| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Srinivas Kandagatla | 7726 | 93.88% | 13 | 34.21% |
| Krzysztof Kozlowski | 324 | 3.94% | 9 | 23.68% |
| Peter Ujfalusi | 42 | 0.51% | 1 | 2.63% |
| linyujun | 28 | 0.34% | 1 | 2.63% |
| Björn Andersson | 24 | 0.29% | 1 | 2.63% |
| Sagar Dharia | 22 | 0.27% | 3 | 7.89% |
| Kangjie Lu | 18 | 0.22% | 1 | 2.63% |
| Viken Dadhaniya | 14 | 0.17% | 2 | 5.26% |
| Nishka Dasgupta | 12 | 0.15% | 1 | 2.63% |
| Lad Prabhakar | 7 | 0.09% | 1 | 2.63% |
| Uwe Kleine-König | 4 | 0.05% | 1 | 2.63% |
| Jeff Johnson | 4 | 0.05% | 1 | 2.63% |
| Rikard Falkeborn | 2 | 0.02% | 1 | 2.63% |
| Arnd Bergmann | 2 | 0.02% | 1 | 2.63% |
| Colin Ian King | 1 | 0.01% | 1 | 2.63% |
| Total | 8230 | 38 |
// SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2011-2017, The Linux Foundation. All rights reserved. // Copyright (c) 2018, Linaro Limited #include <linux/irq.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/interrupt.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/dmaengine.h> #include <linux/slimbus.h> #include <linux/delay.h> #include <linux/pm_runtime.h> #include <linux/mutex.h> #include <linux/notifier.h> #include <linux/remoteproc/qcom_rproc.h> #include <linux/of.h> #include <linux/io.h> #include <linux/soc/qcom/qmi.h> #include <linux/soc/qcom/pdr.h> #include <net/sock.h> #include "slimbus.h" /* NGD (Non-ported Generic Device) registers */ #define NGD_CFG 0x0 #define NGD_CFG_ENABLE BIT(0) #define NGD_CFG_RX_MSGQ_EN BIT(1) #define NGD_CFG_TX_MSGQ_EN BIT(2) #define NGD_STATUS 0x4 #define NGD_LADDR BIT(1) #define NGD_RX_MSGQ_CFG 0x8 #define NGD_INT_EN 0x10 #define NGD_INT_RECFG_DONE BIT(24) #define NGD_INT_TX_NACKED_2 BIT(25) #define NGD_INT_MSG_BUF_CONTE BIT(26) #define NGD_INT_MSG_TX_INVAL BIT(27) #define NGD_INT_IE_VE_CHG BIT(28) #define NGD_INT_DEV_ERR BIT(29) #define NGD_INT_RX_MSG_RCVD BIT(30) #define NGD_INT_TX_MSG_SENT BIT(31) #define NGD_INT_STAT 0x14 #define NGD_INT_CLR 0x18 #define DEF_NGD_INT_MASK (NGD_INT_TX_NACKED_2 | NGD_INT_MSG_BUF_CONTE | \ NGD_INT_MSG_TX_INVAL | NGD_INT_IE_VE_CHG | \ NGD_INT_DEV_ERR | NGD_INT_TX_MSG_SENT | \ NGD_INT_RX_MSG_RCVD) /* Slimbus QMI service */ #define SLIMBUS_QMI_SVC_ID 0x0301 #define SLIMBUS_QMI_SVC_V1 1 #define SLIMBUS_QMI_INS_ID 0 #define SLIMBUS_QMI_SELECT_INSTANCE_REQ_V01 0x0020 #define SLIMBUS_QMI_SELECT_INSTANCE_RESP_V01 0x0020 #define SLIMBUS_QMI_POWER_REQ_V01 0x0021 #define SLIMBUS_QMI_POWER_RESP_V01 0x0021 #define SLIMBUS_QMI_CHECK_FRAMER_STATUS_REQ 0x0022 #define SLIMBUS_QMI_CHECK_FRAMER_STATUS_RESP 0x0022 #define SLIMBUS_QMI_POWER_REQ_MAX_MSG_LEN 14 #define SLIMBUS_QMI_POWER_RESP_MAX_MSG_LEN 7 #define SLIMBUS_QMI_SELECT_INSTANCE_REQ_MAX_MSG_LEN 14 #define SLIMBUS_QMI_SELECT_INSTANCE_RESP_MAX_MSG_LEN 7 #define SLIMBUS_QMI_CHECK_FRAMER_STAT_RESP_MAX_MSG_LEN 7 /* QMI response timeout of 500ms */ #define SLIMBUS_QMI_RESP_TOUT 1000 /* User defined commands */ #define SLIM_USR_MC_GENERIC_ACK 0x25 #define SLIM_USR_MC_MASTER_CAPABILITY 0x0 #define SLIM_USR_MC_REPORT_SATELLITE 0x1 #define SLIM_USR_MC_ADDR_QUERY 0xD #define SLIM_USR_MC_ADDR_REPLY 0xE #define SLIM_USR_MC_DEFINE_CHAN 0x20 #define SLIM_USR_MC_DEF_ACT_CHAN 0x21 #define SLIM_USR_MC_CHAN_CTRL 0x23 #define SLIM_USR_MC_RECONFIG_NOW 0x24 #define SLIM_USR_MC_REQ_BW 0x28 #define SLIM_USR_MC_CONNECT_SRC 0x2C #define SLIM_USR_MC_CONNECT_SINK 0x2D #define SLIM_USR_MC_DISCONNECT_PORT 0x2E #define SLIM_USR_MC_REPEAT_CHANGE_VALUE 0x0 #define SLIM_RX_MSGQ_TIMEOUT_VAL 0x10000 #define SLIM_LA_MGR 0xFF #define SLIM_ROOT_FREQ 24576000 #define LADDR_RETRY 5 /* Per spec.max 40 bytes per received message */ #define SLIM_MSGQ_BUF_LEN 40 #define QCOM_SLIM_NGD_DESC_NUM 32 #define SLIM_MSG_ASM_FIRST_WORD(l, mt, mc, dt, ad) \ ((l) | ((mt) << 5) | ((mc) << 8) | ((dt) << 15) | ((ad) << 16)) #define INIT_MX_RETRIES 10 #define DEF_RETRY_MS 10 #define SAT_MAGIC_LSB 0xD9 #define SAT_MAGIC_MSB 0xC5 #define SAT_MSG_VER 0x1 #define SAT_MSG_PROT 0x1 #define to_ngd(d) container_of(d, struct qcom_slim_ngd, dev) struct ngd_reg_offset_data { u32 offset, size; }; static const struct ngd_reg_offset_data ngd_v1_5_offset_info = { .offset = 0x1000, .size = 0x1000, }; enum qcom_slim_ngd_state { QCOM_SLIM_NGD_CTRL_AWAKE, QCOM_SLIM_NGD_CTRL_IDLE, QCOM_SLIM_NGD_CTRL_ASLEEP, QCOM_SLIM_NGD_CTRL_DOWN, }; struct qcom_slim_ngd_qmi { struct qmi_handle qmi; struct sockaddr_qrtr svc_info; struct qmi_handle svc_event_hdl; struct qmi_response_type_v01 resp; struct qmi_handle *handle; struct completion qmi_comp; }; struct qcom_slim_ngd_ctrl; struct qcom_slim_ngd; struct qcom_slim_ngd_dma_desc { struct dma_async_tx_descriptor *desc; struct qcom_slim_ngd_ctrl *ctrl; struct completion *comp; dma_cookie_t cookie; dma_addr_t phys; void *base; }; struct qcom_slim_ngd { struct platform_device *pdev; void __iomem *base; int id; }; struct qcom_slim_ngd_ctrl { struct slim_framer framer; struct slim_controller ctrl; struct qcom_slim_ngd_qmi qmi; struct qcom_slim_ngd *ngd; struct device *dev; void __iomem *base; struct dma_chan *dma_rx_channel; struct dma_chan *dma_tx_channel; struct qcom_slim_ngd_dma_desc rx_desc[QCOM_SLIM_NGD_DESC_NUM]; struct qcom_slim_ngd_dma_desc txdesc[QCOM_SLIM_NGD_DESC_NUM]; struct completion reconf; struct work_struct m_work; struct work_struct ngd_up_work; struct workqueue_struct *mwq; struct completion qmi_up; spinlock_t tx_buf_lock; struct mutex tx_lock; struct mutex ssr_lock; struct notifier_block nb; void *notifier; struct pdr_handle *pdr; enum qcom_slim_ngd_state state; dma_addr_t rx_phys_base; dma_addr_t tx_phys_base; void *rx_base; void *tx_base; int tx_tail; int tx_head; u32 ver; }; enum slimbus_mode_enum_type_v01 { /* To force a 32 bit signed enum. Do not change or use*/ SLIMBUS_MODE_ENUM_TYPE_MIN_ENUM_VAL_V01 = INT_MIN, SLIMBUS_MODE_SATELLITE_V01 = 1, SLIMBUS_MODE_MASTER_V01 = 2, SLIMBUS_MODE_ENUM_TYPE_MAX_ENUM_VAL_V01 = INT_MAX, }; enum slimbus_pm_enum_type_v01 { /* To force a 32 bit signed enum. Do not change or use*/ SLIMBUS_PM_ENUM_TYPE_MIN_ENUM_VAL_V01 = INT_MIN, SLIMBUS_PM_INACTIVE_V01 = 1, SLIMBUS_PM_ACTIVE_V01 = 2, SLIMBUS_PM_ENUM_TYPE_MAX_ENUM_VAL_V01 = INT_MAX, }; enum slimbus_resp_enum_type_v01 { SLIMBUS_RESP_ENUM_TYPE_MIN_VAL_V01 = INT_MIN, SLIMBUS_RESP_SYNCHRONOUS_V01 = 1, SLIMBUS_RESP_ENUM_TYPE_MAX_VAL_V01 = INT_MAX, }; struct slimbus_select_inst_req_msg_v01 { uint32_t instance; uint8_t mode_valid; enum slimbus_mode_enum_type_v01 mode; }; struct slimbus_select_inst_resp_msg_v01 { struct qmi_response_type_v01 resp; }; struct slimbus_power_req_msg_v01 { enum slimbus_pm_enum_type_v01 pm_req; uint8_t resp_type_valid; enum slimbus_resp_enum_type_v01 resp_type; }; struct slimbus_power_resp_msg_v01 { struct qmi_response_type_v01 resp; }; static const struct qmi_elem_info slimbus_select_inst_req_msg_v01_ei[] = { { .data_type = QMI_UNSIGNED_4_BYTE, .elem_len = 1, .elem_size = sizeof(uint32_t), .array_type = NO_ARRAY, .tlv_type = 0x01, .offset = offsetof(struct slimbus_select_inst_req_msg_v01, instance), .ei_array = NULL, }, { .data_type = QMI_OPT_FLAG, .elem_len = 1, .elem_size = sizeof(uint8_t), .array_type = NO_ARRAY, .tlv_type = 0x10, .offset = offsetof(struct slimbus_select_inst_req_msg_v01, mode_valid), .ei_array = NULL, }, { .data_type = QMI_UNSIGNED_4_BYTE, .elem_len = 1, .elem_size = sizeof(enum slimbus_mode_enum_type_v01), .array_type = NO_ARRAY, .tlv_type = 0x10, .offset = offsetof(struct slimbus_select_inst_req_msg_v01, mode), .ei_array = NULL, }, { .data_type = QMI_EOTI, .elem_len = 0, .elem_size = 0, .array_type = NO_ARRAY, .tlv_type = 0x00, .offset = 0, .ei_array = NULL, }, }; static const struct qmi_elem_info slimbus_select_inst_resp_msg_v01_ei[] = { { .data_type = QMI_STRUCT, .elem_len = 1, .elem_size = sizeof(struct qmi_response_type_v01), .array_type = NO_ARRAY, .tlv_type = 0x02, .offset = offsetof(struct slimbus_select_inst_resp_msg_v01, resp), .ei_array = qmi_response_type_v01_ei, }, { .data_type = QMI_EOTI, .elem_len = 0, .elem_size = 0, .array_type = NO_ARRAY, .tlv_type = 0x00, .offset = 0, .ei_array = NULL, }, }; static const struct qmi_elem_info slimbus_power_req_msg_v01_ei[] = { { .data_type = QMI_UNSIGNED_4_BYTE, .elem_len = 1, .elem_size = sizeof(enum slimbus_pm_enum_type_v01), .array_type = NO_ARRAY, .tlv_type = 0x01, .offset = offsetof(struct slimbus_power_req_msg_v01, pm_req), .ei_array = NULL, }, { .data_type = QMI_OPT_FLAG, .elem_len = 1, .elem_size = sizeof(uint8_t), .array_type = NO_ARRAY, .tlv_type = 0x10, .offset = offsetof(struct slimbus_power_req_msg_v01, resp_type_valid), }, { .data_type = QMI_SIGNED_4_BYTE_ENUM, .elem_len = 1, .elem_size = sizeof(enum slimbus_resp_enum_type_v01), .array_type = NO_ARRAY, .tlv_type = 0x10, .offset = offsetof(struct slimbus_power_req_msg_v01, resp_type), }, { .data_type = QMI_EOTI, .elem_len = 0, .elem_size = 0, .array_type = NO_ARRAY, .tlv_type = 0x00, .offset = 0, .ei_array = NULL, }, }; static const struct qmi_elem_info slimbus_power_resp_msg_v01_ei[] = { { .data_type = QMI_STRUCT, .elem_len = 1, .elem_size = sizeof(struct qmi_response_type_v01), .array_type = NO_ARRAY, .tlv_type = 0x02, .offset = offsetof(struct slimbus_power_resp_msg_v01, resp), .ei_array = qmi_response_type_v01_ei, }, { .data_type = QMI_EOTI, .elem_len = 0, .elem_size = 0, .array_type = NO_ARRAY, .tlv_type = 0x00, .offset = 0, .ei_array = NULL, }, }; static int qcom_slim_qmi_send_select_inst_req(struct qcom_slim_ngd_ctrl *ctrl, struct slimbus_select_inst_req_msg_v01 *req) { struct slimbus_select_inst_resp_msg_v01 resp = { { 0, 0 } }; struct qmi_txn txn; int rc; rc = qmi_txn_init(ctrl->qmi.handle, &txn, slimbus_select_inst_resp_msg_v01_ei, &resp); if (rc < 0) { dev_err(ctrl->dev, "QMI TXN init fail: %d\n", rc); return rc; } rc = qmi_send_request(ctrl->qmi.handle, NULL, &txn, SLIMBUS_QMI_SELECT_INSTANCE_REQ_V01, SLIMBUS_QMI_SELECT_INSTANCE_REQ_MAX_MSG_LEN, slimbus_select_inst_req_msg_v01_ei, req); if (rc < 0) { dev_err(ctrl->dev, "QMI send req fail %d\n", rc); qmi_txn_cancel(&txn); return rc; } rc = qmi_txn_wait(&txn, SLIMBUS_QMI_RESP_TOUT); if (rc < 0) { dev_err(ctrl->dev, "QMI TXN wait fail: %d\n", rc); return rc; } /* Check the response */ if (resp.resp.result != QMI_RESULT_SUCCESS_V01) { dev_err(ctrl->dev, "QMI request failed 0x%x\n", resp.resp.result); return -EREMOTEIO; } return 0; } static void qcom_slim_qmi_power_resp_cb(struct qmi_handle *handle, struct sockaddr_qrtr *sq, struct qmi_txn *txn, const void *data) { struct slimbus_power_resp_msg_v01 *resp; resp = (struct slimbus_power_resp_msg_v01 *)data; if (resp->resp.result != QMI_RESULT_SUCCESS_V01) pr_err("QMI power request failed 0x%x\n", resp->resp.result); complete(&txn->completion); } static int qcom_slim_qmi_send_power_request(struct qcom_slim_ngd_ctrl *ctrl, struct slimbus_power_req_msg_v01 *req) { struct slimbus_power_resp_msg_v01 resp = { { 0, 0 } }; struct qmi_txn txn; int rc; rc = qmi_txn_init(ctrl->qmi.handle, &txn, slimbus_power_resp_msg_v01_ei, &resp); rc = qmi_send_request(ctrl->qmi.handle, NULL, &txn, SLIMBUS_QMI_POWER_REQ_V01, SLIMBUS_QMI_POWER_REQ_MAX_MSG_LEN, slimbus_power_req_msg_v01_ei, req); if (rc < 0) { dev_err(ctrl->dev, "QMI send req fail %d\n", rc); qmi_txn_cancel(&txn); return rc; } rc = qmi_txn_wait(&txn, SLIMBUS_QMI_RESP_TOUT); if (rc < 0) { dev_err(ctrl->dev, "QMI TXN wait fail: %d\n", rc); return rc; } /* Check the response */ if (resp.resp.result != QMI_RESULT_SUCCESS_V01) { dev_err(ctrl->dev, "QMI request failed 0x%x\n", resp.resp.result); return -EREMOTEIO; } return 0; } static const struct qmi_msg_handler qcom_slim_qmi_msg_handlers[] = { { .type = QMI_RESPONSE, .msg_id = SLIMBUS_QMI_POWER_RESP_V01, .ei = slimbus_power_resp_msg_v01_ei, .decoded_size = sizeof(struct slimbus_power_resp_msg_v01), .fn = qcom_slim_qmi_power_resp_cb, }, {} }; static int qcom_slim_qmi_init(struct qcom_slim_ngd_ctrl *ctrl, bool apps_is_master) { struct slimbus_select_inst_req_msg_v01 req; struct qmi_handle *handle; int rc; handle = devm_kzalloc(ctrl->dev, sizeof(*handle), GFP_KERNEL); if (!handle) return -ENOMEM; rc = qmi_handle_init(handle, SLIMBUS_QMI_POWER_REQ_MAX_MSG_LEN, NULL, qcom_slim_qmi_msg_handlers); if (rc < 0) { dev_err(ctrl->dev, "QMI client init failed: %d\n", rc); goto qmi_handle_init_failed; } rc = kernel_connect(handle->sock, (struct sockaddr *)&ctrl->qmi.svc_info, sizeof(ctrl->qmi.svc_info), 0); if (rc < 0) { dev_err(ctrl->dev, "Remote Service connect failed: %d\n", rc); goto qmi_connect_to_service_failed; } /* Instance is 0 based */ req.instance = (ctrl->ngd->id >> 1); req.mode_valid = 1; /* Mode indicates the role of the ADSP */ if (apps_is_master) req.mode = SLIMBUS_MODE_SATELLITE_V01; else req.mode = SLIMBUS_MODE_MASTER_V01; ctrl->qmi.handle = handle; rc = qcom_slim_qmi_send_select_inst_req(ctrl, &req); if (rc) { dev_err(ctrl->dev, "failed to select h/w instance\n"); goto qmi_select_instance_failed; } return 0; qmi_select_instance_failed: ctrl->qmi.handle = NULL; qmi_connect_to_service_failed: qmi_handle_release(handle); qmi_handle_init_failed: devm_kfree(ctrl->dev, handle); return rc; } static void qcom_slim_qmi_exit(struct qcom_slim_ngd_ctrl *ctrl) { if (!ctrl->qmi.handle) return; qmi_handle_release(ctrl->qmi.handle); devm_kfree(ctrl->dev, ctrl->qmi.handle); ctrl->qmi.handle = NULL; } static int qcom_slim_qmi_power_request(struct qcom_slim_ngd_ctrl *ctrl, bool active) { struct slimbus_power_req_msg_v01 req; if (active) req.pm_req = SLIMBUS_PM_ACTIVE_V01; else req.pm_req = SLIMBUS_PM_INACTIVE_V01; req.resp_type_valid = 0; return qcom_slim_qmi_send_power_request(ctrl, &req); } static u32 *qcom_slim_ngd_tx_msg_get(struct qcom_slim_ngd_ctrl *ctrl, int len, struct completion *comp) { struct qcom_slim_ngd_dma_desc *desc; unsigned long flags; spin_lock_irqsave(&ctrl->tx_buf_lock, flags); if ((ctrl->tx_tail + 1) % QCOM_SLIM_NGD_DESC_NUM == ctrl->tx_head) { spin_unlock_irqrestore(&ctrl->tx_buf_lock, flags); return NULL; } desc = &ctrl->txdesc[ctrl->tx_tail]; desc->base = ctrl->tx_base + ctrl->tx_tail * SLIM_MSGQ_BUF_LEN; desc->comp = comp; ctrl->tx_tail = (ctrl->tx_tail + 1) % QCOM_SLIM_NGD_DESC_NUM; spin_unlock_irqrestore(&ctrl->tx_buf_lock, flags); return desc->base; } static void qcom_slim_ngd_tx_msg_dma_cb(void *args) { struct qcom_slim_ngd_dma_desc *desc = args; struct qcom_slim_ngd_ctrl *ctrl = desc->ctrl; unsigned long flags; spin_lock_irqsave(&ctrl->tx_buf_lock, flags); if (desc->comp) { complete(desc->comp); desc->comp = NULL; } ctrl->tx_head = (ctrl->tx_head + 1) % QCOM_SLIM_NGD_DESC_NUM; spin_unlock_irqrestore(&ctrl->tx_buf_lock, flags); } static int qcom_slim_ngd_tx_msg_post(struct qcom_slim_ngd_ctrl *ctrl, void *buf, int len) { struct qcom_slim_ngd_dma_desc *desc; unsigned long flags; int index, offset; spin_lock_irqsave(&ctrl->tx_buf_lock, flags); offset = buf - ctrl->tx_base; index = offset/SLIM_MSGQ_BUF_LEN; desc = &ctrl->txdesc[index]; desc->phys = ctrl->tx_phys_base + offset; desc->base = ctrl->tx_base + offset; desc->ctrl = ctrl; len = (len + 3) & 0xfc; desc->desc = dmaengine_prep_slave_single(ctrl->dma_tx_channel, desc->phys, len, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT); if (!desc->desc) { dev_err(ctrl->dev, "unable to prepare channel\n"); spin_unlock_irqrestore(&ctrl->tx_buf_lock, flags); return -EINVAL; } desc->desc->callback = qcom_slim_ngd_tx_msg_dma_cb; desc->desc->callback_param = desc; desc->desc->cookie = dmaengine_submit(desc->desc); dma_async_issue_pending(ctrl->dma_tx_channel); spin_unlock_irqrestore(&ctrl->tx_buf_lock, flags); return 0; } static void qcom_slim_ngd_rx(struct qcom_slim_ngd_ctrl *ctrl, u8 *buf) { u8 mc, mt, len; mt = SLIM_HEADER_GET_MT(buf[0]); len = SLIM_HEADER_GET_RL(buf[0]); mc = SLIM_HEADER_GET_MC(buf[1]); if (mc == SLIM_USR_MC_MASTER_CAPABILITY && mt == SLIM_MSG_MT_SRC_REFERRED_USER) queue_work(ctrl->mwq, &ctrl->m_work); if (mc == SLIM_MSG_MC_REPLY_INFORMATION || mc == SLIM_MSG_MC_REPLY_VALUE || (mc == SLIM_USR_MC_ADDR_REPLY && mt == SLIM_MSG_MT_SRC_REFERRED_USER) || (mc == SLIM_USR_MC_GENERIC_ACK && mt == SLIM_MSG_MT_SRC_REFERRED_USER)) { slim_msg_response(&ctrl->ctrl, &buf[4], buf[3], len - 4); pm_runtime_mark_last_busy(ctrl->ctrl.dev); } } static void qcom_slim_ngd_rx_msgq_cb(void *args) { struct qcom_slim_ngd_dma_desc *desc = args; struct qcom_slim_ngd_ctrl *ctrl = desc->ctrl; qcom_slim_ngd_rx(ctrl, (u8 *)desc->base); /* Add descriptor back to the queue */ desc->desc = dmaengine_prep_slave_single(ctrl->dma_rx_channel, desc->phys, SLIM_MSGQ_BUF_LEN, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT); if (!desc->desc) { dev_err(ctrl->dev, "Unable to prepare rx channel\n"); return; } desc->desc->callback = qcom_slim_ngd_rx_msgq_cb; desc->desc->callback_param = desc; desc->desc->cookie = dmaengine_submit(desc->desc); dma_async_issue_pending(ctrl->dma_rx_channel); } static int qcom_slim_ngd_post_rx_msgq(struct qcom_slim_ngd_ctrl *ctrl) { struct qcom_slim_ngd_dma_desc *desc; int i; for (i = 0; i < QCOM_SLIM_NGD_DESC_NUM; i++) { desc = &ctrl->rx_desc[i]; desc->phys = ctrl->rx_phys_base + i * SLIM_MSGQ_BUF_LEN; desc->ctrl = ctrl; desc->base = ctrl->rx_base + i * SLIM_MSGQ_BUF_LEN; desc->desc = dmaengine_prep_slave_single(ctrl->dma_rx_channel, desc->phys, SLIM_MSGQ_BUF_LEN, DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT); if (!desc->desc) { dev_err(ctrl->dev, "Unable to prepare rx channel\n"); return -EINVAL; } desc->desc->callback = qcom_slim_ngd_rx_msgq_cb; desc->desc->callback_param = desc; desc->desc->cookie = dmaengine_submit(desc->desc); } dma_async_issue_pending(ctrl->dma_rx_channel); return 0; } static int qcom_slim_ngd_init_rx_msgq(struct qcom_slim_ngd_ctrl *ctrl) { struct device *dev = ctrl->dev; int ret, size; ctrl->dma_rx_channel = dma_request_chan(dev, "rx"); if (IS_ERR(ctrl->dma_rx_channel)) { dev_err(dev, "Failed to request RX dma channel"); ret = PTR_ERR(ctrl->dma_rx_channel); ctrl->dma_rx_channel = NULL; return ret; } size = QCOM_SLIM_NGD_DESC_NUM * SLIM_MSGQ_BUF_LEN; ctrl->rx_base = dma_alloc_coherent(dev, size, &ctrl->rx_phys_base, GFP_KERNEL); if (!ctrl->rx_base) { ret = -ENOMEM; goto rel_rx; } ret = qcom_slim_ngd_post_rx_msgq(ctrl); if (ret) { dev_err(dev, "post_rx_msgq() failed 0x%x\n", ret); goto rx_post_err; } return 0; rx_post_err: dma_free_coherent(dev, size, ctrl->rx_base, ctrl->rx_phys_base); rel_rx: dma_release_channel(ctrl->dma_rx_channel); return ret; } static int qcom_slim_ngd_init_tx_msgq(struct qcom_slim_ngd_ctrl *ctrl) { struct device *dev = ctrl->dev; unsigned long flags; int ret = 0; int size; ctrl->dma_tx_channel = dma_request_chan(dev, "tx"); if (IS_ERR(ctrl->dma_tx_channel)) { dev_err(dev, "Failed to request TX dma channel"); ret = PTR_ERR(ctrl->dma_tx_channel); ctrl->dma_tx_channel = NULL; return ret; } size = ((QCOM_SLIM_NGD_DESC_NUM + 1) * SLIM_MSGQ_BUF_LEN); ctrl->tx_base = dma_alloc_coherent(dev, size, &ctrl->tx_phys_base, GFP_KERNEL); if (!ctrl->tx_base) { ret = -EINVAL; goto rel_tx; } spin_lock_irqsave(&ctrl->tx_buf_lock, flags); ctrl->tx_tail = 0; ctrl->tx_head = 0; spin_unlock_irqrestore(&ctrl->tx_buf_lock, flags); return 0; rel_tx: dma_release_channel(ctrl->dma_tx_channel); return ret; } static int qcom_slim_ngd_init_dma(struct qcom_slim_ngd_ctrl *ctrl) { int ret = 0; ret = qcom_slim_ngd_init_rx_msgq(ctrl); if (ret) { dev_err(ctrl->dev, "rx dma init failed\n"); return ret; } ret = qcom_slim_ngd_init_tx_msgq(ctrl); if (ret) dev_err(ctrl->dev, "tx dma init failed\n"); return ret; } static irqreturn_t qcom_slim_ngd_interrupt(int irq, void *d) { struct qcom_slim_ngd_ctrl *ctrl = d; void __iomem *base = ctrl->ngd->base; u32 stat; if (pm_runtime_suspended(ctrl->ctrl.dev)) { dev_warn_once(ctrl->dev, "Interrupt received while suspended\n"); return IRQ_NONE; } stat = readl(base + NGD_INT_STAT); if ((stat & NGD_INT_MSG_BUF_CONTE) || (stat & NGD_INT_MSG_TX_INVAL) || (stat & NGD_INT_DEV_ERR) || (stat & NGD_INT_TX_NACKED_2)) { dev_err(ctrl->dev, "Error Interrupt received 0x%x\n", stat); } writel(stat, base + NGD_INT_CLR); return IRQ_HANDLED; } static int qcom_slim_ngd_xfer_msg(struct slim_controller *sctrl, struct slim_msg_txn *txn) { struct qcom_slim_ngd_ctrl *ctrl = dev_get_drvdata(sctrl->dev); DECLARE_COMPLETION_ONSTACK(tx_sent); DECLARE_COMPLETION_ONSTACK(done); int ret, timeout, i; u8 wbuf[SLIM_MSGQ_BUF_LEN]; u8 rbuf[SLIM_MSGQ_BUF_LEN]; u32 *pbuf; u8 *puc; u8 la = txn->la; bool usr_msg = false; if (txn->mt == SLIM_MSG_MT_CORE && (txn->mc >= SLIM_MSG_MC_BEGIN_RECONFIGURATION && txn->mc <= SLIM_MSG_MC_RECONFIGURE_NOW)) return 0; if (txn->dt == SLIM_MSG_DEST_ENUMADDR) return -EPROTONOSUPPORT; if (txn->msg->num_bytes > SLIM_MSGQ_BUF_LEN || txn->rl > SLIM_MSGQ_BUF_LEN) { dev_err(ctrl->dev, "msg exceeds HW limit\n"); return -EINVAL; } pbuf = qcom_slim_ngd_tx_msg_get(ctrl, txn->rl, &tx_sent); if (!pbuf) { dev_err(ctrl->dev, "Message buffer unavailable\n"); return -ENOMEM; } if (txn->mt == SLIM_MSG_MT_CORE && (txn->mc == SLIM_MSG_MC_CONNECT_SOURCE || txn->mc == SLIM_MSG_MC_CONNECT_SINK || txn->mc == SLIM_MSG_MC_DISCONNECT_PORT)) { txn->mt = SLIM_MSG_MT_DEST_REFERRED_USER; switch (txn->mc) { case SLIM_MSG_MC_CONNECT_SOURCE: txn->mc = SLIM_USR_MC_CONNECT_SRC; break; case SLIM_MSG_MC_CONNECT_SINK: txn->mc = SLIM_USR_MC_CONNECT_SINK; break; case SLIM_MSG_MC_DISCONNECT_PORT: txn->mc = SLIM_USR_MC_DISCONNECT_PORT; break; default: return -EINVAL; } usr_msg = true; i = 0; wbuf[i++] = txn->la; la = SLIM_LA_MGR; wbuf[i++] = txn->msg->wbuf[0]; if (txn->mc != SLIM_USR_MC_DISCONNECT_PORT) wbuf[i++] = txn->msg->wbuf[1]; txn->comp = &done; ret = slim_alloc_txn_tid(sctrl, txn); if (ret) { dev_err(ctrl->dev, "Unable to allocate TID\n"); return ret; } wbuf[i++] = txn->tid; txn->msg->num_bytes = i; txn->msg->wbuf = wbuf; txn->msg->rbuf = rbuf; txn->rl = txn->msg->num_bytes + 4; } /* HW expects length field to be excluded */ txn->rl--; puc = (u8 *)pbuf; *pbuf = 0; if (txn->dt == SLIM_MSG_DEST_LOGICALADDR) { *pbuf = SLIM_MSG_ASM_FIRST_WORD(txn->rl, txn->mt, txn->mc, 0, la); puc += 3; } else { *pbuf = SLIM_MSG_ASM_FIRST_WORD(txn->rl, txn->mt, txn->mc, 1, la); puc += 2; } if (slim_tid_txn(txn->mt, txn->mc)) *(puc++) = txn->tid; if (slim_ec_txn(txn->mt, txn->mc)) { *(puc++) = (txn->ec & 0xFF); *(puc++) = (txn->ec >> 8) & 0xFF; } if (txn->msg && txn->msg->wbuf) memcpy(puc, txn->msg->wbuf, txn->msg->num_bytes); mutex_lock(&ctrl->tx_lock); ret = qcom_slim_ngd_tx_msg_post(ctrl, pbuf, txn->rl); if (ret) { mutex_unlock(&ctrl->tx_lock); return ret; } timeout = wait_for_completion_timeout(&tx_sent, HZ); if (!timeout) { dev_err(sctrl->dev, "TX timed out:MC:0x%x,mt:0x%x", txn->mc, txn->mt); mutex_unlock(&ctrl->tx_lock); return -ETIMEDOUT; } if (usr_msg) { timeout = wait_for_completion_timeout(&done, HZ); if (!timeout) { dev_err(sctrl->dev, "TX timed out:MC:0x%x,mt:0x%x", txn->mc, txn->mt); mutex_unlock(&ctrl->tx_lock); return -ETIMEDOUT; } } mutex_unlock(&ctrl->tx_lock); return 0; } static int qcom_slim_ngd_xfer_msg_sync(struct slim_controller *ctrl, struct slim_msg_txn *txn) { DECLARE_COMPLETION_ONSTACK(done); int ret, timeout; ret = pm_runtime_get_sync(ctrl->dev); if (ret < 0) goto pm_put; txn->comp = &done; ret = qcom_slim_ngd_xfer_msg(ctrl, txn); if (ret) goto pm_put; timeout = wait_for_completion_timeout(&done, HZ); if (!timeout) { dev_err(ctrl->dev, "TX timed out:MC:0x%x,mt:0x%x", txn->mc, txn->mt); ret = -ETIMEDOUT; goto pm_put; } return 0; pm_put: pm_runtime_put(ctrl->dev); return ret; } static int qcom_slim_calc_coef(struct slim_stream_runtime *rt, int *exp) { struct slim_controller *ctrl = rt->dev->ctrl; int coef; if (rt->ratem * ctrl->a_framer->superfreq < rt->rate) rt->ratem++; coef = rt->ratem; *exp = 0; /* * CRM = Cx(2^E) is the formula we are using. * Here C is the coffecient and E is the exponent. * CRM is the Channel Rate Multiplier. * Coefficeint should be either 1 or 3 and exponenet * should be an integer between 0 to 9, inclusive. */ while (1) { while ((coef & 0x1) != 0x1) { coef >>= 1; *exp = *exp + 1; } if (coef <= 3) break; coef++; } /* * we rely on the coef value (1 or 3) to set a bit * in the slimbus message packet. This bit is * BIT(5) which is the segment rate coefficient. */ if (coef == 1) { if (*exp > 9) return -EIO; coef = 0; } else { if (*exp > 8) return -EIO; coef = 1; } return coef; } static int qcom_slim_ngd_enable_stream(struct slim_stream_runtime *rt) { struct slim_device *sdev = rt->dev; struct slim_controller *ctrl = sdev->ctrl; struct slim_val_inf msg = {0}; u8 wbuf[SLIM_MSGQ_BUF_LEN]; u8 rbuf[SLIM_MSGQ_BUF_LEN]; struct slim_msg_txn txn = {0,}; int i, ret; txn.mt = SLIM_MSG_MT_DEST_REFERRED_USER; txn.dt = SLIM_MSG_DEST_LOGICALADDR; txn.la = SLIM_LA_MGR; txn.ec = 0; txn.msg = &msg; txn.msg->num_bytes = 0; txn.msg->wbuf = wbuf; txn.msg->rbuf = rbuf; for (i = 0; i < rt->num_ports; i++) { struct slim_port *port = &rt->ports[i]; if (txn.msg->num_bytes == 0) { int exp = 0, coef = 0; wbuf[txn.msg->num_bytes++] = sdev->laddr; wbuf[txn.msg->num_bytes] = rt->bps >> 2 | (port->ch.aux_fmt << 6); /* calculate coef dynamically */ coef = qcom_slim_calc_coef(rt, &exp); if (coef < 0) { dev_err(&sdev->dev, "%s: error calculating coef %d\n", __func__, coef); return -EIO; } if (coef) wbuf[txn.msg->num_bytes] |= BIT(5); txn.msg->num_bytes++; wbuf[txn.msg->num_bytes++] = exp << 4 | rt->prot; if (rt->prot == SLIM_PROTO_ISO) wbuf[txn.msg->num_bytes++] = port->ch.prrate | SLIM_CHANNEL_CONTENT_FL; else wbuf[txn.msg->num_bytes++] = port->ch.prrate; ret = slim_alloc_txn_tid(ctrl, &txn); if (ret) { dev_err(&sdev->dev, "Fail to allocate TID\n"); return -ENXIO; } wbuf[txn.msg->num_bytes++] = txn.tid; } wbuf[txn.msg->num_bytes++] = port->ch.id; } txn.mc = SLIM_USR_MC_DEF_ACT_CHAN; txn.rl = txn.msg->num_bytes + 4; ret = qcom_slim_ngd_xfer_msg_sync(ctrl, &txn); if (ret) { slim_free_txn_tid(ctrl, &txn); dev_err(&sdev->dev, "TX timed out:MC:0x%x,mt:0x%x", txn.mc, txn.mt); return ret; } txn.mc = SLIM_USR_MC_RECONFIG_NOW; txn.msg->num_bytes = 2; wbuf[1] = sdev->laddr; txn.rl = txn.msg->num_bytes + 4; ret = slim_alloc_txn_tid(ctrl, &txn); if (ret) { dev_err(ctrl->dev, "Fail to allocate TID\n"); return ret; } wbuf[0] = txn.tid; ret = qcom_slim_ngd_xfer_msg_sync(ctrl, &txn); if (ret) { slim_free_txn_tid(ctrl, &txn); dev_err(&sdev->dev, "TX timed out:MC:0x%x,mt:0x%x", txn.mc, txn.mt); } return ret; } static int qcom_slim_ngd_get_laddr(struct slim_controller *ctrl, struct slim_eaddr *ea, u8 *laddr) { struct slim_val_inf msg = {0}; u8 failed_ea[6] = {0, 0, 0, 0, 0, 0}; struct slim_msg_txn txn; u8 wbuf[10] = {0}; u8 rbuf[10] = {0}; int ret; txn.mt = SLIM_MSG_MT_DEST_REFERRED_USER; txn.dt = SLIM_MSG_DEST_LOGICALADDR; txn.la = SLIM_LA_MGR; txn.ec = 0; txn.mc = SLIM_USR_MC_ADDR_QUERY; txn.rl = 11; txn.msg = &msg; txn.msg->num_bytes = 7; txn.msg->wbuf = wbuf; txn.msg->rbuf = rbuf; ret = slim_alloc_txn_tid(ctrl, &txn); if (ret < 0) return ret; wbuf[0] = (u8)txn.tid; memcpy(&wbuf[1], ea, sizeof(*ea)); ret = qcom_slim_ngd_xfer_msg_sync(ctrl, &txn); if (ret) { slim_free_txn_tid(ctrl, &txn); return ret; } if (!memcmp(rbuf, failed_ea, 6)) return -ENXIO; *laddr = rbuf[6]; return ret; } static int qcom_slim_ngd_exit_dma(struct qcom_slim_ngd_ctrl *ctrl) { if (ctrl->dma_rx_channel) { dmaengine_terminate_sync(ctrl->dma_rx_channel); dma_release_channel(ctrl->dma_rx_channel); } if (ctrl->dma_tx_channel) { dmaengine_terminate_sync(ctrl->dma_tx_channel); dma_release_channel(ctrl->dma_tx_channel); } ctrl->dma_tx_channel = ctrl->dma_rx_channel = NULL; return 0; } static void qcom_slim_ngd_setup(struct qcom_slim_ngd_ctrl *ctrl) { u32 cfg = readl_relaxed(ctrl->ngd->base); if (ctrl->state == QCOM_SLIM_NGD_CTRL_DOWN || ctrl->state == QCOM_SLIM_NGD_CTRL_ASLEEP) qcom_slim_ngd_init_dma(ctrl); /* By default enable message queues */ cfg |= NGD_CFG_RX_MSGQ_EN; cfg |= NGD_CFG_TX_MSGQ_EN; /* Enable NGD if it's not already enabled*/ if (!(cfg & NGD_CFG_ENABLE)) cfg |= NGD_CFG_ENABLE; writel_relaxed(cfg, ctrl->ngd->base); } static int qcom_slim_ngd_power_up(struct qcom_slim_ngd_ctrl *ctrl) { enum qcom_slim_ngd_state cur_state = ctrl->state; struct qcom_slim_ngd *ngd = ctrl->ngd; u32 laddr, rx_msgq; int timeout, ret = 0; if (ctrl->state == QCOM_SLIM_NGD_CTRL_DOWN) { timeout = wait_for_completion_timeout(&ctrl->qmi.qmi_comp, HZ); if (!timeout) return -EREMOTEIO; } if (ctrl->state == QCOM_SLIM_NGD_CTRL_ASLEEP || ctrl->state == QCOM_SLIM_NGD_CTRL_DOWN) { ret = qcom_slim_qmi_power_request(ctrl, true); if (ret) { dev_err(ctrl->dev, "SLIM QMI power request failed:%d\n", ret); return ret; } } ctrl->ver = readl_relaxed(ctrl->base); /* Version info in 16 MSbits */ ctrl->ver >>= 16; laddr = readl_relaxed(ngd->base + NGD_STATUS); if (laddr & NGD_LADDR) { /* * external MDM restart case where ADSP itself was active framer * For example, modem restarted when playback was active */ if (cur_state == QCOM_SLIM_NGD_CTRL_AWAKE) { dev_info(ctrl->dev, "Subsys restart: ADSP active framer\n"); return 0; } qcom_slim_ngd_setup(ctrl); return 0; } /* * Reinitialize only when registers are not retained or when enumeration * is lost for ngd. */ reinit_completion(&ctrl->reconf); writel_relaxed(DEF_NGD_INT_MASK, ngd->base + NGD_INT_EN); rx_msgq = readl_relaxed(ngd->base + NGD_RX_MSGQ_CFG); writel_relaxed(rx_msgq|SLIM_RX_MSGQ_TIMEOUT_VAL, ngd->base + NGD_RX_MSGQ_CFG); qcom_slim_ngd_setup(ctrl); timeout = wait_for_completion_timeout(&ctrl->reconf, HZ); if (!timeout) { dev_err(ctrl->dev, "capability exchange timed-out\n"); return -ETIMEDOUT; } return 0; } static void qcom_slim_ngd_notify_slaves(struct qcom_slim_ngd_ctrl *ctrl) { struct slim_device *sbdev; struct device_node *node; for_each_child_of_node(ctrl->ngd->pdev->dev.of_node, node) { sbdev = of_slim_get_device(&ctrl->ctrl, node); if (!sbdev) continue; if (slim_get_logical_addr(sbdev)) dev_err(ctrl->dev, "Failed to get logical address\n"); } } static void qcom_slim_ngd_master_worker(struct work_struct *work) { struct qcom_slim_ngd_ctrl *ctrl; struct slim_msg_txn txn; struct slim_val_inf msg = {0}; int retries = 0; u8 wbuf[8]; int ret = 0; ctrl = container_of(work, struct qcom_slim_ngd_ctrl, m_work); txn.dt = SLIM_MSG_DEST_LOGICALADDR; txn.ec = 0; txn.mc = SLIM_USR_MC_REPORT_SATELLITE; txn.mt = SLIM_MSG_MT_SRC_REFERRED_USER; txn.la = SLIM_LA_MGR; wbuf[0] = SAT_MAGIC_LSB; wbuf[1] = SAT_MAGIC_MSB; wbuf[2] = SAT_MSG_VER; wbuf[3] = SAT_MSG_PROT; txn.msg = &msg; txn.msg->wbuf = wbuf; txn.msg->num_bytes = 4; txn.rl = 8; dev_info(ctrl->dev, "SLIM SAT: Rcvd master capability\n"); capability_retry: ret = qcom_slim_ngd_xfer_msg(&ctrl->ctrl, &txn); if (!ret) { if (ctrl->state >= QCOM_SLIM_NGD_CTRL_ASLEEP) complete(&ctrl->reconf); else dev_err(ctrl->dev, "unexpected state:%d\n", ctrl->state); if (ctrl->state == QCOM_SLIM_NGD_CTRL_DOWN) qcom_slim_ngd_notify_slaves(ctrl); } else if (ret == -EIO) { dev_err(ctrl->dev, "capability message NACKed, retrying\n"); if (retries < INIT_MX_RETRIES) { msleep(DEF_RETRY_MS); retries++; goto capability_retry; } } else { dev_err(ctrl->dev, "SLIM: capability TX failed:%d\n", ret); } } static int qcom_slim_ngd_update_device_status(struct device *dev, void *null) { slim_report_absent(to_slim_device(dev)); return 0; } static int qcom_slim_ngd_runtime_resume(struct device *dev) { struct qcom_slim_ngd_ctrl *ctrl = dev_get_drvdata(dev); int ret = 0; if (!ctrl->qmi.handle) return 0; if (ctrl->state >= QCOM_SLIM_NGD_CTRL_ASLEEP) ret = qcom_slim_ngd_power_up(ctrl); if (ret) { /* Did SSR cause this power up failure */ if (ctrl->state != QCOM_SLIM_NGD_CTRL_DOWN) ctrl->state = QCOM_SLIM_NGD_CTRL_ASLEEP; else dev_err(ctrl->dev, "HW wakeup attempt during SSR\n"); } else { ctrl->state = QCOM_SLIM_NGD_CTRL_AWAKE; } return 0; } static int qcom_slim_ngd_enable(struct qcom_slim_ngd_ctrl *ctrl, bool enable) { if (enable) { int ret = qcom_slim_qmi_init(ctrl, false); if (ret) { dev_err(ctrl->dev, "qmi init fail, ret:%d, state:%d\n", ret, ctrl->state); return ret; } /* controller state should be in sync with framework state */ complete(&ctrl->qmi.qmi_comp); if (!pm_runtime_enabled(ctrl->ctrl.dev) || !pm_runtime_suspended(ctrl->ctrl.dev)) qcom_slim_ngd_runtime_resume(ctrl->ctrl.dev); else pm_runtime_resume(ctrl->ctrl.dev); pm_runtime_mark_last_busy(ctrl->ctrl.dev); pm_runtime_put(ctrl->ctrl.dev); ret = slim_register_controller(&ctrl->ctrl); if (ret) { dev_err(ctrl->dev, "error adding slim controller\n"); return ret; } dev_info(ctrl->dev, "SLIM controller Registered\n"); } else { qcom_slim_qmi_exit(ctrl); slim_unregister_controller(&ctrl->ctrl); } return 0; } static int qcom_slim_ngd_qmi_new_server(struct qmi_handle *hdl, struct qmi_service *service) { struct qcom_slim_ngd_qmi *qmi = container_of(hdl, struct qcom_slim_ngd_qmi, svc_event_hdl); struct qcom_slim_ngd_ctrl *ctrl = container_of(qmi, struct qcom_slim_ngd_ctrl, qmi); qmi->svc_info.sq_family = AF_QIPCRTR; qmi->svc_info.sq_node = service->node; qmi->svc_info.sq_port = service->port; complete(&ctrl->qmi_up); return 0; } static void qcom_slim_ngd_qmi_del_server(struct qmi_handle *hdl, struct qmi_service *service) { struct qcom_slim_ngd_qmi *qmi = container_of(hdl, struct qcom_slim_ngd_qmi, svc_event_hdl); struct qcom_slim_ngd_ctrl *ctrl = container_of(qmi, struct qcom_slim_ngd_ctrl, qmi); reinit_completion(&ctrl->qmi_up); qmi->svc_info.sq_node = 0; qmi->svc_info.sq_port = 0; } static const struct qmi_ops qcom_slim_ngd_qmi_svc_event_ops = { .new_server = qcom_slim_ngd_qmi_new_server, .del_server = qcom_slim_ngd_qmi_del_server, }; static int qcom_slim_ngd_qmi_svc_event_init(struct qcom_slim_ngd_ctrl *ctrl) { struct qcom_slim_ngd_qmi *qmi = &ctrl->qmi; int ret; ret = qmi_handle_init(&qmi->svc_event_hdl, 0, &qcom_slim_ngd_qmi_svc_event_ops, NULL); if (ret < 0) { dev_err(ctrl->dev, "qmi_handle_init failed: %d\n", ret); return ret; } ret = qmi_add_lookup(&qmi->svc_event_hdl, SLIMBUS_QMI_SVC_ID, SLIMBUS_QMI_SVC_V1, SLIMBUS_QMI_INS_ID); if (ret < 0) { dev_err(ctrl->dev, "qmi_add_lookup failed: %d\n", ret); qmi_handle_release(&qmi->svc_event_hdl); } return ret; } static void qcom_slim_ngd_qmi_svc_event_deinit(struct qcom_slim_ngd_qmi *qmi) { qmi_handle_release(&qmi->svc_event_hdl); } static struct platform_driver qcom_slim_ngd_driver; #define QCOM_SLIM_NGD_DRV_NAME "qcom,slim-ngd" static const struct of_device_id qcom_slim_ngd_dt_match[] = { { .compatible = "qcom,slim-ngd-v1.5.0", .data = &ngd_v1_5_offset_info, },{ .compatible = "qcom,slim-ngd-v2.1.0", .data = &ngd_v1_5_offset_info, }, {} }; MODULE_DEVICE_TABLE(of, qcom_slim_ngd_dt_match); static void qcom_slim_ngd_down(struct qcom_slim_ngd_ctrl *ctrl) { mutex_lock(&ctrl->ssr_lock); device_for_each_child(ctrl->ctrl.dev, NULL, qcom_slim_ngd_update_device_status); qcom_slim_ngd_enable(ctrl, false); mutex_unlock(&ctrl->ssr_lock); } static void qcom_slim_ngd_up_worker(struct work_struct *work) { struct qcom_slim_ngd_ctrl *ctrl; ctrl = container_of(work, struct qcom_slim_ngd_ctrl, ngd_up_work); /* Make sure qmi service is up before continuing */ if (!wait_for_completion_interruptible_timeout(&ctrl->qmi_up, msecs_to_jiffies(MSEC_PER_SEC))) { dev_err(ctrl->dev, "QMI wait timeout\n"); return; } mutex_lock(&ctrl->ssr_lock); qcom_slim_ngd_enable(ctrl, true); mutex_unlock(&ctrl->ssr_lock); } static int qcom_slim_ngd_ssr_pdr_notify(struct qcom_slim_ngd_ctrl *ctrl, unsigned long action) { switch (action) { case QCOM_SSR_BEFORE_SHUTDOWN: case SERVREG_SERVICE_STATE_DOWN: /* Make sure the last dma xfer is finished */ mutex_lock(&ctrl->tx_lock); if (ctrl->state != QCOM_SLIM_NGD_CTRL_DOWN) { pm_runtime_get_noresume(ctrl->ctrl.dev); ctrl->state = QCOM_SLIM_NGD_CTRL_DOWN; qcom_slim_ngd_down(ctrl); qcom_slim_ngd_exit_dma(ctrl); } mutex_unlock(&ctrl->tx_lock); break; case QCOM_SSR_AFTER_POWERUP: case SERVREG_SERVICE_STATE_UP: schedule_work(&ctrl->ngd_up_work); break; default: break; } return NOTIFY_OK; } static int qcom_slim_ngd_ssr_notify(struct notifier_block *nb, unsigned long action, void *data) { struct qcom_slim_ngd_ctrl *ctrl = container_of(nb, struct qcom_slim_ngd_ctrl, nb); return qcom_slim_ngd_ssr_pdr_notify(ctrl, action); } static void slim_pd_status(int state, char *svc_path, void *priv) { struct qcom_slim_ngd_ctrl *ctrl = (struct qcom_slim_ngd_ctrl *)priv; qcom_slim_ngd_ssr_pdr_notify(ctrl, state); } static int of_qcom_slim_ngd_register(struct device *parent, struct qcom_slim_ngd_ctrl *ctrl) { const struct ngd_reg_offset_data *data; struct qcom_slim_ngd *ngd; const struct of_device_id *match; struct device_node *node; u32 id; int ret; match = of_match_node(qcom_slim_ngd_dt_match, parent->of_node); data = match->data; for_each_available_child_of_node(parent->of_node, node) { if (of_property_read_u32(node, "reg", &id)) continue; ngd = kzalloc(sizeof(*ngd), GFP_KERNEL); if (!ngd) { of_node_put(node); return -ENOMEM; } ngd->pdev = platform_device_alloc(QCOM_SLIM_NGD_DRV_NAME, id); if (!ngd->pdev) { kfree(ngd); of_node_put(node); return -ENOMEM; } ngd->id = id; ngd->pdev->dev.parent = parent; ret = driver_set_override(&ngd->pdev->dev, &ngd->pdev->driver_override, QCOM_SLIM_NGD_DRV_NAME, strlen(QCOM_SLIM_NGD_DRV_NAME)); if (ret) { platform_device_put(ngd->pdev); kfree(ngd); of_node_put(node); return ret; } ngd->pdev->dev.of_node = node; ctrl->ngd = ngd; ret = platform_device_add(ngd->pdev); if (ret) { platform_device_put(ngd->pdev); kfree(ngd); of_node_put(node); return ret; } ngd->base = ctrl->base + ngd->id * data->offset + (ngd->id - 1) * data->size; return 0; } return -ENODEV; } static int qcom_slim_ngd_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct qcom_slim_ngd_ctrl *ctrl = dev_get_drvdata(dev->parent); int ret; ctrl->ctrl.dev = dev; platform_set_drvdata(pdev, ctrl); pm_runtime_use_autosuspend(dev); pm_runtime_set_autosuspend_delay(dev, 100); pm_runtime_set_suspended(dev); pm_runtime_enable(dev); pm_runtime_get_noresume(dev); ret = qcom_slim_ngd_qmi_svc_event_init(ctrl); if (ret) { dev_err(&pdev->dev, "QMI service registration failed:%d", ret); return ret; } INIT_WORK(&ctrl->m_work, qcom_slim_ngd_master_worker); INIT_WORK(&ctrl->ngd_up_work, qcom_slim_ngd_up_worker); ctrl->mwq = create_singlethread_workqueue("ngd_master"); if (!ctrl->mwq) { dev_err(&pdev->dev, "Failed to start master worker\n"); ret = -ENOMEM; goto wq_err; } return 0; wq_err: qcom_slim_ngd_qmi_svc_event_deinit(&ctrl->qmi); if (ctrl->mwq) destroy_workqueue(ctrl->mwq); return ret; } static int qcom_slim_ngd_ctrl_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct qcom_slim_ngd_ctrl *ctrl; int ret; struct pdr_service *pds; ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL); if (!ctrl) return -ENOMEM; dev_set_drvdata(dev, ctrl); ctrl->base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL); if (IS_ERR(ctrl->base)) return PTR_ERR(ctrl->base); ret = platform_get_irq(pdev, 0); if (ret < 0) return ret; ret = devm_request_irq(dev, ret, qcom_slim_ngd_interrupt, IRQF_TRIGGER_HIGH, "slim-ngd", ctrl); if (ret) return dev_err_probe(&pdev->dev, ret, "request IRQ failed\n"); ctrl->nb.notifier_call = qcom_slim_ngd_ssr_notify; ctrl->notifier = qcom_register_ssr_notifier("lpass", &ctrl->nb); if (IS_ERR(ctrl->notifier)) return PTR_ERR(ctrl->notifier); ctrl->dev = dev; ctrl->framer.rootfreq = SLIM_ROOT_FREQ >> 3; ctrl->framer.superfreq = ctrl->framer.rootfreq / SLIM_CL_PER_SUPERFRAME_DIV8; ctrl->ctrl.a_framer = &ctrl->framer; ctrl->ctrl.clkgear = SLIM_MAX_CLK_GEAR; ctrl->ctrl.get_laddr = qcom_slim_ngd_get_laddr; ctrl->ctrl.enable_stream = qcom_slim_ngd_enable_stream; ctrl->ctrl.xfer_msg = qcom_slim_ngd_xfer_msg; ctrl->ctrl.wakeup = NULL; ctrl->state = QCOM_SLIM_NGD_CTRL_DOWN; mutex_init(&ctrl->tx_lock); mutex_init(&ctrl->ssr_lock); spin_lock_init(&ctrl->tx_buf_lock); init_completion(&ctrl->reconf); init_completion(&ctrl->qmi.qmi_comp); init_completion(&ctrl->qmi_up); ctrl->pdr = pdr_handle_alloc(slim_pd_status, ctrl); if (IS_ERR(ctrl->pdr)) { ret = dev_err_probe(dev, PTR_ERR(ctrl->pdr), "Failed to init PDR handle\n"); goto err_pdr_alloc; } pds = pdr_add_lookup(ctrl->pdr, "avs/audio", "msm/adsp/audio_pd"); if (IS_ERR(pds) && PTR_ERR(pds) != -EALREADY) { ret = dev_err_probe(dev, PTR_ERR(pds), "pdr add lookup failed\n"); goto err_pdr_lookup; } platform_driver_register(&qcom_slim_ngd_driver); return of_qcom_slim_ngd_register(dev, ctrl); err_pdr_alloc: qcom_unregister_ssr_notifier(ctrl->notifier, &ctrl->nb); err_pdr_lookup: pdr_handle_release(ctrl->pdr); return ret; } static void qcom_slim_ngd_ctrl_remove(struct platform_device *pdev) { platform_driver_unregister(&qcom_slim_ngd_driver); } static void qcom_slim_ngd_remove(struct platform_device *pdev) { struct qcom_slim_ngd_ctrl *ctrl = platform_get_drvdata(pdev); pm_runtime_disable(&pdev->dev); pdr_handle_release(ctrl->pdr); qcom_unregister_ssr_notifier(ctrl->notifier, &ctrl->nb); qcom_slim_ngd_enable(ctrl, false); qcom_slim_ngd_exit_dma(ctrl); qcom_slim_ngd_qmi_svc_event_deinit(&ctrl->qmi); if (ctrl->mwq) destroy_workqueue(ctrl->mwq); kfree(ctrl->ngd); ctrl->ngd = NULL; } static int __maybe_unused qcom_slim_ngd_runtime_idle(struct device *dev) { struct qcom_slim_ngd_ctrl *ctrl = dev_get_drvdata(dev); if (ctrl->state == QCOM_SLIM_NGD_CTRL_AWAKE) ctrl->state = QCOM_SLIM_NGD_CTRL_IDLE; pm_request_autosuspend(dev); return -EAGAIN; } static int __maybe_unused qcom_slim_ngd_runtime_suspend(struct device *dev) { struct qcom_slim_ngd_ctrl *ctrl = dev_get_drvdata(dev); int ret = 0; qcom_slim_ngd_exit_dma(ctrl); if (!ctrl->qmi.handle) return 0; ret = qcom_slim_qmi_power_request(ctrl, false); if (ret && ret != -EBUSY) dev_info(ctrl->dev, "slim resource not idle:%d\n", ret); if (!ret || ret == -ETIMEDOUT) ctrl->state = QCOM_SLIM_NGD_CTRL_ASLEEP; return ret; } static const struct dev_pm_ops qcom_slim_ngd_dev_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume) SET_RUNTIME_PM_OPS( qcom_slim_ngd_runtime_suspend, qcom_slim_ngd_runtime_resume, qcom_slim_ngd_runtime_idle ) }; static struct platform_driver qcom_slim_ngd_ctrl_driver = { .probe = qcom_slim_ngd_ctrl_probe, .remove_new = qcom_slim_ngd_ctrl_remove, .driver = { .name = "qcom,slim-ngd-ctrl", .of_match_table = qcom_slim_ngd_dt_match, }, }; static struct platform_driver qcom_slim_ngd_driver = { .probe = qcom_slim_ngd_probe, .remove_new = qcom_slim_ngd_remove, .driver = { .name = QCOM_SLIM_NGD_DRV_NAME, .pm = &qcom_slim_ngd_dev_pm_ops, }, }; module_platform_driver(qcom_slim_ngd_ctrl_driver); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("Qualcomm SLIMBus NGD controller");
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