Merge tag 'spi-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "The only real core work we've got this time around is the completion
  of the transition to the new host/target naming for the core APIs,
  Kconfig still needs doing but that's a lot less invasive.

  Otherwise the big changes are the new drivers that have been added:

   - Completion of the conversion to spi_alloc_host()/_target() and
     removal of the old naming.

   - Cleanups for Rockchip drivers, these brought in a new logging
     helper in the driver core for warnings during probe.

   - Support for configuration of the word delay via spidev_test.

   - Support for AMD HID2 controllers, Apple SPI controller and Realtek
     SPI-NAND controllers"

* tag 'spi-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (58 commits)
  spi: imx: support word delay
  spi: imx: pass struct spi_transfer to prepare_transfer()
  spi: cs42l43: Add GPIO speaker id support to the bridge configuration
  spi: Delete useless checks
  spi: apple: Remove unnecessary .owner for apple_spi_driver
  spi: spidev_test: add support for word delay
  spi: apple: Add driver for Apple SPI controller
  spi: dt-bindings: apple,spi: Add binding for Apple SPI controllers
  spi: Use of_property_present() for non-boolean properties
  spi: zynqmp-gqspi: Undo runtime PM changes at driver exit time​
  spi: spi-mem: rtl-snand: Correctly handle DMA transfers
  spi: tegra210-quad: Avoid shift-out-of-bounds
  spi: axi-spi-engine: Emit trace events for spi transfers
  dt-bindings: spi: sprd,sc9860-spi: convert to YAML
  spi: Replace deprecated PCI functions
  spi: dt-bindings: samsung: Add a compatible for samsung,exynos8895-spi
  spi: spi-mem: Add Realtek SPI-NAND controller
  dt-bindings: spi: Add realtek,rtl9301-snand
  spi: make class structs const
  spi: dt-bindings: brcm,bcm2835-aux-spi: Convert to dtschema
  ...

1 files changed, 59 insertions, 5 deletions

diff --git a/drivers/spi/spi-intel.c b/drivers/spi/spi-intel.c
index 795b7e72baead..b0dcdb6fb8fa9 100644
--- a/drivers/spi/spi-intel.c
+++ b/drivers/spi/spi-intel.c
@@ -148,6 +148,8 @@
  * @pr_num: Maximum number of protected range registers
  * @chip0_size: Size of the first flash chip in bytes
  * @locked: Is SPI setting locked
+ * @protected: Whether the regions are write protected
+ * @bios_locked: Is BIOS region locked
  * @swseq_reg: Use SW sequencer in register reads/writes
  * @swseq_erase: Use SW sequencer in erase operation
  * @atomic_preopcode: Holds preopcode when atomic sequence is requested
@@ -166,6 +168,8 @@ struct intel_spi {
 	size_t pr_num;
 	size_t chip0_size;
 	bool locked;
+	bool protected;
+	bool bios_locked;
 	bool swseq_reg;
 	bool swseq_erase;
 	u8 atomic_preopcode;
@@ -1109,10 +1113,13 @@ static int intel_spi_init(struct intel_spi *ispi)
 		return -EINVAL;
 	}
 
-	/* Try to disable write protection if user asked to do so */
-	if (writeable && !intel_spi_set_writeable(ispi)) {
-		dev_warn(ispi->dev, "can't disable chip write protection\n");
-		writeable = false;
+	ispi->bios_locked = true;
+	/* Try to disable BIOS write protection if user asked to do so */
+	if (writeable) {
+		if (intel_spi_set_writeable(ispi))
+			ispi->bios_locked = false;
+		else
+			dev_warn(ispi->dev, "can't disable chip write protection\n");
 	}
 
 	/* Disable #SMI generation from HW sequencer */
@@ -1247,8 +1254,10 @@ static void intel_spi_fill_partition(struct intel_spi *ispi,
 		 * Also if the user did not ask the chip to be writeable
 		 * mask the bit too.
 		 */
-		if (!writeable || intel_spi_is_protected(ispi, base, limit))
+		if (!writeable || intel_spi_is_protected(ispi, base, limit)) {
 			part->mask_flags |= MTD_WRITEABLE;
+			ispi->protected = true;
+		}
 
 		end = (limit << 12) + 4096;
 		if (end > part->size)
@@ -1411,6 +1420,50 @@ static int intel_spi_populate_chip(struct intel_spi *ispi)
 	return 0;
 }
 
+static ssize_t intel_spi_protected_show(struct device *dev,
+					struct device_attribute *attr, char *buf)
+{
+	struct intel_spi *ispi = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%d\n", ispi->protected);
+}
+static DEVICE_ATTR_ADMIN_RO(intel_spi_protected);
+
+static ssize_t intel_spi_locked_show(struct device *dev,
+				     struct device_attribute *attr, char *buf)
+{
+	struct intel_spi *ispi = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%d\n", ispi->locked);
+}
+static DEVICE_ATTR_ADMIN_RO(intel_spi_locked);
+
+static ssize_t intel_spi_bios_locked_show(struct device *dev,
+					  struct device_attribute *attr, char *buf)
+{
+	struct intel_spi *ispi = dev_get_drvdata(dev);
+
+	return sysfs_emit(buf, "%d\n", ispi->bios_locked);
+}
+static DEVICE_ATTR_ADMIN_RO(intel_spi_bios_locked);
+
+static struct attribute *intel_spi_attrs[] = {
+	&dev_attr_intel_spi_protected.attr,
+	&dev_attr_intel_spi_locked.attr,
+	&dev_attr_intel_spi_bios_locked.attr,
+	NULL
+};
+
+static const struct attribute_group intel_spi_attr_group = {
+	.attrs = intel_spi_attrs,
+};
+
+const struct attribute_group *intel_spi_groups[] = {
+	&intel_spi_attr_group,
+	NULL
+};
+EXPORT_SYMBOL_GPL(intel_spi_groups);
+
 /**
  * intel_spi_probe() - Probe the Intel SPI flash controller
  * @dev: Pointer to the parent device
@@ -1451,6 +1504,7 @@ int intel_spi_probe(struct device *dev, struct resource *mem,
 	if (ret)
 		return ret;
 
+	dev_set_drvdata(dev, ispi);
 	return intel_spi_populate_chip(ispi);
 }
 EXPORT_SYMBOL_GPL(intel_spi_probe);