EVOLUTION-MANAGER

Edit File: sx150x.h

/* * Driver for the Semtech SX150x I2C GPIO Expanders * * Copyright (c) 2010, Code Aurora Forum. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #ifndef __LINUX_I2C_SX150X_H #define __LINUX_I2C_SX150X_H /** * struct sx150x_platform_data - config data for SX150x driver * @gpio_base: The index number of the first GPIO assigned to this * GPIO expander. The expander will create a block of * consecutively numbered gpios beginning at the given base, * with the size of the block depending on the model of the * expander chip. * @oscio_is_gpo: If set to true, the driver will configure OSCIO as a GPO * instead of as an oscillator, increasing the size of the * GP(I)O pool created by this expander by one. The * output-only GPO pin will be added at the end of the block. * @io_pullup_ena: A bit-mask which enables or disables the pull-up resistor * for each IO line in the expander. Setting the bit at * position n will enable the pull-up for the IO at * the corresponding offset. For chips with fewer than * 16 IO pins, high-end bits are ignored. * @io_pulldn_ena: A bit-mask which enables-or disables the pull-down * resistor for each IO line in the expander. Setting the * bit at position n will enable the pull-down for the IO at * the corresponding offset. For chips with fewer than * 16 IO pins, high-end bits are ignored. * @io_open_drain_ena: A bit-mask which enables-or disables open-drain * operation for each IO line in the expander. Setting the * bit at position n enables open-drain operation for * the IO at the corresponding offset. Clearing the bit * enables regular push-pull operation for that IO. * For chips with fewer than 16 IO pins, high-end bits * are ignored. * @io_polarity: A bit-mask which enables polarity inversion for each IO line * in the expander. Setting the bit at position n inverts * the polarity of that IO line, while clearing it results * in normal polarity. For chips with fewer than 16 IO pins, * high-end bits are ignored. * @irq_summary: The 'summary IRQ' line to which the GPIO expander's INT line * is connected, via which it reports interrupt events * across all GPIO lines. This must be a real, * pre-existing IRQ line. * Setting this value < 0 disables the irq_chip functionality * of the driver. * @irq_base: The first 'virtual IRQ' line at which our block of GPIO-based * IRQ lines will appear. Similarly to gpio_base, the expander * will create a block of irqs beginning at this number. * This value is ignored if irq_summary is < 0. * @reset_during_probe: If set to true, the driver will trigger a full * reset of the chip at the beginning of the probe * in order to place it in a known state. */ struct sx150x_platform_data { unsigned gpio_base; bool oscio_is_gpo; u16 io_pullup_ena; u16 io_pulldn_ena; u16 io_open_drain_ena; u16 io_polarity; int irq_summary; unsigned irq_base; bool reset_during_probe; }; #endif /* __LINUX_I2C_SX150X_H */