Hi Kate,
On 5/8/23 08:26, Kate Hsuan wrote:
> The actions of ISP2401 and 2400 are determined at the runtime.
>
> Signed-off-by: Kate Hsuan <hpa@xxxxxxxxxx>
> ---
> .../staging/media/atomisp/pci/sh_css_mipi.c | 65 ++++++-------------
> 1 file changed, 20 insertions(+), 45 deletions(-)
>
> diff --git a/drivers/staging/media/atomisp/pci/sh_css_mipi.c b/drivers/staging/media/atomisp/pci/sh_css_mipi.c
> index bc6e8598a776..52a1ed63e9a5 100644
> --- a/drivers/staging/media/atomisp/pci/sh_css_mipi.c
> +++ b/drivers/staging/media/atomisp/pci/sh_css_mipi.c
> @@ -386,30 +381,22 @@ allocate_mipi_frames(struct ia_css_pipe *pipe,
> return -EINVAL;
> }
>
> -#ifdef ISP2401
> - err = calculate_mipi_buff_size(&pipe->stream->config,
> - &my_css.mipi_frame_size[port]);
Before you changes this code always run ISP2401, now it only runs
when (ref_count_mipi_allocation[port] != 0) is not true.
So this statement should stay here in the code, just prefixed
with a if (IS_ISP2401) condition.
> - /*
> - * 2401 system allows multiple streams to use same physical port. This is not
> - * true for 2400 system. Currently 2401 uses MIPI buffers as a temporary solution.
> - * TODO AM: Once that is changed (removed) this code should be removed as well.
> - * In that case only 2400 related code should remain.
> - */
> - if (ref_count_mipi_allocation[port] != 0) {
> - ref_count_mipi_allocation[port]++;
> - ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE_PRIVATE,
> - "allocate_mipi_frames(%p) leave: nothing to do, already allocated for this port (port=%d).\n",
> - pipe, port);
> - return 0;
> - }
> -#else
> if (ref_count_mipi_allocation[port] != 0) {
> ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE_PRIVATE,
> "allocate_mipi_frames(%p) exit: already allocated for this port (port=%d).\n",
> pipe, port);
> return 0;
> + } else {
> + /*
> + * 2401 system allows multiple streams to use same physical port. This is not
> + * true for 2400 system. Currently 2401 uses MIPI buffers as a temporary solution.
> + * TODO AM: Once that is changed (removed) this code should be removed as well.
> + * In that case only 2400 related code should remain.
> + */
This comment block actually belongs to the if (ref_count_mipi_allocation[port] != 0)
check, the code executed if that check passes was actually different between
the ISP2400 and ISP2401 (my bad, sorry). The ISP2401 case did an extra:
ref_count_mipi_allocation[port]++;
when (ref_count_mipi_allocation[port] != 0), so we need to add:
if (IS_ISP2401)
ref_count_mipi_allocation[port]++;
above the return 0 above.
> + if (IS_ISP2401)
> + err = calculate_mipi_buff_size(&pipe->stream->config,
> + &my_css.mipi_frame_size[port]);
I have fixed this all up while merging your series and the new
diff for this code-block now looks like this:
@@ -386,9 +381,10 @@ allocate_mipi_frames(struct ia_css_pipe *pipe,
return -EINVAL;
}
-#ifdef ISP2401
- err = calculate_mipi_buff_size(&pipe->stream->config,
- &my_css.mipi_frame_size[port]);
+ if (IS_ISP2401)
+ err = calculate_mipi_buff_size(&pipe->stream->config,
+ &my_css.mipi_frame_size[port]);
+
/*
* 2401 system allows multiple streams to use same physical port. This is not
* true for 2400 system. Currently 2401 uses MIPI buffers as a temporary solution.
@@ -396,20 +392,14 @@ allocate_mipi_frames(struct ia_css_pipe *pipe,
* In that case only 2400 related code should remain.
*/
if (ref_count_mipi_allocation[port] != 0) {
- ref_count_mipi_allocation[port]++;
+ if (IS_ISP2401)
+ ref_count_mipi_allocation[port]++;
+
ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE_PRIVATE,
"allocate_mipi_frames(%p) leave: nothing to do, already allocated for this port (port=%d).\n",
pipe, port);
return 0;
}
-#else
- if (ref_count_mipi_allocation[port] != 0) {
- ia_css_debug_dtrace(IA_CSS_DEBUG_TRACE_PRIVATE,
- "allocate_mipi_frames(%p) exit: already allocated for this port (port=%d).\n",
- pipe, port);
- return 0;
- }
-#endif
ref_count_mipi_allocation[port]++;
Regards,
Hans
