projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 89c78134 AC |
1 | /* |
| 2 | * Copyright (c) 2007 Intel Corporation | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify it | |
| 5 | * under the terms and conditions of the GNU General Public License, | |
| 6 | * version 2, as published by the Free Software Foundation. | |
| 7 | * | |
| 8 | * This program is distributed in the hope it will be useful, but WITHOUT | |
| 9 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 10 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
| 11 | * more details. | |
| 12 | * | |
| 13 | * You should have received a copy of the GNU General Public License along with | |
| 14 | * this program; if not, write to the Free Software Foundation, Inc., | |
| 15 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
| 16 | * | |
| 17 | * Authers: Jesse Barnes <jesse.barnes@intel.com> | |
| 18 | */ | |
| 19 | ||
| 20 | #include <linux/i2c.h> | |
| 21 | #include <linux/fb.h> | |
| 22 | #include <drm/drmP.h> | |
| 23 | #include "psb_intel_drv.h" | |
| 24 | ||
| 25 | /** | |
| 26 | * psb_intel_ddc_probe | |
| 27 | * | |
| 28 | */ | |
| 352b16a0 | 29 | bool psb_intel_ddc_probe(struct i2c_adapter *adapter) |
| 89c78134 AC |
30 | { |
| 31 | u8 out_buf[] = { 0x0, 0x0 }; | |
| 32 | u8 buf[2]; | |
| 33 | int ret; | |
| 34 | struct i2c_msg msgs[] = { | |
| 35 | { | |
| 36 | .addr = 0x50, | |
| 37 | .flags = 0, | |
| 38 | .len = 1, | |
| 39 | .buf = out_buf, | |
| 40 | }, | |
| 41 | { | |
| 42 | .addr = 0x50, | |
| 43 | .flags = I2C_M_RD, | |
| 44 | .len = 1, | |
| 45 | .buf = buf, | |
| 46 | } | |
| 47 | }; | |
| 48 | ||
| 352b16a0 | 49 | ret = i2c_transfer(adapter, msgs, 2); |
| 89c78134 AC |
50 | if (ret == 2) |
| 51 | return true; | |
| 52 | ||
| 53 | return false; | |
| 54 | } | |
| 55 | ||
| 56 | /** | |
| 57 | * psb_intel_ddc_get_modes - get modelist from monitor | |
| 58 | * @connector: DRM connector device to use | |
| 59 | * | |
| 60 | * Fetch the EDID information from @connector using the DDC bus. | |
| 61 | */ | |
| 352b16a0 PJ |
62 | int psb_intel_ddc_get_modes(struct drm_connector *connector, |
| 63 | struct i2c_adapter *adapter) | |
| 89c78134 AC |
64 | { |
| 65 | struct edid *edid; | |
| 66 | int ret = 0; | |
| 67 | ||
| 352b16a0 | 68 | edid = drm_get_edid(connector, adapter); |
| 89c78134 | 69 | if (edid) { |
| 352b16a0 PJ |
70 | drm_mode_connector_update_edid_property(connector, edid); |
| 71 | ret = drm_add_edid_modes(connector, edid); | |
| 89c78134 AC |
72 | kfree(edid); |
| 73 | } | |
| 74 | return ret; | |
| 75 | } |