forked from luck/tmp_suning_uos_patched
gpio: tps65910: dt: process gpio specific device node info
Parse the gpio specific device node information locally. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
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@ -20,6 +20,7 @@
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#include <linux/i2c.h>
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#include <linux/platform_device.h>
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#include <linux/mfd/tps65910.h>
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#include <linux/of_device.h>
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struct tps65910_gpio {
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struct gpio_chip gpio_chip;
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@ -81,6 +82,37 @@ static int tps65910_gpio_input(struct gpio_chip *gc, unsigned offset)
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GPIO_CFG_MASK);
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}
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#ifdef CONFIG_OF
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static struct tps65910_board *tps65910_parse_dt_for_gpio(struct device *dev,
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struct tps65910 *tps65910, int chip_ngpio)
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{
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struct tps65910_board *tps65910_board = tps65910->of_plat_data;
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unsigned int prop_array[TPS6591X_MAX_NUM_GPIO];
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int ngpio = min(chip_ngpio, TPS6591X_MAX_NUM_GPIO);
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int ret;
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int idx;
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tps65910_board->gpio_base = -1;
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ret = of_property_read_u32_array(tps65910->dev->of_node,
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"ti,en-gpio-sleep", prop_array, ngpio);
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if (ret < 0) {
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dev_dbg(dev, "ti,en-gpio-sleep not specified\n");
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return tps65910_board;
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}
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for (idx = 0; idx < ngpio; idx++)
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tps65910_board->en_gpio_sleep[idx] = (prop_array[idx] != 0);
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return tps65910_board;
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}
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#else
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static struct tps65910_board *tps65910_parse_dt_for_gpio(struct device *dev,
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struct tps65910 *tps65910, int chip_ngpio)
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{
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return NULL;
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}
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#endif
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static int __devinit tps65910_gpio_probe(struct platform_device *pdev)
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{
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struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
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@ -122,6 +154,10 @@ static int __devinit tps65910_gpio_probe(struct platform_device *pdev)
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else
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tps65910_gpio->gpio_chip.base = -1;
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if (!pdata && tps65910->dev->of_node)
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pdata = tps65910_parse_dt_for_gpio(&pdev->dev, tps65910,
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tps65910_gpio->gpio_chip.ngpio);
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if (!pdata)
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goto skip_init;
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