コード例 #1
0
void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon,
			  struct drm_display_mode *mode)
{
	unsigned int bp, hsync, vsync;
	u8 clk_delay;
	u32 val;

	WARN_ON(!tcon->quirks->has_channel_1);

	/* Adjust clock delay */
	clk_delay = sun4i_tcon_get_clk_delay(mode, 1);
	regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
			   SUN4I_TCON1_CTL_CLK_DELAY_MASK,
			   SUN4I_TCON1_CTL_CLK_DELAY(clk_delay));

	/* Set interlaced mode */
	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
		val = SUN4I_TCON1_CTL_INTERLACE_ENABLE;
	else
		val = 0;
	regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
			   SUN4I_TCON1_CTL_INTERLACE_ENABLE,
			   val);

	/* Set the input resolution */
	regmap_write(tcon->regs, SUN4I_TCON1_BASIC0_REG,
		     SUN4I_TCON1_BASIC0_X(mode->crtc_hdisplay) |
		     SUN4I_TCON1_BASIC0_Y(mode->crtc_vdisplay));

	/* Set the upscaling resolution */
	regmap_write(tcon->regs, SUN4I_TCON1_BASIC1_REG,
		     SUN4I_TCON1_BASIC1_X(mode->crtc_hdisplay) |
		     SUN4I_TCON1_BASIC1_Y(mode->crtc_vdisplay));

	/* Set the output resolution */
	regmap_write(tcon->regs, SUN4I_TCON1_BASIC2_REG,
		     SUN4I_TCON1_BASIC2_X(mode->crtc_hdisplay) |
		     SUN4I_TCON1_BASIC2_Y(mode->crtc_vdisplay));

	/* Set horizontal display timings */
	bp = mode->crtc_htotal - mode->crtc_hsync_end;
	DRM_DEBUG_DRIVER("Setting horizontal total %d, backporch %d\n",
			 mode->htotal, bp);
	regmap_write(tcon->regs, SUN4I_TCON1_BASIC3_REG,
		     SUN4I_TCON1_BASIC3_H_TOTAL(mode->crtc_htotal) |
		     SUN4I_TCON1_BASIC3_H_BACKPORCH(bp));

	/* Set vertical display timings */
	bp = mode->crtc_vtotal - mode->crtc_vsync_end;
	DRM_DEBUG_DRIVER("Setting vertical total %d, backporch %d\n",
			 mode->vtotal, bp);
	regmap_write(tcon->regs, SUN4I_TCON1_BASIC4_REG,
		     SUN4I_TCON1_BASIC4_V_TOTAL(mode->vtotal) |
		     SUN4I_TCON1_BASIC4_V_BACKPORCH(bp));

	/* Set Hsync and Vsync length */
	hsync = mode->crtc_hsync_end - mode->crtc_hsync_start;
	vsync = mode->crtc_vsync_end - mode->crtc_vsync_start;
	DRM_DEBUG_DRIVER("Setting HSYNC %d, VSYNC %d\n", hsync, vsync);
	regmap_write(tcon->regs, SUN4I_TCON1_BASIC5_REG,
		     SUN4I_TCON1_BASIC5_V_SYNC(vsync) |
		     SUN4I_TCON1_BASIC5_H_SYNC(hsync));

	/* Map output pins to channel 1 */
	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);
}
コード例 #2
0
ファイル: sun4i_tcon.c プロジェクト: SantoshShilimkar/linux
static void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon,
				 const struct drm_display_mode *mode)
{
	unsigned int bp, hsync, vsync, vtotal;
	u8 clk_delay;
	u32 val;

	WARN_ON(!tcon->quirks->has_channel_1);

	/* Configure the dot clock */
	clk_set_rate(tcon->sclk1, mode->crtc_clock * 1000);

	/* Adjust clock delay */
	clk_delay = sun4i_tcon_get_clk_delay(mode, 1);
	regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
			   SUN4I_TCON1_CTL_CLK_DELAY_MASK,
			   SUN4I_TCON1_CTL_CLK_DELAY(clk_delay));

	/* Set interlaced mode */
	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
		val = SUN4I_TCON1_CTL_INTERLACE_ENABLE;
	else
		val = 0;
	regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
			   SUN4I_TCON1_CTL_INTERLACE_ENABLE,
			   val);

	/* Set the input resolution */
	regmap_write(tcon->regs, SUN4I_TCON1_BASIC0_REG,
		     SUN4I_TCON1_BASIC0_X(mode->crtc_hdisplay) |
		     SUN4I_TCON1_BASIC0_Y(mode->crtc_vdisplay));

	/* Set the upscaling resolution */
	regmap_write(tcon->regs, SUN4I_TCON1_BASIC1_REG,
		     SUN4I_TCON1_BASIC1_X(mode->crtc_hdisplay) |
		     SUN4I_TCON1_BASIC1_Y(mode->crtc_vdisplay));

	/* Set the output resolution */
	regmap_write(tcon->regs, SUN4I_TCON1_BASIC2_REG,
		     SUN4I_TCON1_BASIC2_X(mode->crtc_hdisplay) |
		     SUN4I_TCON1_BASIC2_Y(mode->crtc_vdisplay));

	/* Set horizontal display timings */
	bp = mode->crtc_htotal - mode->crtc_hsync_start;
	DRM_DEBUG_DRIVER("Setting horizontal total %d, backporch %d\n",
			 mode->htotal, bp);
	regmap_write(tcon->regs, SUN4I_TCON1_BASIC3_REG,
		     SUN4I_TCON1_BASIC3_H_TOTAL(mode->crtc_htotal) |
		     SUN4I_TCON1_BASIC3_H_BACKPORCH(bp));

	bp = mode->crtc_vtotal - mode->crtc_vsync_start;
	DRM_DEBUG_DRIVER("Setting vertical total %d, backporch %d\n",
			 mode->crtc_vtotal, bp);

	/*
	 * The vertical resolution needs to be doubled in all
	 * cases. We could use crtc_vtotal and always multiply by two,
	 * but that leads to a rounding error in interlace when vtotal
	 * is odd.
	 *
	 * This happens with TV's PAL for example, where vtotal will
	 * be 625, crtc_vtotal 312, and thus crtc_vtotal * 2 will be
	 * 624, which apparently confuses the hardware.
	 *
	 * To work around this, we will always use vtotal, and
	 * multiply by two only if we're not in interlace.
	 */
	vtotal = mode->vtotal;
	if (!(mode->flags & DRM_MODE_FLAG_INTERLACE))
		vtotal = vtotal * 2;

	/* Set vertical display timings */
	regmap_write(tcon->regs, SUN4I_TCON1_BASIC4_REG,
		     SUN4I_TCON1_BASIC4_V_TOTAL(vtotal) |
		     SUN4I_TCON1_BASIC4_V_BACKPORCH(bp));

	/* Set Hsync and Vsync length */
	hsync = mode->crtc_hsync_end - mode->crtc_hsync_start;
	vsync = mode->crtc_vsync_end - mode->crtc_vsync_start;
	DRM_DEBUG_DRIVER("Setting HSYNC %d, VSYNC %d\n", hsync, vsync);
	regmap_write(tcon->regs, SUN4I_TCON1_BASIC5_REG,
		     SUN4I_TCON1_BASIC5_V_SYNC(vsync) |
		     SUN4I_TCON1_BASIC5_H_SYNC(hsync));

	/* Map output pins to channel 1 */
	regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
			   SUN4I_TCON_GCTL_IOMAP_MASK,
			   SUN4I_TCON_GCTL_IOMAP_TCON1);
}