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28#include <linux/slab.h>
29#include <linux/uaccess.h>
30
31#include "isp.h"
32#include "isph3a.h"
33#include "ispstat.h"
34
35
36
37
38static void h3a_aewb_setup_regs(struct ispstat *aewb, void *priv)
39{
40 struct omap3isp_h3a_aewb_config *conf = priv;
41 u32 pcr;
42 u32 win1;
43 u32 start;
44 u32 blk;
45 u32 subwin;
46
47 if (aewb->state == ISPSTAT_DISABLED)
48 return;
49
50 isp_reg_writel(aewb->isp, aewb->active_buf->iommu_addr,
51 OMAP3_ISP_IOMEM_H3A, ISPH3A_AEWBUFST);
52
53 if (!aewb->update)
54 return;
55
56
57 pcr = conf->saturation_limit << ISPH3A_PCR_AEW_AVE2LMT_SHIFT;
58 pcr |= !!conf->alaw_enable << ISPH3A_PCR_AEW_ALAW_EN_SHIFT;
59
60 win1 = ((conf->win_height >> 1) - 1) << ISPH3A_AEWWIN1_WINH_SHIFT;
61 win1 |= ((conf->win_width >> 1) - 1) << ISPH3A_AEWWIN1_WINW_SHIFT;
62 win1 |= (conf->ver_win_count - 1) << ISPH3A_AEWWIN1_WINVC_SHIFT;
63 win1 |= (conf->hor_win_count - 1) << ISPH3A_AEWWIN1_WINHC_SHIFT;
64
65 start = conf->hor_win_start << ISPH3A_AEWINSTART_WINSH_SHIFT;
66 start |= conf->ver_win_start << ISPH3A_AEWINSTART_WINSV_SHIFT;
67
68 blk = conf->blk_ver_win_start << ISPH3A_AEWINBLK_WINSV_SHIFT;
69 blk |= ((conf->blk_win_height >> 1) - 1) << ISPH3A_AEWINBLK_WINH_SHIFT;
70
71 subwin = ((conf->subsample_ver_inc >> 1) - 1) <<
72 ISPH3A_AEWSUBWIN_AEWINCV_SHIFT;
73 subwin |= ((conf->subsample_hor_inc >> 1) - 1) <<
74 ISPH3A_AEWSUBWIN_AEWINCH_SHIFT;
75
76 isp_reg_writel(aewb->isp, win1, OMAP3_ISP_IOMEM_H3A, ISPH3A_AEWWIN1);
77 isp_reg_writel(aewb->isp, start, OMAP3_ISP_IOMEM_H3A,
78 ISPH3A_AEWINSTART);
79 isp_reg_writel(aewb->isp, blk, OMAP3_ISP_IOMEM_H3A, ISPH3A_AEWINBLK);
80 isp_reg_writel(aewb->isp, subwin, OMAP3_ISP_IOMEM_H3A,
81 ISPH3A_AEWSUBWIN);
82 isp_reg_clr_set(aewb->isp, OMAP3_ISP_IOMEM_H3A, ISPH3A_PCR,
83 ISPH3A_PCR_AEW_MASK, pcr);
84
85 aewb->update = 0;
86 aewb->config_counter += aewb->inc_config;
87 aewb->inc_config = 0;
88 aewb->buf_size = conf->buf_size;
89}
90
91static void h3a_aewb_enable(struct ispstat *aewb, int enable)
92{
93 if (enable) {
94 isp_reg_set(aewb->isp, OMAP3_ISP_IOMEM_H3A, ISPH3A_PCR,
95 ISPH3A_PCR_AEW_EN);
96 omap3isp_subclk_enable(aewb->isp, OMAP3_ISP_SUBCLK_AEWB);
97 } else {
98 isp_reg_clr(aewb->isp, OMAP3_ISP_IOMEM_H3A, ISPH3A_PCR,
99 ISPH3A_PCR_AEW_EN);
100 omap3isp_subclk_disable(aewb->isp, OMAP3_ISP_SUBCLK_AEWB);
101 }
102}
103
104static int h3a_aewb_busy(struct ispstat *aewb)
105{
106 return isp_reg_readl(aewb->isp, OMAP3_ISP_IOMEM_H3A, ISPH3A_PCR)
107 & ISPH3A_PCR_BUSYAEAWB;
108}
109
110static u32 h3a_aewb_get_buf_size(struct omap3isp_h3a_aewb_config *conf)
111{
112
113 u32 win_count = (conf->ver_win_count + 1) * conf->hor_win_count;
114
115
116
117
118
119
120 win_count += (win_count + 7) / 8;
121
122 return win_count * AEWB_PACKET_SIZE;
123}
124
125static int h3a_aewb_validate_params(struct ispstat *aewb, void *new_conf)
126{
127 struct omap3isp_h3a_aewb_config *user_cfg = new_conf;
128 u32 buf_size;
129
130 if (unlikely(user_cfg->saturation_limit >
131 OMAP3ISP_AEWB_MAX_SATURATION_LIM))
132 return -EINVAL;
133
134 if (unlikely(user_cfg->win_height < OMAP3ISP_AEWB_MIN_WIN_H ||
135 user_cfg->win_height > OMAP3ISP_AEWB_MAX_WIN_H ||
136 user_cfg->win_height & 0x01))
137 return -EINVAL;
138
139 if (unlikely(user_cfg->win_width < OMAP3ISP_AEWB_MIN_WIN_W ||
140 user_cfg->win_width > OMAP3ISP_AEWB_MAX_WIN_W ||
141 user_cfg->win_width & 0x01))
142 return -EINVAL;
143
144 if (unlikely(user_cfg->ver_win_count < OMAP3ISP_AEWB_MIN_WINVC ||
145 user_cfg->ver_win_count > OMAP3ISP_AEWB_MAX_WINVC))
146 return -EINVAL;
147
148 if (unlikely(user_cfg->hor_win_count < OMAP3ISP_AEWB_MIN_WINHC ||
149 user_cfg->hor_win_count > OMAP3ISP_AEWB_MAX_WINHC))
150 return -EINVAL;
151
152 if (unlikely(user_cfg->ver_win_start > OMAP3ISP_AEWB_MAX_WINSTART))
153 return -EINVAL;
154
155 if (unlikely(user_cfg->hor_win_start > OMAP3ISP_AEWB_MAX_WINSTART))
156 return -EINVAL;
157
158 if (unlikely(user_cfg->blk_ver_win_start > OMAP3ISP_AEWB_MAX_WINSTART))
159 return -EINVAL;
160
161 if (unlikely(user_cfg->blk_win_height < OMAP3ISP_AEWB_MIN_WIN_H ||
162 user_cfg->blk_win_height > OMAP3ISP_AEWB_MAX_WIN_H ||
163 user_cfg->blk_win_height & 0x01))
164 return -EINVAL;
165
166 if (unlikely(user_cfg->subsample_ver_inc < OMAP3ISP_AEWB_MIN_SUB_INC ||
167 user_cfg->subsample_ver_inc > OMAP3ISP_AEWB_MAX_SUB_INC ||
168 user_cfg->subsample_ver_inc & 0x01))
169 return -EINVAL;
170
171 if (unlikely(user_cfg->subsample_hor_inc < OMAP3ISP_AEWB_MIN_SUB_INC ||
172 user_cfg->subsample_hor_inc > OMAP3ISP_AEWB_MAX_SUB_INC ||
173 user_cfg->subsample_hor_inc & 0x01))
174 return -EINVAL;
175
176 buf_size = h3a_aewb_get_buf_size(user_cfg);
177 if (buf_size > user_cfg->buf_size)
178 user_cfg->buf_size = buf_size;
179 else if (user_cfg->buf_size > OMAP3ISP_AEWB_MAX_BUF_SIZE)
180 user_cfg->buf_size = OMAP3ISP_AEWB_MAX_BUF_SIZE;
181
182 return 0;
183}
184
185
186
187
188
189
190
191
192static void h3a_aewb_set_params(struct ispstat *aewb, void *new_conf)
193{
194 struct omap3isp_h3a_aewb_config *user_cfg = new_conf;
195 struct omap3isp_h3a_aewb_config *cur_cfg = aewb->priv;
196 int update = 0;
197
198 if (cur_cfg->saturation_limit != user_cfg->saturation_limit) {
199 cur_cfg->saturation_limit = user_cfg->saturation_limit;
200 update = 1;
201 }
202 if (cur_cfg->alaw_enable != user_cfg->alaw_enable) {
203 cur_cfg->alaw_enable = user_cfg->alaw_enable;
204 update = 1;
205 }
206 if (cur_cfg->win_height != user_cfg->win_height) {
207 cur_cfg->win_height = user_cfg->win_height;
208 update = 1;
209 }
210 if (cur_cfg->win_width != user_cfg->win_width) {
211 cur_cfg->win_width = user_cfg->win_width;
212 update = 1;
213 }
214 if (cur_cfg->ver_win_count != user_cfg->ver_win_count) {
215 cur_cfg->ver_win_count = user_cfg->ver_win_count;
216 update = 1;
217 }
218 if (cur_cfg->hor_win_count != user_cfg->hor_win_count) {
219 cur_cfg->hor_win_count = user_cfg->hor_win_count;
220 update = 1;
221 }
222 if (cur_cfg->ver_win_start != user_cfg->ver_win_start) {
223 cur_cfg->ver_win_start = user_cfg->ver_win_start;
224 update = 1;
225 }
226 if (cur_cfg->hor_win_start != user_cfg->hor_win_start) {
227 cur_cfg->hor_win_start = user_cfg->hor_win_start;
228 update = 1;
229 }
230 if (cur_cfg->blk_ver_win_start != user_cfg->blk_ver_win_start) {
231 cur_cfg->blk_ver_win_start = user_cfg->blk_ver_win_start;
232 update = 1;
233 }
234 if (cur_cfg->blk_win_height != user_cfg->blk_win_height) {
235 cur_cfg->blk_win_height = user_cfg->blk_win_height;
236 update = 1;
237 }
238 if (cur_cfg->subsample_ver_inc != user_cfg->subsample_ver_inc) {
239 cur_cfg->subsample_ver_inc = user_cfg->subsample_ver_inc;
240 update = 1;
241 }
242 if (cur_cfg->subsample_hor_inc != user_cfg->subsample_hor_inc) {
243 cur_cfg->subsample_hor_inc = user_cfg->subsample_hor_inc;
244 update = 1;
245 }
246
247 if (update || !aewb->configured) {
248 aewb->inc_config++;
249 aewb->update = 1;
250 cur_cfg->buf_size = h3a_aewb_get_buf_size(cur_cfg);
251 }
252}
253
254static long h3a_aewb_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
255{
256 struct ispstat *stat = v4l2_get_subdevdata(sd);
257
258 switch (cmd) {
259 case VIDIOC_OMAP3ISP_AEWB_CFG:
260 return omap3isp_stat_config(stat, arg);
261 case VIDIOC_OMAP3ISP_STAT_REQ:
262 return omap3isp_stat_request_statistics(stat, arg);
263 case VIDIOC_OMAP3ISP_STAT_EN: {
264 unsigned long *en = arg;
265 return omap3isp_stat_enable(stat, !!*en);
266 }
267 }
268
269 return -ENOIOCTLCMD;
270}
271
272static const struct ispstat_ops h3a_aewb_ops = {
273 .validate_params = h3a_aewb_validate_params,
274 .set_params = h3a_aewb_set_params,
275 .setup_regs = h3a_aewb_setup_regs,
276 .enable = h3a_aewb_enable,
277 .busy = h3a_aewb_busy,
278};
279
280static const struct v4l2_subdev_core_ops h3a_aewb_subdev_core_ops = {
281 .ioctl = h3a_aewb_ioctl,
282 .subscribe_event = omap3isp_stat_subscribe_event,
283 .unsubscribe_event = omap3isp_stat_unsubscribe_event,
284};
285
286static const struct v4l2_subdev_video_ops h3a_aewb_subdev_video_ops = {
287 .s_stream = omap3isp_stat_s_stream,
288};
289
290static const struct v4l2_subdev_ops h3a_aewb_subdev_ops = {
291 .core = &h3a_aewb_subdev_core_ops,
292 .video = &h3a_aewb_subdev_video_ops,
293};
294
295
296
297
298int omap3isp_h3a_aewb_init(struct isp_device *isp)
299{
300 struct ispstat *aewb = &isp->isp_aewb;
301 struct omap3isp_h3a_aewb_config *aewb_cfg;
302 struct omap3isp_h3a_aewb_config *aewb_recover_cfg;
303 int ret;
304
305 aewb_cfg = kzalloc(sizeof(*aewb_cfg), GFP_KERNEL);
306 if (!aewb_cfg)
307 return -ENOMEM;
308
309 memset(aewb, 0, sizeof(*aewb));
310 aewb->ops = &h3a_aewb_ops;
311 aewb->priv = aewb_cfg;
312 aewb->dma_ch = -1;
313 aewb->event_type = V4L2_EVENT_OMAP3ISP_AEWB;
314 aewb->isp = isp;
315
316
317 aewb_recover_cfg = kzalloc(sizeof(*aewb_recover_cfg), GFP_KERNEL);
318 if (!aewb_recover_cfg) {
319 dev_err(aewb->isp->dev, "AEWB: cannot allocate memory for "
320 "recover configuration.\n");
321 ret = -ENOMEM;
322 goto err_recover_alloc;
323 }
324
325 aewb_recover_cfg->saturation_limit = OMAP3ISP_AEWB_MAX_SATURATION_LIM;
326 aewb_recover_cfg->win_height = OMAP3ISP_AEWB_MIN_WIN_H;
327 aewb_recover_cfg->win_width = OMAP3ISP_AEWB_MIN_WIN_W;
328 aewb_recover_cfg->ver_win_count = OMAP3ISP_AEWB_MIN_WINVC;
329 aewb_recover_cfg->hor_win_count = OMAP3ISP_AEWB_MIN_WINHC;
330 aewb_recover_cfg->blk_ver_win_start = aewb_recover_cfg->ver_win_start +
331 aewb_recover_cfg->win_height * aewb_recover_cfg->ver_win_count;
332 aewb_recover_cfg->blk_win_height = OMAP3ISP_AEWB_MIN_WIN_H;
333 aewb_recover_cfg->subsample_ver_inc = OMAP3ISP_AEWB_MIN_SUB_INC;
334 aewb_recover_cfg->subsample_hor_inc = OMAP3ISP_AEWB_MIN_SUB_INC;
335
336 if (h3a_aewb_validate_params(aewb, aewb_recover_cfg)) {
337 dev_err(aewb->isp->dev, "AEWB: recover configuration is "
338 "invalid.\n");
339 ret = -EINVAL;
340 goto err_conf;
341 }
342
343 aewb_recover_cfg->buf_size = h3a_aewb_get_buf_size(aewb_recover_cfg);
344 aewb->recover_priv = aewb_recover_cfg;
345
346 ret = omap3isp_stat_init(aewb, "AEWB", &h3a_aewb_subdev_ops);
347 if (ret)
348 goto err_conf;
349
350 return 0;
351
352err_conf:
353 kfree(aewb_recover_cfg);
354err_recover_alloc:
355 kfree(aewb_cfg);
356
357 return ret;
358}
359
360
361
362
363void omap3isp_h3a_aewb_cleanup(struct isp_device *isp)
364{
365 kfree(isp->isp_aewb.priv);
366 kfree(isp->isp_aewb.recover_priv);
367 omap3isp_stat_cleanup(&isp->isp_aewb);
368}
369
