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4d395cb071
The current implementation of the goodix_berlin driver lacks support for revisions A and B of the Berlin IC. This change adds support for the gt9897 IC, which is a Berlin-A revision part. The differences between revision D and A are rather minor, a handful of address changes and a slightly larger read buffer. They were taken from the driver published by Goodix, which does a few more things that don't appear to be necessary for the touchscreen to work properly. Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Tested-by: Luca Weiss <luca.weiss@fairphone.com> Signed-off-by: Jens Reidel <adrian@mainlining.org> Link: https://lore.kernel.org/r/20250309062315.35720-3-adrian@mainlining.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
39 lines
941 B
C
39 lines
941 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Goodix Touchscreen Driver
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* Copyright (C) 2020 - 2021 Goodix, Inc.
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* Copyright (C) 2023 Linaro Ltd.
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*
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* Based on goodix_berlin_berlin driver.
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*/
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#ifndef __GOODIX_BERLIN_H_
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#define __GOODIX_BERLIN_H_
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#include <linux/pm.h>
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#define GOODIX_BERLIN_FW_VERSION_INFO_ADDR_A 0x1000C
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#define GOODIX_BERLIN_FW_VERSION_INFO_ADDR_D 0x10014
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#define GOODIX_BERLIN_IC_INFO_ADDR_A 0x10068
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#define GOODIX_BERLIN_IC_INFO_ADDR_D 0x10070
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struct goodix_berlin_ic_data {
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int fw_version_info_addr;
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int ic_info_addr;
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ssize_t read_dummy_len;
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ssize_t read_prefix_len;
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};
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struct device;
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struct input_id;
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struct regmap;
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int goodix_berlin_probe(struct device *dev, int irq, const struct input_id *id,
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struct regmap *regmap,
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const struct goodix_berlin_ic_data *ic_data);
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extern const struct dev_pm_ops goodix_berlin_pm_ops;
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extern const struct attribute_group *goodix_berlin_groups[];
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#endif
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