Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 9ef77fbe authored by Wright Feng's avatar Wright Feng Committed by Kalle Valo
Browse files

brcmfmac: send mailbox interrupt twice for specific hardware device 



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: default avatarWright Feng <wright.feng@cypress.com>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent a0656c6e

drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c

+6 −1
Original line number Diff line number Diff line
@@ -675,6 +675,7 @@ static int 
brcmf_pcie_send_mb_data(struct brcmf_pciedev_info *devinfo, u32 htod_mb_data)

{

	struct brcmf_pcie_shared_info *shared;

	struct brcmf_core *core;

	u32 addr;

	u32 cur_htod_mb_data;

	u32 i;
@@ -698,6 +699,10 @@ 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);



	/* 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;