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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2012 Russell King
4 * Rewritten from the dovefb driver, and Armada510 manuals.
5 */
6
7#include <drm/drm_atomic.h>
8#include <drm/drm_atomic_helper.h>
9#include <drm/drm_fourcc.h>
10#include <drm/drm_plane_helper.h>
11
12#include "armada_crtc.h"
13#include "armada_drm.h"
14#include "armada_fb.h"
15#include "armada_gem.h"
16#include "armada_hw.h"
17#include "armada_plane.h"
18#include "armada_trace.h"
19
20static const uint32_t armada_primary_formats[] = {
21 DRM_FORMAT_UYVY,
22 DRM_FORMAT_YUYV,
23 DRM_FORMAT_VYUY,
24 DRM_FORMAT_YVYU,
25 DRM_FORMAT_ARGB8888,
26 DRM_FORMAT_ABGR8888,
27 DRM_FORMAT_XRGB8888,
28 DRM_FORMAT_XBGR8888,
29 DRM_FORMAT_RGB888,
30 DRM_FORMAT_BGR888,
31 DRM_FORMAT_ARGB1555,
32 DRM_FORMAT_ABGR1555,
33 DRM_FORMAT_RGB565,
34 DRM_FORMAT_BGR565,
35};
36
37void armada_drm_plane_calc(struct drm_plane_state *state, u32 addrs[2][3],
38 u16 pitches[3], bool interlaced)
39{
40 struct drm_framebuffer *fb = state->fb;
41 const struct drm_format_info *format = fb->format;
42 unsigned int num_planes = format->num_planes;
43 unsigned int x = state->src.x1 >> 16;
44 unsigned int y = state->src.y1 >> 16;
45 u32 addr = drm_fb_obj(fb)->dev_addr;
46 int i;
47
48 DRM_DEBUG_KMS("pitch %u x %d y %d bpp %d\n",
49 fb->pitches[0], x, y, format->cpp[0] * 8);
50
51 if (num_planes > 3)
52 num_planes = 3;
53
54 addrs[0][0] = addr + fb->offsets[0] + y * fb->pitches[0] +
55 x * format->cpp[0];
56 pitches[0] = fb->pitches[0];
57
58 y /= format->vsub;
59 x /= format->hsub;
60
61 for (i = 1; i < num_planes; i++) {
62 addrs[0][i] = addr + fb->offsets[i] + y * fb->pitches[i] +
63 x * format->cpp[i];
64 pitches[i] = fb->pitches[i];
65 }
66 for (; i < 3; i++) {
67 addrs[0][i] = 0;
68 pitches[i] = 0;
69 }
70 if (interlaced) {
71 for (i = 0; i < 3; i++) {
72 addrs[1][i] = addrs[0][i] + pitches[i];
73 pitches[i] *= 2;
74 }
75 } else {
76 for (i = 0; i < 3; i++)
77 addrs[1][i] = addrs[0][i];
78 }
79}
80
81int armada_drm_plane_prepare_fb(struct drm_plane *plane,
82 struct drm_plane_state *state)
83{
84 DRM_DEBUG_KMS("[PLANE:%d:%s] [FB:%d]\n",
85 plane->base.id, plane->name,
86 state->fb ? state->fb->base.id : 0);
87
88 /*
89 * Take a reference on the new framebuffer - we want to
90 * hold on to it while the hardware is displaying it.
91 */
92 if (state->fb)
93 drm_framebuffer_get(state->fb);
94 return 0;
95}
96
97void armada_drm_plane_cleanup_fb(struct drm_plane *plane,
98 struct drm_plane_state *old_state)
99{
100 DRM_DEBUG_KMS("[PLANE:%d:%s] [FB:%d]\n",
101 plane->base.id, plane->name,
102 old_state->fb ? old_state->fb->base.id : 0);
103
104 if (old_state->fb)
105 drm_framebuffer_put(old_state->fb);
106}
107
108int armada_drm_plane_atomic_check(struct drm_plane *plane,
109 struct drm_plane_state *state)
110{
111 struct armada_plane_state *st = to_armada_plane_state(state);
112 struct drm_crtc *crtc = state->crtc;
113 struct drm_crtc_state *crtc_state;
114 bool interlace;
115 int ret;
116
117 if (!state->fb || WARN_ON(!state->crtc)) {
118 state->visible = false;
119 return 0;
120 }
121
122 if (state->state)
123 crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc);
124 else
125 crtc_state = crtc->state;
126
127 ret = drm_atomic_helper_check_plane_state(state, crtc_state, 0,
128 INT_MAX, true, false);
129 if (ret)
130 return ret;
131
132 interlace = crtc_state->adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE;
133 if (interlace) {
134 if ((state->dst.y1 | state->dst.y2) & 1)
135 return -EINVAL;
136 st->src_hw = drm_rect_height(&state->src) >> 17;
137 st->dst_yx = state->dst.y1 >> 1;
138 st->dst_hw = drm_rect_height(&state->dst) >> 1;
139 } else {
140 st->src_hw = drm_rect_height(&state->src) >> 16;
141 st->dst_yx = state->dst.y1;
142 st->dst_hw = drm_rect_height(&state->dst);
143 }
144
145 st->src_hw <<= 16;
146 st->src_hw |= drm_rect_width(&state->src) >> 16;
147 st->dst_yx <<= 16;
148 st->dst_yx |= state->dst.x1 & 0x0000ffff;
149 st->dst_hw <<= 16;
150 st->dst_hw |= drm_rect_width(&state->dst) & 0x0000ffff;
151
152 armada_drm_plane_calc(state, st->addrs, st->pitches, interlace);
153 st->interlace = interlace;
154
155 return 0;
156}
157
158static void armada_drm_primary_plane_atomic_update(struct drm_plane *plane,
159 struct drm_plane_state *old_state)
160{
161 struct drm_plane_state *state = plane->state;
162 struct armada_crtc *dcrtc;
163 struct armada_regs *regs;
164 u32 cfg, cfg_mask, val;
165 unsigned int idx;
166
167 DRM_DEBUG_KMS("[PLANE:%d:%s]\n", plane->base.id, plane->name);
168
169 if (!state->fb || WARN_ON(!state->crtc))
170 return;
171
172 DRM_DEBUG_KMS("[PLANE:%d:%s] is on [CRTC:%d:%s] with [FB:%d] visible %u->%u\n",
173 plane->base.id, plane->name,
174 state->crtc->base.id, state->crtc->name,
175 state->fb->base.id,
176 old_state->visible, state->visible);
177
178 dcrtc = drm_to_armada_crtc(state->crtc);
179 regs = dcrtc->regs + dcrtc->regs_idx;
180
181 idx = 0;
182 if (!old_state->visible && state->visible) {
183 val = CFG_PDWN64x66;
184 if (drm_fb_to_armada_fb(state->fb)->fmt > CFG_420)
185 val |= CFG_PDWN256x24;
186 armada_reg_queue_mod(regs, idx, 0, val, LCD_SPU_SRAM_PARA1);
187 }
188 val = armada_src_hw(state);
189 if (armada_src_hw(old_state) != val)
190 armada_reg_queue_set(regs, idx, val, LCD_SPU_GRA_HPXL_VLN);
191 val = armada_dst_yx(state);
192 if (armada_dst_yx(old_state) != val)
193 armada_reg_queue_set(regs, idx, val, LCD_SPU_GRA_OVSA_HPXL_VLN);
194 val = armada_dst_hw(state);
195 if (armada_dst_hw(old_state) != val)
196 armada_reg_queue_set(regs, idx, val, LCD_SPU_GZM_HPXL_VLN);
197 if (old_state->src.x1 != state->src.x1 ||
198 old_state->src.y1 != state->src.y1 ||
199 old_state->fb != state->fb ||
200 state->crtc->state->mode_changed) {
201 armada_reg_queue_set(regs, idx, armada_addr(state, 0, 0),
202 LCD_CFG_GRA_START_ADDR0);
203 armada_reg_queue_set(regs, idx, armada_addr(state, 1, 0),
204 LCD_CFG_GRA_START_ADDR1);
205 armada_reg_queue_mod(regs, idx, armada_pitch(state, 0), 0xffff,
206 LCD_CFG_GRA_PITCH);
207 }
208 if (old_state->fb != state->fb ||
209 state->crtc->state->mode_changed) {
210 cfg = CFG_GRA_FMT(drm_fb_to_armada_fb(state->fb)->fmt) |
211 CFG_GRA_MOD(drm_fb_to_armada_fb(state->fb)->mod);
212 if (drm_fb_to_armada_fb(state->fb)->fmt > CFG_420)
213 cfg |= CFG_PALETTE_ENA;
214 if (state->visible)
215 cfg |= CFG_GRA_ENA;
216 if (to_armada_plane_state(state)->interlace)
217 cfg |= CFG_GRA_FTOGGLE;
218 cfg_mask = CFG_GRAFORMAT |
219 CFG_GRA_MOD(CFG_SWAPRB | CFG_SWAPUV |
220 CFG_SWAPYU | CFG_YUV2RGB) |
221 CFG_PALETTE_ENA | CFG_GRA_FTOGGLE |
222 CFG_GRA_ENA;
223 } else if (old_state->visible != state->visible) {
224 cfg = state->visible ? CFG_GRA_ENA : 0;
225 cfg_mask = CFG_GRA_ENA;
226 } else {
227 cfg = cfg_mask = 0;
228 }
229 if (drm_rect_width(&old_state->src) != drm_rect_width(&state->src) ||
230 drm_rect_width(&old_state->dst) != drm_rect_width(&state->dst)) {
231 cfg_mask |= CFG_GRA_HSMOOTH;
232 if (drm_rect_width(&state->src) >> 16 !=
233 drm_rect_width(&state->dst))
234 cfg |= CFG_GRA_HSMOOTH;
235 }
236
237 if (cfg_mask)
238 armada_reg_queue_mod(regs, idx, cfg, cfg_mask,
239 LCD_SPU_DMA_CTRL0);
240
241 dcrtc->regs_idx += idx;
242}
243
244static void armada_drm_primary_plane_atomic_disable(struct drm_plane *plane,
245 struct drm_plane_state *old_state)
246{
247 struct armada_crtc *dcrtc;
248 struct armada_regs *regs;
249 unsigned int idx = 0;
250
251 DRM_DEBUG_KMS("[PLANE:%d:%s]\n", plane->base.id, plane->name);
252
253 if (!old_state->crtc)
254 return;
255
256 DRM_DEBUG_KMS("[PLANE:%d:%s] was on [CRTC:%d:%s] with [FB:%d]\n",
257 plane->base.id, plane->name,
258 old_state->crtc->base.id, old_state->crtc->name,
259 old_state->fb->base.id);
260
261 dcrtc = drm_to_armada_crtc(old_state->crtc);
262 regs = dcrtc->regs + dcrtc->regs_idx;
263
264 /* Disable plane and power down most RAMs and FIFOs */
265 armada_reg_queue_mod(regs, idx, 0, CFG_GRA_ENA, LCD_SPU_DMA_CTRL0);
266 armada_reg_queue_mod(regs, idx, CFG_PDWN256x32 | CFG_PDWN256x24 |
267 CFG_PDWN32x32 | CFG_PDWN64x66,
268 0, LCD_SPU_SRAM_PARA1);
269
270 dcrtc->regs_idx += idx;
271}
272
273static const struct drm_plane_helper_funcs armada_primary_plane_helper_funcs = {
274 .prepare_fb = armada_drm_plane_prepare_fb,
275 .cleanup_fb = armada_drm_plane_cleanup_fb,
276 .atomic_check = armada_drm_plane_atomic_check,
277 .atomic_update = armada_drm_primary_plane_atomic_update,
278 .atomic_disable = armada_drm_primary_plane_atomic_disable,
279};
280
281void armada_plane_reset(struct drm_plane *plane)
282{
283 struct armada_plane_state *st;
284 if (plane->state)
285 __drm_atomic_helper_plane_destroy_state(plane->state);
286 kfree(plane->state);
287 st = kzalloc(sizeof(*st), GFP_KERNEL);
288 if (st)
289 __drm_atomic_helper_plane_reset(plane, &st->base);
290}
291
292struct drm_plane_state *armada_plane_duplicate_state(struct drm_plane *plane)
293{
294 struct armada_plane_state *st;
295
296 if (WARN_ON(!plane->state))
297 return NULL;
298
299 st = kmemdup(plane->state, sizeof(*st), GFP_KERNEL);
300 if (st)
301 __drm_atomic_helper_plane_duplicate_state(plane, &st->base);
302
303 return &st->base;
304}
305
306static const struct drm_plane_funcs armada_primary_plane_funcs = {
307 .update_plane = drm_atomic_helper_update_plane,
308 .disable_plane = drm_atomic_helper_disable_plane,
309 .destroy = drm_primary_helper_destroy,
310 .reset = armada_plane_reset,
311 .atomic_duplicate_state = armada_plane_duplicate_state,
312 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
313};
314
315int armada_drm_primary_plane_init(struct drm_device *drm,
316 struct drm_plane *primary)
317{
318 int ret;
319
320 drm_plane_helper_add(primary, &armada_primary_plane_helper_funcs);
321
322 ret = drm_universal_plane_init(drm, primary, 0,
323 &armada_primary_plane_funcs,
324 armada_primary_formats,
325 ARRAY_SIZE(armada_primary_formats),
326 NULL,
327 DRM_PLANE_TYPE_PRIMARY, NULL);
328
329 return ret;
330}