On Wed, May 3, 2017 at 7:59 PM, Maxime Ripard
<maxime.ripard@xxxxxxxxxxxxxxxxxx> wrote:
> The muxing can actually happen on both channels on some SoCs, so it makes
> more sense to just move it out of the sun4i_tcon1_mode_set function and
> create a separate function that needs to be called by the encoders.
>
> Let's do that and convert the existing drivers.
>
> Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/sun4i/sun4i_rgb.c | 1 +
> drivers/gpu/drm/sun4i/sun4i_tcon.c | 22 ++++++++++++++++------
> drivers/gpu/drm/sun4i/sun4i_tcon.h | 2 ++
> drivers/gpu/drm/sun4i/sun4i_tv.c | 1 +
> 4 files changed, 20 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.c b/drivers/gpu/drm/sun4i/sun4i_rgb.c
> index 67f0b91a99de..3003d290c635 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_rgb.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_rgb.c
> @@ -175,6 +175,7 @@ static void sun4i_rgb_encoder_mode_set(struct drm_encoder *encoder,
> struct sun4i_tcon *tcon = rgb->tcon;
>
> sun4i_tcon0_mode_set(tcon, mode);
> + sun4i_tcon_set_mux(tcon, 0, encoder);
>
> clk_set_rate(tcon->dclk, mode->crtc_clock * 1000);
>
> diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> index 66a5bb9b85e9..0204d9fadb66 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
> @@ -108,6 +108,22 @@ void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable)
> }
> EXPORT_SYMBOL(sun4i_tcon_enable_vblank);
>
> +void sun4i_tcon_set_mux(struct sun4i_tcon *tcon, int channel,
> + struct drm_encoder *encoder)
The channel doesn't really matter. What is needed is which TCON and encoder
are supposed to be muxed together. This is going to be per SoC type anyway.
I have something in the works, though it's not finished yet.
I think this works for now.
Acked-by: Chen-Yu Tsai <wens@xxxxxxxx>
> +{
> + if (!tcon->quirks->has_unknown_mux)
> + return;
> +
> + if (channel != 1)
> + return;
> +
> + /*
> + * FIXME: Undocumented bits
> + */
> + regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, 1);
> +}
> +EXPORT_SYMBOL(sun4i_tcon_set_mux);
> +
> static int sun4i_tcon_get_clk_delay(struct drm_display_mode *mode,
> int channel)
> {
> @@ -266,12 +282,6 @@ void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon,
> regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
> SUN4I_TCON_GCTL_IOMAP_MASK,
> SUN4I_TCON_GCTL_IOMAP_TCON1);
> -
> - /*
> - * FIXME: Undocumented bits
> - */
> - if (tcon->quirks->has_unknown_mux)
> - regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, 1);
> }
> EXPORT_SYMBOL(sun4i_tcon1_mode_set);
>
> diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.h b/drivers/gpu/drm/sun4i/sun4i_tcon.h
> index f636343a935d..0350936b413c 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_tcon.h
> +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.h
> @@ -190,6 +190,8 @@ void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable);
> /* Mode Related Controls */
> void sun4i_tcon_switch_interlace(struct sun4i_tcon *tcon,
> bool enable);
> +void sun4i_tcon_set_mux(struct sun4i_tcon *tcon, int channel,
> + struct drm_encoder *encoder);
> void sun4i_tcon0_mode_set(struct sun4i_tcon *tcon,
> struct drm_display_mode *mode);
> void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon,
> diff --git a/drivers/gpu/drm/sun4i/sun4i_tv.c b/drivers/gpu/drm/sun4i/sun4i_tv.c
> index 49c49431a053..03c494b8159c 100644
> --- a/drivers/gpu/drm/sun4i/sun4i_tv.c
> +++ b/drivers/gpu/drm/sun4i/sun4i_tv.c
> @@ -393,6 +393,7 @@ static void sun4i_tv_mode_set(struct drm_encoder *encoder,
> const struct tv_mode *tv_mode = sun4i_tv_find_tv_by_mode(mode);
>
> sun4i_tcon1_mode_set(tcon, mode);
> + sun4i_tcon_set_mux(tcon, 1, encoder);
>
> /* Enable and map the DAC to the output */
> regmap_update_bits(tv->regs, SUN4I_TVE_EN_REG,
> --
> git-series 0.8.11
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