7 #include <linux/mtd/spi-nor.h>
28 /* Cypress SPI NOR flash operations. */
47 static int cypress_nor_octal_dtr_en(struct spi_nor *nor)  in cypress_nor_octal_dtr_en()  argument
50 	u8 *buf = nor->bouncebuf;  in cypress_nor_octal_dtr_en()
58 	ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto);  in cypress_nor_octal_dtr_en()
62 	nor->read_dummy = 24;  in cypress_nor_octal_dtr_en()
69 	ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto);  in cypress_nor_octal_dtr_en()
74 	ret = spi_nor_read_id(nor, 4, 3, buf, SNOR_PROTO_8_8_8_DTR);  in cypress_nor_octal_dtr_en()
76 		dev_dbg(nor->dev, "error %d reading JEDEC ID after enabling 8D-8D-8D mode\n", ret);  in cypress_nor_octal_dtr_en()
80 	if (memcmp(buf, nor->info->id, nor->info->id_len))  in cypress_nor_octal_dtr_en()
86 static int cypress_nor_octal_dtr_dis(struct spi_nor *nor)  in cypress_nor_octal_dtr_dis()  argument
89 	u8 *buf = nor->bouncebuf;  in cypress_nor_octal_dtr_dis()
101 	ret = spi_nor_write_any_volatile_reg(nor, &op, SNOR_PROTO_8_8_8_DTR);  in cypress_nor_octal_dtr_dis()
106 	ret = spi_nor_read_id(nor, 0, 0, buf, SNOR_PROTO_1_1_1);  in cypress_nor_octal_dtr_dis()
108 		dev_dbg(nor->dev, "error %d reading JEDEC ID after disabling 8D-8D-8D mode\n", ret);  in cypress_nor_octal_dtr_dis()
112 	if (memcmp(buf, nor->info->id, nor->info->id_len))  in cypress_nor_octal_dtr_dis()
121  * @nor:	pointer to a 'struct spi_nor'
132 static int cypress_nor_quad_enable_volatile(struct spi_nor *nor)  in cypress_nor_quad_enable_volatile()  argument
135 	u8 addr_mode_nbytes = nor->params->addr_mode_nbytes;  in cypress_nor_quad_enable_volatile()
142 					  nor->bouncebuf);  in cypress_nor_quad_enable_volatile()
144 	ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);  in cypress_nor_quad_enable_volatile()
148 	if (nor->bouncebuf[0] & SPINOR_REG_CYPRESS_CFR1V_QUAD_EN)  in cypress_nor_quad_enable_volatile()
152 	nor->bouncebuf[0] |= SPINOR_REG_CYPRESS_CFR1V_QUAD_EN;  in cypress_nor_quad_enable_volatile()
156 					  nor->bouncebuf);  in cypress_nor_quad_enable_volatile()
157 	ret = spi_nor_write_any_volatile_reg(nor, &op, nor->reg_proto);  in cypress_nor_quad_enable_volatile()
161 	cfr1v_written = nor->bouncebuf[0];  in cypress_nor_quad_enable_volatile()
167 					  nor->bouncebuf);  in cypress_nor_quad_enable_volatile()
168 	ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);  in cypress_nor_quad_enable_volatile()
172 	if (nor->bouncebuf[0] != cfr1v_written) {  in cypress_nor_quad_enable_volatile()
173 		dev_err(nor->dev, "CFR1: Read back test failed\n");  in cypress_nor_quad_enable_volatile()
183  * @nor:	pointer to a 'struct spi_nor'
191 static int cypress_nor_set_page_size(struct spi_nor *nor)  in cypress_nor_set_page_size()  argument
195 					  nor->bouncebuf);  in cypress_nor_set_page_size()
198 	ret = spi_nor_read_any_reg(nor, &op, nor->reg_proto);  in cypress_nor_set_page_size()
202 	if (nor->bouncebuf[0] & SPINOR_REG_CYPRESS_CFR3V_PGSZ)  in cypress_nor_set_page_size()
203 		nor->params->page_size = 512;  in cypress_nor_set_page_size()
205 		nor->params->page_size = 256;  in cypress_nor_set_page_size()
211 s25hx_t_post_bfpt_fixup(struct spi_nor *nor,  in s25hx_t_post_bfpt_fixup()  argument
216 	nor->params->quad_enable = cypress_nor_quad_enable_volatile;  in s25hx_t_post_bfpt_fixup()
218 	return cypress_nor_set_page_size(nor);  in s25hx_t_post_bfpt_fixup()
221 static void s25hx_t_post_sfdp_fixup(struct spi_nor *nor)  in s25hx_t_post_sfdp_fixup()  argument
224 					nor->params->erase_map.erase_type;  in s25hx_t_post_sfdp_fixup()
245 static void s25hx_t_late_init(struct spi_nor *nor)  in s25hx_t_late_init()  argument
247 	struct spi_nor_flash_parameter *params = nor->params;  in s25hx_t_late_init()
264  * @nor:		pointer to a 'struct spi_nor'
272 static int cypress_nor_octal_dtr_enable(struct spi_nor *nor, bool enable)  in cypress_nor_octal_dtr_enable()  argument
274 	return enable ? cypress_nor_octal_dtr_en(nor) :  in cypress_nor_octal_dtr_enable()
275 			cypress_nor_octal_dtr_dis(nor);  in cypress_nor_octal_dtr_enable()
278 static void s28hs512t_default_init(struct spi_nor *nor)  in s28hs512t_default_init()  argument
280 	nor->params->octal_dtr_enable = cypress_nor_octal_dtr_enable;  in s28hs512t_default_init()
281 	nor->params->writesize = 16;  in s28hs512t_default_init()
284 static void s28hs512t_post_sfdp_fixup(struct spi_nor *nor)  in s28hs512t_post_sfdp_fixup()  argument
290 	if (nor->params->reads[SNOR_CMD_READ_8_8_8_DTR].opcode == 0)  in s28hs512t_post_sfdp_fixup()
291 		nor->params->reads[SNOR_CMD_READ_8_8_8_DTR].opcode =  in s28hs512t_post_sfdp_fixup()
295 	spi_nor_set_pp_settings(&nor->params->page_programs[SNOR_CMD_PP],  in s28hs512t_post_sfdp_fixup()
301 	spi_nor_set_pp_settings(&nor->params->page_programs[SNOR_CMD_PP_8_8_8_DTR],  in s28hs512t_post_sfdp_fixup()
309 	nor->params->rdsr_addr_nbytes = 4;  in s28hs512t_post_sfdp_fixup()
312 static int s28hs512t_post_bfpt_fixup(struct spi_nor *nor,  in s28hs512t_post_bfpt_fixup()  argument
316 	return cypress_nor_set_page_size(nor);  in s28hs512t_post_bfpt_fixup()
326 s25fs_s_nor_post_bfpt_fixups(struct spi_nor *nor,  in s25fs_s_nor_post_bfpt_fixups()  argument
336 	nor->params->page_size = 256;  in s25fs_s_nor_post_bfpt_fixups()
465  * @nor:	pointer to 'struct spi_nor'.
467 static void spansion_nor_clear_sr(struct spi_nor *nor)  in spansion_nor_clear_sr()  argument
471 	if (nor->spimem) {  in spansion_nor_clear_sr()
474 		spi_nor_spimem_setup_op(nor, &op, nor->reg_proto);  in spansion_nor_clear_sr()
476 		ret = spi_mem_exec_op(nor->spimem, &op);  in spansion_nor_clear_sr()
478 		ret = spi_nor_controller_ops_write_reg(nor, SPINOR_OP_CLSR,  in spansion_nor_clear_sr()
483 		dev_dbg(nor->dev, "error %d clearing SR\n", ret);  in spansion_nor_clear_sr()
489  * @nor:	pointer to 'struct spi_nor'.
493 static int spansion_nor_sr_ready_and_clear(struct spi_nor *nor)  in spansion_nor_sr_ready_and_clear()  argument
497 	ret = spi_nor_read_sr(nor, nor->bouncebuf);  in spansion_nor_sr_ready_and_clear()
501 	if (nor->bouncebuf[0] & (SR_E_ERR | SR_P_ERR)) {  in spansion_nor_sr_ready_and_clear()
502 		if (nor->bouncebuf[0] & SR_E_ERR)  in spansion_nor_sr_ready_and_clear()
503 			dev_err(nor->dev, "Erase Error occurred\n");  in spansion_nor_sr_ready_and_clear()
505 			dev_err(nor->dev, "Programming Error occurred\n");  in spansion_nor_sr_ready_and_clear()
507 		spansion_nor_clear_sr(nor);  in spansion_nor_sr_ready_and_clear()
515 		ret = spi_nor_write_disable(nor);  in spansion_nor_sr_ready_and_clear()
522 	return !(nor->bouncebuf[0] & SR_WIP);  in spansion_nor_sr_ready_and_clear()
525 static void spansion_nor_late_init(struct spi_nor *nor)  in spansion_nor_late_init()  argument
527 	if (nor->params->size > SZ_16M) {  in spansion_nor_late_init()
528 		nor->flags |= SNOR_F_4B_OPCODES;  in spansion_nor_late_init()
530 		nor->erase_opcode = SPINOR_OP_SE;  in spansion_nor_late_init()
531 		nor->mtd.erasesize = nor->info->sector_size;  in spansion_nor_late_init()
534 	if (nor->info->mfr_flags & USE_CLSR)  in spansion_nor_late_init()
535 		nor->params->ready = spansion_nor_sr_ready_and_clear;  in spansion_nor_late_init()