diff options
Diffstat (limited to 'drivers/usb/otg/ulpi.c')
| -rw-r--r-- | drivers/usb/otg/ulpi.c | 136 |
1 files changed, 0 insertions, 136 deletions
diff --git a/drivers/usb/otg/ulpi.c b/drivers/usb/otg/ulpi.c deleted file mode 100644 index 896527456b7..00000000000 --- a/drivers/usb/otg/ulpi.c +++ /dev/null @@ -1,136 +0,0 @@ -/* - * Generic ULPI USB transceiver support - * - * Copyright (C) 2009 Daniel Mack <daniel@caiaq.de> - * - * Based on sources from - * - * Sascha Hauer <s.hauer@pengutronix.de> - * Freescale Semiconductors - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -#include <linux/kernel.h> -#include <linux/usb.h> -#include <linux/usb/otg.h> -#include <linux/usb/ulpi.h> - -/* ULPI register addresses */ -#define ULPI_VID_LOW 0x00 /* Vendor ID low */ -#define ULPI_VID_HIGH 0x01 /* Vendor ID high */ -#define ULPI_PID_LOW 0x02 /* Product ID low */ -#define ULPI_PID_HIGH 0x03 /* Product ID high */ -#define ULPI_ITFCTL 0x07 /* Interface Control */ -#define ULPI_OTGCTL 0x0A /* OTG Control */ - -/* add to above register address to access Set/Clear functions */ -#define ULPI_REG_SET 0x01 -#define ULPI_REG_CLEAR 0x02 - -/* ULPI OTG Control Register bits */ -#define ID_PULL_UP (1 << 0) /* enable ID Pull Up */ -#define DP_PULL_DOWN (1 << 1) /* enable DP Pull Down */ -#define DM_PULL_DOWN (1 << 2) /* enable DM Pull Down */ -#define DISCHRG_VBUS (1 << 3) /* Discharge Vbus */ -#define CHRG_VBUS (1 << 4) /* Charge Vbus */ -#define DRV_VBUS (1 << 5) /* Drive Vbus */ -#define DRV_VBUS_EXT (1 << 6) /* Drive Vbus external */ -#define USE_EXT_VBUS_IND (1 << 7) /* Use ext. Vbus indicator */ - -#define ULPI_ID(vendor, product) (((vendor) << 16) | (product)) - -#define TR_FLAG(flags, a, b) (((flags) & a) ? b : 0) - -/* ULPI hardcoded IDs, used for probing */ -static unsigned int ulpi_ids[] = { - ULPI_ID(0x04cc, 0x1504), /* NXP ISP1504 */ -}; - -static int ulpi_set_flags(struct otg_transceiver *otg) -{ - unsigned int flags = 0; - - if (otg->flags & USB_OTG_PULLUP_ID) - flags |= ID_PULL_UP; - - if (otg->flags & USB_OTG_PULLDOWN_DM) - flags |= DM_PULL_DOWN; - - if (otg->flags & USB_OTG_PULLDOWN_DP) - flags |= DP_PULL_DOWN; - - if (otg->flags & USB_OTG_EXT_VBUS_INDICATOR) - flags |= USE_EXT_VBUS_IND; - - return otg_io_write(otg, flags, ULPI_OTGCTL + ULPI_REG_SET); -} - -static int ulpi_init(struct otg_transceiver *otg) -{ - int i, vid, pid; - - vid = (otg_io_read(otg, ULPI_VID_HIGH) << 8) | - otg_io_read(otg, ULPI_VID_LOW); - pid = (otg_io_read(otg, ULPI_PID_HIGH) << 8) | - otg_io_read(otg, ULPI_PID_LOW); - - pr_info("ULPI transceiver vendor/product ID 0x%04x/0x%04x\n", vid, pid); - - for (i = 0; i < ARRAY_SIZE(ulpi_ids); i++) - if (ulpi_ids[i] == ULPI_ID(vid, pid)) - return ulpi_set_flags(otg); - - pr_err("ULPI ID does not match any known transceiver.\n"); - return -ENODEV; -} - -static int ulpi_set_vbus(struct otg_transceiver *otg, bool on) -{ - unsigned int flags = otg_io_read(otg, ULPI_OTGCTL); - - flags &= ~(DRV_VBUS | DRV_VBUS_EXT); - - if (on) { - if (otg->flags & USB_OTG_DRV_VBUS) - flags |= DRV_VBUS; - - if (otg->flags & USB_OTG_DRV_VBUS_EXT) - flags |= DRV_VBUS_EXT; - } - - return otg_io_write(otg, flags, ULPI_OTGCTL + ULPI_REG_SET); -} - -struct otg_transceiver * -otg_ulpi_create(struct otg_io_access_ops *ops, - unsigned int flags) -{ - struct otg_transceiver *otg; - - otg = kzalloc(sizeof(*otg), GFP_KERNEL); - if (!otg) - return NULL; - - otg->label = "ULPI"; - otg->flags = flags; - otg->io_ops = ops; - otg->init = ulpi_init; - otg->set_vbus = ulpi_set_vbus; - - return otg; -} -EXPORT_SYMBOL_GPL(otg_ulpi_create); - |