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usb: use GPIO session for configuration

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This fixes the issue of conflicting base-address attachment between USB
and GPIO.

Fixes #1732
This commit is contained in:
Alexy Gallardo Segura 2015-10-05 15:08:08 -04:00 committed by Christian Helmuth
parent e8b4e0be6d
commit 7f1641e460
1 changed files with 10 additions and 75 deletions
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85
repos/dde_linux/src/lib/usb/spec/odroid_x2/platform.cc
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@ -23,6 +23,7 @@
#include <timer_session/connection.h>
#include <irq_session/connection.h>
#include <util/mmio.h>
#include <gpio_session/connection.h>
/* Emulation */
#include <platform/platform.h>
@ -72,22 +73,6 @@ struct Ehci : Genode::Mmio
};
};
/**
* Gpio ETC6 register handling
*/
struct Etc6 : Genode::Mmio
{
Etc6(Genode::addr_t base):Genode::Mmio (base)
{
unsigned int value;
value = read<Pud>();
write<Pud>((value & ~(0x3 << 14)) | (0x3 << 14));
value = read<Pud>();
}
struct Pud : Register<0x0228, 16>{};
};
/**
* USB OTG handling
*/
@ -138,58 +123,8 @@ struct Usb_Otg : Genode::Mmio
struct Rstcon : Register <0x8,32>{};
};
/**
* Gpio handling
*/
class Gpio_bank : Genode::Mmio
{
public:
Gpio_bank(Genode::addr_t base):Genode::Mmio (base){}
struct Con : Register<0x0C60, 32>{};
struct Dat : Register<0x0C64, 32>{};
void setDirection(int gpio , int en)
{
unsigned int value;
enum { GPIO_OUTPUT = 0x1 };
value = read<Dat>();
value &= ~(0x1 << gpio);
if (en)
value |= 0x1 << gpio;
write<Dat>(value);
configurePin(gpio, GPIO_OUTPUT);
write<Dat>(value);
}
private:
void configurePin(int gpio, int cfg)
{
unsigned int value;
value = read<Con>();
value &= ~con_mask(gpio);
value |= con_sfr(gpio, cfg);
write<Con>(value);
}
static inline
unsigned con_mask(unsigned val) { return 0xf << ((val) << 2); }
static inline
unsigned con_sfr(unsigned x, unsigned v) { return (v) << ((x) << 2); }
};
static void clock_pwr_init()
{
/*Initialization of register etc6*/
Io_mem_connection io_gpio(GPIO_BASE, 0x1000);
addr_t gpio_base = (addr_t)env()->rm_session()->attach(io_gpio.dataspace());
Etc6 etc6(gpio_base);
env()->rm_session()->detach(gpio_base);
/* enable USB2 clock and power up */
static Regulator::Connection reg_clk(Regulator::CLK_USB20);
reg_clk.state(true);
@ -212,21 +147,21 @@ static void odroidx2_ehci_init()
usb_phy_init();
/* reset hub via GPIO */
Io_mem_connection io_gpio(GPIO_BASE, 0x1000);
addr_t gpio_base = (addr_t)env()->rm_session()->attach(io_gpio.dataspace());
enum { X30 = 294, X34 = 298, X35 = 299 };
Gpio_bank x3(gpio_base);
Gpio::Connection gpio_x30(X30);
Gpio::Connection gpio_x34(X34);
Gpio::Connection gpio_x35(X35);
/* Set Ref freq 0 => 24MHz, 1 => 26MHz*/
/* Odroid Us have it at 24MHz, Odroid Xs at 26MHz */
x3.setDirection(0,1);
gpio_x30.write(true);
/* Disconnect, Reset, Connect */
x3.setDirection(4,0);
x3.setDirection(5,0);
x3.setDirection(5,1);
x3.setDirection(4,1);
env()->rm_session()->detach(gpio_base);
gpio_x34.write(false);
gpio_x35.write(false);
gpio_x35.write(true);
gpio_x34.write(true);
/* reset ehci controller */
Io_mem_connection io_ehci(EHCI_BASE, 0x1000);