4 * TI OMAP3 ISP - CCDC module
6 * Copyright (C) 2009-2010 Nokia Corporation
7 * Copyright (C) 2009 Texas Instruments, Inc.
9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
10 * Sakari Ailus <sakari.ailus@iki.fi>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
27 #ifndef OMAP3_ISP_CCDC_H
28 #define OMAP3_ISP_CCDC_H
30 #include <linux/omap3isp.h>
31 #include <linux/workqueue.h>
35 enum ccdc_input_entity {
43 #define CCDC_OUTPUT_MEMORY (1 << 0)
44 #define CCDC_OUTPUT_PREVIEW (1 << 1)
45 #define CCDC_OUTPUT_RESIZER (1 << 2)
47 #define OMAP3ISP_CCDC_NEVENTS 16
49 enum ispccdc_lsc_state {
50 LSC_STATE_STOPPED = 0,
51 LSC_STATE_STOPPING = 1,
52 LSC_STATE_RUNNING = 2,
53 LSC_STATE_RECONFIG = 3,
56 struct ispccdc_lsc_config_req {
57 struct list_head list;
58 struct omap3isp_ccdc_lsc_config config;
61 struct iovm_struct *iovm;
65 * ispccdc_lsc - CCDC LSC parameters
68 enum ispccdc_lsc_state state;
69 struct work_struct table_work;
71 /* LSC queue of configurations */
73 struct ispccdc_lsc_config_req *request; /* requested configuration */
74 struct ispccdc_lsc_config_req *active; /* active configuration */
75 struct list_head free_queue; /* configurations for freeing */
78 #define CCDC_STOP_NOT_REQUESTED 0x00
79 #define CCDC_STOP_REQUEST 0x01
80 #define CCDC_STOP_EXECUTED (0x02 | CCDC_STOP_REQUEST)
81 #define CCDC_STOP_CCDC_FINISHED 0x04
82 #define CCDC_STOP_LSC_FINISHED 0x08
83 #define CCDC_STOP_FINISHED \
84 (CCDC_STOP_EXECUTED | CCDC_STOP_CCDC_FINISHED | CCDC_STOP_LSC_FINISHED)
86 #define CCDC_EVENT_VD1 0x10
87 #define CCDC_EVENT_VD0 0x20
88 #define CCDC_EVENT_LSC_DONE 0x40
90 /* Sink and source CCDC pads */
91 #define CCDC_PAD_SINK 0
92 #define CCDC_PAD_SOURCE_OF 1
93 #define CCDC_PAD_SOURCE_VP 2
94 #define CCDC_PADS_NUM 3
97 * struct isp_ccdc_device - Structure for the CCDC module to store its own
99 * @subdev: V4L2 subdevice
100 * @pads: Sink and source media entity pads
101 * @formats: Active video formats
102 * @crop: Active crop rectangle on the OF source pad
103 * @input: Active input
104 * @output: Active outputs
105 * @video_out: Output video node
106 * @alaw: A-law compression enabled (1) or disabled (0)
107 * @lpf: Low pass filter enabled (1) or disabled (0)
108 * @obclamp: Optical-black clamp enabled (1) or disabled (0)
109 * @fpc_en: Faulty pixels correction enabled (1) or disabled (0)
110 * @blcomp: Black level compensation configuration
111 * @clamp: Optical-black or digital clamp configuration
112 * @fpc: Faulty pixels correction configuration
113 * @lsc: Lens shading compensation configuration
114 * @update: Bitmask of controls to update during the next interrupt
115 * @shadow_update: Controls update in progress by userspace
116 * @underrun: A buffer underrun occurred and a new buffer has been queued
117 * @state: Streaming state
118 * @lock: Serializes shadow_update with interrupt handler
119 * @wait: Wait queue used to stop the module
120 * @stopping: Stopping state
121 * @ioctl_lock: Serializes ioctl calls and LSC requests freeing
123 struct isp_ccdc_device {
124 struct v4l2_subdev subdev;
125 struct media_pad pads[CCDC_PADS_NUM];
126 struct v4l2_mbus_framefmt formats[CCDC_PADS_NUM];
127 struct v4l2_rect crop;
129 enum ccdc_input_entity input;
131 struct isp_video video_out;
137 struct omap3isp_ccdc_blcomp blcomp;
138 struct omap3isp_ccdc_bclamp clamp;
139 struct omap3isp_ccdc_fpc fpc;
140 struct ispccdc_lsc lsc;
142 unsigned int shadow_update;
144 unsigned int underrun:1;
145 enum isp_pipeline_stream_state state;
147 wait_queue_head_t wait;
148 unsigned int stopping;
149 struct mutex ioctl_lock;
154 int omap3isp_ccdc_init(struct isp_device *isp);
155 void omap3isp_ccdc_cleanup(struct isp_device *isp);
156 int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc,
157 struct v4l2_device *vdev);
158 void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc);
160 int omap3isp_ccdc_busy(struct isp_ccdc_device *isp_ccdc);
161 int omap3isp_ccdc_isr(struct isp_ccdc_device *isp_ccdc, u32 events);
162 void omap3isp_ccdc_restore_context(struct isp_device *isp);
163 void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc,
164 unsigned int *max_rate);
166 #endif /* OMAP3_ISP_CCDC_H */