diff options
| -rw-r--r-- | drivers/spi/spi-fsl-lpspi.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c index a4a42e85e132..85a5c952389a 100644 --- a/drivers/spi/spi-fsl-lpspi.c +++ b/drivers/spi/spi-fsl-lpspi.c @@ -98,6 +98,7 @@ struct fsl_lpspi_data { struct clk *clk_ipg; struct clk *clk_per; bool is_slave; + bool is_only_cs1; bool is_first_byte; void *rx_buf; @@ -119,8 +120,6 @@ struct fsl_lpspi_data { bool usedma; struct completion dma_rx_completion; struct completion dma_tx_completion; - - int chipselect[]; }; static const struct of_device_id fsl_lpspi_dt_ids[] = { @@ -259,10 +258,9 @@ static void fsl_lpspi_set_cmd(struct fsl_lpspi_data *fsl_lpspi) temp |= fsl_lpspi->config.bpw - 1; temp |= (fsl_lpspi->config.mode & 0x3) << 30; + temp |= (fsl_lpspi->config.chip_select & 0x3) << 24; if (!fsl_lpspi->is_slave) { temp |= fsl_lpspi->config.prescale << 27; - temp |= (fsl_lpspi->config.chip_select & 0x3) << 24; - /* * Set TCR_CONT will keep SS asserted after current transfer. * For the first transfer, clear TCR_CONTC to assert SS. @@ -423,7 +421,10 @@ static int fsl_lpspi_setup_transfer(struct spi_controller *controller, fsl_lpspi->config.mode = spi->mode; fsl_lpspi->config.bpw = t->bits_per_word; fsl_lpspi->config.speed_hz = t->speed_hz; - fsl_lpspi->config.chip_select = spi->chip_select; + if (fsl_lpspi->is_only_cs1) + fsl_lpspi->config.chip_select = 1; + else + fsl_lpspi->config.chip_select = spi->chip_select; if (!fsl_lpspi->config.speed_hz) fsl_lpspi->config.speed_hz = spi->max_speed_hz; @@ -837,6 +838,8 @@ static int fsl_lpspi_probe(struct platform_device *pdev) fsl_lpspi = spi_controller_get_devdata(controller); fsl_lpspi->dev = &pdev->dev; fsl_lpspi->is_slave = is_slave; + fsl_lpspi->is_only_cs1 = of_property_read_bool((&pdev->dev)->of_node, + "fsl,spi-only-use-cs1-sel"); controller->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 32); controller->transfer_one = fsl_lpspi_transfer_one; @@ -850,12 +853,6 @@ static int fsl_lpspi_probe(struct platform_device *pdev) if (!fsl_lpspi->is_slave) controller->use_gpio_descriptors = true; - ret = devm_spi_register_controller(&pdev->dev, controller); - if (ret < 0) { - dev_err(&pdev->dev, "spi_register_controller error.\n"); - goto out_controller_put; - } - init_completion(&fsl_lpspi->xfer_done); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -913,6 +910,12 @@ static int fsl_lpspi_probe(struct platform_device *pdev) if (ret < 0) dev_err(&pdev->dev, "dma setup error %d, use pio\n", ret); + ret = devm_spi_register_controller(&pdev->dev, controller); + if (ret < 0) { + dev_err(&pdev->dev, "spi_register_controller error.\n"); + goto out_pm_get; + } + pm_runtime_mark_last_busy(fsl_lpspi->dev); pm_runtime_put_autosuspend(fsl_lpspi->dev); |