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Differential D12843 Diff 34482 sys/arm/allwinner/clkng/aw_clk.h

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sys/arm/allwinner/clkng/aw_clk.h

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(24MHz*N)/M (24MHz*N)/M
(24MHz*N*K/2) (24MHz*N*K/2)
(24MHz*N)/M (24MHz*N)/M
Periph clocks: Periph clocks:
Clock Source/Divider N/Divider M Clock Source/Divider N/Divider M
Clock Source/Divider N/Divider M/2 Clock Source/Divider N/Divider M/2
Clock Source * N/Divider M + 1/Divider P + 1
*/ */
struct aw_clk_init { struct aw_clk_init {
const char *name; const char *name;
const char *parent_name; const char *parent_name;
uint64_t default_freq; uint64_t default_freq;
bool enable; bool enable;
}; };
#define AW_CLK_HAS_GATE 0x0001 #define AW_CLK_HAS_GATE 0x0001
#define AW_CLK_HAS_LOCK 0x0002 #define AW_CLK_HAS_LOCK 0x0002
#define AW_CLK_HAS_MUX 0x0004 #define AW_CLK_HAS_MUX 0x0004
#define AW_CLK_REPARENT 0x0008 #define AW_CLK_REPARENT 0x0008
#define AW_CLK_SCALE_CHANGE 0x0010 #define AW_CLK_SCALE_CHANGE 0x0010
#define AW_CLK_HAS_FRAC 0x0020 #define AW_CLK_HAS_FRAC 0x0020
#define AW_CLK_HAS_UPDATE 0x0040 #define AW_CLK_HAS_UPDATE 0x0040
#define AW_CLK_FACTOR_POWER_OF_TWO 0x0001 #define AW_CLK_FACTOR_POWER_OF_TWO 0x0001
#define AW_CLK_FACTOR_ZERO_BASED 0x0002 #define AW_CLK_FACTOR_ZERO_BASED 0x0002
#define AW_CLK_FACTOR_HAS_COND 0x0004 #define AW_CLK_FACTOR_HAS_COND 0x0004
#define AW_CLK_FACTOR_FIXED 0x0008 #define AW_CLK_FACTOR_FIXED 0x0008
#define AW_CLK_FACTOR_POWER_OF_FOUR 0x0010
#define AW_CLK_FACTOR_HAS_BIT_COND 0x0020
struct aw_clk_factor { struct aw_clk_factor {
uint32_t shift; /* Shift bits for the factor */ uint32_t shift; /* Shift bits for the factor */
uint32_t mask; /* Mask to get the factor, will be override by the clk methods */ uint32_t mask; /* Mask to get the factor, will be override by the clk methods */
uint32_t width; /* Number of bits for the factor */ uint32_t width; /* Number of bits for the factor */
uint32_t value; /* Fixed value, depends on AW_CLK_FACTOR_FIXED */ uint32_t value; /* Fixed value, depends on AW_CLK_FACTOR_FIXED */
uint32_t cond_shift; uint32_t cond_shift;
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}; };
static inline uint32_t static inline uint32_t
aw_clk_get_factor(uint32_t val, struct aw_clk_factor *factor) aw_clk_get_factor(uint32_t val, struct aw_clk_factor *factor)
{ {
uint32_t factor_val; uint32_t factor_val;
uint32_t cond; uint32_t cond;
if (factor->flags & AW_CLK_FACTOR_HAS_COND) { if ((factor->flags & AW_CLK_FACTOR_HAS_COND) ||
(factor->flags & AW_CLK_FACTOR_HAS_BIT_COND)) {
cond = (val & factor->cond_mask) >> factor->cond_shift; cond = (val & factor->cond_mask) >> factor->cond_shift;
if (cond != factor->cond_value) if (!(factor->flags & AW_CLK_FACTOR_HAS_BIT_COND) &&
cond != factor->cond_value)
return (1); return (1);
if ((factor->flags & AW_CLK_FACTOR_HAS_BIT_COND) &&
(cond & factor->cond_value) == 0)
return (1);
} }
if (factor->flags & AW_CLK_FACTOR_FIXED) if (factor->flags & AW_CLK_FACTOR_FIXED)
return (factor->value); return (factor->value);
factor_val = (val & factor->mask) >> factor->shift; factor_val = (val & factor->mask) >> factor->shift;
if (!(factor->flags & AW_CLK_FACTOR_ZERO_BASED)) if (!(factor->flags & AW_CLK_FACTOR_ZERO_BASED))
factor_val += 1; factor_val += 1;
else if (factor->flags & AW_CLK_FACTOR_POWER_OF_TWO) else if (factor->flags & AW_CLK_FACTOR_POWER_OF_TWO)
factor_val = 1 << factor_val; factor_val = 1 << factor_val;
else if (factor->flags & AW_CLK_FACTOR_POWER_OF_FOUR)
factor_val = 1 << (2 * factor_val);
return (factor_val); return (factor_val);
} }
static inline uint32_t static inline uint32_t
aw_clk_factor_get_incremented(uint32_t val, struct aw_clk_factor *factor)
{
if (factor->flags & AW_CLK_FACTOR_POWER_OF_TWO)
return (val << 1);
else if (factor->flags & AW_CLK_FACTOR_POWER_OF_FOUR)
return (val << 2);
else
return (val + 1);
}
static inline uint32_t
aw_clk_factor_get_max(struct aw_clk_factor *factor) aw_clk_factor_get_max(struct aw_clk_factor *factor)
{ {
uint32_t max; uint32_t max;
if (factor->flags & AW_CLK_FACTOR_FIXED) if (factor->flags & AW_CLK_FACTOR_FIXED)
max = factor->value; max = factor->value;
else if (factor->flags & AW_CLK_FACTOR_POWER_OF_TWO) else if (factor->flags & AW_CLK_FACTOR_POWER_OF_TWO)
max = 1 << ((1 << factor->width) - 1); max = 1 << ((1 << factor->width) - 1);
else if (factor->flags & AW_CLK_FACTOR_POWER_OF_FOUR)
max = 1 << (2 * ((1 << factor->width) - 1));
else { else {
max = (1 << factor->width); max = (1 << factor->width);
} }
return (max); return (max);
} }
static inline uint32_t static inline uint32_t
Show All 19 Linesaw_clk_factor_get_value(struct aw_clk_factor *factor, uint32_t raw)
if (factor->flags & AW_CLK_FACTOR_FIXED) if (factor->flags & AW_CLK_FACTOR_FIXED)
return (factor->value); return (factor->value);
if (factor->flags & AW_CLK_FACTOR_ZERO_BASED) if (factor->flags & AW_CLK_FACTOR_ZERO_BASED)
val = raw; val = raw;
else if (factor->flags & AW_CLK_FACTOR_POWER_OF_TWO) { else if (factor->flags & AW_CLK_FACTOR_POWER_OF_TWO) {
for (val = 0; raw != 1; val++) for (val = 0; raw != 1; val++)
raw >>= 1; raw >>= 1;
} else if (factor->flags & AW_CLK_FACTOR_POWER_OF_FOUR) {
for (val = 0; raw != 1; val++)
raw >>= 2;
} else } else
val = raw - 1; val = raw - 1;
return (val); return (val);
} }
#define CCU_RESET(idx, o, s) \ #define CCU_RESET(idx, o, s) \
[idx] = { \ [idx] = { \
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