diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2013-03-12 11:38:46 +0100 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2013-04-08 06:16:38 +0200 |
| commit | 51c2a4871c1b47255ff8d74f0a86b2a0defff319 (patch) | |
| tree | 151e26fe0ff76d26dc69eb55d3f15562d598ea72 /drivers/hwmon/adt7x10.h | |
| parent | hwmon: (adt7410) Don't re-read non-volatile registers (diff) | |
| download | linux-51c2a4871c1b47255ff8d74f0a86b2a0defff319.tar.xz linux-51c2a4871c1b47255ff8d74f0a86b2a0defff319.zip | |
hwmon: (adt7410) Add support for the adt7310/adt7320
The adt7310/adt7320 is the SPI version of the adt7410/adt7420. The register map
layout is a bit different, i.e. the register addresses differ between the two
variants, but the bit layouts of the individual registers are identical. So both
chip variants can easily be supported by the same driver. The issue of non
matching register address layouts is solved by a simple look-up table which
translates the I2C addresses to the SPI addresses.
The patch moves the bulk of the adt7410 driver to a common module that will be
shared by the adt7410 and adt7310 drivers. This common module implements the
driver logic and uses a set of virtual functions to perform IO access. The
adt7410 and adt7310 driver modules provide proper implementations of these IO
accessor functions for I2C respective SPI.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/adt7x10.h')
| -rw-r--r-- | drivers/hwmon/adt7x10.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/hwmon/adt7x10.h b/drivers/hwmon/adt7x10.h new file mode 100644 index 000000000000..803d9b91c5db --- /dev/null +++ b/drivers/hwmon/adt7x10.h @@ -0,0 +1,37 @@ +#ifndef __HWMON_ADT7X10_H__ +#define __HWMON_ADT7X10_H__ + +#include <linux/types.h> +#include <linux/pm.h> + +/* ADT7410 registers definition */ +#define ADT7X10_TEMPERATURE 0 +#define ADT7X10_STATUS 2 +#define ADT7X10_CONFIG 3 +#define ADT7X10_T_ALARM_HIGH 4 +#define ADT7X10_T_ALARM_LOW 6 +#define ADT7X10_T_CRIT 8 +#define ADT7X10_T_HYST 0xA +#define ADT7X10_ID 0xB + +struct device; + +struct adt7x10_ops { + int (*read_byte)(struct device *, u8 reg); + int (*write_byte)(struct device *, u8 reg, u8 data); + int (*read_word)(struct device *, u8 reg); + int (*write_word)(struct device *, u8 reg, u16 data); +}; + +int adt7x10_probe(struct device *dev, const char *name, + const struct adt7x10_ops *ops); +int adt7x10_remove(struct device *dev); + +#ifdef CONFIG_PM_SLEEP +extern const struct dev_pm_ops adt7x10_dev_pm_ops; +#define ADT7X10_DEV_PM_OPS (&adt7x10_dev_pm_ops) +#else +#define ADT7X10_DEV_PM_OPS NULL +#endif + +#endif |