brcmfmac: remove obsolete sdio bus sleep mechanism

Remove sdio bus sleep mechanism since it is never invoked.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@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 4580ff34c2d0dc13deea12497d7b8bf605e3bb78..2ca9e8c179c7fdb8bd1e1a3f4a83d9656ba61186 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c
@@ -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... */