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drm/tegra: dc: Unify enabling the display controller

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Previously output drivers would enable continuous display mode and power
up the display controller at various points during the initialization.
This is suboptimal because it accesses display controller registers in
output drivers and duplicates a bit of code.

Move this code into the display controller driver and enable the display
controller as the final step of the ->mode_set_nofb() implementation.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding
2014-12-08 16:32:47 +01:00
parent 8f604f8c4d
commit 666cb87332
5 changed files with 16 additions and 52 deletions
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12
drivers/gpu/drm/tegra/dc.c
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@@ -1236,6 +1236,18 @@ static void tegra_crtc_mode_set_nofb(struct drm_crtc *crtc)
value &= ~INTERLACE_ENABLE;
tegra_dc_writel(dc, value, DC_DISP_INTERLACE_CONTROL);
}
value = tegra_dc_readl(dc, DC_CMD_DISPLAY_COMMAND);
value &= ~DISP_CTRL_MODE_MASK;
value |= DISP_CTRL_MODE_C_DISPLAY;
tegra_dc_writel(dc, value, DC_CMD_DISPLAY_COMMAND);
value = tegra_dc_readl(dc, DC_CMD_DISPLAY_POWER_CONTROL);
value |= PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE |
PW4_ENABLE | PM0_ENABLE | PM1_ENABLE;
tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL);
tegra_dc_commit(dc);
}
static void tegra_crtc_prepare(struct drm_crtc *crtc)