From: Pantelis Antoniou <panto@xxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Pantelis Antoniou <panto@xxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
drivers/iio/adc/ti_am335x_adc.c | 26 +++++++++++++++++---------
drivers/input/touchscreen/ti_am335x_tsc.c | 13 ++++++++++---
drivers/mfd/ti_am335x_tscadc.c | 1 +
3 files changed, 28 insertions(+), 12 deletions(-)
diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
index cceff09..72ffe89 100644
--- a/drivers/iio/adc/ti_am335x_adc.c
+++ b/drivers/iio/adc/ti_am335x_adc.c
@@ -25,7 +25,9 @@
#include <linux/of_device.h>
#include <linux/iio/machine.h>
#include <linux/iio/driver.h>
+#include <linux/regmap.h>
+#include <linux/io.h>
#include <linux/mfd/ti_am335x_tscadc.h>
struct tiadc_device {
@@ -37,13 +39,17 @@ struct tiadc_device {
static unsigned int tiadc_readl(struct tiadc_device *adc, unsigned int reg)
{
- return readl(adc->mfd_tscadc->tscadc_base + reg);
+ unsigned int val;
+
+ val = (unsigned int)-1;
+ regmap_read(adc->mfd_tscadc->regmap_tscadc, reg, &val);
+ return val;
}
static void tiadc_writel(struct tiadc_device *adc, unsigned int reg,
unsigned int val)
{
- writel(val, adc->mfd_tscadc->tscadc_base + reg);
+ regmap_write(adc->mfd_tscadc->regmap_tscadc, reg, val);
}
static void tiadc_step_config(struct tiadc_device *adc_dev)
@@ -76,22 +82,24 @@ static void tiadc_step_config(struct tiadc_device *adc_dev)
tiadc_writel(adc_dev, REG_SE, STPENB_STEPENB);
}
-static int tiadc_channel_init(struct iio_dev *indio_dev, int channels)
+static int tiadc_channel_init(struct iio_dev *indio_dev,
+ struct tiadc_device *adc_dev)
{
struct iio_chan_spec *chan_array;
struct iio_chan_spec *chan;
char *s;
int i, len, size, ret;
+ int channels = adc_dev->channels;
- size = indio_dev->num_channels * (sizeof(struct iio_chan_spec) + 6);
+ size = channels * (sizeof(struct iio_chan_spec) + 6);
chan_array = kzalloc(size, GFP_KERNEL);
if (chan_array == NULL)
return -ENOMEM;
/* buffer space is after the array */
- s = (char *)(chan_array + indio_dev->num_channels);
+ s = (char *)(chan_array + channels);
chan = chan_array;
- for (i = 0; i < indio_dev->num_channels; i++, chan++, s += len + 1) {
+ for (i = 0; i < channels; i++, chan++, s += len + 1) {
len = sprintf(s, "AIN%d", i);
@@ -107,8 +115,9 @@ static int tiadc_channel_init(struct iio_dev *indio_dev, int channels)
}
indio_dev->channels = chan_array;
+ indio_dev->num_channels = channels;
- size = (indio_dev->num_channels + 1) * sizeof(struct iio_map);
+ size = (channels + 1) * sizeof(struct iio_map);
adc_dev->map = kzalloc(size, GFP_KERNEL);
if (adc_dev->map == NULL) {
kfree(chan_array);
@@ -214,7 +223,7 @@ static int tiadc_probe(struct platform_device *pdev)
tiadc_step_config(adc_dev);
- err = tiadc_channel_init(indio_dev, adc_dev->channels);
+ err = tiadc_channel_init(indio_dev, adc_dev);
if (err < 0)
goto err_free_device;
@@ -223,7 +232,6 @@ static int tiadc_probe(struct platform_device *pdev)
goto err_free_channels;
platform_set_drvdata(pdev, indio_dev);
-
return 0;
err_free_channels:
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index b467196..0dbf3df 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -27,6 +27,7 @@
#include <linux/delay.h>
#include <linux/of.h>
#include <linux/of_device.h>
+#include <linux/regmap.h>
#include <linux/mfd/ti_am335x_tscadc.h>
@@ -65,13 +66,17 @@ struct titsc {
static unsigned int titsc_readl(struct titsc *ts, unsigned int reg)
{
- return readl(ts->mfd_tscadc->tscadc_base + reg);
+ unsigned int val;
+
+ val = (unsigned int)-1;
+ regmap_read(ts->mfd_tscadc->regmap_tscadc, reg, &val);
+ return val;
}
static void titsc_writel(struct titsc *tsc, unsigned int reg,
unsigned int val)
{
- writel(val, tsc->mfd_tscadc->tscadc_base + reg);
+ regmap_write(tsc->mfd_tscadc->regmap_tscadc, reg, val);
}
/*
@@ -484,8 +489,10 @@ static int titsc_probe(struct platform_device *pdev)
/* register to the input system */
err = input_register_device(input_dev);
- if (err)
+ if (err) {
+ dev_err(&pdev->dev, "Failed to register input device\n");
goto err_free_irq;
+ }
platform_set_drvdata(pdev, ts_dev);
return 0;
diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c
index bd127bd..a27401a 100644
--- a/drivers/mfd/ti_am335x_tscadc.c
+++ b/drivers/mfd/ti_am335x_tscadc.c
@@ -31,6 +31,7 @@ static unsigned int tscadc_readl(struct ti_tscadc_dev *tsadc, unsigned int reg)
{
unsigned int val;
+ val = (unsigned int)-1;
regmap_read(tsadc->regmap_tscadc, reg, &val);
return val;
}
--
1.7.10.4
--
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