diff options
Diffstat (limited to 'drivers/gpu/drm/udl/udl_connector.c')
| -rw-r--r-- | drivers/gpu/drm/udl/udl_connector.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/drivers/gpu/drm/udl/udl_connector.c b/drivers/gpu/drm/udl/udl_connector.c new file mode 100644 index 00000000000..ba055e9ca00 --- /dev/null +++ b/drivers/gpu/drm/udl/udl_connector.c @@ -0,0 +1,141 @@ +/* + * 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; +} |