1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
|
/**************************************************************************
* Copyright (c) 2011, Intel Corporation.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
**************************************************************************/
/* TODO
* - Split functions by vbt type
* - Make them all take drm_device
* - Check ioremap failures
*/
#include <drm/drmP.h>
#include <drm/drm.h>
#include "gma_drm.h"
#include "psb_drv.h"
#include "mid_bios.h"
static void mid_get_fuse_settings(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = dev->dev_private;
struct pci_dev *pci_root = pci_get_bus_and_slot(0, 0);
uint32_t fuse_value = 0;
uint32_t fuse_value_tmp = 0;
#define FB_REG06 0xD0810600
#define FB_MIPI_DISABLE (1 << 11)
#define FB_REG09 0xD0810900
#define FB_REG09 0xD0810900
#define FB_SKU_MASK 0x7000
#define FB_SKU_SHIFT 12
#define FB_SKU_100 0
#define FB_SKU_100L 1
#define FB_SKU_83 2
if (pci_root == NULL) {
WARN_ON(1);
return;
}
pci_write_config_dword(pci_root, 0xD0, FB_REG06);
pci_read_config_dword(pci_root, 0xD4, &fuse_value);
/* FB_MIPI_DISABLE doesn't mean LVDS on with Medfield */
if (IS_MRST(dev))
dev_priv->iLVDS_enable = fuse_value & FB_MIPI_DISABLE;
DRM_INFO("internal display is %s\n",
dev_priv->iLVDS_enable ? "LVDS display" : "MIPI display");
/* Prevent runtime suspend at start*/
if (dev_priv->iLVDS_enable) {
dev_priv->is_lvds_on = true;
dev_priv->is_mipi_on = false;
} else {
dev_priv->is_mipi_on = true;
dev_priv->is_lvds_on = false;
}
dev_priv->video_device_fuse = fuse_value;
pci_write_config_dword(pci_root, 0xD0, FB_REG09);
pci_read_config_dword(pci_root, 0xD4, &fuse_value);
dev_dbg(dev->dev, "SKU values is 0x%x.\n", fuse_value);
fuse_value_tmp = (fuse_value & FB_SKU_MASK) >> FB_SKU_SHIFT;
dev_priv->fuse_reg_value = fuse_value;
switch (fuse_value_tmp) {
case FB_SKU_100:
dev_priv->core_freq = 200;
break;
case FB_SKU_100L:
dev_priv->core_freq = 100;
break;
case FB_SKU_83:
dev_priv->core_freq = 166;
break;
default:
dev_warn(dev->dev, "Invalid SKU values, SKU value = 0x%08x\n",
fuse_value_tmp);
dev_priv->core_freq = 0;
}
dev_dbg(dev->dev, "LNC core clk is %dMHz.\n", dev_priv->core_freq);
pci_dev_put(pci_root);
}
/*
* Get the revison ID, B0:D2:F0;0x08
*/
static void mid_get_pci_revID(struct drm_psb_private *dev_priv)
{
uint32_t platform_rev_id = 0;
struct pci_dev *pci_gfx_root = pci_get_bus_and_slot(0, PCI_DEVFN(2, 0));
if (pci_gfx_root == NULL) {
WARN_ON(1);
return;
}
pci_read_config_dword(pci_gfx_root, 0x08, &platform_rev_id);
dev_priv->platform_rev_id = (uint8_t) platform_rev_id;
pci_dev_put(pci_gfx_root);
dev_dbg(dev_priv->dev->dev, "platform_rev_id is %x\n",
dev_priv->platform_rev_id);
}
struct vbt_header {
u32 signature;
u8 revision;
} __packed;
/* The same for r0 and r1 */
struct vbt_r0 {
struct vbt_header vbt_header;
u8 size;
u8 checksum;
} __packed;
struct vbt_r10 {
struct vbt_header vbt_header;
u8 checksum;
u16 size;
u8 panel_count;
u8 primary_panel_idx;
u8 secondary_panel_idx;
u8 __reserved[5];
} __packed;
static int read_vbt_r0(u32 addr, struct vbt_r0 *vbt)
{
void __iomem *vbt_virtual;
vbt_virtual = ioremap(addr, sizeof(*vbt));
if (vbt_virtual == NULL)
return -1;
memcpy_fromio(vbt, vbt_virtual, sizeof(*vbt));
iounmap(vbt_virtual);
return 0;
}
static int read_vbt_r10(u32 addr, struct vbt_r10 *vbt)
{
void __iomem *vbt_virtual;
vbt_virtual = ioremap(addr, sizeof(*vbt));
if (!vbt_virtual)
return -1;
memcpy_fromio(vbt, vbt_virtual, sizeof(*vbt));
iounmap(vbt_virtual);
return 0;
}
static int mid_get_vbt_data_r0(struct drm_psb_private *dev_priv, u32 addr)
{
struct vbt_r0 vbt;
void __iomem *gct_virtual;
struct gct_r0 gct;
u8 bpi;
if (read_vbt_r0(addr, &vbt))
return -1;
gct_virtual = ioremap(addr + sizeof(vbt), vbt.size - sizeof(vbt));
if (!gct_virtual)
return -1;
memcpy_fromio(&gct, gct_virtual, sizeof(gct));
iounmap(gct_virtual);
bpi = gct.PD.BootPanelIndex;
dev_priv->gct_data.bpi = bpi;
dev_priv->gct_data.pt = gct.PD.PanelType;
dev_priv->gct_data.DTD = gct.panel[bpi].DTD;
dev_priv->gct_data.Panel_Port_Control =
gct.panel[bpi].Panel_Port_Control;
dev_priv->gct_data.Panel_MIPI_Display_Descriptor =
gct.panel[bpi].Panel_MIPI_Display_Descriptor;
return 0;
}
static int mid_get_vbt_data_r1(struct drm_psb_private *dev_priv, u32 addr)
{
struct vbt_r0 vbt;
void __iomem *gct_virtual;
struct gct_r1 gct;
u8 bpi;
if (read_vbt_r0(addr, &vbt))
return -1;
gct_virtual = ioremap(addr + sizeof(vbt), vbt.size - sizeof(vbt));
if (!gct_virtual)
return -1;
memcpy_fromio(&gct, gct_virtual, sizeof(gct));
iounmap(gct_virtual);
bpi = gct.PD.BootPanelIndex;
dev_priv->gct_data.bpi = bpi;
dev_priv->gct_data.pt = gct.PD.PanelType;
dev_priv->gct_data.DTD = gct.panel[bpi].DTD;
dev_priv->gct_data.Panel_Port_Control =
gct.panel[bpi].Panel_Port_Control;
dev_priv->gct_data.Panel_MIPI_Display_Descriptor =
gct.panel[bpi].Panel_MIPI_Display_Descriptor;
return 0;
}
static int mid_get_vbt_data_r10(struct drm_psb_private *dev_priv, u32 addr)
{
struct vbt_r10 vbt;
void __iomem *gct_virtual;
struct gct_r10 *gct;
struct oaktrail_timing_info *dp_ti = &dev_priv->gct_data.DTD;
struct gct_r10_timing_info *ti;
int ret = -1;
if (read_vbt_r10(addr, &vbt))
return -1;
gct = kmalloc(sizeof(*gct) * vbt.panel_count, GFP_KERNEL);
if (!gct)
return -1;
gct_virtual = ioremap(addr + sizeof(vbt),
sizeof(*gct) * vbt.panel_count);
if (!gct_virtual)
goto out;
memcpy_fromio(gct, gct_virtual, sizeof(*gct));
iounmap(gct_virtual);
dev_priv->gct_data.bpi = vbt.primary_panel_idx;
dev_priv->gct_data.Panel_MIPI_Display_Descriptor =
gct[vbt.primary_panel_idx].Panel_MIPI_Display_Descriptor;
ti = &gct[vbt.primary_panel_idx].DTD;
dp_ti->pixel_clock = ti->pixel_clock;
dp_ti->hactive_hi = ti->hactive_hi;
dp_ti->hactive_lo = ti->hactive_lo;
dp_ti->hblank_hi = ti->hblank_hi;
dp_ti->hblank_lo = ti->hblank_lo;
dp_ti->hsync_offset_hi = ti->hsync_offset_hi;
dp_ti->hsync_offset_lo = ti->hsync_offset_lo;
dp_ti->hsync_pulse_width_hi = ti->hsync_pulse_width_hi;
dp_ti->hsync_pulse_width_lo = ti->hsync_pulse_width_lo;
dp_ti->vactive_hi = ti->vactive_hi;
dp_ti->vactive_lo = ti->vactive_lo;
dp_ti->vblank_hi = ti->vblank_hi;
dp_ti->vblank_lo = ti->vblank_lo;
dp_ti->vsync_offset_hi = ti->vsync_offset_hi;
dp_ti->vsync_offset_lo = ti->vsync_offset_lo;
dp_ti->vsync_pulse_width_hi = ti->vsync_pulse_width_hi;
dp_ti->vsync_pulse_width_lo = ti->vsync_pulse_width_lo;
ret = 0;
out:
kfree(gct);
return ret;
}
static void mid_get_vbt_data(struct drm_psb_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
u32 addr;
u8 __iomem *vbt_virtual;
struct vbt_header vbt_header;
struct pci_dev *pci_gfx_root = pci_get_bus_and_slot(0, PCI_DEVFN(2, 0));
int ret = -1;
/* Get the address of the platform config vbt */
pci_read_config_dword(pci_gfx_root, 0xFC, &addr);
pci_dev_put(pci_gfx_root);
dev_dbg(dev->dev, "drm platform config address is %x\n", addr);
if (!addr)
goto out;
/* get the virtual address of the vbt */
vbt_virtual = ioremap(addr, sizeof(vbt_header));
if (!vbt_virtual)
goto out;
memcpy_fromio(&vbt_header, vbt_virtual, sizeof(vbt_header));
iounmap(vbt_virtual);
if (memcmp(&vbt_header.signature, "$GCT", 4))
goto out;
dev_dbg(dev->dev, "GCT revision is %02x\n", vbt_header.revision);
switch (vbt_header.revision) {
case 0x00:
ret = mid_get_vbt_data_r0(dev_priv, addr);
break;
case 0x01:
ret = mid_get_vbt_data_r1(dev_priv, addr);
break;
case 0x10:
ret = mid_get_vbt_data_r10(dev_priv, addr);
break;
default:
dev_err(dev->dev, "Unknown revision of GCT!\n");
}
out:
if (ret)
dev_err(dev->dev, "Unable to read GCT!");
else
dev_priv->has_gct = true;
}
int mid_chip_setup(struct drm_device *dev)
{
struct drm_psb_private *dev_priv = dev->dev_private;
mid_get_fuse_settings(dev);
mid_get_vbt_data(dev_priv);
mid_get_pci_revID(dev_priv);
return 0;
}
|
