brcmfmac: update core reset and disable routines.
The original core reset and disable routines do not work always
on running system. These routines were updated to properly reset
a core. When module is unloaded the device is put into download
state where all necessary cores have been reset. This will make
sure the device is in idle mode after module unload.
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
index 4f936c6..1905789 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
@@ -2263,8 +2263,6 @@
w_sdreg32(bus, local_hostintmask,
offsetof(struct sdpcmd_regs, intstatus));
- /* Turn off the backplane clock (only) */
- brcmf_sdio_clkctl(bus, CLK_SDONLY, false);
sdio_release_host(bus->sdiodev->func[1]);
/* Clear the data packet queues */
@@ -4085,6 +4083,12 @@
if (bus->ci) {
sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdio_clkctl(bus, CLK_AVAIL, false);
+ /* Leave the device in state where it is 'quiet'. This
+ * is done by putting it in download_state which
+ * essentially resets all necessary cores
+ */
+ msleep(20);
+ brcmf_sdio_download_state(bus, true);
brcmf_sdio_clkctl(bus, CLK_NONE, false);
sdio_release_host(bus->sdiodev->func[1]);
brcmf_sdio_chip_detach(&bus->ci);