40 lines
1.5 KiB
Diff
40 lines
1.5 KiB
Diff
From 9ef77fbedad9ea8895cd5d7fb7aee16071f527dc Mon Sep 17 00:00:00 2001
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From: Wright Feng <Wright.Feng@cypress.com>
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Date: Fri, 26 Apr 2019 03:12:32 +0000
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Subject: [PATCH] brcmfmac: send mailbox interrupt twice for specific hardware
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device
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For PCIE wireless device with core revision less than 14, device may miss
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PCIE to System Backplane Interrupt via PCIEtoSBMailbox. So add sending
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mail box interrupt twice as a hardware workaround.
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Signed-off-by: Wright Feng <wright.feng@cypress.com>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
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@@ -671,6 +671,7 @@ static int
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brcmf_pcie_send_mb_data(struct brcmf_pciedev_info *devinfo, u32 htod_mb_data)
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{
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struct brcmf_pcie_shared_info *shared;
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+ struct brcmf_core *core;
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u32 addr;
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u32 cur_htod_mb_data;
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u32 i;
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@@ -694,7 +695,11 @@ brcmf_pcie_send_mb_data(struct brcmf_pci
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brcmf_pcie_write_tcm32(devinfo, addr, htod_mb_data);
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pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
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- pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
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+
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+ /* Send mailbox interrupt twice as a hardware workaround */
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+ core = brcmf_chip_get_core(devinfo->ci, BCMA_CORE_PCIE2);
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+ if (core->rev <= 13)
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+ pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
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return 0;
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}
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