MIPS: ath79: register platform devices for the PCI controllers

The pci-ar71xx and pci-ar724x drivers were converted
into platform drivers. Register the corresponding
platform devices for the PCI controllers instead
of using the ar7{1x,24}x_pcibios_init functions.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/4908/
Signed-off-by: John Crispin <blogic@openwrt.org>

1 files changed, 78 insertions, 9 deletions

diff --git a/arch/mips/ath79/pci.c b/arch/mips/ath79/pci.c
index ca83abd9d31e..81ef5797944a 100644
--- a/arch/mips/ath79/pci.c
+++ b/arch/mips/ath79/pci.c
@@ -14,6 +14,8 @@
 
 #include <linux/init.h>
 #include <linux/pci.h>
+#include <linux/resource.h>
+#include <linux/platform_device.h>
 #include <asm/mach-ath79/ar71xx_regs.h>
 #include <asm/mach-ath79/ath79.h>
 #include <asm/mach-ath79/irq.h>
@@ -110,21 +112,88 @@ void __init ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *dev))
         ath79_pci_plat_dev_init = func;
 }
 
-int __init ath79_register_pci(void)
+static struct platform_device *
+ath79_register_pci_ar71xx(void)
+{
+        struct platform_device *pdev;
+        struct resource res[2];
+
+        memset(res, 0, sizeof(res));
+
+        res[0].name = "cfg_base";
+        res[0].flags = IORESOURCE_MEM;
+        res[0].start = AR71XX_PCI_CFG_BASE;
+        res[0].end = AR71XX_PCI_CFG_BASE + AR71XX_PCI_CFG_SIZE - 1;
+
+        res[1].flags = IORESOURCE_IRQ;
+        res[1].start = ATH79_CPU_IRQ_IP2;
+        res[1].end = ATH79_CPU_IRQ_IP2;
+
+        pdev = platform_device_register_simple("ar71xx-pci", -1,
+                                               res, ARRAY_SIZE(res));
+        return pdev;
+}
+
+static struct platform_device *
+ath79_register_pci_ar724x(int id,
+                          unsigned long cfg_base,
+                          unsigned long ctrl_base,
+                          int irq)
 {
-        if (soc_is_ar71xx())
-                return ar71xx_pcibios_init();
+        struct platform_device *pdev;
+        struct resource res[3];
 
-        if (soc_is_ar724x())
-                return ar724x_pcibios_init(ATH79_CPU_IRQ_IP2);
+        memset(res, 0, sizeof(res));
 
-        if (soc_is_ar9342() || soc_is_ar9344()) {
+        res[0].name = "cfg_base";
+        res[0].flags = IORESOURCE_MEM;
+        res[0].start = cfg_base;
+        res[0].end = cfg_base + AR724X_PCI_CFG_SIZE - 1;
+
+        res[1].name = "ctrl_base";
+        res[1].flags = IORESOURCE_MEM;
+        res[1].start = ctrl_base;
+        res[1].end = ctrl_base + AR724X_PCI_CTRL_SIZE - 1;
+
+        res[2].flags = IORESOURCE_IRQ;
+        res[2].start = irq;
+        res[2].end = irq;
+
+        pdev = platform_device_register_simple("ar724x-pci", id,
+                                               res, ARRAY_SIZE(res));
+        return pdev;
+}
+
+int __init ath79_register_pci(void)
+{
+        struct platform_device *pdev = NULL;
+
+        if (soc_is_ar71xx()) {
+                pdev = ath79_register_pci_ar71xx();
+        } else if (soc_is_ar724x()) {
+                pdev = ath79_register_pci_ar724x(-1,
+                                                 AR724X_PCI_CFG_BASE,
+                                                 AR724X_PCI_CTRL_BASE,
+                                                 ATH79_CPU_IRQ_IP2);
+        } else if (soc_is_ar9342() ||
+                   soc_is_ar9344()) {
                 u32 bootstrap;
 
                 bootstrap = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
-                if (bootstrap & AR934X_BOOTSTRAP_PCIE_RC)
-                        return ar724x_pcibios_init(ATH79_IP2_IRQ(0));
+                if ((bootstrap & AR934X_BOOTSTRAP_PCIE_RC) == 0)
+                        return -ENODEV;
+
+                pdev = ath79_register_pci_ar724x(-1,
+                                                 AR724X_PCI_CFG_BASE,
+                                                 AR724X_PCI_CTRL_BASE,
+                                                 ATH79_IP2_IRQ(0));
+        } else {
+                /* No PCI support */
+                return -ENODEV;
         }
 
-        return -ENODEV;
+        if (!pdev)
+                pr_err("unable to register PCI controller device\n");
+
+        return pdev ? 0 : -ENODEV;
 }