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author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2009-09-22 23:46:07 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 14:39:43 (GMT) |
commit | 8cec03eee4a771f949c70cff07775c9bb21d4642 (patch) | |
tree | 663493a95ca5cea6a3a4ca3a016ba02f00f42046 /drivers/hwmon/lm70.c | |
parent | d2a5c10f806b089a6e6f10deefd01dc4ce67940d (diff) | |
download | linux-fsl-qoriq-8cec03eee4a771f949c70cff07775c9bb21d4642.tar.xz |
hwmon: lm70: convert to device table matching
Make the code a little bit nicer, and shorter.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Kaiwan N Billimoria <kaiwan@designergraphix.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/hwmon/lm70.c')
-rw-r--r-- | drivers/hwmon/lm70.c | 55 |
1 files changed, 19 insertions, 36 deletions
diff --git a/drivers/hwmon/lm70.c b/drivers/hwmon/lm70.c index ae6204f..ab8a5d3 100644 --- a/drivers/hwmon/lm70.c +++ b/drivers/hwmon/lm70.c @@ -32,6 +32,7 @@ #include <linux/sysfs.h> #include <linux/hwmon.h> #include <linux/mutex.h> +#include <linux/mod_devicetable.h> #include <linux/spi/spi.h> @@ -130,11 +131,20 @@ static DEVICE_ATTR(name, S_IRUGO, lm70_show_name, NULL); /*----------------------------------------------------------------------*/ -static int __devinit common_probe(struct spi_device *spi, int chip) +static int __devinit lm70_probe(struct spi_device *spi) { + int chip = spi_get_device_id(spi)->driver_data; struct lm70 *p_lm70; int status; + /* signaling is SPI_MODE_0 for both LM70 and TMP121 */ + if (spi->mode & (SPI_CPOL | SPI_CPHA)) + return -EINVAL; + + /* 3-wire link (shared SI/SO) for LM70 */ + if (chip == LM70_CHIP_LM70 && !(spi->mode & SPI_3WIRE)) + return -EINVAL; + /* NOTE: we assume 8-bit words, and convert to 16 bits manually */ p_lm70 = kzalloc(sizeof *p_lm70, GFP_KERNEL); @@ -170,24 +180,6 @@ out_dev_reg_failed: return status; } -static int __devinit lm70_probe(struct spi_device *spi) -{ - /* signaling is SPI_MODE_0 on a 3-wire link (shared SI/SO) */ - if ((spi->mode & (SPI_CPOL | SPI_CPHA)) || !(spi->mode & SPI_3WIRE)) - return -EINVAL; - - return common_probe(spi, LM70_CHIP_LM70); -} - -static int __devinit tmp121_probe(struct spi_device *spi) -{ - /* signaling is SPI_MODE_0 with only MISO connected */ - if (spi->mode & (SPI_CPOL | SPI_CPHA)) - return -EINVAL; - - return common_probe(spi, LM70_CHIP_TMP121); -} - static int __devexit lm70_remove(struct spi_device *spi) { struct lm70 *p_lm70 = dev_get_drvdata(&spi->dev); @@ -201,41 +193,32 @@ static int __devexit lm70_remove(struct spi_device *spi) return 0; } -static struct spi_driver tmp121_driver = { - .driver = { - .name = "tmp121", - .owner = THIS_MODULE, - }, - .probe = tmp121_probe, - .remove = __devexit_p(lm70_remove), + +static const struct spi_device_id lm70_ids[] = { + { "lm70", LM70_CHIP_LM70 }, + { "tmp121", LM70_CHIP_TMP121 }, + { }, }; +MODULE_DEVICE_TABLE(spi, lm70_ids); static struct spi_driver lm70_driver = { .driver = { .name = "lm70", .owner = THIS_MODULE, }, + .id_table = lm70_ids, .probe = lm70_probe, .remove = __devexit_p(lm70_remove), }; static int __init init_lm70(void) { - int ret = spi_register_driver(&lm70_driver); - if (ret) - return ret; - - ret = spi_register_driver(&tmp121_driver); - if (ret) - spi_unregister_driver(&lm70_driver); - - return ret; + return spi_register_driver(&lm70_driver); } static void __exit cleanup_lm70(void) { spi_unregister_driver(&lm70_driver); - spi_unregister_driver(&tmp121_driver); } module_init(init_lm70); |