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mfd: ti_am335x_tscadc: Add DT support 

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 <panto@antoniou-consulting.com>
Signed-off-by: Patil, Rachna <rachna@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
hifive-unleashed-5.1
Patil, Rachna 2013-01-24 03:45:09 +00:00 committed by Sebastian Andrzej Siewior
parent 0ead4fb22a
commit a6543a1cb5
1 changed files with 26 additions and 6 deletions
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32
drivers/mfd/ti_am335x_tscadc.c
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@ -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,