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brcmfmac: send mailbox interrupt twice for specific hardware device

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For PCIE wireless device with core revision less than 14, device may miss
PCIE to System Backplane Interrupt via PCIEtoSBMailbox. So add sending
mail box interrupt twice as a hardware workaround.

Signed-off-by: Wright Feng <wright.feng@cypress.com>
Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Wright Feng 2019-04-25 07:05:46 +00:00 committed by Kalle Valo
parent d0e61a0f7c
commit 99d94ef367
1 changed files with 5 additions and 1 deletions
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6
drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
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@ -698,7 +698,11 @@ brcmf_pcie_send_mb_data(struct brcmf_pciedev_info *devinfo, u32 htod_mb_data)
brcmf_pcie_write_tcm32(devinfo, addr, htod_mb_data);
pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
/* Send mailbox interrupt twice as a hardware workaround */
core = brcmf_chip_get_core(devinfo->ci, BCMA_CORE_PCIE2);
if (core->rev <= 13)
pci_write_config_dword(devinfo->pdev, BRCMF_PCIE_REG_SBMBX, 1);
return 0;
}