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SmartAudio/lichee/brandy/u-boot-2011.09/board/sunxi/usb_probe.c

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2018-07-13 01:31:50 +00:00
/*
* (C) Copyright 2007-2013
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
* Jerry Wang <wangflord@allwinnertech.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* 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 <common.h>
#include <pmu.h>
#include <asm/arch/timer.h>
#include <asm/arch/cpu.h>
#include <asm/arch/intc.h>
#include <asm/io.h>
#include "sunxi_usb_register.h"
struct timer_list timer_for_usb;
static int usb_working = 0;
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static unsigned int usb_get_bus_interrupt_status(void)
{
return readl(SUNXI_USBOTG_BASE + USB_bINTRUSB_OFF) & 0xff;
}
/*
************************************************************************************************************
*
* function
*
* name :
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* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_clear_bus_interrupt_status(unsigned int bm)
{
writel(bm&0xff, SUNXI_USBOTG_BASE + USB_bINTRUSB_OFF);
}
/*
************************************************************************************************************
*
* function
*
* name :
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* parmeters :
*
* return :
*
* note :
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*
************************************************************************************************************
*/
static void usb_drive_vbus(int vbus, int index)
{
unsigned int temp;
//Set PIOH14/15/16 to Output
if(index == 0)
{
temp = readl(0x01c20800+0x100);
temp &= ~(0x7<<24);
temp |= (0x1<<24);
writel(temp, 0x01c20800+0x100);
if(vbus)
{
temp = readl(0x01c20800+0x10c);
temp |= (0x1<<14);
writel(temp, 0x01c20800+0x10c);
}
else
{
temp = readl(0x01c20800+0x10c);
temp &= ~(0x1<<14);
writel(temp, 0x01c20800+0x10c);
}
}
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_force_id(int id)
{
uint temp;
temp = readl(SUNXI_USBOTG_BASE + USB_wISCR_OFF);
temp |= (1 << 15);
if(id)
{
temp |= (1 << 14);
}
else
{
temp &= ~(1 << 14);
}
writel(temp, SUNXI_USBOTG_BASE + USB_wISCR_OFF);
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_high_speed_set(int on_off)
{
uint temp;
temp = readl(SUNXI_USBOTG_BASE + USB_bPOWER_OFF);
if(on_off)
{
temp |= (0x1<<5);
}
else
{
temp &= ~(0x1<<5);
}
writel(temp, SUNXI_USBOTG_BASE + USB_bPOWER_OFF);
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_suspendm_enable(void)
{
uint temp;
temp = readl(SUNXI_USBOTG_BASE + USB_bPOWER_OFF);
temp |= (0x1<<0);
writel(temp, SUNXI_USBOTG_BASE + USB_bPOWER_OFF);
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_vbus_src(int src)
{
uint temp;
temp = readl(SUNXI_USBOTG_BASE + USB_wISCR_OFF);
temp &= ~(0x3<<10);
temp |= ((src&0x03)<<10);
writel(temp, SUNXI_USBOTG_BASE + USB_wISCR_OFF);
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_release_vbus(void)
{
uint temp;
temp = readl(SUNXI_USBOTG_BASE + USB_wISCR_OFF);
temp &= ~(0x3<<12);
writel(temp, SUNXI_USBOTG_BASE + USB_wISCR_OFF);
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_force_vbus(int vbus)
{
uint temp;
temp = readl(SUNXI_USBOTG_BASE + USB_wISCR_OFF);
temp |= (1 << 13);
if(vbus)
{
temp |= (1 << 12);
}
else
{
temp &= ~(1 << 12);
}
writel(temp, SUNXI_USBOTG_BASE + USB_wISCR_OFF);
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_select_ep(int ep_no)
{
uint temp;
temp = readl(SUNXI_USBOTG_BASE + USB_GCS_OFFSET);
temp &= ~(0xff << 16);
writel(ep_no | temp, SUNXI_USBOTG_BASE + USB_GCS_OFFSET);
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_ep0_flush_fifo(void)
{
uint temp;
temp = readl(SUNXI_USBOTG_BASE + USB_hTXMAXP_OFF);
temp |= (0x1<<24);
writel(temp, SUNXI_USBOTG_BASE + USB_hTXMAXP_OFF);
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_clear_bus_interrupt_enable(int bm)
{
uint temp;
temp = readl(SUNXI_USBOTG_BASE + USB_bINTRUSBE_OFF);
temp &= ~(bm&0xff);
writel(temp, SUNXI_USBOTG_BASE + USB_bINTRUSBE_OFF);
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_set_bus_interrupt_enable(int bm)
{
uint temp;
temp = readl(SUNXI_USBOTG_BASE + USB_bINTRUSBE_OFF);
temp |= (bm&0xff);
writel(temp, SUNXI_USBOTG_BASE + USB_bINTRUSBE_OFF);
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_soft_connect(void)
{
uint temp;
temp = readl(SUNXI_USBOTG_BASE + USB_bPOWER_OFF);
temp |= (0x1<<6);
writel(temp, SUNXI_USBOTG_BASE + USB_bPOWER_OFF);
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_clock_init(void)
{
#ifdef CONFIG_ARCH_SUN7I
__u32 temp;
/* AHB gating */
temp = *(volatile unsigned int *)(0x1c20000 + 0x60);
temp |= 0x01;
*(volatile unsigned int *)(0x1c20000 + 0x60) = temp;
__msdelay(1);
/* phy0/1/2 gating */
temp = *(volatile unsigned int *)(0x1c20000 + 0xcc);
temp |= 0x01<<8;
*(volatile unsigned int *)(0x1c20000 + 0xcc) = temp;
__msdelay(1);
/* usb phy0 reset control*/
temp = *(volatile unsigned int *)(0x1c20000 + 0xcc);
temp |= 0x01;
*(volatile unsigned int *)(0x1c20000 + 0xcc) = temp;
__msdelay(1);
return;
#endif
u32 ccmu_base = 0x1c20000;
u32 reg_value = 0;
u32 offset_ahb = 0x60;
u32 offset_ahb_rst = 0x2c0;
u32 offet_phy = 0xcc;
/* AHB gating */
reg_value = readl(ccmu_base + offset_ahb);
reg_value |= (1 << 24);
writel(reg_value, (ccmu_base + offset_ahb));
/* AHB reset */
reg_value = readl(ccmu_base + offset_ahb_rst);
reg_value |= (1 << 24);
writel(reg_value, (ccmu_base + offset_ahb_rst));
__msdelay(1);
/* phy gating */
reg_value = readl(ccmu_base + offet_phy);
reg_value |= (1 << 8);
writel(reg_value, (ccmu_base + offet_phy));
/* phy reset */
reg_value = readl(ccmu_base + offet_phy);
reg_value |= (1 << 0);
writel(reg_value, (ccmu_base + offet_phy));
__msdelay(1);
return;
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_clock_exit(void)
{
#ifdef CONFIG_ARCH_SUN7I
__u32 temp;
/* AHB gating */
temp = *(volatile unsigned int *)(0x1c20000 + 0x60);
temp &= ~0x01;
*(volatile unsigned int *)(0x1c20000 + 0x60) = temp;
__msdelay(1);
/* phy0/1/2 gating */
temp = *(volatile unsigned int *)(0x1c20000 + 0xcc);
temp &= ~(0x01<<8);
*(volatile unsigned int *)(0x1c20000 + 0xcc) = temp;
__msdelay(1);
/* usb phy0 reset control*/
temp = *(volatile unsigned int *)(0x1c20000 + 0xcc);
temp &= ~0x01;
*(volatile unsigned int *)(0x1c20000 + 0xcc) = temp;
__msdelay(1);
return;
#endif
u32 ccmu_base = 0x1c20000;
u32 reg_value = 0;
u32 offset_ahb = 0x60;
u32 offset_ahb_rst = 0x2c0;
u32 offet_phy = 0xcc;
/* AHB gating */
reg_value = readl(ccmu_base + offset_ahb);
reg_value &= ~(1 << 24);
writel(reg_value, (ccmu_base + offset_ahb));
/* AHB reset */
reg_value = readl(ccmu_base + offset_ahb_rst);
reg_value &= ~(1 << 24);
writel(reg_value, (ccmu_base + offset_ahb_rst));
__msdelay(1);
/* phy gating */
reg_value = readl(ccmu_base + offet_phy);
reg_value &= ~(1 << 8);
writel(reg_value, (ccmu_base + offet_phy));
/* phy reset */
reg_value = readl(ccmu_base + offet_phy);
reg_value &= ~(1 << 0);
writel(reg_value, (ccmu_base + offet_phy));
__msdelay(1);
return;
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_init(void)
{
usb_drive_vbus(0, 0);
usb_force_id(1);
usb_high_speed_set(1);
usb_suspendm_enable();
usb_vbus_src(0x1);
usb_release_vbus();
usb_force_vbus(1);
usb_select_ep(0);
usb_ep0_flush_fifo();
debug("USB Device!!\n");
usb_clear_bus_interrupt_enable(0xff);
usb_set_bus_interrupt_enable(0xff);
//usb_set_eptx_interrupt_enable(0x3f);
//usb_set_eprx_interrupt_enable(0x3e);
return;
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void timer_test_usbdc(void *p_arg)
{
usb_clock_exit();
irq_disable(AW_IRQ_USB_OTG);
usb_working = 0;
//<2F>򿪻<EFBFBD>ţ<EFBFBD><C5A3><EFBFBD><EFBFBD>
tick_printf("timer irq ,set dc\n");
axp_set_vbus_limit_dc();
return ;
}
/*
************************************************************************************************************
*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
*
*
************************************************************************************************************
*/
static void usb_detect_irq_handler(void *p_arg)
{
uint temp;
temp = usb_get_bus_interrupt_status();
usb_clear_bus_interrupt_status(temp);
debug("usb irq %x\n", temp);
tick_printf("usb irq %x\n", temp);
if(temp & 0x08)
{
usb_clock_exit();
irq_disable(AW_IRQ_USB_OTG);
del_timer(&timer_for_usb);
usb_working = 0;
//<2F><><EFBFBD><EFBFBD>usb<73><62><EFBFBD><EFBFBD>
tick_printf("usb irq ,set pc\n");
axp_set_vbus_limit_pc();
}
return;
}
/*
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*
* function
*
* name :
*
* parmeters :
*
* return :
*
* note :
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*
************************************************************************************************************
*/
int usb_detect_enter(void)
{
debug("usb start detect\n");
if(!usb_working)
{
tick_printf("usb enter detect\n");
usb_working = 1;
usb_clock_init();
#ifdef CONFIG_ARCH_SUN7I
timer_for_usb.expires = 2000;
#else
timer_for_usb.expires = BOOT_USB_DETECT_DELAY_TIME;
#endif
timer_for_usb.function = timer_test_usbdc;
timer_for_usb.data = 0;
add_timer(&timer_for_usb);
irq_install_handler(AW_IRQ_USB_OTG, usb_detect_irq_handler, 0);
irq_enable(AW_IRQ_USB_OTG);
usb_init();
usb_soft_connect();
}
return 0;
}
/*
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* function
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* name :
*
* parmeters :
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* return :
*
* note :
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************************************************************************************************************
*/
int usb_detect_exit(void)
{
tick_printf("usb exit detect\n");
usb_working = 0;
usb_clock_exit();
irq_disable(AW_IRQ_USB_OTG);
del_timer(&timer_for_usb);
return 0;
}
/*
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*
* function
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* name :
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* parmeters :
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* return :
*
* note :
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************************************************************************************************************
*/
void usb_detect_for_charge(int detect_time)
{
usb_detect_enter();
__msdelay(detect_time);
usb_detect_exit();
}