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Diffstat (limited to 'qemu/roms/u-boot/drivers/gpio/pca9698.c')
-rw-r--r--qemu/roms/u-boot/drivers/gpio/pca9698.c127
1 files changed, 0 insertions, 127 deletions
diff --git a/qemu/roms/u-boot/drivers/gpio/pca9698.c b/qemu/roms/u-boot/drivers/gpio/pca9698.c
deleted file mode 100644
index 3152bf6df..000000000
--- a/qemu/roms/u-boot/drivers/gpio/pca9698.c
+++ /dev/null
@@ -1,127 +0,0 @@
-/*
- * (C) Copyright 2011
- * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-/*
- * Driver for NXP's pca9698 40 bit I2C gpio expander
- */
-
-#include <common.h>
-#include <i2c.h>
-#include <asm/errno.h>
-#include <pca9698.h>
-
-/*
- * The pca9698 registers
- */
-
-#define PCA9698_REG_INPUT 0x00
-#define PCA9698_REG_OUTPUT 0x08
-#define PCA9698_REG_POLARITY 0x10
-#define PCA9698_REG_CONFIG 0x18
-
-#define PCA9698_BUFFER_SIZE 5
-#define PCA9698_GPIO_COUNT 40
-
-static int pca9698_read40(u8 addr, u8 offset, u8 *buffer)
-{
- u8 command = offset | 0x80; /* autoincrement */
-
- return i2c_read(addr, command, 1, buffer, PCA9698_BUFFER_SIZE);
-}
-
-static int pca9698_write40(u8 addr, u8 offset, u8 *buffer)
-{
- u8 command = offset | 0x80; /* autoincrement */
-
- return i2c_write(addr, command, 1, buffer, PCA9698_BUFFER_SIZE);
-}
-
-static void pca9698_set_bit(unsigned gpio, u8 *buffer, unsigned value)
-{
- unsigned byte = gpio / 8;
- unsigned bit = gpio % 8;
-
- if (value)
- buffer[byte] |= (1 << bit);
- else
- buffer[byte] &= ~(1 << bit);
-}
-
-int pca9698_request(unsigned gpio, const char *label)
-{
- if (gpio >= PCA9698_GPIO_COUNT)
- return -EINVAL;
-
- return 0;
-}
-
-void pca9698_free(unsigned gpio)
-{
-}
-
-int pca9698_direction_input(u8 addr, unsigned gpio)
-{
- u8 data[PCA9698_BUFFER_SIZE];
- int res;
-
- res = pca9698_read40(addr, PCA9698_REG_CONFIG, data);
- if (res)
- return res;
-
- pca9698_set_bit(gpio, data, 1);
-
- return pca9698_write40(addr, PCA9698_REG_CONFIG, data);
-}
-
-int pca9698_direction_output(u8 addr, unsigned gpio, int value)
-{
- u8 data[PCA9698_BUFFER_SIZE];
- int res;
-
- res = pca9698_set_value(addr, gpio, value);
- if (res)
- return res;
-
- res = pca9698_read40(addr, PCA9698_REG_CONFIG, data);
- if (res)
- return res;
-
- pca9698_set_bit(gpio, data, 0);
-
- return pca9698_write40(addr, PCA9698_REG_CONFIG, data);
-}
-
-int pca9698_get_value(u8 addr, unsigned gpio)
-{
- unsigned config_byte = gpio / 8;
- unsigned config_bit = gpio % 8;
- unsigned value;
- u8 data[PCA9698_BUFFER_SIZE];
- int res;
-
- res = pca9698_read40(addr, PCA9698_REG_INPUT, data);
- if (res)
- return -1;
-
- value = data[config_byte] & (1 << config_bit);
-
- return !!value;
-}
-
-int pca9698_set_value(u8 addr, unsigned gpio, int value)
-{
- u8 data[PCA9698_BUFFER_SIZE];
- int res;
-
- res = pca9698_read40(addr, PCA9698_REG_OUTPUT, data);
- if (res)
- return res;
-
- pca9698_set_bit(gpio, data, value);
-
- return pca9698_write40(addr, PCA9698_REG_OUTPUT, data);
-}