On Fri, 23 Nov 2012, Albert Wang wrote:
> This patch splits mcam core into 2 parts to prepare for soc_camera support.
>
> The first part remains in mcam-core. This part includes the HW operations
> and vb2 callback functions.
>
> The second part is moved to mcam-core-standard.c. This part is relevant with
> the implementation of using v4l2.
>
> Signed-off-by: Libin Yang <lby...@marvell.com>
> Signed-off-by: Albert Wang <twan...@marvell.com>
> ---
> drivers/media/platform/marvell-ccic/Makefile | 4 +-
> .../platform/marvell-ccic/mcam-core-standard.c | 767 +++++++++++++++++
> .../platform/marvell-ccic/mcam-core-standard.h | 28 +
> drivers/media/platform/marvell-ccic/mcam-core.c | 873
> +-------------------
> drivers/media/platform/marvell-ccic/mcam-core.h | 45 +
> 5 files changed, 883 insertions(+), 834 deletions(-)
> create mode 100644 drivers/media/platform/marvell-ccic/mcam-core-standard.c
> create mode 100644 drivers/media/platform/marvell-ccic/mcam-core-standard.h
Nice :-) I hope, you'll excuse me, that I won't be verifying this patch
thoroughly, instead, I'll trust you to move the code around without actually
changing anything in it. Actually, you did change a couple of things - like
replaced printk() with cam_err(), and actually here:
> + cam_err(cam, "marvell-cam: Cafe can't do S/G I/O," \
> + "attempting vmalloc mode instead\n");
and here
> + cam_warn(cam, "Unable to alloc DMA buffers at load" \
> + "will try again later\n");
the backslashes are not needed... Also in these declarations:
> -static inline int mcam_alloc_dma_bufs(struct mcam_camera *cam, int loadtime)
> +inline int mcam_alloc_dma_bufs(struct mcam_camera *cam, int loadtime)
> {
> return 0;
> }
>
> -static inline void mcam_free_dma_bufs(struct mcam_camera *cam)
> +inline void mcam_free_dma_bufs(struct mcam_camera *cam)
> {
> return;
> }
>
> -static inline int mcam_check_dma_buffers(struct mcam_camera *cam)
> +inline int mcam_check_dma_buffers(struct mcam_camera *cam)
> {
> return 0;
> }
please also remove "inline." Yet another hunk:
> -static void mcam_ctlr_stop(struct mcam_camera *cam)
> +void mcam_ctlr_stop(struct mcam_camera *cam)
doesn't seem to be needed. In the header:
> diff --git a/drivers/media/platform/marvell-ccic/mcam-core-standard.h
> b/drivers/media/platform/marvell-ccic/mcam-core-standard.h
> new file mode 100644
> index 0000000..148a1a1
> --- /dev/null
> +++ b/drivers/media/platform/marvell-ccic/mcam-core-standard.h
> @@ -0,0 +1,28 @@
> +/*
> + * Marvell camera core structures.
> + *
> + * Copyright 2011 Jonathan Corbet cor...@lwn.net
> + */
> +extern bool alloc_bufs_at_read;
> +extern int n_dma_bufs;
> +extern int buffer_mode;
> +extern const struct vb2_ops mcam_vb2_sg_ops;
> +extern const struct vb2_ops mcam_vb2_ops;
Do all these variables really have to be exported? If yes - please prefix
them all with "mcam_..." to avoid polluting the kernel name-space. You
don't want to make a symbol named like "n_dma_bufs" or "buffer_mode" be
visible to the entire kernel;-) In function declarations:
> +extern void mcam_ctlr_stop_dma(struct mcam_camera *cam);
> +extern int mcam_config_mipi(struct mcam_camera *mcam, int enable);
> +extern void mcam_ctlr_power_up(struct mcam_camera *cam);
> +extern void mcam_ctlr_power_down(struct mcam_camera *cam);
> +extern void mcam_ctlr_init(struct mcam_camera *cam);
> +extern int mcam_cam_init(struct mcam_camera *cam);
> +extern void mcam_free_dma_bufs(struct mcam_camera *cam);
> +extern void mcam_ctlr_dma_sg(struct mcam_camera *cam);
> +extern void mcam_dma_sg_done(struct mcam_camera *cam, int frame);
> +extern int mcam_check_dma_buffers(struct mcam_camera *cam);
> +extern void mcam_set_config_needed(struct mcam_camera *cam, int needed);
> +extern int __mcam_cam_reset(struct mcam_camera *cam);
> +extern int mcam_alloc_dma_bufs(struct mcam_camera *cam, int loadtime);
> +extern void mcam_ctlr_dma_contig(struct mcam_camera *cam);
> +extern void mcam_dma_contig_done(struct mcam_camera *cam, int frame);
> +extern void mcam_ctlr_dma_vmalloc(struct mcam_camera *cam);
> +extern void mcam_vmalloc_done(struct mcam_camera *cam, int frame);
the keyword "extern" isn't needed.
Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/
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