Lines Matching full:as
301 static bool atmel_spi_is_v2(struct atmel_spi *as) in atmel_spi_is_v2() argument
303 return as->caps.is_spi2; in atmel_spi_is_v2()
310 * transmitted") Not so! Workaround uses nCSx pins as GPIOs; or newer
313 * Even controller newer than ar91rm9200, using GPIOs can make sens as
324 static void cs_activate(struct atmel_spi *as, struct spi_device *spi) in cs_activate() argument
331 chip_select = as->native_cs_for_gpio; in cs_activate()
335 if (atmel_spi_is_v2(as)) { in cs_activate()
336 spi_writel(as, CSR0 + 4 * chip_select, asd->csr); in cs_activate()
338 * on CS1,2,3 needs SPI_CSR0.BITS config as SPI_CSR1,2,3.BITS in cs_activate()
340 spi_writel(as, CSR0, asd->csr); in cs_activate()
341 if (as->caps.has_wdrbt) { in cs_activate()
342 spi_writel(as, MR, in cs_activate()
348 spi_writel(as, MR, in cs_activate()
354 mr = spi_readl(as, MR); in cs_activate()
362 csr = spi_readl(as, CSR0 + 4 * i); in cs_activate()
364 spi_writel(as, CSR0 + 4 * i, in cs_activate()
368 mr = spi_readl(as, MR); in cs_activate()
370 spi_writel(as, MR, mr); in cs_activate()
376 static void cs_deactivate(struct atmel_spi *as, struct spi_device *spi) in cs_deactivate() argument
382 chip_select = as->native_cs_for_gpio; in cs_deactivate()
389 mr = spi_readl(as, MR); in cs_deactivate()
392 spi_writel(as, MR, mr); in cs_deactivate()
398 spi_writel(as, CR, SPI_BIT(LASTXFER)); in cs_deactivate()
401 static void atmel_spi_lock(struct atmel_spi *as) __acquires(&as->lock) in atmel_spi_lock() argument
403 spin_lock_irqsave(&as->lock, as->flags); in atmel_spi_lock()
406 static void atmel_spi_unlock(struct atmel_spi *as) __releases(&as->lock) in atmel_spi_unlock() argument
408 spin_unlock_irqrestore(&as->lock, as->flags); in atmel_spi_unlock()
416 static inline bool atmel_spi_use_dma(struct atmel_spi *as, in atmel_spi_use_dma() argument
419 return as->use_dma && xfer->len >= DMA_MIN_BYTES; in atmel_spi_use_dma()
426 struct atmel_spi *as = spi_master_get_devdata(master); in atmel_spi_can_dma() local
429 return atmel_spi_use_dma(as, xfer) && in atmel_spi_can_dma()
432 return atmel_spi_use_dma(as, xfer); in atmel_spi_can_dma()
436 static int atmel_spi_dma_slave_config(struct atmel_spi *as, in atmel_spi_dma_slave_config() argument
440 struct spi_master *master = platform_get_drvdata(as->pdev); in atmel_spi_dma_slave_config()
451 slave_config->dst_addr = (dma_addr_t)as->phybase + SPI_TDR; in atmel_spi_dma_slave_config()
452 slave_config->src_addr = (dma_addr_t)as->phybase + SPI_RDR; in atmel_spi_dma_slave_config()
473 dev_err(&as->pdev->dev, in atmel_spi_dma_slave_config()
488 dev_err(&as->pdev->dev, in atmel_spi_dma_slave_config()
497 struct atmel_spi *as) in atmel_spi_configure_dma() argument
500 struct device *dev = &as->pdev->dev; in atmel_spi_configure_dma()
525 err = atmel_spi_dma_slave_config(as, &slave_config, 8); in atmel_spi_configure_dma()
529 dev_info(&as->pdev->dev, in atmel_spi_configure_dma()
569 struct atmel_spi *as = spi_master_get_devdata(master); in dma_callback() local
571 if (is_vmalloc_addr(as->current_transfer->rx_buf) && in dma_callback()
573 memcpy(as->current_transfer->rx_buf, as->addr_rx_bbuf, in dma_callback()
574 as->current_transfer->len); in dma_callback()
576 complete(&as->xfer_completion); in dma_callback()
585 struct atmel_spi *as = spi_master_get_devdata(master); in atmel_spi_next_xfer_single() local
586 unsigned long xfer_pos = xfer->len - as->current_remaining_bytes; in atmel_spi_next_xfer_single()
591 spi_readl(as, RDR); in atmel_spi_next_xfer_single()
592 while (spi_readl(as, SR) & SPI_BIT(RDRF)) { in atmel_spi_next_xfer_single()
593 spi_readl(as, RDR); in atmel_spi_next_xfer_single()
598 spi_writel(as, TDR, *(u16 *)(xfer->tx_buf + xfer_pos)); in atmel_spi_next_xfer_single()
600 spi_writel(as, TDR, *(u8 *)(xfer->tx_buf + xfer_pos)); in atmel_spi_next_xfer_single()
608 spi_writel(as, IER, SPI_BIT(RDRF) | SPI_BIT(OVRES)); in atmel_spi_next_xfer_single()
617 struct atmel_spi *as = spi_master_get_devdata(master); in atmel_spi_next_xfer_fifo() local
619 u32 offset = xfer->len - as->current_remaining_bytes; in atmel_spi_next_xfer_fifo()
629 ((u32)as->current_remaining_bytes >> 1) : in atmel_spi_next_xfer_fifo()
630 (u32)as->current_remaining_bytes); in atmel_spi_next_xfer_fifo()
631 num_data = min(current_remaining_data, as->fifo_size); in atmel_spi_next_xfer_fifo()
634 spi_writel(as, CR, SPI_BIT(RXFCLR) | SPI_BIT(TXFCLR)); in atmel_spi_next_xfer_fifo()
635 while (spi_readl(as, FLR)) in atmel_spi_next_xfer_fifo()
639 fifomr = spi_readl(as, FMR); in atmel_spi_next_xfer_fifo()
640 spi_writel(as, FMR, SPI_BFINS(RXFTHRES, num_data, fifomr)); in atmel_spi_next_xfer_fifo()
643 (void)spi_readl(as, SR); in atmel_spi_next_xfer_fifo()
655 spi_writel(as, TDR, (td1 << 16) | td0); in atmel_spi_next_xfer_fifo()
665 spi_writew(as, TDR, td0); in atmel_spi_next_xfer_fifo()
678 spi_writel(as, IER, SPI_BIT(RXFTHF) | SPI_BIT(OVRES)); in atmel_spi_next_xfer_fifo()
687 struct atmel_spi *as = spi_master_get_devdata(master); in atmel_spi_next_xfer_pio() local
689 if (as->fifo_size) in atmel_spi_next_xfer_pio()
701 __must_hold(&as->lock) in atmel_spi_next_xfer_dma_submit()
703 struct atmel_spi *as = spi_master_get_devdata(master); in atmel_spi_next_xfer_dma_submit() local
718 atmel_spi_unlock(as); in atmel_spi_next_xfer_dma_submit()
722 if (atmel_spi_dma_slave_config(as, &slave_config, in atmel_spi_next_xfer_dma_submit()
730 as->dma_addr_rx_bbuf, in atmel_spi_next_xfer_dma_submit()
748 memcpy(as->addr_tx_bbuf, xfer->tx_buf, xfer->len); in atmel_spi_next_xfer_dma_submit()
750 as->dma_addr_tx_bbuf, in atmel_spi_next_xfer_dma_submit()
771 spi_writel(as, IER, SPI_BIT(OVRES)); in atmel_spi_next_xfer_dma_submit()
788 atmel_spi_lock(as); in atmel_spi_next_xfer_dma_submit()
792 spi_writel(as, IDR, SPI_BIT(OVRES)); in atmel_spi_next_xfer_dma_submit()
795 atmel_spi_lock(as); in atmel_spi_next_xfer_dma_submit()
811 static int atmel_spi_set_xfer_speed(struct atmel_spi *as, in atmel_spi_set_xfer_speed() argument
820 chip_select = as->native_cs_for_gpio; in atmel_spi_set_xfer_speed()
825 bus_hz = as->spi_clk; in atmel_spi_set_xfer_speed()
826 if (!atmel_spi_is_v2(as)) in atmel_spi_set_xfer_speed()
851 csr = spi_readl(as, CSR0 + 4 * chip_select); in atmel_spi_set_xfer_speed()
853 spi_writel(as, CSR0 + 4 * chip_select, csr); in atmel_spi_set_xfer_speed()
866 struct atmel_spi *as = spi_master_get_devdata(master); in atmel_spi_pdc_next_xfer() local
870 spi_writel(as, PTCR, SPI_BIT(RXTDIS) | SPI_BIT(TXTDIS)); in atmel_spi_pdc_next_xfer()
872 len = as->current_remaining_bytes; in atmel_spi_pdc_next_xfer()
874 as->current_remaining_bytes -= len; in atmel_spi_pdc_next_xfer()
876 spi_writel(as, RPR, rx_dma); in atmel_spi_pdc_next_xfer()
877 spi_writel(as, TPR, tx_dma); in atmel_spi_pdc_next_xfer()
881 spi_writel(as, RCR, len); in atmel_spi_pdc_next_xfer()
882 spi_writel(as, TCR, len); in atmel_spi_pdc_next_xfer()
890 if (as->current_remaining_bytes) { in atmel_spi_pdc_next_xfer()
891 len = as->current_remaining_bytes; in atmel_spi_pdc_next_xfer()
893 as->current_remaining_bytes -= len; in atmel_spi_pdc_next_xfer()
895 spi_writel(as, RNPR, rx_dma); in atmel_spi_pdc_next_xfer()
896 spi_writel(as, TNPR, tx_dma); in atmel_spi_pdc_next_xfer()
900 spi_writel(as, RNCR, len); in atmel_spi_pdc_next_xfer()
901 spi_writel(as, TNCR, len); in atmel_spi_pdc_next_xfer()
920 spi_writel(as, IER, SPI_BIT(RXBUFF) | SPI_BIT(OVRES)); in atmel_spi_pdc_next_xfer()
921 spi_writel(as, PTCR, SPI_BIT(TXTEN) | SPI_BIT(RXTEN)); in atmel_spi_pdc_next_xfer()
925 * For DMA, tx_buf/tx_dma have the same relationship as rx_buf/rx_dma:
932 atmel_spi_dma_map_xfer(struct atmel_spi *as, struct spi_transfer *xfer) in atmel_spi_dma_map_xfer() argument
934 struct device *dev = &as->pdev->dev; in atmel_spi_dma_map_xfer()
974 static void atmel_spi_disable_pdc_transfer(struct atmel_spi *as) in atmel_spi_disable_pdc_transfer() argument
976 spi_writel(as, PTCR, SPI_BIT(RXTDIS) | SPI_BIT(TXTDIS)); in atmel_spi_disable_pdc_transfer()
980 atmel_spi_pump_single_data(struct atmel_spi *as, struct spi_transfer *xfer) in atmel_spi_pump_single_data() argument
984 unsigned long xfer_pos = xfer->len - as->current_remaining_bytes; in atmel_spi_pump_single_data()
988 *rxp16 = spi_readl(as, RDR); in atmel_spi_pump_single_data()
991 *rxp = spi_readl(as, RDR); in atmel_spi_pump_single_data()
994 if (as->current_remaining_bytes > 2) in atmel_spi_pump_single_data()
995 as->current_remaining_bytes -= 2; in atmel_spi_pump_single_data()
997 as->current_remaining_bytes = 0; in atmel_spi_pump_single_data()
999 as->current_remaining_bytes--; in atmel_spi_pump_single_data()
1004 atmel_spi_pump_fifo_data(struct atmel_spi *as, struct spi_transfer *xfer) in atmel_spi_pump_fifo_data() argument
1006 u32 fifolr = spi_readl(as, FLR); in atmel_spi_pump_fifo_data()
1008 u32 offset = xfer->len - as->current_remaining_bytes; in atmel_spi_pump_fifo_data()
1018 if (as->current_remaining_bytes > num_bytes) in atmel_spi_pump_fifo_data()
1019 as->current_remaining_bytes -= num_bytes; in atmel_spi_pump_fifo_data()
1021 as->current_remaining_bytes = 0; in atmel_spi_pump_fifo_data()
1025 as->current_remaining_bytes &= ~0x1; in atmel_spi_pump_fifo_data()
1029 rd = spi_readl(as, RDR); in atmel_spi_pump_fifo_data()
1044 atmel_spi_pump_pio_data(struct atmel_spi *as, struct spi_transfer *xfer) in atmel_spi_pump_pio_data() argument
1046 if (as->fifo_size) in atmel_spi_pump_pio_data()
1047 atmel_spi_pump_fifo_data(as, xfer); in atmel_spi_pump_pio_data()
1049 atmel_spi_pump_single_data(as, xfer); in atmel_spi_pump_pio_data()
1061 struct atmel_spi *as = spi_master_get_devdata(master); in atmel_spi_pio_interrupt() local
1066 imr = spi_readl(as, IMR); in atmel_spi_pio_interrupt()
1067 status = spi_readl(as, SR); in atmel_spi_pio_interrupt()
1072 spi_writel(as, IDR, SPI_BIT(OVRES)); in atmel_spi_pio_interrupt()
1084 as->done_status = -EIO; in atmel_spi_pio_interrupt()
1088 spi_readl(as, SR); in atmel_spi_pio_interrupt()
1090 complete(&as->xfer_completion); in atmel_spi_pio_interrupt()
1093 atmel_spi_lock(as); in atmel_spi_pio_interrupt()
1095 if (as->current_remaining_bytes) { in atmel_spi_pio_interrupt()
1097 xfer = as->current_transfer; in atmel_spi_pio_interrupt()
1098 atmel_spi_pump_pio_data(as, xfer); in atmel_spi_pio_interrupt()
1099 if (!as->current_remaining_bytes) in atmel_spi_pio_interrupt()
1100 spi_writel(as, IDR, pending); in atmel_spi_pio_interrupt()
1102 complete(&as->xfer_completion); in atmel_spi_pio_interrupt()
1105 atmel_spi_unlock(as); in atmel_spi_pio_interrupt()
1109 spi_writel(as, IDR, pending); in atmel_spi_pio_interrupt()
1119 struct atmel_spi *as = spi_master_get_devdata(master); in atmel_spi_pdc_interrupt() local
1123 imr = spi_readl(as, IMR); in atmel_spi_pdc_interrupt()
1124 status = spi_readl(as, SR); in atmel_spi_pdc_interrupt()
1131 spi_writel(as, IDR, (SPI_BIT(RXBUFF) | SPI_BIT(ENDRX) in atmel_spi_pdc_interrupt()
1135 spi_readl(as, SR); in atmel_spi_pdc_interrupt()
1137 as->done_status = -EIO; in atmel_spi_pdc_interrupt()
1139 complete(&as->xfer_completion); in atmel_spi_pdc_interrupt()
1144 spi_writel(as, IDR, pending); in atmel_spi_pdc_interrupt()
1146 complete(&as->xfer_completion); in atmel_spi_pdc_interrupt()
1152 static int atmel_word_delay_csr(struct spi_device *spi, struct atmel_spi *as) in atmel_word_delay_csr() argument
1167 return (as->spi_clk / 1000000 * value) >> 5; in atmel_word_delay_csr()
1170 static void initialize_native_cs_for_gpio(struct atmel_spi *as) in initialize_native_cs_for_gpio() argument
1173 struct spi_master *master = platform_get_drvdata(as->pdev); in initialize_native_cs_for_gpio()
1175 if (!as->native_cs_free) in initialize_native_cs_for_gpio()
1185 if (atmel_spi_is_v2(as)) in initialize_native_cs_for_gpio()
1192 as->native_cs_free |= BIT(i); in initialize_native_cs_for_gpio()
1194 if (as->native_cs_free) in initialize_native_cs_for_gpio()
1195 as->native_cs_for_gpio = ffs(as->native_cs_free); in initialize_native_cs_for_gpio()
1200 struct atmel_spi *as; in atmel_spi_setup() local
1207 as = spi_master_get_devdata(spi->master); in atmel_spi_setup()
1220 initialize_native_cs_for_gpio(as); in atmel_spi_setup()
1222 if (spi->cs_gpiod && as->native_cs_free) { in atmel_spi_setup()
1229 chip_select = as->native_cs_for_gpio; in atmel_spi_setup()
1243 word_delay_csr = atmel_word_delay_csr(spi, as); in atmel_spi_setup()
1267 if (!atmel_spi_is_v2(as)) in atmel_spi_setup()
1268 spi_writel(as, CSR0 + 4 * chip_select, csr); in atmel_spi_setup()
1275 struct atmel_spi *as = spi_master_get_devdata(spi->master); in atmel_spi_set_cs() local
1283 cs_activate(as, spi); in atmel_spi_set_cs()
1285 cs_deactivate(as, spi); in atmel_spi_set_cs()
1294 struct atmel_spi *as; in atmel_spi_one_transfer() local
1302 as = spi_master_get_devdata(master); in atmel_spi_one_transfer()
1304 atmel_spi_lock(as); in atmel_spi_one_transfer()
1319 && as->use_pdc) { in atmel_spi_one_transfer()
1320 if (atmel_spi_dma_map_xfer(as, xfer) < 0) in atmel_spi_one_transfer()
1324 atmel_spi_set_xfer_speed(as, spi, xfer); in atmel_spi_one_transfer()
1326 as->done_status = 0; in atmel_spi_one_transfer()
1327 as->current_transfer = xfer; in atmel_spi_one_transfer()
1328 as->current_remaining_bytes = xfer->len; in atmel_spi_one_transfer()
1329 while (as->current_remaining_bytes) { in atmel_spi_one_transfer()
1330 reinit_completion(&as->xfer_completion); in atmel_spi_one_transfer()
1332 if (as->use_pdc) { in atmel_spi_one_transfer()
1334 } else if (atmel_spi_use_dma(as, xfer)) { in atmel_spi_one_transfer()
1335 len = as->current_remaining_bytes; in atmel_spi_one_transfer()
1341 as->done_status = ret; in atmel_spi_one_transfer()
1344 as->current_remaining_bytes -= len; in atmel_spi_one_transfer()
1345 if (as->current_remaining_bytes < 0) in atmel_spi_one_transfer()
1346 as->current_remaining_bytes = 0; in atmel_spi_one_transfer()
1353 atmel_spi_unlock(as); in atmel_spi_one_transfer()
1354 dma_timeout = wait_for_completion_timeout(&as->xfer_completion, in atmel_spi_one_transfer()
1356 atmel_spi_lock(as); in atmel_spi_one_transfer()
1359 as->done_status = -EIO; in atmel_spi_one_transfer()
1362 if (as->done_status) in atmel_spi_one_transfer()
1366 if (as->done_status) { in atmel_spi_one_transfer()
1367 if (as->use_pdc) { in atmel_spi_one_transfer()
1370 spi_readl(as, TCR), spi_readl(as, RCR)); in atmel_spi_one_transfer()
1376 spi_writel(as, RNCR, 0); in atmel_spi_one_transfer()
1377 spi_writel(as, TNCR, 0); in atmel_spi_one_transfer()
1378 spi_writel(as, RCR, 0); in atmel_spi_one_transfer()
1379 spi_writel(as, TCR, 0); in atmel_spi_one_transfer()
1381 if (spi_readl(as, SR) & SPI_BIT(TXEMPTY)) in atmel_spi_one_transfer()
1386 while (spi_readl(as, SR) & SPI_BIT(RDRF)) in atmel_spi_one_transfer()
1387 spi_readl(as, RDR); in atmel_spi_one_transfer()
1390 spi_readl(as, SR); in atmel_spi_one_transfer()
1392 } else if (atmel_spi_use_dma(as, xfer)) { in atmel_spi_one_transfer()
1398 && as->use_pdc) in atmel_spi_one_transfer()
1401 if (as->use_pdc) in atmel_spi_one_transfer()
1402 atmel_spi_disable_pdc_transfer(as); in atmel_spi_one_transfer()
1404 atmel_spi_unlock(as); in atmel_spi_one_transfer()
1406 return as->done_status; in atmel_spi_one_transfer()
1420 static inline unsigned int atmel_get_version(struct atmel_spi *as) in atmel_get_version() argument
1422 return spi_readl(as, VERSION) & 0x00000fff; in atmel_get_version()
1425 static void atmel_get_caps(struct atmel_spi *as) in atmel_get_caps() argument
1429 version = atmel_get_version(as); in atmel_get_caps()
1431 as->caps.is_spi2 = version > 0x121; in atmel_get_caps()
1432 as->caps.has_wdrbt = version >= 0x210; in atmel_get_caps()
1433 as->caps.has_dma_support = version >= 0x212; in atmel_get_caps()
1434 as->caps.has_pdc_support = version < 0x212; in atmel_get_caps()
1437 static void atmel_spi_init(struct atmel_spi *as) in atmel_spi_init() argument
1439 spi_writel(as, CR, SPI_BIT(SWRST)); in atmel_spi_init()
1440 spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */ in atmel_spi_init()
1443 if (as->fifo_size) in atmel_spi_init()
1444 spi_writel(as, CR, SPI_BIT(FIFOEN)); in atmel_spi_init()
1446 if (as->caps.has_wdrbt) { in atmel_spi_init()
1447 spi_writel(as, MR, SPI_BIT(WDRBT) | SPI_BIT(MODFDIS) in atmel_spi_init()
1450 spi_writel(as, MR, SPI_BIT(MSTR) | SPI_BIT(MODFDIS)); in atmel_spi_init()
1453 if (as->use_pdc) in atmel_spi_init()
1454 spi_writel(as, PTCR, SPI_BIT(RXTDIS) | SPI_BIT(TXTDIS)); in atmel_spi_init()
1455 spi_writel(as, CR, SPI_BIT(SPIEN)); in atmel_spi_init()
1465 struct atmel_spi *as; in atmel_spi_probe() local
1483 master = spi_alloc_master(&pdev->dev, sizeof(*as)); in atmel_spi_probe()
1505 as = spi_master_get_devdata(master); in atmel_spi_probe()
1507 spin_lock_init(&as->lock); in atmel_spi_probe()
1509 as->pdev = pdev; in atmel_spi_probe()
1510 as->regs = devm_ioremap_resource(&pdev->dev, regs); in atmel_spi_probe()
1511 if (IS_ERR(as->regs)) { in atmel_spi_probe()
1512 ret = PTR_ERR(as->regs); in atmel_spi_probe()
1515 as->phybase = regs->start; in atmel_spi_probe()
1516 as->irq = irq; in atmel_spi_probe()
1517 as->clk = clk; in atmel_spi_probe()
1519 init_completion(&as->xfer_completion); in atmel_spi_probe()
1521 atmel_get_caps(as); in atmel_spi_probe()
1523 as->use_dma = false; in atmel_spi_probe()
1524 as->use_pdc = false; in atmel_spi_probe()
1525 if (as->caps.has_dma_support) { in atmel_spi_probe()
1526 ret = atmel_spi_configure_dma(master, as); in atmel_spi_probe()
1528 as->use_dma = true; in atmel_spi_probe()
1532 } else if (as->caps.has_pdc_support) { in atmel_spi_probe()
1533 as->use_pdc = true; in atmel_spi_probe()
1537 as->addr_rx_bbuf = dma_alloc_coherent(&pdev->dev, in atmel_spi_probe()
1539 &as->dma_addr_rx_bbuf, in atmel_spi_probe()
1541 if (!as->addr_rx_bbuf) { in atmel_spi_probe()
1542 as->use_dma = false; in atmel_spi_probe()
1544 as->addr_tx_bbuf = dma_alloc_coherent(&pdev->dev, in atmel_spi_probe()
1546 &as->dma_addr_tx_bbuf, in atmel_spi_probe()
1548 if (!as->addr_tx_bbuf) { in atmel_spi_probe()
1549 as->use_dma = false; in atmel_spi_probe()
1551 as->addr_rx_bbuf, in atmel_spi_probe()
1552 as->dma_addr_rx_bbuf); in atmel_spi_probe()
1555 if (!as->use_dma) in atmel_spi_probe()
1560 if (as->caps.has_dma_support && !as->use_dma) in atmel_spi_probe()
1563 if (as->use_pdc) { in atmel_spi_probe()
1578 as->spi_clk = clk_get_rate(clk); in atmel_spi_probe()
1580 as->fifo_size = 0; in atmel_spi_probe()
1582 &as->fifo_size)) { in atmel_spi_probe()
1583 dev_info(&pdev->dev, "Using FIFO (%u data)\n", as->fifo_size); in atmel_spi_probe()
1586 atmel_spi_init(as); in atmel_spi_probe()
1599 atmel_get_version(as), (unsigned long)regs->start, in atmel_spi_probe()
1608 if (as->use_dma) in atmel_spi_probe()
1611 spi_writel(as, CR, SPI_BIT(SWRST)); in atmel_spi_probe()
1612 spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */ in atmel_spi_probe()
1623 struct atmel_spi *as = spi_master_get_devdata(master); in atmel_spi_remove() local
1628 if (as->use_dma) { in atmel_spi_remove()
1633 as->addr_tx_bbuf, in atmel_spi_remove()
1634 as->dma_addr_tx_bbuf); in atmel_spi_remove()
1636 as->addr_rx_bbuf, in atmel_spi_remove()
1637 as->dma_addr_rx_bbuf); in atmel_spi_remove()
1641 spin_lock_irq(&as->lock); in atmel_spi_remove()
1642 spi_writel(as, CR, SPI_BIT(SWRST)); in atmel_spi_remove()
1643 spi_writel(as, CR, SPI_BIT(SWRST)); /* AT91SAM9263 Rev B workaround */ in atmel_spi_remove()
1644 spi_readl(as, SR); in atmel_spi_remove()
1645 spin_unlock_irq(&as->lock); in atmel_spi_remove()
1647 clk_disable_unprepare(as->clk); in atmel_spi_remove()
1659 struct atmel_spi *as = spi_master_get_devdata(master); in atmel_spi_runtime_suspend() local
1661 clk_disable_unprepare(as->clk); in atmel_spi_runtime_suspend()
1670 struct atmel_spi *as = spi_master_get_devdata(master); in atmel_spi_runtime_resume() local
1674 return clk_prepare_enable(as->clk); in atmel_spi_runtime_resume()
1697 struct atmel_spi *as = spi_master_get_devdata(master); in atmel_spi_resume() local
1700 ret = clk_prepare_enable(as->clk); in atmel_spi_resume()
1704 atmel_spi_init(as); in atmel_spi_resume()
1706 clk_disable_unprepare(as->clk); in atmel_spi_resume()