[U-Boot] [PATCH v3] colibri_vf: Add board_usb_phy_mode function

[Sanchayan Maity]

Add board_usb_phy_mode function for detecting whether a port is
being used as host or client using a GPIO. On Colibri Vybrid we
provide the GPIO 102 for this very same purpose.

Signed-off-by: Sanchayan Maity <maitysanchayan at gmail.com>
---
Changes since v1:

Move the GPIO request call to the board_init function as all
further calls to board_usb_phy_mode will actually result in the
gpio_request failing.

Changes since v2:

Instead of returning 0 from board_usb_phy_mode return it as
USB_INIT_HOST.
---
 board/toradex/colibri_vf/colibri_vf.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/board/toradex/colibri_vf/colibri_vf.c b/board/toradex/colibri_vf/colibri_vf.c
index a6d1c5b..9878671 100644
--- a/board/toradex/colibri_vf/colibri_vf.c
+++ b/board/toradex/colibri_vf/colibri_vf.c
@@ -21,6 +21,7 @@
 #include <i2c.h>
 #include <g_dnl.h>
 #include <asm/gpio.h>
+#include <usb.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -34,6 +35,7 @@ DECLARE_GLOBAL_DATA_PTR;
 			PAD_CTL_DSE_50ohm | PAD_CTL_OBE_IBE_ENABLE)
 
 #define USB_PEN_GPIO           83
+#define USB_CDET_GPIO			102
 
 static struct ddrmc_cr_setting colibri_vf_cr_settings[] = {
 	/* levelling */
@@ -92,6 +94,7 @@ static struct ddrmc_cr_setting colibri_vf_cr_settings[] = {
 
 static const iomux_v3_cfg_t usb_pads[] = {
 	VF610_PAD_PTD4__GPIO_83,
+	VF610_PAD_PTC29__GPIO_102,
 };
 
 int dram_init(void)
@@ -280,7 +283,6 @@ static void setup_iomux_gpio(void)
 		VF610_PAD_PTB23__GPIO_93,
 		VF610_PAD_PTB26__GPIO_96,
 		VF610_PAD_PTB28__GPIO_98,
-		VF610_PAD_PTC29__GPIO_102,
 		VF610_PAD_PTC30__GPIO_103,
 		VF610_PAD_PTA7__GPIO_134,
 	};
@@ -509,6 +511,10 @@ int board_init(void)
 
 	setbits_le32(&scsc->sosc_ctr, SCSC_SOSC_CTR_SOSC_EN);
 
+#ifdef CONFIG_USB_EHCI_VF
+	gpio_request(USB_CDET_GPIO, "usb-cdet-gpio");
+#endif
+
 	return 0;
 }
 
@@ -554,4 +560,19 @@ int board_ehci_hcd_init(int port)
 	}
 	return 0;
 }
+
+int board_usb_phy_mode(int port)
+{
+	switch (port) {
+	case 0:
+		return gpio_get_value(USB_CDET_GPIO);
+		break;
+	case 1:
+		return USB_INIT_HOST;
+		break;
+	default:
+		return USB_INIT_HOST;
+		break;
+	}
+}
 #endif
-- 
2.6.2