[PATCH v2 07/15] phy: ti: phy-j721e-wiz: add resume support

Thomas Richard
2024-01-26T14:37:53Z

Add resume support.
It has been tested on J7200 SR1.0 and SR2.0.

Based on the work of Théo Lebrun <theo.lebrun@bootlin.com>

Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
---
drivers/phy/ti/phy-j721e-wiz.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)

diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c
index 09f7edf16562..163ac3e95ddb 100644
--- a/drivers/phy/ti/phy-j721e-wiz.c
+++ b/drivers/phy/ti/phy-j721e-wiz.c
@@ -1666,12 +1666,47 @@ static void wiz_remove(struct platform_device *pdev)
pm_runtime_disable(dev);
}

+static int wiz_resume_noirq(struct device *dev)
+{
+ struct device_node *node = dev->of_node;
+ struct wiz *wiz = dev_get_drvdata(dev);
+ int ret;
+
+ /* Enable supplemental Control override if available */
+ if (wiz->sup_legacy_clk_override)
+ regmap_field_write(wiz->sup_legacy_clk_override, 1);
+
+ ret = wiz_clock_init(wiz, node, false);
+ if (ret < 0) {
+ dev_warn(dev, "Failed to initialize clocks\n");
+ goto err_get_sync;
+ }
+
+ ret = wiz_init(wiz);
+ if (ret) {
+ dev_err(dev, "WIZ initialization failed\n");
+ goto err_wiz_init;
+ }
+
+ return 0;
+
+err_wiz_init:
+ wiz_clock_cleanup(wiz, node);
+
+err_get_sync:
+
+ return ret;
+}
+
+static DEFINE_NOIRQ_DEV_PM_OPS(wiz_pm_ops, NULL, wiz_resume_noirq);
+
static struct platform_driver wiz_driver = {
.probe = wiz_probe,
.remove_new = wiz_remove,
.driver = {
.name = "wiz",
.of_match_table = wiz_id_table,
+ .pm = pm_sleep_ptr(&wiz_pm_ops),
},
};
module_platform_driver(wiz_driver);

--
2.39.2