Files
android_kernel_xiaomi_sm8450/drivers/gpu/drm/omapdrm/omap_encoder.c
Ville Syrjälä 13d0add333 drm/edid: Pass connector to AVI infoframe functions
Make life easier for drivers by simply passing the connector
to drm_hdmi_avi_infoframe_from_display_mode() and
drm_hdmi_avi_infoframe_quant_range(). That way drivers don't
need to worry about is_hdmi2_sink mess.

v2: Make is_hdmi2_sink() return true for sil-sii8620
    Adapt to omap/vc4 changes

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "David (ChunMing) Zhou" <David1.Zhou@amd.com>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: Seung-Woo Kim <sw0312.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: CK Hu <ck.hu@mediatek.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Sandy Huang <hjc@rock-chips.com>
Cc: "Heiko Stübner" <heiko@sntech.de>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: amd-gfx@lists.freedesktop.org
Cc: linux-arm-msm@vger.kernel.org
Cc: freedreno@lists.freedesktop.org
Cc: nouveau@lists.freedesktop.org
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190108172828.15184-1-ville.syrjala@linux.intel.com
2019-01-10 19:01:06 +02:00

231 lines
6.5 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 <linux/list.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_edid.h>
#include "omap_drv.h"
/*
* encoder funcs
*/
#define to_omap_encoder(x) container_of(x, struct omap_encoder, base)
/* The encoder and connector both map to same dssdev.. the encoder
* handles the 'active' parts, ie. anything the modifies the state
* of the hw, and the connector handles the 'read-only' parts, like
* detecting connection and reading edid.
*/
struct omap_encoder {
struct drm_encoder base;
struct omap_dss_device *output;
struct omap_dss_device *display;
};
static void omap_encoder_destroy(struct drm_encoder *encoder)
{
struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
drm_encoder_cleanup(encoder);
kfree(omap_encoder);
}
static const struct drm_encoder_funcs omap_encoder_funcs = {
.destroy = omap_encoder_destroy,
};
static void omap_encoder_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_device *dev = encoder->dev;
struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
struct drm_connector *connector;
struct omap_dss_device *dssdev;
struct videomode vm = { 0 };
bool hdmi_mode;
int r;
drm_display_mode_to_videomode(adjusted_mode, &vm);
/*
* HACK: This fixes the vm flags.
* struct drm_display_mode does not contain the VSYNC/HSYNC/DE flags and
* they get lost when converting back and forth between struct
* drm_display_mode and struct videomode. The hack below goes and
* fetches the missing flags.
*
* A better solution is to use DRM's bus-flags through the whole driver.
*/
for (dssdev = omap_encoder->output; dssdev; dssdev = dssdev->next) {
unsigned long bus_flags = dssdev->bus_flags;
if (!(vm.flags & (DISPLAY_FLAGS_DE_LOW |
DISPLAY_FLAGS_DE_HIGH))) {
if (bus_flags & DRM_BUS_FLAG_DE_LOW)
vm.flags |= DISPLAY_FLAGS_DE_LOW;
else if (bus_flags & DRM_BUS_FLAG_DE_HIGH)
vm.flags |= DISPLAY_FLAGS_DE_HIGH;
}
if (!(vm.flags & (DISPLAY_FLAGS_PIXDATA_POSEDGE |
DISPLAY_FLAGS_PIXDATA_NEGEDGE))) {
if (bus_flags & DRM_BUS_FLAG_PIXDATA_POSEDGE)
vm.flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE;
else if (bus_flags & DRM_BUS_FLAG_PIXDATA_NEGEDGE)
vm.flags |= DISPLAY_FLAGS_PIXDATA_NEGEDGE;
}
if (!(vm.flags & (DISPLAY_FLAGS_SYNC_POSEDGE |
DISPLAY_FLAGS_SYNC_NEGEDGE))) {
if (bus_flags & DRM_BUS_FLAG_SYNC_POSEDGE)
vm.flags |= DISPLAY_FLAGS_SYNC_POSEDGE;
else if (bus_flags & DRM_BUS_FLAG_SYNC_NEGEDGE)
vm.flags |= DISPLAY_FLAGS_SYNC_NEGEDGE;
}
}
/* Set timings for all devices in the display pipeline. */
dss_mgr_set_timings(omap_encoder->output, &vm);
for (dssdev = omap_encoder->output; dssdev; dssdev = dssdev->next) {
if (dssdev->ops->set_timings)
dssdev->ops->set_timings(dssdev, &vm);
}
/* Set the HDMI mode and HDMI infoframe if applicable. */
hdmi_mode = false;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
if (connector->encoder == encoder) {
hdmi_mode = omap_connector_get_hdmi_mode(connector);
break;
}
}
dssdev = omap_encoder->output;
if (dssdev->ops->hdmi.set_hdmi_mode)
dssdev->ops->hdmi.set_hdmi_mode(dssdev, hdmi_mode);
if (hdmi_mode && dssdev->ops->hdmi.set_infoframe) {
struct hdmi_avi_infoframe avi;
r = drm_hdmi_avi_infoframe_from_display_mode(&avi, connector,
adjusted_mode);
if (r == 0)
dssdev->ops->hdmi.set_infoframe(dssdev, &avi);
}
}
static void omap_encoder_disable(struct drm_encoder *encoder)
{
struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
struct omap_dss_device *dssdev = omap_encoder->display;
dssdev->ops->disable(dssdev);
}
static void omap_encoder_enable(struct drm_encoder *encoder)
{
struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
struct omap_dss_device *dssdev = omap_encoder->display;
int r;
r = dssdev->ops->enable(dssdev);
if (r)
dev_err(encoder->dev->dev,
"Failed to enable display '%s': %d\n",
dssdev->name, r);
}
static int omap_encoder_atomic_check(struct drm_encoder *encoder,
struct drm_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
enum omap_channel channel = omap_encoder->output->dispc_channel;
struct drm_device *dev = encoder->dev;
struct omap_drm_private *priv = dev->dev_private;
struct omap_dss_device *dssdev;
struct videomode vm = { 0 };
int ret;
drm_display_mode_to_videomode(&crtc_state->mode, &vm);
ret = priv->dispc_ops->mgr_check_timings(priv->dispc, channel, &vm);
if (ret)
goto done;
for (dssdev = omap_encoder->output; dssdev; dssdev = dssdev->next) {
if (!dssdev->ops->check_timings)
continue;
ret = dssdev->ops->check_timings(dssdev, &vm);
if (ret)
goto done;
}
drm_display_mode_from_videomode(&vm, &crtc_state->adjusted_mode);
done:
if (ret)
dev_err(dev->dev, "invalid timings: %d\n", ret);
return ret;
}
static const struct drm_encoder_helper_funcs omap_encoder_helper_funcs = {
.mode_set = omap_encoder_mode_set,
.disable = omap_encoder_disable,
.enable = omap_encoder_enable,
.atomic_check = omap_encoder_atomic_check,
};
/* initialize encoder */
struct drm_encoder *omap_encoder_init(struct drm_device *dev,
struct omap_dss_device *output,
struct omap_dss_device *display)
{
struct drm_encoder *encoder = NULL;
struct omap_encoder *omap_encoder;
omap_encoder = kzalloc(sizeof(*omap_encoder), GFP_KERNEL);
if (!omap_encoder)
goto fail;
omap_encoder->output = output;
omap_encoder->display = display;
encoder = &omap_encoder->base;
drm_encoder_init(dev, encoder, &omap_encoder_funcs,
DRM_MODE_ENCODER_TMDS, NULL);
drm_encoder_helper_add(encoder, &omap_encoder_helper_funcs);
return encoder;
fail:
if (encoder)
omap_encoder_destroy(encoder);
return NULL;
}