1 // SPDX-License-Identifier: GPL-2.0
7 #include <linux/mtd/spi-nor.h>
37 	if (bfpt_header->major == SFDP_JESD216_MAJOR &&  in w25q128_post_bfpt_fixups()
38 	    bfpt_header->minor == SFDP_JESD216_MINOR &&  in w25q128_post_bfpt_fixups()
39 	    nor->params->size == SZ_2M &&  in w25q128_post_bfpt_fixups()
40 	    nor->params->erase_map.regions[0].size == SZ_2M) {  in w25q128_post_bfpt_fixups()
41 		nor->params->size = SZ_16M;  in w25q128_post_bfpt_fixups()
42 		nor->params->erase_map.regions[0].size = SZ_16M;  in w25q128_post_bfpt_fixups()
59 	 * Unfortunately, Winbond has re-used the same JEDEC ID for both  in w25q256_post_bfpt_fixups()
65 	if (bfpt_header->major == SFDP_JESD216_MAJOR &&  in w25q256_post_bfpt_fixups()
66 	    bfpt_header->minor == SFDP_JESD216A_MINOR)  in w25q256_post_bfpt_fixups()
67 		nor->flags |= SNOR_F_4B_OPCODES;  in w25q256_post_bfpt_fixups()
77  * winbond_nor_select_die() - Set active die.
82  * to the user, except that some chips may experience time deviation when
87  * Return: 0 on success, -errno otherwise.
93 	nor->bouncebuf[0] = die;  in winbond_nor_select_die()
95 	if (nor->spimem) {  in winbond_nor_select_die()
96 		struct spi_mem_op op = WINBOND_NOR_SELDIE_OP(nor->bouncebuf);  in winbond_nor_select_die()
98 		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);  in winbond_nor_select_die()
100 		ret = spi_mem_exec_op(nor->spimem, &op);  in winbond_nor_select_die()
104 						       nor->bouncebuf, 1);  in winbond_nor_select_die()
108 		dev_dbg(nor->dev, "error %d selecting die %d\n", ret, die);  in winbond_nor_select_die()
117 	for (i = 0; i < nor->params->n_dice; i++) {  in winbond_nor_multi_die_ready()
139 	nor->params->n_dice = nor->params->size / SZ_64M;  in winbond_nor_multi_die_post_sfdp_fixups()
140 	nor->params->ready = winbond_nor_multi_die_ready;  in winbond_nor_multi_die_post_sfdp_fixups()
260 		.otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
281 		.otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
284 		.name = "w25q16jv-im/jm",
323 		.otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
345 		.otp = SNOR_OTP(256, 3, 0x1000, 0x1000),
350  * winbond_nor_write_ear() - Write Extended Address Register.
354  * Return: 0 on success, -errno otherwise.
360 	nor->bouncebuf[0] = ear;  in winbond_nor_write_ear()
362 	if (nor->spimem) {  in winbond_nor_write_ear()
363 		struct spi_mem_op op = WINBOND_NOR_WREAR_OP(nor->bouncebuf);  in winbond_nor_write_ear()
365 		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);  in winbond_nor_write_ear()
367 		ret = spi_mem_exec_op(nor->spimem, &op);  in winbond_nor_write_ear()
371 						       nor->bouncebuf, 1);  in winbond_nor_write_ear()
375 		dev_dbg(nor->dev, "error %d writing EAR\n", ret);  in winbond_nor_write_ear()
381  * winbond_nor_set_4byte_addr_mode() - Set 4-byte address mode for Winbond
384  * @enable:	true to enter the 4-byte address mode, false to exit the 4-byte
387  * Return: 0 on success, -errno otherwise.
399 	 * Register to be set to 1, so all 3-byte-address reads come from the  in winbond_nor_set_4byte_addr_mode()
423 	struct spi_nor_flash_parameter *params = nor->params;  in winbond_nor_late_init()
425 	if (params->otp.org)  in winbond_nor_late_init()
426 		params->otp.ops = &winbond_nor_otp_ops;  in winbond_nor_late_init()
430 	 * to zero when exiting the 4-Byte Address Mode, at least for W25Q256FV.  in winbond_nor_late_init()
436 	params->set_4byte_addr_mode = winbond_nor_set_4byte_addr_mode;  in winbond_nor_late_init()