Jacopo Mondi <jacopo@xxxxxxxxxx> writes:
> Now that the V4L2_LINK_FREQUENCY control is available, use it to
> configure the sensor pixel rate.
>
> Adjust the default pixel rate to match the first listed link_frequency.
> @@ -330,10 +333,21 @@ static u32 calc_pll(struct ar0521_dev *sensor, u32 freq, u16 *pre_ptr, u16 *mult
> static void ar0521_calc_mode(struct ar0521_dev *sensor)
> {
> unsigned int pixel_clock;
> + unsigned int link_freq;
> + s64 frequency;
> + u32 pixel_rate;
> u16 pre, mult;
> u32 vco;
> int bpp;
>
> + /* Update the PIXEL_RATE value using the desired link_frequency. */
> + bpp = ar0521_code_to_bpp(sensor);
> + link_freq = sensor->ctrls.link_freq->val;
> + frequency = ar0521_link_frequencies[link_freq];
> + pixel_rate = frequency * sensor->lane_count * 2 / bpp;
Must be that div64 thing.
> +
> + __v4l2_ctrl_s_ctrl_int64(sensor->ctrls.pixrate, pixel_rate);
> +
--
Krzysztof "Chris" Hałasa
Sieć Badawcza Łukasiewicz
Przemysłowy Instytut Automatyki i Pomiarów PIAP
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