1 // SPDX-License-Identifier: GPL-2.0
7 #include <linux/mtd/spi-nor.h>
11 /* SST flash_info mfr_flag. Used to specify SST byte programming. */
18 	return -EOPNOTSUPP;  in sst26vf_nor_lock()
26 	if (ofs != 0 || len != nor->params->size)  in sst26vf_nor_unlock()
27 		return -EINVAL;  in sst26vf_nor_unlock()
29 	ret = spi_nor_read_cr(nor, nor->bouncebuf);  in sst26vf_nor_unlock()
33 	if (!(nor->bouncebuf[0] & SST26VF_CR_BPNV)) {  in sst26vf_nor_unlock()
34 		dev_dbg(nor->dev, "Any block has been permanently locked\n");  in sst26vf_nor_unlock()
35 		return -EINVAL;  in sst26vf_nor_unlock()
43 	return -EOPNOTSUPP;  in sst26vf_nor_is_locked()
54 	nor->params->locking_ops = &sst26vf_nor_locking_ops;  in sst26vf_nor_late_init()
64 	/* SST -- large erase sizes are "overlays", "sectors" are 4K */
65 	{ "sst25vf040b", INFO(0xbf258d, 0, 64 * 1024,  8)
69 	{ "sst25vf080b", INFO(0xbf258e, 0, 64 * 1024, 16)
73 	{ "sst25vf016b", INFO(0xbf2541, 0, 64 * 1024, 32)
77 	{ "sst25vf032b", INFO(0xbf254a, 0, 64 * 1024, 64)
81 	{ "sst25vf064c", INFO(0xbf254b, 0, 64 * 1024, 128)
85 	{ "sst25wf512",  INFO(0xbf2501, 0, 64 * 1024,  1)
89 	{ "sst25wf010",  INFO(0xbf2502, 0, 64 * 1024,  2)
93 	{ "sst25wf020",  INFO(0xbf2503, 0, 64 * 1024,  4)
97 	{ "sst25wf020a", INFO(0x621612, 0, 64 * 1024,  4)
100 	{ "sst25wf040b", INFO(0x621613, 0, 64 * 1024,  8)
103 	{ "sst25wf040",  INFO(0xbf2504, 0, 64 * 1024,  8)
107 	{ "sst25wf080",  INFO(0xbf2505, 0, 64 * 1024, 16)
111 	{ "sst26wf016b", INFO(0xbf2651, 0, 64 * 1024, 32)
114 	{ "sst26vf016b", INFO(0xbf2641, 0, 64 * 1024, 32)
120 	{ "sst26vf064b", INFO(0xbf2643, 0, 64 * 1024, 128)
133 	dev_dbg(nor->dev, "to 0x%08x, len %zd\n", (u32)to, len);  in sst_nor_write()
143 	nor->sst_write_second = false;  in sst_nor_write()
147 		nor->program_opcode = SPINOR_OP_BP;  in sst_nor_write()
149 		/* write one byte. */  in sst_nor_write()
153 		WARN(ret != 1, "While writing 1 byte written %i bytes\n", ret);  in sst_nor_write()
163 	for (; actual < len - 1; actual += 2) {  in sst_nor_write()
164 		nor->program_opcode = SPINOR_OP_AAI_WP;  in sst_nor_write()
175 		nor->sst_write_second = true;  in sst_nor_write()
177 	nor->sst_write_second = false;  in sst_nor_write()
187 	/* Write out trailing byte if it exists. */  in sst_nor_write()
193 		nor->program_opcode = SPINOR_OP_BP;  in sst_nor_write()
197 		WARN(ret != 1, "While writing 1 byte written %i bytes\n", ret);  in sst_nor_write()
214 	if (nor->info->mfr_flags & SST_WRITE)  in sst_nor_late_init()
215 		nor->mtd._write = sst_nor_write;  in sst_nor_late_init()