Lines Matching full:nfc
259 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_select_chip() local
265 nfc->param.chip_select = meson_chip->sels[chip] ? NAND_CE1 : NAND_CE0; in meson_nfc_select_chip()
266 nfc->param.rb_select = nfc->param.chip_select; in meson_nfc_select_chip()
267 nfc->timing.twb = meson_chip->twb; in meson_nfc_select_chip()
268 nfc->timing.tadl = meson_chip->tadl; in meson_nfc_select_chip()
269 nfc->timing.tbers_max = meson_chip->tbers_max; in meson_nfc_select_chip()
271 if (nfc->clk_rate != meson_chip->clk_rate) { in meson_nfc_select_chip()
272 ret = clk_set_rate(nfc->nand_clk, meson_chip->clk_rate); in meson_nfc_select_chip()
274 dev_err(nfc->dev, "failed to set clock rate\n"); in meson_nfc_select_chip()
277 nfc->clk_rate = meson_chip->clk_rate; in meson_nfc_select_chip()
279 if (nfc->bus_timing != meson_chip->bus_timing) { in meson_nfc_select_chip()
281 writel(value, nfc->reg_base + NFC_REG_CFG); in meson_nfc_select_chip()
282 writel((1 << 31), nfc->reg_base + NFC_REG_CMD); in meson_nfc_select_chip()
283 nfc->bus_timing = meson_chip->bus_timing; in meson_nfc_select_chip()
287 static void meson_nfc_cmd_idle(struct meson_nfc *nfc, u32 time) in meson_nfc_cmd_idle() argument
289 writel(nfc->param.chip_select | NFC_CMD_IDLE | (time & 0x3ff), in meson_nfc_cmd_idle()
290 nfc->reg_base + NFC_REG_CMD); in meson_nfc_cmd_idle()
293 static void meson_nfc_cmd_seed(struct meson_nfc *nfc, u32 seed) in meson_nfc_cmd_seed() argument
296 nfc->reg_base + NFC_REG_CMD); in meson_nfc_cmd_seed()
303 struct meson_nfc *nfc = nand_get_controller_data(mtd_to_nand(mtd)); in meson_nfc_cmd_access() local
313 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_cmd_access()
322 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_cmd_access()
325 static void meson_nfc_drain_cmd(struct meson_nfc *nfc) in meson_nfc_drain_cmd() argument
334 * one is fetched into NFC request queue (ready to run), and another in meson_nfc_drain_cmd()
338 meson_nfc_cmd_idle(nfc, 0); in meson_nfc_drain_cmd()
339 meson_nfc_cmd_idle(nfc, 0); in meson_nfc_drain_cmd()
342 static int meson_nfc_wait_cmd_finish(struct meson_nfc *nfc, in meson_nfc_wait_cmd_finish() argument
349 ret = readl_relaxed_poll_timeout(nfc->reg_base + NFC_REG_CMD, cmd_size, in meson_nfc_wait_cmd_finish()
353 dev_err(nfc->dev, "wait for empty CMD FIFO time out\n"); in meson_nfc_wait_cmd_finish()
358 static int meson_nfc_wait_dma_finish(struct meson_nfc *nfc) in meson_nfc_wait_dma_finish() argument
360 meson_nfc_drain_cmd(nfc); in meson_nfc_wait_dma_finish()
362 return meson_nfc_wait_cmd_finish(nfc, DMA_BUSY_TIMEOUT); in meson_nfc_wait_dma_finish()
427 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_wait_no_rb_pin() local
430 meson_nfc_cmd_idle(nfc, nfc->timing.twb); in meson_nfc_wait_no_rb_pin()
431 meson_nfc_drain_cmd(nfc); in meson_nfc_wait_no_rb_pin()
432 meson_nfc_wait_cmd_finish(nfc, CMD_FIFO_EMPTY_TIMEOUT); in meson_nfc_wait_no_rb_pin()
434 cfg = readl(nfc->reg_base + NFC_REG_CFG); in meson_nfc_wait_no_rb_pin()
436 writel(cfg, nfc->reg_base + NFC_REG_CFG); in meson_nfc_wait_no_rb_pin()
438 reinit_completion(&nfc->completion); in meson_nfc_wait_no_rb_pin()
442 cmd = NFC_CMD_RB | NFC_CMD_RB_INT_NO_PIN | nfc->timing.tbers_max; in meson_nfc_wait_no_rb_pin()
443 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_wait_no_rb_pin()
445 if (!wait_for_completion_timeout(&nfc->completion, in meson_nfc_wait_no_rb_pin()
455 static int meson_nfc_wait_rb_pin(struct meson_nfc *nfc, int timeout_ms) in meson_nfc_wait_rb_pin() argument
460 meson_nfc_cmd_idle(nfc, nfc->timing.twb); in meson_nfc_wait_rb_pin()
461 meson_nfc_drain_cmd(nfc); in meson_nfc_wait_rb_pin()
462 meson_nfc_wait_cmd_finish(nfc, CMD_FIFO_EMPTY_TIMEOUT); in meson_nfc_wait_rb_pin()
464 cfg = readl(nfc->reg_base + NFC_REG_CFG); in meson_nfc_wait_rb_pin()
466 writel(cfg, nfc->reg_base + NFC_REG_CFG); in meson_nfc_wait_rb_pin()
468 reinit_completion(&nfc->completion); in meson_nfc_wait_rb_pin()
472 | nfc->param.chip_select | nfc->timing.tbers_max; in meson_nfc_wait_rb_pin()
473 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_wait_rb_pin()
475 ret = wait_for_completion_timeout(&nfc->completion, in meson_nfc_wait_rb_pin()
486 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_queue_rb() local
488 if (nfc->no_rb_pin) { in meson_nfc_queue_rb()
502 return meson_nfc_wait_rb_pin(nfc, timeout_ms); in meson_nfc_queue_rb()
565 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_dma_buffer_setup() local
569 nfc->daddr = dma_map_single(nfc->dev, databuf, datalen, dir); in meson_nfc_dma_buffer_setup()
570 ret = dma_mapping_error(nfc->dev, nfc->daddr); in meson_nfc_dma_buffer_setup()
572 dev_err(nfc->dev, "DMA mapping error\n"); in meson_nfc_dma_buffer_setup()
575 cmd = GENCMDDADDRL(NFC_CMD_ADL, nfc->daddr); in meson_nfc_dma_buffer_setup()
576 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_dma_buffer_setup()
578 cmd = GENCMDDADDRH(NFC_CMD_ADH, nfc->daddr); in meson_nfc_dma_buffer_setup()
579 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_dma_buffer_setup()
582 nfc->iaddr = dma_map_single(nfc->dev, infobuf, infolen, dir); in meson_nfc_dma_buffer_setup()
583 ret = dma_mapping_error(nfc->dev, nfc->iaddr); in meson_nfc_dma_buffer_setup()
585 dev_err(nfc->dev, "DMA mapping error\n"); in meson_nfc_dma_buffer_setup()
586 dma_unmap_single(nfc->dev, in meson_nfc_dma_buffer_setup()
587 nfc->daddr, datalen, dir); in meson_nfc_dma_buffer_setup()
590 nfc->info_bytes = infolen; in meson_nfc_dma_buffer_setup()
591 cmd = GENCMDIADDRL(NFC_CMD_AIL, nfc->iaddr); in meson_nfc_dma_buffer_setup()
592 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_dma_buffer_setup()
594 cmd = GENCMDIADDRH(NFC_CMD_AIH, nfc->iaddr); in meson_nfc_dma_buffer_setup()
595 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_dma_buffer_setup()
605 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_dma_buffer_release() local
607 dma_unmap_single(nfc->dev, nfc->daddr, datalen, dir); in meson_nfc_dma_buffer_release()
609 dma_unmap_single(nfc->dev, nfc->iaddr, infolen, dir); in meson_nfc_dma_buffer_release()
610 nfc->info_bytes = 0; in meson_nfc_dma_buffer_release()
616 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_read_buf() local
631 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_read_buf()
633 meson_nfc_drain_cmd(nfc); in meson_nfc_read_buf()
634 meson_nfc_wait_cmd_finish(nfc, 1000); in meson_nfc_read_buf()
645 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_write_buf() local
655 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_write_buf()
657 meson_nfc_drain_cmd(nfc); in meson_nfc_write_buf()
658 meson_nfc_wait_cmd_finish(nfc, 1000); in meson_nfc_write_buf()
670 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_rw_cmd_prepare_and_execute() local
671 u32 *addrs = nfc->cmdfifo.rw.addrs; in meson_nfc_rw_cmd_prepare_and_execute()
672 u32 cs = nfc->param.chip_select; in meson_nfc_rw_cmd_prepare_and_execute()
679 nfc->cmdfifo.rw.cmd0 = cs | NFC_CMD_CLE | cmd0; in meson_nfc_rw_cmd_prepare_and_execute()
703 writel_relaxed(nfc->cmdfifo.cmd[i], in meson_nfc_rw_cmd_prepare_and_execute()
704 nfc->reg_base + NFC_REG_CMD); in meson_nfc_rw_cmd_prepare_and_execute()
707 nfc->cmdfifo.rw.cmd1 = cs | NFC_CMD_CLE | NAND_CMD_READSTART; in meson_nfc_rw_cmd_prepare_and_execute()
708 writel(nfc->cmdfifo.rw.cmd1, nfc->reg_base + NFC_REG_CMD); in meson_nfc_rw_cmd_prepare_and_execute()
711 meson_nfc_cmd_idle(nfc, nfc->timing.tadl); in meson_nfc_rw_cmd_prepare_and_execute()
724 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_write_page_sub() local
745 meson_nfc_cmd_seed(nfc, page); in meson_nfc_write_page_sub()
753 cmd = nfc->param.chip_select | NFC_CMD_CLE | NAND_CMD_PAGEPROG; in meson_nfc_write_page_sub()
754 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_write_page_sub()
786 static void meson_nfc_check_ecc_pages_valid(struct meson_nfc *nfc, in meson_nfc_check_ecc_pages_valid() argument
798 /* info is updated by nfc dma engine*/ in meson_nfc_check_ecc_pages_valid()
800 dma_sync_single_for_cpu(nfc->dev, nfc->iaddr, nfc->info_bytes, in meson_nfc_check_ecc_pages_valid()
810 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_read_page_sub() local
831 meson_nfc_cmd_seed(nfc, page); in meson_nfc_read_page_sub()
839 ret = meson_nfc_wait_dma_finish(nfc); in meson_nfc_read_page_sub()
840 meson_nfc_check_ecc_pages_valid(nfc, nand, raw); in meson_nfc_read_page_sub()
1017 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_exec_op() local
1039 cmd = nfc->param.chip_select | NFC_CMD_CLE; in meson_nfc_exec_op()
1041 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_exec_op()
1042 meson_nfc_cmd_idle(nfc, delay_idle); in meson_nfc_exec_op()
1047 cmd = nfc->param.chip_select | NFC_CMD_ALE; in meson_nfc_exec_op()
1049 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_exec_op()
1051 meson_nfc_cmd_idle(nfc, delay_idle); in meson_nfc_exec_op()
1074 meson_nfc_cmd_idle(nfc, delay_idle); in meson_nfc_exec_op()
1078 meson_nfc_wait_cmd_finish(nfc, 1000); in meson_nfc_exec_op()
1115 static int meson_nfc_clk_init(struct meson_nfc *nfc) in meson_nfc_clk_init() argument
1122 nfc->core_clk = devm_clk_get(nfc->dev, "core"); in meson_nfc_clk_init()
1123 if (IS_ERR(nfc->core_clk)) { in meson_nfc_clk_init()
1124 dev_err(nfc->dev, "failed to get core clock\n"); in meson_nfc_clk_init()
1125 return PTR_ERR(nfc->core_clk); in meson_nfc_clk_init()
1128 nfc->device_clk = devm_clk_get(nfc->dev, "device"); in meson_nfc_clk_init()
1129 if (IS_ERR(nfc->device_clk)) { in meson_nfc_clk_init()
1130 dev_err(nfc->dev, "failed to get device clock\n"); in meson_nfc_clk_init()
1131 return PTR_ERR(nfc->device_clk); in meson_nfc_clk_init()
1134 init.name = devm_kasprintf(nfc->dev, in meson_nfc_clk_init()
1136 dev_name(nfc->dev)); in meson_nfc_clk_init()
1144 nfc->nand_divider.reg = nfc->reg_clk; in meson_nfc_clk_init()
1145 nfc->nand_divider.shift = CLK_DIV_SHIFT; in meson_nfc_clk_init()
1146 nfc->nand_divider.width = CLK_DIV_WIDTH; in meson_nfc_clk_init()
1147 nfc->nand_divider.hw.init = &init; in meson_nfc_clk_init()
1148 nfc->nand_divider.flags = CLK_DIVIDER_ONE_BASED | in meson_nfc_clk_init()
1152 nfc->nand_clk = devm_clk_register(nfc->dev, &nfc->nand_divider.hw); in meson_nfc_clk_init()
1153 if (IS_ERR(nfc->nand_clk)) in meson_nfc_clk_init()
1154 return PTR_ERR(nfc->nand_clk); in meson_nfc_clk_init()
1157 writel(CLK_SELECT_NAND | readl(nfc->reg_clk), in meson_nfc_clk_init()
1158 nfc->reg_clk); in meson_nfc_clk_init()
1160 ret = clk_prepare_enable(nfc->core_clk); in meson_nfc_clk_init()
1162 dev_err(nfc->dev, "failed to enable core clock\n"); in meson_nfc_clk_init()
1166 ret = clk_prepare_enable(nfc->device_clk); in meson_nfc_clk_init()
1168 dev_err(nfc->dev, "failed to enable device clock\n"); in meson_nfc_clk_init()
1172 ret = clk_prepare_enable(nfc->nand_clk); in meson_nfc_clk_init()
1174 dev_err(nfc->dev, "pre enable NFC divider fail\n"); in meson_nfc_clk_init()
1178 ret = clk_set_rate(nfc->nand_clk, 24000000); in meson_nfc_clk_init()
1185 clk_disable_unprepare(nfc->nand_clk); in meson_nfc_clk_init()
1187 clk_disable_unprepare(nfc->device_clk); in meson_nfc_clk_init()
1189 clk_disable_unprepare(nfc->core_clk); in meson_nfc_clk_init()
1193 static void meson_nfc_disable_clk(struct meson_nfc *nfc) in meson_nfc_disable_clk() argument
1195 clk_disable_unprepare(nfc->nand_clk); in meson_nfc_disable_clk()
1196 clk_disable_unprepare(nfc->device_clk); in meson_nfc_disable_clk()
1197 clk_disable_unprepare(nfc->core_clk); in meson_nfc_disable_clk()
1301 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nand_attach_chip() local
1308 mtd->name = devm_kasprintf(nfc->dev, GFP_KERNEL, in meson_nand_attach_chip()
1310 dev_name(nfc->dev), in meson_nand_attach_chip()
1318 dev_err(nfc->dev, "too big write size in raw mode: %d > %ld\n", in meson_nand_attach_chip()
1328 ret = nand_ecc_choose_conf(nand, nfc->data->ecc_caps, in meson_nand_attach_chip()
1331 dev_err(nfc->dev, "failed to ECC init\n"); in meson_nand_attach_chip()
1353 dev_err(nfc->dev, "16bits bus width not supported"); in meson_nand_attach_chip()
1372 struct meson_nfc *nfc, struct device_node *np) in meson_nfc_nand_chip_init() argument
1402 if (test_and_set_bit(tmp, &nfc->assigned_cs)) { in meson_nfc_nand_chip_init()
1409 nand->controller = &nfc->controller; in meson_nfc_nand_chip_init()
1412 nand_set_controller_data(nand, nfc); in meson_nfc_nand_chip_init()
1421 nfc->no_rb_pin = true; in meson_nfc_nand_chip_init()
1439 list_add_tail(&meson_chip->node, &nfc->chips); in meson_nfc_nand_chip_init()
1444 static void meson_nfc_nand_chip_cleanup(struct meson_nfc *nfc) in meson_nfc_nand_chip_cleanup() argument
1449 while (!list_empty(&nfc->chips)) { in meson_nfc_nand_chip_cleanup()
1450 meson_chip = list_first_entry(&nfc->chips, in meson_nfc_nand_chip_cleanup()
1461 struct meson_nfc *nfc) in meson_nfc_nand_chips_init() argument
1468 ret = meson_nfc_nand_chip_init(dev, nfc, nand_np); in meson_nfc_nand_chips_init()
1470 meson_nfc_nand_chip_cleanup(nfc); in meson_nfc_nand_chips_init()
1481 struct meson_nfc *nfc = id; in meson_nfc_irq() local
1484 cfg = readl(nfc->reg_base + NFC_REG_CFG); in meson_nfc_irq()
1489 writel(cfg, nfc->reg_base + NFC_REG_CFG); in meson_nfc_irq()
1491 complete(&nfc->completion); in meson_nfc_irq()
1505 .compatible = "amlogic,meson-gxl-nfc",
1508 .compatible = "amlogic,meson-axg-nfc",
1518 struct meson_nfc *nfc; in meson_nfc_probe() local
1521 nfc = devm_kzalloc(dev, sizeof(*nfc), GFP_KERNEL); in meson_nfc_probe()
1522 if (!nfc) in meson_nfc_probe()
1525 nfc->data = of_device_get_match_data(&pdev->dev); in meson_nfc_probe()
1526 if (!nfc->data) in meson_nfc_probe()
1529 nand_controller_init(&nfc->controller); in meson_nfc_probe()
1530 INIT_LIST_HEAD(&nfc->chips); in meson_nfc_probe()
1531 init_completion(&nfc->completion); in meson_nfc_probe()
1533 nfc->dev = dev; in meson_nfc_probe()
1535 nfc->reg_base = devm_platform_ioremap_resource_byname(pdev, "nfc"); in meson_nfc_probe()
1536 if (IS_ERR(nfc->reg_base)) in meson_nfc_probe()
1537 return PTR_ERR(nfc->reg_base); in meson_nfc_probe()
1539 nfc->reg_clk = devm_platform_ioremap_resource_byname(pdev, "emmc"); in meson_nfc_probe()
1540 if (IS_ERR(nfc->reg_clk)) in meson_nfc_probe()
1541 return PTR_ERR(nfc->reg_clk); in meson_nfc_probe()
1547 ret = meson_nfc_clk_init(nfc); in meson_nfc_probe()
1553 writel(0, nfc->reg_base + NFC_REG_CFG); in meson_nfc_probe()
1554 ret = devm_request_irq(dev, irq, meson_nfc_irq, 0, dev_name(dev), nfc); in meson_nfc_probe()
1556 dev_err(dev, "failed to request NFC IRQ\n"); in meson_nfc_probe()
1567 platform_set_drvdata(pdev, nfc); in meson_nfc_probe()
1569 ret = meson_nfc_nand_chips_init(dev, nfc); in meson_nfc_probe()
1577 meson_nfc_disable_clk(nfc); in meson_nfc_probe()
1583 struct meson_nfc *nfc = platform_get_drvdata(pdev); in meson_nfc_remove() local
1585 meson_nfc_nand_chip_cleanup(nfc); in meson_nfc_remove()
1587 meson_nfc_disable_clk(nfc); in meson_nfc_remove()