diff options
Diffstat (limited to 'drivers/dpll/zl3073x/core.h')
| -rw-r--r-- | drivers/dpll/zl3073x/core.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/dpll/zl3073x/core.h b/drivers/dpll/zl3073x/core.h index 09bca2d0926d..dddfcacea5c0 100644 --- a/drivers/dpll/zl3073x/core.h +++ b/drivers/dpll/zl3073x/core.h @@ -302,6 +302,36 @@ u8 zl3073x_dev_out_dpll_get(struct zl3073x_dev *zldev, u8 index) } /** + * zl3073x_dev_output_pin_freq_get - get output pin frequency + * @zldev: pointer to zl3073x device + * @id: output pin id + * + * Computes the output pin frequency based on the synth frequency, output + * divisor, and signal format. For N-div formats, N-pin frequency is + * additionally divided by esync_n_period. + * + * Return: frequency of the given output pin in Hz + */ +static inline u32 +zl3073x_dev_output_pin_freq_get(struct zl3073x_dev *zldev, u8 id) +{ + const struct zl3073x_synth *synth; + const struct zl3073x_out *out; + u8 out_id; + u32 freq; + + out_id = zl3073x_output_pin_out_get(id); + out = zl3073x_out_state_get(zldev, out_id); + synth = zl3073x_synth_state_get(zldev, zl3073x_out_synth_get(out)); + freq = zl3073x_synth_freq_get(synth) / out->div; + + if (zl3073x_out_is_ndiv(out) && zl3073x_is_n_pin(id)) + freq /= out->esync_n_period; + + return freq; +} + +/** * zl3073x_dev_out_is_diff - check if the given output is differential * @zldev: pointer to zl3073x device * @index: output index |