diff options
Diffstat (limited to 'drivers/net/wireless/libertas/if_sdio.c')
-rw-r--r-- | drivers/net/wireless/libertas/if_sdio.c | 127 |
1 files changed, 64 insertions, 63 deletions
diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c index 7a73f625273..094176e92eb 100644 --- a/drivers/net/wireless/libertas/if_sdio.c +++ b/drivers/net/wireless/libertas/if_sdio.c @@ -34,6 +34,8 @@ #include <linux/mmc/card.h> #include <linux/mmc/sdio_func.h> #include <linux/mmc/sdio_ids.h> +#include <linux/mmc/sdio.h> +#include <linux/mmc/host.h> #include "host.h" #include "decl.h" @@ -312,12 +314,30 @@ out: return ret; } +static int if_sdio_wait_status(struct if_sdio_card *card, const u8 condition) +{ + u8 status; + unsigned long timeout; + int ret = 0; + + timeout = jiffies + HZ; + while (1) { + status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); + if (ret) + return ret; + if ((status & condition) == condition) + break; + if (time_after(jiffies, timeout)) + return -ETIMEDOUT; + mdelay(1); + } + return ret; +} + static int if_sdio_card_to_host(struct if_sdio_card *card) { int ret; - u8 status; u16 size, type, chunk; - unsigned long timeout; lbs_deb_enter(LBS_DEB_SDIO); @@ -332,19 +352,9 @@ static int if_sdio_card_to_host(struct if_sdio_card *card) goto out; } - timeout = jiffies + HZ; - while (1) { - status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); - if (ret) - goto out; - if (status & IF_SDIO_IO_RDY) - break; - if (time_after(jiffies, timeout)) { - ret = -ETIMEDOUT; - goto out; - } - mdelay(1); - } + ret = if_sdio_wait_status(card, IF_SDIO_IO_RDY); + if (ret) + goto out; /* * The transfer must be in one transaction or the firmware @@ -411,8 +421,6 @@ static void if_sdio_host_to_card_worker(struct work_struct *work) { struct if_sdio_card *card; struct if_sdio_packet *packet; - unsigned long timeout; - u8 status; int ret; unsigned long flags; @@ -432,25 +440,15 @@ static void if_sdio_host_to_card_worker(struct work_struct *work) sdio_claim_host(card->func); - timeout = jiffies + HZ; - while (1) { - status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); - if (ret) - goto release; - if (status & IF_SDIO_IO_RDY) - break; - if (time_after(jiffies, timeout)) { - ret = -ETIMEDOUT; - goto release; - } - mdelay(1); + ret = if_sdio_wait_status(card, IF_SDIO_IO_RDY); + if (ret == 0) { + ret = sdio_writesb(card->func, card->ioport, + packet->buffer, packet->nb); } - ret = sdio_writesb(card->func, card->ioport, - packet->buffer, packet->nb); if (ret) - goto release; -release: + lbs_pr_err("error %d sending packet to firmware\n", ret); + sdio_release_host(card->func); kfree(packet); @@ -463,10 +461,11 @@ release: /* Firmware */ /********************************************************************/ +#define FW_DL_READY_STATUS (IF_SDIO_IO_RDY | IF_SDIO_DL_RDY) + static int if_sdio_prog_helper(struct if_sdio_card *card) { int ret; - u8 status; const struct firmware *fw; unsigned long timeout; u8 *chunk_buffer; @@ -498,20 +497,14 @@ static int if_sdio_prog_helper(struct if_sdio_card *card) size = fw->size; while (size) { - timeout = jiffies + HZ; - while (1) { - status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); - if (ret) - goto release; - if ((status & IF_SDIO_IO_RDY) && - (status & IF_SDIO_DL_RDY)) - break; - if (time_after(jiffies, timeout)) { - ret = -ETIMEDOUT; - goto release; - } - mdelay(1); - } + ret = if_sdio_wait_status(card, FW_DL_READY_STATUS); + if (ret) + goto release; + + /* On some platforms (like Davinci) the chip needs more time + * between helper blocks. + */ + mdelay(2); chunk_size = min(size, (size_t)60); @@ -581,7 +574,6 @@ out: static int if_sdio_prog_real(struct if_sdio_card *card) { int ret; - u8 status; const struct firmware *fw; unsigned long timeout; u8 *chunk_buffer; @@ -613,20 +605,9 @@ static int if_sdio_prog_real(struct if_sdio_card *card) size = fw->size; while (size) { - timeout = jiffies + HZ; - while (1) { - status = sdio_readb(card->func, IF_SDIO_STATUS, &ret); - if (ret) - goto release; - if ((status & IF_SDIO_IO_RDY) && - (status & IF_SDIO_DL_RDY)) - break; - if (time_after(jiffies, timeout)) { - ret = -ETIMEDOUT; - goto release; - } - mdelay(1); - } + ret = if_sdio_wait_status(card, FW_DL_READY_STATUS); + if (ret) + goto release; req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret); if (ret) @@ -942,6 +923,7 @@ static int if_sdio_probe(struct sdio_func *func, int ret, i; unsigned int model; struct if_sdio_packet *packet; + struct mmc_host *host = func->card->host; lbs_deb_enter(LBS_DEB_SDIO); @@ -1022,6 +1004,25 @@ static int if_sdio_probe(struct sdio_func *func, if (ret) goto disable; + /* For 1-bit transfers to the 8686 model, we need to enable the + * interrupt flag in the CCCR register. Set the MMC_QUIRK_LENIENT_FN0 + * bit to allow access to non-vendor registers. */ + if ((card->model == IF_SDIO_MODEL_8686) && + (host->caps & MMC_CAP_SDIO_IRQ) && + (host->ios.bus_width == MMC_BUS_WIDTH_1)) { + u8 reg; + + func->card->quirks |= MMC_QUIRK_LENIENT_FN0; + reg = sdio_f0_readb(func, SDIO_CCCR_IF, &ret); + if (ret) + goto release_int; + + reg |= SDIO_BUS_ECSI; + sdio_f0_writeb(func, reg, SDIO_CCCR_IF, &ret); + if (ret) + goto release_int; + } + card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret); if (ret) goto release_int; |