diff options
| author | Luciano Coelho <coelho@ti.com> | 2012-05-10 09:13:07 (GMT) |
|---|---|---|
| committer | Luciano Coelho <coelho@ti.com> | 2012-06-05 12:54:09 (GMT) |
| commit | 197c62832b1a347f933fea286fc70266026ef5fb (patch) | |
| tree | 2758f23af401f4935edc7bc4d634f27a9af70f69 /drivers/net | |
| parent | 9a1a69901dae144ae160af5ac38848866d7c83b1 (diff) | |
| download | linux-197c62832b1a347f933fea286fc70266026ef5fb.tar.xz | |
wlcore_sdio/wl18xx: use SDIO revision number to identify wl18xx chips
At least in PG1, the wl18xx chips use the same SDIO vendor/device ID,
so it's not possible to figure out which driver is to be used. As a
workaround, we can check the SDIO revision number, because wl18xx uses
3.00 and wl12xx does not.
Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/ti/wlcore/sdio.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/net/wireless/ti/wlcore/sdio.c b/drivers/net/wireless/ti/wlcore/sdio.c index 0a72347..1082e39 100644 --- a/drivers/net/wireless/ti/wlcore/sdio.c +++ b/drivers/net/wireless/ti/wlcore/sdio.c @@ -25,6 +25,7 @@ #include <linux/module.h> #include <linux/vmalloc.h> #include <linux/platform_device.h> +#include <linux/mmc/sdio.h> #include <linux/mmc/sdio_func.h> #include <linux/mmc/sdio_ids.h> #include <linux/mmc/card.h> @@ -196,6 +197,7 @@ static int __devinit wl1271_probe(struct sdio_func *func, struct resource res[1]; mmc_pm_flag_t mmcflags; int ret = -ENOMEM; + const char *chip_family; /* We are only able to handle the wlan function */ if (func->num != 0x02) @@ -236,7 +238,18 @@ static int __devinit wl1271_probe(struct sdio_func *func, /* Tell PM core that we don't need the card to be powered now */ pm_runtime_put_noidle(&func->dev); - glue->core = platform_device_alloc("wl12xx", -1); + /* + * Due to a hardware bug, we can't differentiate wl18xx from + * wl12xx, because both report the same device ID. The only + * way to differentiate is by checking the SDIO revision, + * which is 3.00 on the wl18xx chips. + */ + if (func->card->cccr.sdio_vsn == SDIO_SDIO_REV_3_00) + chip_family = "wl18xx"; + else + chip_family = "wl12xx"; + + glue->core = platform_device_alloc(chip_family, -1); if (!glue->core) { dev_err(glue->dev, "can't allocate platform_device"); ret = -ENOMEM; |