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Re: [PATCH 10/18] drm/sun4i: tcon: Move out the tcon0 common setup

From Chen-Yu Tsai <wens@csie.org>
Newsgroups linux.kernel
Subject Re: [PATCH 10/18] drm/sun4i: tcon: Move out the tcon0 common setup
Date 2017-07-18 05:50 +0200
Message-ID <u4rGi-5CQ-1@gated-at.bofh.it> (permalink)
References <u2N8d-6Ff-3@gated-at.bofh.it> <u2N8f-6Ff-21@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Thu, Jul 13, 2017 at 10:13 PM, Maxime Ripard
<maxime.ripard@free-electrons.com> wrote:
> Some channel0 setup has to be done, no matter what the output interface is
> (RGB, CPU, LVDS). Move that code into a common function in order to avoid
> duplication.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
> ---
>  drivers/gpu/drm/sun4i/sun4i_tcon.c | 26 ++++++++++++++++----------
>  1 file changed, 16 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> index a3bbf9994cfa..f051862d635e 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> @@ -125,15 +125,26 @@ static int sun4i_tcon_get_clk_delay(struct drm_display_mode *mode,
>         return delay;
>  }
>
> -static void sun4i_tcon0_mode_set(struct sun4i_tcon *tcon,
> -                                struct drm_display_mode *mode)
> +static void sun4i_tcon0_mode_set_common(struct sun4i_tcon *tcon,
> +                                       struct drm_display_mode *mode)
> +{
> +       /* Configure the dot clock */
> +       clk_set_rate_protect(tcon->dclk, mode->crtc_clock * 1000);

I'd prefer not changing APIs in a code move. It also means we could
apply this sooner than later. Otherwise,

Reviewed-by: Chen-Yu Tsai <wens@csie.org>

> +
> +       /* Set the resolution */
> +       regmap_write(tcon->regs, SUN4I_TCON0_BASIC0_REG,
> +                    SUN4I_TCON0_BASIC0_X(mode->crtc_hdisplay) |
> +                    SUN4I_TCON0_BASIC0_Y(mode->crtc_vdisplay));
> +}
> +
> +static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
> +                                    struct drm_display_mode *mode)
>  {
>         unsigned int bp, hsync, vsync;
>         u8 clk_delay;
>         u32 val = 0;
>
> -       /* Configure the dot clock */
> -       clk_set_rate(tcon->dclk, mode->crtc_clock * 1000);
> +       sun4i_tcon0_mode_set_common(tcon, mode);
>
>         /* Adjust clock delay */
>         clk_delay = sun4i_tcon_get_clk_delay(mode, 0);
> @@ -141,11 +152,6 @@ static void sun4i_tcon0_mode_set(struct sun4i_tcon *tcon,
>                            SUN4I_TCON0_CTL_CLK_DELAY_MASK,
>                            SUN4I_TCON0_CTL_CLK_DELAY(clk_delay));
>
> -       /* Set the resolution */
> -       regmap_write(tcon->regs, SUN4I_TCON0_BASIC0_REG,
> -                    SUN4I_TCON0_BASIC0_X(mode->crtc_hdisplay) |
> -                    SUN4I_TCON0_BASIC0_Y(mode->crtc_vdisplay));
> -
>         /*
>          * This is called a backporch in the register documentation,
>          * but it really is the back porch + hsync
> @@ -295,7 +301,7 @@ void sun4i_tcon_mode_set(struct sun4i_tcon *tcon, struct drm_encoder *encoder,
>  {
>         switch (encoder->encoder_type) {
>         case DRM_MODE_ENCODER_NONE:
> -               sun4i_tcon0_mode_set(tcon, mode);
> +               sun4i_tcon0_mode_set_rgb(tcon, mode);
>                 break;
>         case DRM_MODE_ENCODER_TVDAC:
>                 /*
> --
> git-series 0.9.1

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Thread

[PATCH 00/18] drm/sun4i: Allwinner MIPI-DSI support Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
  [PATCH 06/18] drm/sun4i: tcon: Don't rely on encoders to enable the TCON Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 06/18] drm/sun4i: tcon: Don't rely on encoders to enable  the TCON Chen-Yu Tsai <wens@csie.org> - 2017-07-14 05:50 +0200
      Re: [PATCH 06/18] drm/sun4i: tcon: Don't rely on encoders to enable  the TCON Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-20 15:30 +0200
  [PATCH 04/18] drm/sun4i: Remove useless atomic_check Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 04/18] drm/sun4i: Remove useless atomic_check Chen-Yu Tsai <wens@csie.org> - 2017-07-14 05:20 +0200
      Re: [PATCH 04/18] drm/sun4i: Remove useless atomic_check Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-17 10:50 +0200
  [PATCH 15/18] drm/panel: Add Huarui LHR050H41 panel driver Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 15/18] drm/panel: Add Huarui LHR050H41 panel driver Andrzej Hajda <a.hajda@samsung.com> - 2017-07-14 11:30 +0200
  [PATCH 08/18] drm/sun4i: tcon: Add TRI finish interrupt for vblank Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 08/18] drm/sun4i: tcon: Add TRI finish interrupt for vblank Chen-Yu Tsai <wens@csie.org> - 2017-07-14 06:00 +0200
  [PATCH 07/18] drm/sun4i: tcon: Don't rely on encoders to set the TCON mode Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 07/18] drm/sun4i: tcon: Don't rely on encoders to set the  TCON mode Chen-Yu Tsai <wens@csie.org> - 2017-07-14 06:00 +0200
      Re: [PATCH 07/18] drm/sun4i: tcon: Don't rely on encoders to set the  TCON mode Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-20 15:40 +0200
  [PATCH 10/18] drm/sun4i: tcon: Move out the tcon0 common setup Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 10/18] drm/sun4i: tcon: Move out the tcon0 common setup kbuild test robot <lkp@intel.com> - 2017-07-14 12:00 +0200
    Re: [PATCH 10/18] drm/sun4i: tcon: Move out the tcon0 common setup Chen-Yu Tsai <wens@csie.org> - 2017-07-18 05:50 +0200
      Re: [PATCH 10/18] drm/sun4i: tcon: Move out the tcon0 common setup Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-20 16:00 +0200
  [PATCH 16/18] arm: dts: sun8i: a33: Add the DSI-related nodes Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
  [PATCH 09/18] drm/sun4i: tcon: Adjust dotclock dividers range Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 09/18] drm/sun4i: tcon: Adjust dotclock dividers range Chen-Yu Tsai <wens@csie.org> - 2017-07-14 06:20 +0200
      Re: [PATCH 09/18] drm/sun4i: tcon: Adjust dotclock dividers range Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-20 17:00 +0200
        Re: [PATCH 09/18] drm/sun4i: tcon: Adjust dotclock dividers range Chen-Yu Tsai <wens@csie.org> - 2017-07-20 17:20 +0200
  [PATCH 17/18] arm: dts: sun8i: Add BananaPI M2-Magic DTS Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 17/18] arm: dts: sun8i: Add BananaPI M2-Magic DTS Chen-Yu Tsai <wens@csie.org> - 2017-07-14 06:50 +0200
      Re: [PATCH 17/18] arm: dts: sun8i: Add BananaPI M2-Magic DTS Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-17 11:10 +0200
  [PATCH 13/18] dt-bindings: vendor: Add Huarui Lighting Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 13/18] dt-bindings: vendor: Add Huarui Lighting Chen-Yu Tsai <wens@csie.org> - 2017-07-14 10:00 +0200
      Re: [PATCH 13/18] dt-bindings: vendor: Add Huarui Lighting Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-20 15:40 +0200
  [PATCH 01/18] regmap: mmio: Add function to attach a clock Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 01/18] regmap: mmio: Add function to attach a clock Mark Brown <broonie@kernel.org> - 2017-07-13 18:10 +0200
      Re: [PATCH 01/18] regmap: mmio: Add function to attach a clock Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-17 11:10 +0200
        Re: [PATCH 01/18] regmap: mmio: Add function to attach a clock Mark Brown <broonie@kernel.org> - 2017-07-18 15:30 +0200
          Re: [PATCH 01/18] regmap: mmio: Add function to attach a clock Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-20 16:50 +0200
  [PATCH 02/18] drm/sun4i: Add if statement instead of depends on Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 02/18] drm/sun4i: Add if statement instead of depends on Chen-Yu Tsai <wens@csie.org> - 2017-07-14 05:10 +0200
      Re: [PATCH 02/18] drm/sun4i: Add if statement instead of depends on Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-17 10:50 +0200
  [PATCH 18/18] [DO NOT MERGE] arm: dts: sun8i: bpi-m2m: Add DSI display Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
  [PATCH 03/18] drm/sun4i: Realign Makefile padding and reorder it Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-13 16:20 +0200
    Re: [PATCH 03/18] drm/sun4i: Realign Makefile padding and reorder it Chen-Yu Tsai <wens@csie.org> - 2017-07-14 05:20 +0200
      Re: [PATCH 03/18] drm/sun4i: Realign Makefile padding and reorder it Maxime Ripard <maxime.ripard@free-electrons.com> - 2017-07-20 15:10 +0200

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