diff options
Diffstat (limited to 'target/linux/cns21xx/patches-3.8/103-cns21xx-usb-ohci-support.patch')
| -rw-r--r-- | target/linux/cns21xx/patches-3.8/103-cns21xx-usb-ohci-support.patch | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/target/linux/cns21xx/patches-3.8/103-cns21xx-usb-ohci-support.patch b/target/linux/cns21xx/patches-3.8/103-cns21xx-usb-ohci-support.patch new file mode 100644 index 0000000000..ea2a2aab9c --- /dev/null +++ b/target/linux/cns21xx/patches-3.8/103-cns21xx-usb-ohci-support.patch @@ -0,0 +1,225 @@ +--- a/drivers/usb/host/ohci-hcd.c ++++ b/drivers/usb/host/ohci-hcd.c +@@ -691,6 +691,9 @@ retry: + + periodic_reinit (ohci); + ++ if (ohci->flags & OHCI_QUIRK_INIT_FMINTERVAL) ++ ohci_writel (ohci, ohci->fminterval, &ohci->regs->fminterval); ++ + /* some OHCI implementations are finicky about how they init. + * bogus values here mean not even enumeration could work. + */ +@@ -1186,6 +1189,11 @@ MODULE_LICENSE ("GPL"); + #define PLATFORM_DRIVER ohci_hcd_tilegx_driver + #endif + ++#ifdef CONFIG_ARCH_CNS21XX ++#include "ohci-cns21xx.c" ++#define PLATFORM_DRIVER ohci_cns21xx_driver ++#endif ++ + #ifdef CONFIG_USB_OHCI_HCD_PLATFORM + #include "ohci-platform.c" + #define OHCI_PLATFORM_DRIVER ohci_platform_driver +--- /dev/null ++++ b/drivers/usb/host/ohci-cns21xx.c +@@ -0,0 +1,178 @@ ++/* ++ * Copyright (c) 2008 Cavium Networks ++ * Copyright (c) 2010-2012 Gabor Juhos <juhosg@openwrt.org> ++ * ++ * This file is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License, Version 2, as ++ * published by the Free Software Foundation. ++ */ ++ ++#include <linux/platform_device.h> ++ ++#include <mach/cns21xx.h> ++ ++#define DRIVER_NAME "cns21xx-ohci" ++ ++static int cns21xx_ohci_start(struct usb_hcd *hcd) ++{ ++ struct ohci_hcd *ohci = hcd_to_ohci(hcd); ++ int ret; ++ ++ ret = ohci_init(ohci); ++ if (ret) ++ return ret; ++ ++ ret = ohci_run(ohci); ++ if (ret) { ++ ohci_err(ohci, "can't start %s", ++ ohci_to_hcd(ohci)->self.bus_name); ++ goto err; ++ } ++ ++ return 0; ++ ++err: ++ ohci_stop(hcd); ++ return ret; ++} ++ ++static const struct hc_driver ohci_cns21xx_hc_driver = { ++ .description = hcd_name, ++ .product_desc = "cns21xx-ohci", ++ .hcd_priv_size = sizeof(struct ohci_hcd), ++ ++ /* ++ * generic hardware linkage ++ */ ++ .irq = ohci_irq, ++ .flags = HCD_USB11 | HCD_MEMORY, ++ ++ /* ++ * basic lifecycle operations ++ */ ++ .start = cns21xx_ohci_start, ++ .stop = ohci_stop, ++ .shutdown = ohci_shutdown, ++ ++ /* ++ * managing i/o requests and associated device resources ++ */ ++ .urb_enqueue = ohci_urb_enqueue, ++ .urb_dequeue = ohci_urb_dequeue, ++ .endpoint_disable = ohci_endpoint_disable, ++ ++ /* ++ * scheduling support ++ */ ++ .get_frame_number = ohci_get_frame, ++ ++ /* ++ * root hub support ++ */ ++ .hub_status_data = ohci_hub_status_data, ++ .hub_control = ohci_hub_control, ++ .start_port_reset = ohci_start_port_reset, ++}; ++ ++static void cns21xx_ohci_init_hc(void) ++{ ++ void __iomem *base = (void __iomem *) CNS21XX_OHCI_CONFIG_BASE_VIRT; ++ ++ __raw_writel(0x146, base + 0x04); ++ __raw_writel(0x200, base + 0x44); ++ msleep(100); ++} ++ ++static int ohci_cns21xx_probe(struct platform_device *pdev) ++{ ++ struct usb_hcd *hcd; ++ struct resource *res; ++ struct ohci_hcd *ohci; ++ int irq; ++ int ret; ++ ++ if (usb_disabled()) ++ return -ENODEV; ++ ++ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); ++ if (!res) { ++ dev_dbg(&pdev->dev, "no IRQ specified for %s\n", ++ dev_name(&pdev->dev)); ++ return -ENODEV; ++ } ++ irq = res->start; ++ ++ hcd = usb_create_hcd(&ohci_cns21xx_hc_driver, &pdev->dev, ++ dev_name(&pdev->dev)); ++ if (!hcd) ++ return -ENOMEM; ++ ++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); ++ if (!res) { ++ dev_dbg(&pdev->dev, "no base address specified for %s\n", ++ dev_name(&pdev->dev)); ++ ret = -ENODEV; ++ goto err_put_hcd; ++ } ++ hcd->rsrc_start = res->start; ++ hcd->rsrc_len = res->end - res->start + 1; ++ ++ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { ++ dev_dbg(&pdev->dev, "controller already in use\n"); ++ ret = -EBUSY; ++ goto err_put_hcd; ++ } ++ ++ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); ++ if (!hcd->regs) { ++ dev_dbg(&pdev->dev, "error mapping memory\n"); ++ ret = -EFAULT; ++ goto err_release_region; ++ } ++ ++ cns21xx_ohci_init_hc(); ++ ++ ohci = hcd_to_ohci(hcd); ++ ohci->flags |= OHCI_QUIRK_INIT_FMINTERVAL; ++ ohci_hcd_init(ohci); ++ ++ ret = usb_add_hcd(hcd, irq, IRQF_DISABLED); ++ if (ret) ++ goto err_unmap; ++ ++ platform_set_drvdata(pdev, hcd); ++ return 0; ++ ++err_unmap: ++ iounmap(hcd->regs); ++err_release_region: ++ release_mem_region(hcd->rsrc_start, hcd->rsrc_len); ++err_put_hcd: ++ usb_put_hcd(hcd); ++ return ret; ++} ++ ++static int ohci_cns21xx_remove(struct platform_device *pdev) ++{ ++ struct usb_hcd *hcd = platform_get_drvdata(pdev); ++ ++ usb_remove_hcd(hcd); ++ iounmap(hcd->regs); ++ release_mem_region(hcd->rsrc_start, hcd->rsrc_len); ++ usb_put_hcd(hcd); ++ platform_set_drvdata(pdev, NULL); ++ ++ return 0; ++} ++ ++static struct platform_driver ohci_cns21xx_driver = { ++ .probe = ohci_cns21xx_probe, ++ .remove = ohci_cns21xx_remove, ++ .shutdown = usb_hcd_platform_shutdown, ++ .driver = { ++ .owner = THIS_MODULE, ++ .name = DRIVER_NAME, ++ }, ++}; ++ ++MODULE_ALIAS("platform:" DRIVER_NAME); +--- a/drivers/usb/host/ohci.h ++++ b/drivers/usb/host/ohci.h +@@ -405,6 +405,7 @@ struct ohci_hcd { + #define OHCI_QUIRK_HUB_POWER 0x100 /* distrust firmware power/oc setup */ + #define OHCI_QUIRK_AMD_PLL 0x200 /* AMD PLL quirk*/ + #define OHCI_QUIRK_AMD_PREFETCH 0x400 /* pre-fetch for ISO transfer */ ++#define OHCI_QUIRK_INIT_FMINTERVAL 0x1000 /* fminterval must be initialized */ + // there are also chip quirks/bugs in init logic + + struct work_struct nec_work; /* Worker for NEC quirk */ +--- a/arch/arm/Kconfig ++++ b/arch/arm/Kconfig +@@ -381,6 +381,7 @@ config ARCH_CNS21XX + select PLAT_FA_GPIO + select ARCH_REQUIRE_GPIOLIB + select ARM_L1_CACHE_SHIFT_4 ++ select USB_ARCH_HAS_OHCI + help + Support for Cavium Networks CNS21xx family. + |