linux-kernel - [PATCH v5 08/13] iio: adc: axp20x_adc: Replace adc_en2 flag with adc_en2

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed,  6 Jul 2022 11:18:57 +0100
From:   Aidan MacDonald <aidanmacdonald.0x0@...il.com>
To:     jic23@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, wens@...e.org,
        lee.jones@...aro.org, sre@...nel.org, lgirdwood@...il.com,
        broonie@...nel.org
Cc:     lars@...afoo.de, andy.shevchenko@...il.com,
        linus.walleij@...aro.org, brgl@...ev.pl, michael@...le.cc,
        samuel@...lland.org, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-pm@...r.kernel.org,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>
Subject: [PATCH v5 08/13] iio: adc: axp20x_adc: Replace adc_en2 flag with adc_en2_mask field

The adc_en2 flag is essentially specific to axp20x-compatible devices
because it hardcodes register values. Replace it with a mask field
so the register value can be specified in device match data.

Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@...il.com>
---
 drivers/iio/adc/axp20x_adc.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
index ab25e6e1ff65..75bda94dbce1 100644
--- a/drivers/iio/adc/axp20x_adc.c
+++ b/drivers/iio/adc/axp20x_adc.c
@@ -623,9 +623,9 @@ struct axp_data {
 	int				num_channels;
 	struct iio_chan_spec const	*channels;
 	unsigned long			adc_en1_mask;
+	unsigned long			adc_en2_mask;
 	int				(*adc_rate)(struct axp20x_adc_iio *info,
 						    int rate);
-	bool				adc_en2;
 	struct iio_map			*maps;
 };
 
@@ -634,8 +634,8 @@ static const struct axp_data axp20x_data = {
 	.num_channels = ARRAY_SIZE(axp20x_adc_channels),
 	.channels = axp20x_adc_channels,
 	.adc_en1_mask = AXP20X_ADC_EN1_MASK,
+	.adc_en2_mask = AXP20X_ADC_EN2_MASK,
 	.adc_rate = axp20x_adc_rate,
-	.adc_en2 = true,
 	.maps = axp20x_maps,
 };
 
@@ -645,7 +645,6 @@ static const struct axp_data axp22x_data = {
 	.channels = axp22x_adc_channels,
 	.adc_en1_mask = AXP22X_ADC_EN1_MASK,
 	.adc_rate = axp22x_adc_rate,
-	.adc_en2 = false,
 	.maps = axp22x_maps,
 };
 
@@ -655,7 +654,6 @@ static const struct axp_data axp813_data = {
 	.channels = axp813_adc_channels,
 	.adc_en1_mask = AXP22X_ADC_EN1_MASK,
 	.adc_rate = axp813_adc_rate,
-	.adc_en2 = false,
 	.maps = axp22x_maps,
 };
 
@@ -713,10 +711,10 @@ static int axp20x_probe(struct platform_device *pdev)
 	/* Enable the ADCs on IP */
 	regmap_write(info->regmap, AXP20X_ADC_EN1, info->data->adc_en1_mask);
 
-	if (info->data->adc_en2)
-		/* Enable GPIO0/1 and internal temperature ADCs */
+	if (info->data->adc_en2_mask)
 		regmap_update_bits(info->regmap, AXP20X_ADC_EN2,
-				   AXP20X_ADC_EN2_MASK, AXP20X_ADC_EN2_MASK);
+				   info->data->adc_en2_mask,
+				   info->data->adc_en2_mask);
 
 	/* Configure ADCs rate */
 	info->data->adc_rate(info, 100);
@@ -741,7 +739,7 @@ static int axp20x_probe(struct platform_device *pdev)
 fail_map:
 	regmap_write(info->regmap, AXP20X_ADC_EN1, 0);
 
-	if (info->data->adc_en2)
+	if (info->data->adc_en2_mask)
 		regmap_write(info->regmap, AXP20X_ADC_EN2, 0);
 
 	return ret;
@@ -757,7 +755,7 @@ static int axp20x_remove(struct platform_device *pdev)
 
 	regmap_write(info->regmap, AXP20X_ADC_EN1, 0);
 
-	if (info->data->adc_en2)
+	if (info->data->adc_en2_mask)
 		regmap_write(info->regmap, AXP20X_ADC_EN2, 0);
 
 	return 0;
-- 
2.35.1