Remove unused EC_FEATURE_AUDIO_CODEC.

Signed-off-by: Tzung-Bi Shih tzungbi@google.com --- include/linux/platform_data/cros_ec_commands.h | 2 -- 1 file changed, 2 deletions(-)

diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h index 98415686cbfa..43b8f7dae4cc 100644 --- a/include/linux/platform_data/cros_ec_commands.h +++ b/include/linux/platform_data/cros_ec_commands.h @@ -1277,8 +1277,6 @@ enum ec_feature_code { * MOTIONSENSE_CMD_TABLET_MODE_LID_ANGLE. */ EC_FEATURE_REFINED_TABLET_MODE_HYSTERESIS = 37, - /* EC supports audio codec. */ - EC_FEATURE_AUDIO_CODEC = 38, /* The MCU is a System Companion Processor (SCP). */ EC_FEATURE_SCP = 39, /* The MCU is an Integrated Sensor Hub */

Extract DMIC EC command from I2S RX. Setting and getting microphone gains is common features.

Signed-off-by: Tzung-Bi Shih tzungbi@google.com --- drivers/platform/chrome/cros_ec_trace.c | 1 + .../linux/platform_data/cros_ec_commands.h | 49 +++++++++++----- sound/soc/codecs/cros_ec_codec.c | 57 ++++++++++--------- 3 files changed, 68 insertions(+), 39 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_trace.c b/drivers/platform/chrome/cros_ec_trace.c index 901850004b2b..e73bb6a8b00e 100644 --- a/drivers/platform/chrome/cros_ec_trace.c +++ b/drivers/platform/chrome/cros_ec_trace.c @@ -98,6 +98,7 @@ TRACE_SYMBOL(EC_CMD_SB_READ_BLOCK), \ TRACE_SYMBOL(EC_CMD_SB_WRITE_BLOCK), \ TRACE_SYMBOL(EC_CMD_BATTERY_VENDOR_PARAM), \ + TRACE_SYMBOL(EC_CMD_EC_CODEC_DMIC), \ TRACE_SYMBOL(EC_CMD_EC_CODEC_I2S_RX), \ TRACE_SYMBOL(EC_CMD_REBOOT_EC), \ TRACE_SYMBOL(EC_CMD_GET_PANIC_INFO), \ diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h index 261ac83bd007..58e460c015ef 100644 --- a/include/linux/platform_data/cros_ec_commands.h +++ b/include/linux/platform_data/cros_ec_commands.h @@ -4466,18 +4466,48 @@ enum mkbp_cec_event {

/*****************************************************************************/

+/* Commands for DMIC on audio codec. */ +#define EC_CMD_EC_CODEC_DMIC 0x00BC + +enum ec_codec_dmic_subcmd { + EC_CODEC_DMIC_SET_GAIN = 0x0, + EC_CODEC_DMIC_GET_GAIN = 0x1, + EC_CODEC_DMIC_SUBCMD_COUNT, +}; + +struct __ec_align1 ec_param_ec_codec_dmic_set_gain { + uint8_t left; + uint8_t right; + uint8_t reserved[2]; +}; + +struct __ec_align4 ec_param_ec_codec_dmic { + uint8_t cmd; /* enum ec_codec_dmic_subcmd */ + uint8_t reserved[3]; + + union { + struct ec_param_ec_codec_dmic_set_gain + set_gain_param; + }; +}; + +struct __ec_align1 ec_response_ec_codec_dmic_get_gain { + uint8_t left; + uint8_t right; +}; + +/*****************************************************************************/ + /* Commands for I2S RX on audio codec. */

-#define EC_CMD_EC_CODEC_I2S_RX 0x00BC +#define EC_CMD_EC_CODEC_I2S_RX 0x00BD

enum ec_codec_i2s_rx_subcmd { EC_CODEC_I2S_RX_ENABLE = 0x0, EC_CODEC_I2S_RX_DISABLE = 0x1, - EC_CODEC_I2S_RX_SET_GAIN = 0x2, - EC_CODEC_I2S_RX_GET_GAIN = 0x3, - EC_CODEC_I2S_RX_SET_SAMPLE_DEPTH = 0x4, - EC_CODEC_I2S_RX_SET_DAIFMT = 0x5, - EC_CODEC_I2S_RX_SET_BCLK = 0x6, + EC_CODEC_I2S_RX_SET_SAMPLE_DEPTH = 0x2, + EC_CODEC_I2S_RX_SET_DAIFMT = 0x3, + EC_CODEC_I2S_RX_SET_BCLK = 0x4, EC_CODEC_I2S_RX_SUBCMD_COUNT, };

@@ -4521,8 +4551,6 @@ struct __ec_align4 ec_param_ec_codec_i2s_rx { union { struct ec_param_ec_codec_i2s_rx_set_sample_depth set_sample_depth_param; - struct ec_param_ec_codec_i2s_rx_set_gain - set_gain_param; struct ec_param_ec_codec_i2s_rx_set_daifmt set_daifmt_param; struct ec_param_ec_codec_i2s_rx_set_bclk @@ -4530,11 +4558,6 @@ struct __ec_align4 ec_param_ec_codec_i2s_rx { }; };

-struct __ec_align1 ec_response_ec_codec_i2s_rx_get_gain { - uint8_t left; - uint8_t right; -}; - /*****************************************************************************/ /* System commands */

diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c index 179fa77291cd..c19c7fe42e2e 100644 --- a/sound/soc/codecs/cros_ec_codec.c +++ b/sound/soc/codecs/cros_ec_codec.c @@ -64,12 +64,12 @@ static int dmic_get_gain(struct snd_kcontrol *kcontrol, snd_soc_kcontrol_component(kcontrol); struct cros_ec_codec_priv *priv = snd_soc_component_get_drvdata(component); - struct ec_param_ec_codec_i2s_rx p; - struct ec_response_ec_codec_i2s_rx_get_gain r; + struct ec_param_ec_codec_dmic p; + struct ec_response_ec_codec_dmic_get_gain r; int ret;

- p.cmd = EC_CODEC_I2S_RX_GET_GAIN; - ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_I2S_RX, + p.cmd = EC_CODEC_DMIC_GET_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) @@ -93,17 +93,17 @@ static int dmic_put_gain(struct snd_kcontrol *kcontrol, 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_i2s_rx p; + struct ec_param_ec_codec_dmic p;

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_I2S_RX_SET_GAIN; + p.cmd = EC_CODEC_DMIC_SET_GAIN; p.set_gain_param.left = left; p.set_gain_param.right = right; - return send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_I2S_RX, + return send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_DMIC, (uint8_t *)&p, sizeof(p), NULL, 0); }

@@ -120,6 +120,29 @@ static struct snd_kcontrol_new dmic_controls[] = { 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; + int ret, val; + struct soc_mixer_control *control; + + ret = device_property_read_u32(dev, "max-dmic-gain", &val); + if (ret) { + dev_err(dev, "Failed to read 'max-dmic-gain'\n"); + return ret; + } + + control = (struct soc_mixer_control *) + dmic_controls[DMIC_CTL_GAIN].private_value; + control->max = val; + control->platform_max = val; + + return snd_soc_add_component_controls(component, + &dmic_controls[DMIC_CTL_GAIN], 1); +} + static int i2s_rx_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) @@ -265,25 +288,7 @@ static struct snd_soc_dai_driver i2s_rx_dai_driver = {

static int i2s_rx_probe(struct snd_soc_component *component) { - struct cros_ec_codec_priv *priv = - snd_soc_component_get_drvdata(component); - struct device *dev = priv->dev; - int ret, val; - struct soc_mixer_control *control; - - ret = device_property_read_u32(dev, "max-dmic-gain", &val); - if (ret) { - dev_err(dev, "Failed to read 'max-dmic-gain'\n"); - return ret; - } - - control = (struct soc_mixer_control *) - dmic_controls[DMIC_CTL_GAIN].private_value; - control->max = val; - control->platform_max = val; - - return snd_soc_add_component_controls(component, - &dmic_controls[DMIC_CTL_GAIN], 1); + return dmic_probe(component); }

static const struct snd_soc_component_driver i2s_rx_component_driver = {

Read max DMIC gain from EC codec instead of DTS. Also removes the dt-binding of max-dmic-gain.

Signed-off-by: Tzung-Bi Shih tzungbi@google.com --- .../bindings/sound/google,cros-ec-codec.txt | 4 +- .../linux/platform_data/cros_ec_commands.h | 43 +++++++++++---- sound/soc/codecs/cros_ec_codec.c | 53 ++++++++++++++----- 3 files changed, 73 insertions(+), 27 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt b/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt index 1084f7f22eea..0ce9fafc78e2 100644 --- a/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt +++ b/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt @@ -1,4 +1,4 @@ -* Audio codec controlled by ChromeOS EC +Audio codec controlled by ChromeOS EC

Google's ChromeOS EC codec is a digital mic codec provided by the Embedded Controller (EC) and is controlled via a host-command interface. @@ -9,7 +9,6 @@ Documentation/devicetree/bindings/mfd/cros-ec.txt). Required properties: - compatible: Must contain "google,cros-ec-codec" - #sound-dai-cells: Should be 1. The cell specifies number of DAIs. -- max-dmic-gain: A number for maximum gain in dB on digital microphone.

Example:

@@ -21,6 +20,5 @@ cros-ec@0 { cros_ec_codec: ec-codec { compatible = "google,cros-ec-codec"; #sound-dai-cells = <1>; - max-dmic-gain = <43>; }; }; diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h index 3ca0fa9e92a7..21db0d4d4025 100644 --- a/include/linux/platform_data/cros_ec_commands.h +++ b/include/linux/platform_data/cros_ec_commands.h @@ -4530,30 +4530,53 @@ struct __ec_align4 ec_response_ec_codec_get_shm_addr { #define EC_CMD_EC_CODEC_DMIC 0x00BD

enum ec_codec_dmic_subcmd { - EC_CODEC_DMIC_SET_GAIN = 0x0, - EC_CODEC_DMIC_GET_GAIN = 0x1, + EC_CODEC_DMIC_GET_MAX_GAIN = 0x0, + EC_CODEC_DMIC_SET_GAIN_IDX = 0x1, + EC_CODEC_DMIC_GET_GAIN_IDX = 0x2, EC_CODEC_DMIC_SUBCMD_COUNT, };

-struct __ec_align1 ec_param_ec_codec_dmic_set_gain { - uint8_t left; - uint8_t right; +enum ec_codec_dmic_channel { + EC_CODEC_DMIC_CHANNEL_0 = 0x0, + EC_CODEC_DMIC_CHANNEL_1 = 0x1, + EC_CODEC_DMIC_CHANNEL_2 = 0x2, + EC_CODEC_DMIC_CHANNEL_3 = 0x3, + EC_CODEC_DMIC_CHANNEL_4 = 0x4, + EC_CODEC_DMIC_CHANNEL_5 = 0x5, + EC_CODEC_DMIC_CHANNEL_6 = 0x6, + EC_CODEC_DMIC_CHANNEL_7 = 0x7, + EC_CODEC_DMIC_CHANNEL_COUNT, +}; + +struct __ec_align1 ec_param_ec_codec_dmic_set_gain_idx { + uint8_t channel; /* enum ec_codec_dmic_channel */ + uint8_t gain; uint8_t reserved[2]; };

+struct __ec_align1 ec_param_ec_codec_dmic_get_gain_idx { + uint8_t channel; /* enum ec_codec_dmic_channel */ + uint8_t reserved[3]; +}; + struct __ec_align4 ec_param_ec_codec_dmic { uint8_t cmd; /* enum ec_codec_dmic_subcmd */ uint8_t reserved[3];

union { - struct ec_param_ec_codec_dmic_set_gain - set_gain_param; + struct ec_param_ec_codec_dmic_set_gain_idx + set_gain_idx_param; + struct ec_param_ec_codec_dmic_get_gain_idx + get_gain_idx_param; }; };

-struct __ec_align1 ec_response_ec_codec_dmic_get_gain { - uint8_t left; - uint8_t right; +struct __ec_align1 ec_response_ec_codec_dmic_get_max_gain { + uint8_t max_gain; +}; + +struct __ec_align1 ec_response_ec_codec_dmic_get_gain_idx { + uint8_t gain; };

/*****************************************************************************/ diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c index c19c7fe42e2e..3d4f9e82d6e9 100644 --- a/sound/soc/codecs/cros_ec_codec.c +++ b/sound/soc/codecs/cros_ec_codec.c @@ -65,18 +65,26 @@ static int dmic_get_gain(struct snd_kcontrol *kcontrol, struct cros_ec_codec_priv *priv = snd_soc_component_get_drvdata(component); struct ec_param_ec_codec_dmic p; - struct ec_response_ec_codec_dmic_get_gain r; + struct ec_response_ec_codec_dmic_get_gain_idx r; int ret;

- p.cmd = EC_CODEC_DMIC_GET_GAIN; + 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;

- ucontrol->value.integer.value[0] = r.left; - ucontrol->value.integer.value[1] = r.right; + 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; } @@ -94,15 +102,24 @@ static int dmic_put_gain(struct snd_kcontrol *kcontrol, 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; - p.set_gain_param.left = left; - p.set_gain_param.right = 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); } @@ -125,19 +142,27 @@ 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; - int ret, val; struct soc_mixer_control *control; + struct ec_param_ec_codec_dmic p; + struct ec_response_ec_codec_dmic_get_max_gain r; + int ret;

- ret = device_property_read_u32(dev, "max-dmic-gain", &val); - if (ret) { - dev_err(dev, "Failed to read 'max-dmic-gain'\n"); - return ret; + 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 = val; - control->platform_max = val; + control->max = r.max_gain; + control->platform_max = r.max_gain;

return snd_soc_add_component_controls(component, &dmic_controls[DMIC_CTL_GAIN], 1);

- Add "ec-shm" for binding to shared memory exposed by EC. - Add "memory-region" for binding to memory region shared by AP.

Signed-off-by: Tzung-Bi Shih tzungbi@google.com --- .../bindings/sound/google,cros-ec-codec.txt | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt b/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt index 0ce9fafc78e2..cb46bc082b4b 100644 --- a/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt +++ b/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt @@ -10,8 +10,26 @@ Required properties: - compatible: Must contain "google,cros-ec-codec" - #sound-dai-cells: Should be 1. The cell specifies number of DAIs.

+Optional properties: +- ec-shm: Shared memory region from EC. It contains 3 unsigned 32-bit + integer. The first 2 integers combine to become an unsigned + 64-bit address. The last one integer is length of the shared + memory. +- memory-region: Shared memory region to EC. A "shared-dma-pool". See + ../reserved-memory/reserved-memory.txt for details. + Example:

+{ + ... + + reserved_mem: reserved_mem { + compatible = "shared-dma-pool"; + reg = <0 0x52800000 0 0x100000>; + no-map; + }; +} + cros-ec@0 { compatible = "google,cros-ec-spi";

@@ -20,5 +38,7 @@ cros-ec@0 { cros_ec_codec: ec-codec { compatible = "google,cros-ec-codec"; #sound-dai-cells = <1>; + ec-shm = <0x0 0x10500000 0x80000>; + memory-region = <&reserved_mem>; }; };

1. Get EC codec's capabilities. 2. Get and set SHM address if any. 3. Transmit language model to EC codec if needed. 4. Start to read audio data from EC codec if receives host event.

Signed-off-by: Tzung-Bi Shih tzungbi@google.com --- drivers/platform/chrome/cros_ec_trace.c | 1 + .../linux/platform_data/cros_ec_commands.h | 69 ++ sound/soc/codecs/cros_ec_codec.c | 695 +++++++++++++++++- 3 files changed, 763 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_trace.c b/drivers/platform/chrome/cros_ec_trace.c index 2ea0d4e0d54d..5af1d66d9eca 100644 --- a/drivers/platform/chrome/cros_ec_trace.c +++ b/drivers/platform/chrome/cros_ec_trace.c @@ -101,6 +101,7 @@ TRACE_SYMBOL(EC_CMD_EC_CODEC), \ TRACE_SYMBOL(EC_CMD_EC_CODEC_DMIC), \ TRACE_SYMBOL(EC_CMD_EC_CODEC_I2S_RX), \ + TRACE_SYMBOL(EC_CMD_EC_CODEC_WOV), \ TRACE_SYMBOL(EC_CMD_REBOOT_EC), \ TRACE_SYMBOL(EC_CMD_GET_PANIC_INFO), \ TRACE_SYMBOL(EC_CMD_ACPI_READ), \ diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h index 21db0d4d4025..69210881ebac 100644 --- a/include/linux/platform_data/cros_ec_commands.h +++ b/include/linux/platform_data/cros_ec_commands.h @@ -556,6 +556,9 @@ enum host_event_code { /* Keyboard recovery combo with hardware reinitialization */ EC_HOST_EVENT_KEYBOARD_RECOVERY_HW_REINIT = 30,

+ /* WoV */ + EC_HOST_EVENT_WOV = 31, + /* * The high bit of the event mask is not used as a host event code. If * it reads back as set, then the entire event mask should be @@ -4477,10 +4480,14 @@ enum ec_codec_subcmd { };

enum ec_codec_cap { + EC_CODEC_CAP_WOV_AUDIO_SHM = 0, + EC_CODEC_CAP_WOV_LANG_SHM = 1, EC_CODEC_CAP_LAST = 32, };

enum ec_codec_shm_id { + EC_CODEC_SHM_ID_WOV_AUDIO = 0x0, + EC_CODEC_SHM_ID_WOV_LANG = 0x1, EC_CODEC_SHM_ID_LAST, };

@@ -4641,6 +4648,68 @@ struct __ec_align4 ec_param_ec_codec_i2s_rx { }; };

+/*****************************************************************************/ +/* Commands for WoV on audio codec. */ + +#define EC_CMD_EC_CODEC_WOV 0x00BF + +enum ec_codec_wov_subcmd { + EC_CODEC_WOV_SET_LANG = 0x0, + EC_CODEC_WOV_SET_LANG_SHM = 0x1, + EC_CODEC_WOV_GET_LANG = 0x2, + EC_CODEC_WOV_ENABLE = 0x3, + EC_CODEC_WOV_DISABLE = 0x4, + EC_CODEC_WOV_READ_AUDIO = 0x5, + EC_CODEC_WOV_READ_AUDIO_SHM = 0x6, + EC_CODEC_WOV_SUBCMD_COUNT, +}; + +/* + * @hash is SHA256 of the whole language model. + * @total_len indicates the length of whole language model. + * @offset is the cursor from the beginning of the model. + * @buf is the packet buffer. + * @len denotes how many bytes in the buf. + */ +struct __ec_align4 ec_param_ec_codec_wov_set_lang { + uint8_t hash[32]; + uint32_t total_len; + uint32_t offset; + uint8_t buf[128]; + uint32_t len; +}; + +struct __ec_align4 ec_param_ec_codec_wov_set_lang_shm { + uint8_t hash[32]; + uint32_t total_len; +}; + +struct __ec_align4 ec_param_ec_codec_wov { + uint8_t cmd; /* enum ec_codec_wov_subcmd */ + uint8_t reserved[3]; + + union { + struct ec_param_ec_codec_wov_set_lang + set_lang_param; + struct ec_param_ec_codec_wov_set_lang_shm + set_lang_shm_param; + }; +}; + +struct __ec_align4 ec_response_ec_codec_wov_get_lang { + uint8_t hash[32]; +}; + +struct __ec_align4 ec_response_ec_codec_wov_read_audio { + uint8_t buf[128]; + uint32_t len; +}; + +struct __ec_align4 ec_response_ec_codec_wov_read_audio_shm { + uint32_t offset; + uint32_t len; +}; + /*****************************************************************************/ /* System commands */

diff --git a/sound/soc/codecs/cros_ec_codec.c b/sound/soc/codecs/cros_ec_codec.c index 3d4f9e82d6e9..807cb59ca3db 100644 --- a/sound/soc/codecs/cros_ec_codec.c +++ b/sound/soc/codecs/cros_ec_codec.c @@ -8,10 +8,15 @@ * EC for audio function. */

+#include <crypto/hash.h> +#include <crypto/sha.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_address.h> #include <linux/platform_data/cros_ec_commands.h> #include <linux/platform_data/cros_ec_proto.h> #include <linux/platform_device.h> @@ -23,8 +28,45 @@ struct cros_ec_codec_priv { struct device *dev; struct cros_ec_device *ec_device; + + /* 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 int ec_codec_capable(struct cros_ec_codec_priv *priv, uint8_t cap) +{ + return priv->ec_capabilities & BIT(cap); +} + 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) @@ -57,6 +99,41 @@ static int send_ec_host_command(struct cros_ec_device *ec_dev, uint32_t cmd, return ret; }

+static int calculate_sha256(struct cros_ec_codec_priv *priv, + uint8_t *buf, uint32_t size, uint8_t *digest) +{ + 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) { @@ -147,6 +224,9 @@ static int dmic_probe(struct snd_soc_component *component) struct ec_response_ec_codec_dmic_get_max_gain r; int ret;

+ if (!atomic_add_unless(&priv->dmic_probed, 1, 1)) + return 0; + p.cmd = EC_CODEC_DMIC_GET_MAX_GAIN;

ret = send_ec_host_command(priv->ec_device, EC_CMD_EC_CODEC_DMIC, @@ -324,23 +404,634 @@ static const struct snd_soc_component_driver i2s_rx_component_driver = { .num_dapm_routes = ARRAY_SIZE(i2s_rx_dapm_routes), };

+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; + } + + 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 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 bool wov_queue_full(struct cros_ec_codec_priv *priv) +{ + return ((priv->wov_wp + 1) % sizeof(priv->wov_buf)) == priv->wov_rp; +} + +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); + + 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; + } + + snd_pcm_period_elapsed(priv->wov_substream); +} + +static void wov_queue_try_dequeue(struct cros_ec_codec_priv *priv) +{ + size_t period_bytes = snd_pcm_lib_period_bytes(priv->wov_substream); + + 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); + } +} + +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, 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; + } + + 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; + } + + 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 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; + + 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; + } + + return -EAGAIN; +} + +static void wov_copy_work(struct work_struct *w) +{ + struct cros_ec_codec_priv *priv = + container_of(w, struct cros_ec_codec_priv, wov_copy_work.work); + int ret; + + mutex_lock(&priv->wov_dma_lock); + if (!priv->wov_substream) { + dev_warn(priv->dev, "no pcm substream\n"); + goto leave; + } + + 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); +} + +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 wov_enable_put(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); + int enabled = ucontrol->value.integer.value[0]; + struct ec_param_ec_codec_wov p; + int ret; + + 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 wov_set_lang_shm(struct cros_ec_codec_priv *priv, + uint8_t *buf, size_t size, uint8_t *digest) +{ + 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(priv->wov_lang_shm_p, buf, size); + memset_io(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); + + /* make sure write to memory before calling host command */ + wmb(); + break; + } + + 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 0; +} + +static int wov_set_lang(struct cros_ec_codec_priv *priv, + uint8_t *buf, size_t size, uint8_t *digest) +{ + 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; + + 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 0; +} + +static int wov_hotword_model_put(struct snd_kcontrol *kcontrol, + const unsigned int __user *bytes, + unsigned int size) +{ + 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; + + /* Skips the TLV header. */ + bytes += 2; + size -= 8; + + dev_dbg(priv->dev, "%s: size=%d\n", __func__, size); + + buf = kmalloc(size, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + if (copy_from_user(buf, bytes, size)) { + ret = -EFAULT; + goto leave; + } + + 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; + } + + 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); + +leave: + kfree(buf); + return ret; +} + +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 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; + } +} + +static int wov_probe(struct snd_soc_component *component) +{ + struct cros_ec_codec_priv *priv = + snd_soc_component_get_drvdata(component); + int ret; + + 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; + } + + 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); +} + +static void wov_remove(struct snd_soc_component *component) +{ + struct cros_ec_codec_priv *priv = + snd_soc_component_get_drvdata(component); + + blocking_notifier_chain_unregister( + &priv->ec_device->event_notifier, &priv->wov_notifier); +} + +static int wov_pcm_open(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 int wov_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *hw_params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_component *component = rtd->codec_dai->component; + struct cros_ec_codec_priv *priv = + snd_soc_component_get_drvdata(component); + + 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_alloc_vmalloc_buffer(substream, + params_buffer_bytes(hw_params)); +} + +static int wov_pcm_hw_free(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_component *component = rtd->codec_dai->component; + struct cros_ec_codec_priv *priv = + snd_soc_component_get_drvdata(component); + + mutex_lock(&priv->wov_dma_lock); + wov_queue_dequeue(priv, wov_queue_size(priv)); + priv->wov_substream = NULL; + mutex_unlock(&priv->wov_dma_lock); + + cancel_delayed_work_sync(&priv->wov_copy_work); + + return snd_pcm_lib_free_vmalloc_buffer(substream); +} + +static snd_pcm_uframes_t wov_pcm_pointer(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_component *component = rtd->codec_dai->component; + struct cros_ec_codec_priv *priv = + snd_soc_component_get_drvdata(component); + + return bytes_to_frames(runtime, priv->wov_dma_offset); +} + +static const struct snd_pcm_ops wov_pcm_ops = { + .open = wov_pcm_open, + .hw_params = wov_pcm_hw_params, + .hw_free = wov_pcm_hw_free, + .pointer = wov_pcm_pointer, + .page = snd_pcm_lib_get_vmalloc_page, +}; + +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), + .ops = &wov_pcm_ops, +}; + static int cros_ec_codec_platform_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct cros_ec_device *ec_device = dev_get_drvdata(pdev->dev.parent); struct cros_ec_codec_priv *priv; + uint32_t val[3]; + struct device_node *node; + struct resource res; + struct ec_param_ec_codec p; + struct ec_response_ec_codec_get_capabilities r; + int ret;

priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM;

+ if (device_property_read_u32_array(dev, "ec-shm", val, 3) == 0) { + priv->ec_shm_addr = (uint64_t)val[0] << 32 | val[1]; + priv->ec_shm_len = val[2]; + + dev_dbg(dev, "ec_shm_addr=%#llx len=%#x\n", + priv->ec_shm_addr, priv->ec_shm_len); + } + + 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); + } + } + 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);

- return devm_snd_soc_register_component(dev, &i2s_rx_component_driver, - &i2s_rx_dai_driver, 1); + 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

Add an optional property "ec-codec". If specified, mt8183 could use the "wake on voice" feature offered by EC codec.

Signed-off-by: Tzung-Bi Shih tzungbi@google.com --- .../bindings/sound/mt8183-mt6358-ts3a227-max98357.txt | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/mt8183-mt6358-ts3a227-max98357.txt b/Documentation/devicetree/bindings/sound/mt8183-mt6358-ts3a227-max98357.txt index 17ff3892f439..decaa013a07e 100644 --- a/Documentation/devicetree/bindings/sound/mt8183-mt6358-ts3a227-max98357.txt +++ b/Documentation/devicetree/bindings/sound/mt8183-mt6358-ts3a227-max98357.txt @@ -6,12 +6,15 @@ Required properties:

Optional properties: - mediatek,headset-codec: the phandles of ts3a227 codecs +- mediatek,ec-codec: the phandle of EC codecs. + See google,cros-ec-codec.txt for more details.

Example:

sound { compatible = "mediatek,mt8183_mt6358_ts3a227_max98357"; mediatek,headset-codec = <&ts3a227>; + mediatek,ec-codec = <&ec_codec>; mediatek,platform = <&afe>; };