watchdog: w83627hf: Added NCT6102D support.

As used in (and tested on) the ASRock IMB-150 board. Implementation is
identical to other NCT chips, just with different registers.

Signed-off-by: Rob Kramer <rob@solution-space.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 0f6d851..b5f39b7 100644 (file)
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1142,6 +1142,7 @@ config W83627HF_WDT
                NCT6779
                NCT6791
                NCT6792
+               NCT6102D/04D/06D
 
          This watchdog simply watches your kernel to make sure it doesn't
          freeze, and if it does, it reboots your computer after a certain

diff --git a/drivers/watchdog/w83627hf_wdt.c b/drivers/watchdog/w83627hf_wdt.c
index cab14bc..09e8003 100644 (file)
--- a/drivers/watchdog/w83627hf_wdt.c
+++ b/drivers/watchdog/w83627hf_wdt.c
@@ -45,10 +45,11 @@
 static int wdt_io;
 static int cr_wdt_timeout;     /* WDT timeout register */
 static int cr_wdt_control;     /* WDT control register */
+static int cr_wdt_csr;         /* WDT control & status register */
 
 enum chips { w83627hf, w83627s, w83697hf, w83697ug, w83637hf, w83627thf,
             w83687thf, w83627ehf, w83627dhg, w83627uhg, w83667hg, w83627dhg_p,
-            w83667hg_b, nct6775, nct6776, nct6779, nct6791, nct6792 };
+            w83667hg_b, nct6775, nct6776, nct6779, nct6791, nct6792, nct6102 };
 
 static int timeout;                    /* in seconds */
 module_param(timeout, int, 0);
@@ -92,15 +93,21 @@ MODULE_PARM_DESC(early_disable, "Disable watchdog at boot time (default=0)");
 #define W83667HG_B_ID          0xb3
 #define NCT6775_ID             0xb4
 #define NCT6776_ID             0xc3
+#define NCT6102_ID             0xc4
 #define NCT6779_ID             0xc5
 #define NCT6791_ID             0xc8
 #define NCT6792_ID             0xc9
 
 #define W83627HF_WDT_TIMEOUT   0xf6
 #define W83697HF_WDT_TIMEOUT   0xf4
+#define NCT6102D_WDT_TIMEOUT   0xf1
 
 #define W83627HF_WDT_CONTROL   0xf5
 #define W83697HF_WDT_CONTROL   0xf3
+#define NCT6102D_WDT_CONTROL   0xf0
+
+#define W836X7HF_WDT_CSR       0xf7
+#define NCT6102D_WDT_CSR       0xf2
 
 static void superio_outb(int reg, int val)
 {
@@ -197,6 +204,7 @@ static int w83627hf_init(struct watchdog_device *wdog, enum chips chip)
        case nct6779:
        case nct6791:
        case nct6792:
+       case nct6102:
                /*
                 * These chips have a fixed WDTO# output pin (W83627UHG),
                 * or support more than one WDTO# output pin.
@@ -229,8 +237,8 @@ static int w83627hf_init(struct watchdog_device *wdog, enum chips chip)
        superio_outb(cr_wdt_control, t);
 
        /* reset trigger, disable keyboard & mouse turning off watchdog */
-       t = superio_inb(0xF7) & ~0xD0;
-       superio_outb(0xF7, t);
+       t = superio_inb(cr_wdt_csr) & ~0xD0;
+       superio_outb(cr_wdt_csr, t);
 
        superio_exit();
 
@@ -322,6 +330,7 @@ static int wdt_find(int addr)
 
        cr_wdt_timeout = W83627HF_WDT_TIMEOUT;
        cr_wdt_control = W83627HF_WDT_CONTROL;
+       cr_wdt_csr = W836X7HF_WDT_CSR;
 
        ret = superio_enter();
        if (ret)
@@ -387,6 +396,12 @@ static int wdt_find(int addr)
        case NCT6792_ID:
                ret = nct6792;
                break;
+       case NCT6102_ID:
+               ret = nct6102;
+               cr_wdt_timeout = NCT6102D_WDT_TIMEOUT;
+               cr_wdt_control = NCT6102D_WDT_CONTROL;
+               cr_wdt_csr = NCT6102D_WDT_CSR;
+               break;
        case 0xff:
                ret = -ENODEV;
                break;
@@ -422,6 +437,7 @@ static int __init wdt_init(void)
                "NCT6779",
                "NCT6791",
                "NCT6792",
+               "NCT6102",
        };
 
        wdt_io = 0x2e;