Lines Matching +full:phy +full:- +full:cadence
1 // SPDX-License-Identifier: GPL-2.0+
2 // Cadence XSPI flash controller driver
3 // Copyright (C) 2020-21 Cadence
18 #include <linux/spi/spi-mem.h>
25 #define CDNS_XSPI_NAME "cadence-xspi"
29 * configure XSPI controller pin-strap settings
32 /* PHY DQ timing register */
35 /* PHY DQS timing register */
38 /* PHY gate loopback control register */
41 /* PHY DLL slave control register */
44 /* DLL PHY control register */
155 FIELD_PREP(CDNS_XSPI_CMD_P1_R1_ADDR0, (op)->addr.val & 0xff))
158 FIELD_PREP(CDNS_XSPI_CMD_P1_R2_ADDR1, ((op)->addr.val >> 8) & 0xFF) | \
159 FIELD_PREP(CDNS_XSPI_CMD_P1_R2_ADDR2, ((op)->addr.val >> 16) & 0xFF) | \
160 FIELD_PREP(CDNS_XSPI_CMD_P1_R2_ADDR3, ((op)->addr.val >> 24) & 0xFF) | \
161 FIELD_PREP(CDNS_XSPI_CMD_P1_R2_ADDR4, ((op)->addr.val >> 32) & 0xFF))
164 FIELD_PREP(CDNS_XSPI_CMD_P1_R3_ADDR5, ((op)->addr.val >> 40) & 0xFF) | \
165 FIELD_PREP(CDNS_XSPI_CMD_P1_R3_CMD, (op)->cmd.opcode) | \
167 FIELD_PREP(CDNS_XSPI_CMD_P1_R3_NUM_ADDR_BYTES, (op)->addr.nbytes))
170 FIELD_PREP(CDNS_XSPI_CMD_P1_R4_ADDR_IOS, ilog2((op)->addr.buswidth)) | \
171 FIELD_PREP(CDNS_XSPI_CMD_P1_R4_CMD_IOS, ilog2((op)->cmd.buswidth)) | \
178 FIELD_PREP(CDNS_XSPI_CMD_DSEQ_R2_DCNT_L, (op)->data.nbytes & 0xFFFF)
182 ((op)->data.nbytes >> 16) & 0xffff) | \
184 (op)->dummy.buswidth != 0 ? \
185 (((dummybytes) * 8) / (op)->dummy.buswidth) : \
191 ilog2((op)->data.buswidth)) | \
193 ((op)->data.dir == SPI_MEM_DATA_IN) ? \
239 return readl_relaxed_poll_timeout(cdns_xspi->iobase + in cdns_xspi_wait_for_controller_idle()
250 writel(cmd_regs[5], cdns_xspi->iobase + CDNS_XSPI_CMD_REG_5); in cdns_xspi_trigger_command()
251 writel(cmd_regs[4], cdns_xspi->iobase + CDNS_XSPI_CMD_REG_4); in cdns_xspi_trigger_command()
252 writel(cmd_regs[3], cdns_xspi->iobase + CDNS_XSPI_CMD_REG_3); in cdns_xspi_trigger_command()
253 writel(cmd_regs[2], cdns_xspi->iobase + CDNS_XSPI_CMD_REG_2); in cdns_xspi_trigger_command()
254 writel(cmd_regs[1], cdns_xspi->iobase + CDNS_XSPI_CMD_REG_1); in cdns_xspi_trigger_command()
255 writel(cmd_regs[0], cdns_xspi->iobase + CDNS_XSPI_CMD_REG_0); in cdns_xspi_trigger_command()
261 u32 cmd_status = readl(cdns_xspi->iobase + CDNS_XSPI_CMD_STATUS_REG); in cdns_xspi_check_command_status()
266 dev_err(cdns_xspi->dev, in cdns_xspi_check_command_status()
268 ret = -EPROTO; in cdns_xspi_check_command_status()
271 dev_err(cdns_xspi->dev, in cdns_xspi_check_command_status()
273 ret = -EPROTO; in cdns_xspi_check_command_status()
276 dev_err(cdns_xspi->dev, in cdns_xspi_check_command_status()
278 ret = -EPROTO; in cdns_xspi_check_command_status()
281 dev_err(cdns_xspi->dev, in cdns_xspi_check_command_status()
283 ret = -EPROTO; in cdns_xspi_check_command_status()
287 dev_err(cdns_xspi->dev, "Fatal err - command not completed\n"); in cdns_xspi_check_command_status()
288 ret = -EPROTO; in cdns_xspi_check_command_status()
299 intr_enable = readl(cdns_xspi->iobase + CDNS_XSPI_INTR_ENABLE_REG); in cdns_xspi_set_interrupts()
304 writel(intr_enable, cdns_xspi->iobase + CDNS_XSPI_INTR_ENABLE_REG); in cdns_xspi_set_interrupts()
313 ctrl_ver = readl(cdns_xspi->iobase + CDNS_XSPI_CTRL_VERSION_REG); in cdns_xspi_controller_init()
316 dev_err(cdns_xspi->dev, in cdns_xspi_controller_init()
319 return -EIO; in cdns_xspi_controller_init()
322 ctrl_features = readl(cdns_xspi->iobase + CDNS_XSPI_CTRL_FEATURES_REG); in cdns_xspi_controller_init()
323 cdns_xspi->hw_num_banks = FIELD_GET(CDNS_XSPI_NUM_BANKS, ctrl_features); in cdns_xspi_controller_init()
334 sdma_size = readl(cdns_xspi->iobase + CDNS_XSPI_SDMA_SIZE_REG); in cdns_xspi_sdma_handle()
335 sdma_trd_info = readl(cdns_xspi->iobase + CDNS_XSPI_SDMA_TRD_INFO_REG); in cdns_xspi_sdma_handle()
340 ioread8_rep(cdns_xspi->sdmabase, in cdns_xspi_sdma_handle()
341 cdns_xspi->in_buffer, sdma_size); in cdns_xspi_sdma_handle()
345 iowrite8_rep(cdns_xspi->sdmabase, in cdns_xspi_sdma_handle()
346 cdns_xspi->out_buffer, sdma_size); in cdns_xspi_sdma_handle()
358 int dummybytes = op->dummy.nbytes; in cdns_xspi_send_stig_command()
362 return -EIO; in cdns_xspi_send_stig_command()
365 cdns_xspi->iobase + CDNS_XSPI_CTRL_CONFIG_REG); in cdns_xspi_send_stig_command()
368 cdns_xspi->sdma_error = false; in cdns_xspi_send_stig_command()
375 dummybytes--; in cdns_xspi_send_stig_command()
380 cdns_xspi->cur_cs); in cdns_xspi_send_stig_command()
390 cdns_xspi->cur_cs); in cdns_xspi_send_stig_command()
392 cdns_xspi->in_buffer = op->data.buf.in; in cdns_xspi_send_stig_command()
393 cdns_xspi->out_buffer = op->data.buf.out; in cdns_xspi_send_stig_command()
397 wait_for_completion(&cdns_xspi->sdma_complete); in cdns_xspi_send_stig_command()
398 if (cdns_xspi->sdma_error) { in cdns_xspi_send_stig_command()
400 return -EIO; in cdns_xspi_send_stig_command()
405 wait_for_completion(&cdns_xspi->cmd_complete); in cdns_xspi_send_stig_command()
410 return -EPROTO; in cdns_xspi_send_stig_command()
419 enum spi_mem_data_dir dir = op->data.dir; in cdns_xspi_mem_op()
421 if (cdns_xspi->cur_cs != spi_get_chipselect(mem->spi, 0)) in cdns_xspi_mem_op()
422 cdns_xspi->cur_cs = spi_get_chipselect(mem->spi, 0); in cdns_xspi_mem_op()
432 spi_controller_get_devdata(mem->spi->controller); in cdns_xspi_mem_op_execute()
443 spi_controller_get_devdata(mem->spi->controller); in cdns_xspi_adjust_mem_op_size()
445 op->data.nbytes = clamp_val(op->data.nbytes, 0, cdns_xspi->sdmasize); in cdns_xspi_adjust_mem_op_size()
461 irq_status = readl(cdns_xspi->iobase + CDNS_XSPI_INTR_STATUS_REG); in cdns_xspi_irq_handler()
462 writel(irq_status, cdns_xspi->iobase + CDNS_XSPI_INTR_STATUS_REG); in cdns_xspi_irq_handler()
468 dev_err(cdns_xspi->dev, in cdns_xspi_irq_handler()
470 cdns_xspi->sdma_error = true; in cdns_xspi_irq_handler()
471 complete(&cdns_xspi->sdma_complete); in cdns_xspi_irq_handler()
475 complete(&cdns_xspi->sdma_complete); in cdns_xspi_irq_handler()
478 complete(&cdns_xspi->cmd_complete); in cdns_xspi_irq_handler()
483 irq_status = readl(cdns_xspi->iobase + CDNS_XSPI_TRD_COMP_INTR_STATUS); in cdns_xspi_irq_handler()
486 cdns_xspi->iobase + CDNS_XSPI_TRD_COMP_INTR_STATUS); in cdns_xspi_irq_handler()
488 complete(&cdns_xspi->auto_cmd_complete); in cdns_xspi_irq_handler()
498 struct device_node *node_prop = pdev->dev.of_node; in cdns_xspi_of_get_plat_data()
507 dev_err(&pdev->dev, "Couldn't get memory chip select\n"); in cdns_xspi_of_get_plat_data()
509 return -ENXIO; in cdns_xspi_of_get_plat_data()
511 dev_err(&pdev->dev, "reg (cs) parameter value too large\n"); in cdns_xspi_of_get_plat_data()
513 return -ENXIO; in cdns_xspi_of_get_plat_data()
522 struct device *dev = cdns_xspi->dev; in cdns_xspi_print_phy_config()
524 dev_info(dev, "PHY configuration\n"); in cdns_xspi_print_phy_config()
526 readl(cdns_xspi->iobase + CDNS_XSPI_DLL_PHY_CTRL)); in cdns_xspi_print_phy_config()
528 readl(cdns_xspi->auxbase + CDNS_XSPI_CCP_PHY_DQ_TIMING)); in cdns_xspi_print_phy_config()
530 readl(cdns_xspi->auxbase + CDNS_XSPI_CCP_PHY_DQS_TIMING)); in cdns_xspi_print_phy_config()
532 readl(cdns_xspi->auxbase + CDNS_XSPI_CCP_PHY_GATE_LPBCK_CTRL)); in cdns_xspi_print_phy_config()
534 readl(cdns_xspi->auxbase + CDNS_XSPI_CCP_PHY_DLL_SLAVE_CTRL)); in cdns_xspi_print_phy_config()
539 struct device *dev = &pdev->dev; in cdns_xspi_probe()
547 return -ENOMEM; in cdns_xspi_probe()
549 host->mode_bits = SPI_3WIRE | SPI_TX_DUAL | SPI_TX_QUAD | in cdns_xspi_probe()
553 host->mem_ops = &cadence_xspi_mem_ops; in cdns_xspi_probe()
554 host->dev.of_node = pdev->dev.of_node; in cdns_xspi_probe()
555 host->bus_num = -1; in cdns_xspi_probe()
560 cdns_xspi->pdev = pdev; in cdns_xspi_probe()
561 cdns_xspi->dev = &pdev->dev; in cdns_xspi_probe()
562 cdns_xspi->cur_cs = 0; in cdns_xspi_probe()
564 init_completion(&cdns_xspi->cmd_complete); in cdns_xspi_probe()
565 init_completion(&cdns_xspi->auto_cmd_complete); in cdns_xspi_probe()
566 init_completion(&cdns_xspi->sdma_complete); in cdns_xspi_probe()
570 return -ENODEV; in cdns_xspi_probe()
572 cdns_xspi->iobase = devm_platform_ioremap_resource_byname(pdev, "io"); in cdns_xspi_probe()
573 if (IS_ERR(cdns_xspi->iobase)) { in cdns_xspi_probe()
575 return PTR_ERR(cdns_xspi->iobase); in cdns_xspi_probe()
579 cdns_xspi->sdmabase = devm_ioremap_resource(dev, res); in cdns_xspi_probe()
580 if (IS_ERR(cdns_xspi->sdmabase)) in cdns_xspi_probe()
581 return PTR_ERR(cdns_xspi->sdmabase); in cdns_xspi_probe()
582 cdns_xspi->sdmasize = resource_size(res); in cdns_xspi_probe()
584 cdns_xspi->auxbase = devm_platform_ioremap_resource_byname(pdev, "aux"); in cdns_xspi_probe()
585 if (IS_ERR(cdns_xspi->auxbase)) { in cdns_xspi_probe()
587 return PTR_ERR(cdns_xspi->auxbase); in cdns_xspi_probe()
590 cdns_xspi->irq = platform_get_irq(pdev, 0); in cdns_xspi_probe()
591 if (cdns_xspi->irq < 0) in cdns_xspi_probe()
592 return -ENXIO; in cdns_xspi_probe()
594 ret = devm_request_irq(dev, cdns_xspi->irq, cdns_xspi_irq_handler, in cdns_xspi_probe()
595 IRQF_SHARED, pdev->name, cdns_xspi); in cdns_xspi_probe()
597 dev_err(dev, "Failed to request IRQ: %d\n", cdns_xspi->irq); in cdns_xspi_probe()
609 host->num_chipselect = 1 << cdns_xspi->hw_num_banks; in cdns_xspi_probe()
624 .compatible = "cdns,xspi-nor",
641 MODULE_DESCRIPTION("Cadence XSPI Controller Driver");
644 MODULE_AUTHOR("Konrad Kociolek <konrad@cadence.com>");
645 MODULE_AUTHOR("Jayshri Pawar <jpawar@cadence.com>");
646 MODULE_AUTHOR("Parshuram Thombare <pthombar@cadence.com>");