Lines Matching full:nfc
261 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_select_chip() local
267 nfc->param.chip_select = meson_chip->sels[chip] ? NAND_CE1 : NAND_CE0; in meson_nfc_select_chip()
268 nfc->param.rb_select = nfc->param.chip_select; in meson_nfc_select_chip()
269 nfc->timing.twb = meson_chip->twb; in meson_nfc_select_chip()
270 nfc->timing.tadl = meson_chip->tadl; in meson_nfc_select_chip()
271 nfc->timing.tbers_max = meson_chip->tbers_max; in meson_nfc_select_chip()
273 if (nfc->clk_rate != meson_chip->clk_rate) { in meson_nfc_select_chip()
274 ret = clk_set_rate(nfc->nand_clk, meson_chip->clk_rate); in meson_nfc_select_chip()
276 dev_err(nfc->dev, "failed to set clock rate\n"); in meson_nfc_select_chip()
279 nfc->clk_rate = meson_chip->clk_rate; in meson_nfc_select_chip()
281 if (nfc->bus_timing != meson_chip->bus_timing) { in meson_nfc_select_chip()
283 writel(value, nfc->reg_base + NFC_REG_CFG); in meson_nfc_select_chip()
284 writel((1 << 31), nfc->reg_base + NFC_REG_CMD); in meson_nfc_select_chip()
285 nfc->bus_timing = meson_chip->bus_timing; in meson_nfc_select_chip()
289 static void meson_nfc_cmd_idle(struct meson_nfc *nfc, u32 time) in meson_nfc_cmd_idle() argument
291 writel(nfc->param.chip_select | NFC_CMD_IDLE | (time & 0x3ff), in meson_nfc_cmd_idle()
292 nfc->reg_base + NFC_REG_CMD); in meson_nfc_cmd_idle()
295 static void meson_nfc_cmd_seed(struct meson_nfc *nfc, u32 seed) in meson_nfc_cmd_seed() argument
298 nfc->reg_base + NFC_REG_CMD); in meson_nfc_cmd_seed()
305 struct meson_nfc *nfc = nand_get_controller_data(mtd_to_nand(mtd)); in meson_nfc_cmd_access() local
315 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_cmd_access()
324 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_cmd_access()
327 static void meson_nfc_drain_cmd(struct meson_nfc *nfc) in meson_nfc_drain_cmd() argument
336 * one is fetched into NFC request queue (ready to run), and another in meson_nfc_drain_cmd()
340 meson_nfc_cmd_idle(nfc, 0); in meson_nfc_drain_cmd()
341 meson_nfc_cmd_idle(nfc, 0); in meson_nfc_drain_cmd()
344 static int meson_nfc_wait_cmd_finish(struct meson_nfc *nfc, in meson_nfc_wait_cmd_finish() argument
351 ret = readl_relaxed_poll_timeout(nfc->reg_base + NFC_REG_CMD, cmd_size, in meson_nfc_wait_cmd_finish()
355 dev_err(nfc->dev, "wait for empty CMD FIFO time out\n"); in meson_nfc_wait_cmd_finish()
360 static int meson_nfc_wait_dma_finish(struct meson_nfc *nfc) in meson_nfc_wait_dma_finish() argument
362 meson_nfc_drain_cmd(nfc); in meson_nfc_wait_dma_finish()
364 return meson_nfc_wait_cmd_finish(nfc, DMA_BUSY_TIMEOUT); in meson_nfc_wait_dma_finish()
429 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_wait_no_rb_pin() local
432 meson_nfc_cmd_idle(nfc, nfc->timing.twb); in meson_nfc_wait_no_rb_pin()
433 meson_nfc_drain_cmd(nfc); in meson_nfc_wait_no_rb_pin()
434 meson_nfc_wait_cmd_finish(nfc, CMD_FIFO_EMPTY_TIMEOUT); in meson_nfc_wait_no_rb_pin()
436 cfg = readl(nfc->reg_base + NFC_REG_CFG); in meson_nfc_wait_no_rb_pin()
438 writel(cfg, nfc->reg_base + NFC_REG_CFG); in meson_nfc_wait_no_rb_pin()
440 reinit_completion(&nfc->completion); in meson_nfc_wait_no_rb_pin()
444 cmd = NFC_CMD_RB | NFC_CMD_RB_INT_NO_PIN | nfc->timing.tbers_max; in meson_nfc_wait_no_rb_pin()
445 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_wait_no_rb_pin()
447 if (!wait_for_completion_timeout(&nfc->completion, in meson_nfc_wait_no_rb_pin()
457 static int meson_nfc_wait_rb_pin(struct meson_nfc *nfc, int timeout_ms) in meson_nfc_wait_rb_pin() argument
462 meson_nfc_cmd_idle(nfc, nfc->timing.twb); in meson_nfc_wait_rb_pin()
463 meson_nfc_drain_cmd(nfc); in meson_nfc_wait_rb_pin()
464 meson_nfc_wait_cmd_finish(nfc, CMD_FIFO_EMPTY_TIMEOUT); in meson_nfc_wait_rb_pin()
466 cfg = readl(nfc->reg_base + NFC_REG_CFG); in meson_nfc_wait_rb_pin()
468 writel(cfg, nfc->reg_base + NFC_REG_CFG); in meson_nfc_wait_rb_pin()
470 reinit_completion(&nfc->completion); in meson_nfc_wait_rb_pin()
474 | nfc->param.chip_select | nfc->timing.tbers_max; in meson_nfc_wait_rb_pin()
475 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_wait_rb_pin()
477 ret = wait_for_completion_timeout(&nfc->completion, in meson_nfc_wait_rb_pin()
488 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_queue_rb() local
490 if (nfc->no_rb_pin) { in meson_nfc_queue_rb()
504 return meson_nfc_wait_rb_pin(nfc, timeout_ms); in meson_nfc_queue_rb()
567 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_dma_buffer_setup() local
571 nfc->daddr = dma_map_single(nfc->dev, databuf, datalen, dir); in meson_nfc_dma_buffer_setup()
572 ret = dma_mapping_error(nfc->dev, nfc->daddr); in meson_nfc_dma_buffer_setup()
574 dev_err(nfc->dev, "DMA mapping error\n"); in meson_nfc_dma_buffer_setup()
577 cmd = GENCMDDADDRL(NFC_CMD_ADL, nfc->daddr); in meson_nfc_dma_buffer_setup()
578 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_dma_buffer_setup()
580 cmd = GENCMDDADDRH(NFC_CMD_ADH, nfc->daddr); in meson_nfc_dma_buffer_setup()
581 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_dma_buffer_setup()
584 nfc->iaddr = dma_map_single(nfc->dev, infobuf, infolen, dir); in meson_nfc_dma_buffer_setup()
585 ret = dma_mapping_error(nfc->dev, nfc->iaddr); in meson_nfc_dma_buffer_setup()
587 dev_err(nfc->dev, "DMA mapping error\n"); in meson_nfc_dma_buffer_setup()
588 dma_unmap_single(nfc->dev, in meson_nfc_dma_buffer_setup()
589 nfc->daddr, datalen, dir); in meson_nfc_dma_buffer_setup()
592 nfc->info_bytes = infolen; in meson_nfc_dma_buffer_setup()
593 cmd = GENCMDIADDRL(NFC_CMD_AIL, nfc->iaddr); in meson_nfc_dma_buffer_setup()
594 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_dma_buffer_setup()
596 cmd = GENCMDIADDRH(NFC_CMD_AIH, nfc->iaddr); in meson_nfc_dma_buffer_setup()
597 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_dma_buffer_setup()
607 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_dma_buffer_release() local
609 dma_unmap_single(nfc->dev, nfc->daddr, datalen, dir); in meson_nfc_dma_buffer_release()
611 dma_unmap_single(nfc->dev, nfc->iaddr, infolen, dir); in meson_nfc_dma_buffer_release()
612 nfc->info_bytes = 0; in meson_nfc_dma_buffer_release()
618 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_read_buf() local
633 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_read_buf()
635 meson_nfc_drain_cmd(nfc); in meson_nfc_read_buf()
636 meson_nfc_wait_cmd_finish(nfc, 1000); in meson_nfc_read_buf()
647 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_write_buf() local
657 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_write_buf()
659 meson_nfc_drain_cmd(nfc); in meson_nfc_write_buf()
660 meson_nfc_wait_cmd_finish(nfc, 1000); in meson_nfc_write_buf()
672 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_rw_cmd_prepare_and_execute() local
673 u32 *addrs = nfc->cmdfifo.rw.addrs; in meson_nfc_rw_cmd_prepare_and_execute()
674 u32 cs = nfc->param.chip_select; in meson_nfc_rw_cmd_prepare_and_execute()
681 nfc->cmdfifo.rw.cmd0 = cs | NFC_CMD_CLE | cmd0; in meson_nfc_rw_cmd_prepare_and_execute()
705 writel_relaxed(nfc->cmdfifo.cmd[i], in meson_nfc_rw_cmd_prepare_and_execute()
706 nfc->reg_base + NFC_REG_CMD); in meson_nfc_rw_cmd_prepare_and_execute()
709 nfc->cmdfifo.rw.cmd1 = cs | NFC_CMD_CLE | NAND_CMD_READSTART; in meson_nfc_rw_cmd_prepare_and_execute()
710 writel(nfc->cmdfifo.rw.cmd1, nfc->reg_base + NFC_REG_CMD); in meson_nfc_rw_cmd_prepare_and_execute()
713 meson_nfc_cmd_idle(nfc, nfc->timing.tadl); in meson_nfc_rw_cmd_prepare_and_execute()
726 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_write_page_sub() local
747 meson_nfc_cmd_seed(nfc, page); in meson_nfc_write_page_sub()
755 cmd = nfc->param.chip_select | NFC_CMD_CLE | NAND_CMD_PAGEPROG; in meson_nfc_write_page_sub()
756 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_write_page_sub()
788 static void meson_nfc_check_ecc_pages_valid(struct meson_nfc *nfc, in meson_nfc_check_ecc_pages_valid() argument
800 /* info is updated by nfc dma engine*/ in meson_nfc_check_ecc_pages_valid()
802 dma_sync_single_for_cpu(nfc->dev, nfc->iaddr, nfc->info_bytes, in meson_nfc_check_ecc_pages_valid()
812 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_read_page_sub() local
833 meson_nfc_cmd_seed(nfc, page); in meson_nfc_read_page_sub()
841 ret = meson_nfc_wait_dma_finish(nfc); in meson_nfc_read_page_sub()
842 meson_nfc_check_ecc_pages_valid(nfc, nand, raw); in meson_nfc_read_page_sub()
1019 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nfc_exec_op() local
1041 cmd = nfc->param.chip_select | NFC_CMD_CLE; in meson_nfc_exec_op()
1043 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_exec_op()
1044 meson_nfc_cmd_idle(nfc, delay_idle); in meson_nfc_exec_op()
1049 cmd = nfc->param.chip_select | NFC_CMD_ALE; in meson_nfc_exec_op()
1051 writel(cmd, nfc->reg_base + NFC_REG_CMD); in meson_nfc_exec_op()
1053 meson_nfc_cmd_idle(nfc, delay_idle); in meson_nfc_exec_op()
1076 meson_nfc_cmd_idle(nfc, delay_idle); in meson_nfc_exec_op()
1080 meson_nfc_wait_cmd_finish(nfc, 1000); in meson_nfc_exec_op()
1117 static int meson_nfc_clk_init(struct meson_nfc *nfc) in meson_nfc_clk_init() argument
1124 nfc->core_clk = devm_clk_get(nfc->dev, "core"); in meson_nfc_clk_init()
1125 if (IS_ERR(nfc->core_clk)) { in meson_nfc_clk_init()
1126 dev_err(nfc->dev, "failed to get core clock\n"); in meson_nfc_clk_init()
1127 return PTR_ERR(nfc->core_clk); in meson_nfc_clk_init()
1130 nfc->device_clk = devm_clk_get(nfc->dev, "device"); in meson_nfc_clk_init()
1131 if (IS_ERR(nfc->device_clk)) { in meson_nfc_clk_init()
1132 dev_err(nfc->dev, "failed to get device clock\n"); in meson_nfc_clk_init()
1133 return PTR_ERR(nfc->device_clk); in meson_nfc_clk_init()
1136 init.name = devm_kasprintf(nfc->dev, in meson_nfc_clk_init()
1138 dev_name(nfc->dev)); in meson_nfc_clk_init()
1146 nfc->nand_divider.reg = nfc->reg_clk; in meson_nfc_clk_init()
1147 nfc->nand_divider.shift = CLK_DIV_SHIFT; in meson_nfc_clk_init()
1148 nfc->nand_divider.width = CLK_DIV_WIDTH; in meson_nfc_clk_init()
1149 nfc->nand_divider.hw.init = &init; in meson_nfc_clk_init()
1150 nfc->nand_divider.flags = CLK_DIVIDER_ONE_BASED | in meson_nfc_clk_init()
1154 nfc->nand_clk = devm_clk_register(nfc->dev, &nfc->nand_divider.hw); in meson_nfc_clk_init()
1155 if (IS_ERR(nfc->nand_clk)) in meson_nfc_clk_init()
1156 return PTR_ERR(nfc->nand_clk); in meson_nfc_clk_init()
1160 nfc->reg_clk); in meson_nfc_clk_init()
1162 ret = clk_prepare_enable(nfc->core_clk); in meson_nfc_clk_init()
1164 dev_err(nfc->dev, "failed to enable core clock\n"); in meson_nfc_clk_init()
1168 ret = clk_prepare_enable(nfc->device_clk); in meson_nfc_clk_init()
1170 dev_err(nfc->dev, "failed to enable device clock\n"); in meson_nfc_clk_init()
1174 ret = clk_prepare_enable(nfc->nand_clk); in meson_nfc_clk_init()
1176 dev_err(nfc->dev, "pre enable NFC divider fail\n"); in meson_nfc_clk_init()
1180 ret = clk_set_rate(nfc->nand_clk, 24000000); in meson_nfc_clk_init()
1187 clk_disable_unprepare(nfc->nand_clk); in meson_nfc_clk_init()
1189 clk_disable_unprepare(nfc->device_clk); in meson_nfc_clk_init()
1191 clk_disable_unprepare(nfc->core_clk); in meson_nfc_clk_init()
1195 static void meson_nfc_disable_clk(struct meson_nfc *nfc) in meson_nfc_disable_clk() argument
1197 clk_disable_unprepare(nfc->nand_clk); in meson_nfc_disable_clk()
1198 clk_disable_unprepare(nfc->device_clk); in meson_nfc_disable_clk()
1199 clk_disable_unprepare(nfc->core_clk); in meson_nfc_disable_clk()
1303 struct meson_nfc *nfc = nand_get_controller_data(nand); in meson_nand_attach_chip() local
1310 mtd->name = devm_kasprintf(nfc->dev, GFP_KERNEL, in meson_nand_attach_chip()
1312 dev_name(nfc->dev), in meson_nand_attach_chip()
1320 dev_err(nfc->dev, "too big write size in raw mode: %d > %ld\n", in meson_nand_attach_chip()
1330 ret = nand_ecc_choose_conf(nand, nfc->data->ecc_caps, in meson_nand_attach_chip()
1333 dev_err(nfc->dev, "failed to ECC init\n"); in meson_nand_attach_chip()
1355 dev_err(nfc->dev, "16bits bus width not supported"); in meson_nand_attach_chip()
1374 struct meson_nfc *nfc, struct device_node *np) in meson_nfc_nand_chip_init() argument
1404 if (test_and_set_bit(tmp, &nfc->assigned_cs)) { in meson_nfc_nand_chip_init()
1411 nand->controller = &nfc->controller; in meson_nfc_nand_chip_init()
1414 nand_set_controller_data(nand, nfc); in meson_nfc_nand_chip_init()
1423 nfc->no_rb_pin = true; in meson_nfc_nand_chip_init()
1441 list_add_tail(&meson_chip->node, &nfc->chips); in meson_nfc_nand_chip_init()
1446 static void meson_nfc_nand_chip_cleanup(struct meson_nfc *nfc) in meson_nfc_nand_chip_cleanup() argument
1451 while (!list_empty(&nfc->chips)) { in meson_nfc_nand_chip_cleanup()
1452 meson_chip = list_first_entry(&nfc->chips, in meson_nfc_nand_chip_cleanup()
1463 struct meson_nfc *nfc) in meson_nfc_nand_chips_init() argument
1470 ret = meson_nfc_nand_chip_init(dev, nfc, nand_np); in meson_nfc_nand_chips_init()
1472 meson_nfc_nand_chip_cleanup(nfc); in meson_nfc_nand_chips_init()
1483 struct meson_nfc *nfc = id; in meson_nfc_irq() local
1486 cfg = readl(nfc->reg_base + NFC_REG_CFG); in meson_nfc_irq()
1491 writel(cfg, nfc->reg_base + NFC_REG_CFG); in meson_nfc_irq()
1493 complete(&nfc->completion); in meson_nfc_irq()
1507 .compatible = "amlogic,meson-gxl-nfc",
1510 .compatible = "amlogic,meson-axg-nfc",
1520 struct meson_nfc *nfc; in meson_nfc_probe() local
1523 nfc = devm_kzalloc(dev, sizeof(*nfc), GFP_KERNEL); in meson_nfc_probe()
1524 if (!nfc) in meson_nfc_probe()
1527 nfc->data = of_device_get_match_data(&pdev->dev); in meson_nfc_probe()
1528 if (!nfc->data) in meson_nfc_probe()
1531 nand_controller_init(&nfc->controller); in meson_nfc_probe()
1532 INIT_LIST_HEAD(&nfc->chips); in meson_nfc_probe()
1533 init_completion(&nfc->completion); in meson_nfc_probe()
1535 nfc->dev = dev; in meson_nfc_probe()
1537 nfc->reg_base = devm_platform_ioremap_resource_byname(pdev, "nfc"); in meson_nfc_probe()
1538 if (IS_ERR(nfc->reg_base)) in meson_nfc_probe()
1539 return PTR_ERR(nfc->reg_base); in meson_nfc_probe()
1541 nfc->reg_clk = devm_platform_ioremap_resource_byname(pdev, "emmc"); in meson_nfc_probe()
1542 if (IS_ERR(nfc->reg_clk)) in meson_nfc_probe()
1543 return PTR_ERR(nfc->reg_clk); in meson_nfc_probe()
1549 ret = meson_nfc_clk_init(nfc); in meson_nfc_probe()
1555 writel(0, nfc->reg_base + NFC_REG_CFG); in meson_nfc_probe()
1556 ret = devm_request_irq(dev, irq, meson_nfc_irq, 0, dev_name(dev), nfc); in meson_nfc_probe()
1558 dev_err(dev, "failed to request NFC IRQ\n"); in meson_nfc_probe()
1569 platform_set_drvdata(pdev, nfc); in meson_nfc_probe()
1571 ret = meson_nfc_nand_chips_init(dev, nfc); in meson_nfc_probe()
1579 meson_nfc_disable_clk(nfc); in meson_nfc_probe()
1585 struct meson_nfc *nfc = platform_get_drvdata(pdev); in meson_nfc_remove() local
1587 meson_nfc_nand_chip_cleanup(nfc); in meson_nfc_remove()
1589 meson_nfc_disable_clk(nfc); in meson_nfc_remove()