38 static int m25p80_read_reg(struct spi_nor *nor, u8 code, u8 *val, int len)  in m25p80_read_reg()  argument
40 	struct m25p *flash = nor->priv;  in m25p80_read_reg()
51 static void m25p_addr2cmd(struct spi_nor *nor, unsigned int addr, u8 *cmd)  in m25p_addr2cmd()  argument
54 	cmd[1] = addr >> (nor->addr_width * 8 -  8);  in m25p_addr2cmd()
55 	cmd[2] = addr >> (nor->addr_width * 8 - 16);  in m25p_addr2cmd()
56 	cmd[3] = addr >> (nor->addr_width * 8 - 24);  in m25p_addr2cmd()
57 	cmd[4] = addr >> (nor->addr_width * 8 - 32);  in m25p_addr2cmd()
60 static int m25p_cmdsz(struct spi_nor *nor)  in m25p_cmdsz()  argument
62 	return 1 + nor->addr_width;  in m25p_cmdsz()
65 static int m25p80_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len,  in m25p80_write_reg()  argument
68 	struct m25p *flash = nor->priv;  in m25p80_write_reg()
78 static void m25p80_write(struct spi_nor *nor, loff_t to, size_t len,  in m25p80_write()  argument
81 	struct m25p *flash = nor->priv;  in m25p80_write()
85 	int cmd_sz = m25p_cmdsz(nor);  in m25p80_write()
89 	if (nor->program_opcode == SPINOR_OP_AAI_WP && nor->sst_write_second)  in m25p80_write()
92 	flash->command[0] = nor->program_opcode;  in m25p80_write()
93 	m25p_addr2cmd(nor, to, flash->command);  in m25p80_write()
108 static inline unsigned int m25p80_rx_nbits(struct spi_nor *nor)  in m25p80_rx_nbits()  argument
110 	switch (nor->flash_read) {  in m25p80_rx_nbits()
124 static int m25p80_read(struct spi_nor *nor, loff_t from, size_t len,  in m25p80_read()  argument
127 	struct m25p *flash = nor->priv;  in m25p80_read()
131 	unsigned int dummy = nor->read_dummy;  in m25p80_read()
139 	flash->command[0] = nor->read_opcode;  in m25p80_read()
140 	m25p_addr2cmd(nor, from, flash->command);  in m25p80_read()
143 	t[0].len = m25p_cmdsz(nor) + dummy;  in m25p80_read()
147 	t[1].rx_nbits = m25p80_rx_nbits(nor);  in m25p80_read()
153 	*retlen = m.actual_length - m25p_cmdsz(nor) - dummy;  in m25p80_read()
157 static int m25p80_erase(struct spi_nor *nor, loff_t offset)  in m25p80_erase()  argument
159 	struct m25p *flash = nor->priv;  in m25p80_erase()
161 	dev_dbg(nor->dev, "%dKiB at 0x%08x\n",  in m25p80_erase()
165 	flash->command[0] = nor->erase_opcode;  in m25p80_erase()
166 	m25p_addr2cmd(nor, offset, flash->command);  in m25p80_erase()
168 	spi_write(flash->spi, flash->command, m25p_cmdsz(nor));  in m25p80_erase()
183 	struct spi_nor *nor;  in m25p_probe()  local
194 	nor = &flash->spi_nor;  in m25p_probe()
197 	nor->read = m25p80_read;  in m25p_probe()
198 	nor->write = m25p80_write;  in m25p_probe()
199 	nor->erase = m25p80_erase;  in m25p_probe()
200 	nor->write_reg = m25p80_write_reg;  in m25p_probe()
201 	nor->read_reg = m25p80_read_reg;  in m25p_probe()
203 	nor->dev = &spi->dev;  in m25p_probe()
204 	nor->mtd = &flash->mtd;  in m25p_probe()
205 	nor->priv = flash;  in m25p_probe()
208 	flash->mtd.priv = nor;  in m25p_probe()
231 	ret = spi_nor_scan(nor, flash_name, mode);  in m25p_probe()