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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 328#define FLITE_REQ_BUFS_MIN 229#define FLITE_DEFAULT_WIDTH 64030#define FLITE_DEFAULT_HEIGHT 48031 32/* Bit index definitions for struct fimc_lite::state */33enum {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 046#define FLITE_SD_PAD_SOURCE_DMA 147#define FLITE_SD_PAD_SOURCE_ISP 248#define FLITE_SD_PADS_NUM 349 50/**51 * struct flite_drvdata - FIMC-LITE IP variant data structure52 * @max_width: maximum camera interface input width in pixels53 * @max_height: maximum camera interface input height in pixels54 * @out_width_align: minimum output width alignment in pixels55 * @win_hor_offs_align: minimum camera interface crop window horizontal56 * offset alignment in pixels57 * @out_hor_offs_align: minimum output DMA compose rectangle horizontal58 * offset alignment in pixels59 * @max_dma_bufs: number of output DMA buffer start address registers60 * @num_instances: total number of FIMC-LITE IP instances available61 */62struct 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 72struct fimc_lite_events {73 unsigned int data_overflow;74};75 76#define FLITE_MAX_PLANES 177 78/**79 * struct flite_frame - source/target frame properties80 * @f_width: full pixel width81 * @f_height: full pixel height82 * @rect: crop/composition rectangle83 * @fmt: pointer to pixel format description data structure84 */85struct 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 structure94 * @vb: vb2 buffer95 * @list: list head for the buffers queue96 * @addr: DMA buffer start address97 * @index: DMA start address register's index98 */99struct 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 structure108 * @pdev: pointer to FIMC-LITE platform device109 * @dd: SoC specific driver data structure110 * @ve: exynos video device entity structure111 * @v4l2_dev: pointer to top the level v4l2_device112 * @fh: v4l2 file handle113 * @subdev: FIMC-LITE subdev114 * @vd_pad: media (sink) pad for the capture video node115 * @subdev_pads: the subdev media pads116 * @sensor: sensor subdev attached to FIMC-LITE directly or through MIPI-CSIS117 * @ctrl_handler: v4l2 control handler118 * @test_pattern: test pattern controls119 * @index: FIMC-LITE platform device index120 * @slock: spinlock protecting this data structure and the hw registers121 * @lock: mutex serializing video device and the subdev operations122 * @clock: FIMC-LITE gate clock123 * @regs: memory mapped io registers124 * @irq_queue: interrupt handler waitqueue125 * @payload: image size in bytes (w x h x bpp)126 * @inp_frame: camera input frame structure127 * @out_frame: DMA output frame structure128 * @out_path: output data path (DMA or FIFO)129 * @source_subdev_grp_id: source subdev group id130 * @state: driver state flags131 * @pending_buf_q: pending buffers queue head132 * @active_buf_q: the queue head of buffers scheduled in hardware133 * @vb_queue: vb2 buffers queue134 * @buf_index: helps to keep track of the DMA start address register index135 * @frame_count: the captured frames counter136 * @reqbufs_count: the number of buffers requested with REQBUFS ioctl137 * @events: event info138 * @streaming: is streaming in progress?139 */140struct 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 179static 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 191static 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 197static 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 206static 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 212static 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