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* [PATCH] watchdog: f71808e_wdt: Add F81803 support
@ 2019-09-12 17:55 Jaret Cantu
  2019-09-12 18:50 ` Guenter Roeck
  0 siblings, 1 reply; 3+ messages in thread
From: Jaret Cantu @ 2019-09-12 17:55 UTC (permalink / raw)
  To: Wim Van Sebroeck, Guenter Roeck; +Cc: linux-watchdog, linux-kernel

This adds watchdog support for the Fintek F81803 Super I/O chip.

Testing was done on the Seneca XK-QUAD.

Signed-off-by: Jaret Cantu <jaret.cantu@timesys.com>
---
 drivers/watchdog/Kconfig       |  4 ++--
 drivers/watchdog/f71808e_wdt.c | 17 ++++++++++++++++-
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 8188963a405b..781ff835f2a4 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1046,8 +1046,8 @@ config F71808E_WDT
 	depends on X86
 	help
 	  This is the driver for the hardware watchdog on the Fintek F71808E,
-	  F71862FG, F71868, F71869, F71882FG, F71889FG, F81865 and F81866
-	  Super I/O controllers.
+	  F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
+	  F81866 Super I/O controllers.
 
 	  You can compile this driver directly into the kernel, or use
 	  it as a module.  The module will be called f71808e_wdt.
diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c
index ff5cf1b48a4d..e46104c2fd94 100644
--- a/drivers/watchdog/f71808e_wdt.c
+++ b/drivers/watchdog/f71808e_wdt.c
@@ -31,8 +31,10 @@
 #define SIO_REG_DEVID		0x20	/* Device ID (2 bytes) */
 #define SIO_REG_DEVREV		0x22	/* Device revision */
 #define SIO_REG_MANID		0x23	/* Fintek ID (2 bytes) */
+#define SIO_REG_CLOCK_SEL	0x26	/* Clock select */
 #define SIO_REG_ROM_ADDR_SEL	0x27	/* ROM address select */
 #define SIO_F81866_REG_PORT_SEL	0x27	/* F81866 Multi-Function Register */
+#define SIO_REG_TSI_LEVEL_SEL	0x28	/* TSI Level select */
 #define SIO_REG_MFUNCT1		0x29	/* Multi function select 1 */
 #define SIO_REG_MFUNCT2		0x2a	/* Multi function select 2 */
 #define SIO_REG_MFUNCT3		0x2b	/* Multi function select 3 */
@@ -49,6 +51,7 @@
 #define SIO_F71869A_ID		0x1007	/* Chipset ID */
 #define SIO_F71882_ID		0x0541	/* Chipset ID */
 #define SIO_F71889_ID		0x0723	/* Chipset ID */
+#define SIO_F81803_ID		0x1210	/* Chipset ID */
 #define SIO_F81865_ID		0x0704	/* Chipset ID */
 #define SIO_F81866_ID		0x1010	/* Chipset ID */
 
@@ -108,7 +111,7 @@ MODULE_PARM_DESC(start_withtimeout, "Start watchdog timer on module load with"
 	" given initial timeout. Zero (default) disables this feature.");
 
 enum chips { f71808fg, f71858fg, f71862fg, f71868, f71869, f71882fg, f71889fg,
-	     f81865, f81866};
+	     f81803, f81865, f81866};
 
 static const char *f71808e_names[] = {
 	"f71808fg",
@@ -118,6 +121,7 @@ static const char *f71808e_names[] = {
 	"f71869",
 	"f71882fg",
 	"f71889fg",
+	"f81803",
 	"f81865",
 	"f81866",
 };
@@ -370,6 +374,14 @@ static int watchdog_start(void)
 			superio_inb(watchdog.sioaddr, SIO_REG_MFUNCT3) & 0xcf);
 		break;
 
+	case f81803:
+		/* Enable TSI Level register bank */
+		superio_clear_bit(watchdog.sioaddr, SIO_REG_CLOCK_SEL, 3);
+		/* Set pin 27 to WDTRST# */
+		superio_outb(watchdog.sioaddr, SIO_REG_TSI_LEVEL_SEL, 0x5f &
+			superio_inb(watchdog.sioaddr, SIO_REG_TSI_LEVEL_SEL));
+		break;
+
 	case f81865:
 		/* Set pin 70 to WDTRST# */
 		superio_clear_bit(watchdog.sioaddr, SIO_REG_MFUNCT3, 5);
@@ -809,6 +821,9 @@ static int __init f71808e_find(int sioaddr)
 		/* Confirmed (by datasheet) not to have a watchdog. */
 		err = -ENODEV;
 		goto exit;
+	case SIO_F81803_ID:
+		watchdog.type = f81803;
+		break;
 	case SIO_F81865_ID:
 		watchdog.type = f81865;
 		break;
-- 
2.11.0


^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH] watchdog: f71808e_wdt: Add F81803 support
  2019-09-12 17:55 [PATCH] watchdog: f71808e_wdt: Add F81803 support Jaret Cantu
@ 2019-09-12 18:50 ` Guenter Roeck
  2019-09-12 22:55   ` Jaret Cantu
  0 siblings, 1 reply; 3+ messages in thread
From: Guenter Roeck @ 2019-09-12 18:50 UTC (permalink / raw)
  To: Jaret Cantu; +Cc: Wim Van Sebroeck, linux-watchdog, linux-kernel

On Thu, Sep 12, 2019 at 01:55:50PM -0400, Jaret Cantu wrote:
> This adds watchdog support for the Fintek F81803 Super I/O chip.
> 
> Testing was done on the Seneca XK-QUAD.
> 
> Signed-off-by: Jaret Cantu <jaret.cantu@timesys.com>

Since there is no datasheet, we can only hope that this works
for other platforms using the same chip. Nothing we can do
about that, so

Reviewed-by: Guenter Roeck <linux@roeck-us.net>

> ---
>  drivers/watchdog/Kconfig       |  4 ++--
>  drivers/watchdog/f71808e_wdt.c | 17 ++++++++++++++++-
>  2 files changed, 18 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
> index 8188963a405b..781ff835f2a4 100644
> --- a/drivers/watchdog/Kconfig
> +++ b/drivers/watchdog/Kconfig
> @@ -1046,8 +1046,8 @@ config F71808E_WDT
>  	depends on X86
>  	help
>  	  This is the driver for the hardware watchdog on the Fintek F71808E,
> -	  F71862FG, F71868, F71869, F71882FG, F71889FG, F81865 and F81866
> -	  Super I/O controllers.
> +	  F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
> +	  F81866 Super I/O controllers.
>  
>  	  You can compile this driver directly into the kernel, or use
>  	  it as a module.  The module will be called f71808e_wdt.
> diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c
> index ff5cf1b48a4d..e46104c2fd94 100644
> --- a/drivers/watchdog/f71808e_wdt.c
> +++ b/drivers/watchdog/f71808e_wdt.c
> @@ -31,8 +31,10 @@
>  #define SIO_REG_DEVID		0x20	/* Device ID (2 bytes) */
>  #define SIO_REG_DEVREV		0x22	/* Device revision */
>  #define SIO_REG_MANID		0x23	/* Fintek ID (2 bytes) */
> +#define SIO_REG_CLOCK_SEL	0x26	/* Clock select */
>  #define SIO_REG_ROM_ADDR_SEL	0x27	/* ROM address select */
>  #define SIO_F81866_REG_PORT_SEL	0x27	/* F81866 Multi-Function Register */
> +#define SIO_REG_TSI_LEVEL_SEL	0x28	/* TSI Level select */
>  #define SIO_REG_MFUNCT1		0x29	/* Multi function select 1 */
>  #define SIO_REG_MFUNCT2		0x2a	/* Multi function select 2 */
>  #define SIO_REG_MFUNCT3		0x2b	/* Multi function select 3 */
> @@ -49,6 +51,7 @@
>  #define SIO_F71869A_ID		0x1007	/* Chipset ID */
>  #define SIO_F71882_ID		0x0541	/* Chipset ID */
>  #define SIO_F71889_ID		0x0723	/* Chipset ID */
> +#define SIO_F81803_ID		0x1210	/* Chipset ID */
>  #define SIO_F81865_ID		0x0704	/* Chipset ID */
>  #define SIO_F81866_ID		0x1010	/* Chipset ID */
>  
> @@ -108,7 +111,7 @@ MODULE_PARM_DESC(start_withtimeout, "Start watchdog timer on module load with"
>  	" given initial timeout. Zero (default) disables this feature.");
>  
>  enum chips { f71808fg, f71858fg, f71862fg, f71868, f71869, f71882fg, f71889fg,
> -	     f81865, f81866};
> +	     f81803, f81865, f81866};
>  
>  static const char *f71808e_names[] = {
>  	"f71808fg",
> @@ -118,6 +121,7 @@ static const char *f71808e_names[] = {
>  	"f71869",
>  	"f71882fg",
>  	"f71889fg",
> +	"f81803",
>  	"f81865",
>  	"f81866",
>  };
> @@ -370,6 +374,14 @@ static int watchdog_start(void)
>  			superio_inb(watchdog.sioaddr, SIO_REG_MFUNCT3) & 0xcf);
>  		break;
>  
> +	case f81803:
> +		/* Enable TSI Level register bank */
> +		superio_clear_bit(watchdog.sioaddr, SIO_REG_CLOCK_SEL, 3);
> +		/* Set pin 27 to WDTRST# */
> +		superio_outb(watchdog.sioaddr, SIO_REG_TSI_LEVEL_SEL, 0x5f &
> +			superio_inb(watchdog.sioaddr, SIO_REG_TSI_LEVEL_SEL));
> +		break;
> +
>  	case f81865:
>  		/* Set pin 70 to WDTRST# */
>  		superio_clear_bit(watchdog.sioaddr, SIO_REG_MFUNCT3, 5);
> @@ -809,6 +821,9 @@ static int __init f71808e_find(int sioaddr)
>  		/* Confirmed (by datasheet) not to have a watchdog. */
>  		err = -ENODEV;
>  		goto exit;
> +	case SIO_F81803_ID:
> +		watchdog.type = f81803;
> +		break;
>  	case SIO_F81865_ID:
>  		watchdog.type = f81865;
>  		break;
> -- 
> 2.11.0
> 

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH] watchdog: f71808e_wdt: Add F81803 support
  2019-09-12 18:50 ` Guenter Roeck
@ 2019-09-12 22:55   ` Jaret Cantu
  0 siblings, 0 replies; 3+ messages in thread
From: Jaret Cantu @ 2019-09-12 22:55 UTC (permalink / raw)
  To: Guenter Roeck; +Cc: Wim Van Sebroeck, linux-watchdog, linux-kernel

On 9/12/19 2:50 PM, Guenter Roeck wrote:
> On Thu, Sep 12, 2019 at 01:55:50PM -0400, Jaret Cantu wrote:
>> This adds watchdog support for the Fintek F81803 Super I/O chip.
>>
>> Testing was done on the Seneca XK-QUAD.
>>
>> Signed-off-by: Jaret Cantu <jaret.cantu@timesys.com>
> 
> Since there is no datasheet, we can only hope that this works
> for other platforms using the same chip. Nothing we can do
> about that, so

I did get the register descriptions after hounding the vendor's support 
team for a good long while, which is how I was able to get the watchdog 
working in the first place.  Nothing publicly available, however.

The only real difference between this part and others in the family is 
requiring a bank select before setting the WDTRST pin.  (And the 
registers/bits which have to be twiddled to do so, of course.)

> 
> Reviewed-by: Guenter Roeck <linux@roeck-us.net>
> 
>> ---
>>   drivers/watchdog/Kconfig       |  4 ++--
>>   drivers/watchdog/f71808e_wdt.c | 17 ++++++++++++++++-
>>   2 files changed, 18 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
>> index 8188963a405b..781ff835f2a4 100644
>> --- a/drivers/watchdog/Kconfig
>> +++ b/drivers/watchdog/Kconfig
>> @@ -1046,8 +1046,8 @@ config F71808E_WDT
>>   	depends on X86
>>   	help
>>   	  This is the driver for the hardware watchdog on the Fintek F71808E,
>> -	  F71862FG, F71868, F71869, F71882FG, F71889FG, F81865 and F81866
>> -	  Super I/O controllers.
>> +	  F71862FG, F71868, F71869, F71882FG, F71889FG, F81803, F81865, and
>> +	  F81866 Super I/O controllers.
>>   
>>   	  You can compile this driver directly into the kernel, or use
>>   	  it as a module.  The module will be called f71808e_wdt.
>> diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c
>> index ff5cf1b48a4d..e46104c2fd94 100644
>> --- a/drivers/watchdog/f71808e_wdt.c
>> +++ b/drivers/watchdog/f71808e_wdt.c
>> @@ -31,8 +31,10 @@
>>   #define SIO_REG_DEVID		0x20	/* Device ID (2 bytes) */
>>   #define SIO_REG_DEVREV		0x22	/* Device revision */
>>   #define SIO_REG_MANID		0x23	/* Fintek ID (2 bytes) */
>> +#define SIO_REG_CLOCK_SEL	0x26	/* Clock select */
>>   #define SIO_REG_ROM_ADDR_SEL	0x27	/* ROM address select */
>>   #define SIO_F81866_REG_PORT_SEL	0x27	/* F81866 Multi-Function Register */
>> +#define SIO_REG_TSI_LEVEL_SEL	0x28	/* TSI Level select */
>>   #define SIO_REG_MFUNCT1		0x29	/* Multi function select 1 */
>>   #define SIO_REG_MFUNCT2		0x2a	/* Multi function select 2 */
>>   #define SIO_REG_MFUNCT3		0x2b	/* Multi function select 3 */
>> @@ -49,6 +51,7 @@
>>   #define SIO_F71869A_ID		0x1007	/* Chipset ID */
>>   #define SIO_F71882_ID		0x0541	/* Chipset ID */
>>   #define SIO_F71889_ID		0x0723	/* Chipset ID */
>> +#define SIO_F81803_ID		0x1210	/* Chipset ID */
>>   #define SIO_F81865_ID		0x0704	/* Chipset ID */
>>   #define SIO_F81866_ID		0x1010	/* Chipset ID */
>>   
>> @@ -108,7 +111,7 @@ MODULE_PARM_DESC(start_withtimeout, "Start watchdog timer on module load with"
>>   	" given initial timeout. Zero (default) disables this feature.");
>>   
>>   enum chips { f71808fg, f71858fg, f71862fg, f71868, f71869, f71882fg, f71889fg,
>> -	     f81865, f81866};
>> +	     f81803, f81865, f81866};
>>   
>>   static const char *f71808e_names[] = {
>>   	"f71808fg",
>> @@ -118,6 +121,7 @@ static const char *f71808e_names[] = {
>>   	"f71869",
>>   	"f71882fg",
>>   	"f71889fg",
>> +	"f81803",
>>   	"f81865",
>>   	"f81866",
>>   };
>> @@ -370,6 +374,14 @@ static int watchdog_start(void)
>>   			superio_inb(watchdog.sioaddr, SIO_REG_MFUNCT3) & 0xcf);
>>   		break;
>>   
>> +	case f81803:
>> +		/* Enable TSI Level register bank */
>> +		superio_clear_bit(watchdog.sioaddr, SIO_REG_CLOCK_SEL, 3);
>> +		/* Set pin 27 to WDTRST# */
>> +		superio_outb(watchdog.sioaddr, SIO_REG_TSI_LEVEL_SEL, 0x5f &
>> +			superio_inb(watchdog.sioaddr, SIO_REG_TSI_LEVEL_SEL));
>> +		break;
>> +
>>   	case f81865:
>>   		/* Set pin 70 to WDTRST# */
>>   		superio_clear_bit(watchdog.sioaddr, SIO_REG_MFUNCT3, 5);
>> @@ -809,6 +821,9 @@ static int __init f71808e_find(int sioaddr)
>>   		/* Confirmed (by datasheet) not to have a watchdog. */
>>   		err = -ENODEV;
>>   		goto exit;
>> +	case SIO_F81803_ID:
>> +		watchdog.type = f81803;
>> +		break;
>>   	case SIO_F81865_ID:
>>   		watchdog.type = f81865;
>>   		break;
>> -- 
>> 2.11.0
>>

^ permalink raw reply	[flat|nested] 3+ messages in thread

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Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2019-09-12 17:55 [PATCH] watchdog: f71808e_wdt: Add F81803 support Jaret Cantu
2019-09-12 18:50 ` Guenter Roeck
2019-09-12 22:55   ` Jaret Cantu

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