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1 | /* |
1 | /* |
2 | * Copyright © 2006 Intel Corporation |
2 | * Copyright © 2006 Intel Corporation |
3 | * |
3 | * |
4 | * Permission is hereby granted, free of charge, to any person obtaining a |
4 | * Permission is hereby granted, free of charge, to any person obtaining a |
5 | * copy of this software and associated documentation files (the "Software"), |
5 | * copy of this software and associated documentation files (the "Software"), |
6 | * to deal in the Software without restriction, including without limitation |
6 | * to deal in the Software without restriction, including without limitation |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
8 | * and/or sell copies of the Software, and to permit persons to whom the |
8 | * and/or sell copies of the Software, and to permit persons to whom the |
9 | * Software is furnished to do so, subject to the following conditions: |
9 | * Software is furnished to do so, subject to the following conditions: |
10 | * |
10 | * |
11 | * The above copyright notice and this permission notice (including the next |
11 | * The above copyright notice and this permission notice (including the next |
12 | * paragraph) shall be included in all copies or substantial portions of the |
12 | * paragraph) shall be included in all copies or substantial portions of the |
13 | * Software. |
13 | * Software. |
14 | * |
14 | * |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
21 | * SOFTWARE. |
21 | * SOFTWARE. |
22 | * |
22 | * |
23 | * Authors: |
23 | * Authors: |
24 | * Eric Anholt |
24 | * Eric Anholt |
25 | * |
25 | * |
26 | */ |
26 | */ |
27 | #include |
27 | #include |
28 | #include |
28 | #include |
29 | #include |
29 | #include |
30 | #include |
30 | #include |
31 | #include "i915_drv.h" |
31 | #include "i915_drv.h" |
32 | #include "intel_bios.h" |
32 | #include "intel_bios.h" |
33 | 33 | ||
34 | #define SLAVE_ADDR1 0x70 |
34 | #define SLAVE_ADDR1 0x70 |
35 | #define SLAVE_ADDR2 0x72 |
35 | #define SLAVE_ADDR2 0x72 |
36 | 36 | ||
37 | static int panel_type; |
37 | static int panel_type; |
38 | 38 | ||
39 | static const void * |
39 | static const void * |
40 | find_section(const void *_bdb, int section_id) |
40 | find_section(const void *_bdb, int section_id) |
41 | { |
41 | { |
42 | const struct bdb_header *bdb = _bdb; |
42 | const struct bdb_header *bdb = _bdb; |
43 | const u8 *base = _bdb; |
43 | const u8 *base = _bdb; |
44 | int index = 0; |
44 | int index = 0; |
45 | u32 total, current_size; |
45 | u32 total, current_size; |
46 | u8 current_id; |
46 | u8 current_id; |
47 | 47 | ||
48 | /* skip to first section */ |
48 | /* skip to first section */ |
49 | index += bdb->header_size; |
49 | index += bdb->header_size; |
50 | total = bdb->bdb_size; |
50 | total = bdb->bdb_size; |
51 | 51 | ||
52 | /* walk the sections looking for section_id */ |
52 | /* walk the sections looking for section_id */ |
53 | while (index + 3 < total) { |
53 | while (index + 3 < total) { |
54 | current_id = *(base + index); |
54 | current_id = *(base + index); |
55 | index++; |
55 | index++; |
56 | 56 | ||
57 | current_size = *((const u16 *)(base + index)); |
57 | current_size = *((const u16 *)(base + index)); |
58 | index += 2; |
58 | index += 2; |
59 | 59 | ||
60 | /* The MIPI Sequence Block v3+ has a separate size field. */ |
60 | /* The MIPI Sequence Block v3+ has a separate size field. */ |
61 | if (current_id == BDB_MIPI_SEQUENCE && *(base + index) >= 3) |
61 | if (current_id == BDB_MIPI_SEQUENCE && *(base + index) >= 3) |
62 | current_size = *((const u32 *)(base + index + 1)); |
62 | current_size = *((const u32 *)(base + index + 1)); |
63 | 63 | ||
64 | if (index + current_size > total) |
64 | if (index + current_size > total) |
65 | return NULL; |
65 | return NULL; |
66 | 66 | ||
67 | if (current_id == section_id) |
67 | if (current_id == section_id) |
68 | return base + index; |
68 | return base + index; |
69 | 69 | ||
70 | index += current_size; |
70 | index += current_size; |
71 | } |
71 | } |
72 | 72 | ||
73 | return NULL; |
73 | return NULL; |
74 | } |
74 | } |
75 | 75 | ||
76 | static u16 |
76 | static u16 |
77 | get_blocksize(const void *p) |
77 | get_blocksize(const void *p) |
78 | { |
78 | { |
79 | u16 *block_ptr, block_size; |
79 | u16 *block_ptr, block_size; |
80 | 80 | ||
81 | block_ptr = (u16 *)((char *)p - 2); |
81 | block_ptr = (u16 *)((char *)p - 2); |
82 | block_size = *block_ptr; |
82 | block_size = *block_ptr; |
83 | return block_size; |
83 | return block_size; |
84 | } |
84 | } |
85 | 85 | ||
86 | static void |
86 | static void |
87 | fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode, |
87 | fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode, |
88 | const struct lvds_dvo_timing *dvo_timing) |
88 | const struct lvds_dvo_timing *dvo_timing) |
89 | { |
89 | { |
90 | panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) | |
90 | panel_fixed_mode->hdisplay = (dvo_timing->hactive_hi << 8) | |
91 | dvo_timing->hactive_lo; |
91 | dvo_timing->hactive_lo; |
92 | panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay + |
92 | panel_fixed_mode->hsync_start = panel_fixed_mode->hdisplay + |
93 | ((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo); |
93 | ((dvo_timing->hsync_off_hi << 8) | dvo_timing->hsync_off_lo); |
94 | panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start + |
94 | panel_fixed_mode->hsync_end = panel_fixed_mode->hsync_start + |
95 | dvo_timing->hsync_pulse_width; |
95 | dvo_timing->hsync_pulse_width; |
96 | panel_fixed_mode->htotal = panel_fixed_mode->hdisplay + |
96 | panel_fixed_mode->htotal = panel_fixed_mode->hdisplay + |
97 | ((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo); |
97 | ((dvo_timing->hblank_hi << 8) | dvo_timing->hblank_lo); |
98 | 98 | ||
99 | panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) | |
99 | panel_fixed_mode->vdisplay = (dvo_timing->vactive_hi << 8) | |
100 | dvo_timing->vactive_lo; |
100 | dvo_timing->vactive_lo; |
101 | panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay + |
101 | panel_fixed_mode->vsync_start = panel_fixed_mode->vdisplay + |
102 | dvo_timing->vsync_off; |
102 | dvo_timing->vsync_off; |
103 | panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start + |
103 | panel_fixed_mode->vsync_end = panel_fixed_mode->vsync_start + |
104 | dvo_timing->vsync_pulse_width; |
104 | dvo_timing->vsync_pulse_width; |
105 | panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay + |
105 | panel_fixed_mode->vtotal = panel_fixed_mode->vdisplay + |
106 | ((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo); |
106 | ((dvo_timing->vblank_hi << 8) | dvo_timing->vblank_lo); |
107 | panel_fixed_mode->clock = dvo_timing->clock * 10; |
107 | panel_fixed_mode->clock = dvo_timing->clock * 10; |
108 | panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED; |
108 | panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED; |
109 | 109 | ||
110 | if (dvo_timing->hsync_positive) |
110 | if (dvo_timing->hsync_positive) |
111 | panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC; |
111 | panel_fixed_mode->flags |= DRM_MODE_FLAG_PHSYNC; |
112 | else |
112 | else |
113 | panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC; |
113 | panel_fixed_mode->flags |= DRM_MODE_FLAG_NHSYNC; |
114 | 114 | ||
115 | if (dvo_timing->vsync_positive) |
115 | if (dvo_timing->vsync_positive) |
116 | panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC; |
116 | panel_fixed_mode->flags |= DRM_MODE_FLAG_PVSYNC; |
117 | else |
117 | else |
118 | panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC; |
118 | panel_fixed_mode->flags |= DRM_MODE_FLAG_NVSYNC; |
119 | 119 | ||
120 | /* Some VBTs have bogus h/vtotal values */ |
120 | /* Some VBTs have bogus h/vtotal values */ |
121 | if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal) |
121 | if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal) |
122 | panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1; |
122 | panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1; |
123 | if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal) |
123 | if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal) |
124 | panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1; |
124 | panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1; |
125 | 125 | ||
126 | drm_mode_set_name(panel_fixed_mode); |
126 | drm_mode_set_name(panel_fixed_mode); |
127 | } |
127 | } |
128 | 128 | ||
129 | static const struct lvds_dvo_timing * |
129 | static const struct lvds_dvo_timing * |
130 | get_lvds_dvo_timing(const struct bdb_lvds_lfp_data *lvds_lfp_data, |
130 | get_lvds_dvo_timing(const struct bdb_lvds_lfp_data *lvds_lfp_data, |
131 | const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs, |
131 | const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs, |
132 | int index) |
132 | int index) |
133 | { |
133 | { |
134 | /* |
134 | /* |
135 | * the size of fp_timing varies on the different platform. |
135 | * the size of fp_timing varies on the different platform. |
136 | * So calculate the DVO timing relative offset in LVDS data |
136 | * So calculate the DVO timing relative offset in LVDS data |
137 | * entry to get the DVO timing entry |
137 | * entry to get the DVO timing entry |
138 | */ |
138 | */ |
139 | 139 | ||
140 | int lfp_data_size = |
140 | int lfp_data_size = |
141 | lvds_lfp_data_ptrs->ptr[1].dvo_timing_offset - |
141 | lvds_lfp_data_ptrs->ptr[1].dvo_timing_offset - |
142 | lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset; |
142 | lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset; |
143 | int dvo_timing_offset = |
143 | int dvo_timing_offset = |
144 | lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset - |
144 | lvds_lfp_data_ptrs->ptr[0].dvo_timing_offset - |
145 | lvds_lfp_data_ptrs->ptr[0].fp_timing_offset; |
145 | lvds_lfp_data_ptrs->ptr[0].fp_timing_offset; |
146 | char *entry = (char *)lvds_lfp_data->data + lfp_data_size * index; |
146 | char *entry = (char *)lvds_lfp_data->data + lfp_data_size * index; |
147 | 147 | ||
148 | return (struct lvds_dvo_timing *)(entry + dvo_timing_offset); |
148 | return (struct lvds_dvo_timing *)(entry + dvo_timing_offset); |
149 | } |
149 | } |
150 | 150 | ||
151 | /* get lvds_fp_timing entry |
151 | /* get lvds_fp_timing entry |
152 | * this function may return NULL if the corresponding entry is invalid |
152 | * this function may return NULL if the corresponding entry is invalid |
153 | */ |
153 | */ |
154 | static const struct lvds_fp_timing * |
154 | static const struct lvds_fp_timing * |
155 | get_lvds_fp_timing(const struct bdb_header *bdb, |
155 | get_lvds_fp_timing(const struct bdb_header *bdb, |
156 | const struct bdb_lvds_lfp_data *data, |
156 | const struct bdb_lvds_lfp_data *data, |
157 | const struct bdb_lvds_lfp_data_ptrs *ptrs, |
157 | const struct bdb_lvds_lfp_data_ptrs *ptrs, |
158 | int index) |
158 | int index) |
159 | { |
159 | { |
160 | size_t data_ofs = (const u8 *)data - (const u8 *)bdb; |
160 | size_t data_ofs = (const u8 *)data - (const u8 *)bdb; |
161 | u16 data_size = ((const u16 *)data)[-1]; /* stored in header */ |
161 | u16 data_size = ((const u16 *)data)[-1]; /* stored in header */ |
162 | size_t ofs; |
162 | size_t ofs; |
163 | 163 | ||
164 | if (index >= ARRAY_SIZE(ptrs->ptr)) |
164 | if (index >= ARRAY_SIZE(ptrs->ptr)) |
165 | return NULL; |
165 | return NULL; |
166 | ofs = ptrs->ptr[index].fp_timing_offset; |
166 | ofs = ptrs->ptr[index].fp_timing_offset; |
167 | if (ofs < data_ofs || |
167 | if (ofs < data_ofs || |
168 | ofs + sizeof(struct lvds_fp_timing) > data_ofs + data_size) |
168 | ofs + sizeof(struct lvds_fp_timing) > data_ofs + data_size) |
169 | return NULL; |
169 | return NULL; |
170 | return (const struct lvds_fp_timing *)((const u8 *)bdb + ofs); |
170 | return (const struct lvds_fp_timing *)((const u8 *)bdb + ofs); |
171 | } |
171 | } |
172 | 172 | ||
173 | /* Try to find integrated panel data */ |
173 | /* Try to find integrated panel data */ |
174 | static void |
174 | static void |
175 | parse_lfp_panel_data(struct drm_i915_private *dev_priv, |
175 | parse_lfp_panel_data(struct drm_i915_private *dev_priv, |
176 | const struct bdb_header *bdb) |
176 | const struct bdb_header *bdb) |
177 | { |
177 | { |
178 | const struct bdb_lvds_options *lvds_options; |
178 | const struct bdb_lvds_options *lvds_options; |
179 | const struct bdb_lvds_lfp_data *lvds_lfp_data; |
179 | const struct bdb_lvds_lfp_data *lvds_lfp_data; |
180 | const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs; |
180 | const struct bdb_lvds_lfp_data_ptrs *lvds_lfp_data_ptrs; |
181 | const struct lvds_dvo_timing *panel_dvo_timing; |
181 | const struct lvds_dvo_timing *panel_dvo_timing; |
182 | const struct lvds_fp_timing *fp_timing; |
182 | const struct lvds_fp_timing *fp_timing; |
183 | struct drm_display_mode *panel_fixed_mode; |
183 | struct drm_display_mode *panel_fixed_mode; |
184 | int drrs_mode; |
184 | int drrs_mode; |
185 | 185 | ||
186 | lvds_options = find_section(bdb, BDB_LVDS_OPTIONS); |
186 | lvds_options = find_section(bdb, BDB_LVDS_OPTIONS); |
187 | if (!lvds_options) |
187 | if (!lvds_options) |
188 | return; |
188 | return; |
189 | 189 | ||
190 | dev_priv->vbt.lvds_dither = lvds_options->pixel_dither; |
190 | dev_priv->vbt.lvds_dither = lvds_options->pixel_dither; |
191 | if (lvds_options->panel_type == 0xff) |
191 | if (lvds_options->panel_type == 0xff) |
192 | return; |
192 | return; |
193 | 193 | ||
194 | panel_type = lvds_options->panel_type; |
194 | panel_type = lvds_options->panel_type; |
195 | 195 | ||
196 | drrs_mode = (lvds_options->dps_panel_type_bits |
196 | drrs_mode = (lvds_options->dps_panel_type_bits |
197 | >> (panel_type * 2)) & MODE_MASK; |
197 | >> (panel_type * 2)) & MODE_MASK; |
198 | /* |
198 | /* |
199 | * VBT has static DRRS = 0 and seamless DRRS = 2. |
199 | * VBT has static DRRS = 0 and seamless DRRS = 2. |
200 | * The below piece of code is required to adjust vbt.drrs_type |
200 | * The below piece of code is required to adjust vbt.drrs_type |
201 | * to match the enum drrs_support_type. |
201 | * to match the enum drrs_support_type. |
202 | */ |
202 | */ |
203 | switch (drrs_mode) { |
203 | switch (drrs_mode) { |
204 | case 0: |
204 | case 0: |
205 | dev_priv->vbt.drrs_type = STATIC_DRRS_SUPPORT; |
205 | dev_priv->vbt.drrs_type = STATIC_DRRS_SUPPORT; |
206 | DRM_DEBUG_KMS("DRRS supported mode is static\n"); |
206 | DRM_DEBUG_KMS("DRRS supported mode is static\n"); |
207 | break; |
207 | break; |
208 | case 2: |
208 | case 2: |
209 | dev_priv->vbt.drrs_type = SEAMLESS_DRRS_SUPPORT; |
209 | dev_priv->vbt.drrs_type = SEAMLESS_DRRS_SUPPORT; |
210 | DRM_DEBUG_KMS("DRRS supported mode is seamless\n"); |
210 | DRM_DEBUG_KMS("DRRS supported mode is seamless\n"); |
211 | break; |
211 | break; |
212 | default: |
212 | default: |
213 | dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED; |
213 | dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED; |
214 | DRM_DEBUG_KMS("DRRS not supported (VBT input)\n"); |
214 | DRM_DEBUG_KMS("DRRS not supported (VBT input)\n"); |
215 | break; |
215 | break; |
216 | } |
216 | } |
217 | 217 | ||
218 | lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA); |
218 | lvds_lfp_data = find_section(bdb, BDB_LVDS_LFP_DATA); |
219 | if (!lvds_lfp_data) |
219 | if (!lvds_lfp_data) |
220 | return; |
220 | return; |
221 | 221 | ||
222 | lvds_lfp_data_ptrs = find_section(bdb, BDB_LVDS_LFP_DATA_PTRS); |
222 | lvds_lfp_data_ptrs = find_section(bdb, BDB_LVDS_LFP_DATA_PTRS); |
223 | if (!lvds_lfp_data_ptrs) |
223 | if (!lvds_lfp_data_ptrs) |
224 | return; |
224 | return; |
225 | 225 | ||
226 | dev_priv->vbt.lvds_vbt = 1; |
226 | dev_priv->vbt.lvds_vbt = 1; |
227 | 227 | ||
228 | panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data, |
228 | panel_dvo_timing = get_lvds_dvo_timing(lvds_lfp_data, |
229 | lvds_lfp_data_ptrs, |
229 | lvds_lfp_data_ptrs, |
230 | lvds_options->panel_type); |
230 | lvds_options->panel_type); |
231 | 231 | ||
232 | panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); |
232 | panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); |
233 | if (!panel_fixed_mode) |
233 | if (!panel_fixed_mode) |
234 | return; |
234 | return; |
235 | 235 | ||
236 | fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing); |
236 | fill_detail_timing_data(panel_fixed_mode, panel_dvo_timing); |
237 | 237 | ||
238 | dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode; |
238 | dev_priv->vbt.lfp_lvds_vbt_mode = panel_fixed_mode; |
239 | 239 | ||
240 | DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n"); |
240 | DRM_DEBUG_KMS("Found panel mode in BIOS VBT tables:\n"); |
241 | drm_mode_debug_printmodeline(panel_fixed_mode); |
241 | drm_mode_debug_printmodeline(panel_fixed_mode); |
242 | 242 | ||
243 | fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data, |
243 | fp_timing = get_lvds_fp_timing(bdb, lvds_lfp_data, |
244 | lvds_lfp_data_ptrs, |
244 | lvds_lfp_data_ptrs, |
245 | lvds_options->panel_type); |
245 | lvds_options->panel_type); |
246 | if (fp_timing) { |
246 | if (fp_timing) { |
247 | /* check the resolution, just to be sure */ |
247 | /* check the resolution, just to be sure */ |
248 | if (fp_timing->x_res == panel_fixed_mode->hdisplay && |
248 | if (fp_timing->x_res == panel_fixed_mode->hdisplay && |
249 | fp_timing->y_res == panel_fixed_mode->vdisplay) { |
249 | fp_timing->y_res == panel_fixed_mode->vdisplay) { |
250 | dev_priv->vbt.bios_lvds_val = fp_timing->lvds_reg_val; |
250 | dev_priv->vbt.bios_lvds_val = fp_timing->lvds_reg_val; |
251 | DRM_DEBUG_KMS("VBT initial LVDS value %x\n", |
251 | DRM_DEBUG_KMS("VBT initial LVDS value %x\n", |
252 | dev_priv->vbt.bios_lvds_val); |
252 | dev_priv->vbt.bios_lvds_val); |
253 | } |
253 | } |
254 | } |
254 | } |
255 | } |
255 | } |
256 | 256 | ||
257 | static void |
257 | static void |
258 | parse_lfp_backlight(struct drm_i915_private *dev_priv, |
258 | parse_lfp_backlight(struct drm_i915_private *dev_priv, |
259 | const struct bdb_header *bdb) |
259 | const struct bdb_header *bdb) |
260 | { |
260 | { |
261 | const struct bdb_lfp_backlight_data *backlight_data; |
261 | const struct bdb_lfp_backlight_data *backlight_data; |
262 | const struct bdb_lfp_backlight_data_entry *entry; |
262 | const struct bdb_lfp_backlight_data_entry *entry; |
263 | 263 | ||
264 | backlight_data = find_section(bdb, BDB_LVDS_BACKLIGHT); |
264 | backlight_data = find_section(bdb, BDB_LVDS_BACKLIGHT); |
265 | if (!backlight_data) |
265 | if (!backlight_data) |
266 | return; |
266 | return; |
267 | 267 | ||
268 | if (backlight_data->entry_size != sizeof(backlight_data->data[0])) { |
268 | if (backlight_data->entry_size != sizeof(backlight_data->data[0])) { |
269 | DRM_DEBUG_KMS("Unsupported backlight data entry size %u\n", |
269 | DRM_DEBUG_KMS("Unsupported backlight data entry size %u\n", |
270 | backlight_data->entry_size); |
270 | backlight_data->entry_size); |
271 | return; |
271 | return; |
272 | } |
272 | } |
273 | 273 | ||
274 | entry = &backlight_data->data[panel_type]; |
274 | entry = &backlight_data->data[panel_type]; |
275 | 275 | ||
276 | dev_priv->vbt.backlight.present = entry->type == BDB_BACKLIGHT_TYPE_PWM; |
276 | dev_priv->vbt.backlight.present = entry->type == BDB_BACKLIGHT_TYPE_PWM; |
277 | if (!dev_priv->vbt.backlight.present) { |
277 | if (!dev_priv->vbt.backlight.present) { |
278 | DRM_DEBUG_KMS("PWM backlight not present in VBT (type %u)\n", |
278 | DRM_DEBUG_KMS("PWM backlight not present in VBT (type %u)\n", |
279 | entry->type); |
279 | entry->type); |
280 | return; |
280 | return; |
281 | } |
281 | } |
282 | 282 | ||
283 | dev_priv->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz; |
283 | dev_priv->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz; |
284 | dev_priv->vbt.backlight.active_low_pwm = entry->active_low_pwm; |
284 | dev_priv->vbt.backlight.active_low_pwm = entry->active_low_pwm; |
285 | dev_priv->vbt.backlight.min_brightness = entry->min_brightness; |
285 | dev_priv->vbt.backlight.min_brightness = entry->min_brightness; |
286 | DRM_DEBUG_KMS("VBT backlight PWM modulation frequency %u Hz, " |
286 | DRM_DEBUG_KMS("VBT backlight PWM modulation frequency %u Hz, " |
287 | "active %s, min brightness %u, level %u\n", |
287 | "active %s, min brightness %u, level %u\n", |
288 | dev_priv->vbt.backlight.pwm_freq_hz, |
288 | dev_priv->vbt.backlight.pwm_freq_hz, |
289 | dev_priv->vbt.backlight.active_low_pwm ? "low" : "high", |
289 | dev_priv->vbt.backlight.active_low_pwm ? "low" : "high", |
290 | dev_priv->vbt.backlight.min_brightness, |
290 | dev_priv->vbt.backlight.min_brightness, |
291 | backlight_data->level[panel_type]); |
291 | backlight_data->level[panel_type]); |
292 | } |
292 | } |
293 | 293 | ||
294 | /* Try to find sdvo panel data */ |
294 | /* Try to find sdvo panel data */ |
295 | static void |
295 | static void |
296 | parse_sdvo_panel_data(struct drm_i915_private *dev_priv, |
296 | parse_sdvo_panel_data(struct drm_i915_private *dev_priv, |
297 | const struct bdb_header *bdb) |
297 | const struct bdb_header *bdb) |
298 | { |
298 | { |
299 | const struct lvds_dvo_timing *dvo_timing; |
299 | const struct lvds_dvo_timing *dvo_timing; |
300 | struct drm_display_mode *panel_fixed_mode; |
300 | struct drm_display_mode *panel_fixed_mode; |
301 | int index; |
301 | int index; |
302 | 302 | ||
303 | index = i915.vbt_sdvo_panel_type; |
303 | index = i915.vbt_sdvo_panel_type; |
304 | if (index == -2) { |
304 | if (index == -2) { |
305 | DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n"); |
305 | DRM_DEBUG_KMS("Ignore SDVO panel mode from BIOS VBT tables.\n"); |
306 | return; |
306 | return; |
307 | } |
307 | } |
308 | 308 | ||
309 | if (index == -1) { |
309 | if (index == -1) { |
310 | const struct bdb_sdvo_lvds_options *sdvo_lvds_options; |
310 | const struct bdb_sdvo_lvds_options *sdvo_lvds_options; |
311 | 311 | ||
312 | sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS); |
312 | sdvo_lvds_options = find_section(bdb, BDB_SDVO_LVDS_OPTIONS); |
313 | if (!sdvo_lvds_options) |
313 | if (!sdvo_lvds_options) |
314 | return; |
314 | return; |
315 | 315 | ||
316 | index = sdvo_lvds_options->panel_type; |
316 | index = sdvo_lvds_options->panel_type; |
317 | } |
317 | } |
318 | 318 | ||
319 | dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS); |
319 | dvo_timing = find_section(bdb, BDB_SDVO_PANEL_DTDS); |
320 | if (!dvo_timing) |
320 | if (!dvo_timing) |
321 | return; |
321 | return; |
322 | 322 | ||
323 | panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); |
323 | panel_fixed_mode = kzalloc(sizeof(*panel_fixed_mode), GFP_KERNEL); |
324 | if (!panel_fixed_mode) |
324 | if (!panel_fixed_mode) |
325 | return; |
325 | return; |
326 | 326 | ||
327 | fill_detail_timing_data(panel_fixed_mode, dvo_timing + index); |
327 | fill_detail_timing_data(panel_fixed_mode, dvo_timing + index); |
328 | 328 | ||
329 | dev_priv->vbt.sdvo_lvds_vbt_mode = panel_fixed_mode; |
329 | dev_priv->vbt.sdvo_lvds_vbt_mode = panel_fixed_mode; |
330 | 330 | ||
331 | DRM_DEBUG_KMS("Found SDVO panel mode in BIOS VBT tables:\n"); |
331 | DRM_DEBUG_KMS("Found SDVO panel mode in BIOS VBT tables:\n"); |
332 | drm_mode_debug_printmodeline(panel_fixed_mode); |
332 | drm_mode_debug_printmodeline(panel_fixed_mode); |
333 | } |
333 | } |
334 | 334 | ||
335 | static int intel_bios_ssc_frequency(struct drm_device *dev, |
335 | static int intel_bios_ssc_frequency(struct drm_device *dev, |
336 | bool alternate) |
336 | bool alternate) |
337 | { |
337 | { |
338 | switch (INTEL_INFO(dev)->gen) { |
338 | switch (INTEL_INFO(dev)->gen) { |
339 | case 2: |
339 | case 2: |
340 | return alternate ? 66667 : 48000; |
340 | return alternate ? 66667 : 48000; |
341 | case 3: |
341 | case 3: |
342 | case 4: |
342 | case 4: |
343 | return alternate ? 100000 : 96000; |
343 | return alternate ? 100000 : 96000; |
344 | default: |
344 | default: |
345 | return alternate ? 100000 : 120000; |
345 | return alternate ? 100000 : 120000; |
346 | } |
346 | } |
347 | } |
347 | } |
348 | 348 | ||
349 | static void |
349 | static void |
350 | parse_general_features(struct drm_i915_private *dev_priv, |
350 | parse_general_features(struct drm_i915_private *dev_priv, |
351 | const struct bdb_header *bdb) |
351 | const struct bdb_header *bdb) |
352 | { |
352 | { |
353 | struct drm_device *dev = dev_priv->dev; |
353 | struct drm_device *dev = dev_priv->dev; |
354 | const struct bdb_general_features *general; |
354 | const struct bdb_general_features *general; |
355 | 355 | ||
356 | general = find_section(bdb, BDB_GENERAL_FEATURES); |
356 | general = find_section(bdb, BDB_GENERAL_FEATURES); |
357 | if (general) { |
357 | if (general) { |
358 | dev_priv->vbt.int_tv_support = general->int_tv_support; |
358 | dev_priv->vbt.int_tv_support = general->int_tv_support; |
359 | dev_priv->vbt.int_crt_support = general->int_crt_support; |
359 | dev_priv->vbt.int_crt_support = general->int_crt_support; |
360 | dev_priv->vbt.lvds_use_ssc = general->enable_ssc; |
360 | dev_priv->vbt.lvds_use_ssc = general->enable_ssc; |
361 | dev_priv->vbt.lvds_ssc_freq = |
361 | dev_priv->vbt.lvds_ssc_freq = |
362 | intel_bios_ssc_frequency(dev, general->ssc_freq); |
362 | intel_bios_ssc_frequency(dev, general->ssc_freq); |
363 | dev_priv->vbt.display_clock_mode = general->display_clock_mode; |
363 | dev_priv->vbt.display_clock_mode = general->display_clock_mode; |
364 | dev_priv->vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted; |
364 | dev_priv->vbt.fdi_rx_polarity_inverted = general->fdi_rx_polarity_inverted; |
365 | DRM_DEBUG_KMS("BDB_GENERAL_FEATURES int_tv_support %d int_crt_support %d lvds_use_ssc %d lvds_ssc_freq %d display_clock_mode %d fdi_rx_polarity_inverted %d\n", |
365 | DRM_DEBUG_KMS("BDB_GENERAL_FEATURES int_tv_support %d int_crt_support %d lvds_use_ssc %d lvds_ssc_freq %d display_clock_mode %d fdi_rx_polarity_inverted %d\n", |
366 | dev_priv->vbt.int_tv_support, |
366 | dev_priv->vbt.int_tv_support, |
367 | dev_priv->vbt.int_crt_support, |
367 | dev_priv->vbt.int_crt_support, |
368 | dev_priv->vbt.lvds_use_ssc, |
368 | dev_priv->vbt.lvds_use_ssc, |
369 | dev_priv->vbt.lvds_ssc_freq, |
369 | dev_priv->vbt.lvds_ssc_freq, |
370 | dev_priv->vbt.display_clock_mode, |
370 | dev_priv->vbt.display_clock_mode, |
371 | dev_priv->vbt.fdi_rx_polarity_inverted); |
371 | dev_priv->vbt.fdi_rx_polarity_inverted); |
372 | } |
372 | } |
373 | } |
373 | } |
374 | 374 | ||
375 | static void |
375 | static void |
376 | parse_general_definitions(struct drm_i915_private *dev_priv, |
376 | parse_general_definitions(struct drm_i915_private *dev_priv, |
377 | const struct bdb_header *bdb) |
377 | const struct bdb_header *bdb) |
378 | { |
378 | { |
379 | const struct bdb_general_definitions *general; |
379 | const struct bdb_general_definitions *general; |
380 | 380 | ||
381 | general = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
381 | general = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
382 | if (general) { |
382 | if (general) { |
383 | u16 block_size = get_blocksize(general); |
383 | u16 block_size = get_blocksize(general); |
384 | if (block_size >= sizeof(*general)) { |
384 | if (block_size >= sizeof(*general)) { |
385 | int bus_pin = general->crt_ddc_gmbus_pin; |
385 | int bus_pin = general->crt_ddc_gmbus_pin; |
386 | DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin); |
386 | DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin); |
387 | if (intel_gmbus_is_valid_pin(dev_priv, bus_pin)) |
387 | if (intel_gmbus_is_valid_pin(dev_priv, bus_pin)) |
388 | dev_priv->vbt.crt_ddc_pin = bus_pin; |
388 | dev_priv->vbt.crt_ddc_pin = bus_pin; |
389 | } else { |
389 | } else { |
390 | DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n", |
390 | DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n", |
391 | block_size); |
391 | block_size); |
392 | } |
392 | } |
393 | } |
393 | } |
394 | } |
394 | } |
395 | 395 | ||
396 | static const union child_device_config * |
396 | static const union child_device_config * |
397 | child_device_ptr(const struct bdb_general_definitions *p_defs, int i) |
397 | child_device_ptr(const struct bdb_general_definitions *p_defs, int i) |
398 | { |
398 | { |
399 | return (const void *) &p_defs->devices[i * p_defs->child_dev_size]; |
399 | return (const void *) &p_defs->devices[i * p_defs->child_dev_size]; |
400 | } |
400 | } |
401 | 401 | ||
402 | static void |
402 | static void |
403 | parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, |
403 | parse_sdvo_device_mapping(struct drm_i915_private *dev_priv, |
404 | const struct bdb_header *bdb) |
404 | const struct bdb_header *bdb) |
405 | { |
405 | { |
406 | struct sdvo_device_mapping *p_mapping; |
406 | struct sdvo_device_mapping *p_mapping; |
407 | const struct bdb_general_definitions *p_defs; |
407 | const struct bdb_general_definitions *p_defs; |
408 | const struct old_child_dev_config *child; /* legacy */ |
408 | const struct old_child_dev_config *child; /* legacy */ |
409 | int i, child_device_num, count; |
409 | int i, child_device_num, count; |
410 | u16 block_size; |
410 | u16 block_size; |
411 | 411 | ||
412 | p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
412 | p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
413 | if (!p_defs) { |
413 | if (!p_defs) { |
414 | DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n"); |
414 | DRM_DEBUG_KMS("No general definition block is found, unable to construct sdvo mapping.\n"); |
415 | return; |
415 | return; |
416 | } |
416 | } |
417 | 417 | ||
418 | /* |
418 | /* |
419 | * Only parse SDVO mappings when the general definitions block child |
419 | * Only parse SDVO mappings when the general definitions block child |
420 | * device size matches that of the *legacy* child device config |
420 | * device size matches that of the *legacy* child device config |
421 | * struct. Thus, SDVO mapping will be skipped for newer VBT. |
421 | * struct. Thus, SDVO mapping will be skipped for newer VBT. |
422 | */ |
422 | */ |
423 | if (p_defs->child_dev_size != sizeof(*child)) { |
423 | if (p_defs->child_dev_size != sizeof(*child)) { |
424 | DRM_DEBUG_KMS("Unsupported child device size for SDVO mapping.\n"); |
424 | DRM_DEBUG_KMS("Unsupported child device size for SDVO mapping.\n"); |
425 | return; |
425 | return; |
426 | } |
426 | } |
427 | /* get the block size of general definitions */ |
427 | /* get the block size of general definitions */ |
428 | block_size = get_blocksize(p_defs); |
428 | block_size = get_blocksize(p_defs); |
429 | /* get the number of child device */ |
429 | /* get the number of child device */ |
430 | child_device_num = (block_size - sizeof(*p_defs)) / |
430 | child_device_num = (block_size - sizeof(*p_defs)) / |
431 | p_defs->child_dev_size; |
431 | p_defs->child_dev_size; |
432 | count = 0; |
432 | count = 0; |
433 | for (i = 0; i < child_device_num; i++) { |
433 | for (i = 0; i < child_device_num; i++) { |
434 | child = &child_device_ptr(p_defs, i)->old; |
434 | child = &child_device_ptr(p_defs, i)->old; |
435 | if (!child->device_type) { |
435 | if (!child->device_type) { |
436 | /* skip the device block if device type is invalid */ |
436 | /* skip the device block if device type is invalid */ |
437 | continue; |
437 | continue; |
438 | } |
438 | } |
439 | if (child->slave_addr != SLAVE_ADDR1 && |
439 | if (child->slave_addr != SLAVE_ADDR1 && |
440 | child->slave_addr != SLAVE_ADDR2) { |
440 | child->slave_addr != SLAVE_ADDR2) { |
441 | /* |
441 | /* |
442 | * If the slave address is neither 0x70 nor 0x72, |
442 | * If the slave address is neither 0x70 nor 0x72, |
443 | * it is not a SDVO device. Skip it. |
443 | * it is not a SDVO device. Skip it. |
444 | */ |
444 | */ |
445 | continue; |
445 | continue; |
446 | } |
446 | } |
447 | if (child->dvo_port != DEVICE_PORT_DVOB && |
447 | if (child->dvo_port != DEVICE_PORT_DVOB && |
448 | child->dvo_port != DEVICE_PORT_DVOC) { |
448 | child->dvo_port != DEVICE_PORT_DVOC) { |
449 | /* skip the incorrect SDVO port */ |
449 | /* skip the incorrect SDVO port */ |
450 | DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n"); |
450 | DRM_DEBUG_KMS("Incorrect SDVO port. Skip it\n"); |
451 | continue; |
451 | continue; |
452 | } |
452 | } |
453 | DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on" |
453 | DRM_DEBUG_KMS("the SDVO device with slave addr %2x is found on" |
454 | " %s port\n", |
454 | " %s port\n", |
455 | child->slave_addr, |
455 | child->slave_addr, |
456 | (child->dvo_port == DEVICE_PORT_DVOB) ? |
456 | (child->dvo_port == DEVICE_PORT_DVOB) ? |
457 | "SDVOB" : "SDVOC"); |
457 | "SDVOB" : "SDVOC"); |
458 | p_mapping = &(dev_priv->sdvo_mappings[child->dvo_port - 1]); |
458 | p_mapping = &(dev_priv->sdvo_mappings[child->dvo_port - 1]); |
459 | if (!p_mapping->initialized) { |
459 | if (!p_mapping->initialized) { |
460 | p_mapping->dvo_port = child->dvo_port; |
460 | p_mapping->dvo_port = child->dvo_port; |
461 | p_mapping->slave_addr = child->slave_addr; |
461 | p_mapping->slave_addr = child->slave_addr; |
462 | p_mapping->dvo_wiring = child->dvo_wiring; |
462 | p_mapping->dvo_wiring = child->dvo_wiring; |
463 | p_mapping->ddc_pin = child->ddc_pin; |
463 | p_mapping->ddc_pin = child->ddc_pin; |
464 | p_mapping->i2c_pin = child->i2c_pin; |
464 | p_mapping->i2c_pin = child->i2c_pin; |
465 | p_mapping->initialized = 1; |
465 | p_mapping->initialized = 1; |
466 | DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n", |
466 | DRM_DEBUG_KMS("SDVO device: dvo=%x, addr=%x, wiring=%d, ddc_pin=%d, i2c_pin=%d\n", |
467 | p_mapping->dvo_port, |
467 | p_mapping->dvo_port, |
468 | p_mapping->slave_addr, |
468 | p_mapping->slave_addr, |
469 | p_mapping->dvo_wiring, |
469 | p_mapping->dvo_wiring, |
470 | p_mapping->ddc_pin, |
470 | p_mapping->ddc_pin, |
471 | p_mapping->i2c_pin); |
471 | p_mapping->i2c_pin); |
472 | } else { |
472 | } else { |
473 | DRM_DEBUG_KMS("Maybe one SDVO port is shared by " |
473 | DRM_DEBUG_KMS("Maybe one SDVO port is shared by " |
474 | "two SDVO device.\n"); |
474 | "two SDVO device.\n"); |
475 | } |
475 | } |
476 | if (child->slave2_addr) { |
476 | if (child->slave2_addr) { |
477 | /* Maybe this is a SDVO device with multiple inputs */ |
477 | /* Maybe this is a SDVO device with multiple inputs */ |
478 | /* And the mapping info is not added */ |
478 | /* And the mapping info is not added */ |
479 | DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this" |
479 | DRM_DEBUG_KMS("there exists the slave2_addr. Maybe this" |
480 | " is a SDVO device with multiple inputs.\n"); |
480 | " is a SDVO device with multiple inputs.\n"); |
481 | } |
481 | } |
482 | count++; |
482 | count++; |
483 | } |
483 | } |
484 | 484 | ||
485 | if (!count) { |
485 | if (!count) { |
486 | /* No SDVO device info is found */ |
486 | /* No SDVO device info is found */ |
487 | DRM_DEBUG_KMS("No SDVO device info is found in VBT\n"); |
487 | DRM_DEBUG_KMS("No SDVO device info is found in VBT\n"); |
488 | } |
488 | } |
489 | return; |
489 | return; |
490 | } |
490 | } |
491 | 491 | ||
492 | static void |
492 | static void |
493 | parse_driver_features(struct drm_i915_private *dev_priv, |
493 | parse_driver_features(struct drm_i915_private *dev_priv, |
494 | const struct bdb_header *bdb) |
494 | const struct bdb_header *bdb) |
495 | { |
495 | { |
496 | const struct bdb_driver_features *driver; |
496 | const struct bdb_driver_features *driver; |
497 | 497 | ||
498 | driver = find_section(bdb, BDB_DRIVER_FEATURES); |
498 | driver = find_section(bdb, BDB_DRIVER_FEATURES); |
499 | if (!driver) |
499 | if (!driver) |
500 | return; |
500 | return; |
501 | 501 | ||
502 | if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP) |
502 | if (driver->lvds_config == BDB_DRIVER_FEATURE_EDP) |
503 | dev_priv->vbt.edp_support = 1; |
503 | dev_priv->vbt.edp_support = 1; |
504 | 504 | ||
505 | if (driver->dual_frequency) |
505 | if (driver->dual_frequency) |
506 | dev_priv->render_reclock_avail = true; |
506 | dev_priv->render_reclock_avail = true; |
507 | 507 | ||
508 | DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled); |
508 | DRM_DEBUG_KMS("DRRS State Enabled:%d\n", driver->drrs_enabled); |
509 | /* |
509 | /* |
510 | * If DRRS is not supported, drrs_type has to be set to 0. |
510 | * If DRRS is not supported, drrs_type has to be set to 0. |
511 | * This is because, VBT is configured in such a way that |
511 | * This is because, VBT is configured in such a way that |
512 | * static DRRS is 0 and DRRS not supported is represented by |
512 | * static DRRS is 0 and DRRS not supported is represented by |
513 | * driver->drrs_enabled=false |
513 | * driver->drrs_enabled=false |
514 | */ |
514 | */ |
515 | if (!driver->drrs_enabled) |
515 | if (!driver->drrs_enabled) |
516 | dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED; |
516 | dev_priv->vbt.drrs_type = DRRS_NOT_SUPPORTED; |
517 | } |
517 | } |
518 | 518 | ||
519 | static void |
519 | static void |
520 | parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) |
520 | parse_edp(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) |
521 | { |
521 | { |
522 | const struct bdb_edp *edp; |
522 | const struct bdb_edp *edp; |
523 | const struct edp_power_seq *edp_pps; |
523 | const struct edp_power_seq *edp_pps; |
524 | const struct edp_link_params *edp_link_params; |
524 | const struct edp_link_params *edp_link_params; |
525 | 525 | ||
526 | edp = find_section(bdb, BDB_EDP); |
526 | edp = find_section(bdb, BDB_EDP); |
527 | if (!edp) { |
527 | if (!edp) { |
528 | if (dev_priv->vbt.edp_support) |
528 | if (dev_priv->vbt.edp_support) |
529 | DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported.\n"); |
529 | DRM_DEBUG_KMS("No eDP BDB found but eDP panel supported.\n"); |
530 | return; |
530 | return; |
531 | } |
531 | } |
532 | 532 | ||
533 | switch ((edp->color_depth >> (panel_type * 2)) & 3) { |
533 | switch ((edp->color_depth >> (panel_type * 2)) & 3) { |
534 | case EDP_18BPP: |
534 | case EDP_18BPP: |
535 | dev_priv->vbt.edp_bpp = 18; |
535 | dev_priv->vbt.edp_bpp = 18; |
536 | break; |
536 | break; |
537 | case EDP_24BPP: |
537 | case EDP_24BPP: |
538 | dev_priv->vbt.edp_bpp = 24; |
538 | dev_priv->vbt.edp_bpp = 24; |
539 | break; |
539 | break; |
540 | case EDP_30BPP: |
540 | case EDP_30BPP: |
541 | dev_priv->vbt.edp_bpp = 30; |
541 | dev_priv->vbt.edp_bpp = 30; |
542 | break; |
542 | break; |
543 | } |
543 | } |
544 | 544 | ||
545 | /* Get the eDP sequencing and link info */ |
545 | /* Get the eDP sequencing and link info */ |
546 | edp_pps = &edp->power_seqs[panel_type]; |
546 | edp_pps = &edp->power_seqs[panel_type]; |
547 | edp_link_params = &edp->link_params[panel_type]; |
547 | edp_link_params = &edp->link_params[panel_type]; |
548 | 548 | ||
549 | dev_priv->vbt.edp_pps = *edp_pps; |
549 | dev_priv->vbt.edp_pps = *edp_pps; |
550 | 550 | ||
551 | switch (edp_link_params->rate) { |
551 | switch (edp_link_params->rate) { |
552 | case EDP_RATE_1_62: |
552 | case EDP_RATE_1_62: |
553 | dev_priv->vbt.edp_rate = DP_LINK_BW_1_62; |
553 | dev_priv->vbt.edp_rate = DP_LINK_BW_1_62; |
554 | break; |
554 | break; |
555 | case EDP_RATE_2_7: |
555 | case EDP_RATE_2_7: |
556 | dev_priv->vbt.edp_rate = DP_LINK_BW_2_7; |
556 | dev_priv->vbt.edp_rate = DP_LINK_BW_2_7; |
557 | break; |
557 | break; |
558 | default: |
558 | default: |
559 | DRM_DEBUG_KMS("VBT has unknown eDP link rate value %u\n", |
559 | DRM_DEBUG_KMS("VBT has unknown eDP link rate value %u\n", |
560 | edp_link_params->rate); |
560 | edp_link_params->rate); |
561 | break; |
561 | break; |
562 | } |
562 | } |
563 | 563 | ||
564 | switch (edp_link_params->lanes) { |
564 | switch (edp_link_params->lanes) { |
565 | case EDP_LANE_1: |
565 | case EDP_LANE_1: |
566 | dev_priv->vbt.edp_lanes = 1; |
566 | dev_priv->vbt.edp_lanes = 1; |
567 | break; |
567 | break; |
568 | case EDP_LANE_2: |
568 | case EDP_LANE_2: |
569 | dev_priv->vbt.edp_lanes = 2; |
569 | dev_priv->vbt.edp_lanes = 2; |
570 | break; |
570 | break; |
571 | case EDP_LANE_4: |
571 | case EDP_LANE_4: |
572 | dev_priv->vbt.edp_lanes = 4; |
572 | dev_priv->vbt.edp_lanes = 4; |
573 | break; |
573 | break; |
574 | default: |
574 | default: |
575 | DRM_DEBUG_KMS("VBT has unknown eDP lane count value %u\n", |
575 | DRM_DEBUG_KMS("VBT has unknown eDP lane count value %u\n", |
576 | edp_link_params->lanes); |
576 | edp_link_params->lanes); |
577 | break; |
577 | break; |
578 | } |
578 | } |
579 | 579 | ||
580 | switch (edp_link_params->preemphasis) { |
580 | switch (edp_link_params->preemphasis) { |
581 | case EDP_PREEMPHASIS_NONE: |
581 | case EDP_PREEMPHASIS_NONE: |
582 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_0; |
582 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_0; |
583 | break; |
583 | break; |
584 | case EDP_PREEMPHASIS_3_5dB: |
584 | case EDP_PREEMPHASIS_3_5dB: |
585 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_1; |
585 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_1; |
586 | break; |
586 | break; |
587 | case EDP_PREEMPHASIS_6dB: |
587 | case EDP_PREEMPHASIS_6dB: |
588 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_2; |
588 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_2; |
589 | break; |
589 | break; |
590 | case EDP_PREEMPHASIS_9_5dB: |
590 | case EDP_PREEMPHASIS_9_5dB: |
591 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_3; |
591 | dev_priv->vbt.edp_preemphasis = DP_TRAIN_PRE_EMPH_LEVEL_3; |
592 | break; |
592 | break; |
593 | default: |
593 | default: |
594 | DRM_DEBUG_KMS("VBT has unknown eDP pre-emphasis value %u\n", |
594 | DRM_DEBUG_KMS("VBT has unknown eDP pre-emphasis value %u\n", |
595 | edp_link_params->preemphasis); |
595 | edp_link_params->preemphasis); |
596 | break; |
596 | break; |
597 | } |
597 | } |
598 | 598 | ||
599 | switch (edp_link_params->vswing) { |
599 | switch (edp_link_params->vswing) { |
600 | case EDP_VSWING_0_4V: |
600 | case EDP_VSWING_0_4V: |
601 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_0; |
601 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_0; |
602 | break; |
602 | break; |
603 | case EDP_VSWING_0_6V: |
603 | case EDP_VSWING_0_6V: |
604 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_1; |
604 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_1; |
605 | break; |
605 | break; |
606 | case EDP_VSWING_0_8V: |
606 | case EDP_VSWING_0_8V: |
607 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
607 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_2; |
608 | break; |
608 | break; |
609 | case EDP_VSWING_1_2V: |
609 | case EDP_VSWING_1_2V: |
610 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
610 | dev_priv->vbt.edp_vswing = DP_TRAIN_VOLTAGE_SWING_LEVEL_3; |
611 | break; |
611 | break; |
612 | default: |
612 | default: |
613 | DRM_DEBUG_KMS("VBT has unknown eDP voltage swing value %u\n", |
613 | DRM_DEBUG_KMS("VBT has unknown eDP voltage swing value %u\n", |
614 | edp_link_params->vswing); |
614 | edp_link_params->vswing); |
615 | break; |
615 | break; |
616 | } |
616 | } |
617 | 617 | ||
618 | if (bdb->version >= 173) { |
618 | if (bdb->version >= 173) { |
619 | uint8_t vswing; |
619 | uint8_t vswing; |
620 | 620 | ||
621 | /* Don't read from VBT if module parameter has valid value*/ |
621 | /* Don't read from VBT if module parameter has valid value*/ |
622 | if (i915.edp_vswing) { |
622 | if (i915.edp_vswing) { |
623 | dev_priv->edp_low_vswing = i915.edp_vswing == 1; |
623 | dev_priv->edp_low_vswing = i915.edp_vswing == 1; |
624 | } else { |
624 | } else { |
625 | vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF; |
625 | vswing = (edp->edp_vswing_preemph >> (panel_type * 4)) & 0xF; |
626 | dev_priv->edp_low_vswing = vswing == 0; |
626 | dev_priv->edp_low_vswing = vswing == 0; |
627 | } |
627 | } |
628 | } |
628 | } |
629 | } |
629 | } |
630 | 630 | ||
631 | static void |
631 | static void |
632 | parse_psr(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) |
632 | parse_psr(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) |
633 | { |
633 | { |
634 | const struct bdb_psr *psr; |
634 | const struct bdb_psr *psr; |
635 | const struct psr_table *psr_table; |
635 | const struct psr_table *psr_table; |
636 | 636 | ||
637 | psr = find_section(bdb, BDB_PSR); |
637 | psr = find_section(bdb, BDB_PSR); |
638 | if (!psr) { |
638 | if (!psr) { |
639 | DRM_DEBUG_KMS("No PSR BDB found.\n"); |
639 | DRM_DEBUG_KMS("No PSR BDB found.\n"); |
640 | return; |
640 | return; |
641 | } |
641 | } |
642 | 642 | ||
643 | psr_table = &psr->psr_table[panel_type]; |
643 | psr_table = &psr->psr_table[panel_type]; |
644 | 644 | ||
645 | dev_priv->vbt.psr.full_link = psr_table->full_link; |
645 | dev_priv->vbt.psr.full_link = psr_table->full_link; |
646 | dev_priv->vbt.psr.require_aux_wakeup = psr_table->require_aux_to_wakeup; |
646 | dev_priv->vbt.psr.require_aux_wakeup = psr_table->require_aux_to_wakeup; |
647 | 647 | ||
648 | /* Allowed VBT values goes from 0 to 15 */ |
648 | /* Allowed VBT values goes from 0 to 15 */ |
649 | dev_priv->vbt.psr.idle_frames = psr_table->idle_frames < 0 ? 0 : |
649 | dev_priv->vbt.psr.idle_frames = psr_table->idle_frames < 0 ? 0 : |
650 | psr_table->idle_frames > 15 ? 15 : psr_table->idle_frames; |
650 | psr_table->idle_frames > 15 ? 15 : psr_table->idle_frames; |
651 | 651 | ||
652 | switch (psr_table->lines_to_wait) { |
652 | switch (psr_table->lines_to_wait) { |
653 | case 0: |
653 | case 0: |
654 | dev_priv->vbt.psr.lines_to_wait = PSR_0_LINES_TO_WAIT; |
654 | dev_priv->vbt.psr.lines_to_wait = PSR_0_LINES_TO_WAIT; |
655 | break; |
655 | break; |
656 | case 1: |
656 | case 1: |
657 | dev_priv->vbt.psr.lines_to_wait = PSR_1_LINE_TO_WAIT; |
657 | dev_priv->vbt.psr.lines_to_wait = PSR_1_LINE_TO_WAIT; |
658 | break; |
658 | break; |
659 | case 2: |
659 | case 2: |
660 | dev_priv->vbt.psr.lines_to_wait = PSR_4_LINES_TO_WAIT; |
660 | dev_priv->vbt.psr.lines_to_wait = PSR_4_LINES_TO_WAIT; |
661 | break; |
661 | break; |
662 | case 3: |
662 | case 3: |
663 | dev_priv->vbt.psr.lines_to_wait = PSR_8_LINES_TO_WAIT; |
663 | dev_priv->vbt.psr.lines_to_wait = PSR_8_LINES_TO_WAIT; |
664 | break; |
664 | break; |
665 | default: |
665 | default: |
666 | DRM_DEBUG_KMS("VBT has unknown PSR lines to wait %u\n", |
666 | DRM_DEBUG_KMS("VBT has unknown PSR lines to wait %u\n", |
667 | psr_table->lines_to_wait); |
667 | psr_table->lines_to_wait); |
668 | break; |
668 | break; |
669 | } |
669 | } |
670 | 670 | ||
671 | dev_priv->vbt.psr.tp1_wakeup_time = psr_table->tp1_wakeup_time; |
671 | dev_priv->vbt.psr.tp1_wakeup_time = psr_table->tp1_wakeup_time; |
672 | dev_priv->vbt.psr.tp2_tp3_wakeup_time = psr_table->tp2_tp3_wakeup_time; |
672 | dev_priv->vbt.psr.tp2_tp3_wakeup_time = psr_table->tp2_tp3_wakeup_time; |
673 | } |
673 | } |
674 | 674 | ||
675 | static u8 *goto_next_sequence(u8 *data, int *size) |
675 | static u8 *goto_next_sequence(u8 *data, int *size) |
676 | { |
676 | { |
677 | u16 len; |
677 | u16 len; |
678 | int tmp = *size; |
678 | int tmp = *size; |
679 | 679 | ||
680 | if (--tmp < 0) |
680 | if (--tmp < 0) |
681 | return NULL; |
681 | return NULL; |
682 | 682 | ||
683 | /* goto first element */ |
683 | /* goto first element */ |
684 | data++; |
684 | data++; |
685 | while (1) { |
685 | while (1) { |
686 | switch (*data) { |
686 | switch (*data) { |
687 | case MIPI_SEQ_ELEM_SEND_PKT: |
687 | case MIPI_SEQ_ELEM_SEND_PKT: |
688 | /* |
688 | /* |
689 | * skip by this element payload size |
689 | * skip by this element payload size |
690 | * skip elem id, command flag and data type |
690 | * skip elem id, command flag and data type |
691 | */ |
691 | */ |
692 | tmp -= 5; |
692 | tmp -= 5; |
693 | if (tmp < 0) |
693 | if (tmp < 0) |
694 | return NULL; |
694 | return NULL; |
695 | 695 | ||
696 | data += 3; |
696 | data += 3; |
697 | len = *((u16 *)data); |
697 | len = *((u16 *)data); |
698 | 698 | ||
699 | tmp -= len; |
699 | tmp -= len; |
700 | if (tmp < 0) |
700 | if (tmp < 0) |
701 | return NULL; |
701 | return NULL; |
702 | 702 | ||
703 | /* skip by len */ |
703 | /* skip by len */ |
704 | data = data + 2 + len; |
704 | data = data + 2 + len; |
705 | break; |
705 | break; |
706 | case MIPI_SEQ_ELEM_DELAY: |
706 | case MIPI_SEQ_ELEM_DELAY: |
707 | /* skip by elem id, and delay is 4 bytes */ |
707 | /* skip by elem id, and delay is 4 bytes */ |
708 | tmp -= 5; |
708 | tmp -= 5; |
709 | if (tmp < 0) |
709 | if (tmp < 0) |
710 | return NULL; |
710 | return NULL; |
711 | 711 | ||
712 | data += 5; |
712 | data += 5; |
713 | break; |
713 | break; |
714 | case MIPI_SEQ_ELEM_GPIO: |
714 | case MIPI_SEQ_ELEM_GPIO: |
715 | tmp -= 3; |
715 | tmp -= 3; |
716 | if (tmp < 0) |
716 | if (tmp < 0) |
717 | return NULL; |
717 | return NULL; |
718 | 718 | ||
719 | data += 3; |
719 | data += 3; |
720 | break; |
720 | break; |
721 | default: |
721 | default: |
722 | DRM_ERROR("Unknown element\n"); |
722 | DRM_ERROR("Unknown element\n"); |
723 | return NULL; |
723 | return NULL; |
724 | } |
724 | } |
725 | 725 | ||
726 | /* end of sequence ? */ |
726 | /* end of sequence ? */ |
727 | if (*data == 0) |
727 | if (*data == 0) |
728 | break; |
728 | break; |
729 | } |
729 | } |
730 | 730 | ||
731 | /* goto next sequence or end of block byte */ |
731 | /* goto next sequence or end of block byte */ |
732 | if (--tmp < 0) |
732 | if (--tmp < 0) |
733 | return NULL; |
733 | return NULL; |
734 | 734 | ||
735 | data++; |
735 | data++; |
736 | 736 | ||
737 | /* update amount of data left for the sequence block to be parsed */ |
737 | /* update amount of data left for the sequence block to be parsed */ |
738 | *size = tmp; |
738 | *size = tmp; |
739 | return data; |
739 | return data; |
740 | } |
740 | } |
741 | 741 | ||
742 | static void |
742 | static void |
743 | parse_mipi(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) |
743 | parse_mipi(struct drm_i915_private *dev_priv, const struct bdb_header *bdb) |
744 | { |
744 | { |
745 | const struct bdb_mipi_config *start; |
745 | const struct bdb_mipi_config *start; |
746 | const struct bdb_mipi_sequence *sequence; |
746 | const struct bdb_mipi_sequence *sequence; |
747 | const struct mipi_config *config; |
747 | const struct mipi_config *config; |
748 | const struct mipi_pps_data *pps; |
748 | const struct mipi_pps_data *pps; |
749 | u8 *data; |
749 | u8 *data; |
750 | const u8 *seq_data; |
750 | const u8 *seq_data; |
751 | int i, panel_id, seq_size; |
751 | int i, panel_id, seq_size; |
752 | u16 block_size; |
752 | u16 block_size; |
753 | 753 | ||
754 | /* parse MIPI blocks only if LFP type is MIPI */ |
754 | /* parse MIPI blocks only if LFP type is MIPI */ |
755 | if (!dev_priv->vbt.has_mipi) |
755 | if (!dev_priv->vbt.has_mipi) |
756 | return; |
756 | return; |
757 | 757 | ||
758 | /* Initialize this to undefined indicating no generic MIPI support */ |
758 | /* Initialize this to undefined indicating no generic MIPI support */ |
759 | dev_priv->vbt.dsi.panel_id = MIPI_DSI_UNDEFINED_PANEL_ID; |
759 | dev_priv->vbt.dsi.panel_id = MIPI_DSI_UNDEFINED_PANEL_ID; |
760 | 760 | ||
761 | /* Block #40 is already parsed and panel_fixed_mode is |
761 | /* Block #40 is already parsed and panel_fixed_mode is |
762 | * stored in dev_priv->lfp_lvds_vbt_mode |
762 | * stored in dev_priv->lfp_lvds_vbt_mode |
763 | * resuse this when needed |
763 | * resuse this when needed |
764 | */ |
764 | */ |
765 | 765 | ||
766 | /* Parse #52 for panel index used from panel_type already |
766 | /* Parse #52 for panel index used from panel_type already |
767 | * parsed |
767 | * parsed |
768 | */ |
768 | */ |
769 | start = find_section(bdb, BDB_MIPI_CONFIG); |
769 | start = find_section(bdb, BDB_MIPI_CONFIG); |
770 | if (!start) { |
770 | if (!start) { |
771 | DRM_DEBUG_KMS("No MIPI config BDB found"); |
771 | DRM_DEBUG_KMS("No MIPI config BDB found"); |
772 | return; |
772 | return; |
773 | } |
773 | } |
774 | 774 | ||
775 | DRM_DEBUG_DRIVER("Found MIPI Config block, panel index = %d\n", |
775 | DRM_DEBUG_DRIVER("Found MIPI Config block, panel index = %d\n", |
776 | panel_type); |
776 | panel_type); |
777 | 777 | ||
778 | /* |
778 | /* |
779 | * get hold of the correct configuration block and pps data as per |
779 | * get hold of the correct configuration block and pps data as per |
780 | * the panel_type as index |
780 | * the panel_type as index |
781 | */ |
781 | */ |
782 | config = &start->config[panel_type]; |
782 | config = &start->config[panel_type]; |
783 | pps = &start->pps[panel_type]; |
783 | pps = &start->pps[panel_type]; |
784 | 784 | ||
785 | /* store as of now full data. Trim when we realise all is not needed */ |
785 | /* store as of now full data. Trim when we realise all is not needed */ |
786 | dev_priv->vbt.dsi.config = kmemdup(config, sizeof(struct mipi_config), GFP_KERNEL); |
786 | dev_priv->vbt.dsi.config = kmemdup(config, sizeof(struct mipi_config), GFP_KERNEL); |
787 | if (!dev_priv->vbt.dsi.config) |
787 | if (!dev_priv->vbt.dsi.config) |
788 | return; |
788 | return; |
789 | 789 | ||
790 | dev_priv->vbt.dsi.pps = kmemdup(pps, sizeof(struct mipi_pps_data), GFP_KERNEL); |
790 | dev_priv->vbt.dsi.pps = kmemdup(pps, sizeof(struct mipi_pps_data), GFP_KERNEL); |
791 | if (!dev_priv->vbt.dsi.pps) { |
791 | if (!dev_priv->vbt.dsi.pps) { |
792 | kfree(dev_priv->vbt.dsi.config); |
792 | kfree(dev_priv->vbt.dsi.config); |
793 | return; |
793 | return; |
794 | } |
794 | } |
795 | 795 | ||
796 | /* We have mandatory mipi config blocks. Initialize as generic panel */ |
796 | /* We have mandatory mipi config blocks. Initialize as generic panel */ |
797 | dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID; |
797 | dev_priv->vbt.dsi.panel_id = MIPI_DSI_GENERIC_PANEL_ID; |
798 | 798 | ||
799 | /* Check if we have sequence block as well */ |
799 | /* Check if we have sequence block as well */ |
800 | sequence = find_section(bdb, BDB_MIPI_SEQUENCE); |
800 | sequence = find_section(bdb, BDB_MIPI_SEQUENCE); |
801 | if (!sequence) { |
801 | if (!sequence) { |
802 | DRM_DEBUG_KMS("No MIPI Sequence found, parsing complete\n"); |
802 | DRM_DEBUG_KMS("No MIPI Sequence found, parsing complete\n"); |
803 | return; |
803 | return; |
804 | } |
804 | } |
805 | 805 | ||
806 | /* Fail gracefully for forward incompatible sequence block. */ |
806 | /* Fail gracefully for forward incompatible sequence block. */ |
807 | if (sequence->version >= 3) { |
807 | if (sequence->version >= 3) { |
808 | DRM_ERROR("Unable to parse MIPI Sequence Block v3+\n"); |
808 | DRM_ERROR("Unable to parse MIPI Sequence Block v3+\n"); |
809 | return; |
809 | return; |
810 | } |
810 | } |
811 | 811 | ||
812 | DRM_DEBUG_DRIVER("Found MIPI sequence block\n"); |
812 | DRM_DEBUG_DRIVER("Found MIPI sequence block\n"); |
813 | 813 | ||
814 | block_size = get_blocksize(sequence); |
814 | block_size = get_blocksize(sequence); |
815 | 815 | ||
816 | /* |
816 | /* |
817 | * parse the sequence block for individual sequences |
817 | * parse the sequence block for individual sequences |
818 | */ |
818 | */ |
819 | dev_priv->vbt.dsi.seq_version = sequence->version; |
819 | dev_priv->vbt.dsi.seq_version = sequence->version; |
820 | 820 | ||
821 | seq_data = &sequence->data[0]; |
821 | seq_data = &sequence->data[0]; |
822 | 822 | ||
823 | /* |
823 | /* |
824 | * sequence block is variable length and hence we need to parse and |
824 | * sequence block is variable length and hence we need to parse and |
825 | * get the sequence data for specific panel id |
825 | * get the sequence data for specific panel id |
826 | */ |
826 | */ |
827 | for (i = 0; i < MAX_MIPI_CONFIGURATIONS; i++) { |
827 | for (i = 0; i < MAX_MIPI_CONFIGURATIONS; i++) { |
828 | panel_id = *seq_data; |
828 | panel_id = *seq_data; |
829 | seq_size = *((u16 *) (seq_data + 1)); |
829 | seq_size = *((u16 *) (seq_data + 1)); |
830 | if (panel_id == panel_type) |
830 | if (panel_id == panel_type) |
831 | break; |
831 | break; |
832 | 832 | ||
833 | /* skip the sequence including seq header of 3 bytes */ |
833 | /* skip the sequence including seq header of 3 bytes */ |
834 | seq_data = seq_data + 3 + seq_size; |
834 | seq_data = seq_data + 3 + seq_size; |
835 | if ((seq_data - &sequence->data[0]) > block_size) { |
835 | if ((seq_data - &sequence->data[0]) > block_size) { |
836 | DRM_ERROR("Sequence start is beyond sequence block size, corrupted sequence block\n"); |
836 | DRM_ERROR("Sequence start is beyond sequence block size, corrupted sequence block\n"); |
837 | return; |
837 | return; |
838 | } |
838 | } |
839 | } |
839 | } |
840 | 840 | ||
841 | if (i == MAX_MIPI_CONFIGURATIONS) { |
841 | if (i == MAX_MIPI_CONFIGURATIONS) { |
842 | DRM_ERROR("Sequence block detected but no valid configuration\n"); |
842 | DRM_ERROR("Sequence block detected but no valid configuration\n"); |
843 | return; |
843 | return; |
844 | } |
844 | } |
845 | 845 | ||
846 | /* check if found sequence is completely within the sequence block |
846 | /* check if found sequence is completely within the sequence block |
847 | * just being paranoid */ |
847 | * just being paranoid */ |
848 | if (seq_size > block_size) { |
848 | if (seq_size > block_size) { |
849 | DRM_ERROR("Corrupted sequence/size, bailing out\n"); |
849 | DRM_ERROR("Corrupted sequence/size, bailing out\n"); |
850 | return; |
850 | return; |
851 | } |
851 | } |
852 | 852 | ||
853 | /* skip the panel id(1 byte) and seq size(2 bytes) */ |
853 | /* skip the panel id(1 byte) and seq size(2 bytes) */ |
854 | dev_priv->vbt.dsi.data = kmemdup(seq_data + 3, seq_size, GFP_KERNEL); |
854 | dev_priv->vbt.dsi.data = kmemdup(seq_data + 3, seq_size, GFP_KERNEL); |
855 | if (!dev_priv->vbt.dsi.data) |
855 | if (!dev_priv->vbt.dsi.data) |
856 | return; |
856 | return; |
857 | 857 | ||
858 | /* |
858 | /* |
859 | * loop into the sequence data and split into multiple sequneces |
859 | * loop into the sequence data and split into multiple sequneces |
860 | * There are only 5 types of sequences as of now |
860 | * There are only 5 types of sequences as of now |
861 | */ |
861 | */ |
862 | data = dev_priv->vbt.dsi.data; |
862 | data = dev_priv->vbt.dsi.data; |
863 | dev_priv->vbt.dsi.size = seq_size; |
863 | dev_priv->vbt.dsi.size = seq_size; |
864 | 864 | ||
865 | /* two consecutive 0x00 indicate end of all sequences */ |
865 | /* two consecutive 0x00 indicate end of all sequences */ |
866 | while (1) { |
866 | while (1) { |
867 | int seq_id = *data; |
867 | int seq_id = *data; |
868 | if (MIPI_SEQ_MAX > seq_id && seq_id > MIPI_SEQ_UNDEFINED) { |
868 | if (MIPI_SEQ_MAX > seq_id && seq_id > MIPI_SEQ_UNDEFINED) { |
869 | dev_priv->vbt.dsi.sequence[seq_id] = data; |
869 | dev_priv->vbt.dsi.sequence[seq_id] = data; |
870 | DRM_DEBUG_DRIVER("Found mipi sequence - %d\n", seq_id); |
870 | DRM_DEBUG_DRIVER("Found mipi sequence - %d\n", seq_id); |
871 | } else { |
871 | } else { |
872 | DRM_ERROR("undefined sequence\n"); |
872 | DRM_ERROR("undefined sequence\n"); |
873 | goto err; |
873 | goto err; |
874 | } |
874 | } |
875 | 875 | ||
876 | /* partial parsing to skip elements */ |
876 | /* partial parsing to skip elements */ |
877 | data = goto_next_sequence(data, &seq_size); |
877 | data = goto_next_sequence(data, &seq_size); |
878 | 878 | ||
879 | if (data == NULL) { |
879 | if (data == NULL) { |
880 | DRM_ERROR("Sequence elements going beyond block itself. Sequence block parsing failed\n"); |
880 | DRM_ERROR("Sequence elements going beyond block itself. Sequence block parsing failed\n"); |
881 | goto err; |
881 | goto err; |
882 | } |
882 | } |
883 | 883 | ||
884 | if (*data == 0) |
884 | if (*data == 0) |
885 | break; /* end of sequence reached */ |
885 | break; /* end of sequence reached */ |
886 | } |
886 | } |
887 | 887 | ||
888 | DRM_DEBUG_DRIVER("MIPI related vbt parsing complete\n"); |
888 | DRM_DEBUG_DRIVER("MIPI related vbt parsing complete\n"); |
889 | return; |
889 | return; |
890 | err: |
890 | err: |
891 | kfree(dev_priv->vbt.dsi.data); |
891 | kfree(dev_priv->vbt.dsi.data); |
892 | dev_priv->vbt.dsi.data = NULL; |
892 | dev_priv->vbt.dsi.data = NULL; |
893 | 893 | ||
894 | /* error during parsing so set all pointers to null |
894 | /* error during parsing so set all pointers to null |
895 | * because of partial parsing */ |
895 | * because of partial parsing */ |
896 | memset(dev_priv->vbt.dsi.sequence, 0, sizeof(dev_priv->vbt.dsi.sequence)); |
896 | memset(dev_priv->vbt.dsi.sequence, 0, sizeof(dev_priv->vbt.dsi.sequence)); |
897 | } |
897 | } |
898 | 898 | ||
899 | static u8 translate_iboost(u8 val) |
899 | static u8 translate_iboost(u8 val) |
900 | { |
900 | { |
901 | static const u8 mapping[] = { 1, 3, 7 }; /* See VBT spec */ |
901 | static const u8 mapping[] = { 1, 3, 7 }; /* See VBT spec */ |
902 | 902 | ||
903 | if (val >= ARRAY_SIZE(mapping)) { |
903 | if (val >= ARRAY_SIZE(mapping)) { |
904 | DRM_DEBUG_KMS("Unsupported I_boost value found in VBT (%d), display may not work properly\n", val); |
904 | DRM_DEBUG_KMS("Unsupported I_boost value found in VBT (%d), display may not work properly\n", val); |
905 | return 0; |
905 | return 0; |
906 | } |
906 | } |
907 | return mapping[val]; |
907 | return mapping[val]; |
908 | } |
908 | } |
909 | 909 | ||
910 | static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, |
910 | static void parse_ddi_port(struct drm_i915_private *dev_priv, enum port port, |
911 | const struct bdb_header *bdb) |
911 | const struct bdb_header *bdb) |
912 | { |
912 | { |
913 | union child_device_config *it, *child = NULL; |
913 | union child_device_config *it, *child = NULL; |
914 | struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port]; |
914 | struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port]; |
915 | uint8_t hdmi_level_shift; |
915 | uint8_t hdmi_level_shift; |
916 | int i, j; |
916 | int i, j; |
917 | bool is_dvi, is_hdmi, is_dp, is_edp, is_crt; |
917 | bool is_dvi, is_hdmi, is_dp, is_edp, is_crt; |
918 | uint8_t aux_channel, ddc_pin; |
918 | uint8_t aux_channel, ddc_pin; |
919 | /* Each DDI port can have more than one value on the "DVO Port" field, |
919 | /* Each DDI port can have more than one value on the "DVO Port" field, |
920 | * so look for all the possible values for each port and abort if more |
920 | * so look for all the possible values for each port and abort if more |
921 | * than one is found. */ |
921 | * than one is found. */ |
922 | int dvo_ports[][3] = { |
922 | int dvo_ports[][3] = { |
923 | {DVO_PORT_HDMIA, DVO_PORT_DPA, -1}, |
923 | {DVO_PORT_HDMIA, DVO_PORT_DPA, -1}, |
924 | {DVO_PORT_HDMIB, DVO_PORT_DPB, -1}, |
924 | {DVO_PORT_HDMIB, DVO_PORT_DPB, -1}, |
925 | {DVO_PORT_HDMIC, DVO_PORT_DPC, -1}, |
925 | {DVO_PORT_HDMIC, DVO_PORT_DPC, -1}, |
926 | {DVO_PORT_HDMID, DVO_PORT_DPD, -1}, |
926 | {DVO_PORT_HDMID, DVO_PORT_DPD, -1}, |
927 | {DVO_PORT_CRT, DVO_PORT_HDMIE, DVO_PORT_DPE}, |
927 | {DVO_PORT_CRT, DVO_PORT_HDMIE, DVO_PORT_DPE}, |
928 | }; |
928 | }; |
929 | 929 | ||
930 | /* Find the child device to use, abort if more than one found. */ |
930 | /* Find the child device to use, abort if more than one found. */ |
931 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
931 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
932 | it = dev_priv->vbt.child_dev + i; |
932 | it = dev_priv->vbt.child_dev + i; |
933 | 933 | ||
934 | for (j = 0; j < 3; j++) { |
934 | for (j = 0; j < 3; j++) { |
935 | if (dvo_ports[port][j] == -1) |
935 | if (dvo_ports[port][j] == -1) |
936 | break; |
936 | break; |
937 | 937 | ||
938 | if (it->common.dvo_port == dvo_ports[port][j]) { |
938 | if (it->common.dvo_port == dvo_ports[port][j]) { |
939 | if (child) { |
939 | if (child) { |
940 | DRM_DEBUG_KMS("More than one child device for port %c in VBT.\n", |
940 | DRM_DEBUG_KMS("More than one child device for port %c in VBT.\n", |
941 | port_name(port)); |
941 | port_name(port)); |
942 | return; |
942 | return; |
943 | } |
943 | } |
944 | child = it; |
944 | child = it; |
945 | } |
945 | } |
946 | } |
946 | } |
947 | } |
947 | } |
948 | if (!child) |
948 | if (!child) |
949 | return; |
949 | return; |
950 | 950 | ||
951 | aux_channel = child->raw[25]; |
951 | aux_channel = child->raw[25]; |
952 | ddc_pin = child->common.ddc_pin; |
952 | ddc_pin = child->common.ddc_pin; |
953 | 953 | ||
954 | is_dvi = child->common.device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING; |
954 | is_dvi = child->common.device_type & DEVICE_TYPE_TMDS_DVI_SIGNALING; |
955 | is_dp = child->common.device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT; |
955 | is_dp = child->common.device_type & DEVICE_TYPE_DISPLAYPORT_OUTPUT; |
956 | is_crt = child->common.device_type & DEVICE_TYPE_ANALOG_OUTPUT; |
956 | is_crt = child->common.device_type & DEVICE_TYPE_ANALOG_OUTPUT; |
957 | is_hdmi = is_dvi && (child->common.device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0; |
957 | is_hdmi = is_dvi && (child->common.device_type & DEVICE_TYPE_NOT_HDMI_OUTPUT) == 0; |
958 | is_edp = is_dp && (child->common.device_type & DEVICE_TYPE_INTERNAL_CONNECTOR); |
958 | is_edp = is_dp && (child->common.device_type & DEVICE_TYPE_INTERNAL_CONNECTOR); |
959 | 959 | ||
960 | info->supports_dvi = is_dvi; |
960 | info->supports_dvi = is_dvi; |
961 | info->supports_hdmi = is_hdmi; |
961 | info->supports_hdmi = is_hdmi; |
962 | info->supports_dp = is_dp; |
962 | info->supports_dp = is_dp; |
963 | 963 | ||
964 | DRM_DEBUG_KMS("Port %c VBT info: DP:%d HDMI:%d DVI:%d EDP:%d CRT:%d\n", |
964 | DRM_DEBUG_KMS("Port %c VBT info: DP:%d HDMI:%d DVI:%d EDP:%d CRT:%d\n", |
965 | port_name(port), is_dp, is_hdmi, is_dvi, is_edp, is_crt); |
965 | port_name(port), is_dp, is_hdmi, is_dvi, is_edp, is_crt); |
966 | 966 | ||
967 | if (is_edp && is_dvi) |
967 | if (is_edp && is_dvi) |
968 | DRM_DEBUG_KMS("Internal DP port %c is TMDS compatible\n", |
968 | DRM_DEBUG_KMS("Internal DP port %c is TMDS compatible\n", |
969 | port_name(port)); |
969 | port_name(port)); |
970 | if (is_crt && port != PORT_E) |
970 | if (is_crt && port != PORT_E) |
971 | DRM_DEBUG_KMS("Port %c is analog\n", port_name(port)); |
971 | DRM_DEBUG_KMS("Port %c is analog\n", port_name(port)); |
972 | if (is_crt && (is_dvi || is_dp)) |
972 | if (is_crt && (is_dvi || is_dp)) |
973 | DRM_DEBUG_KMS("Analog port %c is also DP or TMDS compatible\n", |
973 | DRM_DEBUG_KMS("Analog port %c is also DP or TMDS compatible\n", |
974 | port_name(port)); |
974 | port_name(port)); |
975 | if (is_dvi && (port == PORT_A || port == PORT_E)) |
975 | if (is_dvi && (port == PORT_A || port == PORT_E)) |
976 | DRM_DEBUG_KMS("Port %c is TMDS compatible\n", port_name(port)); |
976 | DRM_DEBUG_KMS("Port %c is TMDS compatible\n", port_name(port)); |
977 | if (!is_dvi && !is_dp && !is_crt) |
977 | if (!is_dvi && !is_dp && !is_crt) |
978 | DRM_DEBUG_KMS("Port %c is not DP/TMDS/CRT compatible\n", |
978 | DRM_DEBUG_KMS("Port %c is not DP/TMDS/CRT compatible\n", |
979 | port_name(port)); |
979 | port_name(port)); |
980 | if (is_edp && (port == PORT_B || port == PORT_C || port == PORT_E)) |
980 | if (is_edp && (port == PORT_B || port == PORT_C || port == PORT_E)) |
981 | DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port)); |
981 | DRM_DEBUG_KMS("Port %c is internal DP\n", port_name(port)); |
982 | 982 | ||
983 | if (is_dvi) { |
983 | if (is_dvi) { |
984 | if (port == PORT_E) { |
984 | if (port == PORT_E) { |
985 | info->alternate_ddc_pin = ddc_pin; |
985 | info->alternate_ddc_pin = ddc_pin; |
986 | /* if DDIE share ddc pin with other port, then |
986 | /* if DDIE share ddc pin with other port, then |
987 | * dvi/hdmi couldn't exist on the shared port. |
987 | * dvi/hdmi couldn't exist on the shared port. |
988 | * Otherwise they share the same ddc bin and system |
988 | * Otherwise they share the same ddc bin and system |
989 | * couldn't communicate with them seperately. */ |
989 | * couldn't communicate with them seperately. */ |
990 | if (ddc_pin == DDC_PIN_B) { |
990 | if (ddc_pin == DDC_PIN_B) { |
991 | dev_priv->vbt.ddi_port_info[PORT_B].supports_dvi = 0; |
991 | dev_priv->vbt.ddi_port_info[PORT_B].supports_dvi = 0; |
992 | dev_priv->vbt.ddi_port_info[PORT_B].supports_hdmi = 0; |
992 | dev_priv->vbt.ddi_port_info[PORT_B].supports_hdmi = 0; |
993 | } else if (ddc_pin == DDC_PIN_C) { |
993 | } else if (ddc_pin == DDC_PIN_C) { |
994 | dev_priv->vbt.ddi_port_info[PORT_C].supports_dvi = 0; |
994 | dev_priv->vbt.ddi_port_info[PORT_C].supports_dvi = 0; |
995 | dev_priv->vbt.ddi_port_info[PORT_C].supports_hdmi = 0; |
995 | dev_priv->vbt.ddi_port_info[PORT_C].supports_hdmi = 0; |
996 | } else if (ddc_pin == DDC_PIN_D) { |
996 | } else if (ddc_pin == DDC_PIN_D) { |
997 | dev_priv->vbt.ddi_port_info[PORT_D].supports_dvi = 0; |
997 | dev_priv->vbt.ddi_port_info[PORT_D].supports_dvi = 0; |
998 | dev_priv->vbt.ddi_port_info[PORT_D].supports_hdmi = 0; |
998 | dev_priv->vbt.ddi_port_info[PORT_D].supports_hdmi = 0; |
999 | } |
999 | } |
1000 | } else if (ddc_pin == DDC_PIN_B && port != PORT_B) |
1000 | } else if (ddc_pin == DDC_PIN_B && port != PORT_B) |
1001 | DRM_DEBUG_KMS("Unexpected DDC pin for port B\n"); |
1001 | DRM_DEBUG_KMS("Unexpected DDC pin for port B\n"); |
1002 | else if (ddc_pin == DDC_PIN_C && port != PORT_C) |
1002 | else if (ddc_pin == DDC_PIN_C && port != PORT_C) |
1003 | DRM_DEBUG_KMS("Unexpected DDC pin for port C\n"); |
1003 | DRM_DEBUG_KMS("Unexpected DDC pin for port C\n"); |
1004 | else if (ddc_pin == DDC_PIN_D && port != PORT_D) |
1004 | else if (ddc_pin == DDC_PIN_D && port != PORT_D) |
1005 | DRM_DEBUG_KMS("Unexpected DDC pin for port D\n"); |
1005 | DRM_DEBUG_KMS("Unexpected DDC pin for port D\n"); |
1006 | } |
1006 | } |
1007 | 1007 | ||
1008 | if (is_dp) { |
1008 | if (is_dp) { |
1009 | if (port == PORT_E) { |
1009 | if (port == PORT_E) { |
1010 | info->alternate_aux_channel = aux_channel; |
1010 | info->alternate_aux_channel = aux_channel; |
1011 | /* if DDIE share aux channel with other port, then |
1011 | /* if DDIE share aux channel with other port, then |
1012 | * DP couldn't exist on the shared port. Otherwise |
1012 | * DP couldn't exist on the shared port. Otherwise |
1013 | * they share the same aux channel and system |
1013 | * they share the same aux channel and system |
1014 | * couldn't communicate with them seperately. */ |
1014 | * couldn't communicate with them seperately. */ |
1015 | if (aux_channel == DP_AUX_A) |
1015 | if (aux_channel == DP_AUX_A) |
1016 | dev_priv->vbt.ddi_port_info[PORT_A].supports_dp = 0; |
1016 | dev_priv->vbt.ddi_port_info[PORT_A].supports_dp = 0; |
1017 | else if (aux_channel == DP_AUX_B) |
1017 | else if (aux_channel == DP_AUX_B) |
1018 | dev_priv->vbt.ddi_port_info[PORT_B].supports_dp = 0; |
1018 | dev_priv->vbt.ddi_port_info[PORT_B].supports_dp = 0; |
1019 | else if (aux_channel == DP_AUX_C) |
1019 | else if (aux_channel == DP_AUX_C) |
1020 | dev_priv->vbt.ddi_port_info[PORT_C].supports_dp = 0; |
1020 | dev_priv->vbt.ddi_port_info[PORT_C].supports_dp = 0; |
1021 | else if (aux_channel == DP_AUX_D) |
1021 | else if (aux_channel == DP_AUX_D) |
1022 | dev_priv->vbt.ddi_port_info[PORT_D].supports_dp = 0; |
1022 | dev_priv->vbt.ddi_port_info[PORT_D].supports_dp = 0; |
1023 | } |
1023 | } |
1024 | else if (aux_channel == DP_AUX_A && port != PORT_A) |
1024 | else if (aux_channel == DP_AUX_A && port != PORT_A) |
1025 | DRM_DEBUG_KMS("Unexpected AUX channel for port A\n"); |
1025 | DRM_DEBUG_KMS("Unexpected AUX channel for port A\n"); |
1026 | else if (aux_channel == DP_AUX_B && port != PORT_B) |
1026 | else if (aux_channel == DP_AUX_B && port != PORT_B) |
1027 | DRM_DEBUG_KMS("Unexpected AUX channel for port B\n"); |
1027 | DRM_DEBUG_KMS("Unexpected AUX channel for port B\n"); |
1028 | else if (aux_channel == DP_AUX_C && port != PORT_C) |
1028 | else if (aux_channel == DP_AUX_C && port != PORT_C) |
1029 | DRM_DEBUG_KMS("Unexpected AUX channel for port C\n"); |
1029 | DRM_DEBUG_KMS("Unexpected AUX channel for port C\n"); |
1030 | else if (aux_channel == DP_AUX_D && port != PORT_D) |
1030 | else if (aux_channel == DP_AUX_D && port != PORT_D) |
1031 | DRM_DEBUG_KMS("Unexpected AUX channel for port D\n"); |
1031 | DRM_DEBUG_KMS("Unexpected AUX channel for port D\n"); |
1032 | } |
1032 | } |
1033 | 1033 | ||
1034 | if (bdb->version >= 158) { |
1034 | if (bdb->version >= 158) { |
1035 | /* The VBT HDMI level shift values match the table we have. */ |
1035 | /* The VBT HDMI level shift values match the table we have. */ |
1036 | hdmi_level_shift = child->raw[7] & 0xF; |
1036 | hdmi_level_shift = child->raw[7] & 0xF; |
1037 | DRM_DEBUG_KMS("VBT HDMI level shift for port %c: %d\n", |
1037 | DRM_DEBUG_KMS("VBT HDMI level shift for port %c: %d\n", |
1038 | port_name(port), |
1038 | port_name(port), |
1039 | hdmi_level_shift); |
1039 | hdmi_level_shift); |
1040 | info->hdmi_level_shift = hdmi_level_shift; |
1040 | info->hdmi_level_shift = hdmi_level_shift; |
1041 | } |
1041 | } |
1042 | 1042 | ||
1043 | /* Parse the I_boost config for SKL and above */ |
1043 | /* Parse the I_boost config for SKL and above */ |
1044 | if (bdb->version >= 196 && (child->common.flags_1 & IBOOST_ENABLE)) { |
1044 | if (bdb->version >= 196 && (child->common.flags_1 & IBOOST_ENABLE)) { |
1045 | info->dp_boost_level = translate_iboost(child->common.iboost_level & 0xF); |
1045 | info->dp_boost_level = translate_iboost(child->common.iboost_level & 0xF); |
1046 | DRM_DEBUG_KMS("VBT (e)DP boost level for port %c: %d\n", |
1046 | DRM_DEBUG_KMS("VBT (e)DP boost level for port %c: %d\n", |
1047 | port_name(port), info->dp_boost_level); |
1047 | port_name(port), info->dp_boost_level); |
1048 | info->hdmi_boost_level = translate_iboost(child->common.iboost_level >> 4); |
1048 | info->hdmi_boost_level = translate_iboost(child->common.iboost_level >> 4); |
1049 | DRM_DEBUG_KMS("VBT HDMI boost level for port %c: %d\n", |
1049 | DRM_DEBUG_KMS("VBT HDMI boost level for port %c: %d\n", |
1050 | port_name(port), info->hdmi_boost_level); |
1050 | port_name(port), info->hdmi_boost_level); |
1051 | } |
1051 | } |
1052 | } |
1052 | } |
1053 | 1053 | ||
1054 | static void parse_ddi_ports(struct drm_i915_private *dev_priv, |
1054 | static void parse_ddi_ports(struct drm_i915_private *dev_priv, |
1055 | const struct bdb_header *bdb) |
1055 | const struct bdb_header *bdb) |
1056 | { |
1056 | { |
1057 | struct drm_device *dev = dev_priv->dev; |
1057 | struct drm_device *dev = dev_priv->dev; |
1058 | enum port port; |
1058 | enum port port; |
1059 | 1059 | ||
1060 | if (!HAS_DDI(dev)) |
1060 | if (!HAS_DDI(dev)) |
1061 | return; |
1061 | return; |
1062 | 1062 | ||
1063 | if (!dev_priv->vbt.child_dev_num) |
1063 | if (!dev_priv->vbt.child_dev_num) |
1064 | return; |
1064 | return; |
1065 | 1065 | ||
1066 | if (bdb->version < 155) |
1066 | if (bdb->version < 155) |
1067 | return; |
1067 | return; |
1068 | 1068 | ||
1069 | for (port = PORT_A; port < I915_MAX_PORTS; port++) |
1069 | for (port = PORT_A; port < I915_MAX_PORTS; port++) |
1070 | parse_ddi_port(dev_priv, port, bdb); |
1070 | parse_ddi_port(dev_priv, port, bdb); |
1071 | } |
1071 | } |
1072 | 1072 | ||
1073 | static void |
1073 | static void |
1074 | parse_device_mapping(struct drm_i915_private *dev_priv, |
1074 | parse_device_mapping(struct drm_i915_private *dev_priv, |
1075 | const struct bdb_header *bdb) |
1075 | const struct bdb_header *bdb) |
1076 | { |
1076 | { |
1077 | const struct bdb_general_definitions *p_defs; |
1077 | const struct bdb_general_definitions *p_defs; |
1078 | const union child_device_config *p_child; |
1078 | const union child_device_config *p_child; |
1079 | union child_device_config *child_dev_ptr; |
1079 | union child_device_config *child_dev_ptr; |
1080 | int i, child_device_num, count; |
1080 | int i, child_device_num, count; |
1081 | u8 expected_size; |
1081 | u8 expected_size; |
1082 | u16 block_size; |
1082 | u16 block_size; |
1083 | 1083 | ||
1084 | p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
1084 | p_defs = find_section(bdb, BDB_GENERAL_DEFINITIONS); |
1085 | if (!p_defs) { |
1085 | if (!p_defs) { |
1086 | DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n"); |
1086 | DRM_DEBUG_KMS("No general definition block is found, no devices defined.\n"); |
1087 | return; |
1087 | return; |
1088 | } |
1088 | } |
1089 | if (bdb->version < 195) { |
1089 | if (bdb->version < 195) { |
1090 | expected_size = sizeof(struct old_child_dev_config); |
1090 | expected_size = sizeof(struct old_child_dev_config); |
1091 | } else if (bdb->version == 195) { |
1091 | } else if (bdb->version == 195) { |
1092 | expected_size = 37; |
1092 | expected_size = 37; |
1093 | } else if (bdb->version <= 197) { |
1093 | } else if (bdb->version <= 197) { |
1094 | expected_size = 38; |
1094 | expected_size = 38; |
1095 | } else { |
1095 | } else { |
1096 | expected_size = 38; |
1096 | expected_size = 38; |
1097 | BUILD_BUG_ON(sizeof(*p_child) < 38); |
1097 | BUILD_BUG_ON(sizeof(*p_child) < 38); |
1098 | DRM_DEBUG_DRIVER("Expected child device config size for VBT version %u not known; assuming %u\n", |
1098 | DRM_DEBUG_DRIVER("Expected child device config size for VBT version %u not known; assuming %u\n", |
1099 | bdb->version, expected_size); |
1099 | bdb->version, expected_size); |
1100 | } |
1100 | } |
1101 | 1101 | ||
1102 | /* The legacy sized child device config is the minimum we need. */ |
1102 | /* The legacy sized child device config is the minimum we need. */ |
1103 | if (p_defs->child_dev_size < sizeof(struct old_child_dev_config)) { |
1103 | if (p_defs->child_dev_size < sizeof(struct old_child_dev_config)) { |
1104 | DRM_ERROR("Child device config size %u is too small.\n", |
1104 | DRM_ERROR("Child device config size %u is too small.\n", |
1105 | p_defs->child_dev_size); |
1105 | p_defs->child_dev_size); |
1106 | return; |
1106 | return; |
1107 | } |
1107 | } |
1108 | 1108 | ||
1109 | /* Flag an error for unexpected size, but continue anyway. */ |
1109 | /* Flag an error for unexpected size, but continue anyway. */ |
1110 | if (p_defs->child_dev_size != expected_size) |
1110 | if (p_defs->child_dev_size != expected_size) |
1111 | DRM_ERROR("Unexpected child device config size %u (expected %u for VBT version %u)\n", |
1111 | DRM_ERROR("Unexpected child device config size %u (expected %u for VBT version %u)\n", |
1112 | p_defs->child_dev_size, expected_size, bdb->version); |
1112 | p_defs->child_dev_size, expected_size, bdb->version); |
1113 | 1113 | ||
1114 | /* get the block size of general definitions */ |
1114 | /* get the block size of general definitions */ |
1115 | block_size = get_blocksize(p_defs); |
1115 | block_size = get_blocksize(p_defs); |
1116 | /* get the number of child device */ |
1116 | /* get the number of child device */ |
1117 | child_device_num = (block_size - sizeof(*p_defs)) / |
1117 | child_device_num = (block_size - sizeof(*p_defs)) / |
1118 | p_defs->child_dev_size; |
1118 | p_defs->child_dev_size; |
1119 | count = 0; |
1119 | count = 0; |
1120 | /* get the number of child device that is present */ |
1120 | /* get the number of child device that is present */ |
1121 | for (i = 0; i < child_device_num; i++) { |
1121 | for (i = 0; i < child_device_num; i++) { |
1122 | p_child = child_device_ptr(p_defs, i); |
1122 | p_child = child_device_ptr(p_defs, i); |
1123 | if (!p_child->common.device_type) { |
1123 | if (!p_child->common.device_type) { |
1124 | /* skip the device block if device type is invalid */ |
1124 | /* skip the device block if device type is invalid */ |
1125 | continue; |
1125 | continue; |
1126 | } |
1126 | } |
1127 | count++; |
1127 | count++; |
1128 | } |
1128 | } |
1129 | if (!count) { |
1129 | if (!count) { |
1130 | DRM_DEBUG_KMS("no child dev is parsed from VBT\n"); |
1130 | DRM_DEBUG_KMS("no child dev is parsed from VBT\n"); |
1131 | return; |
1131 | return; |
1132 | } |
1132 | } |
1133 | dev_priv->vbt.child_dev = kcalloc(count, sizeof(*p_child), GFP_KERNEL); |
1133 | dev_priv->vbt.child_dev = kcalloc(count, sizeof(*p_child), GFP_KERNEL); |
1134 | if (!dev_priv->vbt.child_dev) { |
1134 | if (!dev_priv->vbt.child_dev) { |
1135 | DRM_DEBUG_KMS("No memory space for child device\n"); |
1135 | DRM_DEBUG_KMS("No memory space for child device\n"); |
1136 | return; |
1136 | return; |
1137 | } |
1137 | } |
1138 | 1138 | ||
1139 | dev_priv->vbt.child_dev_num = count; |
1139 | dev_priv->vbt.child_dev_num = count; |
1140 | count = 0; |
1140 | count = 0; |
1141 | for (i = 0; i < child_device_num; i++) { |
1141 | for (i = 0; i < child_device_num; i++) { |
1142 | p_child = child_device_ptr(p_defs, i); |
1142 | p_child = child_device_ptr(p_defs, i); |
1143 | if (!p_child->common.device_type) { |
1143 | if (!p_child->common.device_type) { |
1144 | /* skip the device block if device type is invalid */ |
1144 | /* skip the device block if device type is invalid */ |
1145 | continue; |
1145 | continue; |
1146 | } |
1146 | } |
1147 | 1147 | ||
1148 | if (p_child->common.dvo_port >= DVO_PORT_MIPIA |
1148 | if (p_child->common.dvo_port >= DVO_PORT_MIPIA |
1149 | && p_child->common.dvo_port <= DVO_PORT_MIPID |
1149 | && p_child->common.dvo_port <= DVO_PORT_MIPID |
1150 | &&p_child->common.device_type & DEVICE_TYPE_MIPI_OUTPUT) { |
1150 | &&p_child->common.device_type & DEVICE_TYPE_MIPI_OUTPUT) { |
1151 | DRM_DEBUG_KMS("Found MIPI as LFP\n"); |
1151 | DRM_DEBUG_KMS("Found MIPI as LFP\n"); |
1152 | dev_priv->vbt.has_mipi = 1; |
1152 | dev_priv->vbt.has_mipi = 1; |
1153 | dev_priv->vbt.dsi.port = p_child->common.dvo_port; |
1153 | dev_priv->vbt.dsi.port = p_child->common.dvo_port; |
1154 | } |
1154 | } |
1155 | 1155 | ||
1156 | child_dev_ptr = dev_priv->vbt.child_dev + count; |
1156 | child_dev_ptr = dev_priv->vbt.child_dev + count; |
1157 | count++; |
1157 | count++; |
1158 | 1158 | ||
1159 | /* |
1159 | /* |
1160 | * Copy as much as we know (sizeof) and is available |
1160 | * Copy as much as we know (sizeof) and is available |
1161 | * (child_dev_size) of the child device. Accessing the data must |
1161 | * (child_dev_size) of the child device. Accessing the data must |
1162 | * depend on VBT version. |
1162 | * depend on VBT version. |
1163 | */ |
1163 | */ |
1164 | memcpy(child_dev_ptr, p_child, |
1164 | memcpy(child_dev_ptr, p_child, |
1165 | min_t(size_t, p_defs->child_dev_size, sizeof(*p_child))); |
1165 | min_t(size_t, p_defs->child_dev_size, sizeof(*p_child))); |
1166 | } |
1166 | } |
1167 | return; |
1167 | return; |
1168 | } |
1168 | } |
1169 | 1169 | ||
1170 | static void |
1170 | static void |
1171 | init_vbt_defaults(struct drm_i915_private *dev_priv) |
1171 | init_vbt_defaults(struct drm_i915_private *dev_priv) |
1172 | { |
1172 | { |
1173 | struct drm_device *dev = dev_priv->dev; |
1173 | struct drm_device *dev = dev_priv->dev; |
1174 | enum port port; |
1174 | enum port port; |
1175 | 1175 | ||
1176 | dev_priv->vbt.crt_ddc_pin = GMBUS_PIN_VGADDC; |
1176 | dev_priv->vbt.crt_ddc_pin = GMBUS_PIN_VGADDC; |
1177 | 1177 | ||
1178 | /* Default to having backlight */ |
1178 | /* Default to having backlight */ |
1179 | dev_priv->vbt.backlight.present = true; |
1179 | dev_priv->vbt.backlight.present = true; |
1180 | 1180 | ||
1181 | /* LFP panel data */ |
1181 | /* LFP panel data */ |
1182 | dev_priv->vbt.lvds_dither = 1; |
1182 | dev_priv->vbt.lvds_dither = 1; |
1183 | dev_priv->vbt.lvds_vbt = 0; |
1183 | dev_priv->vbt.lvds_vbt = 0; |
1184 | 1184 | ||
1185 | /* SDVO panel data */ |
1185 | /* SDVO panel data */ |
1186 | dev_priv->vbt.sdvo_lvds_vbt_mode = NULL; |
1186 | dev_priv->vbt.sdvo_lvds_vbt_mode = NULL; |
1187 | 1187 | ||
1188 | /* general features */ |
1188 | /* general features */ |
1189 | dev_priv->vbt.int_tv_support = 1; |
1189 | dev_priv->vbt.int_tv_support = 1; |
1190 | dev_priv->vbt.int_crt_support = 1; |
1190 | dev_priv->vbt.int_crt_support = 1; |
1191 | 1191 | ||
1192 | /* Default to using SSC */ |
1192 | /* Default to using SSC */ |
1193 | dev_priv->vbt.lvds_use_ssc = 1; |
1193 | dev_priv->vbt.lvds_use_ssc = 1; |
1194 | /* |
1194 | /* |
1195 | * Core/SandyBridge/IvyBridge use alternative (120MHz) reference |
1195 | * Core/SandyBridge/IvyBridge use alternative (120MHz) reference |
1196 | * clock for LVDS. |
1196 | * clock for LVDS. |
1197 | */ |
1197 | */ |
1198 | dev_priv->vbt.lvds_ssc_freq = intel_bios_ssc_frequency(dev, |
1198 | dev_priv->vbt.lvds_ssc_freq = intel_bios_ssc_frequency(dev, |
1199 | !HAS_PCH_SPLIT(dev)); |
1199 | !HAS_PCH_SPLIT(dev)); |
1200 | DRM_DEBUG_KMS("Set default to SSC at %d kHz\n", dev_priv->vbt.lvds_ssc_freq); |
1200 | DRM_DEBUG_KMS("Set default to SSC at %d kHz\n", dev_priv->vbt.lvds_ssc_freq); |
1201 | 1201 | ||
1202 | for (port = PORT_A; port < I915_MAX_PORTS; port++) { |
1202 | for (port = PORT_A; port < I915_MAX_PORTS; port++) { |
1203 | struct ddi_vbt_port_info *info = |
1203 | struct ddi_vbt_port_info *info = |
1204 | &dev_priv->vbt.ddi_port_info[port]; |
1204 | &dev_priv->vbt.ddi_port_info[port]; |
1205 | 1205 | ||
1206 | info->hdmi_level_shift = HDMI_LEVEL_SHIFT_UNKNOWN; |
1206 | info->hdmi_level_shift = HDMI_LEVEL_SHIFT_UNKNOWN; |
1207 | 1207 | ||
1208 | info->supports_dvi = (port != PORT_A && port != PORT_E); |
1208 | info->supports_dvi = (port != PORT_A && port != PORT_E); |
1209 | info->supports_hdmi = info->supports_dvi; |
1209 | info->supports_hdmi = info->supports_dvi; |
1210 | info->supports_dp = (port != PORT_E); |
1210 | info->supports_dp = (port != PORT_E); |
1211 | } |
1211 | } |
1212 | } |
1212 | } |
1213 | 1213 | ||
1214 | static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id) |
1214 | static int intel_no_opregion_vbt_callback(const struct dmi_system_id *id) |
1215 | { |
1215 | { |
1216 | DRM_DEBUG_KMS("Falling back to manually reading VBT from " |
1216 | DRM_DEBUG_KMS("Falling back to manually reading VBT from " |
1217 | "VBIOS ROM for %s\n", |
1217 | "VBIOS ROM for %s\n", |
1218 | id->ident); |
1218 | id->ident); |
1219 | return 1; |
1219 | return 1; |
1220 | } |
1220 | } |
1221 | 1221 | ||
1222 | static const struct dmi_system_id intel_no_opregion_vbt[] = { |
1222 | static const struct dmi_system_id intel_no_opregion_vbt[] = { |
1223 | { |
1223 | { |
1224 | .callback = intel_no_opregion_vbt_callback, |
1224 | .callback = intel_no_opregion_vbt_callback, |
1225 | .ident = "ThinkCentre A57", |
1225 | .ident = "ThinkCentre A57", |
1226 | .matches = { |
1226 | .matches = { |
1227 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
1227 | DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), |
1228 | DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"), |
1228 | DMI_MATCH(DMI_PRODUCT_NAME, "97027RG"), |
1229 | }, |
1229 | }, |
1230 | }, |
1230 | }, |
1231 | { } |
1231 | { } |
1232 | }; |
1232 | }; |
1233 | 1233 | ||
1234 | static const struct bdb_header *validate_vbt(const void *base, |
1234 | static const struct bdb_header *validate_vbt(const void *base, |
1235 | size_t size, |
1235 | size_t size, |
1236 | const void *_vbt, |
1236 | const void *_vbt, |
1237 | const char *source) |
1237 | const char *source) |
1238 | { |
1238 | { |
1239 | size_t offset = _vbt - base; |
1239 | size_t offset = _vbt - base; |
1240 | const struct vbt_header *vbt = _vbt; |
1240 | const struct vbt_header *vbt = _vbt; |
1241 | const struct bdb_header *bdb; |
1241 | const struct bdb_header *bdb; |
1242 | 1242 | ||
1243 | if (offset + sizeof(struct vbt_header) > size) { |
1243 | if (offset + sizeof(struct vbt_header) > size) { |
1244 | DRM_DEBUG_DRIVER("VBT header incomplete\n"); |
1244 | DRM_DEBUG_DRIVER("VBT header incomplete\n"); |
1245 | return NULL; |
1245 | return NULL; |
1246 | } |
1246 | } |
1247 | 1247 | ||
1248 | if (memcmp(vbt->signature, "$VBT", 4)) { |
1248 | if (memcmp(vbt->signature, "$VBT", 4)) { |
1249 | DRM_DEBUG_DRIVER("VBT invalid signature\n"); |
1249 | DRM_DEBUG_DRIVER("VBT invalid signature\n"); |
1250 | return NULL; |
1250 | return NULL; |
1251 | } |
1251 | } |
1252 | 1252 | ||
1253 | offset += vbt->bdb_offset; |
1253 | offset += vbt->bdb_offset; |
1254 | if (offset + sizeof(struct bdb_header) > size) { |
1254 | if (offset + sizeof(struct bdb_header) > size) { |
1255 | DRM_DEBUG_DRIVER("BDB header incomplete\n"); |
1255 | DRM_DEBUG_DRIVER("BDB header incomplete\n"); |
1256 | return NULL; |
1256 | return NULL; |
1257 | } |
1257 | } |
1258 | 1258 | ||
1259 | bdb = base + offset; |
1259 | bdb = base + offset; |
1260 | if (offset + bdb->bdb_size > size) { |
1260 | if (offset + bdb->bdb_size > size) { |
1261 | DRM_DEBUG_DRIVER("BDB incomplete\n"); |
1261 | DRM_DEBUG_DRIVER("BDB incomplete\n"); |
1262 | return NULL; |
1262 | return NULL; |
1263 | } |
1263 | } |
1264 | 1264 | ||
1265 | DRM_DEBUG_KMS("Using VBT from %s: %20s\n", |
1265 | DRM_DEBUG_KMS("Using VBT from %s: %20s\n", |
1266 | source, vbt->signature); |
1266 | source, vbt->signature); |
1267 | return bdb; |
1267 | return bdb; |
1268 | } |
1268 | } |
1269 | 1269 | ||
1270 | static const struct bdb_header *find_vbt(void __iomem *bios, size_t size) |
1270 | static const struct bdb_header *find_vbt(void __iomem *bios, size_t size) |
1271 | { |
1271 | { |
1272 | const struct bdb_header *bdb = NULL; |
1272 | const struct bdb_header *bdb = NULL; |
1273 | size_t i; |
1273 | size_t i; |
1274 | 1274 | ||
1275 | /* Scour memory looking for the VBT signature. */ |
1275 | /* Scour memory looking for the VBT signature. */ |
1276 | for (i = 0; i + 4 < size; i++) { |
1276 | for (i = 0; i + 4 < size; i++) { |
1277 | if (ioread32(bios + i) == *((const u32 *) "$VBT")) { |
1277 | if (ioread32(bios + i) == *((const u32 *) "$VBT")) { |
1278 | /* |
1278 | /* |
1279 | * This is the one place where we explicitly discard the |
1279 | * This is the one place where we explicitly discard the |
1280 | * address space (__iomem) of the BIOS/VBT. From now on |
1280 | * address space (__iomem) of the BIOS/VBT. From now on |
1281 | * everything is based on 'base', and treated as regular |
1281 | * everything is based on 'base', and treated as regular |
1282 | * memory. |
1282 | * memory. |
1283 | */ |
1283 | */ |
1284 | void *_bios = (void __force *) bios; |
1284 | void *_bios = (void __force *) bios; |
1285 | 1285 | ||
1286 | bdb = validate_vbt(_bios, size, _bios + i, "PCI ROM"); |
1286 | bdb = validate_vbt(_bios, size, _bios + i, "PCI ROM"); |
1287 | break; |
1287 | break; |
1288 | } |
1288 | } |
1289 | } |
1289 | } |
1290 | 1290 | ||
1291 | return bdb; |
1291 | return bdb; |
1292 | } |
1292 | } |
1293 | 1293 | ||
1294 | /** |
1294 | /** |
1295 | * intel_parse_bios - find VBT and initialize settings from the BIOS |
1295 | * intel_parse_bios - find VBT and initialize settings from the BIOS |
1296 | * @dev: DRM device |
1296 | * @dev: DRM device |
1297 | * |
1297 | * |
1298 | * Loads the Video BIOS and checks that the VBT exists. Sets scratch registers |
1298 | * Loads the Video BIOS and checks that the VBT exists. Sets scratch registers |
1299 | * to appropriate values. |
1299 | * to appropriate values. |
1300 | * |
1300 | * |
1301 | * Returns 0 on success, nonzero on failure. |
1301 | * Returns 0 on success, nonzero on failure. |
1302 | */ |
1302 | */ |
1303 | int |
1303 | int |
1304 | intel_parse_bios(struct drm_device *dev) |
1304 | intel_parse_bios(struct drm_device *dev) |
1305 | { |
1305 | { |
1306 | struct drm_i915_private *dev_priv = dev->dev_private; |
1306 | struct drm_i915_private *dev_priv = dev->dev_private; |
1307 | struct pci_dev *pdev = dev->pdev; |
1307 | struct pci_dev *pdev = dev->pdev; |
1308 | const struct bdb_header *bdb = NULL; |
1308 | const struct bdb_header *bdb = NULL; |
1309 | u8 __iomem *bios = NULL; |
1309 | u8 __iomem *bios = NULL; |
1310 | 1310 | ||
1311 | if (HAS_PCH_NOP(dev)) |
1311 | if (HAS_PCH_NOP(dev)) |
1312 | return -ENODEV; |
1312 | return -ENODEV; |
1313 | 1313 | ||
1314 | init_vbt_defaults(dev_priv); |
1314 | init_vbt_defaults(dev_priv); |
1315 | 1315 | ||
1316 | /* XXX Should this validation be moved to intel_opregion.c? */ |
1316 | /* XXX Should this validation be moved to intel_opregion.c? */ |
1317 | if (!dmi_check_system(intel_no_opregion_vbt) && dev_priv->opregion.vbt) |
1317 | if (!dmi_check_system(intel_no_opregion_vbt) && dev_priv->opregion.vbt) |
1318 | bdb = validate_vbt(dev_priv->opregion.header, OPREGION_SIZE, |
1318 | bdb = validate_vbt(dev_priv->opregion.header, OPREGION_SIZE, |
1319 | dev_priv->opregion.vbt, "OpRegion"); |
1319 | dev_priv->opregion.vbt, "OpRegion"); |
1320 | 1320 | ||
1321 | if (bdb == NULL) { |
1321 | if (bdb == NULL) { |
1322 | size_t size; |
1322 | size_t size; |
1323 | 1323 | ||
1324 | bios = pci_map_rom(pdev, &size); |
1324 | bios = pci_map_rom(pdev, &size); |
1325 | if (!bios) |
1325 | if (!bios) |
1326 | return -1; |
1326 | return -1; |
1327 | 1327 | ||
1328 | bdb = find_vbt(bios, size); |
1328 | bdb = find_vbt(bios, size); |
1329 | if (!bdb) { |
1329 | if (!bdb) { |
1330 | pci_unmap_rom(pdev, bios); |
1330 | pci_unmap_rom(pdev, bios); |
1331 | return -1; |
1331 | return -1; |
1332 | } |
1332 | } |
1333 | } |
1333 | } |
1334 | 1334 | ||
1335 | /* Grab useful general definitions */ |
1335 | /* Grab useful general definitions */ |
1336 | parse_general_features(dev_priv, bdb); |
1336 | parse_general_features(dev_priv, bdb); |
1337 | parse_general_definitions(dev_priv, bdb); |
1337 | parse_general_definitions(dev_priv, bdb); |
1338 | parse_lfp_panel_data(dev_priv, bdb); |
1338 | parse_lfp_panel_data(dev_priv, bdb); |
1339 | parse_lfp_backlight(dev_priv, bdb); |
1339 | parse_lfp_backlight(dev_priv, bdb); |
1340 | parse_sdvo_panel_data(dev_priv, bdb); |
1340 | parse_sdvo_panel_data(dev_priv, bdb); |
1341 | parse_sdvo_device_mapping(dev_priv, bdb); |
1341 | parse_sdvo_device_mapping(dev_priv, bdb); |
1342 | parse_device_mapping(dev_priv, bdb); |
1342 | parse_device_mapping(dev_priv, bdb); |
1343 | parse_driver_features(dev_priv, bdb); |
1343 | parse_driver_features(dev_priv, bdb); |
1344 | parse_edp(dev_priv, bdb); |
1344 | parse_edp(dev_priv, bdb); |
1345 | parse_psr(dev_priv, bdb); |
1345 | parse_psr(dev_priv, bdb); |
1346 | parse_mipi(dev_priv, bdb); |
1346 | parse_mipi(dev_priv, bdb); |
1347 | parse_ddi_ports(dev_priv, bdb); |
1347 | parse_ddi_ports(dev_priv, bdb); |
1348 | 1348 | ||
1349 | if (bios) |
1349 | if (bios) |
1350 | pci_unmap_rom(pdev, bios); |
1350 | pci_unmap_rom(pdev, bios); |
1351 | 1351 | ||
1352 | return 0; |
1352 | return 0; |
1353 | }>>=>>>>>=>>>>>>>>>>>>>>>>><>><>><>><>><>> |
1353 | } |
- | 1354 | ||
- | 1355 | /** |
|
- | 1356 | * intel_bios_is_port_present - is the specified digital port present |
|
- | 1357 | * @dev_priv: i915 device instance |
|
- | 1358 | * @port: port to check |
|
- | 1359 | * |
|
- | 1360 | * Return true if the device in %port is present. |
|
- | 1361 | */ |
|
- | 1362 | bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port port) |
|
- | 1363 | { |
|
- | 1364 | static const struct { |
|
- | 1365 | u16 dp, hdmi; |
|
- | 1366 | } port_mapping[] = { |
|
- | 1367 | [PORT_B] = { DVO_PORT_DPB, DVO_PORT_HDMIB, }, |
|
- | 1368 | [PORT_C] = { DVO_PORT_DPC, DVO_PORT_HDMIC, }, |
|
- | 1369 | [PORT_D] = { DVO_PORT_DPD, DVO_PORT_HDMID, }, |
|
- | 1370 | [PORT_E] = { DVO_PORT_DPE, DVO_PORT_HDMIE, }, |
|
- | 1371 | }; |
|
- | 1372 | int i; |
|
- | 1373 | ||
- | 1374 | /* FIXME maybe deal with port A as well? */ |
|
- | 1375 | if (WARN_ON(port == PORT_A) || port >= ARRAY_SIZE(port_mapping)) |
|
- | 1376 | return false; |
|
- | 1377 | ||
- | 1378 | if (!dev_priv->vbt.child_dev_num) |
|
- | 1379 | return false; |
|
- | 1380 | ||
- | 1381 | for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { |
|
- | 1382 | const union child_device_config *p_child = |
|
- | 1383 | &dev_priv->vbt.child_dev[i]; |
|
- | 1384 | if ((p_child->common.dvo_port == port_mapping[port].dp || |
|
- | 1385 | p_child->common.dvo_port == port_mapping[port].hdmi) && |
|
- | 1386 | (p_child->common.device_type & (DEVICE_TYPE_TMDS_DVI_SIGNALING | |
|
- | 1387 | DEVICE_TYPE_DISPLAYPORT_OUTPUT))) |
|
- | 1388 | return true; |
|
- | 1389 | } |
|
- | 1390 | ||
- | 1391 | return false; |
|
- | 1392 | }>>>=>>>>>=>>>>>>>>>>>>>>>>><>><>><>><>><>> |