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Commit | Line | Data |
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b73d1230 ID |
1 | /* exynos_drm_vidi.c |
2 | * | |
3 | * Copyright (C) 2012 Samsung Electronics Co.Ltd | |
4 | * Authors: | |
5 | * Inki Dae <inki.dae@samsung.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | */ | |
760285e7 | 13 | #include <drm/drmP.h> |
b73d1230 ID |
14 | |
15 | #include <linux/kernel.h> | |
b73d1230 | 16 | #include <linux/platform_device.h> |
1d50aa9c | 17 | #include <linux/component.h> |
8574e927 | 18 | #include <linux/timer.h> |
b73d1230 ID |
19 | |
20 | #include <drm/exynos_drm.h> | |
21 | ||
760285e7 DH |
22 | #include <drm/drm_edid.h> |
23 | #include <drm/drm_crtc_helper.h> | |
4ea9526b | 24 | #include <drm/drm_atomic_helper.h> |
b73d1230 ID |
25 | |
26 | #include "exynos_drm_drv.h" | |
27 | #include "exynos_drm_crtc.h" | |
0488f50e | 28 | #include "exynos_drm_fb.h" |
7ee14cdc | 29 | #include "exynos_drm_plane.h" |
e30655d0 | 30 | #include "exynos_drm_vidi.h" |
b73d1230 | 31 | |
8574e927 AH |
32 | /* VIDI uses fixed refresh rate of 50Hz */ |
33 | #define VIDI_REFRESH_TIME (1000 / 50) | |
34 | ||
b73d1230 ID |
35 | /* vidi has totally three virtual windows. */ |
36 | #define WINDOWS_NR 3 | |
37 | ||
ce6cb556 SP |
38 | #define ctx_from_connector(c) container_of(c, struct vidi_context, \ |
39 | connector) | |
b73d1230 | 40 | |
b73d1230 | 41 | struct vidi_context { |
2b8376c8 | 42 | struct drm_encoder encoder; |
1d50aa9c | 43 | struct platform_device *pdev; |
080be03d | 44 | struct drm_device *drm_dev; |
93bca243 | 45 | struct exynos_drm_crtc *crtc; |
ce6cb556 | 46 | struct drm_connector connector; |
7ee14cdc | 47 | struct exynos_drm_plane planes[WINDOWS_NR]; |
b73d1230 ID |
48 | struct edid *raw_edid; |
49 | unsigned int clkdiv; | |
b73d1230 | 50 | unsigned int connected; |
b73d1230 | 51 | bool suspended; |
8574e927 | 52 | struct timer_list timer; |
b73d1230 | 53 | struct mutex lock; |
080be03d | 54 | int pipe; |
b73d1230 ID |
55 | }; |
56 | ||
2b8376c8 | 57 | static inline struct vidi_context *encoder_to_vidi(struct drm_encoder *e) |
2f26bd72 | 58 | { |
cf67cc9a | 59 | return container_of(e, struct vidi_context, encoder); |
2f26bd72 AH |
60 | } |
61 | ||
b73d1230 ID |
62 | static const char fake_edid_info[] = { |
63 | 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x4c, 0x2d, 0x05, 0x05, | |
64 | 0x00, 0x00, 0x00, 0x00, 0x30, 0x12, 0x01, 0x03, 0x80, 0x10, 0x09, 0x78, | |
65 | 0x0a, 0xee, 0x91, 0xa3, 0x54, 0x4c, 0x99, 0x26, 0x0f, 0x50, 0x54, 0xbd, | |
66 | 0xee, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, | |
67 | 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x66, 0x21, 0x50, 0xb0, 0x51, 0x00, | |
68 | 0x1b, 0x30, 0x40, 0x70, 0x36, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, | |
69 | 0x01, 0x1d, 0x00, 0x72, 0x51, 0xd0, 0x1e, 0x20, 0x6e, 0x28, 0x55, 0x00, | |
70 | 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x18, | |
71 | 0x4b, 0x1a, 0x44, 0x17, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, | |
72 | 0x00, 0x00, 0x00, 0xfc, 0x00, 0x53, 0x41, 0x4d, 0x53, 0x55, 0x4e, 0x47, | |
73 | 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x01, 0xbc, 0x02, 0x03, 0x1e, 0xf1, | |
74 | 0x46, 0x84, 0x05, 0x03, 0x10, 0x20, 0x22, 0x23, 0x09, 0x07, 0x07, 0x83, | |
75 | 0x01, 0x00, 0x00, 0xe2, 0x00, 0x0f, 0x67, 0x03, 0x0c, 0x00, 0x10, 0x00, | |
76 | 0xb8, 0x2d, 0x01, 0x1d, 0x80, 0x18, 0x71, 0x1c, 0x16, 0x20, 0x58, 0x2c, | |
77 | 0x25, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x9e, 0x8c, 0x0a, 0xd0, 0x8a, | |
78 | 0x20, 0xe0, 0x2d, 0x10, 0x10, 0x3e, 0x96, 0x00, 0xa0, 0x5a, 0x00, 0x00, | |
79 | 0x00, 0x18, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38, 0x2d, 0x40, 0x58, 0x2c, | |
80 | 0x45, 0x00, 0xa0, 0x5a, 0x00, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x00, 0x00, | |
81 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
82 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
83 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | |
84 | 0x00, 0x00, 0x00, 0x06 | |
85 | }; | |
86 | ||
fbbb1e1a MS |
87 | static const uint32_t formats[] = { |
88 | DRM_FORMAT_XRGB8888, | |
89 | DRM_FORMAT_ARGB8888, | |
90 | DRM_FORMAT_NV12, | |
91 | }; | |
92 | ||
fd2d2fc2 MS |
93 | static const enum drm_plane_type vidi_win_types[WINDOWS_NR] = { |
94 | DRM_PLANE_TYPE_PRIMARY, | |
95 | DRM_PLANE_TYPE_OVERLAY, | |
96 | DRM_PLANE_TYPE_CURSOR, | |
97 | }; | |
98 | ||
93bca243 | 99 | static int vidi_enable_vblank(struct exynos_drm_crtc *crtc) |
b73d1230 | 100 | { |
93bca243 | 101 | struct vidi_context *ctx = crtc->ctx; |
b73d1230 | 102 | |
b73d1230 ID |
103 | if (ctx->suspended) |
104 | return -EPERM; | |
105 | ||
8574e927 AH |
106 | mod_timer(&ctx->timer, |
107 | jiffies + msecs_to_jiffies(VIDI_REFRESH_TIME) - 1); | |
291257cf | 108 | |
b73d1230 ID |
109 | return 0; |
110 | } | |
111 | ||
93bca243 | 112 | static void vidi_disable_vblank(struct exynos_drm_crtc *crtc) |
b73d1230 | 113 | { |
b73d1230 ID |
114 | } |
115 | ||
1e1d1393 GP |
116 | static void vidi_update_plane(struct exynos_drm_crtc *crtc, |
117 | struct exynos_drm_plane *plane) | |
b73d1230 | 118 | { |
0488f50e | 119 | struct drm_plane_state *state = plane->base.state; |
93bca243 | 120 | struct vidi_context *ctx = crtc->ctx; |
0488f50e | 121 | dma_addr_t addr; |
b73d1230 | 122 | |
b73d1230 ID |
123 | if (ctx->suspended) |
124 | return; | |
125 | ||
0488f50e MS |
126 | addr = exynos_drm_fb_dma_addr(state->fb, 0); |
127 | DRM_DEBUG_KMS("dma_addr = %pad\n", &addr); | |
b73d1230 ID |
128 | } |
129 | ||
3cecda03 | 130 | static void vidi_enable(struct exynos_drm_crtc *crtc) |
af65c804 | 131 | { |
3cecda03 | 132 | struct vidi_context *ctx = crtc->ctx; |
7ee14cdc | 133 | |
3cecda03 | 134 | mutex_lock(&ctx->lock); |
af65c804 | 135 | |
3cecda03 | 136 | ctx->suspended = false; |
af65c804 | 137 | |
3cecda03 | 138 | mutex_unlock(&ctx->lock); |
8574e927 AH |
139 | |
140 | drm_crtc_vblank_on(&crtc->base); | |
af65c804 SP |
141 | } |
142 | ||
3cecda03 | 143 | static void vidi_disable(struct exynos_drm_crtc *crtc) |
af65c804 | 144 | { |
93bca243 | 145 | struct vidi_context *ctx = crtc->ctx; |
af65c804 | 146 | |
8574e927 AH |
147 | drm_crtc_vblank_off(&crtc->base); |
148 | ||
af65c804 SP |
149 | mutex_lock(&ctx->lock); |
150 | ||
3cecda03 | 151 | ctx->suspended = true; |
af65c804 SP |
152 | |
153 | mutex_unlock(&ctx->lock); | |
154 | } | |
155 | ||
93bca243 | 156 | static int vidi_ctx_initialize(struct vidi_context *ctx, |
f37cd5e8 | 157 | struct drm_device *drm_dev) |
080be03d | 158 | { |
f37cd5e8 | 159 | struct exynos_drm_private *priv = drm_dev->dev_private; |
080be03d | 160 | |
eb88e422 | 161 | ctx->drm_dev = drm_dev; |
8a326edd | 162 | ctx->pipe = priv->pipe++; |
080be03d | 163 | |
080be03d SP |
164 | return 0; |
165 | } | |
166 | ||
f3aaf762 | 167 | static const struct exynos_drm_crtc_ops vidi_crtc_ops = { |
3cecda03 GP |
168 | .enable = vidi_enable, |
169 | .disable = vidi_disable, | |
1c6244c3 SP |
170 | .enable_vblank = vidi_enable_vblank, |
171 | .disable_vblank = vidi_disable_vblank, | |
9cc7610a | 172 | .update_plane = vidi_update_plane, |
a392276d | 173 | .atomic_flush = exynos_crtc_handle_event, |
b73d1230 ID |
174 | }; |
175 | ||
8574e927 | 176 | static void vidi_fake_vblank_timer(unsigned long arg) |
b73d1230 | 177 | { |
8574e927 | 178 | struct vidi_context *ctx = (void *)arg; |
b73d1230 | 179 | |
080be03d | 180 | if (ctx->pipe < 0) |
b73d1230 ID |
181 | return; |
182 | ||
8574e927 AH |
183 | if (drm_crtc_handle_vblank(&ctx->crtc->base)) |
184 | mod_timer(&ctx->timer, | |
185 | jiffies + msecs_to_jiffies(VIDI_REFRESH_TIME) - 1); | |
b73d1230 ID |
186 | } |
187 | ||
c5f2f0c4 | 188 | static ssize_t vidi_show_connection(struct device *dev, |
b73d1230 ID |
189 | struct device_attribute *attr, char *buf) |
190 | { | |
f01833cd | 191 | struct vidi_context *ctx = dev_get_drvdata(dev); |
b73d1230 | 192 | int rc; |
b73d1230 ID |
193 | |
194 | mutex_lock(&ctx->lock); | |
195 | ||
196 | rc = sprintf(buf, "%d\n", ctx->connected); | |
197 | ||
198 | mutex_unlock(&ctx->lock); | |
199 | ||
200 | return rc; | |
201 | } | |
202 | ||
c5f2f0c4 | 203 | static ssize_t vidi_store_connection(struct device *dev, |
b73d1230 ID |
204 | struct device_attribute *attr, |
205 | const char *buf, size_t len) | |
206 | { | |
f01833cd | 207 | struct vidi_context *ctx = dev_get_drvdata(dev); |
b73d1230 ID |
208 | int ret; |
209 | ||
b73d1230 ID |
210 | ret = kstrtoint(buf, 0, &ctx->connected); |
211 | if (ret) | |
212 | return ret; | |
213 | ||
214 | if (ctx->connected > 1) | |
215 | return -EINVAL; | |
216 | ||
d07d39df ID |
217 | /* use fake edid data for test. */ |
218 | if (!ctx->raw_edid) | |
219 | ctx->raw_edid = (struct edid *)fake_edid_info; | |
220 | ||
d7b8478a ID |
221 | /* if raw_edid isn't same as fake data then it can't be tested. */ |
222 | if (ctx->raw_edid != (struct edid *)fake_edid_info) { | |
223 | DRM_DEBUG_KMS("edid data is not fake data.\n"); | |
224 | return -EINVAL; | |
225 | } | |
226 | ||
b73d1230 ID |
227 | DRM_DEBUG_KMS("requested connection.\n"); |
228 | ||
080be03d | 229 | drm_helper_hpd_irq_event(ctx->drm_dev); |
b73d1230 ID |
230 | |
231 | return len; | |
232 | } | |
233 | ||
234 | static DEVICE_ATTR(connection, 0644, vidi_show_connection, | |
235 | vidi_store_connection); | |
236 | ||
237 | int vidi_connection_ioctl(struct drm_device *drm_dev, void *data, | |
238 | struct drm_file *file_priv) | |
239 | { | |
cf67cc9a | 240 | struct vidi_context *ctx = dev_get_drvdata(drm_dev->dev); |
b73d1230 ID |
241 | struct drm_exynos_vidi_connection *vidi = data; |
242 | ||
b73d1230 ID |
243 | if (!vidi) { |
244 | DRM_DEBUG_KMS("user data for vidi is null.\n"); | |
245 | return -EINVAL; | |
246 | } | |
247 | ||
b73d1230 ID |
248 | if (vidi->connection > 1) { |
249 | DRM_DEBUG_KMS("connection should be 0 or 1.\n"); | |
250 | return -EINVAL; | |
251 | } | |
252 | ||
b73d1230 ID |
253 | if (ctx->connected == vidi->connection) { |
254 | DRM_DEBUG_KMS("same connection request.\n"); | |
255 | return -EINVAL; | |
256 | } | |
257 | ||
d3b62dbf | 258 | if (vidi->connection) { |
c5f2f0c4 MS |
259 | struct edid *raw_edid; |
260 | ||
261 | raw_edid = (struct edid *)(unsigned long)vidi->edid; | |
e7808df1 SWK |
262 | if (!drm_edid_is_valid(raw_edid)) { |
263 | DRM_DEBUG_KMS("edid data is invalid.\n"); | |
d3b62dbf ID |
264 | return -EINVAL; |
265 | } | |
4ddc773b | 266 | ctx->raw_edid = drm_edid_duplicate(raw_edid); |
d3b62dbf ID |
267 | if (!ctx->raw_edid) { |
268 | DRM_DEBUG_KMS("failed to allocate raw_edid.\n"); | |
269 | return -ENOMEM; | |
270 | } | |
d3b62dbf ID |
271 | } else { |
272 | /* | |
273 | * with connection = 0, free raw_edid | |
274 | * only if raw edid data isn't same as fake data. | |
275 | */ | |
276 | if (ctx->raw_edid && ctx->raw_edid != | |
277 | (struct edid *)fake_edid_info) { | |
278 | kfree(ctx->raw_edid); | |
279 | ctx->raw_edid = NULL; | |
280 | } | |
281 | } | |
b73d1230 ID |
282 | |
283 | ctx->connected = vidi->connection; | |
080be03d | 284 | drm_helper_hpd_irq_event(ctx->drm_dev); |
b73d1230 ID |
285 | |
286 | return 0; | |
287 | } | |
288 | ||
ce6cb556 SP |
289 | static enum drm_connector_status vidi_detect(struct drm_connector *connector, |
290 | bool force) | |
291 | { | |
292 | struct vidi_context *ctx = ctx_from_connector(connector); | |
293 | ||
294 | /* | |
295 | * connection request would come from user side | |
296 | * to do hotplug through specific ioctl. | |
297 | */ | |
298 | return ctx->connected ? connector_status_connected : | |
299 | connector_status_disconnected; | |
300 | } | |
301 | ||
302 | static void vidi_connector_destroy(struct drm_connector *connector) | |
303 | { | |
304 | } | |
305 | ||
800ba2b5 | 306 | static const struct drm_connector_funcs vidi_connector_funcs = { |
63498e30 | 307 | .dpms = drm_atomic_helper_connector_dpms, |
ce6cb556 SP |
308 | .fill_modes = drm_helper_probe_single_connector_modes, |
309 | .detect = vidi_detect, | |
310 | .destroy = vidi_connector_destroy, | |
4ea9526b GP |
311 | .reset = drm_atomic_helper_connector_reset, |
312 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, | |
313 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, | |
ce6cb556 SP |
314 | }; |
315 | ||
316 | static int vidi_get_modes(struct drm_connector *connector) | |
317 | { | |
318 | struct vidi_context *ctx = ctx_from_connector(connector); | |
319 | struct edid *edid; | |
320 | int edid_len; | |
321 | ||
322 | /* | |
323 | * the edid data comes from user side and it would be set | |
324 | * to ctx->raw_edid through specific ioctl. | |
325 | */ | |
326 | if (!ctx->raw_edid) { | |
327 | DRM_DEBUG_KMS("raw_edid is null.\n"); | |
328 | return -EFAULT; | |
329 | } | |
330 | ||
331 | edid_len = (1 + ctx->raw_edid->extensions) * EDID_LENGTH; | |
332 | edid = kmemdup(ctx->raw_edid, edid_len, GFP_KERNEL); | |
333 | if (!edid) { | |
334 | DRM_DEBUG_KMS("failed to allocate edid\n"); | |
335 | return -ENOMEM; | |
336 | } | |
337 | ||
338 | drm_mode_connector_update_edid_property(connector, edid); | |
339 | ||
340 | return drm_add_edid_modes(connector, edid); | |
341 | } | |
342 | ||
800ba2b5 | 343 | static const struct drm_connector_helper_funcs vidi_connector_helper_funcs = { |
ce6cb556 | 344 | .get_modes = vidi_get_modes, |
ce6cb556 SP |
345 | }; |
346 | ||
2b8376c8 | 347 | static int vidi_create_connector(struct drm_encoder *encoder) |
ce6cb556 | 348 | { |
2b8376c8 | 349 | struct vidi_context *ctx = encoder_to_vidi(encoder); |
ce6cb556 SP |
350 | struct drm_connector *connector = &ctx->connector; |
351 | int ret; | |
352 | ||
ce6cb556 SP |
353 | connector->polled = DRM_CONNECTOR_POLL_HPD; |
354 | ||
355 | ret = drm_connector_init(ctx->drm_dev, connector, | |
356 | &vidi_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL); | |
357 | if (ret) { | |
358 | DRM_ERROR("Failed to initialize connector with drm\n"); | |
359 | return ret; | |
360 | } | |
361 | ||
362 | drm_connector_helper_add(connector, &vidi_connector_helper_funcs); | |
34ea3d38 | 363 | drm_connector_register(connector); |
ce6cb556 SP |
364 | drm_mode_connector_attach_encoder(connector, encoder); |
365 | ||
366 | return 0; | |
367 | } | |
368 | ||
2b8376c8 GP |
369 | static void exynos_vidi_mode_set(struct drm_encoder *encoder, |
370 | struct drm_display_mode *mode, | |
371 | struct drm_display_mode *adjusted_mode) | |
372 | { | |
373 | } | |
374 | ||
375 | static void exynos_vidi_enable(struct drm_encoder *encoder) | |
376 | { | |
377 | } | |
378 | ||
379 | static void exynos_vidi_disable(struct drm_encoder *encoder) | |
380 | { | |
381 | } | |
382 | ||
800ba2b5 | 383 | static const struct drm_encoder_helper_funcs exynos_vidi_encoder_helper_funcs = { |
2b8376c8 GP |
384 | .mode_set = exynos_vidi_mode_set, |
385 | .enable = exynos_vidi_enable, | |
386 | .disable = exynos_vidi_disable, | |
387 | }; | |
388 | ||
800ba2b5 | 389 | static const struct drm_encoder_funcs exynos_vidi_encoder_funcs = { |
2b8376c8 GP |
390 | .destroy = drm_encoder_cleanup, |
391 | }; | |
392 | ||
1d50aa9c | 393 | static int vidi_bind(struct device *dev, struct device *master, void *data) |
f37cd5e8 | 394 | { |
f01833cd | 395 | struct vidi_context *ctx = dev_get_drvdata(dev); |
1d50aa9c | 396 | struct drm_device *drm_dev = data; |
2b8376c8 | 397 | struct drm_encoder *encoder = &ctx->encoder; |
7ee14cdc | 398 | struct exynos_drm_plane *exynos_plane; |
fd2d2fc2 MS |
399 | struct exynos_drm_plane_config plane_config = { 0 }; |
400 | unsigned int i; | |
2b8376c8 | 401 | int pipe, ret; |
f37cd5e8 | 402 | |
0f04cf8d JS |
403 | vidi_ctx_initialize(ctx, drm_dev); |
404 | ||
fd2d2fc2 MS |
405 | plane_config.pixel_formats = formats; |
406 | plane_config.num_pixel_formats = ARRAY_SIZE(formats); | |
407 | ||
408 | for (i = 0; i < WINDOWS_NR; i++) { | |
409 | plane_config.zpos = i; | |
410 | plane_config.type = vidi_win_types[i]; | |
411 | ||
40bdfb0a | 412 | ret = exynos_plane_init(drm_dev, &ctx->planes[i], i, |
fd2d2fc2 | 413 | 1 << ctx->pipe, &plane_config); |
7ee14cdc GP |
414 | if (ret) |
415 | return ret; | |
416 | } | |
417 | ||
5d3d0995 | 418 | exynos_plane = &ctx->planes[DEFAULT_WIN]; |
7ee14cdc GP |
419 | ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base, |
420 | ctx->pipe, EXYNOS_DISPLAY_TYPE_VIDI, | |
93bca243 GP |
421 | &vidi_crtc_ops, ctx); |
422 | if (IS_ERR(ctx->crtc)) { | |
f37cd5e8 | 423 | DRM_ERROR("failed to create crtc.\n"); |
93bca243 | 424 | return PTR_ERR(ctx->crtc); |
f37cd5e8 ID |
425 | } |
426 | ||
2b8376c8 GP |
427 | pipe = exynos_drm_crtc_get_pipe_from_type(drm_dev, |
428 | EXYNOS_DISPLAY_TYPE_VIDI); | |
429 | if (pipe < 0) | |
430 | return pipe; | |
431 | ||
432 | encoder->possible_crtcs = 1 << pipe; | |
433 | ||
434 | DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs); | |
435 | ||
436 | drm_encoder_init(drm_dev, encoder, &exynos_vidi_encoder_funcs, | |
13a3d91f | 437 | DRM_MODE_ENCODER_TMDS, NULL); |
2b8376c8 GP |
438 | |
439 | drm_encoder_helper_add(encoder, &exynos_vidi_encoder_helper_funcs); | |
a2986e80 | 440 | |
2b8376c8 | 441 | ret = vidi_create_connector(encoder); |
f37cd5e8 | 442 | if (ret) { |
a2986e80 | 443 | DRM_ERROR("failed to create connector ret = %d\n", ret); |
2b8376c8 | 444 | drm_encoder_cleanup(encoder); |
f37cd5e8 ID |
445 | return ret; |
446 | } | |
447 | ||
448 | return 0; | |
449 | } | |
450 | ||
1d50aa9c ID |
451 | |
452 | static void vidi_unbind(struct device *dev, struct device *master, void *data) | |
453 | { | |
8574e927 AH |
454 | struct vidi_context *ctx = dev_get_drvdata(dev); |
455 | ||
456 | del_timer_sync(&ctx->timer); | |
1d50aa9c ID |
457 | } |
458 | ||
459 | static const struct component_ops vidi_component_ops = { | |
460 | .bind = vidi_bind, | |
461 | .unbind = vidi_unbind, | |
462 | }; | |
463 | ||
56550d94 | 464 | static int vidi_probe(struct platform_device *pdev) |
b73d1230 | 465 | { |
b73d1230 | 466 | struct vidi_context *ctx; |
b73d1230 ID |
467 | int ret; |
468 | ||
f37cd5e8 | 469 | ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL); |
b73d1230 ID |
470 | if (!ctx) |
471 | return -ENOMEM; | |
472 | ||
1d50aa9c ID |
473 | ctx->pdev = pdev; |
474 | ||
8574e927 | 475 | setup_timer(&ctx->timer, vidi_fake_vblank_timer, (unsigned long)ctx); |
b73d1230 | 476 | |
b73d1230 ID |
477 | mutex_init(&ctx->lock); |
478 | ||
f01833cd | 479 | platform_set_drvdata(pdev, ctx); |
b73d1230 | 480 | |
f37cd5e8 ID |
481 | ret = device_create_file(&pdev->dev, &dev_attr_connection); |
482 | if (ret < 0) { | |
1d50aa9c | 483 | DRM_ERROR("failed to create connection sysfs.\n"); |
86650408 | 484 | return ret; |
f37cd5e8 | 485 | } |
b73d1230 | 486 | |
1d50aa9c ID |
487 | ret = component_add(&pdev->dev, &vidi_component_ops); |
488 | if (ret) | |
489 | goto err_remove_file; | |
490 | ||
491 | return ret; | |
492 | ||
493 | err_remove_file: | |
494 | device_remove_file(&pdev->dev, &dev_attr_connection); | |
1d50aa9c ID |
495 | |
496 | return ret; | |
b73d1230 ID |
497 | } |
498 | ||
56550d94 | 499 | static int vidi_remove(struct platform_device *pdev) |
b73d1230 | 500 | { |
f01833cd | 501 | struct vidi_context *ctx = platform_get_drvdata(pdev); |
b73d1230 | 502 | |
d3b62dbf ID |
503 | if (ctx->raw_edid != (struct edid *)fake_edid_info) { |
504 | kfree(ctx->raw_edid); | |
505 | ctx->raw_edid = NULL; | |
f37cd5e8 ID |
506 | |
507 | return -EINVAL; | |
d3b62dbf ID |
508 | } |
509 | ||
1d50aa9c | 510 | component_del(&pdev->dev, &vidi_component_ops); |
1d50aa9c | 511 | |
b73d1230 ID |
512 | return 0; |
513 | } | |
514 | ||
b73d1230 ID |
515 | struct platform_driver vidi_driver = { |
516 | .probe = vidi_probe, | |
56550d94 | 517 | .remove = vidi_remove, |
b73d1230 ID |
518 | .driver = { |
519 | .name = "exynos-drm-vidi", | |
520 | .owner = THIS_MODULE, | |
b73d1230 ID |
521 | }, |
522 | }; |