From: Luciano Coelho <coelho@xxxxxx>
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@xxxxxx>
Signed-off-by: Arik Nemtsov <arik@xxxxxxxxxx>
---
drivers/net/wireless/ti/wlcore/sdio.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
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;
--
1.7.9.5
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