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drm: rcar-du: Remove LVDS and HDMI encoders chaining restriction 

The rcar-du driver refuses connecting an LVDS output to an HDMI encoder.
There is not technical reason for that restriction, remove it.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
This commit is contained in:
Laurent Pinchart 2014-10-26 01:14:27 +03:00
parent 49785e2581
commit 5e433b6312
2 changed files with 15 additions and 7 deletions
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7
drivers/gpu/drm/rcar-du/rcar_du_encoder.c
View File

@ -190,13 +190,6 @@ int rcar_du_encoder_init(struct rcar_du_device *rcdu,
}
if (type == RCAR_DU_ENCODER_HDMI) {
if (renc->lvds) {
dev_err(rcdu->dev,
"Chaining LVDS and HDMI encoders not supported\n");
ret = -EINVAL;
goto done;
}
ret = rcar_du_hdmienc_init(rcdu, renc, enc_node);
if (ret < 0)
goto done;

15
drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c
View File

@ -21,6 +21,7 @@
#include "rcar_du_drv.h"
#include "rcar_du_encoder.h"
#include "rcar_du_hdmienc.h"
#include "rcar_du_lvdsenc.h"
struct rcar_du_hdmienc {
struct rcar_du_encoder *renc;
@ -39,9 +40,15 @@ static void rcar_du_hdmienc_dpms(struct drm_encoder *encoder, int mode)
if (hdmienc->dpms == mode)
return;
if (mode == DRM_MODE_DPMS_ON && hdmienc->renc->lvds)
rcar_du_lvdsenc_dpms(hdmienc->renc->lvds, encoder->crtc, mode);
if (sfuncs->dpms)
sfuncs->dpms(encoder, mode);
if (mode != DRM_MODE_DPMS_ON && hdmienc->renc->lvds)
rcar_du_lvdsenc_dpms(hdmienc->renc->lvds, encoder->crtc, mode);
hdmienc->dpms = mode;
}
@ -49,8 +56,16 @@ static bool rcar_du_hdmienc_mode_fixup(struct drm_encoder *encoder,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct rcar_du_hdmienc *hdmienc = to_rcar_hdmienc(encoder);
struct drm_encoder_slave_funcs *sfuncs = to_slave_funcs(encoder);
/* The internal LVDS encoder has a clock frequency operating range of
* 30MHz to 150MHz. Clamp the clock accordingly.
*/
if (hdmienc->renc->lvds)
adjusted_mode->clock = clamp(adjusted_mode->clock,
30000, 150000);
if (sfuncs->mode_fixup == NULL)
return true;