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
|
/*
* This file is part of the coreboot project.
*
* Copyright 2014 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that 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.
*/
#include <console/console.h>
#include <device/mmio.h>
#include <stdint.h>
#include <stdlib.h>
#include <edid.h>
#include <device/device.h>
#include <soc/nvidia/tegra/dc.h>
#include "chip.h"
#include <soc/display.h>
int dump = 0;
unsigned long READL(void *p)
{
unsigned long value;
/*
* In case of hard hung on readl(p), we can set dump > 1 to print out
* the address accessed.
*/
if (dump > 1)
printk(BIOS_SPEW, "readl %p\n", p);
value = read32(p);
if (dump)
printk(BIOS_SPEW, "readl %p %08lx\n", p, value);
return value;
}
void WRITEL(unsigned long value, void *p)
{
if (dump)
printk(BIOS_SPEW, "writel %p %08lx\n", p, value);
write32(p, value);
}
/* return in 1000ths of a Hertz */
static int tegra_calc_refresh(const struct soc_nvidia_tegra210_config *config)
{
int refresh;
int h_total = htotal(config);
int v_total = vtotal(config);
int pclk = config->pixel_clock;
if (!pclk || !h_total || !v_total)
return 0;
refresh = pclk / h_total;
refresh *= 1000;
refresh /= v_total;
return refresh;
}
static void print_mode(const struct soc_nvidia_tegra210_config *config)
{
if (config) {
int refresh = tegra_calc_refresh(config);
printk(BIOS_ERR,
"Panel Mode: %dx%d@%d.%03uHz pclk=%d\n",
config->xres, config->yres,
refresh / 1000, refresh % 1000,
config->pixel_clock);
}
}
int update_display_mode(struct display_controller *disp_ctrl,
struct soc_nvidia_tegra210_config *config)
{
print_mode(config);
printk(BIOS_ERR, "config: xres:yres: %d x %d\n ",
config->xres, config->yres);
printk(BIOS_ERR, " href_sync:vref_sync: %d x %d\n ",
config->href_to_sync, config->vref_to_sync);
printk(BIOS_ERR, " hsyn_width:vsyn_width: %d x %d\n ",
config->hsync_width, config->vsync_width);
printk(BIOS_ERR, " hfnt_porch:vfnt_porch: %d x %d\n ",
config->hfront_porch, config->vfront_porch);
printk(BIOS_ERR, " hbk_porch:vbk_porch: %d x %d\n ",
config->hback_porch, config->vback_porch);
WRITEL(0x0, &disp_ctrl->disp.disp_timing_opt);
WRITEL(0x0, &disp_ctrl->disp.disp_color_ctrl);
/* select win opt */
WRITEL(config->win_opt, &disp_ctrl->disp.disp_win_opt);
WRITEL(config->vref_to_sync << 16 | config->href_to_sync,
&disp_ctrl->disp.ref_to_sync);
WRITEL(config->vsync_width << 16 | config->hsync_width,
&disp_ctrl->disp.sync_width);
WRITEL((config->vback_porch << 16) | config->hback_porch,
&disp_ctrl->disp.back_porch);
WRITEL((config->vfront_porch << 16) | config->hfront_porch,
&disp_ctrl->disp.front_porch);
WRITEL(config->xres | (config->yres << 16),
&disp_ctrl->disp.disp_active);
/*
* PixelClock = (PLLD / 2) / ShiftClockDiv / PixelClockDiv.
*
* default: Set both shift_clk_div and pixel_clock_div to 1
*/
update_display_shift_clock_divider(disp_ctrl, SHIFT_CLK_DIVIDER(1));
return 0;
}
void update_display_shift_clock_divider(struct display_controller *disp_ctrl,
u32 shift_clock_div)
{
WRITEL((PIXEL_CLK_DIVIDER_PCD1 << PIXEL_CLK_DIVIDER_SHIFT) |
(shift_clock_div & 0xff) << SHIFT_CLK_DIVIDER_SHIFT,
&disp_ctrl->disp.disp_clk_ctrl);
printk(BIOS_DEBUG, "%s: ShiftClockDiv=%u\n",
__func__, shift_clock_div);
}
/*
* update_window:
* set up window registers and activate window except two:
* frame buffer base address register (WINBUF_START_ADDR) and
* display enable register (_DISP_DISP_WIN_OPTIONS). This is
* because framebuffer is not available until payload stage.
*/
void update_window(const struct soc_nvidia_tegra210_config *config)
{
struct display_controller *disp_ctrl =
(void *)config->display_controller;
u32 val;
WRITEL(WINDOW_A_SELECT, &disp_ctrl->cmd.disp_win_header);
WRITEL(((config->yres << 16) | config->xres), &disp_ctrl->win.size);
WRITEL(((config->display_yres << 16) |
(config->display_xres *
config->framebuffer_bits_per_pixel / 8)),
&disp_ctrl->win.prescaled_size);
val = ALIGN_UP((config->display_xres *
config->framebuffer_bits_per_pixel / 8), 64);
WRITEL(val, &disp_ctrl->win.line_stride);
WRITEL(config->color_depth, &disp_ctrl->win.color_depth);
WRITEL(COLOR_BLACK, &disp_ctrl->disp.blend_background_color);
WRITEL(((DDA_INC(config->display_yres, config->yres) << 16) |
DDA_INC(config->display_xres, config->xres)),
&disp_ctrl->win.dda_increment);
WRITEL(DISP_CTRL_MODE_C_DISPLAY, &disp_ctrl->cmd.disp_cmd);
WRITEL(WRITE_MUX_ACTIVE, &disp_ctrl->cmd.state_access);
WRITEL(0, &disp_ctrl->win.buffer_addr_mode);
val = PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE |
PW4_ENABLE | PM0_ENABLE | PM1_ENABLE;
WRITEL(val, &disp_ctrl->cmd.disp_pow_ctrl);
val = GENERAL_UPDATE | WIN_A_UPDATE;
WRITEL(val, &disp_ctrl->cmd.state_ctrl);
val = GENERAL_ACT_REQ | WIN_A_ACT_REQ;
WRITEL(val, &disp_ctrl->cmd.state_ctrl);
}
int tegra_dc_init(struct display_controller *disp_ctrl)
{
/* do not accept interrupts during initialization */
WRITEL(0x00000000, &disp_ctrl->cmd.int_mask);
WRITEL(WRITE_MUX_ASSEMBLY | READ_MUX_ASSEMBLY,
&disp_ctrl->cmd.state_access);
WRITEL(WINDOW_A_SELECT, &disp_ctrl->cmd.disp_win_header);
WRITEL(0x00000000, &disp_ctrl->win.win_opt);
WRITEL(0x00000000, &disp_ctrl->win.byte_swap);
WRITEL(0x00000000, &disp_ctrl->win.buffer_ctrl);
WRITEL(0x00000000, &disp_ctrl->win.pos);
WRITEL(0x00000000, &disp_ctrl->win.h_initial_dda);
WRITEL(0x00000000, &disp_ctrl->win.v_initial_dda);
WRITEL(0x00000000, &disp_ctrl->win.dda_increment);
WRITEL(0x00000000, &disp_ctrl->win.dv_ctrl);
WRITEL(0x01000000, &disp_ctrl->win.blend_layer_ctrl);
WRITEL(0x00000000, &disp_ctrl->win.blend_match_select);
WRITEL(0x00000000, &disp_ctrl->win.blend_nomatch_select);
WRITEL(0x00000000, &disp_ctrl->win.blend_alpha_1bit);
WRITEL(0x00000000, &disp_ctrl->winbuf.start_addr_hi);
WRITEL(0x00000000, &disp_ctrl->winbuf.addr_h_offset);
WRITEL(0x00000000, &disp_ctrl->winbuf.addr_v_offset);
WRITEL(0x00000000, &disp_ctrl->com.crc_checksum);
WRITEL(0x00000000, &disp_ctrl->com.pin_output_enb[0]);
WRITEL(0x00000000, &disp_ctrl->com.pin_output_enb[1]);
WRITEL(0x00000000, &disp_ctrl->com.pin_output_enb[2]);
WRITEL(0x00000000, &disp_ctrl->com.pin_output_enb[3]);
WRITEL(0x00000000, &disp_ctrl->disp.disp_signal_opt0);
return 0;
}
/*
* Save mode to cb tables
*/
void pass_mode_info_to_payload(
struct soc_nvidia_tegra210_config *config)
{
struct edid edid;
edid.mode.va = config->display_yres;
edid.mode.ha = config->display_xres;
edid_set_framebuffer_bits_per_pixel(&edid,
config->framebuffer_bits_per_pixel, 64);
printk(BIOS_INFO, "%s: bytes_per_line: %d, bits_per_pixel: %d\n "
" x_res x y_res: %d x %d, size: %d\n",
__func__, edid.bytes_per_line,
edid.framebuffer_bits_per_pixel,
edid.x_resolution, edid.y_resolution,
(edid.bytes_per_line * edid.y_resolution));
set_vbe_mode_info_valid(&edid, 0);
}
|
