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[PATCH V2] watchdog: f71808e_wdt: Add F81866 support

Started by"Ji-Ze Hong (Peter Hong)" <hpeter@gmail.com>
First post2016-06-08 09:00 +0200
Last post2016-06-08 15:50 +0200
Articles 2 — 2 participants

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  [PATCH V2] watchdog: f71808e_wdt: Add F81866 support "Ji-Ze Hong (Peter Hong)" <hpeter@gmail.com> - 2016-06-08 09:00 +0200
    Re: [PATCH V2] watchdog: f71808e_wdt: Add F81866 support Guenter Roeck <linux@roeck-us.net> - 2016-06-08 15:50 +0200

#1416936 — [PATCH V2] watchdog: f71808e_wdt: Add F81866 support

From"Ji-Ze Hong (Peter Hong)" <hpeter@gmail.com>
Date2016-06-08 09:00 +0200
Subject[PATCH V2] watchdog: f71808e_wdt: Add F81866 support
Message-ID<rHFD4-58f-11@gated-at.bofh.it>
Adds watchdog enable support for Fintek F81866 Super-IO chip to
Fintek wdt driver (f71808e_wdt)

Tested and verified on iBASE MI802 Industrial PC

Datasheet references:
http://www.alldatasheet.com/datasheet-pdf/pdf/459085/FINTEK/F81866AD-I.html

Suggested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>
---
Change Log:
V2:
	1. Put the newer F81866 registers in order with olds.
	2. Set the register from constant value to BIT() marco

 drivers/watchdog/f71808e_wdt.c | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c
index d4ba262..3b2de11 100644
--- a/drivers/watchdog/f71808e_wdt.c
+++ b/drivers/watchdog/f71808e_wdt.c
@@ -45,9 +45,11 @@
 #define SIO_REG_DEVREV		0x22	/* Device revision */
 #define SIO_REG_MANID		0x23	/* Fintek ID (2 bytes) */
 #define SIO_REG_ROM_ADDR_SEL	0x27	/* ROM address select */
+#define SIO_F81866_REG_PORT_SEL	0x27	/* F81866 Multi-Function Register */
 #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 */
+#define SIO_F81866_REG_GPIO1	0x2c	/* F81866 GPIO1 Enable Register */
 #define SIO_REG_ENABLE		0x30	/* Logical device enable */
 #define SIO_REG_ADDR		0x60	/* Logical device address (2 bytes) */
 
@@ -60,6 +62,7 @@
 #define SIO_F71882_ID		0x0541	/* Chipset ID */
 #define SIO_F71889_ID		0x0723	/* Chipset ID */
 #define SIO_F81865_ID		0x0704	/* Chipset ID */
+#define SIO_F81866_ID		0x1010	/* Chipset ID */
 
 #define F71808FG_REG_WDO_CONF		0xf0
 #define F71808FG_REG_WDT_CONF		0xf5
@@ -116,7 +119,8 @@ module_param(start_withtimeout, uint, 0);
 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, f71869, f71882fg, f71889fg, f81865 };
+enum chips { f71808fg, f71858fg, f71862fg, f71869, f71882fg, f71889fg, f81865,
+	     f81866};
 
 static const char *f71808e_names[] = {
 	"f71808fg",
@@ -126,6 +130,7 @@ static const char *f71808e_names[] = {
 	"f71882fg",
 	"f71889fg",
 	"f81865",
+	"f81866",
 };
 
 /* Super-I/O Function prototypes */
@@ -370,6 +375,22 @@ static int watchdog_start(void)
 		superio_clear_bit(watchdog.sioaddr, SIO_REG_MFUNCT3, 5);
 		break;
 
+	case f81866:
+		/* Set pin 70 to WDTRST# */
+		superio_clear_bit(watchdog.sioaddr, SIO_F81866_REG_PORT_SEL,
+				  BIT(3) | BIT(0));
+		superio_set_bit(watchdog.sioaddr, SIO_F81866_REG_PORT_SEL,
+				BIT(2));
+		/*
+		 * GPIO1 Control Register when 27h BIT3:2 = 01 & BIT0 = 0.
+		 * The PIN 70(GPIO15/WDTRST) is controlled by 2Ch:
+		 *     BIT5: 0 -> WDTRST#
+		 *           1 -> GPIO15
+		 */
+		superio_clear_bit(watchdog.sioaddr, SIO_F81866_REG_GPIO1,
+				  BIT(5));
+		break;
+
 	default:
 		/*
 		 * 'default' label to shut up the compiler and catch
@@ -382,7 +403,7 @@ static int watchdog_start(void)
 	superio_select(watchdog.sioaddr, SIO_F71808FG_LD_WDT);
 	superio_set_bit(watchdog.sioaddr, SIO_REG_ENABLE, 0);
 
-	if (watchdog.type == f81865)
+	if (watchdog.type == f81865 || watchdog.type == f81866)
 		superio_set_bit(watchdog.sioaddr, F81865_REG_WDO_CONF,
 				F81865_FLAG_WDOUT_EN);
 	else
@@ -788,6 +809,9 @@ static int __init f71808e_find(int sioaddr)
 	case SIO_F81865_ID:
 		watchdog.type = f81865;
 		break;
+	case SIO_F81866_ID:
+		watchdog.type = f81866;
+		break;
 	default:
 		pr_info("Unrecognized Fintek device: %04x\n",
 			(unsigned int)devid);
-- 
1.9.1

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#1417447

FromGuenter Roeck <linux@roeck-us.net>
Date2016-06-08 15:50 +0200
Message-ID<rHM1Q-Pq-33@gated-at.bofh.it>
In reply to#1416936
On 06/07/2016 11:57 PM, Ji-Ze Hong (Peter Hong) wrote:
> Adds watchdog enable support for Fintek F81866 Super-IO chip to
> Fintek wdt driver (f71808e_wdt)
>
> Tested and verified on iBASE MI802 Industrial PC
>
> Datasheet references:
> http://www.alldatasheet.com/datasheet-pdf/pdf/459085/FINTEK/F81866AD-I.html
>
> Suggested-by: Guenter Roeck <linux@roeck-us.net>
> Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@gmail.com>

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

> ---
> Change Log:
> V2:
> 	1. Put the newer F81866 registers in order with olds.
> 	2. Set the register from constant value to BIT() marco
>
>   drivers/watchdog/f71808e_wdt.c | 28 ++++++++++++++++++++++++++--
>   1 file changed, 26 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c
> index d4ba262..3b2de11 100644
> --- a/drivers/watchdog/f71808e_wdt.c
> +++ b/drivers/watchdog/f71808e_wdt.c
> @@ -45,9 +45,11 @@
>   #define SIO_REG_DEVREV		0x22	/* Device revision */
>   #define SIO_REG_MANID		0x23	/* Fintek ID (2 bytes) */
>   #define SIO_REG_ROM_ADDR_SEL	0x27	/* ROM address select */
> +#define SIO_F81866_REG_PORT_SEL	0x27	/* F81866 Multi-Function Register */
>   #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 */
> +#define SIO_F81866_REG_GPIO1	0x2c	/* F81866 GPIO1 Enable Register */
>   #define SIO_REG_ENABLE		0x30	/* Logical device enable */
>   #define SIO_REG_ADDR		0x60	/* Logical device address (2 bytes) */
>
> @@ -60,6 +62,7 @@
>   #define SIO_F71882_ID		0x0541	/* Chipset ID */
>   #define SIO_F71889_ID		0x0723	/* Chipset ID */
>   #define SIO_F81865_ID		0x0704	/* Chipset ID */
> +#define SIO_F81866_ID		0x1010	/* Chipset ID */
>
>   #define F71808FG_REG_WDO_CONF		0xf0
>   #define F71808FG_REG_WDT_CONF		0xf5
> @@ -116,7 +119,8 @@ module_param(start_withtimeout, uint, 0);
>   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, f71869, f71882fg, f71889fg, f81865 };
> +enum chips { f71808fg, f71858fg, f71862fg, f71869, f71882fg, f71889fg, f81865,
> +	     f81866};
>
>   static const char *f71808e_names[] = {
>   	"f71808fg",
> @@ -126,6 +130,7 @@ static const char *f71808e_names[] = {
>   	"f71882fg",
>   	"f71889fg",
>   	"f81865",
> +	"f81866",
>   };
>
>   /* Super-I/O Function prototypes */
> @@ -370,6 +375,22 @@ static int watchdog_start(void)
>   		superio_clear_bit(watchdog.sioaddr, SIO_REG_MFUNCT3, 5);
>   		break;
>
> +	case f81866:
> +		/* Set pin 70 to WDTRST# */
> +		superio_clear_bit(watchdog.sioaddr, SIO_F81866_REG_PORT_SEL,
> +				  BIT(3) | BIT(0));
> +		superio_set_bit(watchdog.sioaddr, SIO_F81866_REG_PORT_SEL,
> +				BIT(2));
> +		/*
> +		 * GPIO1 Control Register when 27h BIT3:2 = 01 & BIT0 = 0.
> +		 * The PIN 70(GPIO15/WDTRST) is controlled by 2Ch:
> +		 *     BIT5: 0 -> WDTRST#
> +		 *           1 -> GPIO15
> +		 */
> +		superio_clear_bit(watchdog.sioaddr, SIO_F81866_REG_GPIO1,
> +				  BIT(5));
> +		break;
> +
>   	default:
>   		/*
>   		 * 'default' label to shut up the compiler and catch
> @@ -382,7 +403,7 @@ static int watchdog_start(void)
>   	superio_select(watchdog.sioaddr, SIO_F71808FG_LD_WDT);
>   	superio_set_bit(watchdog.sioaddr, SIO_REG_ENABLE, 0);
>
> -	if (watchdog.type == f81865)
> +	if (watchdog.type == f81865 || watchdog.type == f81866)
>   		superio_set_bit(watchdog.sioaddr, F81865_REG_WDO_CONF,
>   				F81865_FLAG_WDOUT_EN);
>   	else
> @@ -788,6 +809,9 @@ static int __init f71808e_find(int sioaddr)
>   	case SIO_F81865_ID:
>   		watchdog.type = f81865;
>   		break;
> +	case SIO_F81866_ID:
> +		watchdog.type = f81866;
> +		break;
>   	default:
>   		pr_info("Unrecognized Fintek device: %04x\n",
>   			(unsigned int)devid);
>

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