drivers/video/fbdev/omap2/omapfb/dss/manager-sysfs.c

Source file repositories/reference/linux-study-clean/drivers/video/fbdev/omap2/omapfb/dss/manager-sysfs.c

File Facts

System
Linux kernel
Corpus path
drivers/video/fbdev/omap2/omapfb/dss/manager-sysfs.c
Extension
.c
Size
11235 bytes
Lines
517
Domain
Driver Families
Bucket
drivers/video
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct manager_attribute {
	struct attribute attr;
	ssize_t (*show)(struct omap_overlay_manager *, char *);
	ssize_t	(*store)(struct omap_overlay_manager *, const char *, size_t);
};

#define MANAGER_ATTR(_name, _mode, _show, _store) \
	struct manager_attribute manager_attr_##_name = \
	__ATTR(_name, _mode, _show, _store)

static MANAGER_ATTR(name, S_IRUGO, manager_name_show, NULL);
static MANAGER_ATTR(display, S_IRUGO|S_IWUSR,
		manager_display_show, manager_display_store);
static MANAGER_ATTR(default_color, S_IRUGO|S_IWUSR,
		manager_default_color_show, manager_default_color_store);
static MANAGER_ATTR(trans_key_type, S_IRUGO|S_IWUSR,
		manager_trans_key_type_show, manager_trans_key_type_store);
static MANAGER_ATTR(trans_key_value, S_IRUGO|S_IWUSR,
		manager_trans_key_value_show, manager_trans_key_value_store);
static MANAGER_ATTR(trans_key_enabled, S_IRUGO|S_IWUSR,
		manager_trans_key_enabled_show,
		manager_trans_key_enabled_store);
static MANAGER_ATTR(alpha_blending_enabled, S_IRUGO|S_IWUSR,
		manager_alpha_blending_enabled_show,
		manager_alpha_blending_enabled_store);
static MANAGER_ATTR(cpr_enable, S_IRUGO|S_IWUSR,
		manager_cpr_enable_show,
		manager_cpr_enable_store);
static MANAGER_ATTR(cpr_coef, S_IRUGO|S_IWUSR,
		manager_cpr_coef_show,
		manager_cpr_coef_store);


static struct attribute *manager_sysfs_attrs[] = {
	&manager_attr_name.attr,
	&manager_attr_display.attr,
	&manager_attr_default_color.attr,
	&manager_attr_trans_key_type.attr,
	&manager_attr_trans_key_value.attr,
	&manager_attr_trans_key_enabled.attr,
	&manager_attr_alpha_blending_enabled.attr,
	&manager_attr_cpr_enable.attr,
	&manager_attr_cpr_coef.attr,
	NULL
};
ATTRIBUTE_GROUPS(manager_sysfs);

static ssize_t manager_attr_show(struct kobject *kobj, struct attribute *attr,
		char *buf)
{
	struct omap_overlay_manager *manager;
	struct manager_attribute *manager_attr;

	manager = container_of(kobj, struct omap_overlay_manager, kobj);
	manager_attr = container_of(attr, struct manager_attribute, attr);

	if (!manager_attr->show)
		return -ENOENT;

	return manager_attr->show(manager, buf);
}

static ssize_t manager_attr_store(struct kobject *kobj, struct attribute *attr,
		const char *buf, size_t size)
{
	struct omap_overlay_manager *manager;
	struct manager_attribute *manager_attr;

	manager = container_of(kobj, struct omap_overlay_manager, kobj);
	manager_attr = container_of(attr, struct manager_attribute, attr);

	if (!manager_attr->store)
		return -ENOENT;

	return manager_attr->store(manager, buf, size);
}

static const struct sysfs_ops manager_sysfs_ops = {
	.show = manager_attr_show,
	.store = manager_attr_store,
};

static struct kobj_type manager_ktype = {
	.sysfs_ops = &manager_sysfs_ops,
	.default_groups = manager_sysfs_groups,
};

int dss_manager_kobj_init(struct omap_overlay_manager *mgr,
		struct platform_device *pdev)
{

Annotation

Implementation Notes