-From 7151c34627b938486008cfab25bfb4e4f730a021 Mon Sep 17 00:00:00 2001
+From 4ea647c5a257d57eaf230f783e54b2c0232852b8 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sat, 26 Nov 2011 21:33:41 +0100
-Subject: [PATCH 19/21] USB: Add driver for the bcma bus
+Subject: [PATCH 19/26] USB: Add driver for the bcma bus
This adds a USB driver using the generic platform device driver for the
USB controller found on the Broadcom bcma bus. The bcma bus just
---
drivers/usb/host/Kconfig | 12 ++
drivers/usb/host/Makefile | 1 +
- drivers/usb/host/bcma-hcd.c | 350 +++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 363 insertions(+), 0 deletions(-)
+ drivers/usb/host/bcma-hcd.c | 309 +++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 322 insertions(+), 0 deletions(-)
create mode 100644 drivers/usb/host/bcma-hcd.c
--- a/drivers/usb/host/Kconfig
+obj-$(CONFIG_USB_HCD_BCMA) += bcma-hcd.o
--- /dev/null
+++ b/drivers/usb/host/bcma-hcd.c
-@@ -0,0 +1,298 @@
+@@ -0,0 +1,309 @@
+/*
+ * Broadcom specific Advanced Microcontroller Bus
+ * Broadcom USB-core driver (BCMA bus glue)
+MODULE_DESCRIPTION("Common USB driver for BCMA Bus");
+MODULE_LICENSE("GPL");
+
-+#define BCMA_CORE_SIZE 0x1000
-+
+struct bcma_hcd_device {
+ struct platform_device *ehci_dev;
+ struct platform_device *ohci_dev;
+};
+
++static void __devinit bcma_hcd_4716wa(struct bcma_device *dev)
++{
++#ifdef CONFIG_BCMA_DRIVER_MIPS
++ /* Work around for 4716 failures. */
++ if (dev->bus->chipinfo.id == 0x4716) {
++ u32 tmp;
++
++ tmp = bcma_cpu_clock(&dev->bus->drv_mips);
++ if (tmp >= 480000000)
++ tmp = 0x1846b; /* set CDR to 0x11(fast) */
++ else if (tmp == 453000000)
++ tmp = 0x1046b; /* set CDR to 0x10(slow) */
++ else
++ tmp = 0;
++
++ /* Change Shim mdio control reg to fix host not acking at
++ * high frequencies
++ */
++ if (tmp) {
++ bcma_write32(dev, 0x524, 0x1); /* write sel to enable */
++ udelay(500);
++
++ bcma_write32(dev, 0x524, tmp);
++ udelay(500);
++ bcma_write32(dev, 0x524, 0x4ab);
++ udelay(500);
++ bcma_read32(dev, 0x528);
++ bcma_write32(dev, 0x528, 0x80000000);
++ }
++ }
++#endif /* CONFIG_BCMA_DRIVER_MIPS */
++}
++
+/* based on arch/mips/brcm-boards/bcm947xx/pcibios.c */
-+static void bcma_hcd_init_chip(struct bcma_device *dev)
++static void __devinit bcma_hcd_init_chip(struct bcma_device *dev)
+{
+ u32 tmp;
+
+ tmp = bcma_read32(dev, 0x1e0);
+ tmp |= 0x100;
+ bcma_write32(dev, 0x1e0, tmp);
-+ if (bcma_wait_bits(dev, 0x1e0, 1 << 24, 100, 0))
++ if (bcma_wait_bits(dev, 0x1e0, 1 << 24, 100, 1))
+ printk(KERN_EMERG "Failed to enable misc PPL!\n");
+
+ /* Take out of resets */
+ udelay(50);
+ tmp = bcma_read32(dev, 0x524);
+
-+ if (bcma_wait_bits(dev, 0x528, 0xc000, 10000, 1))
++ if (bcma_wait_bits(dev, 0x528, 0xc000, 10000, 1)) {
++ tmp = bcma_read32(dev, 0x528);
+ printk(KERN_EMERG
+ "USB20H mdio_rddata 0x%08x\n", tmp);
-+
++ }
+ bcma_write32(dev, 0x528, 0x80000000);
+ tmp = bcma_read32(dev, 0x314);
+ udelay(265);
+
+ udelay(1);
+ }
-+ }
-+#ifdef CONFIG_BCMA_DRIVER_MIPS
-+ /* Work around for 4716 failures. */
-+ if (dev->bus->chipinfo.id == 0x4716) {
-+ u32 clk_freq;
-+
-+ clk_freq = bcma_cpu_clock(&dev->bus->drv_mips);
-+ if (clk_freq >= 480000000)
-+ tmp = 0x1846b; /* set CDR to 0x11(fast) */
-+ else if (clk_freq == 453000000)
-+ tmp = 0x1046b; /* set CDR to 0x10(slow) */
-+ else
-+ tmp = 0;
+
-+ /* Change Shim mdio control reg to fix host not acking at
-+ * high frequencies
-+ */
-+ if (tmp) {
-+ bcma_write32(dev, 0x524, 0x1); /* write sel to enable */
-+ udelay(500);
-+
-+ bcma_write32(dev, 0x524, tmp);
-+ udelay(500);
-+ bcma_write32(dev, 0x524, 0x4ab);
-+ udelay(500);
-+ tmp = bcma_read32(dev, 0x528);
-+ bcma_write32(dev, 0x528, 0x80000000);
-+ }
++ bcma_hcd_4716wa(dev);
+ }
-+#endif /* CONFIG_BCMA_DRIVER_MIPS */
+}
+
-+static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev,
-+ char *name, u32 addr)
++static struct platform_device * __devinit
++bcma_hcd_create_pdev(struct bcma_device *dev, char *name, u32 addr)
+{
+ struct platform_device *hci_dev;
-+ struct resource *hci_res;
++ struct resource hci_res[2];
+ int ret = -ENOMEM;
+
-+ hci_res = kzalloc(sizeof(struct resource) * 2, GFP_KERNEL);
-+ if (!hci_res)
-+ return ERR_PTR(-ENOMEM);
++ memset(hci_res, 0, sizeof(hci_res));
+
+ hci_res[0].start = addr;
-+ hci_res[0].end = hci_res[0].start + BCMA_CORE_SIZE - 1;
++ hci_res[0].end = hci_res[0].start + 0x1000 - 1;
+ hci_res[0].flags = IORESOURCE_MEM;
+
+ hci_res[1].start = dev->irq;
+ hci_dev->dev.parent = &dev->dev;
+ hci_dev->dev.dma_mask = &hci_dev->dev.coherent_dma_mask;
+
-+ ret = platform_device_add_resources(hci_dev, hci_res, 2);
++ ret = platform_device_add_resources(hci_dev, hci_res,
++ ARRAY_SIZE(hci_res));
+ if (ret)
+ goto err_alloc;
+
+ ret = platform_device_add(hci_dev);
+ if (ret) {
+err_alloc:
-+ kfree(hci_res);
+ platform_device_put(hci_dev);
+ return ERR_PTR(ret);
+ }
+ return hci_dev;
+}
+
-+static int bcma_hcd_probe(struct bcma_device *dev)
++static int __devinit bcma_hcd_probe(struct bcma_device *dev)
+{
+ int err;
+ u16 chipid_top;
++ u32 ohci_addr;
+ struct bcma_hcd_device *usb_dev;
++ struct bcma_chipinfo *chipinfo;
+
++ chipinfo = &dev->bus->chipinfo;
+ /* USBcores are only connected on embedded devices. */
-+ chipid_top = (dev->bus->chipinfo.id & 0xFF00);
++ chipid_top = (chipinfo->id & 0xFF00);
+ if (chipid_top != 0x4700 && chipid_top != 0x5300)
+ return -ENODEV;
+
+
+ bcma_hcd_init_chip(dev);
+
++ /* In AI chips EHCI is addrspace 0, OHCI is 1 */
++ ohci_addr = dev->addr1;
++ if ((chipinfo->id == 0x5357 || chipinfo->id == 0x4749)
++ && chipinfo->rev == 0)
++ ohci_addr = 0x18009000;
++
+ usb_dev->ohci_dev = bcma_hcd_create_pdev(dev, "ohci-platform",
-+ dev->addr1);
++ ohci_addr);
+ if (IS_ERR(usb_dev->ohci_dev)) {
+ err = PTR_ERR(usb_dev->ohci_dev);
+ goto err_free_usb_dev;
+ if (IS_ERR(usb_dev->ehci_dev)) {
+ err = PTR_ERR(usb_dev->ehci_dev);
+ goto err_unregister_ohci_dev;
-+
+ }
+
+ bcma_set_drvdata(dev, usb_dev);
+ return err;
+}
+
-+static void bcma_hcd_remove(struct bcma_device *dev)
++static void __devexit bcma_hcd_remove(struct bcma_device *dev)
+{
+ struct bcma_hcd_device *usb_dev;
+ struct platform_device *ohci_dev;
+#define bcma_hcd_resume NULL
+#endif /* CONFIG_PM */
+
-+static const struct bcma_device_id bcma_hcd_table[] = {
++static const struct bcma_device_id bcma_hcd_table[] __devinitconst = {
+ BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_USB20_HOST, BCMA_ANY_REV, BCMA_ANY_CLASS),
+ BCMA_CORETABLE_END
+};
+ .name = KBUILD_MODNAME,
+ .id_table = bcma_hcd_table,
+ .probe = bcma_hcd_probe,
-+ .remove = bcma_hcd_remove,
++ .remove = __devexit_p(bcma_hcd_remove),
+ .shutdown = bcma_hcd_shutdown,
+ .suspend = bcma_hcd_suspend,
+ .resume = bcma_hcd_resume,
projects / openwrt.git / blobdiff