Lines Matching refs:pl022
367 struct pl022 { struct
440 static void internal_cs_control(struct pl022 *pl022, u32 command) in internal_cs_control() argument
444 tmp = readw(SSP_CSR(pl022->virtbase)); in internal_cs_control()
446 tmp &= ~BIT(pl022->cur_cs); in internal_cs_control()
448 tmp |= BIT(pl022->cur_cs); in internal_cs_control()
449 writew(tmp, SSP_CSR(pl022->virtbase)); in internal_cs_control()
452 static void pl022_cs_control(struct pl022 *pl022, u32 command) in pl022_cs_control() argument
454 if (pl022->vendor->internal_cs_ctrl) in pl022_cs_control()
455 internal_cs_control(pl022, command); in pl022_cs_control()
456 else if (pl022->cur_gpiod) in pl022_cs_control()
465 gpiod_set_value(pl022->cur_gpiod, !command); in pl022_cs_control()
474 static void giveback(struct pl022 *pl022) in giveback() argument
477 pl022->next_msg_cs_active = false; in giveback()
479 last_transfer = list_last_entry(&pl022->cur_msg->transfers, in giveback()
503 next_msg = spi_get_next_queued_message(pl022->host); in giveback()
509 if (next_msg && next_msg->spi != pl022->cur_msg->spi) in giveback()
511 if (!next_msg || pl022->cur_msg->state == STATE_ERROR) in giveback()
512 pl022_cs_control(pl022, SSP_CHIP_DESELECT); in giveback()
514 pl022->next_msg_cs_active = true; in giveback()
518 pl022->cur_msg = NULL; in giveback()
519 pl022->cur_transfer = NULL; in giveback()
520 pl022->cur_chip = NULL; in giveback()
523 writew((readw(SSP_CR1(pl022->virtbase)) & in giveback()
524 (~SSP_CR1_MASK_SSE)), SSP_CR1(pl022->virtbase)); in giveback()
526 spi_finalize_current_message(pl022->host); in giveback()
533 static int flush(struct pl022 *pl022) in flush() argument
537 dev_dbg(&pl022->adev->dev, "flush\n"); in flush()
539 while (readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_RNE) in flush()
540 readw(SSP_DR(pl022->virtbase)); in flush()
541 } while ((readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_BSY) && limit--); in flush()
543 pl022->exp_fifo_level = 0; in flush()
552 static void restore_state(struct pl022 *pl022) in restore_state() argument
554 struct chip_data *chip = pl022->cur_chip; in restore_state()
556 if (pl022->vendor->extended_cr) in restore_state()
557 writel(chip->cr0, SSP_CR0(pl022->virtbase)); in restore_state()
559 writew(chip->cr0, SSP_CR0(pl022->virtbase)); in restore_state()
560 writew(chip->cr1, SSP_CR1(pl022->virtbase)); in restore_state()
561 writew(chip->dmacr, SSP_DMACR(pl022->virtbase)); in restore_state()
562 writew(chip->cpsr, SSP_CPSR(pl022->virtbase)); in restore_state()
563 writew(DISABLE_ALL_INTERRUPTS, SSP_IMSC(pl022->virtbase)); in restore_state()
564 writew(CLEAR_ALL_INTERRUPTS, SSP_ICR(pl022->virtbase)); in restore_state()
642 static void load_ssp_default_config(struct pl022 *pl022) in load_ssp_default_config() argument
644 if (pl022->vendor->pl023) { in load_ssp_default_config()
645 writel(DEFAULT_SSP_REG_CR0_ST_PL023, SSP_CR0(pl022->virtbase)); in load_ssp_default_config()
646 writew(DEFAULT_SSP_REG_CR1_ST_PL023, SSP_CR1(pl022->virtbase)); in load_ssp_default_config()
647 } else if (pl022->vendor->extended_cr) { in load_ssp_default_config()
648 writel(DEFAULT_SSP_REG_CR0_ST, SSP_CR0(pl022->virtbase)); in load_ssp_default_config()
649 writew(DEFAULT_SSP_REG_CR1_ST, SSP_CR1(pl022->virtbase)); in load_ssp_default_config()
651 writew(DEFAULT_SSP_REG_CR0, SSP_CR0(pl022->virtbase)); in load_ssp_default_config()
652 writew(DEFAULT_SSP_REG_CR1, SSP_CR1(pl022->virtbase)); in load_ssp_default_config()
654 writew(DEFAULT_SSP_REG_DMACR, SSP_DMACR(pl022->virtbase)); in load_ssp_default_config()
655 writew(DEFAULT_SSP_REG_CPSR, SSP_CPSR(pl022->virtbase)); in load_ssp_default_config()
656 writew(DISABLE_ALL_INTERRUPTS, SSP_IMSC(pl022->virtbase)); in load_ssp_default_config()
657 writew(CLEAR_ALL_INTERRUPTS, SSP_ICR(pl022->virtbase)); in load_ssp_default_config()
664 static void readwriter(struct pl022 *pl022) in readwriter() argument
677 dev_dbg(&pl022->adev->dev, in readwriter()
679 __func__, pl022->rx, pl022->rx_end, pl022->tx, pl022->tx_end); in readwriter()
682 while ((readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_RNE) in readwriter()
683 && (pl022->rx < pl022->rx_end)) { in readwriter()
684 switch (pl022->read) { in readwriter()
686 readw(SSP_DR(pl022->virtbase)); in readwriter()
689 *(u8 *) (pl022->rx) = in readwriter()
690 readw(SSP_DR(pl022->virtbase)) & 0xFFU; in readwriter()
693 *(u16 *) (pl022->rx) = in readwriter()
694 (u16) readw(SSP_DR(pl022->virtbase)); in readwriter()
697 *(u32 *) (pl022->rx) = in readwriter()
698 readl(SSP_DR(pl022->virtbase)); in readwriter()
701 pl022->rx += (pl022->cur_chip->n_bytes); in readwriter()
702 pl022->exp_fifo_level--; in readwriter()
707 while ((pl022->exp_fifo_level < pl022->vendor->fifodepth) in readwriter()
708 && (pl022->tx < pl022->tx_end)) { in readwriter()
709 switch (pl022->write) { in readwriter()
711 writew(0x0, SSP_DR(pl022->virtbase)); in readwriter()
714 writew(*(u8 *) (pl022->tx), SSP_DR(pl022->virtbase)); in readwriter()
717 writew((*(u16 *) (pl022->tx)), SSP_DR(pl022->virtbase)); in readwriter()
720 writel(*(u32 *) (pl022->tx), SSP_DR(pl022->virtbase)); in readwriter()
723 pl022->tx += (pl022->cur_chip->n_bytes); in readwriter()
724 pl022->exp_fifo_level++; in readwriter()
731 while ((readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_RNE) in readwriter()
732 && (pl022->rx < pl022->rx_end)) { in readwriter()
733 switch (pl022->read) { in readwriter()
735 readw(SSP_DR(pl022->virtbase)); in readwriter()
738 *(u8 *) (pl022->rx) = in readwriter()
739 readw(SSP_DR(pl022->virtbase)) & 0xFFU; in readwriter()
742 *(u16 *) (pl022->rx) = in readwriter()
743 (u16) readw(SSP_DR(pl022->virtbase)); in readwriter()
746 *(u32 *) (pl022->rx) = in readwriter()
747 readl(SSP_DR(pl022->virtbase)); in readwriter()
750 pl022->rx += (pl022->cur_chip->n_bytes); in readwriter()
751 pl022->exp_fifo_level--; in readwriter()
769 static void *next_transfer(struct pl022 *pl022) in next_transfer() argument
771 struct spi_message *msg = pl022->cur_msg; in next_transfer()
772 struct spi_transfer *trans = pl022->cur_transfer; in next_transfer()
776 pl022->cur_transfer = in next_transfer()
789 static void unmap_free_dma_scatter(struct pl022 *pl022) in unmap_free_dma_scatter() argument
792 dma_unmap_sg(pl022->dma_tx_channel->device->dev, pl022->sgt_tx.sgl, in unmap_free_dma_scatter()
793 pl022->sgt_tx.nents, DMA_TO_DEVICE); in unmap_free_dma_scatter()
794 dma_unmap_sg(pl022->dma_rx_channel->device->dev, pl022->sgt_rx.sgl, in unmap_free_dma_scatter()
795 pl022->sgt_rx.nents, DMA_FROM_DEVICE); in unmap_free_dma_scatter()
796 sg_free_table(&pl022->sgt_rx); in unmap_free_dma_scatter()
797 sg_free_table(&pl022->sgt_tx); in unmap_free_dma_scatter()
802 struct pl022 *pl022 = data; in dma_callback() local
803 struct spi_message *msg = pl022->cur_msg; in dma_callback()
805 BUG_ON(!pl022->sgt_rx.sgl); in dma_callback()
818 dma_sync_sg_for_cpu(&pl022->adev->dev, in dma_callback()
819 pl022->sgt_rx.sgl, in dma_callback()
820 pl022->sgt_rx.nents, in dma_callback()
823 for_each_sg(pl022->sgt_rx.sgl, sg, pl022->sgt_rx.nents, i) { in dma_callback()
824 dev_dbg(&pl022->adev->dev, "SPI RX SG ENTRY: %d", i); in dma_callback()
833 for_each_sg(pl022->sgt_tx.sgl, sg, pl022->sgt_tx.nents, i) { in dma_callback()
834 dev_dbg(&pl022->adev->dev, "SPI TX SG ENTRY: %d", i); in dma_callback()
846 unmap_free_dma_scatter(pl022); in dma_callback()
849 msg->actual_length += pl022->cur_transfer->len; in dma_callback()
851 msg->state = next_transfer(pl022); in dma_callback()
852 if (msg->state != STATE_DONE && pl022->cur_transfer->cs_change) in dma_callback()
853 pl022_cs_control(pl022, SSP_CHIP_DESELECT); in dma_callback()
854 tasklet_schedule(&pl022->pump_transfers); in dma_callback()
857 static void setup_dma_scatter(struct pl022 *pl022, in setup_dma_scatter() argument
884 dev_dbg(&pl022->adev->dev, in setup_dma_scatter()
895 sg_set_page(sg, virt_to_page(pl022->dummypage), in setup_dma_scatter()
898 dev_dbg(&pl022->adev->dev, in setup_dma_scatter()
911 static int configure_dma(struct pl022 *pl022) in configure_dma() argument
914 .src_addr = SSP_DR(pl022->phybase), in configure_dma()
919 .dst_addr = SSP_DR(pl022->phybase), in configure_dma()
926 struct dma_chan *rxchan = pl022->dma_rx_channel; in configure_dma()
927 struct dma_chan *txchan = pl022->dma_tx_channel; in configure_dma()
941 switch (pl022->rx_lev_trig) { in configure_dma()
958 rx_conf.src_maxburst = pl022->vendor->fifodepth >> 1; in configure_dma()
962 switch (pl022->tx_lev_trig) { in configure_dma()
979 tx_conf.dst_maxburst = pl022->vendor->fifodepth >> 1; in configure_dma()
983 switch (pl022->read) { in configure_dma()
999 switch (pl022->write) { in configure_dma()
1026 pages = DIV_ROUND_UP(pl022->cur_transfer->len, PAGE_SIZE); in configure_dma()
1027 dev_dbg(&pl022->adev->dev, "using %d pages for transfer\n", pages); in configure_dma()
1029 ret = sg_alloc_table(&pl022->sgt_rx, pages, GFP_ATOMIC); in configure_dma()
1033 ret = sg_alloc_table(&pl022->sgt_tx, pages, GFP_ATOMIC); in configure_dma()
1038 setup_dma_scatter(pl022, pl022->rx, in configure_dma()
1039 pl022->cur_transfer->len, &pl022->sgt_rx); in configure_dma()
1040 setup_dma_scatter(pl022, pl022->tx, in configure_dma()
1041 pl022->cur_transfer->len, &pl022->sgt_tx); in configure_dma()
1044 rx_sglen = dma_map_sg(rxchan->device->dev, pl022->sgt_rx.sgl, in configure_dma()
1045 pl022->sgt_rx.nents, DMA_FROM_DEVICE); in configure_dma()
1049 tx_sglen = dma_map_sg(txchan->device->dev, pl022->sgt_tx.sgl, in configure_dma()
1050 pl022->sgt_tx.nents, DMA_TO_DEVICE); in configure_dma()
1056 pl022->sgt_rx.sgl, in configure_dma()
1064 pl022->sgt_tx.sgl, in configure_dma()
1073 rxdesc->callback_param = pl022; in configure_dma()
1080 pl022->dma_running = true; in configure_dma()
1088 dma_unmap_sg(txchan->device->dev, pl022->sgt_tx.sgl, in configure_dma()
1089 pl022->sgt_tx.nents, DMA_TO_DEVICE); in configure_dma()
1091 dma_unmap_sg(rxchan->device->dev, pl022->sgt_rx.sgl, in configure_dma()
1092 pl022->sgt_rx.nents, DMA_FROM_DEVICE); in configure_dma()
1094 sg_free_table(&pl022->sgt_tx); in configure_dma()
1096 sg_free_table(&pl022->sgt_rx); in configure_dma()
1101 static int pl022_dma_probe(struct pl022 *pl022) in pl022_dma_probe() argument
1112 pl022->dma_rx_channel = dma_request_channel(mask, in pl022_dma_probe()
1113 pl022->host_info->dma_filter, in pl022_dma_probe()
1114 pl022->host_info->dma_rx_param); in pl022_dma_probe()
1115 if (!pl022->dma_rx_channel) { in pl022_dma_probe()
1116 dev_dbg(&pl022->adev->dev, "no RX DMA channel!\n"); in pl022_dma_probe()
1120 pl022->dma_tx_channel = dma_request_channel(mask, in pl022_dma_probe()
1121 pl022->host_info->dma_filter, in pl022_dma_probe()
1122 pl022->host_info->dma_tx_param); in pl022_dma_probe()
1123 if (!pl022->dma_tx_channel) { in pl022_dma_probe()
1124 dev_dbg(&pl022->adev->dev, "no TX DMA channel!\n"); in pl022_dma_probe()
1128 pl022->dummypage = kmalloc(PAGE_SIZE, GFP_KERNEL); in pl022_dma_probe()
1129 if (!pl022->dummypage) in pl022_dma_probe()
1132 dev_info(&pl022->adev->dev, "setup for DMA on RX %s, TX %s\n", in pl022_dma_probe()
1133 dma_chan_name(pl022->dma_rx_channel), in pl022_dma_probe()
1134 dma_chan_name(pl022->dma_tx_channel)); in pl022_dma_probe()
1139 dma_release_channel(pl022->dma_tx_channel); in pl022_dma_probe()
1141 dma_release_channel(pl022->dma_rx_channel); in pl022_dma_probe()
1142 pl022->dma_rx_channel = NULL; in pl022_dma_probe()
1144 dev_err(&pl022->adev->dev, in pl022_dma_probe()
1149 static int pl022_dma_autoprobe(struct pl022 *pl022) in pl022_dma_autoprobe() argument
1151 struct device *dev = &pl022->adev->dev; in pl022_dma_autoprobe()
1162 pl022->dma_rx_channel = chan; in pl022_dma_autoprobe()
1170 pl022->dma_tx_channel = chan; in pl022_dma_autoprobe()
1172 pl022->dummypage = kmalloc(PAGE_SIZE, GFP_KERNEL); in pl022_dma_autoprobe()
1173 if (!pl022->dummypage) { in pl022_dma_autoprobe()
1181 dma_release_channel(pl022->dma_tx_channel); in pl022_dma_autoprobe()
1182 pl022->dma_tx_channel = NULL; in pl022_dma_autoprobe()
1184 dma_release_channel(pl022->dma_rx_channel); in pl022_dma_autoprobe()
1185 pl022->dma_rx_channel = NULL; in pl022_dma_autoprobe()
1190 static void terminate_dma(struct pl022 *pl022) in terminate_dma() argument
1192 struct dma_chan *rxchan = pl022->dma_rx_channel; in terminate_dma()
1193 struct dma_chan *txchan = pl022->dma_tx_channel; in terminate_dma()
1197 unmap_free_dma_scatter(pl022); in terminate_dma()
1198 pl022->dma_running = false; in terminate_dma()
1201 static void pl022_dma_remove(struct pl022 *pl022) in pl022_dma_remove() argument
1203 if (pl022->dma_running) in pl022_dma_remove()
1204 terminate_dma(pl022); in pl022_dma_remove()
1205 if (pl022->dma_tx_channel) in pl022_dma_remove()
1206 dma_release_channel(pl022->dma_tx_channel); in pl022_dma_remove()
1207 if (pl022->dma_rx_channel) in pl022_dma_remove()
1208 dma_release_channel(pl022->dma_rx_channel); in pl022_dma_remove()
1209 kfree(pl022->dummypage); in pl022_dma_remove()
1213 static inline int configure_dma(struct pl022 *pl022) in configure_dma() argument
1218 static inline int pl022_dma_autoprobe(struct pl022 *pl022) in pl022_dma_autoprobe() argument
1223 static inline int pl022_dma_probe(struct pl022 *pl022) in pl022_dma_probe() argument
1228 static inline void pl022_dma_remove(struct pl022 *pl022) in pl022_dma_remove() argument
1248 struct pl022 *pl022 = dev_id; in pl022_interrupt_handler() local
1249 struct spi_message *msg = pl022->cur_msg; in pl022_interrupt_handler()
1253 dev_err(&pl022->adev->dev, in pl022_interrupt_handler()
1260 irq_status = readw(SSP_MIS(pl022->virtbase)); in pl022_interrupt_handler()
1275 dev_err(&pl022->adev->dev, "FIFO overrun\n"); in pl022_interrupt_handler()
1276 if (readw(SSP_SR(pl022->virtbase)) & SSP_SR_MASK_RFF) in pl022_interrupt_handler()
1277 dev_err(&pl022->adev->dev, in pl022_interrupt_handler()
1286 SSP_IMSC(pl022->virtbase)); in pl022_interrupt_handler()
1287 writew(CLEAR_ALL_INTERRUPTS, SSP_ICR(pl022->virtbase)); in pl022_interrupt_handler()
1288 writew((readw(SSP_CR1(pl022->virtbase)) & in pl022_interrupt_handler()
1289 (~SSP_CR1_MASK_SSE)), SSP_CR1(pl022->virtbase)); in pl022_interrupt_handler()
1293 tasklet_schedule(&pl022->pump_transfers); in pl022_interrupt_handler()
1297 readwriter(pl022); in pl022_interrupt_handler()
1299 if (pl022->tx == pl022->tx_end) { in pl022_interrupt_handler()
1301 writew((readw(SSP_IMSC(pl022->virtbase)) & in pl022_interrupt_handler()
1303 SSP_IMSC(pl022->virtbase)); in pl022_interrupt_handler()
1311 if (pl022->rx >= pl022->rx_end) { in pl022_interrupt_handler()
1313 SSP_IMSC(pl022->virtbase)); in pl022_interrupt_handler()
1314 writew(CLEAR_ALL_INTERRUPTS, SSP_ICR(pl022->virtbase)); in pl022_interrupt_handler()
1315 if (unlikely(pl022->rx > pl022->rx_end)) { in pl022_interrupt_handler()
1316 dev_warn(&pl022->adev->dev, "read %u surplus " in pl022_interrupt_handler()
1319 (u32) (pl022->rx - pl022->rx_end)); in pl022_interrupt_handler()
1322 msg->actual_length += pl022->cur_transfer->len; in pl022_interrupt_handler()
1324 msg->state = next_transfer(pl022); in pl022_interrupt_handler()
1325 if (msg->state != STATE_DONE && pl022->cur_transfer->cs_change) in pl022_interrupt_handler()
1326 pl022_cs_control(pl022, SSP_CHIP_DESELECT); in pl022_interrupt_handler()
1327 tasklet_schedule(&pl022->pump_transfers); in pl022_interrupt_handler()
1338 static int set_up_next_transfer(struct pl022 *pl022, in set_up_next_transfer() argument
1344 residue = pl022->cur_transfer->len % pl022->cur_chip->n_bytes; in set_up_next_transfer()
1346 dev_err(&pl022->adev->dev, in set_up_next_transfer()
1349 pl022->cur_transfer->len, in set_up_next_transfer()
1350 pl022->cur_chip->n_bytes); in set_up_next_transfer()
1351 dev_err(&pl022->adev->dev, "skipping this message\n"); in set_up_next_transfer()
1354 pl022->tx = (void *)transfer->tx_buf; in set_up_next_transfer()
1355 pl022->tx_end = pl022->tx + pl022->cur_transfer->len; in set_up_next_transfer()
1356 pl022->rx = (void *)transfer->rx_buf; in set_up_next_transfer()
1357 pl022->rx_end = pl022->rx + pl022->cur_transfer->len; in set_up_next_transfer()
1358 pl022->write = in set_up_next_transfer()
1359 pl022->tx ? pl022->cur_chip->write : WRITING_NULL; in set_up_next_transfer()
1360 pl022->read = pl022->rx ? pl022->cur_chip->read : READING_NULL; in set_up_next_transfer()
1372 struct pl022 *pl022 = (struct pl022 *) data; in pump_transfers() local
1378 message = pl022->cur_msg; in pump_transfers()
1379 transfer = pl022->cur_transfer; in pump_transfers()
1384 giveback(pl022); in pump_transfers()
1391 giveback(pl022); in pump_transfers()
1408 pl022_cs_control(pl022, SSP_CHIP_SELECT); in pump_transfers()
1414 if (set_up_next_transfer(pl022, transfer)) { in pump_transfers()
1417 giveback(pl022); in pump_transfers()
1421 flush(pl022); in pump_transfers()
1423 if (pl022->cur_chip->enable_dma) { in pump_transfers()
1424 if (configure_dma(pl022)) { in pump_transfers()
1425 dev_dbg(&pl022->adev->dev, in pump_transfers()
1434 writew(ENABLE_ALL_INTERRUPTS & ~SSP_IMSC_MASK_RXIM, SSP_IMSC(pl022->virtbase)); in pump_transfers()
1437 static void do_interrupt_dma_transfer(struct pl022 *pl022) in do_interrupt_dma_transfer() argument
1446 if (!pl022->next_msg_cs_active) in do_interrupt_dma_transfer()
1447 pl022_cs_control(pl022, SSP_CHIP_SELECT); in do_interrupt_dma_transfer()
1449 if (set_up_next_transfer(pl022, pl022->cur_transfer)) { in do_interrupt_dma_transfer()
1451 pl022->cur_msg->state = STATE_ERROR; in do_interrupt_dma_transfer()
1452 pl022->cur_msg->status = -EIO; in do_interrupt_dma_transfer()
1453 giveback(pl022); in do_interrupt_dma_transfer()
1457 if (pl022->cur_chip->enable_dma) { in do_interrupt_dma_transfer()
1459 if (configure_dma(pl022)) { in do_interrupt_dma_transfer()
1460 dev_dbg(&pl022->adev->dev, in do_interrupt_dma_transfer()
1469 writew((readw(SSP_CR1(pl022->virtbase)) | SSP_CR1_MASK_SSE), in do_interrupt_dma_transfer()
1470 SSP_CR1(pl022->virtbase)); in do_interrupt_dma_transfer()
1471 writew(irqflags, SSP_IMSC(pl022->virtbase)); in do_interrupt_dma_transfer()
1474 static void print_current_status(struct pl022 *pl022) in print_current_status() argument
1479 if (pl022->vendor->extended_cr) in print_current_status()
1480 read_cr0 = readl(SSP_CR0(pl022->virtbase)); in print_current_status()
1482 read_cr0 = readw(SSP_CR0(pl022->virtbase)); in print_current_status()
1483 read_cr1 = readw(SSP_CR1(pl022->virtbase)); in print_current_status()
1484 read_dmacr = readw(SSP_DMACR(pl022->virtbase)); in print_current_status()
1485 read_sr = readw(SSP_SR(pl022->virtbase)); in print_current_status()
1487 dev_warn(&pl022->adev->dev, "spi-pl022 CR0: %x\n", read_cr0); in print_current_status()
1488 dev_warn(&pl022->adev->dev, "spi-pl022 CR1: %x\n", read_cr1); in print_current_status()
1489 dev_warn(&pl022->adev->dev, "spi-pl022 DMACR: %x\n", read_dmacr); in print_current_status()
1490 dev_warn(&pl022->adev->dev, "spi-pl022 SR: %x\n", read_sr); in print_current_status()
1491 dev_warn(&pl022->adev->dev, in print_current_status()
1493 pl022->exp_fifo_level, in print_current_status()
1494 pl022->vendor->fifodepth); in print_current_status()
1498 static void do_polling_transfer(struct pl022 *pl022) in do_polling_transfer() argument
1505 message = pl022->cur_msg; in do_polling_transfer()
1511 transfer = pl022->cur_transfer; in do_polling_transfer()
1520 pl022_cs_control(pl022, SSP_CHIP_SELECT); in do_polling_transfer()
1524 if (!pl022->next_msg_cs_active) in do_polling_transfer()
1525 pl022_cs_control(pl022, SSP_CHIP_SELECT); in do_polling_transfer()
1529 if (set_up_next_transfer(pl022, transfer)) { in do_polling_transfer()
1535 flush(pl022); in do_polling_transfer()
1536 writew((readw(SSP_CR1(pl022->virtbase)) | SSP_CR1_MASK_SSE), in do_polling_transfer()
1537 SSP_CR1(pl022->virtbase)); in do_polling_transfer()
1539 dev_dbg(&pl022->adev->dev, "polling transfer ongoing ...\n"); in do_polling_transfer()
1542 while (pl022->tx < pl022->tx_end || pl022->rx < pl022->rx_end) { in do_polling_transfer()
1544 readwriter(pl022); in do_polling_transfer()
1546 dev_warn(&pl022->adev->dev, in do_polling_transfer()
1549 print_current_status(pl022); in do_polling_transfer()
1556 message->actual_length += pl022->cur_transfer->len; in do_polling_transfer()
1558 message->state = next_transfer(pl022); in do_polling_transfer()
1560 && pl022->cur_transfer->cs_change) in do_polling_transfer()
1561 pl022_cs_control(pl022, SSP_CHIP_DESELECT); in do_polling_transfer()
1572 giveback(pl022); in do_polling_transfer()
1579 struct pl022 *pl022 = spi_controller_get_devdata(host); in pl022_transfer_one_message() local
1582 pl022->cur_msg = msg; in pl022_transfer_one_message()
1585 pl022->cur_transfer = list_entry(msg->transfers.next, in pl022_transfer_one_message()
1589 pl022->cur_chip = spi_get_ctldata(msg->spi); in pl022_transfer_one_message()
1590 pl022->cur_cs = spi_get_chipselect(msg->spi, 0); in pl022_transfer_one_message()
1592 pl022->cur_gpiod = spi_get_csgpiod(msg->spi, 0); in pl022_transfer_one_message()
1594 restore_state(pl022); in pl022_transfer_one_message()
1595 flush(pl022); in pl022_transfer_one_message()
1597 if (pl022->cur_chip->xfer_type == POLLING_TRANSFER) in pl022_transfer_one_message()
1598 do_polling_transfer(pl022); in pl022_transfer_one_message()
1600 do_interrupt_dma_transfer(pl022); in pl022_transfer_one_message()
1607 struct pl022 *pl022 = spi_controller_get_devdata(host); in pl022_unprepare_transfer_hardware() local
1610 writew((readw(SSP_CR1(pl022->virtbase)) & in pl022_unprepare_transfer_hardware()
1611 (~SSP_CR1_MASK_SSE)), SSP_CR1(pl022->virtbase)); in pl022_unprepare_transfer_hardware()
1616 static int verify_controller_parameters(struct pl022 *pl022, in verify_controller_parameters() argument
1621 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1626 (!pl022->vendor->unidir)) { in verify_controller_parameters()
1627 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1634 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1641 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1652 if (pl022->vendor->fifodepth < 16) { in verify_controller_parameters()
1653 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1659 if (pl022->vendor->fifodepth < 32) { in verify_controller_parameters()
1660 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1666 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1677 if (pl022->vendor->fifodepth < 16) { in verify_controller_parameters()
1678 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1684 if (pl022->vendor->fifodepth < 32) { in verify_controller_parameters()
1685 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1691 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1698 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1704 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1709 if (pl022->vendor->extended_cr) { in verify_controller_parameters()
1714 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1720 dev_err(&pl022->adev->dev, in verify_controller_parameters()
1736 static int calculate_effective_freq(struct pl022 *pl022, int freq, struct in calculate_effective_freq() argument
1744 rate = clk_get_rate(pl022->clk); in calculate_effective_freq()
1751 dev_warn(&pl022->adev->dev, in calculate_effective_freq()
1756 dev_err(&pl022->adev->dev, in calculate_effective_freq()
1803 dev_dbg(&pl022->adev->dev, in calculate_effective_freq()
1806 dev_dbg(&pl022->adev->dev, "SSP cpsdvsr = %d, scr = %d\n", in calculate_effective_freq()
1847 struct pl022 *pl022 = spi_controller_get_devdata(spi->controller); in pl022_setup() local
1906 status = calculate_effective_freq(pl022, in pl022_setup()
1925 status = verify_controller_parameters(pl022, chip_info); in pl022_setup()
1931 pl022->rx_lev_trig = chip_info->rx_lev_trig; in pl022_setup()
1932 pl022->tx_lev_trig = chip_info->tx_lev_trig; in pl022_setup()
1938 if ((bits <= 3) || (bits > pl022->vendor->max_bpw)) { in pl022_setup()
1942 pl022->vendor->max_bpw); in pl022_setup()
1967 && ((pl022->host_info)->enable_dma)) { in pl022_setup()
1986 if (pl022->vendor->extended_cr) { in pl022_setup()
1989 if (pl022->vendor->pl023) { in pl022_setup()
2042 if (pl022->vendor->loopback) { in pl022_setup()
2107 struct pl022 *pl022 = NULL; /*Data for this driver */ in pl022_probe() local
2121 host = spi_alloc_host(dev, sizeof(struct pl022)); in pl022_probe()
2127 pl022 = spi_controller_get_devdata(host); in pl022_probe()
2128 pl022->host = host; in pl022_probe()
2129 pl022->host_info = platform_info; in pl022_probe()
2130 pl022->adev = adev; in pl022_probe()
2131 pl022->vendor = id->data; in pl022_probe()
2152 if (pl022->vendor->extended_cr) in pl022_probe()
2161 pl022->phybase = adev->res.start; in pl022_probe()
2162 pl022->virtbase = devm_ioremap(dev, adev->res.start, in pl022_probe()
2164 if (pl022->virtbase == NULL) { in pl022_probe()
2169 &adev->res.start, pl022->virtbase); in pl022_probe()
2171 pl022->clk = devm_clk_get(&adev->dev, NULL); in pl022_probe()
2172 if (IS_ERR(pl022->clk)) { in pl022_probe()
2173 status = PTR_ERR(pl022->clk); in pl022_probe()
2178 status = clk_prepare_enable(pl022->clk); in pl022_probe()
2185 tasklet_init(&pl022->pump_transfers, pump_transfers, in pl022_probe()
2186 (unsigned long)pl022); in pl022_probe()
2189 writew((readw(SSP_CR1(pl022->virtbase)) & (~SSP_CR1_MASK_SSE)), in pl022_probe()
2190 SSP_CR1(pl022->virtbase)); in pl022_probe()
2191 load_ssp_default_config(pl022); in pl022_probe()
2194 0, "pl022", pl022); in pl022_probe()
2201 status = pl022_dma_autoprobe(pl022); in pl022_probe()
2211 status = pl022_dma_probe(pl022); in pl022_probe()
2217 amba_set_drvdata(adev, pl022); in pl022_probe()
2241 pl022_dma_remove(pl022); in pl022_probe()
2243 clk_disable_unprepare(pl022->clk); in pl022_probe()
2256 struct pl022 *pl022 = amba_get_drvdata(adev); in pl022_remove() local
2258 if (!pl022) in pl022_remove()
2267 load_ssp_default_config(pl022); in pl022_remove()
2268 if (pl022->host_info->enable_dma) in pl022_remove()
2269 pl022_dma_remove(pl022); in pl022_remove()
2271 clk_disable_unprepare(pl022->clk); in pl022_remove()
2273 tasklet_disable(&pl022->pump_transfers); in pl022_remove()
2279 struct pl022 *pl022 = dev_get_drvdata(dev); in pl022_suspend() local
2282 ret = spi_controller_suspend(pl022->host); in pl022_suspend()
2288 spi_controller_resume(pl022->host); in pl022_suspend()
2300 struct pl022 *pl022 = dev_get_drvdata(dev); in pl022_resume() local
2308 ret = spi_controller_resume(pl022->host); in pl022_resume()
2319 struct pl022 *pl022 = dev_get_drvdata(dev); in pl022_runtime_suspend() local
2321 clk_disable_unprepare(pl022->clk); in pl022_runtime_suspend()
2329 struct pl022 *pl022 = dev_get_drvdata(dev); in pl022_runtime_resume() local
2332 clk_prepare_enable(pl022->clk); in pl022_runtime_resume()