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
|
/*
* Copyright (C) STMicroelectronics SA 2014
* Author: Fabien Dessenne <fabien.dessenne@st.com> for STMicroelectronics.
* License terms: GNU General Public License (GPL), version 2
*/
#include <linux/seq_file.h>
#include <drm/drmP.h>
#include "sti_plane.h"
#include "sti_vid.h"
#include "sti_vtg.h"
/* Registers */
#define VID_CTL 0x00
#define VID_ALP 0x04
#define VID_CLF 0x08
#define VID_VPO 0x0C
#define VID_VPS 0x10
#define VID_KEY1 0x28
#define VID_KEY2 0x2C
#define VID_MPR0 0x30
#define VID_MPR1 0x34
#define VID_MPR2 0x38
#define VID_MPR3 0x3C
#define VID_MST 0x68
#define VID_BC 0x70
#define VID_TINT 0x74
#define VID_CSAT 0x78
/* Registers values */
#define VID_CTL_IGNORE (BIT(31) | BIT(30))
#define VID_CTL_PSI_ENABLE (BIT(2) | BIT(1) | BIT(0))
#define VID_ALP_OPAQUE 0x00000080
#define VID_BC_DFLT 0x00008000
#define VID_TINT_DFLT 0x00000000
#define VID_CSAT_DFLT 0x00000080
/* YCbCr to RGB BT709:
* R = Y+1.5391Cr
* G = Y-0.4590Cr-0.1826Cb
* B = Y+1.8125Cb */
#define VID_MPR0_BT709 0x0A800000
#define VID_MPR1_BT709 0x0AC50000
#define VID_MPR2_BT709 0x07150545
#define VID_MPR3_BT709 0x00000AE8
/* YCbCr to RGB BT709:
* R = Y+1.3711Cr
* G = Y-0.6992Cr-0.3359Cb
* B = Y+1.7344Cb
*/
#define VID_MPR0_BT601 0x0A800000
#define VID_MPR1_BT601 0x0AAF0000
#define VID_MPR2_BT601 0x094E0754
#define VID_MPR3_BT601 0x00000ADD
#define VID_MIN_HD_HEIGHT 720
#define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \
readl(vid->regs + reg))
static void vid_dbg_ctl(struct seq_file *s, int val)
{
val = val >> 30;
seq_puts(s, "\t");
if (!(val & 1))
seq_puts(s, "NOT ");
seq_puts(s, "ignored on main mixer - ");
if (!(val & 2))
seq_puts(s, "NOT ");
seq_puts(s, "ignored on aux mixer");
}
static void vid_dbg_vpo(struct seq_file *s, int val)
{
seq_printf(s, "\txdo:%4d\tydo:%4d", val & 0x0FFF, (val >> 16) & 0x0FFF);
}
static void vid_dbg_vps(struct seq_file *s, int val)
{
seq_printf(s, "\txds:%4d\tyds:%4d", val & 0x0FFF, (val >> 16) & 0x0FFF);
}
static void vid_dbg_mst(struct seq_file *s, int val)
{
if (val & 1)
seq_puts(s, "\tBUFFER UNDERFLOW!");
}
static int vid_dbg_show(struct seq_file *s, void *arg)
{
struct drm_info_node *node = s->private;
struct sti_vid *vid = (struct sti_vid *)node->info_ent->data;
struct drm_device *dev = node->minor->dev;
int ret;
ret = mutex_lock_interruptible(&dev->struct_mutex);
if (ret)
return ret;
seq_printf(s, "VID: (vaddr= 0x%p)", vid->regs);
DBGFS_DUMP(VID_CTL);
vid_dbg_ctl(s, readl(vid->regs + VID_CTL));
DBGFS_DUMP(VID_ALP);
DBGFS_DUMP(VID_CLF);
DBGFS_DUMP(VID_VPO);
vid_dbg_vpo(s, readl(vid->regs + VID_VPO));
DBGFS_DUMP(VID_VPS);
vid_dbg_vps(s, readl(vid->regs + VID_VPS));
DBGFS_DUMP(VID_KEY1);
DBGFS_DUMP(VID_KEY2);
DBGFS_DUMP(VID_MPR0);
DBGFS_DUMP(VID_MPR1);
DBGFS_DUMP(VID_MPR2);
DBGFS_DUMP(VID_MPR3);
DBGFS_DUMP(VID_MST);
vid_dbg_mst(s, readl(vid->regs + VID_MST));
DBGFS_DUMP(VID_BC);
DBGFS_DUMP(VID_TINT);
DBGFS_DUMP(VID_CSAT);
seq_puts(s, "\n");
mutex_unlock(&dev->struct_mutex);
return 0;
}
static struct drm_info_list vid_debugfs_files[] = {
{ "vid", vid_dbg_show, 0, NULL },
};
static int vid_debugfs_init(struct sti_vid *vid, struct drm_minor *minor)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(vid_debugfs_files); i++)
vid_debugfs_files[i].data = vid;
return drm_debugfs_create_files(vid_debugfs_files,
ARRAY_SIZE(vid_debugfs_files),
minor->debugfs_root, minor);
}
void sti_vid_commit(struct sti_vid *vid,
struct drm_plane_state *state)
{
struct drm_crtc *crtc = state->crtc;
struct drm_display_mode *mode = &crtc->mode;
int dst_x = state->crtc_x;
int dst_y = state->crtc_y;
int dst_w = clamp_val(state->crtc_w, 0, mode->crtc_hdisplay - dst_x);
int dst_h = clamp_val(state->crtc_h, 0, mode->crtc_vdisplay - dst_y);
int src_h = state->src_h >> 16;
u32 val, ydo, xdo, yds, xds;
/* Input / output size
* Align to upper even value */
dst_w = ALIGN(dst_w, 2);
dst_h = ALIGN(dst_h, 2);
/* Unmask */
val = readl(vid->regs + VID_CTL);
val &= ~VID_CTL_IGNORE;
writel(val, vid->regs + VID_CTL);
ydo = sti_vtg_get_line_number(*mode, dst_y);
yds = sti_vtg_get_line_number(*mode, dst_y + dst_h - 1);
xdo = sti_vtg_get_pixel_number(*mode, dst_x);
xds = sti_vtg_get_pixel_number(*mode, dst_x + dst_w - 1);
writel((ydo << 16) | xdo, vid->regs + VID_VPO);
writel((yds << 16) | xds, vid->regs + VID_VPS);
/* Color conversion parameters */
if (src_h >= VID_MIN_HD_HEIGHT) {
writel(VID_MPR0_BT709, vid->regs + VID_MPR0);
writel(VID_MPR1_BT709, vid->regs + VID_MPR1);
writel(VID_MPR2_BT709, vid->regs + VID_MPR2);
writel(VID_MPR3_BT709, vid->regs + VID_MPR3);
} else {
writel(VID_MPR0_BT601, vid->regs + VID_MPR0);
writel(VID_MPR1_BT601, vid->regs + VID_MPR1);
writel(VID_MPR2_BT601, vid->regs + VID_MPR2);
writel(VID_MPR3_BT601, vid->regs + VID_MPR3);
}
}
void sti_vid_disable(struct sti_vid *vid)
{
u32 val;
/* Mask */
val = readl(vid->regs + VID_CTL);
val |= VID_CTL_IGNORE;
writel(val, vid->regs + VID_CTL);
}
static void sti_vid_init(struct sti_vid *vid)
{
/* Enable PSI, Mask layer */
writel(VID_CTL_PSI_ENABLE | VID_CTL_IGNORE, vid->regs + VID_CTL);
/* Opaque */
writel(VID_ALP_OPAQUE, vid->regs + VID_ALP);
/* Brightness, contrast, tint, saturation */
writel(VID_BC_DFLT, vid->regs + VID_BC);
writel(VID_TINT_DFLT, vid->regs + VID_TINT);
writel(VID_CSAT_DFLT, vid->regs + VID_CSAT);
}
struct sti_vid *sti_vid_create(struct device *dev, struct drm_device *drm_dev,
int id, void __iomem *baseaddr)
{
struct sti_vid *vid;
vid = devm_kzalloc(dev, sizeof(*vid), GFP_KERNEL);
if (!vid) {
DRM_ERROR("Failed to allocate memory for VID\n");
return NULL;
}
vid->dev = dev;
vid->regs = baseaddr;
vid->id = id;
sti_vid_init(vid);
if (vid_debugfs_init(vid, drm_dev->primary))
DRM_ERROR("VID debugfs setup failed\n");
return vid;
}
|
