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wlcore: add module parameter to dump SDIO reads and writes

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In some cases we may want to dump all the SDIO data in order to get
detailed information for debugging the communication with the
firmware.

Add printks to dump the data and a module parameter to enable/disable
it.

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 12:13:57 +03:00
parent 1ddbc7d4c7
commit df472894ab
1 changed files with 20 additions and 0 deletions
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20
drivers/net/wireless/ti/wlcore/sdio.c
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@ -33,6 +33,7 @@
#include <linux/gpio.h>
#include <linux/wl12xx.h>
#include <linux/pm_runtime.h>
#include <linux/printk.h>
#include "wlcore.h"
#include "wl12xx_80211.h"
@ -46,6 +47,8 @@
#define SDIO_DEVICE_ID_TI_WL1271 0x4076
#endif
static bool dump = false;
struct wl12xx_sdio_glue {
struct device *dev;
struct platform_device *core;
@ -77,6 +80,13 @@ static void wl12xx_sdio_raw_read(struct device *child, int addr, void *buf,
sdio_claim_host(func);
if (unlikely(dump)) {
printk(KERN_DEBUG "wlcore_sdio: READ from 0x%04x\n", addr);
print_hex_dump(KERN_DEBUG, "wlcore_sdio: READ ",
DUMP_PREFIX_OFFSET, 16, 1,
buf, len, false);
}
if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
((u8 *)buf)[0] = sdio_f0_readb(func, addr, &ret);
dev_dbg(child->parent, "sdio read 52 addr 0x%x, byte 0x%02x\n",
@ -106,6 +116,13 @@ static void wl12xx_sdio_raw_write(struct device *child, int addr, void *buf,
sdio_claim_host(func);
if (unlikely(dump)) {
printk(KERN_DEBUG "wlcore_sdio: WRITE to 0x%04x\n", addr);
print_hex_dump(KERN_DEBUG, "wlcore_sdio: WRITE ",
DUMP_PREFIX_OFFSET, 16, 1,
buf, len, false);
}
if (unlikely(addr == HW_ACCESS_ELP_CTRL_REG)) {
sdio_f0_writeb(func, ((u8 *)buf)[0], addr, &ret);
dev_dbg(child->parent, "sdio write 52 addr 0x%x, byte 0x%02x\n",
@ -380,6 +397,9 @@ static void __exit wl1271_exit(void)
module_init(wl1271_init);
module_exit(wl1271_exit);
module_param(dump, bool, S_IRUSR | S_IWUSR);
MODULE_PARM_DESC(dump, "Enable sdio read/write dumps.");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");