Lines Matching refs:hw
61 void (*rx_word)(struct au1550_spi *hw);
62 void (*tx_word)(struct au1550_spi *hw);
64 irqreturn_t (*irq_callback)(struct au1550_spi *hw);
99 static void au1550_spi_bits_handlers_set(struct au1550_spi *hw, int bpw);
111 static u32 au1550_spi_baudcfg(struct au1550_spi *hw, unsigned speed_hz) in au1550_spi_baudcfg() argument
113 u32 mainclk_hz = hw->pdata->mainclk_hz; in au1550_spi_baudcfg()
134 static inline void au1550_spi_mask_ack_all(struct au1550_spi *hw) in au1550_spi_mask_ack_all() argument
136 hw->regs->psc_spimsk = in au1550_spi_mask_ack_all()
142 hw->regs->psc_spievent = in au1550_spi_mask_ack_all()
149 static void au1550_spi_reset_fifos(struct au1550_spi *hw) in au1550_spi_reset_fifos() argument
153 hw->regs->psc_spipcr = PSC_SPIPCR_RC | PSC_SPIPCR_TC; in au1550_spi_reset_fifos()
156 pcr = hw->regs->psc_spipcr; in au1550_spi_reset_fifos()
172 struct au1550_spi *hw = spi_master_get_devdata(spi->master); in au1550_spi_chipsel() local
178 if (hw->pdata->deactivate_cs) in au1550_spi_chipsel()
179 hw->pdata->deactivate_cs(hw->pdata, spi->chip_select, in au1550_spi_chipsel()
184 au1550_spi_bits_handlers_set(hw, spi->bits_per_word); in au1550_spi_chipsel()
186 cfg = hw->regs->psc_spicfg; in au1550_spi_chipsel()
188 hw->regs->psc_spicfg = cfg & ~PSC_SPICFG_DE_ENABLE; in au1550_spi_chipsel()
205 if (hw->usedma && spi->bits_per_word <= 8) in au1550_spi_chipsel()
214 cfg |= au1550_spi_baudcfg(hw, spi->max_speed_hz); in au1550_spi_chipsel()
216 hw->regs->psc_spicfg = cfg | PSC_SPICFG_DE_ENABLE; in au1550_spi_chipsel()
219 stat = hw->regs->psc_spistat; in au1550_spi_chipsel()
223 if (hw->pdata->activate_cs) in au1550_spi_chipsel()
224 hw->pdata->activate_cs(hw->pdata, spi->chip_select, in au1550_spi_chipsel()
232 struct au1550_spi *hw = spi_master_get_devdata(spi->master); in au1550_spi_setupxfer() local
247 au1550_spi_bits_handlers_set(hw, spi->bits_per_word); in au1550_spi_setupxfer()
249 cfg = hw->regs->psc_spicfg; in au1550_spi_setupxfer()
251 hw->regs->psc_spicfg = cfg & ~PSC_SPICFG_DE_ENABLE; in au1550_spi_setupxfer()
254 if (hw->usedma && bpw <= 8) in au1550_spi_setupxfer()
263 cfg |= au1550_spi_baudcfg(hw, hz); in au1550_spi_setupxfer()
265 hw->regs->psc_spicfg = cfg; in au1550_spi_setupxfer()
270 stat = hw->regs->psc_spistat; in au1550_spi_setupxfer()
275 au1550_spi_reset_fifos(hw); in au1550_spi_setupxfer()
276 au1550_spi_mask_ack_all(hw); in au1550_spi_setupxfer()
288 static int au1550_spi_dma_rxtmp_alloc(struct au1550_spi *hw, unsigned size) in au1550_spi_dma_rxtmp_alloc() argument
290 hw->dma_rx_tmpbuf = kmalloc(size, GFP_KERNEL); in au1550_spi_dma_rxtmp_alloc()
291 if (!hw->dma_rx_tmpbuf) in au1550_spi_dma_rxtmp_alloc()
293 hw->dma_rx_tmpbuf_size = size; in au1550_spi_dma_rxtmp_alloc()
294 hw->dma_rx_tmpbuf_addr = dma_map_single(hw->dev, hw->dma_rx_tmpbuf, in au1550_spi_dma_rxtmp_alloc()
296 if (dma_mapping_error(hw->dev, hw->dma_rx_tmpbuf_addr)) { in au1550_spi_dma_rxtmp_alloc()
297 kfree(hw->dma_rx_tmpbuf); in au1550_spi_dma_rxtmp_alloc()
298 hw->dma_rx_tmpbuf = 0; in au1550_spi_dma_rxtmp_alloc()
299 hw->dma_rx_tmpbuf_size = 0; in au1550_spi_dma_rxtmp_alloc()
305 static void au1550_spi_dma_rxtmp_free(struct au1550_spi *hw) in au1550_spi_dma_rxtmp_free() argument
307 dma_unmap_single(hw->dev, hw->dma_rx_tmpbuf_addr, in au1550_spi_dma_rxtmp_free()
308 hw->dma_rx_tmpbuf_size, DMA_FROM_DEVICE); in au1550_spi_dma_rxtmp_free()
309 kfree(hw->dma_rx_tmpbuf); in au1550_spi_dma_rxtmp_free()
310 hw->dma_rx_tmpbuf = 0; in au1550_spi_dma_rxtmp_free()
311 hw->dma_rx_tmpbuf_size = 0; in au1550_spi_dma_rxtmp_free()
316 struct au1550_spi *hw = spi_master_get_devdata(spi->master); in au1550_spi_dma_txrxb() local
321 hw->len = t->len; in au1550_spi_dma_txrxb()
322 hw->tx_count = 0; in au1550_spi_dma_txrxb()
323 hw->rx_count = 0; in au1550_spi_dma_txrxb()
325 hw->tx = t->tx_buf; in au1550_spi_dma_txrxb()
326 hw->rx = t->rx_buf; in au1550_spi_dma_txrxb()
340 dma_tx_addr = dma_map_single(hw->dev, in au1550_spi_dma_txrxb()
343 if (dma_mapping_error(hw->dev, dma_tx_addr)) in au1550_spi_dma_txrxb()
344 dev_err(hw->dev, "tx dma map error\n"); in au1550_spi_dma_txrxb()
350 dma_rx_addr = dma_map_single(hw->dev, in au1550_spi_dma_txrxb()
353 if (dma_mapping_error(hw->dev, dma_rx_addr)) in au1550_spi_dma_txrxb()
354 dev_err(hw->dev, "rx dma map error\n"); in au1550_spi_dma_txrxb()
357 if (t->len > hw->dma_rx_tmpbuf_size) { in au1550_spi_dma_txrxb()
360 au1550_spi_dma_rxtmp_free(hw); in au1550_spi_dma_txrxb()
361 ret = au1550_spi_dma_rxtmp_alloc(hw, max(t->len, in au1550_spi_dma_txrxb()
366 hw->rx = hw->dma_rx_tmpbuf; in au1550_spi_dma_txrxb()
367 dma_rx_addr = hw->dma_rx_tmpbuf_addr; in au1550_spi_dma_txrxb()
368 dma_sync_single_for_device(hw->dev, dma_rx_addr, in au1550_spi_dma_txrxb()
373 dma_sync_single_for_device(hw->dev, dma_rx_addr, in au1550_spi_dma_txrxb()
375 hw->tx = hw->rx; in au1550_spi_dma_txrxb()
379 res = au1xxx_dbdma_put_dest(hw->dma_rx_ch, virt_to_phys(hw->rx), in au1550_spi_dma_txrxb()
382 dev_err(hw->dev, "rx dma put dest error\n"); in au1550_spi_dma_txrxb()
384 res = au1xxx_dbdma_put_source(hw->dma_tx_ch, virt_to_phys(hw->tx), in au1550_spi_dma_txrxb()
387 dev_err(hw->dev, "tx dma put source error\n"); in au1550_spi_dma_txrxb()
389 au1xxx_dbdma_start(hw->dma_rx_ch); in au1550_spi_dma_txrxb()
390 au1xxx_dbdma_start(hw->dma_tx_ch); in au1550_spi_dma_txrxb()
393 hw->regs->psc_spimsk = PSC_SPIMSK_SD; in au1550_spi_dma_txrxb()
397 hw->regs->psc_spipcr = PSC_SPIPCR_MS; in au1550_spi_dma_txrxb()
400 wait_for_completion(&hw->master_done); in au1550_spi_dma_txrxb()
402 au1xxx_dbdma_stop(hw->dma_tx_ch); in au1550_spi_dma_txrxb()
403 au1xxx_dbdma_stop(hw->dma_rx_ch); in au1550_spi_dma_txrxb()
407 dma_sync_single_for_cpu(hw->dev, dma_rx_addr, t->len, in au1550_spi_dma_txrxb()
412 dma_unmap_single(hw->dev, dma_rx_addr, t->len, in au1550_spi_dma_txrxb()
415 dma_unmap_single(hw->dev, dma_tx_addr, t->len, in au1550_spi_dma_txrxb()
418 return hw->rx_count < hw->tx_count ? hw->rx_count : hw->tx_count; in au1550_spi_dma_txrxb()
421 static irqreturn_t au1550_spi_dma_irq_callback(struct au1550_spi *hw) in au1550_spi_dma_irq_callback() argument
425 stat = hw->regs->psc_spistat; in au1550_spi_dma_irq_callback()
426 evnt = hw->regs->psc_spievent; in au1550_spi_dma_irq_callback()
429 dev_err(hw->dev, "Unexpected IRQ!\n"); in au1550_spi_dma_irq_callback()
442 au1550_spi_mask_ack_all(hw); in au1550_spi_dma_irq_callback()
443 au1xxx_dbdma_stop(hw->dma_rx_ch); in au1550_spi_dma_irq_callback()
444 au1xxx_dbdma_stop(hw->dma_tx_ch); in au1550_spi_dma_irq_callback()
447 hw->rx_count = hw->len - au1xxx_get_dma_residue(hw->dma_rx_ch); in au1550_spi_dma_irq_callback()
448 hw->tx_count = hw->len - au1xxx_get_dma_residue(hw->dma_tx_ch); in au1550_spi_dma_irq_callback()
450 au1xxx_dbdma_reset(hw->dma_rx_ch); in au1550_spi_dma_irq_callback()
451 au1xxx_dbdma_reset(hw->dma_tx_ch); in au1550_spi_dma_irq_callback()
452 au1550_spi_reset_fifos(hw); in au1550_spi_dma_irq_callback()
455 dev_err(hw->dev, in au1550_spi_dma_irq_callback()
458 dev_err(hw->dev, in au1550_spi_dma_irq_callback()
462 complete(&hw->master_done); in au1550_spi_dma_irq_callback()
468 au1550_spi_mask_ack_all(hw); in au1550_spi_dma_irq_callback()
469 hw->rx_count = hw->len; in au1550_spi_dma_irq_callback()
470 hw->tx_count = hw->len; in au1550_spi_dma_irq_callback()
471 complete(&hw->master_done); in au1550_spi_dma_irq_callback()
479 static void au1550_spi_rx_word_##size(struct au1550_spi *hw) \
481 u32 fifoword = hw->regs->psc_spitxrx & (u32)(mask); \
483 if (hw->rx) { \
484 *(u##size *)hw->rx = (u##size)fifoword; \
485 hw->rx += (size) / 8; \
487 hw->rx_count += (size) / 8; \
491 static void au1550_spi_tx_word_##size(struct au1550_spi *hw) \
494 if (hw->tx) { \
495 fifoword = *(u##size *)hw->tx & (u32)(mask); \
496 hw->tx += (size) / 8; \
498 hw->tx_count += (size) / 8; \
499 if (hw->tx_count >= hw->len) \
501 hw->regs->psc_spitxrx = fifoword; \
515 struct au1550_spi *hw = spi_master_get_devdata(spi->master); in au1550_spi_pio_txrxb() local
517 hw->tx = t->tx_buf; in au1550_spi_pio_txrxb()
518 hw->rx = t->rx_buf; in au1550_spi_pio_txrxb()
519 hw->len = t->len; in au1550_spi_pio_txrxb()
520 hw->tx_count = 0; in au1550_spi_pio_txrxb()
521 hw->rx_count = 0; in au1550_spi_pio_txrxb()
527 while (hw->tx_count < hw->len) { in au1550_spi_pio_txrxb()
529 hw->tx_word(hw); in au1550_spi_pio_txrxb()
531 if (hw->tx_count >= hw->len) { in au1550_spi_pio_txrxb()
536 stat = hw->regs->psc_spistat; in au1550_spi_pio_txrxb()
543 hw->regs->psc_spimsk = mask; in au1550_spi_pio_txrxb()
547 hw->regs->psc_spipcr = PSC_SPIPCR_MS; in au1550_spi_pio_txrxb()
550 wait_for_completion(&hw->master_done); in au1550_spi_pio_txrxb()
552 return hw->rx_count < hw->tx_count ? hw->rx_count : hw->tx_count; in au1550_spi_pio_txrxb()
555 static irqreturn_t au1550_spi_pio_irq_callback(struct au1550_spi *hw) in au1550_spi_pio_irq_callback() argument
560 stat = hw->regs->psc_spistat; in au1550_spi_pio_irq_callback()
561 evnt = hw->regs->psc_spievent; in au1550_spi_pio_irq_callback()
564 dev_err(hw->dev, "Unexpected IRQ!\n"); in au1550_spi_pio_irq_callback()
576 au1550_spi_mask_ack_all(hw); in au1550_spi_pio_irq_callback()
577 au1550_spi_reset_fifos(hw); in au1550_spi_pio_irq_callback()
578 dev_err(hw->dev, in au1550_spi_pio_irq_callback()
581 complete(&hw->master_done); in au1550_spi_pio_irq_callback()
591 stat = hw->regs->psc_spistat; in au1550_spi_pio_irq_callback()
603 if (!(stat & PSC_SPISTAT_RE) && hw->rx_count < hw->len) { in au1550_spi_pio_irq_callback()
604 hw->rx_word(hw); in au1550_spi_pio_irq_callback()
607 if (!(stat & PSC_SPISTAT_TF) && hw->tx_count < hw->len) in au1550_spi_pio_irq_callback()
608 hw->tx_word(hw); in au1550_spi_pio_irq_callback()
612 hw->regs->psc_spievent = PSC_SPIEVNT_RR | PSC_SPIEVNT_TR; in au1550_spi_pio_irq_callback()
631 hw->regs->psc_spievent = PSC_SPIEVNT_TU | PSC_SPIEVNT_MD; in au1550_spi_pio_irq_callback()
633 hw->regs->psc_spipcr = PSC_SPIPCR_MS; in au1550_spi_pio_irq_callback()
637 if (hw->rx_count >= hw->len) { in au1550_spi_pio_irq_callback()
639 au1550_spi_mask_ack_all(hw); in au1550_spi_pio_irq_callback()
640 complete(&hw->master_done); in au1550_spi_pio_irq_callback()
647 struct au1550_spi *hw = spi_master_get_devdata(spi->master); in au1550_spi_txrx_bufs() local
648 return hw->txrx_bufs(spi, t); in au1550_spi_txrx_bufs()
653 struct au1550_spi *hw = dev; in au1550_spi_irq() local
654 return hw->irq_callback(hw); in au1550_spi_irq()
657 static void au1550_spi_bits_handlers_set(struct au1550_spi *hw, int bpw) in au1550_spi_bits_handlers_set() argument
660 if (hw->usedma) { in au1550_spi_bits_handlers_set()
661 hw->txrx_bufs = &au1550_spi_dma_txrxb; in au1550_spi_bits_handlers_set()
662 hw->irq_callback = &au1550_spi_dma_irq_callback; in au1550_spi_bits_handlers_set()
664 hw->rx_word = &au1550_spi_rx_word_8; in au1550_spi_bits_handlers_set()
665 hw->tx_word = &au1550_spi_tx_word_8; in au1550_spi_bits_handlers_set()
666 hw->txrx_bufs = &au1550_spi_pio_txrxb; in au1550_spi_bits_handlers_set()
667 hw->irq_callback = &au1550_spi_pio_irq_callback; in au1550_spi_bits_handlers_set()
670 hw->rx_word = &au1550_spi_rx_word_16; in au1550_spi_bits_handlers_set()
671 hw->tx_word = &au1550_spi_tx_word_16; in au1550_spi_bits_handlers_set()
672 hw->txrx_bufs = &au1550_spi_pio_txrxb; in au1550_spi_bits_handlers_set()
673 hw->irq_callback = &au1550_spi_pio_irq_callback; in au1550_spi_bits_handlers_set()
675 hw->rx_word = &au1550_spi_rx_word_32; in au1550_spi_bits_handlers_set()
676 hw->tx_word = &au1550_spi_tx_word_32; in au1550_spi_bits_handlers_set()
677 hw->txrx_bufs = &au1550_spi_pio_txrxb; in au1550_spi_bits_handlers_set()
678 hw->irq_callback = &au1550_spi_pio_irq_callback; in au1550_spi_bits_handlers_set()
682 static void au1550_spi_setup_psc_as_spi(struct au1550_spi *hw) in au1550_spi_setup_psc_as_spi() argument
687 hw->regs->psc_ctrl = PSC_CTRL_DISABLE; in au1550_spi_setup_psc_as_spi()
689 hw->regs->psc_sel = PSC_SEL_PS_SPIMODE; in au1550_spi_setup_psc_as_spi()
692 hw->regs->psc_spicfg = 0; in au1550_spi_setup_psc_as_spi()
695 hw->regs->psc_ctrl = PSC_CTRL_ENABLE; in au1550_spi_setup_psc_as_spi()
699 stat = hw->regs->psc_spistat; in au1550_spi_setup_psc_as_spi()
704 cfg = hw->usedma ? 0 : PSC_SPICFG_DD_DISABLE; in au1550_spi_setup_psc_as_spi()
714 hw->regs->psc_spicfg = cfg; in au1550_spi_setup_psc_as_spi()
717 au1550_spi_mask_ack_all(hw); in au1550_spi_setup_psc_as_spi()
719 hw->regs->psc_spicfg |= PSC_SPICFG_DE_ENABLE; in au1550_spi_setup_psc_as_spi()
723 stat = hw->regs->psc_spistat; in au1550_spi_setup_psc_as_spi()
727 au1550_spi_reset_fifos(hw); in au1550_spi_setup_psc_as_spi()
733 struct au1550_spi *hw; in au1550_spi_probe() local
749 hw = spi_master_get_devdata(master); in au1550_spi_probe()
751 hw->master = master; in au1550_spi_probe()
752 hw->pdata = dev_get_platdata(&pdev->dev); in au1550_spi_probe()
753 hw->dev = &pdev->dev; in au1550_spi_probe()
755 if (hw->pdata == NULL) { in au1550_spi_probe()
767 hw->irq = r->start; in au1550_spi_probe()
769 hw->usedma = 0; in au1550_spi_probe()
772 hw->dma_tx_id = r->start; in au1550_spi_probe()
775 hw->dma_rx_id = r->start; in au1550_spi_probe()
780 hw->usedma = 1; in au1550_spi_probe()
792 hw->ioarea = request_mem_region(r->start, sizeof(psc_spi_t), in au1550_spi_probe()
794 if (!hw->ioarea) { in au1550_spi_probe()
800 hw->regs = (psc_spi_t __iomem *)ioremap(r->start, sizeof(psc_spi_t)); in au1550_spi_probe()
801 if (!hw->regs) { in au1550_spi_probe()
807 platform_set_drvdata(pdev, hw); in au1550_spi_probe()
809 init_completion(&hw->master_done); in au1550_spi_probe()
811 hw->bitbang.master = hw->master; in au1550_spi_probe()
812 hw->bitbang.setup_transfer = au1550_spi_setupxfer; in au1550_spi_probe()
813 hw->bitbang.chipselect = au1550_spi_chipsel; in au1550_spi_probe()
814 hw->bitbang.txrx_bufs = au1550_spi_txrx_bufs; in au1550_spi_probe()
816 if (hw->usedma) { in au1550_spi_probe()
817 hw->dma_tx_ch = au1xxx_dbdma_chan_alloc(ddma_memid, in au1550_spi_probe()
818 hw->dma_tx_id, NULL, (void *)hw); in au1550_spi_probe()
819 if (hw->dma_tx_ch == 0) { in au1550_spi_probe()
825 au1xxx_dbdma_set_devwidth(hw->dma_tx_ch, 8); in au1550_spi_probe()
826 if (au1xxx_dbdma_ring_alloc(hw->dma_tx_ch, in au1550_spi_probe()
835 hw->dma_rx_ch = au1xxx_dbdma_chan_alloc(hw->dma_rx_id, in au1550_spi_probe()
836 ddma_memid, NULL, (void *)hw); in au1550_spi_probe()
837 if (hw->dma_rx_ch == 0) { in au1550_spi_probe()
843 au1xxx_dbdma_set_devwidth(hw->dma_rx_ch, 8); in au1550_spi_probe()
844 if (au1xxx_dbdma_ring_alloc(hw->dma_rx_ch, in au1550_spi_probe()
852 err = au1550_spi_dma_rxtmp_alloc(hw, in au1550_spi_probe()
861 au1550_spi_bits_handlers_set(hw, 8); in au1550_spi_probe()
863 err = request_irq(hw->irq, au1550_spi_irq, 0, pdev->name, hw); in au1550_spi_probe()
870 master->num_chipselect = hw->pdata->num_chipselect; in au1550_spi_probe()
884 master->max_speed_hz = hw->pdata->mainclk_hz / min_div; in au1550_spi_probe()
886 hw->pdata->mainclk_hz / (max_div + 1) + 1; in au1550_spi_probe()
889 au1550_spi_setup_psc_as_spi(hw); in au1550_spi_probe()
891 err = spi_bitbang_start(&hw->bitbang); in au1550_spi_probe()
904 free_irq(hw->irq, hw); in au1550_spi_probe()
907 au1550_spi_dma_rxtmp_free(hw); in au1550_spi_probe()
911 if (hw->usedma) in au1550_spi_probe()
912 au1xxx_dbdma_chan_free(hw->dma_rx_ch); in au1550_spi_probe()
916 if (hw->usedma) in au1550_spi_probe()
917 au1xxx_dbdma_chan_free(hw->dma_tx_ch); in au1550_spi_probe()
920 iounmap((void __iomem *)hw->regs); in au1550_spi_probe()
927 spi_master_put(hw->master); in au1550_spi_probe()
935 struct au1550_spi *hw = platform_get_drvdata(pdev); in au1550_spi_remove() local
938 hw->master->bus_num); in au1550_spi_remove()
940 spi_bitbang_stop(&hw->bitbang); in au1550_spi_remove()
941 free_irq(hw->irq, hw); in au1550_spi_remove()
942 iounmap((void __iomem *)hw->regs); in au1550_spi_remove()
943 release_mem_region(hw->ioarea->start, sizeof(psc_spi_t)); in au1550_spi_remove()
945 if (hw->usedma) { in au1550_spi_remove()
946 au1550_spi_dma_rxtmp_free(hw); in au1550_spi_remove()
947 au1xxx_dbdma_chan_free(hw->dma_rx_ch); in au1550_spi_remove()
948 au1xxx_dbdma_chan_free(hw->dma_tx_ch); in au1550_spi_remove()
951 spi_master_put(hw->master); in au1550_spi_remove()