diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2019-04-01 15:33:42 +0300 |
|---|---|---|
| committer | Andrzej Hajda <a.hajda@samsung.com> | 2019-04-12 10:38:39 +0300 |
| commit | 3d31e21522819925313a95174b3071ee408c12dd (patch) | |
| tree | e9d2aab21e96e0f37b80af296bae09e5089b0860 /drivers/gpu/drm/bridge | |
| parent | beb941b970fb129dae206050593d3e768859b146 (diff) | |
| download | linux-3d31e21522819925313a95174b3071ee408c12dd.tar.xz | |
drm/bridge: ti-tfp410: Fall back to HPD polling if HPD irq is not available
In case either the HPD gpio is not specified or when the HPD gpio can not
be used as interrupt we should tell the core that the HPD needs to be
polled for detecting hotplug.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190401123342.15767-1-peter.ujfalusi@ti.com
Diffstat (limited to 'drivers/gpu/drm/bridge')
| -rw-r--r-- | drivers/gpu/drm/bridge/ti-tfp410.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/gpu/drm/bridge/ti-tfp410.c b/drivers/gpu/drm/bridge/ti-tfp410.c index 285be4a0f4bd..6fc831eb3804 100644 --- a/drivers/gpu/drm/bridge/ti-tfp410.c +++ b/drivers/gpu/drm/bridge/ti-tfp410.c @@ -31,6 +31,7 @@ struct tfp410 { struct i2c_adapter *ddc; struct gpio_desc *hpd; + int hpd_irq; struct delayed_work hpd_work; struct gpio_desc *powerdown; @@ -124,8 +125,10 @@ static int tfp410_attach(struct drm_bridge *bridge) return -ENODEV; } - if (dvi->hpd) + if (dvi->hpd_irq >= 0) dvi->connector.polled = DRM_CONNECTOR_POLL_HPD; + else + dvi->connector.polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT; drm_connector_helper_add(&dvi->connector, &tfp410_con_helper_funcs); @@ -324,10 +327,15 @@ static int tfp410_init(struct device *dev, bool i2c) return PTR_ERR(dvi->powerdown); } - if (dvi->hpd) { + if (dvi->hpd) + dvi->hpd_irq = gpiod_to_irq(dvi->hpd); + else + dvi->hpd_irq = -ENXIO; + + if (dvi->hpd_irq >= 0) { INIT_DELAYED_WORK(&dvi->hpd_work, tfp410_hpd_work_func); - ret = devm_request_threaded_irq(dev, gpiod_to_irq(dvi->hpd), + ret = devm_request_threaded_irq(dev, dvi->hpd_irq, NULL, tfp410_hpd_irq_thread, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "hdmi-hpd", dvi); |