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drm/imx: use bus_flags for pixel clock polarity

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This patch allows panels to set pixel clock and data enable pin polarity
other than the default of driving data at the falling pixel clock edge
and active high display enable.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel
2016-05-09 17:02:13 +02:00
parent 7932131f63
commit 4ed094fd73
5 changed files with 25 additions and 15 deletions
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13
drivers/gpu/drm/imx/imx-drm-core.c
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@@ -97,8 +97,8 @@ static struct imx_drm_crtc *imx_drm_find_crtc(struct drm_crtc *crtc)
return NULL;
}
int imx_drm_set_bus_format_pins(struct drm_encoder *encoder, u32 bus_format,
int hsync_pin, int vsync_pin)
int imx_drm_set_bus_config(struct drm_encoder *encoder, u32 bus_format,
int hsync_pin, int vsync_pin, u32 bus_flags)
{
struct imx_drm_crtc_helper_funcs *helper;
struct imx_drm_crtc *imx_crtc;
@@ -110,14 +110,17 @@ int imx_drm_set_bus_format_pins(struct drm_encoder *encoder, u32 bus_format,
helper = &imx_crtc->imx_drm_helper_funcs;
if (helper->set_interface_pix_fmt)
return helper->set_interface_pix_fmt(encoder->crtc,
bus_format, hsync_pin, vsync_pin);
bus_format, hsync_pin, vsync_pin,
bus_flags);
return 0;
}
EXPORT_SYMBOL_GPL(imx_drm_set_bus_format_pins);
EXPORT_SYMBOL_GPL(imx_drm_set_bus_config);
int imx_drm_set_bus_format(struct drm_encoder *encoder, u32 bus_format)
{
return imx_drm_set_bus_format_pins(encoder, bus_format, 2, 3);
return imx_drm_set_bus_config(encoder, bus_format, 2, 3,
DRM_BUS_FLAG_DE_HIGH |
DRM_BUS_FLAG_PIXDATA_NEGEDGE);
}
EXPORT_SYMBOL_GPL(imx_drm_set_bus_format);