drm/nouveau/kms: Don't change EDID when it hasn't actually changed

[linux.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_pm.h

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
index 5db0ef86e84cfd33e7b430e1cb073a5570135e55..d9ae2b49a402fef3b11e425d57d41fe74ab48f7a 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
@@ -30,6 +30,55 @@ struct cg_flag_name
        const char *name;
 };
 
+enum amdgpu_device_attr_flags {
+       ATTR_FLAG_BASIC = (1 << 0),
+       ATTR_FLAG_ONEVF = (1 << 16),
+};
+
+#define ATTR_FLAG_TYPE_MASK    (0x0000ffff)
+#define ATTR_FLAG_MODE_MASK    (0xffff0000)
+#define ATTR_FLAG_MASK_ALL     (0xffffffff)
+
+enum amdgpu_device_attr_states {
+       ATTR_STATE_UNSUPPORTED = 0,
+       ATTR_STATE_SUPPORTED,
+};
+
+struct amdgpu_device_attr {
+       struct device_attribute dev_attr;
+       enum amdgpu_device_attr_flags flags;
+       int (*attr_update)(struct amdgpu_device *adev, struct amdgpu_device_attr *attr,
+                          uint32_t mask, enum amdgpu_device_attr_states *states);
+
+};
+
+struct amdgpu_device_attr_entry {
+       struct list_head entry;
+       struct amdgpu_device_attr *attr;
+};
+
+#define to_amdgpu_device_attr(_dev_attr) \
+       container_of(_dev_attr, struct amdgpu_device_attr, dev_attr)
+
+#define __AMDGPU_DEVICE_ATTR(_name, _mode, _show, _store, _flags, ...) \
+       { .dev_attr = __ATTR(_name, _mode, _show, _store),              \
+         .flags = _flags,                                              \
+         ##__VA_ARGS__, }
+
+#define AMDGPU_DEVICE_ATTR(_name, _mode, _flags, ...)                  \
+       __AMDGPU_DEVICE_ATTR(_name, _mode,                              \
+                            amdgpu_get_##_name, amdgpu_set_##_name,    \
+                            _flags, ##__VA_ARGS__)
+
+#define AMDGPU_DEVICE_ATTR_RW(_name, _flags, ...)                      \
+       AMDGPU_DEVICE_ATTR(_name, S_IRUGO | S_IWUSR,                    \
+                          _flags, ##__VA_ARGS__)
+
+#define AMDGPU_DEVICE_ATTR_RO(_name, _flags, ...)                      \
+       __AMDGPU_DEVICE_ATTR(_name, S_IRUGO,                            \
+                            amdgpu_get_##_name, NULL,                  \
+                            _flags, ##__VA_ARGS__)
+
 void amdgpu_pm_acpi_event_handler(struct amdgpu_device *adev);
 int amdgpu_pm_sysfs_init(struct amdgpu_device *adev);
 int amdgpu_pm_virt_sysfs_init(struct amdgpu_device *adev);