diff options
Diffstat (limited to 'drivers/spi')
-rw-r--r-- | drivers/spi/at25.c | 7 | ||||
-rw-r--r-- | drivers/spi/atmel_spi.c | 8 | ||||
-rw-r--r-- | drivers/spi/spi.c | 2 | ||||
-rw-r--r-- | drivers/spi/spi_bfin5xx.c | 17 | ||||
-rw-r--r-- | drivers/spi/spi_imx.c | 3 |
5 files changed, 22 insertions, 15 deletions
diff --git a/drivers/spi/at25.c b/drivers/spi/at25.c index 8efa07e8b8c..e007833cca5 100644 --- a/drivers/spi/at25.c +++ b/drivers/spi/at25.c @@ -111,7 +111,8 @@ at25_ee_read( } static ssize_t -at25_bin_read(struct kobject *kobj, char *buf, loff_t off, size_t count) +at25_bin_read(struct kobject *kobj, struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t count) { struct device *dev; struct at25_data *at25; @@ -236,7 +237,8 @@ at25_ee_write(struct at25_data *at25, char *buf, loff_t off, size_t count) } static ssize_t -at25_bin_write(struct kobject *kobj, char *buf, loff_t off, size_t count) +at25_bin_write(struct kobject *kobj, struct bin_attribute *bin_attr, + char *buf, loff_t off, size_t count) { struct device *dev; struct at25_data *at25; @@ -314,7 +316,6 @@ static int at25_probe(struct spi_device *spi) */ at25->bin.attr.name = "eeprom"; at25->bin.attr.mode = S_IRUSR; - at25->bin.attr.owner = THIS_MODULE; at25->bin.read = at25_bin_read; at25->bin.size = at25->chip.byte_len; diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c index 1d8a2f6bb8e..8b2601de363 100644 --- a/drivers/spi/atmel_spi.c +++ b/drivers/spi/atmel_spi.c @@ -113,16 +113,16 @@ static void atmel_spi_next_xfer(struct spi_master *master, len = as->remaining_bytes; - tx_dma = xfer->tx_dma; - rx_dma = xfer->rx_dma; + tx_dma = xfer->tx_dma + xfer->len - len; + rx_dma = xfer->rx_dma + xfer->len - len; /* use scratch buffer only when rx or tx data is unspecified */ - if (rx_dma == INVALID_DMA_ADDRESS) { + if (!xfer->rx_buf) { rx_dma = as->buffer_dma; if (len > BUFFER_SIZE) len = BUFFER_SIZE; } - if (tx_dma == INVALID_DMA_ADDRESS) { + if (!xfer->tx_buf) { tx_dma = as->buffer_dma; if (len > BUFFER_SIZE) len = BUFFER_SIZE; diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index c3219b29b5a..4831edbae2d 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -411,7 +411,7 @@ EXPORT_SYMBOL_GPL(spi_alloc_master); */ int spi_register_master(struct spi_master *master) { - static atomic_t dyn_bus_id = ATOMIC_INIT((1<<16) - 1); + static atomic_t dyn_bus_id = ATOMIC_INIT((1<<15) - 1); struct device *dev = master->cdev.dev; int status = -ENODEV; int dynamic = 0; diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c index 7d2d9ec6cac..48587c27050 100644 --- a/drivers/spi/spi_bfin5xx.c +++ b/drivers/spi/spi_bfin5xx.c @@ -582,14 +582,19 @@ static irqreturn_t dma_irq_handler(int irq, void *dev_id) dev_dbg(&drv_data->pdev->dev, "in dma_irq_handler\n"); clear_dma_irqstat(CH_SPI); + /* Wait for DMA to complete */ + while (get_dma_curr_irqstat(CH_SPI) & DMA_RUN) + continue; + /* - * wait for the last transaction shifted out. yes, these two - * while loops are supposed to be the same (see the HRM). + * wait for the last transaction shifted out. HRM states: + * at this point there may still be data in the SPI DMA FIFO waiting + * to be transmitted ... software needs to poll TXS in the SPI_STAT + * register until it goes low for 2 successive reads */ if (drv_data->tx != NULL) { - while (bfin_read_SPI_STAT() & TXS) - continue; - while (bfin_read_SPI_STAT() & TXS) + while ((bfin_read_SPI_STAT() & TXS) || + (bfin_read_SPI_STAT() & TXS)) continue; } @@ -1082,7 +1087,7 @@ static int setup(struct spi_device *spi) */ static void cleanup(struct spi_device *spi) { - struct chip_data *chip = spi_get_ctldata((struct spi_device *)spi); + struct chip_data *chip = spi_get_ctldata(spi); kfree(chip); } diff --git a/drivers/spi/spi_imx.c b/drivers/spi/spi_imx.c index 51daa212c6b..656be4a5094 100644 --- a/drivers/spi/spi_imx.c +++ b/drivers/spi/spi_imx.c @@ -121,7 +121,7 @@ 32.768 KHz Clock */ /* SPI DMA Register Bit Fields & Masks */ -#define SPI_DMA_RHDMA (0xF << 4) /* RXFIFO Half Status */ +#define SPI_DMA_RHDMA (0x1 << 4) /* RXFIFO Half Status */ #define SPI_DMA_RFDMA (0x1 << 5) /* RXFIFO Full Status */ #define SPI_DMA_TEDMA (0x1 << 6) /* TXFIFO Empty Status */ #define SPI_DMA_THDMA (0x1 << 7) /* TXFIFO Half Status */ @@ -1355,6 +1355,7 @@ static int setup(struct spi_device *spi) spi->bits_per_word, spi_speed_hz(SPI_CONTROL_DATARATE_MIN), spi->max_speed_hz); + return status; err_first_setup: kfree(chip); |