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[ARM] omap: provide a NULL clock operations structure

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... and use it for clocks which are ALWAYS_ENABLED.  These clocks
use a non-NULL enable_reg pointer for other purposes (such as
selecting clock rates.)

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2008-11-04 16:35:03 +00:00
committed by Russell King
parent 548d849574
commit 897dcded6f
7 changed files with 135 additions and 93 deletions
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4
arch/arm/plat-omap/include/mach/clock.h
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@@ -125,11 +125,13 @@ extern void clk_deny_idle(struct clk *clk);
extern int clk_get_usecount(struct clk *clk);
extern void clk_enable_init_clocks(void);
extern const struct clkops clkops_null;
/* Clock flags */
#define RATE_CKCTL (1 << 0) /* Main fixed ratio clocks */
#define RATE_FIXED (1 << 1) /* Fixed clock rate */
#define RATE_PROPAGATES (1 << 2) /* Program children too */
#define ALWAYS_ENABLED (1 << 4) /* Clock cannot be disabled */
/* bits 3-4 are free */
#define ENABLE_REG_32BIT (1 << 5) /* Use 32-bit access */
#define VIRTUAL_IO_ADDRESS (1 << 6) /* Clock in virtual address */
#define CLOCK_IDLE_CONTROL (1 << 7)