From: Victor Rodriguez <victor.rodrig...@sasken.com>
This patch adds USB1.1 support for the Hawkboard-L138 system
Signed-off-by: Victor Rodriguez <victor.rodrig...@sasken.com>
Tested-by: Rene Gonzalez <renegs.2...@gmail.com>
---
Notes:
This patch works with da8xx_omapl_defconfig
In order to test it select in menuconfig like insmodule
Device Drivers --->
SCSI device support --->
SCSI device support
legacy /proc/scsi/ support
SCSI disk support
SCSI low-level drivers
USB support --->
Support for Host-side USB
OHCI HCD support (NEW)
USB Mass Storage support (NEW)
USB Gadget Support --->
USB Gadget Drivers (Ethernet Gadget\
(with CDC Ethernet support)) --->
NOP USB Transceiver Driver
And you will be able to mount and USB pen drive
In order to connect a keyboard or a mouse on a USB-hub
select in menuconfig like insmodule
HID Devices --->
Generic HID support
USB Human Interface Device (full HID) support
arch/arm/mach-davinci/board-omapl138-hawk.c | 106 +++++++++++++++++++++++++++
1 files changed, 106 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c
b/arch/arm/mach-davinci/board-omapl138-hawk.c
index 02e54fa..ec3d95e 100644
--- a/arch/arm/mach-davinci/board-omapl138-hawk.c
+++ b/arch/arm/mach-davinci/board-omapl138-hawk.c
@@ -26,6 +26,9 @@
#define DA850_HAWK_MMCSD_CD_PIN GPIO_TO_PIN(3, 12)
#define DA850_HAWK_MMCSD_WP_PIN GPIO_TO_PIN(3, 13)
+#define DA850_USB1_VBUS_PIN GPIO_TO_PIN(2, 4)
+#define DA850_USB1_OC_PIN GPIO_TO_PIN(6, 13)
+
static short omapl138_hawk_mii_pins[] __initdata = {
DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
@@ -204,6 +207,107 @@ static __init void omapl138_hawk_mmc_init(void)
__func__, ret);
}
+static irqreturn_t omapl138_hawk_usb_ocic_irq(int irq, void *dev_id);
+static da8xx_ocic_handler_t hawk_usb_ocic_handler;
+
+static const short da850_hawk_usb11_pins[] = {
+ DA850_GPIO2_4, DA850_GPIO6_13,
+ -1
+};
+
+static int hawk_usb_set_power(unsigned port, int on)
+{
+ gpio_set_value(DA850_USB1_VBUS_PIN, on);
+ return 0;
+}
+
+static int hawk_usb_get_power(unsigned port)
+{
+ return gpio_get_value(DA850_USB1_VBUS_PIN);
+}
+
+static int hawk_usb_get_oci(unsigned port)
+{
+ return !gpio_get_value(DA850_USB1_OC_PIN);
+}
+
+static int hawk_usb_ocic_notify(da8xx_ocic_handler_t handler)
+{
+ int irq = gpio_to_irq(DA850_USB1_OC_PIN);
+ int error = 0;
+
+ if (handler != NULL) {
+ hawk_usb_ocic_handler = handler;
+
+ error = request_irq(irq, omapl138_hawk_usb_ocic_irq,
+ IRQF_DISABLED | IRQF_TRIGGER_RISING |
+ IRQF_TRIGGER_FALLING,
+ "OHCI over-current indicator", NULL);
+ if (error)
+ pr_err(KERN_ERR "%s: could not request IRQ to watch "
+ "over-current indicator changes\n", __func__);
+ } else {
+ free_irq(irq, NULL);
+ }
+ return error;
+}
+
+static struct da8xx_ohci_root_hub omapl138_hawk_usb11_pdata = {
+ .set_power = hawk_usb_set_power,
+ .get_power = hawk_usb_get_power,
+ .get_oci = hawk_usb_get_oci,
+ .ocic_notify = hawk_usb_ocic_notify,
+ /* TPS2087 switch @ 5V */
+ .potpgt = (3 + 1) / 2, /* 3 ms max */
+};
+
+static irqreturn_t omapl138_hawk_usb_ocic_irq(int irq, void *dev_id)
+{
+ hawk_usb_ocic_handler(&omapl138_hawk_usb11_pdata, 1);
+ return IRQ_HANDLED;
+}
+
+static __init void omapl138_hawk_usb_init(void)
+{
+ int ret;
+ u32 cfgchip2;
+
+ ret = davinci_cfg_reg_list(da850_hawk_usb11_pins);
+ if (ret) {
+ pr_warning("%s: USB 1.1 PinMux setup failed: %d\n",
+ __func__, ret);
+ return;
+ }
+
+ /* Setup the Ref. clock frequency for the HAWK at 24 MHz. */
+
+ cfgchip2 = __raw_readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
+ cfgchip2 &= ~CFGCHIP2_REFFREQ;
+ cfgchip2 |= CFGCHIP2_REFFREQ_24MHZ;
+ __raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
+
+ ret = gpio_request_one(DA850_USB1_VBUS_PIN,
+ GPIOF_DIR_OUT, "USB1 VBUS");
+ if (ret < 0) {
+ pr_err(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
+ "power control: %d\n", __func__, ret);
+ return;
+ }
+
+ ret = gpio_request_one(DA850_USB1_OC_PIN,
+ GPIOF_DIR_IN, "USB1 OC");
+ if (ret < 0) {
+ pr_err(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
+ "over-current indicator: %d\n", __func__, ret);
+ return;
+ }
+
+ ret = da8xx_register_usb11(&omapl138_hawk_usb11_pdata);
+ if (ret)
+ pr_warning("%s: USB 1.1 registration failed: %d\n",
+ __func__, ret);
+}
+
static struct davinci_uart_config omapl138_hawk_uart_config __initdata = {
.enabled_uarts = 0x7,
};
@@ -236,6 +340,8 @@ static __init void omapl138_hawk_init(void)
omapl138_hawk_mmc_init();
+ omapl138_hawk_usb_init();
+
ret = da8xx_register_watchdog();
if (ret)
pr_warning("omapl138_hawk_init: "
--
1.7.0.4
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