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brcm47xx: update usb driver

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Add workarround for BCM5357 and BCM4749.

This patch contains the following fixes from George Kashperko:
* separate subroutines for controller initialization workarounds -
   following CodingStyle recommendations;
* __devinit __devexit __devinitconst annotations for CONFIG_HOTPLUG;
* fix leak in ssb_hcd_create_pdev/bcma_hcd_create_pdev - as hci_res being
   kmalloc'ed is never freed anywhere while platform_device_add_resources
   will kmemdup resources right away;
* fix compilation error in ssb_hcd_resume - it will fail as soon as
   CONFIG_PM is selected.



git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29734 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
hauke
2012-01-13 20:11:23 +00:00
parent 3651d1c332
commit 01cb3619d3
2 changed files with 114 additions and 100 deletions
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98
target/linux/brcm47xx/patches-3.0/0033-USB-Add-driver-for-the-ssb-bus.patch
View File

@@ -1,7 +1,7 @@
From b61e70ad9080a6dbd3731917ec21dbcbb9d382a2 Mon Sep 17 00:00:00 2001
From 0f91c21de577d2d9f1fd164ca686d9a4ff0e2c8b Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sat, 26 Nov 2011 21:35:17 +0100
Subject: [PATCH 20/21] USB: Add driver for the ssb bus
Subject: [PATCH 20/26] USB: Add driver for the ssb bus
This adds a USB driver using the generic platform device driver for the
USB controller found on the Broadcom ssb bus. The ssb bus just
@@ -19,8 +19,8 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
drivers/usb/host/Kconfig | 12 ++
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ssb-hcd.c | 320 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 333 insertions(+), 0 deletions(-)
drivers/usb/host/ssb-hcd.c | 272 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 285 insertions(+), 0 deletions(-)
create mode 100644 drivers/usb/host/ssb-hcd.c
--- a/drivers/usb/host/Kconfig
@@ -50,7 +50,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+obj-$(CONFIG_USB_HCD_SSB) += ssb-hcd.o
--- /dev/null
+++ b/drivers/usb/host/ssb-hcd.c
@@ -0,0 +1,268 @@
@@ -0,0 +1,272 @@
+/*
+ * Sonics Silicon Backplane
+ * Broadcom USB-core driver (SSB bus glue)
@@ -89,16 +89,23 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+ u32 enable_flags;
+};
+
+/* based on arch/mips/brcm-boards/bcm947xx/pcibios.c */
+static u32 ssb_hcd_init_chip(struct ssb_device *dev)
+static void __devinit ssb_hcd_5354wa(struct ssb_device *dev)
+{
+ u32 tmp, flags = 0;
+#ifdef CONFIG_SSB_DRIVER_MIPS
+ /* Work around for 5354 failures */
+ if (dev->id.revision == 2 && dev->bus->chip_id == 0x5354) {
+ /* Change syn01 reg */
+ ssb_write32(dev, 0x894, 0x00fe00fe);
+
+ if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV) {
+ /* Put the device into host-mode. */
+ flags |= SSB_HCD_TMSLOW_HOSTMODE;
+ ssb_device_enable(dev, flags);
+ } else if (dev->id.coreid == SSB_DEV_USB20_HOST) {
+ /* Change syn03 reg */
+ ssb_write32(dev, 0x89c, ssb_read32(dev, 0x89c) | 0x1);
+ }
+#endif
+}
+
+static void __devinit ssb_hcd_usb20wa(struct ssb_device *dev)
+{
+ if (dev->id.coreid == SSB_DEV_USB20_HOST) {
+ /*
+ * USB 2.0 special considerations:
+ *
@@ -106,51 +113,46 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+ * Control Register must be programmed to bring the USB core
+ * and various phy components out of reset.
+ */
+ ssb_device_enable(dev, 0);
+ ssb_write32(dev, 0x200, 0x7ff);
+
+ /* Change Flush control reg */
+ tmp = ssb_read32(dev, 0x400);
+ tmp &= ~8;
+ ssb_write32(dev, 0x400, tmp);
+ tmp = ssb_read32(dev, 0x400);
+ ssb_write32(dev, 0x400, ssb_read32(dev, 0x400) & ~8);
+ ssb_read32(dev, 0x400);
+
+ /* Change Shim control reg */
+ tmp = ssb_read32(dev, 0x304);
+ tmp &= ~0x100;
+ ssb_write32(dev, 0x304, tmp);
+ tmp = ssb_read32(dev, 0x304);
+ ssb_write32(dev, 0x304, ssb_read32(dev, 0x304) & ~0x100);
+ ssb_read32(dev, 0x304);
+
+ udelay(1);
+
+ /* Work around for 5354 failures */
+ if (dev->id.revision == 2 && dev->bus->chip_id == 0x5354) {
+ /* Change syn01 reg */
+ tmp = 0x00fe00fe;
+ ssb_write32(dev, 0x894, tmp);
+ ssb_hcd_5354wa(dev);
+ }
+}
+
+ /* Change syn03 reg */
+ tmp = ssb_read32(dev, 0x89c);
+ tmp |= 0x1;
+ ssb_write32(dev, 0x89c, tmp);
+ }
+ } else
+ ssb_device_enable(dev, 0);
+/* based on arch/mips/brcm-boards/bcm947xx/pcibios.c */
+static u32 __devinit ssb_hcd_init_chip(struct ssb_device *dev)
+{
+ u32 flags = 0;
+
+ if (dev->id.coreid == SSB_DEV_USB11_HOSTDEV)
+ /* Put the device into host-mode. */
+ flags |= SSB_HCD_TMSLOW_HOSTMODE;
+
+ ssb_device_enable(dev, flags);
+
+ ssb_hcd_usb20wa(dev);
+
+ return flags;
+}
+
+static struct platform_device *ssb_hcd_create_pdev(struct ssb_device *dev,
+ char *name, u32 addr,
+ u32 len)
+static struct platform_device * __devinit
+ssb_hcd_create_pdev(struct ssb_device *dev, char *name, u32 addr, u32 len)
+{
+ 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 + len - 1;
@@ -173,7 +175,6 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+ ret = platform_device_add(hci_dev);
+ if (ret) {
+err_alloc:
+ kfree(hci_res);
+ platform_device_put(hci_dev);
+ return ERR_PTR(ret);
+ }
@@ -181,7 +182,8 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+ return hci_dev;
+}
+
+static int ssb_hcd_probe(struct ssb_device *dev, const struct ssb_device_id *id)
+static int __devinit ssb_hcd_probe(struct ssb_device *dev,
+ const struct ssb_device_id *id)
+{
+ int err, tmp;
+ int start, len;
@@ -241,7 +243,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+ return err;
+}
+
+static void ssb_hcd_remove(struct ssb_device *dev)
+static void __devexit ssb_hcd_remove(struct ssb_device *dev)
+{
+ struct ssb_hcd_device *usb_dev;
+ struct platform_device *ohci_dev;
@@ -264,7 +266,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+ ssb_device_disable(dev, 0);
+}
+
+static void ssb_hcd_shutdown(struct ssb_device *dev)
+static void __devexit ssb_hcd_shutdown(struct ssb_device *dev)
+{
+ ssb_device_disable(dev, 0);
+}
@@ -280,6 +282,8 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+
+static int ssb_hcd_resume(struct ssb_device *dev)
+{
+ struct ssb_hcd_device *usb_dev = ssb_get_drvdata(dev);
+
+ ssb_device_enable(dev, usb_dev->enable_flags);
+
+ return 0;
@@ -290,7 +294,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+#define ssb_hcd_resume NULL
+#endif /* CONFIG_PM */
+
+static const struct ssb_device_id ssb_hcd_table[] = {
+static const struct ssb_device_id ssb_hcd_table[] __devinitconst = {
+ SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOSTDEV, SSB_ANY_REV),
+ SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB11_HOST, SSB_ANY_REV),
+ SSB_DEVICE(SSB_VENDOR_BROADCOM, SSB_DEV_USB20_HOST, SSB_ANY_REV),
@@ -302,7 +306,7 @@ Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+ .name = KBUILD_MODNAME,
+ .id_table = ssb_hcd_table,
+ .probe = ssb_hcd_probe,
+ .remove = ssb_hcd_remove,
+ .remove = __devexit_p(ssb_hcd_remove),
+ .shutdown = ssb_hcd_shutdown,
+ .suspend = ssb_hcd_suspend,
+ .resume = ssb_hcd_resume,