drivers/staging/sm750fb/ddk750_chip.h

Source file repositories/reference/linux-study-clean/drivers/staging/sm750fb/ddk750_chip.h

File Facts

System
Linux kernel
Corpus path
drivers/staging/sm750fb/ddk750_chip.h
Extension
.h
Size
2270 bytes
Lines
103
Domain
Driver Families
Bucket
drivers/staging
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 pll_value {
	enum clock_type clock_type;
	unsigned long input_freq; /* Input clock frequency to the PLL */

	/* Use this when clockType = PANEL_PLL */
	unsigned long M;
	unsigned long N;
	unsigned long OD;
	unsigned long POD;
};

/* input struct to initChipParam() function */
struct initchip_param {
	/* Use power mode 0 or 1 */
	unsigned short power_mode;

	/*
	 * Speed of main chip clock in MHz unit
	 * 0 = keep the current clock setting
	 * Others = the new main chip clock
	 */
	unsigned short chip_clock;

	/*
	 * Speed of memory clock in MHz unit
	 * 0 = keep the current clock setting
	 * Others = the new memory clock
	 */
	unsigned short mem_clock;

	/*
	 * Speed of master clock in MHz unit
	 * 0 = keep the current clock setting
	 * Others = the new master clock
	 */
	unsigned short master_clock;

	/*
	 * 0 = leave all engine state untouched.
	 * 1 = make sure they are off: 2D, Overlay,
	 * video alpha, alpha, hardware cursors
	 */
	unsigned short set_all_eng_off;

	/*
	 * 0 = Do not reset the memory controller
	 * 1 = Reset the memory controller
	 */
	unsigned char reset_memory;

	/* More initialization parameter can be added if needed */
};

enum logical_chip_type sm750_get_chip_type(void);
void sm750_set_chip_type(unsigned short dev_id, u8 rev_id);
unsigned int sm750_calc_pll_value(unsigned int request, struct  pll_value *pll);
unsigned int sm750_format_pll_reg(struct pll_value *p_PLL);
unsigned int ddk750_get_vm_size(void);
int ddk750_init_hw(struct initchip_param *pinit_param);

#endif

Annotation

Implementation Notes