drivers/video/fbdev/sh_mobile_lcdcfb.h

Source file repositories/reference/linux-study-clean/drivers/video/fbdev/sh_mobile_lcdcfb.h

File Facts

System
Linux kernel
Corpus path
drivers/video/fbdev/sh_mobile_lcdcfb.h
Extension
.h
Size
2620 bytes
Lines
108
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 sh_mobile_lcdc_entity_ops {
	/* Display */
	int (*display_on)(struct sh_mobile_lcdc_entity *entity);
	void (*display_off)(struct sh_mobile_lcdc_entity *entity);
};

enum sh_mobile_lcdc_entity_event {
	SH_MOBILE_LCDC_EVENT_DISPLAY_CONNECT,
	SH_MOBILE_LCDC_EVENT_DISPLAY_DISCONNECT,
	SH_MOBILE_LCDC_EVENT_DISPLAY_MODE,
};

struct sh_mobile_lcdc_entity {
	struct module *owner;
	const struct sh_mobile_lcdc_entity_ops *ops;
	struct sh_mobile_lcdc_chan *lcdc;
	struct fb_videomode def_mode;
};

/*
 * struct sh_mobile_lcdc_chan - LCDC display channel
 *
 * @pan_y_offset: Panning linear offset in bytes (luma component)
 * @base_addr_y: Frame buffer viewport base address (luma component)
 * @base_addr_c: Frame buffer viewport base address (chroma component)
 * @pitch: Frame buffer line pitch
 */
struct sh_mobile_lcdc_chan {
	struct sh_mobile_lcdc_priv *lcdc;
	struct sh_mobile_lcdc_entity *tx_dev;
	const struct sh_mobile_lcdc_chan_cfg *cfg;

	unsigned long *reg_offs;
	unsigned long ldmt1r_value;
	unsigned long enabled; /* ME and SE in LDCNT2R */

	struct mutex open_lock;		/* protects the use counter */
	int use_count;

	void *fb_mem;
	unsigned long fb_size;

	dma_addr_t dma_handle;
	unsigned long pan_y_offset;

	unsigned long frame_end;
	wait_queue_head_t frame_end_wait;
	struct completion vsync_completion;

	const struct sh_mobile_lcdc_format_info *format;
	u32 colorspace;
	unsigned int xres;
	unsigned int xres_virtual;
	unsigned int yres;
	unsigned int yres_virtual;
	unsigned int pitch;

	unsigned long base_addr_y;
	unsigned long base_addr_c;
	unsigned int line_size;

	/* Backlight */
	struct backlight_device *bl;
	unsigned int bl_brightness;

	/* FB */
	struct fb_info *info;
	u32 pseudo_palette[PALETTE_NR];
	struct {
		unsigned int width;
		unsigned int height;
		struct fb_videomode mode;
	} display;
	struct fb_deferred_io defio;
	struct scatterlist *sglist;
	int blank_status;
};

#endif

Annotation

Implementation Notes