| Message ID | 1392991205-25371-4-git-send-email-denis@eukrea.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi, Denis Carikli wrote: > If de-active and/or pixelclk-active properties were set in the > display-timings DT node, they were not used. > > Instead the data-enable and the pixel data clock polarity > were hardcoded. > > This change is needed for making the eukrea-cpuimx51 > QVGA display work. > > Cc: Eric Bénard <eric@eukrea.com> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Cc: Sascha Hauer <kernel@pengutronix.de> > Cc: devel@driverdev.osuosl.org > Cc: linux-arm-kernel@lists.infradead.org > Signed-off-by: Denis Carikli <denis@eukrea.com> > --- > ChangeLog v6->v7: > - Shrinked even more the Cc list. > - Rebased the patch > - val is now initialized in imx_pd_connector_get_modes > > ChangeLog v5->v6: > - Remove people not concerned by this patch from the Cc list. > - Removed wrong coments from the code. > - Corrected the code style of the "if (!!val)" > > ChangeLog v3->v4: > - The old patch was named "staging: imx-drm: ipuv3-crtc: don't harcode some mode". > - Reworked the patch entierly: we now takes the mode flags from the device tree. > > ChangeLog v2->v3: > - Added some interested people in the Cc list. > - Ajusted the flags to match the changes in "drm: Add the lacking > DRM_MODE_FLAG_* for matching the DISPLAY_FLAGS_*" > --- > drivers/staging/imx-drm/imx-drm.h | 3 +++ > drivers/staging/imx-drm/ipuv3-crtc.c | 8 ++++++-- > drivers/staging/imx-drm/parallel-display.c | 27 +++++++++++++++++++++++++++ > 3 files changed, 36 insertions(+), 2 deletions(-) > > diff --git a/drivers/staging/imx-drm/imx-drm.h b/drivers/staging/imx-drm/imx-drm.h > index ae90c9c..dfdc180 100644 > --- a/drivers/staging/imx-drm/imx-drm.h > +++ b/drivers/staging/imx-drm/imx-drm.h > @@ -5,6 +5,9 @@ > > #define IPU_PIX_FMT_GBR24 v4l2_fourcc('G', 'B', 'R', '3') > > +#define IMXDRM_MODE_FLAG_DE_HIGH (1<<0) > +#define IMXDRM_MODE_FLAG_PIXDATA_POSEDGE (1<<1) > + CodingStyle: spaces around operators...? Lothar Waßmann
diff --git a/drivers/staging/imx-drm/imx-drm.h b/drivers/staging/imx-drm/imx-drm.h index ae90c9c..dfdc180 100644 --- a/drivers/staging/imx-drm/imx-drm.h +++ b/drivers/staging/imx-drm/imx-drm.h @@ -5,6 +5,9 @@ #define IPU_PIX_FMT_GBR24 v4l2_fourcc('G', 'B', 'R', '3') +#define IMXDRM_MODE_FLAG_DE_HIGH (1<<0) +#define IMXDRM_MODE_FLAG_PIXDATA_POSEDGE (1<<1) + struct drm_crtc; struct drm_connector; struct drm_device; diff --git a/drivers/staging/imx-drm/ipuv3-crtc.c b/drivers/staging/imx-drm/ipuv3-crtc.c index 22be104..fbb3793 100644 --- a/drivers/staging/imx-drm/ipuv3-crtc.c +++ b/drivers/staging/imx-drm/ipuv3-crtc.c @@ -156,8 +156,12 @@ static int ipu_crtc_mode_set(struct drm_crtc *crtc, if (mode->flags & DRM_MODE_FLAG_PVSYNC) sig_cfg.Vsync_pol = 1; - sig_cfg.enable_pol = 1; - sig_cfg.clk_pol = 1; + if (mode->private_flags & IMXDRM_MODE_FLAG_DE_HIGH) + sig_cfg.enable_pol = 1; + + if (mode->private_flags & IMXDRM_MODE_FLAG_PIXDATA_POSEDGE) + sig_cfg.clk_pol = 1; + sig_cfg.width = mode->hdisplay; sig_cfg.height = mode->vdisplay; sig_cfg.pixel_fmt = out_pixel_fmt; diff --git a/drivers/staging/imx-drm/parallel-display.c b/drivers/staging/imx-drm/parallel-display.c index bc2946e..3f7f09d 100644 --- a/drivers/staging/imx-drm/parallel-display.c +++ b/drivers/staging/imx-drm/parallel-display.c @@ -75,7 +75,34 @@ static int imx_pd_connector_get_modes(struct drm_connector *connector) if (np) { struct drm_display_mode *mode = drm_mode_create(connector->dev); + struct device_node *timings_np; + struct device_node *mode_np; + u32 val = 1; + of_get_drm_display_mode(np, &imxpd->mode, OF_USE_NATIVE_MODE); + + timings_np = of_get_child_by_name(np, "display-timings"); + if (timings_np) { + /* get the display mode node */ + mode_np = of_parse_phandle(timings_np, + "native-mode", 0); + if (!mode_np) + mode_np = of_get_next_child(timings_np, NULL); + + /* set de-active to 1 if not set */ + of_property_read_u32(mode_np, "de-active", &val); + if (val) { + imxpd->mode.private_flags |= + IMXDRM_MODE_FLAG_DE_HIGH; + } + + /* set pixelclk-active to 1 if not set */ + of_property_read_u32(mode_np, "pixelclk-active", &val); + if (val) { + imxpd->mode.private_flags |= + IMXDRM_MODE_FLAG_PIXDATA_POSEDGE; + } + } drm_mode_copy(mode, &imxpd->mode); mode->type |= DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED, drm_mode_probed_add(connector, mode);
If de-active and/or pixelclk-active properties were set in the display-timings DT node, they were not used. Instead the data-enable and the pixel data clock polarity were hardcoded. This change is needed for making the eukrea-cpuimx51 QVGA display work. Cc: Eric Bénard <eric@eukrea.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: devel@driverdev.osuosl.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Denis Carikli <denis@eukrea.com> --- ChangeLog v6->v7: - Shrinked even more the Cc list. - Rebased the patch - val is now initialized in imx_pd_connector_get_modes ChangeLog v5->v6: - Remove people not concerned by this patch from the Cc list. - Removed wrong coments from the code. - Corrected the code style of the "if (!!val)" ChangeLog v3->v4: - The old patch was named "staging: imx-drm: ipuv3-crtc: don't harcode some mode". - Reworked the patch entierly: we now takes the mode flags from the device tree. ChangeLog v2->v3: - Added some interested people in the Cc list. - Ajusted the flags to match the changes in "drm: Add the lacking DRM_MODE_FLAG_* for matching the DISPLAY_FLAGS_*" --- drivers/staging/imx-drm/imx-drm.h | 3 +++ drivers/staging/imx-drm/ipuv3-crtc.c | 8 ++++++-- drivers/staging/imx-drm/parallel-display.c | 27 +++++++++++++++++++++++++++ 3 files changed, 36 insertions(+), 2 deletions(-)