include/drm/display/drm_scdc_helper.h
Source file repositories/reference/linux-study-clean/include/drm/display/drm_scdc_helper.h
File Facts
- System
- Linux kernel
- Corpus path
include/drm/display/drm_scdc_helper.h- Extension
.h- Size
- 2791 bytes
- Lines
- 81
- Domain
- Repository Root And Misc
- Bucket
- include
- Inferred role
- Repository Root And Misc: implementation source
- Status
- source implementation candidate
Why This File Exists
Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.
- Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/types.hdrm/display/drm_scdc.h
Detected Declarations
struct drm_connectorstruct i2c_adapterfunction drm_scdc_readfunction drm_scdc_write
Annotated Snippet
#ifndef DRM_SCDC_HELPER_H
#define DRM_SCDC_HELPER_H
#include <linux/types.h>
#include <drm/display/drm_scdc.h>
struct drm_connector;
struct i2c_adapter;
ssize_t drm_scdc_read(struct i2c_adapter *adapter, u8 offset, void *buffer,
size_t size);
ssize_t drm_scdc_write(struct i2c_adapter *adapter, u8 offset,
const void *buffer, size_t size);
/**
* drm_scdc_readb - read a single byte from SCDC
* @adapter: I2C adapter
* @offset: offset of register to read
* @value: return location for the register value
*
* Reads a single byte from SCDC. This is a convenience wrapper around the
* drm_scdc_read() function.
*
* Returns:
* 0 on success or a negative error code on failure.
*/
static inline int drm_scdc_readb(struct i2c_adapter *adapter, u8 offset,
u8 *value)
{
return drm_scdc_read(adapter, offset, value, sizeof(*value));
}
/**
* drm_scdc_writeb - write a single byte to SCDC
* @adapter: I2C adapter
* @offset: offset of register to read
* @value: return location for the register value
*
* Writes a single byte to SCDC. This is a convenience wrapper around the
* drm_scdc_write() function.
*
* Returns:
* 0 on success or a negative error code on failure.
*/
static inline int drm_scdc_writeb(struct i2c_adapter *adapter, u8 offset,
u8 value)
{
return drm_scdc_write(adapter, offset, &value, sizeof(value));
}
bool drm_scdc_get_scrambling_status(struct drm_connector *connector);
bool drm_scdc_set_scrambling(struct drm_connector *connector, bool enable);
bool drm_scdc_set_high_tmds_clock_ratio(struct drm_connector *connector, bool set);
#endif
Annotation
- Immediate include surface: `linux/types.h`, `drm/display/drm_scdc.h`.
- Detected declarations: `struct drm_connector`, `struct i2c_adapter`, `function drm_scdc_read`, `function drm_scdc_write`.
- Atlas domain: Repository Root And Misc / include.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.