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yaml --- r: 86217 b: refs/heads/master c: f6febcc h: refs/heads/master i: 86215: 1ac3a4f v: v3
git-mirror · Feb 24, 2008 · 3bd4506 · 3bd4506
1 parent c2076ee
commit 3bd4506
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 4f9d5f4a353440f2265781bfa641587964901861
+refs/heads/master: f6febccd7f86fbe94858a4a32d9384cc014c9f40
diff --git a/trunk/drivers/spi/atmel_spi.c b/trunk/drivers/spi/atmel_spi.c
@@ -87,6 +87,16 @@ static void cs_activate(struct atmel_spi *as, struct spi_device *spi)
 	unsigned gpio = (unsigned) spi->controller_data;
 	unsigned active = spi->mode & SPI_CS_HIGH;
 	u32 mr;
+	int i;
+	u32 csr;
+	u32 cpol = (spi->mode & SPI_CPOL) ? SPI_BIT(CPOL) : 0;
+
+	/* Make sure clock polarity is correct */
+	for (i = 0; i < spi->master->num_chipselect; i++) {
+		csr = spi_readl(as, CSR0 + 4 * i);
+		if ((csr ^ cpol) & SPI_BIT(CPOL))
+			spi_writel(as, CSR0 + 4 * i, csr ^ SPI_BIT(CPOL));
+	}
 
 	mr = spi_readl(as, MR);
 	mr = SPI_BFINS(PCS, ~(1 << spi->chip_select), mr);