From: "Patil, Rachna" <rac...@ti.com>
Add DT support in the MFD core driver. The node name is "am3359" because
it was tested on this platform.
Signed-off-by: Pantelis Antoniou <pa...@antoniou-consulting.com>
Signed-off-by: Patil, Rachna <rac...@ti.com>
Signed-off-by: Felipe Balbi <ba...@ti.com>
Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de>
---
drivers/mfd/ti_am335x_tscadc.c | 32 ++++++++++++++++++++++++++------
1 file changed, 26 insertions(+), 6 deletions(-)
diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c
index 1d6c740..292d34e 100644
--- a/drivers/mfd/ti_am335x_tscadc.c
+++ b/drivers/mfd/ti_am335x_tscadc.c
@@ -22,6 +22,8 @@
#include <linux/regmap.h>
#include <linux/mfd/core.h>
#include <linux/pm_runtime.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/mfd/ti_am335x_tscadc.h>
#include <linux/input/ti_am335x_tsc.h>
@@ -90,20 +92,31 @@ static int ti_tscadc_probe(struct platform_device
*pdev)
struct resource *res;
struct clk *clk;
struct mfd_tscadc_board *pdata = pdev->dev.platform_data;
+ struct device_node *node = pdev->dev.of_node;
struct mfd_cell *cell;
int err, ctrl;
int clk_value, clock_rate;
- int tsc_wires, adc_channels = 0, total_channels;
+ int tsc_wires = 0, adc_channels = 0, total_channels;
- if (!pdata) {
+ if (!pdata && !pdev->dev.of_node) {
dev_err(&pdev->dev, "Could not find platform data\n");
return -EINVAL;
}
- if (pdata->adc_init)
- adc_channels = pdata->adc_init->adc_channels;
+ if (pdev->dev.platform_data) {
+ if (pdata->tsc_init)
+ tsc_wires = pdata->tsc_init->wires;
+
+ if (pdata->adc_init)
+ adc_channels = pdata->adc_init->adc_channels;
+ } else {
+ node = of_get_child_by_name(pdev->dev.of_node, "tsc");
+ of_property_read_u32(node, "ti,wires", &tsc_wires);
+
+ node = of_get_child_by_name(pdev->dev.of_node, "adc");
+ of_property_read_u32(node, "ti,adc-channels", &adc_channels);
+ }
- tsc_wires = pdata->tsc_init->wires;
total_channels = tsc_wires + adc_channels;
if (total_channels > 8) {
@@ -285,11 +298,18 @@ static const struct dev_pm_ops tscadc_pm_ops = {
#define TSCADC_PM_OPS NULL
#endif
+static const struct of_device_id ti_tscadc_dt_ids[] = {
+ { .compatible = "ti,am3359-tscadc", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ti_tscadc_dt_ids);
+
static struct platform_driver ti_tscadc_driver = {
.driver = {
- .name = "ti_tscadc",
+ .name = "ti_am3359-tscadc",
.owner = THIS_MODULE,
.pm = TSCADC_PM_OPS,
+ .of_match_table = of_match_ptr(ti_tscadc_dt_ids),
},
.probe = ti_tscadc_probe,
.remove = ti_tscadc_remove,
--
1.7.10.4
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