diff options
| author | Philipp Zabel <p.zabel@pengutronix.de> | 2014-12-11 18:32:45 +0100 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2015-04-02 19:04:13 +0200 |
| commit | a5d3e625148073587955bb0c49dbbba231b3234a (patch) | |
| tree | 3d3290b9ff80396f62c1074da7d7851e5c46b540 /drivers/gpu/drm | |
| parent | 2938931f3732a4ec70c299e221ec8dea01dfd796 (diff) | |
drm/panel: simple: Add display timing support
The simple panel driver's ->get_modes() implementation calculates the
display mode list from the typical timings and the ->get_timings()
implementation returns the timings to the connected encoder for mode
validation and fixup.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
[treding@nvidia.com: select VIDEOMODE_HELPERS]
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/panel/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/panel/panel-simple.c | 42 |
2 files changed, 43 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig index d84583776d50..6d64c7bb908b 100644 --- a/drivers/gpu/drm/panel/Kconfig +++ b/drivers/gpu/drm/panel/Kconfig @@ -11,6 +11,7 @@ config DRM_PANEL_SIMPLE tristate "support for simple panels" depends on OF depends on BACKLIGHT_CLASS_DEVICE + select VIDEOMODE_HELPERS help DRM panel driver for dumb panels that need at most a regulator and a GPIO to be powered up. Optionally a backlight can be attached so diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c index d9491bc8f9a4..be2c4c85ea83 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -33,9 +33,14 @@ #include <drm/drm_mipi_dsi.h> #include <drm/drm_panel.h> +#include <video/display_timing.h> +#include <video/videomode.h> + struct panel_desc { const struct drm_display_mode *modes; unsigned int num_modes; + const struct display_timing *timings; + unsigned int num_timings; unsigned int bpc; @@ -94,6 +99,25 @@ static int panel_simple_get_fixed_modes(struct panel_simple *panel) if (!panel->desc) return 0; + for (i = 0; i < panel->desc->num_timings; i++) { + const struct display_timing *dt = &panel->desc->timings[i]; + struct videomode vm; + + videomode_from_timing(dt, &vm); + mode = drm_mode_create(drm); + if (!mode) { + dev_err(drm->dev, "failed to add mode %ux%u\n", + dt->hactive.typ, dt->vactive.typ); + continue; + } + + drm_display_mode_from_videomode(&vm, mode); + drm_mode_set_name(mode); + + drm_mode_probed_add(connector, mode); + num++; + } + for (i = 0; i < panel->desc->num_modes; i++) { const struct drm_display_mode *m = &panel->desc->modes[i]; @@ -226,12 +250,30 @@ static int panel_simple_get_modes(struct drm_panel *panel) return num; } +static int panel_simple_get_timings(struct drm_panel *panel, + unsigned int num_timings, + struct display_timing *timings) +{ + struct panel_simple *p = to_panel_simple(panel); + unsigned int i; + + if (p->desc->num_timings < num_timings) + num_timings = p->desc->num_timings; + + if (timings) + for (i = 0; i < num_timings; i++) + timings[i] = p->desc->timings[i]; + + return p->desc->num_timings; +} + static const struct drm_panel_funcs panel_simple_funcs = { .disable = panel_simple_disable, .unprepare = panel_simple_unprepare, .prepare = panel_simple_prepare, .enable = panel_simple_enable, .get_modes = panel_simple_get_modes, + .get_timings = panel_simple_get_timings, }; static int panel_simple_probe(struct device *dev, const struct panel_desc *desc) |