Merge tag 'char-misc-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big set of char/misc/other driver patches for 5.7-rc1.

  Lots of things in here, and it's later than expected due to some
  reverts to resolve some reported issues. All is now clean with no
  reported problems in linux-next.

  Included in here is:
   - interconnect updates
   - mei driver updates
   - uio updates
   - nvmem driver updates
   - soundwire updates
   - binderfs updates
   - coresight updates
   - habanalabs updates
   - mhi new bus type and core
   - extcon driver updates
   - some Kconfig cleanups
   - other small misc driver cleanups and updates

  As mentioned, all have been in linux-next for a while, and with the
  last two reverts, all is calm and good"

* tag 'char-misc-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (174 commits)
  Revert "driver core: platform: Initialize dma_parms for platform devices"
  Revert "amba: Initialize dma_parms for amba devices"
  amba: Initialize dma_parms for amba devices
  driver core: platform: Initialize dma_parms for platform devices
  bus: mhi: core: Drop the references to mhi_dev in mhi_destroy_device()
  bus: mhi: core: Initialize bhie field in mhi_cntrl for RDDM capture
  bus: mhi: core: Add support for reading MHI info from device
  misc: rtsx: set correct pcr_ops for rts522A
  speakup: misc: Use dynamic minor numbers for speakup devices
  mei: me: add cedar fork device ids
  coresight: do not use the BIT() macro in the UAPI header
  Documentation: provide IBM contacts for embargoed hardware
  nvmem: core: remove nvmem_sysfs_get_groups()
  nvmem: core: use is_bin_visible for permissions
  nvmem: core: use device_register and device_unregister
  nvmem: core: add root_only member to nvmem device struct
  extcon: axp288: Add wakeup support
  extcon: Mark extcon_get_edev_name() function as exported symbol
  extcon: palmas: Hide error messages if gpio returns -EPROBE_DEFER
  dt-bindings: extcon: usbc-cros-ec: convert extcon-usbc-cros-ec.txt to yaml format
  ...

1 files changed, 150 insertions, 0 deletions

diff --git a/drivers/interconnect/qcom/icc-rpmh.c b/drivers/interconnect/qcom/icc-rpmh.c
new file mode 100644
index 000000000000..3ac5182c9ab2
--- /dev/null
+++ b/drivers/interconnect/qcom/icc-rpmh.c
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ */
+
+#include <linux/interconnect.h>
+#include <linux/interconnect-provider.h>
+#include <linux/module.h>
+
+#include "bcm-voter.h"
+#include "icc-rpmh.h"
+
+/**
+ * qcom_icc_pre_aggregate - cleans up stale values from prior icc_set
+ * @node: icc node to operate on
+ */
+void qcom_icc_pre_aggregate(struct icc_node *node)
+{
+	size_t i;
+	struct qcom_icc_node *qn;
+
+	qn = node->data;
+
+	for (i = 0; i < QCOM_ICC_NUM_BUCKETS; i++) {
+		qn->sum_avg[i] = 0;
+		qn->max_peak[i] = 0;
+	}
+}
+EXPORT_SYMBOL_GPL(qcom_icc_pre_aggregate);
+
+/**
+ * qcom_icc_aggregate - aggregate bw for buckets indicated by tag
+ * @node: node to aggregate
+ * @tag: tag to indicate which buckets to aggregate
+ * @avg_bw: new bw to sum aggregate
+ * @peak_bw: new bw to max aggregate
+ * @agg_avg: existing aggregate avg bw val
+ * @agg_peak: existing aggregate peak bw val
+ */
+int qcom_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw,
+		       u32 peak_bw, u32 *agg_avg, u32 *agg_peak)
+{
+	size_t i;
+	struct qcom_icc_node *qn;
+	struct qcom_icc_provider *qp;
+
+	qn = node->data;
+	qp = to_qcom_provider(node->provider);
+
+	if (!tag)
+		tag = QCOM_ICC_TAG_ALWAYS;
+
+	for (i = 0; i < QCOM_ICC_NUM_BUCKETS; i++) {
+		if (tag & BIT(i)) {
+			qn->sum_avg[i] += avg_bw;
+			qn->max_peak[i] = max_t(u32, qn->max_peak[i], peak_bw);
+		}
+	}
+
+	*agg_avg += avg_bw;
+	*agg_peak = max_t(u32, *agg_peak, peak_bw);
+
+	for (i = 0; i < qn->num_bcms; i++)
+		qcom_icc_bcm_voter_add(qp->voter, qn->bcms[i]);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(qcom_icc_aggregate);
+
+/**
+ * qcom_icc_set - set the constraints based on path
+ * @src: source node for the path to set constraints on
+ * @dst: destination node for the path to set constraints on
+ *
+ * Return: 0 on success, or an error code otherwise
+ */
+int qcom_icc_set(struct icc_node *src, struct icc_node *dst)
+{
+	struct qcom_icc_provider *qp;
+	struct icc_node *node;
+
+	if (!src)
+		node = dst;
+	else
+		node = src;
+
+	qp = to_qcom_provider(node->provider);
+
+	qcom_icc_bcm_voter_commit(qp->voter);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(qcom_icc_set);
+
+/**
+ * qcom_icc_bcm_init - populates bcm aux data and connect qnodes
+ * @bcm: bcm to be initialized
+ * @dev: associated provider device
+ *
+ * Return: 0 on success, or an error code otherwise
+ */
+int qcom_icc_bcm_init(struct qcom_icc_bcm *bcm, struct device *dev)
+{
+	struct qcom_icc_node *qn;
+	const struct bcm_db *data;
+	size_t data_count;
+	int i;
+
+	/* BCM is already initialised*/
+	if (bcm->addr)
+		return 0;
+
+	bcm->addr = cmd_db_read_addr(bcm->name);
+	if (!bcm->addr) {
+		dev_err(dev, "%s could not find RPMh address\n",
+			bcm->name);
+		return -EINVAL;
+	}
+
+	data = cmd_db_read_aux_data(bcm->name, &data_count);
+	if (IS_ERR(data)) {
+		dev_err(dev, "%s command db read error (%ld)\n",
+			bcm->name, PTR_ERR(data));
+		return PTR_ERR(data);
+	}
+	if (!data_count) {
+		dev_err(dev, "%s command db missing or partial aux data\n",
+			bcm->name);
+		return -EINVAL;
+	}
+
+	bcm->aux_data.unit = le32_to_cpu(data->unit);
+	bcm->aux_data.width = le16_to_cpu(data->width);
+	bcm->aux_data.vcd = data->vcd;
+	bcm->aux_data.reserved = data->reserved;
+	INIT_LIST_HEAD(&bcm->list);
+	INIT_LIST_HEAD(&bcm->ws_list);
+
+	/* Link Qnodes to their respective BCMs */
+	for (i = 0; i < bcm->num_nodes; i++) {
+		qn = bcm->nodes[i];
+		qn->bcms[qn->num_bcms] = bcm;
+		qn->num_bcms++;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(qcom_icc_bcm_init);
+
+MODULE_LICENSE("GPL v2");