// SPDX-License-Identifier: GPL-2.0+ /* * V4L2 Capture IC Preprocess Subdev for Freescale i.MX5/6 SOC * * This subdevice handles capture of video frames from the CSI or VDIC, * which are routed directly to the Image Converter preprocess tasks, * for resizing, colorspace conversion, and rotation. * * Copyright (c) 2012-2017 Mentor Graphics Inc. */ #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/spinlock.h> #include <linux/timer.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-mc.h> #include <media/v4l2-subdev.h> #include <media/imx.h> #include "imx-media.h" #include "imx-ic.h" /* * Min/Max supported width and heights. * * We allow planar output, so we have to align width at the source pad * by 16 pixels to meet IDMAC alignment requirements for possible planar * output. * * TODO: move this into pad format negotiation, if capture device * has not requested a planar format, we should allow 8 pixel * alignment at the source pad. */ #define MIN_W_SINK … #define MIN_H_SINK … #define MAX_W_SINK … #define MAX_H_SINK … #define W_ALIGN_SINK … #define H_ALIGN_SINK … #define MAX_W_SRC … #define MAX_H_SRC … #define W_ALIGN_SRC … #define H_ALIGN_SRC … #define S_ALIGN … struct prp_priv { … }; static const struct prp_channels { … } prp_channel[] = …; static inline struct prp_priv *sd_to_priv(struct v4l2_subdev *sd) { … } static void prp_put_ipu_resources(struct prp_priv *priv) { … } static int prp_get_ipu_resources(struct prp_priv *priv) { … } static void prp_vb2_buf_done(struct prp_priv *priv, struct ipuv3_channel *ch) { … } static irqreturn_t prp_eof_interrupt(int irq, void *dev_id) { … } static irqreturn_t prp_nfb4eof_interrupt(int irq, void *dev_id) { … } /* * EOF timeout timer function. */ /* * EOF timeout timer function. This is an unrecoverable condition * without a stream restart. */ static void prp_eof_timeout(struct timer_list *t) { … } static void prp_setup_vb2_buf(struct prp_priv *priv, dma_addr_t *phys) { … } static void prp_unsetup_vb2_buf(struct prp_priv *priv, enum vb2_buffer_state return_status) { … } static int prp_setup_channel(struct prp_priv *priv, struct ipuv3_channel *channel, enum ipu_rotate_mode rot_mode, dma_addr_t addr0, dma_addr_t addr1, bool rot_swap_width_height) { … } static int prp_setup_rotation(struct prp_priv *priv) { … } static void prp_unsetup_rotation(struct prp_priv *priv) { … } static int prp_setup_norotation(struct prp_priv *priv) { … } static void prp_unsetup_norotation(struct prp_priv *priv) { … } static void prp_unsetup(struct prp_priv *priv, enum vb2_buffer_state state) { … } static int prp_start(struct prp_priv *priv) { … } static void prp_stop(struct prp_priv *priv) { … } static struct v4l2_mbus_framefmt * __prp_get_fmt(struct prp_priv *priv, struct v4l2_subdev_state *sd_state, unsigned int pad, enum v4l2_subdev_format_whence which) { … } /* * Applies IC resizer and IDMAC alignment restrictions to output * rectangle given the input rectangle, and depending on given * rotation mode. * * The IC resizer cannot downsize more than 4:1. Note also that * for 90 or 270 rotation, _both_ output width and height must * be aligned by W_ALIGN_SRC, because the intermediate rotation * buffer swaps output width/height, and the final output buffer * does not. * * Returns true if the output rectangle was modified. */ static bool prp_bound_align_output(struct v4l2_mbus_framefmt *outfmt, struct v4l2_mbus_framefmt *infmt, enum ipu_rotate_mode rot_mode) { … } /* * V4L2 subdev operations. */ static int prp_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { … } static int prp_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *sdformat) { … } static void prp_try_fmt(struct prp_priv *priv, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *sdformat, const struct imx_media_pixfmt **cc) { … } static int prp_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *sdformat) { … } static int prp_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fse) { … } static int prp_link_setup(struct media_entity *entity, const struct media_pad *local, const struct media_pad *remote, u32 flags) { … } static int prp_s_ctrl(struct v4l2_ctrl *ctrl) { … } static const struct v4l2_ctrl_ops prp_ctrl_ops = …; static int prp_init_controls(struct prp_priv *priv) { … } static int prp_s_stream(struct v4l2_subdev *sd, int enable) { … } static int prp_get_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_interval *fi) { … } static int prp_set_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_interval *fi) { … } static int prp_registered(struct v4l2_subdev *sd) { … } static void prp_unregistered(struct v4l2_subdev *sd) { … } static const struct v4l2_subdev_pad_ops prp_pad_ops = …; static const struct v4l2_subdev_video_ops prp_video_ops = …; static const struct media_entity_operations prp_entity_ops = …; static const struct v4l2_subdev_ops prp_subdev_ops = …; static const struct v4l2_subdev_internal_ops prp_internal_ops = …; static int prp_init(struct imx_ic_priv *ic_priv) { … } static void prp_remove(struct imx_ic_priv *ic_priv) { … } struct imx_ic_ops imx_ic_prpencvf_ops = …;
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