[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/ptp/ptp_sysfs.c b/src/kernel/linux/v4.14/drivers/ptp/ptp_sysfs.c
new file mode 100644
index 0000000..48401df
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/ptp/ptp_sysfs.c
@@ -0,0 +1,315 @@
+/*
+ * PTP 1588 clock support - sysfs interface.
+ *
+ * Copyright (C) 2010 OMICRON electronics GmbH
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/capability.h>
+#include <linux/slab.h>
+
+#include "ptp_private.h"
+
+static ssize_t clock_name_show(struct device *dev,
+ struct device_attribute *attr, char *page)
+{
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ return snprintf(page, PAGE_SIZE-1, "%s\n", ptp->info->name);
+}
+static DEVICE_ATTR_RO(clock_name);
+
+#define PTP_SHOW_INT(name, var) \
+static ssize_t var##_show(struct device *dev, \
+ struct device_attribute *attr, char *page) \
+{ \
+ struct ptp_clock *ptp = dev_get_drvdata(dev); \
+ return snprintf(page, PAGE_SIZE-1, "%d\n", ptp->info->var); \
+} \
+static DEVICE_ATTR(name, 0444, var##_show, NULL);
+
+PTP_SHOW_INT(max_adjustment, max_adj);
+PTP_SHOW_INT(n_alarms, n_alarm);
+PTP_SHOW_INT(n_external_timestamps, n_ext_ts);
+PTP_SHOW_INT(n_periodic_outputs, n_per_out);
+PTP_SHOW_INT(n_programmable_pins, n_pins);
+PTP_SHOW_INT(pps_available, pps);
+
+static ssize_t extts_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ struct ptp_clock_info *ops = ptp->info;
+ struct ptp_clock_request req = { .type = PTP_CLK_REQ_EXTTS };
+ int cnt, enable;
+ int err = -EINVAL;
+
+ cnt = sscanf(buf, "%u %d", &req.extts.index, &enable);
+ if (cnt != 2)
+ goto out;
+ if (req.extts.index >= ops->n_ext_ts)
+ goto out;
+
+ err = ops->enable(ops, &req, enable ? 1 : 0);
+ if (err)
+ goto out;
+
+ return count;
+out:
+ return err;
+}
+static DEVICE_ATTR(extts_enable, 0220, NULL, extts_enable_store);
+
+static ssize_t extts_fifo_show(struct device *dev,
+ struct device_attribute *attr, char *page)
+{
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ struct timestamp_event_queue *queue = &ptp->tsevq;
+ struct ptp_extts_event event;
+ unsigned long flags;
+ size_t qcnt;
+ int cnt = 0;
+
+ memset(&event, 0, sizeof(event));
+
+ if (mutex_lock_interruptible(&ptp->tsevq_mux))
+ return -ERESTARTSYS;
+
+ spin_lock_irqsave(&queue->lock, flags);
+ qcnt = queue_cnt(queue);
+ if (qcnt) {
+ event = queue->buf[queue->head];
+ queue->head = (queue->head + 1) % PTP_MAX_TIMESTAMPS;
+ }
+ spin_unlock_irqrestore(&queue->lock, flags);
+
+ if (!qcnt)
+ goto out;
+
+ cnt = snprintf(page, PAGE_SIZE, "%u %lld %u\n",
+ event.index, event.t.sec, event.t.nsec);
+out:
+ mutex_unlock(&ptp->tsevq_mux);
+ return cnt;
+}
+static DEVICE_ATTR(fifo, 0444, extts_fifo_show, NULL);
+
+static ssize_t period_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ struct ptp_clock_info *ops = ptp->info;
+ struct ptp_clock_request req = { .type = PTP_CLK_REQ_PEROUT };
+ int cnt, enable, err = -EINVAL;
+
+ cnt = sscanf(buf, "%u %lld %u %lld %u", &req.perout.index,
+ &req.perout.start.sec, &req.perout.start.nsec,
+ &req.perout.period.sec, &req.perout.period.nsec);
+ if (cnt != 5)
+ goto out;
+ if (req.perout.index >= ops->n_per_out)
+ goto out;
+
+ enable = req.perout.period.sec || req.perout.period.nsec;
+ err = ops->enable(ops, &req, enable);
+ if (err)
+ goto out;
+
+ return count;
+out:
+ return err;
+}
+static DEVICE_ATTR(period, 0220, NULL, period_store);
+
+static ssize_t pps_enable_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ struct ptp_clock_info *ops = ptp->info;
+ struct ptp_clock_request req = { .type = PTP_CLK_REQ_PPS };
+ int cnt, enable;
+ int err = -EINVAL;
+
+ if (!capable(CAP_SYS_TIME))
+ return -EPERM;
+
+ cnt = sscanf(buf, "%d", &enable);
+ if (cnt != 1)
+ goto out;
+
+ err = ops->enable(ops, &req, enable ? 1 : 0);
+ if (err)
+ goto out;
+
+ return count;
+out:
+ return err;
+}
+static DEVICE_ATTR(pps_enable, 0220, NULL, pps_enable_store);
+
+static struct attribute *ptp_attrs[] = {
+ &dev_attr_clock_name.attr,
+
+ &dev_attr_max_adjustment.attr,
+ &dev_attr_n_alarms.attr,
+ &dev_attr_n_external_timestamps.attr,
+ &dev_attr_n_periodic_outputs.attr,
+ &dev_attr_n_programmable_pins.attr,
+ &dev_attr_pps_available.attr,
+
+ &dev_attr_extts_enable.attr,
+ &dev_attr_fifo.attr,
+ &dev_attr_period.attr,
+ &dev_attr_pps_enable.attr,
+ NULL
+};
+
+static umode_t ptp_is_attribute_visible(struct kobject *kobj,
+ struct attribute *attr, int n)
+{
+ struct device *dev = kobj_to_dev(kobj);
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ struct ptp_clock_info *info = ptp->info;
+ umode_t mode = attr->mode;
+
+ if (attr == &dev_attr_extts_enable.attr ||
+ attr == &dev_attr_fifo.attr) {
+ if (!info->n_ext_ts)
+ mode = 0;
+ } else if (attr == &dev_attr_period.attr) {
+ if (!info->n_per_out)
+ mode = 0;
+ } else if (attr == &dev_attr_pps_enable.attr) {
+ if (!info->pps)
+ mode = 0;
+ }
+
+ return mode;
+}
+
+static const struct attribute_group ptp_group = {
+ .is_visible = ptp_is_attribute_visible,
+ .attrs = ptp_attrs,
+};
+
+const struct attribute_group *ptp_groups[] = {
+ &ptp_group,
+ NULL
+};
+
+static int ptp_pin_name2index(struct ptp_clock *ptp, const char *name)
+{
+ int i;
+ for (i = 0; i < ptp->info->n_pins; i++) {
+ if (!strcmp(ptp->info->pin_config[i].name, name))
+ return i;
+ }
+ return -1;
+}
+
+static ssize_t ptp_pin_show(struct device *dev, struct device_attribute *attr,
+ char *page)
+{
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ unsigned int func, chan;
+ int index;
+
+ index = ptp_pin_name2index(ptp, attr->attr.name);
+ if (index < 0)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&ptp->pincfg_mux))
+ return -ERESTARTSYS;
+
+ func = ptp->info->pin_config[index].func;
+ chan = ptp->info->pin_config[index].chan;
+
+ mutex_unlock(&ptp->pincfg_mux);
+
+ return snprintf(page, PAGE_SIZE, "%u %u\n", func, chan);
+}
+
+static ssize_t ptp_pin_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_clock *ptp = dev_get_drvdata(dev);
+ unsigned int func, chan;
+ int cnt, err, index;
+
+ cnt = sscanf(buf, "%u %u", &func, &chan);
+ if (cnt != 2)
+ return -EINVAL;
+
+ index = ptp_pin_name2index(ptp, attr->attr.name);
+ if (index < 0)
+ return -EINVAL;
+
+ if (mutex_lock_interruptible(&ptp->pincfg_mux))
+ return -ERESTARTSYS;
+ err = ptp_set_pinfunc(ptp, index, func, chan);
+ mutex_unlock(&ptp->pincfg_mux);
+ if (err)
+ return err;
+
+ return count;
+}
+
+int ptp_populate_pin_groups(struct ptp_clock *ptp)
+{
+ struct ptp_clock_info *info = ptp->info;
+ int err = -ENOMEM, i, n_pins = info->n_pins;
+
+ if (!n_pins)
+ return 0;
+
+ ptp->pin_dev_attr = kcalloc(n_pins, sizeof(*ptp->pin_dev_attr),
+ GFP_KERNEL);
+ if (!ptp->pin_dev_attr)
+ goto no_dev_attr;
+
+ ptp->pin_attr = kcalloc(1 + n_pins, sizeof(*ptp->pin_attr), GFP_KERNEL);
+ if (!ptp->pin_attr)
+ goto no_pin_attr;
+
+ for (i = 0; i < n_pins; i++) {
+ struct device_attribute *da = &ptp->pin_dev_attr[i];
+ sysfs_attr_init(&da->attr);
+ da->attr.name = info->pin_config[i].name;
+ da->attr.mode = 0644;
+ da->show = ptp_pin_show;
+ da->store = ptp_pin_store;
+ ptp->pin_attr[i] = &da->attr;
+ }
+
+ ptp->pin_attr_group.name = "pins";
+ ptp->pin_attr_group.attrs = ptp->pin_attr;
+
+ ptp->pin_attr_groups[0] = &ptp->pin_attr_group;
+
+ return 0;
+
+no_pin_attr:
+ kfree(ptp->pin_dev_attr);
+no_dev_attr:
+ return err;
+}
+
+void ptp_cleanup_pin_groups(struct ptp_clock *ptp)
+{
+ kfree(ptp->pin_attr);
+ kfree(ptp->pin_dev_attr);
+}