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brcmfmac: use helper function for changing SDIO state 

Changing the SDIO state of the driver involves changing the bus
interface state. Adding a helper function makes sure that knowledge
is in one place.

Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Arend van Spriel 2015-02-06 18:36:42 +01:00 committed by Kalle Valo
parent ffdcad0596
commit a1ce7a0d6a
3 changed files with 54 additions and 26 deletions
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41
drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
View File

@ -197,6 +197,30 @@ int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
return 0;
}
void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
enum brcmf_sdiod_state state)
{
if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM ||
state == sdiodev->state)
return;
brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state);
switch (sdiodev->state) {
case BRCMF_SDIOD_DATA:
/* any other state means bus interface is down */
brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN);
break;
case BRCMF_SDIOD_DOWN:
/* transition from DOWN to DATA means bus interface is up */
if (state == BRCMF_SDIOD_DATA)
brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP);
break;
default:
break;
}
sdiodev->state = state;
}
static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func,
uint regaddr, u8 byte)
{
@ -269,12 +293,6 @@ static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn,
return ret;
}
static void brcmf_sdiod_nomedium_state(struct brcmf_sdio_dev *sdiodev)
{
sdiodev->state = BRCMF_STATE_NOMEDIUM;
brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN);
}
static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
u8 regsz, void *data, bool write)
{
@ -282,7 +300,7 @@ static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
s32 retry = 0;
int ret;
if (sdiodev->state == BRCMF_STATE_NOMEDIUM)
if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
return -ENOMEDIUM;
/*
@ -308,7 +326,7 @@ static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
if (ret == -ENOMEDIUM)
brcmf_sdiod_nomedium_state(sdiodev);
brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
else if (ret != 0) {
/*
* SleepCSR register access can fail when
@ -331,7 +349,7 @@ brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
int err = 0, i;
u8 addr[3];
if (sdiodev->state == BRCMF_STATE_NOMEDIUM)
if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
return -ENOMEDIUM;
addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
@ -460,7 +478,7 @@ static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr,
req_sz);
if (err == -ENOMEDIUM)
brcmf_sdiod_nomedium_state(sdiodev);
brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
return err;
}
@ -595,7 +613,7 @@ static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
if (ret == -ENOMEDIUM) {
brcmf_sdiod_nomedium_state(sdiodev);
brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
break;
} else if (ret != 0) {
brcmf_err("CMD53 sg block %s failed %d\n",
@ -1050,6 +1068,7 @@ static int brcmf_ops_sdio_probe(struct sdio_func *func,
bus_if->wowl_supported = true;
#endif
brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN);
sdiodev->sleeping = false;
atomic_set(&sdiodev->suspend, false);
init_waitqueue_head(&sdiodev->idle_wait);

18
drivers/net/wireless/brcm80211/brcmfmac/sdio.c
View File

@ -1909,7 +1909,7 @@ static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes)
bus->rxpending = true;
for (rd->seq_num = bus->rx_seq, rxleft = maxframes;
!bus->rxskip && rxleft && bus->sdiodev->state == BRCMF_STATE_DATA;
!bus->rxskip && rxleft && bus->sdiodev->state == BRCMF_SDIOD_DATA;
rd->seq_num++, rxleft--) {
/* Handle glomming separately */
@ -2415,7 +2415,7 @@ static uint brcmf_sdio_sendfromq(struct brcmf_sdio *bus, uint maxframes)
}
/* Deflow-control stack if needed */
if ((bus->sdiodev->state == BRCMF_STATE_DATA) &&
if ((bus->sdiodev->state == BRCMF_SDIOD_DATA) &&
bus->txoff && (pktq_len(&bus->txq) < TXLOW)) {
bus->txoff = false;
brcmf_txflowblock(bus->sdiodev->dev, false);
@ -2503,7 +2503,7 @@ static void brcmf_sdio_bus_stop(struct device *dev)
bus->watchdog_tsk = NULL;
}
if (sdiodev->state != BRCMF_STATE_NOMEDIUM) {
if (sdiodev->state != BRCMF_SDIOD_NOMEDIUM) {
sdio_claim_host(sdiodev->func[1]);
/* Enable clock for device interrupts */
@ -2755,7 +2755,7 @@ static void brcmf_sdio_dpc(struct brcmf_sdio *bus)
brcmf_sdio_sendfromq(bus, framecnt);
}
if ((bus->sdiodev->state != BRCMF_STATE_DATA) || (err != 0)) {
if ((bus->sdiodev->state != BRCMF_SDIOD_DATA) || (err != 0)) {
brcmf_err("failed backplane access over SDIO, halting operation\n");
atomic_set(&bus->intstatus, 0);
} else if (atomic_read(&bus->intstatus) ||
@ -3411,7 +3411,7 @@ static int brcmf_sdio_download_firmware(struct brcmf_sdio *bus,
}
/* Allow full data communication using DPC from now on. */
bus->sdiodev->state = BRCMF_STATE_DATA;
brcmf_sdiod_change_state(bus->sdiodev, BRCMF_SDIOD_DATA);
bcmerror = 0;
err:
@ -3557,7 +3557,7 @@ void brcmf_sdio_isr(struct brcmf_sdio *bus)
return;
}
if (bus->sdiodev->state != BRCMF_STATE_DATA) {
if (bus->sdiodev->state != BRCMF_SDIOD_DATA) {
brcmf_err("bus is down. we have nothing to do\n");
return;
}
@ -3623,7 +3623,7 @@ static bool brcmf_sdio_bus_watchdog(struct brcmf_sdio *bus)
}
#ifdef DEBUG
/* Poll for console output periodically */
if (bus->sdiodev->state == BRCMF_STATE_DATA &&
if (bus->sdiodev->state == BRCMF_SDIOD_DATA &&
bus->console_interval != 0) {
bus->console.count += BRCMF_WD_POLL_MS;
if (bus->console.count >= bus->console_interval) {
@ -4242,7 +4242,7 @@ void brcmf_sdio_remove(struct brcmf_sdio *bus)
destroy_workqueue(bus->brcmf_wq);
if (bus->ci) {
if (bus->sdiodev->state != BRCMF_STATE_NOMEDIUM) {
if (bus->sdiodev->state != BRCMF_SDIOD_NOMEDIUM) {
sdio_claim_host(bus->sdiodev->func[1]);
brcmf_sdio_clkctl(bus, CLK_AVAIL, false);
/* Leave the device in state where it is
@ -4277,7 +4277,7 @@ void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, uint wdtick)
}
/* don't start the wd until fw is loaded */
if (bus->sdiodev->state != BRCMF_STATE_DATA)
if (bus->sdiodev->state != BRCMF_SDIOD_DATA)
return;
if (wdtick) {

21
drivers/net/wireless/brcm80211/brcmfmac/sdio.h
View File

@ -155,11 +155,17 @@
/* watchdog polling interval in ms */
#define BRCMF_WD_POLL_MS 10
/* The state of the bus */
enum brcmf_sdio_state {
BRCMF_STATE_DOWN, /* Device available, still initialising */
BRCMF_STATE_DATA, /* Ready for data transfers, DPC enabled */
BRCMF_STATE_NOMEDIUM /* No medium access to dongle possible */
/**
* enum brcmf_sdiod_state - the state of the bus.
*
* @BRCMF_SDIOD_DOWN: Device can be accessed, no DPC.
* @BRCMF_SDIOD_DATA: Ready for data transfers, DPC enabled.
* @BRCMF_SDIOD_NOMEDIUM: No medium access to dongle possible.
*/
enum brcmf_sdiod_state {
BRCMF_SDIOD_DOWN,
BRCMF_SDIOD_DATA,
BRCMF_SDIOD_NOMEDIUM
};
struct brcmf_sdreg {
@ -194,7 +200,7 @@ struct brcmf_sdio_dev {
char fw_name[BRCMF_FW_PATH_LEN + BRCMF_FW_NAME_LEN];
char nvram_name[BRCMF_FW_PATH_LEN + BRCMF_FW_NAME_LEN];
bool wowl_enabled;
enum brcmf_sdio_state state;
enum brcmf_sdiod_state state;
};
/* sdio core registers */
@ -345,4 +351,7 @@ void brcmf_sdio_isr(struct brcmf_sdio *bus);
void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, uint wdtick);
void brcmf_sdio_wowl_config(struct device *dev, bool enabled);
void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
enum brcmf_sdiod_state state);
#endif /* BRCMFMAC_SDIO_H */