diff options
Diffstat (limited to 'drivers/net/wwan/t7xx/t7xx_hif_cldma.c')
| -rw-r--r-- | drivers/net/wwan/t7xx/t7xx_hif_cldma.c | 123 |
1 files changed, 122 insertions, 1 deletions
diff --git a/drivers/net/wwan/t7xx/t7xx_hif_cldma.c b/drivers/net/wwan/t7xx/t7xx_hif_cldma.c index 7a8c09f7435a..cbe5ea4495e0 100644 --- a/drivers/net/wwan/t7xx/t7xx_hif_cldma.c +++ b/drivers/net/wwan/t7xx/t7xx_hif_cldma.c @@ -1076,6 +1076,120 @@ int t7xx_cldma_alloc(enum cldma_id hif_id, struct t7xx_pci_dev *t7xx_dev) return 0; } +static void t7xx_cldma_resume_early(struct t7xx_pci_dev *t7xx_dev, void *entity_param) +{ + struct cldma_ctrl *md_ctrl = entity_param; + struct t7xx_cldma_hw *hw_info; + unsigned long flags; + int qno_t; + + hw_info = &md_ctrl->hw_info; + + spin_lock_irqsave(&md_ctrl->cldma_lock, flags); + t7xx_cldma_hw_restore(hw_info); + for (qno_t = 0; qno_t < CLDMA_TXQ_NUM; qno_t++) { + t7xx_cldma_hw_set_start_addr(hw_info, qno_t, md_ctrl->txq[qno_t].tx_next->gpd_addr, + MTK_TX); + t7xx_cldma_hw_set_start_addr(hw_info, qno_t, md_ctrl->rxq[qno_t].tr_done->gpd_addr, + MTK_RX); + } + t7xx_cldma_enable_irq(md_ctrl); + t7xx_cldma_hw_start_queue(hw_info, CLDMA_ALL_Q, MTK_RX); + md_ctrl->rxq_active |= TXRX_STATUS_BITMASK; + t7xx_cldma_hw_irq_en_eq(hw_info, CLDMA_ALL_Q, MTK_RX); + t7xx_cldma_hw_irq_en_txrx(hw_info, CLDMA_ALL_Q, MTK_RX); + spin_unlock_irqrestore(&md_ctrl->cldma_lock, flags); +} + +static int t7xx_cldma_resume(struct t7xx_pci_dev *t7xx_dev, void *entity_param) +{ + struct cldma_ctrl *md_ctrl = entity_param; + unsigned long flags; + + spin_lock_irqsave(&md_ctrl->cldma_lock, flags); + md_ctrl->txq_active |= TXRX_STATUS_BITMASK; + t7xx_cldma_hw_irq_en_txrx(&md_ctrl->hw_info, CLDMA_ALL_Q, MTK_TX); + t7xx_cldma_hw_irq_en_eq(&md_ctrl->hw_info, CLDMA_ALL_Q, MTK_TX); + spin_unlock_irqrestore(&md_ctrl->cldma_lock, flags); + + if (md_ctrl->hif_id == CLDMA_ID_MD) + t7xx_mhccif_mask_clr(t7xx_dev, D2H_SW_INT_MASK); + + return 0; +} + +static void t7xx_cldma_suspend_late(struct t7xx_pci_dev *t7xx_dev, void *entity_param) +{ + struct cldma_ctrl *md_ctrl = entity_param; + struct t7xx_cldma_hw *hw_info; + unsigned long flags; + + hw_info = &md_ctrl->hw_info; + + spin_lock_irqsave(&md_ctrl->cldma_lock, flags); + t7xx_cldma_hw_irq_dis_eq(hw_info, CLDMA_ALL_Q, MTK_RX); + t7xx_cldma_hw_irq_dis_txrx(hw_info, CLDMA_ALL_Q, MTK_RX); + md_ctrl->rxq_active &= ~TXRX_STATUS_BITMASK; + t7xx_cldma_hw_stop_all_qs(hw_info, MTK_RX); + t7xx_cldma_clear_ip_busy(hw_info); + t7xx_cldma_disable_irq(md_ctrl); + spin_unlock_irqrestore(&md_ctrl->cldma_lock, flags); +} + +static int t7xx_cldma_suspend(struct t7xx_pci_dev *t7xx_dev, void *entity_param) +{ + struct cldma_ctrl *md_ctrl = entity_param; + struct t7xx_cldma_hw *hw_info; + unsigned long flags; + + if (md_ctrl->hif_id == CLDMA_ID_MD) + t7xx_mhccif_mask_set(t7xx_dev, D2H_SW_INT_MASK); + + hw_info = &md_ctrl->hw_info; + + spin_lock_irqsave(&md_ctrl->cldma_lock, flags); + t7xx_cldma_hw_irq_dis_eq(hw_info, CLDMA_ALL_Q, MTK_TX); + t7xx_cldma_hw_irq_dis_txrx(hw_info, CLDMA_ALL_Q, MTK_TX); + md_ctrl->txq_active &= ~TXRX_STATUS_BITMASK; + t7xx_cldma_hw_stop_all_qs(hw_info, MTK_TX); + md_ctrl->txq_started = 0; + spin_unlock_irqrestore(&md_ctrl->cldma_lock, flags); + + return 0; +} + +static int t7xx_cldma_pm_init(struct cldma_ctrl *md_ctrl) +{ + md_ctrl->pm_entity = kzalloc(sizeof(*md_ctrl->pm_entity), GFP_KERNEL); + if (!md_ctrl->pm_entity) + return -ENOMEM; + + md_ctrl->pm_entity->entity_param = md_ctrl; + + if (md_ctrl->hif_id == CLDMA_ID_MD) + md_ctrl->pm_entity->id = PM_ENTITY_ID_CTRL1; + else + md_ctrl->pm_entity->id = PM_ENTITY_ID_CTRL2; + + md_ctrl->pm_entity->suspend = t7xx_cldma_suspend; + md_ctrl->pm_entity->suspend_late = t7xx_cldma_suspend_late; + md_ctrl->pm_entity->resume = t7xx_cldma_resume; + md_ctrl->pm_entity->resume_early = t7xx_cldma_resume_early; + + return t7xx_pci_pm_entity_register(md_ctrl->t7xx_dev, md_ctrl->pm_entity); +} + +static int t7xx_cldma_pm_uninit(struct cldma_ctrl *md_ctrl) +{ + if (!md_ctrl->pm_entity) + return -EINVAL; + + t7xx_pci_pm_entity_unregister(md_ctrl->t7xx_dev, md_ctrl->pm_entity); + kfree(md_ctrl->pm_entity); + md_ctrl->pm_entity = NULL; + return 0; +} + void t7xx_cldma_hif_hw_init(struct cldma_ctrl *md_ctrl) { struct t7xx_cldma_hw *hw_info = &md_ctrl->hw_info; @@ -1126,6 +1240,7 @@ static void t7xx_cldma_destroy_wqs(struct cldma_ctrl *md_ctrl) * t7xx_cldma_init() - Initialize CLDMA. * @md_ctrl: CLDMA context structure. * + * Allocate and initialize device power management entity. * Initialize HIF TX/RX queue structure. * Register CLDMA callback ISR with PCIe driver. * @@ -1136,12 +1251,16 @@ static void t7xx_cldma_destroy_wqs(struct cldma_ctrl *md_ctrl) int t7xx_cldma_init(struct cldma_ctrl *md_ctrl) { struct t7xx_cldma_hw *hw_info = &md_ctrl->hw_info; - int i; + int ret, i; md_ctrl->txq_active = 0; md_ctrl->rxq_active = 0; md_ctrl->is_late_init = false; + ret = t7xx_cldma_pm_init(md_ctrl); + if (ret) + return ret; + spin_lock_init(&md_ctrl->cldma_lock); for (i = 0; i < CLDMA_TXQ_NUM; i++) { @@ -1176,6 +1295,7 @@ int t7xx_cldma_init(struct cldma_ctrl *md_ctrl) err_workqueue: t7xx_cldma_destroy_wqs(md_ctrl); + t7xx_cldma_pm_uninit(md_ctrl); return -ENOMEM; } @@ -1190,4 +1310,5 @@ void t7xx_cldma_exit(struct cldma_ctrl *md_ctrl) t7xx_cldma_stop(md_ctrl); t7xx_cldma_late_release(md_ctrl); t7xx_cldma_destroy_wqs(md_ctrl); + t7xx_cldma_pm_uninit(md_ctrl); } |