diff options
Diffstat (limited to 'arch/mips/ath79/dev-usb.c')
| -rw-r--r-- | arch/mips/ath79/dev-usb.c | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/arch/mips/ath79/dev-usb.c b/arch/mips/ath79/dev-usb.c new file mode 100644 index 000000000..8227265bc --- /dev/null +++ b/arch/mips/ath79/dev-usb.c @@ -0,0 +1,242 @@ +/* + * Atheros AR7XXX/AR9XXX USB Host Controller device + * + * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * Parts of this file are based on Atheros' 2.6.15 BSP + * + * This program 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/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/irq.h> +#include <linux/dma-mapping.h> +#include <linux/platform_device.h> +#include <linux/usb/ehci_pdriver.h> +#include <linux/usb/ohci_pdriver.h> + +#include <asm/mach-ath79/ath79.h> +#include <asm/mach-ath79/ar71xx_regs.h> +#include "common.h" +#include "dev-usb.h" + +static u64 ath79_usb_dmamask = DMA_BIT_MASK(32); + +static struct usb_ohci_pdata ath79_ohci_pdata = { +}; + +static struct usb_ehci_pdata ath79_ehci_pdata_v1 = { + .has_synopsys_hc_bug = 1, +}; + +static struct usb_ehci_pdata ath79_ehci_pdata_v2 = { + .caps_offset = 0x100, + .has_tt = 1, +}; + +static void __init ath79_usb_register(const char *name, int id, + unsigned long base, unsigned long size, + int irq, const void *data, + size_t data_size) +{ + struct resource res[2]; + struct platform_device *pdev; + + memset(res, 0, sizeof(res)); + + res[0].flags = IORESOURCE_MEM; + res[0].start = base; + res[0].end = base + size - 1; + + res[1].flags = IORESOURCE_IRQ; + res[1].start = irq; + res[1].end = irq; + + pdev = platform_device_register_resndata(NULL, name, id, + res, ARRAY_SIZE(res), + data, data_size); + + if (IS_ERR(pdev)) { + pr_err("ath79: unable to register USB at %08lx, err=%d\n", + base, (int) PTR_ERR(pdev)); + return; + } + + pdev->dev.dma_mask = &ath79_usb_dmamask; + pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); +} + +#define AR71XX_USB_RESET_MASK (AR71XX_RESET_USB_HOST | \ + AR71XX_RESET_USB_PHY | \ + AR71XX_RESET_USB_OHCI_DLL) + +static void __init ath79_usb_setup(void) +{ + void __iomem *usb_ctrl_base; + + ath79_device_reset_set(AR71XX_USB_RESET_MASK); + mdelay(1000); + ath79_device_reset_clear(AR71XX_USB_RESET_MASK); + + usb_ctrl_base = ioremap(AR71XX_USB_CTRL_BASE, AR71XX_USB_CTRL_SIZE); + + /* Turning on the Buff and Desc swap bits */ + __raw_writel(0xf0000, usb_ctrl_base + AR71XX_USB_CTRL_REG_CONFIG); + + /* WAR for HW bug. Here it adjusts the duration between two SOFS */ + __raw_writel(0x20c00, usb_ctrl_base + AR71XX_USB_CTRL_REG_FLADJ); + + iounmap(usb_ctrl_base); + + mdelay(900); + + ath79_usb_register("ohci-platform", -1, + AR71XX_OHCI_BASE, AR71XX_OHCI_SIZE, + ATH79_MISC_IRQ(6), + &ath79_ohci_pdata, sizeof(ath79_ohci_pdata)); + + ath79_usb_register("ehci-platform", -1, + AR71XX_EHCI_BASE, AR71XX_EHCI_SIZE, + ATH79_CPU_IRQ(3), + &ath79_ehci_pdata_v1, sizeof(ath79_ehci_pdata_v1)); +} + +static void __init ar7240_usb_setup(void) +{ + void __iomem *usb_ctrl_base; + + ath79_device_reset_clear(AR7240_RESET_OHCI_DLL); + ath79_device_reset_set(AR7240_RESET_USB_HOST); + + mdelay(1000); + + ath79_device_reset_set(AR7240_RESET_OHCI_DLL); + ath79_device_reset_clear(AR7240_RESET_USB_HOST); + + usb_ctrl_base = ioremap(AR7240_USB_CTRL_BASE, AR7240_USB_CTRL_SIZE); + + /* WAR for HW bug. Here it adjusts the duration between two SOFS */ + __raw_writel(0x3, usb_ctrl_base + AR71XX_USB_CTRL_REG_FLADJ); + + iounmap(usb_ctrl_base); + + ath79_usb_register("ohci-platform", -1, + AR7240_OHCI_BASE, AR7240_OHCI_SIZE, + ATH79_CPU_IRQ(3), + &ath79_ohci_pdata, sizeof(ath79_ohci_pdata)); +} + +static void __init ar724x_usb_setup(void) +{ + ath79_device_reset_set(AR724X_RESET_USBSUS_OVERRIDE); + mdelay(10); + + ath79_device_reset_clear(AR724X_RESET_USB_HOST); + mdelay(10); + + ath79_device_reset_clear(AR724X_RESET_USB_PHY); + mdelay(10); + + ath79_usb_register("ehci-platform", -1, + AR724X_EHCI_BASE, AR724X_EHCI_SIZE, + ATH79_CPU_IRQ(3), + &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2)); +} + +static void __init ar913x_usb_setup(void) +{ + ath79_device_reset_set(AR913X_RESET_USBSUS_OVERRIDE); + mdelay(10); + + ath79_device_reset_clear(AR913X_RESET_USB_HOST); + mdelay(10); + + ath79_device_reset_clear(AR913X_RESET_USB_PHY); + mdelay(10); + + ath79_usb_register("ehci-platform", -1, + AR913X_EHCI_BASE, AR913X_EHCI_SIZE, + ATH79_CPU_IRQ(3), + &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2)); +} + +static void __init ar933x_usb_setup(void) +{ + ath79_device_reset_set(AR933X_RESET_USBSUS_OVERRIDE); + mdelay(10); + + ath79_device_reset_clear(AR933X_RESET_USB_HOST); + mdelay(10); + + ath79_device_reset_clear(AR933X_RESET_USB_PHY); + mdelay(10); + + ath79_usb_register("ehci-platform", -1, + AR933X_EHCI_BASE, AR933X_EHCI_SIZE, + ATH79_CPU_IRQ(3), + &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2)); +} + +static void __init ar934x_usb_setup(void) +{ + u32 bootstrap; + + bootstrap = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP); + if (bootstrap & AR934X_BOOTSTRAP_USB_MODE_DEVICE) + return; + + ath79_device_reset_set(AR934X_RESET_USBSUS_OVERRIDE); + udelay(1000); + + ath79_device_reset_clear(AR934X_RESET_USB_PHY); + udelay(1000); + + ath79_device_reset_clear(AR934X_RESET_USB_PHY_ANALOG); + udelay(1000); + + ath79_device_reset_clear(AR934X_RESET_USB_HOST); + udelay(1000); + + ath79_usb_register("ehci-platform", -1, + AR934X_EHCI_BASE, AR934X_EHCI_SIZE, + ATH79_CPU_IRQ(3), + &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2)); +} + +static void __init qca955x_usb_setup(void) +{ + ath79_usb_register("ehci-platform", 0, + QCA955X_EHCI0_BASE, QCA955X_EHCI_SIZE, + ATH79_IP3_IRQ(0), + &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2)); + + ath79_usb_register("ehci-platform", 1, + QCA955X_EHCI1_BASE, QCA955X_EHCI_SIZE, + ATH79_IP3_IRQ(1), + &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2)); +} + +void __init ath79_register_usb(void) +{ + if (soc_is_ar71xx()) + ath79_usb_setup(); + else if (soc_is_ar7240()) + ar7240_usb_setup(); + else if (soc_is_ar7241() || soc_is_ar7242()) + ar724x_usb_setup(); + else if (soc_is_ar913x()) + ar913x_usb_setup(); + else if (soc_is_ar933x()) + ar933x_usb_setup(); + else if (soc_is_ar934x()) + ar934x_usb_setup(); + else if (soc_is_qca955x()) + qca955x_usb_setup(); + else + BUG(); +} |