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b33752c300
This patch rejiggers the i2c-hid code so that the OF (Open Firmware aka Device Tree) and ACPI support is separated out a bit. The OF and ACPI drivers are now separate modules that wrap the core module. Essentially, what we're doing here: * Make "power up" and "power down" a function that can be (optionally) implemented by a given user of the i2c-hid core. * The OF and ACPI modules are drivers on their own, so they implement probe / remove / suspend / resume / shutdown. The core code provides implementations that OF and ACPI can call into. We'll organize this so that we now have 3 modules: the old i2c-hid module becomes the "core" module and two new modules will depend on it, handling probing the specific device. As part of this work, we'll remove the i2c-hid "platform data" concept since it's not needed. Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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#ifndef I2C_HID_H
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#define I2C_HID_H
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#include <linux/i2c.h>
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#ifdef CONFIG_DMI
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struct i2c_hid_desc *i2c_hid_get_dmi_i2c_hid_desc_override(uint8_t *i2c_name);
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char *i2c_hid_get_dmi_hid_report_desc_override(uint8_t *i2c_name,
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unsigned int *size);
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#else
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static inline struct i2c_hid_desc
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*i2c_hid_get_dmi_i2c_hid_desc_override(uint8_t *i2c_name)
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{ return NULL; }
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static inline char *i2c_hid_get_dmi_hid_report_desc_override(uint8_t *i2c_name,
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unsigned int *size)
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{ return NULL; }
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#endif
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/**
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* struct i2chid_ops - Ops provided to the core.
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*
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* @power_up: do sequencing to power up the device.
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* @power_down: do sequencing to power down the device.
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* @shutdown_tail: called at the end of shutdown.
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*/
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struct i2chid_ops {
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int (*power_up)(struct i2chid_ops *ops);
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void (*power_down)(struct i2chid_ops *ops);
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void (*shutdown_tail)(struct i2chid_ops *ops);
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};
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int i2c_hid_core_probe(struct i2c_client *client, struct i2chid_ops *ops,
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u16 hid_descriptor_address);
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int i2c_hid_core_remove(struct i2c_client *client);
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void i2c_hid_core_shutdown(struct i2c_client *client);
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extern const struct dev_pm_ops i2c_hid_core_pm;
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#endif
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