From: "Patil, Rachna" <rac...@ti.com> Make changes to add DT support in the MFD core driver.
Signed-off-by: Patil, Rachna <rac...@ti.com> --- drivers/mfd/ti_am335x_tscadc.c | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c index e9f3fb5..4c01056 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> @@ -64,20 +66,31 @@ 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_find_node_by_name(pdev->dev.of_node, "tsc"); + of_property_read_u32(node, "wires", &tsc_wires); + + node = of_find_node_by_name(pdev->dev.of_node, "adc"); + of_property_read_u32(node, "adc-channels", &adc_channels); + } - tsc_wires = pdata->tsc_init->wires; total_channels = tsc_wires + adc_channels; if (total_channels > 8) { @@ -256,11 +269,16 @@ 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,ti-tscadc", }, +}; + static struct platform_driver ti_tscadc_driver = { .driver = { .name = "ti_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, -- 1.7.9.5 _______________________________________________ devicetree-discuss mailing list devicetree-discuss@lists.ozlabs.org https://lists.ozlabs.org/listinfo/devicetree-discuss