common: Drop linux/bitops.h from common header
[platform/kernel/u-boot.git] / drivers / mtd / spi / sf_internal.h
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * SPI flash internal definitions
4  *
5  * Copyright (C) 2008 Atmel Corporation
6  * Copyright (C) 2013 Jagannadha Sutradharudu Teki, Xilinx Inc.
7  */
8
9 #ifndef _SF_INTERNAL_H_
10 #define _SF_INTERNAL_H_
11
12 #include <linux/bitops.h>
13 #include <linux/types.h>
14 #include <linux/compiler.h>
15
16 #define SPI_NOR_MAX_ID_LEN      6
17 #define SPI_NOR_MAX_ADDR_WIDTH  4
18
19 struct flash_info {
20 #if !CONFIG_IS_ENABLED(SPI_FLASH_TINY)
21         char            *name;
22 #endif
23
24         /*
25          * This array stores the ID bytes.
26          * The first three bytes are the JEDIC ID.
27          * JEDEC ID zero means "no ID" (mostly older chips).
28          */
29         u8              id[SPI_NOR_MAX_ID_LEN];
30         u8              id_len;
31
32         /* The size listed here is what works with SPINOR_OP_SE, which isn't
33          * necessarily called a "sector" by the vendor.
34          */
35         unsigned int    sector_size;
36         u16             n_sectors;
37
38         u16             page_size;
39         u16             addr_width;
40
41         u32             flags;
42 #define SECT_4K                 BIT(0)  /* SPINOR_OP_BE_4K works uniformly */
43 #define SPI_NOR_NO_ERASE        BIT(1)  /* No erase command needed */
44 #define SST_WRITE               BIT(2)  /* use SST byte programming */
45 #define SPI_NOR_NO_FR           BIT(3)  /* Can't do fastread */
46 #define SECT_4K_PMC             BIT(4)  /* SPINOR_OP_BE_4K_PMC works uniformly */
47 #define SPI_NOR_DUAL_READ       BIT(5)  /* Flash supports Dual Read */
48 #define SPI_NOR_QUAD_READ       BIT(6)  /* Flash supports Quad Read */
49 #define USE_FSR                 BIT(7)  /* use flag status register */
50 #define SPI_NOR_HAS_LOCK        BIT(8)  /* Flash supports lock/unlock via SR */
51 #define SPI_NOR_HAS_TB          BIT(9)  /*
52                                          * Flash SR has Top/Bottom (TB) protect
53                                          * bit. Must be used with
54                                          * SPI_NOR_HAS_LOCK.
55                                          */
56 #define SPI_S3AN                BIT(10) /*
57                                          * Xilinx Spartan 3AN In-System Flash
58                                          * (MFR cannot be used for probing
59                                          * because it has the same value as
60                                          * ATMEL flashes)
61                                          */
62 #define SPI_NOR_4B_OPCODES      BIT(11) /*
63                                          * Use dedicated 4byte address op codes
64                                          * to support memory size above 128Mib.
65                                          */
66 #define NO_CHIP_ERASE           BIT(12) /* Chip does not support chip erase */
67 #define SPI_NOR_SKIP_SFDP       BIT(13) /* Skip parsing of SFDP tables */
68 #define USE_CLSR                BIT(14) /* use CLSR command */
69 #define SPI_NOR_HAS_SST26LOCK   BIT(15) /* Flash supports lock/unlock via BPR */
70 #define SPI_NOR_OCTAL_READ      BIT(16) /* Flash supports Octal Read */
71 };
72
73 extern const struct flash_info spi_nor_ids[];
74
75 #define JEDEC_MFR(info) ((info)->id[0])
76 #define JEDEC_ID(info)          (((info)->id[1]) << 8 | ((info)->id[2]))
77
78 /* Get software write-protect value (BP bits) */
79 int spi_flash_cmd_get_sw_write_prot(struct spi_flash *flash);
80
81
82 #if CONFIG_IS_ENABLED(SPI_FLASH_MTD)
83 int spi_flash_mtd_register(struct spi_flash *flash);
84 void spi_flash_mtd_unregister(void);
85 #endif
86 #endif /* _SF_INTERNAL_H_ */