diff options
Diffstat (limited to 'target/linux/cns21xx/patches-3.8/104-cns21xx-usb-ehci-support.patch')
| -rw-r--r-- | target/linux/cns21xx/patches-3.8/104-cns21xx-usb-ehci-support.patch | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/target/linux/cns21xx/patches-3.8/104-cns21xx-usb-ehci-support.patch b/target/linux/cns21xx/patches-3.8/104-cns21xx-usb-ehci-support.patch new file mode 100644 index 000000000..d9b917074 --- /dev/null +++ b/target/linux/cns21xx/patches-3.8/104-cns21xx-usb-ehci-support.patch @@ -0,0 +1,214 @@ +--- a/drivers/usb/host/ehci-hcd.c ++++ b/drivers/usb/host/ehci-hcd.c +@@ -1342,6 +1342,11 @@ MODULE_LICENSE ("GPL"); + #define PLATFORM_DRIVER ehci_hcd_sead3_driver + #endif + ++#ifdef CONFIG_ARCH_CNS21XX ++#include "ehci-cns21xx.c" ++#define PLATFORM_DRIVER ehci_cns21xx_driver ++#endif ++ + #if !IS_ENABLED(CONFIG_USB_EHCI_PCI) && \ + !IS_ENABLED(CONFIG_USB_EHCI_HCD_PLATFORM) && \ + !IS_ENABLED(CONFIG_USB_CHIPIDEA_HOST) && \ +--- /dev/null ++++ b/drivers/usb/host/ehci-cns21xx.c +@@ -0,0 +1,187 @@ ++/* ++ * 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 <linux/irq.h> ++ ++#include <mach/cns21xx.h> ++ ++#define DRIVER_NAME "cns21xx-ehci" ++ ++static int cns21xx_ehci_reset(struct usb_hcd *hcd) ++{ ++ struct ehci_hcd *ehci = hcd_to_ehci(hcd); ++ int ret; ++ ++ ret = ehci_halt(ehci); ++ if (ret) ++ return ret; ++ ++ ret = ehci_init(hcd); ++ if (ret) ++ return ret; ++ ++ ehci_reset(ehci); ++ ++ return 0; ++} ++ ++static const struct hc_driver ehci_cns21xx_hc_driver = { ++ .description = hcd_name, ++ .product_desc = DRIVER_NAME, ++ .hcd_priv_size = sizeof(struct ehci_hcd), ++ ++ /* ++ * generic hardware linkage ++ */ ++ .irq = ehci_irq, ++ .flags = HCD_MEMORY | HCD_USB2, ++ ++ /* ++ * basic lifecycle operations ++ */ ++ .reset = cns21xx_ehci_reset, ++ .start = ehci_run, ++ .stop = ehci_stop, ++ .shutdown = ehci_shutdown, ++ ++ /* ++ * managing i/o requests and associated device resources ++ */ ++ .urb_enqueue = ehci_urb_enqueue, ++ .urb_dequeue = ehci_urb_dequeue, ++ .endpoint_disable = ehci_endpoint_disable, ++ .endpoint_reset = ehci_endpoint_reset, ++ ++ /* ++ * scheduling support ++ */ ++ .get_frame_number = ehci_get_frame, ++ ++ /* ++ * root hub support ++ */ ++ .hub_status_data = ehci_hub_status_data, ++ .hub_control = ehci_hub_control, ++ .relinquish_port = ehci_relinquish_port, ++ .port_handed_over = ehci_port_handed_over, ++ ++ .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, ++}; ++ ++static void cns21xx_ehci_init_hc(void) ++{ ++ void __iomem *base = (void __iomem *) CNS21XX_EHCI_CONFIG_BASE_VIRT; ++ ++ __raw_writel(0x106, base + 0x04); ++ __raw_writel((3 << 5) | 0x2000, base + 0x40); ++ msleep(100); ++} ++ ++static int ehci_cns21xx_probe(struct platform_device *pdev) ++{ ++ struct usb_hcd *hcd; ++ struct ehci_hcd *ehci; ++ struct resource *res; ++ 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(&ehci_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_ehci_init_hc(); ++ ++ ehci = hcd_to_ehci(hcd); ++ ++ ehci->caps = hcd->regs; ++ ehci->regs = hcd->regs + ++ HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); ++ dbg_hcs_params(ehci, "reset"); ++ dbg_hcc_params(ehci, "reset"); ++ ++ /* cache this readonly data; minimize chip reads */ ++ ehci->hcs_params = readl(&ehci->caps->hcs_params); ++ ehci->sbrn = 0x20; ++ ++ ret = usb_add_hcd(hcd, CNS21XX_IRQ_EHCI, 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 ehci_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 ehci_cns21xx_driver = { ++ .probe = ehci_cns21xx_probe, ++ .remove = ehci_cns21xx_remove, ++ .shutdown = usb_hcd_platform_shutdown, ++ .driver = { ++ .owner = THIS_MODULE, ++ .name = DRIVER_NAME, ++ }, ++}; ++ ++MODULE_ALIAS("platform:" DRIVER_NAME); +--- a/arch/arm/Kconfig ++++ b/arch/arm/Kconfig +@@ -382,6 +382,7 @@ config ARCH_CNS21XX + select ARCH_REQUIRE_GPIOLIB + select ARM_L1_CACHE_SHIFT_4 + select USB_ARCH_HAS_OHCI ++ select USB_ARCH_HAS_EHCI + help + Support for Cavium Networks CNS21xx family. + |