diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/tegra20/tegra-dc.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/video/tegra20/tegra-dc.c b/drivers/video/tegra20/tegra-dc.c index 10ad21efb0f..d073da7d7d4 100644 --- a/drivers/video/tegra20/tegra-dc.c +++ b/drivers/video/tegra20/tegra-dc.c @@ -218,8 +218,11 @@ static const u32 rgb_sel_tab[PIN_OUTPUT_SEL_COUNT] = { 0x00020000, }; -static void rgb_enable(struct dc_com_reg *com) +static void rgb_enable(struct tegra_lcd_priv *priv) { + struct dc_com_reg *com = &priv->dc->com; + struct display_timing *dt = &priv->timing; + u32 value; int i; for (i = 0; i < PIN_REG_COUNT; i++) { @@ -228,6 +231,21 @@ static void rgb_enable(struct dc_com_reg *com) writel(rgb_data_tab[i], &com->pin_output_data[i]); } + /* configure H- and V-sync signal polarities */ + value = readl(&com->pin_output_polarity[1]); + + if (dt->flags & DISPLAY_FLAGS_HSYNC_LOW) + value |= LHS_OUTPUT_POLARITY_LOW; + else + value &= ~LHS_OUTPUT_POLARITY_LOW; + + if (dt->flags & DISPLAY_FLAGS_VSYNC_LOW) + value |= LVS_OUTPUT_POLARITY_LOW; + else + value &= ~LVS_OUTPUT_POLARITY_LOW; + + writel(value, &com->pin_output_polarity[1]); + for (i = 0; i < PIN_OUTPUT_SEL_COUNT; i++) writel(rgb_sel_tab[i], &com->pin_output_sel[i]); } @@ -327,7 +345,7 @@ static int tegra_display_probe(struct tegra_lcd_priv *priv, basic_init_timer(&priv->dc->disp); if (priv->soc->has_rgb) - rgb_enable(&priv->dc->com); + rgb_enable(priv); if (priv->pixel_clock) update_display_mode(priv); |