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// 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-lpass-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
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_id;
} __packed;
struct prm_cmd_release_rsc {
struct apm_module_param_data param_data;
uint32_t num_clk_id;
struct audio_hw_clk_rel_cfg clock_id;
} __packed;
static int q6prm_send_cmd_sync(struct q6prm *prm, struct gpr_pkt *pkt, uint32_t rsp_opcode)
{
return audioreach_send_cmd_sync(prm->dev, prm->gdev, &prm->result, &prm->lock,
NULL, &prm->wait, pkt, rsp_opcode);
}
static int q6prm_set_hw_core_req(struct device *dev, uint32_t hw_block_id, bool enable)
{
struct q6prm *prm = dev_get_drvdata(dev->parent);
struct apm_module_param_data *param_data;
struct prm_cmd_request_hw_core *req;
gpr_device_t *gdev = prm->gdev;
uint32_t opcode, rsp_opcode;
struct gpr_pkt *pkt;
int rc;
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;
}
pkt = audioreach_alloc_cmd_pkt(sizeof(*req), opcode, 0, gdev->svc.id, GPR_PRM_MODULE_IID);
if (IS_ERR(pkt))
return PTR_ERR(pkt);
req = (void *)pkt + 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;
rc = 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);
static int q6prm_request_lpass_clock(struct device *dev, int clk_id, int clk_attr, int clk_root,
unsigned int freq)
{
struct q6prm *prm = dev_get_drvdata(dev->parent);
struct apm_module_param_data *param_data;
struct prm_cmd_request_rsc *req;
gpr_device_t *gdev = prm->gdev;
struct gpr_pkt *pkt;
int rc;
pkt = audioreach_alloc_cmd_pkt(sizeof(*req), PRM_CMD_REQUEST_HW_RSC, 0, gdev->svc.id,
GPR_PRM_MODULE_IID);
if (IS_ERR(pkt))
return PTR_ERR(pkt);
req = (void *)pkt + 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_id.clock_id = clk_id;
req->clock_id.clock_freq = freq;
req->clock_id.clock_attri = clk_attr;
req->clock_id.clock_root = clk_root;
rc = q6prm_send_cmd_sync(prm, pkt, PRM_CMD_RSP_REQUEST_HW_RSC);
kfree(pkt);
return rc;
}
static int q6prm_release_lpass_clock(struct device *dev, int clk_id, int clk_attr, int clk_root,
unsigned int freq)
{
struct q6prm *prm = dev_get_drvdata(dev->parent);
struct apm_module_param_data *param_data;
struct prm_cmd_release_rsc *rel;
gpr_device_t *gdev = prm->gdev;
struct gpr_pkt *pkt;
int rc;
pkt = audioreach_alloc_cmd_pkt(sizeof(*rel), PRM_CMD_RELEASE_HW_RSC, 0, gdev->svc.id,
GPR_PRM_MODULE_IID);
if (IS_ERR(pkt))
return PTR_ERR(pkt);
rel = (void *)pkt + GPR_HDR_SIZE + APM_CMD_HDR_SIZE;
param_data = &rel->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(*rel) - APM_MODULE_PARAM_DATA_SIZE;
rel->num_clk_id = 1;
rel->clock_id.clock_id = clk_id;
rc = q6prm_send_cmd_sync(prm, pkt, PRM_CMD_RSP_RELEASE_HW_RSC);
kfree(pkt);
return rc;
}
int q6prm_set_lpass_clock(struct device *dev, int clk_id, int clk_attr, int clk_root,
unsigned int freq)
{
if (freq)
return q6prm_request_lpass_clock(dev, clk_id, clk_attr, clk_attr, freq);
return q6prm_release_lpass_clock(dev, clk_id, clk_attr, clk_attr, freq);
}
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;
switch (hdr->opcode) {
case PRM_CMD_RSP_REQUEST_HW_RSC:
case PRM_CMD_RSP_RELEASE_HW_RSC:
result = data->payload;
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);
}
#ifdef CONFIG_OF
static const struct of_device_id prm_device_id[] = {
{ .compatible = "qcom,q6prm" },
{},
};
MODULE_DEVICE_TABLE(of, prm_device_id);
#endif
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");
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