1 // SPDX-License-Identifier: GPL-2.0-only
3  * Generic NAND driver
24 	chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT;  in plat_nand_attach_chip()
26 	if (chip->ecc.algo == NAND_ECC_ALGO_UNKNOWN)  in plat_nand_attach_chip()
27 		chip->ecc.algo = NAND_ECC_ALGO_HAMMING;  in plat_nand_attach_chip()
37  * Probe for the NAND device.
41 	struct platform_nand_data *pdata = dev_get_platdata(&pdev->dev);  in plat_nand_probe()
49 		dev_err(&pdev->dev, "platform_nand_data is missing\n");  in plat_nand_probe()
50 		return -EINVAL;  in plat_nand_probe()
53 	if (pdata->chip.nr_chips < 1) {  in plat_nand_probe()
54 		dev_err(&pdev->dev, "invalid number of chips specified\n");  in plat_nand_probe()
55 		return -EINVAL;  in plat_nand_probe()
59 	data = devm_kzalloc(&pdev->dev, sizeof(struct plat_nand_data),  in plat_nand_probe()
62 		return -ENOMEM;  in plat_nand_probe()
64 	data->controller.ops = &plat_nand_ops;  in plat_nand_probe()
65 	nand_controller_init(&data->controller);  in plat_nand_probe()
66 	data->chip.controller = &data->controller;  in plat_nand_probe()
69 	data->io_base = devm_ioremap_resource(&pdev->dev, res);  in plat_nand_probe()
70 	if (IS_ERR(data->io_base))  in plat_nand_probe()
71 		return PTR_ERR(data->io_base);  in plat_nand_probe()
73 	nand_set_flash_node(&data->chip, pdev->dev.of_node);  in plat_nand_probe()
74 	mtd = nand_to_mtd(&data->chip);  in plat_nand_probe()
75 	mtd->dev.parent = &pdev->dev;  in plat_nand_probe()
77 	data->chip.legacy.IO_ADDR_R = data->io_base;  in plat_nand_probe()
78 	data->chip.legacy.IO_ADDR_W = data->io_base;  in plat_nand_probe()
79 	data->chip.legacy.cmd_ctrl = pdata->ctrl.cmd_ctrl;  in plat_nand_probe()
80 	data->chip.legacy.dev_ready = pdata->ctrl.dev_ready;  in plat_nand_probe()
81 	data->chip.legacy.select_chip = pdata->ctrl.select_chip;  in plat_nand_probe()
82 	data->chip.legacy.write_buf = pdata->ctrl.write_buf;  in plat_nand_probe()
83 	data->chip.legacy.read_buf = pdata->ctrl.read_buf;  in plat_nand_probe()
84 	data->chip.legacy.chip_delay = pdata->chip.chip_delay;  in plat_nand_probe()
85 	data->chip.options |= pdata->chip.options;  in plat_nand_probe()
86 	data->chip.bbt_options |= pdata->chip.bbt_options;  in plat_nand_probe()
91 	if (pdata->ctrl.probe) {  in plat_nand_probe()
92 		err = pdata->ctrl.probe(pdev);  in plat_nand_probe()
98 	err = nand_scan(&data->chip, pdata->chip.nr_chips);  in plat_nand_probe()
102 	part_types = pdata->chip.part_probe_types;  in plat_nand_probe()
105 					pdata->chip.partitions,  in plat_nand_probe()
106 					pdata->chip.nr_partitions);  in plat_nand_probe()
111 	nand_cleanup(&data->chip);  in plat_nand_probe()
113 	if (pdata->ctrl.remove)  in plat_nand_probe()
114 		pdata->ctrl.remove(pdev);  in plat_nand_probe()
119  * Remove a NAND device.
124 	struct platform_nand_data *pdata = dev_get_platdata(&pdev->dev);  in plat_nand_remove()
125 	struct nand_chip *chip = &data->chip;  in plat_nand_remove()
131 	if (pdata->ctrl.remove)  in plat_nand_remove()
132 		pdata->ctrl.remove(pdev);  in plat_nand_remove()
156 MODULE_DESCRIPTION("Simple generic NAND driver");