diff options
| author | Maxime Ripard <maxime.ripard@free-electrons.com> | 2017-10-17 12:06:14 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2017-10-17 20:49:14 +0300 |
| commit | ba19c53704d8bc503dd20011819d1d3251899c56 (patch) | |
| tree | a53195fea93ab97e3b0e8bad0a35fd84200e1fd9 /drivers/gpu/drm/sun4i | |
| parent | 5b8f09100d6c85c4a8049a830b57f199b5b08278 (diff) | |
| download | linux-ba19c53704d8bc503dd20011819d1d3251899c56.tar.xz | |
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/
Diffstat (limited to 'drivers/gpu/drm/sun4i')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_tcon.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c index 7afd3b9de7e3..f69bcdf11cb8 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c @@ -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: |