On Wed, Feb 28, 2018 at 05:14:52PM +0100, Giulio Benetti wrote:
> Handle both positive and negative dclk polarity,
> according to bus_flags.
>
> Signed-off-by: Giulio Benetti <giulio.benetti@xxxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/sun4i/sun4i_tcon.c | 13 ++++++++++++-
> 1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> index aaf911a..534e5ee 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> @@ -17,6 +17,7 @@
> #include <drm/drm_encoder.h>
> #include <drm/drm_modes.h>
> #include <drm/drm_of.h>
> +#include <drm/drm_panel.h>
>
> #include <uapi/drm/drm_mode.h>
>
> @@ -340,6 +341,9 @@ static void sun4i_tcon0_mode_set_lvds(struct sun4i_tcon *tcon,
> static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
> const struct drm_display_mode *mode)
> {
> + struct drm_panel *panel = tcon->panel;
> + struct drm_connector *connector = panel->connector;
> + struct drm_display_info display_info = connector->display_info;
> unsigned int bp, hsync, vsync;
> u8 clk_delay;
> u32 val = 0;
> @@ -395,8 +399,15 @@ static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
> if (mode->flags & DRM_MODE_FLAG_PVSYNC)
> val |= SUN4I_TCON0_IO_POL_VSYNC_POSITIVE;
>
> + if (display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_POSEDGE)
> + clk_set_phase(tcon->dclk, 240);
> +
> + if (display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_NEGEDGE)
> + clk_set_phase(tcon->dclk, 0);
> +
This needs to have a whole bunch of comments here. We want to have
basically the whole discussion we had by mail previously about this in
there.
And the same goes for your commit log.
> regmap_update_bits(tcon->regs, SUN4I_TCON0_IO_POL_REG,
> - SUN4I_TCON0_IO_POL_HSYNC_POSITIVE | SUN4I_TCON0_IO_POL_VSYNC_POSITIVE,
> + SUN4I_TCON0_IO_POL_HSYNC_POSITIVE |
> + SUN4I_TCON0_IO_POL_VSYNC_POSITIVE,
> val);
This has nothing to do with your patch.
Maxime
--
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
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