On 1/13/2026 10:27 PM, Dmitry Baryshkov wrote:
> MDSS and GPU drivers use different approaches to get min_acc length.
> Add helper function that can be used by all the drivers.
>
> The helper reflects our current best guess, it blindly copies the
> approach adopted by the MDSS drivers and it matches current values
> selected by the GPU driver.
>
> Reviewed-by: Bryan O'Donoghue <[email protected]>
> Signed-off-by: Dmitry Baryshkov <[email protected]>
> ---
> include/linux/soc/qcom/ubwc.h | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/include/linux/soc/qcom/ubwc.h b/include/linux/soc/qcom/ubwc.h
> index f052e241736c..5bdeca18d54d 100644
> --- a/include/linux/soc/qcom/ubwc.h
> +++ b/include/linux/soc/qcom/ubwc.h
> @@ -74,4 +74,14 @@ static inline bool qcom_ubwc_get_ubwc_mode(const struct
> qcom_ubwc_cfg_data *cfg)
> return ret;
> }
>
> +/*
> + * This is the best guess, based on the MDSS driver, which worked so far.
> + */
> +static inline bool qcom_ubwc_min_acc_length_64b(const struct
> qcom_ubwc_cfg_data *cfg)
> +{
> + return cfg->ubwc_enc_version == UBWC_1_0 &&
> + (cfg->ubwc_dec_version == UBWC_2_0 ||
> + cfg->ubwc_dec_version == UBWC_3_0);
> +}
> +
> #endif /* __QCOM_UBWC_H__ */
>
Based on what I could check from video side, above looks correct.
Reviewed-by: Dikshita Agarwal <[email protected]>
Thanks,
Dikshita
