/* Clear partial in any case */
bus->cur_read.len = 0;
-
- /* If we can't reach the device, signal failure */
- if (err)
- bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
}
/* return total length of buffer chain */
bus->rxpending = true;
for (rd->seq_num = bus->rx_seq, rxleft = maxframes;
- !bus->rxskip && rxleft &&
- bus->sdiodev->bus_if->state != BRCMF_BUS_DOWN;
+ !bus->rxskip && rxleft && brcmf_bus_ready(bus->sdiodev->bus_if);
rd->seq_num++, rxleft--) {
/* Handle glomming separately */
bus->watchdog_tsk = NULL;
}
- sdio_claim_host(bus->sdiodev->func[1]);
-
- /* Enable clock for device interrupts */
- brcmf_sdio_bus_sleep(bus, false, false);
+ if (bus_if->state == BRCMF_BUS_DOWN) {
+ sdio_claim_host(sdiodev->func[1]);
+
+ /* Enable clock for device interrupts */
+ brcmf_sdio_bus_sleep(bus, false, false);
+
+ /* Disable and clear interrupts at the chip level also */
+ w_sdreg32(bus, 0, offsetof(struct sdpcmd_regs, hostintmask));
+ local_hostintmask = bus->hostintmask;
+ bus->hostintmask = 0;
+
+ /* Force backplane clocks to assure F2 interrupt propagates */
+ saveclk = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
+ &err);
+ if (!err)
+ brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
+ (saveclk | SBSDIO_FORCE_HT), &err);
+ if (err)
+ brcmf_err("Failed to force clock for F2: err %d\n",
+ err);
- /* Disable and clear interrupts at the chip level also */
- w_sdreg32(bus, 0, offsetof(struct sdpcmd_regs, hostintmask));
- local_hostintmask = bus->hostintmask;
- bus->hostintmask = 0;
+ /* Turn off the bus (F2), free any pending packets */
+ brcmf_dbg(INTR, "disable SDIO interrupts\n");
+ sdio_disable_func(sdiodev->func[SDIO_FUNC_2]);
- /* Change our idea of bus state */
- bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
+ /* Clear any pending interrupts now that F2 is disabled */
+ w_sdreg32(bus, local_hostintmask,
+ offsetof(struct sdpcmd_regs, intstatus));
- /* Force clocks on backplane to be sure F2 interrupt propagates */
- saveclk = brcmf_sdiod_regrb(bus->sdiodev,
- SBSDIO_FUNC1_CHIPCLKCSR, &err);
- if (!err) {
- brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR,
- (saveclk | SBSDIO_FORCE_HT), &err);
+ sdio_release_host(sdiodev->func[1]);
}
- if (err)
- brcmf_err("Failed to force clock for F2: err %d\n", err);
-
- /* Turn off the bus (F2), free any pending packets */
- brcmf_dbg(INTR, "disable SDIO interrupts\n");
- sdio_disable_func(bus->sdiodev->func[SDIO_FUNC_2]);
-
- /* Clear any pending interrupts now that F2 is disabled */
- w_sdreg32(bus, local_hostintmask,
- offsetof(struct sdpcmd_regs, intstatus));
-
- sdio_release_host(bus->sdiodev->func[1]);
-
/* Clear the data packet queues */
brcmu_pktq_flush(&bus->txq, true, NULL, NULL);
/* Check for inconsistent device control */
devctl = brcmf_sdiod_regrb(bus->sdiodev,
SBSDIO_DEVICE_CTL, &err);
- if (err) {
- brcmf_err("error reading DEVCTL: %d\n", err);
- bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
- }
#endif /* DEBUG */
/* Read CSR, if clock on switch to AVAIL, else ignore */
clkctl = brcmf_sdiod_regrb(bus->sdiodev,
SBSDIO_FUNC1_CHIPCLKCSR, &err);
- if (err) {
- brcmf_err("error reading CSR: %d\n",
- err);
- bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
- }
brcmf_dbg(SDIO, "DPC: PENDING, devctl 0x%02x clkctl 0x%02x\n",
devctl, clkctl);
if (SBSDIO_HTAV(clkctl)) {
devctl = brcmf_sdiod_regrb(bus->sdiodev,
SBSDIO_DEVICE_CTL, &err);
- if (err) {
- brcmf_err("error reading DEVCTL: %d\n",
- err);
- bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
- }
devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY;
brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL,
devctl, &err);
- if (err) {
- brcmf_err("error writing DEVCTL: %d\n",
- err);
- bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
- }
bus->clkstate = CLK_AVAIL;
}
}
txlimit -= framecnt;
}
- if ((bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) || (err != 0)) {
+ if (!brcmf_bus_ready(bus->sdiodev->bus_if) || (err != 0)) {
brcmf_err("failed backplane access over SDIO, halting operation\n");
- bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
atomic_set(&bus->intstatus, 0);
} else if (atomic_read(&bus->intstatus) ||
atomic_read(&bus->ipend) > 0 ||
}
/* Allow HT Clock now that the ARM is running. */
- bus->sdiodev->bus_if->state = BRCMF_BUS_LOAD;
+ brcmf_bus_change_state(bus->sdiodev->bus_if, BRCMF_BUS_LOAD);
bcmerror = 0;
err:
return;
}
- if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) {
+ if (!brcmf_bus_ready(bus->sdiodev->bus_if)) {
brcmf_err("bus is down. we have nothing to do\n");
return;
}
else
if (brcmf_sdio_intr_rstatus(bus)) {
brcmf_err("failed backplane access\n");
- bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
}
/* Disable additional interrupts (is this needed now)? */
goto fail;
}
+ /* SDIO register access works so moving
+ * state from UNKNOWN to DOWN.
+ */
+ brcmf_bus_change_state(bus->sdiodev->bus_if, BRCMF_BUS_DOWN);
+
if (brcmf_sdio_chip_attach(bus->sdiodev, &bus->ci)) {
brcmf_err("brcmf_sdio_chip_attach failed!\n");
goto fail;
/* Disable F2 to clear any intermediate frame state on the dongle */
sdio_disable_func(bus->sdiodev->func[SDIO_FUNC_2]);
- bus->sdiodev->bus_if->state = BRCMF_BUS_DOWN;
bus->rxflow = false;
/* Done with backplane-dependent accesses, can drop clock... */
}
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_chip_enter_download(bus->sdiodev, bus->ci);
- brcmf_sdio_clkctl(bus, CLK_NONE, false);
- sdio_release_host(bus->sdiodev->func[1]);
+ if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) {
+ 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_chip_enter_download(bus->sdiodev,
+ bus->ci);
+ brcmf_sdio_clkctl(bus, CLK_NONE, false);
+ sdio_release_host(bus->sdiodev->func[1]);
+ }
brcmf_sdio_chip_detach(&bus->ci);
}
projects / people / arne_f / kernel.git / blobdiff