1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2014 Traphandler
4 * Copyright (C) 2014 Free Electrons
5 * Copyright (C) 2014 Atmel
7 * Author: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
8 * Author: Boris BREZILLON <boris.brezillon@free-electrons.com>
11 #ifndef DRM_ATMEL_HLCDC_H
12 #define DRM_ATMEL_HLCDC_H
14 #include <linux/clk.h>
15 #include <linux/dmapool.h>
16 #include <linux/irqdomain.h>
17 #include <linux/mfd/atmel-hlcdc.h>
18 #include <linux/pwm.h>
20 #include <drm/drm_atomic.h>
21 #include <drm/drm_atomic_helper.h>
22 #include <drm/drm_crtc.h>
23 #include <drm/drm_probe_helper.h>
24 #include <drm/drm_fb_helper.h>
25 #include <drm/drm_fb_cma_helper.h>
26 #include <drm/drm_gem_cma_helper.h>
27 #include <drm/drm_gem_framebuffer_helper.h>
28 #include <drm/drm_panel.h>
29 #include <drm/drm_plane_helper.h>
32 #define ATMEL_HLCDC_LAYER_CHER 0x0
33 #define ATMEL_HLCDC_LAYER_CHDR 0x4
34 #define ATMEL_HLCDC_LAYER_CHSR 0x8
35 #define ATMEL_HLCDC_LAYER_EN BIT(0)
36 #define ATMEL_HLCDC_LAYER_UPDATE BIT(1)
37 #define ATMEL_HLCDC_LAYER_A2Q BIT(2)
38 #define ATMEL_HLCDC_LAYER_RST BIT(8)
40 #define ATMEL_HLCDC_LAYER_IER 0xc
41 #define ATMEL_HLCDC_LAYER_IDR 0x10
42 #define ATMEL_HLCDC_LAYER_IMR 0x14
43 #define ATMEL_HLCDC_LAYER_ISR 0x18
44 #define ATMEL_HLCDC_LAYER_DFETCH BIT(0)
45 #define ATMEL_HLCDC_LAYER_LFETCH BIT(1)
46 #define ATMEL_HLCDC_LAYER_DMA_IRQ(p) BIT(2 + (8 * (p)))
47 #define ATMEL_HLCDC_LAYER_DSCR_IRQ(p) BIT(3 + (8 * (p)))
48 #define ATMEL_HLCDC_LAYER_ADD_IRQ(p) BIT(4 + (8 * (p)))
49 #define ATMEL_HLCDC_LAYER_DONE_IRQ(p) BIT(5 + (8 * (p)))
50 #define ATMEL_HLCDC_LAYER_OVR_IRQ(p) BIT(6 + (8 * (p)))
52 #define ATMEL_HLCDC_LAYER_PLANE_HEAD(p) (((p) * 0x10) + 0x1c)
53 #define ATMEL_HLCDC_LAYER_PLANE_ADDR(p) (((p) * 0x10) + 0x20)
54 #define ATMEL_HLCDC_LAYER_PLANE_CTRL(p) (((p) * 0x10) + 0x24)
55 #define ATMEL_HLCDC_LAYER_PLANE_NEXT(p) (((p) * 0x10) + 0x28)
57 #define ATMEL_HLCDC_LAYER_DMA_CFG 0
58 #define ATMEL_HLCDC_LAYER_DMA_SIF BIT(0)
59 #define ATMEL_HLCDC_LAYER_DMA_BLEN_MASK GENMASK(5, 4)
60 #define ATMEL_HLCDC_LAYER_DMA_BLEN_SINGLE (0 << 4)
61 #define ATMEL_HLCDC_LAYER_DMA_BLEN_INCR4 (1 << 4)
62 #define ATMEL_HLCDC_LAYER_DMA_BLEN_INCR8 (2 << 4)
63 #define ATMEL_HLCDC_LAYER_DMA_BLEN_INCR16 (3 << 4)
64 #define ATMEL_HLCDC_LAYER_DMA_DLBO BIT(8)
65 #define ATMEL_HLCDC_LAYER_DMA_ROTDIS BIT(12)
66 #define ATMEL_HLCDC_LAYER_DMA_LOCKDIS BIT(13)
68 #define ATMEL_HLCDC_LAYER_FORMAT_CFG 1
69 #define ATMEL_HLCDC_LAYER_RGB (0 << 0)
70 #define ATMEL_HLCDC_LAYER_CLUT (1 << 0)
71 #define ATMEL_HLCDC_LAYER_YUV (2 << 0)
72 #define ATMEL_HLCDC_RGB_MODE(m) \
73 (ATMEL_HLCDC_LAYER_RGB | (((m) & 0xf) << 4))
74 #define ATMEL_HLCDC_CLUT_MODE(m) \
75 (ATMEL_HLCDC_LAYER_CLUT | (((m) & 0x3) << 8))
76 #define ATMEL_HLCDC_YUV_MODE(m) \
77 (ATMEL_HLCDC_LAYER_YUV | (((m) & 0xf) << 12))
78 #define ATMEL_HLCDC_YUV422ROT BIT(16)
79 #define ATMEL_HLCDC_YUV422SWP BIT(17)
80 #define ATMEL_HLCDC_DSCALEOPT BIT(20)
82 #define ATMEL_HLCDC_C1_MODE ATMEL_HLCDC_CLUT_MODE(0)
83 #define ATMEL_HLCDC_C2_MODE ATMEL_HLCDC_CLUT_MODE(1)
84 #define ATMEL_HLCDC_C4_MODE ATMEL_HLCDC_CLUT_MODE(2)
85 #define ATMEL_HLCDC_C8_MODE ATMEL_HLCDC_CLUT_MODE(3)
87 #define ATMEL_HLCDC_XRGB4444_MODE ATMEL_HLCDC_RGB_MODE(0)
88 #define ATMEL_HLCDC_ARGB4444_MODE ATMEL_HLCDC_RGB_MODE(1)
89 #define ATMEL_HLCDC_RGBA4444_MODE ATMEL_HLCDC_RGB_MODE(2)
90 #define ATMEL_HLCDC_RGB565_MODE ATMEL_HLCDC_RGB_MODE(3)
91 #define ATMEL_HLCDC_ARGB1555_MODE ATMEL_HLCDC_RGB_MODE(4)
92 #define ATMEL_HLCDC_XRGB8888_MODE ATMEL_HLCDC_RGB_MODE(9)
93 #define ATMEL_HLCDC_RGB888_MODE ATMEL_HLCDC_RGB_MODE(10)
94 #define ATMEL_HLCDC_ARGB8888_MODE ATMEL_HLCDC_RGB_MODE(12)
95 #define ATMEL_HLCDC_RGBA8888_MODE ATMEL_HLCDC_RGB_MODE(13)
97 #define ATMEL_HLCDC_AYUV_MODE ATMEL_HLCDC_YUV_MODE(0)
98 #define ATMEL_HLCDC_YUYV_MODE ATMEL_HLCDC_YUV_MODE(1)
99 #define ATMEL_HLCDC_UYVY_MODE ATMEL_HLCDC_YUV_MODE(2)
100 #define ATMEL_HLCDC_YVYU_MODE ATMEL_HLCDC_YUV_MODE(3)
101 #define ATMEL_HLCDC_VYUY_MODE ATMEL_HLCDC_YUV_MODE(4)
102 #define ATMEL_HLCDC_NV61_MODE ATMEL_HLCDC_YUV_MODE(5)
103 #define ATMEL_HLCDC_YUV422_MODE ATMEL_HLCDC_YUV_MODE(6)
104 #define ATMEL_HLCDC_NV21_MODE ATMEL_HLCDC_YUV_MODE(7)
105 #define ATMEL_HLCDC_YUV420_MODE ATMEL_HLCDC_YUV_MODE(8)
107 #define ATMEL_HLCDC_LAYER_POS(x, y) ((x) | ((y) << 16))
108 #define ATMEL_HLCDC_LAYER_SIZE(w, h) (((w) - 1) | (((h) - 1) << 16))
110 #define ATMEL_HLCDC_LAYER_CRKEY BIT(0)
111 #define ATMEL_HLCDC_LAYER_INV BIT(1)
112 #define ATMEL_HLCDC_LAYER_ITER2BL BIT(2)
113 #define ATMEL_HLCDC_LAYER_ITER BIT(3)
114 #define ATMEL_HLCDC_LAYER_REVALPHA BIT(4)
115 #define ATMEL_HLCDC_LAYER_GAEN BIT(5)
116 #define ATMEL_HLCDC_LAYER_LAEN BIT(6)
117 #define ATMEL_HLCDC_LAYER_OVR BIT(7)
118 #define ATMEL_HLCDC_LAYER_DMA BIT(8)
119 #define ATMEL_HLCDC_LAYER_REP BIT(9)
120 #define ATMEL_HLCDC_LAYER_DSTKEY BIT(10)
121 #define ATMEL_HLCDC_LAYER_DISCEN BIT(11)
122 #define ATMEL_HLCDC_LAYER_GA_SHIFT 16
123 #define ATMEL_HLCDC_LAYER_GA_MASK \
124 GENMASK(23, ATMEL_HLCDC_LAYER_GA_SHIFT)
125 #define ATMEL_HLCDC_LAYER_GA(x) \
126 ((x) << ATMEL_HLCDC_LAYER_GA_SHIFT)
128 #define ATMEL_HLCDC_LAYER_DISC_POS(x, y) ((x) | ((y) << 16))
129 #define ATMEL_HLCDC_LAYER_DISC_SIZE(w, h) (((w) - 1) | (((h) - 1) << 16))
131 #define ATMEL_HLCDC_LAYER_SCALER_FACTORS(x, y) ((x) | ((y) << 16))
132 #define ATMEL_HLCDC_LAYER_SCALER_ENABLE BIT(31)
134 #define ATMEL_HLCDC_LAYER_MAX_PLANES 3
136 #define ATMEL_HLCDC_DMA_CHANNEL_DSCR_RESERVED BIT(0)
137 #define ATMEL_HLCDC_DMA_CHANNEL_DSCR_LOADED BIT(1)
138 #define ATMEL_HLCDC_DMA_CHANNEL_DSCR_DONE BIT(2)
139 #define ATMEL_HLCDC_DMA_CHANNEL_DSCR_OVERRUN BIT(3)
141 #define ATMEL_HLCDC_CLUT_SIZE 256
143 #define ATMEL_HLCDC_MAX_LAYERS 6
146 * Atmel HLCDC Layer registers layout structure
148 * Each HLCDC layer has its own register organization and a given register
149 * can be placed differently on 2 different layers depending on its
151 * This structure stores common registers layout for a given layer and is
152 * used by HLCDC layer code to choose the appropriate register to write to
155 * For all fields, a value of zero means "unsupported".
157 * See Atmel's datasheet for a detailled description of these registers.
159 * @xstride: xstride registers
160 * @pstride: pstride registers
161 * @pos: position register
162 * @size: displayed size register
163 * @memsize: memory size register
164 * @default_color: default color register
165 * @chroma_key: chroma key register
166 * @chroma_key_mask: chroma key mask register
167 * @general_config: general layer config register
168 * @sacler_config: scaler factors register
169 * @phicoeffs: X/Y PHI coefficient registers
170 * @disc_pos: discard area position register
171 * @disc_size: discard area size register
172 * @csc: color space conversion register
174 struct atmel_hlcdc_layer_cfg_layout {
175 int xstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
176 int pstride[ATMEL_HLCDC_LAYER_MAX_PLANES];
195 * Atmel HLCDC DMA descriptor structure
197 * This structure is used by the HLCDC DMA engine to schedule a DMA transfer.
199 * The structure fields must remain in this specific order, because they're
200 * used by the HLCDC DMA engine, which expect them in this order.
201 * HLCDC DMA descriptors must be aligned on 64 bits.
203 * @addr: buffer DMA address
204 * @ctrl: DMA transfer options
205 * @next: next DMA descriptor to fetch
206 * @self: descriptor DMA address
208 struct atmel_hlcdc_dma_channel_dscr {
213 } __aligned(sizeof(u64));
216 * Atmel HLCDC layer types
218 enum atmel_hlcdc_layer_type {
219 ATMEL_HLCDC_NO_LAYER,
220 ATMEL_HLCDC_BASE_LAYER,
221 ATMEL_HLCDC_OVERLAY_LAYER,
222 ATMEL_HLCDC_CURSOR_LAYER,
223 ATMEL_HLCDC_PP_LAYER,
227 * Atmel HLCDC Supported formats structure
229 * This structure list all the formats supported by a given layer.
231 * @nformats: number of supported formats
232 * @formats: supported formats
234 struct atmel_hlcdc_formats {
240 * Atmel HLCDC Layer description structure
242 * This structure describes the capabilities provided by a given layer.
247 * @regs_offset: offset of the layer registers from the HLCDC registers base
248 * @cfgs_offset: CFGX registers offset from the layer registers base
249 * @formats: supported formats
250 * @layout: config registers layout
251 * @max_width: maximum width supported by this layer (0 means unlimited)
252 * @max_height: maximum height supported by this layer (0 means unlimited)
254 struct atmel_hlcdc_layer_desc {
256 enum atmel_hlcdc_layer_type type;
261 struct atmel_hlcdc_formats *formats;
262 struct atmel_hlcdc_layer_cfg_layout layout;
270 * A layer can be a DRM plane of a post processing layer used to render
271 * HLCDC composition into memory.
273 * @desc: layer description
274 * @regmap: pointer to the HLCDC regmap
276 struct atmel_hlcdc_layer {
277 const struct atmel_hlcdc_layer_desc *desc;
278 struct regmap *regmap;
284 * @base: base DRM plane structure
285 * @layer: HLCDC layer structure
286 * @properties: pointer to the property definitions structure
288 struct atmel_hlcdc_plane {
289 struct drm_plane base;
290 struct atmel_hlcdc_layer layer;
293 static inline struct atmel_hlcdc_plane *
294 drm_plane_to_atmel_hlcdc_plane(struct drm_plane *p)
296 return container_of(p, struct atmel_hlcdc_plane, base);
299 static inline struct atmel_hlcdc_plane *
300 atmel_hlcdc_layer_to_plane(struct atmel_hlcdc_layer *layer)
302 return container_of(layer, struct atmel_hlcdc_plane, layer);
306 * Atmel HLCDC Display Controller description structure.
308 * This structure describes the HLCDC IP capabilities and depends on the
309 * HLCDC IP version (or Atmel SoC family).
311 * @min_width: minimum width supported by the Display Controller
312 * @min_height: minimum height supported by the Display Controller
313 * @max_width: maximum width supported by the Display Controller
314 * @max_height: maximum height supported by the Display Controller
315 * @max_spw: maximum vertical/horizontal pulse width
316 * @max_vpw: maximum vertical back/front porch width
317 * @max_hpw: maximum horizontal back/front porch width
318 * @conflicting_output_formats: true if RGBXXX output formats conflict with
320 * @fixed_clksrc: true if clock source is fixed
321 * @layers: a layer description table describing available layers
322 * @nlayers: layer description table size
324 struct atmel_hlcdc_dc_desc {
332 bool conflicting_output_formats;
334 const struct atmel_hlcdc_layer_desc *layers;
339 * Atmel HLCDC Display Controller.
341 * @desc: HLCDC Display Controller description
342 * @dscrpool: DMA coherent pool used to allocate DMA descriptors
343 * @hlcdc: pointer to the atmel_hlcdc structure provided by the MFD device
344 * @fbdev: framebuffer device attached to the Display Controller
345 * @crtc: CRTC provided by the display controller
346 * @planes: instantiated planes
347 * @layers: active HLCDC layers
348 * @wq: display controller workqueue
349 * @suspend: used to store the HLCDC state when entering suspend
350 * @commit: used for async commit handling
352 struct atmel_hlcdc_dc {
353 const struct atmel_hlcdc_dc_desc *desc;
354 struct dma_pool *dscrpool;
355 struct atmel_hlcdc *hlcdc;
356 struct drm_crtc *crtc;
357 struct atmel_hlcdc_layer *layers[ATMEL_HLCDC_MAX_LAYERS];
358 struct workqueue_struct *wq;
361 struct drm_atomic_state *state;
364 wait_queue_head_t wait;
369 extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_formats;
370 extern struct atmel_hlcdc_formats atmel_hlcdc_plane_rgb_and_yuv_formats;
372 static inline void atmel_hlcdc_layer_write_reg(struct atmel_hlcdc_layer *layer,
373 unsigned int reg, u32 val)
375 regmap_write(layer->regmap, layer->desc->regs_offset + reg, val);
378 static inline u32 atmel_hlcdc_layer_read_reg(struct atmel_hlcdc_layer *layer,
383 regmap_read(layer->regmap, layer->desc->regs_offset + reg, &val);
388 static inline void atmel_hlcdc_layer_write_cfg(struct atmel_hlcdc_layer *layer,
389 unsigned int cfgid, u32 val)
391 atmel_hlcdc_layer_write_reg(layer,
392 layer->desc->cfgs_offset +
393 (cfgid * sizeof(u32)), val);
396 static inline u32 atmel_hlcdc_layer_read_cfg(struct atmel_hlcdc_layer *layer,
399 return atmel_hlcdc_layer_read_reg(layer,
400 layer->desc->cfgs_offset +
401 (cfgid * sizeof(u32)));
404 static inline void atmel_hlcdc_layer_write_clut(struct atmel_hlcdc_layer *layer,
405 unsigned int c, u32 val)
407 regmap_write(layer->regmap,
408 layer->desc->clut_offset + c * sizeof(u32),
412 static inline void atmel_hlcdc_layer_init(struct atmel_hlcdc_layer *layer,
413 const struct atmel_hlcdc_layer_desc *desc,
414 struct regmap *regmap)
417 layer->regmap = regmap;
421 atmel_hlcdc_dc_mode_valid(struct atmel_hlcdc_dc *dc,
422 const struct drm_display_mode *mode);
424 int atmel_hlcdc_create_planes(struct drm_device *dev);
425 void atmel_hlcdc_plane_irq(struct atmel_hlcdc_plane *plane);
427 int atmel_hlcdc_plane_prepare_disc_area(struct drm_crtc_state *c_state);
428 int atmel_hlcdc_plane_prepare_ahb_routing(struct drm_crtc_state *c_state);
430 void atmel_hlcdc_crtc_irq(struct drm_crtc *c);
432 int atmel_hlcdc_crtc_create(struct drm_device *dev);
434 int atmel_hlcdc_create_outputs(struct drm_device *dev);
435 int atmel_hlcdc_encoder_get_bus_fmt(struct drm_encoder *encoder);
437 #endif /* DRM_ATMEL_HLCDC_H */