1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
4 * Author: Jacob Chen <jacob-chen@iotwrt.com>
5 */
6
7 #include <linux/pm_runtime.h>
8
9 #include "rga-hw.h"
10 #include "rga.h"
11
12 enum e_rga_start_pos {
13 LT = 0,
14 LB = 1,
15 RT = 2,
16 RB = 3,
17 };
18
19 struct rga_addr_offset {
20 unsigned int y_off;
21 unsigned int u_off;
22 unsigned int v_off;
23 };
24
25 struct rga_corners_addr_offset {
26 struct rga_addr_offset left_top;
27 struct rga_addr_offset right_top;
28 struct rga_addr_offset left_bottom;
29 struct rga_addr_offset right_bottom;
30 };
31
rga_get_scaling(unsigned int src,unsigned int dst)32 static unsigned int rga_get_scaling(unsigned int src, unsigned int dst)
33 {
34 /*
35 * The rga hw scaling factor is a normalized inverse of the
36 * scaling factor.
37 * For example: When source width is 100 and destination width is 200
38 * (scaling of 2x), then the hw factor is NC * 100 / 200.
39 * The normalization factor (NC) is 2^16 = 0x10000.
40 */
41
42 return (src > dst) ? ((dst << 16) / src) : ((src << 16) / dst);
43 }
44
45 static struct rga_corners_addr_offset
rga_get_addr_offset(struct rga_frame * frm,unsigned int x,unsigned int y,unsigned int w,unsigned int h)46 rga_get_addr_offset(struct rga_frame *frm, unsigned int x, unsigned int y,
47 unsigned int w, unsigned int h)
48 {
49 struct rga_corners_addr_offset offsets;
50 struct rga_addr_offset *lt, *lb, *rt, *rb;
51 unsigned int x_div = 0,
52 y_div = 0, uv_stride = 0, pixel_width = 0, uv_factor = 0;
53
54 lt = &offsets.left_top;
55 lb = &offsets.left_bottom;
56 rt = &offsets.right_top;
57 rb = &offsets.right_bottom;
58
59 x_div = frm->fmt->x_div;
60 y_div = frm->fmt->y_div;
61 uv_factor = frm->fmt->uv_factor;
62 uv_stride = frm->stride / x_div;
63 pixel_width = frm->stride / frm->width;
64
65 lt->y_off = y * frm->stride + x * pixel_width;
66 lt->u_off =
67 frm->width * frm->height + (y / y_div) * uv_stride + x / x_div;
68 lt->v_off = lt->u_off + frm->width * frm->height / uv_factor;
69
70 lb->y_off = lt->y_off + (h - 1) * frm->stride;
71 lb->u_off = lt->u_off + (h / y_div - 1) * uv_stride;
72 lb->v_off = lt->v_off + (h / y_div - 1) * uv_stride;
73
74 rt->y_off = lt->y_off + (w - 1) * pixel_width;
75 rt->u_off = lt->u_off + w / x_div - 1;
76 rt->v_off = lt->v_off + w / x_div - 1;
77
78 rb->y_off = lb->y_off + (w - 1) * pixel_width;
79 rb->u_off = lb->u_off + w / x_div - 1;
80 rb->v_off = lb->v_off + w / x_div - 1;
81
82 return offsets;
83 }
84
rga_lookup_draw_pos(struct rga_corners_addr_offset * offsets,u32 rotate_mode,u32 mirr_mode)85 static struct rga_addr_offset *rga_lookup_draw_pos(struct
86 rga_corners_addr_offset
87 * offsets, u32 rotate_mode,
88 u32 mirr_mode)
89 {
90 static enum e_rga_start_pos rot_mir_point_matrix[4][4] = {
91 {
92 LT, RT, LB, RB,
93 },
94 {
95 RT, LT, RB, LB,
96 },
97 {
98 RB, LB, RT, LT,
99 },
100 {
101 LB, RB, LT, RT,
102 },
103 };
104
105 if (!offsets)
106 return NULL;
107
108 switch (rot_mir_point_matrix[rotate_mode][mirr_mode]) {
109 case LT:
110 return &offsets->left_top;
111 case LB:
112 return &offsets->left_bottom;
113 case RT:
114 return &offsets->right_top;
115 case RB:
116 return &offsets->right_bottom;
117 }
118
119 return NULL;
120 }
121
rga_cmd_set_src_addr(struct rga_ctx * ctx,void * mmu_pages)122 static void rga_cmd_set_src_addr(struct rga_ctx *ctx, void *mmu_pages)
123 {
124 struct rockchip_rga *rga = ctx->rga;
125 u32 *dest = rga->cmdbuf_virt;
126 unsigned int reg;
127
128 reg = RGA_MMU_SRC_BASE - RGA_MODE_BASE_REG;
129 dest[reg >> 2] = virt_to_phys(mmu_pages) >> 4;
130
131 reg = RGA_MMU_CTRL1 - RGA_MODE_BASE_REG;
132 dest[reg >> 2] |= 0x7;
133 }
134
rga_cmd_set_src1_addr(struct rga_ctx * ctx,void * mmu_pages)135 static void rga_cmd_set_src1_addr(struct rga_ctx *ctx, void *mmu_pages)
136 {
137 struct rockchip_rga *rga = ctx->rga;
138 u32 *dest = rga->cmdbuf_virt;
139 unsigned int reg;
140
141 reg = RGA_MMU_SRC1_BASE - RGA_MODE_BASE_REG;
142 dest[reg >> 2] = virt_to_phys(mmu_pages) >> 4;
143
144 reg = RGA_MMU_CTRL1 - RGA_MODE_BASE_REG;
145 dest[reg >> 2] |= 0x7 << 4;
146 }
147
rga_cmd_set_dst_addr(struct rga_ctx * ctx,void * mmu_pages)148 static void rga_cmd_set_dst_addr(struct rga_ctx *ctx, void *mmu_pages)
149 {
150 struct rockchip_rga *rga = ctx->rga;
151 u32 *dest = rga->cmdbuf_virt;
152 unsigned int reg;
153
154 reg = RGA_MMU_DST_BASE - RGA_MODE_BASE_REG;
155 dest[reg >> 2] = virt_to_phys(mmu_pages) >> 4;
156
157 reg = RGA_MMU_CTRL1 - RGA_MODE_BASE_REG;
158 dest[reg >> 2] |= 0x7 << 8;
159 }
160
rga_cmd_set_trans_info(struct rga_ctx * ctx)161 static void rga_cmd_set_trans_info(struct rga_ctx *ctx)
162 {
163 struct rockchip_rga *rga = ctx->rga;
164 u32 *dest = rga->cmdbuf_virt;
165 unsigned int scale_dst_w, scale_dst_h;
166 unsigned int src_h, src_w, src_x, src_y, dst_h, dst_w, dst_x, dst_y;
167 union rga_src_info src_info;
168 union rga_dst_info dst_info;
169 union rga_src_x_factor x_factor;
170 union rga_src_y_factor y_factor;
171 union rga_src_vir_info src_vir_info;
172 union rga_src_act_info src_act_info;
173 union rga_dst_vir_info dst_vir_info;
174 union rga_dst_act_info dst_act_info;
175
176 struct rga_addr_offset *dst_offset;
177 struct rga_corners_addr_offset offsets;
178 struct rga_corners_addr_offset src_offsets;
179
180 src_h = ctx->in.crop.height;
181 src_w = ctx->in.crop.width;
182 src_x = ctx->in.crop.left;
183 src_y = ctx->in.crop.top;
184 dst_h = ctx->out.crop.height;
185 dst_w = ctx->out.crop.width;
186 dst_x = ctx->out.crop.left;
187 dst_y = ctx->out.crop.top;
188
189 src_info.val = dest[(RGA_SRC_INFO - RGA_MODE_BASE_REG) >> 2];
190 dst_info.val = dest[(RGA_DST_INFO - RGA_MODE_BASE_REG) >> 2];
191 x_factor.val = dest[(RGA_SRC_X_FACTOR - RGA_MODE_BASE_REG) >> 2];
192 y_factor.val = dest[(RGA_SRC_Y_FACTOR - RGA_MODE_BASE_REG) >> 2];
193 src_vir_info.val = dest[(RGA_SRC_VIR_INFO - RGA_MODE_BASE_REG) >> 2];
194 src_act_info.val = dest[(RGA_SRC_ACT_INFO - RGA_MODE_BASE_REG) >> 2];
195 dst_vir_info.val = dest[(RGA_DST_VIR_INFO - RGA_MODE_BASE_REG) >> 2];
196 dst_act_info.val = dest[(RGA_DST_ACT_INFO - RGA_MODE_BASE_REG) >> 2];
197
198 src_info.data.format = ctx->in.fmt->hw_format;
199 src_info.data.swap = ctx->in.fmt->color_swap;
200 dst_info.data.format = ctx->out.fmt->hw_format;
201 dst_info.data.swap = ctx->out.fmt->color_swap;
202
203 /*
204 * CSC mode must only be set when the colorspace families differ between
205 * input and output. It must remain unset (zeroed) if both are the same.
206 */
207
208 if (RGA_COLOR_FMT_IS_YUV(ctx->in.fmt->hw_format) &&
209 RGA_COLOR_FMT_IS_RGB(ctx->out.fmt->hw_format)) {
210 switch (ctx->in.colorspace) {
211 case V4L2_COLORSPACE_REC709:
212 src_info.data.csc_mode = RGA_SRC_CSC_MODE_BT709_R0;
213 break;
214 default:
215 src_info.data.csc_mode = RGA_SRC_CSC_MODE_BT601_R0;
216 break;
217 }
218 }
219
220 if (RGA_COLOR_FMT_IS_RGB(ctx->in.fmt->hw_format) &&
221 RGA_COLOR_FMT_IS_YUV(ctx->out.fmt->hw_format)) {
222 switch (ctx->out.colorspace) {
223 case V4L2_COLORSPACE_REC709:
224 dst_info.data.csc_mode = RGA_SRC_CSC_MODE_BT709_R0;
225 break;
226 default:
227 dst_info.data.csc_mode = RGA_DST_CSC_MODE_BT601_R0;
228 break;
229 }
230 }
231
232 if (ctx->vflip)
233 src_info.data.mir_mode |= RGA_SRC_MIRR_MODE_X;
234
235 if (ctx->hflip)
236 src_info.data.mir_mode |= RGA_SRC_MIRR_MODE_Y;
237
238 switch (ctx->rotate) {
239 case 90:
240 src_info.data.rot_mode = RGA_SRC_ROT_MODE_90_DEGREE;
241 break;
242 case 180:
243 src_info.data.rot_mode = RGA_SRC_ROT_MODE_180_DEGREE;
244 break;
245 case 270:
246 src_info.data.rot_mode = RGA_SRC_ROT_MODE_270_DEGREE;
247 break;
248 default:
249 src_info.data.rot_mode = RGA_SRC_ROT_MODE_0_DEGREE;
250 break;
251 }
252
253 /*
254 * Calculate the up/down scaling mode/factor.
255 *
256 * RGA used to scale the picture first, and then rotate second,
257 * so we need to swap the w/h when rotate degree is 90/270.
258 */
259 if (src_info.data.rot_mode == RGA_SRC_ROT_MODE_90_DEGREE ||
260 src_info.data.rot_mode == RGA_SRC_ROT_MODE_270_DEGREE) {
261 if (rga->version.major == 0 || rga->version.minor == 0) {
262 if (dst_w == src_h)
263 src_h -= 8;
264 if (abs(src_w - dst_h) < 16)
265 src_w -= 16;
266 }
267
268 scale_dst_h = dst_w;
269 scale_dst_w = dst_h;
270 } else {
271 scale_dst_w = dst_w;
272 scale_dst_h = dst_h;
273 }
274
275 if (src_w == scale_dst_w) {
276 src_info.data.hscl_mode = RGA_SRC_HSCL_MODE_NO;
277 x_factor.val = 0;
278 } else if (src_w > scale_dst_w) {
279 src_info.data.hscl_mode = RGA_SRC_HSCL_MODE_DOWN;
280 x_factor.data.down_scale_factor =
281 rga_get_scaling(src_w, scale_dst_w) + 1;
282 } else {
283 src_info.data.hscl_mode = RGA_SRC_HSCL_MODE_UP;
284 x_factor.data.up_scale_factor =
285 rga_get_scaling(src_w - 1, scale_dst_w - 1);
286 }
287
288 if (src_h == scale_dst_h) {
289 src_info.data.vscl_mode = RGA_SRC_VSCL_MODE_NO;
290 y_factor.val = 0;
291 } else if (src_h > scale_dst_h) {
292 src_info.data.vscl_mode = RGA_SRC_VSCL_MODE_DOWN;
293 y_factor.data.down_scale_factor =
294 rga_get_scaling(src_h, scale_dst_h) + 1;
295 } else {
296 src_info.data.vscl_mode = RGA_SRC_VSCL_MODE_UP;
297 y_factor.data.up_scale_factor =
298 rga_get_scaling(src_h - 1, scale_dst_h - 1);
299 }
300
301 /*
302 * Calculate the framebuffer virtual strides and active size,
303 * note that the step of vir_stride / vir_width is 4 byte words
304 */
305 src_vir_info.data.vir_stride = ctx->in.stride >> 2;
306 src_vir_info.data.vir_width = ctx->in.stride >> 2;
307
308 src_act_info.data.act_height = src_h - 1;
309 src_act_info.data.act_width = src_w - 1;
310
311 dst_vir_info.data.vir_stride = ctx->out.stride >> 2;
312 dst_act_info.data.act_height = dst_h - 1;
313 dst_act_info.data.act_width = dst_w - 1;
314
315 /*
316 * Calculate the source framebuffer base address with offset pixel.
317 */
318 src_offsets = rga_get_addr_offset(&ctx->in, src_x, src_y,
319 src_w, src_h);
320
321 /*
322 * Configure the dest framebuffer base address with pixel offset.
323 */
324 offsets = rga_get_addr_offset(&ctx->out, dst_x, dst_y, dst_w, dst_h);
325 dst_offset = rga_lookup_draw_pos(&offsets, src_info.data.rot_mode,
326 src_info.data.mir_mode);
327
328 dest[(RGA_SRC_Y_RGB_BASE_ADDR - RGA_MODE_BASE_REG) >> 2] =
329 src_offsets.left_top.y_off;
330 dest[(RGA_SRC_CB_BASE_ADDR - RGA_MODE_BASE_REG) >> 2] =
331 src_offsets.left_top.u_off;
332 dest[(RGA_SRC_CR_BASE_ADDR - RGA_MODE_BASE_REG) >> 2] =
333 src_offsets.left_top.v_off;
334
335 dest[(RGA_SRC_X_FACTOR - RGA_MODE_BASE_REG) >> 2] = x_factor.val;
336 dest[(RGA_SRC_Y_FACTOR - RGA_MODE_BASE_REG) >> 2] = y_factor.val;
337 dest[(RGA_SRC_VIR_INFO - RGA_MODE_BASE_REG) >> 2] = src_vir_info.val;
338 dest[(RGA_SRC_ACT_INFO - RGA_MODE_BASE_REG) >> 2] = src_act_info.val;
339
340 dest[(RGA_SRC_INFO - RGA_MODE_BASE_REG) >> 2] = src_info.val;
341
342 dest[(RGA_DST_Y_RGB_BASE_ADDR - RGA_MODE_BASE_REG) >> 2] =
343 dst_offset->y_off;
344 dest[(RGA_DST_CB_BASE_ADDR - RGA_MODE_BASE_REG) >> 2] =
345 dst_offset->u_off;
346 dest[(RGA_DST_CR_BASE_ADDR - RGA_MODE_BASE_REG) >> 2] =
347 dst_offset->v_off;
348
349 dest[(RGA_DST_VIR_INFO - RGA_MODE_BASE_REG) >> 2] = dst_vir_info.val;
350 dest[(RGA_DST_ACT_INFO - RGA_MODE_BASE_REG) >> 2] = dst_act_info.val;
351
352 dest[(RGA_DST_INFO - RGA_MODE_BASE_REG) >> 2] = dst_info.val;
353 }
354
rga_cmd_set_mode(struct rga_ctx * ctx)355 static void rga_cmd_set_mode(struct rga_ctx *ctx)
356 {
357 struct rockchip_rga *rga = ctx->rga;
358 u32 *dest = rga->cmdbuf_virt;
359 union rga_mode_ctrl mode;
360 union rga_alpha_ctrl0 alpha_ctrl0;
361 union rga_alpha_ctrl1 alpha_ctrl1;
362
363 mode.val = 0;
364 alpha_ctrl0.val = 0;
365 alpha_ctrl1.val = 0;
366
367 mode.data.gradient_sat = 1;
368 mode.data.render = RGA_MODE_RENDER_BITBLT;
369 mode.data.bitblt = RGA_MODE_BITBLT_MODE_SRC_TO_DST;
370
371 /* disable alpha blending */
372 dest[(RGA_ALPHA_CTRL0 - RGA_MODE_BASE_REG) >> 2] = alpha_ctrl0.val;
373 dest[(RGA_ALPHA_CTRL1 - RGA_MODE_BASE_REG) >> 2] = alpha_ctrl1.val;
374
375 dest[(RGA_MODE_CTRL - RGA_MODE_BASE_REG) >> 2] = mode.val;
376 }
377
rga_cmd_set(struct rga_ctx * ctx)378 static void rga_cmd_set(struct rga_ctx *ctx)
379 {
380 struct rockchip_rga *rga = ctx->rga;
381
382 memset(rga->cmdbuf_virt, 0, RGA_CMDBUF_SIZE * 4);
383
384 rga_cmd_set_src_addr(ctx, rga->src_mmu_pages);
385 /*
386 * Due to hardware bug,
387 * src1 mmu also should be configured when using alpha blending.
388 */
389 rga_cmd_set_src1_addr(ctx, rga->dst_mmu_pages);
390
391 rga_cmd_set_dst_addr(ctx, rga->dst_mmu_pages);
392 rga_cmd_set_mode(ctx);
393
394 rga_cmd_set_trans_info(ctx);
395
396 rga_write(rga, RGA_CMD_BASE, rga->cmdbuf_phy);
397
398 /* sync CMD buf for RGA */
399 dma_sync_single_for_device(rga->dev, rga->cmdbuf_phy,
400 PAGE_SIZE, DMA_BIDIRECTIONAL);
401 }
402
rga_hw_start(struct rockchip_rga * rga)403 void rga_hw_start(struct rockchip_rga *rga)
404 {
405 struct rga_ctx *ctx = rga->curr;
406
407 rga_cmd_set(ctx);
408
409 rga_write(rga, RGA_SYS_CTRL, 0x00);
410
411 rga_write(rga, RGA_SYS_CTRL, 0x22);
412
413 rga_write(rga, RGA_INT, 0x600);
414
415 rga_write(rga, RGA_CMD_CTRL, 0x1);
416 }
417