On Mon, Dec 02, 2019 at 03:27:51AM -0800, Devarsh Thakkar wrote:
> Add function to derive floating value of vertical
> refresh rate from drm mode using pixel clock,
> horizontal total size and vertical total size.
>
> Use this function to find suitable mode having vrefresh
> value which is matching with user provided vrefresh value.
>
> If user doesn't provide any vrefresh value in args then
> update vertical refresh rate value in pipe args using this
> function.
>
> Also use this function for printing floating vrefresh while
> dumping all available modes.
>
> This will give more accurate picture to user for available modes
> differentiated by floating vertical refresh rate and help user
> select more appropriate mode using suitable refresh rate value.
>
> V3: Change name of function used to derive refresh rate.
> V2: 1) Don't use inline function for deriving refresh rate from mode.
> 2) If requested mode not found, print refresh rate only
> if user had provided it in args.
>
> Signed-off-by: Devarsh Thakkar <devarsh.thakkar@xxxxxxxxxx>
> ---
> tests/modetest/modetest.c | 40 +++++++++++++++++++++++++++-------------
> 1 file changed, 27 insertions(+), 13 deletions(-)
>
> diff --git a/tests/modetest/modetest.c b/tests/modetest/modetest.c
> index b4edfcb..19ce20f 100644
> --- a/tests/modetest/modetest.c
> +++ b/tests/modetest/modetest.c
> @@ -133,6 +133,12 @@ static inline int64_t U642I64(uint64_t val)
> return (int64_t)*((int64_t *)&val);
> }
>
> +static float mode_vrefresh(drmModeModeInfo *mode)
> +{
> + return mode->clock * 1000.00
> + / (mode->htotal * mode->vtotal);
> +}
> +
> #define bit_name_fn(res) \
> const char * res##_str(int type) { \
> unsigned int i; \
> @@ -210,9 +216,9 @@ static void dump_encoders(struct device *dev)
>
> static void dump_mode(drmModeModeInfo *mode)
> {
> - printf(" %s %d %d %d %d %d %d %d %d %d %d",
> + printf(" %s %.2f %d %d %d %d %d %d %d %d %d",
> mode->name,
> - mode->vrefresh,
> + mode_vrefresh(mode),
> mode->hdisplay,
> mode->hsync_start,
> mode->hsync_end,
> @@ -823,12 +829,11 @@ struct plane_arg {
>
> static drmModeModeInfo *
> connector_find_mode(struct device *dev, uint32_t con_id, const char *mode_str,
> - const float vrefresh)
> + float *vrefresh)
This change still looks pointless.
> {
> drmModeConnector *connector;
> drmModeModeInfo *mode;
> int i;
> - float mode_vrefresh;
>
> connector = get_connector_by_id(dev, con_id);
> if (!connector || !connector->count_modes)
> @@ -837,16 +842,19 @@ connector_find_mode(struct device *dev, uint32_t con_id, const char *mode_str,
> for (i = 0; i < connector->count_modes; i++) {
> mode = &connector->modes[i];
> if (!strcmp(mode->name, mode_str)) {
> - /* If the vertical refresh frequency is not specified then return the
> - * first mode that match with the name. Else, return the mode that match
> - * the name and the specified vertical refresh frequency.
> + /* If the vertical refresh frequency is not specified
> + * then return the first mode that match with the name
> + * and update corresponding vrefresh in pipe_arg.
> + * Else, return the mode that match the name and
> + * the specified vertical refresh frequency.
> */
> - mode_vrefresh = mode->clock * 1000.00
> - / (mode->htotal * mode->vtotal);
> - if (vrefresh == 0)
> + if (*vrefresh == 0) {
> + *vrefresh = mode_vrefresh(mode);
> return mode;
> - else if (fabs(mode_vrefresh - vrefresh) < 0.005)
> + } else if (fabs(mode_vrefresh(mode)
> + - *vrefresh) < 0.005) {
> return mode;
> + }
> }
> }
>
> @@ -909,9 +917,15 @@ static int pipe_find_crtc_and_mode(struct device *dev, struct pipe_arg *pipe)
>
> for (i = 0; i < (int)pipe->num_cons; i++) {
> mode = connector_find_mode(dev, pipe->con_ids[i],
> - pipe->mode_str, pipe->vrefresh);
> + pipe->mode_str, &pipe->vrefresh);
> if (mode == NULL) {
> - fprintf(stderr,
> + if (pipe->vrefresh)
> + fprintf(stderr,
> + "failed to find mode "
> + "\"%s-%.2fHz\" for connector %s\n",
> + pipe->mode_str, pipe->vrefresh, pipe->cons[i]);
> + else
> + fprintf(stderr,
> "failed to find mode \"%s\" for connector %s\n",
> pipe->mode_str, pipe->cons[i]);
> return -EINVAL;
> --
> 2.7.4
--
Ville Syrjälä
Intel
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