mpc52xx_psc_spi: fix it for CONFIG_PPC_MERGE

Fix mpc5200 PSC SPI driver to actually work for CONFIG_PPC_MERGE
 - s/mpc52xx/mpc5200/, as this was changed in device tree some time ago
 - fix spi id detection

The move from 'ppc' to 'powerpc' didn't quite match the latest
kernel.org code.

Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Acked-by: Dragos Carp <dragos.carp@toptica.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/spi/mpc52xx_psc_spi.c b/drivers/spi/mpc52xx_psc_spi.c
index 052359f..11f36be 100644 (file)
--- a/drivers/spi/mpc52xx_psc_spi.c
+++ b/drivers/spi/mpc52xx_psc_spi.c
@@ -329,8 +329,8 @@ 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 +445,6 @@ 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 +591,17 @@ 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 +614,7 @@ 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", },
        {},
 };