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-rw-r--r--drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c337
1 files changed, 337 insertions, 0 deletions
diff --git a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c
new file mode 100644
index 000000000..bb8bd7892
--- /dev/null
+++ b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_init.c
@@ -0,0 +1,337 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * AMD MP2 1.1 communication driver
+ *
+ * Copyright (c) 2022, Advanced Micro Devices, Inc.
+ * All Rights Reserved.
+ *
+ * Author: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/hid.h>
+
+#include "amd_sfh_init.h"
+#include "amd_sfh_interface.h"
+#include "../hid_descriptor/amd_sfh_hid_desc.h"
+
+static int amd_sfh_get_sensor_num(struct amd_mp2_dev *mp2, u8 *sensor_id)
+{
+ struct sfh_sensor_list *slist;
+ struct sfh_base_info binfo;
+ int num_of_sensors = 0;
+ int i;
+
+ memcpy_fromio(&binfo, mp2->vsbase, sizeof(struct sfh_base_info));
+ slist = &binfo.sbase.s_list;
+
+ for (i = 0; i < MAX_IDX; i++) {
+ switch (i) {
+ case ACCEL_IDX:
+ case GYRO_IDX:
+ case MAG_IDX:
+ case ALS_IDX:
+ case HPD_IDX:
+ if (BIT(i) & slist->sl.sensors)
+ sensor_id[num_of_sensors++] = i;
+ break;
+ }
+ }
+
+ return num_of_sensors;
+}
+
+static u32 amd_sfh_wait_for_response(struct amd_mp2_dev *mp2, u8 sid, u32 cmd_id)
+{
+ if (mp2->mp2_ops->response)
+ return mp2->mp2_ops->response(mp2, sid, cmd_id);
+
+ return 0;
+}
+
+static const char *get_sensor_name(int idx)
+{
+ switch (idx) {
+ case ACCEL_IDX:
+ return "accelerometer";
+ case GYRO_IDX:
+ return "gyroscope";
+ case MAG_IDX:
+ return "magnetometer";
+ case ALS_IDX:
+ return "ALS";
+ case HPD_IDX:
+ return "HPD";
+ default:
+ return "unknown sensor type";
+ }
+}
+
+static int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata)
+{
+ struct amdtp_cl_data *cl_data = privdata->cl_data;
+ int i, status;
+
+ for (i = 0; i < cl_data->num_hid_devices; i++) {
+ if (cl_data->sensor_sts[i] == SENSOR_ENABLED) {
+ privdata->mp2_ops->stop(privdata, cl_data->sensor_idx[i]);
+ status = amd_sfh_wait_for_response
+ (privdata, cl_data->sensor_idx[i], DISABLE_SENSOR);
+ if (status == 0)
+ cl_data->sensor_sts[i] = SENSOR_DISABLED;
+ dev_dbg(&privdata->pdev->dev, "stopping sid 0x%x (%s) status 0x%x\n",
+ cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
+ cl_data->sensor_sts[i]);
+ }
+ }
+
+ cancel_delayed_work_sync(&cl_data->work);
+ cancel_delayed_work_sync(&cl_data->work_buffer);
+ amdtp_hid_remove(cl_data);
+
+ return 0;
+}
+
+static int amd_sfh1_1_hid_client_init(struct amd_mp2_dev *privdata)
+{
+ struct amd_input_data *in_data = &privdata->in_data;
+ struct amdtp_cl_data *cl_data = privdata->cl_data;
+ struct amd_mp2_ops *mp2_ops = privdata->mp2_ops;
+ struct amd_mp2_sensor_info info;
+ struct request_list *req_list;
+ u32 feature_report_size;
+ u32 input_report_size;
+ struct device *dev;
+ int rc, i, status;
+ u8 cl_idx;
+
+ req_list = &cl_data->req_list;
+ dev = &privdata->pdev->dev;
+ amd_sfh1_1_set_desc_ops(mp2_ops);
+
+ cl_data->num_hid_devices = amd_sfh_get_sensor_num(privdata, &cl_data->sensor_idx[0]);
+ if (cl_data->num_hid_devices == 0)
+ return -ENODEV;
+ cl_data->is_any_sensor_enabled = false;
+
+ INIT_DELAYED_WORK(&cl_data->work, amd_sfh_work);
+ INIT_DELAYED_WORK(&cl_data->work_buffer, amd_sfh_work_buffer);
+ INIT_LIST_HEAD(&req_list->list);
+ cl_data->in_data = in_data;
+
+ for (i = 0; i < cl_data->num_hid_devices; i++) {
+ cl_data->sensor_sts[i] = SENSOR_DISABLED;
+ cl_data->sensor_requested_cnt[i] = 0;
+ cl_data->cur_hid_dev = i;
+ cl_idx = cl_data->sensor_idx[i];
+
+ cl_data->report_descr_sz[i] = mp2_ops->get_desc_sz(cl_idx, descr_size);
+ if (!cl_data->report_descr_sz[i]) {
+ rc = -EINVAL;
+ goto cleanup;
+ }
+ feature_report_size = mp2_ops->get_desc_sz(cl_idx, feature_size);
+ if (!feature_report_size) {
+ rc = -EINVAL;
+ goto cleanup;
+ }
+ input_report_size = mp2_ops->get_desc_sz(cl_idx, input_size);
+ if (!input_report_size) {
+ rc = -EINVAL;
+ goto cleanup;
+ }
+ cl_data->feature_report[i] = devm_kzalloc(dev, feature_report_size, GFP_KERNEL);
+ if (!cl_data->feature_report[i]) {
+ rc = -ENOMEM;
+ goto cleanup;
+ }
+ in_data->input_report[i] = devm_kzalloc(dev, input_report_size, GFP_KERNEL);
+ if (!in_data->input_report[i]) {
+ rc = -ENOMEM;
+ goto cleanup;
+ }
+
+ info.sensor_idx = cl_idx;
+
+ cl_data->report_descr[i] =
+ devm_kzalloc(dev, cl_data->report_descr_sz[i], GFP_KERNEL);
+ if (!cl_data->report_descr[i]) {
+ rc = -ENOMEM;
+ goto cleanup;
+ }
+ rc = mp2_ops->get_rep_desc(cl_idx, cl_data->report_descr[i]);
+ if (rc)
+ goto cleanup;
+
+ writel(0, privdata->mmio + AMD_P2C_MSG(0));
+ mp2_ops->start(privdata, info);
+ status = amd_sfh_wait_for_response
+ (privdata, cl_data->sensor_idx[i], ENABLE_SENSOR);
+
+ status = (status == 0) ? SENSOR_ENABLED : SENSOR_DISABLED;
+
+ if (status == SENSOR_ENABLED) {
+ cl_data->is_any_sensor_enabled = true;
+ cl_data->sensor_sts[i] = SENSOR_ENABLED;
+ rc = amdtp_hid_probe(i, cl_data);
+ if (rc) {
+ mp2_ops->stop(privdata, cl_data->sensor_idx[i]);
+ status = amd_sfh_wait_for_response
+ (privdata, cl_data->sensor_idx[i], DISABLE_SENSOR);
+ if (status == 0)
+ status = SENSOR_DISABLED;
+ if (status != SENSOR_ENABLED)
+ cl_data->sensor_sts[i] = SENSOR_DISABLED;
+ dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n",
+ cl_data->sensor_idx[i],
+ get_sensor_name(cl_data->sensor_idx[i]),
+ cl_data->sensor_sts[i]);
+ goto cleanup;
+ }
+ } else {
+ cl_data->sensor_sts[i] = SENSOR_DISABLED;
+ }
+ dev_dbg(dev, "sid 0x%x (%s) status 0x%x\n",
+ cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
+ cl_data->sensor_sts[i]);
+ }
+
+ if (!cl_data->is_any_sensor_enabled) {
+ dev_warn(dev, "Failed to discover, sensors not enabled is %d\n",
+ cl_data->is_any_sensor_enabled);
+ rc = -EOPNOTSUPP;
+ goto cleanup;
+ }
+
+ schedule_delayed_work(&cl_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
+ return 0;
+
+cleanup:
+ amd_sfh_hid_client_deinit(privdata);
+ for (i = 0; i < cl_data->num_hid_devices; i++) {
+ devm_kfree(dev, cl_data->feature_report[i]);
+ devm_kfree(dev, in_data->input_report[i]);
+ devm_kfree(dev, cl_data->report_descr[i]);
+ }
+ return rc;
+}
+
+static void amd_sfh_resume(struct amd_mp2_dev *mp2)
+{
+ struct amdtp_cl_data *cl_data = mp2->cl_data;
+ struct amd_mp2_sensor_info info;
+ int i, status;
+
+ for (i = 0; i < cl_data->num_hid_devices; i++) {
+ if (cl_data->sensor_sts[i] == SENSOR_DISABLED) {
+ info.sensor_idx = cl_data->sensor_idx[i];
+ mp2->mp2_ops->start(mp2, info);
+ status = amd_sfh_wait_for_response
+ (mp2, cl_data->sensor_idx[i], ENABLE_SENSOR);
+ if (status == 0)
+ status = SENSOR_ENABLED;
+ if (status == SENSOR_ENABLED)
+ cl_data->sensor_sts[i] = SENSOR_ENABLED;
+ dev_dbg(&mp2->pdev->dev, "resume sid 0x%x (%s) status 0x%x\n",
+ cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
+ cl_data->sensor_sts[i]);
+ }
+ }
+
+ schedule_delayed_work(&cl_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
+ amd_sfh_clear_intr(mp2);
+}
+
+static void amd_sfh_suspend(struct amd_mp2_dev *mp2)
+{
+ struct amdtp_cl_data *cl_data = mp2->cl_data;
+ int i, status;
+
+ for (i = 0; i < cl_data->num_hid_devices; i++) {
+ if (cl_data->sensor_idx[i] != HPD_IDX &&
+ cl_data->sensor_sts[i] == SENSOR_ENABLED) {
+ mp2->mp2_ops->stop(mp2, cl_data->sensor_idx[i]);
+ status = amd_sfh_wait_for_response
+ (mp2, cl_data->sensor_idx[i], DISABLE_SENSOR);
+ if (status == 0)
+ status = SENSOR_DISABLED;
+ if (status != SENSOR_ENABLED)
+ cl_data->sensor_sts[i] = SENSOR_DISABLED;
+ dev_dbg(&mp2->pdev->dev, "suspend sid 0x%x (%s) status 0x%x\n",
+ cl_data->sensor_idx[i], get_sensor_name(cl_data->sensor_idx[i]),
+ cl_data->sensor_sts[i]);
+ }
+ }
+
+ cancel_delayed_work_sync(&cl_data->work_buffer);
+ amd_sfh_clear_intr(mp2);
+}
+
+static void amd_mp2_pci_remove(void *privdata)
+{
+ struct amd_mp2_dev *mp2 = privdata;
+
+ amd_sfh_hid_client_deinit(privdata);
+ mp2->mp2_ops->stop_all(mp2);
+ pci_intx(mp2->pdev, false);
+ amd_sfh_clear_intr(mp2);
+}
+
+static void amd_sfh_set_ops(struct amd_mp2_dev *mp2)
+{
+ struct amd_mp2_ops *mp2_ops;
+
+ sfh_interface_init(mp2);
+ mp2_ops = mp2->mp2_ops;
+ mp2_ops->clear_intr = amd_sfh_clear_intr_v2,
+ mp2_ops->init_intr = amd_sfh_irq_init_v2,
+ mp2_ops->suspend = amd_sfh_suspend;
+ mp2_ops->resume = amd_sfh_resume;
+ mp2_ops->remove = amd_mp2_pci_remove;
+}
+
+int amd_sfh1_1_init(struct amd_mp2_dev *mp2)
+{
+ u32 phy_base = readl(mp2->mmio + AMD_C2P_MSG(22));
+ struct device *dev = &mp2->pdev->dev;
+ struct sfh_base_info binfo;
+ int rc;
+
+ phy_base <<= 21;
+ if (!devm_request_mem_region(dev, phy_base, 128 * 1024, "amd_sfh")) {
+ dev_dbg(dev, "can't reserve mmio registers\n");
+ return -ENOMEM;
+ }
+
+ mp2->vsbase = devm_ioremap(dev, phy_base, 128 * 1024);
+ if (!mp2->vsbase) {
+ dev_dbg(dev, "failed to remap vsbase\n");
+ return -ENOMEM;
+ }
+
+ /* Before accessing give time for SFH firmware for processing configuration */
+ msleep(5000);
+
+ memcpy_fromio(&binfo, mp2->vsbase, sizeof(struct sfh_base_info));
+ if (binfo.sbase.fw_info.fw_ver == 0 || binfo.sbase.s_list.sl.sensors == 0) {
+ dev_dbg(dev, "failed to get sensors\n");
+ return -EOPNOTSUPP;
+ }
+ dev_dbg(dev, "firmware version 0x%x\n", binfo.sbase.fw_info.fw_ver);
+
+ amd_sfh_set_ops(mp2);
+
+ rc = amd_sfh_irq_init(mp2);
+ if (rc) {
+ dev_err(dev, "amd_sfh_irq_init failed\n");
+ return rc;
+ }
+
+ rc = amd_sfh1_1_hid_client_init(mp2);
+ if (rc) {
+ dev_err(dev, "amd_sfh1_1_hid_client_init failed\n");
+ return rc;
+ }
+
+ return rc;
+}