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path: root/drivers/usb/otg/ulpi.c
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Diffstat (limited to 'drivers/usb/otg/ulpi.c')
-rw-r--r--drivers/usb/otg/ulpi.c270
1 files changed, 0 insertions, 270 deletions
diff --git a/drivers/usb/otg/ulpi.c b/drivers/usb/otg/ulpi.c
deleted file mode 100644
index 059d9ac0ab5..00000000000
--- a/drivers/usb/otg/ulpi.c
+++ /dev/null
@@ -1,270 +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/slab.h>
-#include <linux/usb.h>
-#include <linux/usb/otg.h>
-#include <linux/usb/ulpi.h>
-
-
-struct ulpi_info {
- unsigned int id;
- char *name;
-};
-
-#define ULPI_ID(vendor, product) (((vendor) << 16) | (product))
-#define ULPI_INFO(_id, _name) \
- { \
- .id = (_id), \
- .name = (_name), \
- }
-
-/* ULPI hardcoded IDs, used for probing */
-static struct ulpi_info ulpi_ids[] = {
- ULPI_INFO(ULPI_ID(0x04cc, 0x1504), "NXP ISP1504"),
- ULPI_INFO(ULPI_ID(0x0424, 0x0006), "SMSC USB3319"),
-};
-
-static int ulpi_set_otg_flags(struct otg_transceiver *otg)
-{
- unsigned int flags = ULPI_OTG_CTRL_DP_PULLDOWN |
- ULPI_OTG_CTRL_DM_PULLDOWN;
-
- if (otg->flags & ULPI_OTG_ID_PULLUP)
- flags |= ULPI_OTG_CTRL_ID_PULLUP;
-
- /*
- * ULPI Specification rev.1.1 default
- * for Dp/DmPulldown is enabled.
- */
- if (otg->flags & ULPI_OTG_DP_PULLDOWN_DIS)
- flags &= ~ULPI_OTG_CTRL_DP_PULLDOWN;
-
- if (otg->flags & ULPI_OTG_DM_PULLDOWN_DIS)
- flags &= ~ULPI_OTG_CTRL_DM_PULLDOWN;
-
- if (otg->flags & ULPI_OTG_EXTVBUSIND)
- flags |= ULPI_OTG_CTRL_EXTVBUSIND;
-
- return otg_io_write(otg, flags, ULPI_OTG_CTRL);
-}
-
-static int ulpi_set_fc_flags(struct otg_transceiver *otg)
-{
- unsigned int flags = 0;
-
- /*
- * ULPI Specification rev.1.1 default
- * for XcvrSelect is Full Speed.
- */
- if (otg->flags & ULPI_FC_HS)
- flags |= ULPI_FUNC_CTRL_HIGH_SPEED;
- else if (otg->flags & ULPI_FC_LS)
- flags |= ULPI_FUNC_CTRL_LOW_SPEED;
- else if (otg->flags & ULPI_FC_FS4LS)
- flags |= ULPI_FUNC_CTRL_FS4LS;
- else
- flags |= ULPI_FUNC_CTRL_FULL_SPEED;
-
- if (otg->flags & ULPI_FC_TERMSEL)
- flags |= ULPI_FUNC_CTRL_TERMSELECT;
-
- /*
- * ULPI Specification rev.1.1 default
- * for OpMode is Normal Operation.
- */
- if (otg->flags & ULPI_FC_OP_NODRV)
- flags |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
- else if (otg->flags & ULPI_FC_OP_DIS_NRZI)
- flags |= ULPI_FUNC_CTRL_OPMODE_DISABLE_NRZI;
- else if (otg->flags & ULPI_FC_OP_NSYNC_NEOP)
- flags |= ULPI_FUNC_CTRL_OPMODE_NOSYNC_NOEOP;
- else
- flags |= ULPI_FUNC_CTRL_OPMODE_NORMAL;
-
- /*
- * ULPI Specification rev.1.1 default
- * for SuspendM is Powered.
- */
- flags |= ULPI_FUNC_CTRL_SUSPENDM;
-
- return otg_io_write(otg, flags, ULPI_FUNC_CTRL);
-}
-
-static int ulpi_set_ic_flags(struct otg_transceiver *otg)
-{
- unsigned int flags = 0;
-
- if (otg->flags & ULPI_IC_AUTORESUME)
- flags |= ULPI_IFC_CTRL_AUTORESUME;
-
- if (otg->flags & ULPI_IC_EXTVBUS_INDINV)
- flags |= ULPI_IFC_CTRL_EXTERNAL_VBUS;
-
- if (otg->flags & ULPI_IC_IND_PASSTHRU)
- flags |= ULPI_IFC_CTRL_PASSTHRU;
-
- if (otg->flags & ULPI_IC_PROTECT_DIS)
- flags |= ULPI_IFC_CTRL_PROTECT_IFC_DISABLE;
-
- return otg_io_write(otg, flags, ULPI_IFC_CTRL);
-}
-
-static int ulpi_set_flags(struct otg_transceiver *otg)
-{
- int ret;
-
- ret = ulpi_set_otg_flags(otg);
- if (ret)
- return ret;
-
- ret = ulpi_set_ic_flags(otg);
- if (ret)
- return ret;
-
- return ulpi_set_fc_flags(otg);
-}
-
-static int ulpi_check_integrity(struct otg_transceiver *otg)
-{
- int ret, i;
- unsigned int val = 0x55;
-
- for (i = 0; i < 2; i++) {
- ret = otg_io_write(otg, val, ULPI_SCRATCH);
- if (ret < 0)
- return ret;
-
- ret = otg_io_read(otg, ULPI_SCRATCH);
- if (ret < 0)
- return ret;
-
- if (ret != val) {
- pr_err("ULPI integrity check: failed!");
- return -ENODEV;
- }
- val = val << 1;
- }
-
- pr_info("ULPI integrity check: passed.\n");
-
- return 0;
-}
-
-static int ulpi_init(struct otg_transceiver *otg)
-{
- int i, vid, pid, ret;
- u32 ulpi_id = 0;
-
- for (i = 0; i < 4; i++) {
- ret = otg_io_read(otg, ULPI_PRODUCT_ID_HIGH - i);
- if (ret < 0)
- return ret;
- ulpi_id = (ulpi_id << 8) | ret;
- }
- vid = ulpi_id & 0xffff;
- pid = ulpi_id >> 16;
-
- 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].id == ULPI_ID(vid, pid)) {
- pr_info("Found %s ULPI transceiver.\n",
- ulpi_ids[i].name);
- break;
- }
- }
-
- ret = ulpi_check_integrity(otg);
- if (ret)
- return ret;
-
- return ulpi_set_flags(otg);
-}
-
-static int ulpi_set_host(struct otg_transceiver *otg, struct usb_bus *host)
-{
- unsigned int flags = otg_io_read(otg, ULPI_IFC_CTRL);
-
- if (!host) {
- otg->host = NULL;
- return 0;
- }
-
- otg->host = host;
-
- flags &= ~(ULPI_IFC_CTRL_6_PIN_SERIAL_MODE |
- ULPI_IFC_CTRL_3_PIN_SERIAL_MODE |
- ULPI_IFC_CTRL_CARKITMODE);
-
- if (otg->flags & ULPI_IC_6PIN_SERIAL)
- flags |= ULPI_IFC_CTRL_6_PIN_SERIAL_MODE;
- else if (otg->flags & ULPI_IC_3PIN_SERIAL)
- flags |= ULPI_IFC_CTRL_3_PIN_SERIAL_MODE;
- else if (otg->flags & ULPI_IC_CARKIT)
- flags |= ULPI_IFC_CTRL_CARKITMODE;
-
- return otg_io_write(otg, flags, ULPI_IFC_CTRL);
-}
-
-static int ulpi_set_vbus(struct otg_transceiver *otg, bool on)
-{
- unsigned int flags = otg_io_read(otg, ULPI_OTG_CTRL);
-
- flags &= ~(ULPI_OTG_CTRL_DRVVBUS | ULPI_OTG_CTRL_DRVVBUS_EXT);
-
- if (on) {
- if (otg->flags & ULPI_OTG_DRVVBUS)
- flags |= ULPI_OTG_CTRL_DRVVBUS;
-
- if (otg->flags & ULPI_OTG_DRVVBUS_EXT)
- flags |= ULPI_OTG_CTRL_DRVVBUS_EXT;
- }
-
- return otg_io_write(otg, flags, ULPI_OTG_CTRL);
-}
-
-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_host = ulpi_set_host;
- otg->set_vbus = ulpi_set_vbus;
-
- return otg;
-}
-EXPORT_SYMBOL_GPL(otg_ulpi_create);
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 08:10:54 +0000