diff options
| author | Brian Niebuhr <bniebuhr@efjohnson.com> | 2010-08-19 15:12:42 +0400 |
|---|---|---|
| committer | Sekhar Nori <nsekhar@ti.com> | 2010-11-18 16:08:28 +0300 |
| commit | b7ab24a0da96c8fc6d551ea87e82692299df6ac6 (patch) | |
| tree | 4bd08aeeb692fa29873f21803eb4c480dba5c730 /drivers/spi | |
| parent | 6321be60edac6037ea76e9beef375c6ae2961765 (diff) | |
| download | linux-b7ab24a0da96c8fc6d551ea87e82692299df6ac6.tar.xz | |
spi: davinci: simplify calculation of edma acount value
The EDMA acount (called data_type in davinci_spi_bufs_dma())
is simply the bytes_per_word obtained in the transfer setup
function. The current code calculates the acount value from
bytes_per_word in a convoluted manner. Simplify the code.
Signed-off-by: Brian Niebuhr <bniebuhr@efjohnson.com>
Tested-By: Michael Williamson <michael.williamson@criticallink.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/davinci_spi.c | 25 |
1 files changed, 3 insertions, 22 deletions
diff --git a/drivers/spi/davinci_spi.c b/drivers/spi/davinci_spi.c index f1c3502c2d01..b0b338fc4466 100644 --- a/drivers/spi/davinci_spi.c +++ b/drivers/spi/davinci_spi.c @@ -39,9 +39,6 @@ #define CS_DEFAULT 0xFF #define SPI_BUFSIZ (SMP_CACHE_BYTES + 1) -#define DAVINCI_DMA_DATA_TYPE_S8 0x01 -#define DAVINCI_DMA_DATA_TYPE_S16 0x02 -#define DAVINCI_DMA_DATA_TYPE_S32 0x04 #define SPIFMT_PHASE_MASK BIT(16) #define SPIFMT_POLARITY_MASK BIT(17) @@ -729,19 +726,14 @@ static int davinci_spi_bufs_pio(struct spi_device *spi, struct spi_transfer *t) return t->len; } -#define DAVINCI_DMA_DATA_TYPE_S8 0x01 -#define DAVINCI_DMA_DATA_TYPE_S16 0x02 -#define DAVINCI_DMA_DATA_TYPE_S32 0x04 - static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t) { struct davinci_spi *davinci_spi; int int_status = 0; int count, temp_count; - u8 conv = 1; u32 data1_reg_val; struct davinci_spi_dma *davinci_spi_dma; - int word_len, data_type, ret; + int data_type, ret; unsigned long tx_reg, rx_reg; struct device *sdev; @@ -757,8 +749,8 @@ static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t) davinci_spi->rx = t->rx_buf; /* convert len to words based on bits_per_word */ - conv = davinci_spi->bytes_per_word[spi->chip_select]; - davinci_spi->count = t->len / conv; + data_type = davinci_spi->bytes_per_word[spi->chip_select]; + davinci_spi->count = t->len / data_type; data1_reg_val = ioread32(davinci_spi->base + SPIDAT1); @@ -767,17 +759,6 @@ static int davinci_spi_bufs_dma(struct spi_device *spi, struct spi_transfer *t) init_completion(&davinci_spi_dma->dma_rx_completion); init_completion(&davinci_spi_dma->dma_tx_completion); - word_len = conv * 8; - - if (word_len <= 8) - data_type = DAVINCI_DMA_DATA_TYPE_S8; - else if (word_len <= 16) - data_type = DAVINCI_DMA_DATA_TYPE_S16; - else if (word_len <= 32) - data_type = DAVINCI_DMA_DATA_TYPE_S32; - else - return -EINVAL; - ret = davinci_spi_bufs_prep(spi, davinci_spi); if (ret) return ret; |