Lines Matching full:mcspi
3 * OMAP2 McSPI controller driver
30 #include <linux/platform_data/spi-omap2-mcspi.h>
147 struct omap2_mcspi *mcspi = spi_master_get_devdata(master); in mcspi_write_reg() local
149 writel_relaxed(val, mcspi->base + idx); in mcspi_write_reg()
154 struct omap2_mcspi *mcspi = spi_master_get_devdata(master); in mcspi_read_reg() local
156 return readl_relaxed(mcspi->base + idx); in mcspi_read_reg()
238 struct omap2_mcspi *mcspi = spi_master_get_devdata(spi->master); in omap2_mcspi_set_cs() local
249 int err = pm_runtime_get_sync(mcspi->dev); in omap2_mcspi_set_cs()
251 pm_runtime_put_noidle(mcspi->dev); in omap2_mcspi_set_cs()
252 dev_err(mcspi->dev, "failed to get sync: %d\n", err); in omap2_mcspi_set_cs()
265 pm_runtime_mark_last_busy(mcspi->dev); in omap2_mcspi_set_cs()
266 pm_runtime_put_autosuspend(mcspi->dev); in omap2_mcspi_set_cs()
272 struct omap2_mcspi *mcspi = spi_master_get_devdata(master); in omap2_mcspi_set_mode() local
273 struct omap2_mcspi_regs *ctx = &mcspi->ctx; in omap2_mcspi_set_mode()
297 struct omap2_mcspi *mcspi; in omap2_mcspi_set_fifo() local
302 mcspi = spi_master_get_devdata(master); in omap2_mcspi_set_fifo()
332 mcspi->fifo_depth = max_fifo_depth; in omap2_mcspi_set_fifo()
345 mcspi->fifo_depth = 0; in omap2_mcspi_set_fifo()
365 static int mcspi_wait_for_completion(struct omap2_mcspi *mcspi, in mcspi_wait_for_completion() argument
368 if (spi_controller_is_slave(mcspi->master)) { in mcspi_wait_for_completion()
370 mcspi->slave_aborted) in mcspi_wait_for_completion()
382 struct omap2_mcspi *mcspi = spi_master_get_devdata(spi->master); in omap2_mcspi_rx_callback() local
383 struct omap2_mcspi_dma *mcspi_dma = &mcspi->dma_channels[spi->chip_select]; in omap2_mcspi_rx_callback()
394 struct omap2_mcspi *mcspi = spi_master_get_devdata(spi->master); in omap2_mcspi_tx_callback() local
395 struct omap2_mcspi_dma *mcspi_dma = &mcspi->dma_channels[spi->chip_select]; in omap2_mcspi_tx_callback()
407 struct omap2_mcspi *mcspi; in omap2_mcspi_tx_dma() local
411 mcspi = spi_master_get_devdata(spi->master); in omap2_mcspi_tx_dma()
412 mcspi_dma = &mcspi->dma_channels[spi->chip_select]; in omap2_mcspi_tx_dma()
436 struct omap2_mcspi *mcspi; in omap2_mcspi_rx_dma() local
449 mcspi = spi_master_get_devdata(spi->master); in omap2_mcspi_rx_dma()
450 mcspi_dma = &mcspi->dma_channels[spi->chip_select]; in omap2_mcspi_rx_dma()
458 if (mcspi->fifo_depth == 0) in omap2_mcspi_rx_dma()
475 * Reduce DMA transfer length by one more if McSPI is in omap2_mcspi_rx_dma()
478 if ((l & OMAP2_MCSPI_CHCONF_TURBO) && mcspi->fifo_depth == 0) in omap2_mcspi_rx_dma()
517 ret = mcspi_wait_for_completion(mcspi, &mcspi_dma->dma_rx_completion); in omap2_mcspi_rx_dma()
518 if (ret || mcspi->slave_aborted) { in omap2_mcspi_rx_dma()
527 if (mcspi->fifo_depth > 0) in omap2_mcspi_rx_dma()
581 struct omap2_mcspi *mcspi; in omap2_mcspi_txrx_dma() local
594 mcspi = spi_master_get_devdata(spi->master); in omap2_mcspi_txrx_dma()
595 mcspi_dma = &mcspi->dma_channels[spi->chip_select]; in omap2_mcspi_txrx_dma()
621 mcspi->slave_aborted = false; in omap2_mcspi_txrx_dma()
624 reinit_completion(&mcspi->txdone); in omap2_mcspi_txrx_dma()
640 ret = mcspi_wait_for_completion(mcspi, &mcspi_dma->dma_tx_completion); in omap2_mcspi_txrx_dma()
641 if (ret || mcspi->slave_aborted) { in omap2_mcspi_txrx_dma()
647 if (spi_controller_is_slave(mcspi->master)) { in omap2_mcspi_txrx_dma()
648 ret = mcspi_wait_for_completion(mcspi, &mcspi->txdone); in omap2_mcspi_txrx_dma()
649 if (ret || mcspi->slave_aborted) in omap2_mcspi_txrx_dma()
653 if (mcspi->fifo_depth > 0) { in omap2_mcspi_txrx_dma()
654 irqstat_reg = mcspi->base + OMAP2_MCSPI_IRQSTATUS; in omap2_mcspi_txrx_dma()
660 mcspi_write_reg(mcspi->master, OMAP2_MCSPI_IRQSTATUS, in omap2_mcspi_txrx_dma()
667 if (mcspi->fifo_depth > 0) { in omap2_mcspi_txrx_dma()
894 struct omap2_mcspi *mcspi; in omap2_mcspi_setup_transfer() local
899 mcspi = spi_master_get_devdata(spi->master); in omap2_mcspi_setup_transfer()
927 if (mcspi->pin_dir == MCSPI_PINDIR_D0_IN_D1_OUT) { in omap2_mcspi_setup_transfer()
986 static int omap2_mcspi_request_dma(struct omap2_mcspi *mcspi, in omap2_mcspi_request_dma() argument
991 mcspi_dma->dma_rx = dma_request_chan(mcspi->dev, in omap2_mcspi_request_dma()
999 mcspi_dma->dma_tx = dma_request_chan(mcspi->dev, in omap2_mcspi_request_dma()
1017 struct omap2_mcspi *mcspi = spi_master_get_devdata(master); in omap2_mcspi_release_dma() local
1022 mcspi_dma = &mcspi->dma_channels[i]; in omap2_mcspi_release_dma()
1052 struct omap2_mcspi *mcspi = spi_master_get_devdata(spi->master); in omap2_mcspi_setup() local
1053 struct omap2_mcspi_regs *ctx = &mcspi->ctx; in omap2_mcspi_setup()
1060 cs->base = mcspi->base + spi->chip_select * 0x14; in omap2_mcspi_setup()
1061 cs->phys = mcspi->phys + spi->chip_select * 0x14; in omap2_mcspi_setup()
1071 ret = pm_runtime_get_sync(mcspi->dev); in omap2_mcspi_setup()
1073 pm_runtime_put_noidle(mcspi->dev); in omap2_mcspi_setup()
1084 pm_runtime_mark_last_busy(mcspi->dev); in omap2_mcspi_setup()
1085 pm_runtime_put_autosuspend(mcspi->dev); in omap2_mcspi_setup()
1092 struct omap2_mcspi *mcspi = data; in omap2_mcspi_irq_handler() local
1095 irqstat = mcspi_read_reg(mcspi->master, OMAP2_MCSPI_IRQSTATUS); in omap2_mcspi_irq_handler()
1100 mcspi_write_reg(mcspi->master, OMAP2_MCSPI_IRQENABLE, 0); in omap2_mcspi_irq_handler()
1102 complete(&mcspi->txdone); in omap2_mcspi_irq_handler()
1109 struct omap2_mcspi *mcspi = spi_master_get_devdata(master); in omap2_mcspi_slave_abort() local
1110 struct omap2_mcspi_dma *mcspi_dma = mcspi->dma_channels; in omap2_mcspi_slave_abort()
1112 mcspi->slave_aborted = true; in omap2_mcspi_slave_abort()
1115 complete(&mcspi->txdone); in omap2_mcspi_slave_abort()
1132 struct omap2_mcspi *mcspi; in omap2_mcspi_transfer_one() local
1140 mcspi = spi_master_get_devdata(master); in omap2_mcspi_transfer_one()
1141 mcspi_dma = mcspi->dma_channels + spi->chip_select; in omap2_mcspi_transfer_one()
1172 chconf = mcspi->ctx.modulctrl; in omap2_mcspi_transfer_one()
1175 mcspi->ctx.modulctrl = in omap2_mcspi_transfer_one()
1226 if (mcspi->fifo_depth > 0) in omap2_mcspi_transfer_one()
1237 chconf = mcspi->ctx.modulctrl; in omap2_mcspi_transfer_one()
1240 mcspi->ctx.modulctrl = in omap2_mcspi_transfer_one()
1249 if (mcspi->fifo_depth > 0 && t) in omap2_mcspi_transfer_one()
1258 struct omap2_mcspi *mcspi = spi_master_get_devdata(master); in omap2_mcspi_prepare_message() local
1259 struct omap2_mcspi_regs *ctx = &mcspi->ctx; in omap2_mcspi_prepare_message()
1286 struct omap2_mcspi *mcspi = spi_master_get_devdata(spi->master); in omap2_mcspi_can_dma() local
1288 &mcspi->dma_channels[spi->chip_select]; in omap2_mcspi_can_dma()
1304 struct omap2_mcspi *mcspi = spi_master_get_devdata(spi->master); in omap2_mcspi_max_xfer_size() local
1306 &mcspi->dma_channels[spi->chip_select]; in omap2_mcspi_max_xfer_size()
1308 if (mcspi->max_xfer_len && mcspi_dma->dma_rx) in omap2_mcspi_max_xfer_size()
1309 return mcspi->max_xfer_len; in omap2_mcspi_max_xfer_size()
1314 static int omap2_mcspi_controller_setup(struct omap2_mcspi *mcspi) in omap2_mcspi_controller_setup() argument
1316 struct spi_master *master = mcspi->master; in omap2_mcspi_controller_setup()
1317 struct omap2_mcspi_regs *ctx = &mcspi->ctx; in omap2_mcspi_controller_setup()
1320 ret = pm_runtime_get_sync(mcspi->dev); in omap2_mcspi_controller_setup()
1322 pm_runtime_put_noidle(mcspi->dev); in omap2_mcspi_controller_setup()
1332 pm_runtime_mark_last_busy(mcspi->dev); in omap2_mcspi_controller_setup()
1333 pm_runtime_put_autosuspend(mcspi->dev); in omap2_mcspi_controller_setup()
1356 struct omap2_mcspi *mcspi = spi_master_get_devdata(master); in omap_mcspi_runtime_resume() local
1357 struct omap2_mcspi_regs *ctx = &mcspi->ctx; in omap_mcspi_runtime_resume()
1365 /* McSPI: context restore */ in omap_mcspi_runtime_resume()
1405 .compatible = "ti,omap2-mcspi",
1409 .compatible = "ti,omap4-mcspi",
1413 .compatible = "ti,am654-mcspi",
1424 struct omap2_mcspi *mcspi; in omap2_mcspi_probe() local
1432 master = spi_alloc_slave(&pdev->dev, sizeof(*mcspi)); in omap2_mcspi_probe()
1434 master = spi_alloc_master(&pdev->dev, sizeof(*mcspi)); in omap2_mcspi_probe()
1456 mcspi = spi_master_get_devdata(master); in omap2_mcspi_probe()
1457 mcspi->master = master; in omap2_mcspi_probe()
1467 mcspi->pin_dir = MCSPI_PINDIR_D0_OUT_D1_IN; in omap2_mcspi_probe()
1471 mcspi->pin_dir = pdata->pin_dir; in omap2_mcspi_probe()
1475 mcspi->max_xfer_len = pdata->max_xfer_len; in omap2_mcspi_probe()
1480 mcspi->base = devm_ioremap_resource(&pdev->dev, r); in omap2_mcspi_probe()
1481 if (IS_ERR(mcspi->base)) { in omap2_mcspi_probe()
1482 status = PTR_ERR(mcspi->base); in omap2_mcspi_probe()
1485 mcspi->phys = r->start + regs_offset; in omap2_mcspi_probe()
1486 mcspi->base += regs_offset; in omap2_mcspi_probe()
1488 mcspi->dev = &pdev->dev; in omap2_mcspi_probe()
1490 INIT_LIST_HEAD(&mcspi->ctx.cs); in omap2_mcspi_probe()
1492 mcspi->dma_channels = devm_kcalloc(&pdev->dev, master->num_chipselect, in omap2_mcspi_probe()
1495 if (mcspi->dma_channels == NULL) { in omap2_mcspi_probe()
1501 sprintf(mcspi->dma_channels[i].dma_rx_ch_name, "rx%d", i); in omap2_mcspi_probe()
1502 sprintf(mcspi->dma_channels[i].dma_tx_ch_name, "tx%d", i); in omap2_mcspi_probe()
1504 status = omap2_mcspi_request_dma(mcspi, in omap2_mcspi_probe()
1505 &mcspi->dma_channels[i]); in omap2_mcspi_probe()
1517 init_completion(&mcspi->txdone); in omap2_mcspi_probe()
1520 mcspi); in omap2_mcspi_probe()
1530 status = omap2_mcspi_controller_setup(mcspi); in omap2_mcspi_probe()
1553 struct omap2_mcspi *mcspi = spi_master_get_devdata(master); in omap2_mcspi_remove() local
1557 pm_runtime_dont_use_autosuspend(mcspi->dev); in omap2_mcspi_remove()
1558 pm_runtime_put_sync(mcspi->dev); in omap2_mcspi_remove()
1570 struct omap2_mcspi *mcspi = spi_master_get_devdata(master); in omap2_mcspi_suspend() local
1575 dev_warn(mcspi->dev, "%s: failed to set pins: %i\n", in omap2_mcspi_suspend()
1580 dev_warn(mcspi->dev, "%s: master suspend failed: %i\n", in omap2_mcspi_suspend()
1589 struct omap2_mcspi *mcspi = spi_master_get_devdata(master); in omap2_mcspi_resume() local
1594 dev_warn(mcspi->dev, "%s: master resume failed: %i\n", in omap2_mcspi_resume()