[ARM] pxa/em-x270: add support for on-board USB Hub (128d88b8) · Commits · e / devices / android_kernel_teracube_emerald

arch/arm/mach-pxa/em-x270.c

+69 −0

Original line number	Original line	Diff line number	Diff line
	@@ -55,6 +55,7 @@
	#define GPIO95_MMC_WP (95)		#define GPIO95_MMC_WP (95)
	#define GPIO56_NAND_RB (56)		#define GPIO56_NAND_RB (56)
	#define GPIO93_CAM_RESET (93)		#define GPIO93_CAM_RESET (93)
			#define GPIO16_USB_HUB_RESET (16)

	/* eXeda specific GPIOs */		/* eXeda specific GPIOs */
	#define GPIO114_MMC_CD (114)		#define GPIO114_MMC_CD (114)
	@@ -63,6 +64,7 @@
	#define GPIO37_WLAN_RST (37)		#define GPIO37_WLAN_RST (37)
	#define GPIO95_TOUCHPAD_INT (95)		#define GPIO95_TOUCHPAD_INT (95)
	#define GPIO130_CAM_RESET (130)		#define GPIO130_CAM_RESET (130)
			#define GPIO10_USB_HUB_RESET (10)

	/* common GPIOs */		/* common GPIOs */
	#define GPIO11_NAND_CS (11)		#define GPIO11_NAND_CS (11)
	@@ -70,11 +72,13 @@
	#define EM_X270_ETHIRQ IRQ_GPIO(GPIO41_ETHIRQ)		#define EM_X270_ETHIRQ IRQ_GPIO(GPIO41_ETHIRQ)
	#define GPIO115_WLAN_PWEN (115)		#define GPIO115_WLAN_PWEN (115)
	#define GPIO19_WLAN_STRAP (19)		#define GPIO19_WLAN_STRAP (19)
			#define GPIO9_USB_VBUS_EN (9)

	static int mmc_cd;		static int mmc_cd;
	static int nand_rb;		static int nand_rb;
	static int dm9000_flags;		static int dm9000_flags;
	static int cam_reset;		static int cam_reset;
			static int usb_hub_reset;

	static unsigned long common_pin_config[] = {		static unsigned long common_pin_config[] = {
	/* AC'97 */		/* AC'97 */
	@@ -197,12 +201,14 @@ static unsigned long common_pin_config[] = {

	static unsigned long em_x270_pin_config[] = {		static unsigned long em_x270_pin_config[] = {
	GPIO13_GPIO, /* MMC card detect */		GPIO13_GPIO, /* MMC card detect */
			GPIO16_GPIO, /* USB hub reset */
	GPIO56_GPIO, /* NAND Ready/Busy */		GPIO56_GPIO, /* NAND Ready/Busy */
	GPIO93_GPIO \| MFP_LPM_DRIVE_LOW, /* Camera reset */		GPIO93_GPIO \| MFP_LPM_DRIVE_LOW, /* Camera reset */
	GPIO95_GPIO, /* MMC Write protect */		GPIO95_GPIO, /* MMC Write protect */
	};		};

	static unsigned long exeda_pin_config[] = {		static unsigned long exeda_pin_config[] = {
			GPIO10_GPIO, /* USB hub reset */
	GPIO20_GPIO, /* NAND Ready/Busy */		GPIO20_GPIO, /* NAND Ready/Busy */
	GPIO38_GPIO \| MFP_LPM_DRIVE_LOW, /* SD slot power */		GPIO38_GPIO \| MFP_LPM_DRIVE_LOW, /* SD slot power */
	GPIO95_GPIO, /* touchpad IRQ */		GPIO95_GPIO, /* touchpad IRQ */
	@@ -471,18 +477,79 @@ static inline void em_x270_init_nor(void) {}

	/* PXA27x OHCI controller setup */		/* PXA27x OHCI controller setup */
	#if defined(CONFIG_USB_OHCI_HCD) \|\| defined(CONFIG_USB_OHCI_HCD_MODULE)		#if defined(CONFIG_USB_OHCI_HCD) \|\| defined(CONFIG_USB_OHCI_HCD_MODULE)
			static struct regulator *em_x270_usb_ldo;

			static int em_x270_usb_hub_init(void)
			{
			int err;

			em_x270_usb_ldo = regulator_get(NULL, "vcc usb");
			if (IS_ERR(em_x270_usb_ldo))
			return PTR_ERR(em_x270_usb_ldo);

			err = gpio_request(GPIO9_USB_VBUS_EN, "vbus en");
			if (err)
			goto err_free_usb_ldo;

			err = gpio_request(usb_hub_reset, "hub rst");
			if (err)
			goto err_free_vbus_gpio;

			/* USB Hub power-on and reset */
			gpio_direction_output(usb_hub_reset, 0);
			regulator_enable(em_x270_usb_ldo);
			gpio_set_value(usb_hub_reset, 1);
			gpio_set_value(usb_hub_reset, 0);
			regulator_disable(em_x270_usb_ldo);
			regulator_enable(em_x270_usb_ldo);
			gpio_set_value(usb_hub_reset, 1);

			/* enable VBUS */
			gpio_direction_output(GPIO9_USB_VBUS_EN, 1);

			return 0;

			err_free_vbus_gpio:
			gpio_free(GPIO9_USB_VBUS_EN);
			err_free_usb_ldo:
			regulator_put(em_x270_usb_ldo);

			return err;
			}

	static int em_x270_ohci_init(struct device *dev)		static int em_x270_ohci_init(struct device *dev)
	{		{
			int err;

			/* we don't want to entirely disable USB if the HUB init failed */
			err = em_x270_usb_hub_init();
			if (err)
			pr_err("USB Hub initialization failed: %d\n", err);

	/* enable port 2 transiever */		/* enable port 2 transiever */
	UP2OCR = UP2OCR_HXS \| UP2OCR_HXOE;		UP2OCR = UP2OCR_HXS \| UP2OCR_HXOE;

	return 0;		return 0;
	}		}

			static void em_x270_ohci_exit(struct device *dev)
			{
			gpio_free(usb_hub_reset);
			gpio_free(GPIO9_USB_VBUS_EN);

			if (!IS_ERR(em_x270_usb_ldo)) {
			if (regulator_is_enabled(em_x270_usb_ldo))
			regulator_disable(em_x270_usb_ldo);

			regulator_put(em_x270_usb_ldo);
			}
			}

	static struct pxaohci_platform_data em_x270_ohci_platform_data = {		static struct pxaohci_platform_data em_x270_ohci_platform_data = {
	.port_mode = PMM_PERPORT_MODE,		.port_mode = PMM_PERPORT_MODE,
	.flags = ENABLE_PORT1 \| ENABLE_PORT2 \| POWER_CONTROL_LOW,		.flags = ENABLE_PORT1 \| ENABLE_PORT2 \| POWER_CONTROL_LOW,
	.init = em_x270_ohci_init,		.init = em_x270_ohci_init,
			.exit = em_x270_ohci_exit,
	};		};

	static void __init em_x270_init_ohci(void)		static void __init em_x270_init_ohci(void)
	@@ -1129,6 +1196,7 @@ static void __init em_x270_module_init(void)
	nand_rb = GPIO56_NAND_RB;		nand_rb = GPIO56_NAND_RB;
	dm9000_flags = DM9000_PLATF_32BITONLY;		dm9000_flags = DM9000_PLATF_32BITONLY;
	cam_reset = GPIO93_CAM_RESET;		cam_reset = GPIO93_CAM_RESET;
			usb_hub_reset = GPIO16_USB_HUB_RESET;
	}		}

	static void __init em_x270_exeda_init(void)		static void __init em_x270_exeda_init(void)
	@@ -1140,6 +1208,7 @@ static void __init em_x270_exeda_init(void)
	nand_rb = GPIO20_NAND_RB;		nand_rb = GPIO20_NAND_RB;
	dm9000_flags = DM9000_PLATF_16BITONLY;		dm9000_flags = DM9000_PLATF_16BITONLY;
	cam_reset = GPIO130_CAM_RESET;		cam_reset = GPIO130_CAM_RESET;
			usb_hub_reset = GPIO10_USB_HUB_RESET;
	}		}

	static void __init em_x270_init(void)		static void __init em_x270_init(void)