Lines Matching refs:p
184 static u32 sh_msiof_read(struct sh_msiof_spi_priv *p, int reg_offs) in sh_msiof_read() argument
189 return ioread16(p->mapbase + reg_offs); in sh_msiof_read()
191 return ioread32(p->mapbase + reg_offs); in sh_msiof_read()
195 static void sh_msiof_write(struct sh_msiof_spi_priv *p, int reg_offs, in sh_msiof_write() argument
201 iowrite16(value, p->mapbase + reg_offs); in sh_msiof_write()
204 iowrite32(value, p->mapbase + reg_offs); in sh_msiof_write()
209 static int sh_msiof_modify_ctr_wait(struct sh_msiof_spi_priv *p, in sh_msiof_modify_ctr_wait() argument
216 data = sh_msiof_read(p, CTR); in sh_msiof_modify_ctr_wait()
219 sh_msiof_write(p, CTR, data); in sh_msiof_modify_ctr_wait()
222 if ((sh_msiof_read(p, CTR) & mask) == set) in sh_msiof_modify_ctr_wait()
233 struct sh_msiof_spi_priv *p = data; in sh_msiof_spi_irq() local
236 sh_msiof_write(p, IER, 0); in sh_msiof_spi_irq()
237 complete(&p->done); in sh_msiof_spi_irq()
254 static void sh_msiof_spi_set_clk_regs(struct sh_msiof_spi_priv *p, in sh_msiof_spi_set_clk_regs() argument
273 sh_msiof_write(p, TSCR, scr); in sh_msiof_spi_set_clk_regs()
274 if (!(p->chipdata->master_flags & SPI_MASTER_MUST_TX)) in sh_msiof_spi_set_clk_regs()
275 sh_msiof_write(p, RSCR, scr); in sh_msiof_spi_set_clk_regs()
295 static u32 sh_msiof_spi_get_dtdl_and_syncdl(struct sh_msiof_spi_priv *p) in sh_msiof_spi_get_dtdl_and_syncdl() argument
299 if (!p->info) in sh_msiof_spi_get_dtdl_and_syncdl()
303 if (p->info->dtdl > 200 || p->info->syncdl > 300) { in sh_msiof_spi_get_dtdl_and_syncdl()
304 dev_warn(&p->pdev->dev, "DTDL or SYNCDL is too large\n"); in sh_msiof_spi_get_dtdl_and_syncdl()
309 if ((p->info->dtdl + p->info->syncdl) % 100) { in sh_msiof_spi_get_dtdl_and_syncdl()
310 dev_warn(&p->pdev->dev, "the sum of DTDL/SYNCDL is not good\n"); in sh_msiof_spi_get_dtdl_and_syncdl()
314 val = sh_msiof_get_delay_bit(p->info->dtdl) << MDR1_DTDL_SHIFT; in sh_msiof_spi_get_dtdl_and_syncdl()
315 val |= sh_msiof_get_delay_bit(p->info->syncdl) << MDR1_SYNCDL_SHIFT; in sh_msiof_spi_get_dtdl_and_syncdl()
320 static void sh_msiof_spi_set_pin_regs(struct sh_msiof_spi_priv *p, in sh_msiof_spi_set_pin_regs() argument
337 tmp |= sh_msiof_spi_get_dtdl_and_syncdl(p); in sh_msiof_spi_set_pin_regs()
338 sh_msiof_write(p, TMDR1, tmp | MDR1_TRMD | TMDR1_PCON); in sh_msiof_spi_set_pin_regs()
339 if (p->chipdata->master_flags & SPI_MASTER_MUST_TX) { in sh_msiof_spi_set_pin_regs()
343 sh_msiof_write(p, RMDR1, tmp); in sh_msiof_spi_set_pin_regs()
354 sh_msiof_write(p, CTR, tmp); in sh_msiof_spi_set_pin_regs()
357 static void sh_msiof_spi_set_mode_regs(struct sh_msiof_spi_priv *p, in sh_msiof_spi_set_mode_regs() argument
363 if (tx_buf || (p->chipdata->master_flags & SPI_MASTER_MUST_TX)) in sh_msiof_spi_set_mode_regs()
364 sh_msiof_write(p, TMDR2, dr2); in sh_msiof_spi_set_mode_regs()
366 sh_msiof_write(p, TMDR2, dr2 | MDR2_GRPMASK1); in sh_msiof_spi_set_mode_regs()
369 sh_msiof_write(p, RMDR2, dr2); in sh_msiof_spi_set_mode_regs()
372 static void sh_msiof_reset_str(struct sh_msiof_spi_priv *p) in sh_msiof_reset_str() argument
374 sh_msiof_write(p, STR, sh_msiof_read(p, STR)); in sh_msiof_reset_str()
377 static void sh_msiof_spi_write_fifo_8(struct sh_msiof_spi_priv *p, in sh_msiof_spi_write_fifo_8() argument
384 sh_msiof_write(p, TFDR, buf_8[k] << fs); in sh_msiof_spi_write_fifo_8()
387 static void sh_msiof_spi_write_fifo_16(struct sh_msiof_spi_priv *p, in sh_msiof_spi_write_fifo_16() argument
394 sh_msiof_write(p, TFDR, buf_16[k] << fs); in sh_msiof_spi_write_fifo_16()
397 static void sh_msiof_spi_write_fifo_16u(struct sh_msiof_spi_priv *p, in sh_msiof_spi_write_fifo_16u() argument
404 sh_msiof_write(p, TFDR, get_unaligned(&buf_16[k]) << fs); in sh_msiof_spi_write_fifo_16u()
407 static void sh_msiof_spi_write_fifo_32(struct sh_msiof_spi_priv *p, in sh_msiof_spi_write_fifo_32() argument
414 sh_msiof_write(p, TFDR, buf_32[k] << fs); in sh_msiof_spi_write_fifo_32()
417 static void sh_msiof_spi_write_fifo_32u(struct sh_msiof_spi_priv *p, in sh_msiof_spi_write_fifo_32u() argument
424 sh_msiof_write(p, TFDR, get_unaligned(&buf_32[k]) << fs); in sh_msiof_spi_write_fifo_32u()
427 static void sh_msiof_spi_write_fifo_s32(struct sh_msiof_spi_priv *p, in sh_msiof_spi_write_fifo_s32() argument
434 sh_msiof_write(p, TFDR, swab32(buf_32[k] << fs)); in sh_msiof_spi_write_fifo_s32()
437 static void sh_msiof_spi_write_fifo_s32u(struct sh_msiof_spi_priv *p, in sh_msiof_spi_write_fifo_s32u() argument
444 sh_msiof_write(p, TFDR, swab32(get_unaligned(&buf_32[k]) << fs)); in sh_msiof_spi_write_fifo_s32u()
447 static void sh_msiof_spi_read_fifo_8(struct sh_msiof_spi_priv *p, in sh_msiof_spi_read_fifo_8() argument
454 buf_8[k] = sh_msiof_read(p, RFDR) >> fs; in sh_msiof_spi_read_fifo_8()
457 static void sh_msiof_spi_read_fifo_16(struct sh_msiof_spi_priv *p, in sh_msiof_spi_read_fifo_16() argument
464 buf_16[k] = sh_msiof_read(p, RFDR) >> fs; in sh_msiof_spi_read_fifo_16()
467 static void sh_msiof_spi_read_fifo_16u(struct sh_msiof_spi_priv *p, in sh_msiof_spi_read_fifo_16u() argument
474 put_unaligned(sh_msiof_read(p, RFDR) >> fs, &buf_16[k]); in sh_msiof_spi_read_fifo_16u()
477 static void sh_msiof_spi_read_fifo_32(struct sh_msiof_spi_priv *p, in sh_msiof_spi_read_fifo_32() argument
484 buf_32[k] = sh_msiof_read(p, RFDR) >> fs; in sh_msiof_spi_read_fifo_32()
487 static void sh_msiof_spi_read_fifo_32u(struct sh_msiof_spi_priv *p, in sh_msiof_spi_read_fifo_32u() argument
494 put_unaligned(sh_msiof_read(p, RFDR) >> fs, &buf_32[k]); in sh_msiof_spi_read_fifo_32u()
497 static void sh_msiof_spi_read_fifo_s32(struct sh_msiof_spi_priv *p, in sh_msiof_spi_read_fifo_s32() argument
504 buf_32[k] = swab32(sh_msiof_read(p, RFDR) >> fs); in sh_msiof_spi_read_fifo_s32()
507 static void sh_msiof_spi_read_fifo_s32u(struct sh_msiof_spi_priv *p, in sh_msiof_spi_read_fifo_s32u() argument
514 put_unaligned(swab32(sh_msiof_read(p, RFDR) >> fs), &buf_32[k]); in sh_msiof_spi_read_fifo_s32u()
520 struct sh_msiof_spi_priv *p = spi_master_get_devdata(spi->master); in sh_msiof_spi_setup() local
522 pm_runtime_get_sync(&p->pdev->dev); in sh_msiof_spi_setup()
533 sh_msiof_spi_set_pin_regs(p, !!(spi->mode & SPI_CPOL), in sh_msiof_spi_setup()
543 pm_runtime_put(&p->pdev->dev); in sh_msiof_spi_setup()
551 struct sh_msiof_spi_priv *p = spi_master_get_devdata(master); in sh_msiof_prepare_message() local
555 sh_msiof_spi_set_pin_regs(p, !!(spi->mode & SPI_CPOL), in sh_msiof_prepare_message()
563 static int sh_msiof_spi_start(struct sh_msiof_spi_priv *p, void *rx_buf) in sh_msiof_spi_start() argument
568 ret = sh_msiof_modify_ctr_wait(p, 0, CTR_TSCKE); in sh_msiof_spi_start()
570 ret = sh_msiof_modify_ctr_wait(p, 0, CTR_RXE); in sh_msiof_spi_start()
572 ret = sh_msiof_modify_ctr_wait(p, 0, CTR_TXE); in sh_msiof_spi_start()
576 ret = sh_msiof_modify_ctr_wait(p, 0, CTR_TFSE); in sh_msiof_spi_start()
581 static int sh_msiof_spi_stop(struct sh_msiof_spi_priv *p, void *rx_buf) in sh_msiof_spi_stop() argument
586 ret = sh_msiof_modify_ctr_wait(p, CTR_TFSE, 0); in sh_msiof_spi_stop()
588 ret = sh_msiof_modify_ctr_wait(p, CTR_TXE, 0); in sh_msiof_spi_stop()
590 ret = sh_msiof_modify_ctr_wait(p, CTR_RXE, 0); in sh_msiof_spi_stop()
592 ret = sh_msiof_modify_ctr_wait(p, CTR_TSCKE, 0); in sh_msiof_spi_stop()
597 static int sh_msiof_spi_txrx_once(struct sh_msiof_spi_priv *p, in sh_msiof_spi_txrx_once() argument
610 words = min_t(int, words, p->tx_fifo_size); in sh_msiof_spi_txrx_once()
612 words = min_t(int, words, p->rx_fifo_size); in sh_msiof_spi_txrx_once()
618 sh_msiof_write(p, FCTR, 0); in sh_msiof_spi_txrx_once()
621 sh_msiof_spi_set_mode_regs(p, tx_buf, rx_buf, bits, words); in sh_msiof_spi_txrx_once()
622 sh_msiof_write(p, IER, IER_TEOFE | IER_REOFE); in sh_msiof_spi_txrx_once()
626 tx_fifo(p, tx_buf, words, fifo_shift); in sh_msiof_spi_txrx_once()
628 reinit_completion(&p->done); in sh_msiof_spi_txrx_once()
630 ret = sh_msiof_spi_start(p, rx_buf); in sh_msiof_spi_txrx_once()
632 dev_err(&p->pdev->dev, "failed to start hardware\n"); in sh_msiof_spi_txrx_once()
637 if (!wait_for_completion_timeout(&p->done, HZ)) { in sh_msiof_spi_txrx_once()
638 dev_err(&p->pdev->dev, "PIO timeout\n"); in sh_msiof_spi_txrx_once()
645 rx_fifo(p, rx_buf, words, fifo_shift); in sh_msiof_spi_txrx_once()
648 sh_msiof_reset_str(p); in sh_msiof_spi_txrx_once()
650 ret = sh_msiof_spi_stop(p, rx_buf); in sh_msiof_spi_txrx_once()
652 dev_err(&p->pdev->dev, "failed to shut down hardware\n"); in sh_msiof_spi_txrx_once()
659 sh_msiof_reset_str(p); in sh_msiof_spi_txrx_once()
660 sh_msiof_spi_stop(p, rx_buf); in sh_msiof_spi_txrx_once()
662 sh_msiof_write(p, IER, 0); in sh_msiof_spi_txrx_once()
668 struct sh_msiof_spi_priv *p = arg; in sh_msiof_dma_complete() local
670 sh_msiof_write(p, IER, 0); in sh_msiof_dma_complete()
671 complete(&p->done); in sh_msiof_dma_complete()
674 static int sh_msiof_dma_once(struct sh_msiof_spi_priv *p, const void *tx, in sh_msiof_dma_once() argument
685 desc_rx = dmaengine_prep_slave_single(p->master->dma_rx, in sh_msiof_dma_once()
686 p->rx_dma_addr, len, DMA_FROM_DEVICE, in sh_msiof_dma_once()
692 desc_rx->callback_param = p; in sh_msiof_dma_once()
700 dma_sync_single_for_device(p->master->dma_tx->device->dev, in sh_msiof_dma_once()
701 p->tx_dma_addr, len, DMA_TO_DEVICE); in sh_msiof_dma_once()
702 desc_tx = dmaengine_prep_slave_single(p->master->dma_tx, in sh_msiof_dma_once()
703 p->tx_dma_addr, len, DMA_TO_DEVICE, in sh_msiof_dma_once()
715 desc_tx->callback_param = p; in sh_msiof_dma_once()
725 sh_msiof_write(p, FCTR, FCTR_TFWM_1 | FCTR_RFWM_1); in sh_msiof_dma_once()
728 sh_msiof_spi_set_mode_regs(p, tx, rx, 32, len / 4); in sh_msiof_dma_once()
730 sh_msiof_write(p, IER, ier_bits); in sh_msiof_dma_once()
732 reinit_completion(&p->done); in sh_msiof_dma_once()
736 dma_async_issue_pending(p->master->dma_rx); in sh_msiof_dma_once()
738 dma_async_issue_pending(p->master->dma_tx); in sh_msiof_dma_once()
740 ret = sh_msiof_spi_start(p, rx); in sh_msiof_dma_once()
742 dev_err(&p->pdev->dev, "failed to start hardware\n"); in sh_msiof_dma_once()
747 if (!wait_for_completion_timeout(&p->done, HZ)) { in sh_msiof_dma_once()
748 dev_err(&p->pdev->dev, "DMA timeout\n"); in sh_msiof_dma_once()
754 sh_msiof_reset_str(p); in sh_msiof_dma_once()
756 ret = sh_msiof_spi_stop(p, rx); in sh_msiof_dma_once()
758 dev_err(&p->pdev->dev, "failed to shut down hardware\n"); in sh_msiof_dma_once()
763 dma_sync_single_for_cpu(p->master->dma_rx->device->dev, in sh_msiof_dma_once()
764 p->rx_dma_addr, len, in sh_msiof_dma_once()
770 sh_msiof_reset_str(p); in sh_msiof_dma_once()
771 sh_msiof_spi_stop(p, rx); in sh_msiof_dma_once()
774 dmaengine_terminate_all(p->master->dma_tx); in sh_msiof_dma_once()
777 dmaengine_terminate_all(p->master->dma_rx); in sh_msiof_dma_once()
778 sh_msiof_write(p, IER, 0); in sh_msiof_dma_once()
829 struct sh_msiof_spi_priv *p = spi_master_get_devdata(master); in sh_msiof_transfer_one() local
844 sh_msiof_spi_set_clk_regs(p, clk_get_rate(p->clk), t->speed_hz); in sh_msiof_transfer_one()
854 l = min(len, p->tx_fifo_size * 4); in sh_msiof_transfer_one()
856 l = min(len, p->rx_fifo_size * 4); in sh_msiof_transfer_one()
871 copy32(p->tx_dma_page, tx_buf, l / 4); in sh_msiof_transfer_one()
873 ret = sh_msiof_dma_once(p, tx_buf, rx_buf, l); in sh_msiof_transfer_one()
876 dev_driver_string(&p->pdev->dev), in sh_msiof_transfer_one()
877 dev_name(&p->pdev->dev)); in sh_msiof_transfer_one()
884 copy32(rx_buf, p->rx_dma_page, l / 4); in sh_msiof_transfer_one()
946 n = sh_msiof_spi_txrx_once(p, tx_fifo, rx_fifo, tx_buf, rx_buf, in sh_msiof_transfer_one()
1055 static int sh_msiof_request_dma(struct sh_msiof_spi_priv *p) in sh_msiof_request_dma() argument
1057 struct platform_device *pdev = p->pdev; in sh_msiof_request_dma()
1082 master = p->master; in sh_msiof_request_dma()
1095 p->tx_dma_page = (void *)__get_free_page(GFP_KERNEL | GFP_DMA); in sh_msiof_request_dma()
1096 if (!p->tx_dma_page) in sh_msiof_request_dma()
1099 p->rx_dma_page = (void *)__get_free_page(GFP_KERNEL | GFP_DMA); in sh_msiof_request_dma()
1100 if (!p->rx_dma_page) in sh_msiof_request_dma()
1104 p->tx_dma_addr = dma_map_single(tx_dev, p->tx_dma_page, PAGE_SIZE, in sh_msiof_request_dma()
1106 if (dma_mapping_error(tx_dev, p->tx_dma_addr)) in sh_msiof_request_dma()
1110 p->rx_dma_addr = dma_map_single(rx_dev, p->rx_dma_page, PAGE_SIZE, in sh_msiof_request_dma()
1112 if (dma_mapping_error(rx_dev, p->rx_dma_addr)) in sh_msiof_request_dma()
1119 dma_unmap_single(tx_dev, p->tx_dma_addr, PAGE_SIZE, DMA_TO_DEVICE); in sh_msiof_request_dma()
1121 free_page((unsigned long)p->rx_dma_page); in sh_msiof_request_dma()
1123 free_page((unsigned long)p->tx_dma_page); in sh_msiof_request_dma()
1132 static void sh_msiof_release_dma(struct sh_msiof_spi_priv *p) in sh_msiof_release_dma() argument
1134 struct spi_master *master = p->master; in sh_msiof_release_dma()
1140 dev = &p->pdev->dev; in sh_msiof_release_dma()
1141 dma_unmap_single(master->dma_rx->device->dev, p->rx_dma_addr, in sh_msiof_release_dma()
1143 dma_unmap_single(master->dma_tx->device->dev, p->tx_dma_addr, in sh_msiof_release_dma()
1145 free_page((unsigned long)p->rx_dma_page); in sh_msiof_release_dma()
1146 free_page((unsigned long)p->tx_dma_page); in sh_msiof_release_dma()
1156 struct sh_msiof_spi_priv *p; in sh_msiof_spi_probe() local
1166 p = spi_master_get_devdata(master); in sh_msiof_spi_probe()
1168 platform_set_drvdata(pdev, p); in sh_msiof_spi_probe()
1169 p->master = master; in sh_msiof_spi_probe()
1173 p->chipdata = of_id->data; in sh_msiof_spi_probe()
1174 p->info = sh_msiof_spi_parse_dt(&pdev->dev); in sh_msiof_spi_probe()
1176 p->chipdata = (const void *)pdev->id_entry->driver_data; in sh_msiof_spi_probe()
1177 p->info = dev_get_platdata(&pdev->dev); in sh_msiof_spi_probe()
1180 if (!p->info) { in sh_msiof_spi_probe()
1186 init_completion(&p->done); in sh_msiof_spi_probe()
1188 p->clk = devm_clk_get(&pdev->dev, NULL); in sh_msiof_spi_probe()
1189 if (IS_ERR(p->clk)) { in sh_msiof_spi_probe()
1191 ret = PTR_ERR(p->clk); in sh_msiof_spi_probe()
1203 p->mapbase = devm_ioremap_resource(&pdev->dev, r); in sh_msiof_spi_probe()
1204 if (IS_ERR(p->mapbase)) { in sh_msiof_spi_probe()
1205 ret = PTR_ERR(p->mapbase); in sh_msiof_spi_probe()
1210 dev_name(&pdev->dev), p); in sh_msiof_spi_probe()
1216 p->pdev = pdev; in sh_msiof_spi_probe()
1220 p->tx_fifo_size = p->chipdata->tx_fifo_size; in sh_msiof_spi_probe()
1221 p->rx_fifo_size = p->chipdata->rx_fifo_size; in sh_msiof_spi_probe()
1222 if (p->info->tx_fifo_override) in sh_msiof_spi_probe()
1223 p->tx_fifo_size = p->info->tx_fifo_override; in sh_msiof_spi_probe()
1224 if (p->info->rx_fifo_override) in sh_msiof_spi_probe()
1225 p->rx_fifo_size = p->info->rx_fifo_override; in sh_msiof_spi_probe()
1230 master->flags = p->chipdata->master_flags; in sh_msiof_spi_probe()
1233 master->num_chipselect = p->info->num_chipselect; in sh_msiof_spi_probe()
1240 ret = sh_msiof_request_dma(p); in sh_msiof_spi_probe()
1253 sh_msiof_release_dma(p); in sh_msiof_spi_probe()
1262 struct sh_msiof_spi_priv *p = platform_get_drvdata(pdev); in sh_msiof_spi_remove() local
1264 sh_msiof_release_dma(p); in sh_msiof_spi_remove()