diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/spi/spi-ar934x.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/spi/spi-ar934x.c b/drivers/spi/spi-ar934x.c index def32e0aaefe..ec7250c4c810 100644 --- a/drivers/spi/spi-ar934x.c +++ b/drivers/spi/spi-ar934x.c @@ -82,7 +82,7 @@ static int ar934x_spi_transfer_one_message(struct spi_controller *master, struct spi_device *spi = m->spi; unsigned long trx_done, trx_cur; int stat = 0; - u8 term = 0; + u8 bpw, term = 0; int div, i; u32 reg; const u8 *tx_buf; @@ -90,6 +90,11 @@ static int ar934x_spi_transfer_one_message(struct spi_controller *master, m->actual_length = 0; list_for_each_entry(t, &m->transfers, transfer_list) { + if (t->bits_per_word >= 8 && t->bits_per_word < 32) + bpw = t->bits_per_word >> 3; + else + bpw = 4; + if (t->speed_hz) div = ar934x_spi_clk_div(sp, t->speed_hz); else @@ -105,10 +110,10 @@ static int ar934x_spi_transfer_one_message(struct spi_controller *master, iowrite32(reg, sp->base + AR934X_SPI_REG_CTRL); iowrite32(0, sp->base + AR934X_SPI_DATAOUT); - for (trx_done = 0; trx_done < t->len; trx_done += 4) { + for (trx_done = 0; trx_done < t->len; trx_done += bpw) { trx_cur = t->len - trx_done; - if (trx_cur > 4) - trx_cur = 4; + if (trx_cur > bpw) + trx_cur = bpw; else if (list_is_last(&t->transfer_list, &m->transfers)) term = 1; @@ -137,8 +142,10 @@ static int ar934x_spi_transfer_one_message(struct spi_controller *master, reg >>= 8; } } + spi_delay_exec(&t->word_delay, t); } m->actual_length += t->len; + spi_transfer_delay_exec(t); } msg_done: @@ -191,7 +198,8 @@ static int ar934x_spi_probe(struct platform_device *pdev) ctlr->mode_bits = SPI_LSB_FIRST; ctlr->setup = ar934x_spi_setup; ctlr->transfer_one_message = ar934x_spi_transfer_one_message; - ctlr->bits_per_word_mask = SPI_BPW_MASK(8); + ctlr->bits_per_word_mask = SPI_BPW_MASK(32) | SPI_BPW_MASK(24) | + SPI_BPW_MASK(16) | SPI_BPW_MASK(8); ctlr->dev.of_node = pdev->dev.of_node; ctlr->num_chipselect = 3; |