linux_dsm_epyc7002/drivers/gpu/drm/omapdrm/omap_connector.c
Daniel Vetter fcd70cd36b drm: Split out drm_probe_helper.h
Having the probe helper stuff (which pretty much everyone needs) in
the drm_crtc_helper.h file (which atomic drivers should never need) is
confusing. Split them out.

To make sure I actually achieved the goal here I went through all
drivers. And indeed, all atomic drivers are now free of
drm_crtc_helper.h includes.

v2: Make it compile. There was so much compile fail on arm drivers
that I figured I'll better not include any of the acks on v1.

v3: Massive rebase because i915 has lost a lot of drmP.h includes, but
not all: Through drm_crtc_helper.h > drm_modeset_helper.h -> drmP.h
there was still one, which this patch largely removes. Which means
rolling out lots more includes all over.

This will also conflict with ongoing drmP.h cleanup by others I
expect.

v3: Rebase on top of atomic bochs.

v4: Review from Laurent for bridge/rcar/omap/shmob/core bits:
- (re)move some of the added includes, use the better include files in
  other places (all suggested from Laurent adopted unchanged).
- sort alphabetically

v5: Actually try to sort them, and while at it, sort all the ones I
touch.

v6: Rebase onto i915 changes.

v7: Rebase once more.

Acked-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Acked-by: CK Hu <ck.hu@mediatek.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: virtualization@lists.linux-foundation.org
Cc: etnaviv@lists.freedesktop.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: intel-gfx@lists.freedesktop.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Cc: nouveau@lists.freedesktop.org
Cc: spice-devel@lists.freedesktop.org
Cc: amd-gfx@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-tegra@vger.kernel.org
Cc: xen-devel@lists.xen.org
Link: https://patchwork.freedesktop.org/patch/msgid/20190117210334.13234-1-daniel.vetter@ffwll.ch
2019-01-24 13:20:42 +01:00

404 lines
11 KiB
C

/*
* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
* Author: Rob Clark <rob@ti.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_probe_helper.h>
#include "omap_drv.h"
/*
* connector funcs
*/
#define to_omap_connector(x) container_of(x, struct omap_connector, base)
struct omap_connector {
struct drm_connector base;
struct omap_dss_device *output;
struct omap_dss_device *display;
struct omap_dss_device *hpd;
bool hdmi_mode;
};
static void omap_connector_hpd_notify(struct drm_connector *connector,
struct omap_dss_device *src,
enum drm_connector_status status)
{
if (status == connector_status_disconnected) {
/*
* If the source is an HDMI encoder, notify it of disconnection.
* This is required to let the HDMI encoder reset any internal
* state related to connection status, such as the CEC address.
*/
if (src && src->type == OMAP_DISPLAY_TYPE_HDMI &&
src->ops->hdmi.lost_hotplug)
src->ops->hdmi.lost_hotplug(src);
}
}
static void omap_connector_hpd_cb(void *cb_data,
enum drm_connector_status status)
{
struct omap_connector *omap_connector = cb_data;
struct drm_connector *connector = &omap_connector->base;
struct drm_device *dev = connector->dev;
enum drm_connector_status old_status;
mutex_lock(&dev->mode_config.mutex);
old_status = connector->status;
connector->status = status;
mutex_unlock(&dev->mode_config.mutex);
if (old_status == status)
return;
omap_connector_hpd_notify(connector, omap_connector->hpd, status);
drm_kms_helper_hotplug_event(dev);
}
void omap_connector_enable_hpd(struct drm_connector *connector)
{
struct omap_connector *omap_connector = to_omap_connector(connector);
struct omap_dss_device *hpd = omap_connector->hpd;
if (hpd)
hpd->ops->register_hpd_cb(hpd, omap_connector_hpd_cb,
omap_connector);
}
void omap_connector_disable_hpd(struct drm_connector *connector)
{
struct omap_connector *omap_connector = to_omap_connector(connector);
struct omap_dss_device *hpd = omap_connector->hpd;
if (hpd)
hpd->ops->unregister_hpd_cb(hpd);
}
bool omap_connector_get_hdmi_mode(struct drm_connector *connector)
{
struct omap_connector *omap_connector = to_omap_connector(connector);
return omap_connector->hdmi_mode;
}
static struct omap_dss_device *
omap_connector_find_device(struct drm_connector *connector,
enum omap_dss_device_ops_flag op)
{
struct omap_connector *omap_connector = to_omap_connector(connector);
struct omap_dss_device *dssdev;
for (dssdev = omap_connector->display; dssdev; dssdev = dssdev->src) {
if (dssdev->ops_flags & op)
return dssdev;
}
return NULL;
}
static enum drm_connector_status omap_connector_detect(
struct drm_connector *connector, bool force)
{
struct omap_connector *omap_connector = to_omap_connector(connector);
struct omap_dss_device *dssdev;
enum drm_connector_status status;
dssdev = omap_connector_find_device(connector,
OMAP_DSS_DEVICE_OP_DETECT);
if (dssdev) {
status = dssdev->ops->detect(dssdev)
? connector_status_connected
: connector_status_disconnected;
omap_connector_hpd_notify(connector, dssdev->src, status);
} else {
switch (omap_connector->display->type) {
case OMAP_DISPLAY_TYPE_DPI:
case OMAP_DISPLAY_TYPE_DBI:
case OMAP_DISPLAY_TYPE_SDI:
case OMAP_DISPLAY_TYPE_DSI:
status = connector_status_connected;
break;
default:
status = connector_status_unknown;
break;
}
}
VERB("%s: %d (force=%d)", omap_connector->display->name, status, force);
return status;
}
static void omap_connector_destroy(struct drm_connector *connector)
{
struct omap_connector *omap_connector = to_omap_connector(connector);
DBG("%s", omap_connector->display->name);
if (omap_connector->hpd) {
struct omap_dss_device *hpd = omap_connector->hpd;
hpd->ops->unregister_hpd_cb(hpd);
omapdss_device_put(hpd);
omap_connector->hpd = NULL;
}
drm_connector_unregister(connector);
drm_connector_cleanup(connector);
omapdss_device_put(omap_connector->output);
omapdss_device_put(omap_connector->display);
kfree(omap_connector);
}
#define MAX_EDID 512
static int omap_connector_get_modes_edid(struct drm_connector *connector,
struct omap_dss_device *dssdev)
{
struct omap_connector *omap_connector = to_omap_connector(connector);
enum drm_connector_status status;
void *edid;
int n;
status = omap_connector_detect(connector, false);
if (status != connector_status_connected)
goto no_edid;
edid = kzalloc(MAX_EDID, GFP_KERNEL);
if (!edid)
goto no_edid;
if (dssdev->ops->read_edid(dssdev, edid, MAX_EDID) <= 0 ||
!drm_edid_is_valid(edid)) {
kfree(edid);
goto no_edid;
}
drm_connector_update_edid_property(connector, edid);
n = drm_add_edid_modes(connector, edid);
omap_connector->hdmi_mode = drm_detect_hdmi_monitor(edid);
kfree(edid);
return n;
no_edid:
drm_connector_update_edid_property(connector, NULL);
return 0;
}
static int omap_connector_get_modes(struct drm_connector *connector)
{
struct omap_connector *omap_connector = to_omap_connector(connector);
struct omap_dss_device *dssdev;
struct drm_display_mode *mode;
struct videomode vm = {0};
DBG("%s", omap_connector->display->name);
/*
* If display exposes EDID, then we parse that in the normal way to
* build table of supported modes.
*/
dssdev = omap_connector_find_device(connector,
OMAP_DSS_DEVICE_OP_EDID);
if (dssdev)
return omap_connector_get_modes_edid(connector, dssdev);
/*
* Otherwise we have either a fixed resolution panel or an output that
* doesn't support modes discovery (e.g. DVI or VGA with the DDC bus
* unconnected, or analog TV). Start by querying the size.
*/
dssdev = omap_connector->display;
if (dssdev->driver && dssdev->driver->get_size)
dssdev->driver->get_size(dssdev,
&connector->display_info.width_mm,
&connector->display_info.height_mm);
/*
* Iterate over the pipeline to find the first device that can provide
* timing information. If we can't find any, we just let the KMS core
* add the default modes.
*/
for (dssdev = omap_connector->display; dssdev; dssdev = dssdev->src) {
if (dssdev->ops->get_timings)
break;
}
if (!dssdev)
return 0;
/* Add a single mode corresponding to the fixed panel timings. */
mode = drm_mode_create(connector->dev);
if (!mode)
return 0;
dssdev->ops->get_timings(dssdev, &vm);
drm_display_mode_from_videomode(&vm, mode);
mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
drm_mode_set_name(mode);
drm_mode_probed_add(connector, mode);
return 1;
}
static int omap_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct omap_connector *omap_connector = to_omap_connector(connector);
enum omap_channel channel = omap_connector->output->dispc_channel;
struct omap_drm_private *priv = connector->dev->dev_private;
struct omap_dss_device *dssdev;
struct videomode vm = {0};
struct drm_device *dev = connector->dev;
struct drm_display_mode *new_mode;
int r, ret = MODE_BAD;
drm_display_mode_to_videomode(mode, &vm);
mode->vrefresh = drm_mode_vrefresh(mode);
r = priv->dispc_ops->mgr_check_timings(priv->dispc, channel, &vm);
if (r)
goto done;
for (dssdev = omap_connector->output; dssdev; dssdev = dssdev->next) {
if (!dssdev->ops->check_timings)
continue;
r = dssdev->ops->check_timings(dssdev, &vm);
if (r)
goto done;
}
/* check if vrefresh is still valid */
new_mode = drm_mode_duplicate(dev, mode);
if (!new_mode)
return MODE_BAD;
new_mode->clock = vm.pixelclock / 1000;
new_mode->vrefresh = 0;
if (mode->vrefresh == drm_mode_vrefresh(new_mode))
ret = MODE_OK;
drm_mode_destroy(dev, new_mode);
done:
DBG("connector: mode %s: " DRM_MODE_FMT,
(ret == MODE_OK) ? "valid" : "invalid",
DRM_MODE_ARG(mode));
return ret;
}
static const struct drm_connector_funcs omap_connector_funcs = {
.reset = drm_atomic_helper_connector_reset,
.detect = omap_connector_detect,
.fill_modes = drm_helper_probe_single_connector_modes,
.destroy = omap_connector_destroy,
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static const struct drm_connector_helper_funcs omap_connector_helper_funcs = {
.get_modes = omap_connector_get_modes,
.mode_valid = omap_connector_mode_valid,
};
static int omap_connector_get_type(struct omap_dss_device *display)
{
switch (display->type) {
case OMAP_DISPLAY_TYPE_HDMI:
return DRM_MODE_CONNECTOR_HDMIA;
case OMAP_DISPLAY_TYPE_DVI:
return DRM_MODE_CONNECTOR_DVID;
case OMAP_DISPLAY_TYPE_DSI:
return DRM_MODE_CONNECTOR_DSI;
case OMAP_DISPLAY_TYPE_DPI:
case OMAP_DISPLAY_TYPE_DBI:
return DRM_MODE_CONNECTOR_DPI;
case OMAP_DISPLAY_TYPE_VENC:
/* TODO: This could also be composite */
return DRM_MODE_CONNECTOR_SVIDEO;
case OMAP_DISPLAY_TYPE_SDI:
return DRM_MODE_CONNECTOR_LVDS;
default:
return DRM_MODE_CONNECTOR_Unknown;
}
}
/* initialize connector */
struct drm_connector *omap_connector_init(struct drm_device *dev,
struct omap_dss_device *output,
struct omap_dss_device *display,
struct drm_encoder *encoder)
{
struct drm_connector *connector = NULL;
struct omap_connector *omap_connector;
struct omap_dss_device *dssdev;
DBG("%s", display->name);
omap_connector = kzalloc(sizeof(*omap_connector), GFP_KERNEL);
if (!omap_connector)
goto fail;
omap_connector->output = omapdss_device_get(output);
omap_connector->display = omapdss_device_get(display);
connector = &omap_connector->base;
connector->interlace_allowed = 1;
connector->doublescan_allowed = 0;
drm_connector_init(dev, connector, &omap_connector_funcs,
omap_connector_get_type(display));
drm_connector_helper_add(connector, &omap_connector_helper_funcs);
/*
* Initialize connector status handling. First try to find a device that
* supports hot-plug reporting. If it fails, fall back to a device that
* support polling. If that fails too, we don't support hot-plug
* detection at all.
*/
dssdev = omap_connector_find_device(connector, OMAP_DSS_DEVICE_OP_HPD);
if (dssdev) {
omap_connector->hpd = omapdss_device_get(dssdev);
connector->polled = DRM_CONNECTOR_POLL_HPD;
} else {
dssdev = omap_connector_find_device(connector,
OMAP_DSS_DEVICE_OP_DETECT);
if (dssdev)
connector->polled = DRM_CONNECTOR_POLL_CONNECT |
DRM_CONNECTOR_POLL_DISCONNECT;
}
return connector;
fail:
if (connector)
omap_connector_destroy(connector);
return NULL;
}