summaryrefslogtreecommitdiffstats
path: root/drivers/usb/otg/twl4030-usb.c
diff options
context:
space:
mode:
authorFelipe Balbi <balbi@ti.com>2013-03-07 10:01:15 +0100
committerFelipe Balbi <balbi@ti.com>2013-03-18 10:18:04 +0100
commita0e631235a04f8a815a1ecec93ef418f7d1e6086 (patch)
tree448db1daeeab6801efdedf77e25823ee27a403c8 /drivers/usb/otg/twl4030-usb.c
parentusb: phy: convert EXPORT_SYMBOL to EXPORT_SYMBOL_GPL (diff)
downloadlinux-a0e631235a04f8a815a1ecec93ef418f7d1e6086.tar.xz
linux-a0e631235a04f8a815a1ecec93ef418f7d1e6086.zip
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>
Diffstat (limited to 'drivers/usb/otg/twl4030-usb.c')
-rw-r--r--drivers/usb/otg/twl4030-usb.c728
1 files changed, 0 insertions, 728 deletions
diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c
deleted file mode 100644
index a994715a3101..000000000000
--- a/drivers/usb/otg/twl4030-usb.c
+++ /dev/null
@@ -1,728 +0,0 @@
-/*
- * twl4030_usb - TWL4030 USB transceiver, talking to OMAP OTG controller
- *
- * Copyright (C) 2004-2007 Texas Instruments
- * Copyright (C) 2008 Nokia Corporation
- * Contact: Felipe Balbi <felipe.balbi@nokia.com>
- *
- * 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.
- *
- * Current status:
- * - HS USB ULPI mode works.
- * - 3-pin mode support may be added in future.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/spinlock.h>
-#include <linux/workqueue.h>
-#include <linux/io.h>
-#include <linux/delay.h>
-#include <linux/usb/otg.h>
-#include <linux/usb/musb-omap.h>
-#include <linux/usb/ulpi.h>
-#include <linux/i2c/twl.h>
-#include <linux/regulator/consumer.h>
-#include <linux/err.h>
-#include <linux/slab.h>
-
-/* Register defines */
-
-#define MCPC_CTRL 0x30
-#define MCPC_CTRL_RTSOL (1 << 7)
-#define MCPC_CTRL_EXTSWR (1 << 6)
-#define MCPC_CTRL_EXTSWC (1 << 5)
-#define MCPC_CTRL_VOICESW (1 << 4)
-#define MCPC_CTRL_OUT64K (1 << 3)
-#define MCPC_CTRL_RTSCTSSW (1 << 2)
-#define MCPC_CTRL_HS_UART (1 << 0)
-
-#define MCPC_IO_CTRL 0x33
-#define MCPC_IO_CTRL_MICBIASEN (1 << 5)
-#define MCPC_IO_CTRL_CTS_NPU (1 << 4)
-#define MCPC_IO_CTRL_RXD_PU (1 << 3)
-#define MCPC_IO_CTRL_TXDTYP (1 << 2)
-#define MCPC_IO_CTRL_CTSTYP (1 << 1)
-#define MCPC_IO_CTRL_RTSTYP (1 << 0)
-
-#define MCPC_CTRL2 0x36
-#define MCPC_CTRL2_MCPC_CK_EN (1 << 0)
-
-#define OTHER_FUNC_CTRL 0x80
-#define OTHER_FUNC_CTRL_BDIS_ACON_EN (1 << 4)
-#define OTHER_FUNC_CTRL_FIVEWIRE_MODE (1 << 2)
-
-#define OTHER_IFC_CTRL 0x83
-#define OTHER_IFC_CTRL_OE_INT_EN (1 << 6)
-#define OTHER_IFC_CTRL_CEA2011_MODE (1 << 5)
-#define OTHER_IFC_CTRL_FSLSSERIALMODE_4PIN (1 << 4)
-#define OTHER_IFC_CTRL_HIZ_ULPI_60MHZ_OUT (1 << 3)
-#define OTHER_IFC_CTRL_HIZ_ULPI (1 << 2)
-#define OTHER_IFC_CTRL_ALT_INT_REROUTE (1 << 0)
-
-#define OTHER_INT_EN_RISE 0x86
-#define OTHER_INT_EN_FALL 0x89
-#define OTHER_INT_STS 0x8C
-#define OTHER_INT_LATCH 0x8D
-#define OTHER_INT_VB_SESS_VLD (1 << 7)
-#define OTHER_INT_DM_HI (1 << 6) /* not valid for "latch" reg */
-#define OTHER_INT_DP_HI (1 << 5) /* not valid for "latch" reg */
-#define OTHER_INT_BDIS_ACON (1 << 3) /* not valid for "fall" regs */
-#define OTHER_INT_MANU (1 << 1)
-#define OTHER_INT_ABNORMAL_STRESS (1 << 0)
-
-#define ID_STATUS 0x96
-#define ID_RES_FLOAT (1 << 4)
-#define ID_RES_440K (1 << 3)
-#define ID_RES_200K (1 << 2)
-#define ID_RES_102K (1 << 1)
-#define ID_RES_GND (1 << 0)
-
-#define POWER_CTRL 0xAC
-#define POWER_CTRL_OTG_ENAB (1 << 5)
-
-#define OTHER_IFC_CTRL2 0xAF
-#define OTHER_IFC_CTRL2_ULPI_STP_LOW (1 << 4)
-#define OTHER_IFC_CTRL2_ULPI_TXEN_POL (1 << 3)
-#define OTHER_IFC_CTRL2_ULPI_4PIN_2430 (1 << 2)
-#define OTHER_IFC_CTRL2_USB_INT_OUTSEL_MASK (3 << 0) /* bits 0 and 1 */
-#define OTHER_IFC_CTRL2_USB_INT_OUTSEL_INT1N (0 << 0)
-#define OTHER_IFC_CTRL2_USB_INT_OUTSEL_INT2N (1 << 0)
-
-#define REG_CTRL_EN 0xB2
-#define REG_CTRL_ERROR 0xB5
-#define ULPI_I2C_CONFLICT_INTEN (1 << 0)
-
-#define OTHER_FUNC_CTRL2 0xB8
-#define OTHER_FUNC_CTRL2_VBAT_TIMER_EN (1 << 0)
-
-/* following registers do not have separate _clr and _set registers */
-#define VBUS_DEBOUNCE 0xC0
-#define ID_DEBOUNCE 0xC1
-#define VBAT_TIMER 0xD3
-#define PHY_PWR_CTRL 0xFD
-#define PHY_PWR_PHYPWD (1 << 0)
-#define PHY_CLK_CTRL 0xFE
-#define PHY_CLK_CTRL_CLOCKGATING_EN (1 << 2)
-#define PHY_CLK_CTRL_CLK32K_EN (1 << 1)
-#define REQ_PHY_DPLL_CLK (1 << 0)
-#define PHY_CLK_CTRL_STS 0xFF
-#define PHY_DPLL_CLK (1 << 0)
-
-/* In module TWL_MODULE_PM_MASTER */
-#define STS_HW_CONDITIONS 0x0F
-
-/* In module TWL_MODULE_PM_RECEIVER */
-#define VUSB_DEDICATED1 0x7D
-#define VUSB_DEDICATED2 0x7E
-#define VUSB1V5_DEV_GRP 0x71
-#define VUSB1V5_TYPE 0x72
-#define VUSB1V5_REMAP 0x73
-#define VUSB1V8_DEV_GRP 0x74
-#define VUSB1V8_TYPE 0x75
-#define VUSB1V8_REMAP 0x76
-#define VUSB3V1_DEV_GRP 0x77
-#define VUSB3V1_TYPE 0x78
-#define VUSB3V1_REMAP 0x79
-
-/* In module TWL4030_MODULE_INTBR */
-#define PMBR1 0x0D
-#define GPIO_USB_4PIN_ULPI_2430C (3 << 0)
-
-struct twl4030_usb {
- struct usb_phy phy;
- struct device *dev;
-
- /* TWL4030 internal USB regulator supplies */
- struct regulator *usb1v5;
- struct regulator *usb1v8;
- struct regulator *usb3v1;
-
- /* for vbus reporting with irqs disabled */
- spinlock_t lock;
-
- /* pin configuration */
- enum twl4030_usb_mode usb_mode;
-
- int irq;
- enum omap_musb_vbus_id_status linkstat;
- bool vbus_supplied;
- u8 asleep;
- bool irq_enabled;
-};
-
-/* internal define on top of container_of */
-#define phy_to_twl(x) container_of((x), struct twl4030_usb, phy)
-
-/*-------------------------------------------------------------------------*/
-
-static int twl4030_i2c_write_u8_verify(struct twl4030_usb *twl,
- u8 module, u8 data, u8 address)
-{
- u8 check;
-
- if ((twl_i2c_write_u8(module, data, address) >= 0) &&
- (twl_i2c_read_u8(module, &check, address) >= 0) &&
- (check == data))
- return 0;
- dev_dbg(twl->dev, "Write%d[%d,0x%x] wrote %02x but read %02x\n",
- 1, module, address, check, data);
-
- /* Failed once: Try again */
- if ((twl_i2c_write_u8(module, data, address) >= 0) &&
- (twl_i2c_read_u8(module, &check, address) >= 0) &&
- (check == data))
- return 0;
- dev_dbg(twl->dev, "Write%d[%d,0x%x] wrote %02x but read %02x\n",
- 2, module, address, check, data);
-
- /* Failed again: Return error */
- return -EBUSY;
-}
-
-#define twl4030_usb_write_verify(twl, address, data) \
- twl4030_i2c_write_u8_verify(twl, TWL_MODULE_USB, (data), (address))
-
-static inline int twl4030_usb_write(struct twl4030_usb *twl,
- u8 address, u8 data)
-{
- int ret = 0;
-
- ret = twl_i2c_write_u8(TWL_MODULE_USB, data, address);
- if (ret < 0)
- dev_dbg(twl->dev,
- "TWL4030:USB:Write[0x%x] Error %d\n", address, ret);
- return ret;
-}
-
-static inline int twl4030_readb(struct twl4030_usb *twl, u8 module, u8 address)
-{
- u8 data;
- int ret = 0;
-
- ret = twl_i2c_read_u8(module, &data, address);
- if (ret >= 0)
- ret = data;
- else
- dev_dbg(twl->dev,
- "TWL4030:readb[0x%x,0x%x] Error %d\n",
- module, address, ret);
-
- return ret;
-}
-
-static inline int twl4030_usb_read(struct twl4030_usb *twl, u8 address)
-{
- return twl4030_readb(twl, TWL_MODULE_USB, address);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline int
-twl4030_usb_set_bits(struct twl4030_usb *twl, u8 reg, u8 bits)
-{
- return twl4030_usb_write(twl, ULPI_SET(reg), bits);
-}
-
-static inline int
-twl4030_usb_clear_bits(struct twl4030_usb *twl, u8 reg, u8 bits)
-{
- return twl4030_usb_write(twl, ULPI_CLR(reg), bits);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static enum omap_musb_vbus_id_status
- twl4030_usb_linkstat(struct twl4030_usb *twl)
-{
- int status;
- enum omap_musb_vbus_id_status linkstat = OMAP_MUSB_UNKNOWN;
-
- twl->vbus_supplied = false;
-
- /*
- * For ID/VBUS sensing, see manual section 15.4.8 ...
- * except when using only battery backup power, two
- * comparators produce VBUS_PRES and ID_PRES signals,
- * which don't match docs elsewhere. But ... BIT(7)
- * and BIT(2) of STS_HW_CONDITIONS, respectively, do
- * seem to match up. If either is true the USB_PRES
- * signal is active, the OTG module is activated, and
- * its interrupt may be raised (may wake the system).
- */
- status = twl4030_readb(twl, TWL_MODULE_PM_MASTER, STS_HW_CONDITIONS);
- if (status < 0)
- dev_err(twl->dev, "USB link status err %d\n", status);
- else if (status & (BIT(7) | BIT(2))) {
- if (status & (BIT(7)))
- twl->vbus_supplied = true;
-
- if (status & BIT(2))
- linkstat = OMAP_MUSB_ID_GROUND;
- else
- linkstat = OMAP_MUSB_VBUS_VALID;
- } else {
- if (twl->linkstat != OMAP_MUSB_UNKNOWN)
- linkstat = OMAP_MUSB_VBUS_OFF;
- }
-
- dev_dbg(twl->dev, "HW_CONDITIONS 0x%02x/%d; link %d\n",
- status, status, linkstat);
-
- /* REVISIT this assumes host and peripheral controllers
- * are registered, and that both are active...
- */
-
- spin_lock_irq(&twl->lock);
- twl->linkstat = linkstat;
- spin_unlock_irq(&twl->lock);
-
- return linkstat;
-}
-
-static void twl4030_usb_set_mode(struct twl4030_usb *twl, int mode)
-{
- twl->usb_mode = mode;
-
- switch (mode) {
- case T2_USB_MODE_ULPI:
- twl4030_usb_clear_bits(twl, ULPI_IFC_CTRL,
- ULPI_IFC_CTRL_CARKITMODE);
- twl4030_usb_set_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
- twl4030_usb_clear_bits(twl, ULPI_FUNC_CTRL,
- ULPI_FUNC_CTRL_XCVRSEL_MASK |
- ULPI_FUNC_CTRL_OPMODE_MASK);
- break;
- case -1:
- /* FIXME: power on defaults */
- break;
- default:
- dev_err(twl->dev, "unsupported T2 transceiver mode %d\n",
- mode);
- break;
- };
-}
-
-static void twl4030_i2c_access(struct twl4030_usb *twl, int on)
-{
- unsigned long timeout;
- int val = twl4030_usb_read(twl, PHY_CLK_CTRL);
-
- if (val >= 0) {
- if (on) {
- /* enable DPLL to access PHY registers over I2C */
- val |= REQ_PHY_DPLL_CLK;
- WARN_ON(twl4030_usb_write_verify(twl, PHY_CLK_CTRL,
- (u8)val) < 0);
-
- timeout = jiffies + HZ;
- while (!(twl4030_usb_read(twl, PHY_CLK_CTRL_STS) &
- PHY_DPLL_CLK)
- && time_before(jiffies, timeout))
- udelay(10);
- if (!(twl4030_usb_read(twl, PHY_CLK_CTRL_STS) &
- PHY_DPLL_CLK))
- dev_err(twl->dev, "Timeout setting T2 HSUSB "
- "PHY DPLL clock\n");
- } else {
- /* let ULPI control the DPLL clock */
- val &= ~REQ_PHY_DPLL_CLK;
- WARN_ON(twl4030_usb_write_verify(twl, PHY_CLK_CTRL,
- (u8)val) < 0);
- }
- }
-}
-
-static void __twl4030_phy_power(struct twl4030_usb *twl, int on)
-{
- u8 pwr = twl4030_usb_read(twl, PHY_PWR_CTRL);
-
- if (on)
- pwr &= ~PHY_PWR_PHYPWD;
- else
- pwr |= PHY_PWR_PHYPWD;
-
- WARN_ON(twl4030_usb_write_verify(twl, PHY_PWR_CTRL, pwr) < 0);
-}
-
-static void twl4030_phy_power(struct twl4030_usb *twl, int on)
-{
- if (on) {
- regulator_enable(twl->usb3v1);
- regulator_enable(twl->usb1v8);
- /*
- * Disabling usb3v1 regulator (= writing 0 to VUSB3V1_DEV_GRP
- * in twl4030) resets the VUSB_DEDICATED2 register. This reset
- * enables VUSB3V1_SLEEP bit that remaps usb3v1 ACTIVE state to
- * SLEEP. We work around this by clearing the bit after usv3v1
- * is re-activated. This ensures that VUSB3V1 is really active.
- */
- twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2);
- regulator_enable(twl->usb1v5);
- __twl4030_phy_power(twl, 1);
- twl4030_usb_write(twl, PHY_CLK_CTRL,
- twl4030_usb_read(twl, PHY_CLK_CTRL) |
- (PHY_CLK_CTRL_CLOCKGATING_EN |
- PHY_CLK_CTRL_CLK32K_EN));
- } else {
- __twl4030_phy_power(twl, 0);
- regulator_disable(twl->usb1v5);
- regulator_disable(twl->usb1v8);
- regulator_disable(twl->usb3v1);
- }
-}
-
-static void twl4030_phy_suspend(struct twl4030_usb *twl, int controller_off)
-{
- if (twl->asleep)
- return;
-
- twl4030_phy_power(twl, 0);
- twl->asleep = 1;
- dev_dbg(twl->dev, "%s\n", __func__);
-}
-
-static void __twl4030_phy_resume(struct twl4030_usb *twl)
-{
- twl4030_phy_power(twl, 1);
- twl4030_i2c_access(twl, 1);
- twl4030_usb_set_mode(twl, twl->usb_mode);
- if (twl->usb_mode == T2_USB_MODE_ULPI)
- twl4030_i2c_access(twl, 0);
-}
-
-static void twl4030_phy_resume(struct twl4030_usb *twl)
-{
- if (!twl->asleep)
- return;
- __twl4030_phy_resume(twl);
- twl->asleep = 0;
- dev_dbg(twl->dev, "%s\n", __func__);
-}
-
-static int twl4030_usb_ldo_init(struct twl4030_usb *twl)
-{
- /* Enable writing to power configuration registers */
- twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
- TWL4030_PM_MASTER_PROTECT_KEY);
-
- twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2,
- TWL4030_PM_MASTER_PROTECT_KEY);
-
- /* Keep VUSB3V1 LDO in sleep state until VBUS/ID change detected*/
- /*twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2);*/
-
- /* input to VUSB3V1 LDO is from VBAT, not VBUS */
- twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0x14, VUSB_DEDICATED1);
-
- /* Initialize 3.1V regulator */
- twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB3V1_DEV_GRP);
-
- twl->usb3v1 = regulator_get(twl->dev, "usb3v1");
- if (IS_ERR(twl->usb3v1))
- return -ENODEV;
-
- twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB3V1_TYPE);
-
- /* Initialize 1.5V regulator */
- twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V5_DEV_GRP);
-
- twl->usb1v5 = regulator_get(twl->dev, "usb1v5");
- if (IS_ERR(twl->usb1v5))
- goto fail1;
-
- twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V5_TYPE);
-
- /* Initialize 1.8V regulator */
- twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V8_DEV_GRP);
-
- twl->usb1v8 = regulator_get(twl->dev, "usb1v8");
- if (IS_ERR(twl->usb1v8))
- goto fail2;
-
- twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V8_TYPE);
-
- /* disable access to power configuration registers */
- twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
- TWL4030_PM_MASTER_PROTECT_KEY);
-
- return 0;
-
-fail2:
- regulator_put(twl->usb1v5);
- twl->usb1v5 = NULL;
-fail1:
- regulator_put(twl->usb3v1);
- twl->usb3v1 = NULL;
- return -ENODEV;
-}
-
-static ssize_t twl4030_usb_vbus_show(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct twl4030_usb *twl = dev_get_drvdata(dev);
- unsigned long flags;
- int ret = -EINVAL;
-
- spin_lock_irqsave(&twl->lock, flags);
- ret = sprintf(buf, "%s\n",
- twl->vbus_supplied ? "on" : "off");
- spin_unlock_irqrestore(&twl->lock, flags);
-
- return ret;
-}
-static DEVICE_ATTR(vbus, 0444, twl4030_usb_vbus_show, NULL);
-
-static irqreturn_t twl4030_usb_irq(int irq, void *_twl)
-{
- struct twl4030_usb *twl = _twl;
- enum omap_musb_vbus_id_status status;
-
- status = twl4030_usb_linkstat(twl);
- if (status > 0) {
- /* FIXME add a set_power() method so that B-devices can
- * configure the charger appropriately. It's not always
- * correct to consume VBUS power, and how much current to
- * consume is a function of the USB configuration chosen
- * by the host.
- *
- * REVISIT usb_gadget_vbus_connect(...) as needed, ditto
- * its disconnect() sibling, when changing to/from the
- * USB_LINK_VBUS state. musb_hdrc won't care until it
- * starts to handle softconnect right.
- */
- if (status == OMAP_MUSB_VBUS_OFF ||
- status == OMAP_MUSB_ID_FLOAT)
- twl4030_phy_suspend(twl, 0);
- else
- twl4030_phy_resume(twl);
-
- omap_musb_mailbox(twl->linkstat);
- }
- sysfs_notify(&twl->dev->kobj, NULL, "vbus");
-
- return IRQ_HANDLED;
-}
-
-static void twl4030_usb_phy_init(struct twl4030_usb *twl)
-{
- enum omap_musb_vbus_id_status status;
-
- status = twl4030_usb_linkstat(twl);
- if (status > 0) {
- if (status == OMAP_MUSB_VBUS_OFF ||
- status == OMAP_MUSB_ID_FLOAT) {
- __twl4030_phy_power(twl, 0);
- twl->asleep = 1;
- } else {
- __twl4030_phy_resume(twl);
- twl->asleep = 0;
- }
-
- omap_musb_mailbox(twl->linkstat);
- }
- sysfs_notify(&twl->dev->kobj, NULL, "vbus");
-}
-
-static int twl4030_set_suspend(struct usb_phy *x, int suspend)
-{
- struct twl4030_usb *twl = phy_to_twl(x);
-
- if (suspend)
- twl4030_phy_suspend(twl, 1);
- else
- twl4030_phy_resume(twl);
-
- return 0;
-}
-
-static int twl4030_set_peripheral(struct usb_otg *otg,
- struct usb_gadget *gadget)
-{
- if (!otg)
- return -ENODEV;
-
- otg->gadget = gadget;
- if (!gadget)
- otg->phy->state = OTG_STATE_UNDEFINED;
-
- return 0;
-}
-
-static int twl4030_set_host(struct usb_otg *otg, struct usb_bus *host)
-{
- if (!otg)
- return -ENODEV;
-
- otg->host = host;
- if (!host)
- otg->phy->state = OTG_STATE_UNDEFINED;
-
- return 0;
-}
-
-static int twl4030_usb_probe(struct platform_device *pdev)
-{
- struct twl4030_usb_data *pdata = pdev->dev.platform_data;
- struct twl4030_usb *twl;
- int status, err;
- struct usb_otg *otg;
- struct device_node *np = pdev->dev.of_node;
-
- twl = devm_kzalloc(&pdev->dev, sizeof *twl, GFP_KERNEL);
- if (!twl)
- return -ENOMEM;
-
- if (np)
- of_property_read_u32(np, "usb_mode",
- (enum twl4030_usb_mode *)&twl->usb_mode);
- else if (pdata)
- twl->usb_mode = pdata->usb_mode;
- else {
- dev_err(&pdev->dev, "twl4030 initialized without pdata\n");
- return -EINVAL;
- }
-
- otg = devm_kzalloc(&pdev->dev, sizeof *otg, GFP_KERNEL);
- if (!otg)
- return -ENOMEM;
-
- twl->dev = &pdev->dev;
- twl->irq = platform_get_irq(pdev, 0);
- twl->vbus_supplied = false;
- twl->asleep = 1;
- twl->linkstat = OMAP_MUSB_UNKNOWN;
-
- twl->phy.dev = twl->dev;
- twl->phy.label = "twl4030";
- twl->phy.otg = otg;
- twl->phy.type = USB_PHY_TYPE_USB2;
- twl->phy.set_suspend = twl4030_set_suspend;
-
- otg->phy = &twl->phy;
- otg->set_host = twl4030_set_host;
- otg->set_peripheral = twl4030_set_peripheral;
-
- /* init spinlock for workqueue */
- spin_lock_init(&twl->lock);
-
- err = twl4030_usb_ldo_init(twl);
- if (err) {
- dev_err(&pdev->dev, "ldo init failed\n");
- return err;
- }
- usb_add_phy_dev(&twl->phy);
-
- platform_set_drvdata(pdev, twl);
- if (device_create_file(&pdev->dev, &dev_attr_vbus))
- dev_warn(&pdev->dev, "could not create sysfs file\n");
-
- /* Our job is to use irqs and status from the power module
- * to keep the transceiver disabled when nothing's connected.
- *
- * FIXME we actually shouldn't start enabling it until the
- * USB controller drivers have said they're ready, by calling
- * set_host() and/or set_peripheral() ... OTG_capable boards
- * need both handles, otherwise just one suffices.
- */
- twl->irq_enabled = true;
- status = request_threaded_irq(twl->irq, NULL, twl4030_usb_irq,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
- IRQF_ONESHOT, "twl4030_usb", twl);
- if (status < 0) {
- dev_dbg(&pdev->dev, "can't get IRQ %d, err %d\n",
- twl->irq, status);
- return status;
- }
-
- /* Power down phy or make it work according to
- * current link state.
- */
- twl4030_usb_phy_init(twl);
-
- dev_info(&pdev->dev, "Initialized TWL4030 USB module\n");
- return 0;
-}
-
-static int __exit twl4030_usb_remove(struct platform_device *pdev)
-{
- struct twl4030_usb *twl = platform_get_drvdata(pdev);
- int val;
-
- free_irq(twl->irq, twl);
- device_remove_file(twl->dev, &dev_attr_vbus);
-
- /* set transceiver mode to power on defaults */
- twl4030_usb_set_mode(twl, -1);
-
- /* autogate 60MHz ULPI clock,
- * clear dpll clock request for i2c access,
- * disable 32KHz
- */
- val = twl4030_usb_read(twl, PHY_CLK_CTRL);
- if (val >= 0) {
- val |= PHY_CLK_CTRL_CLOCKGATING_EN;
- val &= ~(PHY_CLK_CTRL_CLK32K_EN | REQ_PHY_DPLL_CLK);
- twl4030_usb_write(twl, PHY_CLK_CTRL, (u8)val);
- }
-
- /* disable complete OTG block */
- twl4030_usb_clear_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
-
- if (!twl->asleep)
- twl4030_phy_power(twl, 0);
- regulator_put(twl->usb1v5);
- regulator_put(twl->usb1v8);
- regulator_put(twl->usb3v1);
-
- return 0;
-}
-
-#ifdef CONFIG_OF
-static const struct of_device_id twl4030_usb_id_table[] = {
- { .compatible = "ti,twl4030-usb" },
- {}
-};
-MODULE_DEVICE_TABLE(of, twl4030_usb_id_table);
-#endif
-
-static struct platform_driver twl4030_usb_driver = {
- .probe = twl4030_usb_probe,
- .remove = __exit_p(twl4030_usb_remove),
- .driver = {
- .name = "twl4030_usb",
- .owner = THIS_MODULE,
- .of_match_table = of_match_ptr(twl4030_usb_id_table),
- },
-};
-
-static int __init twl4030_usb_init(void)
-{
- return platform_driver_register(&twl4030_usb_driver);
-}
-subsys_initcall(twl4030_usb_init);
-
-static void __exit twl4030_usb_exit(void)
-{
- platform_driver_unregister(&twl4030_usb_driver);
-}
-module_exit(twl4030_usb_exit);
-
-MODULE_ALIAS("platform:twl4030_usb");
-MODULE_AUTHOR("Texas Instruments, Inc, Nokia Corporation");
-MODULE_DESCRIPTION("TWL4030 USB transceiver driver");
-MODULE_LICENSE("GPL");