From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: From: Jeffy Chen To: linux-kernel@vger.kernel.org, bhelgaas@google.com Subject: [PATCH v4 2/4] PCI: rockchip: Add support for pcie wake irq Date: Tue, 22 Aug 2017 11:19:32 +0800 Message-Id: <20170822031934.8675-3-jeffy.chen@rock-chips.com> In-Reply-To: <20170822031934.8675-1-jeffy.chen@rock-chips.com> References: <20170822031934.8675-1-jeffy.chen@rock-chips.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jeffy Chen , Heiko Stuebner , linux-pci@vger.kernel.org, shawn.lin@rock-chips.com, briannorris@chromium.org, dianders@chromium.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+bjorn=helgaas.com@lists.infradead.org List-ID: Add support for PCIE_WAKE pin in rockchip pcie driver. Signed-off-by: Jeffy Chen --- Changes in v4: None Changes in v3: Fix error handling Changes in v2: Use dev_pm_set_dedicated_wake_irq -- Suggested by Brian Norris drivers/pci/host/pcie-rockchip.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c index 5d85ec2e2fb0..a0f7267984da 100644 --- a/drivers/pci/host/pcie-rockchip.c +++ b/drivers/pci/host/pcie-rockchip.c @@ -37,6 +37,7 @@ #include #include #include +#include #include #include @@ -1111,6 +1112,15 @@ static int rockchip_pcie_parse_dt(struct rockchip_pcie *rockchip) return err; } + /* Must init wakeup before setting dedicated wake irq. */ + device_init_wakeup(dev, true); + irq = platform_get_irq_byname(pdev, "wake"); + if (irq >= 0) { + err = dev_pm_set_dedicated_wake_irq(dev, irq); + if (err) + dev_err(dev, "failed to setup PCIe wake IRQ\n"); + } + rockchip->vpcie12v = devm_regulator_get_optional(dev, "vpcie12v"); if (IS_ERR(rockchip->vpcie12v)) { if (PTR_ERR(rockchip->vpcie12v) == -EPROBE_DEFER) @@ -1493,12 +1503,13 @@ static int rockchip_pcie_probe(struct platform_device *pdev) err = rockchip_pcie_parse_dt(rockchip); if (err) - return err; + /* It's safe to disable wake even not enabled */ + goto err_disable_wake; err = clk_prepare_enable(rockchip->aclk_pcie); if (err) { dev_err(dev, "unable to enable aclk_pcie clock\n"); - return err; + goto err_disable_wake; } err = clk_prepare_enable(rockchip->aclk_perf_pcie); @@ -1633,6 +1644,9 @@ static int rockchip_pcie_probe(struct platform_device *pdev) clk_disable_unprepare(rockchip->aclk_perf_pcie); err_disable_aclk_pcie: clk_disable_unprepare(rockchip->aclk_pcie); +err_disable_wake: + dev_pm_clear_wake_irq(dev); + device_init_wakeup(dev, false); return err; } @@ -1662,6 +1676,9 @@ static int rockchip_pcie_remove(struct platform_device *pdev) if (!IS_ERR(rockchip->vpcie12v)) regulator_disable(rockchip->vpcie12v); + dev_pm_clear_wake_irq(dev); + device_init_wakeup(dev, false); + return 0; } -- 2.11.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel