[PATCH 01/10] drm/sun4i: sun6i_mipi_dsi: Compute burst mode loop N1 instruction delay

Jagan Teki
2018-11-04T16:45:12Z

On Sat, Nov 3, 2018 at 8:53 PM Sergey Suloev <ssuloev@orpaltech.com> wrote:
>
> Hi, Jagan,
>
> On 11/3/18 1:08 PM, Jagan Teki wrote:
> > Loop N1 instruction delay for burst mode lcd panel are
> > computed as per BSP code.
> >
> > Reference code is available in BSP
> > (in drivers/video/sunxi/disp2/disp/de/lowlevel_sun50iw1/de_dsi.c)
> > dsi_dev[sel]->dsi_inst_loop_num.bits.loop_n1=
> > (panel->lcd_ht-panel->lcd_x)*(150)/(panel->lcd_dclk_freq*8) - 50;
> > => (((mode->htotal - mode->hdisplay) * 150) / ((mode->clock / 1000) * 8)) - 50;
> >
> > So use the similar computation for loop N1 delay.
> >
> > Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
> > ---
> > drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 9 ++++++++-
> > 1 file changed, 8 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
> > index 86430efd9054..da152c21ec62 100644
> > --- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
> > +++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c
> > @@ -394,7 +394,14 @@ static void sun6i_dsi_setup_burst(struct sun6i_dsi *dsi,
> > static void sun6i_dsi_setup_inst_loop(struct sun6i_dsi *dsi,
> > struct drm_display_mode *mode)
> > {
> > - u16 delay = 50 - 1;
> > + struct mipi_dsi_device *device = dsi->device;
> > + u16 delay;
> > +
> > + if (device->mode_flags == MIPI_DSI_MODE_VIDEO_BURST)
> > + delay = (((mode->htotal - mode->hdisplay) * 150) /
> > + ((mode->clock / 1000) * 8)) - 50;
> > + else
> > + delay = 50 - 1;
> >
> > regmap_write(dsi->regs, SUN6I_DSI_INST_LOOP_NUM_REG(0),
> > SUN6I_DSI_INST_LOOP_NUM_N0(50 - 1) |
>
>
> is this patch series comes in addition to the previous MIPI DSI series
> or in its stead?

Yes, all changes were added on top of previous MIPI DSI series(ie what
I mentioned in cover-letter) since it require clock patches from
previous version.