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SubjectRe: [PATCH v7 17/24] ASoC: qdsp6: q6routing: Add q6routing driver
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On 5/1/2018 5:08 AM, Srinivas Kandagatla wrote:
> This patch adds support to q6 routing driver which configures route
> between ASM and AFE module using ADM apis.
>
> This driver uses dapm widgets to setup the matrix between AFE ports and
> ASM streams.
>
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> Reviewed-and-tested-by: Rohit kumar <rohitkr@codeaurora.org>
> ---
> sound/soc/qcom/Kconfig | 4 +
> sound/soc/qcom/qdsp6/Makefile | 1 +
> sound/soc/qcom/qdsp6/q6routing.c | 393 +++++++++++++++++++++++++++++++++++++++
> sound/soc/qcom/qdsp6/q6routing.h | 9 +
> 4 files changed, 407 insertions(+)
> create mode 100644 sound/soc/qcom/qdsp6/q6routing.c
> create mode 100644 sound/soc/qcom/qdsp6/q6routing.h
>
> diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
> index 941774abd94f..43f9ed85efa8 100644
> --- a/sound/soc/qcom/Kconfig
> +++ b/sound/soc/qcom/Kconfig
> @@ -53,6 +53,9 @@ config SND_SOC_QDSP6_AFE
> config SND_SOC_QDSP6_ADM
> tristate
>
> +config SND_SOC_QDSP6_ROUTING
> + tristate
> +
> config SND_SOC_QDSP6_ASM
> tristate
>
> @@ -63,6 +66,7 @@ config SND_SOC_QDSP6
> select SND_SOC_QDSP6_CORE
> select SND_SOC_QDSP6_AFE
> select SND_SOC_QDSP6_ADM
> + select SND_SOC_QDSP6_ROUTING
> select SND_SOC_QDSP6_ASM
> help
> To add support for MSM QDSP6 Soc Audio.
> diff --git a/sound/soc/qcom/qdsp6/Makefile b/sound/soc/qcom/qdsp6/Makefile
> index 01d9dcf3375c..0e8e2febb7ec 100644
> --- a/sound/soc/qcom/qdsp6/Makefile
> +++ b/sound/soc/qcom/qdsp6/Makefile
> @@ -2,4 +2,5 @@ obj-$(CONFIG_SND_SOC_QDSP6_COMMON) += q6dsp-common.o
> obj-$(CONFIG_SND_SOC_QDSP6_CORE) += q6core.o
> obj-$(CONFIG_SND_SOC_QDSP6_AFE) += q6afe.o
> obj-$(CONFIG_SND_SOC_QDSP6_ADM) += q6adm.o
> +obj-$(CONFIG_SND_SOC_QDSP6_ROUTING) += q6routing.o
> obj-$(CONFIG_SND_SOC_QDSP6_ASM) += q6asm.o
> diff --git a/sound/soc/qcom/qdsp6/q6routing.c b/sound/soc/qcom/qdsp6/q6routing.c
> new file mode 100644
> index 000000000000..72863672f11f
> --- /dev/null
> +++ b/sound/soc/qcom/qdsp6/q6routing.c
> @@ -0,0 +1,393 @@
> +// SPDX-License-Identifier: GPL-2.0
> +// Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.
> +// Copyright (c) 2018, Linaro Limited
> +
> +#include <linux/init.h>
> +#include <linux/err.h>
> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <linux/of_platform.h>
> +#include <linux/bitops.h>
> +#include <linux/component.h>
> +#include <linux/mutex.h>
> +#include <linux/of_device.h>
> +#include <linux/slab.h>
> +#include <sound/core.h>
> +#include <sound/soc.h>
> +#include <sound/soc-dapm.h>
> +#include <sound/pcm.h>
> +#include <sound/control.h>
> +#include <sound/asound.h>
> +#include <sound/pcm_params.h>
> +#include "q6afe.h"
> +#include "q6asm.h"
> +#include "q6adm.h"
> +#include "q6routing.h"
> +
> +#define DRV_NAME "q6routing-component"
> +
> +struct session_data {
> + int state;
> + int port_id;
> + int path_type;
> + int app_type;
> + int acdb_id;
> + int sample_rate;
> + int bits_per_sample;
> + int channels;
> + int perf_mode;
> + int numcopps;
> + int fedai_id;
> + unsigned long copp_map;
> +};
> +
> +struct msm_routing_data {
> + struct session_data sessions[MAX_SESSIONS];
> + struct session_data port_data[AFE_MAX_PORTS];
> + struct device *dev;
> + struct mutex lock;
> +};
> +
> +static struct msm_routing_data *routing_data;
> +
> +/**
> + * q6routing_stream_open() - Register a new stream for route setup
> + *
> + * @fedai_id: Frontend dai id.
> + * @perf_mode: Performance mode.
> + * @stream_id: ASM stream id to map.
> + * @stream_type: Direction of stream
> + *
> + * Return: Will be an negative on error or a zero on success.
> + */
> +int q6routing_stream_open(int fedai_id, int perf_mode,
> + int stream_id, int stream_type)
> +{
> + int j, topology, num_copps = 0;
> + struct route_payload payload;
> + int copp_idx;
> + struct session_data *session, *pdata;
> +
> + if (!routing_data) {
> + pr_err("Routing driver not yet ready\n");
> + return -EINVAL;
> + }
> +
> + session = &routing_data->sessions[stream_id - 1];
> + pdata = &routing_data->port_data[session->port_id];
> +
> + mutex_lock(&routing_data->lock);
> + session->fedai_id = fedai_id;
> +
> + session->path_type = pdata->path_type;
> + session->sample_rate = pdata->sample_rate;
> + session->channels = pdata->channels;
> + session->bits_per_sample = pdata->bits_per_sample;
> +
> + payload.num_copps = 0; /* only RX needs to use payload */
> + topology = NULL_COPP_TOPOLOGY;
> + copp_idx = q6adm_open(routing_data->dev, session->port_id,
> + session->path_type, session->sample_rate,
> + session->channels, topology, perf_mode,
> + session->bits_per_sample, 0, 0);
> +
> + if (copp_idx < 0) {
> + mutex_unlock(&routing_data->lock);
> + return -EINVAL;
> + }
> +
> + set_bit(copp_idx, &session->copp_map);
> +
> + for_each_set_bit(j, &session->copp_map, MAX_COPPS_PER_PORT) {
> + payload.port_id[num_copps] = session->port_id;
> + payload.copp_idx[num_copps] = j;
> + num_copps++;
> + }
> +
> + if (num_copps) {
> + payload.num_copps = num_copps;
> + payload.session_id = stream_id;
> + q6adm_matrix_map(routing_data->dev, session->path_type,
> + payload, perf_mode);
> + }
> + mutex_unlock(&routing_data->lock);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(q6routing_stream_open);
> +
> +static struct session_data *get_session_from_id(struct msm_routing_data *data,
> + int fedai_id)
> +{
> + int i;
> +
> + for (i = 0; i < MAX_SESSIONS; i++) {
> + if (fedai_id == data->sessions[i].fedai_id)
> + return &data->sessions[i];
> + }
> +
> + return NULL;
> +}
> +/**
> + * q6routing_stream_close() - Deregister a stream
> + *
> + * @fedai_id: Frontend dai id.
> + * @stream_type: Direction of stream
> + *
> + * Return: Will be an negative on error or a zero on success.
> + */
> +void q6routing_stream_close(int fedai_id, int stream_type)
> +{
> + struct session_data *session;
> + int idx;
> +
> + session = get_session_from_id(routing_data, fedai_id);
> + if (!session)
> + return;
> +
> + for_each_set_bit(idx, &session->copp_map, MAX_COPPS_PER_PORT)
> + q6adm_close(routing_data->dev, session->port_id,
> + session->perf_mode, idx);
> +
> + session->fedai_id = -1;
> + session->copp_map = 0;
> +}
> +EXPORT_SYMBOL_GPL(q6routing_stream_close);
> +
> +static int msm_routing_get_audio_mixer(struct snd_kcontrol *kcontrol,
> + struct snd_ctl_elem_value *ucontrol)
> +{
> + struct snd_soc_dapm_context *dapm =
> + snd_soc_dapm_kcontrol_dapm(kcontrol);
> + struct soc_mixer_control *mc =
> + (struct soc_mixer_control *)kcontrol->private_value;
> + int session_id = mc->shift;
> + struct snd_soc_component *c = snd_soc_dapm_to_component(dapm);
> + struct msm_routing_data *priv = dev_get_drvdata(c->dev);
> + struct session_data *session = &priv->sessions[session_id];
> +
> + if (session->port_id == mc->reg)
> + ucontrol->value.integer.value[0] = 1;
> + else
> + ucontrol->value.integer.value[0] = 0;
> +
> + return 0;
> +}
> +
> +static int msm_routing_put_audio_mixer(struct snd_kcontrol *kcontrol,
> + struct snd_ctl_elem_value *ucontrol)
> +{
> + struct snd_soc_dapm_context *dapm =
> + snd_soc_dapm_kcontrol_dapm(kcontrol);
> + struct snd_soc_component *c = snd_soc_dapm_to_component(dapm);
> + struct msm_routing_data *data = dev_get_drvdata(c->dev);
> + struct soc_mixer_control *mc =
> + (struct soc_mixer_control *)kcontrol->private_value;
> + struct snd_soc_dapm_update *update = NULL;
> + int be_id = mc->reg;
> + int session_id = mc->shift;
> + struct session_data *session = &data->sessions[session_id];
> +
> + if (ucontrol->value.integer.value[0]) {
> + session->port_id = be_id;
> + snd_soc_dapm_mixer_update_power(dapm, kcontrol, 1, update);
> + } else {
> + session->port_id = -1;
> + snd_soc_dapm_mixer_update_power(dapm, kcontrol, 0, update);
> + }
> +
> + return 1;
> +}
> +
> +static const struct snd_kcontrol_new hdmi_mixer_controls[] = {
> + SOC_SINGLE_EXT("MultiMedia1", HDMI_RX,
> + MSM_FRONTEND_DAI_MULTIMEDIA1, 1, 0,
At some point in future, when FE DAI IDs become more than "31",
SOC_DOUBLE_EXT would need to be used with "reg" marked with SND_SOC_NOPM
and FE DAI and BE DAI IDs passed in shift_left and shift_right. This is
to avoid having any "shift" operation issue in DAPM code, when reg is
not marked with SND_SOC_NOPM, and shift value is more than 31.
However, for now, its OK.

Acked-by: Banajit Goswami <bgoswami@codeaurora.org

--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

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