* [PATCH 2/2] misc: ad525x_dpot: Add support for SPI module device table matching
2011-11-18 10:05 [PATCH 1/2] misc: ad525x_dpot: Fix AD8400 spi transfer size michael.hennerich
@ 2011-11-18 10:05 ` michael.hennerich
2011-11-22 16:11 ` Arnd Bergmann
0 siblings, 1 reply; 4+ messages in thread
From: michael.hennerich @ 2011-11-18 10:05 UTC (permalink / raw)
To: greg, arnd; +Cc: device-drivers-devel, drivers, linux-kernel, Michael Hennerich
From: Michael Hennerich <michael.hennerich@analog.com>
Passing device name via platform data, is a leftover from times where
SPI module device table matching was not existent.
* Add id_table and remove old mechanism.
(To my knowledge no intree boards affected)
* Miscellaneous other cleanup.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
---
drivers/misc/ad525x_dpot-i2c.c | 10 +---
drivers/misc/ad525x_dpot-spi.c | 97 ++++++++++++++++------------------------
drivers/misc/ad525x_dpot.c | 24 +++++-----
drivers/misc/ad525x_dpot.h | 8 +---
4 files changed, 53 insertions(+), 86 deletions(-)
diff --git a/drivers/misc/ad525x_dpot-i2c.c b/drivers/misc/ad525x_dpot-i2c.c
index a39e055..83adab6 100644
--- a/drivers/misc/ad525x_dpot-i2c.c
+++ b/drivers/misc/ad525x_dpot-i2c.c
@@ -1,7 +1,7 @@
/*
* Driver for the Analog Devices digital potentiometers (I2C bus)
*
- * Copyright (C) 2010 Michael Hennerich, Analog Devices Inc.
+ * Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
@@ -11,7 +11,6 @@
#include "ad525x_dpot.h"
-/* ------------------------------------------------------------------------- */
/* I2C bus functions */
static int write_d8(void *client, u8 val)
{
@@ -60,18 +59,13 @@ static int __devinit ad_dpot_i2c_probe(struct i2c_client *client,
.bops = &bops,
};
- struct ad_dpot_id dpot_id = {
- .name = (char *) &id->name,
- .devid = id->driver_data,
- };
-
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_WORD_DATA)) {
dev_err(&client->dev, "SMBUS Word Data not Supported\n");
return -EIO;
}
- return ad_dpot_probe(&client->dev, &bdata, &dpot_id);
+ return ad_dpot_probe(&client->dev, &bdata, id->driver_data, id->name);
}
static int __devexit ad_dpot_i2c_remove(struct i2c_client *client)
diff --git a/drivers/misc/ad525x_dpot-spi.c b/drivers/misc/ad525x_dpot-spi.c
index 7f9a55a..822749e 100644
--- a/drivers/misc/ad525x_dpot-spi.c
+++ b/drivers/misc/ad525x_dpot-spi.c
@@ -1,7 +1,7 @@
/*
* Driver for the Analog Devices digital potentiometers (SPI bus)
*
- * Copyright (C) 2010 Michael Hennerich, Analog Devices Inc.
+ * Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
@@ -11,40 +11,6 @@
#include "ad525x_dpot.h"
-static const struct ad_dpot_id ad_dpot_spi_devlist[] = {
- {.name = "ad5160", .devid = AD5160_ID},
- {.name = "ad5161", .devid = AD5161_ID},
- {.name = "ad5162", .devid = AD5162_ID},
- {.name = "ad5165", .devid = AD5165_ID},
- {.name = "ad5200", .devid = AD5200_ID},
- {.name = "ad5201", .devid = AD5201_ID},
- {.name = "ad5203", .devid = AD5203_ID},
- {.name = "ad5204", .devid = AD5204_ID},
- {.name = "ad5206", .devid = AD5206_ID},
- {.name = "ad5207", .devid = AD5207_ID},
- {.name = "ad5231", .devid = AD5231_ID},
- {.name = "ad5232", .devid = AD5232_ID},
- {.name = "ad5233", .devid = AD5233_ID},
- {.name = "ad5235", .devid = AD5235_ID},
- {.name = "ad5260", .devid = AD5260_ID},
- {.name = "ad5262", .devid = AD5262_ID},
- {.name = "ad5263", .devid = AD5263_ID},
- {.name = "ad5290", .devid = AD5290_ID},
- {.name = "ad5291", .devid = AD5291_ID},
- {.name = "ad5292", .devid = AD5292_ID},
- {.name = "ad5293", .devid = AD5293_ID},
- {.name = "ad7376", .devid = AD7376_ID},
- {.name = "ad8400", .devid = AD8400_ID},
- {.name = "ad8402", .devid = AD8402_ID},
- {.name = "ad8403", .devid = AD8403_ID},
- {.name = "adn2850", .devid = ADN2850_ID},
- {.name = "ad5270", .devid = AD5270_ID},
- {.name = "ad5271", .devid = AD5271_ID},
- {}
-};
-
-/* ------------------------------------------------------------------------- */
-
/* SPI bus functions */
static int write8(void *client, u8 val)
{
@@ -109,36 +75,16 @@ static const struct ad_dpot_bus_ops bops = {
.write_r8d8 = write16,
.write_r8d16 = write24,
};
-
-static const struct ad_dpot_id *dpot_match_id(const struct ad_dpot_id *id,
- char *name)
-{
- while (id->name && id->name[0]) {
- if (strcmp(name, id->name) == 0)
- return id;
- id++;
- }
- return NULL;
-}
-
static int __devinit ad_dpot_spi_probe(struct spi_device *spi)
{
- char *name = spi->dev.platform_data;
- const struct ad_dpot_id *dpot_id;
-
struct ad_dpot_bus_data bdata = {
.client = spi,
.bops = &bops,
};
- dpot_id = dpot_match_id(ad_dpot_spi_devlist, name);
-
- if (dpot_id == NULL) {
- dev_err(&spi->dev, "%s not in supported device list", name);
- return -ENODEV;
- }
-
- return ad_dpot_probe(&spi->dev, &bdata, dpot_id);
+ return ad_dpot_probe(&spi->dev, &bdata,
+ spi_get_device_id(spi)->driver_data,
+ spi_get_device_id(spi)->name);
}
static int __devexit ad_dpot_spi_remove(struct spi_device *spi)
@@ -146,14 +92,47 @@ static int __devexit ad_dpot_spi_remove(struct spi_device *spi)
return ad_dpot_remove(&spi->dev);
}
+static const struct spi_device_id ad_dpot_spi_id[] = {
+ {"ad5160", AD5160_ID},
+ {"ad5161", AD5161_ID},
+ {"ad5162", AD5162_ID},
+ {"ad5165", AD5165_ID},
+ {"ad5200", AD5200_ID},
+ {"ad5201", AD5201_ID},
+ {"ad5203", AD5203_ID},
+ {"ad5204", AD5204_ID},
+ {"ad5206", AD5206_ID},
+ {"ad5207", AD5207_ID},
+ {"ad5231", AD5231_ID},
+ {"ad5232", AD5232_ID},
+ {"ad5233", AD5233_ID},
+ {"ad5235", AD5235_ID},
+ {"ad5260", AD5260_ID},
+ {"ad5262", AD5262_ID},
+ {"ad5263", AD5263_ID},
+ {"ad5290", AD5290_ID},
+ {"ad5291", AD5291_ID},
+ {"ad5292", AD5292_ID},
+ {"ad5293", AD5293_ID},
+ {"ad7376", AD7376_ID},
+ {"ad8400", AD8400_ID},
+ {"ad8402", AD8402_ID},
+ {"ad8403", AD8403_ID},
+ {"adn2850", ADN2850_ID},
+ {"ad5270", AD5270_ID},
+ {"ad5271", AD5271_ID},
+ {}
+};
+MODULE_DEVICE_TABLE(spi, ad_dpot_spi_id);
+
static struct spi_driver ad_dpot_spi_driver = {
.driver = {
.name = "ad_dpot",
- .bus = &spi_bus_type,
.owner = THIS_MODULE,
},
.probe = ad_dpot_spi_probe,
.remove = __devexit_p(ad_dpot_spi_remove),
+ .id_table = ad_dpot_spi_id,
};
static int __init ad_dpot_spi_init(void)
diff --git a/drivers/misc/ad525x_dpot.c b/drivers/misc/ad525x_dpot.c
index 7cb9110..1d1d426 100644
--- a/drivers/misc/ad525x_dpot.c
+++ b/drivers/misc/ad525x_dpot.c
@@ -64,7 +64,7 @@
* Author: Chris Verges <chrisv@cyberswitching.com>
*
* derived from ad5252.c
- * Copyright (c) 2006 Michael Hennerich <hennerich@blackfin.uclinux.org>
+ * Copyright (c) 2006-2011 Michael Hennerich <hennerich@blackfin.uclinux.org>
*
* Licensed under the GPL-2 or later.
*/
@@ -76,8 +76,6 @@
#include <linux/delay.h>
#include <linux/slab.h>
-#define DRIVER_VERSION "0.2"
-
#include "ad525x_dpot.h"
/*
@@ -687,8 +685,9 @@ inline void ad_dpot_remove_files(struct device *dev,
}
}
-__devinit int ad_dpot_probe(struct device *dev,
- struct ad_dpot_bus_data *bdata, const struct ad_dpot_id *id)
+int __devinit ad_dpot_probe(struct device *dev,
+ struct ad_dpot_bus_data *bdata, unsigned long devid,
+ const char *name)
{
struct dpot_data *data;
@@ -704,13 +703,13 @@ __devinit int ad_dpot_probe(struct device *dev,
mutex_init(&data->update_lock);
data->bdata = *bdata;
- data->devid = id->devid;
+ data->devid = devid;
- data->max_pos = 1 << DPOT_MAX_POS(data->devid);
+ data->max_pos = 1 << DPOT_MAX_POS(devid);
data->rdac_mask = data->max_pos - 1;
- data->feat = DPOT_FEAT(data->devid);
- data->uid = DPOT_UID(data->devid);
- data->wipers = DPOT_WIPERS(data->devid);
+ data->feat = DPOT_FEAT(devid);
+ data->uid = DPOT_UID(devid);
+ data->wipers = DPOT_WIPERS(devid);
for (i = DPOT_RDAC0; i < MAX_RDACS; i++)
if (data->wipers & (1 << i)) {
@@ -731,7 +730,7 @@ __devinit int ad_dpot_probe(struct device *dev,
}
dev_info(dev, "%s %d-Position Digital Potentiometer registered\n",
- id->name, data->max_pos);
+ name, data->max_pos);
return 0;
@@ -745,7 +744,7 @@ exit_free:
dev_set_drvdata(dev, NULL);
exit:
dev_err(dev, "failed to create client for %s ID 0x%lX\n",
- id->name, id->devid);
+ name, devid);
return err;
}
EXPORT_SYMBOL(ad_dpot_probe);
@@ -770,4 +769,3 @@ MODULE_AUTHOR("Chris Verges <chrisv@cyberswitching.com>, "
"Michael Hennerich <hennerich@blackfin.uclinux.org>");
MODULE_DESCRIPTION("Digital potentiometer driver");
MODULE_LICENSE("GPL");
-MODULE_VERSION(DRIVER_VERSION);
diff --git a/drivers/misc/ad525x_dpot.h b/drivers/misc/ad525x_dpot.h
index 82b2cb7..6bd1eba 100644
--- a/drivers/misc/ad525x_dpot.h
+++ b/drivers/misc/ad525x_dpot.h
@@ -208,12 +208,8 @@ struct ad_dpot_bus_data {
const struct ad_dpot_bus_ops *bops;
};
-struct ad_dpot_id {
- char *name;
- unsigned long devid;
-};
-
-int ad_dpot_probe(struct device *dev, struct ad_dpot_bus_data *bdata, const struct ad_dpot_id *id);
+int ad_dpot_probe(struct device *dev, struct ad_dpot_bus_data *bdata,
+ unsigned long devid, const char *name);
int ad_dpot_remove(struct device *dev);
#endif
--
1.7.0.4
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