From a13e872314ae97d3ec8c70de6a01d5904182b049 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Fri, 18 May 2018 13:56:01 +0100 Subject: [PATCH] ASoC: qdsp6: q6asm: Add q6asm driver This patch adds basic support to Q6 ASM (Audio Stream Manager) module on Q6DSP. ASM supports up to 8 concurrent streams. each stream can be setup as playback/capture. ASM provides top control functions like Pause/flush/resume for playback and record. ASM can Create/destroy encoder, decoder and also provides POPP dynamic services. This patch adds support to basic features to allow hdmi playback. Signed-off-by: Srinivas Kandagatla Reviewed-and-tested-by: Rohit kumar Reviewed-by: Banajit Goswami Signed-off-by: Mark Brown --- sound/soc/qcom/Kconfig | 4 + sound/soc/qcom/qdsp6/Makefile | 1 + sound/soc/qcom/qdsp6/q6asm.c | 252 ++++++++++++++++++++++++++++++++++++++++++ sound/soc/qcom/qdsp6/q6asm.h | 15 +++ 4 files changed, 272 insertions(+) create mode 100644 sound/soc/qcom/qdsp6/q6asm.c create mode 100644 sound/soc/qcom/qdsp6/q6asm.h diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig index 971127e..941774a 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_ASM + tristate + config SND_SOC_QDSP6 tristate "SoC ALSA audio driver for QDSP6" depends on QCOM_APR && HAS_DMA @@ -60,6 +63,7 @@ config SND_SOC_QDSP6 select SND_SOC_QDSP6_CORE select SND_SOC_QDSP6_AFE select SND_SOC_QDSP6_ADM + select SND_SOC_QDSP6_ASM help To add support for MSM QDSP6 Soc Audio. This will enable sound soc platform specific diff --git a/sound/soc/qcom/qdsp6/Makefile b/sound/soc/qcom/qdsp6/Makefile index 95cdb3a..01d9dcf 100644 --- a/sound/soc/qcom/qdsp6/Makefile +++ b/sound/soc/qcom/qdsp6/Makefile @@ -2,3 +2,4 @@ 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_ASM) += q6asm.o diff --git a/sound/soc/qcom/qdsp6/q6asm.c b/sound/soc/qcom/qdsp6/q6asm.c new file mode 100644 index 0000000..585fcfb --- /dev/null +++ b/sound/soc/qcom/qdsp6/q6asm.c @@ -0,0 +1,252 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2011-2017, The Linux Foundation. All rights reserved. +// Copyright (c) 2018, Linaro Limited + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "q6asm.h" +#include "q6core.h" +#include "q6dsp-errno.h" +#include "q6dsp-common.h" + +#define ASM_SYNC_IO_MODE 0x0001 +#define ASM_ASYNC_IO_MODE 0x0002 +#define ASM_TUN_READ_IO_MODE 0x0004 /* tunnel read write mode */ +#define ASM_TUN_WRITE_IO_MODE 0x0008 /* tunnel read write mode */ + +struct q6asm { + struct apr_device *adev; + struct device *dev; + struct q6core_svc_api_info ainfo; + wait_queue_head_t mem_wait; + struct platform_device *pcmdev; + spinlock_t slock; + struct audio_client *session[MAX_SESSIONS + 1]; + struct platform_device *pdev_dais; +}; + +struct audio_client { + int session; + q6asm_cb cb; + void *priv; + uint32_t io_mode; + struct apr_device *adev; + struct mutex cmd_lock; + spinlock_t lock; + struct kref refcount; + wait_queue_head_t cmd_wait; + struct aprv2_ibasic_rsp_result_t result; + int perf_mode; + int stream_id; + struct q6asm *q6asm; + struct device *dev; +}; + +static void q6asm_audio_client_release(struct kref *ref) +{ + struct audio_client *ac; + struct q6asm *a; + unsigned long flags; + + ac = container_of(ref, struct audio_client, refcount); + a = ac->q6asm; + + spin_lock_irqsave(&a->slock, flags); + a->session[ac->session] = NULL; + spin_unlock_irqrestore(&a->slock, flags); + + kfree(ac); +} + +/** + * q6asm_audio_client_free() - Freee allocated audio client + * + * @ac: audio client to free + */ +void q6asm_audio_client_free(struct audio_client *ac) +{ + kref_put(&ac->refcount, q6asm_audio_client_release); +} +EXPORT_SYMBOL_GPL(q6asm_audio_client_free); + +static struct audio_client *q6asm_get_audio_client(struct q6asm *a, + int session_id) +{ + struct audio_client *ac = NULL; + unsigned long flags; + + spin_lock_irqsave(&a->slock, flags); + if ((session_id <= 0) || (session_id > MAX_SESSIONS)) { + dev_err(a->dev, "invalid session: %d\n", session_id); + goto err; + } + + /* check for valid session */ + if (!a->session[session_id]) + goto err; + else if (a->session[session_id]->session != session_id) + goto err; + + ac = a->session[session_id]; + kref_get(&ac->refcount); +err: + spin_unlock_irqrestore(&a->slock, flags); + return ac; +} + +static int q6asm_srvc_callback(struct apr_device *adev, + struct apr_resp_pkt *data) +{ + struct q6asm *q6asm = dev_get_drvdata(&adev->dev); + struct audio_client *ac = NULL; + struct apr_hdr *hdr = &data->hdr; + uint32_t sid = 0; + + sid = (hdr->token >> 8) & 0x0F; + ac = q6asm_get_audio_client(q6asm, sid); + if (!ac) { + dev_err(&adev->dev, "Audio Client not active\n"); + return 0; + } + + if (ac->cb) + ac->cb(hdr->opcode, hdr->token, data->payload, ac->priv); + + kref_put(&ac->refcount, q6asm_audio_client_release); + + return 0; +} + +/** + * q6asm_get_session_id() - get session id for audio client + * + * @c: audio client pointer + * + * Return: Will be an session id of the audio client. + */ +int q6asm_get_session_id(struct audio_client *c) +{ + return c->session; +} +EXPORT_SYMBOL_GPL(q6asm_get_session_id); + +/** + * q6asm_audio_client_alloc() - Allocate a new audio client + * + * @dev: Pointer to asm child device. + * @cb: event callback. + * @priv: private data associated with this client. + * @stream_id: stream id + * @perf_mode: performace mode for this client + * + * Return: Will be an error pointer on error or a valid audio client + * on success. + */ +struct audio_client *q6asm_audio_client_alloc(struct device *dev, q6asm_cb cb, + void *priv, int stream_id, + int perf_mode) +{ + struct q6asm *a = dev_get_drvdata(dev->parent); + struct audio_client *ac; + unsigned long flags; + + ac = q6asm_get_audio_client(a, stream_id + 1); + if (ac) { + dev_err(dev, "Audio Client already active\n"); + return ac; + } + + ac = kzalloc(sizeof(*ac), GFP_KERNEL); + if (!ac) + return ERR_PTR(-ENOMEM); + + spin_lock_irqsave(&a->slock, flags); + a->session[stream_id + 1] = ac; + spin_unlock_irqrestore(&a->slock, flags); + ac->session = stream_id + 1; + ac->cb = cb; + ac->dev = dev; + ac->q6asm = a; + ac->priv = priv; + ac->io_mode = ASM_SYNC_IO_MODE; + ac->perf_mode = perf_mode; + /* DSP expects stream id from 1 */ + ac->stream_id = 1; + ac->adev = a->adev; + kref_init(&ac->refcount); + + init_waitqueue_head(&ac->cmd_wait); + mutex_init(&ac->cmd_lock); + spin_lock_init(&ac->lock); + + return ac; +} +EXPORT_SYMBOL_GPL(q6asm_audio_client_alloc); + + +static int q6asm_probe(struct apr_device *adev) +{ + struct device *dev = &adev->dev; + struct device_node *dais_np; + struct q6asm *q6asm; + + q6asm = devm_kzalloc(dev, sizeof(*q6asm), GFP_KERNEL); + if (!q6asm) + return -ENOMEM; + + q6core_get_svc_api_info(adev->svc_id, &q6asm->ainfo); + + q6asm->dev = dev; + q6asm->adev = adev; + init_waitqueue_head(&q6asm->mem_wait); + spin_lock_init(&q6asm->slock); + dev_set_drvdata(dev, q6asm); + + dais_np = of_get_child_by_name(dev->of_node, "dais"); + if (dais_np) { + q6asm->pdev_dais = of_platform_device_create(dais_np, + "q6asm-dai", dev); + of_node_put(dais_np); + } + + return 0; +} + +static int q6asm_remove(struct apr_device *adev) +{ + struct q6asm *q6asm = dev_get_drvdata(&adev->dev); + + if (q6asm->pdev_dais) + of_platform_device_destroy(&q6asm->pdev_dais->dev, NULL); + + return 0; +} +static const struct of_device_id q6asm_device_id[] = { + { .compatible = "qcom,q6asm" }, + {}, +}; +MODULE_DEVICE_TABLE(of, q6asm_device_id); + +static struct apr_driver qcom_q6asm_driver = { + .probe = q6asm_probe, + .remove = q6asm_remove, + .callback = q6asm_srvc_callback, + .driver = { + .name = "qcom-q6asm", + .of_match_table = of_match_ptr(q6asm_device_id), + }, +}; + +module_apr_driver(qcom_q6asm_driver); +MODULE_DESCRIPTION("Q6 Audio Stream Manager driver"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/qcom/qdsp6/q6asm.h b/sound/soc/qcom/qdsp6/q6asm.h new file mode 100644 index 0000000..b7816e6 --- /dev/null +++ b/sound/soc/qcom/qdsp6/q6asm.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __Q6_ASM_H__ +#define __Q6_ASM_H__ + +#define MAX_SESSIONS 8 + +typedef void (*q6asm_cb) (uint32_t opcode, uint32_t token, + void *payload, void *priv); +struct audio_client; +struct audio_client *q6asm_audio_client_alloc(struct device *dev, + q6asm_cb cb, void *priv, + int session_id, int perf_mode); +void q6asm_audio_client_free(struct audio_client *ac); +int q6asm_get_session_id(struct audio_client *ac); +#endif /* __Q6_ASM_H__ */ -- 2.7.4