commit 15ae8e741f7cc67763ac51f72464f6458a1177fa
author Clement Calmels <clement.calmels@qorvo.com> Thu Jun 16 16:36:17 2022 +0200
committer Victor Liu <victorliu@google.com> Fri Sep 22 18:21:36 2023 +0000
tree 89ee50561dedb85829181eedeb90fbdbf66fdd1e
parent 9c9c4b9204c5cf9df7394d437540a6d9e0946710

[R-6.3.8] uwb: update qm35 driver

Features:
* Add power management operations to stop HSSPI on suspend and start HSSPI on resume
* Set SS_IRQ as a wake-up interrupt

Bug: 299103117
Change-Id: I869388cf4b4d53b0365e7c180bafe512b9983ad1
Signed-off-by: Clement Calmels <clement.calmels@qorvo.com>
Signed-off-by: Habib Bel Haj Ali <habib.belhajali@qorvo.com>

qm35-spi.c

diff --git a/qm35-spi.c b/qm35-spi.c
index d969e2d..054518f 100644
--- a/qm35-spi.c
+++ b/qm35-spi.c
@@ -94,6 +94,11 @@
 module_param(wake_use_csn, bool, 0444);
 MODULE_PARM_DESC(wake_use_csn, "Use HSSPI CSn pin to wake up QM35");
 
+static bool wake_on_ssirq = true;
+module_param(wake_on_ssirq, bool, 0644);
+MODULE_PARM_DESC(wake_on_ssirq,
+		 "Allow QM35 to wakeup the platform using ss_irq");
+
 int trace_spi_xfers;
 module_param(trace_spi_xfers, int, 0444);
 MODULE_PARM_DESC(trace_spi_xfers, "Trace all the SPI transfers");
@@ -592,6 +597,13 @@
 		ss_irqflags = irq_get_trigger_type(qm35_ctx->spi->irq);
 	}
 
+	if (wake_on_ssirq) {
+		ret = enable_irq_wake(qm35_ctx->spi->irq);
+		if (ret) {
+			return ret;
+		}
+	}
+
 	qm35_ctx->hsspi.odw_cleared = reenable_ss_irq;
 	qm35_ctx->hsspi.wakeup = qm35_wakeup;
 	qm35_ctx->hsspi.reset_qm35 = qm35_reset_hook;
@@ -895,10 +907,34 @@
 	return 0;
 }
 
+#ifdef CONFIG_PM_SLEEP
+static int qm35_pm_suspend(struct device *dev)
+{
+	struct qm35_ctx *qm35_hdl = dev_get_drvdata(dev);
+
+	qm35_hsspi_stop(qm35_hdl);
+
+	return 0;
+}
+
+static int qm35_pm_resume(struct device *dev)
+{
+	struct qm35_ctx *qm35_hdl = dev_get_drvdata(dev);
+
+	qm35_hsspi_start(qm35_hdl);
+
+	return 0;
+}
+#endif /* CONFIG_PM_SLEEP */
+
+static SIMPLE_DEV_PM_OPS(qm35_spi_ops, qm35_pm_suspend, qm35_pm_resume);
+#define pm_sleep_ptr(_ptr) (IS_ENABLED(CONFIG_PM_SLEEP) ? (_ptr) : NULL)
+
 static struct spi_driver qm35_spi_driver = {
 	.driver = {
 		.name           = "qm35",
 		.of_match_table = of_match_ptr(qm35_dt_ids),
+		.pm = pm_sleep_ptr(&qm35_spi_ops),
 	},
 	.probe =	qm35_probe,
 	.remove =	qm35_remove,

qm35.h

diff --git a/qm35.h b/qm35.h
index 6f967e7..59cf825 100644
--- a/qm35.h
+++ b/qm35.h
@@ -24,7 +24,7 @@
 #define QM_BOOT_MS 450
 #define QM_BEFORE_RESET_MS 450
 
-#define DRV_VERSION "6.3.6-rc1"
+#define DRV_VERSION "6.3.8-rc1"
 
 struct regulator;
 
@@ -73,7 +73,8 @@
 	spin_unlock_irqrestore(&qm35_hdl->lock, flags);
 }
 
-static inline int qm35_reset(struct qm35_ctx *qm35_hdl, int timeout_ms, bool run)
+static inline int qm35_reset(struct qm35_ctx *qm35_hdl, int timeout_ms,
+			     bool run)
 {
 	if (qm35_hdl->gpio_reset) {
 		qm35_set_state(qm35_hdl, QM35_CTRL_STATE_RESET);