channels_min = 1,
+ .channels_max = 1,
+ .rates = SNDRV_PCM_RATE_16000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ },
+};
+
+static int wov_host_event(struct notifier_block *nb,
+ unsigned long queued_during_suspend, void *notify)
{
- struct snd_soc_component *component =
- snd_soc_dapm_to_component(w->dapm);
+ struct cros_ec_codec_priv *priv =
+ container_of(nb, struct cros_ec_codec_priv, wov_notifier);
+ u32 host_event;
+
+ dev_dbg(priv->dev, "%s\n", __func__);
+
+ host_event = cros_ec_get_host_event(priv->ec_device);
+ if (host_event & EC_HOST_EVENT_MASK(EC_HOST_EVENT_WOV)) {
+ schedule_delayed_work(&priv->wov_copy_work, 0);
+ return NOTIFY_OK;
+ } else {
+ return NOTIFY_DONE;
+ }
+}
- switch (event) {
- case SND_SOC_DAPM_PRE_PMU:
- dev_dbg(component->dev,
- "%s got SND_SOC_DAPM_PRE_PMU event\n", __func__);
- return enable_i2s(component, 1);
+static int wov_probe(struct snd_soc_component *component)
+{
+ struct cros_ec_codec_priv *priv =
+ snd_soc_component_get_drvdata(component);
+ int ret;
- case SND_SOC_DAPM_PRE_PMD:
- dev_dbg(component->dev,
- "%s got SND_SOC_DAPM_PRE_PMD event\n", __func__);
- return enable_i2s(component, 0);
+ mutex_init(&priv->wov_dma_lock);
+ INIT_DELAYED_WORK(&priv->wov_copy_work, wov_copy_work);
+
+ priv->wov_notifier.notifier_call = wov_host_event;
+ ret = blocking_notifier_chain_register(
+ &priv->ec_device->event_notifier, &priv->wov_notifier);
+ if (ret)
+ return ret;
+
+ if (ec_codec_capable(priv, EC_CODEC_CAP_WOV_LANG_SHM)) {
+ priv->wov_lang_shm_p = wov_map_shm(priv,
+ EC_CODEC_SHM_ID_WOV_LANG,
+ &priv->wov_lang_shm_len,
+ &priv->wov_lang_shm_type);
+ if (!priv->wov_lang_shm_p)
+ return -EFAULT;
}
- return 0;
+ if (ec_codec_capable(priv, EC_CODEC_CAP_WOV_AUDIO_SHM)) {
+ priv->wov_audio_shm_p = wov_map_shm(priv,
+ EC_CODEC_SHM_ID_WOV_AUDIO,
+ &priv->wov_audio_shm_len,
+ &priv->wov_audio_shm_type);
+ if (!priv->wov_audio_shm_p)
+ return -EFAULT;
+ }
+
+ return dmic_probe(component);
}
-/*
- * The goal of this DAPM route is to turn on/off I2S using EC
- * host command when capture stream is started/stopped.
- */
-static const struct snd_soc_dapm_widget cros_ec_codec_dapm_widgets[] = {
- SND_SOC_DAPM_INPUT("DMIC"),
+static void wov_remove(struct snd_soc_component *component)
+{
+ struct cros_ec_codec_priv *priv =
+ snd_soc_component_get_drvdata(component);
- /*
- * Control EC to enable/disable I2S.
- */
- SND_SOC_DAPM_SUPPLY("I2S Enable", SND_SOC_NOPM,
- 0, 0, cros_ec_i2s_enable_event,
- SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD),
+ blocking_notifier_chain_unregister(
+ &priv->ec_device->event_notifier, &priv->wov_notifier);
+}
- SND_SOC_DAPM_AIF_OUT("I2STX", "I2S Capture", 0, SND_SOC_NOPM, 0, 0),
-};
+static int wov_pcm_open(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
+{
+ static const struct snd_pcm_hardware hw_param = {
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_MMAP_VALID,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .rates = SNDRV_PCM_RATE_16000,
+ .channels_min = 1,
+ .channels_max = 1,
+ .period_bytes_min = PAGE_SIZE,
+ .period_bytes_max = 0x20000 / 8,
+ .periods_min = 8,
+ .periods_max = 8,
+ .buffer_bytes_max = 0x20000,
+ };
+
+ return snd_soc_set_runtime_hwparams(substream, &hw_param);
+}
-static const struct snd_soc_dapm_route cros_ec_codec_dapm_routes[] = {
- { "I2STX", NULL, "DMIC" },
- { "I2STX", NULL, "I2S Enable" },
-};
+static int wov_pcm_hw_params(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct cros_ec_codec_priv *priv =
+ snd_soc_component_get_drvdata(component);
-/*
- * Read maximum gain from device property and set it to mixer control.
- */
-static int cros_ec_set_gain_range(struct device *dev)
+ mutex_lock(&priv->wov_dma_lock);
+ priv->wov_substream = substream;
+ priv->wov_rp = priv->wov_wp = 0;
+ priv->wov_dma_offset = 0;
+ priv->wov_burst_read = true;
+ mutex_unlock(&priv->wov_dma_lock);
+
+ return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
+}
+
+static int wov_pcm_hw_free(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
- struct soc_mixer_control *control;
- struct cros_ec_codec_data *codec_data = dev_get_drvdata(dev);
- int rc;
+ struct cros_ec_codec_priv *priv =
+ snd_soc_component_get_drvdata(component);
- rc = device_property_read_u32(dev, "max-dmic-gain",
- &codec_data->max_dmic_gain);
- if (rc)
- return rc;
+ mutex_lock(&priv->wov_dma_lock);
+ wov_queue_dequeue(priv, wov_queue_size(priv));
+ priv->wov_substream = NULL;
+ mutex_unlock(&priv->wov_dma_lock);
- control = (struct soc_mixer_control *)
- mic_gain_control.private_value;
- control->max = codec_data->max_dmic_gain;
- control->platform_max = codec_data->max_dmic_gain;
+ cancel_delayed_work_sync(&priv->wov_copy_work);
- return 0;
+ return snd_pcm_lib_free_pages(substream);
}
-static int cros_ec_codec_probe(struct snd_soc_component *component)
+static snd_pcm_uframes_t wov_pcm_pointer(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream)
{
- int rc;
-
- struct cros_ec_codec_data *codec_data =
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct cros_ec_codec_priv *priv =
snd_soc_component_get_drvdata(component);
- rc = cros_ec_set_gain_range(codec_data->dev);
- if (rc)
- return rc;
+ return bytes_to_frames(runtime, priv->wov_dma_offset);
+}
- return snd_soc_add_component_controls(component, &mic_gain_control, 1);
+static int wov_pcm_new(struct snd_soc_component *component,
+ struct snd_soc_pcm_runtime *rtd)
+{
+ snd_pcm_lib_preallocate_pages_for_all(rtd->pcm, SNDRV_DMA_TYPE_VMALLOC,
+ NULL, 0, 0);
+ return 0;
}
-static const struct snd_soc_component_driver cros_ec_component_driver = {
- .probe = cros_ec_codec_probe,
- .dapm_widgets = cros_ec_codec_dapm_widgets,
- .num_dapm_widgets = ARRAY_SIZE(cros_ec_codec_dapm_widgets),
- .dapm_routes = cros_ec_codec_dapm_routes,
- .num_dapm_routes = ARRAY_SIZE(cros_ec_codec_dapm_routes),
+static const struct snd_soc_component_driver wov_component_driver = {
+ .probe = wov_probe,
+ .remove = wov_remove,
+ .controls = wov_controls,
+ .num_controls = ARRAY_SIZE(wov_controls),
+ .open = wov_pcm_open,
+ .hw_params = wov_pcm_hw_params,
+ .hw_free = wov_pcm_hw_free,
+ .pointer = wov_pcm_pointer,
+ .pcm_construct = wov_pcm_new,
};
-/*
- * Platform device and platform driver fro cros-ec-codec.
- */
-static int cros_ec_codec_platform_probe(struct platform_device *pd)
+static int cros_ec_codec_platform_probe(struct platform_device *pdev)
{
- struct device *dev = &pd->dev;
- struct cros_ec_device *ec_device = dev_get_drvdata(pd->dev.parent);
- struct cros_ec_codec_data *codec_data;
+ struct device *dev = &pdev->dev;
+ struct cros_ec_device *ec_device = dev_get_drvdata(pdev->dev.parent);
+ struct cros_ec_codec_priv *priv;
+ struct ec_param_ec_codec p;
+ struct ec_response_ec_codec_get_capabilities r;
+ int ret;
+#ifdef CONFIG_OF
+ struct device_node *node;
+ struct resource res;
+ u64 ec_shm_size;
+ const __be32 *regaddr_p;
+#endif
- codec_data = devm_kzalloc(dev, sizeof(struct cros_ec_codec_data),
- GFP_KERNEL);
- if (!codec_data)
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
return -ENOMEM;
- codec_data->dev = dev;
- codec_data->ec_device = ec_device;
+#ifdef CONFIG_OF
+ regaddr_p = of_get_address(dev->of_node, 0, &ec_shm_size, NULL);
+ if (regaddr_p) {
+ priv->ec_shm_addr = of_read_number(regaddr_p, 2);
+ priv->ec_shm_len = ec_shm_size;
- platform_set_drvdata(pd, codec_data);
+ dev_dbg(dev, "ec_shm_addr=%#llx len=%#x\n",
+ priv->ec_shm_addr, priv->ec_shm_len);
+ }
- return devm_snd_soc_register_component(dev, &cros_ec_component_driver,
- cros_ec_dai, ARRAY_SIZE(cros_ec_dai));
+ node = of_parse_phandle(dev->of_node, "memory-region", 0);
+ if (node) {
+ ret = of_address_to_resource(node, 0, &res);
+ if (!ret) {
+ priv->ap_shm_phys_addr = res.start;
+ priv->ap_shm_len = resource_size(&res);
+ priv->ap_shm_addr =
+ (uint64_t)(uintptr_t)devm_ioremap_wc(
+ dev, priv->ap_shm_phys_addr,
+ priv->ap_shm_len);
+ priv->ap_shm_last_alloc = priv->ap_shm_phys_addr;
+
+ dev_dbg(dev, "ap_shm_phys_addr=%#llx len=%#x\n",
+ priv->ap_shm_phys_addr, priv->ap_shm_len);
+ }
+ }
+#endif
+
+ priv->dev = dev;
+ priv->ec_device = ec_device;
+ atomic_set(&priv->dmic_probed, 0);
+
+ p.cmd = EC_CODEC_GET_CAPABILITIES;
+ ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC,
+ (uint8_t *)&p, sizeof(p),
+ (uint8_t *)&r, sizeof(r));
+ if (ret) {
+ dev_err(dev, "failed to EC_CODEC_GET_CAPABILITIES\n");
+ return ret;
+ }
+ priv->ec_capabilities = r.capabilities;
+
+ platform_set_drvdata(pdev, priv);
+
+ ret = devm_snd_soc_register_component(dev, &i2s_rx_component_driver,
+ &i2s_rx_dai_driver, 1);
+ if (ret)
+ return ret;
+
+ return devm_snd_soc_register_component(dev, &wov_component_driver,
+ &wov_dai_driver, 1);
}
#ifdef CONFIG_OF
MODULE_DEVICE_TABLE(of, cros_ec_codec_of_match);
#endif
+static const struct acpi_device_id cros_ec_codec_acpi_id[] = {
+ { "GOOG0013", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, cros_ec_codec_acpi_id);
+
static struct platform_driver cros_ec_codec_platform_driver = {
.driver = {
- .name = DRV_NAME,
+ .name = "cros-ec-codec",
.of_match_table = of_match_ptr(cros_ec_codec_of_match),
+ .acpi_match_table = ACPI_PTR(cros_ec_codec_acpi_id),
},
.probe = cros_ec_codec_platform_probe,
};
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("ChromeOS EC codec driver");
MODULE_AUTHOR("Cheng-Yi Chiang <cychiang@chromium.org>");
-MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_ALIAS("platform:cros-ec-codec");
projects / linux-2.6-microblaze.git / blobdiff