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drm/sun4i: tcon: Move out the tcon0 common setup 

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.

Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/183100/
This commit is contained in:
Maxime Ripard 2017-10-17 11:06:14 +02:00
parent 5b8f09100d
commit ba19c53704
1 changed files with 16 additions and 10 deletions
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26
drivers/gpu/drm/sun4i/sun4i_tcon.c
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@ -158,15 +158,26 @@ static int sun4i_tcon_get_clk_delay(const struct drm_display_mode *mode,
return delay;
}
static void sun4i_tcon0_mode_set(struct sun4i_tcon *tcon,
const struct drm_display_mode *mode)
static void sun4i_tcon0_mode_set_common(struct sun4i_tcon *tcon,
const struct drm_display_mode *mode)
{
/* Configure the dot clock */
clk_set_rate(tcon->dclk, mode->crtc_clock * 1000);
/* 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,
const 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);
@ -174,11 +185,6 @@ 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
@ -329,7 +335,7 @@ void sun4i_tcon_mode_set(struct sun4i_tcon *tcon,
{
switch (encoder->encoder_type) {
case DRM_MODE_ENCODER_NONE:
sun4i_tcon0_mode_set(tcon, mode);
sun4i_tcon0_mode_set_rgb(tcon, mode);
sun4i_tcon_set_mux(tcon, 0, encoder);
break;
case DRM_MODE_ENCODER_TVDAC: