Merge remote-tracking branches 'spi/topic/overlay', 'spi/topic/pxa2xx', 'spi/topic/s3c64xx', 'spi/topic/sh-msiof' and 'spi/topic/spidev' into spi-next
Mark Brown
commit
4f9530705b
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@ -1,4 +1,4 @@
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subdir-y := accounting auxdisplay blackfin connector \
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filesystems filesystems ia64 laptops mic misc-devices \
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networking pcmcia prctl ptp spi timers vDSO video4linux \
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networking pcmcia prctl ptp timers vDSO video4linux \
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watchdog
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@ -10,6 +10,7 @@ Required properties:
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"renesas,msiof-r8a7792" (R-Car V2H)
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"renesas,msiof-r8a7793" (R-Car M2-N)
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"renesas,msiof-r8a7794" (R-Car E2)
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"renesas,msiof-sh73a0" (SH-Mobile AG5)
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- reg : A list of offsets and lengths of the register sets for
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the device.
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If only one register set is present, it is to be used
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@ -10,13 +10,9 @@ pxa2xx
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- PXA2xx SPI master controller build by spi_message fifo wq
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spidev
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- Intro to the userspace API for spi devices
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spidev_fdx.c
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- spidev example file
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spi-lm70llp
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- Connecting an LM70-LLP sensor to the kernel via the SPI subsys.
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spi-sc18is602
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- NXP SC18IS602/603 I2C-bus to SPI bridge
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spi-summary
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- (Linux) SPI overview. If unsure about SPI or SPI in Linux, start here.
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spidev_test.c
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- SPI testing utility.
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@ -1,8 +0,0 @@
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# List of programs to build
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hostprogs-y := spidev_test spidev_fdx
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# Tell kbuild to always build the programs
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always := $(hostprogs-y)
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HOSTCFLAGS_spidev_test.o += -I$(objtree)/usr/include
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HOSTCFLAGS_spidev_fdx.o += -I$(objtree)/usr/include
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@ -1100,9 +1100,7 @@ struct platform_device s3c_device_wdt = {
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#ifdef CONFIG_S3C64XX_DEV_SPI0
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static struct resource s3c64xx_spi0_resource[] = {
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[0] = DEFINE_RES_MEM(S3C_PA_SPI0, SZ_256),
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[1] = DEFINE_RES_DMA(DMACH_SPI0_TX),
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[2] = DEFINE_RES_DMA(DMACH_SPI0_RX),
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[3] = DEFINE_RES_IRQ(IRQ_SPI0),
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[1] = DEFINE_RES_IRQ(IRQ_SPI0),
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};
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struct platform_device s3c64xx_device_spi0 = {
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@ -1130,6 +1128,8 @@ void __init s3c64xx_spi0_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
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pd.num_cs = num_cs;
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pd.src_clk_nr = src_clk_nr;
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pd.cfg_gpio = (cfg_gpio) ? cfg_gpio : s3c64xx_spi0_cfg_gpio;
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pd.dma_tx = (void *)DMACH_SPI0_TX;
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pd.dma_rx = (void *)DMACH_SPI0_RX;
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#if defined(CONFIG_PL330_DMA)
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pd.filter = pl330_filter;
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#elif defined(CONFIG_S3C64XX_PL080)
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@ -1145,9 +1145,7 @@ void __init s3c64xx_spi0_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
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#ifdef CONFIG_S3C64XX_DEV_SPI1
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static struct resource s3c64xx_spi1_resource[] = {
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[0] = DEFINE_RES_MEM(S3C_PA_SPI1, SZ_256),
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[1] = DEFINE_RES_DMA(DMACH_SPI1_TX),
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[2] = DEFINE_RES_DMA(DMACH_SPI1_RX),
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[3] = DEFINE_RES_IRQ(IRQ_SPI1),
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[1] = DEFINE_RES_IRQ(IRQ_SPI1),
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};
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struct platform_device s3c64xx_device_spi1 = {
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@ -1175,12 +1173,15 @@ void __init s3c64xx_spi1_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
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pd.num_cs = num_cs;
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pd.src_clk_nr = src_clk_nr;
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pd.cfg_gpio = (cfg_gpio) ? cfg_gpio : s3c64xx_spi1_cfg_gpio;
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pd.dma_tx = (void *)DMACH_SPI1_TX;
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pd.dma_rx = (void *)DMACH_SPI1_RX;
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#if defined(CONFIG_PL330_DMA)
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pd.filter = pl330_filter;
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#elif defined(CONFIG_S3C64XX_PL080)
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pd.filter = pl08x_filter_id;
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#endif
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s3c_set_platdata(&pd, sizeof(pd), &s3c64xx_device_spi1);
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}
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#endif /* CONFIG_S3C64XX_DEV_SPI1 */
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@ -1188,9 +1189,7 @@ void __init s3c64xx_spi1_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
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#ifdef CONFIG_S3C64XX_DEV_SPI2
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static struct resource s3c64xx_spi2_resource[] = {
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[0] = DEFINE_RES_MEM(S3C_PA_SPI2, SZ_256),
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[1] = DEFINE_RES_DMA(DMACH_SPI2_TX),
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[2] = DEFINE_RES_DMA(DMACH_SPI2_RX),
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[3] = DEFINE_RES_IRQ(IRQ_SPI2),
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[1] = DEFINE_RES_IRQ(IRQ_SPI2),
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};
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struct platform_device s3c64xx_device_spi2 = {
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@ -1218,6 +1217,8 @@ void __init s3c64xx_spi2_set_platdata(int (*cfg_gpio)(void), int src_clk_nr,
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pd.num_cs = num_cs;
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pd.src_clk_nr = src_clk_nr;
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pd.cfg_gpio = (cfg_gpio) ? cfg_gpio : s3c64xx_spi2_cfg_gpio;
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pd.dma_tx = (void *)DMACH_SPI2_TX;
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pd.dma_rx = (void *)DMACH_SPI2_RX;
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#if defined(CONFIG_PL330_DMA)
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pd.filter = pl330_filter;
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#elif defined(CONFIG_S3C64XX_PL080)
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@ -1567,9 +1567,6 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
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if (!is_quark_x1000_ssp(drv_data))
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pxa2xx_spi_write(drv_data, SSPSP, 0);
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if (is_lpss_ssp(drv_data))
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lpss_ssp_setup(drv_data);
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if (is_lpss_ssp(drv_data)) {
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lpss_ssp_setup(drv_data);
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config = lpss_get_config(drv_data);
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@ -133,7 +133,6 @@
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struct s3c64xx_spi_dma_data {
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struct dma_chan *ch;
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enum dma_transfer_direction direction;
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unsigned int dmach;
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};
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/**
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@ -325,7 +324,7 @@ static int s3c64xx_spi_prepare_transfer(struct spi_master *spi)
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/* Acquire DMA channels */
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sdd->rx_dma.ch = dma_request_slave_channel_compat(mask, filter,
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(void *)(long)sdd->rx_dma.dmach, dev, "rx");
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sdd->cntrlr_info->dma_rx, dev, "rx");
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if (!sdd->rx_dma.ch) {
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dev_err(dev, "Failed to get RX DMA channel\n");
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ret = -EBUSY;
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@ -334,7 +333,7 @@ static int s3c64xx_spi_prepare_transfer(struct spi_master *spi)
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spi->dma_rx = sdd->rx_dma.ch;
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sdd->tx_dma.ch = dma_request_slave_channel_compat(mask, filter,
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(void *)(long)sdd->tx_dma.dmach, dev, "tx");
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sdd->cntrlr_info->dma_tx, dev, "tx");
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if (!sdd->tx_dma.ch) {
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dev_err(dev, "Failed to get TX DMA channel\n");
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ret = -EBUSY;
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@ -1028,7 +1027,6 @@ static inline struct s3c64xx_spi_port_config *s3c64xx_spi_get_port_config(
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static int s3c64xx_spi_probe(struct platform_device *pdev)
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{
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struct resource *mem_res;
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struct resource *res;
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struct s3c64xx_spi_driver_data *sdd;
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struct s3c64xx_spi_info *sci = dev_get_platdata(&pdev->dev);
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struct spi_master *master;
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@ -1087,20 +1085,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
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sdd->cur_bpw = 8;
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if (!sdd->pdev->dev.of_node) {
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res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
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if (!res) {
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dev_warn(&pdev->dev, "Unable to get SPI tx dma resource. Switching to poll mode\n");
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sdd->port_conf->quirks = S3C64XX_SPI_QUIRK_POLL;
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} else
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sdd->tx_dma.dmach = res->start;
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res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
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if (!res) {
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dev_warn(&pdev->dev, "Unable to get SPI rx dma resource. Switching to poll mode\n");
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sdd->port_conf->quirks = S3C64XX_SPI_QUIRK_POLL;
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} else
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sdd->rx_dma.dmach = res->start;
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if (!sdd->pdev->dev.of_node && (!sci->dma_tx || !sci->dma_rx)) {
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dev_warn(&pdev->dev, "Unable to get SPI tx/rx DMA data. Switching to poll mode\n");
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sdd->port_conf->quirks = S3C64XX_SPI_QUIRK_POLL;
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}
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sdd->tx_dma.direction = DMA_MEM_TO_DEV;
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@ -1197,9 +1184,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev)
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dev_dbg(&pdev->dev, "Samsung SoC SPI Driver loaded for Bus SPI-%d with %d Slaves attached\n",
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sdd->port_id, master->num_chipselect);
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dev_dbg(&pdev->dev, "\tIOmem=[%pR]\tFIFO %dbytes\tDMA=[Rx-%d, Tx-%d]\n",
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dev_dbg(&pdev->dev, "\tIOmem=[%pR]\tFIFO %dbytes\tDMA=[Rx-%p, Tx-%p]\n",
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mem_res, (FIFO_LVL_MASK(sdd) >> 1) + 1,
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sdd->rx_dma.dmach, sdd->tx_dma.dmach);
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sci->dma_rx, sci->dma_tx);
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pm_runtime_mark_last_busy(&pdev->dev);
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pm_runtime_put_autosuspend(&pdev->dev);
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@ -1370,12 +1357,6 @@ static const struct platform_device_id s3c64xx_spi_driver_ids[] = {
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}, {
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.name = "s3c6410-spi",
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.driver_data = (kernel_ulong_t)&s3c6410_spi_port_config,
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}, {
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.name = "s5pv210-spi",
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.driver_data = (kernel_ulong_t)&s5pv210_spi_port_config,
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}, {
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.name = "exynos4210-spi",
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.driver_data = (kernel_ulong_t)&exynos4_spi_port_config,
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},
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{ },
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};
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@ -604,6 +604,24 @@ struct spi_device *spi_new_device(struct spi_master *master,
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}
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EXPORT_SYMBOL_GPL(spi_new_device);
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/**
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* spi_unregister_device - unregister a single SPI device
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* @spi: spi_device to unregister
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*
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* Start making the passed SPI device vanish. Normally this would be handled
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* by spi_unregister_master().
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*/
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void spi_unregister_device(struct spi_device *spi)
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{
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if (!spi)
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return;
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if (spi->dev.of_node)
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of_node_clear_flag(spi->dev.of_node, OF_POPULATED);
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device_unregister(&spi->dev);
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}
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EXPORT_SYMBOL_GPL(spi_unregister_device);
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static void spi_match_master_to_boardinfo(struct spi_master *master,
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struct spi_board_info *bi)
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{
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@ -1547,6 +1565,8 @@ static void of_register_spi_devices(struct spi_master *master)
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return;
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for_each_available_child_of_node(master->dev.of_node, nc) {
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if (of_node_test_and_set_flag(nc, OF_POPULATED))
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continue;
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spi = of_register_spi_device(master, nc);
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if (IS_ERR(spi))
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dev_warn(&master->dev, "Failed to create SPI device for %s\n",
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@ -2632,6 +2652,11 @@ static int of_spi_notify(struct notifier_block *nb, unsigned long action,
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if (master == NULL)
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return NOTIFY_OK; /* not for us */
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if (of_node_test_and_set_flag(rd->dn, OF_POPULATED)) {
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put_device(&master->dev);
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return NOTIFY_OK;
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}
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spi = of_register_spi_device(master, rd->dn);
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put_device(&master->dev);
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@ -2643,6 +2668,10 @@ static int of_spi_notify(struct notifier_block *nb, unsigned long action,
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break;
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case OF_RECONFIG_CHANGE_REMOVE:
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/* already depopulated? */
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if (!of_node_check_flag(rd->dn, OF_POPULATED))
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return NOTIFY_OK;
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/* find our device by node */
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spi = of_find_spi_device_by_node(rd->dn);
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if (spi == NULL)
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@ -284,7 +284,7 @@ static int spidev_message(struct spidev_data *spidev,
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k_tmp->speed_hz = spidev->speed_hz;
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#ifdef VERBOSE
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dev_dbg(&spidev->spi->dev,
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" xfer len %zd %s%s%s%dbits %u usec %uHz\n",
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" xfer len %u %s%s%s%dbits %u usec %uHz\n",
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u_tmp->len,
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u_tmp->rx_buf ? "rx " : "",
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u_tmp->tx_buf ? "tx " : "",
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@ -40,6 +40,8 @@ struct s3c64xx_spi_info {
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int num_cs;
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int (*cfg_gpio)(void);
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dma_filter_fn filter;
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void *dma_tx;
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void *dma_rx;
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};
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/**
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|
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@ -1135,12 +1135,7 @@ spi_add_device(struct spi_device *spi);
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extern struct spi_device *
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spi_new_device(struct spi_master *, struct spi_board_info *);
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|
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static inline void
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spi_unregister_device(struct spi_device *spi)
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{
|
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if (spi)
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device_unregister(&spi->dev);
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}
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extern void spi_unregister_device(struct spi_device *spi);
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|
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extern const struct spi_device_id *
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spi_get_device_id(const struct spi_device *sdev);
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|
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@ -17,6 +17,7 @@ help:
|
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@echo ' lguest - a minimal 32-bit x86 hypervisor'
|
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@echo ' perf - Linux performance measurement and analysis tool'
|
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@echo ' selftests - various kernel selftests'
|
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@echo ' spi - spi tools'
|
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@echo ' turbostat - Intel CPU idle stats and freq reporting tool'
|
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@echo ' usb - USB testing tools'
|
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@echo ' virtio - vhost test module'
|
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|
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@ -52,7 +53,7 @@ acpi: FORCE
|
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cpupower: FORCE
|
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$(call descend,power/$@)
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|
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cgroup firewire hv guest usb virtio vm net iio: FORCE
|
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cgroup firewire hv guest spi usb virtio vm net iio: FORCE
|
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$(call descend,$@)
|
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|
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liblockdep: FORCE
|
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|
|
@ -118,7 +119,7 @@ acpi_clean:
|
|||
cpupower_clean:
|
||||
$(call descend,power/cpupower,clean)
|
||||
|
||||
cgroup_clean hv_clean firewire_clean lguest_clean usb_clean virtio_clean vm_clean net_clean iio_clean:
|
||||
cgroup_clean hv_clean firewire_clean lguest_clean spi_clean usb_clean virtio_clean vm_clean net_clean iio_clean:
|
||||
$(call descend,$(@:_clean=),clean)
|
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|
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liblockdep_clean:
|
||||
|
|
@ -143,7 +144,7 @@ freefall_clean:
|
|||
$(call descend,laptop/freefall,clean)
|
||||
|
||||
clean: acpi_clean cgroup_clean cpupower_clean hv_clean firewire_clean lguest_clean \
|
||||
perf_clean selftests_clean turbostat_clean usb_clean virtio_clean \
|
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perf_clean selftests_clean turbostat_clean spi_clean usb_clean virtio_clean \
|
||||
vm_clean net_clean iio_clean x86_energy_perf_policy_clean tmon_clean \
|
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freefall_clean
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,4 @@
|
|||
all: spidev_test spidev_fdx
|
||||
|
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clean:
|
||||
$(RM) spidev_test spidev_fdx
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|
|
@ -19,6 +19,7 @@
|
|||
#include <getopt.h>
|
||||
#include <fcntl.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <sys/stat.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/spi/spidev.h>
|
||||
|
||||
|
|
@ -33,6 +34,8 @@ static void pabort(const char *s)
|
|||
static const char *device = "/dev/spidev1.1";
|
||||
static uint32_t mode;
|
||||
static uint8_t bits = 8;
|
||||
static char *input_file;
|
||||
static char *output_file;
|
||||
static uint32_t speed = 500000;
|
||||
static uint16_t delay;
|
||||
static int verbose;
|
||||
|
|
@ -49,7 +52,8 @@ uint8_t default_tx[] = {
|
|||
uint8_t default_rx[ARRAY_SIZE(default_tx)] = {0, };
|
||||
char *input_tx;
|
||||
|
||||
static void hex_dump(const void *src, size_t length, size_t line_size, char *prefix)
|
||||
static void hex_dump(const void *src, size_t length, size_t line_size,
|
||||
char *prefix)
|
||||
{
|
||||
int i = 0;
|
||||
const unsigned char *address = src;
|
||||
|
|
@ -83,13 +87,17 @@ static void hex_dump(const void *src, size_t length, size_t line_size, char *pre
|
|||
static int unescape(char *_dst, char *_src, size_t len)
|
||||
{
|
||||
int ret = 0;
|
||||
int match;
|
||||
char *src = _src;
|
||||
char *dst = _dst;
|
||||
unsigned int ch;
|
||||
|
||||
while (*src) {
|
||||
if (*src == '\\' && *(src+1) == 'x') {
|
||||
sscanf(src + 2, "%2x", &ch);
|
||||
match = sscanf(src + 2, "%2x", &ch);
|
||||
if (!match)
|
||||
pabort("malformed input string");
|
||||
|
||||
src += 4;
|
||||
*dst++ = (unsigned char)ch;
|
||||
} else {
|
||||
|
|
@ -103,7 +111,7 @@ static int unescape(char *_dst, char *_src, size_t len)
|
|||
static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len)
|
||||
{
|
||||
int ret;
|
||||
|
||||
int out_fd;
|
||||
struct spi_ioc_transfer tr = {
|
||||
.tx_buf = (unsigned long)tx,
|
||||
.rx_buf = (unsigned long)rx,
|
||||
|
|
@ -134,7 +142,21 @@ static void transfer(int fd, uint8_t const *tx, uint8_t const *rx, size_t len)
|
|||
|
||||
if (verbose)
|
||||
hex_dump(tx, len, 32, "TX");
|
||||
hex_dump(rx, len, 32, "RX");
|
||||
|
||||
if (output_file) {
|
||||
out_fd = open(output_file, O_WRONLY | O_CREAT | O_TRUNC, 0666);
|
||||
if (out_fd < 0)
|
||||
pabort("could not open output file");
|
||||
|
||||
ret = write(out_fd, rx, len);
|
||||
if (ret != len)
|
||||
pabort("not all bytes written to output file");
|
||||
|
||||
close(out_fd);
|
||||
}
|
||||
|
||||
if (verbose || !output_file)
|
||||
hex_dump(rx, len, 32, "RX");
|
||||
}
|
||||
|
||||
static void print_usage(const char *prog)
|
||||
|
|
@ -143,7 +165,9 @@ static void print_usage(const char *prog)
|
|||
puts(" -D --device device to use (default /dev/spidev1.1)\n"
|
||||
" -s --speed max speed (Hz)\n"
|
||||
" -d --delay delay (usec)\n"
|
||||
" -b --bpw bits per word \n"
|
||||
" -b --bpw bits per word\n"
|
||||
" -i --input input data from a file (e.g. \"test.bin\")\n"
|
||||
" -o --output output data to a file (e.g. \"results.bin\")\n"
|
||||
" -l --loop loopback\n"
|
||||
" -H --cpha clock phase\n"
|
||||
" -O --cpol clock polarity\n"
|
||||
|
|
@ -167,6 +191,8 @@ static void parse_opts(int argc, char *argv[])
|
|||
{ "speed", 1, 0, 's' },
|
||||
{ "delay", 1, 0, 'd' },
|
||||
{ "bpw", 1, 0, 'b' },
|
||||
{ "input", 1, 0, 'i' },
|
||||
{ "output", 1, 0, 'o' },
|
||||
{ "loop", 0, 0, 'l' },
|
||||
{ "cpha", 0, 0, 'H' },
|
||||
{ "cpol", 0, 0, 'O' },
|
||||
|
|
@ -182,7 +208,8 @@ static void parse_opts(int argc, char *argv[])
|
|||
};
|
||||
int c;
|
||||
|
||||
c = getopt_long(argc, argv, "D:s:d:b:lHOLC3NR24p:v", lopts, NULL);
|
||||
c = getopt_long(argc, argv, "D:s:d:b:i:o:lHOLC3NR24p:v",
|
||||
lopts, NULL);
|
||||
|
||||
if (c == -1)
|
||||
break;
|
||||
|
|
@ -200,6 +227,12 @@ static void parse_opts(int argc, char *argv[])
|
|||
case 'b':
|
||||
bits = atoi(optarg);
|
||||
break;
|
||||
case 'i':
|
||||
input_file = optarg;
|
||||
break;
|
||||
case 'o':
|
||||
output_file = optarg;
|
||||
break;
|
||||
case 'l':
|
||||
mode |= SPI_LOOP;
|
||||
break;
|
||||
|
|
@ -249,13 +282,63 @@ static void parse_opts(int argc, char *argv[])
|
|||
}
|
||||
}
|
||||
|
||||
static void transfer_escaped_string(int fd, char *str)
|
||||
{
|
||||
size_t size = strlen(str + 1);
|
||||
uint8_t *tx;
|
||||
uint8_t *rx;
|
||||
|
||||
tx = malloc(size);
|
||||
if (!tx)
|
||||
pabort("can't allocate tx buffer");
|
||||
|
||||
rx = malloc(size);
|
||||
if (!rx)
|
||||
pabort("can't allocate rx buffer");
|
||||
|
||||
size = unescape((char *)tx, str, size);
|
||||
transfer(fd, tx, rx, size);
|
||||
free(rx);
|
||||
free(tx);
|
||||
}
|
||||
|
||||
static void transfer_file(int fd, char *filename)
|
||||
{
|
||||
ssize_t bytes;
|
||||
struct stat sb;
|
||||
int tx_fd;
|
||||
uint8_t *tx;
|
||||
uint8_t *rx;
|
||||
|
||||
if (stat(filename, &sb) == -1)
|
||||
pabort("can't stat input file");
|
||||
|
||||
tx_fd = open(filename, O_RDONLY);
|
||||
if (fd < 0)
|
||||
pabort("can't open input file");
|
||||
|
||||
tx = malloc(sb.st_size);
|
||||
if (!tx)
|
||||
pabort("can't allocate tx buffer");
|
||||
|
||||
rx = malloc(sb.st_size);
|
||||
if (!rx)
|
||||
pabort("can't allocate rx buffer");
|
||||
|
||||
bytes = read(tx_fd, tx, sb.st_size);
|
||||
if (bytes != sb.st_size)
|
||||
pabort("failed to read input file");
|
||||
|
||||
transfer(fd, tx, rx, sb.st_size);
|
||||
free(rx);
|
||||
free(tx);
|
||||
close(tx_fd);
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[])
|
||||
{
|
||||
int ret = 0;
|
||||
int fd;
|
||||
uint8_t *tx;
|
||||
uint8_t *rx;
|
||||
int size;
|
||||
|
||||
parse_opts(argc, argv);
|
||||
|
||||
|
|
@ -300,17 +383,15 @@ int main(int argc, char *argv[])
|
|||
printf("bits per word: %d\n", bits);
|
||||
printf("max speed: %d Hz (%d KHz)\n", speed, speed/1000);
|
||||
|
||||
if (input_tx) {
|
||||
size = strlen(input_tx+1);
|
||||
tx = malloc(size);
|
||||
rx = malloc(size);
|
||||
size = unescape((char *)tx, input_tx, size);
|
||||
transfer(fd, tx, rx, size);
|
||||
free(rx);
|
||||
free(tx);
|
||||
} else {
|
||||
if (input_tx && input_file)
|
||||
pabort("only one of -p and --input may be selected");
|
||||
|
||||
if (input_tx)
|
||||
transfer_escaped_string(fd, input_tx);
|
||||
else if (input_file)
|
||||
transfer_file(fd, input_file);
|
||||
else
|
||||
transfer(fd, default_tx, default_rx, sizeof(default_tx));
|
||||
}
|
||||
|
||||
close(fd);
|
||||
|
||||
Loading…
Reference in New Issue