From: Victor Rodriguez victor.rodriguez@sasken.com
This patch adds USB-OHCI support for the Hawkboard-L138 system
Signed-off-by: Victor Rodriguez victor.rodriguez@sasken.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 US 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 | 101 +++++++++++++++++++++++++++ 1 files changed, 101 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/board-omapl138-hawk.c b/arch/arm/mach-davinci/board-omapl138-hawk.c index 723ac03..bac29fc 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, @@ -177,6 +180,94 @@ static struct davinci_mmc_config da850_mmc_config = { .version = MMC_CTLR_VERSION_2, };
+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) + printk(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; + /* + * 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(DA850_USB1_VBUS_PIN, "USB1 VBUS\n"); + if (ret) { + printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port " + "power control: %d\n", __func__, ret); + return; + } + gpio_direction_output(DA850_USB1_VBUS_PIN, 0); + + ret = gpio_request(DA850_USB1_OC_PIN, "USB1 OC"); + if (ret) { + printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port " + "over-current indicator: %d\n", __func__, ret); + return; + } + gpio_direction_input(DA850_USB1_OC_PIN); +} + static struct davinci_uart_config omapl138_hawk_uart_config __initdata = { .enabled_uarts = 0x7, }; @@ -229,6 +320,16 @@ static __init void omapl138_hawk_init(void) pr_warning("%s: MMC/SD0 registration failed: %d\n", __func__, ret);
+ ret = davinci_cfg_reg_list(da850_hawk_usb11_pins); + if (ret) + pr_warning("%s: USB 1.1 PinMux setup failed: %d\n", + __func__, ret); + omapl138_hawk_usb_init(); + ret = da8xx_register_usb11(&omapl138_hawk_usb11_pdata); + if (ret) + pr_warning("%s: USB 1.1 registration failed: %d\n", + __func__, ret); + ret = da8xx_register_watchdog(); if (ret) pr_warning("omapl138_hawk_init: "