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Groups > linux.kernel > #1372189

[PATCH 2/9] iio: adc: qcom-spmi-iadc: use regmap to retrieve struct device

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Driver includes struct regmap and struct device in its global data.
Remove the struct device and use regmap API to retrieve device info.

Patch created using Coccinelle plus manual edits.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
---
 drivers/iio/adc/qcom-spmi-iadc.c | 32 +++++++++++++++++---------------
 1 file changed, 17 insertions(+), 15 deletions(-)

diff --git a/drivers/iio/adc/qcom-spmi-iadc.c b/drivers/iio/adc/qcom-spmi-iadc.c
index fabd24e..f69a057 100644
--- a/drivers/iio/adc/qcom-spmi-iadc.c
+++ b/drivers/iio/adc/qcom-spmi-iadc.c
@@ -102,7 +102,6 @@
 /**
  * struct iadc_chip - IADC Current ADC device structure.
  * @regmap: regmap for register read/write.
- * @dev: This device pointer.
  * @base: base offset for the ADC peripheral.
  * @rsense: Values of the internal and external sense resister in micro Ohms.
  * @poll_eoc: Poll for end of conversion instead of waiting for IRQ.
@@ -113,7 +112,6 @@
  */
 struct iadc_chip {
 	struct regmap	*regmap;
-	struct device	*dev;
 	u16		base;
 	bool		poll_eoc;
 	u32		rsense[2];
@@ -170,6 +168,7 @@ static int iadc_set_state(struct iadc_chip *iadc, bool state)
 
 static void iadc_status_show(struct iadc_chip *iadc)
 {
+	struct device *dev = regmap_get_device(iadc->regmap);
 	u8 mode, sta1, chan, dig, en, req;
 	int ret;
 
@@ -197,7 +196,7 @@ static void iadc_status_show(struct iadc_chip *iadc)
 	if (ret < 0)
 		return;
 
-	dev_err(iadc->dev,
+	dev_err(dev,
 		"mode:%02x en:%02x chan:%02x dig:%02x req:%02x sta1:%02x\n",
 		mode, en, chan, dig, req, sta1);
 }
@@ -284,6 +283,7 @@ static int iadc_read_result(struct iadc_chip *iadc, u16 *data)
 
 static int iadc_do_conversion(struct iadc_chip *iadc, int chan, u16 *data)
 {
+	struct device *dev = regmap_get_device(iadc->regmap);
 	unsigned int wait;
 	int ret;
 
@@ -310,7 +310,7 @@ static int iadc_do_conversion(struct iadc_chip *iadc, int chan, u16 *data)
 exit:
 	iadc_set_state(iadc, false);
 	if (ret < 0)
-		dev_err(iadc->dev, "conversion failed\n");
+		dev_err(dev, "conversion failed\n");
 
 	return ret;
 }
@@ -320,6 +320,7 @@ static int iadc_read_raw(struct iio_dev *indio_dev,
 			 int *val, int *val2, long mask)
 {
 	struct iadc_chip *iadc = iio_priv(indio_dev);
+	struct device *dev = regmap_get_device(iadc->regmap);
 	s32 isense_ua, vsense_uv;
 	u16 adc_raw, vsense_raw;
 	int ret;
@@ -339,7 +340,7 @@ static int iadc_read_raw(struct iio_dev *indio_dev,
 
 		isense_ua = vsense_uv / iadc->rsense[chan->channel];
 
-		dev_dbg(iadc->dev, "off %d gain %d adc %d %duV I %duA\n",
+		dev_dbg(dev, "off %d gain %d adc %d %duV I %duA\n",
 			iadc->offset[chan->channel], iadc->gain,
 			adc_raw, vsense_uv, isense_ua);
 
@@ -370,6 +371,7 @@ static irqreturn_t iadc_isr(int irq, void *dev_id)
 
 static int iadc_update_offset(struct iadc_chip *iadc)
 {
+	struct device *dev = regmap_get_device(iadc->regmap);
 	int ret;
 
 	ret = iadc_do_conversion(iadc, IADC_GAIN_17P857MV, &iadc->gain);
@@ -382,7 +384,7 @@ static int iadc_update_offset(struct iadc_chip *iadc)
 		return ret;
 
 	if (iadc->gain == iadc->offset[IADC_INT_RSENSE]) {
-		dev_err(iadc->dev, "error: internal offset == gain %d\n",
+		dev_err(dev, "error: internal offset == gain %d\n",
 			iadc->gain);
 		return -EINVAL;
 	}
@@ -393,8 +395,7 @@ static int iadc_update_offset(struct iadc_chip *iadc)
 		return ret;
 
 	if (iadc->gain == iadc->offset[IADC_EXT_RSENSE]) {
-		dev_err(iadc->dev, "error: external offset == gain %d\n",
-			iadc->gain);
+		dev_err(dev, "error: external offset == gain %d\n", iadc->gain);
 		return -EINVAL;
 	}
 
@@ -403,6 +404,7 @@ static int iadc_update_offset(struct iadc_chip *iadc)
 
 static int iadc_version_check(struct iadc_chip *iadc)
 {
+	struct device *dev = regmap_get_device(iadc->regmap);
 	u8 val;
 	int ret;
 
@@ -411,7 +413,7 @@ static int iadc_version_check(struct iadc_chip *iadc)
 		return ret;
 
 	if (val < IADC_PERPH_TYPE_ADC) {
-		dev_err(iadc->dev, "%d is not ADC\n", val);
+		dev_err(dev, "%d is not ADC\n", val);
 		return -EINVAL;
 	}
 
@@ -420,7 +422,7 @@ static int iadc_version_check(struct iadc_chip *iadc)
 		return ret;
 
 	if (val < IADC_PERPH_SUBTYPE_IADC) {
-		dev_err(iadc->dev, "%d is not IADC\n", val);
+		dev_err(dev, "%d is not IADC\n", val);
 		return -EINVAL;
 	}
 
@@ -429,7 +431,7 @@ static int iadc_version_check(struct iadc_chip *iadc)
 		return ret;
 
 	if (val < IADC_REVISION2_SUPPORTED_IADC) {
-		dev_err(iadc->dev, "revision %d not supported\n", val);
+		dev_err(dev, "revision %d not supported\n", val);
 		return -EINVAL;
 	}
 
@@ -438,6 +440,7 @@ static int iadc_version_check(struct iadc_chip *iadc)
 
 static int iadc_rsense_read(struct iadc_chip *iadc, struct device_node *node)
 {
+	struct device *dev = regmap_get_device(iadc->regmap);
 	int ret, sign, int_sense;
 	u8 deviation;
 
@@ -447,7 +450,7 @@ static int iadc_rsense_read(struct iadc_chip *iadc, struct device_node *node)
 		iadc->rsense[IADC_EXT_RSENSE] = IADC_INT_RSENSE_IDEAL_VALUE;
 
 	if (!iadc->rsense[IADC_EXT_RSENSE]) {
-		dev_err(iadc->dev, "external resistor can't be zero Ohms");
+		dev_err(dev, "external resistor can't be zero Ohms");
 		return -EINVAL;
 	}
 
@@ -505,7 +508,6 @@ static int iadc_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	iadc = iio_priv(indio_dev);
-	iadc->dev = dev;
 
 	iadc->regmap = dev_get_regmap(dev->parent, NULL);
 	if (!iadc->regmap)
@@ -528,7 +530,7 @@ static int iadc_probe(struct platform_device *pdev)
 	if (ret < 0)
 		return -ENODEV;
 
-	dev_dbg(iadc->dev, "sense resistors %d and %d micro Ohm\n",
+	dev_dbg(&pdev->dev, "sense resistors %d and %d micro Ohm\n",
 		iadc->rsense[IADC_INT_RSENSE],
 		iadc->rsense[IADC_EXT_RSENSE]);
 
@@ -553,7 +555,7 @@ static int iadc_probe(struct platform_device *pdev)
 		else
 			return ret;
 	} else {
-		device_init_wakeup(iadc->dev, 1);
+		device_init_wakeup(&pdev->dev, 1);
 	}
 
 	ret = iadc_update_offset(iadc);
-- 
2.1.4

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[PATCH 2/9] iio: adc: qcom-spmi-iadc: use regmap to retrieve struct  device Alison Schofield <amsfield22@gmail.com> - 2016-04-06 07:20 +0200
  Re: [PATCH 2/9] iio: adc: qcom-spmi-iadc: use regmap to retrieve  struct device Jonathan Cameron <jic23@kernel.org> - 2016-04-10 16:00 +0200

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