| /* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| #include <linux/irq.h> |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/io.h> |
| #include <linux/interrupt.h> |
| #include <linux/platform_device.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/slimbus/slimbus.h> |
| #include <linux/delay.h> |
| #include <linux/kthread.h> |
| #include <linux/clk.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/of.h> |
| #include <linux/of_slimbus.h> |
| #include <linux/timer.h> |
| #include <mach/sps.h> |
| #include "slim-msm.h" |
| #include <mach/qdsp6v2/apr.h> |
| |
| #define NGD_SLIM_NAME "ngd_msm_ctrl" |
| #define SLIM_LA_MGR 0xFF |
| #define SLIM_ROOT_FREQ 24576000 |
| #define LADDR_RETRY 5 |
| |
| #define NGD_BASE_V1(r) (((r) % 2) ? 0x800 : 0xA00) |
| #define NGD_BASE_V2(r) (((r) % 2) ? 0x1000 : 0x2000) |
| #define NGD_BASE(r, v) ((v) ? NGD_BASE_V2(r) : NGD_BASE_V1(r)) |
| /* NGD (Non-ported Generic Device) registers */ |
| enum ngd_reg { |
| NGD_CFG = 0x0, |
| NGD_STATUS = 0x4, |
| NGD_RX_MSGQ_CFG = 0x8, |
| NGD_INT_EN = 0x10, |
| NGD_INT_STAT = 0x14, |
| NGD_INT_CLR = 0x18, |
| NGD_TX_MSG = 0x30, |
| NGD_RX_MSG = 0x70, |
| NGD_IE_STAT = 0xF0, |
| NGD_VE_STAT = 0x100, |
| }; |
| |
| enum ngd_msg_cfg { |
| NGD_CFG_ENABLE = 1, |
| NGD_CFG_RX_MSGQ_EN = 1 << 1, |
| NGD_CFG_TX_MSGQ_EN = 1 << 2, |
| }; |
| |
| enum ngd_intr { |
| NGD_INT_RECFG_DONE = 1 << 24, |
| NGD_INT_TX_NACKED_2 = 1 << 25, |
| NGD_INT_MSG_BUF_CONTE = 1 << 26, |
| NGD_INT_MSG_TX_INVAL = 1 << 27, |
| NGD_INT_IE_VE_CHG = 1 << 28, |
| NGD_INT_DEV_ERR = 1 << 29, |
| NGD_INT_RX_MSG_RCVD = 1 << 30, |
| NGD_INT_TX_MSG_SENT = 1 << 31, |
| }; |
| |
| enum ngd_offsets { |
| NGD_NACKED_MC = 0x7F00000, |
| NGD_ACKED_MC = 0xFE000, |
| NGD_ERROR = 0x1800, |
| NGD_MSGQ_SUPPORT = 0x400, |
| NGD_RX_MSGQ_TIME_OUT = 0x16, |
| NGD_ENUMERATED = 0x1, |
| NGD_TX_BUSY = 0x0, |
| }; |
| |
| enum ngd_status { |
| NGD_LADDR = 1 << 1, |
| }; |
| |
| static int ngd_slim_runtime_resume(struct device *device); |
| static int ngd_slim_power_up(struct msm_slim_ctrl *dev); |
| |
| static irqreturn_t ngd_slim_interrupt(int irq, void *d) |
| { |
| struct msm_slim_ctrl *dev = (struct msm_slim_ctrl *)d; |
| void __iomem *ngd = dev->base + NGD_BASE(dev->ctrl.nr, dev->ver); |
| u32 stat = readl_relaxed(ngd + NGD_INT_STAT); |
| u32 pstat; |
| |
| if (stat & NGD_INT_TX_MSG_SENT) { |
| writel_relaxed(NGD_INT_TX_MSG_SENT, ngd + NGD_INT_CLR); |
| /* Make sure interrupt is cleared */ |
| mb(); |
| if (dev->wr_comp) |
| complete(dev->wr_comp); |
| } else 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(dev->dev, "NGD interrupt error:0x%x", stat); |
| writel_relaxed(stat, ngd + NGD_INT_CLR); |
| /* Guarantee that error interrupts are cleared */ |
| mb(); |
| if (((stat & NGD_INT_TX_NACKED_2) || |
| (stat & NGD_INT_MSG_TX_INVAL))) { |
| dev->err = -EIO; |
| if (dev->wr_comp) |
| complete(dev->wr_comp); |
| } |
| } |
| if (stat & NGD_INT_RX_MSG_RCVD) { |
| u32 rx_buf[10]; |
| u8 len, i; |
| rx_buf[0] = readl_relaxed(ngd + NGD_RX_MSG); |
| len = rx_buf[0] & 0x1F; |
| for (i = 1; i < ((len + 3) >> 2); i++) { |
| rx_buf[i] = readl_relaxed(ngd + NGD_RX_MSG + |
| (4 * i)); |
| dev_dbg(dev->dev, "REG-RX data: %x\n", rx_buf[i]); |
| } |
| msm_slim_rx_enqueue(dev, rx_buf, len); |
| writel_relaxed(NGD_INT_RX_MSG_RCVD, |
| ngd + NGD_INT_CLR); |
| /* |
| * Guarantee that CLR bit write goes through before |
| * queuing work |
| */ |
| mb(); |
| if (dev->use_rx_msgqs == MSM_MSGQ_ENABLED) |
| dev_err(dev->dev, |
| "direct message received even with RX MSGQs"); |
| else |
| complete(&dev->rx_msgq_notify); |
| } |
| if (stat & NGD_INT_RECFG_DONE) { |
| writel_relaxed(NGD_INT_RECFG_DONE, ngd + NGD_INT_CLR); |
| /* Guarantee RECONFIG DONE interrupt is cleared */ |
| mb(); |
| /* In satellite mode, just log the reconfig done IRQ */ |
| dev_dbg(dev->dev, "reconfig done IRQ for NGD"); |
| } |
| if (stat & NGD_INT_IE_VE_CHG) { |
| writel_relaxed(NGD_INT_IE_VE_CHG, ngd + NGD_INT_CLR); |
| /* Guarantee IE VE change interrupt is cleared */ |
| mb(); |
| dev_err(dev->dev, "NGD IE VE change"); |
| } |
| |
| pstat = readl_relaxed(PGD_THIS_EE(PGD_PORT_INT_ST_EEn, dev->ver)); |
| if (pstat != 0) |
| return msm_slim_port_irq_handler(dev, pstat); |
| return IRQ_HANDLED; |
| } |
| |
| static int ngd_qmi_available(struct notifier_block *n, unsigned long code, |
| void *_cmd) |
| { |
| struct msm_slim_qmi *qmi = container_of(n, struct msm_slim_qmi, nb); |
| struct msm_slim_ctrl *dev = |
| container_of(qmi, struct msm_slim_ctrl, qmi); |
| pr_info("Slimbus QMI NGD CB received event:%ld", code); |
| switch (code) { |
| case QMI_SERVER_ARRIVE: |
| schedule_work(&qmi->ssr_up); |
| break; |
| case QMI_SERVER_EXIT: |
| dev->state = MSM_CTRL_DOWN; |
| /* make sure autosuspend is not called until ADSP comes up*/ |
| pm_runtime_get_noresume(dev->dev); |
| /* Reset ctrl_up completion */ |
| init_completion(&dev->ctrl_up); |
| schedule_work(&qmi->ssr_down); |
| break; |
| default: |
| break; |
| } |
| return 0; |
| } |
| |
| static int mdm_ssr_notify_cb(struct notifier_block *n, unsigned long code, |
| void *_cmd) |
| { |
| struct msm_slim_mdm *mdm = container_of(n, struct msm_slim_mdm, nb); |
| struct msm_slim_ctrl *dev = container_of(mdm, struct msm_slim_ctrl, |
| mdm); |
| int ret; |
| |
| switch (code) { |
| case SUBSYS_BEFORE_SHUTDOWN: |
| /* make sure runtime-pm doesn't suspend during modem SSR */ |
| pm_runtime_get_noresume(dev->dev); |
| break; |
| case SUBSYS_AFTER_POWERUP: |
| ret = msm_slim_qmi_check_framer_request(dev); |
| dev_err(dev->dev, |
| "%s:SLIM %lu external_modem SSR notify cb, ret %d", |
| __func__, code, ret); |
| /* |
| * Next codec transaction will reinit the HW |
| * if it was suspended |
| */ |
| if (pm_runtime_suspended(dev->dev) || |
| dev->state >= MSM_CTRL_ASLEEP) { |
| break; |
| } else { |
| ngd_slim_power_up(dev); |
| msm_slim_put_ctrl(dev); |
| } |
| default: |
| break; |
| } |
| return NOTIFY_DONE; |
| } |
| |
| static int ngd_get_tid(struct slim_controller *ctrl, struct slim_msg_txn *txn, |
| u8 *tid, struct completion *done) |
| { |
| struct msm_slim_ctrl *dev = slim_get_ctrldata(ctrl); |
| mutex_lock(&ctrl->m_ctrl); |
| if (ctrl->last_tid <= 255) { |
| ctrl->txnt = krealloc(ctrl->txnt, |
| (ctrl->last_tid + 1) * |
| sizeof(struct slim_msg_txn *), |
| GFP_KERNEL); |
| if (!ctrl->txnt) { |
| mutex_unlock(&ctrl->m_ctrl); |
| return -ENOMEM; |
| } |
| dev->msg_cnt = ctrl->last_tid; |
| ctrl->last_tid++; |
| } else { |
| int i; |
| for (i = 0; i < 256; i++) { |
| dev->msg_cnt = ((dev->msg_cnt + 1) & 0xFF); |
| if (ctrl->txnt[dev->msg_cnt] == NULL) |
| break; |
| } |
| if (i >= 256) { |
| dev_err(&ctrl->dev, "out of TID"); |
| mutex_unlock(&ctrl->m_ctrl); |
| return -ENOMEM; |
| } |
| } |
| ctrl->txnt[dev->msg_cnt] = txn; |
| txn->tid = dev->msg_cnt; |
| txn->comp = done; |
| *tid = dev->msg_cnt; |
| mutex_unlock(&ctrl->m_ctrl); |
| return 0; |
| } |
| static int ngd_xfer_msg(struct slim_controller *ctrl, struct slim_msg_txn *txn) |
| { |
| DECLARE_COMPLETION_ONSTACK(done); |
| DECLARE_COMPLETION_ONSTACK(tx_sent); |
| |
| struct msm_slim_ctrl *dev = slim_get_ctrldata(ctrl); |
| u32 *pbuf; |
| u8 *puc; |
| int ret = 0; |
| u8 la = txn->la; |
| u8 txn_mt; |
| u16 txn_mc = txn->mc; |
| u8 wbuf[SLIM_MSGQ_BUF_LEN]; |
| |
| if (!pm_runtime_enabled(dev->dev) && dev->state == MSM_CTRL_ASLEEP && |
| txn->mc != SLIM_USR_MC_REPORT_SATELLITE) { |
| /* |
| * Counter-part of system-suspend when runtime-pm is not enabled |
| * This way, resume can be left empty and device will be put in |
| * active mode only if client requests anything on the bus |
| * If the state was DOWN, SSR UP notification will take |
| * care of putting the device in active state. |
| */ |
| ngd_slim_runtime_resume(dev->dev); |
| } |
| if ((txn->mc == (SLIM_MSG_CLK_PAUSE_SEQ_FLG | |
| SLIM_MSG_MC_RECONFIGURE_NOW)) && |
| dev->state <= MSM_CTRL_IDLE) { |
| msm_slim_disconnect_endp(dev, &dev->rx_msgq, |
| &dev->use_rx_msgqs); |
| msm_slim_disconnect_endp(dev, &dev->tx_msgq, |
| &dev->use_tx_msgqs); |
| return msm_slim_qmi_power_request(dev, false); |
| } |
| else if (txn->mc & SLIM_MSG_CLK_PAUSE_SEQ_FLG) |
| return 0; |
| |
| 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 is tried when controller is down, wait for ADSP to boot */ |
| if (txn->mc != SLIM_USR_MC_REPORT_SATELLITE) { |
| if (dev->state == MSM_CTRL_DOWN) { |
| u8 mc = (u8)txn->mc; |
| int timeout; |
| dev_err(dev->dev, "ADSP slimbus not up yet"); |
| /* |
| * Messages related to data channel management can't |
| * wait since they are holding reconfiguration lock. |
| * clk_pause in resume (which can change state back to |
| * MSM_CTRL_AWAKE), will need that lock. |
| * Port disconnection, channel removal calls should pass |
| * through since there is no activity on the bus and |
| * those calls are triggered by clients due to |
| * device_down callback in that situation. |
| * Returning 0 on the disconnections and |
| * removals will ensure consistent state of channels, |
| * ports with the HW |
| * Remote requests to remove channel/port will be |
| * returned from the path where they wait on |
| * acknowledgement from ADSP |
| */ |
| if ((txn->mt == SLIM_MSG_MT_DEST_REFERRED_USER) && |
| ((mc == SLIM_USR_MC_CHAN_CTRL || |
| mc == SLIM_USR_MC_DISCONNECT_PORT || |
| mc == SLIM_USR_MC_RECONFIG_NOW))) |
| return -EREMOTEIO; |
| if ((txn->mt == SLIM_MSG_MT_CORE) && |
| ((mc == SLIM_MSG_MC_DISCONNECT_PORT || |
| mc == SLIM_MSG_MC_NEXT_REMOVE_CHANNEL || |
| mc == SLIM_USR_MC_RECONFIG_NOW))) |
| return 0; |
| if ((txn->mt == SLIM_MSG_MT_CORE) && |
| ((mc >= SLIM_MSG_MC_CONNECT_SOURCE && |
| mc <= SLIM_MSG_MC_CHANGE_CONTENT) || |
| (mc >= SLIM_MSG_MC_BEGIN_RECONFIGURATION && |
| mc <= SLIM_MSG_MC_RECONFIGURE_NOW))) |
| return -EREMOTEIO; |
| if ((txn->mt == SLIM_MSG_MT_DEST_REFERRED_USER) && |
| ((mc >= SLIM_USR_MC_DEFINE_CHAN && |
| mc < SLIM_USR_MC_DISCONNECT_PORT))) |
| return -EREMOTEIO; |
| timeout = wait_for_completion_timeout(&dev->ctrl_up, |
| HZ); |
| if (!timeout && dev->state == MSM_CTRL_DOWN) |
| return -ETIMEDOUT; |
| } |
| ret = msm_slim_get_ctrl(dev); |
| /* |
| * Runtime-pm's callbacks are not called until runtime-pm's |
| * error status is cleared |
| * Setting runtime status to suspended clears the error |
| * It also makes HW status cosistent with what SW has it here |
| */ |
| if (ret == -ENETRESET && dev->state == MSM_CTRL_DOWN) { |
| pm_runtime_set_suspended(dev->dev); |
| msm_slim_put_ctrl(dev); |
| return -EREMOTEIO; |
| } else if (ret >= 0) { |
| dev->state = MSM_CTRL_AWAKE; |
| } |
| } |
| mutex_lock(&dev->tx_lock); |
| |
| if (txn->mc != SLIM_USR_MC_REPORT_SATELLITE && |
| (dev->state != MSM_CTRL_AWAKE)) { |
| dev_err(dev->dev, "controller not ready"); |
| mutex_unlock(&dev->tx_lock); |
| msm_slim_put_ctrl(dev); |
| return -EREMOTEIO; |
| } |
| 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)) { |
| int i = 0; |
| txn->mt = SLIM_MSG_MT_DEST_REFERRED_USER; |
| if (txn->mc == SLIM_MSG_MC_CONNECT_SOURCE) |
| txn->mc = SLIM_USR_MC_CONNECT_SRC; |
| else if (txn->mc == SLIM_MSG_MC_CONNECT_SINK) |
| txn->mc = SLIM_USR_MC_CONNECT_SINK; |
| else if (txn->mc == SLIM_MSG_MC_DISCONNECT_PORT) |
| txn->mc = SLIM_USR_MC_DISCONNECT_PORT; |
| if (txn->la == SLIM_LA_MGR) { |
| if (dev->pgdla == SLIM_LA_MGR) { |
| u8 ea[] = {0, QC_DEVID_PGD, 0, 0, QC_MFGID_MSB, |
| QC_MFGID_LSB}; |
| ea[2] = (u8)(dev->pdata.eapc & 0xFF); |
| ea[3] = (u8)((dev->pdata.eapc & 0xFF00) >> 8); |
| mutex_unlock(&dev->tx_lock); |
| ret = dev->ctrl.get_laddr(&dev->ctrl, ea, 6, |
| &dev->pgdla); |
| pr_debug("SLIM PGD LA:0x%x, ret:%d", dev->pgdla, |
| ret); |
| if (ret) { |
| pr_err("Incorrect SLIM-PGD EAPC:0x%x", |
| dev->pdata.eapc); |
| return ret; |
| } |
| mutex_lock(&dev->tx_lock); |
| } |
| txn->la = dev->pgdla; |
| } |
| wbuf[i++] = txn->la; |
| la = SLIM_LA_MGR; |
| wbuf[i++] = txn->wbuf[0]; |
| if (txn->mc != SLIM_USR_MC_DISCONNECT_PORT) |
| wbuf[i++] = txn->wbuf[1]; |
| ret = ngd_get_tid(ctrl, txn, &wbuf[i++], &done); |
| if (ret) { |
| pr_err("TID for connect/disconnect fail:%d", ret); |
| goto ngd_xfer_err; |
| } |
| txn->len = i; |
| txn->wbuf = wbuf; |
| txn->rl = txn->len + 4; |
| } |
| txn->rl--; |
| pbuf = msm_get_msg_buf(dev, txn->rl); |
| if (!pbuf) { |
| dev_err(dev->dev, "Message buffer unavailable"); |
| ret = -ENOMEM; |
| goto ngd_xfer_err; |
| } |
| dev->err = 0; |
| |
| if (txn->dt == SLIM_MSG_DEST_ENUMADDR) { |
| ret = -EPROTONOSUPPORT; |
| goto ngd_xfer_err; |
| } |
| if (txn->dt == SLIM_MSG_DEST_LOGICALADDR) |
| *pbuf = SLIM_MSG_ASM_FIRST_WORD(txn->rl, txn->mt, txn->mc, 0, |
| la); |
| else |
| *pbuf = SLIM_MSG_ASM_FIRST_WORD(txn->rl, txn->mt, txn->mc, 1, |
| la); |
| if (txn->dt == SLIM_MSG_DEST_LOGICALADDR) |
| puc = ((u8 *)pbuf) + 3; |
| else |
| puc = ((u8 *)pbuf) + 2; |
| if (txn->rbuf) |
| *(puc++) = txn->tid; |
| if ((txn->mt == SLIM_MSG_MT_CORE) && |
| ((txn->mc >= SLIM_MSG_MC_REQUEST_INFORMATION && |
| txn->mc <= SLIM_MSG_MC_REPORT_INFORMATION) || |
| (txn->mc >= SLIM_MSG_MC_REQUEST_VALUE && |
| txn->mc <= SLIM_MSG_MC_CHANGE_VALUE))) { |
| *(puc++) = (txn->ec & 0xFF); |
| *(puc++) = (txn->ec >> 8)&0xFF; |
| } |
| if (txn->wbuf) |
| memcpy(puc, txn->wbuf, txn->len); |
| if (txn->mt == SLIM_MSG_MT_DEST_REFERRED_USER && |
| (txn->mc == SLIM_USR_MC_CONNECT_SRC || |
| txn->mc == SLIM_USR_MC_CONNECT_SINK || |
| txn->mc == SLIM_USR_MC_DISCONNECT_PORT) && txn->wbuf && |
| wbuf[0] == dev->pgdla) { |
| if (txn->mc != SLIM_USR_MC_DISCONNECT_PORT) |
| dev->err = msm_slim_connect_pipe_port(dev, wbuf[1]); |
| else { |
| /* |
| * Remove channel disconnects master-side ports from |
| * channel. No need to send that again on the bus |
| * Only disable port |
| */ |
| writel_relaxed(0, PGD_PORT(PGD_PORT_CFGn, |
| (wbuf[1] + dev->port_b), dev->ver)); |
| mutex_unlock(&dev->tx_lock); |
| msm_slim_put_ctrl(dev); |
| return 0; |
| } |
| if (dev->err) { |
| dev_err(dev->dev, "pipe-port connect err:%d", dev->err); |
| goto ngd_xfer_err; |
| } |
| /* Add port-base to port number if this is manager side port */ |
| puc[1] += dev->port_b; |
| } |
| dev->err = 0; |
| /* |
| * If it's a read txn, it may be freed if a response is received by |
| * received thread before reaching end of this function. |
| * mc, mt may have changed to convert standard slimbus code/type to |
| * satellite user-defined message. Reinitialize again |
| */ |
| txn_mc = txn->mc; |
| txn_mt = txn->mt; |
| dev->wr_comp = &tx_sent; |
| ret = msm_send_msg_buf(dev, pbuf, txn->rl, |
| NGD_BASE(dev->ctrl.nr, dev->ver) + NGD_TX_MSG); |
| if (!ret) { |
| int timeout = wait_for_completion_timeout(&tx_sent, HZ); |
| if (!timeout) { |
| ret = -ETIMEDOUT; |
| /* |
| * disconnect/recoonect pipe so that subsequent |
| * transactions don't timeout due to unavailable |
| * descriptors |
| */ |
| msm_slim_disconnect_endp(dev, &dev->tx_msgq, |
| &dev->use_tx_msgqs); |
| msm_slim_connect_endp(dev, &dev->tx_msgq, NULL); |
| } else { |
| ret = dev->err; |
| } |
| } |
| dev->wr_comp = NULL; |
| if (ret) { |
| u32 conf, stat, rx_msgq, int_stat, int_en, int_clr; |
| void __iomem *ngd = dev->base + NGD_BASE(dev->ctrl.nr, |
| dev->ver); |
| dev_err(dev->dev, "TX failed :MC:0x%x,mt:0x%x, ret:%d, ver:%d", |
| txn_mc, txn_mt, ret, dev->ver); |
| conf = readl_relaxed(ngd); |
| stat = readl_relaxed(ngd + NGD_STATUS); |
| rx_msgq = readl_relaxed(ngd + NGD_RX_MSGQ_CFG); |
| int_stat = readl_relaxed(ngd + NGD_INT_STAT); |
| int_en = readl_relaxed(ngd + NGD_INT_EN); |
| int_clr = readl_relaxed(ngd + NGD_INT_CLR); |
| |
| pr_err("conf:0x%x,stat:0x%x,rxmsgq:0x%x", conf, stat, rx_msgq); |
| pr_err("int_stat:0x%x,int_en:0x%x,int_cll:0x%x", int_stat, |
| int_en, int_clr); |
| } else if (txn_mt == SLIM_MSG_MT_DEST_REFERRED_USER && |
| (txn_mc == SLIM_USR_MC_CONNECT_SRC || |
| txn_mc == SLIM_USR_MC_CONNECT_SINK || |
| txn_mc == SLIM_USR_MC_DISCONNECT_PORT)) { |
| int timeout; |
| mutex_unlock(&dev->tx_lock); |
| msm_slim_put_ctrl(dev); |
| timeout = wait_for_completion_timeout(txn->comp, HZ); |
| if (!timeout) |
| ret = -ETIMEDOUT; |
| else |
| ret = txn->ec; |
| if (ret) { |
| pr_err("connect/disconnect:0x%x,tid:%d err:%d", txn->mc, |
| txn->tid, ret); |
| mutex_lock(&ctrl->m_ctrl); |
| ctrl->txnt[txn->tid] = NULL; |
| mutex_unlock(&ctrl->m_ctrl); |
| } |
| return ret ? ret : dev->err; |
| } |
| ngd_xfer_err: |
| mutex_unlock(&dev->tx_lock); |
| if (txn_mc != SLIM_USR_MC_REPORT_SATELLITE) |
| msm_slim_put_ctrl(dev); |
| return ret ? ret : dev->err; |
| } |
| |
| static int ngd_xferandwait_ack(struct slim_controller *ctrl, |
| struct slim_msg_txn *txn) |
| { |
| int ret = ngd_xfer_msg(ctrl, txn); |
| if (!ret) { |
| int timeout; |
| timeout = wait_for_completion_timeout(txn->comp, HZ); |
| if (!timeout) |
| ret = -ETIMEDOUT; |
| else |
| ret = txn->ec; |
| } |
| |
| if (ret) { |
| if (ret != -EREMOTEIO || txn->mc != SLIM_USR_MC_CHAN_CTRL) |
| pr_err("master msg:0x%x,tid:%d ret:%d", txn->mc, |
| txn->tid, ret); |
| mutex_lock(&ctrl->m_ctrl); |
| ctrl->txnt[txn->tid] = NULL; |
| mutex_unlock(&ctrl->m_ctrl); |
| } |
| |
| return ret; |
| } |
| |
| static int ngd_allocbw(struct slim_device *sb, int *subfrmc, int *clkgear) |
| { |
| int ret; |
| struct slim_pending_ch *pch; |
| struct slim_msg_txn txn; |
| struct slim_controller *ctrl = sb->ctrl; |
| DECLARE_COMPLETION_ONSTACK(done); |
| u8 wbuf[SLIM_MSGQ_BUF_LEN]; |
| |
| *clkgear = ctrl->clkgear; |
| *subfrmc = 0; |
| txn.mt = SLIM_MSG_MT_DEST_REFERRED_USER; |
| txn.dt = SLIM_MSG_DEST_LOGICALADDR; |
| txn.la = SLIM_LA_MGR; |
| txn.len = 0; |
| txn.ec = 0; |
| txn.wbuf = wbuf; |
| txn.rbuf = NULL; |
| |
| if (ctrl->sched.msgsl != ctrl->sched.pending_msgsl) { |
| pr_debug("slim reserve BW for messaging: req: %d", |
| ctrl->sched.pending_msgsl); |
| txn.mc = SLIM_USR_MC_REQ_BW; |
| wbuf[txn.len++] = ((sb->laddr & 0x1f) | |
| ((u8)(ctrl->sched.pending_msgsl & 0x7) << 5)); |
| wbuf[txn.len++] = (u8)(ctrl->sched.pending_msgsl >> 3); |
| ret = ngd_get_tid(ctrl, &txn, &wbuf[txn.len++], &done); |
| if (ret) |
| return ret; |
| txn.rl = txn.len + 4; |
| ret = ngd_xferandwait_ack(ctrl, &txn); |
| if (ret) |
| return ret; |
| |
| txn.mc = SLIM_USR_MC_RECONFIG_NOW; |
| txn.len = 2; |
| wbuf[1] = sb->laddr; |
| txn.rl = txn.len + 4; |
| ret = ngd_get_tid(ctrl, &txn, &wbuf[0], &done); |
| if (ret) |
| return ret; |
| ret = ngd_xferandwait_ack(ctrl, &txn); |
| if (ret) |
| return ret; |
| |
| txn.len = 0; |
| } |
| list_for_each_entry(pch, &sb->mark_define, pending) { |
| struct slim_ich *slc; |
| slc = &ctrl->chans[pch->chan]; |
| if (!slc) { |
| pr_err("no channel in define?"); |
| return -ENXIO; |
| } |
| if (txn.len == 0) { |
| /* Per protocol, only last 5 bits for client no. */ |
| wbuf[txn.len++] = (u8) (slc->prop.dataf << 5) | |
| (sb->laddr & 0x1f); |
| wbuf[txn.len] = slc->seglen; |
| if (slc->coeff == SLIM_COEFF_3) |
| wbuf[txn.len] |= 1 << 5; |
| wbuf[txn.len++] |= slc->prop.auxf << 6; |
| wbuf[txn.len++] = slc->rootexp << 4 | slc->prop.prot; |
| wbuf[txn.len++] = slc->prrate; |
| ret = ngd_get_tid(ctrl, &txn, &wbuf[txn.len++], &done); |
| if (ret) { |
| pr_err("no tid for channel define?"); |
| return -ENXIO; |
| } |
| } |
| wbuf[txn.len++] = slc->chan; |
| pr_debug("slim define chan:%d, tid:0x%x", slc->chan, txn.tid); |
| } |
| if (txn.len) { |
| txn.mc = SLIM_USR_MC_DEF_ACT_CHAN; |
| txn.rl = txn.len + 4; |
| ret = ngd_xferandwait_ack(ctrl, &txn); |
| if (ret) |
| return ret; |
| |
| txn.mc = SLIM_USR_MC_RECONFIG_NOW; |
| txn.len = 2; |
| wbuf[1] = sb->laddr; |
| txn.rl = txn.len + 4; |
| ret = ngd_get_tid(ctrl, &txn, &wbuf[0], &done); |
| if (ret) |
| return ret; |
| ret = ngd_xferandwait_ack(ctrl, &txn); |
| if (ret) |
| return ret; |
| } |
| txn.len = 0; |
| list_for_each_entry(pch, &sb->mark_removal, pending) { |
| struct slim_ich *slc; |
| slc = &ctrl->chans[pch->chan]; |
| if (!slc) { |
| pr_err("no channel in removal?"); |
| return -ENXIO; |
| } |
| if (txn.len == 0) { |
| /* Per protocol, only last 5 bits for client no. */ |
| wbuf[txn.len++] = (u8) (SLIM_CH_REMOVE << 6) | |
| (sb->laddr & 0x1f); |
| ret = ngd_get_tid(ctrl, &txn, &wbuf[txn.len++], &done); |
| if (ret) { |
| pr_err("no tid for channel define?"); |
| return -ENXIO; |
| } |
| } |
| wbuf[txn.len++] = slc->chan; |
| pr_debug("slim remove chan:%d, tid:0x%x", slc->chan, txn.tid); |
| } |
| if (txn.len) { |
| txn.mc = SLIM_USR_MC_CHAN_CTRL; |
| txn.rl = txn.len + 4; |
| ret = ngd_xferandwait_ack(ctrl, &txn); |
| /* HW restarting, channel removal should succeed */ |
| if (ret == -EREMOTEIO) |
| return 0; |
| else if (ret) |
| return ret; |
| |
| txn.mc = SLIM_USR_MC_RECONFIG_NOW; |
| txn.len = 2; |
| wbuf[1] = sb->laddr; |
| txn.rl = txn.len + 4; |
| ret = ngd_get_tid(ctrl, &txn, &wbuf[0], &done); |
| if (ret) |
| return ret; |
| ret = ngd_xferandwait_ack(ctrl, &txn); |
| if (ret) |
| return ret; |
| txn.len = 0; |
| } |
| return 0; |
| } |
| |
| static int ngd_set_laddr(struct slim_controller *ctrl, const u8 *ea, |
| u8 elen, u8 laddr) |
| { |
| return 0; |
| } |
| |
| static int ngd_get_laddr(struct slim_controller *ctrl, const u8 *ea, |
| u8 elen, u8 *laddr) |
| { |
| int ret; |
| u8 wbuf[10]; |
| struct slim_msg_txn txn; |
| DECLARE_COMPLETION_ONSTACK(done); |
| txn.mt = SLIM_MSG_MT_DEST_REFERRED_USER; |
| txn.dt = SLIM_MSG_DEST_LOGICALADDR; |
| txn.la = SLIM_LA_MGR; |
| txn.ec = 0; |
| ret = ngd_get_tid(ctrl, &txn, &wbuf[0], &done); |
| if (ret) { |
| return ret; |
| } |
| memcpy(&wbuf[1], ea, elen); |
| txn.mc = SLIM_USR_MC_ADDR_QUERY; |
| txn.rl = 11; |
| txn.len = 7; |
| txn.wbuf = wbuf; |
| txn.rbuf = NULL; |
| ret = ngd_xferandwait_ack(ctrl, &txn); |
| if (!ret && txn.la == 0xFF) |
| ret = -ENXIO; |
| else if (!ret) |
| *laddr = txn.la; |
| return ret; |
| } |
| |
| static void ngd_slim_setup_msg_path(struct msm_slim_ctrl *dev) |
| { |
| if (dev->state == MSM_CTRL_DOWN) { |
| msm_slim_sps_init(dev, dev->bam_mem, |
| NGD_BASE(dev->ctrl.nr, |
| dev->ver) + NGD_STATUS, true); |
| } else { |
| if (dev->use_rx_msgqs == MSM_MSGQ_DISABLED) |
| goto setup_tx_msg_path; |
| msm_slim_connect_endp(dev, &dev->rx_msgq, |
| &dev->rx_msgq_notify); |
| |
| setup_tx_msg_path: |
| if (dev->use_tx_msgqs == MSM_MSGQ_DISABLED) |
| return; |
| msm_slim_connect_endp(dev, &dev->tx_msgq, |
| NULL); |
| } |
| } |
| |
| static void ngd_slim_rx(struct msm_slim_ctrl *dev, u8 *buf) |
| { |
| u8 mc, mt, len; |
| int ret; |
| u32 msgq_en = 1; |
| |
| len = buf[0] & 0x1F; |
| mt = (buf[0] >> 5) & 0x7; |
| mc = buf[1]; |
| if (mc == SLIM_USR_MC_MASTER_CAPABILITY && |
| mt == SLIM_MSG_MT_SRC_REFERRED_USER) { |
| struct slim_msg_txn txn; |
| int retries = 0; |
| u8 wbuf[8]; |
| txn.dt = SLIM_MSG_DEST_LOGICALADDR; |
| txn.ec = 0; |
| txn.rbuf = NULL; |
| 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.wbuf = wbuf; |
| txn.len = 4; |
| pr_info("SLIM SAT: Received master capability"); |
| if (dev->state >= MSM_CTRL_ASLEEP) { |
| ngd_slim_setup_msg_path(dev); |
| if (dev->use_rx_msgqs == MSM_MSGQ_ENABLED) |
| msgq_en |= NGD_CFG_RX_MSGQ_EN; |
| if (dev->use_tx_msgqs == MSM_MSGQ_ENABLED) |
| msgq_en |= NGD_CFG_TX_MSGQ_EN; |
| writel_relaxed(msgq_en, dev->base + |
| NGD_BASE(dev->ctrl.nr, dev->ver)); |
| /* make sure NGD MSG-Q config goes through */ |
| mb(); |
| } |
| capability_retry: |
| txn.rl = 8; |
| ret = ngd_xfer_msg(&dev->ctrl, &txn); |
| if (!ret) { |
| enum msm_ctrl_state prev_state = dev->state; |
| pr_info("SLIM SAT: capability exchange successful"); |
| dev->state = MSM_CTRL_AWAKE; |
| if (prev_state >= MSM_CTRL_ASLEEP) |
| complete(&dev->reconf); |
| else |
| pr_err("SLIM: unexpected capability, state:%d", |
| prev_state); |
| /* ADSP SSR, send device_up notifications */ |
| if (prev_state == MSM_CTRL_DOWN) |
| schedule_work(&dev->slave_notify); |
| } else if (ret == -EIO) { |
| pr_info("capability message NACKed, retrying"); |
| if (retries < INIT_MX_RETRIES) { |
| msleep(DEF_RETRY_MS); |
| retries++; |
| goto capability_retry; |
| } |
| } |
| } |
| if (mc == SLIM_MSG_MC_REPLY_INFORMATION || |
| mc == SLIM_MSG_MC_REPLY_VALUE) { |
| u8 tid = buf[3]; |
| dev_dbg(dev->dev, "tid:%d, len:%d\n", tid, len); |
| slim_msg_response(&dev->ctrl, &buf[4], tid, |
| len - 4); |
| pm_runtime_mark_last_busy(dev->dev); |
| } |
| if (mc == SLIM_USR_MC_ADDR_REPLY && |
| mt == SLIM_MSG_MT_SRC_REFERRED_USER) { |
| struct slim_msg_txn *txn; |
| u8 failed_ea[6] = {0, 0, 0, 0, 0, 0}; |
| mutex_lock(&dev->ctrl.m_ctrl); |
| txn = dev->ctrl.txnt[buf[3]]; |
| if (!txn) { |
| pr_err("LADDR response after timeout, tid:0x%x", |
| buf[3]); |
| mutex_unlock(&dev->ctrl.m_ctrl); |
| return; |
| } |
| if (memcmp(&buf[4], failed_ea, 6)) |
| txn->la = buf[10]; |
| dev->ctrl.txnt[buf[3]] = NULL; |
| mutex_unlock(&dev->ctrl.m_ctrl); |
| complete(txn->comp); |
| } |
| if (mc == SLIM_USR_MC_GENERIC_ACK && |
| mt == SLIM_MSG_MT_SRC_REFERRED_USER) { |
| struct slim_msg_txn *txn; |
| mutex_lock(&dev->ctrl.m_ctrl); |
| txn = dev->ctrl.txnt[buf[3]]; |
| if (!txn) { |
| pr_err("ACK received after timeout, tid:0x%x", |
| buf[3]); |
| mutex_unlock(&dev->ctrl.m_ctrl); |
| return; |
| } |
| dev_dbg(dev->dev, "got response:tid:%d, response:0x%x", |
| (int)buf[3], buf[4]); |
| if (!(buf[4] & MSM_SAT_SUCCSS)) { |
| dev_err(dev->dev, "TID:%d, NACK code:0x%x", (int)buf[3], |
| buf[4]); |
| txn->ec = -EIO; |
| } |
| dev->ctrl.txnt[buf[3]] = NULL; |
| mutex_unlock(&dev->ctrl.m_ctrl); |
| complete(txn->comp); |
| } |
| } |
| |
| static int ngd_slim_power_up(struct msm_slim_ctrl *dev) |
| { |
| void __iomem *ngd; |
| int timeout, ret = 0; |
| enum msm_ctrl_state cur_state = dev->state; |
| u32 laddr; |
| u32 ngd_int = (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); |
| |
| if (cur_state == MSM_CTRL_DOWN) { |
| int timeout = wait_for_completion_timeout(&dev->qmi.qmi_comp, |
| HZ); |
| if (!timeout) |
| pr_err("slimbus QMI init timed out"); |
| } |
| |
| /* No need to vote if contorller is not in low power mode */ |
| if (cur_state == MSM_CTRL_DOWN || cur_state == MSM_CTRL_ASLEEP) { |
| ret = msm_slim_qmi_power_request(dev, true); |
| if (ret) { |
| pr_err("SLIM QMI power request failed:%d", ret); |
| return ret; |
| } |
| } |
| if (!dev->ver) { |
| dev->ver = readl_relaxed(dev->base); |
| /* Version info in 16 MSbits */ |
| dev->ver >>= 16; |
| } |
| ngd = dev->base + NGD_BASE(dev->ctrl.nr, dev->ver); |
| laddr = readl_relaxed(ngd + 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 == MSM_CTRL_AWAKE) { |
| pr_err("SLIM MDM restart: ADSP active framer:NO OP"); |
| return 0; |
| } |
| /* |
| * ADSP power collapse case, where HW wasn't reset. |
| * Reconnect BAM pipes if disconnected |
| */ |
| ngd_slim_setup_msg_path(dev); |
| return 0; |
| } else if (cur_state == MSM_CTRL_ASLEEP) { |
| pr_debug("ADSP P.C. CTRL state:%d NGD not enumerated:0x%x", |
| dev->state, laddr); |
| } else if (cur_state == MSM_CTRL_IDLE || cur_state == MSM_CTRL_AWAKE) { |
| /* |
| * external MDM SSR when only voice call is in progress. |
| * ADSP will reset slimbus HW. disconnect BAM pipes so that |
| * they can be connected after capability message is received. |
| * Set device state to ASLEEP to be synchronous with the HW |
| */ |
| pr_err("SLIM MDM restart: MDM active framer: reinit HW"); |
| dev->state = MSM_CTRL_ASLEEP; |
| msm_slim_disconnect_endp(dev, &dev->rx_msgq, |
| &dev->use_rx_msgqs); |
| msm_slim_disconnect_endp(dev, &dev->tx_msgq, |
| &dev->use_tx_msgqs); |
| } |
| /* ADSP SSR scenario, need to disconnect pipe before connecting */ |
| if (dev->use_rx_msgqs == MSM_MSGQ_DOWN) { |
| struct msm_slim_endp *endpoint = &dev->rx_msgq; |
| sps_disconnect(endpoint->sps); |
| sps_free_endpoint(endpoint->sps); |
| dev->use_rx_msgqs = MSM_MSGQ_RESET; |
| } |
| if (dev->use_tx_msgqs == MSM_MSGQ_DOWN) { |
| struct msm_slim_endp *endpoint = &dev->tx_msgq; |
| sps_disconnect(endpoint->sps); |
| sps_free_endpoint(endpoint->sps); |
| dev->use_tx_msgqs = MSM_MSGQ_RESET; |
| } |
| /* |
| * ADSP power collapse case (OR SSR), where HW was reset |
| * BAM programming will happen when capability message is received |
| */ |
| writel_relaxed(ngd_int, dev->base + NGD_INT_EN + |
| NGD_BASE(dev->ctrl.nr, dev->ver)); |
| /* |
| * Enable NGD. Configure NGD in register acc. mode until master |
| * announcement is received |
| */ |
| writel_relaxed(1, dev->base + NGD_BASE(dev->ctrl.nr, dev->ver)); |
| /* make sure NGD enabling goes through */ |
| mb(); |
| |
| timeout = wait_for_completion_timeout(&dev->reconf, HZ); |
| if (!timeout) { |
| pr_err("Failed to receive master capability"); |
| return -ETIMEDOUT; |
| } |
| if (cur_state == MSM_CTRL_DOWN) |
| complete(&dev->ctrl_up); |
| return 0; |
| } |
| |
| static int ngd_slim_enable(struct msm_slim_ctrl *dev, bool enable) |
| { |
| int ret = 0; |
| if (enable) { |
| ret = msm_slim_qmi_init(dev, false); |
| /* controller state should be in sync with framework state */ |
| if (!ret) { |
| ret = slim_ctrl_clk_pause(&dev->ctrl, false, |
| SLIM_CLK_UNSPECIFIED); |
| complete(&dev->qmi.qmi_comp); |
| /* |
| * Power-up won't be called if clock pause failed. |
| * This can happen if ADSP SSR happened when audio |
| * session is in progress. Framework will think that |
| * clock pause failed so no need to wakeup controller. |
| * Call power-up explicitly in that case, since slimbus |
| * HW needs to be powered-on to be in sync with |
| * framework state |
| */ |
| if (ret) |
| ngd_slim_power_up(dev); |
| if (!pm_runtime_enabled(dev->dev) || |
| !pm_runtime_suspended(dev->dev)) |
| ngd_slim_runtime_resume(dev->dev); |
| else |
| pm_runtime_resume(dev->dev); |
| pm_runtime_mark_last_busy(dev->dev); |
| pm_runtime_put(dev->dev); |
| } else |
| dev_err(dev->dev, "qmi init fail, ret:%d, state:%d", |
| ret, dev->state); |
| } else { |
| msm_slim_qmi_exit(dev); |
| } |
| |
| return ret; |
| } |
| |
| static int ngd_clk_pause_wakeup(struct slim_controller *ctrl) |
| { |
| struct msm_slim_ctrl *dev = slim_get_ctrldata(ctrl); |
| return ngd_slim_power_up(dev); |
| } |
| |
| static int ngd_slim_rx_msgq_thread(void *data) |
| { |
| struct msm_slim_ctrl *dev = (struct msm_slim_ctrl *)data; |
| struct completion *notify = &dev->rx_msgq_notify; |
| int ret = 0, index = 0; |
| u32 mc = 0; |
| u32 mt = 0; |
| u32 buffer[10]; |
| u8 msg_len = 0; |
| |
| while (!kthread_should_stop()) { |
| set_current_state(TASK_INTERRUPTIBLE); |
| ret = wait_for_completion_interruptible(notify); |
| if (ret) { |
| dev_err(dev->dev, "rx thread wait err:%d", ret); |
| continue; |
| } |
| /* 1 irq notification per message */ |
| if (dev->use_rx_msgqs != MSM_MSGQ_ENABLED) { |
| msm_slim_rx_dequeue(dev, (u8 *)buffer); |
| ngd_slim_rx(dev, (u8 *)buffer); |
| continue; |
| } |
| ret = msm_slim_rx_msgq_get(dev, buffer, index); |
| if (ret) { |
| dev_err(dev->dev, "rx_msgq_get() failed 0x%x\n", ret); |
| continue; |
| } |
| |
| /* Wait for complete message */ |
| if (index++ == 0) { |
| msg_len = *buffer & 0x1F; |
| mt = (buffer[0] >> 5) & 0x7; |
| mc = (buffer[0] >> 8) & 0xff; |
| dev_dbg(dev->dev, "MC: %x, MT: %x\n", mc, mt); |
| } |
| if ((index * 4) >= msg_len) { |
| index = 0; |
| ngd_slim_rx(dev, (u8 *)buffer); |
| } else |
| continue; |
| } |
| return 0; |
| } |
| |
| static void ngd_laddr_lookup(struct work_struct *work) |
| { |
| struct msm_slim_ctrl *dev = |
| container_of(work, struct msm_slim_ctrl, slave_notify); |
| struct slim_controller *ctrl = &dev->ctrl; |
| struct slim_device *sbdev; |
| struct list_head *pos, *next; |
| int i; |
| slim_framer_booted(ctrl); |
| mutex_lock(&ctrl->m_ctrl); |
| list_for_each_safe(pos, next, &ctrl->devs) { |
| int ret = 0; |
| sbdev = list_entry(pos, struct slim_device, dev_list); |
| mutex_unlock(&ctrl->m_ctrl); |
| for (i = 0; i < LADDR_RETRY; i++) { |
| ret = slim_get_logical_addr(sbdev, sbdev->e_addr, |
| 6, &sbdev->laddr); |
| if (!ret) |
| break; |
| else /* time for ADSP to assign LA */ |
| msleep(20); |
| } |
| mutex_lock(&ctrl->m_ctrl); |
| } |
| mutex_unlock(&ctrl->m_ctrl); |
| } |
| |
| static void ngd_adsp_down(struct work_struct *work) |
| { |
| struct msm_slim_qmi *qmi = |
| container_of(work, struct msm_slim_qmi, ssr_down); |
| struct msm_slim_ctrl *dev = |
| container_of(qmi, struct msm_slim_ctrl, qmi); |
| struct slim_controller *ctrl = &dev->ctrl; |
| struct slim_device *sbdev; |
| |
| ngd_slim_enable(dev, false); |
| /* disconnect BAM pipes */ |
| if (dev->use_rx_msgqs == MSM_MSGQ_ENABLED) |
| dev->use_rx_msgqs = MSM_MSGQ_DOWN; |
| if (dev->use_tx_msgqs == MSM_MSGQ_ENABLED) |
| dev->use_tx_msgqs = MSM_MSGQ_DOWN; |
| msm_slim_sps_exit(dev, false); |
| /* device up should be called again after SSR */ |
| list_for_each_entry(sbdev, &ctrl->devs, dev_list) |
| slim_report_absent(sbdev); |
| pr_info("SLIM ADSP SSR (DOWN) done"); |
| } |
| |
| static void ngd_adsp_up(struct work_struct *work) |
| { |
| struct msm_slim_qmi *qmi = |
| container_of(work, struct msm_slim_qmi, ssr_up); |
| struct msm_slim_ctrl *dev = |
| container_of(qmi, struct msm_slim_ctrl, qmi); |
| ngd_slim_enable(dev, true); |
| } |
| |
| static int __devinit ngd_slim_probe(struct platform_device *pdev) |
| { |
| struct msm_slim_ctrl *dev; |
| int ret; |
| struct resource *bam_mem; |
| struct resource *slim_mem; |
| struct resource *irq, *bam_irq; |
| enum apr_subsys_state q6_state; |
| bool rxreg_access = false; |
| bool slim_mdm = false; |
| |
| q6_state = apr_get_q6_state(); |
| if (q6_state == APR_SUBSYS_DOWN) { |
| dev_dbg(&pdev->dev, "defering %s, adsp_state %d\n", __func__, |
| q6_state); |
| return -EPROBE_DEFER; |
| } else |
| dev_dbg(&pdev->dev, "adsp is ready\n"); |
| |
| slim_mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| "slimbus_physical"); |
| if (!slim_mem) { |
| dev_err(&pdev->dev, "no slimbus physical memory resource\n"); |
| return -ENODEV; |
| } |
| bam_mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, |
| "slimbus_bam_physical"); |
| if (!bam_mem) { |
| dev_err(&pdev->dev, "no slimbus BAM memory resource\n"); |
| return -ENODEV; |
| } |
| irq = platform_get_resource_byname(pdev, IORESOURCE_IRQ, |
| "slimbus_irq"); |
| if (!irq) { |
| dev_err(&pdev->dev, "no slimbus IRQ resource\n"); |
| return -ENODEV; |
| } |
| bam_irq = platform_get_resource_byname(pdev, IORESOURCE_IRQ, |
| "slimbus_bam_irq"); |
| if (!bam_irq) { |
| dev_err(&pdev->dev, "no slimbus BAM IRQ resource\n"); |
| return -ENODEV; |
| } |
| |
| dev = kzalloc(sizeof(struct msm_slim_ctrl), GFP_KERNEL); |
| if (IS_ERR_OR_NULL(dev)) { |
| dev_err(&pdev->dev, "no memory for MSM slimbus controller\n"); |
| return PTR_ERR(dev); |
| } |
| dev->dev = &pdev->dev; |
| platform_set_drvdata(pdev, dev); |
| slim_set_ctrldata(&dev->ctrl, dev); |
| dev->base = ioremap(slim_mem->start, resource_size(slim_mem)); |
| if (!dev->base) { |
| dev_err(&pdev->dev, "IOremap failed\n"); |
| ret = -ENOMEM; |
| goto err_ioremap_failed; |
| } |
| dev->bam.base = ioremap(bam_mem->start, resource_size(bam_mem)); |
| if (!dev->bam.base) { |
| dev_err(&pdev->dev, "BAM IOremap failed\n"); |
| ret = -ENOMEM; |
| goto err_ioremap_bam_failed; |
| } |
| if (pdev->dev.of_node) { |
| |
| ret = of_property_read_u32(pdev->dev.of_node, "cell-index", |
| &dev->ctrl.nr); |
| if (ret) { |
| dev_err(&pdev->dev, "Cell index not specified:%d", ret); |
| goto err_ctrl_failed; |
| } |
| rxreg_access = of_property_read_bool(pdev->dev.of_node, |
| "qcom,rxreg-access"); |
| of_property_read_u32(pdev->dev.of_node, "qcom,apps-ch-pipes", |
| &dev->pdata.apps_pipes); |
| of_property_read_u32(pdev->dev.of_node, "qcom,ea-pc", |
| &dev->pdata.eapc); |
| slim_mdm = of_property_read_bool(pdev->dev.of_node, |
| "qcom,slim-mdm"); |
| } else { |
| dev->ctrl.nr = pdev->id; |
| } |
| /* |
| * Keep PGD's logical address as manager's. Query it when first data |
| * channel request comes in |
| */ |
| dev->pgdla = SLIM_LA_MGR; |
| dev->ctrl.nchans = MSM_SLIM_NCHANS; |
| dev->ctrl.nports = MSM_SLIM_NPORTS; |
| dev->framer.rootfreq = SLIM_ROOT_FREQ >> 3; |
| dev->framer.superfreq = |
| dev->framer.rootfreq / SLIM_CL_PER_SUPERFRAME_DIV8; |
| dev->ctrl.a_framer = &dev->framer; |
| dev->ctrl.clkgear = SLIM_MAX_CLK_GEAR; |
| dev->ctrl.set_laddr = ngd_set_laddr; |
| dev->ctrl.get_laddr = ngd_get_laddr; |
| dev->ctrl.allocbw = ngd_allocbw; |
| dev->ctrl.xfer_msg = ngd_xfer_msg; |
| dev->ctrl.wakeup = ngd_clk_pause_wakeup; |
| dev->ctrl.alloc_port = msm_alloc_port; |
| dev->ctrl.dealloc_port = msm_dealloc_port; |
| dev->ctrl.port_xfer = msm_slim_port_xfer; |
| dev->ctrl.port_xfer_status = msm_slim_port_xfer_status; |
| dev->bam_mem = bam_mem; |
| |
| init_completion(&dev->reconf); |
| init_completion(&dev->ctrl_up); |
| mutex_init(&dev->tx_lock); |
| spin_lock_init(&dev->rx_lock); |
| dev->ee = 1; |
| dev->irq = irq->start; |
| dev->bam.irq = bam_irq->start; |
| |
| if (rxreg_access) |
| dev->use_rx_msgqs = MSM_MSGQ_DISABLED; |
| else |
| dev->use_rx_msgqs = MSM_MSGQ_RESET; |
| |
| /* Enable TX message queues by default as recommended by HW */ |
| dev->use_tx_msgqs = MSM_MSGQ_RESET; |
| |
| init_completion(&dev->rx_msgq_notify); |
| |
| /* Register with framework */ |
| ret = slim_add_numbered_controller(&dev->ctrl); |
| if (ret) { |
| dev_err(dev->dev, "error adding controller\n"); |
| goto err_ctrl_failed; |
| } |
| |
| dev->ctrl.dev.parent = &pdev->dev; |
| dev->ctrl.dev.of_node = pdev->dev.of_node; |
| dev->state = MSM_CTRL_DOWN; |
| |
| ret = request_irq(dev->irq, ngd_slim_interrupt, |
| IRQF_TRIGGER_HIGH, "ngd_slim_irq", dev); |
| |
| if (ret) { |
| dev_err(&pdev->dev, "request IRQ failed\n"); |
| goto err_request_irq_failed; |
| } |
| |
| init_completion(&dev->qmi.qmi_comp); |
| pm_runtime_use_autosuspend(dev->dev); |
| pm_runtime_set_autosuspend_delay(dev->dev, MSM_SLIM_AUTOSUSPEND); |
| pm_runtime_set_suspended(dev->dev); |
| pm_runtime_enable(dev->dev); |
| |
| if (slim_mdm) { |
| dev->mdm.nb.notifier_call = mdm_ssr_notify_cb; |
| dev->mdm.ssr = subsys_notif_register_notifier("external_modem", |
| &dev->mdm.nb); |
| if (IS_ERR_OR_NULL(dev->mdm.ssr)) |
| dev_err(dev->dev, |
| "subsys_notif_register_notifier failed %p", |
| dev->mdm.ssr); |
| } |
| |
| INIT_WORK(&dev->slave_notify, ngd_laddr_lookup); |
| INIT_WORK(&dev->qmi.ssr_down, ngd_adsp_down); |
| INIT_WORK(&dev->qmi.ssr_up, ngd_adsp_up); |
| dev->qmi.nb.notifier_call = ngd_qmi_available; |
| pm_runtime_get_noresume(dev->dev); |
| ret = qmi_svc_event_notifier_register(SLIMBUS_QMI_SVC_ID, |
| SLIMBUS_QMI_SVC_V1, |
| SLIMBUS_QMI_INS_ID, &dev->qmi.nb); |
| if (ret) { |
| pr_err("Slimbus QMI service registration failed:%d", ret); |
| goto qmi_register_failed; |
| } |
| |
| |
| /* Fire up the Rx message queue thread */ |
| dev->rx_msgq_thread = kthread_run(ngd_slim_rx_msgq_thread, dev, |
| NGD_SLIM_NAME "_ngd_msgq_thread"); |
| if (IS_ERR(dev->rx_msgq_thread)) { |
| ret = PTR_ERR(dev->rx_msgq_thread); |
| dev_err(dev->dev, "Failed to start Rx message queue thread\n"); |
| goto err_thread_create_failed; |
| } |
| |
| if (pdev->dev.of_node) |
| of_register_slim_devices(&dev->ctrl); |
| |
| /* Add devices registered with board-info now that controller is up */ |
| slim_ctrl_add_boarddevs(&dev->ctrl); |
| |
| dev_dbg(dev->dev, "NGD SB controller is up!\n"); |
| return 0; |
| |
| err_thread_create_failed: |
| qmi_svc_event_notifier_unregister(SLIMBUS_QMI_SVC_ID, |
| SLIMBUS_QMI_SVC_V1, |
| SLIMBUS_QMI_INS_ID, &dev->qmi.nb); |
| qmi_register_failed: |
| free_irq(dev->irq, dev); |
| err_request_irq_failed: |
| slim_del_controller(&dev->ctrl); |
| err_ctrl_failed: |
| iounmap(dev->bam.base); |
| err_ioremap_bam_failed: |
| iounmap(dev->base); |
| err_ioremap_failed: |
| kfree(dev); |
| return ret; |
| } |
| |
| static int __devexit ngd_slim_remove(struct platform_device *pdev) |
| { |
| struct msm_slim_ctrl *dev = platform_get_drvdata(pdev); |
| ngd_slim_enable(dev, false); |
| qmi_svc_event_notifier_unregister(SLIMBUS_QMI_SVC_ID, |
| SLIMBUS_QMI_SVC_V1, |
| SLIMBUS_QMI_INS_ID, &dev->qmi.nb); |
| pm_runtime_disable(&pdev->dev); |
| if (!IS_ERR_OR_NULL(dev->mdm.ssr)) |
| subsys_notif_unregister_notifier(dev->mdm.ssr, &dev->mdm.nb); |
| free_irq(dev->irq, dev); |
| slim_del_controller(&dev->ctrl); |
| kthread_stop(dev->rx_msgq_thread); |
| iounmap(dev->bam.base); |
| iounmap(dev->base); |
| kfree(dev); |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM_RUNTIME |
| static int ngd_slim_runtime_idle(struct device *device) |
| { |
| struct platform_device *pdev = to_platform_device(device); |
| struct msm_slim_ctrl *dev = platform_get_drvdata(pdev); |
| if (dev->state == MSM_CTRL_AWAKE) |
| dev->state = MSM_CTRL_IDLE; |
| dev_dbg(device, "pm_runtime: idle...\n"); |
| pm_request_autosuspend(device); |
| return -EAGAIN; |
| } |
| #endif |
| |
| /* |
| * If PM_RUNTIME is not defined, these 2 functions become helper |
| * functions to be called from system suspend/resume. So they are not |
| * inside ifdef CONFIG_PM_RUNTIME |
| */ |
| static int ngd_slim_runtime_resume(struct device *device) |
| { |
| struct platform_device *pdev = to_platform_device(device); |
| struct msm_slim_ctrl *dev = platform_get_drvdata(pdev); |
| int ret = 0; |
| if (dev->state >= MSM_CTRL_ASLEEP) |
| ret = slim_ctrl_clk_pause(&dev->ctrl, true, 0); |
| if (ret) { |
| /* Did SSR cause this clock pause failure */ |
| if (dev->state != MSM_CTRL_DOWN) |
| dev->state = MSM_CTRL_ASLEEP; |
| else |
| dev_err(device, "HW wakeup attempt during SSR"); |
| } else { |
| dev->state = MSM_CTRL_AWAKE; |
| } |
| return ret; |
| } |
| |
| #ifdef CONFIG_PM_SLEEP |
| static int ngd_slim_runtime_suspend(struct device *device) |
| { |
| struct platform_device *pdev = to_platform_device(device); |
| struct msm_slim_ctrl *dev = platform_get_drvdata(pdev); |
| int ret = 0; |
| ret = slim_ctrl_clk_pause(&dev->ctrl, false, SLIM_CLK_UNSPECIFIED); |
| if (ret) { |
| if (ret != -EBUSY) |
| dev_err(device, "clk pause not entered:%d", ret); |
| dev->state = MSM_CTRL_AWAKE; |
| } else { |
| dev->state = MSM_CTRL_ASLEEP; |
| } |
| return ret; |
| } |
| |
| static int ngd_slim_suspend(struct device *dev) |
| { |
| int ret = -EBUSY; |
| struct platform_device *pdev = to_platform_device(dev); |
| struct msm_slim_ctrl *cdev = platform_get_drvdata(pdev); |
| if (!pm_runtime_enabled(dev) || |
| (!pm_runtime_suspended(dev) && |
| cdev->state == MSM_CTRL_IDLE)) { |
| dev_dbg(dev, "system suspend"); |
| ret = ngd_slim_runtime_suspend(dev); |
| /* |
| * If runtime-PM still thinks it's active, then make sure its |
| * status is in sync with HW status. |
| * Since this suspend calls QMI api, it results in holding a |
| * wakelock. That results in failure of first suspend. |
| * Subsequent suspend should not call low-power transition |
| * again since the HW is already in suspended state. |
| */ |
| if (!ret) { |
| pm_runtime_disable(dev); |
| pm_runtime_set_suspended(dev); |
| pm_runtime_enable(dev); |
| } |
| } |
| if (ret == -EBUSY) { |
| /* |
| * There is a possibility that some audio stream is active |
| * during suspend. We dont want to return suspend failure in |
| * that case so that display and relevant components can still |
| * go to suspend. |
| * If there is some other error, then it should be passed-on |
| * to system level suspend |
| */ |
| ret = 0; |
| } |
| return ret; |
| } |
| |
| static int ngd_slim_resume(struct device *dev) |
| { |
| /* |
| * Rely on runtime-PM to call resume in case it is enabled. |
| * Even if it's not enabled, rely on 1st client transaction to do |
| * clock/power on |
| */ |
| return 0; |
| } |
| #endif /* CONFIG_PM_SLEEP */ |
| |
| static const struct dev_pm_ops ngd_slim_dev_pm_ops = { |
| SET_SYSTEM_SLEEP_PM_OPS( |
| ngd_slim_suspend, |
| ngd_slim_resume |
| ) |
| SET_RUNTIME_PM_OPS( |
| ngd_slim_runtime_suspend, |
| ngd_slim_runtime_resume, |
| ngd_slim_runtime_idle |
| ) |
| }; |
| |
| static struct of_device_id ngd_slim_dt_match[] = { |
| { |
| .compatible = "qcom,slim-ngd", |
| }, |
| {} |
| }; |
| |
| static struct platform_driver ngd_slim_driver = { |
| .probe = ngd_slim_probe, |
| .remove = ngd_slim_remove, |
| .driver = { |
| .name = NGD_SLIM_NAME, |
| .owner = THIS_MODULE, |
| .pm = &ngd_slim_dev_pm_ops, |
| .of_match_table = ngd_slim_dt_match, |
| }, |
| }; |
| |
| static int ngd_slim_init(void) |
| { |
| return platform_driver_register(&ngd_slim_driver); |
| } |
| late_initcall(ngd_slim_init); |
| |
| static void ngd_slim_exit(void) |
| { |
| platform_driver_unregister(&ngd_slim_driver); |
| } |
| module_exit(ngd_slim_exit); |
| |
| MODULE_LICENSE("GPL v2"); |
| MODULE_DESCRIPTION("MSM Slimbus controller"); |
| MODULE_ALIAS("platform:msm-slim-ngd"); |