linux-imx
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committed ba74bd5d5b5x
struct twl6040 *twl6040 = dev_get_drvdata(chip->parent->parent); int ret = 0; ret = twl6040_reg_read(twl6040, TWL6040_REG_GPOCTL); if (ret < 0) return ret; return !!(ret & BIT(offset));}static int twl6040gpo_get_direction(struct gpio_chip *chip, unsigned offset){ /* This means "out" */ return 0;}static int twl6040gpo_direction_out(struct gpio_chip *chip, unsigned offset, int value){ /* This only drives GPOs, and can't change direction */ return 0;}static void twl6040gpo_set(struct gpio_chip *chip, unsigned offset, int value){ struct twl6040 *twl6040 = dev_get_drvdata(chip->parent->parent); gpoctl = ret & ~BIT(offset); twl6040_reg_write(twl6040, TWL6040_REG_GPOCTL, gpoctl);}static struct gpio_chip twl6040gpo_chip = { .label = "twl6040", .owner = THIS_MODULE, .get = twl6040gpo_get, .direction_output = twl6040gpo_direction_out, .get_direction = twl6040gpo_get_direction, .set = twl6040gpo_set, .can_sleep = true,};/*----------------------------------------------------------------------*/static int gpo_twl6040_probe(struct platform_device *pdev){ struct device *twl6040_core_dev = pdev->dev.parent; struct twl6040 *twl6040 = dev_get_drvdata(twl6040_core_dev);