Commit | Line | Data |
---|---|---|
f326f799 SH |
1 | /* |
2 | * i.MX IPUv3 Graphics driver | |
3 | * | |
4 | * Copyright (C) 2011 Sascha Hauer, Pengutronix | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
f326f799 | 14 | */ |
17b5001b | 15 | #include <linux/component.h> |
f326f799 SH |
16 | #include <linux/module.h> |
17 | #include <linux/export.h> | |
18 | #include <linux/device.h> | |
19 | #include <linux/platform_device.h> | |
20 | #include <drm/drmP.h> | |
ae2531ab | 21 | #include <drm/drm_atomic.h> |
255c35f8 | 22 | #include <drm/drm_atomic_helper.h> |
f326f799 SH |
23 | #include <drm/drm_crtc_helper.h> |
24 | #include <linux/fb.h> | |
25 | #include <linux/clk.h> | |
b8d181e4 | 26 | #include <linux/errno.h> |
f326f799 SH |
27 | #include <drm/drm_gem_cma_helper.h> |
28 | #include <drm/drm_fb_cma_helper.h> | |
29 | ||
39b9004d | 30 | #include <video/imx-ipu-v3.h> |
f326f799 | 31 | #include "imx-drm.h" |
b8d181e4 | 32 | #include "ipuv3-plane.h" |
f326f799 SH |
33 | |
34 | #define DRIVER_DESC "i.MX IPUv3 Graphics" | |
35 | ||
f326f799 | 36 | struct ipu_crtc { |
f326f799 SH |
37 | struct device *dev; |
38 | struct drm_crtc base; | |
39 | struct imx_drm_crtc *imx_crtc; | |
b8d181e4 PZ |
40 | |
41 | /* plane[0] is the full plane, plane[1] is the partial plane */ | |
42 | struct ipu_plane *plane[2]; | |
43 | ||
f326f799 | 44 | struct ipu_dc *dc; |
f326f799 | 45 | struct ipu_di *di; |
f326f799 | 46 | int irq; |
f326f799 SH |
47 | }; |
48 | ||
49 | #define to_ipu_crtc(x) container_of(x, struct ipu_crtc, base) | |
50 | ||
f6e396e5 | 51 | static void ipu_crtc_enable(struct drm_crtc *crtc) |
f326f799 | 52 | { |
f6e396e5 | 53 | struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc); |
1e6d486b PZ |
54 | struct ipu_soc *ipu = dev_get_drvdata(ipu_crtc->dev->parent); |
55 | ||
1e6d486b | 56 | ipu_dc_enable(ipu); |
c115edb8 PZ |
57 | ipu_dc_enable_channel(ipu_crtc->dc); |
58 | ipu_di_enable(ipu_crtc->di); | |
f326f799 SH |
59 | } |
60 | ||
f6e396e5 | 61 | static void ipu_crtc_disable(struct drm_crtc *crtc) |
f326f799 | 62 | { |
f6e396e5 | 63 | struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc); |
1e6d486b | 64 | struct ipu_soc *ipu = dev_get_drvdata(ipu_crtc->dev->parent); |
f326f799 | 65 | |
f326f799 | 66 | ipu_dc_disable_channel(ipu_crtc->dc); |
f326f799 | 67 | ipu_di_disable(ipu_crtc->di); |
1e6d486b | 68 | ipu_dc_disable(ipu); |
33f14235 | 69 | |
5f2f9115 LY |
70 | spin_lock_irq(&crtc->dev->event_lock); |
71 | if (crtc->state->event) { | |
72 | drm_crtc_send_vblank_event(crtc, crtc->state->event); | |
73 | crtc->state->event = NULL; | |
74 | } | |
75 | spin_unlock_irq(&crtc->dev->event_lock); | |
f326f799 SH |
76 | } |
77 | ||
f326f799 | 78 | static const struct drm_crtc_funcs ipu_crtc_funcs = { |
5f2f9115 | 79 | .set_config = drm_atomic_helper_set_config, |
f326f799 | 80 | .destroy = drm_crtc_cleanup, |
5f2f9115 | 81 | .page_flip = drm_atomic_helper_page_flip, |
255c35f8 LY |
82 | .reset = drm_atomic_helper_crtc_reset, |
83 | .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state, | |
84 | .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state, | |
f326f799 SH |
85 | }; |
86 | ||
f326f799 SH |
87 | static irqreturn_t ipu_irq_handler(int irq, void *dev_id) |
88 | { | |
89 | struct ipu_crtc *ipu_crtc = dev_id; | |
90 | ||
91 | imx_drm_handle_vblank(ipu_crtc->imx_crtc); | |
92 | ||
f326f799 SH |
93 | return IRQ_HANDLED; |
94 | } | |
95 | ||
96 | static bool ipu_crtc_mode_fixup(struct drm_crtc *crtc, | |
97 | const struct drm_display_mode *mode, | |
98 | struct drm_display_mode *adjusted_mode) | |
99 | { | |
0c460a55 SL |
100 | struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc); |
101 | struct videomode vm; | |
102 | int ret; | |
103 | ||
104 | drm_display_mode_to_videomode(adjusted_mode, &vm); | |
105 | ||
106 | ret = ipu_di_adjust_videomode(ipu_crtc->di, &vm); | |
107 | if (ret) | |
108 | return false; | |
109 | ||
33f14235 LY |
110 | if ((vm.vsync_len == 0) || (vm.hsync_len == 0)) |
111 | return false; | |
112 | ||
0c460a55 SL |
113 | drm_display_mode_from_videomode(&vm, adjusted_mode); |
114 | ||
f326f799 SH |
115 | return true; |
116 | } | |
117 | ||
33f14235 LY |
118 | static int ipu_crtc_atomic_check(struct drm_crtc *crtc, |
119 | struct drm_crtc_state *state) | |
120 | { | |
5f2f9115 LY |
121 | u32 primary_plane_mask = 1 << drm_plane_index(crtc->primary); |
122 | ||
123 | if (state->active && (primary_plane_mask & state->plane_mask) == 0) | |
124 | return -EINVAL; | |
125 | ||
33f14235 LY |
126 | return 0; |
127 | } | |
128 | ||
5f2f9115 LY |
129 | static void ipu_crtc_atomic_begin(struct drm_crtc *crtc, |
130 | struct drm_crtc_state *old_crtc_state) | |
131 | { | |
132 | spin_lock_irq(&crtc->dev->event_lock); | |
133 | if (crtc->state->event) { | |
134 | WARN_ON(drm_crtc_vblank_get(crtc)); | |
135 | drm_crtc_arm_vblank_event(crtc, crtc->state->event); | |
136 | crtc->state->event = NULL; | |
137 | } | |
138 | spin_unlock_irq(&crtc->dev->event_lock); | |
139 | } | |
140 | ||
33f14235 LY |
141 | static void ipu_crtc_mode_set_nofb(struct drm_crtc *crtc) |
142 | { | |
143 | struct drm_device *dev = crtc->dev; | |
144 | struct drm_encoder *encoder; | |
032003c5 | 145 | struct imx_drm_encoder *imx_encoder = NULL; |
33f14235 LY |
146 | struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc); |
147 | struct drm_display_mode *mode = &crtc->state->adjusted_mode; | |
148 | struct ipu_di_signal_cfg sig_cfg = {}; | |
149 | unsigned long encoder_types = 0; | |
150 | ||
151 | dev_dbg(ipu_crtc->dev, "%s: mode->hdisplay: %d\n", __func__, | |
152 | mode->hdisplay); | |
153 | dev_dbg(ipu_crtc->dev, "%s: mode->vdisplay: %d\n", __func__, | |
154 | mode->vdisplay); | |
155 | ||
032003c5 LY |
156 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
157 | if (encoder->crtc == crtc) { | |
33f14235 | 158 | encoder_types |= BIT(encoder->encoder_type); |
032003c5 LY |
159 | imx_encoder = enc_to_imx_enc(encoder); |
160 | } | |
161 | } | |
33f14235 LY |
162 | |
163 | dev_dbg(ipu_crtc->dev, "%s: attached to encoder types 0x%lx\n", | |
164 | __func__, encoder_types); | |
165 | ||
166 | /* | |
167 | * If we have DAC or LDB, then we need the IPU DI clock to be | |
168 | * the same as the LDB DI clock. For TVDAC, derive the IPU DI | |
169 | * clock from 27 MHz TVE_DI clock, but allow to divide it. | |
170 | */ | |
171 | if (encoder_types & (BIT(DRM_MODE_ENCODER_DAC) | | |
172 | BIT(DRM_MODE_ENCODER_LVDS))) | |
173 | sig_cfg.clkflags = IPU_DI_CLKMODE_SYNC | IPU_DI_CLKMODE_EXT; | |
174 | else if (encoder_types & BIT(DRM_MODE_ENCODER_TVDAC)) | |
175 | sig_cfg.clkflags = IPU_DI_CLKMODE_EXT; | |
176 | else | |
177 | sig_cfg.clkflags = 0; | |
178 | ||
032003c5 | 179 | sig_cfg.enable_pol = !(imx_encoder->bus_flags & DRM_BUS_FLAG_DE_LOW); |
33f14235 | 180 | /* Default to driving pixel data on negative clock edges */ |
032003c5 | 181 | sig_cfg.clk_pol = !!(imx_encoder->bus_flags & |
33f14235 | 182 | DRM_BUS_FLAG_PIXDATA_POSEDGE); |
032003c5 | 183 | sig_cfg.bus_format = imx_encoder->bus_format; |
33f14235 | 184 | sig_cfg.v_to_h_sync = 0; |
032003c5 LY |
185 | sig_cfg.hsync_pin = imx_encoder->di_hsync_pin; |
186 | sig_cfg.vsync_pin = imx_encoder->di_vsync_pin; | |
33f14235 LY |
187 | |
188 | drm_display_mode_to_videomode(mode, &sig_cfg.mode); | |
189 | ||
190 | ipu_dc_init_sync(ipu_crtc->dc, ipu_crtc->di, | |
191 | mode->flags & DRM_MODE_FLAG_INTERLACE, | |
032003c5 | 192 | imx_encoder->bus_format, mode->hdisplay); |
33f14235 | 193 | ipu_di_init_sync_panel(ipu_crtc->di, &sig_cfg); |
f326f799 SH |
194 | } |
195 | ||
7ae847dd | 196 | static const struct drm_crtc_helper_funcs ipu_helper_funcs = { |
f326f799 | 197 | .mode_fixup = ipu_crtc_mode_fixup, |
33f14235 | 198 | .mode_set_nofb = ipu_crtc_mode_set_nofb, |
33f14235 | 199 | .atomic_check = ipu_crtc_atomic_check, |
5f2f9115 | 200 | .atomic_begin = ipu_crtc_atomic_begin, |
f6e396e5 LY |
201 | .disable = ipu_crtc_disable, |
202 | .enable = ipu_crtc_enable, | |
f326f799 SH |
203 | }; |
204 | ||
205 | static int ipu_enable_vblank(struct drm_crtc *crtc) | |
206 | { | |
411b0336 LS |
207 | struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc); |
208 | ||
209 | enable_irq(ipu_crtc->irq); | |
210 | ||
f326f799 SH |
211 | return 0; |
212 | } | |
213 | ||
214 | static void ipu_disable_vblank(struct drm_crtc *crtc) | |
215 | { | |
411b0336 LS |
216 | struct ipu_crtc *ipu_crtc = to_ipu_crtc(crtc); |
217 | ||
218 | disable_irq_nosync(ipu_crtc->irq); | |
f326f799 SH |
219 | } |
220 | ||
f326f799 SH |
221 | static const struct imx_drm_crtc_helper_funcs ipu_crtc_helper_funcs = { |
222 | .enable_vblank = ipu_enable_vblank, | |
223 | .disable_vblank = ipu_disable_vblank, | |
f326f799 SH |
224 | .crtc_funcs = &ipu_crtc_funcs, |
225 | .crtc_helper_funcs = &ipu_helper_funcs, | |
226 | }; | |
227 | ||
228 | static void ipu_put_resources(struct ipu_crtc *ipu_crtc) | |
229 | { | |
b8d181e4 PZ |
230 | if (!IS_ERR_OR_NULL(ipu_crtc->dc)) |
231 | ipu_dc_put(ipu_crtc->dc); | |
f326f799 SH |
232 | if (!IS_ERR_OR_NULL(ipu_crtc->di)) |
233 | ipu_di_put(ipu_crtc->di); | |
234 | } | |
235 | ||
236 | static int ipu_get_resources(struct ipu_crtc *ipu_crtc, | |
237 | struct ipu_client_platformdata *pdata) | |
238 | { | |
239 | struct ipu_soc *ipu = dev_get_drvdata(ipu_crtc->dev->parent); | |
240 | int ret; | |
241 | ||
f326f799 SH |
242 | ipu_crtc->dc = ipu_dc_get(ipu, pdata->dc); |
243 | if (IS_ERR(ipu_crtc->dc)) { | |
244 | ret = PTR_ERR(ipu_crtc->dc); | |
245 | goto err_out; | |
246 | } | |
247 | ||
f326f799 SH |
248 | ipu_crtc->di = ipu_di_get(ipu, pdata->di); |
249 | if (IS_ERR(ipu_crtc->di)) { | |
250 | ret = PTR_ERR(ipu_crtc->di); | |
251 | goto err_out; | |
252 | } | |
253 | ||
f326f799 SH |
254 | return 0; |
255 | err_out: | |
256 | ipu_put_resources(ipu_crtc); | |
257 | ||
258 | return ret; | |
259 | } | |
260 | ||
261 | static int ipu_crtc_init(struct ipu_crtc *ipu_crtc, | |
32266b45 | 262 | struct ipu_client_platformdata *pdata, struct drm_device *drm) |
f326f799 | 263 | { |
47b1be5c | 264 | struct ipu_soc *ipu = dev_get_drvdata(ipu_crtc->dev->parent); |
b8d181e4 | 265 | int dp = -EINVAL; |
f326f799 SH |
266 | int ret; |
267 | ||
268 | ret = ipu_get_resources(ipu_crtc, pdata); | |
269 | if (ret) { | |
270 | dev_err(ipu_crtc->dev, "getting resources failed with %d.\n", | |
271 | ret); | |
272 | return ret; | |
273 | } | |
274 | ||
43895599 PZ |
275 | if (pdata->dp >= 0) |
276 | dp = IPU_DP_FLOW_SYNC_BG; | |
277 | ipu_crtc->plane[0] = ipu_plane_init(drm, ipu, pdata->dma[0], dp, 0, | |
278 | DRM_PLANE_TYPE_PRIMARY); | |
a7ed3c2b LY |
279 | if (IS_ERR(ipu_crtc->plane[0])) { |
280 | ret = PTR_ERR(ipu_crtc->plane[0]); | |
281 | goto err_put_resources; | |
282 | } | |
43895599 | 283 | |
655b43cc | 284 | ret = imx_drm_add_crtc(drm, &ipu_crtc->base, &ipu_crtc->imx_crtc, |
43895599 | 285 | &ipu_crtc->plane[0]->base, &ipu_crtc_helper_funcs, |
310944d1 | 286 | pdata->of_node); |
f326f799 SH |
287 | if (ret) { |
288 | dev_err(ipu_crtc->dev, "adding crtc failed with %d.\n", ret); | |
289 | goto err_put_resources; | |
290 | } | |
291 | ||
b8d181e4 PZ |
292 | ret = ipu_plane_get_resources(ipu_crtc->plane[0]); |
293 | if (ret) { | |
294 | dev_err(ipu_crtc->dev, "getting plane 0 resources failed with %d.\n", | |
295 | ret); | |
296 | goto err_remove_crtc; | |
297 | } | |
298 | ||
299 | /* If this crtc is using the DP, add an overlay plane */ | |
300 | if (pdata->dp >= 0 && pdata->dma[1] > 0) { | |
43895599 PZ |
301 | ipu_crtc->plane[1] = ipu_plane_init(drm, ipu, pdata->dma[1], |
302 | IPU_DP_FLOW_SYNC_FG, | |
303 | drm_crtc_mask(&ipu_crtc->base), | |
304 | DRM_PLANE_TYPE_OVERLAY); | |
33f14235 | 305 | if (IS_ERR(ipu_crtc->plane[1])) { |
b8d181e4 | 306 | ipu_crtc->plane[1] = NULL; |
33f14235 LY |
307 | } else { |
308 | ret = ipu_plane_get_resources(ipu_crtc->plane[1]); | |
309 | if (ret) { | |
310 | dev_err(ipu_crtc->dev, "getting plane 1 " | |
311 | "resources failed with %d.\n", ret); | |
312 | goto err_put_plane0_res; | |
313 | } | |
314 | } | |
b8d181e4 PZ |
315 | } |
316 | ||
317 | ipu_crtc->irq = ipu_plane_irq(ipu_crtc->plane[0]); | |
47b1be5c PZ |
318 | ret = devm_request_irq(ipu_crtc->dev, ipu_crtc->irq, ipu_irq_handler, 0, |
319 | "imx_drm", ipu_crtc); | |
320 | if (ret < 0) { | |
321 | dev_err(ipu_crtc->dev, "irq request failed with %d.\n", ret); | |
33f14235 | 322 | goto err_put_plane1_res; |
47b1be5c | 323 | } |
411b0336 LS |
324 | /* Only enable IRQ when we actually need it to trigger work. */ |
325 | disable_irq(ipu_crtc->irq); | |
47b1be5c | 326 | |
f326f799 SH |
327 | return 0; |
328 | ||
33f14235 LY |
329 | err_put_plane1_res: |
330 | if (ipu_crtc->plane[1]) | |
331 | ipu_plane_put_resources(ipu_crtc->plane[1]); | |
332 | err_put_plane0_res: | |
b8d181e4 PZ |
333 | ipu_plane_put_resources(ipu_crtc->plane[0]); |
334 | err_remove_crtc: | |
335 | imx_drm_remove_crtc(ipu_crtc->imx_crtc); | |
f326f799 SH |
336 | err_put_resources: |
337 | ipu_put_resources(ipu_crtc); | |
338 | ||
339 | return ret; | |
340 | } | |
341 | ||
17b5001b | 342 | static int ipu_drm_bind(struct device *dev, struct device *master, void *data) |
f326f799 | 343 | { |
17b5001b | 344 | struct ipu_client_platformdata *pdata = dev->platform_data; |
32266b45 | 345 | struct drm_device *drm = data; |
f326f799 SH |
346 | struct ipu_crtc *ipu_crtc; |
347 | int ret; | |
348 | ||
17b5001b | 349 | ipu_crtc = devm_kzalloc(dev, sizeof(*ipu_crtc), GFP_KERNEL); |
f326f799 SH |
350 | if (!ipu_crtc) |
351 | return -ENOMEM; | |
352 | ||
17b5001b | 353 | ipu_crtc->dev = dev; |
f326f799 | 354 | |
32266b45 | 355 | ret = ipu_crtc_init(ipu_crtc, pdata, drm); |
9a8f3f44 LW |
356 | if (ret) |
357 | return ret; | |
f326f799 | 358 | |
17b5001b | 359 | dev_set_drvdata(dev, ipu_crtc); |
f326f799 SH |
360 | |
361 | return 0; | |
362 | } | |
363 | ||
17b5001b RK |
364 | static void ipu_drm_unbind(struct device *dev, struct device *master, |
365 | void *data) | |
f326f799 | 366 | { |
17b5001b | 367 | struct ipu_crtc *ipu_crtc = dev_get_drvdata(dev); |
f326f799 SH |
368 | |
369 | imx_drm_remove_crtc(ipu_crtc->imx_crtc); | |
370 | ||
371 | ipu_put_resources(ipu_crtc); | |
33f14235 LY |
372 | if (ipu_crtc->plane[1]) |
373 | ipu_plane_put_resources(ipu_crtc->plane[1]); | |
374 | ipu_plane_put_resources(ipu_crtc->plane[0]); | |
17b5001b RK |
375 | } |
376 | ||
377 | static const struct component_ops ipu_crtc_ops = { | |
378 | .bind = ipu_drm_bind, | |
379 | .unbind = ipu_drm_unbind, | |
380 | }; | |
f326f799 | 381 | |
17b5001b RK |
382 | static int ipu_drm_probe(struct platform_device *pdev) |
383 | { | |
655b43cc | 384 | struct device *dev = &pdev->dev; |
17b5001b RK |
385 | int ret; |
386 | ||
655b43cc | 387 | if (!dev->platform_data) |
17b5001b RK |
388 | return -EINVAL; |
389 | ||
655b43cc | 390 | ret = dma_set_coherent_mask(dev, DMA_BIT_MASK(32)); |
17b5001b RK |
391 | if (ret) |
392 | return ret; | |
393 | ||
655b43cc | 394 | return component_add(dev, &ipu_crtc_ops); |
17b5001b RK |
395 | } |
396 | ||
397 | static int ipu_drm_remove(struct platform_device *pdev) | |
398 | { | |
399 | component_del(&pdev->dev, &ipu_crtc_ops); | |
f326f799 SH |
400 | return 0; |
401 | } | |
402 | ||
403 | static struct platform_driver ipu_drm_driver = { | |
404 | .driver = { | |
405 | .name = "imx-ipuv3-crtc", | |
406 | }, | |
407 | .probe = ipu_drm_probe, | |
99c28f10 | 408 | .remove = ipu_drm_remove, |
f326f799 SH |
409 | }; |
410 | module_platform_driver(ipu_drm_driver); | |
411 | ||
412 | MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); | |
413 | MODULE_DESCRIPTION(DRIVER_DESC); | |
414 | MODULE_LICENSE("GPL"); | |
ce9c1cef | 415 | MODULE_ALIAS("platform:imx-ipuv3-crtc"); |