diff options
Diffstat (limited to 'arch/arm/mach-tegra/tegra124/clock.c')
-rw-r--r-- | arch/arm/mach-tegra/tegra124/clock.c | 64 |
1 files changed, 48 insertions, 16 deletions
diff --git a/arch/arm/mach-tegra/tegra124/clock.c b/arch/arm/mach-tegra/tegra124/clock.c index 84b679c1c5..5e4406102f 100644 --- a/arch/arm/mach-tegra/tegra124/clock.c +++ b/arch/arm/mach-tegra/tegra124/clock.c @@ -642,6 +642,51 @@ u32 *get_periph_source_reg(enum periph_id periph_id) } } +int get_periph_clock_info(enum periph_id periph_id, int *mux_bits, + int *divider_bits, int *type) +{ + enum periphc_internal_id internal_id; + + if (!clock_periph_id_isvalid(periph_id)) + return -1; + + internal_id = periph_id_to_internal_id[periph_id]; + if (!periphc_internal_id_isvalid(internal_id)) + return -1; + + *type = clock_periph_type[internal_id]; + if (!clock_type_id_isvalid(*type)) + return -1; + + *mux_bits = clock_source[*type][CLOCK_MAX_MUX]; + + if (*type == CLOCK_TYPE_PC2CC3M_T16) + *divider_bits = 16; + else + *divider_bits = 8; + + return 0; +} + +enum clock_id get_periph_clock_id(enum periph_id periph_id, int source) +{ + enum periphc_internal_id internal_id; + int type; + + if (!clock_periph_id_isvalid(periph_id)) + return CLOCK_ID_NONE; + + internal_id = periph_id_to_internal_id[periph_id]; + if (!periphc_internal_id_isvalid(internal_id)) + return CLOCK_ID_NONE; + + type = clock_periph_type[internal_id]; + if (!clock_type_id_isvalid(type)) + return CLOCK_ID_NONE; + + return clock_source[type][source]; +} + /** * Given a peripheral ID and the required source clock, this returns which * value should be programmed into the source mux for that peripheral. @@ -658,23 +703,10 @@ int get_periph_clock_source(enum periph_id periph_id, enum clock_id parent, int *mux_bits, int *divider_bits) { enum clock_type_id type; - enum periphc_internal_id internal_id; - int mux; - - assert(clock_periph_id_isvalid(periph_id)); - - internal_id = periph_id_to_internal_id[periph_id]; - assert(periphc_internal_id_isvalid(internal_id)); - - type = clock_periph_type[internal_id]; - assert(clock_type_id_isvalid(type)); + int mux, err; - *mux_bits = clock_source[type][CLOCK_MAX_MUX]; - - if (type == CLOCK_TYPE_PC2CC3M_T16) - *divider_bits = 16; - else - *divider_bits = 8; + err = get_periph_clock_info(periph_id, mux_bits, divider_bits, &type); + assert(!err); for (mux = 0; mux < CLOCK_MAX_MUX; mux++) if (clock_source[type][mux] == parent) |