ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/mtd/nand/raw/plat_nand.c b/marvell/linux/drivers/mtd/nand/raw/plat_nand.c
new file mode 100644
index 0000000..3a495b2
--- /dev/null
+++ b/marvell/linux/drivers/mtd/nand/raw/plat_nand.c
@@ -0,0 +1,137 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Generic NAND driver
+ *
+ * Author: Vitaly Wool <vitalywool@gmail.com>
+ */
+
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/platnand.h>
+
+struct plat_nand_data {
+ struct nand_chip chip;
+ void __iomem *io_base;
+};
+
+/*
+ * Probe for the NAND device.
+ */
+static int plat_nand_probe(struct platform_device *pdev)
+{
+ struct platform_nand_data *pdata = dev_get_platdata(&pdev->dev);
+ struct plat_nand_data *data;
+ struct mtd_info *mtd;
+ struct resource *res;
+ const char **part_types;
+ int err = 0;
+
+ if (!pdata) {
+ dev_err(&pdev->dev, "platform_nand_data is missing\n");
+ return -EINVAL;
+ }
+
+ if (pdata->chip.nr_chips < 1) {
+ dev_err(&pdev->dev, "invalid number of chips specified\n");
+ return -EINVAL;
+ }
+
+ /* Allocate memory for the device structure (and zero it) */
+ data = devm_kzalloc(&pdev->dev, sizeof(struct plat_nand_data),
+ GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ data->io_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(data->io_base))
+ return PTR_ERR(data->io_base);
+
+ nand_set_flash_node(&data->chip, pdev->dev.of_node);
+ mtd = nand_to_mtd(&data->chip);
+ mtd->dev.parent = &pdev->dev;
+
+ data->chip.legacy.IO_ADDR_R = data->io_base;
+ data->chip.legacy.IO_ADDR_W = data->io_base;
+ data->chip.legacy.cmd_ctrl = pdata->ctrl.cmd_ctrl;
+ data->chip.legacy.dev_ready = pdata->ctrl.dev_ready;
+ data->chip.legacy.select_chip = pdata->ctrl.select_chip;
+ data->chip.legacy.write_buf = pdata->ctrl.write_buf;
+ data->chip.legacy.read_buf = pdata->ctrl.read_buf;
+ data->chip.legacy.chip_delay = pdata->chip.chip_delay;
+ data->chip.options |= pdata->chip.options;
+ data->chip.bbt_options |= pdata->chip.bbt_options;
+
+ data->chip.ecc.mode = NAND_ECC_SOFT;
+ data->chip.ecc.algo = NAND_ECC_HAMMING;
+
+ platform_set_drvdata(pdev, data);
+
+ /* Handle any platform specific setup */
+ if (pdata->ctrl.probe) {
+ err = pdata->ctrl.probe(pdev);
+ if (err)
+ goto out;
+ }
+
+ /* Scan to find existence of the device */
+ err = nand_scan(&data->chip, pdata->chip.nr_chips);
+ if (err)
+ goto out;
+
+ part_types = pdata->chip.part_probe_types;
+
+ err = mtd_device_parse_register(mtd, part_types, NULL,
+ pdata->chip.partitions,
+ pdata->chip.nr_partitions);
+
+ if (!err)
+ return err;
+
+ nand_cleanup(&data->chip);
+out:
+ if (pdata->ctrl.remove)
+ pdata->ctrl.remove(pdev);
+ return err;
+}
+
+/*
+ * Remove a NAND device.
+ */
+static int plat_nand_remove(struct platform_device *pdev)
+{
+ struct plat_nand_data *data = platform_get_drvdata(pdev);
+ struct platform_nand_data *pdata = dev_get_platdata(&pdev->dev);
+
+ nand_release(&data->chip);
+ if (pdata->ctrl.remove)
+ pdata->ctrl.remove(pdev);
+
+ return 0;
+}
+
+static const struct of_device_id plat_nand_match[] = {
+ { .compatible = "gen_nand" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, plat_nand_match);
+
+static struct platform_driver plat_nand_driver = {
+ .probe = plat_nand_probe,
+ .remove = plat_nand_remove,
+ .driver = {
+ .name = "gen_nand",
+ .of_match_table = plat_nand_match,
+ },
+};
+
+module_platform_driver(plat_nand_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Vitaly Wool");
+MODULE_DESCRIPTION("Simple generic NAND driver");
+MODULE_ALIAS("platform:gen_nand");