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cfd8d744 BG |
1 | /* |
2 | * Copyright (C) STMicroelectronics SA 2014 | |
3 | * Author: Fabien Dessenne <fabien.dessenne@st.com> for STMicroelectronics. | |
4 | * License terms: GNU General Public License (GPL), version 2 | |
5 | */ | |
0f3e1561 | 6 | #include <linux/seq_file.h> |
cfd8d744 BG |
7 | |
8 | #include <drm/drmP.h> | |
9 | ||
9e1f05b2 | 10 | #include "sti_plane.h" |
cfd8d744 BG |
11 | #include "sti_vid.h" |
12 | #include "sti_vtg.h" | |
13 | ||
14 | /* Registers */ | |
15 | #define VID_CTL 0x00 | |
16 | #define VID_ALP 0x04 | |
17 | #define VID_CLF 0x08 | |
18 | #define VID_VPO 0x0C | |
19 | #define VID_VPS 0x10 | |
20 | #define VID_KEY1 0x28 | |
21 | #define VID_KEY2 0x2C | |
22 | #define VID_MPR0 0x30 | |
23 | #define VID_MPR1 0x34 | |
24 | #define VID_MPR2 0x38 | |
25 | #define VID_MPR3 0x3C | |
26 | #define VID_MST 0x68 | |
27 | #define VID_BC 0x70 | |
28 | #define VID_TINT 0x74 | |
29 | #define VID_CSAT 0x78 | |
30 | ||
31 | /* Registers values */ | |
32 | #define VID_CTL_IGNORE (BIT(31) | BIT(30)) | |
33 | #define VID_CTL_PSI_ENABLE (BIT(2) | BIT(1) | BIT(0)) | |
34 | #define VID_ALP_OPAQUE 0x00000080 | |
35 | #define VID_BC_DFLT 0x00008000 | |
36 | #define VID_TINT_DFLT 0x00000000 | |
37 | #define VID_CSAT_DFLT 0x00000080 | |
38 | /* YCbCr to RGB BT709: | |
39 | * R = Y+1.5391Cr | |
40 | * G = Y-0.4590Cr-0.1826Cb | |
41 | * B = Y+1.8125Cb */ | |
42 | #define VID_MPR0_BT709 0x0A800000 | |
43 | #define VID_MPR1_BT709 0x0AC50000 | |
44 | #define VID_MPR2_BT709 0x07150545 | |
45 | #define VID_MPR3_BT709 0x00000AE8 | |
05a142c2 BH |
46 | /* YCbCr to RGB BT709: |
47 | * R = Y+1.3711Cr | |
48 | * G = Y-0.6992Cr-0.3359Cb | |
49 | * B = Y+1.7344Cb | |
50 | */ | |
51 | #define VID_MPR0_BT601 0x0A800000 | |
52 | #define VID_MPR1_BT601 0x0AAF0000 | |
53 | #define VID_MPR2_BT601 0x094E0754 | |
54 | #define VID_MPR3_BT601 0x00000ADD | |
55 | ||
56 | #define VID_MIN_HD_HEIGHT 720 | |
cfd8d744 | 57 | |
90dffef5 VA |
58 | #define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \ |
59 | readl(vid->regs + reg)) | |
60 | ||
61 | static void vid_dbg_ctl(struct seq_file *s, int val) | |
62 | { | |
63 | val = val >> 30; | |
64 | seq_puts(s, "\t"); | |
65 | ||
66 | if (!(val & 1)) | |
67 | seq_puts(s, "NOT "); | |
68 | seq_puts(s, "ignored on main mixer - "); | |
69 | ||
70 | if (!(val & 2)) | |
71 | seq_puts(s, "NOT "); | |
72 | seq_puts(s, "ignored on aux mixer"); | |
73 | } | |
74 | ||
75 | static void vid_dbg_vpo(struct seq_file *s, int val) | |
76 | { | |
77 | seq_printf(s, "\txdo:%4d\tydo:%4d", val & 0x0FFF, (val >> 16) & 0x0FFF); | |
78 | } | |
79 | ||
80 | static void vid_dbg_vps(struct seq_file *s, int val) | |
81 | { | |
82 | seq_printf(s, "\txds:%4d\tyds:%4d", val & 0x0FFF, (val >> 16) & 0x0FFF); | |
83 | } | |
84 | ||
85 | static void vid_dbg_mst(struct seq_file *s, int val) | |
86 | { | |
87 | if (val & 1) | |
88 | seq_puts(s, "\tBUFFER UNDERFLOW!"); | |
89 | } | |
90 | ||
91 | static int vid_dbg_show(struct seq_file *s, void *arg) | |
92 | { | |
93 | struct drm_info_node *node = s->private; | |
94 | struct sti_vid *vid = (struct sti_vid *)node->info_ent->data; | |
95 | struct drm_device *dev = node->minor->dev; | |
96 | int ret; | |
97 | ||
98 | ret = mutex_lock_interruptible(&dev->struct_mutex); | |
99 | if (ret) | |
100 | return ret; | |
101 | ||
102 | seq_printf(s, "VID: (vaddr= 0x%p)", vid->regs); | |
103 | ||
104 | DBGFS_DUMP(VID_CTL); | |
105 | vid_dbg_ctl(s, readl(vid->regs + VID_CTL)); | |
106 | DBGFS_DUMP(VID_ALP); | |
107 | DBGFS_DUMP(VID_CLF); | |
108 | DBGFS_DUMP(VID_VPO); | |
109 | vid_dbg_vpo(s, readl(vid->regs + VID_VPO)); | |
110 | DBGFS_DUMP(VID_VPS); | |
111 | vid_dbg_vps(s, readl(vid->regs + VID_VPS)); | |
112 | DBGFS_DUMP(VID_KEY1); | |
113 | DBGFS_DUMP(VID_KEY2); | |
114 | DBGFS_DUMP(VID_MPR0); | |
115 | DBGFS_DUMP(VID_MPR1); | |
116 | DBGFS_DUMP(VID_MPR2); | |
117 | DBGFS_DUMP(VID_MPR3); | |
118 | DBGFS_DUMP(VID_MST); | |
119 | vid_dbg_mst(s, readl(vid->regs + VID_MST)); | |
120 | DBGFS_DUMP(VID_BC); | |
121 | DBGFS_DUMP(VID_TINT); | |
122 | DBGFS_DUMP(VID_CSAT); | |
123 | seq_puts(s, "\n"); | |
124 | ||
125 | mutex_unlock(&dev->struct_mutex); | |
126 | return 0; | |
127 | } | |
128 | ||
129 | static struct drm_info_list vid_debugfs_files[] = { | |
130 | { "vid", vid_dbg_show, 0, NULL }, | |
131 | }; | |
132 | ||
133 | static int vid_debugfs_init(struct sti_vid *vid, struct drm_minor *minor) | |
134 | { | |
135 | unsigned int i; | |
136 | ||
137 | for (i = 0; i < ARRAY_SIZE(vid_debugfs_files); i++) | |
138 | vid_debugfs_files[i].data = vid; | |
139 | ||
140 | return drm_debugfs_create_files(vid_debugfs_files, | |
141 | ARRAY_SIZE(vid_debugfs_files), | |
142 | minor->debugfs_root, minor); | |
143 | } | |
144 | ||
29d1dc62 VA |
145 | void sti_vid_commit(struct sti_vid *vid, |
146 | struct drm_plane_state *state) | |
cfd8d744 | 147 | { |
29d1dc62 VA |
148 | struct drm_crtc *crtc = state->crtc; |
149 | struct drm_display_mode *mode = &crtc->mode; | |
150 | int dst_x = state->crtc_x; | |
151 | int dst_y = state->crtc_y; | |
152 | int dst_w = clamp_val(state->crtc_w, 0, mode->crtc_hdisplay - dst_x); | |
153 | int dst_h = clamp_val(state->crtc_h, 0, mode->crtc_vdisplay - dst_y); | |
05a142c2 | 154 | int src_h = state->src_h >> 16; |
871bcdfe | 155 | u32 val, ydo, xdo, yds, xds; |
cfd8d744 | 156 | |
29d1dc62 VA |
157 | /* Input / output size |
158 | * Align to upper even value */ | |
159 | dst_w = ALIGN(dst_w, 2); | |
160 | dst_h = ALIGN(dst_h, 2); | |
161 | ||
cfd8d744 BG |
162 | /* Unmask */ |
163 | val = readl(vid->regs + VID_CTL); | |
164 | val &= ~VID_CTL_IGNORE; | |
165 | writel(val, vid->regs + VID_CTL); | |
166 | ||
29d1dc62 VA |
167 | ydo = sti_vtg_get_line_number(*mode, dst_y); |
168 | yds = sti_vtg_get_line_number(*mode, dst_y + dst_h - 1); | |
169 | xdo = sti_vtg_get_pixel_number(*mode, dst_x); | |
170 | xds = sti_vtg_get_pixel_number(*mode, dst_x + dst_w - 1); | |
cfd8d744 BG |
171 | |
172 | writel((ydo << 16) | xdo, vid->regs + VID_VPO); | |
173 | writel((yds << 16) | xds, vid->regs + VID_VPS); | |
05a142c2 BH |
174 | |
175 | /* Color conversion parameters */ | |
176 | if (src_h >= VID_MIN_HD_HEIGHT) { | |
177 | writel(VID_MPR0_BT709, vid->regs + VID_MPR0); | |
178 | writel(VID_MPR1_BT709, vid->regs + VID_MPR1); | |
179 | writel(VID_MPR2_BT709, vid->regs + VID_MPR2); | |
180 | writel(VID_MPR3_BT709, vid->regs + VID_MPR3); | |
181 | } else { | |
182 | writel(VID_MPR0_BT601, vid->regs + VID_MPR0); | |
183 | writel(VID_MPR1_BT601, vid->regs + VID_MPR1); | |
184 | writel(VID_MPR2_BT601, vid->regs + VID_MPR2); | |
185 | writel(VID_MPR3_BT601, vid->regs + VID_MPR3); | |
186 | } | |
cfd8d744 BG |
187 | } |
188 | ||
29d1dc62 | 189 | void sti_vid_disable(struct sti_vid *vid) |
cfd8d744 BG |
190 | { |
191 | u32 val; | |
192 | ||
193 | /* Mask */ | |
194 | val = readl(vid->regs + VID_CTL); | |
195 | val |= VID_CTL_IGNORE; | |
196 | writel(val, vid->regs + VID_CTL); | |
cfd8d744 BG |
197 | } |
198 | ||
871bcdfe | 199 | static void sti_vid_init(struct sti_vid *vid) |
cfd8d744 BG |
200 | { |
201 | /* Enable PSI, Mask layer */ | |
202 | writel(VID_CTL_PSI_ENABLE | VID_CTL_IGNORE, vid->regs + VID_CTL); | |
203 | ||
204 | /* Opaque */ | |
205 | writel(VID_ALP_OPAQUE, vid->regs + VID_ALP); | |
206 | ||
cfd8d744 BG |
207 | /* Brightness, contrast, tint, saturation */ |
208 | writel(VID_BC_DFLT, vid->regs + VID_BC); | |
209 | writel(VID_TINT_DFLT, vid->regs + VID_TINT); | |
210 | writel(VID_CSAT_DFLT, vid->regs + VID_CSAT); | |
211 | } | |
212 | ||
90dffef5 VA |
213 | struct sti_vid *sti_vid_create(struct device *dev, struct drm_device *drm_dev, |
214 | int id, void __iomem *baseaddr) | |
cfd8d744 | 215 | { |
871bcdfe | 216 | struct sti_vid *vid; |
cfd8d744 BG |
217 | |
218 | vid = devm_kzalloc(dev, sizeof(*vid), GFP_KERNEL); | |
219 | if (!vid) { | |
220 | DRM_ERROR("Failed to allocate memory for VID\n"); | |
221 | return NULL; | |
222 | } | |
223 | ||
871bcdfe VA |
224 | vid->dev = dev; |
225 | vid->regs = baseaddr; | |
226 | vid->id = id; | |
227 | ||
228 | sti_vid_init(vid); | |
cfd8d744 | 229 | |
90dffef5 VA |
230 | if (vid_debugfs_init(vid, drm_dev->primary)) |
231 | DRM_ERROR("VID debugfs setup failed\n"); | |
232 | ||
cfd8d744 BG |
233 | return vid; |
234 | } |