On 11/09/2023 15:14, Bryan O'Donoghue wrote:
> The number of Video Front End - VFE or Image Front End - IFE supported
> with new SoCs can vary both for the full and lite cases.
>
> For example sdm845 has one vfe_lite and two vfe interfaces with the vfe
> clock called simply "vfe_lite" with no integer postfix. sc8280xp has four
> vfe and four vfe lite blocks.
>
> At the moment we declare vfe_lite0 and vfe_lite1 for sm8250 but never set
> those clocks because we don't match the strings.
>
> We need to support the following clock name formats
>
> - vfeN
> - vfe_liteN
> - vfe_lite
>
> with N being any reasonably sized integer.
>
> There are two sites in this code which need to do the same thing,
> constructing and matching strings with the pattern above, so encapsulate
> the logic in one function.
>
> Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
> ---
> drivers/media/platform/qcom/camss/camss-vfe.c | 22 ++++++++++++++-----
> 1 file changed, 16 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c
> index db8f68819ded9..f3cf387e4907e 100644
> --- a/drivers/media/platform/qcom/camss/camss-vfe.c
> +++ b/drivers/media/platform/qcom/camss/camss-vfe.c
> @@ -431,6 +431,20 @@ void vfe_isr_reset_ack(struct vfe_device *vfe)
> complete(&vfe->reset_complete);
> }
>
> +static int vfe_match_clock_names(struct vfe_device *vfe,
> + struct camss_clock *clock)
> +{
> + char vfe_name[6]; /* vfeXX\0 */
> + char vfe_lite_name[11]; /* vfe_liteXX\0 */
> +
> + snprintf(vfe_name, sizeof(vfe_name), "vfe%d", vfe->id);
> + snprintf(vfe_lite_name, sizeof(vfe_lite_name), "vfe_lite%d", vfe->id);
> +
> + return (!strcmp(clock->name, vfe_name) ||
> + !strcmp(clock->name, vfe_lite_name) ||
> + !strcmp(clock->name, "vfe_lite"));
> +}
I'm getting this compiler warning:
drivers/media/platform/qcom/camss/camss-vfe.c: In function 'vfe_match_clock_names':
drivers/media/platform/qcom/camss/camss-vfe.c:483:52: warning: 'snprintf' output may be truncated before the last format character [-Wformat-truncation=]
483 | snprintf(vfe_name, sizeof(vfe_name), "vfe%d", vfe->id);
| ^
Since vfe->id is a u8 I would just increase both the vfe_name and vfe_lite_name
sizes by 1.
Regards,
Hans
> +
> /*
> * vfe_set_clock_rates - Calculate and set clock rates on VFE module
> * @vfe: VFE device
> @@ -454,9 +468,7 @@ static int vfe_set_clock_rates(struct vfe_device *vfe)
> for (i = 0; i < vfe->nclocks; i++) {
> struct camss_clock *clock = &vfe->clock[i];
>
> - if (!strcmp(clock->name, "vfe0") ||
> - !strcmp(clock->name, "vfe1") ||
> - !strcmp(clock->name, "vfe_lite")) {
> + if (vfe_match_clock_names(vfe, clock)) {
> u64 min_rate = 0;
> long rate;
>
> @@ -537,9 +549,7 @@ static int vfe_check_clock_rates(struct vfe_device *vfe)
> for (i = 0; i < vfe->nclocks; i++) {
> struct camss_clock *clock = &vfe->clock[i];
>
> - if (!strcmp(clock->name, "vfe0") ||
> - !strcmp(clock->name, "vfe1") ||
> - !strcmp(clock->name, "vfe_lite")) {
> + if (vfe_match_clock_names(vfe, clock)) {
> u64 min_rate = 0;
> unsigned long rate;
>
