diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2020-08-09 00:31:20 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2020-08-13 16:39:15 +0200 |
| commit | f6fd1d70609ca691ee5dc0d2748b6eeaa57a9535 (patch) | |
| tree | 87eb1343094091132bf4378cb79f466e80967e8d /drivers/gpu/drm/mcde/mcde_dsi.c | |
| parent | 44c3867a56e3cdda4b7ea4e4983c4fdafd45b3c9 (diff) | |
| download | linux-f6fd1d70609ca691ee5dc0d2748b6eeaa57a9535.tar.bz2 | |
drm/mcde: Support using DSI in LP mode
It is possible to set a flag in the struct mipi_dsi_device
so the panel is handled in low power (LP) mode. Some displays
only support this mode and it is also good for testing.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: newbytee@protonmail.com
Cc: Stephan Gerhold <stephan@gerhold.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200808223122.1492124-2-linus.walleij@linaro.org
Diffstat (limited to 'drivers/gpu/drm/mcde/mcde_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/mcde/mcde_dsi.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/gpu/drm/mcde/mcde_dsi.c b/drivers/gpu/drm/mcde/mcde_dsi.c index a342e898298b..5cea8cbf084c 100644 --- a/drivers/gpu/drm/mcde/mcde_dsi.c +++ b/drivers/gpu/drm/mcde/mcde_dsi.c @@ -812,10 +812,11 @@ static void mcde_dsi_start(struct mcde_dsi *d) /* Command mode, clear IF1 ID */ val = readl(d->regs + DSI_CMD_MODE_CTL); /* - * If we enable low-power mode here, with - * val |= DSI_CMD_MODE_CTL_IF1_LP_EN + * If we enable low-power mode here, * then display updates become really slow. */ + if (d->mdsi->mode_flags & MIPI_DSI_MODE_LPM) + val |= DSI_CMD_MODE_CTL_IF1_LP_EN; val &= ~DSI_CMD_MODE_CTL_IF1_ID_MASK; writel(val, d->regs + DSI_CMD_MODE_CTL); @@ -904,10 +905,11 @@ static void mcde_dsi_bridge_pre_enable(struct drm_bridge *bridge) /* Command mode, clear IF1 ID */ val = readl(d->regs + DSI_CMD_MODE_CTL); /* - * If we enable low-power mode here with - * val |= DSI_CMD_MODE_CTL_IF1_LP_EN + * If we enable low-power mode here * the display updates become really slow. */ + if (d->mdsi->mode_flags & MIPI_DSI_MODE_LPM) + val |= DSI_CMD_MODE_CTL_IF1_LP_EN; val &= ~DSI_CMD_MODE_CTL_IF1_ID_MASK; writel(val, d->regs + DSI_CMD_MODE_CTL); } |