diff options
author | Furquan Shaikh <furquan@chromium.org> | 2016-10-21 16:42:45 -0700 |
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committer | Furquan Shaikh <furquan@google.com> | 2016-10-26 22:51:57 +0200 |
commit | 16e660560ab4892d8a3add2068b187b633c63361 (patch) | |
tree | 244a7966a62e0d04e0cac64bae04f62aa2384d8d /src/drivers/i2c/wacom_ts/ts.c | |
parent | f8a4f41d48acc9ecffc9d74185fad0cb8651f4da (diff) |
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>
Diffstat (limited to 'src/drivers/i2c/wacom_ts/ts.c')
-rw-r--r-- | src/drivers/i2c/wacom_ts/ts.c | 59 |
1 files changed, 59 insertions, 0 deletions
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 <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 +}; |