usb: phy: move all PHY drivers to drivers/usb/phy/
that's a much more reasonable location for those drivers. It helps us saving drivers/usb/otg/ for when we actually start adding generic OTG code. Also completely delete drivers/usb/otg/ as there's nothing left there. Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi
parent
110ff6d041
commit
a0e631235a
22 changed files with 172 additions and 188 deletions
283
drivers/usb/phy/ulpi.c
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283
drivers/usb/phy/ulpi.c
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/*
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* Generic ULPI USB transceiver support
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*
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* Copyright (C) 2009 Daniel Mack <daniel@caiaq.de>
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*
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* Based on sources from
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*
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* Sascha Hauer <s.hauer@pengutronix.de>
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* Freescale Semiconductors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/export.h>
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#include <linux/usb.h>
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#include <linux/usb/otg.h>
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#include <linux/usb/ulpi.h>
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struct ulpi_info {
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unsigned int id;
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char *name;
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};
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#define ULPI_ID(vendor, product) (((vendor) << 16) | (product))
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#define ULPI_INFO(_id, _name) \
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{ \
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.id = (_id), \
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.name = (_name), \
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}
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/* ULPI hardcoded IDs, used for probing */
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static struct ulpi_info ulpi_ids[] = {
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ULPI_INFO(ULPI_ID(0x04cc, 0x1504), "NXP ISP1504"),
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ULPI_INFO(ULPI_ID(0x0424, 0x0006), "SMSC USB331x"),
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};
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static int ulpi_set_otg_flags(struct usb_phy *phy)
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{
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unsigned int flags = ULPI_OTG_CTRL_DP_PULLDOWN |
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ULPI_OTG_CTRL_DM_PULLDOWN;
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if (phy->flags & ULPI_OTG_ID_PULLUP)
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flags |= ULPI_OTG_CTRL_ID_PULLUP;
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/*
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* ULPI Specification rev.1.1 default
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* for Dp/DmPulldown is enabled.
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*/
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if (phy->flags & ULPI_OTG_DP_PULLDOWN_DIS)
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flags &= ~ULPI_OTG_CTRL_DP_PULLDOWN;
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if (phy->flags & ULPI_OTG_DM_PULLDOWN_DIS)
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flags &= ~ULPI_OTG_CTRL_DM_PULLDOWN;
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if (phy->flags & ULPI_OTG_EXTVBUSIND)
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flags |= ULPI_OTG_CTRL_EXTVBUSIND;
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return usb_phy_io_write(phy, flags, ULPI_OTG_CTRL);
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}
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static int ulpi_set_fc_flags(struct usb_phy *phy)
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{
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unsigned int flags = 0;
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/*
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* ULPI Specification rev.1.1 default
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* for XcvrSelect is Full Speed.
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*/
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if (phy->flags & ULPI_FC_HS)
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flags |= ULPI_FUNC_CTRL_HIGH_SPEED;
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else if (phy->flags & ULPI_FC_LS)
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flags |= ULPI_FUNC_CTRL_LOW_SPEED;
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else if (phy->flags & ULPI_FC_FS4LS)
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flags |= ULPI_FUNC_CTRL_FS4LS;
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else
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flags |= ULPI_FUNC_CTRL_FULL_SPEED;
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if (phy->flags & ULPI_FC_TERMSEL)
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flags |= ULPI_FUNC_CTRL_TERMSELECT;
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/*
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* ULPI Specification rev.1.1 default
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* for OpMode is Normal Operation.
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*/
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if (phy->flags & ULPI_FC_OP_NODRV)
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flags |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
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else if (phy->flags & ULPI_FC_OP_DIS_NRZI)
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flags |= ULPI_FUNC_CTRL_OPMODE_DISABLE_NRZI;
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else if (phy->flags & ULPI_FC_OP_NSYNC_NEOP)
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flags |= ULPI_FUNC_CTRL_OPMODE_NOSYNC_NOEOP;
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else
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flags |= ULPI_FUNC_CTRL_OPMODE_NORMAL;
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/*
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* ULPI Specification rev.1.1 default
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* for SuspendM is Powered.
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*/
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flags |= ULPI_FUNC_CTRL_SUSPENDM;
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return usb_phy_io_write(phy, flags, ULPI_FUNC_CTRL);
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}
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static int ulpi_set_ic_flags(struct usb_phy *phy)
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{
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unsigned int flags = 0;
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if (phy->flags & ULPI_IC_AUTORESUME)
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flags |= ULPI_IFC_CTRL_AUTORESUME;
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if (phy->flags & ULPI_IC_EXTVBUS_INDINV)
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flags |= ULPI_IFC_CTRL_EXTERNAL_VBUS;
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if (phy->flags & ULPI_IC_IND_PASSTHRU)
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flags |= ULPI_IFC_CTRL_PASSTHRU;
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if (phy->flags & ULPI_IC_PROTECT_DIS)
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flags |= ULPI_IFC_CTRL_PROTECT_IFC_DISABLE;
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return usb_phy_io_write(phy, flags, ULPI_IFC_CTRL);
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}
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static int ulpi_set_flags(struct usb_phy *phy)
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{
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int ret;
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ret = ulpi_set_otg_flags(phy);
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if (ret)
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return ret;
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ret = ulpi_set_ic_flags(phy);
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if (ret)
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return ret;
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return ulpi_set_fc_flags(phy);
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}
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static int ulpi_check_integrity(struct usb_phy *phy)
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{
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int ret, i;
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unsigned int val = 0x55;
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for (i = 0; i < 2; i++) {
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ret = usb_phy_io_write(phy, val, ULPI_SCRATCH);
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if (ret < 0)
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return ret;
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ret = usb_phy_io_read(phy, ULPI_SCRATCH);
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if (ret < 0)
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return ret;
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if (ret != val) {
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pr_err("ULPI integrity check: failed!");
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return -ENODEV;
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}
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val = val << 1;
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}
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pr_info("ULPI integrity check: passed.\n");
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return 0;
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}
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static int ulpi_init(struct usb_phy *phy)
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{
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int i, vid, pid, ret;
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u32 ulpi_id = 0;
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for (i = 0; i < 4; i++) {
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ret = usb_phy_io_read(phy, ULPI_PRODUCT_ID_HIGH - i);
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if (ret < 0)
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return ret;
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ulpi_id = (ulpi_id << 8) | ret;
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}
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vid = ulpi_id & 0xffff;
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pid = ulpi_id >> 16;
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pr_info("ULPI transceiver vendor/product ID 0x%04x/0x%04x\n", vid, pid);
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for (i = 0; i < ARRAY_SIZE(ulpi_ids); i++) {
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if (ulpi_ids[i].id == ULPI_ID(vid, pid)) {
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pr_info("Found %s ULPI transceiver.\n",
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ulpi_ids[i].name);
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break;
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}
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}
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ret = ulpi_check_integrity(phy);
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if (ret)
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return ret;
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return ulpi_set_flags(phy);
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}
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static int ulpi_set_host(struct usb_otg *otg, struct usb_bus *host)
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{
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struct usb_phy *phy = otg->phy;
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unsigned int flags = usb_phy_io_read(phy, ULPI_IFC_CTRL);
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if (!host) {
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otg->host = NULL;
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return 0;
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}
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otg->host = host;
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flags &= ~(ULPI_IFC_CTRL_6_PIN_SERIAL_MODE |
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ULPI_IFC_CTRL_3_PIN_SERIAL_MODE |
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ULPI_IFC_CTRL_CARKITMODE);
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if (phy->flags & ULPI_IC_6PIN_SERIAL)
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flags |= ULPI_IFC_CTRL_6_PIN_SERIAL_MODE;
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else if (phy->flags & ULPI_IC_3PIN_SERIAL)
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flags |= ULPI_IFC_CTRL_3_PIN_SERIAL_MODE;
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else if (phy->flags & ULPI_IC_CARKIT)
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flags |= ULPI_IFC_CTRL_CARKITMODE;
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return usb_phy_io_write(phy, flags, ULPI_IFC_CTRL);
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}
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static int ulpi_set_vbus(struct usb_otg *otg, bool on)
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{
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struct usb_phy *phy = otg->phy;
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unsigned int flags = usb_phy_io_read(phy, ULPI_OTG_CTRL);
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flags &= ~(ULPI_OTG_CTRL_DRVVBUS | ULPI_OTG_CTRL_DRVVBUS_EXT);
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if (on) {
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if (phy->flags & ULPI_OTG_DRVVBUS)
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flags |= ULPI_OTG_CTRL_DRVVBUS;
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if (phy->flags & ULPI_OTG_DRVVBUS_EXT)
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flags |= ULPI_OTG_CTRL_DRVVBUS_EXT;
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}
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return usb_phy_io_write(phy, flags, ULPI_OTG_CTRL);
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}
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struct usb_phy *
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otg_ulpi_create(struct usb_phy_io_ops *ops,
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unsigned int flags)
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{
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struct usb_phy *phy;
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struct usb_otg *otg;
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phy = kzalloc(sizeof(*phy), GFP_KERNEL);
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if (!phy)
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return NULL;
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otg = kzalloc(sizeof(*otg), GFP_KERNEL);
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if (!otg) {
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kfree(phy);
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return NULL;
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}
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phy->label = "ULPI";
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phy->flags = flags;
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phy->io_ops = ops;
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phy->otg = otg;
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phy->init = ulpi_init;
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otg->phy = phy;
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otg->set_host = ulpi_set_host;
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otg->set_vbus = ulpi_set_vbus;
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return phy;
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}
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EXPORT_SYMBOL_GPL(otg_ulpi_create);
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