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-rw-r--r--drivers/media/common/siano/smsdvb-debugfs.c437
1 files changed, 437 insertions, 0 deletions
diff --git a/drivers/media/common/siano/smsdvb-debugfs.c b/drivers/media/common/siano/smsdvb-debugfs.c
new file mode 100644
index 0000000000..e0beefd80d
--- /dev/null
+++ b/drivers/media/common/siano/smsdvb-debugfs.c
@@ -0,0 +1,437 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Copyright(c) 2013 Mauro Carvalho Chehab
+
+#include "smscoreapi.h"
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/debugfs.h>
+#include <linux/spinlock.h>
+#include <linux/usb.h>
+
+#include <media/dmxdev.h>
+#include <media/dvbdev.h>
+#include <media/dvb_demux.h>
+#include <media/dvb_frontend.h>
+
+#include "smsdvb.h"
+
+static struct dentry *smsdvb_debugfs_usb_root;
+
+struct smsdvb_debugfs {
+ struct kref refcount;
+ spinlock_t lock;
+
+ char stats_data[PAGE_SIZE];
+ unsigned stats_count;
+ bool stats_was_read;
+
+ wait_queue_head_t stats_queue;
+};
+
+static void smsdvb_print_dvb_stats(struct smsdvb_debugfs *debug_data,
+ struct sms_stats *p)
+{
+ int n = 0;
+ char *buf;
+
+ spin_lock(&debug_data->lock);
+ if (debug_data->stats_count) {
+ spin_unlock(&debug_data->lock);
+ return;
+ }
+
+ buf = debug_data->stats_data;
+
+ n += sysfs_emit_at(buf, n, "is_rf_locked = %d\n", p->is_rf_locked);
+ n += sysfs_emit_at(buf, n, "is_demod_locked = %d\n", p->is_demod_locked);
+ n += sysfs_emit_at(buf, n, "is_external_lna_on = %d\n", p->is_external_lna_on);
+ n += sysfs_emit_at(buf, n, "SNR = %d\n", p->SNR);
+ n += sysfs_emit_at(buf, n, "ber = %d\n", p->ber);
+ n += sysfs_emit_at(buf, n, "FIB_CRC = %d\n", p->FIB_CRC);
+ n += sysfs_emit_at(buf, n, "ts_per = %d\n", p->ts_per);
+ n += sysfs_emit_at(buf, n, "MFER = %d\n", p->MFER);
+ n += sysfs_emit_at(buf, n, "RSSI = %d\n", p->RSSI);
+ n += sysfs_emit_at(buf, n, "in_band_pwr = %d\n", p->in_band_pwr);
+ n += sysfs_emit_at(buf, n, "carrier_offset = %d\n", p->carrier_offset);
+ n += sysfs_emit_at(buf, n, "modem_state = %d\n", p->modem_state);
+ n += sysfs_emit_at(buf, n, "frequency = %d\n", p->frequency);
+ n += sysfs_emit_at(buf, n, "bandwidth = %d\n", p->bandwidth);
+ n += sysfs_emit_at(buf, n, "transmission_mode = %d\n", p->transmission_mode);
+ n += sysfs_emit_at(buf, n, "modem_state = %d\n", p->modem_state);
+ n += sysfs_emit_at(buf, n, "guard_interval = %d\n", p->guard_interval);
+ n += sysfs_emit_at(buf, n, "code_rate = %d\n", p->code_rate);
+ n += sysfs_emit_at(buf, n, "lp_code_rate = %d\n", p->lp_code_rate);
+ n += sysfs_emit_at(buf, n, "hierarchy = %d\n", p->hierarchy);
+ n += sysfs_emit_at(buf, n, "constellation = %d\n", p->constellation);
+ n += sysfs_emit_at(buf, n, "burst_size = %d\n", p->burst_size);
+ n += sysfs_emit_at(buf, n, "burst_duration = %d\n", p->burst_duration);
+ n += sysfs_emit_at(buf, n, "burst_cycle_time = %d\n", p->burst_cycle_time);
+ n += sysfs_emit_at(buf, n, "calc_burst_cycle_time = %d\n", p->calc_burst_cycle_time);
+ n += sysfs_emit_at(buf, n, "num_of_rows = %d\n", p->num_of_rows);
+ n += sysfs_emit_at(buf, n, "num_of_padd_cols = %d\n", p->num_of_padd_cols);
+ n += sysfs_emit_at(buf, n, "num_of_punct_cols = %d\n", p->num_of_punct_cols);
+ n += sysfs_emit_at(buf, n, "error_ts_packets = %d\n", p->error_ts_packets);
+ n += sysfs_emit_at(buf, n, "total_ts_packets = %d\n", p->total_ts_packets);
+ n += sysfs_emit_at(buf, n, "num_of_valid_mpe_tlbs = %d\n", p->num_of_valid_mpe_tlbs);
+ n += sysfs_emit_at(buf, n, "num_of_invalid_mpe_tlbs = %d\n", p->num_of_invalid_mpe_tlbs);
+ n += sysfs_emit_at(buf, n, "num_of_corrected_mpe_tlbs = %d\n",
+ p->num_of_corrected_mpe_tlbs);
+ n += sysfs_emit_at(buf, n, "ber_error_count = %d\n", p->ber_error_count);
+ n += sysfs_emit_at(buf, n, "ber_bit_count = %d\n", p->ber_bit_count);
+ n += sysfs_emit_at(buf, n, "sms_to_host_tx_errors = %d\n", p->sms_to_host_tx_errors);
+ n += sysfs_emit_at(buf, n, "pre_ber = %d\n", p->pre_ber);
+ n += sysfs_emit_at(buf, n, "cell_id = %d\n", p->cell_id);
+ n += sysfs_emit_at(buf, n, "dvbh_srv_ind_hp = %d\n", p->dvbh_srv_ind_hp);
+ n += sysfs_emit_at(buf, n, "dvbh_srv_ind_lp = %d\n", p->dvbh_srv_ind_lp);
+ n += sysfs_emit_at(buf, n, "num_mpe_received = %d\n", p->num_mpe_received);
+
+ debug_data->stats_count = n;
+ spin_unlock(&debug_data->lock);
+ wake_up(&debug_data->stats_queue);
+}
+
+static void smsdvb_print_isdb_stats(struct smsdvb_debugfs *debug_data,
+ struct sms_isdbt_stats *p)
+{
+ int i, n = 0;
+ char *buf;
+
+ spin_lock(&debug_data->lock);
+ if (debug_data->stats_count) {
+ spin_unlock(&debug_data->lock);
+ return;
+ }
+
+ buf = debug_data->stats_data;
+
+ n += sysfs_emit_at(buf, n, "statistics_type = %d\t", p->statistics_type);
+ n += sysfs_emit_at(buf, n, "full_size = %d\n", p->full_size);
+
+ n += sysfs_emit_at(buf, n, "is_rf_locked = %d\t\t", p->is_rf_locked);
+ n += sysfs_emit_at(buf, n, "is_demod_locked = %d\t", p->is_demod_locked);
+ n += sysfs_emit_at(buf, n, "is_external_lna_on = %d\n", p->is_external_lna_on);
+ n += sysfs_emit_at(buf, n, "SNR = %d dB\t\t", p->SNR);
+ n += sysfs_emit_at(buf, n, "RSSI = %d dBm\t\t", p->RSSI);
+ n += sysfs_emit_at(buf, n, "in_band_pwr = %d dBm\n", p->in_band_pwr);
+ n += sysfs_emit_at(buf, n, "carrier_offset = %d\t", p->carrier_offset);
+ n += sysfs_emit_at(buf, n, "bandwidth = %d\t\t", p->bandwidth);
+ n += sysfs_emit_at(buf, n, "frequency = %d Hz\n", p->frequency);
+ n += sysfs_emit_at(buf, n, "transmission_mode = %d\t", p->transmission_mode);
+ n += sysfs_emit_at(buf, n, "modem_state = %d\t\t", p->modem_state);
+ n += sysfs_emit_at(buf, n, "guard_interval = %d\n", p->guard_interval);
+ n += sysfs_emit_at(buf, n, "system_type = %d\t\t", p->system_type);
+ n += sysfs_emit_at(buf, n, "partial_reception = %d\t", p->partial_reception);
+ n += sysfs_emit_at(buf, n, "num_of_layers = %d\n", p->num_of_layers);
+ n += sysfs_emit_at(buf, n, "sms_to_host_tx_errors = %d\n", p->sms_to_host_tx_errors);
+
+ for (i = 0; i < 3; i++) {
+ if (p->layer_info[i].number_of_segments < 1 ||
+ p->layer_info[i].number_of_segments > 13)
+ continue;
+
+ n += sysfs_emit_at(buf, n, "\nLayer %d\n", i);
+ n += sysfs_emit_at(buf, n, "\tcode_rate = %d\t", p->layer_info[i].code_rate);
+ n += sysfs_emit_at(buf, n, "constellation = %d\n", p->layer_info[i].constellation);
+ n += sysfs_emit_at(buf, n, "\tber = %-5d\t", p->layer_info[i].ber);
+ n += sysfs_emit_at(buf, n, "\tber_error_count = %-5d\t",
+ p->layer_info[i].ber_error_count);
+ n += sysfs_emit_at(buf, n, "ber_bit_count = %-5d\n",
+ p->layer_info[i].ber_bit_count);
+ n += sysfs_emit_at(buf, n, "\tpre_ber = %-5d\t", p->layer_info[i].pre_ber);
+ n += sysfs_emit_at(buf, n, "\tts_per = %-5d\n", p->layer_info[i].ts_per);
+ n += sysfs_emit_at(buf, n, "\terror_ts_packets = %-5d\t",
+ p->layer_info[i].error_ts_packets);
+ n += sysfs_emit_at(buf, n, "total_ts_packets = %-5d\t",
+ p->layer_info[i].total_ts_packets);
+ n += sysfs_emit_at(buf, n, "ti_ldepth_i = %d\n", p->layer_info[i].ti_ldepth_i);
+ n += sysfs_emit_at(buf, n, "\tnumber_of_segments = %d\t",
+ p->layer_info[i].number_of_segments);
+ n += sysfs_emit_at(buf, n, "tmcc_errors = %d\n", p->layer_info[i].tmcc_errors);
+ }
+
+ debug_data->stats_count = n;
+ spin_unlock(&debug_data->lock);
+ wake_up(&debug_data->stats_queue);
+}
+
+static void smsdvb_print_isdb_stats_ex(struct smsdvb_debugfs *debug_data,
+ struct sms_isdbt_stats_ex *p)
+{
+ int i, n = 0;
+ char *buf;
+
+ spin_lock(&debug_data->lock);
+ if (debug_data->stats_count) {
+ spin_unlock(&debug_data->lock);
+ return;
+ }
+
+ buf = debug_data->stats_data;
+
+ n += sysfs_emit_at(buf, n, "statistics_type = %d\t", p->statistics_type);
+ n += sysfs_emit_at(buf, n, "full_size = %d\n", p->full_size);
+
+ n += sysfs_emit_at(buf, n, "is_rf_locked = %d\t\t", p->is_rf_locked);
+ n += sysfs_emit_at(buf, n, "is_demod_locked = %d\t", p->is_demod_locked);
+ n += sysfs_emit_at(buf, n, "is_external_lna_on = %d\n", p->is_external_lna_on);
+ n += sysfs_emit_at(buf, n, "SNR = %d dB\t\t", p->SNR);
+ n += sysfs_emit_at(buf, n, "RSSI = %d dBm\t\t", p->RSSI);
+ n += sysfs_emit_at(buf, n, "in_band_pwr = %d dBm\n", p->in_band_pwr);
+ n += sysfs_emit_at(buf, n, "carrier_offset = %d\t", p->carrier_offset);
+ n += sysfs_emit_at(buf, n, "bandwidth = %d\t\t", p->bandwidth);
+ n += sysfs_emit_at(buf, n, "frequency = %d Hz\n", p->frequency);
+ n += sysfs_emit_at(buf, n, "transmission_mode = %d\t", p->transmission_mode);
+ n += sysfs_emit_at(buf, n, "modem_state = %d\t\t", p->modem_state);
+ n += sysfs_emit_at(buf, n, "guard_interval = %d\n", p->guard_interval);
+ n += sysfs_emit_at(buf, n, "system_type = %d\t\t", p->system_type);
+ n += sysfs_emit_at(buf, n, "partial_reception = %d\t", p->partial_reception);
+ n += sysfs_emit_at(buf, n, "num_of_layers = %d\n", p->num_of_layers);
+ n += sysfs_emit_at(buf, n, "segment_number = %d\t", p->segment_number);
+ n += sysfs_emit_at(buf, n, "tune_bw = %d\n", p->tune_bw);
+
+ for (i = 0; i < 3; i++) {
+ if (p->layer_info[i].number_of_segments < 1 ||
+ p->layer_info[i].number_of_segments > 13)
+ continue;
+
+ n += sysfs_emit_at(buf, n, "\nLayer %d\n", i);
+ n += sysfs_emit_at(buf, n, "\tcode_rate = %d\t", p->layer_info[i].code_rate);
+ n += sysfs_emit_at(buf, n, "constellation = %d\n", p->layer_info[i].constellation);
+ n += sysfs_emit_at(buf, n, "\tber = %-5d\t", p->layer_info[i].ber);
+ n += sysfs_emit_at(buf, n, "\tber_error_count = %-5d\t",
+ p->layer_info[i].ber_error_count);
+ n += sysfs_emit_at(buf, n, "ber_bit_count = %-5d\n",
+ p->layer_info[i].ber_bit_count);
+ n += sysfs_emit_at(buf, n, "\tpre_ber = %-5d\t", p->layer_info[i].pre_ber);
+ n += sysfs_emit_at(buf, n, "\tts_per = %-5d\n", p->layer_info[i].ts_per);
+ n += sysfs_emit_at(buf, n, "\terror_ts_packets = %-5d\t",
+ p->layer_info[i].error_ts_packets);
+ n += sysfs_emit_at(buf, n, "total_ts_packets = %-5d\t",
+ p->layer_info[i].total_ts_packets);
+ n += sysfs_emit_at(buf, n, "ti_ldepth_i = %d\n", p->layer_info[i].ti_ldepth_i);
+ n += sysfs_emit_at(buf, n, "\tnumber_of_segments = %d\t",
+ p->layer_info[i].number_of_segments);
+ n += sysfs_emit_at(buf, n, "tmcc_errors = %d\n", p->layer_info[i].tmcc_errors);
+ }
+
+
+ debug_data->stats_count = n;
+ spin_unlock(&debug_data->lock);
+
+ wake_up(&debug_data->stats_queue);
+}
+
+static int smsdvb_stats_open(struct inode *inode, struct file *file)
+{
+ struct smsdvb_client_t *client = inode->i_private;
+ struct smsdvb_debugfs *debug_data = client->debug_data;
+
+ kref_get(&debug_data->refcount);
+
+ spin_lock(&debug_data->lock);
+ debug_data->stats_count = 0;
+ debug_data->stats_was_read = false;
+ spin_unlock(&debug_data->lock);
+
+ file->private_data = debug_data;
+
+ return 0;
+}
+
+static void smsdvb_debugfs_data_release(struct kref *ref)
+{
+ struct smsdvb_debugfs *debug_data;
+
+ debug_data = container_of(ref, struct smsdvb_debugfs, refcount);
+ kfree(debug_data);
+}
+
+static int smsdvb_stats_wait_read(struct smsdvb_debugfs *debug_data)
+{
+ int rc = 1;
+
+ spin_lock(&debug_data->lock);
+
+ if (debug_data->stats_was_read)
+ goto exit;
+
+ rc = debug_data->stats_count;
+
+exit:
+ spin_unlock(&debug_data->lock);
+ return rc;
+}
+
+static __poll_t smsdvb_stats_poll(struct file *file, poll_table *wait)
+{
+ struct smsdvb_debugfs *debug_data = file->private_data;
+ int rc;
+
+ kref_get(&debug_data->refcount);
+
+ poll_wait(file, &debug_data->stats_queue, wait);
+
+ rc = smsdvb_stats_wait_read(debug_data);
+ kref_put(&debug_data->refcount, smsdvb_debugfs_data_release);
+
+ return rc > 0 ? EPOLLIN | EPOLLRDNORM : 0;
+}
+
+static ssize_t smsdvb_stats_read(struct file *file, char __user *user_buf,
+ size_t nbytes, loff_t *ppos)
+{
+ int rc = 0, len;
+ struct smsdvb_debugfs *debug_data = file->private_data;
+
+ kref_get(&debug_data->refcount);
+
+ if (file->f_flags & O_NONBLOCK) {
+ rc = smsdvb_stats_wait_read(debug_data);
+ if (!rc) {
+ rc = -EWOULDBLOCK;
+ goto ret;
+ }
+ } else {
+ rc = wait_event_interruptible(debug_data->stats_queue,
+ smsdvb_stats_wait_read(debug_data));
+ if (rc < 0)
+ goto ret;
+ }
+
+ if (debug_data->stats_was_read) {
+ rc = 0; /* EOF */
+ goto ret;
+ }
+
+ len = debug_data->stats_count - *ppos;
+ if (len >= 0)
+ rc = simple_read_from_buffer(user_buf, nbytes, ppos,
+ debug_data->stats_data, len);
+ else
+ rc = 0;
+
+ if (*ppos >= debug_data->stats_count) {
+ spin_lock(&debug_data->lock);
+ debug_data->stats_was_read = true;
+ spin_unlock(&debug_data->lock);
+ }
+ret:
+ kref_put(&debug_data->refcount, smsdvb_debugfs_data_release);
+ return rc;
+}
+
+static int smsdvb_stats_release(struct inode *inode, struct file *file)
+{
+ struct smsdvb_debugfs *debug_data = file->private_data;
+
+ spin_lock(&debug_data->lock);
+ debug_data->stats_was_read = true; /* return EOF to read() */
+ spin_unlock(&debug_data->lock);
+ wake_up_interruptible_sync(&debug_data->stats_queue);
+
+ kref_put(&debug_data->refcount, smsdvb_debugfs_data_release);
+ file->private_data = NULL;
+
+ return 0;
+}
+
+static const struct file_operations debugfs_stats_ops = {
+ .open = smsdvb_stats_open,
+ .poll = smsdvb_stats_poll,
+ .read = smsdvb_stats_read,
+ .release = smsdvb_stats_release,
+ .llseek = generic_file_llseek,
+};
+
+/*
+ * Functions used by smsdvb, in order to create the interfaces
+ */
+
+int smsdvb_debugfs_create(struct smsdvb_client_t *client)
+{
+ struct smscore_device_t *coredev = client->coredev;
+ struct dentry *d;
+ struct smsdvb_debugfs *debug_data;
+
+ if (!smsdvb_debugfs_usb_root || !coredev->is_usb_device)
+ return -ENODEV;
+
+ client->debugfs = debugfs_create_dir(coredev->devpath,
+ smsdvb_debugfs_usb_root);
+ if (IS_ERR_OR_NULL(client->debugfs)) {
+ pr_info("Unable to create debugfs %s directory.\n",
+ coredev->devpath);
+ return -ENODEV;
+ }
+
+ d = debugfs_create_file("stats", S_IRUGO | S_IWUSR, client->debugfs,
+ client, &debugfs_stats_ops);
+ if (!d) {
+ debugfs_remove(client->debugfs);
+ return -ENOMEM;
+ }
+
+ debug_data = kzalloc(sizeof(*client->debug_data), GFP_KERNEL);
+ if (!debug_data)
+ return -ENOMEM;
+
+ client->debug_data = debug_data;
+ client->prt_dvb_stats = smsdvb_print_dvb_stats;
+ client->prt_isdb_stats = smsdvb_print_isdb_stats;
+ client->prt_isdb_stats_ex = smsdvb_print_isdb_stats_ex;
+
+ init_waitqueue_head(&debug_data->stats_queue);
+ spin_lock_init(&debug_data->lock);
+ kref_init(&debug_data->refcount);
+
+ return 0;
+}
+
+void smsdvb_debugfs_release(struct smsdvb_client_t *client)
+{
+ if (!client->debugfs)
+ return;
+
+ client->prt_dvb_stats = NULL;
+ client->prt_isdb_stats = NULL;
+ client->prt_isdb_stats_ex = NULL;
+
+ debugfs_remove_recursive(client->debugfs);
+ kref_put(&client->debug_data->refcount, smsdvb_debugfs_data_release);
+
+ client->debug_data = NULL;
+ client->debugfs = NULL;
+}
+
+void smsdvb_debugfs_register(void)
+{
+ struct dentry *d;
+
+ /*
+ * FIXME: This was written to debug Siano USB devices. So, it creates
+ * the debugfs node under <debugfs>/usb.
+ * A similar logic would be needed for Siano sdio devices, but, in that
+ * case, usb_debug_root is not a good choice.
+ *
+ * Perhaps the right fix here would be to create another sysfs root
+ * node for sdio-based boards, but this may need some logic at sdio
+ * subsystem.
+ */
+ d = debugfs_create_dir("smsdvb", usb_debug_root);
+ if (IS_ERR_OR_NULL(d)) {
+ pr_err("Couldn't create sysfs node for smsdvb\n");
+ return;
+ }
+ smsdvb_debugfs_usb_root = d;
+}
+
+void smsdvb_debugfs_unregister(void)
+{
+ if (!smsdvb_debugfs_usb_root)
+ return;
+ debugfs_remove_recursive(smsdvb_debugfs_usb_root);
+ smsdvb_debugfs_usb_root = NULL;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 17:25:08 +0000