On Thu, Apr 18, 2024 at 2:42 PM cong yang
<yangco...@huaqin.corp-partner.google.com> wrote:
> I learned from himax that even if the same controller is used with
> different glasses, the corresponding parameters are not fixed.
>
> For example: _INIT_DCS_CMD(0xB9, 0x83, 0x10, 0x21, 0x55, 0x00),
>
> even in the group initial code, the same register will be loaded with
> parameters twice.
(...)
> So assuming that the registers of the two screens is the same now,
> it cannot be set as a common parameter.
> Otherwise, it may be a bit troublesome for the maintainers.
>
> If necessary, I can break out starry_himax83102_j02, boe_nv110wum and
> ivo_t109nw41
> as separate driver. Then add some define to these registers.
Why would you do a separate driver per panel despite they have
the same display controller? I don't get it.
Use one driver, use different compatible strings for the different
panels and use the corresponding sequence for each panel
selected by compatible string.
For example, see drivers/gpu/drm/panel/panel-novatek-nt35510.c:
static const struct of_device_id nt35510_of_match[] = {
{
.compatible = "frida,frd400b25025",
.data = &nt35510_frida_frd400b25025,
},
{
.compatible = "hydis,hva40wv1",
.data = &nt35510_hydis_hva40wv1,
},
{ }
};
Take some inspiration from this driver and how we parameterize
the different data depending on compatible string.
Yours,
Linus Walleij
