diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/usb/host/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-grlib.c | 242 | ||||
| -rw-r--r-- | drivers/usb/host/ehci-hcd.c | 5 | ||||
| -rw-r--r-- | drivers/usb/host/ehci.h | 3 |
5 files changed, 253 insertions, 2 deletions
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index a1b3750cadb..48f1781352f 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -68,6 +68,7 @@ config USB_ARCH_HAS_EHCI default y if PLAT_S5P default y if ARCH_MSM default y if MICROBLAZE + default y if SPARC_LEON default PCI # ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface. diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index fe4beca0000..7dd4c44fabb 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -106,13 +106,13 @@ config USB_EHCI_BIG_ENDIAN_MMIO depends on USB_EHCI_HCD && (PPC_CELLEB || PPC_PS3 || 440EPX || \ ARCH_IXP4XX || XPS_USB_HCD_XILINX || \ PPC_MPC512x || CPU_CAVIUM_OCTEON || \ - PMC_MSP) + PMC_MSP || SPARC_LEON) default y config USB_EHCI_BIG_ENDIAN_DESC bool depends on USB_EHCI_HCD && (440EPX || ARCH_IXP4XX || XPS_USB_HCD_XILINX || \ - PPC_MPC512x || PMC_MSP) + PPC_MPC512x || PMC_MSP || SPARC_LEON) default y config XPS_USB_HCD_XILINX diff --git a/drivers/usb/host/ehci-grlib.c b/drivers/usb/host/ehci-grlib.c new file mode 100644 index 00000000000..93b230dc51a --- /dev/null +++ b/drivers/usb/host/ehci-grlib.c @@ -0,0 +1,242 @@ +/* + * Driver for Aeroflex Gaisler GRLIB GRUSBHC EHCI host controller + * + * GRUSBHC is typically found on LEON/GRLIB SoCs + * + * (c) Jan Andersson <jan@gaisler.com> + * + * Based on ehci-ppc-of.c which is: + * (c) Valentine Barshak <vbarshak@ru.mvista.com> + * and in turn based on "ehci-ppc-soc.c" by Stefan Roese <sr@denx.de> + * and "ohci-ppc-of.c" by Sylvain Munaut <tnt@246tNt.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + + +#include <linux/signal.h> + +#include <linux/of_irq.h> +#include <linux/of_address.h> +#include <linux/of_platform.h> + +#define GRUSBHC_HCIVERSION 0x0100 /* Known value of cap. reg. HCIVERSION */ + +/* called during probe() after chip reset completes */ +static int ehci_grlib_setup(struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + int retval; + + retval = ehci_halt(ehci); + if (retval) + return retval; + + retval = ehci_init(hcd); + if (retval) + return retval; + + ehci->sbrn = 0x20; + ehci_port_power(ehci, 1); + + return ehci_reset(ehci); +} + + +static const struct hc_driver ehci_grlib_hc_driver = { + .description = hcd_name, + .product_desc = "GRLIB GRUSBHC EHCI", + .hcd_priv_size = sizeof(struct ehci_hcd), + + /* + * generic hardware linkage + */ + .irq = ehci_irq, + .flags = HCD_MEMORY | HCD_USB2, + + /* + * basic lifecycle operations + */ + .reset = ehci_grlib_setup, + .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, +#ifdef CONFIG_PM + .bus_suspend = ehci_bus_suspend, + .bus_resume = ehci_bus_resume, +#endif + .relinquish_port = ehci_relinquish_port, + .port_handed_over = ehci_port_handed_over, + + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, +}; + + +static int __devinit ehci_hcd_grlib_probe(struct platform_device *op) +{ + struct device_node *dn = op->dev.of_node; + struct usb_hcd *hcd; + struct ehci_hcd *ehci = NULL; + struct resource res; + u32 hc_capbase; + int irq; + int rv; + + if (usb_disabled()) + return -ENODEV; + + dev_dbg(&op->dev, "initializing GRUSBHC EHCI USB Controller\n"); + + rv = of_address_to_resource(dn, 0, &res); + if (rv) + return rv; + + /* usb_create_hcd requires dma_mask != NULL */ + op->dev.dma_mask = &op->dev.coherent_dma_mask; + hcd = usb_create_hcd(&ehci_grlib_hc_driver, &op->dev, + "GRUSBHC EHCI USB"); + if (!hcd) + return -ENOMEM; + + 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)) { + printk(KERN_ERR "%s: request_mem_region failed\n", __FILE__); + rv = -EBUSY; + goto err_rmr; + } + + irq = irq_of_parse_and_map(dn, 0); + if (irq == NO_IRQ) { + printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__); + rv = -EBUSY; + goto err_irq; + } + + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + if (!hcd->regs) { + printk(KERN_ERR "%s: ioremap failed\n", __FILE__); + rv = -ENOMEM; + goto err_ioremap; + } + + ehci = hcd_to_ehci(hcd); + + ehci->caps = hcd->regs; + + /* determine endianness of this implementation */ + hc_capbase = ehci_readl(ehci, &ehci->caps->hc_capbase); + if (HC_VERSION(ehci, hc_capbase) != GRUSBHC_HCIVERSION) { + ehci->big_endian_mmio = 1; + ehci->big_endian_desc = 1; + ehci->big_endian_capbase = 1; + } + + ehci->regs = hcd->regs + + HC_LENGTH(ehci, ehci_readl(ehci, &ehci->caps->hc_capbase)); + + /* cache this readonly data; minimize chip reads */ + ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); + + rv = usb_add_hcd(hcd, irq, 0); + if (rv) + goto err_ehci; + + return 0; + +err_ehci: + iounmap(hcd->regs); +err_ioremap: + irq_dispose_mapping(irq); +err_irq: + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); +err_rmr: + usb_put_hcd(hcd); + + return rv; +} + + +static int ehci_hcd_grlib_remove(struct platform_device *op) +{ + struct usb_hcd *hcd = dev_get_drvdata(&op->dev); + + dev_set_drvdata(&op->dev, NULL); + + dev_dbg(&op->dev, "stopping GRLIB GRUSBHC EHCI USB Controller\n"); + + usb_remove_hcd(hcd); + + iounmap(hcd->regs); + irq_dispose_mapping(hcd->irq); + release_mem_region(hcd->rsrc_start, hcd->rsrc_len); + + usb_put_hcd(hcd); + + return 0; +} + + +static void ehci_hcd_grlib_shutdown(struct platform_device *op) +{ + struct usb_hcd *hcd = dev_get_drvdata(&op->dev); + + if (hcd->driver->shutdown) + hcd->driver->shutdown(hcd); +} + + +static const struct of_device_id ehci_hcd_grlib_of_match[] = { + { + .name = "GAISLER_EHCI", + }, + { + .name = "01_026", + }, + {}, +}; +MODULE_DEVICE_TABLE(of, ehci_hcd_grlib_of_match); + + +static struct platform_driver ehci_grlib_driver = { + .probe = ehci_hcd_grlib_probe, + .remove = ehci_hcd_grlib_remove, + .shutdown = ehci_hcd_grlib_shutdown, + .driver = { + .name = "grlib-ehci", + .owner = THIS_MODULE, + .of_match_table = ehci_hcd_grlib_of_match, + }, +}; diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 8164ffafd10..c5719cd258c 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1275,6 +1275,11 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER ehci_ath79_driver #endif +#ifdef CONFIG_SPARC_LEON +#include "ehci-grlib.c" +#define PLATFORM_DRIVER ehci_grlib_driver +#endif + #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \ !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \ !defined(XILINX_OF_PLATFORM_DRIVER) diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index d0792f59159..829213423de 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -627,6 +627,9 @@ ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc) #if defined(CONFIG_ARM) && defined(CONFIG_ARCH_IXP4XX) #define readl_be(addr) __raw_readl((__force unsigned *)addr) #define writel_be(val, addr) __raw_writel(val, (__force unsigned *)addr) +#elif defined(CONFIG_SPARC_LEON) +#define readl_be(addr) __raw_readl(addr) +#define writel_be(val, addr) __raw_writel(val, addr) #endif static inline unsigned int ehci_readl(const struct ehci_hcd *ehci, |