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9#include <linux/dma-mapping.h>
10#include <linux/hid.h>
11#include <linux/list.h>
12#include <linux/slab.h>
13#include <linux/workqueue.h>
14#include <linux/errno.h>
15
16#include "hid_descriptor/amd_sfh_hid_desc.h"
17#include "amd_sfh_pcie.h"
18#include "amd_sfh_hid.h"
19
20
21struct request_list {
22 struct hid_device *hid;
23 struct list_head list;
24 u8 report_id;
25 u8 sensor_idx;
26 u8 report_type;
27 u8 current_index;
28};
29
30static struct request_list req_list;
31
32void amd_sfh_set_report(struct hid_device *hid, int report_id,
33 int report_type)
34{
35 struct amdtp_hid_data *hid_data = hid->driver_data;
36 struct amdtp_cl_data *cli_data = hid_data->cli_data;
37 int i;
38
39 for (i = 0; i < cli_data->num_hid_devices; i++) {
40 if (cli_data->hid_sensor_hubs[i] == hid) {
41 cli_data->cur_hid_dev = i;
42 break;
43 }
44 }
45 amdtp_hid_wakeup(hid);
46}
47
48int amd_sfh_get_report(struct hid_device *hid, int report_id, int report_type)
49{
50 struct amdtp_hid_data *hid_data = hid->driver_data;
51 struct amdtp_cl_data *cli_data = hid_data->cli_data;
52 int i;
53
54 for (i = 0; i < cli_data->num_hid_devices; i++) {
55 if (cli_data->hid_sensor_hubs[i] == hid) {
56 struct request_list *new = kzalloc(sizeof(*new), GFP_KERNEL);
57
58 if (!new)
59 return -ENOMEM;
60
61 new->current_index = i;
62 new->sensor_idx = cli_data->sensor_idx[i];
63 new->hid = hid;
64 new->report_type = report_type;
65 new->report_id = report_id;
66 cli_data->report_id[i] = report_id;
67 cli_data->request_done[i] = false;
68 list_add(&new->list, &req_list.list);
69 break;
70 }
71 }
72 schedule_delayed_work(&cli_data->work, 0);
73 return 0;
74}
75
76static void amd_sfh_work(struct work_struct *work)
77{
78 struct amdtp_cl_data *cli_data = container_of(work, struct amdtp_cl_data, work.work);
79 struct amd_input_data *in_data = cli_data->in_data;
80 struct request_list *req_node;
81 u8 current_index, sensor_index;
82 u8 report_id, node_type;
83 u8 report_size = 0;
84
85 req_node = list_last_entry(&req_list.list, struct request_list, list);
86 list_del(&req_node->list);
87 current_index = req_node->current_index;
88 sensor_index = req_node->sensor_idx;
89 report_id = req_node->report_id;
90 node_type = req_node->report_type;
91 kfree(req_node);
92
93 if (node_type == HID_FEATURE_REPORT) {
94 report_size = get_feature_report(sensor_index, report_id,
95 cli_data->feature_report[current_index]);
96 if (report_size)
97 hid_input_report(cli_data->hid_sensor_hubs[current_index],
98 cli_data->report_type[current_index],
99 cli_data->feature_report[current_index], report_size, 0);
100 else
101 pr_err("AMDSFH: Invalid report size\n");
102
103 } else if (node_type == HID_INPUT_REPORT) {
104 report_size = get_input_report(current_index, sensor_index, report_id, in_data);
105 if (report_size)
106 hid_input_report(cli_data->hid_sensor_hubs[current_index],
107 cli_data->report_type[current_index],
108 in_data->input_report[current_index], report_size, 0);
109 else
110 pr_err("AMDSFH: Invalid report size\n");
111 }
112 cli_data->cur_hid_dev = current_index;
113 cli_data->sensor_requested_cnt[current_index] = 0;
114 amdtp_hid_wakeup(cli_data->hid_sensor_hubs[current_index]);
115}
116
117static void amd_sfh_work_buffer(struct work_struct *work)
118{
119 struct amdtp_cl_data *cli_data = container_of(work, struct amdtp_cl_data, work_buffer.work);
120 struct amd_input_data *in_data = cli_data->in_data;
121 u8 report_size;
122 int i;
123
124 for (i = 0; i < cli_data->num_hid_devices; i++) {
125 if (cli_data->sensor_sts[i] == SENSOR_ENABLED) {
126 report_size = get_input_report
127 (i, cli_data->sensor_idx[i], cli_data->report_id[i], in_data);
128 hid_input_report(cli_data->hid_sensor_hubs[i], HID_INPUT_REPORT,
129 in_data->input_report[i], report_size, 0);
130 }
131 }
132 schedule_delayed_work(&cli_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
133}
134
135u32 amd_sfh_wait_for_response(struct amd_mp2_dev *mp2, u8 sid, u32 sensor_sts)
136{
137 if (mp2->mp2_ops->response)
138 sensor_sts = mp2->mp2_ops->response(mp2, sid, sensor_sts);
139
140 return sensor_sts;
141}
142
143int amd_sfh_hid_client_init(struct amd_mp2_dev *privdata)
144{
145 struct amd_input_data *in_data = &privdata->in_data;
146 struct amdtp_cl_data *cl_data = privdata->cl_data;
147 struct amd_mp2_sensor_info info;
148 struct device *dev;
149 u32 feature_report_size;
150 u32 input_report_size;
151 int rc, i, status;
152 u8 cl_idx;
153
154 dev = &privdata->pdev->dev;
155
156 cl_data->num_hid_devices = amd_mp2_get_sensor_num(privdata, &cl_data->sensor_idx[0]);
157
158 INIT_DELAYED_WORK(&cl_data->work, amd_sfh_work);
159 INIT_DELAYED_WORK(&cl_data->work_buffer, amd_sfh_work_buffer);
160 INIT_LIST_HEAD(&req_list.list);
161 cl_data->in_data = in_data;
162
163 for (i = 0; i < cl_data->num_hid_devices; i++) {
164 in_data->sensor_virt_addr[i] = dma_alloc_coherent(dev, sizeof(int) * 8,
165 &cl_data->sensor_dma_addr[i],
166 GFP_KERNEL);
167 cl_data->sensor_sts[i] = SENSOR_DISABLED;
168 cl_data->sensor_requested_cnt[i] = 0;
169 cl_data->cur_hid_dev = i;
170 cl_idx = cl_data->sensor_idx[i];
171 cl_data->report_descr_sz[i] = get_descr_sz(cl_idx, descr_size);
172 if (!cl_data->report_descr_sz[i]) {
173 rc = -EINVAL;
174 goto cleanup;
175 }
176 feature_report_size = get_descr_sz(cl_idx, feature_size);
177 if (!feature_report_size) {
178 rc = -EINVAL;
179 goto cleanup;
180 }
181 input_report_size = get_descr_sz(cl_idx, input_size);
182 if (!input_report_size) {
183 rc = -EINVAL;
184 goto cleanup;
185 }
186 cl_data->feature_report[i] = devm_kzalloc(dev, feature_report_size, GFP_KERNEL);
187 if (!cl_data->feature_report[i]) {
188 rc = -ENOMEM;
189 goto cleanup;
190 }
191 in_data->input_report[i] = devm_kzalloc(dev, input_report_size, GFP_KERNEL);
192 if (!in_data->input_report[i]) {
193 rc = -ENOMEM;
194 goto cleanup;
195 }
196 info.period = AMD_SFH_IDLE_LOOP;
197 info.sensor_idx = cl_idx;
198 info.dma_address = cl_data->sensor_dma_addr[i];
199
200 cl_data->report_descr[i] =
201 devm_kzalloc(dev, cl_data->report_descr_sz[i], GFP_KERNEL);
202 if (!cl_data->report_descr[i]) {
203 rc = -ENOMEM;
204 goto cleanup;
205 }
206 rc = get_report_descriptor(cl_idx, cl_data->report_descr[i]);
207 if (rc)
208 return rc;
209 privdata->mp2_ops->start(privdata, info);
210 status = amd_sfh_wait_for_response
211 (privdata, cl_data->sensor_idx[i], SENSOR_ENABLED);
212 if (status == SENSOR_ENABLED) {
213 cl_data->sensor_sts[i] = SENSOR_ENABLED;
214 rc = amdtp_hid_probe(cl_data->cur_hid_dev, cl_data);
215 if (rc) {
216 privdata->mp2_ops->stop(privdata, cl_data->sensor_idx[i]);
217 status = amd_sfh_wait_for_response
218 (privdata, cl_data->sensor_idx[i], SENSOR_DISABLED);
219 if (status != SENSOR_ENABLED)
220 cl_data->sensor_sts[i] = SENSOR_DISABLED;
221 dev_dbg(dev, "sid 0x%x status 0x%x\n",
222 cl_data->sensor_idx[i], cl_data->sensor_sts[i]);
223 goto cleanup;
224 }
225 }
226 dev_dbg(dev, "sid 0x%x status 0x%x\n",
227 cl_data->sensor_idx[i], cl_data->sensor_sts[i]);
228 }
229 schedule_delayed_work(&cl_data->work_buffer, msecs_to_jiffies(AMD_SFH_IDLE_LOOP));
230 return 0;
231
232cleanup:
233 for (i = 0; i < cl_data->num_hid_devices; i++) {
234 if (in_data->sensor_virt_addr[i]) {
235 dma_free_coherent(&privdata->pdev->dev, 8 * sizeof(int),
236 in_data->sensor_virt_addr[i],
237 cl_data->sensor_dma_addr[i]);
238 }
239 devm_kfree(dev, cl_data->feature_report[i]);
240 devm_kfree(dev, in_data->input_report[i]);
241 devm_kfree(dev, cl_data->report_descr[i]);
242 }
243 return rc;
244}
245
246int amd_sfh_hid_client_deinit(struct amd_mp2_dev *privdata)
247{
248 struct amdtp_cl_data *cl_data = privdata->cl_data;
249 struct amd_input_data *in_data = cl_data->in_data;
250 int i, status;
251
252 for (i = 0; i < cl_data->num_hid_devices; i++) {
253 if (cl_data->sensor_sts[i] == SENSOR_ENABLED) {
254 privdata->mp2_ops->stop(privdata, cl_data->sensor_idx[i]);
255 status = amd_sfh_wait_for_response
256 (privdata, cl_data->sensor_idx[i], SENSOR_DISABLED);
257 if (status != SENSOR_ENABLED)
258 cl_data->sensor_sts[i] = SENSOR_DISABLED;
259 dev_dbg(&privdata->pdev->dev, "stopping sid 0x%x status 0x%x\n",
260 cl_data->sensor_idx[i], cl_data->sensor_sts[i]);
261 }
262 }
263
264 cancel_delayed_work_sync(&cl_data->work);
265 cancel_delayed_work_sync(&cl_data->work_buffer);
266 amdtp_hid_remove(cl_data);
267
268 for (i = 0; i < cl_data->num_hid_devices; i++) {
269 if (in_data->sensor_virt_addr[i]) {
270 dma_free_coherent(&privdata->pdev->dev, 8 * sizeof(int),
271 in_data->sensor_virt_addr[i],
272 cl_data->sensor_dma_addr[i]);
273 }
274 }
275 return 0;
276}
277
