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wlcore_sdio/wl18xx: use SDIO revision number to identify wl18xx chips

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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>
This commit is contained in:
Luciano Coelho 2012-05-10 12:13:07 +03:00
parent 9a1a69901d
commit 197c62832b
1 changed files with 14 additions and 1 deletions
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15
drivers/net/wireless/ti/wlcore/sdio.c
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@ -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;