1 // SPDX-License-Identifier: GPL-2.0
4 #include <linux/mtd/spi-nor.h>
5 #include <linux/spi/spi.h>
6 #include <linux/spi/spi-mem.h>
10 #define SPI_NOR_DEBUGFS_ROOT "spi-nor"
37 	case SNOR_PROTO_1_1_1:     return "1S-1S-1S";  in spi_nor_protocol_name()
38 	case SNOR_PROTO_1_1_2:     return "1S-1S-2S";  in spi_nor_protocol_name()
39 	case SNOR_PROTO_1_1_4:     return "1S-1S-4S";  in spi_nor_protocol_name()
40 	case SNOR_PROTO_1_1_8:     return "1S-1S-8S";  in spi_nor_protocol_name()
41 	case SNOR_PROTO_1_2_2:     return "1S-2S-2S";  in spi_nor_protocol_name()
42 	case SNOR_PROTO_1_4_4:     return "1S-4S-4S";  in spi_nor_protocol_name()
43 	case SNOR_PROTO_1_8_8:     return "1S-8S-8S";  in spi_nor_protocol_name()
44 	case SNOR_PROTO_2_2_2:     return "2S-2S-2S";  in spi_nor_protocol_name()
45 	case SNOR_PROTO_4_4_4:     return "4S-4S-4S";  in spi_nor_protocol_name()
46 	case SNOR_PROTO_8_8_8:     return "8S-8S-8S";  in spi_nor_protocol_name()
47 	case SNOR_PROTO_1_1_1_DTR: return "1D-1D-1D";  in spi_nor_protocol_name()
48 	case SNOR_PROTO_1_2_2_DTR: return "1D-2D-2D";  in spi_nor_protocol_name()
49 	case SNOR_PROTO_1_4_4_DTR: return "1D-4D-4D";  in spi_nor_protocol_name()
50 	case SNOR_PROTO_1_8_8_DTR: return "1D-8D-8D";  in spi_nor_protocol_name()
51 	case SNOR_PROTO_8_8_8_DTR: return "8D-8D-8D";  in spi_nor_protocol_name()
78 	struct spi_nor *nor = s->private;  in spi_nor_params_show()  local
79 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_params_show()
80 	struct spi_nor_erase_map *erase_map = &params->erase_map;  in spi_nor_params_show()
81 	struct spi_nor_erase_region *region = erase_map->regions;  in spi_nor_params_show()
82 	const struct flash_info *info = nor->info;  in spi_nor_params_show()
86 	seq_printf(s, "name\t\t%s\n", info->name);  in spi_nor_params_show()
87 	seq_printf(s, "id\t\t%*ph\n", SPI_NOR_MAX_ID_LEN, nor->id);  in spi_nor_params_show()
88 	string_get_size(params->size, 1, STRING_UNITS_2, buf, sizeof(buf));  in spi_nor_params_show()
90 	seq_printf(s, "write size\t%u\n", params->writesize);  in spi_nor_params_show()
91 	seq_printf(s, "page size\t%u\n", params->page_size);  in spi_nor_params_show()
92 	seq_printf(s, "address nbytes\t%u\n", nor->addr_nbytes);  in spi_nor_params_show()
95 	spi_nor_print_flags(s, nor->flags, snor_f_names, sizeof(snor_f_names));  in spi_nor_params_show()
99 	seq_printf(s, " read\t\t0x%02x\n", nor->read_opcode);  in spi_nor_params_show()
100 	seq_printf(s, "  dummy cycles\t%u\n", nor->read_dummy);  in spi_nor_params_show()
101 	seq_printf(s, " erase\t\t0x%02x\n", nor->erase_opcode);  in spi_nor_params_show()
102 	seq_printf(s, " program\t0x%02x\n", nor->program_opcode);  in spi_nor_params_show()
104 	switch (nor->cmd_ext_type) {  in spi_nor_params_show()
122 		   spi_nor_protocol_name(nor->read_proto));  in spi_nor_params_show()
124 		   spi_nor_protocol_name(nor->write_proto));  in spi_nor_params_show()
126 		   spi_nor_protocol_name(nor->reg_proto));  in spi_nor_params_show()
130 		struct spi_nor_erase_type *et = &erase_map->erase_type[i];  in spi_nor_params_show()
132 		if (et->size) {  in spi_nor_params_show()
133 			string_get_size(et->size, 1, STRING_UNITS_2, buf,  in spi_nor_params_show()
135 			seq_printf(s, " %02x (%s) [%d]\n", et->opcode, buf, i);  in spi_nor_params_show()
139 	if (!(nor->flags & SNOR_F_NO_OP_CHIP_ERASE)) {  in spi_nor_params_show()
140 		string_get_size(params->size, 1, STRING_UNITS_2, buf, sizeof(buf));  in spi_nor_params_show()
141 		seq_printf(s, " %02x (%s)\n", nor->params->die_erase_opcode, buf);  in spi_nor_params_show()
146 	seq_puts(s, " ------------------+------------+----------\n");  in spi_nor_params_show()
147 	for (i = 0; i < erase_map->n_regions; i++) {  in spi_nor_params_show()
149 		u64 end = start + region[i].size - 1;  in spi_nor_params_show()
152 		seq_printf(s, " %08llx-%08llx |     [%c%c%c%c] | %s\n",  in spi_nor_params_show()
168 	seq_printf(s, " %s%s\n", spi_nor_protocol_name(cmd->proto),  in spi_nor_print_read_cmd()
170 	seq_printf(s, "  opcode\t0x%02x\n", cmd->opcode);  in spi_nor_print_read_cmd()
171 	seq_printf(s, "  mode cycles\t%u\n", cmd->num_mode_clocks);  in spi_nor_print_read_cmd()
172 	seq_printf(s, "  dummy cycles\t%u\n", cmd->num_wait_states);  in spi_nor_print_read_cmd()
178 	seq_printf(s, " %s\n", spi_nor_protocol_name(cmd->proto));  in spi_nor_print_pp_cmd()
179 	seq_printf(s, "  opcode\t0x%02x\n", cmd->opcode);  in spi_nor_print_pp_cmd()
184 	struct spi_nor *nor = s->private;  in spi_nor_capabilities_show()  local
185 	struct spi_nor_flash_parameter *params = nor->params;  in spi_nor_capabilities_show()
186 	u32 hwcaps = params->hwcaps.mask;  in spi_nor_capabilities_show()
198 		spi_nor_print_read_cmd(s, BIT(i), &params->reads[cmd]);  in spi_nor_capabilities_show()
211 		spi_nor_print_pp_cmd(s, &params->page_programs[cmd]);  in spi_nor_capabilities_show()
224 	struct spi_nor *nor = data;  in spi_nor_debugfs_unregister()  local
226 	debugfs_remove(nor->debugfs_root);  in spi_nor_debugfs_unregister()
227 	nor->debugfs_root = NULL;  in spi_nor_debugfs_unregister()
232 void spi_nor_debugfs_register(struct spi_nor *nor)  in spi_nor_debugfs_register()  argument
240 	ret = devm_add_action(nor->dev, spi_nor_debugfs_unregister, nor);  in spi_nor_debugfs_register()
244 	d = debugfs_create_dir(dev_name(nor->dev), rootdir);  in spi_nor_debugfs_register()
245 	nor->debugfs_root = d;  in spi_nor_debugfs_register()
247 	debugfs_create_file("params", 0444, d, nor, &spi_nor_params_fops);  in spi_nor_debugfs_register()
248 	debugfs_create_file("capabilities", 0444, d, nor,  in spi_nor_debugfs_register()