From 16e660560ab4892d8a3add2068b187b633c63361 Mon Sep 17 00:00:00 2001 From: Furquan Shaikh Date: Fri, 21 Oct 2016 16:42:45 -0700 Subject: drivers/i2c/wacom_ts: Add support for WCOM touchscreen device driver MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit BUG=chrome-os-partner:57846 Change-Id: Id6bd91b3fd6420994ad5811d362618b1a38a8afa Signed-off-by: Furquan Shaikh Reviewed-on: https://review.coreboot.org/17092 Tested-by: build bot (Jenkins) Reviewed-by: Jonathan Neuschäfer Reviewed-by: Duncan Laurie --- src/drivers/i2c/wacom_ts/Kconfig | 3 ++ src/drivers/i2c/wacom_ts/Makefile.inc | 1 + src/drivers/i2c/wacom_ts/chip.h | 30 ++++++++++++++++++ src/drivers/i2c/wacom_ts/ts.c | 59 +++++++++++++++++++++++++++++++++++ 4 files changed, 93 insertions(+) create mode 100644 src/drivers/i2c/wacom_ts/Kconfig create mode 100644 src/drivers/i2c/wacom_ts/Makefile.inc create mode 100644 src/drivers/i2c/wacom_ts/chip.h create mode 100644 src/drivers/i2c/wacom_ts/ts.c diff --git a/src/drivers/i2c/wacom_ts/Kconfig b/src/drivers/i2c/wacom_ts/Kconfig new file mode 100644 index 0000000000..50da3f14ec --- /dev/null +++ b/src/drivers/i2c/wacom_ts/Kconfig @@ -0,0 +1,3 @@ +config DRIVERS_I2C_WACOM_TS + bool + select DRIVERS_I2C_GENERIC diff --git a/src/drivers/i2c/wacom_ts/Makefile.inc b/src/drivers/i2c/wacom_ts/Makefile.inc new file mode 100644 index 0000000000..94550997f6 --- /dev/null +++ b/src/drivers/i2c/wacom_ts/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_DRIVERS_I2C_WACOM_TS) += ts.c diff --git a/src/drivers/i2c/wacom_ts/chip.h b/src/drivers/i2c/wacom_ts/chip.h new file mode 100644 index 0000000000..b59f630603 --- /dev/null +++ b/src/drivers/i2c/wacom_ts/chip.h @@ -0,0 +1,30 @@ +/* + * 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 + +#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__ */ diff --git a/src/drivers/i2c/wacom_ts/ts.c b/src/drivers/i2c/wacom_ts/ts.c new file mode 100644 index 0000000000..ebc888361b --- /dev/null +++ b/src/drivers/i2c/wacom_ts/ts.c @@ -0,0 +1,59 @@ +/* + * 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 +#include +#include +#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 +}; -- cgit v1.2.3