litmus-rt.git - The LITMUS^RT kernel.

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Diffstat (limited to 'tools/perf/scripts/python/syscall-counts-by-pid.py')

0 files changed, 0 insertions, 0 deletions

/* * GPIO Driver for Dialog DA9055 PMICs. * * Copyright(c) 2012 Dialog Semiconductor Ltd. * * Author: David Dajun Chen <dchen@diasemi.com> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * */ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/gpio.h> #include <linux/mfd/da9055/core.h> #include <linux/mfd/da9055/reg.h> #include <linux/mfd/da9055/pdata.h> #define DA9055_VDD_IO 0x0 #define DA9055_PUSH_PULL 0x3 #define DA9055_ACT_LOW 0x0 #define DA9055_GPI 0x1 #define DA9055_PORT_MASK 0x3 #define DA9055_PORT_SHIFT(offset) (4 * (offset % 2)) #define DA9055_INPUT DA9055_GPI #define DA9055_OUTPUT DA9055_PUSH_PULL #define DA9055_IRQ_GPI0 3 struct da9055_gpio { struct da9055 *da9055; struct gpio_chip gp; }; static inline struct da9055_gpio *to_da9055_gpio(struct gpio_chip *chip) { return container_of(chip, struct da9055_gpio, gp); } static int da9055_gpio_get(struct gpio_chip *gc, unsigned offset) { struct da9055_gpio *gpio = to_da9055_gpio(gc); int gpio_direction = 0; int ret; /* Get GPIO direction */ ret = da9055_reg_read(gpio->da9055, (offset >> 1) + DA9055_REG_GPIO0_1); if (ret < 0) return ret; gpio_direction = ret & (DA9055_PORT_MASK) << DA9055_PORT_SHIFT(offset); gpio_direction >>= DA9055_PORT_SHIFT(offset); switch (gpio_direction) { case DA9055_INPUT: ret = da9055_reg_read(gpio->da9055, DA9055_REG_STATUS_B); if (ret < 0) return ret; break; case DA9055_OUTPUT: ret = da9055_reg_read(gpio->da9055, DA9055_REG_GPIO_MODE0_2); if (ret < 0) return ret; } return ret & (1 << offset); } static void da9055_gpio_set(struct gpio_chip *gc, unsigned offset, int value) { struct da9055_gpio *gpio = to_da9055_gpio(gc); da9055_reg_update(gpio->da9055, DA9055_REG_GPIO_MODE0_2, 1 << offset, value << offset); } static int da9055_gpio_direction_input(struct gpio_chip *gc, unsigned offset) { struct da9055_gpio *gpio = to_da9055_gpio(gc); unsigned char reg_byte; reg_byte = (DA9055_ACT_LOW | DA9055_GPI) << DA9055_PORT_SHIFT(offset); return da9055_reg_update(gpio->da9055, (offset >> 1) + DA9055_REG_GPIO0_1, DA9055_PORT_MASK << DA9055_PORT_SHIFT(offset), reg_byte); } static int da9055_gpio_direction_output(struct gpio_chip *gc, unsigned offset, int value) { struct da9055_gpio *gpio = to_da9055_gpio(gc); unsigned char reg_byte; int ret; reg_byte = (DA9055_VDD_IO | DA9055_PUSH_PULL) << DA9055_PORT_SHIFT(offset); ret = da9055_reg_update(gpio->da9055, (offset >> 1) + DA9055_REG_GPIO0_1, DA9055_PORT_MASK << DA9055_PORT_SHIFT(offset), reg_byte); if (ret < 0) return ret; da9055_gpio_set(gc, offset, value); return 0; } static int da9055_gpio_to_irq(struct gpio_chip *gc, u32 offset) { struct da9055_gpio *gpio = to_da9055_gpio(gc); struct da9055 *da9055 = gpio->da9055; return regmap_irq_get_virq(da9055->irq_data, DA9055_IRQ_GPI0 + offset); } static struct gpio_chip reference_gp __devinitdata = { .label = "da9055-gpio", .owner = THIS_MODULE,


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