Den 15.06.2019 17.40, skrev Noralf Trønnes:
>
>
> Den 14.06.2019 14.13, skrev Maxime Ripard:
>> Properly configuring the overscan properties might be needed for the
>> initial setup of the framebuffer for display that still have overscan.
>> Let's allow for more properties on the kernel command line to setup each
>> margin.
>
> This also needs to be documented in Documentation/fb/modedb.txt
>
>>
>> Reviewed-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
>> Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxx>
>> ---
>> drivers/gpu/drm/drm_modes.c | 44 ++++++++++++++++++++++++++++++++++++++-
>> include/drm/drm_connector.h | 12 +++++-----
>> 2 files changed, 50 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
>> index b92b7df6784a..25d2ba595750 100644
>> --- a/drivers/gpu/drm/drm_modes.c
>> +++ b/drivers/gpu/drm/drm_modes.c
>> @@ -1609,6 +1609,50 @@ static int drm_mode_parse_cmdline_options(char *str, size_t len,
>> } else if (!strncmp(option, "reflect_y", delim - option)) {
>> rotation |= DRM_MODE_REFLECT_Y;
>> sep = delim;
>> + } else if (!strncmp(option, "margin_right", delim - option)) {
>
> I wonder if this should be called tv_margin_right to distinguish it from
> 'm' (the mode specifier) which also is a margin? Or can these margins be
> reused on other display types later on? A little stupid to have both
> 'tv_margin_right' and 'margin_right'.
And after a nights sleep I think 'margin_right' is just fine as long as
it's documented in modedb.txt as TV margins.
So with an modedb.txt entry and the struct change moved to patch 8:
Reviewed-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
>
>> + const char *value = delim + 1;
>> + unsigned int margin;
>> +
>> + margin = simple_strtol(value, &sep, 10);
>> +
>> + /* Make sure we have parsed something */
>> + if (sep == value)
>> + return -EINVAL;
>> +
>> + mode->tv_margins.right = margin;
>> + } else if (!strncmp(option, "margin_left", delim - option)) {
>> + const char *value = delim + 1;
>> + unsigned int margin;
>> +
>> + margin = simple_strtol(value, &sep, 10);
>> +
>> + /* Make sure we have parsed something */
>> + if (sep == value)
>> + return -EINVAL;
>> +
>> + mode->tv_margins.left = margin;
>> + } else if (!strncmp(option, "margin_top", delim - option)) {
>> + const char *value = delim + 1;
>> + unsigned int margin;
>> +
>> + margin = simple_strtol(value, &sep, 10);
>> +
>> + /* Make sure we have parsed something */
>> + if (sep == value)
>> + return -EINVAL;
>> +
>> + mode->tv_margins.top = margin;
>> + } else if (!strncmp(option, "margin_bottom", delim - option)) {
>> + const char *value = delim + 1;
>> + unsigned int margin;
>> +
>> + margin = simple_strtol(value, &sep, 10);
>> +
>> + /* Make sure we have parsed something */
>> + if (sep == value)
>> + return -EINVAL;
>> +
>> + mode->tv_margins.bottom = margin;
>> } else {
>> return -EINVAL;
>> }
>> diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
>> index c58a35b34c1a..6841c46e6781 100644
>> --- a/include/drm/drm_connector.h
>> +++ b/include/drm/drm_connector.h
>> @@ -505,12 +505,7 @@ struct drm_connector_tv_margins {
>> */
>> struct drm_tv_connector_state {
>> enum drm_mode_subconnector subconnector;
>> - struct {
>> - unsigned int left;
>> - unsigned int right;
>> - unsigned int top;
>> - unsigned int bottom;
>> - } margins;
>> + struct drm_connector_tv_margins margins;
>> unsigned int mode;
>> unsigned int brightness;
>> unsigned int contrast;
>
> As mentioned this needs moving to patch 8.
>
> Noralf.
>
>> @@ -1039,6 +1034,11 @@ struct drm_cmdline_mode {
>> * DRM_MODE_ROTATE_180 are supported at the moment.
>> */
>> unsigned int rotation;
>> +
>> + /**
>> + * @tv_margins: TV margins to apply to the mode.
>> + */
>> + struct drm_connector_tv_margins tv_margins;
>> };
>>
>> /**
>>
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