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Message-Id: <1362459259-9733-8-git-send-email-linux@roeck-us.net>
Date: Mon, 4 Mar 2013 20:54:18 -0800
From: Guenter Roeck <linux@...ck-us.net>
To: linux-watchdog@...r.kernel.org
Cc: Wim Van Sebroeck <wim@...ana.be>, linux-kernel@...r.kernel.org,
Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 7/8] watchdog: w83627hf: Add support for W83697HF and W83697UG
Major difference is that the watchdog control and counter registers
are different on both chips.
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
drivers/watchdog/Kconfig | 2 ++
drivers/watchdog/w83627hf_wdt.c | 60 +++++++++++++++++++++++++++++++--------
2 files changed, 50 insertions(+), 12 deletions(-)
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 346bc70..acdd347 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -868,6 +868,8 @@ config W83627HF_WDT
W83637HF
W83667HG-B
W83687THF
+ W83697HF
+ W83697UG
NCT6775
NCT6776
diff --git a/drivers/watchdog/w83627hf_wdt.c b/drivers/watchdog/w83627hf_wdt.c
index b23f296..2acac16 100644
--- a/drivers/watchdog/w83627hf_wdt.c
+++ b/drivers/watchdog/w83627hf_wdt.c
@@ -45,9 +45,11 @@
#define WATCHDOG_TIMEOUT 60 /* 60 sec default timeout */
static int wdt_io;
+static int cr_wdt_timeout; /* WDT timeout register */
+static int cr_wdt_control; /* WDT control register */
-enum chips { w83627hf, w83637hf, w83627thf, w83687thf, w83627ehf, w83627dhg,
- w83627uhg, w83667hg_b, nct6775, nct6776 };
+enum chips { w83627hf, w83697hf, w83697ug, w83637hf, w83627thf, w83687thf,
+ w83627ehf, w83627dhg, w83627uhg, w83667hg_b, nct6775, nct6776 };
/*
* Kernel methods.
@@ -61,6 +63,8 @@ enum chips { w83627hf, w83637hf, w83627thf, w83687thf, w83627ehf, w83627dhg,
#define W83627HF_LD_WDT 0x08
#define W83627HF_ID 0x52
+#define W83697HF_ID 0x60
+#define W83697UG_ID 0x68
#define W83637HF_ID 0x70
#define W83627THF_ID 0x82
#define W83687THF_ID 0x85
@@ -71,6 +75,12 @@ enum chips { w83627hf, w83637hf, w83627thf, w83687thf, w83627ehf, w83627dhg,
#define NCT6775_ID 0xb4
#define NCT6776_ID 0xc3
+#define W83627HF_WDT_TIMEOUT 0xf6
+#define W83697HF_WDT_TIMEOUT 0xf4
+
+#define W83627HF_WDT_CONTROL 0xf5
+#define W83697HF_WDT_CONTROL 0xf3
+
static void superio_outb(int reg, int val)
{
outb(reg, WDT_EFER);
@@ -116,6 +126,17 @@ static void w83627hf_init(enum chips chip)
t = superio_inb(0x2B) & ~0x10;
superio_outb(0x2B, t); /* set GPIO24 to WDT0 */
break;
+ case w83697hf:
+ /* Set pin 119 to WDTO# mode (= CR29, WDT0) */
+ t = superio_inb(0x29) & ~0x60;
+ t |= 0x20;
+ superio_outb(0x29, t);
+ break;
+ case w83697ug:
+ /* Set pin 118 to WDTO# mode */
+ t = superio_inb(0x2b) & ~0x04;
+ superio_outb(0x2b, t);
+ break;
case w83627thf:
t = (superio_inb(0x2B) & ~0x08) | 0x04;
superio_outb(0x2B, t); /* set GPIO3 to WDT0 */
@@ -125,10 +146,10 @@ static void w83627hf_init(enum chips chip)
case w83627uhg:
t = superio_inb(0x2D) & ~0x01; /* PIN77 -> WDT0# */
superio_outb(0x2D, t); /* set GPIO5 to WDT0 */
- t = superio_inb(0xF5);
+ t = superio_inb(cr_wdt_control);
t |= 0x02; /* enable the WDTO# output low pulse
* to the KBRST# pin */
- superio_outb(0xF5, t);
+ superio_outb(cr_wdt_control, t);
break;
case w83637hf:
case w83687thf:
@@ -140,25 +161,25 @@ static void w83627hf_init(enum chips chip)
* These chips support more than one WDTO# output pin.
* Don't touch it, and hope the BIOS does the right thing.
*/
- t = superio_inb(0xF5);
+ t = superio_inb(cr_wdt_control);
t |= 0x02; /* enable the WDTO# output low pulse
* to the KBRST# pin */
- superio_outb(0xF5, t);
+ superio_outb(cr_wdt_control, t);
break;
default:
break;
}
- t = superio_inb(0xF6);
+ t = superio_inb(cr_wdt_timeout);
if (t != 0) {
pr_info("Watchdog already running. Resetting timeout to %d sec\n",
WATCHDOG_TIMEOUT);
- superio_outb(0xf6, WATCHDOG_TIMEOUT);
+ superio_outb(cr_wdt_timeout, WATCHDOG_TIMEOUT);
}
/* set second mode & disable keyboard turning off watchdog */
- t = superio_inb(0xF5) & ~0x0C;
- superio_outb(0xF5, t);
+ t = superio_inb(cr_wdt_control) & ~0x0C;
+ superio_outb(cr_wdt_control, t);
/* disable keyboard & mouse turning off watchdog */
t = superio_inb(0xF7) & ~0xC0;
@@ -171,7 +192,7 @@ static int wdt_set_time(unsigned int timeout)
{
superio_enter();
superio_select(W83627HF_LD_WDT);
- superio_outb(0xF6, timeout);
+ superio_outb(cr_wdt_timeout, timeout);
superio_exit();
return 0;
}
@@ -200,7 +221,7 @@ static unsigned int wdt_get_time(struct watchdog_device *wdog)
superio_enter();
superio_select(W83627HF_LD_WDT);
- timeleft = superio_inb(0xF6);
+ timeleft = superio_inb(cr_wdt_timeout);
superio_exit();
return timeleft;
@@ -258,6 +279,9 @@ static int wdt_find(int addr)
u8 val;
int ret = -ENODEV;
+ cr_wdt_timeout = W83627HF_WDT_TIMEOUT;
+ cr_wdt_control = W83627HF_WDT_CONTROL;
+
superio_enter();
superio_select(W83627HF_LD_WDT);
val = superio_inb(0x20);
@@ -265,6 +289,16 @@ static int wdt_find(int addr)
case W83627HF_ID:
ret = w83627hf;
break;
+ case W83697HF_ID:
+ ret = w83697hf;
+ cr_wdt_timeout = W83697HF_WDT_TIMEOUT;
+ cr_wdt_control = W83697HF_WDT_CONTROL;
+ break;
+ case W83697UG_ID:
+ ret = w83697ug;
+ cr_wdt_timeout = W83697HF_WDT_TIMEOUT;
+ cr_wdt_control = W83697HF_WDT_CONTROL;
+ break;
case W83637HF_ID:
ret = w83637hf;
break;
@@ -309,6 +343,8 @@ static int __init wdt_init(void)
int chip;
const char * const chip_name[] = {
"W83627HF",
+ "W83697HF",
+ "W83697UG",
"W83637HF",
"W83627THF",
"W83687THF",
--
1.7.9.7
--
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