sunxi: display: Add support for interlaced modes
Add support for interlaced modes, this is a preparation patch for adding
composite out support.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
index 74a4280..f3cc06e 100644
--- a/drivers/video/sunxi_display.c
+++ b/drivers/video/sunxi_display.c
@@ -445,6 +445,10 @@
writel(SUNXI_DE_BE_LAYER_ATTR1_FMT_XRGB8888, &de_be->layer0_attr1_ctrl);
setbits_le32(&de_be->mode, SUNXI_DE_BE_MODE_LAYER0_ENABLE);
+ if (mode->vmode == FB_VMODE_INTERLACED)
+ setbits_le32(&de_be->mode,
+ SUNXI_DE_BE_MODE_DEFLICKER_ENABLE |
+ SUNXI_DE_BE_MODE_INTERLACE_ENABLE);
}
static void sunxi_composer_enable(void)
@@ -668,6 +672,8 @@
int delay;
delay = mode->lower_margin + mode->vsync_len + mode->upper_margin;
+ if (mode->vmode == FB_VMODE_INTERLACED)
+ delay /= 2;
if (tcon == 1)
delay -= 2;
@@ -767,7 +773,7 @@
{
struct sunxi_lcdc_reg * const lcdc =
(struct sunxi_lcdc_reg *)SUNXI_LCD0_BASE;
- int bp, clk_delay, total, val;
+ int bp, clk_delay, total, val, yres;
/* Use tcon1 */
clrsetbits_le32(&lcdc->ctrl, SUNXI_LCDC_CTRL_IO_MAP_MASK,
@@ -775,13 +781,18 @@
clk_delay = sunxi_lcdc_get_clk_delay(mode, 1);
writel(SUNXI_LCDC_TCON1_CTRL_ENABLE |
+ ((mode->vmode == FB_VMODE_INTERLACED) ?
+ SUNXI_LCDC_TCON1_CTRL_INTERLACE_ENABLE : 0) |
SUNXI_LCDC_TCON1_CTRL_CLK_DELAY(clk_delay), &lcdc->tcon1_ctrl);
- writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(mode->yres),
+ yres = mode->yres;
+ if (mode->vmode == FB_VMODE_INTERLACED)
+ yres /= 2;
+ writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(yres),
&lcdc->tcon1_timing_source);
- writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(mode->yres),
+ writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(yres),
&lcdc->tcon1_timing_scale);
- writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(mode->yres),
+ writel(SUNXI_LCDC_X(mode->xres) | SUNXI_LCDC_Y(yres),
&lcdc->tcon1_timing_out);
bp = mode->hsync_len + mode->left_margin;
@@ -791,7 +802,9 @@
bp = mode->vsync_len + mode->upper_margin;
total = mode->yres + mode->lower_margin + bp;
- writel(SUNXI_LCDC_TCON1_TIMING_V_TOTAL(2 * total) |
+ if (mode->vmode == FB_VMODE_NONINTERLACED)
+ total *= 2;
+ writel(SUNXI_LCDC_TCON1_TIMING_V_TOTAL(total) |
SUNXI_LCDC_TCON1_TIMING_V_BP(bp), &lcdc->tcon1_timing_v);
writel(SUNXI_LCDC_X(mode->hsync_len) | SUNXI_LCDC_Y(mode->vsync_len),
@@ -1223,14 +1236,6 @@
break;
}
- if (mode->vmode != FB_VMODE_NONINTERLACED) {
- printf("Only non-interlaced modes supported, falling back to 1024x768\n");
- mode = &res_mode_init[RES_MODE_1024x768];
- } else {
- printf("Setting up a %dx%d %s console\n", mode->xres,
- mode->yres, sunxi_get_mon_desc(sunxi_display.monitor));
- }
-
sunxi_display.fb_size =
(mode->xres * mode->yres * 4 + 0xfff) & ~0xfff;
if (sunxi_display.fb_size > CONFIG_SUNXI_MAX_FB_SIZE) {
@@ -1240,6 +1245,10 @@
return NULL;
}
+ printf("Setting up a %dx%d%s %s console\n", mode->xres, mode->yres,
+ (mode->vmode == FB_VMODE_INTERLACED) ? "i" : "",
+ sunxi_get_mon_desc(sunxi_display.monitor));
+
gd->fb_base = gd->bd->bi_dram[0].start +
gd->bd->bi_dram[0].size - sunxi_display.fb_size;
sunxi_engines_init();