projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 79e53945 JB |
1 | /* |
| 2 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> | |
| 3 | * Copyright (c) 2007 Intel Corporation | |
| 4 | * Jesse Barnes <jesse.barnes@intel.com> | |
| 5 | * | |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
| 7 | * copy of this software and associated documentation files (the "Software"), | |
| 8 | * to deal in the Software without restriction, including without limitation | |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the | |
| 11 | * Software is furnished to do so, subject to the following conditions: | |
| 12 | * | |
| 13 | * The above copyright notice and this permission notice (including the next | |
| 14 | * paragraph) shall be included in all copies or substantial portions of the | |
| 15 | * Software. | |
| 16 | * | |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
| 20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| 21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
| 22 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
| 23 | * DEALINGS IN THE SOFTWARE. | |
| 24 | */ | |
| 25 | ||
| 26 | #include <linux/i2c.h> | |
| 27 | #include <linux/fb.h> | |
| 28 | #include "drmP.h" | |
| 29 | #include "intel_drv.h" | |
| 0ba0e9e1 | 30 | #include "i915_drv.h" |
| 79e53945 JB |
31 | |
| 32 | /** | |
| 33 | * intel_ddc_probe | |
| 34 | * | |
| 35 | */ | |
| 36 | bool intel_ddc_probe(struct intel_output *intel_output) | |
| 37 | { | |
| 38 | u8 out_buf[] = { 0x0, 0x0}; | |
| 39 | u8 buf[2]; | |
| 40 | int ret; | |
| 41 | struct i2c_msg msgs[] = { | |
| 42 | { | |
| 43 | .addr = 0x50, | |
| 44 | .flags = 0, | |
| 45 | .len = 1, | |
| 46 | .buf = out_buf, | |
| 47 | }, | |
| 48 | { | |
| 49 | .addr = 0x50, | |
| 50 | .flags = I2C_M_RD, | |
| 51 | .len = 1, | |
| 52 | .buf = buf, | |
| 53 | } | |
| 54 | }; | |
| 55 | ||
| f9c10a9b KP |
56 | intel_i2c_quirk_set(intel_output->base.dev, true); |
| 57 | ret = i2c_transfer(intel_output->ddc_bus, msgs, 2); | |
| 58 | intel_i2c_quirk_set(intel_output->base.dev, false); | |
| 79e53945 JB |
59 | if (ret == 2) |
| 60 | return true; | |
| 61 | ||
| 62 | return false; | |
| 63 | } | |
| 64 | ||
| 65 | /** | |
| 66 | * intel_ddc_get_modes - get modelist from monitor | |
| 67 | * @connector: DRM connector device to use | |
| 68 | * | |
| 69 | * Fetch the EDID information from @connector using the DDC bus. | |
| 70 | */ | |
| 71 | int intel_ddc_get_modes(struct intel_output *intel_output) | |
| 72 | { | |
| 73 | struct edid *edid; | |
| 74 | int ret = 0; | |
| 75 | ||
| f9c10a9b KP |
76 | intel_i2c_quirk_set(intel_output->base.dev, true); |
| 77 | edid = drm_get_edid(&intel_output->base, intel_output->ddc_bus); | |
| 78 | intel_i2c_quirk_set(intel_output->base.dev, false); | |
| 79e53945 JB |
79 | if (edid) { |
| 80 | drm_mode_connector_update_edid_property(&intel_output->base, | |
| 81 | edid); | |
| 82 | ret = drm_add_edid_modes(&intel_output->base, edid); | |
| 6b731a65 | 83 | intel_output->base.display_info.raw_edid = NULL; |
| 79e53945 JB |
84 | kfree(edid); |
| 85 | } | |
| 86 | ||
| 87 | return ret; | |
| 88 | } |