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no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org, devicetree@vger.kernel.org, linux-usb@vger.kernel.org, quic_jackp@quicinc.com, quic_plai@quicinc.com, Wesley Cheng X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: The Q6USB backend can carry information about the available USB SND cards and PCM devices discovered on the USB bus. The dev_token field is used by the audio DSP to notify the USB offload driver of which card and PCM index to enable playback on. Separate this into a dedicated API, so the USB backend can set the dev_token accordingly. The audio DSP does not utilize this information until the AFE port start command is sent, which is done during the PCM prepare phase. Signed-off-by: Wesley Cheng --- sound/soc/qcom/qdsp6/q6afe.c | 49 +++++++++++++++++++++++++----------- sound/soc/qcom/qdsp6/q6afe.h | 1 + 2 files changed, 36 insertions(+), 14 deletions(-) diff --git a/sound/soc/qcom/qdsp6/q6afe.c b/sound/soc/qcom/qdsp6/q6afe.c index e9d5fa6b6b0d..505371c96987 100644 --- a/sound/soc/qcom/qdsp6/q6afe.c +++ b/sound/soc/qcom/qdsp6/q6afe.c @@ -1394,10 +1394,42 @@ void q6afe_tdm_port_prepare(struct q6afe_port *port, } EXPORT_SYMBOL_GPL(q6afe_tdm_port_prepare); -static int afe_port_send_usb_dev_param(struct q6afe_port *port, struct q6afe_usb_cfg *cfg) +/** + * afe_port_send_usb_dev_param() - Send USB dev token + * + * @port: Instance of afe port + * @cardidx: USB SND card index to reference + * @pcmidx: USB SND PCM device index to reference + * + * The USB dev token carries information about which USB SND card instance and + * PCM device to execute the offload on. This information is carried through + * to the stream enable QMI request, which is handled by the offload class + * driver. The information is parsed to determine which USB device to query + * the required resources for. + */ +int afe_port_send_usb_dev_param(struct q6afe_port *port, int cardidx, int pcmidx) { - union afe_port_config *pcfg = &port->port_cfg; struct afe_param_id_usb_audio_dev_params usb_dev; + int ret; + + memset(&usb_dev, 0, sizeof(usb_dev)); + + usb_dev.cfg_minor_version = AFE_API_MINOR_VERSION_USB_AUDIO_CONFIG; + usb_dev.dev_token = (cardidx << 16) | (pcmidx << 8); + ret = q6afe_port_set_param_v2(port, &usb_dev, + AFE_PARAM_ID_USB_AUDIO_DEV_PARAMS, + AFE_MODULE_AUDIO_DEV_INTERFACE, sizeof(usb_dev)); + if (ret) + dev_err(port->afe->dev, "%s: AFE device param cmd failed %d\n", + __func__, ret); + + return ret; +} +EXPORT_SYMBOL_GPL(afe_port_send_usb_dev_param); + +static int afe_port_send_usb_params(struct q6afe_port *port, struct q6afe_usb_cfg *cfg) +{ + union afe_port_config *pcfg = &port->port_cfg; struct afe_param_id_usb_audio_dev_lpcm_fmt lpcm_fmt; struct afe_param_id_usb_audio_svc_interval svc_int; int ret = 0; @@ -1408,20 +1440,9 @@ static int afe_port_send_usb_dev_param(struct q6afe_port *port, struct q6afe_usb goto exit; } - memset(&usb_dev, 0, sizeof(usb_dev)); memset(&lpcm_fmt, 0, sizeof(lpcm_fmt)); memset(&svc_int, 0, sizeof(svc_int)); - usb_dev.cfg_minor_version = AFE_API_MINOR_VERSION_USB_AUDIO_CONFIG; - q6afe_port_set_param_v2(port, &usb_dev, - AFE_PARAM_ID_USB_AUDIO_DEV_PARAMS, - AFE_MODULE_AUDIO_DEV_INTERFACE, sizeof(usb_dev)); - if (ret) { - dev_err(port->afe->dev, "%s: AFE device param cmd failed %d\n", - __func__, ret); - goto exit; - } - lpcm_fmt.cfg_minor_version = AFE_API_MINOR_VERSION_USB_AUDIO_CONFIG; lpcm_fmt.endian = pcfg->usb_cfg.endian; ret = q6afe_port_set_param_v2(port, &lpcm_fmt, @@ -1465,7 +1486,7 @@ void q6afe_usb_port_prepare(struct q6afe_port *port, pcfg->usb_cfg.num_channels = cfg->num_channels; pcfg->usb_cfg.bit_width = cfg->bit_width; - afe_port_send_usb_dev_param(port, cfg); + afe_port_send_usb_params(port, cfg); } EXPORT_SYMBOL_GPL(q6afe_usb_port_prepare); diff --git a/sound/soc/qcom/qdsp6/q6afe.h b/sound/soc/qcom/qdsp6/q6afe.h index e098a3e15135..7980416275e9 100644 --- a/sound/soc/qcom/qdsp6/q6afe.h +++ b/sound/soc/qcom/qdsp6/q6afe.h @@ -274,6 +274,7 @@ void q6afe_tdm_port_prepare(struct q6afe_port *port, struct q6afe_tdm_cfg *cfg); void q6afe_cdc_dma_port_prepare(struct q6afe_port *port, struct q6afe_cdc_dma_cfg *cfg); +int afe_port_send_usb_dev_param(struct q6afe_port *port, int cardidx, int pcmidx); int q6afe_port_set_sysclk(struct q6afe_port *port, int clk_id, int clk_src, int clk_root, unsigned int freq, int dir);