diff mbox series

[v1,14/15] WIP: PCI: qcom: use pwrseq to power up bus devices

Message ID 20211006035407.1147909-15-dmitry.baryshkov@linaro.org (mailing list archive)
State Handled Elsewhere
Delegated to: Luiz Von Dentz
Headers show
Series create power sequencing subsystem | expand

Checks

Context Check Description
tedd_an/checkpatch success Checkpatch PASS
tedd_an/gitlint fail [v1,14/15] WIP: PCI: qcom: use pwrseq to power up bus devices 1: T5 Title contains the word 'WIP' (case-insensitive): "[v1,14/15] WIP: PCI: qcom: use pwrseq to power up bus devices"

Commit Message

Dmitry Baryshkov Oct. 6, 2021, 3:54 a.m. UTC 
Use bus-pwrseq device tree node to power up the devices on the bus. This
is to be rewritten with the proper code parsing the device tree and
powering up individual devices.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)
diff mbox series

Patch

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 8a7a300163e5..f398283912c7 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -23,6 +23,7 @@ 
 #include <linux/pm_runtime.h>
 #include <linux/platform_device.h>
 #include <linux/phy/phy.h>
+#include <linux/pwrseq/consumer.h>
 #include <linux/regulator/consumer.h>
 #include <linux/reset.h>
 #include <linux/slab.h>
@@ -1467,6 +1468,7 @@  static int qcom_pcie_probe(struct platform_device *pdev)
 	struct pcie_port *pp;
 	struct dw_pcie *pci;
 	struct qcom_pcie *pcie;
+	struct pwrseq *pwrseq;
 	int ret;
 
 	pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
@@ -1520,6 +1522,17 @@  static int qcom_pcie_probe(struct platform_device *pdev)
 
 	pp->ops = &qcom_pcie_dw_ops;
 
+	pwrseq = devm_pwrseq_get(dev, "bus");
+	if (IS_ERR(pwrseq)) {
+		ret = PTR_ERR(pwrseq);
+		goto err_pm_runtime_put;
+	}
+	if (pwrseq) {
+		ret = pwrseq_full_power_on(pwrseq);
+		if (ret)
+			goto err_pm_runtime_put;
+	}
+
 	ret = phy_init(pcie->phy);
 	if (ret) {
 		pm_runtime_disable(&pdev->dev);