[coreboot-gerrit] Patch set updated for coreboot: drivers/i2c/wacom_ts: Add support for WCOM touchscreen device driver
Furquan Shaikh (furquan@google.com)
gerrit at coreboot.org
Tue Oct 25 00:12:35 CEST 2016
Furquan Shaikh (furquan at google.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17092
-gerrit
commit 97464e8f15ce3106f00b52aad51ee5089e02f28e
Author: Furquan Shaikh <furquan at chromium.org>
Date: Fri Oct 21 16:42:45 2016 -0700
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 at chromium.org>
---
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(+)
diff --git a/src/drivers/i2c/wacom_ts/Kconfig b/src/drivers/i2c/wacom_ts/Kconfig
new file mode 100644
index 0000000..50da3f1
--- /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 0000000..9455099
--- /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 0000000..b59f630
--- /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 <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__ */
diff --git a/src/drivers/i2c/wacom_ts/ts.c b/src/drivers/i2c/wacom_ts/ts.c
new file mode 100644
index 0000000..ebc8883
--- /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
+};
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