arm64: phytium: UEFI mode acpi table support for qspi/spi driver

Add acpi table support for qspi/spi driver, supporting
parsing of ACPI tables.

Signed-off-by: yuanxia <[email protected]>
Signed-off-by: Wang Hanmo <[email protected]>
Signed-off-by: Wang Yinfeng <[email protected]>

drivers/mtd/mtdpart.c

@@ -19,6 +19,8 @@
 #include <linux/of.h>
 #include <linux/of_platform.h>
 
+#include <linux/acpi.h>
+#include <linux/property.h>
 #include "mtdcore.h"
 
 /*
@@ -504,12 +506,14 @@ EXPORT_SYMBOL_GPL(deregister_mtd_parser);
 static const char * const default_mtd_part_types[] = {
 	"cmdlinepart",
 	"ofpart",
+	"acpipart",
 	NULL
 };
 
 /* Check DT only when looking for subpartitions. */
 static const char * const default_subpartition_types[] = {
 	"ofpart",
+	"acpipart",
 	NULL
 };
 
@@ -573,6 +577,43 @@ static struct mtd_part_parser *mtd_part_get_compatible_parser(const char *compat
 	return ret;
 }
 
+static int mtd_part_acpi_parse(struct mtd_info *master,
+						struct mtd_partitions *pparts)
+{
+	struct mtd_part_parser *parser;
+	struct acpi_device *adev;
+	struct fwnode_handle *child;
+	const char *compat;
+	const char *fixed = "acpi-fixed-partitions";
+	int ret, err = 0;
+	int compare = 1;
+	struct device *dev = &master->dev;
+
+	if (!mtd_is_partition(master)) {
+		fwnode_property_read_string(dev->fwnode, "fixed", &compat);
+		if (compat)
+			compare = strcmp(compat, fixed);
+	}
+
+	//all child node
+	device_for_each_child_node(dev, child) {
+		if (compat && !compare) {
+			parser = mtd_part_parser_get(fixed);
+			if (!parser && !request_module("%s", fixed))
+				parser = mtd_part_parser_get(fixed);
+			if (parser) {
+				ret = mtd_part_do_parse(parser, master, pparts, NULL);
+				if (ret > 0)
+					return ret;
+				mtd_part_parser_put(parser);
+				if (ret < 0 && !err)
+					err = ret;
+			}
+		}
+	}
+	return err;
+}
+
 static int mtd_part_of_parse(struct mtd_info *master,
 			     struct mtd_partitions *pparts)
 {
@@ -678,7 +719,9 @@ int parse_mtd_partitions(struct mtd_info *master, const char *const *types,
 		 * should be used. It requires a bit different logic so it is
 		 * handled in a separated function.
 		 */
-		if (!strcmp(*types, "ofpart")) {
+		if (!strcmp(*types, "acpipart")) {
+			ret = mtd_part_acpi_parse(master, &pparts);
+		} else if (!strcmp(*types, "ofpart")) {
 			ret = mtd_part_of_parse(master, &pparts);
 		} else {
 			pr_debug("%s: parsing partitions %s\n", master->name,

drivers/mtd/parsers/Kconfig

@@ -96,6 +96,14 @@ config MTD_OF_PARTS_LINKSYS_NS
 	  two "firmware" partitions. Currently used firmware has to be detected
 	  using CFE environment variable.
 
+config MTD_ACPI_PARTS
+	tristate "ACPI partitioning parser"
+	depends on ACPI && (ARCH_PHYTIUM || COMPILE_TEST)
+	help
+	  This provides an acpi partition parser, which is used to parse the
+	  partition map described in ACPI table, as the children of the flash
+	  memory struct.
+
 config MTD_PARSER_IMAGETAG
 	tristate "Parser for BCM963XX Image Tag format partitions"
 	depends on BCM63XX || BMIPS_GENERIC || COMPILE_TEST

drivers/mtd/parsers/Makefile

@@ -8,6 +8,8 @@ obj-$(CONFIG_MTD_OF_PARTS)		+= ofpart.o
 ofpart-y				+= ofpart_core.o
 ofpart-$(CONFIG_MTD_OF_PARTS_BCM4908)	+= ofpart_bcm4908.o
 ofpart-$(CONFIG_MTD_OF_PARTS_LINKSYS_NS)+= ofpart_linksys_ns.o
+obj-$(CONFIG_MTD_ACPI_PARTS)		+= acpipart.o
+acpipart-y				+= acpipart_core.o
 obj-$(CONFIG_MTD_PARSER_IMAGETAG)	+= parser_imagetag.o
 obj-$(CONFIG_MTD_AFS_PARTS)		+= afs.o
 obj-$(CONFIG_MTD_PARSER_TPLINK_SAFELOADER)	+= tplink_safeloader.o

drivers/mtd/parsers/acpipart_core.c

@@ -0,0 +1,143 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Flash partitions described by the acpi table
+ *
+ * Author: Wang Hanmo <[email protected]>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/mtd/mtd.h>
+#include <linux/slab.h>
+#include <linux/mtd/partitions.h>
+#include <linux/property.h>
+#include <linux/acpi.h>
+
+static const struct acpi_device_id parse_acpipart_match_table[];
+
+static int parse_acpi_fixed_partitions(struct mtd_info *master,
+				  const struct mtd_partition **pparts,
+				  struct mtd_part_parser_data *data)
+{
+	struct mtd_partition *parts;
+	struct acpi_device_id *acpi_id;
+	const char *partname;
+	int nr_parts, i, ret = 0;
+	struct acpi_device *adev;
+	struct fwnode_handle *child;
+	struct fwnode_handle *child_handle;
+	bool dedicated = true;
+	struct device *dev;
+
+	dev = &master->dev;
+	adev = ACPI_COMPANION(&master->dev);
+
+	if (!master->parent) {/*master*/
+		device_get_next_child_node(dev, child_handle);
+		if (!child_handle) {
+			pr_debug("%s: 'partitions' subnode not found on %pOF. Trying to parse direct subnodes as partitions.\n",
+				master->name, child_handle);
+			dedicated = false;
+		}
+	}
+
+	acpi_id = acpi_match_device(parse_acpipart_match_table, dev);
+	if (dedicated && !acpi_id)
+		return 0;
+
+	nr_parts = 0;
+	device_for_each_child_node(dev, child_handle) {
+		nr_parts++;
+	}
+
+	if (nr_parts == 0)
+		return 0;
+	parts = kcalloc(nr_parts, sizeof(*parts), GFP_KERNEL);
+	if (!parts)
+		return -ENOMEM;
+
+	i = 0;
+	device_for_each_child_node(dev, child_handle) {
+		u64 offset, length;
+		bool bool_match;
+
+		fwnode_property_read_u64(child_handle, "offset", &offset);
+		fwnode_property_read_u64(child_handle, "length", &length);
+		if (!offset && !length) {
+			if (dedicated) {
+				pr_debug("%s: acpipart partition %pOF (%pOF) missing reg property.\n",
+					 master->name, child_handle,
+					 dev->fwnode);
+				goto acpipart_fail;
+			} else {
+				nr_parts--;
+				continue;
+			}
+		}
+
+		parts[i].offset = offset;
+		parts[i].size = length;
+		parts[i].fwnode = child_handle;
+		if (!fwnode_property_read_string(child_handle, "label", &partname))
+			parts[i].name = partname;
+		bool_match = fwnode_property_read_bool(child_handle, "read-only");
+		if (bool_match)
+			parts[i].mask_flags |= MTD_WRITEABLE;
+		bool_match = fwnode_property_read_bool(child_handle, "lock");
+		if (bool_match)
+			parts[i].mask_flags |= MTD_POWERUP_LOCK;
+		bool_match = fwnode_property_read_bool(child_handle, "slc-mode");
+		if (bool_match)
+			parts[i].mask_flags |= MTD_SLC_ON_MLC_EMULATION;
+		i++;
+	}
+
+	if (!nr_parts)
+		goto acpipart_none;
+
+	*pparts = parts;
+	ret = nr_parts;
+	return ret;
+
+acpipart_fail:
+	pr_err("%s: error parsing acpipart partition %pOF (%pOF)\n",
+	       master->name, child_handle, dev->fwnode);
+	ret = -EINVAL;
+acpipart_none:
+	kfree(parts);
+	return ret;
+}
+
+static const struct acpi_device_id parse_acpipart_match_table[] = {
+	/* Generic */
+	{ "acpi-fixed-partitions", 0 },
+	/* Customized */
+	{},
+};
+
+MODULE_DEVICE_TABLE(acpi, parse_acpipart_match_table);
+
+static struct mtd_part_parser acpipart_parser = {
+	.parse_fn = parse_acpi_fixed_partitions,
+	.name = "acpi-fixed-partitions",
+	.acpi_match_table = ACPI_PTR(parse_acpipart_match_table),
+};
+
+static int __init acpipart_parser_init(void)
+{
+	register_mtd_parser(&acpipart_parser);
+	return 0;
+}
+
+static void __exit acpipart_parser_exit(void)
+{
+	deregister_mtd_parser(&acpipart_parser);
+}
+
+module_init(acpipart_parser_init);
+module_exit(acpipart_parser_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Parser for MTD partitioning information in acpi table");
+MODULE_AUTHOR("wanghanmo <[email protected]>");
+MODULE_ALIAS("acpi-fixed-partitions");

drivers/mtd/spi-nor/core.c

@@ -7,6 +7,7 @@
  * Copyright (C) 2014, Freescale Semiconductor, Inc.
  */
 
+#include <linux/acpi.h>
 #include <linux/err.h>
 #include <linux/errno.h>
 #include <linux/delay.h>
@@ -17,6 +18,7 @@
 #include <linux/mtd/spi-nor.h>
 #include <linux/mutex.h>
 #include <linux/of_platform.h>
+#include <linux/property.h>
 #include <linux/sched/task_stack.h>
 #include <linux/sizes.h>
 #include <linux/slab.h>
@@ -3621,6 +3623,7 @@ static int spi_nor_probe(struct spi_mem *spimem)
 	struct spi_device *spi = spimem->spi;
 	struct flash_platform_data *data = dev_get_platdata(&spi->dev);
 	struct spi_nor *nor;
+	struct acpi_device *adev;
 	/*
 	 * Enable all caps by default. The core will mask them after
 	 * checking what's really supported using spi_mem_supports_op().
@@ -3636,6 +3639,10 @@ static int spi_nor_probe(struct spi_mem *spimem)
 	nor->spimem = spimem;
 	nor->dev = &spi->dev;
 	spi_nor_set_flash_node(nor, spi->dev.of_node);
+	adev = ACPI_COMPANION(nor->dev);
+	nor->mtd.dev.fwnode = spi->dev.fwnode;
+
+	device_property_read_string(&spi->dev, "_HID", &nor->mtd.name);
 
 	spi_mem_set_drvdata(spimem, nor);
 
@@ -3775,6 +3782,11 @@ static const struct of_device_id spi_nor_of_table[] = {
 };
 MODULE_DEVICE_TABLE(of, spi_nor_of_table);
 
+static const struct acpi_device_id spi_nor_acpi_table[] = {
+	{"PHYT8009", 0},
+	{ },
+};
+MODULE_DEVICE_TABLE(acpi, spi_nor_acpi_table);
 /*
  * REVISIT: many of these chips have deep power-down modes, which
  * should clearly be entered on suspend() to minimize power use.
@@ -3786,6 +3798,7 @@ static struct spi_mem_driver spi_nor_driver = {
 			.name = "spi-nor",
 			.of_match_table = spi_nor_of_table,
 			.dev_groups = spi_nor_sysfs_groups,
+			.acpi_match_table = spi_nor_acpi_table,
 		},
 		.id_table = spi_nor_dev_ids,
 	},

drivers/spi/Kconfig

@@ -765,6 +765,15 @@ config SPI_ORION
 	  This enables using the SPI master controller on the Orion
 	  and MVEBU chips.
 
+config SPI_PCI1XXXX
+	tristate "PCI1XXXX SPI Bus support"
+	depends on PCI
+	help
+	  Say "yes" to Enable the SPI Bus support for the PCI1xxxx card
+	  This is a PCI to SPI Bus driver
+	  This driver can be built as module. If so, the module will be
+	  called as spi-pci1xxxx.
+
 config SPI_PHYTIUM
 	tristate
 	depends on ARCH_PHYTIUM || COMPILE_TEST

drivers/spi/Makefile

@@ -100,6 +100,7 @@ obj-$(CONFIG_SPI_OMAP_UWIRE)		+= spi-omap-uwire.o
 obj-$(CONFIG_SPI_OMAP24XX)		+= spi-omap2-mcspi.o
 obj-$(CONFIG_SPI_TI_QSPI)		+= spi-ti-qspi.o
 obj-$(CONFIG_SPI_ORION)			+= spi-orion.o
+obj-$(CONFIG_SPI_PCI1XXXX)		+= spi-pci1xxxx.o
 obj-$(CONFIG_SPI_PHYTIUM)		+= spi-phytium.o
 obj-$(CONFIG_SPI_PHYTIUM_PLAT)		+= spi-phytium-plat.o
 obj-$(CONFIG_SPI_PHYTIUM_PCI)		+= spi-phytium-pci.o