28  * @this:	NAND chip object
32 static u_char au_read_byte(struct nand_chip *this)  in au_read_byte()  argument
34 	u_char ret = readb(this->legacy.IO_ADDR_R);  in au_read_byte()
41  * @this:	NAND chip object
46 static void au_write_byte(struct nand_chip *this, u_char byte)  in au_write_byte()  argument
48 	writeb(byte, this->legacy.IO_ADDR_W);  in au_write_byte()
54  * @this:	NAND chip object
58 static u_char au_read_byte16(struct nand_chip *this)  in au_read_byte16()  argument
60 	u_char ret = (u_char) cpu_to_le16(readw(this->legacy.IO_ADDR_R));  in au_read_byte16()
67  * @this:	NAND chip object
72 static void au_write_byte16(struct nand_chip *this, u_char byte)  in au_write_byte16()  argument
74 	writew(le16_to_cpu((u16) byte), this->legacy.IO_ADDR_W);  in au_write_byte16()
80  * @this:	NAND chip object
86 static void au_write_buf(struct nand_chip *this, const u_char *buf, int len)  in au_write_buf()  argument
91 		writeb(buf[i], this->legacy.IO_ADDR_W);  in au_write_buf()
98  * @this:	NAND chip object
104 static void au_read_buf(struct nand_chip *this, u_char *buf, int len)  in au_read_buf()  argument
109 		buf[i] = readb(this->legacy.IO_ADDR_R);  in au_read_buf()
116  * @this:	NAND chip object
122 static void au_write_buf16(struct nand_chip *this, const u_char *buf, int len)  in au_write_buf16()  argument
129 		writew(p[i], this->legacy.IO_ADDR_W);  in au_write_buf16()
137  * @this:	NAND chip object
143 static void au_read_buf16(struct nand_chip *this, u_char *buf, int len)  in au_read_buf16()  argument
150 		p[i] = readw(this->legacy.IO_ADDR_R);  in au_read_buf16()
170 	struct nand_chip *this = mtd_to_nand(mtd);  in au1550_hwcontrol()  local
171 	struct au1550nd_ctx *ctx = container_of(this, struct au1550nd_ctx,  in au1550_hwcontrol()
177 		this->legacy.IO_ADDR_W = ctx->base + MEM_STNAND_CMD;  in au1550_hwcontrol()
181 		this->legacy.IO_ADDR_W = ctx->base + MEM_STNAND_DATA;  in au1550_hwcontrol()
185 		this->legacy.IO_ADDR_W = ctx->base + MEM_STNAND_ADDR;  in au1550_hwcontrol()
189 		this->legacy.IO_ADDR_W = ctx->base + MEM_STNAND_DATA;  in au1550_hwcontrol()
190 		/* FIXME: Nobody knows why this is necessary,  in au1550_hwcontrol()
206 	this->legacy.IO_ADDR_R = this->legacy.IO_ADDR_W;  in au1550_hwcontrol()
211 int au1550_device_ready(struct nand_chip *this)  in au1550_device_ready()  argument
218  *	Forbid driving -CE manually permitting the NAND controller to do this.
225  * @this:	NAND chip object
228 static void au1550_select_chip(struct nand_chip *this, int chip)  in au1550_select_chip()  argument
234  * @this:	NAND chip object
236  * @column:	the column address for this command, -1 if none
237  * @page_addr:	the page address for this command, -1 if none
239 static void au1550_command(struct nand_chip *this, unsigned command,  in au1550_command()  argument
242 	struct mtd_info *mtd = nand_to_mtd(this);  in au1550_command()
243 	struct au1550nd_ctx *ctx = container_of(this, struct au1550nd_ctx,  in au1550_command()
267 		ctx->write_byte(this, readcmd);  in au1550_command()
269 	ctx->write_byte(this, command);  in au1550_command()
280 			if (this->options & NAND_BUSWIDTH_16 &&  in au1550_command()
283 			ctx->write_byte(this, column);  in au1550_command()
286 			ctx->write_byte(this, (u8)(page_addr & 0xff));  in au1550_command()
295 				 * are allowed while we do this as we don't  in au1550_command()
304 			ctx->write_byte(this, (u8)(page_addr >> 8));  in au1550_command()
306 			if (this->options & NAND_ROW_ADDR_3)  in au1550_command()
307 				ctx->write_byte(this,  in au1550_command()
340 		for (i = this->legacy.chip_delay;  in au1550_command()
341 		     !this->legacy.dev_ready(this) && i > 0; --i)  in au1550_command()
349 	/* Apply this short delay always to ensure that we do wait tWB. */  in au1550_command()
352 	while(!this->legacy.dev_ready(this));  in au1550_command()
365 		/* figure out the decoded range of this CS */  in find_nand_cs()
380 	struct nand_chip *this;  in au1550nd_probe()  local
414 	this = &ctx->chip;  in au1550nd_probe()
415 	mtd = nand_to_mtd(this);  in au1550nd_probe()
427 	this->legacy.dev_ready = au1550_device_ready;  in au1550nd_probe()
428 	this->legacy.select_chip = au1550_select_chip;  in au1550nd_probe()
429 	this->legacy.cmdfunc = au1550_command;  in au1550nd_probe()
432 	this->legacy.chip_delay = 30;  in au1550nd_probe()
433 	this->ecc.mode = NAND_ECC_SOFT;  in au1550nd_probe()
434 	this->ecc.algo = NAND_ECC_HAMMING;  in au1550nd_probe()
437 		this->options |= NAND_BUSWIDTH_16;  in au1550nd_probe()
439 	this->legacy.read_byte = (pd->devwidth) ? au_read_byte16 : au_read_byte;  in au1550nd_probe()
441 	this->legacy.write_buf = (pd->devwidth) ? au_write_buf16 : au_write_buf;  in au1550nd_probe()
442 	this->legacy.read_buf = (pd->devwidth) ? au_read_buf16 : au_read_buf;  in au1550nd_probe()
444 	ret = nand_scan(this, 1);  in au1550nd_probe()