diff options
Diffstat (limited to '')
| -rw-r--r-- | sound/soc/qcom/qdsp6/q6prm.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/sound/soc/qcom/qdsp6/q6prm.c b/sound/soc/qcom/qdsp6/q6prm.c new file mode 100644 index 000000000000..cda33ded29be --- /dev/null +++ b/sound/soc/qcom/qdsp6/q6prm.c @@ -0,0 +1,251 @@ +// 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"); |