Merge Linux 2.6.23

[linux-2.6-omap-h63xx.git] / drivers / spi / mpc52xx_psc_spi.c

diff --git a/drivers/spi/mpc52xx_psc_spi.c b/drivers/spi/mpc52xx_psc_spi.c
index 052359fc41ee61c3324c925482baf7defa4b976a..d2a4b2bdb07b6cbae5f2a4b4d51727a813ed2596 100644 (file)
--- a/drivers/spi/mpc52xx_psc_spi.c
+++ b/drivers/spi/mpc52xx_psc_spi.c
@@ -270,6 +270,9 @@ static void mpc52xx_psc_spi_work(struct work_struct *work)
        spin_unlock_irq(&mps->lock);
 }
 
+/* the spi->mode bits understood by this driver: */
+#define MODEBITS (SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LSB_FIRST)
+
 static int mpc52xx_psc_spi_setup(struct spi_device *spi)
 {
        struct mpc52xx_psc_spi *mps = spi_master_get_devdata(spi->master);
@@ -279,6 +282,12 @@ static int mpc52xx_psc_spi_setup(struct spi_device *spi)
        if (spi->bits_per_word%8)
                return -EINVAL;
 
+       if (spi->mode & ~MODEBITS) {
+               dev_dbg(&spi->dev, "setup: unsupported mode bits %x\n",
+                       spi->mode & ~MODEBITS);
+               return -EINVAL;
+       }
+
        if (!cs) {
                cs = kzalloc(sizeof *cs, GFP_KERNEL);
                if (!cs)
@@ -329,8 +338,8 @@ static int mpc52xx_psc_spi_port_config(int psc_id, struct mpc52xx_psc_spi *mps)
        int ret = 0;
 
 #if defined(CONFIG_PPC_MERGE)
-       cdm = mpc52xx_find_and_map("mpc52xx-cdm");
-       gpio = mpc52xx_find_and_map("mpc52xx-gpio");
+       cdm = mpc52xx_find_and_map("mpc5200-cdm");
+       gpio = mpc52xx_find_and_map("mpc5200-gpio");
 #else
        cdm = ioremap(MPC52xx_PA(MPC52xx_CDM_OFFSET), MPC52xx_CDM_SIZE);
        gpio = ioremap(MPC52xx_PA(MPC52xx_GPIO_OFFSET), MPC52xx_GPIO_SIZE);
@@ -445,9 +454,6 @@ static int __init mpc52xx_psc_spi_do_probe(struct device *dev, u32 regaddr,
        struct spi_master *master;
        int ret;
 
-       if (pdata == NULL)
-               return -ENODEV;
-
        master = spi_alloc_master(dev, sizeof *mps);
        if (master == NULL)
                return -ENOMEM;
@@ -594,17 +600,17 @@ static int __init mpc52xx_psc_spi_of_probe(struct of_device *op,
        }
        regaddr64 = of_translate_address(op->node, regaddr_p);
 
+       /* get PSC id (1..6, used by port_config) */
        if (op->dev.platform_data == NULL) {
-               struct device_node *np;
-               int i = 0;
+               const u32 *psc_nump;
 
-               for_each_node_by_type(np, "spi") {
-                       if (of_find_device_by_node(np) == op) {
-                               id = i;
-                               break;
-                       }
-                       i++;
+               psc_nump = of_get_property(op->node, "cell-index", NULL);
+               if (!psc_nump || *psc_nump > 5) {
+                       printk(KERN_ERR "mpc52xx_psc_spi: Device node %s has invalid "
+                                       "cell-index property\n", op->node->full_name);
+                       return -EINVAL;
                }
+               id = *psc_nump + 1;
        }
 
        return mpc52xx_psc_spi_do_probe(&op->dev, (u32)regaddr64, (u32)size64,
@@ -617,7 +623,7 @@ static int __exit mpc52xx_psc_spi_of_remove(struct of_device *op)
 }
 
 static struct of_device_id mpc52xx_psc_spi_of_match[] = {
-       { .type = "spi", .compatible = "mpc52xx-psc-spi", },
+       { .type = "spi", .compatible = "mpc5200-psc-spi", },
        {},
 };