diff options
| author | Philipp Tomsich <philipp.tomsich@theobroma-systems.com> | 2016-09-15 10:32:03 +0200 |
|---|---|---|
| committer | Klaus Goger <klaus.goger@theobroma-systems.com> | 2016-09-18 15:53:10 +0200 |
| commit | 345b19bca4b1c336f61f17b9aa6a180d934b299f (patch) | |
| tree | c1e66932a65d6f7f786a207bdf2d3034de7025c3 /include/linux/mfd/axp20x.h | |
| parent | ba3f252e886e35989d18686ee589e9f57c3392df (diff) | |
mfd: axp20x: Provide interface for add-on drivers
Add-on drivers (e.g. hwmon) utilising a AXP20x, AXP22x or AXP80x need
access to the regmap provided by the device, but no interface for
retrieving the device/interface exists.
This adds a new function axp20x_node_to_regmap(), modelled after the
similar syscon_node_to_regmap(), to gain access to the regmap for
a AXP-node with a fully loaded driver.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Diffstat (limited to 'include/linux/mfd/axp20x.h')
| -rw-r--r-- | include/linux/mfd/axp20x.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h index fec597fb34cb..2ecf8c0b13d1 100644 --- a/include/linux/mfd/axp20x.h +++ b/include/linux/mfd/axp20x.h @@ -11,6 +11,7 @@ #ifndef __LINUX_MFD_AXP20X_H #define __LINUX_MFD_AXP20X_H +#include <linux/list.h> #include <linux/regmap.h> enum { @@ -524,6 +525,7 @@ struct axp20x_dev { struct mfd_cell *cells; const struct regmap_config *regmap_cfg; const struct regmap_irq_chip *regmap_irq_chip; + struct list_head list; }; #define BATTID_LEN 64 @@ -594,6 +596,17 @@ static inline int axp20x_read_variable_width(struct regmap *regmap, int axp20x_match_device(struct axp20x_dev *axp20x); /** + * axp20x_node_to_regmap(): Find the regmap for a axp20x device + * + * @np: node-pointer to the axp20x device + * + * This function lets add-on drivers (e.g. axp809-thermal) retrieve + * a registered axp20x device's regmap. The device must be fully + * configured or NULL will be returned. + */ +struct regmap *axp20x_node_to_regmap(struct device_node *np); + +/** * axp20x_device_probe(): Probe a configured axp20x device * * @axp20x: axp20x device to probe (must be configured) |