diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2018-02-06 10:35:39 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-02-07 09:08:46 +0100 |
| commit | 08e3211251e36a506ff6b0c31620e362b5800f47 (patch) | |
| tree | 49d795cba06fb5e11375b3ebaa02cdd55958b84f /drivers/gpu/drm/pl111/pl111_display.c | |
| parent | eedd6033b4c88d559afd7c8ac8a76fefcd9834a6 (diff) | |
| download | linux-08e3211251e36a506ff6b0c31620e362b5800f47.tar.bz2 | |
drm/pl111: Support variants with broken VBLANK
The early Integrator CLCD synthesized in the Integrator CP and
IM-PD1 FPGAs are broken: their vertical and next base interrupts
are not functional. Support these variants by simply disabling
the use of the vblank interrupt on these variants.
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180206093540.8147-4-linus.walleij@linaro.org
Diffstat (limited to 'drivers/gpu/drm/pl111/pl111_display.c')
| -rw-r--r-- | drivers/gpu/drm/pl111/pl111_display.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/pl111/pl111_display.c b/drivers/gpu/drm/pl111/pl111_display.c index 4d4e38b4c9d5..d75923896609 100644 --- a/drivers/gpu/drm/pl111/pl111_display.c +++ b/drivers/gpu/drm/pl111/pl111_display.c @@ -256,7 +256,8 @@ static void pl111_display_enable(struct drm_simple_display_pipe *pipe, cntl |= CNTL_LCDPWR; writel(cntl, priv->regs + priv->ctrl); - drm_crtc_vblank_on(crtc); + if (!priv->variant->broken_vblank) + drm_crtc_vblank_on(crtc); } void pl111_display_disable(struct drm_simple_display_pipe *pipe) @@ -266,7 +267,8 @@ void pl111_display_disable(struct drm_simple_display_pipe *pipe) struct pl111_drm_dev_private *priv = drm->dev_private; u32 cntl; - drm_crtc_vblank_off(crtc); + if (!priv->variant->broken_vblank) + drm_crtc_vblank_off(crtc); /* Power Down */ cntl = readl(priv->regs + priv->ctrl); |