diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/805-display-0015-drm-bridge-cadence-Add-support-for-periodically-poll.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/805-display-0015-drm-bridge-cadence-Add-support-for-periodically-poll.patch | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/target/linux/layerscape/patches-5.4/805-display-0015-drm-bridge-cadence-Add-support-for-periodically-poll.patch b/target/linux/layerscape/patches-5.4/805-display-0015-drm-bridge-cadence-Add-support-for-periodically-poll.patch deleted file mode 100644 index 80dc0cc3e5..0000000000 --- a/target/linux/layerscape/patches-5.4/805-display-0015-drm-bridge-cadence-Add-support-for-periodically-poll.patch +++ /dev/null @@ -1,148 +0,0 @@ -From 35e2ec234646f04eb0e17e4c3a4cf21faed3655a Mon Sep 17 00:00:00 2001 -From: Wen He <wen.he_1@nxp.com> -Date: Wed, 18 Sep 2019 11:05:31 +0800 -Subject: [PATCH] drm: bridge: cadence: Add support for periodically poll the - connector - -Normally, DP/HDMI PHY use HPD_IRQ to monitor the connector connection -status, but LS1028A doesn't support HPD_IRQ signals response. - -This patch allows periodically poll the connector for connection and -disconnection. - -Signed-off-by: Wen He <wen.he_1@nxp.com> ---- - drivers/gpu/drm/bridge/cadence/cdns-dp-core.c | 86 +++++++++++++++++---------- - include/drm/bridge/cdns-mhdp-common.h | 1 + - 2 files changed, 54 insertions(+), 33 deletions(-) - ---- a/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c -+++ b/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c -@@ -276,7 +276,11 @@ static int cdns_dp_bridge_attach(struct - - connector->interlace_allowed = 1; - -- connector->polled = DRM_CONNECTOR_POLL_HPD; -+ if (mhdp->is_hpd) -+ connector->polled = DRM_CONNECTOR_POLL_HPD; -+ else -+ connector->polled = DRM_CONNECTOR_POLL_CONNECT | -+ DRM_CONNECTOR_POLL_DISCONNECT; - - drm_connector_helper_add(connector, &cdns_dp_connector_helper_funcs); - -@@ -439,22 +443,34 @@ static int __cdns_dp_probe(struct platfo - INIT_DELAYED_WORK(&mhdp->hotplug_work, hotplug_work_func); - - iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); -- mhdp->regs_base = devm_ioremap(dev, iores->start, resource_size(iores)); -- if (IS_ERR(mhdp->regs_base)) -- return -ENOMEM; -+ if (iores) { -+ mhdp->regs_base = devm_ioremap(dev, iores->start, -+ resource_size(iores)); -+ if (IS_ERR(mhdp->regs_base)) -+ return -ENOMEM; -+ } - - iores = platform_get_resource(pdev, IORESOURCE_MEM, 1); -- mhdp->regs_sec = devm_ioremap(dev, iores->start, resource_size(iores)); -- if (IS_ERR(mhdp->regs_sec)) -- return -ENOMEM; -+ if (iores) { -+ mhdp->regs_sec = devm_ioremap(dev, iores->start, -+ resource_size(iores)); -+ if (IS_ERR(mhdp->regs_sec)) -+ return -ENOMEM; -+ } -+ -+ mhdp->is_hpd = true; - - mhdp->irq[IRQ_IN] = platform_get_irq_byname(pdev, "plug_in"); -- if (mhdp->irq[IRQ_IN] < 0) -+ if (mhdp->irq[IRQ_IN] < 0) { -+ mhdp->is_hpd = false; - dev_info(dev, "No plug_in irq number\n"); -+ } - - mhdp->irq[IRQ_OUT] = platform_get_irq_byname(pdev, "plug_out"); -- if (mhdp->irq[IRQ_OUT] < 0) -+ if (mhdp->irq[IRQ_OUT] < 0) { -+ mhdp->is_hpd = false; - dev_info(dev, "No plug_out irq number\n"); -+ } - - cdns_dp_parse_dt(mhdp); - -@@ -474,33 +490,37 @@ static int __cdns_dp_probe(struct platfo - cdns_mhdp_plat_call(mhdp, phy_set); - - /* Enable Hotplug Detect IRQ thread */ -- irq_set_status_flags(mhdp->irq[IRQ_IN], IRQ_NOAUTOEN); -- ret = devm_request_threaded_irq(dev, mhdp->irq[IRQ_IN], -- NULL, cdns_dp_irq_thread, -- IRQF_ONESHOT, dev_name(dev), -- mhdp); -- if (ret) { -- dev_err(dev, "can't claim irq %d\n", -- mhdp->irq[IRQ_IN]); -- return -EINVAL; -- } -+ if (mhdp->is_hpd) { -+ irq_set_status_flags(mhdp->irq[IRQ_IN], IRQ_NOAUTOEN); -+ ret = devm_request_threaded_irq(dev, mhdp->irq[IRQ_IN], -+ NULL, cdns_dp_irq_thread, -+ IRQF_ONESHOT, dev_name(dev), -+ mhdp); - -- irq_set_status_flags(mhdp->irq[IRQ_OUT], IRQ_NOAUTOEN); -- ret = devm_request_threaded_irq(dev, mhdp->irq[IRQ_OUT], -- NULL, cdns_dp_irq_thread, -- IRQF_ONESHOT, dev_name(dev), -- mhdp); -- if (ret) { -- dev_err(dev, "can't claim irq %d\n", -- mhdp->irq[IRQ_OUT]); -- return -EINVAL; -+ if (ret) { -+ dev_err(dev, "can't claim irq %d\n", -+ mhdp->irq[IRQ_IN]); -+ return -EINVAL; -+ } -+ -+ irq_set_status_flags(mhdp->irq[IRQ_OUT], IRQ_NOAUTOEN); -+ ret = devm_request_threaded_irq(dev, mhdp->irq[IRQ_OUT], -+ NULL, cdns_dp_irq_thread, -+ IRQF_ONESHOT, dev_name(dev), -+ mhdp); -+ -+ if (ret) { -+ dev_err(dev, "can't claim irq %d\n", -+ mhdp->irq[IRQ_OUT]); -+ return -EINVAL; -+ } -+ -+ if (cdns_mhdp_read_hpd(mhdp)) -+ enable_irq(mhdp->irq[IRQ_OUT]); -+ else -+ enable_irq(mhdp->irq[IRQ_IN]); - } - -- if (cdns_mhdp_read_hpd(mhdp)) -- enable_irq(mhdp->irq[IRQ_OUT]); -- else -- enable_irq(mhdp->irq[IRQ_IN]); -- - mhdp->bridge.base.driver_private = mhdp; - mhdp->bridge.base.funcs = &cdns_dp_bridge_funcs; - #ifdef CONFIG_OF ---- a/include/drm/bridge/cdns-mhdp-common.h -+++ b/include/drm/bridge/cdns-mhdp-common.h -@@ -683,6 +683,7 @@ struct cdns_mhdp_device { - bool link_up; - bool power_up; - bool plugged; -+ bool is_hpd; - struct mutex lock; - - int irq[IRQ_NUM]; |