Loading...
1/*
2 * Copyright (C) 2014 Traphandler
3 * Copyright (C) 2014 Free Electrons
4 * Copyright (C) 2014 Atmel
5 *
6 * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
7 * Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License version 2 as published by
11 * the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * more details.
17 *
18 * You should have received a copy of the GNU General Public License along with
19 * this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22#ifndef DRM_ATMEL_HLCDC_H
23#define DRM_ATMEL_HLCDC_H
24
25#include <linux/clk.h>
26#include <linux/irqdomain.h>
27#include <linux/pwm.h>
28
29#include <drm/drm_atomic.h>
30#include <drm/drm_atomic_helper.h>
31#include <drm/drm_crtc.h>
32#include <drm/drm_crtc_helper.h>
33#include <drm/drm_fb_cma_helper.h>
34#include <drm/drm_gem_cma_helper.h>
35#include <drm/drm_panel.h>
36#include <drm/drm_plane_helper.h>
37#include <drm/drmP.h>
38
39#include "atmel_hlcdc_layer.h"
40
41#define ATMEL_HLCDC_MAX_LAYERS 5
42
43/**
44 * Atmel HLCDC Display Controller description structure.
45 *
46 * This structure describe the HLCDC IP capabilities and depends on the
47 * HLCDC IP version (or Atmel SoC family).
48 *
49 * @min_width: minimum width supported by the Display Controller
50 * @min_height: minimum height supported by the Display Controller
51 * @max_width: maximum width supported by the Display Controller
52 * @max_height: maximum height supported by the Display Controller
53 * @layers: a layer description table describing available layers
54 * @nlayers: layer description table size
55 */
56struct atmel_hlcdc_dc_desc {
57 int min_width;
58 int min_height;
59 int max_width;
60 int max_height;
61 const struct atmel_hlcdc_layer_desc *layers;
62 int nlayers;
63};
64
65/**
66 * Atmel HLCDC Plane properties.
67 *
68 * This structure stores plane property definitions.
69 *
70 * @alpha: alpha blending (or transparency) property
71 * @rotation: rotation property
72 */
73struct atmel_hlcdc_plane_properties {
74 struct drm_property *alpha;
75};
76
77/**
78 * Atmel HLCDC Plane.
79 *
80 * @base: base DRM plane structure
81 * @layer: HLCDC layer structure
82 * @properties: pointer to the property definitions structure
83 * @rotation: current rotation status
84 */
85struct atmel_hlcdc_plane {
86 struct drm_plane base;
87 struct atmel_hlcdc_layer layer;
88 struct atmel_hlcdc_plane_properties *properties;
89};
90
91static inline struct atmel_hlcdc_plane *
92drm_plane_to_atmel_hlcdc_plane(struct drm_plane *p)
93{
94 return container_of(p, struct atmel_hlcdc_plane, base);
95}
96
97static inline struct atmel_hlcdc_plane *
98atmel_hlcdc_layer_to_plane(struct atmel_hlcdc_layer *l)
99{
100 return container_of(l, struct atmel_hlcdc_plane, layer);
101}
102
103/**
104 * Atmel HLCDC Planes.
105 *
106 * This structure stores the instantiated HLCDC Planes and can be accessed by
107 * the HLCDC Display Controller or the HLCDC CRTC.
108 *
109 * @primary: primary plane
110 * @cursor: hardware cursor plane
111 * @overlays: overlay plane table
112 * @noverlays: number of overlay planes
113 */
114struct atmel_hlcdc_planes {
115 struct atmel_hlcdc_plane *primary;
116 struct atmel_hlcdc_plane *cursor;
117 struct atmel_hlcdc_plane **overlays;
118 int noverlays;
119};
120
121/**
122 * Atmel HLCDC Display Controller.
123 *
124 * @desc: HLCDC Display Controller description
125 * @hlcdc: pointer to the atmel_hlcdc structure provided by the MFD device
126 * @fbdev: framebuffer device attached to the Display Controller
127 * @crtc: CRTC provided by the display controller
128 * @planes: instantiated planes
129 * @layers: active HLCDC layer
130 * @wq: display controller workqueue
131 */
132struct atmel_hlcdc_dc {
133 const struct atmel_hlcdc_dc_desc *desc;
134 struct atmel_hlcdc *hlcdc;
135 struct drm_fbdev_cma *fbdev;
136 struct drm_crtc *crtc;
137 struct atmel_hlcdc_planes *planes;
138 struct atmel_hlcdc_layer *layers[ATMEL_HLCDC_MAX_LAYERS];
139 struct workqueue_struct *wq;
140};
141
142extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats;
143extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats;
144
145int atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc,
146 struct drm_display_mode *mode);
147
148struct atmel_hlcdc_planes *
149atmel_hlcdc_create_planes(struct drm_device *dev);
150
151int atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state);
152
153void atmel_hlcdc_crtc_irq(struct drm_crtc *c);
154
155void atmel_hlcdc_crtc_suspend(struct drm_crtc *crtc);
156void atmel_hlcdc_crtc_resume(struct drm_crtc *crtc);
157
158int atmel_hlcdc_crtc_create(struct drm_device *dev);
159
160int atmel_hlcdc_create_outputs(struct drm_device *dev);
161
162#endif /* DRM_ATMEL_HLCDC_H */
1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2014 Traphandler
4 * Copyright (C) 2014 Free Electrons
5 * Copyright (C) 2014 Atmel
6 *
7 * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
8 * Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
9 */
10
11#ifndef DRM_ATMEL_HLCDC_H
12#define DRM_ATMEL_HLCDC_H
13
14#include <linux/regmap.h>
15
16#include <drm/drm_plane.h>
17
18#define ATMEL_HLCDC_LAYER_CHER 0x0
19#define ATMEL_HLCDC_LAYER_CHDR 0x4
20#define ATMEL_HLCDC_LAYER_CHSR 0x8
21#define ATMEL_HLCDC_LAYER_EN BIT(0)
22#define ATMEL_HLCDC_LAYER_UPDATE BIT(1)
23#define ATMEL_HLCDC_LAYER_A2Q BIT(2)
24#define ATMEL_HLCDC_LAYER_RST BIT(8)
25
26#define ATMEL_HLCDC_LAYER_IER 0xc
27#define ATMEL_HLCDC_LAYER_IDR 0x10
28#define ATMEL_HLCDC_LAYER_IMR 0x14
29#define ATMEL_HLCDC_LAYER_ISR 0x18
30#define ATMEL_HLCDC_LAYER_DFETCH BIT(0)
31#define ATMEL_HLCDC_LAYER_LFETCH BIT(1)
32#define ATMEL_HLCDC_LAYER_DMA_IRQ(p) BIT(2 + (8 * (p)))
33#define ATMEL_HLCDC_LAYER_DSCR_IRQ(p) BIT(3 + (8 * (p)))
34#define ATMEL_HLCDC_LAYER_ADD_IRQ(p) BIT(4 + (8 * (p)))
35#define ATMEL_HLCDC_LAYER_DONE_IRQ(p) BIT(5 + (8 * (p)))
36#define ATMEL_HLCDC_LAYER_OVR_IRQ(p) BIT(6 + (8 * (p)))
37
38#define ATMEL_HLCDC_LAYER_PLANE_HEAD(p) (((p) * 0x10) + 0x1c)
39#define ATMEL_HLCDC_LAYER_PLANE_ADDR(p) (((p) * 0x10) + 0x20)
40#define ATMEL_HLCDC_LAYER_PLANE_CTRL(p) (((p) * 0x10) + 0x24)
41#define ATMEL_HLCDC_LAYER_PLANE_NEXT(p) (((p) * 0x10) + 0x28)
42
43#define ATMEL_HLCDC_LAYER_DMA_CFG 0
44#define ATMEL_HLCDC_LAYER_DMA_SIF BIT(0)
45#define ATMEL_HLCDC_LAYER_DMA_BLEN_MASK GENMASK(5, 4)
46#define ATMEL_HLCDC_LAYER_DMA_BLEN_SINGLE (0 << 4)
47#define ATMEL_HLCDC_LAYER_DMA_BLEN_INCR4 (1 << 4)
48#define ATMEL_HLCDC_LAYER_DMA_BLEN_INCR8 (2 << 4)
49#define ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16 (3 << 4)
50#define ATMEL_HLCDC_LAYER_DMA_DLBO BIT(8)
51#define ATMEL_HLCDC_LAYER_DMA_ROTDIS BIT(12)
52#define ATMEL_HLCDC_LAYER_DMA_LOCKDIS BIT(13)
53
54#define ATMEL_HLCDC_LAYER_FORMAT_CFG 1
55#define ATMEL_HLCDC_LAYER_RGB (0 << 0)
56#define ATMEL_HLCDC_LAYER_CLUT (1 << 0)
57#define ATMEL_HLCDC_LAYER_YUV (2 << 0)
58#define ATMEL_HLCDC_RGB_MODE(m) \
59 (ATMEL_HLCDC_LAYER_RGB | (((m) & 0xf) << 4))
60#define ATMEL_HLCDC_CLUT_MODE(m) \
61 (ATMEL_HLCDC_LAYER_CLUT | (((m) & 0x3) << 8))
62#define ATMEL_HLCDC_YUV_MODE(m) \
63 (ATMEL_HLCDC_LAYER_YUV | (((m) & 0xf) << 12))
64#define ATMEL_HLCDC_YUV422ROT BIT(16)
65#define ATMEL_HLCDC_YUV422SWP BIT(17)
66#define ATMEL_HLCDC_DSCALEOPT BIT(20)
67
68#define ATMEL_HLCDC_C1_MODE ATMEL_HLCDC_CLUT_MODE(0)
69#define ATMEL_HLCDC_C2_MODE ATMEL_HLCDC_CLUT_MODE(1)
70#define ATMEL_HLCDC_C4_MODE ATMEL_HLCDC_CLUT_MODE(2)
71#define ATMEL_HLCDC_C8_MODE ATMEL_HLCDC_CLUT_MODE(3)
72
73#define ATMEL_HLCDC_XRGB4444_MODE ATMEL_HLCDC_RGB_MODE(0)
74#define ATMEL_HLCDC_ARGB4444_MODE ATMEL_HLCDC_RGB_MODE(1)
75#define ATMEL_HLCDC_RGBA4444_MODE ATMEL_HLCDC_RGB_MODE(2)
76#define ATMEL_HLCDC_RGB565_MODE ATMEL_HLCDC_RGB_MODE(3)
77#define ATMEL_HLCDC_ARGB1555_MODE ATMEL_HLCDC_RGB_MODE(4)
78#define ATMEL_HLCDC_XRGB8888_MODE ATMEL_HLCDC_RGB_MODE(9)
79#define ATMEL_HLCDC_RGB888_MODE ATMEL_HLCDC_RGB_MODE(10)
80#define ATMEL_HLCDC_ARGB8888_MODE ATMEL_HLCDC_RGB_MODE(12)
81#define ATMEL_HLCDC_RGBA8888_MODE ATMEL_HLCDC_RGB_MODE(13)
82
83#define ATMEL_HLCDC_AYUV_MODE ATMEL_HLCDC_YUV_MODE(0)
84#define ATMEL_HLCDC_YUYV_MODE ATMEL_HLCDC_YUV_MODE(1)
85#define ATMEL_HLCDC_UYVY_MODE ATMEL_HLCDC_YUV_MODE(2)
86#define ATMEL_HLCDC_YVYU_MODE ATMEL_HLCDC_YUV_MODE(3)
87#define ATMEL_HLCDC_VYUY_MODE ATMEL_HLCDC_YUV_MODE(4)
88#define ATMEL_HLCDC_NV61_MODE ATMEL_HLCDC_YUV_MODE(5)
89#define ATMEL_HLCDC_YUV422_MODE ATMEL_HLCDC_YUV_MODE(6)
90#define ATMEL_HLCDC_NV21_MODE ATMEL_HLCDC_YUV_MODE(7)
91#define ATMEL_HLCDC_YUV420_MODE ATMEL_HLCDC_YUV_MODE(8)
92
93#define ATMEL_HLCDC_LAYER_POS(x, y) ((x) | ((y) << 16))
94#define ATMEL_HLCDC_LAYER_SIZE(w, h) (((w) - 1) | (((h) - 1) << 16))
95
96#define ATMEL_HLCDC_LAYER_CRKEY BIT(0)
97#define ATMEL_HLCDC_LAYER_INV BIT(1)
98#define ATMEL_HLCDC_LAYER_ITER2BL BIT(2)
99#define ATMEL_HLCDC_LAYER_ITER BIT(3)
100#define ATMEL_HLCDC_LAYER_REVALPHA BIT(4)
101#define ATMEL_HLCDC_LAYER_GAEN BIT(5)
102#define ATMEL_HLCDC_LAYER_LAEN BIT(6)
103#define ATMEL_HLCDC_LAYER_OVR BIT(7)
104#define ATMEL_HLCDC_LAYER_DMA BIT(8)
105#define ATMEL_HLCDC_LAYER_REP BIT(9)
106#define ATMEL_HLCDC_LAYER_DSTKEY BIT(10)
107#define ATMEL_HLCDC_LAYER_DISCEN BIT(11)
108#define ATMEL_HLCDC_LAYER_GA_SHIFT 16
109#define ATMEL_HLCDC_LAYER_GA_MASK \
110 GENMASK(23, ATMEL_HLCDC_LAYER_GA_SHIFT)
111#define ATMEL_HLCDC_LAYER_GA(x) \
112 ((x) << ATMEL_HLCDC_LAYER_GA_SHIFT)
113
114#define ATMEL_HLCDC_LAYER_DISC_POS(x, y) ((x) | ((y) << 16))
115#define ATMEL_HLCDC_LAYER_DISC_SIZE(w, h) (((w) - 1) | (((h) - 1) << 16))
116
117#define ATMEL_HLCDC_LAYER_SCALER_FACTORS(x, y) ((x) | ((y) << 16))
118#define ATMEL_HLCDC_LAYER_SCALER_ENABLE BIT(31)
119
120#define ATMEL_HLCDC_LAYER_MAX_PLANES 3
121
122#define ATMEL_HLCDC_DMA_CHANNEL_DSCR_RESERVED BIT(0)
123#define ATMEL_HLCDC_DMA_CHANNEL_DSCR_LOADED BIT(1)
124#define ATMEL_HLCDC_DMA_CHANNEL_DSCR_DONE BIT(2)
125#define ATMEL_HLCDC_DMA_CHANNEL_DSCR_OVERRUN BIT(3)
126
127#define ATMEL_HLCDC_CLUT_SIZE 256
128
129#define ATMEL_HLCDC_MAX_LAYERS 6
130
131/**
132 * Atmel HLCDC Layer registers layout structure
133 *
134 * Each HLCDC layer has its own register organization and a given register
135 * can be placed differently on 2 different layers depending on its
136 * capabilities.
137 * This structure stores common registers layout for a given layer and is
138 * used by HLCDC layer code to choose the appropriate register to write to
139 * or to read from.
140 *
141 * For all fields, a value of zero means "unsupported".
142 *
143 * See Atmel's datasheet for a detailled description of these registers.
144 *
145 * @xstride: xstride registers
146 * @pstride: pstride registers
147 * @pos: position register
148 * @size: displayed size register
149 * @memsize: memory size register
150 * @default_color: default color register
151 * @chroma_key: chroma key register
152 * @chroma_key_mask: chroma key mask register
153 * @general_config: general layer config register
154 * @sacler_config: scaler factors register
155 * @phicoeffs: X/Y PHI coefficient registers
156 * @disc_pos: discard area position register
157 * @disc_size: discard area size register
158 * @csc: color space conversion register
159 */
160struct atmel_hlcdc_layer_cfg_layout {
161 int xstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
162 int pstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
163 int pos;
164 int size;
165 int memsize;
166 int default_color;
167 int chroma_key;
168 int chroma_key_mask;
169 int general_config;
170 int scaler_config;
171 struct {
172 int x;
173 int y;
174 } phicoeffs;
175 int disc_pos;
176 int disc_size;
177 int csc;
178};
179
180/**
181 * Atmel HLCDC DMA descriptor structure
182 *
183 * This structure is used by the HLCDC DMA engine to schedule a DMA transfer.
184 *
185 * The structure fields must remain in this specific order, because they're
186 * used by the HLCDC DMA engine, which expect them in this order.
187 * HLCDC DMA descriptors must be aligned on 64 bits.
188 *
189 * @addr: buffer DMA address
190 * @ctrl: DMA transfer options
191 * @next: next DMA descriptor to fetch
192 * @self: descriptor DMA address
193 */
194struct atmel_hlcdc_dma_channel_dscr {
195 dma_addr_t addr;
196 u32 ctrl;
197 dma_addr_t next;
198 dma_addr_t self;
199} __aligned(sizeof(u64));
200
201/**
202 * Atmel HLCDC layer types
203 */
204enum atmel_hlcdc_layer_type {
205 ATMEL_HLCDC_NO_LAYER,
206 ATMEL_HLCDC_BASE_LAYER,
207 ATMEL_HLCDC_OVERLAY_LAYER,
208 ATMEL_HLCDC_CURSOR_LAYER,
209 ATMEL_HLCDC_PP_LAYER,
210};
211
212/**
213 * Atmel HLCDC Supported formats structure
214 *
215 * This structure list all the formats supported by a given layer.
216 *
217 * @nformats: number of supported formats
218 * @formats: supported formats
219 */
220struct atmel_hlcdc_formats {
221 int nformats;
222 u32 *formats;
223};
224
225/**
226 * Atmel HLCDC Layer description structure
227 *
228 * This structure describes the capabilities provided by a given layer.
229 *
230 * @name: layer name
231 * @type: layer type
232 * @id: layer id
233 * @regs_offset: offset of the layer registers from the HLCDC registers base
234 * @cfgs_offset: CFGX registers offset from the layer registers base
235 * @formats: supported formats
236 * @layout: config registers layout
237 * @max_width: maximum width supported by this layer (0 means unlimited)
238 * @max_height: maximum height supported by this layer (0 means unlimited)
239 */
240struct atmel_hlcdc_layer_desc {
241 const char *name;
242 enum atmel_hlcdc_layer_type type;
243 int id;
244 int regs_offset;
245 int cfgs_offset;
246 int clut_offset;
247 struct atmel_hlcdc_formats *formats;
248 struct atmel_hlcdc_layer_cfg_layout layout;
249 int max_width;
250 int max_height;
251};
252
253/**
254 * Atmel HLCDC Layer.
255 *
256 * A layer can be a DRM plane of a post processing layer used to render
257 * HLCDC composition into memory.
258 *
259 * @desc: layer description
260 * @regmap: pointer to the HLCDC regmap
261 */
262struct atmel_hlcdc_layer {
263 const struct atmel_hlcdc_layer_desc *desc;
264 struct regmap *regmap;
265};
266
267/**
268 * Atmel HLCDC Plane.
269 *
270 * @base: base DRM plane structure
271 * @layer: HLCDC layer structure
272 * @properties: pointer to the property definitions structure
273 */
274struct atmel_hlcdc_plane {
275 struct drm_plane base;
276 struct atmel_hlcdc_layer layer;
277};
278
279static inline struct atmel_hlcdc_plane *
280drm_plane_to_atmel_hlcdc_plane(struct drm_plane *p)
281{
282 return container_of(p, struct atmel_hlcdc_plane, base);
283}
284
285static inline struct atmel_hlcdc_plane *
286atmel_hlcdc_layer_to_plane(struct atmel_hlcdc_layer *layer)
287{
288 return container_of(layer, struct atmel_hlcdc_plane, layer);
289}
290
291/**
292 * Atmel HLCDC Display Controller description structure.
293 *
294 * This structure describes the HLCDC IP capabilities and depends on the
295 * HLCDC IP version (or Atmel SoC family).
296 *
297 * @min_width: minimum width supported by the Display Controller
298 * @min_height: minimum height supported by the Display Controller
299 * @max_width: maximum width supported by the Display Controller
300 * @max_height: maximum height supported by the Display Controller
301 * @max_spw: maximum vertical/horizontal pulse width
302 * @max_vpw: maximum vertical back/front porch width
303 * @max_hpw: maximum horizontal back/front porch width
304 * @conflicting_output_formats: true if RGBXXX output formats conflict with
305 * each other.
306 * @fixed_clksrc: true if clock source is fixed
307 * @layers: a layer description table describing available layers
308 * @nlayers: layer description table size
309 */
310struct atmel_hlcdc_dc_desc {
311 int min_width;
312 int min_height;
313 int max_width;
314 int max_height;
315 int max_spw;
316 int max_vpw;
317 int max_hpw;
318 bool conflicting_output_formats;
319 bool fixed_clksrc;
320 const struct atmel_hlcdc_layer_desc *layers;
321 int nlayers;
322};
323
324/**
325 * Atmel HLCDC Display Controller.
326 *
327 * @desc: HLCDC Display Controller description
328 * @dscrpool: DMA coherent pool used to allocate DMA descriptors
329 * @hlcdc: pointer to the atmel_hlcdc structure provided by the MFD device
330 * @fbdev: framebuffer device attached to the Display Controller
331 * @crtc: CRTC provided by the display controller
332 * @planes: instantiated planes
333 * @layers: active HLCDC layers
334 * @suspend: used to store the HLCDC state when entering suspend
335 */
336struct atmel_hlcdc_dc {
337 const struct atmel_hlcdc_dc_desc *desc;
338 struct dma_pool *dscrpool;
339 struct atmel_hlcdc *hlcdc;
340 struct drm_crtc *crtc;
341 struct atmel_hlcdc_layer *layers[ATMEL_HLCDC_MAX_LAYERS];
342 struct {
343 u32 imr;
344 struct drm_atomic_state *state;
345 } suspend;
346};
347
348extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats;
349extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats;
350
351static inline void atmel_hlcdc_layer_write_reg(struct atmel_hlcdc_layer *layer,
352 unsigned int reg, u32 val)
353{
354 regmap_write(layer->regmap, layer->desc->regs_offset + reg, val);
355}
356
357static inline u32 atmel_hlcdc_layer_read_reg(struct atmel_hlcdc_layer *layer,
358 unsigned int reg)
359{
360 u32 val;
361
362 regmap_read(layer->regmap, layer->desc->regs_offset + reg, &val);
363
364 return val;
365}
366
367static inline void atmel_hlcdc_layer_write_cfg(struct atmel_hlcdc_layer *layer,
368 unsigned int cfgid, u32 val)
369{
370 atmel_hlcdc_layer_write_reg(layer,
371 layer->desc->cfgs_offset +
372 (cfgid * sizeof(u32)), val);
373}
374
375static inline u32 atmel_hlcdc_layer_read_cfg(struct atmel_hlcdc_layer *layer,
376 unsigned int cfgid)
377{
378 return atmel_hlcdc_layer_read_reg(layer,
379 layer->desc->cfgs_offset +
380 (cfgid * sizeof(u32)));
381}
382
383static inline void atmel_hlcdc_layer_write_clut(struct atmel_hlcdc_layer *layer,
384 unsigned int c, u32 val)
385{
386 regmap_write(layer->regmap,
387 layer->desc->clut_offset + c * sizeof(u32),
388 val);
389}
390
391static inline void atmel_hlcdc_layer_init(struct atmel_hlcdc_layer *layer,
392 const struct atmel_hlcdc_layer_desc *desc,
393 struct regmap *regmap)
394{
395 layer->desc = desc;
396 layer->regmap = regmap;
397}
398
399enum drm_mode_status
400atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc,
401 const struct drm_display_mode *mode);
402
403int atmel_hlcdc_create_planes(struct drm_device *dev);
404void atmel_hlcdc_plane_irq(struct atmel_hlcdc_plane *plane);
405
406int atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state);
407int atmel_hlcdc_plane_prepare_ahb_routing(struct drm_crtc_state *c_state);
408
409void atmel_hlcdc_crtc_irq(struct drm_crtc *c);
410
411int atmel_hlcdc_crtc_create(struct drm_device *dev);
412
413int atmel_hlcdc_create_outputs(struct drm_device *dev);
414int atmel_hlcdc_encoder_get_bus_fmt(struct drm_encoder *encoder);
415
416#endif /* DRM_ATMEL_HLCDC_H */