1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __BCM47XXSFLASH_H
3 #define __BCM47XXSFLASH_H
4 
5 #include <linux/mtd/mtd.h>
6 
7 #define BCM47XXSFLASH_WINDOW_SZ			SZ_16M
8 
9 /* Used for ST flashes only. */
10 #define OPCODE_ST_WREN		0x0006		/* Write Enable */
11 #define OPCODE_ST_WRDIS		0x0004		/* Write Disable */
12 #define OPCODE_ST_RDSR		0x0105		/* Read Status Register */
13 #define OPCODE_ST_WRSR		0x0101		/* Write Status Register */
14 #define OPCODE_ST_READ		0x0303		/* Read Data Bytes */
15 #define OPCODE_ST_PP		0x0302		/* Page Program */
16 #define OPCODE_ST_SE		0x02d8		/* Sector Erase */
17 #define OPCODE_ST_BE		0x00c7		/* Bulk Erase */
18 #define OPCODE_ST_DP		0x00b9		/* Deep Power-down */
19 #define OPCODE_ST_RES		0x03ab		/* Read Electronic Signature */
20 #define OPCODE_ST_CSA		0x1000		/* Keep chip select asserted */
21 #define OPCODE_ST_SSE		0x0220		/* Sub-sector Erase */
22 #define OPCODE_ST_READ4B	0x6313		/* Read Data Bytes in 4Byte addressing mode */
23 
24 /* Used for Atmel flashes only. */
25 #define OPCODE_AT_READ				0x07e8
26 #define OPCODE_AT_PAGE_READ			0x07d2
27 #define OPCODE_AT_STATUS			0x01d7
28 #define OPCODE_AT_BUF1_WRITE			0x0384
29 #define OPCODE_AT_BUF2_WRITE			0x0387
30 #define OPCODE_AT_BUF1_ERASE_PROGRAM		0x0283
31 #define OPCODE_AT_BUF2_ERASE_PROGRAM		0x0286
32 #define OPCODE_AT_BUF1_PROGRAM			0x0288
33 #define OPCODE_AT_BUF2_PROGRAM			0x0289
34 #define OPCODE_AT_PAGE_ERASE			0x0281
35 #define OPCODE_AT_BLOCK_ERASE			0x0250
36 #define OPCODE_AT_BUF1_WRITE_ERASE_PROGRAM	0x0382
37 #define OPCODE_AT_BUF2_WRITE_ERASE_PROGRAM	0x0385
38 #define OPCODE_AT_BUF1_LOAD			0x0253
39 #define OPCODE_AT_BUF2_LOAD			0x0255
40 #define OPCODE_AT_BUF1_COMPARE			0x0260
41 #define OPCODE_AT_BUF2_COMPARE			0x0261
42 #define OPCODE_AT_BUF1_REPROGRAM		0x0258
43 #define OPCODE_AT_BUF2_REPROGRAM		0x0259
44 
45 /* Status register bits for ST flashes */
46 #define SR_ST_WIP		0x01		/* Write In Progress */
47 #define SR_ST_WEL		0x02		/* Write Enable Latch */
48 #define SR_ST_BP_MASK		0x1c		/* Block Protect */
49 #define SR_ST_BP_SHIFT		2
50 #define SR_ST_SRWD		0x80		/* Status Register Write Disable */
51 
52 /* Status register bits for Atmel flashes */
53 #define SR_AT_READY		0x80
54 #define SR_AT_MISMATCH		0x40
55 #define SR_AT_ID_MASK		0x38
56 #define SR_AT_ID_SHIFT		3
57 
58 struct bcma_drv_cc;
59 
60 enum bcm47xxsflash_type {
61 	BCM47XXSFLASH_TYPE_ATMEL,
62 	BCM47XXSFLASH_TYPE_ST,
63 };
64 
65 struct bcm47xxsflash {
66 	struct bcma_drv_cc *bcma_cc;
67 	int (*cc_read)(struct bcm47xxsflash *b47s, u16 offset);
68 	void (*cc_write)(struct bcm47xxsflash *b47s, u16 offset, u32 value);
69 
70 	enum bcm47xxsflash_type type;
71 
72 	void __iomem *window;
73 
74 	u32 blocksize;
75 	u16 numblocks;
76 	u32 size;
77 
78 	struct mtd_info mtd;
79 };
80 
81 #endif /* BCM47XXSFLASH */
82