Patch "iio: adc: meson-saradc: Meson8 and Meson8b do not have REG11 and REG13" has been added to the 4.14-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    iio: adc: meson-saradc: Meson8 and Meson8b do not have REG11 and REG13

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     iio-adc-meson-saradc-meson8-and-meson8b-do-not-have-reg11-and-reg13.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 96748823c483c6eed8321f78bd128dd33f09c55c Mon Sep 17 00:00:00 2001
From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Date: Tue, 31 Oct 2017 21:01:45 +0100
Subject: iio: adc: meson-saradc: Meson8 and Meson8b do not have REG11 and REG13

From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

commit 96748823c483c6eed8321f78bd128dd33f09c55c upstream.

The Meson GXBB and newer SoCs have a few more registers than the older
Meson8 and Meson8b SoCs.
Use a separate regmap config to limit the older SoCs to the DELTA_10
register.

Fixes: 6c76ed31cd05 ("iio: adc: meson-saradc: add Meson8b SoC compatibility")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/iio/adc/meson_saradc.c |   17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

--- a/drivers/iio/adc/meson_saradc.c
+++ b/drivers/iio/adc/meson_saradc.c
@@ -224,6 +224,7 @@ struct meson_sar_adc_data {
 	u32					bandgap_reg;
 	unsigned int				resolution;
 	const char				*name;
+	const struct regmap_config		*regmap_config;
 };
 
 struct meson_sar_adc_priv {
@@ -243,13 +244,20 @@ struct meson_sar_adc_priv {
 	int					calibscale;
 };
 
-static const struct regmap_config meson_sar_adc_regmap_config = {
+static const struct regmap_config meson_sar_adc_regmap_config_gxbb = {
 	.reg_bits = 8,
 	.val_bits = 32,
 	.reg_stride = 4,
 	.max_register = MESON_SAR_ADC_REG13,
 };
 
+static const struct regmap_config meson_sar_adc_regmap_config_meson8 = {
+	.reg_bits = 8,
+	.val_bits = 32,
+	.reg_stride = 4,
+	.max_register = MESON_SAR_ADC_DELTA_10,
+};
+
 static unsigned int meson_sar_adc_get_fifo_count(struct iio_dev *indio_dev)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
@@ -860,6 +868,7 @@ static const struct iio_info meson_sar_a
 static const struct meson_sar_adc_data meson_sar_adc_meson8_data = {
 	.has_bl30_integration = false,
 	.bandgap_reg = MESON_SAR_ADC_DELTA_10,
+	.regmap_config = &meson_sar_adc_regmap_config_meson8,
 	.resolution = 10,
 	.name = "meson-meson8-saradc",
 };
@@ -867,6 +876,7 @@ static const struct meson_sar_adc_data m
 static const struct meson_sar_adc_data meson_sar_adc_meson8b_data = {
 	.has_bl30_integration = false,
 	.bandgap_reg = MESON_SAR_ADC_DELTA_10,
+	.regmap_config = &meson_sar_adc_regmap_config_meson8,
 	.resolution = 10,
 	.name = "meson-meson8b-saradc",
 };
@@ -874,6 +884,7 @@ static const struct meson_sar_adc_data m
 static const struct meson_sar_adc_data meson_sar_adc_gxbb_data = {
 	.has_bl30_integration = true,
 	.bandgap_reg = MESON_SAR_ADC_REG11,
+	.regmap_config = &meson_sar_adc_regmap_config_gxbb,
 	.resolution = 10,
 	.name = "meson-gxbb-saradc",
 };
@@ -881,6 +892,7 @@ static const struct meson_sar_adc_data m
 static const struct meson_sar_adc_data meson_sar_adc_gxl_data = {
 	.has_bl30_integration = true,
 	.bandgap_reg = MESON_SAR_ADC_REG11,
+	.regmap_config = &meson_sar_adc_regmap_config_gxbb,
 	.resolution = 12,
 	.name = "meson-gxl-saradc",
 };
@@ -888,6 +900,7 @@ static const struct meson_sar_adc_data m
 static const struct meson_sar_adc_data meson_sar_adc_gxm_data = {
 	.has_bl30_integration = true,
 	.bandgap_reg = MESON_SAR_ADC_REG11,
+	.regmap_config = &meson_sar_adc_regmap_config_gxbb,
 	.resolution = 12,
 	.name = "meson-gxm-saradc",
 };
@@ -965,7 +978,7 @@ static int meson_sar_adc_probe(struct pl
 		return ret;
 
 	priv->regmap = devm_regmap_init_mmio(&pdev->dev, base,
-					     &meson_sar_adc_regmap_config);
+					     priv->data->regmap_config);
 	if (IS_ERR(priv->regmap))
 		return PTR_ERR(priv->regmap);
 


Patches currently in stable-queue which might be from martin.blumenstingl@googlemail.com are

queue-4.14/iio-adc-meson-saradc-initialize-the-bandgap-correctly-on-older-socs.patch
queue-4.14/iio-adc-meson-saradc-fix-the-bit_idx-of-the-adc_en-clock.patch
queue-4.14/iio-adc-meson-saradc-meson8-and-meson8b-do-not-have-reg11-and-reg13.patch