[PATCH v3 17/18] PCI: j721e: add reset GPIO to struct j721e_pcie

Thomas Richard
2024-02-15T15:18:19Z

From: Théo Lebrun <theo.lebrun@bootlin.com>

Add reset GPIO to struct j721e_pcie, so it can be used at suspend and
resume stages.

Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
---
drivers/pci/controller/cadence/pci-j721e.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c
index 2c87e7728a65..9c588e79f5ac 100644
--- a/drivers/pci/controller/cadence/pci-j721e.c
+++ b/drivers/pci/controller/cadence/pci-j721e.c
@@ -54,6 +54,7 @@ struct j721e_pcie {
struct clk *refclk;
u32 mode;
u32 num_lanes;
+ struct gpio_desc *reset_gpio;
void __iomem *user_cfg_base;
void __iomem *intd_cfg_base;
u32 linkdown_irq_regfield;
@@ -359,7 +360,6 @@ static int j721e_pcie_probe(struct platform_device *pdev)
struct j721e_pcie *pcie;
struct cdns_pcie_rc *rc = NULL;
struct cdns_pcie_ep *ep = NULL;
- struct gpio_desc *gpiod;
void __iomem *base;
struct clk *clk;
u32 num_lanes;
@@ -468,9 +468,9 @@ static int j721e_pcie_probe(struct platform_device *pdev)

switch (mode) {
case PCI_MODE_RC:
- gpiod = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
- if (IS_ERR(gpiod)) {
- ret = PTR_ERR(gpiod);
+ pcie->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(pcie->reset_gpio)) {
+ ret = PTR_ERR(pcie->reset_gpio);
if (ret != -EPROBE_DEFER)
dev_err(dev, "Failed to get reset GPIO\n");
goto err_get_sync;
@@ -504,9 +504,9 @@ static int j721e_pcie_probe(struct platform_device *pdev)
* mode is selected while enabling the PHY. So deassert PERST#
* after 100 us.
*/
- if (gpiod) {
+ if (pcie->reset_gpio) {
usleep_range(100, 200);
- gpiod_set_value_cansleep(gpiod, 1);
+ gpiod_set_value_cansleep(pcie->reset_gpio, 1);
}

ret = cdns_pcie_host_setup(rc);

--
2.39.2