| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (C) 2005, Intec Automation Inc. |
| * Copyright (C) 2014, Freescale Semiconductor, Inc. |
| */ |
| |
| #include <linux/mtd/spi-nor.h> |
| |
| #include "core.h" |
| |
| /* flash_info mfr_flag. Used to clear sticky prorietary SR bits. */ |
| #define USE_CLSR BIT(0) |
| |
| #define SPINOR_OP_CLSR 0x30 /* Clear status register 1 */ |
| #define SPINOR_OP_RD_ANY_REG 0x65 /* Read any register */ |
| #define SPINOR_OP_WR_ANY_REG 0x71 /* Write any register */ |
| #define SPINOR_REG_CYPRESS_CFR1V 0x00800002 |
| #define SPINOR_REG_CYPRESS_CFR1V_QUAD_EN BIT(1) /* Quad Enable */ |
| #define SPINOR_REG_CYPRESS_CFR2V 0x00800003 |
| #define SPINOR_REG_CYPRESS_CFR2V_MEMLAT_11_24 0xb |
| #define SPINOR_REG_CYPRESS_CFR3V 0x00800004 |
| #define SPINOR_REG_CYPRESS_CFR3V_PGSZ BIT(4) /* Page size. */ |
| #define SPINOR_REG_CYPRESS_CFR5V 0x00800006 |
| #define SPINOR_REG_CYPRESS_CFR5V_OCT_DTR_EN 0x3 |
| #define SPINOR_REG_CYPRESS_CFR5V_OCT_DTR_DS 0 |
| #define SPINOR_OP_CYPRESS_RD_FAST 0xee |
| |
| /* Cypress SPI NOR flash operations. */ |
| #define CYPRESS_NOR_WR_ANY_REG_OP(naddr, addr, ndata, buf) \ |
| SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_WR_ANY_REG, 0), \ |
| SPI_MEM_OP_ADDR(naddr, addr, 0), \ |
| SPI_MEM_OP_NO_DUMMY, \ |
| SPI_MEM_OP_DATA_OUT(ndata, buf, 0)) |
| |
| #define CYPRESS_NOR_RD_ANY_REG_OP(naddr, addr, buf) \ |
| SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_RD_ANY_REG, 0), \ |
| SPI_MEM_OP_ADDR(naddr, addr, 0), \ |
| SPI_MEM_OP_NO_DUMMY, \ |
| SPI_MEM_OP_DATA_IN(1, buf, 0)) |
| |
| #define SPANSION_CLSR_OP \ |
| SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_CLSR, 0), \ |
| SPI_MEM_OP_NO_ADDR, \ |
| SPI_MEM_OP_NO_DUMMY, \ |
| SPI_MEM_OP_NO_DATA) |
| |
| static int cypress_nor_octal_dtr_en(struct spi_nor *nor) |
| { |
| struct spi_mem_op op; |
| u8 *buf = nor->bouncebuf; |
| int ret; |
| |
| /* Use 24 dummy cycles for memory array reads. */ |
| *buf = SPINOR_REG_CYPRESS_CFR2V_MEMLAT_11_24; |
| op = (struct spi_mem_op) |
| CYPRESS_NOR_WR_ANY_REG_OP(3, SPINOR_REG_CYPRESS_CFR2V, 1, buf); |
| |
| ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto); |
| if (ret) |
| return ret; |
| |
| nor->read_dummy = 24; |
| |
| /* Set the octal and DTR enable bits. */ |
| buf[0] = SPINOR_REG_CYPRESS_CFR5V_OCT_DTR_EN; |
| op = (struct spi_mem_op) |
| CYPRESS_NOR_WR_ANY_REG_OP(3, SPINOR_REG_CYPRESS_CFR5V, 1, buf); |
| |
| ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto); |
| if (ret) |
| return ret; |
| |
| /* Read flash ID to make sure the switch was successful. */ |
| ret = spi_nor_read_id(nor, 4, 3, buf, SNOR_PROTO_8_8_8_DTR); |
| if (ret) { |
| dev_dbg(nor->dev, "error %d reading JEDEC ID after enabling 8D-8D-8D mode\n", ret); |
| return ret; |
| } |
| |
| if (memcmp(buf, nor->info->id, nor->info->id_len)) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| static int cypress_nor_octal_dtr_dis(struct spi_nor *nor) |
| { |
| struct spi_mem_op op; |
| u8 *buf = nor->bouncebuf; |
| int ret; |
| |
| /* |
| * The register is 1-byte wide, but 1-byte transactions are not allowed |
| * in 8D-8D-8D mode. Since there is no register at the next location, |
| * just initialize the value to 0 and let the transaction go on. |
| */ |
| buf[0] = SPINOR_REG_CYPRESS_CFR5V_OCT_DTR_DS; |
| buf[1] = 0; |
| op = (struct spi_mem_op) |
| CYPRESS_NOR_WR_ANY_REG_OP(4, SPINOR_REG_CYPRESS_CFR5V, 2, buf); |
| ret = spi_nor_write_any_volatile_reg(nor, &op, SNOR_PROTO_8_8_8_DTR); |
| if (ret) |
| return ret; |
| |
| /* Read flash ID to make sure the switch was successful. */ |
| ret = spi_nor_read_id(nor, 0, 0, buf, SNOR_PROTO_1_1_1); |
| if (ret) { |
| dev_dbg(nor->dev, "error %d reading JEDEC ID after disabling 8D-8D-8D mode\n", ret); |
| return ret; |
| } |
| |
| if (memcmp(buf, nor->info->id, nor->info->id_len)) |
| return -EINVAL; |
| |
| return 0; |
| } |
| |
| /** |
| * cypress_nor_quad_enable_volatile() - enable Quad I/O mode in volatile |
| * register. |
| * @nor: pointer to a 'struct spi_nor' |
| * |
| * It is recommended to update volatile registers in the field application due |
| * to a risk of the non-volatile registers corruption by power interrupt. This |
| * function sets Quad Enable bit in CFR1 volatile. If users set the Quad Enable |
| * bit in the CFR1 non-volatile in advance (typically by a Flash programmer |
| * before mounting Flash on PCB), the Quad Enable bit in the CFR1 volatile is |
| * also set during Flash power-up. |
| * |
| * Return: 0 on success, -errno otherwise. |
| */ |
| static int cypress_nor_quad_enable_volatile(struct spi_nor *nor) |
| { |
| struct spi_mem_op op; |
| u8 addr_mode_nbytes = nor->params->addr_mode_nbytes; |
| u8 cfr1v_written; |
| int ret; |
| |
| op = (struct spi_mem_op) |
| CYPRESS_NOR_RD_ANY_REG_OP(addr_mode_nbytes, |
| SPINOR_REG_CYPRESS_CFR1V, |
| nor->bouncebuf); |
| |
| ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto); |
| if (ret) |
| return ret; |
| |
| if (nor->bouncebuf[0] & SPINOR_REG_CYPRESS_CFR1V_QUAD_EN) |
| return 0; |
| |
| /* Update the Quad Enable bit. */ |
| nor->bouncebuf[0] |= SPINOR_REG_CYPRESS_CFR1V_QUAD_EN; |
| op = (struct spi_mem_op) |
| CYPRESS_NOR_WR_ANY_REG_OP(addr_mode_nbytes, |
| SPINOR_REG_CYPRESS_CFR1V, 1, |
| nor->bouncebuf); |
| ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto); |
| if (ret) |
| return ret; |
| |
| cfr1v_written = nor->bouncebuf[0]; |
| |
| /* Read back and check it. */ |
| op = (struct spi_mem_op) |
| CYPRESS_NOR_RD_ANY_REG_OP(addr_mode_nbytes, |
| SPINOR_REG_CYPRESS_CFR1V, |
| nor->bouncebuf); |
| ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto); |
| if (ret) |
| return ret; |
| |
| if (nor->bouncebuf[0] != cfr1v_written) { |
| dev_err(nor->dev, "CFR1: Read back test failed\n"); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * cypress_nor_set_page_size() - Set page size which corresponds to the flash |
| * configuration. |
| * @nor: pointer to a 'struct spi_nor' |
| * |
| * The BFPT table advertises a 512B or 256B page size depending on part but the |
| * page size is actually configurable (with the default being 256B). Read from |
| * CFR3V[4] and set the correct size. |
| * |
| * Return: 0 on success, -errno otherwise. |
| */ |
| static int cypress_nor_set_page_size(struct spi_nor *nor) |
| { |
| struct spi_mem_op op = |
| CYPRESS_NOR_RD_ANY_REG_OP(3, SPINOR_REG_CYPRESS_CFR3V, |
| nor->bouncebuf); |
| int ret; |
| |
| ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto); |
| if (ret) |
| return ret; |
| |
| if (nor->bouncebuf[0] & SPINOR_REG_CYPRESS_CFR3V_PGSZ) |
| nor->params->page_size = 512; |
| else |
| nor->params->page_size = 256; |
| |
| return 0; |
| } |
| |
| static int |
| s25hx_t_post_bfpt_fixup(struct spi_nor *nor, |
| const struct sfdp_parameter_header *bfpt_header, |
| const struct sfdp_bfpt *bfpt) |
| { |
| /* Replace Quad Enable with volatile version */ |
| nor->params->quad_enable = cypress_nor_quad_enable_volatile; |
| |
| return cypress_nor_set_page_size(nor); |
| } |
| |
| static void s25hx_t_post_sfdp_fixup(struct spi_nor *nor) |
| { |
| struct spi_nor_erase_type *erase_type = |
| nor->params->erase_map.erase_type; |
| unsigned int i; |
| |
| /* |
| * In some parts, 3byte erase opcodes are advertised by 4BAIT. |
| * Convert them to 4byte erase opcodes. |
| */ |
| for (i = 0; i < SNOR_ERASE_TYPE_MAX; i++) { |
| switch (erase_type[i].opcode) { |
| case SPINOR_OP_SE: |
| erase_type[i].opcode = SPINOR_OP_SE_4B; |
| break; |
| case SPINOR_OP_BE_4K: |
| erase_type[i].opcode = SPINOR_OP_BE_4K_4B; |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| static void s25hx_t_late_init(struct spi_nor *nor) |
| { |
| struct spi_nor_flash_parameter *params = nor->params; |
| |
| /* Fast Read 4B requires mode cycles */ |
| params->reads[SNOR_CMD_READ_FAST].num_mode_clocks = 8; |
| |
| /* The writesize should be ECC data unit size */ |
| params->writesize = 16; |
| } |
| |
| static struct spi_nor_fixups s25hx_t_fixups = { |
| .post_bfpt = s25hx_t_post_bfpt_fixup, |
| .post_sfdp = s25hx_t_post_sfdp_fixup, |
| .late_init = s25hx_t_late_init, |
| }; |
| |
| /** |
| * cypress_nor_octal_dtr_enable() - Enable octal DTR on Cypress flashes. |
| * @nor: pointer to a 'struct spi_nor' |
| * @enable: whether to enable or disable Octal DTR |
| * |
| * This also sets the memory access latency cycles to 24 to allow the flash to |
| * run at up to 200MHz. |
| * |
| * Return: 0 on success, -errno otherwise. |
| */ |
| static int cypress_nor_octal_dtr_enable(struct spi_nor *nor, bool enable) |
| { |
| return enable ? cypress_nor_octal_dtr_en(nor) : |
| cypress_nor_octal_dtr_dis(nor); |
| } |
| |
| static void s28hs512t_default_init(struct spi_nor *nor) |
| { |
| nor->params->octal_dtr_enable = cypress_nor_octal_dtr_enable; |
| nor->params->writesize = 16; |
| } |
| |
| static void s28hs512t_post_sfdp_fixup(struct spi_nor *nor) |
| { |
| /* |
| * On older versions of the flash the xSPI Profile 1.0 table has the |
| * 8D-8D-8D Fast Read opcode as 0x00. But it actually should be 0xEE. |
| */ |
| if (nor->params->reads[SNOR_CMD_READ_8_8_8_DTR].opcode == 0) |
| nor->params->reads[SNOR_CMD_READ_8_8_8_DTR].opcode = |
| SPINOR_OP_CYPRESS_RD_FAST; |
| |
| /* This flash is also missing the 4-byte Page Program opcode bit. */ |
| spi_nor_set_pp_settings(&nor->params->page_programs[SNOR_CMD_PP], |
| SPINOR_OP_PP_4B, SNOR_PROTO_1_1_1); |
| /* |
| * Since xSPI Page Program opcode is backward compatible with |
| * Legacy SPI, use Legacy SPI opcode there as well. |
| */ |
| spi_nor_set_pp_settings(&nor->params->page_programs[SNOR_CMD_PP_8_8_8_DTR], |
| SPINOR_OP_PP_4B, SNOR_PROTO_8_8_8_DTR); |
| |
| /* |
| * The xSPI Profile 1.0 table advertises the number of additional |
| * address bytes needed for Read Status Register command as 0 but the |
| * actual value for that is 4. |
| */ |
| nor->params->rdsr_addr_nbytes = 4; |
| } |
| |
| static int s28hs512t_post_bfpt_fixup(struct spi_nor *nor, |
| const struct sfdp_parameter_header *bfpt_header, |
| const struct sfdp_bfpt *bfpt) |
| { |
| return cypress_nor_set_page_size(nor); |
| } |
| |
| static const struct spi_nor_fixups s28hs512t_fixups = { |
| .default_init = s28hs512t_default_init, |
| .post_sfdp = s28hs512t_post_sfdp_fixup, |
| .post_bfpt = s28hs512t_post_bfpt_fixup, |
| }; |
| |
| static int |
| s25fs_s_nor_post_bfpt_fixups(struct spi_nor *nor, |
| const struct sfdp_parameter_header *bfpt_header, |
| const struct sfdp_bfpt *bfpt) |
| { |
| /* |
| * The S25FS-S chip family reports 512-byte pages in BFPT but |
| * in reality the write buffer still wraps at the safe default |
| * of 256 bytes. Overwrite the page size advertised by BFPT |
| * to get the writes working. |
| */ |
| nor->params->page_size = 256; |
| |
| return 0; |
| } |
| |
| static const struct spi_nor_fixups s25fs_s_nor_fixups = { |
| .post_bfpt = s25fs_s_nor_post_bfpt_fixups, |
| }; |
| |
| static const struct flash_info spansion_nor_parts[] = { |
| /* Spansion/Cypress -- single (large) sector size only, at least |
| * for the chips listed here (without boot sectors). |
| */ |
| { "s25sl032p", INFO(0x010215, 0x4d00, 64 * 1024, 64) |
| NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, |
| { "s25sl064p", INFO(0x010216, 0x4d00, 64 * 1024, 128) |
| NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, |
| { "s25fl128s0", INFO6(0x012018, 0x4d0080, 256 * 1024, 64) |
| NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| MFR_FLAGS(USE_CLSR) |
| }, |
| { "s25fl128s1", INFO6(0x012018, 0x4d0180, 64 * 1024, 256) |
| NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| MFR_FLAGS(USE_CLSR) |
| }, |
| { "s25fl256s0", INFO6(0x010219, 0x4d0080, 256 * 1024, 128) |
| NO_SFDP_FLAGS(SPI_NOR_SKIP_SFDP | SPI_NOR_DUAL_READ | |
| SPI_NOR_QUAD_READ) |
| MFR_FLAGS(USE_CLSR) |
| }, |
| { "s25fl256s1", INFO6(0x010219, 0x4d0180, 64 * 1024, 512) |
| NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| MFR_FLAGS(USE_CLSR) |
| }, |
| { "s25fl512s", INFO6(0x010220, 0x4d0080, 256 * 1024, 256) |
| FLAGS(SPI_NOR_HAS_LOCK) |
| NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| MFR_FLAGS(USE_CLSR) |
| }, |
| { "s25fs128s1", INFO6(0x012018, 0x4d0181, 64 * 1024, 256) |
| NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| MFR_FLAGS(USE_CLSR) |
| .fixups = &s25fs_s_nor_fixups, }, |
| { "s25fs256s0", INFO6(0x010219, 0x4d0081, 256 * 1024, 128) |
| NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| MFR_FLAGS(USE_CLSR) |
| }, |
| { "s25fs256s1", INFO6(0x010219, 0x4d0181, 64 * 1024, 512) |
| NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| MFR_FLAGS(USE_CLSR) |
| }, |
| { "s25fs512s", INFO6(0x010220, 0x4d0081, 256 * 1024, 256) |
| NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| MFR_FLAGS(USE_CLSR) |
| .fixups = &s25fs_s_nor_fixups, }, |
| { "s25sl12800", INFO(0x012018, 0x0300, 256 * 1024, 64) }, |
| { "s25sl12801", INFO(0x012018, 0x0301, 64 * 1024, 256) }, |
| { "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024, 64) |
| NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| MFR_FLAGS(USE_CLSR) |
| }, |
| { "s25fl129p1", INFO(0x012018, 0x4d01, 64 * 1024, 256) |
| NO_SFDP_FLAGS(SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| MFR_FLAGS(USE_CLSR) |
| }, |
| { "s25sl004a", INFO(0x010212, 0, 64 * 1024, 8) }, |
| { "s25sl008a", INFO(0x010213, 0, 64 * 1024, 16) }, |
| { "s25sl016a", INFO(0x010214, 0, 64 * 1024, 32) }, |
| { "s25sl032a", INFO(0x010215, 0, 64 * 1024, 64) }, |
| { "s25sl064a", INFO(0x010216, 0, 64 * 1024, 128) }, |
| { "s25fl004k", INFO(0xef4013, 0, 64 * 1024, 8) |
| NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | |
| SPI_NOR_QUAD_READ) }, |
| { "s25fl008k", INFO(0xef4014, 0, 64 * 1024, 16) |
| NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | |
| SPI_NOR_QUAD_READ) }, |
| { "s25fl016k", INFO(0xef4015, 0, 64 * 1024, 32) |
| NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | |
| SPI_NOR_QUAD_READ) }, |
| { "s25fl064k", INFO(0xef4017, 0, 64 * 1024, 128) |
| NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | |
| SPI_NOR_QUAD_READ) }, |
| { "s25fl116k", INFO(0x014015, 0, 64 * 1024, 32) |
| NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | |
| SPI_NOR_QUAD_READ) }, |
| { "s25fl132k", INFO(0x014016, 0, 64 * 1024, 64) |
| NO_SFDP_FLAGS(SECT_4K) }, |
| { "s25fl164k", INFO(0x014017, 0, 64 * 1024, 128) |
| NO_SFDP_FLAGS(SECT_4K) }, |
| { "s25fl204k", INFO(0x014013, 0, 64 * 1024, 8) |
| NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ) }, |
| { "s25fl208k", INFO(0x014014, 0, 64 * 1024, 16) |
| NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ) }, |
| { "s25fl064l", INFO(0x016017, 0, 64 * 1024, 128) |
| NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| FIXUP_FLAGS(SPI_NOR_4B_OPCODES) }, |
| { "s25fl128l", INFO(0x016018, 0, 64 * 1024, 256) |
| NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| FIXUP_FLAGS(SPI_NOR_4B_OPCODES) }, |
| { "s25fl256l", INFO(0x016019, 0, 64 * 1024, 512) |
| NO_SFDP_FLAGS(SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) |
| FIXUP_FLAGS(SPI_NOR_4B_OPCODES) }, |
| { "s25hl512t", INFO6(0x342a1a, 0x0f0390, 256 * 1024, 256) |
| PARSE_SFDP |
| MFR_FLAGS(USE_CLSR) |
| .fixups = &s25hx_t_fixups }, |
| { "s25hl01gt", INFO6(0x342a1b, 0x0f0390, 256 * 1024, 512) |
| PARSE_SFDP |
| MFR_FLAGS(USE_CLSR) |
| .fixups = &s25hx_t_fixups }, |
| { "s25hs512t", INFO6(0x342b1a, 0x0f0390, 256 * 1024, 256) |
| PARSE_SFDP |
| MFR_FLAGS(USE_CLSR) |
| .fixups = &s25hx_t_fixups }, |
| { "s25hs01gt", INFO6(0x342b1b, 0x0f0390, 256 * 1024, 512) |
| PARSE_SFDP |
| MFR_FLAGS(USE_CLSR) |
| .fixups = &s25hx_t_fixups }, |
| { "cy15x104q", INFO6(0x042cc2, 0x7f7f7f, 512 * 1024, 1) |
| FLAGS(SPI_NOR_NO_ERASE) }, |
| { "s28hs512t", INFO(0x345b1a, 0, 256 * 1024, 256) |
| NO_SFDP_FLAGS(SECT_4K | SPI_NOR_OCTAL_DTR_READ | |
| SPI_NOR_OCTAL_DTR_PP) |
| .fixups = &s28hs512t_fixups, |
| }, |
| }; |
| |
| /** |
| * spansion_nor_clear_sr() - Clear the Status Register. |
| * @nor: pointer to 'struct spi_nor'. |
| */ |
| static void spansion_nor_clear_sr(struct spi_nor *nor) |
| { |
| int ret; |
| |
| if (nor->spimem) { |
| struct spi_mem_op op = SPANSION_CLSR_OP; |
| |
| spi_nor_spimem_setup_op(nor, &op, nor->reg_proto); |
| |
| ret = spi_mem_exec_op(nor->spimem, &op); |
| } else { |
| ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLSR, |
| NULL, 0); |
| } |
| |
| if (ret) |
| dev_dbg(nor->dev, "error %d clearing SR\n", ret); |
| } |
| |
| /** |
| * spansion_nor_sr_ready_and_clear() - Query the Status Register to see if the |
| * flash is ready for new commands and clear it if there are any errors. |
| * @nor: pointer to 'struct spi_nor'. |
| * |
| * Return: 1 if ready, 0 if not ready, -errno on errors. |
| */ |
| static int spansion_nor_sr_ready_and_clear(struct spi_nor *nor) |
| { |
| int ret; |
| |
| ret = spi_nor_read_sr(nor, nor->bouncebuf); |
| if (ret) |
| return ret; |
| |
| if (nor->bouncebuf[0] & (SR_E_ERR | SR_P_ERR)) { |
| if (nor->bouncebuf[0] & SR_E_ERR) |
| dev_err(nor->dev, "Erase Error occurred\n"); |
| else |
| dev_err(nor->dev, "Programming Error occurred\n"); |
| |
| spansion_nor_clear_sr(nor); |
| |
| /* |
| * WEL bit remains set to one when an erase or page program |
| * error occurs. Issue a Write Disable command to protect |
| * against inadvertent writes that can possibly corrupt the |
| * contents of the memory. |
| */ |
| ret = spi_nor_write_disable(nor); |
| if (ret) |
| return ret; |
| |
| return -EIO; |
| } |
| |
| return !(nor->bouncebuf[0] & SR_WIP); |
| } |
| |
| static void spansion_nor_late_init(struct spi_nor *nor) |
| { |
| if (nor->params->size > SZ_16M) { |
| nor->flags |= SNOR_F_4B_OPCODES; |
| /* No small sector erase for 4-byte command set */ |
| nor->erase_opcode = SPINOR_OP_SE; |
| nor->mtd.erasesize = nor->info->sector_size; |
| } |
| |
| if (nor->info->mfr_flags & USE_CLSR) |
| nor->params->ready = spansion_nor_sr_ready_and_clear; |
| } |
| |
| static const struct spi_nor_fixups spansion_nor_fixups = { |
| .late_init = spansion_nor_late_init, |
| }; |
| |
| const struct spi_nor_manufacturer spi_nor_spansion = { |
| .name = "spansion", |
| .parts = spansion_nor_parts, |
| .nparts = ARRAY_SIZE(spansion_nor_parts), |
| .fixups = &spansion_nor_fixups, |
| }; |