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[POWERPC] 83xx: USB platform code rework
Add 831x USB platform setup code and rework 834x USB platform setup code. Move USB platform code to usb.c for different boards with CPU of the same series to share the USB initialization code. Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Kim Phillips <kim.phillips@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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Li Yang
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Jul 10, 2007
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,181 @@ | ||
| /* | ||
| * Freescale 83xx USB SOC setup code | ||
| * | ||
| * Copyright (C) 2007 Freescale Semiconductor, Inc. | ||
| * Author: Li Yang | ||
| * | ||
| * 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. | ||
| */ | ||
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| #include <linux/stddef.h> | ||
| #include <linux/kernel.h> | ||
| #include <linux/errno.h> | ||
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| #include <asm/io.h> | ||
| #include <asm/prom.h> | ||
| #include <sysdev/fsl_soc.h> | ||
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| #include "mpc83xx.h" | ||
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| #ifdef CONFIG_MPC834x | ||
| int mpc834x_usb_cfg(void) | ||
| { | ||
| unsigned long sccr, sicrl, sicrh; | ||
| void __iomem *immap; | ||
| struct device_node *np = NULL; | ||
| int port0_is_dr = 0, port1_is_dr = 0; | ||
| const void *prop, *dr_mode; | ||
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| immap = ioremap(get_immrbase(), 0x1000); | ||
| if (!immap) | ||
| return -ENOMEM; | ||
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| /* Read registers */ | ||
| /* Note: DR and MPH must use the same clock setting in SCCR */ | ||
| sccr = in_be32(immap + MPC83XX_SCCR_OFFS) & ~MPC83XX_SCCR_USB_MASK; | ||
| sicrl = in_be32(immap + MPC83XX_SICRL_OFFS) & ~MPC834X_SICRL_USB_MASK; | ||
| sicrh = in_be32(immap + MPC83XX_SICRH_OFFS) & ~MPC834X_SICRH_USB_UTMI; | ||
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| np = of_find_compatible_node(NULL, "usb", "fsl-usb2-dr"); | ||
| if (np) { | ||
| sccr |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */ | ||
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| prop = of_get_property(np, "phy_type", NULL); | ||
| if (prop && (!strcmp(prop, "utmi") || | ||
| !strcmp(prop, "utmi_wide"))) { | ||
| sicrl |= MPC834X_SICRL_USB0 | MPC834X_SICRL_USB1; | ||
| sicrh |= MPC834X_SICRH_USB_UTMI; | ||
| port1_is_dr = 1; | ||
| } else if (prop && !strcmp(prop, "serial")) { | ||
| dr_mode = of_get_property(np, "dr_mode", NULL); | ||
| if (dr_mode && !strcmp(dr_mode, "otg")) { | ||
| sicrl |= MPC834X_SICRL_USB0 | MPC834X_SICRL_USB1; | ||
| port1_is_dr = 1; | ||
| } else { | ||
| sicrl |= MPC834X_SICRL_USB0; | ||
| } | ||
| } else if (prop && !strcmp(prop, "ulpi")) { | ||
| sicrl |= MPC834X_SICRL_USB0; | ||
| } else { | ||
| printk(KERN_WARNING "834x USB PHY type not supported\n"); | ||
| } | ||
| port0_is_dr = 1; | ||
| of_node_put(np); | ||
| } | ||
| np = of_find_compatible_node(NULL, "usb", "fsl-usb2-mph"); | ||
| if (np) { | ||
| sccr |= MPC83XX_SCCR_USB_MPHCM_11; /* 1:3 */ | ||
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| prop = of_get_property(np, "port0", NULL); | ||
| if (prop) { | ||
| if (port0_is_dr) | ||
| printk(KERN_WARNING | ||
| "834x USB port0 can't be used by both DR and MPH!\n"); | ||
| sicrl |= MPC834X_SICRL_USB0; | ||
| } | ||
| prop = of_get_property(np, "port1", NULL); | ||
| if (prop) { | ||
| if (port1_is_dr) | ||
| printk(KERN_WARNING | ||
| "834x USB port1 can't be used by both DR and MPH!\n"); | ||
| sicrl |= MPC834X_SICRL_USB1; | ||
| } | ||
| of_node_put(np); | ||
| } | ||
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| /* Write back */ | ||
| out_be32(immap + MPC83XX_SCCR_OFFS, sccr); | ||
| out_be32(immap + MPC83XX_SICRL_OFFS, sicrl); | ||
| out_be32(immap + MPC83XX_SICRH_OFFS, sicrh); | ||
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| iounmap(immap); | ||
| return 0; | ||
| } | ||
| #endif /* CONFIG_MPC834x */ | ||
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| #ifdef CONFIG_PPC_MPC831x | ||
| int mpc831x_usb_cfg(void) | ||
| { | ||
| u32 temp; | ||
| void __iomem *immap, *usb_regs; | ||
| struct device_node *np = NULL; | ||
| const void *prop; | ||
| struct resource res; | ||
| int ret = 0; | ||
| #ifdef CONFIG_USB_OTG | ||
| const void *dr_mode; | ||
| #endif | ||
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| np = of_find_compatible_node(NULL, "usb", "fsl-usb2-dr"); | ||
| if (!np) | ||
| return -ENODEV; | ||
| prop = of_get_property(np, "phy_type", NULL); | ||
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| /* Map IMMR space for pin and clock settings */ | ||
| immap = ioremap(get_immrbase(), 0x1000); | ||
| if (!immap) { | ||
| of_node_put(np); | ||
| return -ENOMEM; | ||
| } | ||
|
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| /* Configure clock */ | ||
| temp = in_be32(immap + MPC83XX_SCCR_OFFS); | ||
| temp &= ~MPC83XX_SCCR_USB_MASK; | ||
| temp |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */ | ||
| out_be32(immap + MPC83XX_SCCR_OFFS, temp); | ||
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| /* Configure pin mux for ULPI. There is no pin mux for UTMI */ | ||
| if (!strcmp(prop, "ulpi")) { | ||
| temp = in_be32(immap + MPC83XX_SICRL_OFFS); | ||
| temp &= ~MPC831X_SICRL_USB_MASK; | ||
| temp |= MPC831X_SICRL_USB_ULPI; | ||
| out_be32(immap + MPC83XX_SICRL_OFFS, temp); | ||
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| temp = in_be32(immap + MPC83XX_SICRH_OFFS); | ||
| temp &= ~MPC831X_SICRH_USB_MASK; | ||
| temp |= MPC831X_SICRH_USB_ULPI; | ||
| out_be32(immap + MPC83XX_SICRH_OFFS, temp); | ||
| } | ||
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| iounmap(immap); | ||
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| /* Map USB SOC space */ | ||
| ret = of_address_to_resource(np, 0, &res); | ||
| if (ret) { | ||
| of_node_put(np); | ||
| return ret; | ||
| } | ||
| usb_regs = ioremap(res.start, res.end - res.start + 1); | ||
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| /* Using on-chip PHY */ | ||
| if (!strcmp(prop, "utmi_wide") || | ||
| !strcmp(prop, "utmi")) { | ||
| /* Set UTMI_PHY_EN, REFSEL to 48MHZ */ | ||
| out_be32(usb_regs + FSL_USB2_CONTROL_OFFS, | ||
| CONTROL_UTMI_PHY_EN | CONTROL_REFSEL_48MHZ); | ||
| /* Using external UPLI PHY */ | ||
| } else if (!strcmp(prop, "ulpi")) { | ||
| /* Set PHY_CLK_SEL to ULPI */ | ||
| temp = CONTROL_PHY_CLK_SEL_ULPI; | ||
| #ifdef CONFIG_USB_OTG | ||
| /* Set OTG_PORT */ | ||
| dr_mode = of_get_property(np, "dr_mode", NULL); | ||
| if (dr_mode && !strcmp(dr_mode, "otg")) | ||
| temp |= CONTROL_OTG_PORT; | ||
| #endif /* CONFIG_USB_OTG */ | ||
| out_be32(usb_regs + FSL_USB2_CONTROL_OFFS, temp); | ||
| } else { | ||
| printk(KERN_WARNING "831x USB PHY type not supported\n"); | ||
| ret = -EINVAL; | ||
| } | ||
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| iounmap(usb_regs); | ||
| of_node_put(np); | ||
| return ret; | ||
| } | ||
| #endif /* CONFIG_PPC_MPC831x */ |