diff options
Diffstat (limited to 'drivers/spi/spi-sh-msiof.c')
| -rw-r--r-- | drivers/spi/spi-sh-msiof.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index d3370a612d84..a7934ab00b96 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -48,8 +48,8 @@ struct sh_msiof_spi_priv { const struct sh_msiof_chipdata *chipdata; struct sh_msiof_spi_info *info; struct completion done; - int tx_fifo_size; - int rx_fifo_size; + unsigned int tx_fifo_size; + unsigned int rx_fifo_size; void *tx_dma_page; void *rx_dma_page; dma_addr_t tx_dma_addr; @@ -95,8 +95,6 @@ struct sh_msiof_spi_priv { #define MDR2_WDLEN1(i) (((i) - 1) << 16) /* Word Count (1-64/256 (SH, A1))) */ #define MDR2_GRPMASK1 0x00000001 /* Group Output Mask 1 (SH, A1) */ -#define MAX_WDLEN 256U - /* TSCR and RSCR */ #define SCR_BRPS_MASK 0x1f00 /* Prescaler Setting (1-32) */ #define SCR_BRPS(i) (((i) - 1) << 8) @@ -850,7 +848,12 @@ static int sh_msiof_transfer_one(struct spi_master *master, * DMA supports 32-bit words only, hence pack 8-bit and 16-bit * words, with byte resp. word swapping. */ - unsigned int l = min(len, MAX_WDLEN * 4); + unsigned int l = 0; + + if (tx_buf) + l = min(len, p->tx_fifo_size * 4); + if (rx_buf) + l = min(len, p->rx_fifo_size * 4); if (bits <= 8) { if (l & 3) @@ -963,7 +966,7 @@ static const struct sh_msiof_chipdata sh_data = { static const struct sh_msiof_chipdata r8a779x_data = { .tx_fifo_size = 64, - .rx_fifo_size = 256, + .rx_fifo_size = 64, .master_flags = SPI_MASTER_MUST_TX, }; @@ -1265,11 +1268,6 @@ static int sh_msiof_spi_remove(struct platform_device *pdev) static const struct platform_device_id spi_driver_ids[] = { { "spi_sh_msiof", (kernel_ulong_t)&sh_data }, - { "spi_r8a7790_msiof", (kernel_ulong_t)&r8a779x_data }, - { "spi_r8a7791_msiof", (kernel_ulong_t)&r8a779x_data }, - { "spi_r8a7792_msiof", (kernel_ulong_t)&r8a779x_data }, - { "spi_r8a7793_msiof", (kernel_ulong_t)&r8a779x_data }, - { "spi_r8a7794_msiof", (kernel_ulong_t)&r8a779x_data }, {}, }; MODULE_DEVICE_TABLE(platform, spi_driver_ids); |