On Mon, 2024-11-25 at 12:22 +0200, Laurent Pinchart wrote:
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>
> On Mon, Nov 25, 2024 at 09:56:54AM +0000, CK Hu (胡俊光) wrote:
> > On Mon, 2024-11-25 at 11:39 +0200, Laurent Pinchart wrote:
> > > On Mon, Nov 25, 2024 at 06:59:59AM +0000, CK Hu (胡俊光) wrote:
> > > > On Thu, 2024-11-21 at 09:53 +0100, Julien Stephan wrote:
> > > > >
> > > > > From: Phi-bang Nguyen <pnguyen@xxxxxxxxxxxx>
> > > > >
> > > > > This driver provides a path to bypass the SoC ISP so that image data
> > > > > coming from the SENINF can go directly into memory without any image
> > > > > processing. This allows the use of an external ISP.
> > > > >
> > > > > Signed-off-by: Phi-bang Nguyen <pnguyen@xxxxxxxxxxxx>
> > > > > Signed-off-by: Florian Sylvestre <fsylvestre@xxxxxxxxxxxx>
> > > > > [Paul Elder fix irq locking]
> > > > > Signed-off-by: Paul Elder <paul.elder@xxxxxxxxxxxxxxxx>
> > > > > Co-developed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> > > > > Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> > > > > Co-developed-by: Julien Stephan <jstephan@xxxxxxxxxxxx>
> > > > > Signed-off-by: Julien Stephan <jstephan@xxxxxxxxxxxx>
> > > > > ---
> > > >
> > > > [snip]
> > > >
> > > > > +static const struct mtk_cam_conf camsv30_conf = {
> > > > > + .tg_sen_mode = 0x00010002U, /* TIME_STP_EN = 1. DBL_DATA_BUS = 1 */
> > > > > + .module_en = 0x40000001U, /* enable double buffer and TG */
> > > > > + .imgo_con = 0x80000080U, /* DMA FIFO depth and burst */
> > > > > + .imgo_con2 = 0x00020002U, /* DMA priority */
> > > >
> > > > Now support only one SoC, so it's not necessary make these SoC variable.
> > > > They could be constant symbol now.
> > >
> > > This I would keep as a mtk_cam_conf structure instance, as I think it
> > > makes it clear what we consider to be model-specific without hindering
> > > readability. I don't have a very strong opinion though.
> >
> > If this is a configuration table, I would like it to be
> >
> > {
> > .time_stp_en = true;
> > .dbl_data_bus = 1;
> > .double_buffer_en = true;
> > .tg = 0x4;
> > ...
> > }
>
> I like that too, it's more readable than raw register values.
>
> > If next SoC has only one parameter is different, we duplicate all
> > other parameter?
>
> That's what we usually do when the amount of parameters is not too
> large. When it becomes larger, we sometimes split the configuration data
> in multiple chunks. For instance,
>
> static const char * const family_a_clks[] = {
> "core",
> "io",
> };
>
> static sont char * const family_b_clks[] = {
> "main",
> "ram",
> "bus",
> };
>
> static const foo_dev_info soc_1_info = {
> .has_time_machine = false,
> .clks = family_a_clks,
> .num_clks = ARRAY_SIZE(family_a_clks),
> };
>
> static const foo_dev_info soc_2_info = {
> .has_time_machine = false,
> .clks = family_b_clks,
> .num_clks = ARRAY_SIZE(family_b_clks),
> };
>
> static const foo_dev_info soc_3_info = {
> .has_time_machine = true,
> .clks = family_b_clks,
> .num_clks = ARRAY_SIZE(family_b_clks),
> };
>
> There's no clear rule, it's on a case-by-case basis.
OK. That's fine for me.
Regards,
CK
>
> > > > > +};
> > > > > +
>
> --
> Regards,
>
> Laurent Pinchart
