Commit 764e824e authored by Greg Kroah-Hartman's avatar Greg Kroah-Hartman
Browse files

greybus: module.c: add attributes 



This adds the attributes power_control and present to a module.  It also
removes the unneeded module_id attribute, as that comes from the name of
the module itself.

Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
Reviewed-by: default avatarAlex Elder <elder@linaro.org>
parent 24ef4853

drivers/staging/greybus/module.c

+41 −16
Original line number Diff line number Diff line
@@ -11,37 +11,62 @@ 




/* module sysfs attributes */

#define gb_module_attr(field, type)					\

static ssize_t field##_show(struct device *dev,				\

			    struct device_attribute *attr,		\

			    char *buf)					\

{									\

	struct gb_module *module = to_gb_module(dev);			\

	return sprintf(buf, "%"#type"\n", module->field);		\

}									\

static DEVICE_ATTR_RO(field)



// FIXME, do we really need this attribute?

gb_module_attr(module_id, x);



static ssize_t epm_show(struct device *dev, struct device_attribute *attr,

			char *buf)

{

	// FIXME, implement something here

	// FIXME

	// Implement something here when we have a working control protocol

	return sprintf(buf, "1\n");

}



static ssize_t epm_store(struct device *dev, struct device_attribute *attr,

			 const char *buf, size_t size)

{

	// FIXME, implement something here.

	// FIXME

	// Implement something here when we have a working control protocol

	return 0;

}

static DEVICE_ATTR_RW(epm);



static ssize_t power_control_show(struct device *dev,

				  struct device_attribute *addr, char *buf)

{

	// FIXME

	// Implement something here when we have a working control protocol

	return sprintf(buf, "1\n");

}



static ssize_t power_control_store(struct device *dev,

				   struct device_attribute *attr,

				   const char *buf, size_t size)

{

	// FIXME

	// Implement something here when we have a working control protocol

	return 0;

}

static DEVICE_ATTR_RW(power_control);



static ssize_t present_show(struct device *dev,

			    struct device_attribute *addr, char *buf)

{

	// FIXME

	// Implement something here when we have a working control protocol

	return sprintf(buf, "1\n");

}



static ssize_t present_store(struct device *dev, struct device_attribute *attr,

			     const char *buf, size_t size)

{

	// FIXME

	// Implement something here when we have a working control protocol

	return 0;

}

static DEVICE_ATTR_RW(present);



static struct attribute *module_attrs[] = {

	&dev_attr_module_id.attr,

	&dev_attr_epm.attr,

	&dev_attr_power_control.attr,

	&dev_attr_present.attr,

	NULL,

};

ATTRIBUTE_GROUPS(module);