[deliverable/linux.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 "drmP.h"
#include "drm.h"
#include "drm_crtc.h"
#include "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
	40	#include "drmP.h"
	41	#include "drm.h"
	42	#include "drm_crtc.h"
	43	#include "drm_fb_helper.h"
	44	#include "ast_drv.h"
	45
	46	static void ast_dirty_update(struct ast_fbdev *afbdev,
	47	int x, int y, int width, int height)
	48	{
	49	int i;
	50	struct drm_gem_object *obj;
	51	struct ast_bo *bo;
	52	int src_offset, dst_offset;
	53	int bpp = (afbdev->afb.base.bits_per_pixel + 7)/8;
	54	int ret;
	55	bool unmap = false;
	56
	57	obj = afbdev->afb.obj;
	58	bo = gem_to_ast_bo(obj);
	59
	60	ret = ast_bo_reserve(bo, true);
	61	if (ret) {
	62	DRM_ERROR("failed to reserve fb bo\n");
	63	return;
	64	}
65
66	if (!bo->kmap.virtual) {
67	ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
68	if (ret) {
69	DRM_ERROR("failed to kmap fb updates\n");
70	ast_bo_unreserve(bo);
71	return;
72	}
73	unmap = true;
74	}
75	for (i = y; i < y + height; i++) {
76	/* assume equal stride for now */
77	src_offset = dst_offset = i * afbdev->afb.base.pitches[0] + (x * bpp);
78	memcpy_toio(bo->kmap.virtual + src_offset, afbdev->sysram + src_offset, width * bpp);
79
80	}
81	if (unmap)
82	ttm_bo_kunmap(&bo->kmap);
83
84	ast_bo_unreserve(bo);
85	}
86
87	static void ast_fillrect(struct fb_info *info,
88	const struct fb_fillrect *rect)
89	{
90	struct ast_fbdev *afbdev = info->par;
91	sys_fillrect(info, rect);
92	ast_dirty_update(afbdev, rect->dx, rect->dy, rect->width,
93	rect->height);
94	}
95
96	static void ast_copyarea(struct fb_info *info,
97	const struct fb_copyarea *area)
98	{
99	struct ast_fbdev *afbdev = info->par;
100	sys_copyarea(info, area);
101	ast_dirty_update(afbdev, area->dx, area->dy, area->width,
102	area->height);
103	}
104
105	static void ast_imageblit(struct fb_info *info,
106	const struct fb_image *image)
107	{
108	struct ast_fbdev *afbdev = info->par;
109	sys_imageblit(info, image);
110	ast_dirty_update(afbdev, image->dx, image->dy, image->width,
111	image->height);
112	}
113
114	static struct fb_ops astfb_ops = {
115	.owner = THIS_MODULE,
116	.fb_check_var = drm_fb_helper_check_var,
117	.fb_set_par = drm_fb_helper_set_par,
118	.fb_fillrect = ast_fillrect,
119	.fb_copyarea = ast_copyarea,
120	.fb_imageblit = ast_imageblit,
121	.fb_pan_display = drm_fb_helper_pan_display,
122	.fb_blank = drm_fb_helper_blank,
123	.fb_setcmap = drm_fb_helper_setcmap,
124	.fb_debug_enter = drm_fb_helper_debug_enter,
125	.fb_debug_leave = drm_fb_helper_debug_leave,
126	};
127
128	static int astfb_create_object(struct ast_fbdev *afbdev,
129	struct drm_mode_fb_cmd2 *mode_cmd,
130	struct drm_gem_object **gobj_p)
131	{
132	struct drm_device *dev = afbdev->helper.dev;
133	u32 bpp, depth;
134	u32 size;
135	struct drm_gem_object *gobj;
136
137	int ret = 0;
138	drm_fb_get_bpp_depth(mode_cmd->pixel_format, &depth, &bpp);
139
140	size = mode_cmd->pitches[0] * mode_cmd->height;
141	ret = ast_gem_create(dev, size, true, &gobj);
142	if (ret)
143	return ret;
144
145	*gobj_p = gobj;
146	return ret;
147	}
148
149	static int astfb_create(struct ast_fbdev *afbdev,
150	struct drm_fb_helper_surface_size *sizes)
151	{
152	struct drm_device *dev = afbdev->helper.dev;
153	struct drm_mode_fb_cmd2 mode_cmd;
154	struct drm_framebuffer *fb;
155	struct fb_info *info;
156	int size, ret;
157	struct device *device = &dev->pdev->dev;
158	void *sysram;
159	struct drm_gem_object *gobj = NULL;
160	struct ast_bo *bo = NULL;
161	mode_cmd.width = sizes->surface_width;
162	mode_cmd.height = sizes->surface_height;
163	mode_cmd.pitches[0] = mode_cmd.width * ((sizes->surface_bpp + 7)/8);
164
165	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
166	sizes->surface_depth);
167
168	size = mode_cmd.pitches[0] * mode_cmd.height;
169
170	ret = astfb_create_object(afbdev, &mode_cmd, &gobj);
171	if (ret) {
172	DRM_ERROR("failed to create fbcon backing object %d\n", ret);
173	return ret;
174	}
175	bo = gem_to_ast_bo(gobj);
176
177	sysram = vmalloc(size);
178	if (!sysram)
179	return -ENOMEM;
180
181	info = framebuffer_alloc(0, device);
182	if (!info) {
183	ret = -ENOMEM;
184	goto out;
185	}
186	info->par = afbdev;
187
188	ret = ast_framebuffer_init(dev, &afbdev->afb, &mode_cmd, gobj);
189	if (ret)
190	goto out;
191
192	afbdev->sysram = sysram;
193	afbdev->size = size;
194
195	fb = &afbdev->afb.base;
196	afbdev->helper.fb = fb;
197	afbdev->helper.fbdev = info;
198
199	strcpy(info->fix.id, "astdrmfb");
200
201	info->flags = FBINFO_DEFAULT \| FBINFO_CAN_FORCE_OUTPUT;
202	info->fbops = &astfb_ops;
203
204	ret = fb_alloc_cmap(&info->cmap, 256, 0);
205	if (ret) {
206	ret = -ENOMEM;
207	goto out;
208	}
209
210	info->apertures = alloc_apertures(1);
211	if (!info->apertures) {
212	ret = -ENOMEM;
213	goto out;
214	}
215	info->apertures->ranges[0].base = pci_resource_start(dev->pdev, 0);
216	info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);
217
218	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
219	drm_fb_helper_fill_var(info, &afbdev->helper, sizes->fb_width, sizes->fb_height);
220
221	info->screen_base = sysram;
222	info->screen_size = size;
223
224	info->pixmap.flags = FB_PIXMAP_SYSTEM;
225
226	DRM_DEBUG_KMS("allocated %dx%d\n",
227	fb->width, fb->height);
228
229	return 0;
230	out:
231	return ret;
232	}
233
234	static void ast_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
235	u16 blue, int regno)
236	{
237	struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
238	ast_crtc->lut_r[regno] = red >> 8;
239	ast_crtc->lut_g[regno] = green >> 8;
240	ast_crtc->lut_b[regno] = blue >> 8;
241	}
242
243	static void ast_fb_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
244	u16 *blue, int regno)
245	{
246	struct ast_crtc *ast_crtc = to_ast_crtc(crtc);
247	*red = ast_crtc->lut_r[regno] << 8;
248	*green = ast_crtc->lut_g[regno] << 8;
249	*blue = ast_crtc->lut_b[regno] << 8;
250	}
251
252	static int ast_find_or_create_single(struct drm_fb_helper *helper,
253	struct drm_fb_helper_surface_size *sizes)
254	{
255	struct ast_fbdev afbdev = (struct ast_fbdev )helper;
256	int new_fb = 0;
257	int ret;
258
259	if (!helper->fb) {
260	ret = astfb_create(afbdev, sizes);
261	if (ret)
262	return ret;
263	new_fb = 1;
264	}
265	return new_fb;
266	}
267
268	static struct drm_fb_helper_funcs ast_fb_helper_funcs = {
269	.gamma_set = ast_fb_gamma_set,
270	.gamma_get = ast_fb_gamma_get,
271	.fb_probe = ast_find_or_create_single,
272	};
273
274	static void ast_fbdev_destroy(struct drm_device *dev,
275	struct ast_fbdev *afbdev)
276	{
277	struct fb_info *info;
278	struct ast_framebuffer *afb = &afbdev->afb;
279	if (afbdev->helper.fbdev) {
280	info = afbdev->helper.fbdev;
281	unregister_framebuffer(info);
282	if (info->cmap.len)
283	fb_dealloc_cmap(&info->cmap);
284	framebuffer_release(info);
285	}
286
287	if (afb->obj) {
288	drm_gem_object_unreference_unlocked(afb->obj);
289	afb->obj = NULL;
290	}
291	drm_fb_helper_fini(&afbdev->helper);
292
293	vfree(afbdev->sysram);
294	drm_framebuffer_cleanup(&afb->base);
295	}
296
297	int ast_fbdev_init(struct drm_device *dev)
298	{
299	struct ast_private *ast = dev->dev_private;
300	struct ast_fbdev *afbdev;
301	int ret;
302
303	afbdev = kzalloc(sizeof(struct ast_fbdev), GFP_KERNEL);
304	if (!afbdev)
305	return -ENOMEM;
306
307	ast->fbdev = afbdev;
308	afbdev->helper.funcs = &ast_fb_helper_funcs;
309	ret = drm_fb_helper_init(dev, &afbdev->helper,
310	1, 1);
311	if (ret) {
312	kfree(afbdev);
313	return ret;
314	}
315
316	drm_fb_helper_single_add_all_connectors(&afbdev->helper);
317	drm_fb_helper_initial_config(&afbdev->helper, 32);
318	return 0;
319	}
320
321	void ast_fbdev_fini(struct drm_device *dev)
322	{
323	struct ast_private *ast = dev->dev_private;
324
325	if (!ast->fbdev)
326	return;
327
328	ast_fbdev_destroy(dev, ast->fbdev);
329	kfree(ast->fbdev);
330	ast->fbdev = NULL;
331	}
332
333	void ast_fbdev_set_suspend(struct drm_device *dev, int state)
334	{
335	struct ast_private *ast = dev->dev_private;
336
337	if (!ast->fbdev)
338	return;
339
340	fb_set_suspend(ast->fbdev->helper.fbdev, state);
341	}