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drm/tegra: dc: Unify enabling the display controller

Telusuri Sumber 
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
orang tua 8f604f8c4d
melakukan 666cb87332
5 mengubah file dengan 16 tambahan dan 52 penghapusan
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11
drivers/gpu/drm/tegra/rgb.c
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@@ -168,16 +168,6 @@ static void tegra_rgb_encoder_mode_set(struct drm_encoder *encoder,
value = SC0_H_QUALIFIER_NONE | SC1_H_QUALIFIER_NONE;
tegra_dc_writel(rgb->dc, value, DC_DISP_SHIFT_CLOCK_OPTIONS);
value = tegra_dc_readl(rgb->dc, DC_CMD_DISPLAY_COMMAND);
value &= ~DISP_CTRL_MODE_MASK;
value |= DISP_CTRL_MODE_C_DISPLAY;
tegra_dc_writel(rgb->dc, value, DC_CMD_DISPLAY_COMMAND);
value = tegra_dc_readl(rgb->dc, DC_CMD_DISPLAY_POWER_CONTROL);
value |= PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE |
PW4_ENABLE | PM0_ENABLE | PM1_ENABLE;
tegra_dc_writel(rgb->dc, value, DC_CMD_DISPLAY_POWER_CONTROL);
tegra_dc_commit(rgb->dc);
if (output->panel)
@@ -193,6 +183,7 @@ static void tegra_rgb_encoder_disable(struct drm_encoder *encoder)
drm_panel_disable(output->panel);
tegra_dc_write_regs(rgb->dc, rgb_disable, ARRAY_SIZE(rgb_disable));
tegra_dc_commit(rgb->dc);
if (output->panel)
drm_panel_unprepare(output->panel);