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sunxi: usbc: Add support for usb-vbus0 controller by axp drivebus pin

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The axp221 / axp223's N_VBUSEN pin can be configured as an output rather
then an input, and this is used on some boards to control usb-vbus0, add
support for this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Hans de Goede 2015-01-11 19:33:35 +01:00
parent 4458b7a6e1
commit a90e77dbeb
1 changed files with 26 additions and 0 deletions
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26
arch/arm/cpu/armv7/sunxi/usbc.c
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@ -17,6 +17,15 @@
#include <asm/gpio.h>
#include <asm/io.h>
#include <common.h>
#ifdef CONFIG_AXP152_POWER
#include <axp152.h>
#endif
#ifdef CONFIG_AXP209_POWER
#include <axp209.h>
#endif
#ifdef CONFIG_AXP221_POWER
#include <axp221.h>
#endif
#define SUNXI_USB_PMU_IRQ_ENABLE 0x800
#define SUNXI_USB_CSR 0x404
@ -71,6 +80,12 @@ static struct sunxi_usbc_hcd {
static int enabled_hcd_count;
static bool use_axp_drivebus(int index)
{
return index == 0 &&
strcmp(CONFIG_USB0_VBUS_PIN, "axp_drivebus") == 0;
}
void *sunxi_usbc_get_io_base(int index)
{
switch (index) {
@ -87,6 +102,9 @@ void *sunxi_usbc_get_io_base(int index)
static int get_vbus_gpio(int index)
{
if (use_axp_drivebus(index))
return -1;
switch (index) {
case 0: return sunxi_name_to_gpio(CONFIG_USB0_VBUS_PIN);
case 1: return sunxi_name_to_gpio(CONFIG_USB1_VBUS_PIN);
@ -233,6 +251,10 @@ void sunxi_usbc_vbus_enable(int index)
{
struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
#ifdef AXP_DRIVEBUS
if (use_axp_drivebus(index))
axp_drivebus_enable();
#endif
if (sunxi_usbc->gpio_vbus != -1)
gpio_direction_output(sunxi_usbc->gpio_vbus, 1);
}
@ -241,6 +263,10 @@ void sunxi_usbc_vbus_disable(int index)
{
struct sunxi_usbc_hcd *sunxi_usbc = &sunxi_usbc_hcd[index];
#ifdef AXP_DRIVEBUS
if (use_axp_drivebus(index))
axp_drivebus_disable();
#endif
if (sunxi_usbc->gpio_vbus != -1)
gpio_direction_output(sunxi_usbc->gpio_vbus, 0);
}