| Message ID | 1483366747-34288-3-git-send-email-hverkuil@xs4all.nl (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
On 02.01.2017 15:19, Hans Verkuil wrote: > From: Hans Verkuil <hans.verkuil@cisco.com> > > Implement the HPD notifier support to allow CEC drivers to > be informed when there is a new EDID and when a connect or > disconnect happens. > > Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> > Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> > --- > drivers/gpu/drm/exynos/Kconfig | 1 + > drivers/gpu/drm/exynos/exynos_hdmi.c | 24 +++++++++++++++++++++--- > 2 files changed, 22 insertions(+), 3 deletions(-) > > diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig > index d706ca4..80bfd1d 100644 > --- a/drivers/gpu/drm/exynos/Kconfig > +++ b/drivers/gpu/drm/exynos/Kconfig > @@ -77,6 +77,7 @@ config DRM_EXYNOS_DP > config DRM_EXYNOS_HDMI > bool "HDMI" > depends on DRM_EXYNOS_MIXER || DRM_EXYNOS5433_DECON > + select HPD_NOTIFIERS > help > Choose this option if you want to use Exynos HDMI for DRM. > > diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c > index 5ed8b1e..28bf609 100644 > --- a/drivers/gpu/drm/exynos/exynos_hdmi.c > +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c > @@ -31,6 +31,7 @@ > #include <linux/pm_runtime.h> > #include <linux/clk.h> > #include <linux/gpio/consumer.h> > +#include <linux/hpd-notifier.h> > #include <linux/regulator/consumer.h> > #include <linux/io.h> > #include <linux/of_address.h> > @@ -118,6 +119,7 @@ struct hdmi_context { > bool dvi_mode; > struct delayed_work hotplug_work; > struct drm_display_mode current_mode; > + struct hpd_notifier *notifier; > const struct hdmi_driver_data *drv_data; > > void __iomem *regs; > @@ -807,9 +809,12 @@ static enum drm_connector_status hdmi_detect(struct drm_connector *connector, > { > struct hdmi_context *hdata = connector_to_hdmi(connector); > > - if (gpiod_get_value(hdata->hpd_gpio)) > + if (gpiod_get_value(hdata->hpd_gpio)) { > + hpd_event_connect(hdata->notifier); > return connector_status_connected; > + } > > + hpd_event_disconnect(hdata->notifier); > return connector_status_disconnected; > } > > @@ -848,6 +853,9 @@ static int hdmi_get_modes(struct drm_connector *connector) > edid->width_cm, edid->height_cm); > > drm_mode_connector_update_edid_property(connector, edid); > + hpd_event_connect(hdata->notifier); Is there a reason to call hpd_event_connect here? It was called already from hdmi_detect. Regards Andrzej > + hpd_event_new_edid(hdata->notifier, edid, > + EDID_LENGTH * (1 + edid->extensions)); > > ret = drm_add_edid_modes(connector, edid); > > @@ -1483,6 +1491,7 @@ static void hdmi_disable(struct drm_encoder *encoder) > if (funcs && funcs->disable) > (*funcs->disable)(crtc); > > + hpd_event_disconnect(hdata->notifier); > cancel_delayed_work(&hdata->hotplug_work); > > hdmiphy_disable(hdata); > @@ -1832,15 +1841,22 @@ static int hdmi_probe(struct platform_device *pdev) > } > } > > + hdata->notifier = hpd_notifier_get(&pdev->dev); > + if (hdata->notifier == NULL) { > + ret = -ENOMEM; > + goto err_hdmiphy; > + } > + > pm_runtime_enable(dev); > > ret = component_add(&pdev->dev, &hdmi_component_ops); > if (ret) > - goto err_disable_pm_runtime; > + goto err_notifier_put; > > return ret; > > -err_disable_pm_runtime: > +err_notifier_put: > + hpd_notifier_put(hdata->notifier); > pm_runtime_disable(dev); > > err_hdmiphy: > @@ -1859,9 +1875,11 @@ static int hdmi_remove(struct platform_device *pdev) > struct hdmi_context *hdata = platform_get_drvdata(pdev); > > cancel_delayed_work_sync(&hdata->hotplug_work); > + hpd_event_disconnect(hdata->notifier); > > component_del(&pdev->dev, &hdmi_component_ops); > > + hpd_notifier_put(hdata->notifier); > pm_runtime_disable(&pdev->dev); > > if (!IS_ERR(hdata->reg_hdmi_en)) -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 01/03/2017 08:55 AM, Andrzej Hajda wrote: > On 02.01.2017 15:19, Hans Verkuil wrote: >> From: Hans Verkuil <hans.verkuil@cisco.com> >> >> Implement the HPD notifier support to allow CEC drivers to >> be informed when there is a new EDID and when a connect or >> disconnect happens. >> >> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> >> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> >> --- >> drivers/gpu/drm/exynos/Kconfig | 1 + >> drivers/gpu/drm/exynos/exynos_hdmi.c | 24 +++++++++++++++++++++--- >> 2 files changed, 22 insertions(+), 3 deletions(-) >> >> diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig >> index d706ca4..80bfd1d 100644 >> --- a/drivers/gpu/drm/exynos/Kconfig >> +++ b/drivers/gpu/drm/exynos/Kconfig >> @@ -77,6 +77,7 @@ config DRM_EXYNOS_DP >> config DRM_EXYNOS_HDMI >> bool "HDMI" >> depends on DRM_EXYNOS_MIXER || DRM_EXYNOS5433_DECON >> + select HPD_NOTIFIERS >> help >> Choose this option if you want to use Exynos HDMI for DRM. >> >> diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c >> index 5ed8b1e..28bf609 100644 >> --- a/drivers/gpu/drm/exynos/exynos_hdmi.c >> +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c >> @@ -31,6 +31,7 @@ >> #include <linux/pm_runtime.h> >> #include <linux/clk.h> >> #include <linux/gpio/consumer.h> >> +#include <linux/hpd-notifier.h> >> #include <linux/regulator/consumer.h> >> #include <linux/io.h> >> #include <linux/of_address.h> >> @@ -118,6 +119,7 @@ struct hdmi_context { >> bool dvi_mode; >> struct delayed_work hotplug_work; >> struct drm_display_mode current_mode; >> + struct hpd_notifier *notifier; >> const struct hdmi_driver_data *drv_data; >> >> void __iomem *regs; >> @@ -807,9 +809,12 @@ static enum drm_connector_status hdmi_detect(struct drm_connector *connector, >> { >> struct hdmi_context *hdata = connector_to_hdmi(connector); >> >> - if (gpiod_get_value(hdata->hpd_gpio)) >> + if (gpiod_get_value(hdata->hpd_gpio)) { >> + hpd_event_connect(hdata->notifier); >> return connector_status_connected; >> + } >> >> + hpd_event_disconnect(hdata->notifier); >> return connector_status_disconnected; >> } >> >> @@ -848,6 +853,9 @@ static int hdmi_get_modes(struct drm_connector *connector) >> edid->width_cm, edid->height_cm); >> >> drm_mode_connector_update_edid_property(connector, edid); >> + hpd_event_connect(hdata->notifier); > > Is there a reason to call hpd_event_connect here? It was called already > from hdmi_detect. True. Will drop this. Hans > > Regards > Andrzej > >> + hpd_event_new_edid(hdata->notifier, edid, >> + EDID_LENGTH * (1 + edid->extensions)); >> >> ret = drm_add_edid_modes(connector, edid); >> >> @@ -1483,6 +1491,7 @@ static void hdmi_disable(struct drm_encoder *encoder) >> if (funcs && funcs->disable) >> (*funcs->disable)(crtc); >> >> + hpd_event_disconnect(hdata->notifier); >> cancel_delayed_work(&hdata->hotplug_work); >> >> hdmiphy_disable(hdata); >> @@ -1832,15 +1841,22 @@ static int hdmi_probe(struct platform_device *pdev) >> } >> } >> >> + hdata->notifier = hpd_notifier_get(&pdev->dev); >> + if (hdata->notifier == NULL) { >> + ret = -ENOMEM; >> + goto err_hdmiphy; >> + } >> + >> pm_runtime_enable(dev); >> >> ret = component_add(&pdev->dev, &hdmi_component_ops); >> if (ret) >> - goto err_disable_pm_runtime; >> + goto err_notifier_put; >> >> return ret; >> >> -err_disable_pm_runtime: >> +err_notifier_put: >> + hpd_notifier_put(hdata->notifier); >> pm_runtime_disable(dev); >> >> err_hdmiphy: >> @@ -1859,9 +1875,11 @@ static int hdmi_remove(struct platform_device *pdev) >> struct hdmi_context *hdata = platform_get_drvdata(pdev); >> >> cancel_delayed_work_sync(&hdata->hotplug_work); >> + hpd_event_disconnect(hdata->notifier); >> >> component_del(&pdev->dev, &hdmi_component_ops); >> >> + hpd_notifier_put(hdata->notifier); >> pm_runtime_disable(&pdev->dev); >> >> if (!IS_ERR(hdata->reg_hdmi_en)) > > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig index d706ca4..80bfd1d 100644 --- a/drivers/gpu/drm/exynos/Kconfig +++ b/drivers/gpu/drm/exynos/Kconfig @@ -77,6 +77,7 @@ config DRM_EXYNOS_DP config DRM_EXYNOS_HDMI bool "HDMI" depends on DRM_EXYNOS_MIXER || DRM_EXYNOS5433_DECON + select HPD_NOTIFIERS help Choose this option if you want to use Exynos HDMI for DRM. diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index 5ed8b1e..28bf609 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -31,6 +31,7 @@ #include <linux/pm_runtime.h> #include <linux/clk.h> #include <linux/gpio/consumer.h> +#include <linux/hpd-notifier.h> #include <linux/regulator/consumer.h> #include <linux/io.h> #include <linux/of_address.h> @@ -118,6 +119,7 @@ struct hdmi_context { bool dvi_mode; struct delayed_work hotplug_work; struct drm_display_mode current_mode; + struct hpd_notifier *notifier; const struct hdmi_driver_data *drv_data; void __iomem *regs; @@ -807,9 +809,12 @@ static enum drm_connector_status hdmi_detect(struct drm_connector *connector, { struct hdmi_context *hdata = connector_to_hdmi(connector); - if (gpiod_get_value(hdata->hpd_gpio)) + if (gpiod_get_value(hdata->hpd_gpio)) { + hpd_event_connect(hdata->notifier); return connector_status_connected; + } + hpd_event_disconnect(hdata->notifier); return connector_status_disconnected; } @@ -848,6 +853,9 @@ static int hdmi_get_modes(struct drm_connector *connector) edid->width_cm, edid->height_cm); drm_mode_connector_update_edid_property(connector, edid); + hpd_event_connect(hdata->notifier); + hpd_event_new_edid(hdata->notifier, edid, + EDID_LENGTH * (1 + edid->extensions)); ret = drm_add_edid_modes(connector, edid); @@ -1483,6 +1491,7 @@ static void hdmi_disable(struct drm_encoder *encoder) if (funcs && funcs->disable) (*funcs->disable)(crtc); + hpd_event_disconnect(hdata->notifier); cancel_delayed_work(&hdata->hotplug_work); hdmiphy_disable(hdata); @@ -1832,15 +1841,22 @@ static int hdmi_probe(struct platform_device *pdev) } } + hdata->notifier = hpd_notifier_get(&pdev->dev); + if (hdata->notifier == NULL) { + ret = -ENOMEM; + goto err_hdmiphy; + } + pm_runtime_enable(dev); ret = component_add(&pdev->dev, &hdmi_component_ops); if (ret) - goto err_disable_pm_runtime; + goto err_notifier_put; return ret; -err_disable_pm_runtime: +err_notifier_put: + hpd_notifier_put(hdata->notifier); pm_runtime_disable(dev); err_hdmiphy: @@ -1859,9 +1875,11 @@ static int hdmi_remove(struct platform_device *pdev) struct hdmi_context *hdata = platform_get_drvdata(pdev); cancel_delayed_work_sync(&hdata->hotplug_work); + hpd_event_disconnect(hdata->notifier); component_del(&pdev->dev, &hdmi_component_ops); + hpd_notifier_put(hdata->notifier); pm_runtime_disable(&pdev->dev); if (!IS_ERR(hdata->reg_hdmi_en))