[PATCH v3 19/20] ASoC: qdsp6: audioreach: add q6prm support
Srinivas Kandagatla
srinivas.kandagatla at linaro.org
Tue Aug 3 14:54:10 CEST 2021
Add support to q6prm (Proxy Resource Manager) module used for clock resources
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla at linaro.org>
---
sound/soc/qcom/Kconfig | 4 +
sound/soc/qcom/qdsp6/Makefile | 2 +
sound/soc/qcom/qdsp6/q6prm.c | 256 ++++++++++++++++++++++++++++++++++
3 files changed, 262 insertions(+)
create mode 100644 sound/soc/qcom/qdsp6/q6prm.c
diff --git a/sound/soc/qcom/Kconfig b/sound/soc/qcom/Kconfig
index a2540a28b482..e9155c4022b4 100644
--- a/sound/soc/qcom/Kconfig
+++ b/sound/soc/qcom/Kconfig
@@ -109,12 +109,16 @@ config SND_SOC_QDSP6_APM_DAI
config SND_SOC_QDSP6_APM_BEDAI
tristate
+config SND_SOC_QDSP6_PRM
+ tristate
+
config SND_SOC_QDSP6_AUDIOREACH
tristate "SoC ALSA audio drives for Qualcomm QDSP AUDIOREACH Framework"
depends on QCOM_GPR
select SND_SOC_TOPOLOGY
select SND_SOC_QDSP6_APM_DAI
select SND_SOC_QDSP6_APM_BEDAI
+ select SND_SOC_QDSP6_PRM
help
To add support for Qualcomm QDSP6 AudioReach Audio Framework.
This will enable sound soc platform specific audio drivers.
diff --git a/sound/soc/qcom/qdsp6/Makefile b/sound/soc/qcom/qdsp6/Makefile
index d62f85b3f18a..0388b1c10eb1 100644
--- a/sound/soc/qcom/qdsp6/Makefile
+++ b/sound/soc/qcom/qdsp6/Makefile
@@ -2,6 +2,7 @@
snd-ar-objs := audioreach.o q6apm.o topology.o
snd-apm-dai-objs := q6apm-dai.o
snd-apm-bedai-objs := q6dsp-audio-ports.o q6apm-bedai.o
+snd-prm-objs := q6prm.o
snd-afe-dai-objs += q6dsp-audio-ports.o q6afe-dai.o
snd-afe-clks-objs := q6dsp-audio-clocks.o q6afe-clocks.o
@@ -19,3 +20,4 @@ obj-$(CONFIG_SND_SOC_QDSP6_ASM_DAI) += q6asm-dai.o
obj-$(CONFIG_SND_SOC_QDSP6_AUDIOREACH) += snd-ar.o
obj-$(CONFIG_SND_SOC_QDSP6_APM_DAI) += snd-apm-dai.o
obj-$(CONFIG_SND_SOC_QDSP6_APM_BEDAI) += snd-apm-bedai.o
+obj-$(CONFIG_SND_SOC_QDSP6_PRM) += snd-prm.o
diff --git a/sound/soc/qcom/qdsp6/q6prm.c b/sound/soc/qcom/qdsp6/q6prm.c
new file mode 100644
index 000000000000..6836646fea17
--- /dev/null
+++ b/sound/soc/qcom/qdsp6/q6prm.c
@@ -0,0 +1,256 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2021, Linaro Limited
+
+#include <linux/slab.h>
+#include <linux/wait.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/delay.h>
+#include <linux/of_platform.h>
+#include <linux/jiffies.h>
+#include <linux/soc/qcom/apr.h>
+#include <dt-bindings/soc/qcom,gpr.h>
+#include <dt-bindings/sound/qcom,q6dsp-audio-ports.h>
+#include "q6prm.h"
+#include "audioreach.h"
+
+struct q6prm {
+ struct device *dev;
+ gpr_device_t *gdev;
+ wait_queue_head_t wait;
+ struct gpr_ibasic_rsp_result_t result;
+ struct mutex lock;
+};
+
+#define PRM_CMD_REQUEST_HW_RSC 0x0100100F
+#define PRM_CMD_RSP_REQUEST_HW_RSC 0x02001002
+#define PRM_CMD_RELEASE_HW_RSC 0x01001010
+#define PRM_CMD_RSP_RELEASE_HW_RSC 0x02001003
+
+#define PARAM_ID_RSC_HW_CORE 0x08001032
+#define PARAM_ID_RSC_LPASS_CORE 0x0800102B
+#define PARAM_ID_RSC_AUDIO_HW_CLK 0x0800102C
+
+#define LPAIF_DIG_CLK 1
+#define LPAIF_BIT_CLK 2
+#define LPAIF_OSR_CLK 3
+
+struct prm_cmd_request_hw_core {
+ struct apm_module_param_data param_data;
+ uint32_t hw_clk_id;
+} __packed;
+
+struct prm_cmd_request_rsc {
+ struct apm_module_param_data param_data;
+ uint32_t num_clk_id;
+ struct audio_hw_clk_cfg clock_ids[1];
+} __packed;
+
+struct prm_cmd_release_rsc {
+ struct apm_module_param_data param_data;
+ uint32_t num_clk_id;
+ struct audio_hw_clk_cfg clock_ids[1];
+} __packed;
+
+static int q6prm_send_cmd_sync(struct q6prm *prm, struct gpr_pkt *pkt,
+ uint32_t rsp_opcode)
+{
+ gpr_device_t *gdev = prm->gdev;
+ struct gpr_hdr *hdr = &pkt->hdr;
+ int rc;
+
+ mutex_lock(&prm->lock);
+ prm->result.opcode = 0;
+ prm->result.status = 0;
+
+ rc = gpr_send_pkt(prm->gdev, pkt);
+ if (rc < 0)
+ goto err;
+
+ if (rsp_opcode)
+ rc = wait_event_timeout(prm->wait,
+ (prm->result.opcode == hdr->opcode) ||
+ (prm->result.opcode == rsp_opcode),
+ 5 * HZ);
+ else
+ rc = wait_event_timeout(prm->wait,
+ (prm->result.opcode == hdr->opcode),
+ 5 * HZ);
+
+ if (!rc) {
+ dev_err(&gdev->dev, "CMD timeout for [%x] opcode\n",
+ hdr->opcode);
+ rc = -ETIMEDOUT;
+ } else if (prm->result.status > 0) {
+ dev_err(&gdev->dev, "DSP returned error[%x] %x\n", hdr->opcode,
+ prm->result.status);
+ rc = -EINVAL;
+ } else {
+ dev_err(&gdev->dev, "DSP returned [%x]\n",
+ prm->result.status);
+ rc = 0;
+ }
+
+err:
+ mutex_unlock(&prm->lock);
+ return rc;
+}
+
+static int q6prm_set_hw_core_req(struct device *dev, uint32_t hw_block_id, bool enable)
+{
+ struct prm_cmd_request_hw_core *req;
+ struct apm_module_param_data *param_data;
+ struct gpr_pkt *pkt;
+ struct q6prm *prm = dev_get_drvdata(dev->parent);
+ gpr_device_t *gdev = prm->gdev;
+ void *p;
+ int rc = 0;
+ uint32_t opcode, rsp_opcode;
+
+ if (enable) {
+ opcode = PRM_CMD_REQUEST_HW_RSC;
+ rsp_opcode = PRM_CMD_RSP_REQUEST_HW_RSC;
+ } else {
+ opcode = PRM_CMD_RELEASE_HW_RSC;
+ rsp_opcode = PRM_CMD_RSP_RELEASE_HW_RSC;
+ }
+
+ p = audioreach_alloc_cmd_pkt(sizeof(*req), opcode, 0, gdev->svc.id,
+ GPR_PRM_MODULE_IID);
+ if (IS_ERR(p))
+ return -ENOMEM;
+
+ pkt = p;
+ req = p + GPR_HDR_SIZE + APM_CMD_HDR_SIZE;
+
+ param_data = &req->param_data;
+
+ param_data->module_instance_id = GPR_PRM_MODULE_IID;
+ param_data->error_code = 0;
+ param_data->param_id = PARAM_ID_RSC_HW_CORE;
+ param_data->param_size = sizeof(*req) - APM_MODULE_PARAM_DATA_SIZE;
+
+ req->hw_clk_id = hw_block_id;
+
+ q6prm_send_cmd_sync(prm, pkt, rsp_opcode);
+
+ kfree(pkt);
+
+ return rc;
+}
+
+int q6prm_vote_lpass_core_hw(struct device *dev, uint32_t hw_block_id,
+ const char *client_name, uint32_t *client_handle)
+{
+ return q6prm_set_hw_core_req(dev, hw_block_id, true);
+
+}
+EXPORT_SYMBOL_GPL(q6prm_vote_lpass_core_hw);
+
+int q6prm_unvote_lpass_core_hw(struct device *dev, uint32_t hw_block_id,
+ uint32_t client_handle)
+{
+ return q6prm_set_hw_core_req(dev, hw_block_id, false);
+}
+EXPORT_SYMBOL_GPL(q6prm_unvote_lpass_core_hw);
+
+int q6prm_set_lpass_clock(struct device *dev, int clk_id, int clk_attr,
+ int clk_root, unsigned int freq)
+{
+ struct prm_cmd_request_rsc *req;
+ struct apm_module_param_data *param_data;
+ struct gpr_pkt *pkt;
+ struct q6prm *prm = dev_get_drvdata(dev->parent);
+ gpr_device_t *gdev = prm->gdev;
+ void *p;
+ int rc = 0;
+
+ p = audioreach_alloc_cmd_pkt(sizeof(*req), PRM_CMD_REQUEST_HW_RSC,
+ 0, gdev->svc.id, GPR_PRM_MODULE_IID);
+ if (IS_ERR(p))
+ return -ENOMEM;
+
+ pkt = p;
+ req = p + GPR_HDR_SIZE + APM_CMD_HDR_SIZE;
+
+ param_data = &req->param_data;
+
+ param_data->module_instance_id = GPR_PRM_MODULE_IID;
+ param_data->error_code = 0;
+ param_data->param_id = PARAM_ID_RSC_AUDIO_HW_CLK;
+ param_data->param_size = sizeof(*req) - APM_MODULE_PARAM_DATA_SIZE;
+
+ req->num_clk_id = 1;
+ req->clock_ids[0].clock_id = clk_id;
+ req->clock_ids[0].clock_freq = freq;
+ req->clock_ids[0].clock_attri = clk_attr;
+ req->clock_ids[0].clock_root = clk_root;
+
+ q6prm_send_cmd_sync(prm, pkt, PRM_CMD_RSP_REQUEST_HW_RSC);
+
+ kfree(pkt);
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(q6prm_set_lpass_clock);
+
+static int prm_callback(struct gpr_resp_pkt *data, void *priv, int op)
+{
+ gpr_device_t *gdev = priv;
+ struct q6prm *prm = dev_get_drvdata(&gdev->dev);
+ struct gpr_ibasic_rsp_result_t *result;
+ struct gpr_hdr *hdr = &data->hdr;
+
+ result = data->payload;
+
+ switch (hdr->opcode) {
+ case PRM_CMD_RSP_REQUEST_HW_RSC:
+ case PRM_CMD_RSP_RELEASE_HW_RSC:
+ prm->result.opcode = hdr->opcode;
+ prm->result.status = result->status;
+ wake_up(&prm->wait);
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int prm_probe(gpr_device_t *gdev)
+{
+ struct device *dev = &gdev->dev;
+ struct q6prm *cc;
+
+ cc = devm_kzalloc(dev, sizeof(*cc), GFP_KERNEL);
+ if (!cc)
+ return -ENOMEM;
+
+ cc->dev = dev;
+ cc->gdev = gdev;
+ mutex_init(&cc->lock);
+ init_waitqueue_head(&cc->wait);
+ dev_set_drvdata(dev, cc);
+
+ return devm_of_platform_populate(dev);
+}
+
+static const struct of_device_id prm_device_id[] = {
+ { .compatible = "qcom,q6prm" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, prm_device_id);
+
+static gpr_driver_t prm_driver = {
+ .probe = prm_probe,
+ .gpr_callback = prm_callback,
+ .driver = {
+ .name = "qcom-prm",
+ .of_match_table = of_match_ptr(prm_device_id),
+ },
+};
+
+module_gpr_driver(prm_driver);
+MODULE_DESCRIPTION("Audio Process Manager");
+MODULE_LICENSE("GPL v2");
--
2.21.0
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