diff options
Diffstat (limited to 'drivers/misc/ti_dac7512.c')
-rw-r--r-- | drivers/misc/ti_dac7512.c | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/drivers/misc/ti_dac7512.c b/drivers/misc/ti_dac7512.c deleted file mode 100644 index f5456fb7d773..000000000000 --- a/drivers/misc/ti_dac7512.c +++ /dev/null @@ -1,103 +0,0 @@ -/* - * dac7512.c - Linux kernel module for - * Texas Instruments DAC7512 - * - * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> - * - * 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. - * - * 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., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/module.h> -#include <linux/spi/spi.h> -#include <linux/of.h> - -static ssize_t dac7512_store_val(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) -{ - struct spi_device *spi = to_spi_device(dev); - unsigned char tmp[2]; - unsigned long val; - int ret; - - ret = kstrtoul(buf, 10, &val); - if (ret) - return ret; - - tmp[0] = val >> 8; - tmp[1] = val & 0xff; - spi_write(spi, tmp, sizeof(tmp)); - return count; -} - -static DEVICE_ATTR(value, S_IWUSR, NULL, dac7512_store_val); - -static struct attribute *dac7512_attributes[] = { - &dev_attr_value.attr, - NULL -}; - -static const struct attribute_group dac7512_attr_group = { - .attrs = dac7512_attributes, -}; - -static int dac7512_probe(struct spi_device *spi) -{ - int ret; - - spi->bits_per_word = 8; - spi->mode = SPI_MODE_0; - ret = spi_setup(spi); - if (ret < 0) - return ret; - - return sysfs_create_group(&spi->dev.kobj, &dac7512_attr_group); -} - -static int dac7512_remove(struct spi_device *spi) -{ - sysfs_remove_group(&spi->dev.kobj, &dac7512_attr_group); - return 0; -} - -static const struct spi_device_id dac7512_id_table[] = { - { "dac7512", 0 }, - { } -}; -MODULE_DEVICE_TABLE(spi, dac7512_id_table); - -#ifdef CONFIG_OF -static const struct of_device_id dac7512_of_match[] = { - { .compatible = "ti,dac7512", }, - { } -}; -MODULE_DEVICE_TABLE(of, dac7512_of_match); -#endif - -static struct spi_driver dac7512_driver = { - .driver = { - .name = "dac7512", - .of_match_table = of_match_ptr(dac7512_of_match), - }, - .probe = dac7512_probe, - .remove = dac7512_remove, - .id_table = dac7512_id_table, -}; - -module_spi_driver(dac7512_driver); - -MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>"); -MODULE_DESCRIPTION("DAC7512 16-bit DAC"); -MODULE_LICENSE("GPL v2"); |