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drivers/i2c/wacom_ts: Add support for WCOM touchscreen device driver 

BUG=chrome-os-partner:57846

Change-Id: Id6bd91b3fd6420994ad5811d362618b1a38a8afa
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/17092
Tested-by: build bot (Jenkins)
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Furquan Shaikh 2016-10-21 16:42:45 -07:00 committed by Furquan Shaikh
parent f8a4f41d48
commit 16e660560a
4 changed files with 93 additions and 0 deletions
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3
src/drivers/i2c/wacom_ts/Kconfig Normal file
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config DRIVERS_I2C_WACOM_TS
bool
select DRIVERS_I2C_GENERIC

1
src/drivers/i2c/wacom_ts/Makefile.inc Normal file
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ramstage-$(CONFIG_DRIVERS_I2C_WACOM_TS) += ts.c

30
src/drivers/i2c/wacom_ts/chip.h Normal file
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/*
* This file is part of the coreboot project.
*
* Copyright 2016 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __I2C_WACOM_TS_CHIP_H__
#define __I2C_WACOM_TS_CHIP_H__
#include <drivers/i2c/generic/chip.h>
#define WCOM50C1_HID "WCOM50C1"
#define PNP0C50_CID "PNP0C50"
#define WCOM_TS_DESC "WCOM Touchscreen"
struct drivers_i2c_wacom_ts_config {
struct drivers_i2c_generic_config generic;
uint8_t hid_desc_reg_offset;
};
#endif /* __I2C_WACOM_TS_CHIP_H__ */

59
src/drivers/i2c/wacom_ts/ts.c Normal file
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/*
* This file is part of the coreboot project.
*
* Copyright 2016 Google Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/acpigen_dsm.h>
#include <device/device.h>
#include <stdint.h>
#include "chip.h"
static void i2c_wacom_ts_fill_dsm(struct device *dev)
{
struct drivers_i2c_wacom_ts_config *config = dev->chip_info;
struct dsm_i2c_hid_config dsm_config = {
.hid_desc_reg_offset = config->hid_desc_reg_offset,
};
acpigen_write_dsm_i2c_hid(&dsm_config);
}
static void i2c_wacom_ts_fill_ssdt_generator(struct device *dev)
{
i2c_generic_fill_ssdt(dev, &i2c_wacom_ts_fill_dsm);
}
static const char *i2c_wacom_ts_acpi_name(struct device *dev)
{
return "WCTS";
}
static struct device_operations i2c_wacom_ts_ops = {
.read_resources = DEVICE_NOOP,
.set_resources = DEVICE_NOOP,
.enable_resources = DEVICE_NOOP,
#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
.acpi_name = &i2c_wacom_ts_acpi_name,
.acpi_fill_ssdt_generator = &i2c_wacom_ts_fill_ssdt_generator,
#endif
};
static void i2c_wacom_ts_enable(struct device *dev)
{
dev->ops = &i2c_wacom_ts_ops;
}
struct chip_operations drivers_i2c_wacom_ts_ops = {
CHIP_NAME("Wacom Touchscreen Device")
.enable_dev = &i2c_wacom_ts_enable
};