142 lines
3.5 KiB
C
142 lines
3.5 KiB
C
/*
|
|
* Copyright (C) 2012 Red Hat
|
|
* based in parts on udlfb.c:
|
|
* Copyright (C) 2009 Roberto De Ioris <roberto@unbit.it>
|
|
* Copyright (C) 2009 Jaya Kumar <jayakumar.lkml@gmail.com>
|
|
* Copyright (C) 2009 Bernie Thompson <bernie@plugable.com>
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License v2. See the file COPYING in the main directory of this archive for
|
|
* more details.
|
|
*/
|
|
|
|
#include "drmP.h"
|
|
#include "drm_crtc.h"
|
|
#include "drm_edid.h"
|
|
#include "drm_crtc_helper.h"
|
|
#include "udl_drv.h"
|
|
|
|
/* dummy connector to just get EDID,
|
|
all UDL appear to have a DVI-D */
|
|
|
|
static u8 *udl_get_edid(struct udl_device *udl)
|
|
{
|
|
u8 *block;
|
|
char rbuf[3];
|
|
int ret, i;
|
|
|
|
block = kmalloc(EDID_LENGTH, GFP_KERNEL);
|
|
if (block == NULL)
|
|
return NULL;
|
|
|
|
for (i = 0; i < EDID_LENGTH; i++) {
|
|
ret = usb_control_msg(udl->ddev->usbdev,
|
|
usb_rcvctrlpipe(udl->ddev->usbdev, 0), (0x02),
|
|
(0x80 | (0x02 << 5)), i << 8, 0xA1, rbuf, 2,
|
|
HZ);
|
|
if (ret < 1) {
|
|
DRM_ERROR("Read EDID byte %d failed err %x\n", i, ret);
|
|
i--;
|
|
goto error;
|
|
}
|
|
block[i] = rbuf[1];
|
|
}
|
|
|
|
return block;
|
|
|
|
error:
|
|
kfree(block);
|
|
return NULL;
|
|
}
|
|
|
|
static int udl_get_modes(struct drm_connector *connector)
|
|
{
|
|
struct udl_device *udl = connector->dev->dev_private;
|
|
struct edid *edid;
|
|
int ret;
|
|
|
|
edid = (struct edid *)udl_get_edid(udl);
|
|
|
|
connector->display_info.raw_edid = (char *)edid;
|
|
|
|
drm_mode_connector_update_edid_property(connector, edid);
|
|
ret = drm_add_edid_modes(connector, edid);
|
|
connector->display_info.raw_edid = NULL;
|
|
kfree(edid);
|
|
return ret;
|
|
}
|
|
|
|
static int udl_mode_valid(struct drm_connector *connector,
|
|
struct drm_display_mode *mode)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static enum drm_connector_status
|
|
udl_detect(struct drm_connector *connector, bool force)
|
|
{
|
|
if (drm_device_is_unplugged(connector->dev))
|
|
return connector_status_disconnected;
|
|
return connector_status_connected;
|
|
}
|
|
|
|
struct drm_encoder *udl_best_single_encoder(struct drm_connector *connector)
|
|
{
|
|
int enc_id = connector->encoder_ids[0];
|
|
struct drm_mode_object *obj;
|
|
struct drm_encoder *encoder;
|
|
|
|
obj = drm_mode_object_find(connector->dev, enc_id, DRM_MODE_OBJECT_ENCODER);
|
|
if (!obj)
|
|
return NULL;
|
|
encoder = obj_to_encoder(obj);
|
|
return encoder;
|
|
}
|
|
|
|
int udl_connector_set_property(struct drm_connector *connector, struct drm_property *property,
|
|
uint64_t val)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void udl_connector_destroy(struct drm_connector *connector)
|
|
{
|
|
drm_sysfs_connector_remove(connector);
|
|
drm_connector_cleanup(connector);
|
|
kfree(connector);
|
|
}
|
|
|
|
struct drm_connector_helper_funcs udl_connector_helper_funcs = {
|
|
.get_modes = udl_get_modes,
|
|
.mode_valid = udl_mode_valid,
|
|
.best_encoder = udl_best_single_encoder,
|
|
};
|
|
|
|
struct drm_connector_funcs udl_connector_funcs = {
|
|
.dpms = drm_helper_connector_dpms,
|
|
.detect = udl_detect,
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
|
.destroy = udl_connector_destroy,
|
|
.set_property = udl_connector_set_property,
|
|
};
|
|
|
|
int udl_connector_init(struct drm_device *dev, struct drm_encoder *encoder)
|
|
{
|
|
struct drm_connector *connector;
|
|
|
|
connector = kzalloc(sizeof(struct drm_connector), GFP_KERNEL);
|
|
if (!connector)
|
|
return -ENOMEM;
|
|
|
|
drm_connector_init(dev, connector, &udl_connector_funcs, DRM_MODE_CONNECTOR_DVII);
|
|
drm_connector_helper_add(connector, &udl_connector_helper_funcs);
|
|
|
|
drm_sysfs_connector_add(connector);
|
|
drm_mode_connector_attach_encoder(connector, encoder);
|
|
|
|
drm_connector_attach_property(connector,
|
|
dev->mode_config.dirty_info_property,
|
|
1);
|
|
return 0;
|
|
}
|