Merge tag 'char-misc-5.8-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 large set of char/misc driver patches for 5.8-rc1

  Included in here are:

   - habanalabs driver updates, loads

   - mhi bus driver updates

   - extcon driver updates

   - clk driver updates (approved by the clock maintainer)

   - firmware driver updates

   - fpga driver updates

   - gnss driver updates

   - coresight driver updates

   - interconnect driver updates

   - parport driver updates (it's still alive!)

   - nvmem driver updates

   - soundwire driver updates

   - visorbus driver updates

   - w1 driver updates

   - various misc driver updates

  In short, loads of different driver subsystem updates along with the
  drivers as well.

  All have been in linux-next for a while with no reported issues"

* tag 'char-misc-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (233 commits)
  habanalabs: correctly cast u64 to void*
  habanalabs: initialize variable to default value
  extcon: arizona: Fix runtime PM imbalance on error
  extcon: max14577: Add proper dt-compatible strings
  extcon: adc-jack: Fix an error handling path in 'adc_jack_probe()'
  extcon: remove redundant assignment to variable idx
  w1: omap-hdq: print dev_err if irq flags are not cleared
  w1: omap-hdq: fix interrupt handling which did show spurious timeouts
  w1: omap-hdq: fix return value to be -1 if there is a timeout
  w1: omap-hdq: cleanup to add missing newline for some dev_dbg
  /dev/mem: Revoke mappings when a driver claims the region
  misc: xilinx-sdfec: convert get_user_pages() --> pin_user_pages()
  misc: xilinx-sdfec: cleanup return value in xsdfec_table_write()
  misc: xilinx-sdfec: improve get_user_pages_fast() error handling
  nvmem: qfprom: remove incorrect write support
  habanalabs: handle MMU cache invalidation timeout
  habanalabs: don't allow hard reset with open processes
  habanalabs: GAUDI does not support soft-reset
  habanalabs: add print for soft reset due to event
  habanalabs: improve MMU cache invalidation code
  ...

1 files changed, 121 insertions, 0 deletions

diff --git a/drivers/misc/habanalabs/gaudi/gaudi_hwmgr.c b/drivers/misc/habanalabs/gaudi/gaudi_hwmgr.c
new file mode 100644
index 000000000000..6dd2c2a1cd70
--- /dev/null
+++ b/drivers/misc/habanalabs/gaudi/gaudi_hwmgr.c
@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * Copyright 2016-2018 HabanaLabs, Ltd.
+ * All Rights Reserved.
+ */
+
+#include "gaudiP.h"
+#include "include/gaudi/gaudi_fw_if.h"
+
+void gaudi_set_pll_profile(struct hl_device *hdev, enum hl_pll_frequency freq)
+{
+	struct gaudi_device *gaudi = hdev->asic_specific;
+
+	if (freq == PLL_LAST)
+		hl_set_frequency(hdev, MME_PLL, gaudi->max_freq_value);
+}
+
+int gaudi_get_clk_rate(struct hl_device *hdev, u32 *cur_clk, u32 *max_clk)
+{
+	long value;
+
+	if (hl_device_disabled_or_in_reset(hdev))
+		return -ENODEV;
+
+	value = hl_get_frequency(hdev, MME_PLL, false);
+
+	if (value < 0) {
+		dev_err(hdev->dev, "Failed to retrieve device max clock %ld\n",
+			value);
+		return value;
+	}
+
+	*max_clk = (value / 1000 / 1000);
+
+	value = hl_get_frequency(hdev, MME_PLL, true);
+
+	if (value < 0) {
+		dev_err(hdev->dev,
+			"Failed to retrieve device current clock %ld\n",
+			value);
+		return value;
+	}
+
+	*cur_clk = (value / 1000 / 1000);
+
+	return 0;
+}
+
+static ssize_t clk_max_freq_mhz_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+	struct gaudi_device *gaudi = hdev->asic_specific;
+	long value;
+
+	if (hl_device_disabled_or_in_reset(hdev))
+		return -ENODEV;
+
+	value = hl_get_frequency(hdev, MME_PLL, false);
+
+	gaudi->max_freq_value = value;
+
+	return sprintf(buf, "%lu\n", (value / 1000 / 1000));
+}
+
+static ssize_t clk_max_freq_mhz_store(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+	struct gaudi_device *gaudi = hdev->asic_specific;
+	int rc;
+	u64 value;
+
+	if (hl_device_disabled_or_in_reset(hdev)) {
+		count = -ENODEV;
+		goto fail;
+	}
+
+	rc = kstrtoull(buf, 0, &value);
+	if (rc) {
+		count = -EINVAL;
+		goto fail;
+	}
+
+	gaudi->max_freq_value = value * 1000 * 1000;
+
+	hl_set_frequency(hdev, MME_PLL, gaudi->max_freq_value);
+
+fail:
+	return count;
+}
+
+static ssize_t clk_cur_freq_mhz_show(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	struct hl_device *hdev = dev_get_drvdata(dev);
+	long value;
+
+	if (hl_device_disabled_or_in_reset(hdev))
+		return -ENODEV;
+
+	value = hl_get_frequency(hdev, MME_PLL, true);
+
+	return sprintf(buf, "%lu\n", (value / 1000 / 1000));
+}
+
+static DEVICE_ATTR_RW(clk_max_freq_mhz);
+static DEVICE_ATTR_RO(clk_cur_freq_mhz);
+
+static struct attribute *gaudi_dev_attrs[] = {
+	&dev_attr_clk_max_freq_mhz.attr,
+	&dev_attr_clk_cur_freq_mhz.attr,
+	NULL,
+};
+
+void gaudi_add_device_attr(struct hl_device *hdev,
+			struct attribute_group *dev_attr_grp)
+{
+	dev_attr_grp->attrs = gaudi_dev_attrs;
+}