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Commit df472894 authored by Luciano Coelho's avatar Luciano Coelho
Browse files

wlcore: add module parameter to dump SDIO reads and writes 



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: default avatarLuciano Coelho <coelho@ti.com>
Signed-off-by: default avatarArik Nemtsov <arik@wizery.com>
parent 1ddbc7d4

drivers/net/wireless/ti/wlcore/sdio.c

+20 −0
Original line number Diff line number Diff line
@@ -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>");