1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2012 Samsung Electronics Co., Ltd. 4 */ 5 6 #ifndef FIMC_LITE_H_ 7 #define FIMC_LITE_H_ 8 9 #include <linux/sizes.h> 10 #include <linux/io.h> 11 #include <linux/irqreturn.h> 12 #include <linux/platform_device.h> 13 #include <linux/sched.h> 14 #include <linux/spinlock.h> 15 #include <linux/types.h> 16 #include <linux/videodev2.h> 17 18 #include <media/media-entity.h> 19 #include <media/videobuf2-v4l2.h> 20 #include <media/v4l2-ctrls.h> 21 #include <media/v4l2-device.h> 22 #include <media/v4l2-mediabus.h> 23 #include <media/drv-intf/exynos-fimc.h> 24 25 #define FIMC_LITE_DRV_NAME "exynos-fimc-lite" 26 #define FLITE_CLK_NAME "flite" 27 #define FIMC_LITE_MAX_DEVS 3 28 #define FLITE_REQ_BUFS_MIN 2 29 #define FLITE_DEFAULT_WIDTH 640 30 #define FLITE_DEFAULT_HEIGHT 480 31 32 /* Bit index definitions for struct fimc_lite::state */ 33 enum { 34 ST_FLITE_LPM, 35 ST_FLITE_PENDING, 36 ST_FLITE_RUN, 37 ST_FLITE_STREAM, 38 ST_FLITE_SUSPENDED, 39 ST_FLITE_OFF, 40 ST_FLITE_IN_USE, 41 ST_FLITE_CONFIG, 42 ST_SENSOR_STREAM, 43 }; 44 45 #define FLITE_SD_PAD_SINK 0 46 #define FLITE_SD_PAD_SOURCE_DMA 1 47 #define FLITE_SD_PAD_SOURCE_ISP 2 48 #define FLITE_SD_PADS_NUM 3 49 50 /** 51 * struct flite_drvdata - FIMC-LITE IP variant data structure 52 * @max_width: maximum camera interface input width in pixels 53 * @max_height: maximum camera interface input height in pixels 54 * @out_width_align: minimum output width alignment in pixels 55 * @win_hor_offs_align: minimum camera interface crop window horizontal 56 * offset alignment in pixels 57 * @out_hor_offs_align: minimum output DMA compose rectangle horizontal 58 * offset alignment in pixels 59 * @max_dma_bufs: number of output DMA buffer start address registers 60 * @num_instances: total number of FIMC-LITE IP instances available 61 */ 62 struct flite_drvdata { 63 unsigned short max_width; 64 unsigned short max_height; 65 unsigned short out_width_align; 66 unsigned short win_hor_offs_align; 67 unsigned short out_hor_offs_align; 68 unsigned short max_dma_bufs; 69 unsigned short num_instances; 70 }; 71 72 struct fimc_lite_events { 73 unsigned int data_overflow; 74 }; 75 76 #define FLITE_MAX_PLANES 1 77 78 /** 79 * struct flite_frame - source/target frame properties 80 * @f_width: full pixel width 81 * @f_height: full pixel height 82 * @rect: crop/composition rectangle 83 * @fmt: pointer to pixel format description data structure 84 */ 85 struct flite_frame { 86 u16 f_width; 87 u16 f_height; 88 struct v4l2_rect rect; 89 const struct fimc_fmt *fmt; 90 }; 91 92 /** 93 * struct flite_buffer - video buffer structure 94 * @vb: vb2 buffer 95 * @list: list head for the buffers queue 96 * @addr: DMA buffer start address 97 * @index: DMA start address register's index 98 */ 99 struct flite_buffer { 100 struct vb2_v4l2_buffer vb; 101 struct list_head list; 102 dma_addr_t addr; 103 unsigned short index; 104 }; 105 106 /** 107 * struct fimc_lite - fimc lite structure 108 * @pdev: pointer to FIMC-LITE platform device 109 * @dd: SoC specific driver data structure 110 * @ve: exynos video device entity structure 111 * @v4l2_dev: pointer to top the level v4l2_device 112 * @fh: v4l2 file handle 113 * @subdev: FIMC-LITE subdev 114 * @vd_pad: media (sink) pad for the capture video node 115 * @subdev_pads: the subdev media pads 116 * @sensor: sensor subdev attached to FIMC-LITE directly or through MIPI-CSIS 117 * @ctrl_handler: v4l2 control handler 118 * @test_pattern: test pattern controls 119 * @index: FIMC-LITE platform device index 120 * @slock: spinlock protecting this data structure and the hw registers 121 * @lock: mutex serializing video device and the subdev operations 122 * @clock: FIMC-LITE gate clock 123 * @regs: memory mapped io registers 124 * @irq_queue: interrupt handler waitqueue 125 * @payload: image size in bytes (w x h x bpp) 126 * @inp_frame: camera input frame structure 127 * @out_frame: DMA output frame structure 128 * @out_path: output data path (DMA or FIFO) 129 * @source_subdev_grp_id: source subdev group id 130 * @state: driver state flags 131 * @pending_buf_q: pending buffers queue head 132 * @active_buf_q: the queue head of buffers scheduled in hardware 133 * @vb_queue: vb2 buffers queue 134 * @buf_index: helps to keep track of the DMA start address register index 135 * @frame_count: the captured frames counter 136 * @reqbufs_count: the number of buffers requested with REQBUFS ioctl 137 * @events: event info 138 * @streaming: is streaming in progress? 139 */ 140 struct fimc_lite { 141 struct platform_device *pdev; 142 struct flite_drvdata *dd; 143 struct exynos_video_entity ve; 144 struct v4l2_device *v4l2_dev; 145 struct v4l2_fh fh; 146 struct v4l2_subdev subdev; 147 struct media_pad vd_pad; 148 struct media_pad subdev_pads[FLITE_SD_PADS_NUM]; 149 struct v4l2_subdev *sensor; 150 struct v4l2_ctrl_handler ctrl_handler; 151 struct v4l2_ctrl *test_pattern; 152 int index; 153 154 struct mutex lock; 155 spinlock_t slock; 156 157 struct clk *clock; 158 void __iomem *regs; 159 wait_queue_head_t irq_queue; 160 161 unsigned long payload[FLITE_MAX_PLANES]; 162 struct flite_frame inp_frame; 163 struct flite_frame out_frame; 164 atomic_t out_path; 165 unsigned int source_subdev_grp_id; 166 167 unsigned long state; 168 struct list_head pending_buf_q; 169 struct list_head active_buf_q; 170 struct vb2_queue vb_queue; 171 unsigned short buf_index; 172 unsigned int frame_count; 173 unsigned int reqbufs_count; 174 175 struct fimc_lite_events events; 176 bool streaming; 177 }; 178 179 static inline bool fimc_lite_active(struct fimc_lite *fimc) 180 { 181 unsigned long flags; 182 bool ret; 183 184 spin_lock_irqsave(&fimc->slock, flags); 185 ret = fimc->state & (1 << ST_FLITE_RUN) || 186 fimc->state & (1 << ST_FLITE_PENDING); 187 spin_unlock_irqrestore(&fimc->slock, flags); 188 return ret; 189 } 190 191 static inline void fimc_lite_active_queue_add(struct fimc_lite *dev, 192 struct flite_buffer *buf) 193 { 194 list_add_tail(&buf->list, &dev->active_buf_q); 195 } 196 197 static inline struct flite_buffer *fimc_lite_active_queue_pop( 198 struct fimc_lite *dev) 199 { 200 struct flite_buffer *buf = list_entry(dev->active_buf_q.next, 201 struct flite_buffer, list); 202 list_del(&buf->list); 203 return buf; 204 } 205 206 static inline void fimc_lite_pending_queue_add(struct fimc_lite *dev, 207 struct flite_buffer *buf) 208 { 209 list_add_tail(&buf->list, &dev->pending_buf_q); 210 } 211 212 static inline struct flite_buffer *fimc_lite_pending_queue_pop( 213 struct fimc_lite *dev) 214 { 215 struct flite_buffer *buf = list_entry(dev->pending_buf_q.next, 216 struct flite_buffer, list); 217 list_del(&buf->list); 218 return buf; 219 } 220 221 #endif /* FIMC_LITE_H_ */ 222