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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>
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@ -22,6 +22,8 @@
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#include <linux/regmap.h>
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#include <linux/mfd/core.h>
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#include <linux/pm_runtime.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/mfd/ti_am335x_tscadc.h>
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#include <linux/input/ti_am335x_tsc.h>
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@ -90,20 +92,31 @@ static int ti_tscadc_probe(struct platform_device *pdev)
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struct resource *res;
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struct clk *clk;
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struct mfd_tscadc_board *pdata = pdev->dev.platform_data;
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struct device_node *node = pdev->dev.of_node;
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struct mfd_cell *cell;
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int err, ctrl;
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int clk_value, clock_rate;
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int tsc_wires, adc_channels = 0, total_channels;
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int tsc_wires = 0, adc_channels = 0, total_channels;
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if (!pdata) {
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if (!pdata && !pdev->dev.of_node) {
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dev_err(&pdev->dev, "Could not find platform data\n");
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return -EINVAL;
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}
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if (pdata->adc_init)
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adc_channels = pdata->adc_init->adc_channels;
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if (pdev->dev.platform_data) {
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if (pdata->tsc_init)
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tsc_wires = pdata->tsc_init->wires;
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if (pdata->adc_init)
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adc_channels = pdata->adc_init->adc_channels;
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} else {
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node = of_get_child_by_name(pdev->dev.of_node, "tsc");
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of_property_read_u32(node, "ti,wires", &tsc_wires);
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node = of_get_child_by_name(pdev->dev.of_node, "adc");
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of_property_read_u32(node, "ti,adc-channels", &adc_channels);
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}
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tsc_wires = pdata->tsc_init->wires;
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total_channels = tsc_wires + adc_channels;
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if (total_channels > 8) {
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@ -285,11 +298,18 @@ static const struct dev_pm_ops tscadc_pm_ops = {
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#define TSCADC_PM_OPS NULL
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#endif
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static const struct of_device_id ti_tscadc_dt_ids[] = {
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{ .compatible = "ti,am3359-tscadc", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, ti_tscadc_dt_ids);
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static struct platform_driver ti_tscadc_driver = {
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.driver = {
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.name = "ti_tscadc",
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.name = "ti_am3359-tscadc",
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.owner = THIS_MODULE,
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.pm = TSCADC_PM_OPS,
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.of_match_table = of_match_ptr(ti_tscadc_dt_ids),
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},
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.probe = ti_tscadc_probe,
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.remove = ti_tscadc_remove,
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