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sunxi: usb-phy: Add support for reading otg id pin value

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Add support for reading the id pin value of the otg connector to the usb
phy code.

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 2015-06-14 17:29:53 +02:00
parent de1502c937
commit 48c06c98ec
3 changed files with 42 additions and 0 deletions
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34
arch/arm/cpu/armv7/sunxi/usb_phy.c
View file

@ -44,6 +44,7 @@ static struct sunxi_usb_phy {
int usb_rst_mask;
int gpio_vbus;
int gpio_vbus_det;
int gpio_id_det;
int id;
int init_count;
int power_on_count;
@ -82,6 +83,14 @@ static int get_vbus_detect_gpio(int index)
return -EINVAL;
}
static int get_id_detect_gpio(int index)
{
switch (index) {
case 0: return sunxi_name_to_gpio(CONFIG_USB0_ID_DET);
}
return -EINVAL;
}
static void usb_phy_write(struct sunxi_usb_phy *phy, int addr,
int data, int len)
{
@ -247,6 +256,16 @@ int sunxi_usb_phy_vbus_detect(int index)
return err;
}
int sunxi_usb_phy_id_detect(int index)
{
struct sunxi_usb_phy *phy = &sunxi_usb_phy[index];
if (phy->gpio_id_det < 0)
return phy->gpio_id_det;
return gpio_get_value(phy->gpio_id_det);
}
int sunxi_usb_phy_probe(void)
{
struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
@ -275,6 +294,18 @@ int sunxi_usb_phy_probe(void)
if (ret)
return ret;
}
phy->gpio_id_det = get_id_detect_gpio(i);
if (phy->gpio_id_det >= 0) {
ret = gpio_request(phy->gpio_id_det, "usb_id_det");
if (ret)
return ret;
ret = gpio_direction_input(phy->gpio_id_det);
if (ret)
return ret;
sunxi_gpio_set_pull(phy->gpio_id_det,
SUNXI_GPIO_PULL_UP);
}
}
setbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE);
@ -298,6 +329,9 @@ int sunxi_usb_phy_remove(void)
if (phy->gpio_vbus_det >= 0)
gpio_free(phy->gpio_vbus_det);
if (phy->gpio_id_det >= 0)
gpio_free(phy->gpio_id_det);
}
return 0;

1
arch/arm/include/asm/arch-sunxi/usb_phy.h
View file

@ -17,4 +17,5 @@ void sunxi_usb_phy_exit(int index);
void sunxi_usb_phy_power_on(int index);
void sunxi_usb_phy_power_off(int index);
int sunxi_usb_phy_vbus_detect(int index);
int sunxi_usb_phy_id_detect(int index);
void sunxi_usb_phy_enable_squelch_detect(int index, int enable);

7
board/sunxi/Kconfig
View file

@ -294,6 +294,13 @@ config USB0_VBUS_DET
Set the Vbus detect pin for usb0 (otg). This takes a string in the
format understood by sunxi_name_to_gpio, e.g. PH1 for pin 1 of port H.
config USB0_ID_DET
string "ID detect pin for usb0 (otg)"
default ""
---help---
Set the ID detect pin for usb0 (otg). This takes a string in the
format understood by sunxi_name_to_gpio, e.g. PH1 for pin 1 of port H.
config USB1_VBUS_PIN
string "Vbus enable pin for usb1 (ehci0)"
default "PH6" if MACH_SUN4I || MACH_SUN7I