[PATCH 08/22] iio/ti_am335x_adc: Add DT support
From: Sebastian Andrzej Siewior <hidden>
Date: 2013-06-05 16:24:41
Also in:
linux-iio
Subsystem:
iio subsystem and drivers, the rest · Maintainers:
Jonathan Cameron, Linus Torvalds
Possibly related (same subject, not in this thread)
- 2013-06-11 · [PATCH 08/22] iio/ti_am335x_adc: Add DT support · Sebastian Andrzej Siewior <bigeasy@linutronix.de>
From: "Patil, Rachna" <redacted>
Add DT support for client ADC driver.
[ panto-wVdstyuyKrO8r51toPun2/C9HSW9iNxf@public.gmane.org : use of_get_child_by_name
instead of of_find_node_by_name ]
Acked-by: Jonathan Cameron <redacted>
Signed-off-by: Pantelis Antoniou <panto-wVdstyuyKrO8r51toPun2/C9HSW9iNxf@public.gmane.org>
Signed-off-by: Patil, Rachna <redacted>
Signed-off-by: Felipe Balbi <redacted>
[bigeasy: shift the code to the left, fix clean up on
of_get_child_by_name() failer]
Signed-off-by: Sebastian Andrzej Siewior <redacted>
---
drivers/iio/adc/ti_am335x_adc.c | 25 +++++++++++++++++++++----
1 file changed, 21 insertions(+), 4 deletions(-)
diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
index 543b9c4..95bcd56 100644
--- a/drivers/iio/adc/ti_am335x_adc.c
+++ b/drivers/iio/adc/ti_am335x_adc.c@@ -22,6 +22,8 @@ #include <linux/platform_device.h> #include <linux/io.h> #include <linux/iio/iio.h> +#include <linux/of.h> +#include <linux/of_device.h> #include <linux/mfd/ti_am335x_tscadc.h> #include <linux/platform_data/ti_am335x_adc.h>
@@ -152,11 +154,12 @@ static int tiadc_probe(struct platform_device *pdev) struct iio_dev *indio_dev; struct tiadc_device *adc_dev; struct ti_tscadc_dev *tscadc_dev = ti_tscadc_dev_get(pdev); - struct mfd_tscadc_board *pdata; + struct mfd_tscadc_board *pdata = tscadc_dev->dev->platform_data; + struct device_node *node = tscadc_dev->dev->of_node; int err; + u32 val32; - pdata = tscadc_dev->dev->platform_data; - if (!pdata || !pdata->adc_init) { + if (!pdata && !node) { dev_err(&pdev->dev, "Could not find platform data\n"); return -EINVAL; }
@@ -170,7 +173,21 @@ static int tiadc_probe(struct platform_device *pdev) adc_dev = iio_priv(indio_dev); adc_dev->mfd_tscadc = tscadc_dev; - adc_dev->channels = pdata->adc_init->adc_channels; + + if (pdata) + adc_dev->channels = pdata->adc_init->adc_channels; + else { + node = of_get_child_by_name(node, "adc"); + if (!node) { + err = -EINVAL; + goto err_free_device; + } + err = of_property_read_u32(node, + "ti,adc-channels", &val32); + if (err < 0) + goto err_free_device; + adc_dev->channels = val32; + } indio_dev->dev.parent = &pdev->dev; indio_dev->name = dev_name(&pdev->dev);
--
1.7.10.4