diff options
| -rw-r--r-- | drivers/spi/Kconfig | 12 | ||||
| -rw-r--r-- | drivers/spi/atmel-quadspi.c | 8 | ||||
| -rw-r--r-- | drivers/spi/spi-coldfire-qspi.c | 4 | ||||
| -rw-r--r-- | drivers/spi/spi-fsl-qspi.c | 2 | ||||
| -rw-r--r-- | drivers/spi/spi-orion.c | 2 | ||||
| -rw-r--r-- | drivers/spi/spi.c | 26 | ||||
| -rw-r--r-- | include/linux/spi/spi.h | 4 |
7 files changed, 35 insertions, 23 deletions
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index fd64c865f6ef..c11c6c5cb442 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -103,7 +103,7 @@ config SPI_AT91_USART config SPI_ATMEL_QUADSPI tristate "Atmel Quad SPI Controller" - depends on ARCH_AT91 || (ARM && COMPILE_TEST && !ARCH_EBSA110) + depends on ARCH_AT91 || COMPILE_TEST depends on OF && HAS_IOMEM help This enables support for the Quad SPI controller in master mode. @@ -169,7 +169,7 @@ config SPI_BCM_QSPI help Enables support for the Broadcom SPI flash and MSPI controller. Select this option for any one of BRCMSTB, iProc NSP and NS2 SoCs - based platforms. This driver works for both SPI master for spi-nor + based platforms. This driver works for both SPI master for SPI NOR flash device as well as MSPI device. config SPI_BITBANG @@ -311,11 +311,11 @@ config SPI_FSL_QUADSPI supports the high-level SPI memory interface. config SPI_HISI_SFC_V3XX - tristate "HiSilicon SPI-NOR Flash Controller for Hi16XX chipsets" + tristate "HiSilicon SPI NOR Flash Controller for Hi16XX chipsets" depends on (ARM64 && ACPI) || COMPILE_TEST depends on HAS_IOMEM help - This enables support for HiSilicon v3xx SPI-NOR flash controller + This enables support for HiSilicon v3xx SPI NOR flash controller found in hi16xx chipsets. config SPI_NXP_FLEXSPI @@ -477,9 +477,9 @@ config SPI_MTK_NOR depends on ARCH_MEDIATEK || COMPILE_TEST help This enables support for SPI NOR controller found on MediaTek - ARM SoCs. This is a controller specifically for SPI-NOR flash. + ARM SoCs. This is a controller specifically for SPI NOR flash. It can perform generic SPI transfers up to 6 bytes via generic - SPI interface as well as several SPI-NOR specific instructions + SPI interface as well as several SPI NOR specific instructions via SPI MEM interface. config SPI_NPCM_FIU diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c index a898755fb41e..8c009c175f2c 100644 --- a/drivers/spi/atmel-quadspi.c +++ b/drivers/spi/atmel-quadspi.c @@ -430,11 +430,11 @@ static int atmel_qspi_exec_op(struct spi_mem *mem, const struct spi_mem_op *op) /* Send/Receive data */ if (op->data.dir == SPI_MEM_DATA_IN) - _memcpy_fromio(op->data.buf.in, aq->mem + offset, - op->data.nbytes); + memcpy_fromio(op->data.buf.in, aq->mem + offset, + op->data.nbytes); else - _memcpy_toio(aq->mem + offset, op->data.buf.out, - op->data.nbytes); + memcpy_toio(aq->mem + offset, op->data.buf.out, + op->data.nbytes); /* Release the chip-select */ atmel_qspi_write(QSPI_CR_LASTXFER, aq, QSPI_CR); diff --git a/drivers/spi/spi-coldfire-qspi.c b/drivers/spi/spi-coldfire-qspi.c index f80e06c87fbe..8996115ce736 100644 --- a/drivers/spi/spi-coldfire-qspi.c +++ b/drivers/spi/spi-coldfire-qspi.c @@ -387,7 +387,7 @@ static int mcfqspi_probe(struct platform_device *pdev) status = PTR_ERR(mcfqspi->clk); goto fail0; } - clk_enable(mcfqspi->clk); + clk_prepare_enable(mcfqspi->clk); master->bus_num = pdata->bus_num; master->num_chipselect = pdata->num_chipselect; @@ -425,7 +425,7 @@ fail2: pm_runtime_disable(&pdev->dev); mcfqspi_cs_teardown(mcfqspi); fail1: - clk_disable(mcfqspi->clk); + clk_disable_unprepare(mcfqspi->clk); fail0: spi_master_put(master); diff --git a/drivers/spi/spi-fsl-qspi.c b/drivers/spi/spi-fsl-qspi.c index 6766262d7e75..9851551ebbe0 100644 --- a/drivers/spi/spi-fsl-qspi.c +++ b/drivers/spi/spi-fsl-qspi.c @@ -15,7 +15,7 @@ * Yogesh Gaur <[email protected]> * Suresh Gupta <[email protected]> * - * Based on the original fsl-quadspi.c spi-nor driver: + * Based on the original fsl-quadspi.c SPI NOR driver: * Author: Freescale Semiconductor, Inc. * */ diff --git a/drivers/spi/spi-orion.c b/drivers/spi/spi-orion.c index 43f73db22f21..b57b8b3cc26e 100644 --- a/drivers/spi/spi-orion.c +++ b/drivers/spi/spi-orion.c @@ -708,7 +708,7 @@ static int orion_spi_probe(struct platform_device *pdev) /* * Only map one page for direct access. This is enough for the * simple TX transfer which only writes to the first word. - * This needs to get extended for the direct SPI-NOR / SPI-NAND + * This needs to get extended for the direct SPI NOR / SPI NAND * support, once this gets implemented. */ dir_acc = &spi->child[cs].direct_access; diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 1d7bba434225..0b260484b4f5 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1336,6 +1336,14 @@ void spi_finalize_current_transfer(struct spi_controller *ctlr) } EXPORT_SYMBOL_GPL(spi_finalize_current_transfer); +static void spi_idle_runtime_pm(struct spi_controller *ctlr) +{ + if (ctlr->auto_runtime_pm) { + pm_runtime_mark_last_busy(ctlr->dev.parent); + pm_runtime_put_autosuspend(ctlr->dev.parent); + } +} + /** * __spi_pump_messages - function which processes spi message queue * @ctlr: controller to process queue for @@ -1380,10 +1388,17 @@ static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread) return; } - /* Only do teardown in the thread */ + /* Defer any non-atomic teardown to the thread */ if (!in_kthread) { - kthread_queue_work(ctlr->kworker, - &ctlr->pump_messages); + if (!ctlr->dummy_rx && !ctlr->dummy_tx && + !ctlr->unprepare_transfer_hardware) { + spi_idle_runtime_pm(ctlr); + ctlr->busy = false; + trace_spi_controller_idle(ctlr); + } else { + kthread_queue_work(ctlr->kworker, + &ctlr->pump_messages); + } spin_unlock_irqrestore(&ctlr->queue_lock, flags); return; } @@ -1400,10 +1415,7 @@ static void __spi_pump_messages(struct spi_controller *ctlr, bool in_kthread) ctlr->unprepare_transfer_hardware(ctlr)) dev_err(&ctlr->dev, "failed to unprepare transfer hardware\n"); - if (ctlr->auto_runtime_pm) { - pm_runtime_mark_last_busy(ctlr->dev.parent); - pm_runtime_put_autosuspend(ctlr->dev.parent); - } + spi_idle_runtime_pm(ctlr); trace_spi_controller_idle(ctlr); spin_lock_irqsave(&ctlr->queue_lock, flags); diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 5fcf5da13fdb..f8b721fcd5c6 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -971,7 +971,7 @@ struct spi_transfer { * each represented by a struct spi_transfer. The sequence is "atomic" * in the sense that no other spi_message may use that SPI bus until that * sequence completes. On some systems, many such sequences can execute as - * as single programmed DMA transfer. On all systems, these messages are + * a single programmed DMA transfer. On all systems, these messages are * queued, and might complete after transactions to other devices. Messages * sent to a given spi_device are always executed in FIFO order. * @@ -1234,7 +1234,7 @@ extern int spi_bus_unlock(struct spi_controller *ctlr); * * For more specific semantics see spi_sync(). * - * Return: Return: zero on success, else a negative error code. + * Return: zero on success, else a negative error code. */ static inline int spi_sync_transfer(struct spi_device *spi, struct spi_transfer *xfers, |