Lines Matching full:nfc
184 static int mxic_nfc_clk_enable(struct mxic_nand_ctlr *nfc) in mxic_nfc_clk_enable() argument
188 ret = clk_prepare_enable(nfc->ps_clk); in mxic_nfc_clk_enable()
192 ret = clk_prepare_enable(nfc->send_clk); in mxic_nfc_clk_enable()
196 ret = clk_prepare_enable(nfc->send_dly_clk); in mxic_nfc_clk_enable()
203 clk_disable_unprepare(nfc->send_clk); in mxic_nfc_clk_enable()
205 clk_disable_unprepare(nfc->ps_clk); in mxic_nfc_clk_enable()
210 static void mxic_nfc_clk_disable(struct mxic_nand_ctlr *nfc) in mxic_nfc_clk_disable() argument
212 clk_disable_unprepare(nfc->send_clk); in mxic_nfc_clk_disable()
213 clk_disable_unprepare(nfc->send_dly_clk); in mxic_nfc_clk_disable()
214 clk_disable_unprepare(nfc->ps_clk); in mxic_nfc_clk_disable()
217 static void mxic_nfc_set_input_delay(struct mxic_nand_ctlr *nfc, u8 idly_code) in mxic_nfc_set_input_delay() argument
223 nfc->regs + IDLY_CODE(0)); in mxic_nfc_set_input_delay()
228 nfc->regs + IDLY_CODE(1)); in mxic_nfc_set_input_delay()
231 static int mxic_nfc_clk_setup(struct mxic_nand_ctlr *nfc, unsigned long freq) in mxic_nfc_clk_setup() argument
235 ret = clk_set_rate(nfc->send_clk, freq); in mxic_nfc_clk_setup()
239 ret = clk_set_rate(nfc->send_dly_clk, freq); in mxic_nfc_clk_setup()
247 mxic_nfc_set_input_delay(nfc, 0xf); in mxic_nfc_clk_setup()
257 ret = clk_set_phase(nfc->send_dly_clk, 9 * freq / 25000000); in mxic_nfc_clk_setup()
264 static int mxic_nfc_set_freq(struct mxic_nand_ctlr *nfc, unsigned long freq) in mxic_nfc_set_freq() argument
271 mxic_nfc_clk_disable(nfc); in mxic_nfc_set_freq()
272 ret = mxic_nfc_clk_setup(nfc, freq); in mxic_nfc_set_freq()
276 ret = mxic_nfc_clk_enable(nfc); in mxic_nfc_set_freq()
285 struct mxic_nand_ctlr *nfc = dev_id; in mxic_nfc_isr() local
288 sts = readl(nfc->regs + INT_STS); in mxic_nfc_isr()
290 complete(&nfc->complete); in mxic_nfc_isr()
297 static void mxic_nfc_hw_init(struct mxic_nand_ctlr *nfc) in mxic_nfc_hw_init() argument
301 HC_CFG_IDLE_SIO_LVL(1), nfc->regs + HC_CFG); in mxic_nfc_hw_init()
302 writel(INT_STS_ALL, nfc->regs + INT_STS_EN); in mxic_nfc_hw_init()
303 writel(INT_RDY_PIN, nfc->regs + INT_SIG_EN); in mxic_nfc_hw_init()
304 writel(0x0, nfc->regs + ONFI_DIN_CNT(0)); in mxic_nfc_hw_init()
305 writel(0, nfc->regs + LRD_CFG); in mxic_nfc_hw_init()
306 writel(0, nfc->regs + LRD_CTRL); in mxic_nfc_hw_init()
307 writel(0x0, nfc->regs + HC_EN); in mxic_nfc_hw_init()
310 static void mxic_nfc_cs_enable(struct mxic_nand_ctlr *nfc) in mxic_nfc_cs_enable() argument
312 writel(readl(nfc->regs + HC_CFG) | HC_CFG_MAN_CS_EN, in mxic_nfc_cs_enable()
313 nfc->regs + HC_CFG); in mxic_nfc_cs_enable()
314 writel(HC_CFG_MAN_CS_ASSERT | readl(nfc->regs + HC_CFG), in mxic_nfc_cs_enable()
315 nfc->regs + HC_CFG); in mxic_nfc_cs_enable()
318 static void mxic_nfc_cs_disable(struct mxic_nand_ctlr *nfc) in mxic_nfc_cs_disable() argument
320 writel(~HC_CFG_MAN_CS_ASSERT & readl(nfc->regs + HC_CFG), in mxic_nfc_cs_disable()
321 nfc->regs + HC_CFG); in mxic_nfc_cs_disable()
326 struct mxic_nand_ctlr *nfc = nand_get_controller_data(chip); in mxic_nfc_wait_ready() local
329 ret = wait_for_completion_timeout(&nfc->complete, in mxic_nfc_wait_ready()
332 dev_err(nfc->dev, "nand device timeout\n"); in mxic_nfc_wait_ready()
339 static int mxic_nfc_data_xfer(struct mxic_nand_ctlr *nfc, const void *txbuf, in mxic_nfc_data_xfer() argument
356 ret = readl_poll_timeout(nfc->regs + INT_STS, sts, in mxic_nfc_data_xfer()
361 writel(data, nfc->regs + TXD(nbytes % 4)); in mxic_nfc_data_xfer()
363 ret = readl_poll_timeout(nfc->regs + INT_STS, sts, in mxic_nfc_data_xfer()
368 ret = readl_poll_timeout(nfc->regs + INT_STS, sts, in mxic_nfc_data_xfer()
374 data = readl(nfc->regs + RXD); in mxic_nfc_data_xfer()
379 if (readl(nfc->regs + INT_STS) & INT_RX_NOT_EMPTY) in mxic_nfc_data_xfer()
380 dev_warn(nfc->dev, "RX FIFO not empty\n"); in mxic_nfc_data_xfer()
391 struct mxic_nand_ctlr *nfc = nand_get_controller_data(chip); in mxic_nfc_exec_op() local
399 mxic_nfc_cs_enable(nfc); in mxic_nfc_exec_op()
400 init_completion(&nfc->complete); in mxic_nfc_exec_op()
406 writel(0, nfc->regs + HC_EN); in mxic_nfc_exec_op()
407 writel(HC_EN_BIT, nfc->regs + HC_EN); in mxic_nfc_exec_op()
409 OP_CMD_BYTES(0), nfc->regs + SS_CTRL(0)); in mxic_nfc_exec_op()
411 ret = mxic_nfc_data_xfer(nfc, in mxic_nfc_exec_op()
419 nfc->regs + SS_CTRL(0)); in mxic_nfc_exec_op()
420 ret = mxic_nfc_data_xfer(nfc, in mxic_nfc_exec_op()
426 writel(0x0, nfc->regs + ONFI_DIN_CNT(0)); in mxic_nfc_exec_op()
428 OP_READ, nfc->regs + SS_CTRL(0)); in mxic_nfc_exec_op()
429 ret = mxic_nfc_data_xfer(nfc, NULL, in mxic_nfc_exec_op()
436 nfc->regs + ONFI_DIN_CNT(0)); in mxic_nfc_exec_op()
438 nfc->regs + SS_CTRL(0)); in mxic_nfc_exec_op()
439 ret = mxic_nfc_data_xfer(nfc, in mxic_nfc_exec_op()
449 mxic_nfc_cs_disable(nfc); in mxic_nfc_exec_op()
457 struct mxic_nand_ctlr *nfc = nand_get_controller_data(chip); in mxic_nfc_setup_interface() local
471 ret = mxic_nfc_set_freq(nfc, freq); in mxic_nfc_setup_interface()
473 dev_err(nfc->dev, "set freq:%ld failed\n", freq); in mxic_nfc_setup_interface()
476 writel(DATA_STROB_EDO_EN, nfc->regs + DATA_STROB); in mxic_nfc_setup_interface()
490 struct mxic_nand_ctlr *nfc; in mxic_nfc_probe() local
495 nfc = devm_kzalloc(&pdev->dev, sizeof(struct mxic_nand_ctlr), in mxic_nfc_probe()
497 if (!nfc) in mxic_nfc_probe()
500 nfc->ps_clk = devm_clk_get(&pdev->dev, "ps"); in mxic_nfc_probe()
501 if (IS_ERR(nfc->ps_clk)) in mxic_nfc_probe()
502 return PTR_ERR(nfc->ps_clk); in mxic_nfc_probe()
504 nfc->send_clk = devm_clk_get(&pdev->dev, "send"); in mxic_nfc_probe()
505 if (IS_ERR(nfc->send_clk)) in mxic_nfc_probe()
506 return PTR_ERR(nfc->send_clk); in mxic_nfc_probe()
508 nfc->send_dly_clk = devm_clk_get(&pdev->dev, "send_dly"); in mxic_nfc_probe()
509 if (IS_ERR(nfc->send_dly_clk)) in mxic_nfc_probe()
510 return PTR_ERR(nfc->send_dly_clk); in mxic_nfc_probe()
512 nfc->regs = devm_platform_ioremap_resource(pdev, 0); in mxic_nfc_probe()
513 if (IS_ERR(nfc->regs)) in mxic_nfc_probe()
514 return PTR_ERR(nfc->regs); in mxic_nfc_probe()
516 nand_chip = &nfc->chip; in mxic_nfc_probe()
523 nand_chip->priv = nfc; in mxic_nfc_probe()
524 nfc->dev = &pdev->dev; in mxic_nfc_probe()
525 nfc->controller.ops = &mxic_nand_controller_ops; in mxic_nfc_probe()
526 nand_controller_init(&nfc->controller); in mxic_nfc_probe()
527 nand_chip->controller = &nfc->controller; in mxic_nfc_probe()
533 mxic_nfc_hw_init(nfc); in mxic_nfc_probe()
536 0, "mxic-nfc", nfc); in mxic_nfc_probe()
548 platform_set_drvdata(pdev, nfc); in mxic_nfc_probe()
552 mxic_nfc_clk_disable(nfc); in mxic_nfc_probe()
558 struct mxic_nand_ctlr *nfc = platform_get_drvdata(pdev); in mxic_nfc_remove() local
559 struct nand_chip *chip = &nfc->chip; in mxic_nfc_remove()
566 mxic_nfc_clk_disable(nfc); in mxic_nfc_remove()
580 .name = "mxic-nfc",