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drm/panel: simple: document panel_desc; rename a few functions

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This attempts to address outstanding review feedback from
commit b8a2948fa2 ("drm/panel: simple: Add ability to override typical timing")

Specifically:

* It was requested that I document (in the structure definition) that
  the device tree override had no effect if 'struct drm_display_mode'
  was used in the panel description.  I have provided full Doxygen
  comments for 'struct panel_desc' to accomplish that.
* panel_simple_get_fixed_modes() was thought to be a confusing name,
  so it has been renamed to panel_simple_get_display_modes().
* panel_simple_parse_override_mode() was thought to be better named as
  panel_simple_parse_panel_timing_node().

Suggested-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190712163333.231884-1-dianders@chromium.org
This commit is contained in:
Douglas Anderson 2019-07-12 09:33:33 -07:00 committed by Sam Ravnborg
parent 57a1b08937
commit e362cc6a24
1 changed files with 22 additions and 6 deletions
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28
drivers/gpu/drm/panel/panel-simple.c
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@ -38,6 +38,22 @@
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_panel.h>
/**
* @modes: Pointer to array of fixed modes appropriate for this panel. If
* only one mode then this can just be the address of this the mode.
* NOTE: cannot be used with "timings" and also if this is specified
* then you cannot override the mode in the device tree.
* @num_modes: Number of elements in modes array.
* @timings: Pointer to array of display timings. NOTE: cannot be used with
* "modes" and also these will be used to validate a device tree
* override if one is present.
* @num_timings: Number of elements in timings array.
* @bpc: Bits per color.
* @size: Structure containing the physical size of this panel.
* @delay: Structure containing various delay values for this panel.
* @bus_format: See MEDIA_BUS_FMT_... defines.
* @bus_flags: See DRM_BUS_FLAG_... defines.
*/
struct panel_desc {
const struct drm_display_mode *modes;
unsigned int num_modes;
@ -135,7 +151,7 @@ static unsigned int panel_simple_get_timings_modes(struct panel_simple *panel)
return num;
}
static unsigned int panel_simple_get_fixed_modes(struct panel_simple *panel)
static unsigned int panel_simple_get_display_modes(struct panel_simple *panel)
{
struct drm_connector *connector = panel->base.connector;
struct drm_device *drm = panel->base.drm;
@ -199,7 +215,7 @@ static int panel_simple_get_non_edid_modes(struct panel_simple *panel)
*/
WARN_ON(panel->desc->num_timings && panel->desc->num_modes);
if (num == 0)
num = panel_simple_get_fixed_modes(panel);
num = panel_simple_get_display_modes(panel);
connector->display_info.bpc = panel->desc->bpc;
connector->display_info.width_mm = panel->desc->size.width;
@ -351,9 +367,9 @@ static const struct drm_panel_funcs panel_simple_funcs = {
#define PANEL_SIMPLE_BOUNDS_CHECK(to_check, bounds, field) \
(to_check->field.typ >= bounds->field.min && \
to_check->field.typ <= bounds->field.max)
static void panel_simple_parse_override_mode(struct device *dev,
struct panel_simple *panel,
const struct display_timing *ot)
static void panel_simple_parse_panel_timing_node(struct device *dev,
struct panel_simple *panel,
const struct display_timing *ot)
{
const struct panel_desc *desc = panel->desc;
struct videomode vm;
@ -446,7 +462,7 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
}
if (!of_get_display_timing(dev->of_node, "panel-timing", &dt))
panel_simple_parse_override_mode(dev, panel, &dt);
panel_simple_parse_panel_timing_node(dev, panel, &dt);
drm_panel_init(&panel->base);
panel->base.dev = dev;