[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/drivers/hid/intel-ish-hid/ishtp-hid.c b/src/kernel/linux/v4.19/drivers/hid/intel-ish-hid/ishtp-hid.c
new file mode 100644
index 0000000..e918d78
--- /dev/null
+++ b/src/kernel/linux/v4.19/drivers/hid/intel-ish-hid/ishtp-hid.c
@@ -0,0 +1,246 @@
+/*
+ * ISHTP-HID glue driver.
+ *
+ * Copyright (c) 2012-2016, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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 <linux/hid.h>
+#include <uapi/linux/input.h>
+#include "ishtp/client.h"
+#include "ishtp-hid.h"
+
+/**
+ * ishtp_hid_parse() - hid-core .parse() callback
+ * @hid: hid device instance
+ *
+ * This function gets called during call to hid_add_device
+ *
+ * Return: 0 on success and non zero on error
+ */
+static int ishtp_hid_parse(struct hid_device *hid)
+{
+ struct ishtp_hid_data *hid_data = hid->driver_data;
+ struct ishtp_cl_data *client_data = hid_data->client_data;
+ int rv;
+
+ rv = hid_parse_report(hid, client_data->report_descr[hid_data->index],
+ client_data->report_descr_size[hid_data->index]);
+ if (rv)
+ return rv;
+
+ return 0;
+}
+
+/* Empty callbacks with success return code */
+static int ishtp_hid_start(struct hid_device *hid)
+{
+ return 0;
+}
+
+static void ishtp_hid_stop(struct hid_device *hid)
+{
+}
+
+static int ishtp_hid_open(struct hid_device *hid)
+{
+ return 0;
+}
+
+static void ishtp_hid_close(struct hid_device *hid)
+{
+}
+
+static int ishtp_raw_request(struct hid_device *hdev, unsigned char reportnum,
+ __u8 *buf, size_t len, unsigned char rtype, int reqtype)
+{
+ return 0;
+}
+
+/**
+ * ishtp_hid_request() - hid-core .request() callback
+ * @hid: hid device instance
+ * @rep: pointer to hid_report
+ * @reqtype: type of req. [GET|SET]_REPORT
+ *
+ * This function is used to set/get feaure/input report.
+ */
+static void ishtp_hid_request(struct hid_device *hid, struct hid_report *rep,
+ int reqtype)
+{
+ struct ishtp_hid_data *hid_data = hid->driver_data;
+ /* the specific report length, just HID part of it */
+ unsigned int len = ((rep->size - 1) >> 3) + 1 + (rep->id > 0);
+ char *buf;
+ unsigned int header_size = sizeof(struct hostif_msg);
+
+ len += header_size;
+
+ hid_data->request_done = false;
+ switch (reqtype) {
+ case HID_REQ_GET_REPORT:
+ hid_ishtp_get_report(hid, rep->id, rep->type);
+ break;
+ case HID_REQ_SET_REPORT:
+ /*
+ * Spare 7 bytes for 64b accesses through
+ * get/put_unaligned_le64()
+ */
+ buf = kzalloc(len + 7, GFP_KERNEL);
+ if (!buf)
+ return;
+
+ hid_output_report(rep, buf + header_size);
+ hid_ishtp_set_feature(hid, buf, len, rep->id);
+ kfree(buf);
+ break;
+ }
+}
+
+/**
+ * ishtp_wait_for_response() - hid-core .wait() callback
+ * @hid: hid device instance
+ *
+ * This function is used to wait after get feaure/input report.
+ *
+ * Return: 0 on success and non zero on error
+ */
+static int ishtp_wait_for_response(struct hid_device *hid)
+{
+ struct ishtp_hid_data *hid_data = hid->driver_data;
+ struct ishtp_cl_data *client_data = hid_data->client_data;
+ int rv;
+
+ hid_ishtp_trace(client_data, "%s hid %p\n", __func__, hid);
+
+ rv = ishtp_hid_link_ready_wait(hid_data->client_data);
+ if (rv)
+ return rv;
+
+ if (!hid_data->request_done)
+ wait_event_interruptible_timeout(hid_data->hid_wait,
+ hid_data->request_done, 3 * HZ);
+
+ if (!hid_data->request_done) {
+ hid_err(hid,
+ "timeout waiting for response from ISHTP device\n");
+ return -ETIMEDOUT;
+ }
+ hid_ishtp_trace(client_data, "%s hid %p done\n", __func__, hid);
+
+ hid_data->request_done = false;
+
+ return 0;
+}
+
+/**
+ * ishtp_hid_wakeup() - Wakeup caller
+ * @hid: hid device instance
+ *
+ * This function will wakeup caller waiting for Get/Set feature report
+ */
+void ishtp_hid_wakeup(struct hid_device *hid)
+{
+ struct ishtp_hid_data *hid_data = hid->driver_data;
+
+ hid_data->request_done = true;
+ wake_up_interruptible(&hid_data->hid_wait);
+}
+
+static struct hid_ll_driver ishtp_hid_ll_driver = {
+ .parse = ishtp_hid_parse,
+ .start = ishtp_hid_start,
+ .stop = ishtp_hid_stop,
+ .open = ishtp_hid_open,
+ .close = ishtp_hid_close,
+ .request = ishtp_hid_request,
+ .wait = ishtp_wait_for_response,
+ .raw_request = ishtp_raw_request
+};
+
+/**
+ * ishtp_hid_probe() - hid register ll driver
+ * @cur_hid_dev: Index of hid device calling to register
+ * @client_data: Client data pointer
+ *
+ * This function is used to allocate and add HID device.
+ *
+ * Return: 0 on success, non zero on error
+ */
+int ishtp_hid_probe(unsigned int cur_hid_dev,
+ struct ishtp_cl_data *client_data)
+{
+ int rv;
+ struct hid_device *hid;
+ struct ishtp_hid_data *hid_data;
+
+ hid = hid_allocate_device();
+ if (IS_ERR(hid)) {
+ rv = PTR_ERR(hid);
+ return -ENOMEM;
+ }
+
+ hid_data = kzalloc(sizeof(*hid_data), GFP_KERNEL);
+ if (!hid_data) {
+ rv = -ENOMEM;
+ goto err_hid_data;
+ }
+
+ hid_data->index = cur_hid_dev;
+ hid_data->client_data = client_data;
+ init_waitqueue_head(&hid_data->hid_wait);
+
+ hid->driver_data = hid_data;
+
+ client_data->hid_sensor_hubs[cur_hid_dev] = hid;
+
+ hid->ll_driver = &ishtp_hid_ll_driver;
+ hid->bus = BUS_INTEL_ISHTP;
+ hid->dev.parent = &client_data->cl_device->dev;
+ hid->version = le16_to_cpu(ISH_HID_VERSION);
+ hid->vendor = le16_to_cpu(ISH_HID_VENDOR);
+ hid->product = le16_to_cpu(ISH_HID_PRODUCT);
+ snprintf(hid->name, sizeof(hid->name), "%s %04X:%04X", "hid-ishtp",
+ hid->vendor, hid->product);
+
+ rv = hid_add_device(hid);
+ if (rv)
+ goto err_hid_device;
+
+ hid_ishtp_trace(client_data, "%s allocated hid %p\n", __func__, hid);
+
+ return 0;
+
+err_hid_device:
+ kfree(hid_data);
+err_hid_data:
+ hid_destroy_device(hid);
+ return rv;
+}
+
+/**
+ * ishtp_hid_probe() - Remove registered hid device
+ * @client_data: client data pointer
+ *
+ * This function is used to destroy allocatd HID device.
+ */
+void ishtp_hid_remove(struct ishtp_cl_data *client_data)
+{
+ int i;
+
+ for (i = 0; i < client_data->num_hid_devices; ++i) {
+ if (client_data->hid_sensor_hubs[i]) {
+ kfree(client_data->hid_sensor_hubs[i]->driver_data);
+ hid_destroy_device(client_data->hid_sensor_hubs[i]);
+ client_data->hid_sensor_hubs[i] = NULL;
+ }
+ }
+}