2 * i.MX IPUv3 Graphics driver
4 * Copyright (C) 2011 Sascha Hauer, Pengutronix
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.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
20 #include <linux/component.h>
21 #include <linux/module.h>
22 #include <linux/export.h>
23 #include <linux/device.h>
24 #include <linux/platform_device.h>
26 #include <drm/drm_crtc_helper.h>
28 #include <linux/clk.h>
29 #include <linux/errno.h>
30 #include <drm/drm_gem_cma_helper.h>
31 #include <drm/drm_fb_cma_helper.h>
33 #include "ipu-v3/imx-ipu-v3.h"
35 #include "ipuv3-plane.h"
37 #define DRIVER_DESC "i.MX IPUv3 Graphics"
42 struct imx_drm_crtc
*imx_crtc
;
44 /* plane[0] is the full plane, plane[1] is the partial plane */
45 struct ipu_plane
*plane
[2];
50 struct drm_pending_vblank_event
*page_flip_event
;
51 struct drm_framebuffer
*newfb
;
53 u32 interface_pix_fmt
;
54 unsigned long di_clkflags
;
59 #define to_ipu_crtc(x) container_of(x, struct ipu_crtc, base)
61 static void ipu_fb_enable(struct ipu_crtc
*ipu_crtc
)
63 if (ipu_crtc
->enabled
)
66 ipu_di_enable(ipu_crtc
->di
);
67 ipu_dc_enable_channel(ipu_crtc
->dc
);
68 ipu_plane_enable(ipu_crtc
->plane
[0]);
70 ipu_crtc
->enabled
= 1;
73 static void ipu_fb_disable(struct ipu_crtc
*ipu_crtc
)
75 if (!ipu_crtc
->enabled
)
78 ipu_plane_disable(ipu_crtc
->plane
[0]);
79 ipu_dc_disable_channel(ipu_crtc
->dc
);
80 ipu_di_disable(ipu_crtc
->di
);
82 ipu_crtc
->enabled
= 0;
85 static void ipu_crtc_dpms(struct drm_crtc
*crtc
, int mode
)
87 struct ipu_crtc
*ipu_crtc
= to_ipu_crtc(crtc
);
89 dev_dbg(ipu_crtc
->dev
, "%s mode: %d\n", __func__
, mode
);
92 case DRM_MODE_DPMS_ON
:
93 ipu_fb_enable(ipu_crtc
);
95 case DRM_MODE_DPMS_STANDBY
:
96 case DRM_MODE_DPMS_SUSPEND
:
97 case DRM_MODE_DPMS_OFF
:
98 ipu_fb_disable(ipu_crtc
);
103 static int ipu_page_flip(struct drm_crtc
*crtc
,
104 struct drm_framebuffer
*fb
,
105 struct drm_pending_vblank_event
*event
,
106 uint32_t page_flip_flags
)
108 struct ipu_crtc
*ipu_crtc
= to_ipu_crtc(crtc
);
114 ret
= imx_drm_crtc_vblank_get(ipu_crtc
->imx_crtc
);
116 dev_dbg(ipu_crtc
->dev
, "failed to acquire vblank counter\n");
117 list_del(&event
->base
.link
);
122 ipu_crtc
->newfb
= fb
;
123 ipu_crtc
->page_flip_event
= event
;
129 static const struct drm_crtc_funcs ipu_crtc_funcs
= {
130 .set_config
= drm_crtc_helper_set_config
,
131 .destroy
= drm_crtc_cleanup
,
132 .page_flip
= ipu_page_flip
,
135 static int ipu_crtc_mode_set(struct drm_crtc
*crtc
,
136 struct drm_display_mode
*orig_mode
,
137 struct drm_display_mode
*mode
,
139 struct drm_framebuffer
*old_fb
)
141 struct ipu_crtc
*ipu_crtc
= to_ipu_crtc(crtc
);
143 struct ipu_di_signal_cfg sig_cfg
= {};
146 dev_dbg(ipu_crtc
->dev
, "%s: mode->hdisplay: %d\n", __func__
,
148 dev_dbg(ipu_crtc
->dev
, "%s: mode->vdisplay: %d\n", __func__
,
151 out_pixel_fmt
= ipu_crtc
->interface_pix_fmt
;
153 if (mode
->flags
& DRM_MODE_FLAG_INTERLACE
)
154 sig_cfg
.interlaced
= 1;
155 if (mode
->flags
& DRM_MODE_FLAG_PHSYNC
)
156 sig_cfg
.Hsync_pol
= 1;
157 if (mode
->flags
& DRM_MODE_FLAG_PVSYNC
)
158 sig_cfg
.Vsync_pol
= 1;
160 sig_cfg
.enable_pol
= 1;
162 sig_cfg
.width
= mode
->hdisplay
;
163 sig_cfg
.height
= mode
->vdisplay
;
164 sig_cfg
.pixel_fmt
= out_pixel_fmt
;
165 sig_cfg
.h_start_width
= mode
->htotal
- mode
->hsync_end
;
166 sig_cfg
.h_sync_width
= mode
->hsync_end
- mode
->hsync_start
;
167 sig_cfg
.h_end_width
= mode
->hsync_start
- mode
->hdisplay
;
169 sig_cfg
.v_start_width
= mode
->vtotal
- mode
->vsync_end
;
170 sig_cfg
.v_sync_width
= mode
->vsync_end
- mode
->vsync_start
;
171 sig_cfg
.v_end_width
= mode
->vsync_start
- mode
->vdisplay
;
172 sig_cfg
.pixelclock
= mode
->clock
* 1000;
173 sig_cfg
.clkflags
= ipu_crtc
->di_clkflags
;
175 sig_cfg
.v_to_h_sync
= 0;
177 sig_cfg
.hsync_pin
= ipu_crtc
->di_hsync_pin
;
178 sig_cfg
.vsync_pin
= ipu_crtc
->di_vsync_pin
;
180 ret
= ipu_dc_init_sync(ipu_crtc
->dc
, ipu_crtc
->di
, sig_cfg
.interlaced
,
181 out_pixel_fmt
, mode
->hdisplay
);
183 dev_err(ipu_crtc
->dev
,
184 "initializing display controller failed with %d\n",
189 ret
= ipu_di_init_sync_panel(ipu_crtc
->di
, &sig_cfg
);
191 dev_err(ipu_crtc
->dev
,
192 "initializing panel failed with %d\n", ret
);
196 return ipu_plane_mode_set(ipu_crtc
->plane
[0], crtc
, mode
, crtc
->fb
,
197 0, 0, mode
->hdisplay
, mode
->vdisplay
,
198 x
, y
, mode
->hdisplay
, mode
->vdisplay
);
201 static void ipu_crtc_handle_pageflip(struct ipu_crtc
*ipu_crtc
)
204 struct drm_device
*drm
= ipu_crtc
->base
.dev
;
206 spin_lock_irqsave(&drm
->event_lock
, flags
);
207 if (ipu_crtc
->page_flip_event
)
208 drm_send_vblank_event(drm
, -1, ipu_crtc
->page_flip_event
);
209 ipu_crtc
->page_flip_event
= NULL
;
210 imx_drm_crtc_vblank_put(ipu_crtc
->imx_crtc
);
211 spin_unlock_irqrestore(&drm
->event_lock
, flags
);
214 static irqreturn_t
ipu_irq_handler(int irq
, void *dev_id
)
216 struct ipu_crtc
*ipu_crtc
= dev_id
;
218 imx_drm_handle_vblank(ipu_crtc
->imx_crtc
);
220 if (ipu_crtc
->newfb
) {
221 ipu_crtc
->newfb
= NULL
;
222 ipu_plane_set_base(ipu_crtc
->plane
[0], ipu_crtc
->base
.fb
,
223 ipu_crtc
->plane
[0]->x
, ipu_crtc
->plane
[0]->y
);
224 ipu_crtc_handle_pageflip(ipu_crtc
);
230 static bool ipu_crtc_mode_fixup(struct drm_crtc
*crtc
,
231 const struct drm_display_mode
*mode
,
232 struct drm_display_mode
*adjusted_mode
)
237 static void ipu_crtc_prepare(struct drm_crtc
*crtc
)
239 struct ipu_crtc
*ipu_crtc
= to_ipu_crtc(crtc
);
241 ipu_fb_disable(ipu_crtc
);
244 static void ipu_crtc_commit(struct drm_crtc
*crtc
)
246 struct ipu_crtc
*ipu_crtc
= to_ipu_crtc(crtc
);
248 ipu_fb_enable(ipu_crtc
);
251 static struct drm_crtc_helper_funcs ipu_helper_funcs
= {
252 .dpms
= ipu_crtc_dpms
,
253 .mode_fixup
= ipu_crtc_mode_fixup
,
254 .mode_set
= ipu_crtc_mode_set
,
255 .prepare
= ipu_crtc_prepare
,
256 .commit
= ipu_crtc_commit
,
259 static int ipu_enable_vblank(struct drm_crtc
*crtc
)
264 static void ipu_disable_vblank(struct drm_crtc
*crtc
)
266 struct ipu_crtc
*ipu_crtc
= to_ipu_crtc(crtc
);
268 ipu_crtc
->page_flip_event
= NULL
;
269 ipu_crtc
->newfb
= NULL
;
272 static int ipu_set_interface_pix_fmt(struct drm_crtc
*crtc
, u32 encoder_type
,
273 u32 pixfmt
, int hsync_pin
, int vsync_pin
)
275 struct ipu_crtc
*ipu_crtc
= to_ipu_crtc(crtc
);
277 ipu_crtc
->interface_pix_fmt
= pixfmt
;
278 ipu_crtc
->di_hsync_pin
= hsync_pin
;
279 ipu_crtc
->di_vsync_pin
= vsync_pin
;
281 switch (encoder_type
) {
282 case DRM_MODE_ENCODER_DAC
:
283 case DRM_MODE_ENCODER_TVDAC
:
284 case DRM_MODE_ENCODER_LVDS
:
285 ipu_crtc
->di_clkflags
= IPU_DI_CLKMODE_SYNC
|
288 case DRM_MODE_ENCODER_TMDS
:
289 case DRM_MODE_ENCODER_NONE
:
290 ipu_crtc
->di_clkflags
= 0;
297 static const struct imx_drm_crtc_helper_funcs ipu_crtc_helper_funcs
= {
298 .enable_vblank
= ipu_enable_vblank
,
299 .disable_vblank
= ipu_disable_vblank
,
300 .set_interface_pix_fmt
= ipu_set_interface_pix_fmt
,
301 .crtc_funcs
= &ipu_crtc_funcs
,
302 .crtc_helper_funcs
= &ipu_helper_funcs
,
305 static void ipu_put_resources(struct ipu_crtc
*ipu_crtc
)
307 if (!IS_ERR_OR_NULL(ipu_crtc
->dc
))
308 ipu_dc_put(ipu_crtc
->dc
);
309 if (!IS_ERR_OR_NULL(ipu_crtc
->di
))
310 ipu_di_put(ipu_crtc
->di
);
313 static int ipu_get_resources(struct ipu_crtc
*ipu_crtc
,
314 struct ipu_client_platformdata
*pdata
)
316 struct ipu_soc
*ipu
= dev_get_drvdata(ipu_crtc
->dev
->parent
);
319 ipu_crtc
->dc
= ipu_dc_get(ipu
, pdata
->dc
);
320 if (IS_ERR(ipu_crtc
->dc
)) {
321 ret
= PTR_ERR(ipu_crtc
->dc
);
325 ipu_crtc
->di
= ipu_di_get(ipu
, pdata
->di
);
326 if (IS_ERR(ipu_crtc
->di
)) {
327 ret
= PTR_ERR(ipu_crtc
->di
);
333 ipu_put_resources(ipu_crtc
);
338 static int ipu_crtc_init(struct ipu_crtc
*ipu_crtc
,
339 struct ipu_client_platformdata
*pdata
)
341 struct ipu_soc
*ipu
= dev_get_drvdata(ipu_crtc
->dev
->parent
);
346 ret
= ipu_get_resources(ipu_crtc
, pdata
);
348 dev_err(ipu_crtc
->dev
, "getting resources failed with %d.\n",
353 ret
= imx_drm_add_crtc(&ipu_crtc
->base
,
355 &ipu_crtc_helper_funcs
, THIS_MODULE
,
356 ipu_crtc
->dev
->parent
->of_node
, pdata
->di
);
358 dev_err(ipu_crtc
->dev
, "adding crtc failed with %d.\n", ret
);
359 goto err_put_resources
;
363 dp
= IPU_DP_FLOW_SYNC_BG
;
364 id
= imx_drm_crtc_id(ipu_crtc
->imx_crtc
);
365 ipu_crtc
->plane
[0] = ipu_plane_init(ipu_crtc
->base
.dev
, ipu
,
366 pdata
->dma
[0], dp
, BIT(id
), true);
367 ret
= ipu_plane_get_resources(ipu_crtc
->plane
[0]);
369 dev_err(ipu_crtc
->dev
, "getting plane 0 resources failed with %d.\n",
371 goto err_remove_crtc
;
374 /* If this crtc is using the DP, add an overlay plane */
375 if (pdata
->dp
>= 0 && pdata
->dma
[1] > 0) {
376 ipu_crtc
->plane
[1] = ipu_plane_init(ipu_crtc
->base
.dev
, ipu
,
380 if (IS_ERR(ipu_crtc
->plane
[1]))
381 ipu_crtc
->plane
[1] = NULL
;
384 ipu_crtc
->irq
= ipu_plane_irq(ipu_crtc
->plane
[0]);
385 ret
= devm_request_irq(ipu_crtc
->dev
, ipu_crtc
->irq
, ipu_irq_handler
, 0,
386 "imx_drm", ipu_crtc
);
388 dev_err(ipu_crtc
->dev
, "irq request failed with %d.\n", ret
);
389 goto err_put_plane_res
;
395 ipu_plane_put_resources(ipu_crtc
->plane
[0]);
397 imx_drm_remove_crtc(ipu_crtc
->imx_crtc
);
399 ipu_put_resources(ipu_crtc
);
404 static int ipu_drm_bind(struct device
*dev
, struct device
*master
, void *data
)
406 struct ipu_client_platformdata
*pdata
= dev
->platform_data
;
407 struct ipu_crtc
*ipu_crtc
;
410 ipu_crtc
= devm_kzalloc(dev
, sizeof(*ipu_crtc
), GFP_KERNEL
);
416 ret
= ipu_crtc_init(ipu_crtc
, pdata
);
420 dev_set_drvdata(dev
, ipu_crtc
);
425 static void ipu_drm_unbind(struct device
*dev
, struct device
*master
,
428 struct ipu_crtc
*ipu_crtc
= dev_get_drvdata(dev
);
430 imx_drm_remove_crtc(ipu_crtc
->imx_crtc
);
432 ipu_plane_put_resources(ipu_crtc
->plane
[0]);
433 ipu_put_resources(ipu_crtc
);
436 static const struct component_ops ipu_crtc_ops
= {
437 .bind
= ipu_drm_bind
,
438 .unbind
= ipu_drm_unbind
,
441 static int ipu_drm_probe(struct platform_device
*pdev
)
445 if (!pdev
->dev
.platform_data
)
448 ret
= dma_set_coherent_mask(&pdev
->dev
, DMA_BIT_MASK(32));
452 return component_add(&pdev
->dev
, &ipu_crtc_ops
);
455 static int ipu_drm_remove(struct platform_device
*pdev
)
457 component_del(&pdev
->dev
, &ipu_crtc_ops
);
461 static struct platform_driver ipu_drm_driver
= {
463 .name
= "imx-ipuv3-crtc",
465 .probe
= ipu_drm_probe
,
466 .remove
= ipu_drm_remove
,
468 module_platform_driver(ipu_drm_driver
);
470 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
471 MODULE_DESCRIPTION(DRIVER_DESC
);
472 MODULE_LICENSE("GPL");
473 MODULE_ALIAS("platform:imx-ipuv3-crtc");