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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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6ab10b76ff
It was added way back together with the dirty_fb ioctl, but neither
generic xfree86-modesetting nor the vmware driver use it. Everyone is
supposed to just unconditionally call the dirtyfb when they do
frontbuffer rendering.
And since unused uabi is bad uabi (there's reasons we require open
source userspace for everything) let's nuke this.
For reference see
commit 884840aa3c
Author: Jakob Bornecrantz <jakob@vmware.com>
Date: Thu Dec 3 23:25:47 2009 +0000
drm: Add dirty ioctl and property
Cc: Jakob Bornecrantz <jakob@vmware.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Sinclair Yeh <syeh@vmware.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Acked-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1471034937-651-9-git-send-email-daniel.vetter@ffwll.ch
155 lines
3.7 KiB
C
155 lines
3.7 KiB
C
/*
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* Copyright (C) 2012 Red Hat
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* based in parts on udlfb.c:
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* Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
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* Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
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* Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License v2. See the file COPYING in the main directory of this archive for
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* more details.
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*/
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_edid.h>
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#include <drm/drm_crtc_helper.h>
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#include "udl_drv.h"
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/* dummy connector to just get EDID,
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all UDL appear to have a DVI-D */
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static u8 *udl_get_edid(struct udl_device *udl)
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{
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u8 *block;
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char *rbuf;
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int ret, i;
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block = kmalloc(EDID_LENGTH, GFP_KERNEL);
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if (block == NULL)
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return NULL;
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rbuf = kmalloc(2, GFP_KERNEL);
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if (rbuf == NULL)
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goto error;
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for (i = 0; i < EDID_LENGTH; i++) {
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ret = usb_control_msg(udl->udev,
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usb_rcvctrlpipe(udl->udev, 0), (0x02),
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(0x80 | (0x02 << 5)), i << 8, 0xA1, rbuf, 2,
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HZ);
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if (ret < 1) {
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DRM_ERROR("Read EDID byte %d failed err %x\n", i, ret);
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goto error;
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}
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block[i] = rbuf[1];
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}
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kfree(rbuf);
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return block;
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error:
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kfree(block);
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kfree(rbuf);
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return NULL;
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}
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static int udl_get_modes(struct drm_connector *connector)
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{
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struct udl_device *udl = connector->dev->dev_private;
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struct edid *edid;
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int ret;
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edid = (struct edid *)udl_get_edid(udl);
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if (!edid) {
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drm_mode_connector_update_edid_property(connector, NULL);
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return 0;
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}
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/*
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* We only read the main block, but if the monitor reports extension
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* blocks then the drm edid code expects them to be present, so patch
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* the extension count to 0.
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*/
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edid->checksum += edid->extensions;
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edid->extensions = 0;
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drm_mode_connector_update_edid_property(connector, edid);
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ret = drm_add_edid_modes(connector, edid);
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kfree(edid);
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return ret;
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}
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static int udl_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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struct udl_device *udl = connector->dev->dev_private;
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if (!udl->sku_pixel_limit)
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return 0;
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if (mode->vdisplay * mode->hdisplay > udl->sku_pixel_limit)
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return MODE_VIRTUAL_Y;
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return 0;
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}
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static enum drm_connector_status
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udl_detect(struct drm_connector *connector, bool force)
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{
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if (drm_device_is_unplugged(connector->dev))
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return connector_status_disconnected;
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return connector_status_connected;
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}
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static struct drm_encoder*
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udl_best_single_encoder(struct drm_connector *connector)
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{
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int enc_id = connector->encoder_ids[0];
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return drm_encoder_find(connector->dev, enc_id);
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}
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static int udl_connector_set_property(struct drm_connector *connector,
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struct drm_property *property,
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uint64_t val)
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{
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return 0;
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}
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static void udl_connector_destroy(struct drm_connector *connector)
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{
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drm_connector_unregister(connector);
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drm_connector_cleanup(connector);
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kfree(connector);
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}
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static const struct drm_connector_helper_funcs udl_connector_helper_funcs = {
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.get_modes = udl_get_modes,
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.mode_valid = udl_mode_valid,
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.best_encoder = udl_best_single_encoder,
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};
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static const struct drm_connector_funcs udl_connector_funcs = {
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.dpms = drm_helper_connector_dpms,
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.detect = udl_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = udl_connector_destroy,
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.set_property = udl_connector_set_property,
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};
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int udl_connector_init(struct drm_device *dev, struct drm_encoder *encoder)
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{
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struct drm_connector *connector;
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connector = kzalloc(sizeof(struct drm_connector), GFP_KERNEL);
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if (!connector)
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return -ENOMEM;
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drm_connector_init(dev, connector, &udl_connector_funcs, DRM_MODE_CONNECTOR_DVII);
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drm_connector_helper_add(connector, &udl_connector_helper_funcs);
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drm_connector_register(connector);
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drm_mode_connector_attach_encoder(connector, encoder);
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return 0;
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}
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