Re: [PATCH 1/4] hwmon: f71882fg: Add support for the Fintek F71808E

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On Wed, Mar 24, 2010 at 09:25:08AM +0100, Hans de Goede wrote:
> See comments inline.
> 
> On 03/24/2010 12:12 AM, Giel van Schijndel wrote:
>> Allow device probing to recognise the Fintek F71808E.
>> 
>> Sysfs interface:
>>   * Fan/pwm control is the same as for F71889FG
>>   * Temperature and voltage sensor handling is largely the same as for
>>     the F71889FG
>>    - Has one temperature sensor less (doesn't have temp3)
>>    - Misses one voltage sensor (doesn't have V6, thus in6_input refers to
>>      what in7_input refers for F71889FG)
>> 
>> For the purpose of the sysfs interface fxxxx_in_temp_attr[] is split up
>> such that it can largely be reused.
>> ---
>>   Documentation/hwmon/f71882fg |    4 ++
>>   drivers/hwmon/Kconfig        |    6 ++--
>>   drivers/hwmon/f71882fg.c     |   80 +++++++++++++++++++++++++++++++++++++----
>>   3 files changed, 79 insertions(+), 11 deletions(-)
>> 
>> diff --git a/drivers/hwmon/f71882fg.c b/drivers/hwmon/f71882fg.c
>> index 25e1cad..b290b87 100644
>> --- a/drivers/hwmon/f71882fg.c
>> +++ b/drivers/hwmon/f71882fg.c
>> @@ -1974,8 +2002,27 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
>>   			/* fall through! */
>>   		case f71862fg:
>>   			err = f71882fg_create_sysfs_files(pdev,
>> -					fxxxx_in_temp_attr,
>> -					ARRAY_SIZE(fxxxx_in_temp_attr));
>> +					f71862_temp_attr,
>> +					ARRAY_SIZE(f71862_temp_attr));
>> +			if (err)
>> +				goto exit_unregister_sysfs;
>> +			err = f71882fg_create_sysfs_files(pdev,
>> +					fxxxx_in_attr,
>> +					ARRAY_SIZE(fxxxx_in_attr));
>> +			if (err)
>> +				goto exit_unregister_sysfs;
>> +			/* fall through! */
> 
> Ugh, please don't fall through, and then have an if below to only do
> some parts of the case falling through. This is quite confusing
> at first I thought your code was buggy I had to read it twice to notice
> the if. Instead just duplicate the following lines:
>> +			err = f71882fg_create_sysfs_files(pdev,
>> +					fxxxx_temp_attr,
>> +					ARRAY_SIZE(fxxxx_temp_attr));
> In the f71862fg case, end the f71862fg case with a break and remove
> the if test from the f71808fg case.
> 
>> +		case f71808fg:
>> +			if (data->type == f71808fg) {
>> +				err = f71882fg_create_sysfs_files(pdev,
>> +						f71808_in_attr,
>> +						ARRAY_SIZE(f71808_in_attr));
>> +				if (err)
>> +					goto exit_unregister_sysfs;
>> +			}
>> +			err = f71882fg_create_sysfs_files(pdev,
>> +					fxxxx_temp_attr,
>> +					ARRAY_SIZE(fxxxx_temp_attr));
>>   			break;
>>   		case f8000:
>>   			err = f71882fg_create_sysfs_files(pdev,
>> @@ -2126,8 +2175,20 @@ static int f71882fg_remove(struct platform_device *pdev)
>>   			/* fall through! */
>>   		case f71862fg:
>>   			f71882fg_remove_sysfs_files(pdev,
>> -					fxxxx_in_temp_attr,
>> -					ARRAY_SIZE(fxxxx_in_temp_attr));
>> +					f71862_temp_attr,
>> +					ARRAY_SIZE(f71862_temp_attr));
>> +			f71882fg_remove_sysfs_files(pdev,
>> +					fxxxx_in_attr,
>> +					ARRAY_SIZE(fxxxx_in_attr));
>> +			/* fall through! */
> 
> Idem.

Ack. New and improved patch follows this line.
========================================================================
hwmon: f71882fg: Add support for the Fintek F71808E

Allow device probing to recognise the Fintek F71808E.

Sysfs interface:
 * Fan/pwm control is the same as for F71889FG
 * Temperature and voltage sensor handling is largely the same as for
   the F71889FG
  - Has one temperature sensor less (doesn't have temp3)
  - Misses one voltage sensor (doesn't have V6, thus in6_input refers to
    what in7_input refers for F71889FG)

For the purpose of the sysfs interface fxxxx_in_temp_attr[] is split up
such that it can largely be reused.

Signed-off-by: Giel van Schijndel <me@xxxxxxxxx>
---
 Documentation/hwmon/f71882fg |    4 ++
 drivers/hwmon/Kconfig        |    6 ++--
 drivers/hwmon/f71882fg.c     |   83 ++++++++++++++++++++++++++++++++++++++----
 3 files changed, 82 insertions(+), 11 deletions(-)

diff --git a/Documentation/hwmon/f71882fg b/Documentation/hwmon/f71882fg
index a7952c2..1a07fd6 100644
--- a/Documentation/hwmon/f71882fg
+++ b/Documentation/hwmon/f71882fg
@@ -2,6 +2,10 @@ Kernel driver f71882fg
 ======================
 
 Supported chips:
+  * Fintek F71808E
+    Prefix: 'f71808fg'
+    Addresses scanned: none, address read from Super I/O config space
+    Datasheet: Not public
   * Fintek F71858FG
     Prefix: 'f71858fg'
     Addresses scanned: none, address read from Super I/O config space
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index e4595e6..7053608 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -332,11 +332,11 @@ config SENSORS_F71805F
 	  will be called f71805f.
 
 config SENSORS_F71882FG
-	tristate "Fintek F71858FG, F71862FG, F71882FG, F71889FG and F8000"
+	tristate "Fintek F71808E, F71858FG, F71862FG, F71882FG, F71889FG and F8000"
 	depends on EXPERIMENTAL
 	help
-	  If you say yes here you get support for hardware monitoring
-	  features of the Fintek F71858FG, F71862FG/71863FG, F71882FG/F71883FG,
+	  If you say yes here you get support for hardware monitoring features
+	  of the Fintek F71808E, F71858FG, F71862FG/71863FG, F71882FG/F71883FG,
 	  F71889FG and F8000 Super-I/O chips.
 
 	  This driver can also be built as a module.  If so, the module
diff --git a/drivers/hwmon/f71882fg.c b/drivers/hwmon/f71882fg.c
index 28bcbac..0b89bb6 100644
--- a/drivers/hwmon/f71882fg.c
+++ b/drivers/hwmon/f71882fg.c
@@ -45,6 +45,7 @@
 #define SIO_REG_ADDR		0x60	/* Logical device address (2 bytes) */
 
 #define SIO_FINTEK_ID		0x1934	/* Manufacturers ID */
+#define SIO_F71808_ID		0x0901  /* Chipset ID */
 #define SIO_F71858_ID		0x0507  /* Chipset ID */
 #define SIO_F71862_ID		0x0601	/* Chipset ID */
 #define SIO_F71882_ID		0x0541	/* Chipset ID */
@@ -96,9 +97,10 @@ static unsigned short force_id;
 module_param(force_id, ushort, 0);
 MODULE_PARM_DESC(force_id, "Override the detected device ID");
 
-enum chips { f71858fg, f71862fg, f71882fg, f71889fg, f8000 };
+enum chips { f71808fg, f71858fg, f71862fg, f71882fg, f71889fg, f8000 };
 
 static const char *f71882fg_names[] = {
+	"f71808fg",
 	"f71858fg",
 	"f71862fg",
 	"f71882fg",
@@ -306,8 +308,8 @@ static struct sensor_device_attribute_2 f71858fg_in_temp_attr[] = {
 	SENSOR_ATTR_2(temp3_fault, S_IRUGO, show_temp_fault, NULL, 0, 2),
 };
 
-/* Temp and in attr common to the f71862fg, f71882fg and f71889fg */
-static struct sensor_device_attribute_2 fxxxx_in_temp_attr[] = {
+/* In attr common to the f71862fg, f71882fg and f71889fg */
+static struct sensor_device_attribute_2 fxxxx_in_attr[] = {
 	SENSOR_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0),
 	SENSOR_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 0, 1),
 	SENSOR_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 0, 2),
@@ -317,6 +319,22 @@ static struct sensor_device_attribute_2 fxxxx_in_temp_attr[] = {
 	SENSOR_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 0, 6),
 	SENSOR_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 0, 7),
 	SENSOR_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 0, 8),
+};
+
+/* In attr for the f71808fg */
+static struct sensor_device_attribute_2 f71808_in_attr[] = {
+	SENSOR_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0),
+	SENSOR_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 0, 1),
+	SENSOR_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 0, 2),
+	SENSOR_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 0, 3),
+	SENSOR_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 0, 4),
+	SENSOR_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 0, 5),
+	SENSOR_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 0, 7),
+	SENSOR_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 0, 8),
+};
+
+/* Temp attr common to the f71808fg, f71862fg, f71882fg and f71889fg */
+static struct sensor_device_attribute_2 fxxxx_temp_attr[] = {
 	SENSOR_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 1),
 	SENSOR_ATTR_2(temp1_max, S_IRUGO|S_IWUSR, show_temp_max,
 		store_temp_max, 0, 1),
@@ -355,6 +373,10 @@ static struct sensor_device_attribute_2 fxxxx_in_temp_attr[] = {
 		store_temp_beep, 0, 6),
 	SENSOR_ATTR_2(temp2_type, S_IRUGO, show_temp_type, NULL, 0, 2),
 	SENSOR_ATTR_2(temp2_fault, S_IRUGO, show_temp_fault, NULL, 0, 2),
+};
+
+/* Temp and in attr common to the f71862fg, f71882fg and f71889fg */
+static struct sensor_device_attribute_2 f71862_temp_attr[] = {
 	SENSOR_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0, 3),
 	SENSOR_ATTR_2(temp3_max, S_IRUGO|S_IWUSR, show_temp_max,
 		store_temp_max, 0, 3),
@@ -989,6 +1011,11 @@ static struct f71882fg_data *f71882fg_update_device(struct device *dev)
 				data->temp_type[1] = 6;
 				break;
 			}
+		} else if (data->type == f71808fg) {
+			reg  = f71882fg_read8(data, F71882FG_REG_TEMP_TYPE);
+			data->temp_type[1] = (reg & 0x02) ? 2 : 4;
+			data->temp_type[2] = (reg & 0x04) ? 2 : 4;
+
 		} else {
 			reg2 = f71882fg_read8(data, F71882FG_REG_PECI);
 			if ((reg2 & 0x03) == 0x01)
@@ -1871,7 +1898,8 @@ static ssize_t store_pwm_auto_point_temp(struct device *dev,
 
 	val /= 1000;
 
-	if (data->type == f71889fg)
+	if (data->type == f71889fg
+	 || data->type == f71808fg)
 		val = SENSORS_LIMIT(val, -128, 127);
 	else
 		val = SENSORS_LIMIT(val, 0, 127);
@@ -1974,8 +2002,28 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
 			/* fall through! */
 		case f71862fg:
 			err = f71882fg_create_sysfs_files(pdev,
-					fxxxx_in_temp_attr,
-					ARRAY_SIZE(fxxxx_in_temp_attr));
+					f71862_temp_attr,
+					ARRAY_SIZE(f71862_temp_attr));
+			if (err)
+				goto exit_unregister_sysfs;
+			err = f71882fg_create_sysfs_files(pdev,
+					fxxxx_in_attr,
+					ARRAY_SIZE(fxxxx_in_attr));
+			if (err)
+				goto exit_unregister_sysfs;
+			err = f71882fg_create_sysfs_files(pdev,
+					fxxxx_temp_attr,
+					ARRAY_SIZE(fxxxx_temp_attr));
+			break;
+		case f71808fg:
+			err = f71882fg_create_sysfs_files(pdev,
+					f71808_in_attr,
+					ARRAY_SIZE(f71808_in_attr));
+			if (err)
+				goto exit_unregister_sysfs;
+			err = f71882fg_create_sysfs_files(pdev,
+					fxxxx_temp_attr,
+					ARRAY_SIZE(fxxxx_temp_attr));
 			break;
 		case f8000:
 			err = f71882fg_create_sysfs_files(pdev,
@@ -2002,6 +2050,7 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
 		case f71862fg:
 			err = (data->pwm_enable & 0x15) != 0x15;
 			break;
+		case f71808fg:
 		case f71882fg:
 		case f71889fg:
 			err = 0;
@@ -2047,6 +2096,7 @@ static int __devinit f71882fg_probe(struct platform_device *pdev)
 					f8000_auto_pwm_attr,
 					ARRAY_SIZE(f8000_auto_pwm_attr));
 			break;
+		case f71808fg:
 		case f71889fg:
 			for (i = 0; i < nr_fans; i++) {
 				data->pwm_auto_point_mapping[i] =
@@ -2126,8 +2176,22 @@ static int f71882fg_remove(struct platform_device *pdev)
 			/* fall through! */
 		case f71862fg:
 			f71882fg_remove_sysfs_files(pdev,
-					fxxxx_in_temp_attr,
-					ARRAY_SIZE(fxxxx_in_temp_attr));
+					f71862_temp_attr,
+					ARRAY_SIZE(f71862_temp_attr));
+			f71882fg_remove_sysfs_files(pdev,
+					fxxxx_in_attr,
+					ARRAY_SIZE(fxxxx_in_attr));
+			f71882fg_remove_sysfs_files(pdev,
+					fxxxx_temp_attr,
+					ARRAY_SIZE(fxxxx_temp_attr));
+			break;
+		case f71808fg:
+			f71882fg_remove_sysfs_files(pdev,
+					f71808_in_attr,
+					ARRAY_SIZE(f71808_in_attr));
+			f71882fg_remove_sysfs_files(pdev,
+					fxxxx_temp_attr,
+					ARRAY_SIZE(fxxxx_temp_attr));
 			break;
 		case f8000:
 			f71882fg_remove_sysfs_files(pdev,
@@ -2195,6 +2259,9 @@ static int __init f71882fg_find(int sioaddr, unsigned short *address,
 
 	devid = force_id ? force_id : superio_inw(sioaddr, SIO_REG_DEVID);
 	switch (devid) {
+	case SIO_F71808_ID:
+		sio_data->type = f71808fg;
+		break;
 	case SIO_F71858_ID:
 		sio_data->type = f71858fg;
 		break;
-- 
1.6.4.4


-- 
Met vriendelijke groet,
With kind regards,
Giel van Schijndel

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