| Message ID | 1390398511-8041-4-git-send-email-denis@eukrea.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Jan 22, 2014 at 02:48:28PM +0100, 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: David Airlie <airlied@linux.ie> > Cc: Eric Bénard <eric@eukrea.com> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Cc: Philipp Zabel <p.zabel@pengutronix.de> > Cc: Sascha Hauer <kernel@pengutronix.de> > Cc: Shawn Guo <shawn.guo@linaro.org> > Cc: dri-devel@lists.freedesktop.org > Cc: driverdev-devel@linuxdriverproject.org > Cc: linux-arm-kernel@lists.infradead.org These CC blocks are massive... What's the point of them? > if (np) { > struct drm_display_mode *mode = drm_mode_create(connector->dev); > + struct device_node *timings_np; > + struct device_node *mode_np; > + u32 val; > + > of_get_drm_display_mode(np, &imxpd->mode, 0); > + > + 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) { If of_property_read_u32() fails then val is uninitialized. regards, dan carpenter
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 ce6ba98..ce8e6e4 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 bb71d6d..02aa4da 100644 --- a/drivers/staging/imx-drm/parallel-display.c +++ b/drivers/staging/imx-drm/parallel-display.c @@ -74,7 +74,34 @@ 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; + of_get_drm_display_mode(np, &imxpd->mode, 0); + + 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: David Airlie <airlied@linux.ie> Cc: Eric Bénard <eric@eukrea.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Shawn Guo <shawn.guo@linaro.org> Cc: dri-devel@lists.freedesktop.org Cc: driverdev-devel@linuxdriverproject.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Denis Carikli <denis@eukrea.com> --- 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(-)