From df472894ab21814edf54a3cd81c8ae7066365e0e Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Thu, 10 May 2012 12:13:57 +0300 Subject: [PATCH] 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: Luciano Coelho Signed-off-by: Arik Nemtsov --- drivers/net/wireless/ti/wlcore/sdio.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/net/wireless/ti/wlcore/sdio.c b/drivers/net/wireless/ti/wlcore/sdio.c index 1082e394e8f7..c67ec482e445 100644 --- a/drivers/net/wireless/ti/wlcore/sdio.c +++ b/drivers/net/wireless/ti/wlcore/sdio.c @@ -33,6 +33,7 @@ #include #include #include +#include #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 "); MODULE_AUTHOR("Juuso Oikarinen "); -- 2.20.1