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Date: Sat, 10 Aug 2019 17:14:32 +0300
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Shuah Khan <skhan@...uxfoundation.org>
Cc: mchehab@...nel.org, helen.koike@...labora.com, hverkuil@...all.nl,
linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Subject: Re: [PATCH 1/3] media: vimc: move private defines to a common header
Hi Shuah,
Thank you for the patch.
On Fri, Aug 09, 2019 at 03:45:41PM -0600, Shuah Khan wrote:
> In preparation for collapsing the component driver structure into
> a monolith, move private device structure defines to a new common
> header file.
Apart from the vimc_device structure, this doesn't seem to be needed.
I'd rather keep each structure private to the .c file that handles it,
and only share vimc_device globally.
> Signed-off-by: Shuah Khan <skhan@...uxfoundation.org>
> ---
> drivers/media/platform/vimc/vimc-capture.c | 21 +----
> drivers/media/platform/vimc/vimc-core.c | 18 +---
> drivers/media/platform/vimc/vimc-debayer.c | 16 +---
> drivers/media/platform/vimc/vimc-scaler.c | 15 +--
> drivers/media/platform/vimc/vimc-sensor.c | 13 +--
> drivers/media/platform/vimc/vimc.h | 102 +++++++++++++++++++++
> 6 files changed, 107 insertions(+), 78 deletions(-)
> create mode 100644 drivers/media/platform/vimc/vimc.h
>
> diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
> index 664855708fdf..c52fc5d97c2d 100644
> --- a/drivers/media/platform/vimc/vimc-capture.c
> +++ b/drivers/media/platform/vimc/vimc-capture.c
> @@ -13,6 +13,7 @@
> #include <media/videobuf2-core.h>
> #include <media/videobuf2-vmalloc.h>
>
> +#include "vimc.h"
> #include "vimc-common.h"
> #include "vimc-streamer.h"
>
> @@ -44,26 +45,6 @@ static const u32 vimc_cap_supported_pixfmt[] = {
> V4L2_PIX_FMT_SRGGB12,
> };
>
> -struct vimc_cap_device {
> - struct vimc_ent_device ved;
> - struct video_device vdev;
> - struct device *dev;
> - struct v4l2_pix_format format;
> - struct vb2_queue queue;
> - struct list_head buf_list;
> - /*
> - * NOTE: in a real driver, a spin lock must be used to access the
> - * queue because the frames are generated from a hardware interruption
> - * and the isr is not allowed to sleep.
> - * Even if it is not necessary a spinlock in the vimc driver, we
> - * use it here as a code reference
> - */
> - spinlock_t qlock;
> - struct mutex lock;
> - u32 sequence;
> - struct vimc_stream stream;
> -};
> -
> static const struct v4l2_pix_format fmt_default = {
> .width = 640,
> .height = 480,
> diff --git a/drivers/media/platform/vimc/vimc-core.c b/drivers/media/platform/vimc/vimc-core.c
> index 571c55aa0e16..c9b351472272 100644
> --- a/drivers/media/platform/vimc/vimc-core.c
> +++ b/drivers/media/platform/vimc/vimc-core.c
> @@ -12,6 +12,7 @@
> #include <media/media-device.h>
> #include <media/v4l2-device.h>
>
> +#include "vimc.h"
> #include "vimc-common.h"
>
> #define VIMC_MDEV_MODEL_NAME "VIMC MDEV"
> @@ -24,23 +25,6 @@
> .flags = link_flags, \
> }
>
> -struct vimc_device {
> - /* The platform device */
> - struct platform_device pdev;
> -
> - /* The pipeline configuration */
> - const struct vimc_pipeline_config *pipe_cfg;
> -
> - /* The Associated media_device parent */
> - struct media_device mdev;
> -
> - /* Internal v4l2 parent device*/
> - struct v4l2_device v4l2_dev;
> -
> - /* Subdevices */
> - struct platform_device **subdevs;
> -};
> -
> /* Structure which describes individual configuration for each entity */
> struct vimc_ent_config {
> const char *name;
> diff --git a/drivers/media/platform/vimc/vimc-debayer.c b/drivers/media/platform/vimc/vimc-debayer.c
> index 00598fbf3cba..750752bb173c 100644
> --- a/drivers/media/platform/vimc/vimc-debayer.c
> +++ b/drivers/media/platform/vimc/vimc-debayer.c
> @@ -13,6 +13,7 @@
> #include <linux/v4l2-mediabus.h>
> #include <media/v4l2-subdev.h>
>
> +#include "vimc.h"
> #include "vimc-common.h"
>
> #define VIMC_DEB_DRV_NAME "vimc-debayer"
> @@ -44,21 +45,6 @@ struct vimc_deb_pix_map {
> enum vimc_deb_rgb_colors order[2][2];
> };
>
> -struct vimc_deb_device {
> - struct vimc_ent_device ved;
> - struct v4l2_subdev sd;
> - struct device *dev;
> - /* The active format */
> - struct v4l2_mbus_framefmt sink_fmt;
> - u32 src_code;
> - void (*set_rgb_src)(struct vimc_deb_device *vdeb, unsigned int lin,
> - unsigned int col, unsigned int rgb[3]);
> - /* Values calculated when the stream starts */
> - u8 *src_frame;
> - const struct vimc_deb_pix_map *sink_pix_map;
> - unsigned int sink_bpp;
> -};
> -
> static const struct v4l2_mbus_framefmt sink_fmt_default = {
> .width = 640,
> .height = 480,
> diff --git a/drivers/media/platform/vimc/vimc-scaler.c b/drivers/media/platform/vimc/vimc-scaler.c
> index c7123a45c55b..fe99b9102ada 100644
> --- a/drivers/media/platform/vimc/vimc-scaler.c
> +++ b/drivers/media/platform/vimc/vimc-scaler.c
> @@ -13,6 +13,7 @@
> #include <linux/v4l2-mediabus.h>
> #include <media/v4l2-subdev.h>
>
> +#include "vimc.h"
> #include "vimc-common.h"
>
> #define VIMC_SCA_DRV_NAME "vimc-scaler"
> @@ -31,20 +32,6 @@ static const u32 vimc_sca_supported_pixfmt[] = {
> V4L2_PIX_FMT_ARGB32,
> };
>
> -struct vimc_sca_device {
> - struct vimc_ent_device ved;
> - struct v4l2_subdev sd;
> - struct device *dev;
> - /* NOTE: the source fmt is the same as the sink
> - * with the width and hight multiplied by mult
> - */
> - struct v4l2_mbus_framefmt sink_fmt;
> - /* Values calculated when the stream starts */
> - u8 *src_frame;
> - unsigned int src_line_size;
> - unsigned int bpp;
> -};
> -
> static const struct v4l2_mbus_framefmt sink_fmt_default = {
> .width = 640,
> .height = 480,
> diff --git a/drivers/media/platform/vimc/vimc-sensor.c b/drivers/media/platform/vimc/vimc-sensor.c
> index 51359472eef2..6c57b1e262f9 100644
> --- a/drivers/media/platform/vimc/vimc-sensor.c
> +++ b/drivers/media/platform/vimc/vimc-sensor.c
> @@ -16,22 +16,11 @@
> #include <media/v4l2-subdev.h>
> #include <media/tpg/v4l2-tpg.h>
>
> +#include "vimc.h"
> #include "vimc-common.h"
>
> #define VIMC_SEN_DRV_NAME "vimc-sensor"
>
> -struct vimc_sen_device {
> - struct vimc_ent_device ved;
> - struct v4l2_subdev sd;
> - struct device *dev;
> - struct tpg_data tpg;
> - struct task_struct *kthread_sen;
> - u8 *frame;
> - /* The active format */
> - struct v4l2_mbus_framefmt mbus_format;
> - struct v4l2_ctrl_handler hdl;
> -};
> -
> static const struct v4l2_mbus_framefmt fmt_default = {
> .width = 640,
> .height = 480,
> diff --git a/drivers/media/platform/vimc/vimc.h b/drivers/media/platform/vimc/vimc.h
> new file mode 100644
> index 000000000000..a5adebdda941
> --- /dev/null
> +++ b/drivers/media/platform/vimc/vimc.h
> @@ -0,0 +1,102 @@
> +/* SPDX-License-Identifier: GPL-2.0-or-later */
> +/*
> + *
> + * Copyright (C) 2019 Shuah Khan <skhan@...uxfoundation.org>
> + *
> + */
> +
> +/*
> + * This file defines vimc driver device and sub-device structures.
> + */
> +
> +#ifndef _VIMC_H_
> +#define _VIMC_H_
> +
> +#include <linux/platform_device.h>
> +#include <media/media-device.h>
> +#include <media/v4l2-device.h>
> +#include <media/videobuf2-core.h>
> +#include <media/tpg/v4l2-tpg.h>
> +#include <media/v4l2-ctrls.h>
> +
> +#include "vimc-common.h"
> +
> +struct vimc_cap_device {
> + struct vimc_ent_device ved;
> + struct video_device vdev;
> + struct device *dev;
> + struct v4l2_pix_format format;
> + struct vb2_queue queue;
> + struct list_head buf_list;
> + /*
> + * NOTE: in a real driver, a spin lock must be used to access the
> + * queue because the frames are generated from a hardware interruption
> + * and the isr is not allowed to sleep.
> + * Even if it is not necessary a spinlock in the vimc driver, we
> + * use it here as a code reference
> + */
> + spinlock_t qlock;
> + struct mutex lock;
> + u32 sequence;
> + struct vimc_stream stream;
> +};
> +
> +struct vimc_sca_device {
> + struct vimc_ent_device ved;
> + struct v4l2_subdev sd;
> + struct device *dev;
> + /* NOTE: the source fmt is the same as the sink
> + * with the width and hight multiplied by mult
> + */
> + struct v4l2_mbus_framefmt sink_fmt;
> + /* Values calculated when the stream starts */
> + u8 *src_frame;
> + unsigned int src_line_size;
> + unsigned int bpp;
> +};
> +
> +struct vimc_deb_device {
> + struct vimc_ent_device ved;
> + struct v4l2_subdev sd;
> + struct device *dev;
> + /* The active format */
> + struct v4l2_mbus_framefmt sink_fmt;
> + u32 src_code;
> + void (*set_rgb_src)(struct vimc_deb_device *vdeb, unsigned int lin,
> + unsigned int col, unsigned int rgb[3]);
> + /* Values calculated when the stream starts */
> + u8 *src_frame;
> + const struct vimc_deb_pix_map *sink_pix_map;
> + unsigned int sink_bpp;
> +};
> +
> +struct vimc_sen_device {
> + struct vimc_ent_device ved;
> + struct v4l2_subdev sd;
> + struct device *dev;
> + struct tpg_data tpg;
> + struct task_struct *kthread_sen;
> + u8 *frame;
> + /* The active format */
> + struct v4l2_mbus_framefmt mbus_format;
> + struct v4l2_ctrl_handler hdl;
> +};
> +
> +struct vimc_device {
> + /* The platform device */
> + struct platform_device pdev;
> +
> + /* The pipeline configuration */
> + const struct vimc_pipeline_config *pipe_cfg;
> +
> + /* The Associated media_device parent */
> + struct media_device mdev;
> +
> + /* Internal v4l2 parent device*/
> + struct v4l2_device v4l2_dev;
> +
> + /* Subdevices */
> + struct platform_device **subdevs;
> +};
> +
> +#endif
--
Regards,
Laurent Pinchart
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