diff options
Diffstat (limited to 'drivers/spi/spi-omap2-mcspi.c')
| -rw-r--r-- | drivers/spi/spi-omap2-mcspi.c | 24 |
1 files changed, 6 insertions, 18 deletions
diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c index 7e3083b83534..2c043817c66a 100644 --- a/drivers/spi/spi-omap2-mcspi.c +++ b/drivers/spi/spi-omap2-mcspi.c @@ -27,6 +27,8 @@ #include <linux/spi/spi.h> +#include "internals.h" + #include <linux/platform_data/spi-omap2-mcspi.h> #define OMAP2_MCSPI_MAX_FREQ 48000000 @@ -1208,8 +1210,7 @@ static int omap2_mcspi_transfer_one(struct spi_controller *ctlr, unsigned count; if ((mcspi_dma->dma_rx && mcspi_dma->dma_tx) && - ctlr->cur_msg_mapped && - ctlr->can_dma(ctlr, spi, t)) + spi_xfer_is_dma_mapped(ctlr, spi, t)) omap2_mcspi_set_fifo(spi, t, 1); omap2_mcspi_set_enable(spi, 1); @@ -1220,8 +1221,7 @@ static int omap2_mcspi_transfer_one(struct spi_controller *ctlr, + OMAP2_MCSPI_TX0); if ((mcspi_dma->dma_rx && mcspi_dma->dma_tx) && - ctlr->cur_msg_mapped && - ctlr->can_dma(ctlr, spi, t)) + spi_xfer_is_dma_mapped(ctlr, spi, t)) count = omap2_mcspi_txrx_dma(spi, t); else count = omap2_mcspi_txrx_pio(spi, t); @@ -1277,24 +1277,11 @@ static int omap2_mcspi_prepare_message(struct spi_controller *ctlr, /* * Check if this transfer contains only one word; - * OR contains 1 to 4 words, with bits_per_word == 8 and no delay between each word - * OR contains 1 to 2 words, with bits_per_word == 16 and no delay between each word - * - * If one of the two last case is true, this also change the bits_per_word of this - * transfer to make it a bit faster. - * It's not an issue to change the bits_per_word here even if the multi-mode is not - * applicable for this message, the signal on the wire will be the same. */ if (bits_per_word < 8 && tr->len == 1) { /* multi-mode is applicable, only one word (1..7 bits) */ - } else if (tr->word_delay.value == 0 && bits_per_word == 8 && tr->len <= 4) { - /* multi-mode is applicable, only one "bigger" word (8,16,24,32 bits) */ - tr->bits_per_word = tr->len * bits_per_word; - } else if (tr->word_delay.value == 0 && bits_per_word == 16 && tr->len <= 2) { - /* multi-mode is applicable, only one "bigger" word (16,32 bits) */ - tr->bits_per_word = tr->len * bits_per_word / 2; } else if (bits_per_word >= 8 && tr->len == bits_per_word / 8) { - /* multi-mode is applicable, only one word (9..15,17..32 bits) */ + /* multi-mode is applicable, only one word (8..32 bits) */ } else { /* multi-mode is not applicable: more than one word in the transfer */ mcspi->use_multi_mode = false; @@ -1671,4 +1658,5 @@ static struct platform_driver omap2_mcspi_driver = { }; module_platform_driver(omap2_mcspi_driver); +MODULE_DESCRIPTION("OMAP2 McSPI controller driver"); MODULE_LICENSE("GPL"); |