spi: altera: add 32bit data width transfer support. (3011d314) · Commits · 戴 / test

Add support for 32bit width data register, then it supports 32bit data width spi slave device and spi transfers. Signed-off-by:

drivers/spi/spi-altera.c

+14 −0

Original line number	Diff line number	Diff line
		@@ -86,6 +86,13 @@ static void altera_spi_tx_word(struct altera_spi *hw)
		txd = (hw->tx[hw->count * 2]
		\| (hw->tx[hw->count * 2 + 1] << 8));
		break;
		case 4:
		txd = (hw->tx[hw->count * 4]
		\| (hw->tx[hw->count * 4 + 1] << 8)
		\| (hw->tx[hw->count * 4 + 2] << 16)
		\| (hw->tx[hw->count * 4 + 3] << 24));
		break;

		}
		}

		@@ -106,6 +113,13 @@ static void altera_spi_rx_word(struct altera_spi *hw)
		hw->rx[hw->count * 2] = rxd;
		hw->rx[hw->count * 2 + 1] = rxd >> 8;
		break;
		case 4:
		hw->rx[hw->count * 4] = rxd;
		hw->rx[hw->count * 4 + 1] = rxd >> 8;
		hw->rx[hw->count * 4 + 2] = rxd >> 16;
		hw->rx[hw->count * 4 + 3] = rxd >> 24;
		break;

		}
		}