2  * SPI-NOR driver for NXP SPI Flash Interface (SPIFI)
22 #include <linux/mtd/spi-nor.h>
63 	struct spi_nor nor;  member
130 static int nxp_spifi_read_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)  in nxp_spifi_read_reg()  argument
132 	struct nxp_spifi *spifi = nor->priv;  in nxp_spifi_read_reg()
152 static int nxp_spifi_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, int len)  in nxp_spifi_write_reg()  argument
154 	struct nxp_spifi *spifi = nor->priv;  in nxp_spifi_write_reg()
175 static ssize_t nxp_spifi_read(struct spi_nor *nor, loff_t from, size_t len,  in nxp_spifi_read()  argument
178 	struct nxp_spifi *spifi = nor->priv;  in nxp_spifi_read()
190 static ssize_t nxp_spifi_write(struct spi_nor *nor, loff_t to, size_t len,  in nxp_spifi_write()  argument
193 	struct nxp_spifi *spifi = nor->priv;  in nxp_spifi_write()
207 	      SPIFI_CMD_OPCODE(nor->program_opcode) |  in nxp_spifi_write()
208 	      SPIFI_CMD_FRAMEFORM(spifi->nor.addr_width + 1);  in nxp_spifi_write()
221 static int nxp_spifi_erase(struct spi_nor *nor, loff_t offs)  in nxp_spifi_erase()  argument
223 	struct nxp_spifi *spifi = nor->priv;  in nxp_spifi_erase()
234 	      SPIFI_CMD_OPCODE(nor->erase_opcode) |  in nxp_spifi_erase()
235 	      SPIFI_CMD_FRAMEFORM(spifi->nor.addr_width + 1);  in nxp_spifi_erase()
243 	switch (spifi->nor.read_proto) {  in nxp_spifi_setup_memory_cmd()
257 	if (spifi->nor.addr_width < 1 || spifi->nor.addr_width > 4)  in nxp_spifi_setup_memory_cmd()
260 	spifi->mcmd |= SPIFI_CMD_OPCODE(spifi->nor.read_opcode) |  in nxp_spifi_setup_memory_cmd()
261 		       SPIFI_CMD_INTLEN(spifi->nor.read_dummy / 8) |  in nxp_spifi_setup_memory_cmd()
262 		       SPIFI_CMD_FRAMEFORM(spifi->nor.addr_width + 1);  in nxp_spifi_setup_memory_cmd()
267 static void nxp_spifi_dummy_id_read(struct spi_nor *nor)  in nxp_spifi_dummy_id_read()  argument
270 	nor->read_reg(nor, SPINOR_OP_RDID, id, SPI_NOR_MAX_ID_LEN);  in nxp_spifi_dummy_id_read()
336 	spifi->nor.dev   = spifi->dev;  in nxp_spifi_setup_flash()
337 	spi_nor_set_flash_node(&spifi->nor, np);  in nxp_spifi_setup_flash()
338 	spifi->nor.priv  = spifi;  in nxp_spifi_setup_flash()
339 	spifi->nor.read  = nxp_spifi_read;  in nxp_spifi_setup_flash()
340 	spifi->nor.write = nxp_spifi_write;  in nxp_spifi_setup_flash()
341 	spifi->nor.erase = nxp_spifi_erase;  in nxp_spifi_setup_flash()
342 	spifi->nor.read_reg  = nxp_spifi_read_reg;  in nxp_spifi_setup_flash()
343 	spifi->nor.write_reg = nxp_spifi_write_reg;  in nxp_spifi_setup_flash()
354 	nxp_spifi_dummy_id_read(&spifi->nor);  in nxp_spifi_setup_flash()
356 	ret = spi_nor_scan(&spifi->nor, NULL, &hwcaps);  in nxp_spifi_setup_flash()
368 	ret = mtd_device_register(&spifi->nor.mtd, NULL, 0);  in nxp_spifi_setup_flash()
458 	mtd_device_unregister(&spifi->nor.mtd);  in nxp_spifi_remove()