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6#include <drm/drmP.h>
7#include <linux/clk.h>
8#include <linux/component.h>
9#include <linux/of_device.h>
10#include <linux/of_irq.h>
11#include <linux/platform_device.h>
12
13#include "mtk_drm_crtc.h"
14#include "mtk_drm_ddp_comp.h"
15
16#define DISP_REG_RDMA_INT_ENABLE 0x0000
17#define DISP_REG_RDMA_INT_STATUS 0x0004
18#define RDMA_TARGET_LINE_INT BIT(5)
19#define RDMA_FIFO_UNDERFLOW_INT BIT(4)
20#define RDMA_EOF_ABNORMAL_INT BIT(3)
21#define RDMA_FRAME_END_INT BIT(2)
22#define RDMA_FRAME_START_INT BIT(1)
23#define RDMA_REG_UPDATE_INT BIT(0)
24#define DISP_REG_RDMA_GLOBAL_CON 0x0010
25#define RDMA_ENGINE_EN BIT(0)
26#define RDMA_MODE_MEMORY BIT(1)
27#define DISP_REG_RDMA_SIZE_CON_0 0x0014
28#define RDMA_MATRIX_ENABLE BIT(17)
29#define RDMA_MATRIX_INT_MTX_SEL GENMASK(23, 20)
30#define RDMA_MATRIX_INT_MTX_BT601_to_RGB (6 << 20)
31#define DISP_REG_RDMA_SIZE_CON_1 0x0018
32#define DISP_REG_RDMA_TARGET_LINE 0x001c
33#define DISP_RDMA_MEM_CON 0x0024
34#define MEM_MODE_INPUT_FORMAT_RGB565 (0x000 << 4)
35#define MEM_MODE_INPUT_FORMAT_RGB888 (0x001 << 4)
36#define MEM_MODE_INPUT_FORMAT_RGBA8888 (0x002 << 4)
37#define MEM_MODE_INPUT_FORMAT_ARGB8888 (0x003 << 4)
38#define MEM_MODE_INPUT_FORMAT_UYVY (0x004 << 4)
39#define MEM_MODE_INPUT_FORMAT_YUYV (0x005 << 4)
40#define MEM_MODE_INPUT_SWAP BIT(8)
41#define DISP_RDMA_MEM_SRC_PITCH 0x002c
42#define DISP_RDMA_MEM_GMC_SETTING_0 0x0030
43#define DISP_REG_RDMA_FIFO_CON 0x0040
44#define RDMA_FIFO_UNDERFLOW_EN BIT(31)
45#define RDMA_FIFO_PSEUDO_SIZE(bytes) (((bytes) / 16) << 16)
46#define RDMA_OUTPUT_VALID_FIFO_THRESHOLD(bytes) ((bytes) / 16)
47#define RDMA_FIFO_SIZE(rdma) ((rdma)->data->fifo_size)
48#define DISP_RDMA_MEM_START_ADDR 0x0f00
49
50#define RDMA_MEM_GMC 0x40402020
51
52struct mtk_disp_rdma_data {
53 unsigned int fifo_size;
54};
55
56
57
58
59
60
61struct mtk_disp_rdma {
62 struct mtk_ddp_comp ddp_comp;
63 struct drm_crtc *crtc;
64 const struct mtk_disp_rdma_data *data;
65};
66
67static inline struct mtk_disp_rdma *comp_to_rdma(struct mtk_ddp_comp *comp)
68{
69 return container_of(comp, struct mtk_disp_rdma, ddp_comp);
70}
71
72static irqreturn_t mtk_disp_rdma_irq_handler(int irq, void *dev_id)
73{
74 struct mtk_disp_rdma *priv = dev_id;
75 struct mtk_ddp_comp *rdma = &priv->ddp_comp;
76
77
78 writel(0x0, rdma->regs + DISP_REG_RDMA_INT_STATUS);
79
80 if (!priv->crtc)
81 return IRQ_NONE;
82
83 mtk_crtc_ddp_irq(priv->crtc, rdma);
84
85 return IRQ_HANDLED;
86}
87
88static void rdma_update_bits(struct mtk_ddp_comp *comp, unsigned int reg,
89 unsigned int mask, unsigned int val)
90{
91 unsigned int tmp = readl(comp->regs + reg);
92
93 tmp = (tmp & ~mask) | (val & mask);
94 writel(tmp, comp->regs + reg);
95}
96
97static void mtk_rdma_enable_vblank(struct mtk_ddp_comp *comp,
98 struct drm_crtc *crtc)
99{
100 struct mtk_disp_rdma *rdma = comp_to_rdma(comp);
101
102 rdma->crtc = crtc;
103 rdma_update_bits(comp, DISP_REG_RDMA_INT_ENABLE, RDMA_FRAME_END_INT,
104 RDMA_FRAME_END_INT);
105}
106
107static void mtk_rdma_disable_vblank(struct mtk_ddp_comp *comp)
108{
109 struct mtk_disp_rdma *rdma = comp_to_rdma(comp);
110
111 rdma->crtc = NULL;
112 rdma_update_bits(comp, DISP_REG_RDMA_INT_ENABLE, RDMA_FRAME_END_INT, 0);
113}
114
115static void mtk_rdma_start(struct mtk_ddp_comp *comp)
116{
117 rdma_update_bits(comp, DISP_REG_RDMA_GLOBAL_CON, RDMA_ENGINE_EN,
118 RDMA_ENGINE_EN);
119}
120
121static void mtk_rdma_stop(struct mtk_ddp_comp *comp)
122{
123 rdma_update_bits(comp, DISP_REG_RDMA_GLOBAL_CON, RDMA_ENGINE_EN, 0);
124}
125
126static void mtk_rdma_config(struct mtk_ddp_comp *comp, unsigned int width,
127 unsigned int height, unsigned int vrefresh,
128 unsigned int bpc)
129{
130 unsigned int threshold;
131 unsigned int reg;
132 struct mtk_disp_rdma *rdma = comp_to_rdma(comp);
133
134 rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_0, 0xfff, width);
135 rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_1, 0xfffff, height);
136
137
138
139
140
141
142
143 threshold = width * height * vrefresh * 4 * 7 / 1000000;
144 reg = RDMA_FIFO_UNDERFLOW_EN |
145 RDMA_FIFO_PSEUDO_SIZE(RDMA_FIFO_SIZE(rdma)) |
146 RDMA_OUTPUT_VALID_FIFO_THRESHOLD(threshold);
147 writel(reg, comp->regs + DISP_REG_RDMA_FIFO_CON);
148}
149
150static unsigned int rdma_fmt_convert(struct mtk_disp_rdma *rdma,
151 unsigned int fmt)
152{
153
154
155
156
157
158 switch (fmt) {
159 default:
160 case DRM_FORMAT_RGB565:
161 return MEM_MODE_INPUT_FORMAT_RGB565;
162 case DRM_FORMAT_BGR565:
163 return MEM_MODE_INPUT_FORMAT_RGB565 | MEM_MODE_INPUT_SWAP;
164 case DRM_FORMAT_RGB888:
165 return MEM_MODE_INPUT_FORMAT_RGB888;
166 case DRM_FORMAT_BGR888:
167 return MEM_MODE_INPUT_FORMAT_RGB888 | MEM_MODE_INPUT_SWAP;
168 case DRM_FORMAT_RGBX8888:
169 case DRM_FORMAT_RGBA8888:
170 return MEM_MODE_INPUT_FORMAT_ARGB8888;
171 case DRM_FORMAT_BGRX8888:
172 case DRM_FORMAT_BGRA8888:
173 return MEM_MODE_INPUT_FORMAT_ARGB8888 | MEM_MODE_INPUT_SWAP;
174 case DRM_FORMAT_XRGB8888:
175 case DRM_FORMAT_ARGB8888:
176 return MEM_MODE_INPUT_FORMAT_RGBA8888;
177 case DRM_FORMAT_XBGR8888:
178 case DRM_FORMAT_ABGR8888:
179 return MEM_MODE_INPUT_FORMAT_RGBA8888 | MEM_MODE_INPUT_SWAP;
180 case DRM_FORMAT_UYVY:
181 return MEM_MODE_INPUT_FORMAT_UYVY;
182 case DRM_FORMAT_YUYV:
183 return MEM_MODE_INPUT_FORMAT_YUYV;
184 }
185}
186
187static unsigned int mtk_rdma_layer_nr(struct mtk_ddp_comp *comp)
188{
189 return 1;
190}
191
192static void mtk_rdma_layer_config(struct mtk_ddp_comp *comp, unsigned int idx,
193 struct mtk_plane_state *state)
194{
195 struct mtk_disp_rdma *rdma = comp_to_rdma(comp);
196 struct mtk_plane_pending_state *pending = &state->pending;
197 unsigned int addr = pending->addr;
198 unsigned int pitch = pending->pitch & 0xffff;
199 unsigned int fmt = pending->format;
200 unsigned int con;
201
202 con = rdma_fmt_convert(rdma, fmt);
203 writel_relaxed(con, comp->regs + DISP_RDMA_MEM_CON);
204
205 if (fmt == DRM_FORMAT_UYVY || fmt == DRM_FORMAT_YUYV) {
206 rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_0,
207 RDMA_MATRIX_ENABLE, RDMA_MATRIX_ENABLE);
208 rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_0,
209 RDMA_MATRIX_INT_MTX_SEL,
210 RDMA_MATRIX_INT_MTX_BT601_to_RGB);
211 } else {
212 rdma_update_bits(comp, DISP_REG_RDMA_SIZE_CON_0,
213 RDMA_MATRIX_ENABLE, 0);
214 }
215
216 writel_relaxed(addr, comp->regs + DISP_RDMA_MEM_START_ADDR);
217 writel_relaxed(pitch, comp->regs + DISP_RDMA_MEM_SRC_PITCH);
218 writel(RDMA_MEM_GMC, comp->regs + DISP_RDMA_MEM_GMC_SETTING_0);
219 rdma_update_bits(comp, DISP_REG_RDMA_GLOBAL_CON,
220 RDMA_MODE_MEMORY, RDMA_MODE_MEMORY);
221}
222
223static const struct mtk_ddp_comp_funcs mtk_disp_rdma_funcs = {
224 .config = mtk_rdma_config,
225 .start = mtk_rdma_start,
226 .stop = mtk_rdma_stop,
227 .enable_vblank = mtk_rdma_enable_vblank,
228 .disable_vblank = mtk_rdma_disable_vblank,
229 .layer_nr = mtk_rdma_layer_nr,
230 .layer_config = mtk_rdma_layer_config,
231};
232
233static int mtk_disp_rdma_bind(struct device *dev, struct device *master,
234 void *data)
235{
236 struct mtk_disp_rdma *priv = dev_get_drvdata(dev);
237 struct drm_device *drm_dev = data;
238 int ret;
239
240 ret = mtk_ddp_comp_register(drm_dev, &priv->ddp_comp);
241 if (ret < 0) {
242 dev_err(dev, "Failed to register component %pOF: %d\n",
243 dev->of_node, ret);
244 return ret;
245 }
246
247 return 0;
248
249}
250
251static void mtk_disp_rdma_unbind(struct device *dev, struct device *master,
252 void *data)
253{
254 struct mtk_disp_rdma *priv = dev_get_drvdata(dev);
255 struct drm_device *drm_dev = data;
256
257 mtk_ddp_comp_unregister(drm_dev, &priv->ddp_comp);
258}
259
260static const struct component_ops mtk_disp_rdma_component_ops = {
261 .bind = mtk_disp_rdma_bind,
262 .unbind = mtk_disp_rdma_unbind,
263};
264
265static int mtk_disp_rdma_probe(struct platform_device *pdev)
266{
267 struct device *dev = &pdev->dev;
268 struct mtk_disp_rdma *priv;
269 int comp_id;
270 int irq;
271 int ret;
272
273 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
274 if (!priv)
275 return -ENOMEM;
276
277 irq = platform_get_irq(pdev, 0);
278 if (irq < 0)
279 return irq;
280
281 comp_id = mtk_ddp_comp_get_id(dev->of_node, MTK_DISP_RDMA);
282 if (comp_id < 0) {
283 dev_err(dev, "Failed to identify by alias: %d\n", comp_id);
284 return comp_id;
285 }
286
287 ret = mtk_ddp_comp_init(dev, dev->of_node, &priv->ddp_comp, comp_id,
288 &mtk_disp_rdma_funcs);
289 if (ret) {
290 dev_err(dev, "Failed to initialize component: %d\n", ret);
291 return ret;
292 }
293
294
295 writel(0x0, priv->ddp_comp.regs + DISP_REG_RDMA_INT_ENABLE);
296 writel(0x0, priv->ddp_comp.regs + DISP_REG_RDMA_INT_STATUS);
297
298 ret = devm_request_irq(dev, irq, mtk_disp_rdma_irq_handler,
299 IRQF_TRIGGER_NONE, dev_name(dev), priv);
300 if (ret < 0) {
301 dev_err(dev, "Failed to request irq %d: %d\n", irq, ret);
302 return ret;
303 }
304
305 priv->data = of_device_get_match_data(dev);
306
307 platform_set_drvdata(pdev, priv);
308
309 ret = component_add(dev, &mtk_disp_rdma_component_ops);
310 if (ret)
311 dev_err(dev, "Failed to add component: %d\n", ret);
312
313 return ret;
314}
315
316static int mtk_disp_rdma_remove(struct platform_device *pdev)
317{
318 component_del(&pdev->dev, &mtk_disp_rdma_component_ops);
319
320 return 0;
321}
322
323static const struct mtk_disp_rdma_data mt2701_rdma_driver_data = {
324 .fifo_size = SZ_4K,
325};
326
327static const struct mtk_disp_rdma_data mt8173_rdma_driver_data = {
328 .fifo_size = SZ_8K,
329};
330
331static const struct of_device_id mtk_disp_rdma_driver_dt_match[] = {
332 { .compatible = "mediatek,mt2701-disp-rdma",
333 .data = &mt2701_rdma_driver_data},
334 { .compatible = "mediatek,mt8173-disp-rdma",
335 .data = &mt8173_rdma_driver_data},
336 {},
337};
338MODULE_DEVICE_TABLE(of, mtk_disp_rdma_driver_dt_match);
339
340struct platform_driver mtk_disp_rdma_driver = {
341 .probe = mtk_disp_rdma_probe,
342 .remove = mtk_disp_rdma_remove,
343 .driver = {
344 .name = "mediatek-disp-rdma",
345 .owner = THIS_MODULE,
346 .of_match_table = mtk_disp_rdma_driver_dt_match,
347 },
348};
349
