arch/arm/mach-omap2/omap_hwmod.h

Source file repositories/reference/linux-study-clean/arch/arm/mach-omap2/omap_hwmod.h

File Facts

System
Linux kernel
Corpus path
arch/arm/mach-omap2/omap_hwmod.h
Extension
.h
Size
25990 bytes
Lines
675
Domain
Architecture Layer
Bucket
arch/arm
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

struct omap_hwmod_rst_info {
	const char	*name;
	u8		rst_shift;
	u8		st_shift;
};

/**
 * struct omap_hwmod_opt_clk - optional clocks used by this hwmod
 * @role: "sys", "32k", "tv", etc -- for use in clk_get()
 * @clk: opt clock: OMAP clock name
 * @_clk: pointer to the struct clk (filled in at runtime)
 *
 * The module's interface clock and main functional clock should not
 * be added as optional clocks.
 */
struct omap_hwmod_opt_clk {
	const char	*role;
	const char	*clk;
	struct clk	*_clk;
};


/* omap_hwmod_omap2_firewall.flags bits */
#define OMAP_FIREWALL_L3		(1 << 0)
#define OMAP_FIREWALL_L4		(1 << 1)

/**
 * struct omap_hwmod_omap2_firewall - OMAP2/3 device firewall data
 * @l3_perm_bit: bit shift for L3_PM_*_PERMISSION_*
 * @l4_fw_region: L4 firewall region ID
 * @l4_prot_group: L4 protection group ID
 * @flags: (see omap_hwmod_omap2_firewall.flags macros above)
 */
struct omap_hwmod_omap2_firewall {
	u8 l3_perm_bit;
	u8 l4_fw_region;
	u8 l4_prot_group;
	u8 flags;
};

/*
 * omap_hwmod_ocp_if.user bits: these indicate the initiators that use this
 * interface to interact with the hwmod.  Used to add sleep dependencies
 * when the module is enabled or disabled.
 */
#define OCP_USER_MPU			(1 << 0)
#define OCP_USER_SDMA			(1 << 1)
#define OCP_USER_DSP			(1 << 2)
#define OCP_USER_IVA			(1 << 3)

/* omap_hwmod_ocp_if.flags bits */
#define OCPIF_SWSUP_IDLE		(1 << 0)
#define OCPIF_CAN_BURST			(1 << 1)

/* omap_hwmod_ocp_if._int_flags possibilities */
#define _OCPIF_INT_FLAGS_REGISTERED	(1 << 0)


/**
 * struct omap_hwmod_ocp_if - OCP interface data
 * @master: struct omap_hwmod that initiates OCP transactions on this link
 * @slave: struct omap_hwmod that responds to OCP transactions on this link
 * @addr: address space associated with this link
 * @clk: interface clock: OMAP clock name
 * @_clk: pointer to the interface struct clk (filled in at runtime)
 * @fw: interface firewall data
 * @width: OCP data width
 * @user: initiators using this interface (see OCP_USER_* macros above)
 * @flags: OCP interface flags (see OCPIF_* macros above)
 * @_int_flags: internal flags (see _OCPIF_INT_FLAGS* macros above)
 *
 * It may also be useful to add a tag_cnt field for OCP2.x devices.
 *
 * Parameter names beginning with an underscore are managed internally by
 * the omap_hwmod code and should not be set during initialization.
 */
struct omap_hwmod_ocp_if {
	struct omap_hwmod		*master;
	struct omap_hwmod		*slave;
	struct omap_hwmod_addr_space	*addr;
	const char			*clk;
	struct clk			*_clk;
	struct list_head		node;
	union {
		struct omap_hwmod_omap2_firewall omap2;
	}				fw;
	u8				width;
	u8				user;
	u8				flags;
	u8				_int_flags;

Annotation

Implementation Notes