Lines Matching +full:pd +full:- +full:disable
1 // SPDX-License-Identifier: GPL-2.0-only
20 #include <linux/nvmem-provider.h>
70 return edev->pdata->quirks & EEPROM_93XX46_QUIRK_SINGLE_WORD_READ; in has_quirk_single_word_read()
75 return edev->pdata->quirks & EEPROM_93XX46_QUIRK_INSTRUCTION_LENGTH; in has_quirk_instruction_length()
80 return edev->pdata->quirks & EEPROM_93XX46_QUIRK_EXTRA_READ_CYCLE; in has_quirk_extra_read_cycle()
91 if (unlikely(off >= edev->size)) in eeprom_93xx46_read()
93 if ((off + count) > edev->size) in eeprom_93xx46_read()
94 count = edev->size - off; in eeprom_93xx46_read()
98 mutex_lock(&edev->lock); in eeprom_93xx46_read()
100 if (edev->pdata->prepare) in eeprom_93xx46_read()
101 edev->pdata->prepare(edev); in eeprom_93xx46_read()
104 bits = edev->addrlen + 3; in eeprom_93xx46_read()
109 u16 cmd_addr = OP_READ << edev->addrlen; in eeprom_93xx46_read()
112 if (edev->pdata->flags & EE_ADDR8) { in eeprom_93xx46_read()
122 dev_dbg(&edev->spi->dev, "read cmd 0x%x, %d Hz\n", in eeprom_93xx46_read()
123 cmd_addr, edev->spi->max_speed_hz); in eeprom_93xx46_read()
142 err = spi_sync(edev->spi, &m); in eeprom_93xx46_read()
147 dev_err(&edev->spi->dev, "read %zu bytes at %d: err. %d\n", in eeprom_93xx46_read()
154 count -= nbytes; in eeprom_93xx46_read()
157 if (edev->pdata->finish) in eeprom_93xx46_read()
158 edev->pdata->finish(edev); in eeprom_93xx46_read()
160 mutex_unlock(&edev->lock); in eeprom_93xx46_read()
173 bits = edev->addrlen + 3; in eeprom_93xx46_ew()
175 cmd_addr = OP_START << edev->addrlen; in eeprom_93xx46_ew()
176 if (edev->pdata->flags & EE_ADDR8) in eeprom_93xx46_ew()
186 dev_dbg(&edev->spi->dev, "ew%s cmd 0x%04x, %d bits\n", in eeprom_93xx46_ew()
197 mutex_lock(&edev->lock); in eeprom_93xx46_ew()
199 if (edev->pdata->prepare) in eeprom_93xx46_ew()
200 edev->pdata->prepare(edev); in eeprom_93xx46_ew()
202 ret = spi_sync(edev->spi, &m); in eeprom_93xx46_ew()
206 dev_err(&edev->spi->dev, "erase/write %sable error %d\n", in eeprom_93xx46_ew()
209 if (edev->pdata->finish) in eeprom_93xx46_ew()
210 edev->pdata->finish(edev); in eeprom_93xx46_ew()
212 mutex_unlock(&edev->lock); in eeprom_93xx46_ew()
225 if (unlikely(off >= edev->size)) in eeprom_93xx46_write_word()
226 return -EINVAL; in eeprom_93xx46_write_word()
229 bits = edev->addrlen + 3; in eeprom_93xx46_write_word()
231 cmd_addr = OP_WRITE << edev->addrlen; in eeprom_93xx46_write_word()
233 if (edev->pdata->flags & EE_ADDR8) { in eeprom_93xx46_write_word()
241 dev_dbg(&edev->spi->dev, "write cmd 0x%x\n", cmd_addr); in eeprom_93xx46_write_word()
256 ret = spi_sync(edev->spi, &m); in eeprom_93xx46_write_word()
269 if (unlikely(off >= edev->size)) in eeprom_93xx46_write()
270 return -EFBIG; in eeprom_93xx46_write()
271 if ((off + count) > edev->size) in eeprom_93xx46_write()
272 count = edev->size - off; in eeprom_93xx46_write()
276 /* only write even number of bytes on 16-bit devices */ in eeprom_93xx46_write()
277 if (edev->pdata->flags & EE_ADDR16) { in eeprom_93xx46_write()
287 mutex_lock(&edev->lock); in eeprom_93xx46_write()
289 if (edev->pdata->prepare) in eeprom_93xx46_write()
290 edev->pdata->prepare(edev); in eeprom_93xx46_write()
295 dev_err(&edev->spi->dev, "write failed at %d: %d\n", in eeprom_93xx46_write()
301 if (edev->pdata->finish) in eeprom_93xx46_write()
302 edev->pdata->finish(edev); in eeprom_93xx46_write()
304 mutex_unlock(&edev->lock); in eeprom_93xx46_write()
306 /* erase/write disable */ in eeprom_93xx46_write()
313 struct eeprom_93xx46_platform_data *pd = edev->pdata; in eeprom_93xx46_eral() local
320 bits = edev->addrlen + 3; in eeprom_93xx46_eral()
322 cmd_addr = OP_START << edev->addrlen; in eeprom_93xx46_eral()
323 if (edev->pdata->flags & EE_ADDR8) in eeprom_93xx46_eral()
333 dev_dbg(&edev->spi->dev, "eral cmd 0x%04x, %d bits\n", cmd_addr, bits); in eeprom_93xx46_eral()
343 mutex_lock(&edev->lock); in eeprom_93xx46_eral()
345 if (edev->pdata->prepare) in eeprom_93xx46_eral()
346 edev->pdata->prepare(edev); in eeprom_93xx46_eral()
348 ret = spi_sync(edev->spi, &m); in eeprom_93xx46_eral()
350 dev_err(&edev->spi->dev, "erase error %d\n", ret); in eeprom_93xx46_eral()
354 if (pd->finish) in eeprom_93xx46_eral()
355 pd->finish(edev); in eeprom_93xx46_eral()
357 mutex_unlock(&edev->lock); in eeprom_93xx46_eral()
388 gpiod_set_value_cansleep(edev->pdata->select, 1); in select_assert()
395 gpiod_set_value_cansleep(edev->pdata->select, 0); in select_deassert()
399 { .compatible = "eeprom-93xx46", .data = &at93c46_data, },
410 { .name = "eeprom-93xx46",
429 of_match_device(eeprom_93xx46_of_table, &spi->dev); in eeprom_93xx46_probe_dt()
430 struct device_node *np = spi->dev.of_node; in eeprom_93xx46_probe_dt()
431 struct eeprom_93xx46_platform_data *pd; in eeprom_93xx46_probe_dt() local
435 pd = devm_kzalloc(&spi->dev, sizeof(*pd), GFP_KERNEL); in eeprom_93xx46_probe_dt()
436 if (!pd) in eeprom_93xx46_probe_dt()
437 return -ENOMEM; in eeprom_93xx46_probe_dt()
439 ret = of_property_read_u32(np, "data-size", &tmp); in eeprom_93xx46_probe_dt()
441 dev_err(&spi->dev, "data-size property not found\n"); in eeprom_93xx46_probe_dt()
446 pd->flags |= EE_ADDR8; in eeprom_93xx46_probe_dt()
448 pd->flags |= EE_ADDR16; in eeprom_93xx46_probe_dt()
450 dev_err(&spi->dev, "invalid data-size (%d)\n", tmp); in eeprom_93xx46_probe_dt()
451 return -EINVAL; in eeprom_93xx46_probe_dt()
454 if (of_property_read_bool(np, "read-only")) in eeprom_93xx46_probe_dt()
455 pd->flags |= EE_READONLY; in eeprom_93xx46_probe_dt()
457 pd->select = devm_gpiod_get_optional(&spi->dev, "select", in eeprom_93xx46_probe_dt()
459 if (IS_ERR(pd->select)) in eeprom_93xx46_probe_dt()
460 return PTR_ERR(pd->select); in eeprom_93xx46_probe_dt()
462 pd->prepare = select_assert; in eeprom_93xx46_probe_dt()
463 pd->finish = select_deassert; in eeprom_93xx46_probe_dt()
464 gpiod_direction_output(pd->select, 0); in eeprom_93xx46_probe_dt()
466 if (of_id->data) { in eeprom_93xx46_probe_dt()
467 const struct eeprom_93xx46_devtype_data *data = of_id->data; in eeprom_93xx46_probe_dt()
469 pd->quirks = data->quirks; in eeprom_93xx46_probe_dt()
470 pd->flags |= data->flags; in eeprom_93xx46_probe_dt()
473 spi->dev.platform_data = pd; in eeprom_93xx46_probe_dt()
480 struct eeprom_93xx46_platform_data *pd; in eeprom_93xx46_probe() local
484 if (spi->dev.of_node) { in eeprom_93xx46_probe()
490 pd = spi->dev.platform_data; in eeprom_93xx46_probe()
491 if (!pd) { in eeprom_93xx46_probe()
492 dev_err(&spi->dev, "missing platform data\n"); in eeprom_93xx46_probe()
493 return -ENODEV; in eeprom_93xx46_probe()
496 edev = devm_kzalloc(&spi->dev, sizeof(*edev), GFP_KERNEL); in eeprom_93xx46_probe()
498 return -ENOMEM; in eeprom_93xx46_probe()
500 if (pd->flags & EE_SIZE1K) in eeprom_93xx46_probe()
501 edev->size = 128; in eeprom_93xx46_probe()
502 else if (pd->flags & EE_SIZE2K) in eeprom_93xx46_probe()
503 edev->size = 256; in eeprom_93xx46_probe()
504 else if (pd->flags & EE_SIZE4K) in eeprom_93xx46_probe()
505 edev->size = 512; in eeprom_93xx46_probe()
507 dev_err(&spi->dev, "unspecified size\n"); in eeprom_93xx46_probe()
508 return -EINVAL; in eeprom_93xx46_probe()
511 if (pd->flags & EE_ADDR8) in eeprom_93xx46_probe()
512 edev->addrlen = ilog2(edev->size); in eeprom_93xx46_probe()
513 else if (pd->flags & EE_ADDR16) in eeprom_93xx46_probe()
514 edev->addrlen = ilog2(edev->size) - 1; in eeprom_93xx46_probe()
516 dev_err(&spi->dev, "unspecified address type\n"); in eeprom_93xx46_probe()
517 return -EINVAL; in eeprom_93xx46_probe()
520 mutex_init(&edev->lock); in eeprom_93xx46_probe()
522 edev->spi = spi; in eeprom_93xx46_probe()
523 edev->pdata = pd; in eeprom_93xx46_probe()
525 edev->nvmem_config.type = NVMEM_TYPE_EEPROM; in eeprom_93xx46_probe()
526 edev->nvmem_config.name = dev_name(&spi->dev); in eeprom_93xx46_probe()
527 edev->nvmem_config.dev = &spi->dev; in eeprom_93xx46_probe()
528 edev->nvmem_config.read_only = pd->flags & EE_READONLY; in eeprom_93xx46_probe()
529 edev->nvmem_config.root_only = true; in eeprom_93xx46_probe()
530 edev->nvmem_config.owner = THIS_MODULE; in eeprom_93xx46_probe()
531 edev->nvmem_config.compat = true; in eeprom_93xx46_probe()
532 edev->nvmem_config.base_dev = &spi->dev; in eeprom_93xx46_probe()
533 edev->nvmem_config.reg_read = eeprom_93xx46_read; in eeprom_93xx46_probe()
534 edev->nvmem_config.reg_write = eeprom_93xx46_write; in eeprom_93xx46_probe()
535 edev->nvmem_config.priv = edev; in eeprom_93xx46_probe()
536 edev->nvmem_config.stride = 4; in eeprom_93xx46_probe()
537 edev->nvmem_config.word_size = 1; in eeprom_93xx46_probe()
538 edev->nvmem_config.size = edev->size; in eeprom_93xx46_probe()
540 edev->nvmem = devm_nvmem_register(&spi->dev, &edev->nvmem_config); in eeprom_93xx46_probe()
541 if (IS_ERR(edev->nvmem)) in eeprom_93xx46_probe()
542 return PTR_ERR(edev->nvmem); in eeprom_93xx46_probe()
544 dev_info(&spi->dev, "%d-bit eeprom containing %d bytes %s\n", in eeprom_93xx46_probe()
545 (pd->flags & EE_ADDR8) ? 8 : 16, in eeprom_93xx46_probe()
546 edev->size, in eeprom_93xx46_probe()
547 (pd->flags & EE_READONLY) ? "(readonly)" : ""); in eeprom_93xx46_probe()
549 if (!(pd->flags & EE_READONLY)) { in eeprom_93xx46_probe()
550 if (device_create_file(&spi->dev, &dev_attr_erase)) in eeprom_93xx46_probe()
551 dev_err(&spi->dev, "can't create erase interface\n"); in eeprom_93xx46_probe()
562 if (!(edev->pdata->flags & EE_READONLY)) in eeprom_93xx46_remove()
563 device_remove_file(&spi->dev, &dev_attr_erase); in eeprom_93xx46_remove()
582 MODULE_ALIAS("spi:eeprom-93xx46");