Merge branch 'char-misc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
* 'char-misc-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: isl29020: Remove a redundant semi-colon from return statement BMP085: Remove redundant semi-colon from return statement drivers:misc: ti-st: DEBUG uart, baud rate mods drivers:misc: ti-st: flush UART upon fw failure drivers:misc: ti-st: protect registrations char_dev.c: fix up some whitespace errors s390: tape_class.h: remove kobj_map.h inclusion misc: ad525x_dpot: Add support for SPI module device table matching
This commit is contained in:
Linus Torvalds
commit
21a2cb565a
10 changed files with 126 additions and 126 deletions
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@ -1,7 +1,7 @@
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/*
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* Driver for the Analog Devices digital potentiometers (I2C bus)
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*
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* Copyright (C) 2010 Michael Hennerich, Analog Devices Inc.
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* Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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@ -11,7 +11,6 @@
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#include "ad525x_dpot.h"
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/* ------------------------------------------------------------------------- */
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/* I2C bus functions */
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static int write_d8(void *client, u8 val)
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{
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@ -60,18 +59,13 @@ static int __devinit ad_dpot_i2c_probe(struct i2c_client *client,
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.bops = &bops,
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};
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struct ad_dpot_id dpot_id = {
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.name = (char *) &id->name,
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.devid = id->driver_data,
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};
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if (!i2c_check_functionality(client->adapter,
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I2C_FUNC_SMBUS_WORD_DATA)) {
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dev_err(&client->dev, "SMBUS Word Data not Supported\n");
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return -EIO;
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}
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return ad_dpot_probe(&client->dev, &bdata, &dpot_id);
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return ad_dpot_probe(&client->dev, &bdata, id->driver_data, id->name);
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}
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static int __devexit ad_dpot_i2c_remove(struct i2c_client *client)
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@ -1,7 +1,7 @@
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/*
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* Driver for the Analog Devices digital potentiometers (SPI bus)
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*
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* Copyright (C) 2010 Michael Hennerich, Analog Devices Inc.
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* Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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@ -11,40 +11,6 @@
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#include "ad525x_dpot.h"
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static const struct ad_dpot_id ad_dpot_spi_devlist[] = {
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{.name = "ad5160", .devid = AD5160_ID},
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{.name = "ad5161", .devid = AD5161_ID},
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{.name = "ad5162", .devid = AD5162_ID},
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{.name = "ad5165", .devid = AD5165_ID},
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{.name = "ad5200", .devid = AD5200_ID},
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{.name = "ad5201", .devid = AD5201_ID},
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{.name = "ad5203", .devid = AD5203_ID},
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{.name = "ad5204", .devid = AD5204_ID},
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{.name = "ad5206", .devid = AD5206_ID},
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{.name = "ad5207", .devid = AD5207_ID},
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{.name = "ad5231", .devid = AD5231_ID},
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{.name = "ad5232", .devid = AD5232_ID},
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{.name = "ad5233", .devid = AD5233_ID},
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{.name = "ad5235", .devid = AD5235_ID},
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{.name = "ad5260", .devid = AD5260_ID},
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{.name = "ad5262", .devid = AD5262_ID},
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{.name = "ad5263", .devid = AD5263_ID},
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{.name = "ad5290", .devid = AD5290_ID},
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{.name = "ad5291", .devid = AD5291_ID},
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{.name = "ad5292", .devid = AD5292_ID},
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{.name = "ad5293", .devid = AD5293_ID},
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{.name = "ad7376", .devid = AD7376_ID},
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{.name = "ad8400", .devid = AD8400_ID},
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{.name = "ad8402", .devid = AD8402_ID},
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{.name = "ad8403", .devid = AD8403_ID},
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{.name = "adn2850", .devid = ADN2850_ID},
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{.name = "ad5270", .devid = AD5270_ID},
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{.name = "ad5271", .devid = AD5271_ID},
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{}
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};
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/* ------------------------------------------------------------------------- */
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/* SPI bus functions */
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static int write8(void *client, u8 val)
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{
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@ -109,36 +75,16 @@ static const struct ad_dpot_bus_ops bops = {
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.write_r8d8 = write16,
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.write_r8d16 = write24,
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};
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static const struct ad_dpot_id *dpot_match_id(const struct ad_dpot_id *id,
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char *name)
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{
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while (id->name && id->name[0]) {
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if (strcmp(name, id->name) == 0)
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return id;
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id++;
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}
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return NULL;
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}
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static int __devinit ad_dpot_spi_probe(struct spi_device *spi)
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{
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char *name = spi->dev.platform_data;
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const struct ad_dpot_id *dpot_id;
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struct ad_dpot_bus_data bdata = {
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.client = spi,
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.bops = &bops,
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};
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dpot_id = dpot_match_id(ad_dpot_spi_devlist, name);
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if (dpot_id == NULL) {
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dev_err(&spi->dev, "%s not in supported device list", name);
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return -ENODEV;
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}
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return ad_dpot_probe(&spi->dev, &bdata, dpot_id);
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return ad_dpot_probe(&spi->dev, &bdata,
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spi_get_device_id(spi)->driver_data,
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spi_get_device_id(spi)->name);
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}
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static int __devexit ad_dpot_spi_remove(struct spi_device *spi)
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@ -146,14 +92,47 @@ static int __devexit ad_dpot_spi_remove(struct spi_device *spi)
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return ad_dpot_remove(&spi->dev);
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}
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static const struct spi_device_id ad_dpot_spi_id[] = {
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{"ad5160", AD5160_ID},
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{"ad5161", AD5161_ID},
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{"ad5162", AD5162_ID},
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{"ad5165", AD5165_ID},
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{"ad5200", AD5200_ID},
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{"ad5201", AD5201_ID},
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{"ad5203", AD5203_ID},
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{"ad5204", AD5204_ID},
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{"ad5206", AD5206_ID},
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{"ad5207", AD5207_ID},
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{"ad5231", AD5231_ID},
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{"ad5232", AD5232_ID},
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{"ad5233", AD5233_ID},
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{"ad5235", AD5235_ID},
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{"ad5260", AD5260_ID},
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{"ad5262", AD5262_ID},
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{"ad5263", AD5263_ID},
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{"ad5290", AD5290_ID},
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{"ad5291", AD5291_ID},
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{"ad5292", AD5292_ID},
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{"ad5293", AD5293_ID},
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{"ad7376", AD7376_ID},
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{"ad8400", AD8400_ID},
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{"ad8402", AD8402_ID},
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{"ad8403", AD8403_ID},
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{"adn2850", ADN2850_ID},
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{"ad5270", AD5270_ID},
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{"ad5271", AD5271_ID},
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{}
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};
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MODULE_DEVICE_TABLE(spi, ad_dpot_spi_id);
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static struct spi_driver ad_dpot_spi_driver = {
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.driver = {
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.name = "ad_dpot",
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.bus = &spi_bus_type,
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.owner = THIS_MODULE,
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},
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.probe = ad_dpot_spi_probe,
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.remove = __devexit_p(ad_dpot_spi_remove),
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.id_table = ad_dpot_spi_id,
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};
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static int __init ad_dpot_spi_init(void)
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@ -64,7 +64,7 @@
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* Author: Chris Verges <chrisv@cyberswitching.com>
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*
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* derived from ad5252.c
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* Copyright (c) 2006 Michael Hennerich <hennerich@blackfin.uclinux.org>
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* Copyright (c) 2006-2011 Michael Hennerich <hennerich@blackfin.uclinux.org>
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*
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* Licensed under the GPL-2 or later.
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*/
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@ -76,8 +76,6 @@
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#include <linux/delay.h>
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#include <linux/slab.h>
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#define DRIVER_VERSION "0.2"
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#include "ad525x_dpot.h"
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/*
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@ -687,8 +685,9 @@ inline void ad_dpot_remove_files(struct device *dev,
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}
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}
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__devinit int ad_dpot_probe(struct device *dev,
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struct ad_dpot_bus_data *bdata, const struct ad_dpot_id *id)
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int __devinit ad_dpot_probe(struct device *dev,
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struct ad_dpot_bus_data *bdata, unsigned long devid,
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const char *name)
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{
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struct dpot_data *data;
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@ -704,13 +703,13 @@ __devinit int ad_dpot_probe(struct device *dev,
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mutex_init(&data->update_lock);
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data->bdata = *bdata;
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data->devid = id->devid;
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data->devid = devid;
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data->max_pos = 1 << DPOT_MAX_POS(data->devid);
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data->max_pos = 1 << DPOT_MAX_POS(devid);
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data->rdac_mask = data->max_pos - 1;
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data->feat = DPOT_FEAT(data->devid);
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data->uid = DPOT_UID(data->devid);
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data->wipers = DPOT_WIPERS(data->devid);
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data->feat = DPOT_FEAT(devid);
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data->uid = DPOT_UID(devid);
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data->wipers = DPOT_WIPERS(devid);
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for (i = DPOT_RDAC0; i < MAX_RDACS; i++)
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if (data->wipers & (1 << i)) {
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@ -731,7 +730,7 @@ __devinit int ad_dpot_probe(struct device *dev,
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}
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dev_info(dev, "%s %d-Position Digital Potentiometer registered\n",
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id->name, data->max_pos);
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name, data->max_pos);
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return 0;
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@ -745,7 +744,7 @@ exit_free:
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dev_set_drvdata(dev, NULL);
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exit:
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dev_err(dev, "failed to create client for %s ID 0x%lX\n",
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id->name, id->devid);
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name, devid);
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return err;
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}
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EXPORT_SYMBOL(ad_dpot_probe);
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@ -770,4 +769,3 @@ MODULE_AUTHOR("Chris Verges <chrisv@cyberswitching.com>, "
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"Michael Hennerich <hennerich@blackfin.uclinux.org>");
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MODULE_DESCRIPTION("Digital potentiometer driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRIVER_VERSION);
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@ -208,12 +208,8 @@ struct ad_dpot_bus_data {
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const struct ad_dpot_bus_ops *bops;
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};
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struct ad_dpot_id {
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char *name;
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unsigned long devid;
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};
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int ad_dpot_probe(struct device *dev, struct ad_dpot_bus_data *bdata, const struct ad_dpot_id *id);
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int ad_dpot_probe(struct device *dev, struct ad_dpot_bus_data *bdata,
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unsigned long devid, const char *name);
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int ad_dpot_remove(struct device *dev);
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#endif
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@ -216,7 +216,7 @@ static s32 bmp085_get_temperature(struct bmp085_data *data, int *temperature)
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*temperature = (x1+x2+8) >> 4;
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exit:
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return status;;
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return status;
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}
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/*
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@ -158,7 +158,7 @@ static int als_set_default_config(struct i2c_client *client)
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dev_err(&client->dev, "default write failed.");
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return retval;
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}
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return 0;;
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return 0;
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}
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static int isl29020_probe(struct i2c_client *client,
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@ -137,6 +137,8 @@ void st_send_frame(unsigned char chnl_id, struct st_data_s *st_gdata)
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* st_reg_complete -
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* to call registration complete callbacks
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* of all protocol stack drivers
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* This function is being called with spin lock held, protocol drivers are
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* only expected to complete their waits and do nothing more than that.
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*/
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void st_reg_complete(struct st_data_s *st_gdata, char err)
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{
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@ -538,11 +540,12 @@ long st_register(struct st_proto_s *new_proto)
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set_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state);
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st_recv = st_kim_recv;
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/* enable the ST LL - to set default chip state */
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st_ll_enable(st_gdata);
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/* release lock previously held - re-locked below */
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spin_unlock_irqrestore(&st_gdata->lock, flags);
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/* enable the ST LL - to set default chip state */
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st_ll_enable(st_gdata);
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/* this may take a while to complete
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* since it involves BT fw download
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*/
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@ -553,10 +556,13 @@ long st_register(struct st_proto_s *new_proto)
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(test_bit(ST_REG_PENDING, &st_gdata->st_state))) {
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pr_err(" KIM failure complete callback ");
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st_reg_complete(st_gdata, err);
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clear_bit(ST_REG_PENDING, &st_gdata->st_state);
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}
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return -EINVAL;
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}
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spin_lock_irqsave(&st_gdata->lock, flags);
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clear_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state);
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st_recv = st_int_recv;
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@ -576,10 +582,10 @@ long st_register(struct st_proto_s *new_proto)
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if (st_gdata->is_registered[new_proto->chnl_id] == true) {
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pr_err(" proto %d already registered ",
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new_proto->chnl_id);
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spin_unlock_irqrestore(&st_gdata->lock, flags);
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return -EALREADY;
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}
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spin_lock_irqsave(&st_gdata->lock, flags);
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add_channel_to_table(st_gdata, new_proto);
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st_gdata->protos_registered++;
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new_proto->write = st_write;
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@ -619,7 +625,7 @@ long st_unregister(struct st_proto_s *proto)
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spin_lock_irqsave(&st_gdata->lock, flags);
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if (st_gdata->list[proto->chnl_id] == NULL) {
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if (st_gdata->is_registered[proto->chnl_id] == false) {
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pr_err(" chnl_id %d not registered", proto->chnl_id);
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spin_unlock_irqrestore(&st_gdata->lock, flags);
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return -EPROTONOSUPPORT;
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|
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@ -629,6 +635,10 @@ long st_unregister(struct st_proto_s *proto)
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remove_channel_from_table(st_gdata, proto);
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spin_unlock_irqrestore(&st_gdata->lock, flags);
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/* paranoid check */
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if (st_gdata->protos_registered < ST_EMPTY)
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st_gdata->protos_registered = ST_EMPTY;
|
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|
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if ((st_gdata->protos_registered == ST_EMPTY) &&
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(!test_bit(ST_REG_PENDING, &st_gdata->st_state))) {
|
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pr_info(" all chnl_ids unregistered ");
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|
|
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|||
|
|
@ -469,37 +469,21 @@ long st_kim_start(void *kim_data)
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/* wait for ldisc to be installed */
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err = wait_for_completion_timeout(&kim_gdata->ldisc_installed,
|
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msecs_to_jiffies(LDISC_TIME));
|
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if (!err) { /* timeout */
|
||||
pr_err("line disc installation timed out ");
|
||||
kim_gdata->ldisc_install = 0;
|
||||
pr_info("ldisc_install = 0");
|
||||
sysfs_notify(&kim_gdata->kim_pdev->dev.kobj,
|
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NULL, "install");
|
||||
/* the following wait is never going to be completed,
|
||||
* since the ldisc was never installed, hence serving
|
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* as a mdelay of LDISC_TIME msecs */
|
||||
err = wait_for_completion_timeout
|
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(&kim_gdata->ldisc_installed,
|
||||
msecs_to_jiffies(LDISC_TIME));
|
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err = -ETIMEDOUT;
|
||||
if (!err) {
|
||||
/* ldisc installation timeout,
|
||||
* flush uart, power cycle BT_EN */
|
||||
pr_err("ldisc installation timeout");
|
||||
err = st_kim_stop(kim_gdata);
|
||||
continue;
|
||||
} else {
|
||||
/* ldisc installed now */
|
||||
pr_info("line discipline installed");
|
||||
err = download_firmware(kim_gdata);
|
||||
if (err != 0) {
|
||||
/* ldisc installed but fw download failed,
|
||||
* flush uart & power cycle BT_EN */
|
||||
pr_err("download firmware failed");
|
||||
kim_gdata->ldisc_install = 0;
|
||||
pr_info("ldisc_install = 0");
|
||||
sysfs_notify(&kim_gdata->kim_pdev->dev.kobj,
|
||||
NULL, "install");
|
||||
/* this wait might be completed, though in the
|
||||
* tty_close() since the ldisc is already
|
||||
* installed */
|
||||
err = wait_for_completion_timeout
|
||||
(&kim_gdata->ldisc_installed,
|
||||
msecs_to_jiffies(LDISC_TIME));
|
||||
err = -EINVAL;
|
||||
err = st_kim_stop(kim_gdata);
|
||||
continue;
|
||||
} else { /* on success don't retry */
|
||||
break;
|
||||
|
|
@ -510,8 +494,14 @@ long st_kim_start(void *kim_data)
|
|||
}
|
||||
|
||||
/**
|
||||
* st_kim_stop - called from ST Core, on the last un-registration
|
||||
* toggle low the chip enable gpio
|
||||
* st_kim_stop - stop communication with chip.
|
||||
* This can be called from ST Core/KIM, on the-
|
||||
* (a) last un-register when chip need not be powered there-after,
|
||||
* (b) upon failure to either install ldisc or download firmware.
|
||||
* The function is responsible to (a) notify UIM about un-installation,
|
||||
* (b) flush UART if the ldisc was installed.
|
||||
* (c) reset BT_EN - pull down nshutdown at the end.
|
||||
* (d) invoke platform's chip disabling routine.
|
||||
*/
|
||||
long st_kim_stop(void *kim_data)
|
||||
{
|
||||
|
|
@ -519,12 +509,16 @@ long st_kim_stop(void *kim_data)
|
|||
struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data;
|
||||
struct ti_st_plat_data *pdata =
|
||||
kim_gdata->kim_pdev->dev.platform_data;
|
||||
struct tty_struct *tty = kim_gdata->core_data->tty;
|
||||
|
||||
INIT_COMPLETION(kim_gdata->ldisc_installed);
|
||||
|
||||
if (tty) { /* can be called before ldisc is installed */
|
||||
/* Flush any pending characters in the driver and discipline. */
|
||||
tty_ldisc_flush(kim_gdata->core_data->tty);
|
||||
tty_driver_flush_buffer(kim_gdata->core_data->tty);
|
||||
tty_ldisc_flush(tty);
|
||||
tty_driver_flush_buffer(tty);
|
||||
tty->ops->flush_buffer(tty);
|
||||
}
|
||||
|
||||
/* send uninstall notification to UIM */
|
||||
pr_info("ldisc_install = 0");
|
||||
|
|
@ -579,6 +573,28 @@ static ssize_t show_install(struct device *dev,
|
|||
return sprintf(buf, "%d\n", kim_data->ldisc_install);
|
||||
}
|
||||
|
||||
#ifdef DEBUG
|
||||
static ssize_t store_dev_name(struct device *dev,
|
||||
struct device_attribute *attr, const char *buf, size_t count)
|
||||
{
|
||||
struct kim_data_s *kim_data = dev_get_drvdata(dev);
|
||||
pr_debug("storing dev name >%s<", buf);
|
||||
strncpy(kim_data->dev_name, buf, count);
|
||||
pr_debug("stored dev name >%s<", kim_data->dev_name);
|
||||
return count;
|
||||
}
|
||||
|
||||
static ssize_t store_baud_rate(struct device *dev,
|
||||
struct device_attribute *attr, const char *buf, size_t count)
|
||||
{
|
||||
struct kim_data_s *kim_data = dev_get_drvdata(dev);
|
||||
pr_debug("storing baud rate >%s<", buf);
|
||||
sscanf(buf, "%ld", &kim_data->baud_rate);
|
||||
pr_debug("stored baud rate >%ld<", kim_data->baud_rate);
|
||||
return count;
|
||||
}
|
||||
#endif /* if DEBUG */
|
||||
|
||||
static ssize_t show_dev_name(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
|
|
@ -605,10 +621,18 @@ static struct kobj_attribute ldisc_install =
|
|||
__ATTR(install, 0444, (void *)show_install, NULL);
|
||||
|
||||
static struct kobj_attribute uart_dev_name =
|
||||
#ifdef DEBUG /* TODO: move this to debug-fs if possible */
|
||||
__ATTR(dev_name, 0644, (void *)show_dev_name, (void *)store_dev_name);
|
||||
#else
|
||||
__ATTR(dev_name, 0444, (void *)show_dev_name, NULL);
|
||||
#endif
|
||||
|
||||
static struct kobj_attribute uart_baud_rate =
|
||||
#ifdef DEBUG /* TODO: move to debugfs */
|
||||
__ATTR(baud_rate, 0644, (void *)show_baud_rate, (void *)store_baud_rate);
|
||||
#else
|
||||
__ATTR(baud_rate, 0444, (void *)show_baud_rate, NULL);
|
||||
#endif
|
||||
|
||||
static struct kobj_attribute uart_flow_cntrl =
|
||||
__ATTR(flow_cntrl, 0444, (void *)show_flow_cntrl, NULL);
|
||||
|
|
|
|||
|
|
@ -14,7 +14,6 @@
|
|||
#include <linux/module.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/major.h>
|
||||
#include <linux/kobj_map.h>
|
||||
#include <linux/cdev.h>
|
||||
|
||||
#include <linux/device.h>
|
||||
|
|
|
|||
Loading…
Reference in a new issue