diff options
| -rw-r--r-- | sound/soc/qcom/Kconfig | 4 | ||||
| -rw-r--r-- | sound/soc/qcom/qdsp6/Makefile | 1 | ||||
| -rw-r--r-- | sound/soc/qcom/qdsp6/q6afe.c | 549 | ||||
| -rw-r--r-- | sound/soc/qcom/qdsp6/q6afe.h | 35 |
4 files changed, 589 insertions, 0 deletions
diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig index 37ee0d958145..bb0a2afb0563 100644 --- a/sound/soc/qcom/Kconfig +++ b/sound/soc/qcom/Kconfig @@ -47,11 +47,15 @@ config SND_SOC_QDSP6_COMMON config SND_SOC_QDSP6_CORE tristate +config SND_SOC_QDSP6_AFE + tristate + config SND_SOC_QDSP6 tristate "SoC ALSA audio driver for QDSP6" depends on QCOM_APR && HAS_DMA select SND_SOC_QDSP6_COMMON select SND_SOC_QDSP6_CORE + select SND_SOC_QDSP6_AFE 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 03b8e89c9731..7ff666bd10ca 100644 --- a/sound/soc/qcom/qdsp6/Makefile +++ b/sound/soc/qcom/qdsp6/Makefile @@ -1,2 +1,3 @@ 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 diff --git a/sound/soc/qcom/qdsp6/q6afe.c b/sound/soc/qcom/qdsp6/q6afe.c new file mode 100644 index 000000000000..5e0032c13aab --- /dev/null +++ b/sound/soc/qcom/qdsp6/q6afe.c @@ -0,0 +1,549 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2011-2017, The Linux Foundation. All rights reserved. +// Copyright (c) 2018, Linaro Limited + +#include <linux/slab.h> +#include <linux/kernel.h> +#include <linux/uaccess.h> +#include <linux/wait.h> +#include <linux/jiffies.h> +#include <linux/sched.h> +#include <linux/module.h> +#include <linux/kref.h> +#include <linux/of.h> +#include <linux/of_platform.h> +#include <linux/spinlock.h> +#include <linux/delay.h> +#include <linux/soc/qcom/apr.h> +#include "q6dsp-errno.h" +#include "q6core.h" +#include "q6afe.h" + +/* AFE CMDs */ +#define AFE_PORT_CMD_DEVICE_START 0x000100E5 +#define AFE_PORT_CMD_DEVICE_STOP 0x000100E6 +#define AFE_PORT_CMD_SET_PARAM_V2 0x000100EF +#define AFE_SVC_CMD_SET_PARAM 0x000100f3 +#define AFE_PORT_CMDRSP_GET_PARAM_V2 0x00010106 +#define AFE_PARAM_ID_HDMI_CONFIG 0x00010210 +#define AFE_MODULE_AUDIO_DEV_INTERFACE 0x0001020C + +/* Port IDs */ +#define AFE_API_VERSION_HDMI_CONFIG 0x1 +#define AFE_PORT_ID_MULTICHAN_HDMI_RX 0x100E +#define TIMEOUT_MS 1000 +#define AFE_CMD_RESP_AVAIL 0 +#define AFE_CMD_RESP_NONE 1 + +struct q6afe { + struct apr_device *apr; + struct device *dev; + struct q6core_svc_api_info ainfo; + struct mutex lock; + struct list_head port_list; + spinlock_t port_list_lock; + struct platform_device *pdev_dais; +}; + +struct afe_port_cmd_device_start { + u16 port_id; + u16 reserved; +} __packed; + +struct afe_port_cmd_device_stop { + u16 port_id; + u16 reserved; +/* Reserved for 32-bit alignment. This field must be set to 0.*/ +} __packed; + +struct afe_port_param_data_v2 { + u32 module_id; + u32 param_id; + u16 param_size; + u16 reserved; +} __packed; + +struct afe_port_cmd_set_param_v2 { + u16 port_id; + u16 payload_size; + u32 payload_address_lsw; + u32 payload_address_msw; + u32 mem_map_handle; +} __packed; + +struct afe_param_id_hdmi_multi_chan_audio_cfg { + u32 hdmi_cfg_minor_version; + u16 datatype; + u16 channel_allocation; + u32 sample_rate; + u16 bit_width; + u16 reserved; +} __packed; + +union afe_port_config { + struct afe_param_id_hdmi_multi_chan_audio_cfg hdmi_multi_ch; +} __packed; + +struct q6afe_port { + wait_queue_head_t wait; + union afe_port_config port_cfg; + struct aprv2_ibasic_rsp_result_t result; + int token; + int id; + int cfg_type; + struct q6afe *afe; + struct kref refcount; + struct list_head node; +}; + +struct afe_port_map { + int port_id; + int token; + int is_rx; + int is_dig_pcm; +}; + +/* + * Mapping between Virtual Port IDs to DSP AFE Port ID + * On B Family SoCs DSP Port IDs are consistent across multiple SoCs + * on A Family SoCs DSP port IDs are same as virtual Port IDs. + */ + +static struct afe_port_map port_maps[AFE_PORT_MAX] = { + [HDMI_RX] = { AFE_PORT_ID_MULTICHAN_HDMI_RX, HDMI_RX, 1, 1}, +}; + +static void q6afe_port_free(struct kref *ref) +{ + struct q6afe_port *port; + struct q6afe *afe; + unsigned long flags; + + port = container_of(ref, struct q6afe_port, refcount); + afe = port->afe; + spin_lock_irqsave(&afe->port_list_lock, flags); + list_del(&port->node); + spin_unlock_irqrestore(&afe->port_list_lock, flags); + kfree(port); +} + +static struct q6afe_port *q6afe_find_port(struct q6afe *afe, int token) +{ + struct q6afe_port *p = NULL; + struct q6afe_port *ret = NULL; + unsigned long flags; + + spin_lock_irqsave(&afe->port_list_lock, flags); + list_for_each_entry(p, &afe->port_list, node) + if (p->token == token) { + ret = p; + kref_get(&p->refcount); + break; + } + + spin_unlock_irqrestore(&afe->port_list_lock, flags); + return ret; +} + +static int q6afe_callback(struct apr_device *adev, struct apr_resp_pkt *data) +{ + struct q6afe *afe = dev_get_drvdata(&adev->dev); + struct aprv2_ibasic_rsp_result_t *res; + struct apr_hdr *hdr = &data->hdr; + struct q6afe_port *port; + + if (!data->payload_size) + return 0; + + res = data->payload; + switch (hdr->opcode) { + case APR_BASIC_RSP_RESULT: { + if (res->status) { + dev_err(afe->dev, "cmd = 0x%x returned error = 0x%x\n", + res->opcode, res->status); + } + switch (res->opcode) { + case AFE_PORT_CMD_SET_PARAM_V2: + case AFE_PORT_CMD_DEVICE_STOP: + case AFE_PORT_CMD_DEVICE_START: + case AFE_SVC_CMD_SET_PARAM: + port = q6afe_find_port(afe, hdr->token); + if (port) { + port->result = *res; + wake_up(&port->wait); + kref_put(&port->refcount, q6afe_port_free); + } + break; + default: + dev_err(afe->dev, "Unknown cmd 0x%x\n", res->opcode); + break; + } + } + break; + default: + break; + } + + return 0; +} + +/** + * q6afe_get_port_id() - Get port id from a given port index + * + * @index: port index + * + * Return: Will be an negative on error or valid port_id on success + */ +int q6afe_get_port_id(int index) +{ + if (index < 0 || index > AFE_PORT_MAX) + return -EINVAL; + + return port_maps[index].port_id; +} +EXPORT_SYMBOL_GPL(q6afe_get_port_id); + +static int afe_apr_send_pkt(struct q6afe *afe, struct apr_pkt *pkt, + struct q6afe_port *port) +{ + wait_queue_head_t *wait = &port->wait; + struct apr_hdr *hdr = &pkt->hdr; + int ret; + + mutex_lock(&afe->lock); + port->result.opcode = 0; + port->result.status = 0; + + ret = apr_send_pkt(afe->apr, pkt); + if (ret < 0) { + dev_err(afe->dev, "packet not transmitted (%d)\n", ret); + ret = -EINVAL; + goto err; + } + + ret = wait_event_timeout(*wait, (port->result.opcode == hdr->opcode), + msecs_to_jiffies(TIMEOUT_MS)); + if (!ret) { + ret = -ETIMEDOUT; + } else if (port->result.status > 0) { + dev_err(afe->dev, "DSP returned error[%x]\n", + port->result.status); + ret = -EINVAL; + } else { + ret = 0; + } + +err: + mutex_unlock(&afe->lock); + + return ret; +} + +static int q6afe_port_set_param_v2(struct q6afe_port *port, void *data, + int param_id, int module_id, int psize) +{ + struct afe_port_cmd_set_param_v2 *param; + struct afe_port_param_data_v2 *pdata; + struct q6afe *afe = port->afe; + struct apr_pkt *pkt; + u16 port_id = port->id; + int ret, pkt_size; + void *p, *pl; + + pkt_size = APR_HDR_SIZE + sizeof(*param) + sizeof(*pdata) + psize; + p = kzalloc(pkt_size, GFP_KERNEL); + if (!p) + return -ENOMEM; + + pkt = p; + param = p + APR_HDR_SIZE; + pdata = p + APR_HDR_SIZE + sizeof(*param); + pl = p + APR_HDR_SIZE + sizeof(*param) + sizeof(*pdata); + memcpy(pl, data, psize); + + pkt->hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD, + APR_HDR_LEN(APR_HDR_SIZE), + APR_PKT_VER); + pkt->hdr.pkt_size = pkt_size; + pkt->hdr.src_port = 0; + pkt->hdr.dest_port = 0; + pkt->hdr.token = port->token; + pkt->hdr.opcode = AFE_PORT_CMD_SET_PARAM_V2; + + param->port_id = port_id; + param->payload_size = sizeof(*pdata) + psize; + param->payload_address_lsw = 0x00; + param->payload_address_msw = 0x00; + param->mem_map_handle = 0x00; + pdata->module_id = module_id; + pdata->param_id = param_id; + pdata->param_size = psize; + + ret = afe_apr_send_pkt(afe, pkt, port); + if (ret) + dev_err(afe->dev, "AFE enable for port 0x%x failed %d\n", + port_id, ret); + + kfree(pkt); + return ret; +} + +/** + * q6afe_port_stop() - Stop a afe port + * + * @port: Instance of port to stop + * + * Return: Will be an negative on packet size on success. + */ +int q6afe_port_stop(struct q6afe_port *port) +{ + struct afe_port_cmd_device_stop *stop; + struct q6afe *afe = port->afe; + struct apr_pkt *pkt; + int port_id = port->id; + int ret = 0; + int index, pkt_size; + void *p; + + port_id = port->id; + index = port->token; + if (index < 0 || index > AFE_PORT_MAX) { + dev_err(afe->dev, "AFE port index[%d] invalid!\n", index); + return -EINVAL; + } + + pkt_size = APR_HDR_SIZE + sizeof(*stop); + p = kzalloc(pkt_size, GFP_KERNEL); + if (!p) + return -ENOMEM; + + pkt = p; + stop = p + APR_HDR_SIZE; + + pkt->hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD, + APR_HDR_LEN(APR_HDR_SIZE), + APR_PKT_VER); + pkt->hdr.pkt_size = pkt_size; + pkt->hdr.src_port = 0; + pkt->hdr.dest_port = 0; + pkt->hdr.token = index; + pkt->hdr.opcode = AFE_PORT_CMD_DEVICE_STOP; + stop->port_id = port_id; + stop->reserved = 0; + + ret = afe_apr_send_pkt(afe, pkt, port); + if (ret) + dev_err(afe->dev, "AFE close failed %d\n", ret); + + kfree(pkt); + return ret; +} +EXPORT_SYMBOL_GPL(q6afe_port_stop); + +/** + * q6afe_hdmi_port_prepare() - Prepare hdmi afe port. + * + * @port: Instance of afe port + * @cfg: HDMI configuration for the afe port + * + */ +void q6afe_hdmi_port_prepare(struct q6afe_port *port, + struct q6afe_hdmi_cfg *cfg) +{ + union afe_port_config *pcfg = &port->port_cfg; + + pcfg->hdmi_multi_ch.hdmi_cfg_minor_version = + AFE_API_VERSION_HDMI_CONFIG; + pcfg->hdmi_multi_ch.datatype = cfg->datatype; + pcfg->hdmi_multi_ch.channel_allocation = cfg->channel_allocation; + pcfg->hdmi_multi_ch.sample_rate = cfg->sample_rate; + pcfg->hdmi_multi_ch.bit_width = cfg->bit_width; +} +EXPORT_SYMBOL_GPL(q6afe_hdmi_port_prepare); + +/** + * q6afe_port_start() - Start a afe port + * + * @port: Instance of port to start + * + * Return: Will be an negative on packet size on success. + */ +int q6afe_port_start(struct q6afe_port *port) +{ + struct afe_port_cmd_device_start *start; + struct q6afe *afe = port->afe; + int port_id = port->id; + int ret, param_id = port->cfg_type; + struct apr_pkt *pkt; + int pkt_size; + void *p; + + ret = q6afe_port_set_param_v2(port, &port->port_cfg, param_id, + AFE_MODULE_AUDIO_DEV_INTERFACE, + sizeof(port->port_cfg)); + if (ret) { + dev_err(afe->dev, "AFE enable for port 0x%x failed %d\n", + port_id, ret); + return ret; + } + + pkt_size = APR_HDR_SIZE + sizeof(*start); + p = kzalloc(pkt_size, GFP_KERNEL); + if (!p) + return -ENOMEM; + + pkt = p; + start = p + APR_HDR_SIZE; + + pkt->hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD, + APR_HDR_LEN(APR_HDR_SIZE), + APR_PKT_VER); + pkt->hdr.pkt_size = pkt_size; + pkt->hdr.src_port = 0; + pkt->hdr.dest_port = 0; + pkt->hdr.token = port->token; + pkt->hdr.opcode = AFE_PORT_CMD_DEVICE_START; + + start->port_id = port_id; + + ret = afe_apr_send_pkt(afe, pkt, port); + if (ret) + dev_err(afe->dev, "AFE enable for port 0x%x failed %d\n", + port_id, ret); + + kfree(pkt); + return ret; +} +EXPORT_SYMBOL_GPL(q6afe_port_start); + +/** + * q6afe_port_get_from_id() - Get port instance from a port id + * + * @dev: Pointer to afe child device. + * @id: port id + * + * Return: Will be an error pointer on error or a valid afe port + * on success. + */ +struct q6afe_port *q6afe_port_get_from_id(struct device *dev, int id) +{ + int port_id; + struct q6afe *afe = dev_get_drvdata(dev->parent); + struct q6afe_port *port; + unsigned long flags; + int cfg_type; + + if (id < 0 || id > AFE_PORT_MAX) { + dev_err(dev, "AFE port token[%d] invalid!\n", id); + return ERR_PTR(-EINVAL); + } + + /* if port is multiple times bind/unbind before callback finishes */ + port = q6afe_find_port(afe, id); + if (port) { + dev_err(dev, "AFE Port already open\n"); + return port; + } + + port_id = port_maps[id].port_id; + + switch (port_id) { + case AFE_PORT_ID_MULTICHAN_HDMI_RX: + cfg_type = AFE_PARAM_ID_HDMI_CONFIG; + break; + default: + dev_err(dev, "Invalid port id 0x%x\n", port_id); + return ERR_PTR(-EINVAL); + } + + port = kzalloc(sizeof(*port), GFP_KERNEL); + if (!port) + return ERR_PTR(-ENOMEM); + + init_waitqueue_head(&port->wait); + + port->token = id; + port->id = port_id; + port->afe = afe; + port->cfg_type = cfg_type; + kref_init(&port->refcount); + + spin_lock_irqsave(&afe->port_list_lock, flags); + list_add_tail(&port->node, &afe->port_list); + spin_unlock_irqrestore(&afe->port_list_lock, flags); + + return port; + +} +EXPORT_SYMBOL_GPL(q6afe_port_get_from_id); + +/** + * q6afe_port_put() - Release port reference + * + * @port: Instance of port to put + */ +void q6afe_port_put(struct q6afe_port *port) +{ + kref_put(&port->refcount, q6afe_port_free); +} +EXPORT_SYMBOL_GPL(q6afe_port_put); + +static int q6afe_probe(struct apr_device *adev) +{ + struct q6afe *afe; + struct device *dev = &adev->dev; + struct device_node *dais_np; + + afe = devm_kzalloc(dev, sizeof(*afe), GFP_KERNEL); + if (!afe) + return -ENOMEM; + + q6core_get_svc_api_info(adev->svc_id, &afe->ainfo); + afe->apr = adev; + mutex_init(&afe->lock); + afe->dev = dev; + INIT_LIST_HEAD(&afe->port_list); + spin_lock_init(&afe->port_list_lock); + + dev_set_drvdata(dev, afe); + + dais_np = of_get_child_by_name(dev->of_node, "dais"); + if (dais_np) { + afe->pdev_dais = of_platform_device_create(dais_np, + "q6afe-dai", dev); + of_node_put(dais_np); + } + + return 0; +} + +static int q6afe_remove(struct apr_device *adev) +{ + struct q6afe *afe = dev_get_drvdata(&adev->dev); + + if (afe->pdev_dais) + of_platform_device_destroy(&afe->pdev_dais->dev, NULL); + + return 0; +} + +static const struct of_device_id q6afe_device_id[] = { + { .compatible = "qcom,q6afe" }, + {}, +}; +MODULE_DEVICE_TABLE(of, q6afe_device_id); + +static struct apr_driver qcom_q6afe_driver = { + .probe = q6afe_probe, + .remove = q6afe_remove, + .callback = q6afe_callback, + .driver = { + .name = "qcom-q6afe", + .of_match_table = of_match_ptr(q6afe_device_id), + + }, +}; + +module_apr_driver(qcom_q6afe_driver); +MODULE_DESCRIPTION("Q6 Audio Front End"); +MODULE_LICENSE("GPL v2"); diff --git a/sound/soc/qcom/qdsp6/q6afe.h b/sound/soc/qcom/qdsp6/q6afe.h new file mode 100644 index 000000000000..3bd991a7c42d --- /dev/null +++ b/sound/soc/qcom/qdsp6/q6afe.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __Q6AFE_H__ +#define __Q6AFE_H__ + +#include <dt-bindings/sound/qcom,q6afe.h> + +#define AFE_PORT_MAX 48 + +#define MSM_AFE_PORT_TYPE_RX 0 +#define MSM_AFE_PORT_TYPE_TX 1 +#define AFE_MAX_PORTS AFE_PORT_MAX + +struct q6afe_hdmi_cfg { + u16 datatype; + u16 channel_allocation; + u32 sample_rate; + u16 bit_width; +}; + +struct q6afe_port_config { + struct q6afe_hdmi_cfg hdmi; +}; + +struct q6afe_port; + +struct q6afe_port *q6afe_port_get_from_id(struct device *dev, int id); +int q6afe_port_start(struct q6afe_port *port); +int q6afe_port_stop(struct q6afe_port *port); +void q6afe_port_put(struct q6afe_port *port); +int q6afe_get_port_id(int index); +void q6afe_hdmi_port_prepare(struct q6afe_port *port, + struct q6afe_hdmi_cfg *cfg); + +#endif /* __Q6AFE_H__ */ |