change wifi driver to cypress

hc

2024-01-05 071106ecf68c401173c58808b1cf5f68cc50d390

 kernel/drivers/iio/common/st_sensors/st_sensors_trigger.c
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..
@@ -1,11 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * STMicroelectronics sensors trigger library driver
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  *
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  * Copyright 2012-2013 STMicroelectronics Inc.
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  *
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  * Denis Ciocca <denis.ciocca@st.com>
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- *
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- * Licensed under the GPL-2.
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  */
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 #include <linux/kernel.h>
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@@ -14,43 +13,41 @@
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 #include <linux/iio/iio.h>
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 #include <linux/iio/trigger.h>
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 #include <linux/interrupt.h>
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+#include <linux/regmap.h>
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 #include <linux/iio/common/st_sensors.h>
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 #include "st_sensors_core.h"
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19
 
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 /**
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  * st_sensors_new_samples_available() - check if more samples came in
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+ * @indio_dev: IIO device reference.
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+ * @sdata: Sensor data.
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+ *
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  * returns:
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- * 0 - no new samples available
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- * 1 - new samples available
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- * negative - error or unknown
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+ * false - no new samples available or read error
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+ * true - new samples available
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  */
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-static int st_sensors_new_samples_available(struct iio_dev *indio_dev,
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-					    struct st_sensor_data *sdata)
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+static bool st_sensors_new_samples_available(struct iio_dev *indio_dev,
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+					     struct st_sensor_data *sdata)
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 {
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-	u8 status;
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-	int ret;
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+	int ret, status;
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 	/* How would I know if I can't check it? */
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 	if (!sdata->sensor_settings->drdy_irq.stat_drdy.addr)
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-		return -EINVAL;
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+		return true;
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 	/* No scan mask, no interrupt */
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 	if (!indio_dev->active_scan_mask)
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-		return 0;
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+		return false;
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-	ret = sdata->tf->read_byte(&sdata->tb, sdata->dev,
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-			sdata->sensor_settings->drdy_irq.stat_drdy.addr,
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-			&status);
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+	ret = regmap_read(sdata->regmap,
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+			  sdata->sensor_settings->drdy_irq.stat_drdy.addr,
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+			  &status);
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 	if (ret < 0) {
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-		dev_err(sdata->dev,
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-			"error checking samples available\n");
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-		return ret;
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+		dev_err(sdata->dev, "error checking samples available\n");
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+		return false;
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 	}
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-	if (status & sdata->sensor_settings->drdy_irq.stat_drdy.mask)
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-		return 1;
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-
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-	return 0;
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+	return !!(status & sdata->sensor_settings->drdy_irq.stat_drdy.mask);
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 }
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52
 
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 /**
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@@ -104,7 +101,7 @@
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 		return IRQ_HANDLED;
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102
 
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 	/*
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-	 * If we are using egde IRQs, new samples arrived while processing
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+	 * If we are using edge IRQs, new samples arrived while processing
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 	 * the IRQ and those may be missed unless we pick them here, so poll
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 	 * again. If the sensor delivery frequency is very high, this thread
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 	 * turns into a polled loop handler.
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@@ -122,9 +119,9 @@
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 int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
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 				const struct iio_trigger_ops *trigger_ops)
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 {
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-	int err, irq;
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 	struct st_sensor_data *sdata = iio_priv(indio_dev);
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 	unsigned long irq_trig;
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+	int err;
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125
 
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 	sdata->trig = iio_trigger_alloc("%s-trigger", indio_dev->name);
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 	if (sdata->trig == NULL) {
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@@ -136,8 +133,7 @@
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 	sdata->trig->ops = trigger_ops;
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 	sdata->trig->dev.parent = sdata->dev;
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135
 
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-	irq = sdata->get_irq_data_ready(indio_dev);
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-	irq_trig = irqd_get_trigger_type(irq_get_irq_data(irq));
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+	irq_trig = irqd_get_trigger_type(irq_get_irq_data(sdata->irq));
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 	/*
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 	 * If the IRQ is triggered on falling edge, we need to mark the
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 	 * interrupt as active low, if the hardware supports this.
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@@ -147,9 +143,7 @@
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 	case IRQF_TRIGGER_LOW:
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 		if (!sdata->sensor_settings->drdy_irq.addr_ihl) {
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 			dev_err(&indio_dev->dev,
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-				"falling/low specified for IRQ "
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-				"but hardware only support rising/high: "
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-				"will request rising/high\n");
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+				"falling/low specified for IRQ but hardware supports only rising/high: will request rising/high\n");
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 			if (irq_trig == IRQF_TRIGGER_FALLING)
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 				irq_trig = IRQF_TRIGGER_RISING;
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 			if (irq_trig == IRQF_TRIGGER_LOW)
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@@ -162,8 +156,7 @@
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 			if (err < 0)
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 				goto iio_trigger_free;
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 			dev_info(&indio_dev->dev,
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-				 "interrupts on the falling edge or "
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-				 "active low level\n");
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+				 "interrupts on the falling edge or active low level\n");
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 		}
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 		break;
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 	case IRQF_TRIGGER_RISING:
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@@ -177,16 +170,21 @@
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 	default:
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 		/* This is the most preferred mode, if possible */
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 		dev_err(&indio_dev->dev,
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-			"unsupported IRQ trigger specified (%lx), enforce "
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-			"rising edge\n", irq_trig);
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+			"unsupported IRQ trigger specified (%lx), enforce rising edge\n", irq_trig);
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 		irq_trig = IRQF_TRIGGER_RISING;
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 	}
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 	/* Tell the interrupt handler that we're dealing with edges */
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 	if (irq_trig == IRQF_TRIGGER_FALLING ||
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-	    irq_trig == IRQF_TRIGGER_RISING)
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+	    irq_trig == IRQF_TRIGGER_RISING) {
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+		if (!sdata->sensor_settings->drdy_irq.stat_drdy.addr) {
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+			dev_err(&indio_dev->dev,
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+				"edge IRQ not supported w/o stat register.\n");
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+			err = -EOPNOTSUPP;
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+			goto iio_trigger_free;
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+		}
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 		sdata->edge_irq = true;
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-	else
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+	} else {
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 		/*
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 		 * If we're not using edges (i.e. level interrupts) we
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 		 * just mask off the IRQ, handle one interrupt, then
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@@ -194,6 +192,7 @@
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 		 * interrupt handler top half again and start over.
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 		 */
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 		irq_trig |= IRQF_ONESHOT;
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+	}
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 	/*
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 	 * If the interrupt pin is Open Drain, by definition this
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@@ -207,12 +206,12 @@
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 	    sdata->sensor_settings->drdy_irq.stat_drdy.addr)
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 		irq_trig |= IRQF_SHARED;
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-	err = request_threaded_irq(sdata->get_irq_data_ready(indio_dev),
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-			st_sensors_irq_handler,
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-			st_sensors_irq_thread,
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-			irq_trig,
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-			sdata->trig->name,
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-			sdata->trig);
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+	err = request_threaded_irq(sdata->irq,
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+				   st_sensors_irq_handler,
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+				   st_sensors_irq_thread,
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+				   irq_trig,
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+				   sdata->trig->name,
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+				   sdata->trig);
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 	if (err) {
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 		dev_err(&indio_dev->dev, "failed to request trigger IRQ.\n");
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 		goto iio_trigger_free;
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@@ -228,7 +227,7 @@
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 	return 0;
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 iio_trigger_register_error:
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-	free_irq(sdata->get_irq_data_ready(indio_dev), sdata->trig);
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+	free_irq(sdata->irq, sdata->trig);
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 iio_trigger_free:
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 	iio_trigger_free(sdata->trig);
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 	return err;
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@@ -240,7 +239,7 @@
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 	struct st_sensor_data *sdata = iio_priv(indio_dev);
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 	iio_trigger_unregister(sdata->trig);
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-	free_irq(sdata->get_irq_data_ready(indio_dev), sdata->trig);
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+	free_irq(sdata->irq, sdata->trig);
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 	iio_trigger_free(sdata->trig);
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 }
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 EXPORT_SYMBOL(st_sensors_deallocate_trigger);