From: Maxime Ripard Date: Tue, 17 Oct 2017 09:06:14 +0000 (+0200) Subject: drm/sun4i: tcon: Move out the tcon0 common setup X-Git-Tag: v4.15-rc1~90^2~24^2~17 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=ba19c53704d8bc503dd20011819d1d3251899c56;p=linux.git 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 Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/183100/ --- 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: