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ispstat.h
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1 /*
2  * ispstat.h
3  *
4  * TI OMAP3 ISP - Statistics core
5  *
6  * Copyright (C) 2010 Nokia Corporation
7  * Copyright (C) 2009 Texas Instruments, Inc
8  *
9  * Contacts: David Cohen <[email protected]>
10  * Laurent Pinchart <[email protected]>
11  * Sakari Ailus <[email protected]>
12  *
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License version 2 as
15  * published by the Free Software Foundation.
16  *
17  * This program is distributed in the hope that it will be useful, but
18  * WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20  * General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License
23  * along with this program; if not, write to the Free Software
24  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
25  * 02110-1301 USA
26  */
27 
28 #ifndef OMAP3_ISP_STAT_H
29 #define OMAP3_ISP_STAT_H
30 
31 #include <linux/types.h>
32 #include <linux/omap3isp.h>
33 #include <plat/dma.h>
34 #include <media/v4l2-event.h>
35 
36 #include "isp.h"
37 #include "ispvideo.h"
38 
39 #define STAT_MAX_BUFS 5
40 #define STAT_NEVENTS 8
41 
42 #define STAT_BUF_DONE 0 /* Buffer is ready */
43 #define STAT_NO_BUF 1 /* An error has occurred */
44 #define STAT_BUF_WAITING_DMA 2 /* Histogram only: DMA is running */
45 
46 struct ispstat;
47 
48 struct ispstat_buffer {
49  unsigned long iommu_addr;
50  struct iovm_struct *iovm;
51  void *virt_addr;
52  dma_addr_t dma_addr;
53  struct timeval ts;
54  u32 buf_size;
55  u32 frame_number;
56  u16 config_counter;
57  u8 empty;
58 };
59 
60 struct ispstat_ops {
61  /*
62  * Validate new params configuration.
63  * new_conf->buf_size value must be changed to the exact buffer size
64  * necessary for the new configuration if it's smaller.
65  */
66  int (*validate_params)(struct ispstat *stat, void *new_conf);
67 
68  /*
69  * Save new params configuration.
70  * stat->priv->buf_size value must be set to the exact buffer size for
71  * the new configuration.
72  * stat->update is set to 1 if new configuration is different than
73  * current one.
74  */
75  void (*set_params)(struct ispstat *stat, void *new_conf);
76 
77  /* Apply stored configuration. */
78  void (*setup_regs)(struct ispstat *stat, void *priv);
79 
80  /* Enable/Disable module. */
81  void (*enable)(struct ispstat *stat, int enable);
82 
83  /* Verify is module is busy. */
84  int (*busy)(struct ispstat *stat);
85 
86  /* Used for specific operations during generic buf process task. */
87  int (*buf_process)(struct ispstat *stat);
88 };
89 
90 enum ispstat_state_t {
91  ISPSTAT_DISABLED = 0,
92  ISPSTAT_DISABLING,
93  ISPSTAT_ENABLED,
94  ISPSTAT_ENABLING,
95  ISPSTAT_SUSPENDED,
96 };
97 
98 struct ispstat {
99  struct v4l2_subdev subdev;
100  struct media_pad pad; /* sink pad */
101 
102  /* Control */
103  unsigned configured:1;
104  unsigned update:1;
105  unsigned buf_processing:1;
106  unsigned sbl_ovl_recover:1;
107  u8 inc_config;
108  atomic_t buf_err;
109  enum ispstat_state_t state; /* enabling/disabling state */
110  struct omap_dma_channel_params dma_config;
111  struct isp_device *isp;
112  void *priv; /* pointer to priv config struct */
113  void *recover_priv; /* pointer to recover priv configuration */
114  struct mutex ioctl_lock; /* serialize private ioctl */
115 
116  const struct ispstat_ops *ops;
117 
118  /* Buffer */
119  u8 wait_acc_frames;
120  u16 config_counter;
121  u32 frame_number;
122  u32 buf_size;
123  u32 buf_alloc_size;
124  int dma_ch;
125  unsigned long event_type;
126  struct ispstat_buffer *buf;
127  struct ispstat_buffer *active_buf;
128  struct ispstat_buffer *locked_buf;
129 };
130 
131 struct ispstat_generic_config {
132  /*
133  * Fields must be in the same order as in:
134  * - omap3isp_h3a_aewb_config
135  * - omap3isp_h3a_af_config
136  * - omap3isp_hist_config
137  */
138  u32 buf_size;
139  u16 config_counter;
140 };
141 
142 int omap3isp_stat_config(struct ispstat *stat, void *new_conf);
143 int omap3isp_stat_request_statistics(struct ispstat *stat,
144  struct omap3isp_stat_data *data);
145 int omap3isp_stat_init(struct ispstat *stat, const char *name,
146  const struct v4l2_subdev_ops *sd_ops);
147 void omap3isp_stat_cleanup(struct ispstat *stat);
148 int omap3isp_stat_subscribe_event(struct v4l2_subdev *subdev,
149  struct v4l2_fh *fh,
150  struct v4l2_event_subscription *sub);
151 int omap3isp_stat_unsubscribe_event(struct v4l2_subdev *subdev,
152  struct v4l2_fh *fh,
153  struct v4l2_event_subscription *sub);
154 int omap3isp_stat_s_stream(struct v4l2_subdev *subdev, int enable);
155 
156 int omap3isp_stat_busy(struct ispstat *stat);
157 int omap3isp_stat_pcr_busy(struct ispstat *stat);
158 void omap3isp_stat_suspend(struct ispstat *stat);
159 void omap3isp_stat_resume(struct ispstat *stat);
160 int omap3isp_stat_enable(struct ispstat *stat, u8 enable);
161 void omap3isp_stat_sbl_overflow(struct ispstat *stat);
162 void omap3isp_stat_isr(struct ispstat *stat);
163 void omap3isp_stat_isr_frame_sync(struct ispstat *stat);
164 void omap3isp_stat_dma_isr(struct ispstat *stat);
165 int omap3isp_stat_register_entities(struct ispstat *stat,
166  struct v4l2_device *vdev);
167 void omap3isp_stat_unregister_entities(struct ispstat *stat);
168 
169 #endif /* OMAP3_ISP_STAT_H */
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