uboot-phytec
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committed 9638879cba9// SPDX-License-Identifier: GPL-2.0+/* * (C) Copyright 2017 * Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc *//* Sequence number of I2C bus that holds the GPIO expanders */static const int I2C_BUS_SEQ_NO = 1;/* I2C address of SC/MC2 expander */static const int MC2_EXPANDER_ADDR = 0x20;/* I2C address of MC4 expander */static const int MC4_EXPANDER_ADDR = 0x22;/* Number of the GPIO to read the SC data from */static const int SC_GPIO_NO;/* Number of the GPIO to read the CON data from */static const int CON_GPIO_NO = 1;/** * struct board_gazerbeam_priv - Private data structure for the gazerbeam board * driver. * @reset_gpios: GPIOs for the board's reset GPIOs. * @var_gpios: GPIOs for the board's hardware variant GPIOs * @ver_gpios: GPIOs for the board's hardware version GPIOs * @variant: Container for the board's hardware variant (CON/CPU) * @multichannel: Container for the board's multichannel variant (MC4/MC2/SC) * @hwversion: Container for the board's hardware version */struct board_gazerbeam_priv { struct gpio_desc reset_gpios[2]; struct gpio_desc var_gpios[2]; struct gpio_desc ver_gpios[4]; int variant; int multichannel; int hwversion;};/** * _read_board_variant_data() - Read variant information from the hardware. * @dev: The board device for which to determine the multichannel and device * type information. * * The data read from the board's hardware (mostly hard-wired GPIOs) is stored * in the private data structure of the driver to be used by other driver * methods. * * Return: 0 if OK, -ve on error. */static int _read_board_variant_data(struct udevice *dev){ struct board_gazerbeam_priv *priv = dev_get_priv(dev); struct udevice *i2c_bus; struct udevice *dummy; char *listname;