Lines Matching full:as
308 * This message can be anything as it should not be treated by any SPI device.
320 static bool atmel_spi_is_v2(struct atmel_spi *as) in atmel_spi_is_v2() argument
322 return as->caps.is_spi2; in atmel_spi_is_v2()
331 static void atmel_spi_send_dummy(struct atmel_spi *as, struct spi_device *spi, int chip_select) in atmel_spi_send_dummy() argument
341 csr = spi_readl(as, CSR0 + 4 * chip_select); in atmel_spi_send_dummy()
343 spi_writel(as, CSR0 + 4 * chip_select, csr); in atmel_spi_send_dummy()
349 spi_readl(as, RDR); in atmel_spi_send_dummy()
350 while (spi_readl(as, SR) & SPI_BIT(RDRF)) { in atmel_spi_send_dummy()
351 spi_readl(as, RDR); in atmel_spi_send_dummy()
355 spi_writel(as, TDR, DUMMY_MSG); in atmel_spi_send_dummy()
357 readl_poll_timeout_atomic(as->regs + SPI_SR, status, in atmel_spi_send_dummy()
366 * transmitted") Not so! Workaround uses nCSx pins as GPIOs; or newer
369 * Even controller newer than ar91rm9200, using GPIOs can make sens as
381 * using a GPIO as Chip Select: the clock level is applied only when the first
385 static void cs_activate(struct atmel_spi *as, struct spi_device *spi) in cs_activate() argument
393 chip_select = as->native_cs_for_gpio; in cs_activate()
397 if (atmel_spi_is_v2(as)) { in cs_activate()
398 spi_writel(as, CSR0 + 4 * chip_select, asd->csr); in cs_activate()
400 * on CS1,2,3 needs SPI_CSR0.BITS config as SPI_CSR1,2,3.BITS in cs_activate()
402 spi_writel(as, CSR0, asd->csr); in cs_activate()
403 if (as->caps.has_wdrbt) { in cs_activate()
404 spi_writel(as, MR, in cs_activate()
410 spi_writel(as, MR, in cs_activate()
416 mr = spi_readl(as, MR); in cs_activate()
425 if (new_polarity != as->last_polarity) { in cs_activate()
431 atmel_spi_send_dummy(as, spi, chip_select); in cs_activate()
432 as->last_polarity = new_polarity; in cs_activate()
443 csr = spi_readl(as, CSR0 + 4 * i); in cs_activate()
445 spi_writel(as, CSR0 + 4 * i, in cs_activate()
449 mr = spi_readl(as, MR); in cs_activate()
451 spi_writel(as, MR, mr); in cs_activate()
457 static void cs_deactivate(struct atmel_spi *as, struct spi_device *spi) in cs_deactivate() argument
463 chip_select = as->native_cs_for_gpio; in cs_deactivate()
470 mr = spi_readl(as, MR); in cs_deactivate()
473 spi_writel(as, MR, mr); in cs_deactivate()
479 spi_writel(as, CR, SPI_BIT(LASTXFER)); in cs_deactivate()
482 static void atmel_spi_lock(struct atmel_spi *as) __acquires(&as->lock) in atmel_spi_lock() argument
484 spin_lock_irqsave(&as->lock, as->flags); in atmel_spi_lock()
487 static void atmel_spi_unlock(struct atmel_spi *as) __releases(&as->lock) in atmel_spi_unlock() argument
489 spin_unlock_irqrestore(&as->lock, as->flags); in atmel_spi_unlock()
497 static inline bool atmel_spi_use_dma(struct atmel_spi *as, in atmel_spi_use_dma() argument
500 return as->use_dma && xfer->len >= DMA_MIN_BYTES; in atmel_spi_use_dma()
507 struct atmel_spi *as = spi_controller_get_devdata(host); in atmel_spi_can_dma() local
510 return atmel_spi_use_dma(as, xfer) && in atmel_spi_can_dma()
513 return atmel_spi_use_dma(as, xfer); in atmel_spi_can_dma()
517 static int atmel_spi_dma_slave_config(struct atmel_spi *as, u8 bits_per_word) in atmel_spi_dma_slave_config() argument
519 struct spi_controller *host = platform_get_drvdata(as->pdev); in atmel_spi_dma_slave_config()
531 slave_config.dst_addr = (dma_addr_t)as->phybase + SPI_TDR; in atmel_spi_dma_slave_config()
532 slave_config.src_addr = (dma_addr_t)as->phybase + SPI_RDR; in atmel_spi_dma_slave_config()
552 dev_err(&as->pdev->dev, in atmel_spi_dma_slave_config()
566 dev_err(&as->pdev->dev, in atmel_spi_dma_slave_config()
575 struct atmel_spi *as) in atmel_spi_configure_dma() argument
577 struct device *dev = &as->pdev->dev; in atmel_spi_configure_dma()
598 err = atmel_spi_dma_slave_config(as, 8); in atmel_spi_configure_dma()
602 dev_info(&as->pdev->dev, in atmel_spi_configure_dma()
642 struct atmel_spi *as = spi_controller_get_devdata(host); in dma_callback() local
644 if (is_vmalloc_addr(as->current_transfer->rx_buf) && in dma_callback()
646 memcpy(as->current_transfer->rx_buf, as->addr_rx_bbuf, in dma_callback()
647 as->current_transfer->len); in dma_callback()
649 complete(&as->xfer_completion); in dma_callback()
658 struct atmel_spi *as = spi_controller_get_devdata(host); in atmel_spi_next_xfer_single() local
659 unsigned long xfer_pos = xfer->len - as->current_remaining_bytes; in atmel_spi_next_xfer_single()
664 spi_readl(as, RDR); in atmel_spi_next_xfer_single()
665 while (spi_readl(as, SR) & SPI_BIT(RDRF)) { in atmel_spi_next_xfer_single()
666 spi_readl(as, RDR); in atmel_spi_next_xfer_single()
671 spi_writel(as, TDR, *(u16 *)(xfer->tx_buf + xfer_pos)); in atmel_spi_next_xfer_single()
673 spi_writel(as, TDR, *(u8 *)(xfer->tx_buf + xfer_pos)); in atmel_spi_next_xfer_single()
681 spi_writel(as, IER, SPI_BIT(RDRF) | SPI_BIT(OVRES)); in atmel_spi_next_xfer_single()
690 struct atmel_spi *as = spi_controller_get_devdata(host); in atmel_spi_next_xfer_fifo() local
692 u32 offset = xfer->len - as->current_remaining_bytes; in atmel_spi_next_xfer_fifo()
702 ((u32)as->current_remaining_bytes >> 1) : in atmel_spi_next_xfer_fifo()
703 (u32)as->current_remaining_bytes); in atmel_spi_next_xfer_fifo()
704 num_data = min(current_remaining_data, as->fifo_size); in atmel_spi_next_xfer_fifo()
707 spi_writel(as, CR, SPI_BIT(RXFCLR) | SPI_BIT(TXFCLR)); in atmel_spi_next_xfer_fifo()
708 while (spi_readl(as, FLR)) in atmel_spi_next_xfer_fifo()
712 fifomr = spi_readl(as, FMR); in atmel_spi_next_xfer_fifo()
713 spi_writel(as, FMR, SPI_BFINS(RXFTHRES, num_data, fifomr)); in atmel_spi_next_xfer_fifo()
716 (void)spi_readl(as, SR); in atmel_spi_next_xfer_fifo()
728 spi_writel(as, TDR, (td1 << 16) | td0); in atmel_spi_next_xfer_fifo()
738 spi_writew(as, TDR, td0); in atmel_spi_next_xfer_fifo()
751 spi_writel(as, IER, SPI_BIT(RXFTHF) | SPI_BIT(OVRES)); in atmel_spi_next_xfer_fifo()
760 struct atmel_spi *as = spi_controller_get_devdata(host); in atmel_spi_next_xfer_pio() local
762 if (as->fifo_size) in atmel_spi_next_xfer_pio()
775 struct atmel_spi *as = spi_controller_get_devdata(host); in atmel_spi_next_xfer_dma_submit() local
791 if (atmel_spi_dma_slave_config(as, xfer->bits_per_word)) in atmel_spi_next_xfer_dma_submit()
798 as->dma_addr_rx_bbuf, in atmel_spi_next_xfer_dma_submit()
816 memcpy(as->addr_tx_bbuf, xfer->tx_buf, xfer->len); in atmel_spi_next_xfer_dma_submit()
818 as->dma_addr_tx_bbuf, in atmel_spi_next_xfer_dma_submit()
839 spi_writel(as, IER, SPI_BIT(OVRES)); in atmel_spi_next_xfer_dma_submit()
858 spi_writel(as, IDR, SPI_BIT(OVRES)); in atmel_spi_next_xfer_dma_submit()
876 static int atmel_spi_set_xfer_speed(struct atmel_spi *as, in atmel_spi_set_xfer_speed() argument
885 chip_select = as->native_cs_for_gpio; in atmel_spi_set_xfer_speed()
890 bus_hz = as->spi_clk; in atmel_spi_set_xfer_speed()
891 if (!atmel_spi_is_v2(as)) in atmel_spi_set_xfer_speed()
916 csr = spi_readl(as, CSR0 + 4 * chip_select); in atmel_spi_set_xfer_speed()
918 spi_writel(as, CSR0 + 4 * chip_select, csr); in atmel_spi_set_xfer_speed()
931 struct atmel_spi *as = spi_controller_get_devdata(host); in atmel_spi_pdc_next_xfer() local
935 spi_writel(as, PTCR, SPI_BIT(RXTDIS) | SPI_BIT(TXTDIS)); in atmel_spi_pdc_next_xfer()
937 len = as->current_remaining_bytes; in atmel_spi_pdc_next_xfer()
939 as->current_remaining_bytes -= len; in atmel_spi_pdc_next_xfer()
941 spi_writel(as, RPR, rx_dma); in atmel_spi_pdc_next_xfer()
942 spi_writel(as, TPR, tx_dma); in atmel_spi_pdc_next_xfer()
946 spi_writel(as, RCR, len); in atmel_spi_pdc_next_xfer()
947 spi_writel(as, TCR, len); in atmel_spi_pdc_next_xfer()
955 if (as->current_remaining_bytes) { in atmel_spi_pdc_next_xfer()
956 len = as->current_remaining_bytes; in atmel_spi_pdc_next_xfer()
958 as->current_remaining_bytes -= len; in atmel_spi_pdc_next_xfer()
960 spi_writel(as, RNPR, rx_dma); in atmel_spi_pdc_next_xfer()
961 spi_writel(as, TNPR, tx_dma); in atmel_spi_pdc_next_xfer()
965 spi_writel(as, RNCR, len); in atmel_spi_pdc_next_xfer()
966 spi_writel(as, TNCR, len); in atmel_spi_pdc_next_xfer()
985 spi_writel(as, IER, SPI_BIT(RXBUFF) | SPI_BIT(OVRES)); in atmel_spi_pdc_next_xfer()
986 spi_writel(as, PTCR, SPI_BIT(TXTEN) | SPI_BIT(RXTEN)); in atmel_spi_pdc_next_xfer()
990 * For DMA, tx_buf/tx_dma have the same relationship as rx_buf/rx_dma:
997 atmel_spi_dma_map_xfer(struct atmel_spi *as, struct spi_transfer *xfer) in atmel_spi_dma_map_xfer() argument
999 struct device *dev = &as->pdev->dev; in atmel_spi_dma_map_xfer()
1039 static void atmel_spi_disable_pdc_transfer(struct atmel_spi *as) in atmel_spi_disable_pdc_transfer() argument
1041 spi_writel(as, PTCR, SPI_BIT(RXTDIS) | SPI_BIT(TXTDIS)); in atmel_spi_disable_pdc_transfer()
1045 atmel_spi_pump_single_data(struct atmel_spi *as, struct spi_transfer *xfer) in atmel_spi_pump_single_data() argument
1049 unsigned long xfer_pos = xfer->len - as->current_remaining_bytes; in atmel_spi_pump_single_data()
1053 *rxp16 = spi_readl(as, RDR); in atmel_spi_pump_single_data()
1056 *rxp = spi_readl(as, RDR); in atmel_spi_pump_single_data()
1059 if (as->current_remaining_bytes > 2) in atmel_spi_pump_single_data()
1060 as->current_remaining_bytes -= 2; in atmel_spi_pump_single_data()
1062 as->current_remaining_bytes = 0; in atmel_spi_pump_single_data()
1064 as->current_remaining_bytes--; in atmel_spi_pump_single_data()
1069 atmel_spi_pump_fifo_data(struct atmel_spi *as, struct spi_transfer *xfer) in atmel_spi_pump_fifo_data() argument
1071 u32 fifolr = spi_readl(as, FLR); in atmel_spi_pump_fifo_data()
1073 u32 offset = xfer->len - as->current_remaining_bytes; in atmel_spi_pump_fifo_data()
1083 if (as->current_remaining_bytes > num_bytes) in atmel_spi_pump_fifo_data()
1084 as->current_remaining_bytes -= num_bytes; in atmel_spi_pump_fifo_data()
1086 as->current_remaining_bytes = 0; in atmel_spi_pump_fifo_data()
1090 as->current_remaining_bytes &= ~0x1; in atmel_spi_pump_fifo_data()
1094 rd = spi_readl(as, RDR); in atmel_spi_pump_fifo_data()
1109 atmel_spi_pump_pio_data(struct atmel_spi *as, struct spi_transfer *xfer) in atmel_spi_pump_pio_data() argument
1111 if (as->fifo_size) in atmel_spi_pump_pio_data()
1112 atmel_spi_pump_fifo_data(as, xfer); in atmel_spi_pump_pio_data()
1114 atmel_spi_pump_single_data(as, xfer); in atmel_spi_pump_pio_data()
1124 struct atmel_spi *as = spi_controller_get_devdata(host); in atmel_spi_pio_interrupt() local
1129 imr = spi_readl(as, IMR); in atmel_spi_pio_interrupt()
1130 status = spi_readl(as, SR); in atmel_spi_pio_interrupt()
1135 spi_writel(as, IDR, SPI_BIT(OVRES)); in atmel_spi_pio_interrupt()
1147 as->done_status = -EIO; in atmel_spi_pio_interrupt()
1151 spi_readl(as, SR); in atmel_spi_pio_interrupt()
1153 complete(&as->xfer_completion); in atmel_spi_pio_interrupt()
1156 atmel_spi_lock(as); in atmel_spi_pio_interrupt()
1158 if (as->current_remaining_bytes) { in atmel_spi_pio_interrupt()
1160 xfer = as->current_transfer; in atmel_spi_pio_interrupt()
1161 atmel_spi_pump_pio_data(as, xfer); in atmel_spi_pio_interrupt()
1162 if (!as->current_remaining_bytes) in atmel_spi_pio_interrupt()
1163 spi_writel(as, IDR, pending); in atmel_spi_pio_interrupt()
1165 complete(&as->xfer_completion); in atmel_spi_pio_interrupt()
1168 atmel_spi_unlock(as); in atmel_spi_pio_interrupt()
1172 spi_writel(as, IDR, pending); in atmel_spi_pio_interrupt()
1182 struct atmel_spi *as = spi_controller_get_devdata(host); in atmel_spi_pdc_interrupt() local
1186 imr = spi_readl(as, IMR); in atmel_spi_pdc_interrupt()
1187 status = spi_readl(as, SR); in atmel_spi_pdc_interrupt()
1194 spi_writel(as, IDR, (SPI_BIT(RXBUFF) | SPI_BIT(ENDRX) in atmel_spi_pdc_interrupt()
1198 spi_readl(as, SR); in atmel_spi_pdc_interrupt()
1200 as->done_status = -EIO; in atmel_spi_pdc_interrupt()
1202 complete(&as->xfer_completion); in atmel_spi_pdc_interrupt()
1207 spi_writel(as, IDR, pending); in atmel_spi_pdc_interrupt()
1209 complete(&as->xfer_completion); in atmel_spi_pdc_interrupt()
1215 static int atmel_word_delay_csr(struct spi_device *spi, struct atmel_spi *as) in atmel_word_delay_csr() argument
1230 return (as->spi_clk / 1000000 * value) >> 5; in atmel_word_delay_csr()
1233 static void initialize_native_cs_for_gpio(struct atmel_spi *as) in initialize_native_cs_for_gpio() argument
1236 struct spi_controller *host = platform_get_drvdata(as->pdev); in initialize_native_cs_for_gpio()
1238 if (!as->native_cs_free) in initialize_native_cs_for_gpio()
1248 if (atmel_spi_is_v2(as)) in initialize_native_cs_for_gpio()
1255 as->native_cs_free |= BIT(i); in initialize_native_cs_for_gpio()
1257 if (as->native_cs_free) in initialize_native_cs_for_gpio()
1258 as->native_cs_for_gpio = ffs(as->native_cs_free); in initialize_native_cs_for_gpio()
1263 struct atmel_spi *as; in atmel_spi_setup() local
1270 as = spi_controller_get_devdata(spi->controller); in atmel_spi_setup()
1283 initialize_native_cs_for_gpio(as); in atmel_spi_setup()
1285 if (spi_get_csgpiod(spi, 0) && as->native_cs_free) { in atmel_spi_setup()
1292 chip_select = as->native_cs_for_gpio; in atmel_spi_setup()
1306 word_delay_csr = atmel_word_delay_csr(spi, as); in atmel_spi_setup()
1330 if (!atmel_spi_is_v2(as)) in atmel_spi_setup()
1331 spi_writel(as, CSR0 + 4 * chip_select, csr); in atmel_spi_setup()
1338 struct atmel_spi *as = spi_controller_get_devdata(spi->controller); in atmel_spi_set_cs() local
1346 cs_activate(as, spi); in atmel_spi_set_cs()
1348 cs_deactivate(as, spi); in atmel_spi_set_cs()
1357 struct atmel_spi *as; in atmel_spi_one_transfer() local
1366 as = spi_controller_get_devdata(host); in atmel_spi_one_transfer()
1381 && as->use_pdc) { in atmel_spi_one_transfer()
1382 if (atmel_spi_dma_map_xfer(as, xfer) < 0) in atmel_spi_one_transfer()
1386 atmel_spi_set_xfer_speed(as, spi, xfer); in atmel_spi_one_transfer()
1388 as->done_status = 0; in atmel_spi_one_transfer()
1389 as->current_transfer = xfer; in atmel_spi_one_transfer()
1390 as->current_remaining_bytes = xfer->len; in atmel_spi_one_transfer()
1391 while (as->current_remaining_bytes) { in atmel_spi_one_transfer()
1392 reinit_completion(&as->xfer_completion); in atmel_spi_one_transfer()
1394 if (as->use_pdc) { in atmel_spi_one_transfer()
1395 atmel_spi_lock(as); in atmel_spi_one_transfer()
1397 atmel_spi_unlock(as); in atmel_spi_one_transfer()
1398 } else if (atmel_spi_use_dma(as, xfer)) { in atmel_spi_one_transfer()
1399 len = as->current_remaining_bytes; in atmel_spi_one_transfer()
1405 as->done_status = ret; in atmel_spi_one_transfer()
1408 as->current_remaining_bytes -= len; in atmel_spi_one_transfer()
1409 if (as->current_remaining_bytes < 0) in atmel_spi_one_transfer()
1410 as->current_remaining_bytes = 0; in atmel_spi_one_transfer()
1413 atmel_spi_lock(as); in atmel_spi_one_transfer()
1415 atmel_spi_unlock(as); in atmel_spi_one_transfer()
1419 ret_timeout = wait_for_completion_timeout(&as->xfer_completion, dma_timeout); in atmel_spi_one_transfer()
1422 as->done_status = -EIO; in atmel_spi_one_transfer()
1425 if (as->done_status) in atmel_spi_one_transfer()
1429 if (as->done_status) { in atmel_spi_one_transfer()
1430 if (as->use_pdc) { in atmel_spi_one_transfer()
1433 spi_readl(as, TCR), spi_readl(as, RCR)); in atmel_spi_one_transfer()
1439 spi_writel(as, RNCR, 0); in atmel_spi_one_transfer()
1440 spi_writel(as, TNCR, 0); in atmel_spi_one_transfer()
1441 spi_writel(as, RCR, 0); in atmel_spi_one_transfer()
1442 spi_writel(as, TCR, 0); in atmel_spi_one_transfer()
1444 if (spi_readl(as, SR) & SPI_BIT(TXEMPTY)) in atmel_spi_one_transfer()
1449 while (spi_readl(as, SR) & SPI_BIT(RDRF)) in atmel_spi_one_transfer()
1450 spi_readl(as, RDR); in atmel_spi_one_transfer()
1453 spi_readl(as, SR); in atmel_spi_one_transfer()
1455 } else if (atmel_spi_use_dma(as, xfer)) { in atmel_spi_one_transfer()
1461 && as->use_pdc) in atmel_spi_one_transfer()
1464 if (as->use_pdc) in atmel_spi_one_transfer()
1465 atmel_spi_disable_pdc_transfer(as); in atmel_spi_one_transfer()
1467 return as->done_status; in atmel_spi_one_transfer()
1481 static inline unsigned int atmel_get_version(struct atmel_spi *as) in atmel_get_version() argument
1483 return spi_readl(as, VERSION) & 0x00000fff; in atmel_get_version()
1486 static void atmel_get_caps(struct atmel_spi *as) in atmel_get_caps() argument
1490 version = atmel_get_version(as); in atmel_get_caps()
1492 as->caps.is_spi2 = version > 0x121; in atmel_get_caps()
1493 as->caps.has_wdrbt = version >= 0x210; in atmel_get_caps()
1494 as->caps.has_dma_support = version >= 0x212; in atmel_get_caps()
1495 as->caps.has_pdc_support = version < 0x212; in atmel_get_caps()
1498 static void atmel_spi_init(struct atmel_spi *as) in atmel_spi_init() argument
1500 spi_writel(as, CR, SPI_BIT(SWRST)); in atmel_spi_init()
1501 spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */ in atmel_spi_init()
1504 if (as->fifo_size) in atmel_spi_init()
1505 spi_writel(as, CR, SPI_BIT(FIFOEN)); in atmel_spi_init()
1507 if (as->caps.has_wdrbt) { in atmel_spi_init()
1508 spi_writel(as, MR, SPI_BIT(WDRBT) | SPI_BIT(MODFDIS) in atmel_spi_init()
1511 spi_writel(as, MR, SPI_BIT(MSTR) | SPI_BIT(MODFDIS)); in atmel_spi_init()
1514 if (as->use_pdc) in atmel_spi_init()
1515 spi_writel(as, PTCR, SPI_BIT(RXTDIS) | SPI_BIT(TXTDIS)); in atmel_spi_init()
1516 spi_writel(as, CR, SPI_BIT(SPIEN)); in atmel_spi_init()
1526 struct atmel_spi *as; in atmel_spi_probe() local
1540 host = spi_alloc_host(&pdev->dev, sizeof(*as)); in atmel_spi_probe()
1562 as = spi_controller_get_devdata(host); in atmel_spi_probe()
1564 spin_lock_init(&as->lock); in atmel_spi_probe()
1566 as->pdev = pdev; in atmel_spi_probe()
1567 as->regs = devm_platform_get_and_ioremap_resource(pdev, 0, ®s); in atmel_spi_probe()
1568 if (IS_ERR(as->regs)) { in atmel_spi_probe()
1569 ret = PTR_ERR(as->regs); in atmel_spi_probe()
1572 as->phybase = regs->start; in atmel_spi_probe()
1573 as->irq = irq; in atmel_spi_probe()
1574 as->clk = clk; in atmel_spi_probe()
1576 init_completion(&as->xfer_completion); in atmel_spi_probe()
1578 atmel_get_caps(as); in atmel_spi_probe()
1580 as->use_dma = false; in atmel_spi_probe()
1581 as->use_pdc = false; in atmel_spi_probe()
1582 if (as->caps.has_dma_support) { in atmel_spi_probe()
1583 ret = atmel_spi_configure_dma(host, as); in atmel_spi_probe()
1585 as->use_dma = true; in atmel_spi_probe()
1589 } else if (as->caps.has_pdc_support) { in atmel_spi_probe()
1590 as->use_pdc = true; in atmel_spi_probe()
1594 as->addr_rx_bbuf = dma_alloc_coherent(&pdev->dev, in atmel_spi_probe()
1596 &as->dma_addr_rx_bbuf, in atmel_spi_probe()
1598 if (!as->addr_rx_bbuf) { in atmel_spi_probe()
1599 as->use_dma = false; in atmel_spi_probe()
1601 as->addr_tx_bbuf = dma_alloc_coherent(&pdev->dev, in atmel_spi_probe()
1603 &as->dma_addr_tx_bbuf, in atmel_spi_probe()
1605 if (!as->addr_tx_bbuf) { in atmel_spi_probe()
1606 as->use_dma = false; in atmel_spi_probe()
1608 as->addr_rx_bbuf, in atmel_spi_probe()
1609 as->dma_addr_rx_bbuf); in atmel_spi_probe()
1612 if (!as->use_dma) in atmel_spi_probe()
1617 if (as->caps.has_dma_support && !as->use_dma) in atmel_spi_probe()
1620 if (as->use_pdc) { in atmel_spi_probe()
1635 as->spi_clk = clk_get_rate(clk); in atmel_spi_probe()
1637 as->fifo_size = 0; in atmel_spi_probe()
1639 &as->fifo_size)) { in atmel_spi_probe()
1640 dev_info(&pdev->dev, "Using FIFO (%u data)\n", as->fifo_size); in atmel_spi_probe()
1643 atmel_spi_init(as); in atmel_spi_probe()
1656 atmel_get_version(as), (unsigned long)regs->start, in atmel_spi_probe()
1665 if (as->use_dma) in atmel_spi_probe()
1668 spi_writel(as, CR, SPI_BIT(SWRST)); in atmel_spi_probe()
1669 spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */ in atmel_spi_probe()
1680 struct atmel_spi *as = spi_controller_get_devdata(host); in atmel_spi_remove() local
1685 if (as->use_dma) { in atmel_spi_remove()
1690 as->addr_tx_bbuf, in atmel_spi_remove()
1691 as->dma_addr_tx_bbuf); in atmel_spi_remove()
1693 as->addr_rx_bbuf, in atmel_spi_remove()
1694 as->dma_addr_rx_bbuf); in atmel_spi_remove()
1698 spin_lock_irq(&as->lock); in atmel_spi_remove()
1699 spi_writel(as, CR, SPI_BIT(SWRST)); in atmel_spi_remove()
1700 spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */ in atmel_spi_remove()
1701 spi_readl(as, SR); in atmel_spi_remove()
1702 spin_unlock_irq(&as->lock); in atmel_spi_remove()
1704 clk_disable_unprepare(as->clk); in atmel_spi_remove()
1713 struct atmel_spi *as = spi_controller_get_devdata(host); in atmel_spi_runtime_suspend() local
1715 clk_disable_unprepare(as->clk); in atmel_spi_runtime_suspend()
1724 struct atmel_spi *as = spi_controller_get_devdata(host); in atmel_spi_runtime_resume() local
1728 return clk_prepare_enable(as->clk); in atmel_spi_runtime_resume()
1750 struct atmel_spi *as = spi_controller_get_devdata(host); in atmel_spi_resume() local
1753 ret = clk_prepare_enable(as->clk); in atmel_spi_resume()
1757 atmel_spi_init(as); in atmel_spi_resume()
1759 clk_disable_unprepare(as->clk); in atmel_spi_resume()