diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index b189508ccf92..4b931ec8d90b 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -580,7 +580,7 @@ config SPI_SIRF config SPI_ST_SSC4 tristate "STMicroelectronics SPI SSC-based driver" - depends on ARCH_STI + depends on ARCH_STI || COMPILE_TEST help STMicroelectronics SoCs support for SPI. If you say yes to this option, support will be included for the SSC driven SPI. @@ -667,7 +667,7 @@ config SPI_XILINX config SPI_XLP tristate "Netlogic XLP SPI controller driver" - depends on CPU_XLP || COMPILE_TEST + depends on CPU_XLP || ARCH_VULCAN || COMPILE_TEST help Enable support for the SPI controller on the Netlogic XLP SoCs. Currently supported XLP variants are XLP8XX, XLP3XX, XLP2XX, XLP9XX diff --git a/drivers/spi/spi-pxa2xx-dma.c b/drivers/spi/spi-pxa2xx-dma.c index 365fc22c3572..a18a03d0afb7 100644 --- a/drivers/spi/spi-pxa2xx-dma.c +++ b/drivers/spi/spi-pxa2xx-dma.c @@ -33,12 +33,10 @@ static int pxa2xx_spi_map_dma_buffer(struct driver_data *drv_data, dmadev = drv_data->tx_chan->device->dev; sgt = &drv_data->tx_sgt; buf = drv_data->tx; - drv_data->tx_map_len = len; } else { dmadev = drv_data->rx_chan->device->dev; sgt = &drv_data->rx_sgt; buf = drv_data->rx; - drv_data->rx_map_len = len; } nents = DIV_ROUND_UP(len, SZ_2K); @@ -55,11 +53,7 @@ static int pxa2xx_spi_map_dma_buffer(struct driver_data *drv_data, for_each_sg(sgt->sgl, sg, sgt->nents, i) { size_t bytes = min_t(size_t, len, SZ_2K); - if (buf) - sg_set_buf(sg, pbuf, bytes); - else - sg_set_buf(sg, drv_data->dummy, bytes); - + sg_set_buf(sg, pbuf, bytes); pbuf += bytes; len -= bytes; } @@ -133,9 +127,6 @@ static void pxa2xx_spi_dma_transfer_complete(struct driver_data *drv_data, if (!error) { pxa2xx_spi_unmap_dma_buffers(drv_data); - drv_data->tx += drv_data->tx_map_len; - drv_data->rx += drv_data->rx_map_len; - msg->actual_length += drv_data->len; msg->state = pxa2xx_spi_next_transfer(drv_data); } else { @@ -267,19 +258,22 @@ irqreturn_t pxa2xx_spi_dma_transfer(struct driver_data *drv_data) int pxa2xx_spi_dma_prepare(struct driver_data *drv_data, u32 dma_burst) { struct dma_async_tx_descriptor *tx_desc, *rx_desc; + int err = 0; tx_desc = pxa2xx_spi_dma_prepare_one(drv_data, DMA_MEM_TO_DEV); if (!tx_desc) { dev_err(&drv_data->pdev->dev, "failed to get DMA TX descriptor\n"); - return -EBUSY; + err = -EBUSY; + goto err_tx; } rx_desc = pxa2xx_spi_dma_prepare_one(drv_data, DMA_DEV_TO_MEM); if (!rx_desc) { dev_err(&drv_data->pdev->dev, "failed to get DMA RX descriptor\n"); - return -EBUSY; + err = -EBUSY; + goto err_rx; } /* We are ready when RX completes */ @@ -289,6 +283,12 @@ int pxa2xx_spi_dma_prepare(struct driver_data *drv_data, u32 dma_burst) dmaengine_submit(rx_desc); dmaengine_submit(tx_desc); return 0; + +err_rx: + dmaengine_terminate_async(drv_data->tx_chan); +err_tx: + pxa2xx_spi_unmap_dma_buffers(drv_data); + return err; } void pxa2xx_spi_dma_start(struct driver_data *drv_data) @@ -308,10 +308,6 @@ int pxa2xx_spi_dma_setup(struct driver_data *drv_data) dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); - drv_data->dummy = devm_kzalloc(dev, SZ_2K, GFP_KERNEL); - if (!drv_data->dummy) - return -ENOMEM; - drv_data->tx_chan = dma_request_slave_channel_compat(mask, pdata->dma_filter, pdata->tx_param, dev, "tx"); if (!drv_data->tx_chan) diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-pci.c index 520ed1dd5780..83706aeb39b2 100644 --- a/drivers/spi/spi-pxa2xx-pci.c +++ b/drivers/spi/spi-pxa2xx-pci.c @@ -173,8 +173,8 @@ static int pxa2xx_spi_pci_probe(struct pci_dev *dev, ssp->type = c->type; snprintf(buf, sizeof(buf), "pxa2xx-spi.%d", ssp->port_id); - ssp->clk = clk_register_fixed_rate(&dev->dev, buf , NULL, - CLK_IS_ROOT, c->max_clk_rate); + ssp->clk = clk_register_fixed_rate(&dev->dev, buf , NULL, 0, + c->max_clk_rate); if (IS_ERR(ssp->clk)) return PTR_ERR(ssp->clk); diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index dbcc036877c8..fe07c0592b44 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -570,9 +570,8 @@ static void giveback(struct driver_data *drv_data) /* see if the next and current messages point * to the same chip */ - if (next_msg && next_msg->spi != msg->spi) - next_msg = NULL; - if (!next_msg || msg->state == ERROR_STATE) + if ((next_msg && next_msg->spi != msg->spi) || + msg->state == ERROR_STATE) cs_deassert(drv_data); } @@ -928,6 +927,7 @@ static void pump_transfers(unsigned long data) u32 dma_thresh = drv_data->cur_chip->dma_threshold; u32 dma_burst = drv_data->cur_chip->dma_burst_size; u32 change_mask = pxa2xx_spi_get_ssrc1_change_mask(drv_data); + int err; /* Get current state information */ message = drv_data->cur_msg; @@ -1047,7 +1047,12 @@ static void pump_transfers(unsigned long data) /* Ensure we have the correct interrupt handler */ drv_data->transfer_handler = pxa2xx_spi_dma_transfer; - pxa2xx_spi_dma_prepare(drv_data, dma_burst); + err = pxa2xx_spi_dma_prepare(drv_data, dma_burst); + if (err) { + message->status = err; + giveback(drv_data); + return; + } /* Clear status and start DMA engine */ cr1 = chip->cr1 | dma_thresh | drv_data->dma_cr1; @@ -1555,6 +1560,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) master->unprepare_transfer_hardware = pxa2xx_spi_unprepare_transfer; master->fw_translate_cs = pxa2xx_spi_fw_translate_cs; master->auto_runtime_pm = true; + master->flags = SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX; drv_data->ssp_type = ssp->type; diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h index a1ef88948144..e6b09000ff14 100644 --- a/drivers/spi/spi-pxa2xx.h +++ b/drivers/spi/spi-pxa2xx.h @@ -56,7 +56,6 @@ struct driver_data { struct sg_table tx_sgt; int rx_nents; int tx_nents; - void *dummy; atomic_t dma_running; /* Current message transfer state info */ @@ -69,8 +68,6 @@ struct driver_data { void *rx; void *rx_end; int dma_mapped; - size_t rx_map_len; - size_t tx_map_len; u8 n_bytes; int (*write)(struct driver_data *drv_data); int (*read)(struct driver_data *drv_data); diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c index 810a7fae3479..c338ef1136f6 100644 --- a/drivers/spi/spi-qup.c +++ b/drivers/spi/spi-qup.c @@ -937,6 +937,10 @@ static int spi_qup_pm_suspend_runtime(struct device *device) config = readl(controller->base + QUP_CONFIG); config |= QUP_CONFIG_CLOCK_AUTO_GATE; writel_relaxed(config, controller->base + QUP_CONFIG); + + clk_disable_unprepare(controller->cclk); + clk_disable_unprepare(controller->iclk); + return 0; } @@ -945,6 +949,15 @@ static int spi_qup_pm_resume_runtime(struct device *device) struct spi_master *master = dev_get_drvdata(device); struct spi_qup *controller = spi_master_get_devdata(master); u32 config; + int ret; + + ret = clk_prepare_enable(controller->iclk); + if (ret) + return ret; + + ret = clk_prepare_enable(controller->cclk); + if (ret) + return ret; /* Disable clocks auto gaiting */ config = readl_relaxed(controller->base + QUP_CONFIG); @@ -1017,6 +1030,8 @@ static int spi_qup_remove(struct platform_device *pdev) pm_runtime_put_noidle(&pdev->dev); pm_runtime_disable(&pdev->dev); + spi_master_put(master); + return 0; } diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index 6c6c0013ec7a..cd89682065b9 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -744,10 +744,8 @@ static int rockchip_spi_probe(struct platform_device *pdev) rs->dma_rx.ch = dma_request_chan(rs->dev, "rx"); if (IS_ERR(rs->dma_rx.ch)) { if (PTR_ERR(rs->dma_rx.ch) == -EPROBE_DEFER) { - dma_release_channel(rs->dma_tx.ch); - rs->dma_tx.ch = NULL; ret = -EPROBE_DEFER; - goto err_get_fifo_len; + goto err_free_dma_tx; } dev_warn(rs->dev, "Failed to request RX DMA channel\n"); rs->dma_rx.ch = NULL; @@ -775,10 +773,11 @@ static int rockchip_spi_probe(struct platform_device *pdev) err_register_master: pm_runtime_disable(&pdev->dev); - if (rs->dma_tx.ch) - dma_release_channel(rs->dma_tx.ch); if (rs->dma_rx.ch) dma_release_channel(rs->dma_rx.ch); +err_free_dma_tx: + if (rs->dma_tx.ch) + dma_release_channel(rs->dma_tx.ch); err_get_fifo_len: clk_disable_unprepare(rs->spiclk); err_spiclk_enable: diff --git a/drivers/spi/spi-st-ssc4.c b/drivers/spi/spi-st-ssc4.c index f17c0abe299f..d5adf9f31602 100644 --- a/drivers/spi/spi-st-ssc4.c +++ b/drivers/spi/spi-st-ssc4.c @@ -345,12 +345,13 @@ static int spi_st_probe(struct platform_device *pdev) spi_st->clk = devm_clk_get(&pdev->dev, "ssc"); if (IS_ERR(spi_st->clk)) { dev_err(&pdev->dev, "Unable to request clock\n"); - return PTR_ERR(spi_st->clk); + ret = PTR_ERR(spi_st->clk); + goto put_master; } ret = spi_st_clk_enable(spi_st); if (ret) - return ret; + goto put_master; init_completion(&spi_st->done); @@ -408,7 +409,8 @@ static int spi_st_probe(struct platform_device *pdev) clk_disable: spi_st_clk_disable(spi_st); - +put_master: + spi_master_put(master); return ret; }