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12#ifndef GSC_CORE_H_
13#define GSC_CORE_H_
14
15#include <linux/delay.h>
16#include <linux/sched.h>
17#include <linux/spinlock.h>
18#include <linux/types.h>
19#include <linux/videodev2.h>
20#include <linux/io.h>
21#include <linux/pm_runtime.h>
22#include <media/videobuf2-v4l2.h>
23#include <media/v4l2-ctrls.h>
24#include <media/v4l2-device.h>
25#include <media/v4l2-mem2mem.h>
26#include <media/v4l2-mediabus.h>
27#include <media/videobuf2-dma-contig.h>
28
29#include "gsc-regs.h"
30
31#define CONFIG_VB2_GSC_DMA_CONTIG 1
32#define GSC_MODULE_NAME "exynos-gsc"
33
34#define GSC_SHUTDOWN_TIMEOUT ((100*HZ)/1000)
35#define GSC_MAX_DEVS 4
36#define GSC_MAX_CLOCKS 4
37#define GSC_M2M_BUF_NUM 0
38#define GSC_MAX_CTRL_NUM 10
39#define GSC_SC_ALIGN_4 4
40#define GSC_SC_ALIGN_2 2
41#define DEFAULT_CSC_EQ 1
42#define DEFAULT_CSC_RANGE 1
43
44#define GSC_PARAMS (1 << 0)
45#define GSC_SRC_FMT (1 << 1)
46#define GSC_DST_FMT (1 << 2)
47#define GSC_CTX_M2M (1 << 3)
48#define GSC_CTX_STOP_REQ (1 << 6)
49#define GSC_CTX_ABORT (1 << 7)
50
51enum gsc_dev_flags {
52
53 ST_M2M_OPEN,
54 ST_M2M_RUN,
55 ST_M2M_PEND,
56 ST_M2M_SUSPENDED,
57 ST_M2M_SUSPENDING,
58};
59
60enum gsc_irq {
61 GSC_IRQ_DONE,
62 GSC_IRQ_OVERRUN
63};
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72enum gsc_datapath {
73 GSC_CAMERA = 0x1,
74 GSC_DMA,
75 GSC_MIXER,
76 GSC_FIMD,
77 GSC_WRITEBACK,
78};
79
80enum gsc_color_fmt {
81 GSC_RGB = 0x1,
82 GSC_YUV420 = 0x2,
83 GSC_YUV422 = 0x4,
84 GSC_YUV444 = 0x8,
85};
86
87enum gsc_yuv_fmt {
88 GSC_LSB_Y = 0x10,
89 GSC_LSB_C,
90 GSC_CBCR = 0x20,
91 GSC_CRCB,
92};
93
94#define fh_to_ctx(__fh) container_of(__fh, struct gsc_ctx, fh)
95#define is_rgb(x) (!!((x) & 0x1))
96#define is_yuv420(x) (!!((x) & 0x2))
97#define is_yuv422(x) (!!((x) & 0x4))
98
99#define gsc_m2m_active(dev) test_bit(ST_M2M_RUN, &(dev)->state)
100#define gsc_m2m_pending(dev) test_bit(ST_M2M_PEND, &(dev)->state)
101#define gsc_m2m_opened(dev) test_bit(ST_M2M_OPEN, &(dev)->state)
102
103#define ctrl_to_ctx(__ctrl) \
104 container_of((__ctrl)->handler, struct gsc_ctx, ctrl_handler)
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117struct gsc_fmt {
118 u32 mbus_code;
119 char *name;
120 u32 pixelformat;
121 u32 color;
122 u32 yorder;
123 u32 corder;
124 u16 num_planes;
125 u16 num_comp;
126 u8 depth[VIDEO_MAX_PLANES];
127 u32 flags;
128};
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136struct gsc_input_buf {
137 struct vb2_v4l2_buffer vb;
138 struct list_head list;
139 int idx;
140};
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148struct gsc_addr {
149 dma_addr_t y;
150 dma_addr_t cb;
151 dma_addr_t cr;
152};
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160struct gsc_ctrls {
161 struct v4l2_ctrl *rotate;
162 struct v4l2_ctrl *hflip;
163 struct v4l2_ctrl *vflip;
164 struct v4l2_ctrl *global_alpha;
165};
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175struct gsc_scaler {
176 u32 pre_shfactor;
177 u32 pre_hratio;
178 u32 pre_vratio;
179 u32 main_hratio;
180 u32 main_vratio;
181};
182
183struct gsc_dev;
184
185struct gsc_ctx;
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198struct gsc_frame {
199 u32 f_width;
200 u32 f_height;
201 struct v4l2_rect crop;
202 unsigned long payload[VIDEO_MAX_PLANES];
203 struct gsc_addr addr;
204 const struct gsc_fmt *fmt;
205 u32 colorspace;
206 u8 alpha;
207};
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216struct gsc_m2m_device {
217 struct video_device *vfd;
218 struct v4l2_m2m_dev *m2m_dev;
219 struct gsc_ctx *ctx;
220 int refcnt;
221};
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239struct gsc_pix_max {
240 u16 org_scaler_bypass_w;
241 u16 org_scaler_bypass_h;
242 u16 org_scaler_input_w;
243 u16 org_scaler_input_h;
244 u16 real_rot_dis_w;
245 u16 real_rot_dis_h;
246 u16 real_rot_en_w;
247 u16 real_rot_en_h;
248 u16 target_rot_dis_w;
249 u16 target_rot_dis_h;
250 u16 target_rot_en_w;
251 u16 target_rot_en_h;
252};
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266struct gsc_pix_min {
267 u16 org_w;
268 u16 org_h;
269 u16 real_w;
270 u16 real_h;
271 u16 target_rot_dis_w;
272 u16 target_rot_dis_h;
273 u16 target_rot_en_w;
274 u16 target_rot_en_h;
275};
276
277struct gsc_pix_align {
278 u16 org_h;
279 u16 org_w;
280 u16 offset_h;
281 u16 real_w;
282 u16 real_h;
283 u16 target_w;
284 u16 target_h;
285};
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290struct gsc_variant {
291 struct gsc_pix_max *pix_max;
292 struct gsc_pix_min *pix_min;
293 struct gsc_pix_align *pix_align;
294 u16 in_buf_cnt;
295 u16 out_buf_cnt;
296 u16 sc_up_max;
297 u16 sc_down_max;
298 u16 poly_sc_down_max;
299 u16 pre_sc_down_max;
300 u16 local_sc_down;
301};
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309struct gsc_driverdata {
310 struct gsc_variant *variant[GSC_MAX_DEVS];
311 const char *clk_names[GSC_MAX_CLOCKS];
312 int num_clocks;
313 int num_entities;
314};
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330struct gsc_dev {
331 spinlock_t slock;
332 struct mutex lock;
333 struct platform_device *pdev;
334 struct gsc_variant *variant;
335 u16 id;
336 int num_clocks;
337 struct clk *clock[GSC_MAX_CLOCKS];
338 void __iomem *regs;
339 wait_queue_head_t irq_queue;
340 struct gsc_m2m_device m2m;
341 unsigned long state;
342 struct video_device vdev;
343 struct v4l2_device v4l2_dev;
344};
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362struct gsc_ctx {
363 struct gsc_frame s_frame;
364 struct gsc_frame d_frame;
365 enum gsc_datapath in_path;
366 enum gsc_datapath out_path;
367 struct gsc_scaler scaler;
368 u32 flags;
369 u32 state;
370 int rotation;
371 unsigned int hflip:1;
372 unsigned int vflip:1;
373 struct gsc_dev *gsc_dev;
374 struct v4l2_m2m_ctx *m2m_ctx;
375 struct v4l2_fh fh;
376 struct v4l2_ctrl_handler ctrl_handler;
377 struct gsc_ctrls gsc_ctrls;
378 bool ctrls_rdy;
379 enum v4l2_colorspace out_colorspace;
380};
381
382void gsc_set_prefbuf(struct gsc_dev *gsc, struct gsc_frame *frm);
383int gsc_register_m2m_device(struct gsc_dev *gsc);
384void gsc_unregister_m2m_device(struct gsc_dev *gsc);
385void gsc_m2m_job_finish(struct gsc_ctx *ctx, int vb_state);
386
387u32 get_plane_size(struct gsc_frame *fr, unsigned int plane);
388const struct gsc_fmt *get_format(int index);
389const struct gsc_fmt *find_fmt(u32 *pixelformat, u32 *mbus_code, u32 index);
390int gsc_enum_fmt_mplane(struct v4l2_fmtdesc *f);
391int gsc_try_fmt_mplane(struct gsc_ctx *ctx, struct v4l2_format *f);
392void gsc_set_frame_size(struct gsc_frame *frame, int width, int height);
393int gsc_g_fmt_mplane(struct gsc_ctx *ctx, struct v4l2_format *f);
394void gsc_check_crop_change(u32 tmp_w, u32 tmp_h, u32 *w, u32 *h);
395int gsc_g_crop(struct gsc_ctx *ctx, struct v4l2_crop *cr);
396int gsc_try_crop(struct gsc_ctx *ctx, struct v4l2_crop *cr);
397int gsc_cal_prescaler_ratio(struct gsc_variant *var, u32 src, u32 dst,
398 u32 *ratio);
399void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *sh);
400void gsc_check_src_scale_info(struct gsc_variant *var,
401 struct gsc_frame *s_frame,
402 u32 *wratio, u32 tx, u32 ty, u32 *hratio);
403int gsc_check_scaler_ratio(struct gsc_variant *var, int sw, int sh, int dw,
404 int dh, int rot, int out_path);
405int gsc_set_scaler_info(struct gsc_ctx *ctx);
406int gsc_ctrls_create(struct gsc_ctx *ctx);
407void gsc_ctrls_delete(struct gsc_ctx *ctx);
408int gsc_prepare_addr(struct gsc_ctx *ctx, struct vb2_buffer *vb,
409 struct gsc_frame *frame, struct gsc_addr *addr);
410
411static inline void gsc_ctx_state_lock_set(u32 state, struct gsc_ctx *ctx)
412{
413 unsigned long flags;
414
415 spin_lock_irqsave(&ctx->gsc_dev->slock, flags);
416 ctx->state |= state;
417 spin_unlock_irqrestore(&ctx->gsc_dev->slock, flags);
418}
419
420static inline void gsc_ctx_state_lock_clear(u32 state, struct gsc_ctx *ctx)
421{
422 unsigned long flags;
423
424 spin_lock_irqsave(&ctx->gsc_dev->slock, flags);
425 ctx->state &= ~state;
426 spin_unlock_irqrestore(&ctx->gsc_dev->slock, flags);
427}
428
429static inline int is_tiled(const struct gsc_fmt *fmt)
430{
431 return fmt->pixelformat == V4L2_PIX_FMT_NV12MT_16X16;
432}
433
434static inline void gsc_hw_enable_control(struct gsc_dev *dev, bool on)
435{
436 u32 cfg = readl(dev->regs + GSC_ENABLE);
437
438 if (on)
439 cfg |= GSC_ENABLE_ON;
440 else
441 cfg &= ~GSC_ENABLE_ON;
442
443 writel(cfg, dev->regs + GSC_ENABLE);
444}
445
446static inline int gsc_hw_get_irq_status(struct gsc_dev *dev)
447{
448 u32 cfg = readl(dev->regs + GSC_IRQ);
449 if (cfg & GSC_IRQ_STATUS_OR_IRQ)
450 return GSC_IRQ_OVERRUN;
451 else
452 return GSC_IRQ_DONE;
453
454}
455
456static inline void gsc_hw_clear_irq(struct gsc_dev *dev, int irq)
457{
458 u32 cfg = readl(dev->regs + GSC_IRQ);
459 if (irq == GSC_IRQ_OVERRUN)
460 cfg |= GSC_IRQ_STATUS_OR_IRQ;
461 else if (irq == GSC_IRQ_DONE)
462 cfg |= GSC_IRQ_STATUS_FRM_DONE_IRQ;
463 writel(cfg, dev->regs + GSC_IRQ);
464}
465
466static inline bool gsc_ctx_state_is_set(u32 mask, struct gsc_ctx *ctx)
467{
468 unsigned long flags;
469 bool ret;
470
471 spin_lock_irqsave(&ctx->gsc_dev->slock, flags);
472 ret = (ctx->state & mask) == mask;
473 spin_unlock_irqrestore(&ctx->gsc_dev->slock, flags);
474 return ret;
475}
476
477static inline struct gsc_frame *ctx_get_frame(struct gsc_ctx *ctx,
478 enum v4l2_buf_type type)
479{
480 struct gsc_frame *frame;
481
482 if (V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE == type) {
483 frame = &ctx->s_frame;
484 } else if (V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE == type) {
485 frame = &ctx->d_frame;
486 } else {
487 pr_err("Wrong buffer/video queue type (%d)", type);
488 return ERR_PTR(-EINVAL);
489 }
490
491 return frame;
492}
493
494void gsc_hw_set_sw_reset(struct gsc_dev *dev);
495int gsc_wait_reset(struct gsc_dev *dev);
496
497void gsc_hw_set_frm_done_irq_mask(struct gsc_dev *dev, bool mask);
498void gsc_hw_set_gsc_irq_enable(struct gsc_dev *dev, bool mask);
499void gsc_hw_set_input_buf_masking(struct gsc_dev *dev, u32 shift, bool enable);
500void gsc_hw_set_output_buf_masking(struct gsc_dev *dev, u32 shift, bool enable);
501void gsc_hw_set_input_addr(struct gsc_dev *dev, struct gsc_addr *addr,
502 int index);
503void gsc_hw_set_output_addr(struct gsc_dev *dev, struct gsc_addr *addr,
504 int index);
505void gsc_hw_set_input_path(struct gsc_ctx *ctx);
506void gsc_hw_set_in_size(struct gsc_ctx *ctx);
507void gsc_hw_set_in_image_rgb(struct gsc_ctx *ctx);
508void gsc_hw_set_in_image_format(struct gsc_ctx *ctx);
509void gsc_hw_set_output_path(struct gsc_ctx *ctx);
510void gsc_hw_set_out_size(struct gsc_ctx *ctx);
511void gsc_hw_set_out_image_rgb(struct gsc_ctx *ctx);
512void gsc_hw_set_out_image_format(struct gsc_ctx *ctx);
513void gsc_hw_set_prescaler(struct gsc_ctx *ctx);
514void gsc_hw_set_mainscaler(struct gsc_ctx *ctx);
515void gsc_hw_set_rotation(struct gsc_ctx *ctx);
516void gsc_hw_set_global_alpha(struct gsc_ctx *ctx);
517void gsc_hw_set_sfr_update(struct gsc_ctx *ctx);
518
519#endif
520