X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fspi%2Fmpc52xx_psc_spi.c;h=681d62325d3d2309807877ab3ddd3fb5ebf4585c;hb=eb6d42ea17329745d7d712d3aa3bb84ec1da9c85;hp=253ed5682a6d6c354a761791b4103d2ec4f04a20;hpb=70ec75c5b8e0bda7a16fb387f91e08545f379a0e;p=linux-2.6

diff --git a/drivers/spi/mpc52xx_psc_spi.c b/drivers/spi/mpc52xx_psc_spi.c
index 253ed5682a..681d62325d 100644
--- a/drivers/spi/mpc52xx_psc_spi.c
+++ b/drivers/spi/mpc52xx_psc_spi.c
@@ -1,5 +1,5 @@
 /*
- * MPC52xx SPC in SPI mode driver.
+ * MPC52xx PSC in SPI mode driver.
  *
  * Maintainer: Dragos Carp
  *
@@ -42,6 +42,7 @@ struct mpc52xx_psc_spi {
 
 	/* driver internal data */
 	struct mpc52xx_psc __iomem *psc;
+	struct mpc52xx_psc_fifo __iomem *fifo;
 	unsigned int irq;
 	u8 bits_per_word;
 	u8 busy;
@@ -139,6 +140,7 @@ static int mpc52xx_psc_spi_transfer_rxtx(struct spi_device *spi,
 {
 	struct mpc52xx_psc_spi *mps = spi_master_get_devdata(spi->master);
 	struct mpc52xx_psc __iomem *psc = mps->psc;
+	struct mpc52xx_psc_fifo __iomem *fifo = mps->fifo;
 	unsigned rb = 0;	/* number of bytes receieved */
 	unsigned sb = 0;	/* number of bytes sent */
 	unsigned char *rx_buf = (unsigned char *)t->rx_buf;
@@ -190,11 +192,11 @@ static int mpc52xx_psc_spi_transfer_rxtx(struct spi_device *spi,
 			out_8(&psc->mode, 0);
 		} else {
 			out_8(&psc->mode, MPC52xx_PSC_MODE_FFULL);
-			out_be16(&psc->rfalarm, rfalarm);
+			out_be16(&fifo->rfalarm, rfalarm);
 		}
 		out_be16(&psc->mpc52xx_psc_imr, MPC52xx_PSC_IMR_RXRDY);
 		wait_for_completion(&mps->done);
-		recv_at_once = in_be16(&psc->rfnum);
+		recv_at_once = in_be16(&fifo->rfnum);
 		dev_dbg(&spi->dev, "%d bytes received\n", recv_at_once);
 
 		send_at_once = recv_at_once;
@@ -331,6 +333,7 @@ static void mpc52xx_psc_spi_cleanup(struct spi_device *spi)
 static int mpc52xx_psc_spi_port_config(int psc_id, struct mpc52xx_psc_spi *mps)
 {
 	struct mpc52xx_psc __iomem *psc = mps->psc;
+	struct mpc52xx_psc_fifo __iomem *fifo = mps->fifo;
 	u32 mclken_div;
 	int ret = 0;
 
@@ -346,7 +349,7 @@ static int mpc52xx_psc_spi_port_config(int psc_id, struct mpc52xx_psc_spi *mps)
 	/* Disable interrupts, interrupts are based on alarm level */
 	out_be16(&psc->mpc52xx_psc_imr, 0);
 	out_8(&psc->command, MPC52xx_PSC_SEL_MODE_REG_1);
-	out_8(&psc->rfcntl, 0);
+	out_8(&fifo->rfcntl, 0);
 	out_8(&psc->mode, MPC52xx_PSC_MODE_FFULL);
 
 	/* Configure 8bit codec mode as a SPI master and use EOF flags */
@@ -419,6 +422,8 @@ static int __init mpc52xx_psc_spi_do_probe(struct device *dev, u32 regaddr,
 		ret = -EFAULT;
 		goto free_master;
 	}
+	/* On the 5200, fifo regs are immediately ajacent to the psc regs */
+	mps->fifo = ((void __iomem *)mps->psc) + sizeof(struct mpc52xx_psc);
 
 	ret = request_irq(mps->irq, mpc52xx_psc_spi_isr, 0, "mpc52xx-psc-spi",
 				mps);
@@ -495,6 +500,9 @@ static int __exit mpc52xx_psc_spi_remove(struct platform_device *dev)
 	return mpc52xx_psc_spi_do_remove(&dev->dev);
 }
 
+/* work with hotplug and coldplug */
+MODULE_ALIAS("platform:mpc52xx-psc-spi");
+
 static struct platform_driver mpc52xx_psc_spi_platform_driver = {
 	.remove = __exit_p(mpc52xx_psc_spi_remove),
 	.driver = {