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Subject[PATCH v3 12/25] ASoC: qcom: qdsp6: Add support to Q6CORE
Date
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

This patch adds support to core apr service, which is used to query
status of other static and dynamic services on the dsp.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
sound/soc/qcom/Kconfig | 5 +
sound/soc/qcom/qdsp6/Makefile | 1 +
sound/soc/qcom/qdsp6/q6core.c | 235 ++++++++++++++++++++++++++++++++++++++++++
sound/soc/qcom/qdsp6/q6core.h | 9 ++
4 files changed, 250 insertions(+)
create mode 100644 sound/soc/qcom/qdsp6/q6core.c
create mode 100644 sound/soc/qcom/qdsp6/q6core.h

diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
index a14d960b8fe4..8c2d65e0a28e 100644
--- a/sound/soc/qcom/Kconfig
+++ b/sound/soc/qcom/Kconfig
@@ -60,6 +60,10 @@ config SND_SOC_QDSP6_ASM
tristate
default n

+config SND_SOC_QDSP6_CORE
+ tristate
+ default n
+
config SND_SOC_QDSP6
tristate "SoC ALSA audio driver for QDSP6"
depends on QCOM_APR && HAS_DMA
@@ -67,6 +71,7 @@ config SND_SOC_QDSP6
select SND_SOC_QDSP6_AFE
select SND_SOC_QDSP6_ADM
select SND_SOC_QDSP6_ASM
+ select SND_SOC_QDSP6_CORE
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 eea962315ab3..61f089bc0d25 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_AFE) += q6afe.o
obj-$(CONFIG_SND_SOC_QDSP6_ADM) += q6adm.o
obj-$(CONFIG_SND_SOC_QDSP6_ASM) += q6asm.o
+obj-$(CONFIG_SND_SOC_QDSP6_CORE) += q6core.o
diff --git a/sound/soc/qcom/qdsp6/q6core.c b/sound/soc/qcom/qdsp6/q6core.c
new file mode 100644
index 000000000000..d4a3ff409a34
--- /dev/null
+++ b/sound/soc/qcom/qdsp6/q6core.c
@@ -0,0 +1,235 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2011-2017, The Linux Foundation
+ * Copyright (c) 2018, Linaro Limited
+ */
+
+#include <linux/slab.h>
+#include <linux/wait.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/of.h>
+#include <linux/jiffies.h>
+#include <linux/wait.h>
+#include <linux/soc/qcom/apr.h>
+#include "q6dsp-errno.h"
+
+#define ADSP_STATE_READY_TIMEOUT_MS 3000
+#define Q6_READY_TIMEOUT_MS 100
+#define AVCS_CMD_ADSP_EVENT_GET_STATE 0x0001290C
+#define AVCS_CMDRSP_ADSP_EVENT_GET_STATE 0x0001290D
+#define AVCS_GET_VERSIONS 0x00012905
+#define AVCS_GET_VERSIONS_RSP 0x00012906
+
+struct avcs_svc_info {
+ uint32_t service_id;
+ uint32_t version;
+} __packed;
+
+struct q6core {
+ struct apr_device *adev;
+ wait_queue_head_t wait;
+ uint32_t avcs_state;
+ bool resp_received;
+ uint32_t num_services;
+ struct avcs_svc_info *svcs_info;
+};
+
+struct q6core *core;
+
+static int q6core_callback(struct apr_device *adev,
+ struct apr_client_message *data)
+{
+ struct q6core *core = dev_get_drvdata(&adev->dev);
+ struct aprv2_ibasic_rsp_result_t *result;
+
+ result = data->payload;
+ switch (data->opcode) {
+ case AVCS_GET_VERSIONS_RSP:
+ core->num_services = result->status;
+
+ core->svcs_info = kcalloc(core->num_services,
+ sizeof(*core->svcs_info),
+ GFP_ATOMIC);
+ if (!core->svcs_info)
+ return -ENOMEM;
+
+ /* svc info is after apr result */
+ memcpy(core->svcs_info, result + sizeof(*result),
+ core->num_services * sizeof(*core->svcs_info));
+
+ core->resp_received = true;
+ wake_up(&core->wait);
+
+ break;
+ case AVCS_CMDRSP_ADSP_EVENT_GET_STATE:
+ core->avcs_state = result->opcode;
+
+ core->resp_received = true;
+ wake_up(&core->wait);
+ break;
+ default:
+ dev_err(&adev->dev, "Message id from adsp core svc: 0x%x\n",
+ data->opcode);
+ break;
+ }
+
+ return 0;
+}
+
+static int q6core_get_svc_versions(struct q6core *core)
+{
+ struct apr_device *adev = core->adev;
+ struct apr_hdr hdr = {0};
+ int rc;
+
+ hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD,
+ APR_HDR_LEN(APR_HDR_SIZE), APR_PKT_VER);
+ hdr.pkt_size = APR_HDR_SIZE;
+ hdr.opcode = AVCS_GET_VERSIONS;
+
+ rc = apr_send_pkt(adev, &hdr);
+ if (rc < 0)
+ return rc;
+
+ rc = wait_event_timeout(core->wait, (core->resp_received),
+ msecs_to_jiffies(Q6_READY_TIMEOUT_MS));
+ if (rc > 0 && core->resp_received) {
+ core->resp_received = false;
+ return 0;
+ }
+
+ return rc;
+}
+
+static bool __q6core_is_adsp_ready(struct q6core *core)
+{
+ struct apr_device *adev = core->adev;
+ struct apr_hdr hdr = {0};
+ int rc;
+
+ hdr.hdr_field = APR_HDR_FIELD(APR_MSG_TYPE_SEQ_CMD,
+ APR_HDR_LEN(APR_HDR_SIZE), APR_PKT_VER);
+ hdr.pkt_size = APR_HDR_SIZE;
+ hdr.opcode = AVCS_CMD_ADSP_EVENT_GET_STATE;
+
+ rc = apr_send_pkt(adev, &hdr);
+ if (rc < 0)
+ return false;
+
+ rc = wait_event_timeout(core->wait, (core->resp_received),
+ msecs_to_jiffies(Q6_READY_TIMEOUT_MS));
+ if (rc > 0 && core->resp_received) {
+ core->resp_received = false;
+ if (core->avcs_state == 0x1)
+ return true;
+ }
+
+ return false;
+}
+
+/**
+ * q6core_get_svc_version() - Get version number of a service.
+ *
+ * @svc_id: service id of the service.
+ *
+ * Return: Will be a valid version number on success and zero on failure.
+ * version number returned contains bits 0 to 15 as Minor version number
+ * Bits 16 to 31 as Major version number
+ */
+uint32_t q6core_get_svc_version(int svc_id)
+{
+ struct apr_device *adev;
+ struct avcs_svc_info *svcs_info;
+ int i, ret;
+
+ if (!core)
+ return 0;
+
+ if (!core->svcs_info) {
+ ret = q6core_get_svc_versions(core);
+ if (ret)
+ return ret;
+ }
+
+ adev = core->adev;
+ svcs_info = core->svcs_info;
+
+ for (i = 0; i < core->num_services; i++)
+ if (svcs_info[i].service_id == svc_id)
+ return svcs_info[i].version;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(q6core_get_svc_version);
+
+/**
+ * q6core_is_adsp_ready() - Get status of adsp
+ *
+ * Return: Will be an true if adsp is ready and false if not.
+ */
+bool q6core_is_adsp_ready(void)
+{
+ unsigned long timeout;
+
+ if (!core)
+ return false;
+
+ timeout = jiffies + msecs_to_jiffies(ADSP_STATE_READY_TIMEOUT_MS);
+ for (;;) {
+ if (__q6core_is_adsp_ready(core))
+ return true;
+
+ if (!time_after(timeout, jiffies))
+ return false;
+ }
+
+ return false;
+}
+EXPORT_SYMBOL_GPL(q6core_is_adsp_ready);
+
+static int q6core_probe(struct apr_device *adev)
+{
+ core = kzalloc(sizeof(*core), GFP_KERNEL);
+ if (!core)
+ return -ENOMEM;
+
+ dev_set_drvdata(&adev->dev, core);
+
+ core->adev = adev;
+ init_waitqueue_head(&core->wait);
+
+ return 0;
+}
+
+static int q6core_exit(struct apr_device *adev)
+{
+ if (core->svcs_info)
+ kfree(core->svcs_info);
+
+ kfree(core);
+ core = NULL;
+
+ return 0;
+}
+
+static const struct of_device_id q6core_device_id[] = {
+ { .compatible = "qcom,q6core" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, q6core_device_id);
+
+static struct apr_driver qcom_q6core_driver = {
+ .probe = q6core_probe,
+ .remove = q6core_exit,
+ .callback = q6core_callback,
+ .driver = {
+ .name = "qcom-q6core",
+ .of_match_table = of_match_ptr(q6core_device_id),
+ },
+};
+
+module_apr_driver(qcom_q6core_driver);
+MODULE_DESCRIPTION("q6 core");
+MODULE_LICENSE("GPL v2");
diff --git a/sound/soc/qcom/qdsp6/q6core.h b/sound/soc/qcom/qdsp6/q6core.h
new file mode 100644
index 000000000000..2852fbb7756e
--- /dev/null
+++ b/sound/soc/qcom/qdsp6/q6core.h
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#ifndef __Q6CORE_H__
+#define __Q6CORE_H__
+
+bool q6core_is_adsp_ready(void);
+uint32_t q6core_get_svc_version(int svc_id);
+
+#endif /* __Q6CORE_H__ */
--
2.15.1
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