Lines Matching refs:pp
1086 struct smu_private *pp; in smu_open() local
1089 pp = kzalloc(sizeof(struct smu_private), GFP_KERNEL); in smu_open()
1090 if (pp == 0) in smu_open()
1092 spin_lock_init(&pp->lock); in smu_open()
1093 pp->mode = smu_file_commands; in smu_open()
1094 init_waitqueue_head(&pp->wait); in smu_open()
1098 list_add(&pp->list, &smu_clist); in smu_open()
1100 file->private_data = pp; in smu_open()
1109 struct smu_private *pp = misc; in smu_user_cmd_done() local
1111 wake_up_all(&pp->wait); in smu_user_cmd_done()
1118 struct smu_private *pp = file->private_data; in smu_write() local
1123 if (pp->busy) in smu_write()
1128 pp->mode = smu_file_events; in smu_write()
1140 else if (pp->mode != smu_file_commands) in smu_write()
1145 spin_lock_irqsave(&pp->lock, flags); in smu_write()
1146 if (pp->busy) { in smu_write()
1147 spin_unlock_irqrestore(&pp->lock, flags); in smu_write()
1150 pp->busy = 1; in smu_write()
1151 pp->cmd.status = 1; in smu_write()
1152 spin_unlock_irqrestore(&pp->lock, flags); in smu_write()
1154 if (copy_from_user(pp->buffer, buf + sizeof(hdr), hdr.data_len)) { in smu_write()
1155 pp->busy = 0; in smu_write()
1159 pp->cmd.cmd = hdr.cmd; in smu_write()
1160 pp->cmd.data_len = hdr.data_len; in smu_write()
1161 pp->cmd.reply_len = SMU_MAX_DATA; in smu_write()
1162 pp->cmd.data_buf = pp->buffer; in smu_write()
1163 pp->cmd.reply_buf = pp->buffer; in smu_write()
1164 pp->cmd.done = smu_user_cmd_done; in smu_write()
1165 pp->cmd.misc = pp; in smu_write()
1166 rc = smu_queue_cmd(&pp->cmd); in smu_write()
1173 static ssize_t smu_read_command(struct file *file, struct smu_private *pp, in smu_read_command() argument
1181 if (!pp->busy) in smu_read_command()
1185 spin_lock_irqsave(&pp->lock, flags); in smu_read_command()
1186 if (pp->cmd.status == 1) { in smu_read_command()
1188 spin_unlock_irqrestore(&pp->lock, flags); in smu_read_command()
1191 add_wait_queue(&pp->wait, &wait); in smu_read_command()
1195 if (pp->cmd.status != 1) in smu_read_command()
1200 spin_unlock_irqrestore(&pp->lock, flags); in smu_read_command()
1202 spin_lock_irqsave(&pp->lock, flags); in smu_read_command()
1205 remove_wait_queue(&pp->wait, &wait); in smu_read_command()
1207 spin_unlock_irqrestore(&pp->lock, flags); in smu_read_command()
1210 if (pp->cmd.status != 0) in smu_read_command()
1211 pp->cmd.reply_len = 0; in smu_read_command()
1212 size = sizeof(hdr) + pp->cmd.reply_len; in smu_read_command()
1216 hdr.status = pp->cmd.status; in smu_read_command()
1217 hdr.reply_len = pp->cmd.reply_len; in smu_read_command()
1221 if (size && copy_to_user(buf + sizeof(hdr), pp->buffer, size)) in smu_read_command()
1223 pp->busy = 0; in smu_read_command()
1229 static ssize_t smu_read_events(struct file *file, struct smu_private *pp, in smu_read_events() argument
1241 struct smu_private *pp = file->private_data; in smu_read() local
1243 if (pp->mode == smu_file_commands) in smu_read()
1244 return smu_read_command(file, pp, buf, count); in smu_read()
1245 if (pp->mode == smu_file_events) in smu_read()
1246 return smu_read_events(file, pp, buf, count); in smu_read()
1253 struct smu_private *pp = file->private_data; in smu_fpoll() local
1257 if (pp == 0) in smu_fpoll()
1260 if (pp->mode == smu_file_commands) { in smu_fpoll()
1261 poll_wait(file, &pp->wait, wait); in smu_fpoll()
1263 spin_lock_irqsave(&pp->lock, flags); in smu_fpoll()
1264 if (pp->busy && pp->cmd.status != 1) in smu_fpoll()
1266 spin_unlock_irqrestore(&pp->lock, flags); in smu_fpoll()
1268 if (pp->mode == smu_file_events) { in smu_fpoll()
1276 struct smu_private *pp = file->private_data; in smu_release() local
1280 if (pp == 0) in smu_release()
1286 spin_lock_irqsave(&pp->lock, flags); in smu_release()
1287 pp->mode = smu_file_closing; in smu_release()
1288 busy = pp->busy; in smu_release()
1291 if (busy && pp->cmd.status == 1) { in smu_release()
1294 add_wait_queue(&pp->wait, &wait); in smu_release()
1297 if (pp->cmd.status != 1) in smu_release()
1299 spin_unlock_irqrestore(&pp->lock, flags); in smu_release()
1301 spin_lock_irqsave(&pp->lock, flags); in smu_release()
1304 remove_wait_queue(&pp->wait, &wait); in smu_release()
1306 spin_unlock_irqrestore(&pp->lock, flags); in smu_release()
1309 list_del(&pp->list); in smu_release()
1311 kfree(pp); in smu_release()