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15#include <linux/export.h>
16#include <linux/kernel.h>
17#include <linux/types.h>
18#include <linux/errno.h>
19#include <linux/io.h>
20#include <linux/err.h>
21
22#include <video/imx-ipu-v3.h>
23#include "ipu-prv.h"
24
25#define DP_SYNC 0
26#define DP_ASYNC0 0x60
27#define DP_ASYNC1 0xBC
28
29#define DP_COM_CONF 0x0
30#define DP_GRAPH_WIND_CTRL 0x0004
31#define DP_FG_POS 0x0008
32#define DP_CSC_A_0 0x0044
33#define DP_CSC_A_1 0x0048
34#define DP_CSC_A_2 0x004C
35#define DP_CSC_A_3 0x0050
36#define DP_CSC_0 0x0054
37#define DP_CSC_1 0x0058
38
39#define DP_COM_CONF_FG_EN (1 << 0)
40#define DP_COM_CONF_GWSEL (1 << 1)
41#define DP_COM_CONF_GWAM (1 << 2)
42#define DP_COM_CONF_GWCKE (1 << 3)
43#define DP_COM_CONF_CSC_DEF_MASK (3 << 8)
44#define DP_COM_CONF_CSC_DEF_OFFSET 8
45#define DP_COM_CONF_CSC_DEF_FG (3 << 8)
46#define DP_COM_CONF_CSC_DEF_BG (2 << 8)
47#define DP_COM_CONF_CSC_DEF_BOTH (1 << 8)
48
49#define IPUV3_NUM_FLOWS 3
50
51struct ipu_dp_priv;
52
53struct ipu_dp {
54 u32 flow;
55 bool in_use;
56 bool foreground;
57 enum ipu_color_space in_cs;
58};
59
60struct ipu_flow {
61 struct ipu_dp foreground;
62 struct ipu_dp background;
63 enum ipu_color_space out_cs;
64 void __iomem *base;
65 struct ipu_dp_priv *priv;
66};
67
68struct ipu_dp_priv {
69 struct ipu_soc *ipu;
70 struct device *dev;
71 void __iomem *base;
72 struct ipu_flow flow[IPUV3_NUM_FLOWS];
73 struct mutex mutex;
74 int use_count;
75};
76
77static u32 ipu_dp_flow_base[] = {DP_SYNC, DP_ASYNC0, DP_ASYNC1};
78
79static inline struct ipu_flow *to_flow(struct ipu_dp *dp)
80{
81 if (dp->foreground)
82 return container_of(dp, struct ipu_flow, foreground);
83 else
84 return container_of(dp, struct ipu_flow, background);
85}
86
87int ipu_dp_set_global_alpha(struct ipu_dp *dp, bool enable,
88 u8 alpha, bool bg_chan)
89{
90 struct ipu_flow *flow = to_flow(dp);
91 struct ipu_dp_priv *priv = flow->priv;
92 u32 reg;
93
94 mutex_lock(&priv->mutex);
95
96 reg = readl(flow->base + DP_COM_CONF);
97 if (bg_chan)
98 reg &= ~DP_COM_CONF_GWSEL;
99 else
100 reg |= DP_COM_CONF_GWSEL;
101 writel(reg, flow->base + DP_COM_CONF);
102
103 if (enable) {
104 reg = readl(flow->base + DP_GRAPH_WIND_CTRL) & 0x00FFFFFFL;
105 writel(reg | ((u32) alpha << 24),
106 flow->base + DP_GRAPH_WIND_CTRL);
107
108 reg = readl(flow->base + DP_COM_CONF);
109 writel(reg | DP_COM_CONF_GWAM, flow->base + DP_COM_CONF);
110 } else {
111 reg = readl(flow->base + DP_COM_CONF);
112 writel(reg & ~DP_COM_CONF_GWAM, flow->base + DP_COM_CONF);
113 }
114
115 ipu_srm_dp_update(priv->ipu, true);
116
117 mutex_unlock(&priv->mutex);
118
119 return 0;
120}
121EXPORT_SYMBOL_GPL(ipu_dp_set_global_alpha);
122
123int ipu_dp_set_window_pos(struct ipu_dp *dp, u16 x_pos, u16 y_pos)
124{
125 struct ipu_flow *flow = to_flow(dp);
126 struct ipu_dp_priv *priv = flow->priv;
127
128 writel((x_pos << 16) | y_pos, flow->base + DP_FG_POS);
129
130 ipu_srm_dp_update(priv->ipu, true);
131
132 return 0;
133}
134EXPORT_SYMBOL_GPL(ipu_dp_set_window_pos);
135
136static void ipu_dp_csc_init(struct ipu_flow *flow,
137 enum ipu_color_space in,
138 enum ipu_color_space out,
139 u32 place)
140{
141 u32 reg;
142
143 reg = readl(flow->base + DP_COM_CONF);
144 reg &= ~DP_COM_CONF_CSC_DEF_MASK;
145
146 if (in == out) {
147 writel(reg, flow->base + DP_COM_CONF);
148 return;
149 }
150
151 if (in == IPUV3_COLORSPACE_RGB && out == IPUV3_COLORSPACE_YUV) {
152 writel(0x099 | (0x12d << 16), flow->base + DP_CSC_A_0);
153 writel(0x03a | (0x3a9 << 16), flow->base + DP_CSC_A_1);
154 writel(0x356 | (0x100 << 16), flow->base + DP_CSC_A_2);
155 writel(0x100 | (0x329 << 16), flow->base + DP_CSC_A_3);
156 writel(0x3d6 | (0x0000 << 16) | (2 << 30),
157 flow->base + DP_CSC_0);
158 writel(0x200 | (2 << 14) | (0x200 << 16) | (2 << 30),
159 flow->base + DP_CSC_1);
160 } else {
161 writel(0x095 | (0x000 << 16), flow->base + DP_CSC_A_0);
162 writel(0x0cc | (0x095 << 16), flow->base + DP_CSC_A_1);
163 writel(0x3ce | (0x398 << 16), flow->base + DP_CSC_A_2);
164 writel(0x095 | (0x0ff << 16), flow->base + DP_CSC_A_3);
165 writel(0x000 | (0x3e42 << 16) | (1 << 30),
166 flow->base + DP_CSC_0);
167 writel(0x10a | (1 << 14) | (0x3dd6 << 16) | (1 << 30),
168 flow->base + DP_CSC_1);
169 }
170
171 reg |= place;
172
173 writel(reg, flow->base + DP_COM_CONF);
174}
175
176int ipu_dp_setup_channel(struct ipu_dp *dp,
177 enum ipu_color_space in,
178 enum ipu_color_space out)
179{
180 struct ipu_flow *flow = to_flow(dp);
181 struct ipu_dp_priv *priv = flow->priv;
182
183 mutex_lock(&priv->mutex);
184
185 dp->in_cs = in;
186
187 if (!dp->foreground)
188 flow->out_cs = out;
189
190 if (flow->foreground.in_cs == flow->background.in_cs) {
191
192
193
194
195 ipu_dp_csc_init(flow, flow->foreground.in_cs, flow->out_cs,
196 DP_COM_CONF_CSC_DEF_BOTH);
197 } else {
198 if (flow->foreground.in_cs == flow->out_cs)
199
200
201
202
203 ipu_dp_csc_init(flow, flow->background.in_cs,
204 flow->out_cs, DP_COM_CONF_CSC_DEF_BG);
205 else
206 ipu_dp_csc_init(flow, flow->foreground.in_cs,
207 flow->out_cs, DP_COM_CONF_CSC_DEF_FG);
208 }
209
210 ipu_srm_dp_update(priv->ipu, true);
211
212 mutex_unlock(&priv->mutex);
213
214 return 0;
215}
216EXPORT_SYMBOL_GPL(ipu_dp_setup_channel);
217
218int ipu_dp_enable(struct ipu_soc *ipu)
219{
220 struct ipu_dp_priv *priv = ipu->dp_priv;
221
222 mutex_lock(&priv->mutex);
223
224 if (!priv->use_count)
225 ipu_module_enable(priv->ipu, IPU_CONF_DP_EN);
226
227 priv->use_count++;
228
229 mutex_unlock(&priv->mutex);
230
231 return 0;
232}
233EXPORT_SYMBOL_GPL(ipu_dp_enable);
234
235int ipu_dp_enable_channel(struct ipu_dp *dp)
236{
237 struct ipu_flow *flow = to_flow(dp);
238 struct ipu_dp_priv *priv = flow->priv;
239 u32 reg;
240
241 if (!dp->foreground)
242 return 0;
243
244 mutex_lock(&priv->mutex);
245
246 reg = readl(flow->base + DP_COM_CONF);
247 reg |= DP_COM_CONF_FG_EN;
248 writel(reg, flow->base + DP_COM_CONF);
249
250 ipu_srm_dp_update(priv->ipu, true);
251
252 mutex_unlock(&priv->mutex);
253
254 return 0;
255}
256EXPORT_SYMBOL_GPL(ipu_dp_enable_channel);
257
258void ipu_dp_disable_channel(struct ipu_dp *dp, bool sync)
259{
260 struct ipu_flow *flow = to_flow(dp);
261 struct ipu_dp_priv *priv = flow->priv;
262 u32 reg, csc;
263
264 if (!dp->foreground)
265 return;
266
267 mutex_lock(&priv->mutex);
268
269 reg = readl(flow->base + DP_COM_CONF);
270 csc = reg & DP_COM_CONF_CSC_DEF_MASK;
271 if (csc == DP_COM_CONF_CSC_DEF_FG)
272 reg &= ~DP_COM_CONF_CSC_DEF_MASK;
273
274 reg &= ~DP_COM_CONF_FG_EN;
275 writel(reg, flow->base + DP_COM_CONF);
276
277 writel(0, flow->base + DP_FG_POS);
278 ipu_srm_dp_update(priv->ipu, sync);
279
280 mutex_unlock(&priv->mutex);
281}
282EXPORT_SYMBOL_GPL(ipu_dp_disable_channel);
283
284void ipu_dp_disable(struct ipu_soc *ipu)
285{
286 struct ipu_dp_priv *priv = ipu->dp_priv;
287
288 mutex_lock(&priv->mutex);
289
290 priv->use_count--;
291
292 if (!priv->use_count)
293 ipu_module_disable(priv->ipu, IPU_CONF_DP_EN);
294
295 if (priv->use_count < 0)
296 priv->use_count = 0;
297
298 mutex_unlock(&priv->mutex);
299}
300EXPORT_SYMBOL_GPL(ipu_dp_disable);
301
302struct ipu_dp *ipu_dp_get(struct ipu_soc *ipu, unsigned int flow)
303{
304 struct ipu_dp_priv *priv = ipu->dp_priv;
305 struct ipu_dp *dp;
306
307 if ((flow >> 1) >= IPUV3_NUM_FLOWS)
308 return ERR_PTR(-EINVAL);
309
310 if (flow & 1)
311 dp = &priv->flow[flow >> 1].foreground;
312 else
313 dp = &priv->flow[flow >> 1].background;
314
315 if (dp->in_use)
316 return ERR_PTR(-EBUSY);
317
318 dp->in_use = true;
319
320 return dp;
321}
322EXPORT_SYMBOL_GPL(ipu_dp_get);
323
324void ipu_dp_put(struct ipu_dp *dp)
325{
326 dp->in_use = false;
327}
328EXPORT_SYMBOL_GPL(ipu_dp_put);
329
330int ipu_dp_init(struct ipu_soc *ipu, struct device *dev, unsigned long base)
331{
332 struct ipu_dp_priv *priv;
333 int i;
334
335 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
336 if (!priv)
337 return -ENOMEM;
338 priv->dev = dev;
339 priv->ipu = ipu;
340
341 ipu->dp_priv = priv;
342
343 priv->base = devm_ioremap(dev, base, PAGE_SIZE);
344 if (!priv->base)
345 return -ENOMEM;
346
347 mutex_init(&priv->mutex);
348
349 for (i = 0; i < IPUV3_NUM_FLOWS; i++) {
350 priv->flow[i].foreground.foreground = true;
351 priv->flow[i].base = priv->base + ipu_dp_flow_base[i];
352 priv->flow[i].priv = priv;
353 }
354
355 return 0;
356}
357
358void ipu_dp_exit(struct ipu_soc *ipu)
359{
360}
361
