1 // SPDX-License-Identifier: GPL-2.0
3 #include <linux/mtd/spi-nor.h>
4 #include <linux/spi/spi.h>
5 #include <linux/spi/spi-mem.h>
10 #define SPI_NOR_DEBUGFS_ROOT "spi-nor"
34 	case SNOR_PROTO_1_1_1:     return "1S-1S-1S";  in spi_nor_protocol_name()
35 	case SNOR_PROTO_1_1_2:     return "1S-1S-2S";  in spi_nor_protocol_name()
36 	case SNOR_PROTO_1_1_4:     return "1S-1S-4S";  in spi_nor_protocol_name()
37 	case SNOR_PROTO_1_1_8:     return "1S-1S-8S";  in spi_nor_protocol_name()
38 	case SNOR_PROTO_1_2_2:     return "1S-2S-2S";  in spi_nor_protocol_name()
39 	case SNOR_PROTO_1_4_4:     return "1S-4S-4S";  in spi_nor_protocol_name()
40 	case SNOR_PROTO_1_8_8:     return "1S-8S-8S";  in spi_nor_protocol_name()
41 	case SNOR_PROTO_2_2_2:     return "2S-2S-2S";  in spi_nor_protocol_name()
42 	case SNOR_PROTO_4_4_4:     return "4S-4S-4S";  in spi_nor_protocol_name()
43 	case SNOR_PROTO_8_8_8:     return "8S-8S-8S";  in spi_nor_protocol_name()
44 	case SNOR_PROTO_1_1_1_DTR: return "1D-1D-1D";  in spi_nor_protocol_name()
45 	case SNOR_PROTO_1_2_2_DTR: return "1D-2D-2D";  in spi_nor_protocol_name()
46 	case SNOR_PROTO_1_4_4_DTR: return "1D-4D-4D";  in spi_nor_protocol_name()
47 	case SNOR_PROTO_1_8_8_DTR: return "1D-8D-8D";  in spi_nor_protocol_name()
48 	case SNOR_PROTO_8_8_8_DTR: return "8D-8D-8D";  in spi_nor_protocol_name()
75 	struct spi_nor *nor = s->private;  in spi_nor_params_show()  local
76 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_params_show()
77 	struct spi_nor_erase_map *erase_map = &params->erase_map;  in spi_nor_params_show()
79 	const struct flash_info *info = nor->info;  in spi_nor_params_show()
83 	seq_printf(s, "name\t\t%s\n", info->name);  in spi_nor_params_show()
84 	seq_printf(s, "id\t\t%*ph\n", info->id_len, info->id);  in spi_nor_params_show()
85 	string_get_size(params->size, 1, STRING_UNITS_2, buf, sizeof(buf));  in spi_nor_params_show()
87 	seq_printf(s, "write size\t%u\n", params->writesize);  in spi_nor_params_show()
88 	seq_printf(s, "page size\t%u\n", params->page_size);  in spi_nor_params_show()
89 	seq_printf(s, "address nbytes\t%u\n", nor->addr_nbytes);  in spi_nor_params_show()
92 	spi_nor_print_flags(s, nor->flags, snor_f_names, sizeof(snor_f_names));  in spi_nor_params_show()
96 	seq_printf(s, " read\t\t0x%02x\n", nor->read_opcode);  in spi_nor_params_show()
97 	seq_printf(s, "  dummy cycles\t%u\n", nor->read_dummy);  in spi_nor_params_show()
98 	seq_printf(s, " erase\t\t0x%02x\n", nor->erase_opcode);  in spi_nor_params_show()
99 	seq_printf(s, " program\t0x%02x\n", nor->program_opcode);  in spi_nor_params_show()
101 	switch (nor->cmd_ext_type) {  in spi_nor_params_show()
119 		   spi_nor_protocol_name(nor->read_proto));  in spi_nor_params_show()
121 		   spi_nor_protocol_name(nor->write_proto));  in spi_nor_params_show()
123 		   spi_nor_protocol_name(nor->reg_proto));  in spi_nor_params_show()
127 		struct spi_nor_erase_type *et = &erase_map->erase_type[i];  in spi_nor_params_show()
129 		if (et->size) {  in spi_nor_params_show()
130 			string_get_size(et->size, 1, STRING_UNITS_2, buf,  in spi_nor_params_show()
132 			seq_printf(s, " %02x (%s) [%d]\n", et->opcode, buf, i);  in spi_nor_params_show()
136 	if (!(nor->flags & SNOR_F_NO_OP_CHIP_ERASE)) {  in spi_nor_params_show()
137 		string_get_size(params->size, 1, STRING_UNITS_2, buf, sizeof(buf));  in spi_nor_params_show()
143 	seq_puts(s, " ------------------+------------+----------\n");  in spi_nor_params_show()
144 	for (region = erase_map->regions;  in spi_nor_params_show()
147 		u64 start = region->offset & ~SNOR_ERASE_FLAGS_MASK;  in spi_nor_params_show()
148 		u64 flags = region->offset & SNOR_ERASE_FLAGS_MASK;  in spi_nor_params_show()
149 		u64 end = start + region->size - 1;  in spi_nor_params_show()
151 		seq_printf(s, " %08llx-%08llx |     [%c%c%c%c] | %s\n",  in spi_nor_params_show()
167 	seq_printf(s, " %s%s\n", spi_nor_protocol_name(cmd->proto),  in spi_nor_print_read_cmd()
169 	seq_printf(s, "  opcode\t0x%02x\n", cmd->opcode);  in spi_nor_print_read_cmd()
170 	seq_printf(s, "  mode cycles\t%u\n", cmd->num_mode_clocks);  in spi_nor_print_read_cmd()
171 	seq_printf(s, "  dummy cycles\t%u\n", cmd->num_wait_states);  in spi_nor_print_read_cmd()
177 	seq_printf(s, " %s\n", spi_nor_protocol_name(cmd->proto));  in spi_nor_print_pp_cmd()
178 	seq_printf(s, "  opcode\t0x%02x\n", cmd->opcode);  in spi_nor_print_pp_cmd()
183 	struct spi_nor *nor = s->private;  in spi_nor_capabilities_show()  local
184 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_capabilities_show()
185 	u32 hwcaps = params->hwcaps.mask;  in spi_nor_capabilities_show()
197 		spi_nor_print_read_cmd(s, BIT(i), &params->reads[cmd]);  in spi_nor_capabilities_show()
210 		spi_nor_print_pp_cmd(s, &params->page_programs[cmd]);  in spi_nor_capabilities_show()
223 	struct spi_nor *nor = data;  in spi_nor_debugfs_unregister()  local
225 	debugfs_remove(nor->debugfs_root);  in spi_nor_debugfs_unregister()
226 	nor->debugfs_root = NULL;  in spi_nor_debugfs_unregister()
229 void spi_nor_debugfs_register(struct spi_nor *nor)  in spi_nor_debugfs_register()  argument
239 	ret = devm_add_action(nor->dev, spi_nor_debugfs_unregister, nor);  in spi_nor_debugfs_register()
243 	d = debugfs_create_dir(dev_name(nor->dev), rootdir);  in spi_nor_debugfs_register()
244 	nor->debugfs_root = d;  in spi_nor_debugfs_register()
246 	debugfs_create_file("params", 0444, d, nor, &spi_nor_params_fops);  in spi_nor_debugfs_register()
247 	debugfs_create_file("capabilities", 0444, d, nor,  in spi_nor_debugfs_register()