2  * NAND support for Marvell Orion SoC platforms
22 #include <linux/platform_data/mtd-orion_nand.h>
40 		offs = (1 << board->cle);  in orion_nand_cmd_ctrl()
42 		offs = (1 << board->ale);  in orion_nand_cmd_ctrl()
46 	if (nc->options & NAND_BUSWIDTH_16)  in orion_nand_cmd_ctrl()
49 	writeb(cmd, nc->legacy.IO_ADDR_W + offs);  in orion_nand_cmd_ctrl()
54 	void __iomem *io_base = chip->legacy.IO_ADDR_R;  in orion_nand_read_buf()
62 		len--;  in orion_nand_read_buf()
88 	chip->ecc.engine_type = NAND_ECC_ENGINE_TYPE_SOFT;  in orion_nand_attach_chip()
90 	if (chip->ecc.algo == NAND_ECC_ALGO_UNKNOWN)  in orion_nand_attach_chip()
91 		chip->ecc.algo = NAND_ECC_ALGO_HAMMING;  in orion_nand_attach_chip()
111 	info = devm_kzalloc(&pdev->dev,  in orion_nand_probe()
115 		return -ENOMEM;  in orion_nand_probe()
116 	nc = &info->chip;  in orion_nand_probe()
119 	nand_controller_init(&info->controller);  in orion_nand_probe()
120 	info->controller.ops = &orion_nand_ops;  in orion_nand_probe()
121 	nc->controller = &info->controller;  in orion_nand_probe()
124 	io_base = devm_ioremap_resource(&pdev->dev, res);  in orion_nand_probe()
129 	if (pdev->dev.of_node) {  in orion_nand_probe()
130 		board = devm_kzalloc(&pdev->dev, sizeof(struct orion_nand_data),  in orion_nand_probe()
133 			return -ENOMEM;  in orion_nand_probe()
134 		if (!of_property_read_u32(pdev->dev.of_node, "cle", &val))  in orion_nand_probe()
135 			board->cle = (u8)val;  in orion_nand_probe()
137 			board->cle = 0;  in orion_nand_probe()
138 		if (!of_property_read_u32(pdev->dev.of_node, "ale", &val))  in orion_nand_probe()
139 			board->ale = (u8)val;  in orion_nand_probe()
141 			board->ale = 1;  in orion_nand_probe()
142 		if (!of_property_read_u32(pdev->dev.of_node,  in orion_nand_probe()
143 						"bank-width", &val))  in orion_nand_probe()
144 			board->width = (u8)val * 8;  in orion_nand_probe()
146 			board->width = 8;  in orion_nand_probe()
147 		if (!of_property_read_u32(pdev->dev.of_node,  in orion_nand_probe()
148 						"chip-delay", &val))  in orion_nand_probe()
149 			board->chip_delay = (u8)val;  in orion_nand_probe()
151 		board = dev_get_platdata(&pdev->dev);  in orion_nand_probe()
154 	mtd->dev.parent = &pdev->dev;  in orion_nand_probe()
157 	nand_set_flash_node(nc, pdev->dev.of_node);  in orion_nand_probe()
158 	nc->legacy.IO_ADDR_R = nc->legacy.IO_ADDR_W = io_base;  in orion_nand_probe()
159 	nc->legacy.cmd_ctrl = orion_nand_cmd_ctrl;  in orion_nand_probe()
160 	nc->legacy.read_buf = orion_nand_read_buf;  in orion_nand_probe()
162 	if (board->chip_delay)  in orion_nand_probe()
163 		nc->legacy.chip_delay = board->chip_delay;  in orion_nand_probe()
165 	WARN(board->width > 16,  in orion_nand_probe()
167 		board->width);  in orion_nand_probe()
169 	if (board->width == 16)  in orion_nand_probe()
170 		nc->options |= NAND_BUSWIDTH_16;  in orion_nand_probe()
176 	info->clk = devm_clk_get(&pdev->dev, NULL);  in orion_nand_probe()
177 	if (IS_ERR(info->clk)) {  in orion_nand_probe()
178 		ret = PTR_ERR(info->clk);  in orion_nand_probe()
179 		if (ret == -ENOENT) {  in orion_nand_probe()
180 			info->clk = NULL;  in orion_nand_probe()
182 			dev_err(&pdev->dev, "failed to get clock!\n");  in orion_nand_probe()
187 	ret = clk_prepare_enable(info->clk);  in orion_nand_probe()
189 		dev_err(&pdev->dev, "failed to prepare clock!\n");  in orion_nand_probe()
197 	mtd->name = "orion_nand";  in orion_nand_probe()
198 	ret = mtd_device_register(mtd, board->parts, board->nr_parts);  in orion_nand_probe()
207 	clk_disable_unprepare(info->clk);  in orion_nand_probe()
214 	struct nand_chip *chip = &info->chip;  in orion_nand_remove()
222 	clk_disable_unprepare(info->clk);  in orion_nand_remove()
229 	{ .compatible = "marvell,orion-nand", },
247 MODULE_DESCRIPTION("NAND glue for Orion platforms");