max8925_power: Add support for device-tree initialization
This patch adds support for initializing platform data from the device-tree description. Signed-off-by: Qing Xu <qingx@marvell.com> Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
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@ -12,6 +12,7 @@
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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@ -426,6 +427,54 @@ static __devexit int max8925_deinit_charger(struct max8925_power_info *info)
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return 0;
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}
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#ifdef CONFIG_OF
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static struct max8925_power_pdata *
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max8925_power_dt_init(struct platform_device *pdev)
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{
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struct device_node *nproot = pdev->dev.parent->of_node;
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struct device_node *np;
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int batt_detect;
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int topoff_threshold;
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int fast_charge;
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int no_temp_support;
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int no_insert_detect;
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struct max8925_power_pdata *pdata;
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if (!nproot)
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return pdev->dev.platform_data;
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np = of_find_node_by_name(nproot, "charger");
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if (!np) {
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dev_err(&pdev->dev, "failed to find charger node\n");
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return NULL;
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}
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pdata = devm_kzalloc(&pdev->dev,
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sizeof(struct max8925_power_pdata),
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GFP_KERNEL);
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of_property_read_u32(np, "topoff-threshold", &topoff_threshold);
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of_property_read_u32(np, "batt-detect", &batt_detect);
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of_property_read_u32(np, "fast-charge", &fast_charge);
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of_property_read_u32(np, "no-insert-detect", &no_insert_detect);
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of_property_read_u32(np, "no-temp-support", &no_temp_support);
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pdata->batt_detect = batt_detect;
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pdata->fast_charge = fast_charge;
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pdata->topoff_threshold = topoff_threshold;
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pdata->no_insert_detect = no_insert_detect;
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pdata->no_temp_support = no_temp_support;
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return pdata;
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}
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#else
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static struct max8925_power_pdata *
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max8925_power_dt_init(struct platform_device *pdev)
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{
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return pdev->dev.platform_data;
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}
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#endif
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static __devinit int max8925_power_probe(struct platform_device *pdev)
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{
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struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
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@ -433,7 +482,7 @@ static __devinit int max8925_power_probe(struct platform_device *pdev)
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struct max8925_power_info *info;
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int ret;
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pdata = pdev->dev.platform_data;
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pdata = max8925_power_dt_init(pdev);
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if (!pdata) {
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dev_err(&pdev->dev, "platform data isn't assigned to "
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"power supply\n");
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