1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * ispccdc.h 4 * 5 * TI OMAP3 ISP - CCDC module 6 * 7 * Copyright (C) 2009-2010 Nokia Corporation 8 * Copyright (C) 2009 Texas Instruments, Inc. 9 * 10 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> 11 * Sakari Ailus <sakari.ailus@iki.fi> 12 */ 13 14 #ifndef OMAP3_ISP_CCDC_H 15 #define OMAP3_ISP_CCDC_H 16 17 #include <linux/omap3isp.h> 18 #include <linux/workqueue.h> 19 20 #include "ispvideo.h" 21 22 enum ccdc_input_entity { 23 CCDC_INPUT_NONE, 24 CCDC_INPUT_PARALLEL, 25 CCDC_INPUT_CSI2A, 26 CCDC_INPUT_CCP2B, 27 CCDC_INPUT_CSI2C 28 }; 29 30 #define CCDC_OUTPUT_MEMORY (1 << 0) 31 #define CCDC_OUTPUT_PREVIEW (1 << 1) 32 #define CCDC_OUTPUT_RESIZER (1 << 2) 33 34 #define OMAP3ISP_CCDC_NEVENTS 16 35 36 struct ispccdc_fpc { 37 void *addr; 38 dma_addr_t dma; 39 unsigned int fpnum; 40 }; 41 42 enum ispccdc_lsc_state { 43 LSC_STATE_STOPPED = 0, 44 LSC_STATE_STOPPING = 1, 45 LSC_STATE_RUNNING = 2, 46 LSC_STATE_RECONFIG = 3, 47 }; 48 49 struct ispccdc_lsc_config_req { 50 struct list_head list; 51 struct omap3isp_ccdc_lsc_config config; 52 unsigned char enable; 53 54 struct { 55 void *addr; 56 dma_addr_t dma; 57 struct sg_table sgt; 58 } table; 59 }; 60 61 /* 62 * ispccdc_lsc - CCDC LSC parameters 63 */ 64 struct ispccdc_lsc { 65 enum ispccdc_lsc_state state; 66 struct work_struct table_work; 67 68 /* LSC queue of configurations */ 69 spinlock_t req_lock; 70 struct ispccdc_lsc_config_req *request; /* requested configuration */ 71 struct ispccdc_lsc_config_req *active; /* active configuration */ 72 struct list_head free_queue; /* configurations for freeing */ 73 }; 74 75 #define CCDC_STOP_NOT_REQUESTED 0x00 76 #define CCDC_STOP_REQUEST 0x01 77 #define CCDC_STOP_EXECUTED (0x02 | CCDC_STOP_REQUEST) 78 #define CCDC_STOP_CCDC_FINISHED 0x04 79 #define CCDC_STOP_LSC_FINISHED 0x08 80 #define CCDC_STOP_FINISHED \ 81 (CCDC_STOP_EXECUTED | CCDC_STOP_CCDC_FINISHED | CCDC_STOP_LSC_FINISHED) 82 83 #define CCDC_EVENT_VD1 0x10 84 #define CCDC_EVENT_VD0 0x20 85 #define CCDC_EVENT_LSC_DONE 0x40 86 87 /* Sink and source CCDC pads */ 88 #define CCDC_PAD_SINK 0 89 #define CCDC_PAD_SOURCE_OF 1 90 #define CCDC_PAD_SOURCE_VP 2 91 #define CCDC_PADS_NUM 3 92 93 #define CCDC_FIELD_TOP 1 94 #define CCDC_FIELD_BOTTOM 2 95 #define CCDC_FIELD_BOTH 3 96 97 /* 98 * struct isp_ccdc_device - Structure for the CCDC module to store its own 99 * information 100 * @subdev: V4L2 subdevice 101 * @pads: Sink and source media entity pads 102 * @formats: Active video formats 103 * @crop: Active crop rectangle on the OF source pad 104 * @input: Active input 105 * @output: Active outputs 106 * @video_out: Output video node 107 * @alaw: A-law compression enabled (1) or disabled (0) 108 * @lpf: Low pass filter enabled (1) or disabled (0) 109 * @obclamp: Optical-black clamp enabled (1) or disabled (0) 110 * @fpc_en: Faulty pixels correction enabled (1) or disabled (0) 111 * @blcomp: Black level compensation configuration 112 * @clamp: Optical-black or digital clamp configuration 113 * @fpc: Faulty pixels correction configuration 114 * @lsc: Lens shading compensation configuration 115 * @update: Bitmask of controls to update during the next interrupt 116 * @shadow_update: Controls update in progress by userspace 117 * @bt656: Whether the input interface uses BT.656 synchronization 118 * @fields: The fields (CCDC_FIELD_*) stored in the current buffer 119 * @underrun: A buffer underrun occurred and a new buffer has been queued 120 * @state: Streaming state 121 * @lock: Serializes shadow_update with interrupt handler 122 * @wait: Wait queue used to stop the module 123 * @stopping: Stopping state 124 * @running: Is the CCDC hardware running 125 * @ioctl_lock: Serializes ioctl calls and LSC requests freeing 126 */ 127 struct isp_ccdc_device { 128 struct v4l2_subdev subdev; 129 struct media_pad pads[CCDC_PADS_NUM]; 130 struct v4l2_mbus_framefmt formats[CCDC_PADS_NUM]; 131 struct v4l2_rect crop; 132 133 enum ccdc_input_entity input; 134 unsigned int output; 135 struct isp_video video_out; 136 137 unsigned int alaw:1, 138 lpf:1, 139 obclamp:1, 140 fpc_en:1; 141 struct omap3isp_ccdc_blcomp blcomp; 142 struct omap3isp_ccdc_bclamp clamp; 143 struct ispccdc_fpc fpc; 144 struct ispccdc_lsc lsc; 145 unsigned int update; 146 unsigned int shadow_update; 147 148 bool bt656; 149 unsigned int fields; 150 151 unsigned int underrun:1; 152 enum isp_pipeline_stream_state state; 153 spinlock_t lock; 154 wait_queue_head_t wait; 155 unsigned int stopping; 156 bool running; 157 struct mutex ioctl_lock; 158 }; 159 160 struct isp_device; 161 162 int omap3isp_ccdc_init(struct isp_device *isp); 163 void omap3isp_ccdc_cleanup(struct isp_device *isp); 164 int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc, 165 struct v4l2_device *vdev); 166 void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc); 167 168 int omap3isp_ccdc_busy(struct isp_ccdc_device *isp_ccdc); 169 int omap3isp_ccdc_isr(struct isp_ccdc_device *isp_ccdc, u32 events); 170 void omap3isp_ccdc_restore_context(struct isp_device *isp); 171 void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc, 172 unsigned int *max_rate); 173 174 #endif /* OMAP3_ISP_CCDC_H */ 175