Commit | Line | Data |
---|---|---|
96006a77 BG |
1 | /* |
2 | * Copyright (C) STMicroelectronics SA 2014 | |
3 | * Authors: Vincent Abriou <vincent.abriou@st.com> | |
4 | * Fabien Dessenne <fabien.dessenne@st.com> | |
5 | * for STMicroelectronics. | |
6 | * License terms: GNU General Public License (GPL), version 2 | |
7 | */ | |
96006a77 | 8 | |
0f3e1561 AB |
9 | #include <linux/seq_file.h> |
10 | ||
dd86dc2f | 11 | #include <drm/drm_atomic.h> |
29d1dc62 VA |
12 | #include <drm/drm_fb_cma_helper.h> |
13 | #include <drm/drm_gem_cma_helper.h> | |
29d1dc62 VA |
14 | |
15 | #include "sti_compositor.h" | |
96006a77 | 16 | #include "sti_cursor.h" |
9e1f05b2 | 17 | #include "sti_plane.h" |
96006a77 BG |
18 | #include "sti_vtg.h" |
19 | ||
20 | /* Registers */ | |
21 | #define CUR_CTL 0x00 | |
22 | #define CUR_VPO 0x0C | |
23 | #define CUR_PML 0x14 | |
24 | #define CUR_PMP 0x18 | |
25 | #define CUR_SIZE 0x1C | |
26 | #define CUR_CML 0x20 | |
27 | #define CUR_AWS 0x28 | |
28 | #define CUR_AWE 0x2C | |
29 | ||
30 | #define CUR_CTL_CLUT_UPDATE BIT(1) | |
31 | ||
32 | #define STI_CURS_MIN_SIZE 1 | |
33 | #define STI_CURS_MAX_SIZE 128 | |
34 | ||
35 | /* | |
36 | * pixmap dma buffer stucture | |
37 | * | |
38 | * @paddr: physical address | |
39 | * @size: buffer size | |
40 | * @base: virtual address | |
41 | */ | |
42 | struct dma_pixmap { | |
43 | dma_addr_t paddr; | |
44 | size_t size; | |
45 | void *base; | |
46 | }; | |
47 | ||
48 | /** | |
49 | * STI Cursor structure | |
50 | * | |
29d1dc62 VA |
51 | * @sti_plane: sti_plane structure |
52 | * @dev: driver device | |
53 | * @regs: cursor registers | |
54 | * @width: cursor width | |
55 | * @height: cursor height | |
56 | * @clut: color look up table | |
57 | * @clut_paddr: color look up table physical address | |
58 | * @pixmap: pixmap dma buffer (clut8-format cursor) | |
96006a77 BG |
59 | */ |
60 | struct sti_cursor { | |
871bcdfe VA |
61 | struct sti_plane plane; |
62 | struct device *dev; | |
63 | void __iomem *regs; | |
96006a77 BG |
64 | unsigned int width; |
65 | unsigned int height; | |
66 | unsigned short *clut; | |
67 | dma_addr_t clut_paddr; | |
68 | struct dma_pixmap pixmap; | |
69 | }; | |
70 | ||
71 | static const uint32_t cursor_supported_formats[] = { | |
72 | DRM_FORMAT_ARGB8888, | |
73 | }; | |
74 | ||
871bcdfe | 75 | #define to_sti_cursor(x) container_of(x, struct sti_cursor, plane) |
96006a77 | 76 | |
f46f3beb VA |
77 | #define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \ |
78 | readl(cursor->regs + reg)) | |
79 | ||
80 | static void cursor_dbg_vpo(struct seq_file *s, u32 val) | |
81 | { | |
82 | seq_printf(s, "\txdo:%4d\tydo:%4d", val & 0x0FFF, (val >> 16) & 0x0FFF); | |
83 | } | |
84 | ||
85 | static void cursor_dbg_size(struct seq_file *s, u32 val) | |
86 | { | |
87 | seq_printf(s, "\t%d x %d", val & 0x07FF, (val >> 16) & 0x07FF); | |
88 | } | |
89 | ||
90 | static void cursor_dbg_pml(struct seq_file *s, | |
91 | struct sti_cursor *cursor, u32 val) | |
92 | { | |
93 | if (cursor->pixmap.paddr == val) | |
94 | seq_printf(s, "\tVirt @: %p", cursor->pixmap.base); | |
95 | } | |
96 | ||
97 | static void cursor_dbg_cml(struct seq_file *s, | |
98 | struct sti_cursor *cursor, u32 val) | |
99 | { | |
100 | if (cursor->clut_paddr == val) | |
101 | seq_printf(s, "\tVirt @: %p", cursor->clut); | |
102 | } | |
103 | ||
104 | static int cursor_dbg_show(struct seq_file *s, void *data) | |
105 | { | |
106 | struct drm_info_node *node = s->private; | |
107 | struct sti_cursor *cursor = (struct sti_cursor *)node->info_ent->data; | |
108 | struct drm_device *dev = node->minor->dev; | |
109 | int ret; | |
110 | ||
111 | ret = mutex_lock_interruptible(&dev->struct_mutex); | |
112 | if (ret) | |
113 | return ret; | |
114 | ||
115 | seq_printf(s, "%s: (vaddr = 0x%p)", | |
116 | sti_plane_to_str(&cursor->plane), cursor->regs); | |
117 | ||
118 | DBGFS_DUMP(CUR_CTL); | |
119 | DBGFS_DUMP(CUR_VPO); | |
120 | cursor_dbg_vpo(s, readl(cursor->regs + CUR_VPO)); | |
121 | DBGFS_DUMP(CUR_PML); | |
122 | cursor_dbg_pml(s, cursor, readl(cursor->regs + CUR_PML)); | |
123 | DBGFS_DUMP(CUR_PMP); | |
124 | DBGFS_DUMP(CUR_SIZE); | |
125 | cursor_dbg_size(s, readl(cursor->regs + CUR_SIZE)); | |
126 | DBGFS_DUMP(CUR_CML); | |
127 | cursor_dbg_cml(s, cursor, readl(cursor->regs + CUR_CML)); | |
128 | DBGFS_DUMP(CUR_AWS); | |
129 | DBGFS_DUMP(CUR_AWE); | |
130 | seq_puts(s, "\n"); | |
131 | ||
132 | mutex_unlock(&dev->struct_mutex); | |
133 | return 0; | |
134 | } | |
135 | ||
136 | static struct drm_info_list cursor_debugfs_files[] = { | |
137 | { "cursor", cursor_dbg_show, 0, NULL }, | |
138 | }; | |
139 | ||
140 | static int cursor_debugfs_init(struct sti_cursor *cursor, | |
141 | struct drm_minor *minor) | |
142 | { | |
143 | unsigned int i; | |
144 | ||
145 | for (i = 0; i < ARRAY_SIZE(cursor_debugfs_files); i++) | |
146 | cursor_debugfs_files[i].data = cursor; | |
147 | ||
148 | return drm_debugfs_create_files(cursor_debugfs_files, | |
149 | ARRAY_SIZE(cursor_debugfs_files), | |
150 | minor->debugfs_root, minor); | |
151 | } | |
152 | ||
29d1dc62 | 153 | static void sti_cursor_argb8888_to_clut8(struct sti_cursor *cursor, u32 *src) |
96006a77 | 154 | { |
96006a77 BG |
155 | u8 *dst = cursor->pixmap.base; |
156 | unsigned int i, j; | |
157 | u32 a, r, g, b; | |
158 | ||
159 | for (i = 0; i < cursor->height; i++) { | |
160 | for (j = 0; j < cursor->width; j++) { | |
161 | /* Pick the 2 higher bits of each component */ | |
162 | a = (*src >> 30) & 3; | |
163 | r = (*src >> 22) & 3; | |
164 | g = (*src >> 14) & 3; | |
165 | b = (*src >> 6) & 3; | |
166 | *dst = a << 6 | r << 4 | g << 2 | b; | |
167 | src++; | |
168 | dst++; | |
169 | } | |
170 | } | |
171 | } | |
172 | ||
29d1dc62 VA |
173 | static void sti_cursor_init(struct sti_cursor *cursor) |
174 | { | |
175 | unsigned short *base = cursor->clut; | |
176 | unsigned int a, r, g, b; | |
177 | ||
178 | /* Assign CLUT values, ARGB444 format */ | |
179 | for (a = 0; a < 4; a++) | |
180 | for (r = 0; r < 4; r++) | |
181 | for (g = 0; g < 4; g++) | |
182 | for (b = 0; b < 4; b++) | |
183 | *base++ = (a * 5) << 12 | | |
184 | (r * 5) << 8 | | |
185 | (g * 5) << 4 | | |
186 | (b * 5); | |
187 | } | |
188 | ||
dd86dc2f VA |
189 | static int sti_cursor_atomic_check(struct drm_plane *drm_plane, |
190 | struct drm_plane_state *state) | |
96006a77 | 191 | { |
29d1dc62 | 192 | struct sti_plane *plane = to_sti_plane(drm_plane); |
871bcdfe | 193 | struct sti_cursor *cursor = to_sti_cursor(plane); |
29d1dc62 | 194 | struct drm_crtc *crtc = state->crtc; |
29d1dc62 | 195 | struct drm_framebuffer *fb = state->fb; |
dd86dc2f VA |
196 | struct drm_crtc_state *crtc_state; |
197 | struct drm_display_mode *mode; | |
198 | int dst_x, dst_y, dst_w, dst_h; | |
199 | int src_w, src_h; | |
200 | ||
201 | /* no need for further checks if the plane is being disabled */ | |
202 | if (!crtc || !fb) | |
203 | return 0; | |
204 | ||
205 | crtc_state = drm_atomic_get_crtc_state(state->state, crtc); | |
206 | mode = &crtc_state->mode; | |
207 | dst_x = state->crtc_x; | |
208 | dst_y = state->crtc_y; | |
209 | dst_w = clamp_val(state->crtc_w, 0, mode->crtc_hdisplay - dst_x); | |
210 | dst_h = clamp_val(state->crtc_h, 0, mode->crtc_vdisplay - dst_y); | |
29d1dc62 | 211 | /* src_x are in 16.16 format */ |
dd86dc2f VA |
212 | src_w = state->src_w >> 16; |
213 | src_h = state->src_h >> 16; | |
96006a77 | 214 | |
29d1dc62 VA |
215 | if (src_w < STI_CURS_MIN_SIZE || |
216 | src_h < STI_CURS_MIN_SIZE || | |
217 | src_w > STI_CURS_MAX_SIZE || | |
218 | src_h > STI_CURS_MAX_SIZE) { | |
96006a77 | 219 | DRM_ERROR("Invalid cursor size (%dx%d)\n", |
29d1dc62 | 220 | src_w, src_h); |
dd86dc2f | 221 | return -EINVAL; |
96006a77 BG |
222 | } |
223 | ||
224 | /* If the cursor size has changed, re-allocated the pixmap */ | |
225 | if (!cursor->pixmap.base || | |
29d1dc62 VA |
226 | (cursor->width != src_w) || |
227 | (cursor->height != src_h)) { | |
228 | cursor->width = src_w; | |
229 | cursor->height = src_h; | |
96006a77 BG |
230 | |
231 | if (cursor->pixmap.base) | |
f6e45661 LR |
232 | dma_free_wc(cursor->dev, cursor->pixmap.size, |
233 | cursor->pixmap.base, cursor->pixmap.paddr); | |
96006a77 BG |
234 | |
235 | cursor->pixmap.size = cursor->width * cursor->height; | |
236 | ||
f6e45661 LR |
237 | cursor->pixmap.base = dma_alloc_wc(cursor->dev, |
238 | cursor->pixmap.size, | |
239 | &cursor->pixmap.paddr, | |
240 | GFP_KERNEL | GFP_DMA); | |
96006a77 BG |
241 | if (!cursor->pixmap.base) { |
242 | DRM_ERROR("Failed to allocate memory for pixmap\n"); | |
dd86dc2f | 243 | return -EINVAL; |
96006a77 BG |
244 | } |
245 | } | |
246 | ||
dd86dc2f | 247 | if (!drm_fb_cma_get_gem_obj(fb, 0)) { |
29d1dc62 | 248 | DRM_ERROR("Can't get CMA GEM object for fb\n"); |
dd86dc2f | 249 | return -EINVAL; |
29d1dc62 VA |
250 | } |
251 | ||
dd86dc2f VA |
252 | DRM_DEBUG_KMS("CRTC:%d (%s) drm plane:%d (%s)\n", |
253 | crtc->base.id, sti_mixer_to_str(to_sti_mixer(crtc)), | |
254 | drm_plane->base.id, sti_plane_to_str(plane)); | |
255 | DRM_DEBUG_KMS("(%dx%d)@(%d,%d)\n", dst_w, dst_h, dst_x, dst_y); | |
256 | ||
257 | return 0; | |
258 | } | |
259 | ||
260 | static void sti_cursor_atomic_update(struct drm_plane *drm_plane, | |
261 | struct drm_plane_state *oldstate) | |
262 | { | |
263 | struct drm_plane_state *state = drm_plane->state; | |
264 | struct sti_plane *plane = to_sti_plane(drm_plane); | |
265 | struct sti_cursor *cursor = to_sti_cursor(plane); | |
266 | struct drm_crtc *crtc = state->crtc; | |
267 | struct drm_framebuffer *fb = state->fb; | |
268 | struct drm_display_mode *mode; | |
269 | int dst_x, dst_y; | |
270 | struct drm_gem_cma_object *cma_obj; | |
271 | u32 y, x; | |
272 | u32 val; | |
273 | ||
274 | if (!crtc || !fb) | |
275 | return; | |
276 | ||
277 | mode = &crtc->mode; | |
278 | dst_x = state->crtc_x; | |
279 | dst_y = state->crtc_y; | |
280 | ||
281 | cma_obj = drm_fb_cma_get_gem_obj(fb, 0); | |
282 | ||
96006a77 | 283 | /* Convert ARGB8888 to CLUT8 */ |
29d1dc62 | 284 | sti_cursor_argb8888_to_clut8(cursor, (u32 *)cma_obj->vaddr); |
96006a77 BG |
285 | |
286 | /* AWS and AWE depend on the mode */ | |
287 | y = sti_vtg_get_line_number(*mode, 0); | |
288 | x = sti_vtg_get_pixel_number(*mode, 0); | |
289 | val = y << 16 | x; | |
871bcdfe | 290 | writel(val, cursor->regs + CUR_AWS); |
96006a77 BG |
291 | y = sti_vtg_get_line_number(*mode, mode->vdisplay - 1); |
292 | x = sti_vtg_get_pixel_number(*mode, mode->hdisplay - 1); | |
293 | val = y << 16 | x; | |
871bcdfe | 294 | writel(val, cursor->regs + CUR_AWE); |
96006a77 | 295 | |
96006a77 | 296 | /* Set memory location, size, and position */ |
871bcdfe VA |
297 | writel(cursor->pixmap.paddr, cursor->regs + CUR_PML); |
298 | writel(cursor->width, cursor->regs + CUR_PMP); | |
299 | writel(cursor->height << 16 | cursor->width, cursor->regs + CUR_SIZE); | |
96006a77 | 300 | |
29d1dc62 | 301 | y = sti_vtg_get_line_number(*mode, dst_y); |
b83a8b53 | 302 | x = sti_vtg_get_pixel_number(*mode, dst_x); |
29d1dc62 | 303 | writel((y << 16) | x, cursor->regs + CUR_VPO); |
96006a77 | 304 | |
0b9d0416 FD |
305 | /* Set and fetch CLUT */ |
306 | writel(cursor->clut_paddr, cursor->regs + CUR_CML); | |
307 | writel(CUR_CTL_CLUT_UPDATE, cursor->regs + CUR_CTL); | |
308 | ||
bf8f9e4a VA |
309 | sti_plane_update_fps(plane, true, false); |
310 | ||
29d1dc62 | 311 | plane->status = STI_PLANE_UPDATED; |
96006a77 BG |
312 | } |
313 | ||
29d1dc62 VA |
314 | static void sti_cursor_atomic_disable(struct drm_plane *drm_plane, |
315 | struct drm_plane_state *oldstate) | |
96006a77 | 316 | { |
29d1dc62 | 317 | struct sti_plane *plane = to_sti_plane(drm_plane); |
96006a77 | 318 | |
29d1dc62 VA |
319 | if (!drm_plane->crtc) { |
320 | DRM_DEBUG_DRIVER("drm plane:%d not enabled\n", | |
321 | drm_plane->base.id); | |
322 | return; | |
323 | } | |
96006a77 | 324 | |
29d1dc62 | 325 | DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n", |
dd86dc2f VA |
326 | drm_plane->crtc->base.id, |
327 | sti_mixer_to_str(to_sti_mixer(drm_plane->crtc)), | |
29d1dc62 VA |
328 | drm_plane->base.id, sti_plane_to_str(plane)); |
329 | ||
330 | plane->status = STI_PLANE_DISABLING; | |
96006a77 BG |
331 | } |
332 | ||
29d1dc62 | 333 | static const struct drm_plane_helper_funcs sti_cursor_helpers_funcs = { |
dd86dc2f | 334 | .atomic_check = sti_cursor_atomic_check, |
29d1dc62 VA |
335 | .atomic_update = sti_cursor_atomic_update, |
336 | .atomic_disable = sti_cursor_atomic_disable, | |
96006a77 BG |
337 | }; |
338 | ||
29d1dc62 VA |
339 | struct drm_plane *sti_cursor_create(struct drm_device *drm_dev, |
340 | struct device *dev, int desc, | |
341 | void __iomem *baseaddr, | |
342 | unsigned int possible_crtcs) | |
96006a77 BG |
343 | { |
344 | struct sti_cursor *cursor; | |
29d1dc62 VA |
345 | size_t size; |
346 | int res; | |
96006a77 BG |
347 | |
348 | cursor = devm_kzalloc(dev, sizeof(*cursor), GFP_KERNEL); | |
349 | if (!cursor) { | |
350 | DRM_ERROR("Failed to allocate memory for cursor\n"); | |
351 | return NULL; | |
352 | } | |
353 | ||
354 | /* Allocate clut buffer */ | |
29d1dc62 | 355 | size = 0x100 * sizeof(unsigned short); |
f6e45661 LR |
356 | cursor->clut = dma_alloc_wc(dev, size, &cursor->clut_paddr, |
357 | GFP_KERNEL | GFP_DMA); | |
96006a77 BG |
358 | |
359 | if (!cursor->clut) { | |
360 | DRM_ERROR("Failed to allocate memory for cursor clut\n"); | |
29d1dc62 | 361 | goto err_clut; |
96006a77 BG |
362 | } |
363 | ||
871bcdfe VA |
364 | cursor->dev = dev; |
365 | cursor->regs = baseaddr; | |
366 | cursor->plane.desc = desc; | |
29d1dc62 | 367 | cursor->plane.status = STI_PLANE_DISABLED; |
96006a77 | 368 | |
871bcdfe VA |
369 | sti_cursor_init(cursor); |
370 | ||
29d1dc62 VA |
371 | res = drm_universal_plane_init(drm_dev, &cursor->plane.drm_plane, |
372 | possible_crtcs, | |
373 | &sti_plane_helpers_funcs, | |
374 | cursor_supported_formats, | |
375 | ARRAY_SIZE(cursor_supported_formats), | |
b0b3b795 | 376 | DRM_PLANE_TYPE_CURSOR, NULL); |
29d1dc62 VA |
377 | if (res) { |
378 | DRM_ERROR("Failed to initialize universal plane\n"); | |
379 | goto err_plane; | |
380 | } | |
381 | ||
382 | drm_plane_helper_add(&cursor->plane.drm_plane, | |
383 | &sti_cursor_helpers_funcs); | |
384 | ||
385 | sti_plane_init_property(&cursor->plane, DRM_PLANE_TYPE_CURSOR); | |
386 | ||
f46f3beb VA |
387 | if (cursor_debugfs_init(cursor, drm_dev->primary)) |
388 | DRM_ERROR("CURSOR debugfs setup failed\n"); | |
389 | ||
29d1dc62 VA |
390 | return &cursor->plane.drm_plane; |
391 | ||
392 | err_plane: | |
f6e45661 | 393 | dma_free_wc(dev, size, cursor->clut, cursor->clut_paddr); |
29d1dc62 VA |
394 | err_clut: |
395 | devm_kfree(dev, cursor); | |
396 | return NULL; | |
96006a77 | 397 | } |