diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/libertas/if_sdio.c | 57 | ||||
| -rw-r--r-- | drivers/net/wireless/libertas/if_sdio.h | 3 |
2 files changed, 58 insertions, 2 deletions
diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c index 69d7fd31319..e998c123e0c 100644 --- a/drivers/net/wireless/libertas/if_sdio.c +++ b/drivers/net/wireless/libertas/if_sdio.c @@ -107,6 +107,8 @@ struct if_sdio_card { struct workqueue_struct *workqueue; struct work_struct packet_worker; + + u8 rx_unit; }; /********************************************************************/ @@ -136,6 +138,46 @@ static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err) return scratch; } +static u8 if_sdio_read_rx_unit(struct if_sdio_card *card) +{ + int ret; + u8 rx_unit; + + rx_unit = sdio_readb(card->func, IF_SDIO_RX_UNIT, &ret); + + if (ret) + rx_unit = 0; + + return rx_unit; +} + +static u16 if_sdio_read_rx_len(struct if_sdio_card *card, int *err) +{ + int ret; + u16 rx_len; + + switch (card->model) { + case IF_SDIO_MODEL_8385: + case IF_SDIO_MODEL_8686: + rx_len = if_sdio_read_scratch(card, &ret); + break; + case IF_SDIO_MODEL_8688: + default: /* for newer chipsets */ + rx_len = sdio_readb(card->func, IF_SDIO_RX_LEN, &ret); + if (!ret) + rx_len <<= card->rx_unit; + else + rx_len = 0xffff; /* invalid length */ + + break; + } + + if (err) + *err = ret; + + return rx_len; +} + static int if_sdio_handle_cmd(struct if_sdio_card *card, u8 *buffer, unsigned size) { @@ -254,7 +296,7 @@ static int if_sdio_card_to_host(struct if_sdio_card *card) lbs_deb_enter(LBS_DEB_SDIO); - size = if_sdio_read_scratch(card, &ret); + size = if_sdio_read_rx_len(card, &ret); if (ret) goto out; @@ -923,10 +965,21 @@ static int if_sdio_probe(struct sdio_func *func, priv->fw_ready = 1; + sdio_claim_host(func); + + /* + * Get rx_unit if the chip is SD8688 or newer. + * SD8385 & SD8686 do not have rx_unit. + */ + if ((card->model != IF_SDIO_MODEL_8385) + && (card->model != IF_SDIO_MODEL_8686)) + card->rx_unit = if_sdio_read_rx_unit(card); + else + card->rx_unit = 0; + /* * Enable interrupts now that everything is set up */ - sdio_claim_host(func); sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret); sdio_release_host(func); if (ret) diff --git a/drivers/net/wireless/libertas/if_sdio.h b/drivers/net/wireless/libertas/if_sdio.h index cea343f9afd..d3a4fbe0769 100644 --- a/drivers/net/wireless/libertas/if_sdio.h +++ b/drivers/net/wireless/libertas/if_sdio.h @@ -44,6 +44,9 @@ #define IF_SDIO_SCRATCH_OLD 0x80fe #define IF_SDIO_FIRMWARE_OK 0xfedc +#define IF_SDIO_RX_LEN 0x42 +#define IF_SDIO_RX_UNIT 0x43 + #define IF_SDIO_EVENT 0x80fc #define IF_SDIO_BLOCK_SIZE 256 |