/* * Platform level USB initialization for FS USB OTG controller on omap1 and 24xx * * Copyright (C) 2004 Texas Instruments, Inc. * * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include #include #include #include #include #include #include #include #include "control.h" #include "mux.h" #define INT_USB_IRQ_GEN INT_24XX_USB_IRQ_GEN #define INT_USB_IRQ_NISO INT_24XX_USB_IRQ_NISO #define INT_USB_IRQ_ISO INT_24XX_USB_IRQ_ISO #define INT_USB_IRQ_HGEN INT_24XX_USB_IRQ_HGEN #define INT_USB_IRQ_OTG INT_24XX_USB_IRQ_OTG #if defined(CONFIG_ARCH_OMAP2) #ifdef CONFIG_USB_GADGET_OMAP static struct resource udc_resources[] = { /* order is significant! */ { /* registers */ .start = UDC_BASE, .end = UDC_BASE + 0xff, .flags = IORESOURCE_MEM, }, { /* general IRQ */ .start = INT_USB_IRQ_GEN, .flags = IORESOURCE_IRQ, }, { /* PIO IRQ */ .start = INT_USB_IRQ_NISO, .flags = IORESOURCE_IRQ, }, { /* SOF IRQ */ .start = INT_USB_IRQ_ISO, .flags = IORESOURCE_IRQ, }, }; static u64 udc_dmamask = ~(u32)0; static struct platform_device udc_device = { .name = "omap_udc", .id = -1, .dev = { .dma_mask = &udc_dmamask, .coherent_dma_mask = 0xffffffff, }, .num_resources = ARRAY_SIZE(udc_resources), .resource = udc_resources, }; static inline void udc_device_init(struct omap_usb_config *pdata) { pdata->udc_device = &udc_device; } #else static inline void udc_device_init(struct omap_usb_config *pdata) { } #endif #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) /* The dmamask must be set for OHCI to work */ static u64 ohci_dmamask = ~(u32)0; static struct resource ohci_resources[] = { { .start = OMAP_OHCI_BASE, .end = OMAP_OHCI_BASE + 0xff, .flags = IORESOURCE_MEM, }, { .start = INT_USB_IRQ_HGEN, .flags = IORESOURCE_IRQ, }, }; static struct platform_device ohci_device = { .name = "ohci", .id = -1, .dev = { .dma_mask = &ohci_dmamask, .coherent_dma_mask = 0xffffffff, }, .num_resources = ARRAY_SIZE(ohci_resources), .resource = ohci_resources, }; static inline void ohci_device_init(struct omap_usb_config *pdata) { pdata->ohci_device = &ohci_device; } #else static inline void ohci_device_init(struct omap_usb_config *pdata) { } #endif #if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG) static struct resource otg_resources[] = { /* order is significant! */ { .start = OTG_BASE, .end = OTG_BASE + 0xff, .flags = IORESOURCE_MEM, }, { .start = INT_USB_IRQ_OTG, .flags = IORESOURCE_IRQ, }, }; static struct platform_device otg_device = { .name = "omap_otg", .id = -1, .num_resources = ARRAY_SIZE(otg_resources), .resource = otg_resources, }; static inline void otg_device_init(struct omap_usb_config *pdata) { pdata->otg_device = &otg_device; } #else static inline void otg_device_init(struct omap_usb_config *pdata) { } #endif static void omap2_usb_devconf_clear(u8 port, u32 mask) { u32 r; r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); r &= ~USBTXWRMODEI(port, mask); omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0); } static void omap2_usb_devconf_set(u8 port, u32 mask) { u32 r; r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); r |= USBTXWRMODEI(port, mask); omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0); } static void omap2_usb2_disable_5pinbitll(void) { u32 r; r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); r &= ~(USBTXWRMODEI(2, USB_BIDIR_TLL) | USBT2TLL5PI); omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0); } static void omap2_usb2_enable_5pinunitll(void) { u32 r; r = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0); r |= USBTXWRMODEI(2, USB_UNIDIR_TLL) | USBT2TLL5PI; omap_ctrl_writel(r, OMAP2_CONTROL_DEVCONF0); } static u32 __init omap2_usb0_init(unsigned nwires, unsigned is_device) { u32 syscon1 = 0; omap2_usb_devconf_clear(0, USB_BIDIR_TLL); if (nwires == 0) return 0; if (is_device) omap_mux_init_signal("usb0_puen", 0); omap_mux_init_signal("usb0_dat", 0); omap_mux_init_signal("usb0_txen", 0); omap_mux_init_signal("usb0_se0", 0); if (nwires != 3) omap_mux_init_signal("usb0_rcv", 0); switch (nwires) { case 3: syscon1 = 2; omap2_usb_devconf_set(0, USB_BIDIR); break; case 4: syscon1 = 1; omap2_usb_devconf_set(0, USB_BIDIR); break; case 6: syscon1 = 3; omap_mux_init_signal("usb0_vp", 0); omap_mux_init_signal("usb0_vm", 0); omap2_usb_devconf_set(0, USB_UNIDIR); break; default: printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", 0, nwires); } return syscon1 << 16; } static u32 __init omap2_usb1_init(unsigned nwires) { u32 syscon1 = 0; omap2_usb_devconf_clear(1, USB_BIDIR_TLL); if (nwires == 0) return 0; /* NOTE: board-specific code must set up pin muxing for usb1, * since each signal could come out on either of two balls. */ switch (nwires) { case 2: /* NOTE: board-specific code must override this setting if * this TLL link is not using DP/DM */ syscon1 = 1; omap2_usb_devconf_set(1, USB_BIDIR_TLL); break; case 3: syscon1 = 2; omap2_usb_devconf_set(1, USB_BIDIR); break; case 4: syscon1 = 1; omap2_usb_devconf_set(1, USB_BIDIR); break; case 6: default: printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", 1, nwires); } return syscon1 << 20; } static u32 __init omap2_usb2_init(unsigned nwires, unsigned alt_pingroup) { u32 syscon1 = 0; omap2_usb2_disable_5pinbitll(); alt_pingroup = 0; /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */ if (alt_pingroup || nwires == 0) return 0; omap_mux_init_signal("usb2_dat", 0); omap_mux_init_signal("usb2_se0", 0); if (nwires > 2) omap_mux_init_signal("usb2_txen", 0); if (nwires > 3) omap_mux_init_signal("usb2_rcv", 0); switch (nwires) { case 2: /* NOTE: board-specific code must override this setting if * this TLL link is not using DP/DM */ syscon1 = 1; omap2_usb_devconf_set(2, USB_BIDIR_TLL); break; case 3: syscon1 = 2; omap2_usb_devconf_set(2, USB_BIDIR); break; case 4: syscon1 = 1; omap2_usb_devconf_set(2, USB_BIDIR); break; case 5: /* NOTE: board-specific code must mux this setting depending * on TLL link using DP/DM. Something must also * set up OTG_SYSCON2.HMC_TLL{ATTACH,SPEED} * 2420: hdq_sio.usb2_tllse0 or vlynq_rx0.usb2_tllse0 * 2430: hdq_sio.usb2_tllse0 or sdmmc2_dat0.usb2_tllse0 */ syscon1 = 3; omap2_usb2_enable_5pinunitll(); break; case 6: default: printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", 2, nwires); } return syscon1 << 24; } void __init omap2_usbfs_init(struct omap_usb_config *pdata) { struct clk *ick; if (!cpu_is_omap24xx()) return; ick = clk_get(NULL, "usb_l4_ick"); if (IS_ERR(ick)) return; clk_enable(ick); pdata->usb0_init = omap2_usb0_init; pdata->usb1_init = omap2_usb1_init; pdata->usb2_init = omap2_usb2_init; udc_device_init(pdata); ohci_device_init(pdata); otg_device_init(pdata); omap_otg_init(pdata); clk_disable(ick); clk_put(ick); } #endif