diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath11k/ahb.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath11k/ahb.c | 122 |
1 files changed, 121 insertions, 1 deletions
diff --git a/drivers/net/wireless/ath/ath11k/ahb.c b/drivers/net/wireless/ath/ath11k/ahb.c index 2bf709b0b12a..84bf679da9eb 100644 --- a/drivers/net/wireless/ath/ath11k/ahb.c +++ b/drivers/net/wireless/ath/ath11k/ahb.c @@ -16,6 +16,8 @@ #include "hif.h" #include <linux/remoteproc.h> #include "pcic.h" +#include <linux/soc/qcom/smem.h> +#include <linux/soc/qcom/smem_state.h> static const struct of_device_id ath11k_ahb_of_match[] = { /* TODO: Should we change the compatible string to something similar @@ -687,6 +689,84 @@ static int ath11k_ahb_map_service_to_pipe(struct ath11k_base *ab, u16 service_id return 0; } +static int ath11k_ahb_hif_suspend(struct ath11k_base *ab) +{ + struct ath11k_ahb *ab_ahb = ath11k_ahb_priv(ab); + u32 wake_irq; + u32 value = 0; + int ret; + + if (!device_may_wakeup(ab->dev)) + return -EPERM; + + wake_irq = ab->irq_num[ATH11K_PCI_IRQ_CE0_OFFSET + ATH11K_PCI_CE_WAKE_IRQ]; + + ret = enable_irq_wake(wake_irq); + if (ret) { + ath11k_err(ab, "failed to enable wakeup irq :%d\n", ret); + return ret; + } + + value = u32_encode_bits(ab_ahb->smp2p_info.seq_no++, + ATH11K_AHB_SMP2P_SMEM_SEQ_NO); + value |= u32_encode_bits(ATH11K_AHB_POWER_SAVE_ENTER, + ATH11K_AHB_SMP2P_SMEM_MSG); + + ret = qcom_smem_state_update_bits(ab_ahb->smp2p_info.smem_state, + ATH11K_AHB_SMP2P_SMEM_VALUE_MASK, value); + if (ret) { + ath11k_err(ab, "failed to send smp2p power save enter cmd :%d\n", ret); + return ret; + } + + ath11k_dbg(ab, ATH11K_DBG_AHB, "ahb device suspended\n"); + + return ret; +} + +static int ath11k_ahb_hif_resume(struct ath11k_base *ab) +{ + struct ath11k_ahb *ab_ahb = ath11k_ahb_priv(ab); + u32 wake_irq; + u32 value = 0; + int ret; + + if (!device_may_wakeup(ab->dev)) + return -EPERM; + + wake_irq = ab->irq_num[ATH11K_PCI_IRQ_CE0_OFFSET + ATH11K_PCI_CE_WAKE_IRQ]; + + ret = disable_irq_wake(wake_irq); + if (ret) { + ath11k_err(ab, "failed to disable wakeup irq: %d\n", ret); + return ret; + } + + reinit_completion(&ab->wow.wakeup_completed); + + value = u32_encode_bits(ab_ahb->smp2p_info.seq_no++, + ATH11K_AHB_SMP2P_SMEM_SEQ_NO); + value |= u32_encode_bits(ATH11K_AHB_POWER_SAVE_EXIT, + ATH11K_AHB_SMP2P_SMEM_MSG); + + ret = qcom_smem_state_update_bits(ab_ahb->smp2p_info.smem_state, + ATH11K_AHB_SMP2P_SMEM_VALUE_MASK, value); + if (ret) { + ath11k_err(ab, "failed to send smp2p power save enter cmd :%d\n", ret); + return ret; + } + + ret = wait_for_completion_timeout(&ab->wow.wakeup_completed, 3 * HZ); + if (ret == 0) { + ath11k_warn(ab, "timed out while waiting for wow wakeup completion\n"); + return -ETIMEDOUT; + } + + ath11k_dbg(ab, ATH11K_DBG_AHB, "ahb device resumed\n"); + + return 0; +} + static const struct ath11k_hif_ops ath11k_ahb_hif_ops_ipq8074 = { .start = ath11k_ahb_start, .stop = ath11k_ahb_stop, @@ -713,6 +793,10 @@ static const struct ath11k_hif_ops ath11k_ahb_hif_ops_wcn6750 = { .map_service_to_pipe = ath11k_pcic_map_service_to_pipe, .power_down = ath11k_ahb_power_down, .power_up = ath11k_ahb_power_up, + .suspend = ath11k_ahb_hif_suspend, + .resume = ath11k_ahb_hif_resume, + .ce_irq_enable = ath11k_pci_enable_ce_irqs_except_wake_irq, + .ce_irq_disable = ath11k_pci_disable_ce_irqs_except_wake_irq, }; static int ath11k_core_get_rproc(struct ath11k_base *ab) @@ -787,6 +871,34 @@ static int ath11k_ahb_setup_msi_resources(struct ath11k_base *ab) return 0; } +static int ath11k_ahb_setup_smp2p_handle(struct ath11k_base *ab) +{ + struct ath11k_ahb *ab_ahb = ath11k_ahb_priv(ab); + + if (!ab->hw_params.smp2p_wow_exit) + return 0; + + ab_ahb->smp2p_info.smem_state = qcom_smem_state_get(ab->dev, "wlan-smp2p-out", + &ab_ahb->smp2p_info.smem_bit); + if (IS_ERR(ab_ahb->smp2p_info.smem_state)) { + ath11k_err(ab, "failed to fetch smem state: %ld\n", + PTR_ERR(ab_ahb->smp2p_info.smem_state)); + return PTR_ERR(ab_ahb->smp2p_info.smem_state); + } + + return 0; +} + +static void ath11k_ahb_release_smp2p_handle(struct ath11k_base *ab) +{ + struct ath11k_ahb *ab_ahb = ath11k_ahb_priv(ab); + + if (!ab->hw_params.smp2p_wow_exit) + return; + + qcom_smem_state_put(ab_ahb->smp2p_info.smem_state); +} + static int ath11k_ahb_setup_resources(struct ath11k_base *ab) { struct platform_device *pdev = ab->pdev; @@ -1042,10 +1154,14 @@ static int ath11k_ahb_probe(struct platform_device *pdev) if (ret) goto err_core_free; - ret = ath11k_hal_srng_init(ab); + ret = ath11k_ahb_setup_smp2p_handle(ab); if (ret) goto err_fw_deinit; + ret = ath11k_hal_srng_init(ab); + if (ret) + goto err_release_smp2p_handle; + ret = ath11k_ce_alloc_pipes(ab); if (ret) { ath11k_err(ab, "failed to allocate ce pipes: %d\n", ret); @@ -1082,6 +1198,9 @@ err_ce_free: err_hal_srng_deinit: ath11k_hal_srng_deinit(ab); +err_release_smp2p_handle: + ath11k_ahb_release_smp2p_handle(ab); + err_fw_deinit: ath11k_ahb_fw_resource_deinit(ab); @@ -1114,6 +1233,7 @@ static void ath11k_ahb_free_resources(struct ath11k_base *ab) ath11k_ahb_free_irq(ab); ath11k_hal_srng_deinit(ab); + ath11k_ahb_release_smp2p_handle(ab); ath11k_ahb_fw_resource_deinit(ab); ath11k_ce_free_pipes(ab); ath11k_core_free(ab); |