[PATCH 1/3] w1: ds2760_battery: cleanups in ds2760_battery_probe()

[PATCH 1/3] w1: ds2760_battery: cleanups in ds2760_battery_probe()

[Daniel Mack]

Removed struct ds2760_platform_data which wasn't defined anywhere.
Indentation cleanups.

Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
Cc: Matt Reimer <mreimer@vpop.net>
Cc: Anton Vorontsov <cbou@mail.ru>
Signed-off-by: Daniel Mack <daniel@caiaq.de>
---
 drivers/power/ds2760_battery.c |   16 +++++++---------
 1 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index a52d4a1..9331009 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -344,7 +344,6 @@ static int ds2760_battery_probe(struct platform_device *pdev)
 {
 	int retval = 0;
 	struct ds2760_device_info *di;
-	struct ds2760_platform_data *pdata;
 
 	di = kzalloc(sizeof(*di), GFP_KERNEL);
 	if (!di) {
@@ -354,14 +353,13 @@ static int ds2760_battery_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, di);
 
-	pdata = pdev->dev.platform_data;
-	di->dev		= &pdev->dev;
-	di->w1_dev	     = pdev->dev.parent;
-	di->bat.name	   = dev_name(&pdev->dev);
-	di->bat.type	   = POWER_SUPPLY_TYPE_BATTERY;
-	di->bat.properties     = ds2760_battery_props;
-	di->bat.num_properties = ARRAY_SIZE(ds2760_battery_props);
-	di->bat.get_property   = ds2760_battery_get_property;
+	di->dev			= &pdev->dev;
+	di->w1_dev		= pdev->dev.parent;
+	di->bat.name		= dev_name(&pdev->dev);
+	di->bat.type		= POWER_SUPPLY_TYPE_BATTERY;
+	di->bat.properties	= ds2760_battery_props;
+	di->bat.num_properties	= ARRAY_SIZE(ds2760_battery_props);
+	di->bat.get_property	= ds2760_battery_get_property;
 	di->bat.external_power_changed =
 				  ds2760_battery_external_power_changed;
 
-- 
1.6.2.1

[PATCH 2/3] w1: ds2760: add support for EEPROM read and write

[Daniel Mack]

In order to modify the DS2762's status registers and to add support for
sleep mode, there is need for functions to write the internal EEPROM.

Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
Cc: Matt Reimer <mreimer@vpop.net>
Cc: Anton Vorontsov <cbou@mail.ru>
Signed-off-by: Daniel Mack <daniel@caiaq.de>
---
 drivers/w1/slaves/w1_ds2760.c |   28 ++++++++++++++++++++++++++++
 drivers/w1/slaves/w1_ds2760.h |    2 ++
 2 files changed, 30 insertions(+), 0 deletions(-)

diff --git a/drivers/w1/slaves/w1_ds2760.c b/drivers/w1/slaves/w1_ds2760.c
index 1f09d4e..5ad7a0b 100644
--- a/drivers/w1/slaves/w1_ds2760.c
+++ b/drivers/w1/slaves/w1_ds2760.c
@@ -68,6 +68,34 @@ int w1_ds2760_write(struct device *dev, char *buf, int addr, size_t count)
 	return w1_ds2760_io(dev, buf, addr, count, 1);
 }
 
+static int w1_ds2760_eeprom_cmd(struct device *dev, int addr, int cmd)
+{
+	struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
+
+	if (!dev)
+		return -EINVAL;
+
+	mutex_lock(&sl->master->mutex);
+
+	if (w1_reset_select_slave(sl) == 0) {
+		w1_write_8(sl->master, cmd);
+		w1_write_8(sl->master, addr);
+	}
+
+	mutex_unlock(&sl->master->mutex);
+	return 0;
+}
+
+int w1_ds2760_store_eeprom(struct device *dev, int addr)
+{
+	return w1_ds2760_eeprom_cmd(dev, addr, W1_DS2760_COPY_DATA);
+}
+
+int w1_ds2760_recall_eeprom(struct device *dev, int addr)
+{
+	return w1_ds2760_eeprom_cmd(dev, addr, W1_DS2760_RECALL_DATA);
+}
+
 static ssize_t w1_ds2760_read_bin(struct kobject *kobj,
 				  struct bin_attribute *bin_attr,
 				  char *buf, loff_t off, size_t count)
diff --git a/drivers/w1/slaves/w1_ds2760.h b/drivers/w1/slaves/w1_ds2760.h
index f130242..ea39419 100644
--- a/drivers/w1/slaves/w1_ds2760.h
+++ b/drivers/w1/slaves/w1_ds2760.h
@@ -46,5 +46,7 @@ extern int w1_ds2760_read(struct device *dev, char *buf, int addr,
 			  size_t count);
 extern int w1_ds2760_write(struct device *dev, char *buf, int addr,
 			   size_t count);
+extern int w1_ds2760_store_eeprom(struct device *dev, int addr);
+extern int w1_ds2760_recall_eeprom(struct device *dev, int addr);
 
 #endif /* !__w1_ds2760_h__ */
-- 
1.6.2.1

[PATCH 3/3] w1: ds2760_battery: add support for sleep mode feature

[Daniel Mack]

This adds support for ds2760's sleep mode feature. With this feature
enabled, the chip enters a deep sleep mode and disconnects from the
battery when the w1 line is held down for more than 2 seconds.

This new behaviour can be switched on and off using a new module
parameter.

Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
Cc: Matt Reimer <mreimer@vpop.net>
Cc: Anton Vorontsov <cbou@mail.ru>
Signed-off-by: Daniel Mack <daniel@caiaq.de>
---
 drivers/power/ds2760_battery.c |   26 ++++++++++++++++++++++++++
 drivers/w1/slaves/w1_ds2760.h  |    5 +++++
 2 files changed, 31 insertions(+), 0 deletions(-)

diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index 9331009..520b5c4 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -62,6 +62,10 @@ static unsigned int cache_time = 1000;
 module_param(cache_time, uint, 0644);
 MODULE_PARM_DESC(cache_time, "cache time in milliseconds");
 
+static unsigned int pmod_enabled;
+module_param(pmod_enabled, bool, 0644);
+MODULE_PARM_DESC(pmod_enabled, "PMOD enable bit");
+
 /* Some batteries have their rated capacity stored a N * 10 mAh, while
  * others use an index into this table. */
 static int rated_capacities[] = {
@@ -259,6 +263,17 @@ static void ds2760_battery_update_status(struct ds2760_device_info *di)
 		power_supply_changed(&di->bat);
 }
 
+static void ds2760_battery_write_status(struct ds2760_device_info *di,
+					char status)
+{
+	if (status == di->raw[DS2760_STATUS_REG])
+		return;
+
+	w1_ds2760_write(di->w1_dev, &status, DS2760_STATUS_WRITE_REG, 1);
+	w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+	w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+}
+
 static void ds2760_battery_work(struct work_struct *work)
 {
 	struct ds2760_device_info *di = container_of(work,
@@ -342,6 +357,7 @@ static enum power_supply_property ds2760_battery_props[] = {
 
 static int ds2760_battery_probe(struct platform_device *pdev)
 {
+	char status;
 	int retval = 0;
 	struct ds2760_device_info *di;
 
@@ -371,6 +387,16 @@ static int ds2760_battery_probe(struct platform_device *pdev)
 		goto batt_failed;
 	}
 
+	/* enable sleep mode feature */
+	ds2760_battery_read_status(di);
+	status = di->raw[DS2760_STATUS_REG];
+	if (pmod_enabled)
+		status |= DS2760_STATUS_PMOD;
+	else
+		status &= ~DS2760_STATUS_PMOD;
+
+	ds2760_battery_write_status(di, status);
+
 	INIT_DELAYED_WORK(&di->monitor_work, ds2760_battery_work);
 	di->monitor_wqueue = create_singlethread_workqueue(dev_name(&pdev->dev));
 	if (!di->monitor_wqueue) {
diff --git a/drivers/w1/slaves/w1_ds2760.h b/drivers/w1/slaves/w1_ds2760.h
index ea39419..58e7741 100644
--- a/drivers/w1/slaves/w1_ds2760.h
+++ b/drivers/w1/slaves/w1_ds2760.h
@@ -25,6 +25,10 @@
 
 #define DS2760_PROTECTION_REG		0x00
 #define DS2760_STATUS_REG		0x01
+	#define DS2760_STATUS_IE	(1 << 2)
+	#define DS2760_STATUS_SWEN	(1 << 3)
+	#define DS2760_STATUS_RNAOP	(1 << 4)
+	#define DS2760_STATUS_PMOD	(1 << 5)
 #define DS2760_EEPROM_REG		0x07
 #define DS2760_SPECIAL_FEATURE_REG	0x08
 #define DS2760_VOLTAGE_MSB		0x0c
@@ -38,6 +42,7 @@
 #define DS2760_EEPROM_BLOCK0		0x20
 #define DS2760_ACTIVE_FULL		0x20
 #define DS2760_EEPROM_BLOCK1		0x30
+#define DS2760_STATUS_WRITE_REG		0x31
 #define DS2760_RATED_CAPACITY		0x32
 #define DS2760_CURRENT_OFFSET_BIAS	0x33
 #define DS2760_ACTIVE_EMPTY		0x3b
-- 
1.6.2.1

[PATCH 2/3] w1: ds2760: add support for EEPROM read and write

[Daniel Mack]

In order to modify the DS2762's status registers and to add support for
sleep mode, there is need for functions to write the internal EEPROM.

Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
Cc: Matt Reimer <mreimer@vpop.net>
Cc: Anton Vorontsov <cbou@mail.ru>
Signed-off-by: Daniel Mack <daniel@caiaq.de>
---
 Ammended version with EXPORT_SYMBOL() for the two new functions.

 drivers/w1/slaves/w1_ds2760.c |   30 ++++++++++++++++++++++++++++++
 drivers/w1/slaves/w1_ds2760.h |    2 ++
 2 files changed, 32 insertions(+), 0 deletions(-)

diff --git a/drivers/w1/slaves/w1_ds2760.c b/drivers/w1/slaves/w1_ds2760.c
index 1f09d4e..59f708e 100644
--- a/drivers/w1/slaves/w1_ds2760.c
+++ b/drivers/w1/slaves/w1_ds2760.c
@@ -68,6 +68,34 @@ int w1_ds2760_write(struct device *dev, char *buf, int addr, size_t count)
 	return w1_ds2760_io(dev, buf, addr, count, 1);
 }
 
+static int w1_ds2760_eeprom_cmd(struct device *dev, int addr, int cmd)
+{
+	struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
+
+	if (!dev)
+		return -EINVAL;
+
+	mutex_lock(&sl->master->mutex);
+
+	if (w1_reset_select_slave(sl) == 0) {
+		w1_write_8(sl->master, cmd);
+		w1_write_8(sl->master, addr);
+	}
+
+	mutex_unlock(&sl->master->mutex);
+	return 0;
+}
+
+int w1_ds2760_store_eeprom(struct device *dev, int addr)
+{
+	return w1_ds2760_eeprom_cmd(dev, addr, W1_DS2760_COPY_DATA);
+}
+
+int w1_ds2760_recall_eeprom(struct device *dev, int addr)
+{
+	return w1_ds2760_eeprom_cmd(dev, addr, W1_DS2760_RECALL_DATA);
+}
+
 static ssize_t w1_ds2760_read_bin(struct kobject *kobj,
 				  struct bin_attribute *bin_attr,
 				  char *buf, loff_t off, size_t count)
@@ -200,6 +228,8 @@ static void __exit w1_ds2760_exit(void)
 
 EXPORT_SYMBOL(w1_ds2760_read);
 EXPORT_SYMBOL(w1_ds2760_write);
+EXPORT_SYMBOL(w1_ds2760_store_eeprom);
+EXPORT_SYMBOL(w1_ds2760_recall_eeprom);
 
 module_init(w1_ds2760_init);
 module_exit(w1_ds2760_exit);
diff --git a/drivers/w1/slaves/w1_ds2760.h b/drivers/w1/slaves/w1_ds2760.h
index f130242..ea39419 100644
--- a/drivers/w1/slaves/w1_ds2760.h
+++ b/drivers/w1/slaves/w1_ds2760.h
@@ -46,5 +46,7 @@ extern int w1_ds2760_read(struct device *dev, char *buf, int addr,
 			  size_t count);
 extern int w1_ds2760_write(struct device *dev, char *buf, int addr,
 			   size_t count);
+extern int w1_ds2760_store_eeprom(struct device *dev, int addr);
+extern int w1_ds2760_recall_eeprom(struct device *dev, int addr);
 
 #endif /* !__w1_ds2760_h__ */
-- 
1.6.2.1

Re: [PATCH 2/3] w1: ds2760: add support for EEPROM read and write

[Anton Vorontsov]

On Tue, Apr 28, 2009 at 10:55:01AM +0200, Daniel Mack wrote:
> In order to modify the DS2762's status registers and to add support for
> sleep mode, there is need for functions to write the internal EEPROM.
> 
> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
> Cc: Matt Reimer <mreimer@vpop.net>
> Cc: Anton Vorontsov <cbou@mail.ru>
> Signed-off-by: Daniel Mack <daniel@caiaq.de>
> ---

Evgeniy, don't mind if I take it via battery-2.6.git tree?

>  drivers/w1/slaves/w1_ds2760.c |   28 ++++++++++++++++++++++++++++
>  drivers/w1/slaves/w1_ds2760.h |    2 ++
>  2 files changed, 30 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/w1/slaves/w1_ds2760.c b/drivers/w1/slaves/w1_ds2760.c
> index 1f09d4e..5ad7a0b 100644
> --- a/drivers/w1/slaves/w1_ds2760.c
> +++ b/drivers/w1/slaves/w1_ds2760.c
> @@ -68,6 +68,34 @@ int w1_ds2760_write(struct device *dev, char *buf, int addr, size_t count)
>  	return w1_ds2760_io(dev, buf, addr, count, 1);
>  }
>  
> +static int w1_ds2760_eeprom_cmd(struct device *dev, int addr, int cmd)
> +{
> +	struct w1_slave *sl = container_of(dev, struct w1_slave, dev);
> +
> +	if (!dev)
> +		return -EINVAL;
> +
> +	mutex_lock(&sl->master->mutex);
> +
> +	if (w1_reset_select_slave(sl) == 0) {
> +		w1_write_8(sl->master, cmd);
> +		w1_write_8(sl->master, addr);
> +	}
> +
> +	mutex_unlock(&sl->master->mutex);
> +	return 0;
> +}
> +
> +int w1_ds2760_store_eeprom(struct device *dev, int addr)
> +{
> +	return w1_ds2760_eeprom_cmd(dev, addr, W1_DS2760_COPY_DATA);
> +}
> +
> +int w1_ds2760_recall_eeprom(struct device *dev, int addr)
> +{
> +	return w1_ds2760_eeprom_cmd(dev, addr, W1_DS2760_RECALL_DATA);
> +}
> +
>  static ssize_t w1_ds2760_read_bin(struct kobject *kobj,
>  				  struct bin_attribute *bin_attr,
>  				  char *buf, loff_t off, size_t count)
> diff --git a/drivers/w1/slaves/w1_ds2760.h b/drivers/w1/slaves/w1_ds2760.h
> index f130242..ea39419 100644
> --- a/drivers/w1/slaves/w1_ds2760.h
> +++ b/drivers/w1/slaves/w1_ds2760.h
> @@ -46,5 +46,7 @@ extern int w1_ds2760_read(struct device *dev, char *buf, int addr,
>  			  size_t count);
>  extern int w1_ds2760_write(struct device *dev, char *buf, int addr,
>  			   size_t count);
> +extern int w1_ds2760_store_eeprom(struct device *dev, int addr);
> +extern int w1_ds2760_recall_eeprom(struct device *dev, int addr);
>  
>  #endif /* !__w1_ds2760_h__ */
> -- 
> 1.6.2.1
> 

-- 
Anton Vorontsov
email: cbouatmailru@gmail.com
irc://irc.freenode.net/bd2

Re: [PATCH 3/3] w1: ds2760_battery: add support for sleep mode feature

[Anton Vorontsov]

On Tue, Apr 28, 2009 at 10:55:02AM +0200, Daniel Mack wrote:
> This adds support for ds2760's sleep mode feature. With this feature
> enabled, the chip enters a deep sleep mode and disconnects from the
> battery when the w1 line is held down for more than 2 seconds.
> 
> This new behaviour can be switched on and off using a new module
> parameter.
> 
> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
> Cc: Matt Reimer <mreimer@vpop.net>
> Cc: Anton Vorontsov <cbou@mail.ru>
> Signed-off-by: Daniel Mack <daniel@caiaq.de>
> ---
[...]
> --- a/drivers/power/ds2760_battery.c
> +++ b/drivers/power/ds2760_battery.c
[...]
> diff --git a/drivers/w1/slaves/w1_ds2760.h b/drivers/w1/slaves/w1_ds2760.h
> index ea39419..58e7741 100644
> --- a/drivers/w1/slaves/w1_ds2760.h
> +++ b/drivers/w1/slaves/w1_ds2760.h
> @@ -25,6 +25,10 @@
>  
>  #define DS2760_PROTECTION_REG		0x00
>  #define DS2760_STATUS_REG		0x01
> +	#define DS2760_STATUS_IE	(1 << 2)
> +	#define DS2760_STATUS_SWEN	(1 << 3)
> +	#define DS2760_STATUS_RNAOP	(1 << 4)
> +	#define DS2760_STATUS_PMOD	(1 << 5)

The single patch touch battery and w1 trees.

So, Evgeniy, would you mind if I take this patch?


Thanks!

>  #define DS2760_EEPROM_REG		0x07
>  #define DS2760_SPECIAL_FEATURE_REG	0x08
>  #define DS2760_VOLTAGE_MSB		0x0c
> @@ -38,6 +42,7 @@
>  #define DS2760_EEPROM_BLOCK0		0x20
>  #define DS2760_ACTIVE_FULL		0x20
>  #define DS2760_EEPROM_BLOCK1		0x30
> +#define DS2760_STATUS_WRITE_REG		0x31
>  #define DS2760_RATED_CAPACITY		0x32
>  #define DS2760_CURRENT_OFFSET_BIAS	0x33
>  #define DS2760_ACTIVE_EMPTY		0x3b
> -- 
> 1.6.2.1

-- 
Anton Vorontsov
email: cbouatmailru@gmail.com
irc://irc.freenode.net/bd2

Re: [PATCH 2/3] w1: ds2760: add support for EEPROM read and write

[Evgeniy Polyakov]

Hi Anton.

On Tue, Apr 28, 2009 at 07:01:09PM +0400, Anton Vorontsov (avorontsov@ru.mvista.com) wrote:
> On Tue, Apr 28, 2009 at 10:55:01AM +0200, Daniel Mack wrote:
> > In order to modify the DS2762's status registers and to add support for
> > sleep mode, there is need for functions to write the internal EEPROM.
> > 
> > Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
> > Cc: Matt Reimer <mreimer@vpop.net>
> > Cc: Anton Vorontsov <cbou@mail.ru>
> > Signed-off-by: Daniel Mack <daniel@caiaq.de>
> > ---
> 
> Evgeniy, don't mind if I take it via battery-2.6.git tree?

Looks good, ack!
Feel free to push both patches via battery tree when needed.

-- 
	Evgeniy Polyakov

Re: [PATCH 1/3] w1: ds2760_battery: cleanups in ds2760_battery_probe()

[Matt Reimer]

Daniel Mack wrote:
> Removed struct ds2760_platform_data which wasn't defined anywhere.
> Indentation cleanups.
>
> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
> Cc: Matt Reimer <mreimer@vpop.net>
> Cc: Anton Vorontsov <cbou@mail.ru>
> Signed-off-by: Daniel Mack <daniel@caiaq.de>
>   
Ack.

Matt

Re: [PATCH 2/3] w1: ds2760: add support for EEPROM read and write

[Matt Reimer]

Daniel Mack wrote:
> In order to modify the DS2762's status registers and to add support for
> sleep mode, there is need for functions to write the internal EEPROM.
>
> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
> Cc: Matt Reimer <mreimer@vpop.net>
> Cc: Anton Vorontsov <cbou@mail.ru>
> Signed-off-by: Daniel Mack <daniel@caiaq.de>
>   

Ack.

Matt

Re: [PATCH 3/3] w1: ds2760_battery: add support for sleep mode feature

[Matt Reimer]

Daniel Mack wrote:
> This adds support for ds2760's sleep mode feature. With this feature
> enabled, the chip enters a deep sleep mode and disconnects from the
> battery when the w1 line is held down for more than 2 seconds.
>
> This new behaviour can be switched on and off using a new module
> parameter.
>
> Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
> Cc: Matt Reimer <mreimer@vpop.net>
> Cc: Anton Vorontsov <cbou@mail.ru>
> Signed-off-by: Daniel Mack <daniel@caiaq.de>
>   
Ack.

Matt