Commit 86761fcb authored by Franky Lin's avatar Franky Lin Committed by John W. Linville
Browse files

brcmfmac: remove obsolete sdio bus sleep mechanism



Remove sdio bus sleep mechanism since it is never invoked.
Reviewed-by: default avatarHante Meuleman <meuleman@broadcom.com>
Reviewed-by: default avatarPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: default avatarArend van Spriel <arend@broadcom.com>
Signed-off-by: default avatarFranky Lin <frankyl@broadcom.com>
Signed-off-by: default avatarArend van Spriel <arend@broadcom.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 8514fd02
......@@ -549,7 +549,6 @@ struct brcmf_sdio {
s32 idleclock; /* How to set bus driver when idle */
s32 sd_rxchain;
bool use_rxchain; /* If brcmf should use PKT chains */
bool sleeping; /* Is SDIO bus sleeping? */
bool rxflow_mode; /* Rx flow control mode */
bool rxflow; /* Is rx flow control on */
bool alp_only; /* Don't use HT clock (ALP only) */
......@@ -853,81 +852,6 @@ static int brcmf_sdbrcm_clkctl(struct brcmf_sdio *bus, uint target, bool pendok)
return 0;
}
static int brcmf_sdbrcm_bussleep(struct brcmf_sdio *bus, bool sleep)
{
int ret;
brcmf_dbg(INFO, "request %s (currently %s)\n",
sleep ? "SLEEP" : "WAKE",
bus->sleeping ? "SLEEP" : "WAKE");
/* Done if we're already in the requested state */
if (sleep == bus->sleeping)
return 0;
/* Going to sleep: set the alarm and turn off the lights... */
if (sleep) {
/* Don't sleep if something is pending */
if (bus->dpc_sched || bus->rxskip || pktq_len(&bus->txq))
return -EBUSY;
/* Make sure the controller has the bus up */
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
/* Tell device to start using OOB wakeup */
ret = w_sdreg32(bus, SMB_USE_OOB,
offsetof(struct sdpcmd_regs, tosbmailbox));
if (ret != 0)
brcmf_dbg(ERROR, "CANNOT SIGNAL CHIP, WILL NOT WAKE UP!!\n");
/* Turn off our contribution to the HT clock request */
brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false);
brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
SBSDIO_FORCE_HW_CLKREQ_OFF, NULL);
/* Isolate the bus */
brcmf_sdio_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
SBSDIO_DEVCTL_PADS_ISO, NULL);
/* Change state */
bus->sleeping = true;
} else {
/* Waking up: bus power up is ok, set local state */
brcmf_sdio_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
0, NULL);
/* Make sure the controller has the bus up */
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
/* Send misc interrupt to indicate OOB not needed */
ret = w_sdreg32(bus, 0,
offsetof(struct sdpcmd_regs, tosbmailboxdata));
if (ret == 0)
ret = w_sdreg32(bus, SMB_DEV_INT,
offsetof(struct sdpcmd_regs, tosbmailbox));
if (ret != 0)
brcmf_dbg(ERROR, "CANNOT SIGNAL CHIP TO CLEAR OOB!!\n");
/* Make sure we have SD bus access */
brcmf_sdbrcm_clkctl(bus, CLK_SDONLY, false);
/* Change state */
bus->sleeping = false;
}
return 0;
}
static void bus_wake(struct brcmf_sdio *bus)
{
if (bus->sleeping)
brcmf_sdbrcm_bussleep(bus, false);
}
static u32 brcmf_sdbrcm_hostmail(struct brcmf_sdio *bus)
{
u32 intstatus = 0;
......@@ -2267,8 +2191,6 @@ static void brcmf_sdbrcm_bus_stop(struct device *dev)
down(&bus->sdsem);
bus_wake(bus);
/* Enable clock for device interrupts */
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
......@@ -2404,8 +2326,6 @@ static bool brcmf_sdbrcm_dpc(struct brcmf_sdio *bus)
}
}
bus_wake(bus);
/* Make sure backplane clock is on */
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, true);
if (bus->clkstate == CLK_PENDING)
......@@ -2918,8 +2838,6 @@ brcmf_sdbrcm_bus_txctl(struct device *dev, unsigned char *msg, uint msglen)
/* Need to lock here to protect txseq and SDIO tx calls */
down(&bus->sdsem);
bus_wake(bus);
/* Make sure backplane clock is on */
brcmf_sdbrcm_clkctl(bus, CLK_AVAIL, false);
......@@ -3776,12 +3694,6 @@ void brcmf_sdbrcm_isr(void *arg)
bus->sdcnt.intrcount++;
bus->ipend = true;
/* Shouldn't get this interrupt if we're sleeping? */
if (bus->sleeping) {
brcmf_dbg(ERROR, "INTERRUPT WHILE SLEEPING??\n");
return;
}
/* Disable additional interrupts (is this needed now)? */
if (!bus->intr)
brcmf_dbg(ERROR, "isr w/o interrupt configured!\n");
......@@ -3801,10 +3713,6 @@ static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_sdio *bus)
brcmf_dbg(TIMER, "Enter\n");
/* Ignore the timer if simulating bus down */
if (bus->sleeping)
return false;
down(&bus->sdsem);
/* Poll period: check device if appropriate. */
......@@ -4024,7 +3932,6 @@ static bool brcmf_sdbrcm_probe_init(struct brcmf_sdio *bus)
SDIO_FUNC_ENABLE_1, NULL);
bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
bus->sleeping = false;
bus->rxflow = false;
/* Done with backplane-dependent accesses, can drop clock... */
......
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