[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / ast / ast_fb.c

/*
 * Copyright 2012 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 */
/*
 * Authors: Dave Airlie <airlied@redhat.com>
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/sysrq.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>


#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_fb_helper.h>
#include "ast_drv.h"

static void ast_dirty_update(struct ast_fbdev *afbdev,
			     int x, int y, int width, int height)
{
	int i;
	struct drm_gem_object *obj;
	struct ast_bo *bo;
	int src_offset, dst_offset;
	int bpp = (afbdev->afb.base.bits_per_pixel + 7)/8;
	int ret;
	bool unmap = false;

	obj = afbdev->afb.obj;
	bo = gem_to_ast_bo(obj);

	ret = ast_bo_reserve(bo, true);
	if (ret) {
		DRM_ERROR("failed to reserve fb bo\n");
		return;
	}

	if (!bo->kmap.virtual) {
		ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
		if (ret) {
			DRM_ERROR("failed to kmap fb updates\n");
			ast_bo_unreserve(bo);
			return;
		}
		unmap = true;
	}
	for (i = y; i < y + height; i++) {
		/* assume equal stride for now */
		src_offset = dst_offset = i * afbdev->afb.base.pitches[0] + (x * bpp);
		memcpy_toio(bo->kmap.virtual + src_offset, afbdev->sysram + src_offset, width * bpp);

	}
	if (unmap)
		ttm_bo_kunmap(&bo->kmap);

	ast_bo_unreserve(bo);
}

static void ast_fillrect(struct fb_info *info,
			 const struct fb_fillrect *rect)
{
	struct ast_fbdev *afbdev = info->par;
	sys_fillrect(info, rect);
	ast_dirty_update(afbdev, rect->dx, rect->dy, rect->width,
			 rect->height);
}

static void ast_copyarea(struct fb_info *info,
			 const struct fb_copyarea *area)
{
	struct ast_fbdev *afbdev = info->par;
	sys_copyarea(info, area);
	ast_dirty_update(afbdev, area->dx, area->dy, area->width,
			 area->height);
}

static void ast_imageblit(struct fb_info *info,
			  const struct fb_image *image)
{
	struct ast_fbdev *afbdev = info->par;
	sys_imageblit(info, image);
	ast_dirty_update(afbdev, image->dx, image->dy, image->width,
			 image->height);
}

static struct fb_ops astfb_ops = {
	.owner = THIS_MODULE,
	.fb_check_var = drm_fb_helper_check_var,
	.fb_set_par = drm_fb_helper_set_par,
	.fb_fillrect = ast_fillrect,
	.fb_copyarea = ast_copyarea,
	.fb_imageblit = ast_imageblit,
	.fb_pan_display = drm_fb_helper_pan_display,
	.fb_blank = drm_fb_helper_blank,
	.fb_setcmap = drm_fb_helper_setcmap,
	.fb_debug_enter = drm_fb_helper_debug_enter,
	.fb_debug_leave = drm_fb_helper_debug_leave,
};

static int astfb_create_object(struct ast_fbdev *afbdev,
			       struct drm_mode_fb_cmd2 *mode_cmd,
			       struct drm_gem_object **gobj_p)
{
	struct drm_device *dev = afbdev->helper.dev;
	u32 bpp, depth;
	u32 size;
	struct drm_gem_object *gobj;

	int ret = 0;
	drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);

	size = mode_cmd->pitches[0] * mode_cmd->height;
	ret = ast_gem_create(dev, size, true, &gobj);
	if (ret)
		return ret;

	*gobj_p = gobj;
	return ret;
}

static int astfb_create(struct ast_fbdev *afbdev,
			struct drm_fb_helper_surface_size *sizes)
{
	struct drm_device *dev = afbdev->helper.dev;
	struct drm_mode_fb_cmd2 mode_cmd;
	struct drm_framebuffer *fb;
	struct fb_info *info;
	int size, ret;
	struct device *device = &dev->pdev->dev;
	void *sysram;
	struct drm_gem_object *gobj = NULL;
	struct ast_bo *bo = NULL;
	mode_cmd.width = sizes->surface_width;
	mode_cmd.height = sizes->surface_height;
	mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7)/8);

	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
							  sizes->surface_depth);

	size = mode_cmd.pitches[0] * mode_cmd.height;

	ret = astfb_create_object(afbdev, &mode_cmd, &gobj);
	if (ret) {
		DRM_ERROR("failed to create fbcon backing object %d\n", ret);
		return ret;
	}
	bo = gem_to_ast_bo(gobj);

	sysram = vmalloc(size);
	if (!sysram)
		return -ENOMEM;

	info = framebuffer_alloc(0, device);
	if (!info) {
		ret = -ENOMEM;
		goto out;
	}
	info->par = afbdev;

	ret = ast_framebuffer_init(dev, &afbdev->afb, &mode_cmd, gobj);
	if (ret)
		goto out;

	afbdev->sysram = sysram;
	afbdev->size = size;

	fb = &afbdev->afb.base;
	afbdev->helper.fb = fb;
	afbdev->helper.fbdev = info;

	strcpy(info->fix.id, "astdrmfb");

	info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
	info->fbops = &astfb_ops;

	ret = fb_alloc_cmap(&info->cmap, 256, 0);
	if (ret) {
		ret = -ENOMEM;
		goto out;
	}

	info->apertures = alloc_apertures(1);
	if (!info->apertures) {
		ret = -ENOMEM;
		goto out;
	}
	info->apertures->ranges[0].base = pci_resource_start(dev->pdev, 0);
	info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);

	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
	drm_fb_helper_fill_var(info, &afbdev->helper, sizes->fb_width, sizes->fb_height);

	info->screen_base = sysram;
	info->screen_size = size;

	info->pixmap.flags = FB_PIXMAP_SYSTEM;

	DRM_DEBUG_KMS("allocated %dx%d\n",
		      fb->width, fb->height);

	return 0;
out:
	return ret;
}

static void ast_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
			       u16 blue, int regno)
{
	struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
	ast_crtc->lut_r[regno] = red >> 8;
	ast_crtc->lut_g[regno] = green >> 8;
	ast_crtc->lut_b[regno] = blue >> 8;
}

static void ast_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
			       u16 *blue, int regno)
{
	struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
	*red = ast_crtc->lut_r[regno] << 8;
	*green = ast_crtc->lut_g[regno] << 8;
	*blue = ast_crtc->lut_b[regno] << 8;
}

static int ast_find_or_create_single(struct drm_fb_helper *helper,
					  struct drm_fb_helper_surface_size *sizes)
{
	struct ast_fbdev *afbdev = (struct ast_fbdev *)helper;
	int new_fb = 0;
	int ret;

	if (!helper->fb) {
		ret = astfb_create(afbdev, sizes);
		if (ret)
			return ret;
		new_fb = 1;
	}
	return new_fb;
}

static struct drm_fb_helper_funcs ast_fb_helper_funcs = {
	.gamma_set = ast_fb_gamma_set,
	.gamma_get = ast_fb_gamma_get,
	.fb_probe = ast_find_or_create_single,
};

static void ast_fbdev_destroy(struct drm_device *dev,
			      struct ast_fbdev *afbdev)
{
	struct fb_info *info;
	struct ast_framebuffer *afb = &afbdev->afb;
	if (afbdev->helper.fbdev) {
		info = afbdev->helper.fbdev;
		unregister_framebuffer(info);
		if (info->cmap.len)
			fb_dealloc_cmap(&info->cmap);
		framebuffer_release(info);
	}

	if (afb->obj) {
		drm_gem_object_unreference_unlocked(afb->obj);
		afb->obj = NULL;
	}
	drm_fb_helper_fini(&afbdev->helper);

	vfree(afbdev->sysram);
	drm_framebuffer_cleanup(&afb->base);
}

int ast_fbdev_init(struct drm_device *dev)
{
	struct ast_private *ast = dev->dev_private;
	struct ast_fbdev *afbdev;
	int ret;

	afbdev = kzalloc(sizeof(struct ast_fbdev), GFP_KERNEL);
	if (!afbdev)
		return -ENOMEM;

	ast->fbdev = afbdev;
	afbdev->helper.funcs = &ast_fb_helper_funcs;
	ret = drm_fb_helper_init(dev, &afbdev->helper,
				 1, 1);
	if (ret) {
		kfree(afbdev);
		return ret;
	}

	drm_fb_helper_single_add_all_connectors(&afbdev->helper);
	drm_fb_helper_initial_config(&afbdev->helper, 32);
	return 0;
}

void ast_fbdev_fini(struct drm_device *dev)
{
	struct ast_private *ast = dev->dev_private;

	if (!ast->fbdev)
		return;

	ast_fbdev_destroy(dev, ast->fbdev);
	kfree(ast->fbdev);
	ast->fbdev = NULL;
}

void ast_fbdev_set_suspend(struct drm_device *dev, int state)
{
	struct ast_private *ast = dev->dev_private;

	if (!ast->fbdev)
		return;

	fb_set_suspend(ast->fbdev->helper.fbdev, state);
}
Commit	Line	Data
312fec14 DA	1	/*
	2	* Copyright 2012 Red Hat Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the
	6	* "Software"), to deal in the Software without restriction, including
	7	* without limitation the rights to use, copy, modify, merge, publish,
	8	* distribute, sub license, and/or sell copies of the Software, and to
	9	* permit persons to whom the Software is furnished to do so, subject to
	10	* the following conditions:
	11	*
	12	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	13	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	14	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
	15	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
	16	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
	17	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
	18	* USE OR OTHER DEALINGS IN THE SOFTWARE.
	19	*
	20	* The above copyright notice and this permission notice (including the
	21	* next paragraph) shall be included in all copies or substantial portions
	22	* of the Software.
	23	*
	24	*/
	25	/*
	26	* Authors: Dave Airlie <airlied@redhat.com>
	27	*/
	28	#include <linux/module.h>
	29	#include <linux/kernel.h>
	30	#include <linux/errno.h>
	31	#include <linux/string.h>
	32	#include <linux/mm.h>
	33	#include <linux/tty.h>
	34	#include <linux/sysrq.h>
	35	#include <linux/delay.h>
	36	#include <linux/fb.h>
	37	#include <linux/init.h>
	38
	39
760285e7 DH	40	#include <drm/drmP.h>
	41	#include <drm/drm_crtc.h>
	42	#include <drm/drm_fb_helper.h>
312fec14 DA	43	#include "ast_drv.h"
	44
	45	static void ast_dirty_update(struct ast_fbdev *afbdev,
	46	int x, int y, int width, int height)
	47	{
	48	int i;
	49	struct drm_gem_object *obj;
	50	struct ast_bo *bo;
	51	int src_offset, dst_offset;
	52	int bpp = (afbdev->afb.base.bits_per_pixel + 7)/8;
	53	int ret;
	54	bool unmap = false;
	55
	56	obj = afbdev->afb.obj;
	57	bo = gem_to_ast_bo(obj);
	58
	59	ret = ast_bo_reserve(bo, true);
	60	if (ret) {
	61	DRM_ERROR("failed to reserve fb bo\n");
	62	return;
	63	}
	64
	65	if (!bo->kmap.virtual) {
	66	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
	67	if (ret) {
	68	DRM_ERROR("failed to kmap fb updates\n");
	69	ast_bo_unreserve(bo);
	70	return;
	71	}
	72	unmap = true;
	73	}
	74	for (i = y; i < y + height; i++) {
	75	/* assume equal stride for now */
	76	src_offset = dst_offset = i * afbdev->afb.base.pitches[0] + (x * bpp);
	77	memcpy_toio(bo->kmap.virtual + src_offset, afbdev->sysram + src_offset, width * bpp);
	78
	79	}
	80	if (unmap)
	81	ttm_bo_kunmap(&bo->kmap);
	82
	83	ast_bo_unreserve(bo);
	84	}
	85
	86	static void ast_fillrect(struct fb_info *info,
	87	const struct fb_fillrect *rect)
	88	{
	89	struct ast_fbdev *afbdev = info->par;
	90	sys_fillrect(info, rect);
	91	ast_dirty_update(afbdev, rect->dx, rect->dy, rect->width,
	92	rect->height);
	93	}
	94
	95	static void ast_copyarea(struct fb_info *info,
	96	const struct fb_copyarea *area)
	97	{
	98	struct ast_fbdev *afbdev = info->par;
	99	sys_copyarea(info, area);
	100	ast_dirty_update(afbdev, area->dx, area->dy, area->width,
	101	area->height);
	102	}
	103
	104	static void ast_imageblit(struct fb_info *info,
	105	const struct fb_image *image)
	106	{
107	struct ast_fbdev *afbdev = info->par;
108	sys_imageblit(info, image);
109	ast_dirty_update(afbdev, image->dx, image->dy, image->width,
110	image->height);
111	}
112
113	static struct fb_ops astfb_ops = {
114	.owner = THIS_MODULE,
115	.fb_check_var = drm_fb_helper_check_var,
116	.fb_set_par = drm_fb_helper_set_par,
117	.fb_fillrect = ast_fillrect,
118	.fb_copyarea = ast_copyarea,
119	.fb_imageblit = ast_imageblit,
120	.fb_pan_display = drm_fb_helper_pan_display,
121	.fb_blank = drm_fb_helper_blank,
122	.fb_setcmap = drm_fb_helper_setcmap,
123	.fb_debug_enter = drm_fb_helper_debug_enter,
124	.fb_debug_leave = drm_fb_helper_debug_leave,
125	};
126
127	static int astfb_create_object(struct ast_fbdev *afbdev,
128	struct drm_mode_fb_cmd2 *mode_cmd,
129	struct drm_gem_object **gobj_p)
130	{
131	struct drm_device *dev = afbdev->helper.dev;
132	u32 bpp, depth;
133	u32 size;
134	struct drm_gem_object *gobj;
135
136	int ret = 0;
137	drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
138
139	size = mode_cmd->pitches[0] * mode_cmd->height;
140	ret = ast_gem_create(dev, size, true, &gobj);
141	if (ret)
142	return ret;
143
144	*gobj_p = gobj;
145	return ret;
146	}
147
148	static int astfb_create(struct ast_fbdev *afbdev,
149	struct drm_fb_helper_surface_size *sizes)
150	{
151	struct drm_device *dev = afbdev->helper.dev;
152	struct drm_mode_fb_cmd2 mode_cmd;
153	struct drm_framebuffer *fb;
154	struct fb_info *info;
155	int size, ret;
156	struct device *device = &dev->pdev->dev;
157	void *sysram;
158	struct drm_gem_object *gobj = NULL;
159	struct ast_bo *bo = NULL;
160	mode_cmd.width = sizes->surface_width;
161	mode_cmd.height = sizes->surface_height;
162	mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7)/8);
163
164	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
165	sizes->surface_depth);
166
167	size = mode_cmd.pitches[0] * mode_cmd.height;
168
169	ret = astfb_create_object(afbdev, &mode_cmd, &gobj);
170	if (ret) {
171	DRM_ERROR("failed to create fbcon backing object %d\n", ret);
172	return ret;
173	}
174	bo = gem_to_ast_bo(gobj);
175
176	sysram = vmalloc(size);
177	if (!sysram)
178	return -ENOMEM;
179
180	info = framebuffer_alloc(0, device);
181	if (!info) {
182	ret = -ENOMEM;
183	goto out;
184	}
185	info->par = afbdev;
186
187	ret = ast_framebuffer_init(dev, &afbdev->afb, &mode_cmd, gobj);
188	if (ret)
189	goto out;
190
191	afbdev->sysram = sysram;
192	afbdev->size = size;
193
194	fb = &afbdev->afb.base;
195	afbdev->helper.fb = fb;
196	afbdev->helper.fbdev = info;
197
198	strcpy(info->fix.id, "astdrmfb");
199
200	info->flags = FBINFO_DEFAULT \| FBINFO_CAN_FORCE_OUTPUT;
201	info->fbops = &astfb_ops;
202
203	ret = fb_alloc_cmap(&info->cmap, 256, 0);
204	if (ret) {
205	ret = -ENOMEM;
206	goto out;
207	}
208
209	info->apertures = alloc_apertures(1);
210	if (!info->apertures) {
211	ret = -ENOMEM;
212	goto out;
213	}
214	info->apertures->ranges[0].base = pci_resource_start(dev->pdev, 0);
215	info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);
216
217	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
218	drm_fb_helper_fill_var(info, &afbdev->helper, sizes->fb_width, sizes->fb_height);
219
220	info->screen_base = sysram;
221	info->screen_size = size;
222
223	info->pixmap.flags = FB_PIXMAP_SYSTEM;
224
225	DRM_DEBUG_KMS("allocated %dx%d\n",
226	fb->width, fb->height);
227
228	return 0;
229	out:
230	return ret;
231	}
232
233	static void ast_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
234	u16 blue, int regno)
235	{
236	struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
237	ast_crtc->lut_r[regno] = red >> 8;
238	ast_crtc->lut_g[regno] = green >> 8;
239	ast_crtc->lut_b[regno] = blue >> 8;
240	}
241
242	static void ast_fb_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
243	u16 *blue, int regno)
244	{
245	struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
246	*red = ast_crtc->lut_r[regno] << 8;
247	*green = ast_crtc->lut_g[regno] << 8;
248	*blue = ast_crtc->lut_b[regno] << 8;
249	}
250
251	static int ast_find_or_create_single(struct drm_fb_helper *helper,
252	struct drm_fb_helper_surface_size *sizes)
253	{
254	struct ast_fbdev afbdev = (struct ast_fbdev )helper;
255	int new_fb = 0;
256	int ret;
257
258	if (!helper->fb) {
259	ret = astfb_create(afbdev, sizes);
260	if (ret)
261	return ret;
262	new_fb = 1;
263	}
264	return new_fb;
265	}
266
267	static struct drm_fb_helper_funcs ast_fb_helper_funcs = {
268	.gamma_set = ast_fb_gamma_set,
269	.gamma_get = ast_fb_gamma_get,
270	.fb_probe = ast_find_or_create_single,
271	};
272
273	static void ast_fbdev_destroy(struct drm_device *dev,
274	struct ast_fbdev *afbdev)
275	{
276	struct fb_info *info;
277	struct ast_framebuffer *afb = &afbdev->afb;
278	if (afbdev->helper.fbdev) {
279	info = afbdev->helper.fbdev;
280	unregister_framebuffer(info);
281	if (info->cmap.len)
282	fb_dealloc_cmap(&info->cmap);
283	framebuffer_release(info);
284	}
285
286	if (afb->obj) {
287	drm_gem_object_unreference_unlocked(afb->obj);
288	afb->obj = NULL;
289	}
290	drm_fb_helper_fini(&afbdev->helper);
291
292	vfree(afbdev->sysram);
293	drm_framebuffer_cleanup(&afb->base);
294	}
295
296	int ast_fbdev_init(struct drm_device *dev)
297	{
298	struct ast_private *ast = dev->dev_private;
299	struct ast_fbdev *afbdev;
300	int ret;
301
302	afbdev = kzalloc(sizeof(struct ast_fbdev), GFP_KERNEL);
303	if (!afbdev)
304	return -ENOMEM;
305
306	ast->fbdev = afbdev;
307	afbdev->helper.funcs = &ast_fb_helper_funcs;
308	ret = drm_fb_helper_init(dev, &afbdev->helper,
309	1, 1);
310	if (ret) {
311	kfree(afbdev);
312	return ret;
313	}
314
315	drm_fb_helper_single_add_all_connectors(&afbdev->helper);
316	drm_fb_helper_initial_config(&afbdev->helper, 32);
317	return 0;
318	}
319
320	void ast_fbdev_fini(struct drm_device *dev)
321	{
322	struct ast_private *ast = dev->dev_private;
323
324	if (!ast->fbdev)
325	return;
326
327	ast_fbdev_destroy(dev, ast->fbdev);
328	kfree(ast->fbdev);
329	ast->fbdev = NULL;
330	}
331
332	void ast_fbdev_set_suspend(struct drm_device *dev, int state)
333	{
334	struct ast_private *ast = dev->dev_private;
335
336	if (!ast->fbdev)
337	return;
338
339	fb_set_suspend(ast->fbdev->helper.fbdev, state);
340	}