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[ARM] pxa/em-x270: add support for on-board USB Hub

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Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
This commit is contained in:
Mike Rapoport 2009-05-12 16:31:16 +03:00 committed by Eric Miao
parent 3690a0f426
commit 128d88b82e
1 changed files with 69 additions and 0 deletions
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69
arch/arm/mach-pxa/em-x270.c
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@ -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)