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media: omap3isp: support 64-bit version of omap3isp_stat_data

Bladeren bron 
C libraries with 64-bit time_t use an incompatible format for
struct omap3isp_stat_data. This changes the kernel code to
support either version, by moving over the normal handling
to the 64-bit variant, and adding compatiblity code to handle
the old binary format with the existing ioctl command code.

Fortunately, the command code includes the size of the structure,
so the difference gets handled automatically. In the process of
eliminating the references to 'struct timeval' from the kernel,
I also change the way the timestamp is generated internally,
basically by open-coding the v4l2_get_timestamp() call.

[Sakari Ailus: Alphabetical order of headers, clean up compat code]

Cc: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Arnd Bergmann
2018-04-25 17:30:10 -04:00
gecommit door Mauro Carvalho Chehab
bovenliggende daa36370b6
commit 378e3f81cb
6 gewijzigde bestanden met toevoegingen van 52 en 3 verwijderingen
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23
drivers/media/platform/omap3isp/ispstat.c
Bestand weergeven

@@ -17,6 +17,7 @@
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/timekeeping.h>
#include <linux/uaccess.h>
#include "isp.h"
@@ -237,7 +238,7 @@ static int isp_stat_buf_queue(struct ispstat *stat)
if (!stat->active_buf)
return STAT_NO_BUF;
v4l2_get_timestamp(&stat->active_buf->ts);
ktime_get_ts64(&stat->active_buf->ts);
stat->active_buf->buf_size = stat->buf_size;
if (isp_stat_buf_check_magic(stat, stat->active_buf)) {
@@ -498,7 +499,8 @@ int omap3isp_stat_request_statistics(struct ispstat *stat,
return PTR_ERR(buf);
}
data->ts = buf->ts;
data->ts.tv_sec = buf->ts.tv_sec;
data->ts.tv_usec = buf->ts.tv_nsec / NSEC_PER_USEC;
data->config_counter = buf->config_counter;
data->frame_number = buf->frame_number;
data->buf_size = buf->buf_size;
@@ -510,6 +512,23 @@ int omap3isp_stat_request_statistics(struct ispstat *stat,
return 0;
}
int omap3isp_stat_request_statistics_time32(struct ispstat *stat,
struct omap3isp_stat_data_time32 *data)
{
struct omap3isp_stat_data data64;
int ret;
ret = omap3isp_stat_request_statistics(stat, &data64);
if (ret)
return ret;
data->ts.tv_sec = data64.ts.tv_sec;
data->ts.tv_usec = data64.ts.tv_usec;
memcpy(&data->buf, &data64.buf, sizeof(*data) - sizeof(data->ts));
return 0;
}
/*
* omap3isp_stat_config - Receives new statistic engine configuration.
* @new_conf: Pointer to config structure.