// SPDX-License-Identifier: GPL-2.0 /* * Broadcom specific Advanced Microcontroller Bus * Broadcom USB - core driver ( BCMA bus glue ) * * Copyright 2011 - 2015 Hauke Mehrtens < hauke @ hauke - m . de > * Copyright 2015 Felix Fietkau < nbd @ openwrt . org > * * Based on ssb - ohci driver * Copyright 2007 Michael Buesch < m @ bues . ch > * * Derived from the OHCI - PCI driver * Copyright 1999 Roman Weissgaerber * Copyright 2000 - 2002 David Brownell * Copyright 1999 Linus Torvalds * Copyright 1999 Gregory P . Smith * * Derived from the USBcore related parts of Broadcom - SB * Copyright 2005 - 2011 Broadcom Corporation #include <linux/bcma/bcma.h>#include <linux/delay.h>#include <linux/gpio/consumer.h>#include <linux/platform_device.h>#include <linux/module.h>#include <linux/slab.h>#include <linux/of.h>#include <linux/of_platform.h>#include <linux/usb/ehci_pdriver.h>#include <linux/usb/ohci_pdriver.h>"Hauke Mehrtens" );"Common USB driver for BCMA Bus" );"GPL" );/* See BCMA_CLKCTLST_EXTRESREQ and BCMA_CLKCTLST_EXTRESST */ #define USB_BCMA_CLKCTLST_USB_CLK_REQ 0 x00000100struct bcma_hcd_device {struct bcma_device *core;struct platform_device *ehci_dev;struct platform_device *ohci_dev;struct gpio_desc *gpio_desc;/* Wait for bitmask in a register to get set or cleared. * timeout is in units of ten - microseconds . static int bcma_wait_bits(struct bcma_device *dev, u16 reg, u32 bitmask,int timeout)int i;for (i = 0 ; i < timeout; i++) {if ((val & bitmask) == bitmask)return 0 ;10 );return -ETIMEDOUT;static void bcma_hcd_4716wa(struct bcma_device *dev)#ifdef CONFIG_BCMA_DRIVER_MIPS/* Work around for 4716 failures. */ if (dev->bus->chipinfo.id == 0 x4716) {if (tmp >= 480000000 )0 x1846b; /* set CDR to 0x11(fast) */ else if (tmp == 453000000 )0 x1046b; /* set CDR to 0x10(slow) */ else 0 ;/* Change Shim mdio control reg to fix host not acking at * high frequencies if (tmp) {0 x524, 0 x1); /* write sel to enable */ 500 );0 x524, tmp);500 );0 x524, 0 x4ab);500 );0 x528);0 x528, 0 x80000000);#endif /* CONFIG_BCMA_DRIVER_MIPS */ /* based on arch/mips/brcm-boards/bcm947xx/pcibios.c */ static void bcma_hcd_init_chip_mips(struct bcma_device *dev)/* * USB 2 . 0 special considerations : * * 1 . Since the core supports both OHCI and EHCI functions , it must * only be reset once . * * 2 . In addition to the standard SI reset sequence , the Host Control * Register must be programmed to bring the USB core and various * phy components out of reset . if (!bcma_core_is_enabled(dev)) {0 );10 );if (dev->id.rev >= 5 ) {/* Enable Misc PLL */ 0 x1e0);0 x100;0 x1e0, tmp);if (bcma_wait_bits(dev, 0 x1e0, 1 << 24 , 100 ))"Failed to enable misc PPL!\n" );/* Take out of resets */ 0 x200, 0 x4ff);25 );0 x200, 0 x6ff);25 );/* Make sure digital and AFE are locked in USB PHY */ 0 x524, 0 x6b);50 );0 x524);50 );0 x524, 0 xab);50 );0 x524);50 );0 x524, 0 x2b);50 );0 x524);50 );0 x524, 0 x10ab);50 );0 x524);if (bcma_wait_bits(dev, 0 x528, 0 xc000, 10000 )) {0 x528);"USB20H mdio_rddata 0x%08x\n" , tmp);0 x528, 0 x80000000);0 x314);265 );0 x200, 0 x7ff);10 );/* Take USB and HSIC out of non-driving modes */ 0 x510, 0 );else {0 x200, 0 x7ff);1 );/* * bcma_hcd_usb20_old_arm_init - Initialize old USB 2 . 0 controller on ARM * * Old USB 2 . 0 core is identified as BCMA_CORE_USB20_HOST and was introduced * long before Northstar devices . It seems some cheaper chipsets like BCM53573 * still use it . * Initialization of this old core differs between MIPS and ARM . static int bcma_hcd_usb20_old_arm_init(struct bcma_hcd_device *usb_dev)struct bcma_device *core = usb_dev->core;struct device *dev = &core->dev;struct bcma_device *pmu_core;10000 , 20000 );if (core->id.rev < 5 )return 0 ;if (!pmu_core) {"Could not find PMU core\n" );return -ENOENT;/* Take USB core out of reset */ 100 , 200 );100 , 200 );0 );100 , 200 );100 , 200 );/* Enable Misc PLL */ 100 , 200 );0 x510, 0 xc7f85000);0 x510, 0 xc7f85003);300 , 600 );/* Program USB PHY PLL parameters */ 0 x6);0 x005360c1);100 , 200 );0 x7);0 x0);100 , 200 );100 , 200 );0 x510, 0 x7f8d007);1000 );/* Take controller out of reset */ 0 x200, 0 x4ff);25 , 50 );0 x200, 0 x6ff);25 , 50 );0 x200, 0 x7ff);25 , 50 );return 0 ;static void bcma_hcd_usb20_ns_init_hc(struct bcma_device *dev)/* Set packet buffer OUT threshold */ 0 x94);0 xffff;0 x80 << 16 ;0 x94, val);/* Enable break memory transfer */ 0 x9c);1 ;0 x9c, val);/* * Broadcom initializes PHY and then waits to ensure HC is ready to be * configured . In our case the order is reversed . We just initialized * controller and we let HCD initialize PHY , so let ' s wait ( sleep ) now . 1000 , 2000 );/* * bcma_hcd_usb20_ns_init - Initialize Northstar USB 2 . 0 controller static int bcma_hcd_usb20_ns_init(struct bcma_hcd_device *bcma_hcd)struct bcma_device *core = bcma_hcd->core;struct bcma_chipinfo *ci = &core->bus->chipinfo;struct device *dev = &core->dev;0 );if (ci->id == BCMA_CHIP_ID_BCM4707 ||return 0 ;static void bcma_hci_platform_power_gpio(struct bcma_device *dev, bool val)struct bcma_hcd_device *usb_dev = bcma_get_drvdata(dev);if (!usb_dev->gpio_desc)return ;static const struct usb_ehci_pdata ehci_pdata = {static const struct usb_ohci_pdata ohci_pdata = {static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev,const char *name, u32 addr,const void *data,struct platform_device *hci_dev;struct resource hci_res[2 ];int ret;0 , sizeof (hci_res));0 ].start = addr;0 ].end = hci_res[0 ].start + 0 x1000 - 1 ;0 ].flags = IORESOURCE_MEM;1 ].start = dev->irq;1 ].flags = IORESOURCE_IRQ;0 );if (!hci_dev)return ERR_PTR(-ENOMEM);if (ret)goto err_alloc;if (data)if (ret)goto err_alloc;if (ret)goto err_alloc;return hci_dev;return ERR_PTR(ret);static int bcma_hcd_usb20_init(struct bcma_hcd_device *usb_dev)struct bcma_device *dev = usb_dev->core;struct bcma_chipinfo *chipinfo = &dev->bus->chipinfo;int err;if (dma_set_mask_and_coherent(dev->dma_dev, DMA_BIT_MASK(32 )))return -EOPNOTSUPP;/* In AI chips EHCI is addrspace 0, OHCI is 1 */ 0 ];if ((chipinfo->id == BCMA_CHIP_ID_BCM5357 ||0 )0 x18009000;"ohci-platform" ,sizeof (ohci_pdata));if (IS_ERR(usb_dev->ohci_dev))return PTR_ERR(usb_dev->ohci_dev);"ehci-platform" ,sizeof (ehci_pdata));if (IS_ERR(usb_dev->ehci_dev)) {goto err_unregister_ohci_dev;return 0 ;return err;static int bcma_hcd_usb30_init(struct bcma_hcd_device *bcma_hcd)struct bcma_device *core = bcma_hcd->core;struct device *dev = &core->dev;0 );return 0 ;static int bcma_hcd_probe(struct bcma_device *core)int err;struct bcma_hcd_device *usb_dev;/* TODO: Probably need checks here; is the core connected? */ sizeof (struct bcma_hcd_device),if (!usb_dev)return -ENOMEM;"vcc" ,if (IS_ERR(usb_dev->gpio_desc))return dev_err_probe(&core->dev, PTR_ERR(usb_dev->gpio_desc),"error obtaining VCC GPIO" );switch (core->id.id) {case BCMA_CORE_USB20_HOST:if (IS_ENABLED(CONFIG_ARM))else if (IS_ENABLED(CONFIG_MIPS))else break ;case BCMA_CORE_NS_USB20:break ;case BCMA_CORE_NS_USB30:break ;default :return -ENODEV;if (err)return err;return 0 ;static void bcma_hcd_remove(struct bcma_device *dev)struct bcma_hcd_device *usb_dev = bcma_get_drvdata(dev);struct platform_device *ohci_dev = usb_dev->ohci_dev;struct platform_device *ehci_dev = usb_dev->ehci_dev;if (ohci_dev)if (ehci_dev)0 );static void bcma_hcd_shutdown(struct bcma_device *dev)false );0 );#ifdef CONFIG_PMstatic int bcma_hcd_suspend(struct bcma_device *dev)false );0 );return 0 ;static int bcma_hcd_resume(struct bcma_device *dev)true );0 );return 0 ;#else /* !CONFIG_PM */ #define bcma_hcd_suspend NULL#define bcma_hcd_resume NULL#endif /* CONFIG_PM */ static const struct bcma_device_id bcma_hcd_table[] = {static struct bcma_driver bcma_hcd_driver = {
Messung V0.5 in Prozent C=95 H=94 G=94
¤ Diese beiden folgenden Angebotsgruppen bietet das Unternehmen0.1Angebot
(Wie Sie bei der Firma Beratungs- und Dienstleistungen beauftragen können 2026-09-29)
¤ *Eine klare Vorstellung vom Zielzustand
