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9#ifndef CAMIF_CORE_H_
10#define CAMIF_CORE_H_
11
12#include <linux/io.h>
13#include <linux/irq.h>
14#include <linux/platform_device.h>
15#include <linux/sched.h>
16#include <linux/spinlock.h>
17#include <linux/types.h>
18#include <linux/videodev2.h>
19
20#include <media/media-entity.h>
21#include <media/v4l2-ctrls.h>
22#include <media/v4l2-dev.h>
23#include <media/v4l2-device.h>
24#include <media/v4l2-mediabus.h>
25#include <media/videobuf2-v4l2.h>
26#include <media/drv-intf/s3c_camif.h>
27
28#define S3C_CAMIF_DRIVER_NAME "s3c-camif"
29#define CAMIF_REQ_BUFS_MIN 3
30#define CAMIF_MAX_OUT_BUFS 4
31#define CAMIF_MAX_PIX_WIDTH 4096
32#define CAMIF_MAX_PIX_HEIGHT 4096
33#define SCALER_MAX_RATIO 64
34#define CAMIF_DEF_WIDTH 640
35#define CAMIF_DEF_HEIGHT 480
36#define CAMIF_STOP_TIMEOUT 1500
37
38#define S3C244X_CAMIF_IP_REV 0x20
39#define S3C2450_CAMIF_IP_REV 0x30
40#define S3C6400_CAMIF_IP_REV 0x31
41#define S3C6410_CAMIF_IP_REV 0x32
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44
45#define ST_VP_PENDING (1 << 0)
46#define ST_VP_RUNNING (1 << 1)
47#define ST_VP_STREAMING (1 << 2)
48#define ST_VP_SENSOR_STREAMING (1 << 3)
49
50#define ST_VP_ABORTING (1 << 4)
51#define ST_VP_OFF (1 << 5)
52#define ST_VP_LASTIRQ (1 << 6)
53
54#define ST_VP_CONFIG (1 << 8)
55
56#define CAMIF_SD_PAD_SINK 0
57#define CAMIF_SD_PAD_SOURCE_C 1
58#define CAMIF_SD_PAD_SOURCE_P 2
59#define CAMIF_SD_PADS_NUM 3
60
61enum img_fmt {
62 IMG_FMT_RGB565 = 0x0010,
63 IMG_FMT_RGB666,
64 IMG_FMT_XRGB8888,
65 IMG_FMT_YCBCR420 = 0x0020,
66 IMG_FMT_YCRCB420,
67 IMG_FMT_YCBCR422P,
68 IMG_FMT_YCBYCR422 = 0x0040,
69 IMG_FMT_YCRYCB422,
70 IMG_FMT_CBYCRY422,
71 IMG_FMT_CRYCBY422,
72};
73
74#define img_fmt_is_rgb(x) ((x) & 0x10)
75#define img_fmt_is_ycbcr(x) ((x) & 0x60)
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77
78#define FMT_FL_S3C24XX_CODEC (1 << 0)
79#define FMT_FL_S3C24XX_PREVIEW (1 << 1)
80#define FMT_FL_S3C64XX (1 << 2)
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90
91struct camif_fmt {
92 char *name;
93 u32 fourcc;
94 u32 color;
95 u16 colplanes;
96 u16 flags;
97 u8 depth;
98 u8 ybpp;
99};
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106struct camif_dma_offset {
107 int initial;
108 int line;
109};
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118struct camif_frame {
119 u16 f_width;
120 u16 f_height;
121 struct v4l2_rect rect;
122 struct camif_dma_offset dma_offset;
123};
124
125
126enum {
127 CLK_GATE,
128 CLK_CAM,
129 CLK_MAX_NUM,
130};
131
132struct vp_pix_limits {
133 u16 max_out_width;
134 u16 max_sc_out_width;
135 u16 out_width_align;
136 u16 max_height;
137 u8 min_out_width;
138 u16 out_hor_offset_align;
139};
140
141struct camif_pix_limits {
142 u16 win_hor_offset_align;
143};
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151struct s3c_camif_variant {
152 struct vp_pix_limits vp_pix_limits[2];
153 struct camif_pix_limits pix_limits;
154 u8 ip_revision;
155 u8 has_img_effect;
156 unsigned int vp_offset;
157};
158
159struct s3c_camif_drvdata {
160 const struct s3c_camif_variant *variant;
161 unsigned long bus_clk_freq;
162};
163
164struct camif_scaler {
165 u8 scaleup_h;
166 u8 scaleup_v;
167 u8 copy;
168 u8 enable;
169 u32 h_shift;
170 u32 v_shift;
171 u32 pre_h_ratio;
172 u32 pre_v_ratio;
173 u32 pre_dst_width;
174 u32 pre_dst_height;
175 u32 main_h_ratio;
176 u32 main_v_ratio;
177};
178
179struct camif_dev;
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207struct camif_vp {
208 wait_queue_head_t irq_queue;
209 int irq;
210 struct camif_dev *camif;
211 struct media_pad pad;
212 struct video_device vdev;
213 struct v4l2_ctrl_handler ctrl_handler;
214 struct v4l2_fh *owner;
215 struct vb2_queue vb_queue;
216 struct list_head pending_buf_q;
217 struct list_head active_buf_q;
218 unsigned int active_buffers;
219 unsigned int buf_index;
220 unsigned int frame_sequence;
221 unsigned int reqbufs_count;
222 struct camif_scaler scaler;
223 const struct camif_fmt *out_fmt;
224 unsigned int payload;
225 struct camif_frame out_frame;
226 unsigned int state;
227 u16 fmt_flags;
228 u8 id;
229 u16 rotation;
230 u8 hflip;
231 u8 vflip;
232 unsigned int offset;
233};
234
235
236#define VP_CODEC 0
237#define VP_PREVIEW 1
238#define CAMIF_VP_NUM 2
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262struct camif_dev {
263 struct media_device media_dev;
264 struct v4l2_device v4l2_dev;
265 struct v4l2_subdev subdev;
266 struct v4l2_mbus_framefmt mbus_fmt;
267 struct v4l2_rect camif_crop;
268 struct media_pad pads[CAMIF_SD_PADS_NUM];
269 int stream_count;
270
271 struct cam_sensor {
272 struct v4l2_subdev *sd;
273 short power_count;
274 short stream_count;
275 } sensor;
276 struct media_pipeline *m_pipeline;
277
278 struct v4l2_ctrl_handler ctrl_handler;
279 struct v4l2_ctrl *ctrl_test_pattern;
280 struct {
281 struct v4l2_ctrl *ctrl_colorfx;
282 struct v4l2_ctrl *ctrl_colorfx_cbcr;
283 };
284 u8 test_pattern;
285 u8 colorfx;
286 u8 colorfx_cb;
287 u8 colorfx_cr;
288
289 struct camif_vp vp[CAMIF_VP_NUM];
290
291 const struct s3c_camif_variant *variant;
292 struct device *dev;
293 struct s3c_camif_plat_data pdata;
294 struct clk *clock[CLK_MAX_NUM];
295 struct mutex lock;
296 spinlock_t slock;
297 void __iomem *io_base;
298};
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306struct camif_addr {
307 dma_addr_t y;
308 dma_addr_t cb;
309 dma_addr_t cr;
310};
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319struct camif_buffer {
320 struct vb2_v4l2_buffer vb;
321 struct list_head list;
322 struct camif_addr paddr;
323 unsigned int index;
324};
325
326const struct camif_fmt *s3c_camif_find_format(struct camif_vp *vp,
327 const u32 *pixelformat, int index);
328int s3c_camif_register_video_node(struct camif_dev *camif, int idx);
329void s3c_camif_unregister_video_node(struct camif_dev *camif, int idx);
330irqreturn_t s3c_camif_irq_handler(int irq, void *priv);
331int s3c_camif_create_subdev(struct camif_dev *camif);
332void s3c_camif_unregister_subdev(struct camif_dev *camif);
333int s3c_camif_set_defaults(struct camif_dev *camif);
334int s3c_camif_get_scaler_config(struct camif_vp *vp,
335 struct camif_scaler *scaler);
336
337static inline void camif_active_queue_add(struct camif_vp *vp,
338 struct camif_buffer *buf)
339{
340 list_add_tail(&buf->list, &vp->active_buf_q);
341 vp->active_buffers++;
342}
343
344static inline struct camif_buffer *camif_active_queue_pop(
345 struct camif_vp *vp)
346{
347 struct camif_buffer *buf = list_first_entry(&vp->active_buf_q,
348 struct camif_buffer, list);
349 list_del(&buf->list);
350 vp->active_buffers--;
351 return buf;
352}
353
354static inline struct camif_buffer *camif_active_queue_peek(
355 struct camif_vp *vp, int index)
356{
357 struct camif_buffer *tmp, *buf;
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359 if (WARN_ON(list_empty(&vp->active_buf_q)))
360 return NULL;
361
362 list_for_each_entry_safe(buf, tmp, &vp->active_buf_q, list) {
363 if (buf->index == index) {
364 list_del(&buf->list);
365 vp->active_buffers--;
366 return buf;
367 }
368 }
369
370 return NULL;
371}
372
373static inline void camif_pending_queue_add(struct camif_vp *vp,
374 struct camif_buffer *buf)
375{
376 list_add_tail(&buf->list, &vp->pending_buf_q);
377}
378
379static inline struct camif_buffer *camif_pending_queue_pop(
380 struct camif_vp *vp)
381{
382 struct camif_buffer *buf = list_first_entry(&vp->pending_buf_q,
383 struct camif_buffer, list);
384 list_del(&buf->list);
385 return buf;
386}
387
388#endif
389