From: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
Move one more OMAP-specific driver out of the drivers/i2c/chips
directory ... in this case, a driver that's not yet upstream,
but is verging on being mainline-ready once it moves.
Signed-off-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/i2c/chips/Kconfig | 4
drivers/i2c/chips/Makefile | 1
drivers/i2c/chips/twl4030-usb.c | 721 --------------------------------------
drivers/usb/otg/Kconfig | 10
drivers/usb/otg/Makefile | 1
drivers/usb/otg/twl4030-usb.c | 721 ++++++++++++++++++++++++++++++++++++++
6 files changed, 732 insertions(+), 726 deletions(-)
--- a/drivers/i2c/chips/Kconfig
+++ b/drivers/i2c/chips/Kconfig
@@ -155,10 +155,6 @@ config TWL4030_MADC
to build it as a dinamically loadable module. The module will be
called twl4030-madc.ko
-config TWL4030_USB
- tristate "TWL4030 USB Transceiver Driver"
- depends on TWL4030_CORE
-
config TWL4030_PWRBUTTON
tristate "TWL4030 Power button Driver"
depends on TWL4030_CORE
--- a/drivers/i2c/chips/Makefile
+++ b/drivers/i2c/chips/Makefile
@@ -23,7 +23,6 @@ obj-$(CONFIG_SENSORS_TLV320AIC23) += tlv
obj-$(CONFIG_MENELAUS) += menelaus.o
obj-$(CONFIG_SENSORS_TSL2550) += tsl2550.o
obj-$(CONFIG_MCU_MPC8349EMITX) += mcu_mpc8349emitx.o
-obj-$(CONFIG_TWL4030_USB) += twl4030-usb.o
obj-$(CONFIG_TWL4030_POWEROFF) += twl4030-poweroff.o
obj-$(CONFIG_TWL4030_PWRBUTTON) += twl4030-pwrbutton.o
obj-$(CONFIG_TWL4030_MADC) += twl4030-madc.o
--- a/drivers/i2c/chips/twl4030-usb.c
+++ /dev/null
@@ -1,721 +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@xxxxxxxxx>
- *
- * 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/i2c/twl4030.h>
-
-
-/* Register defines */
-
-#define VENDOR_ID_LO 0x00
-#define VENDOR_ID_HI 0x01
-#define PRODUCT_ID_LO 0x02
-#define PRODUCT_ID_HI 0x03
-
-#define FUNC_CTRL 0x04
-#define FUNC_CTRL_SET 0x05
-#define FUNC_CTRL_CLR 0x06
-#define FUNC_CTRL_SUSPENDM (1 << 6)
-#define FUNC_CTRL_RESET (1 << 5)
-#define FUNC_CTRL_OPMODE_MASK (3 << 3) /* bits 3 and 4 */
-#define FUNC_CTRL_OPMODE_NORMAL (0 << 3)
-#define FUNC_CTRL_OPMODE_NONDRIVING (1 << 3)
-#define FUNC_CTRL_OPMODE_DISABLE_BIT_NRZI (2 << 3)
-#define FUNC_CTRL_TERMSELECT (1 << 2)
-#define FUNC_CTRL_XCVRSELECT_MASK (3 << 0) /* bits 0 and 1 */
-#define FUNC_CTRL_XCVRSELECT_HS (0 << 0)
-#define FUNC_CTRL_XCVRSELECT_FS (1 << 0)
-#define FUNC_CTRL_XCVRSELECT_LS (2 << 0)
-#define FUNC_CTRL_XCVRSELECT_FS4LS (3 << 0)
-
-#define IFC_CTRL 0x07
-#define IFC_CTRL_SET 0x08
-#define IFC_CTRL_CLR 0x09
-#define IFC_CTRL_INTERFACE_PROTECT_DISABLE (1 << 7)
-#define IFC_CTRL_AUTORESUME (1 << 4)
-#define IFC_CTRL_CLOCKSUSPENDM (1 << 3)
-#define IFC_CTRL_CARKITMODE (1 << 2)
-#define IFC_CTRL_FSLSSERIALMODE_3PIN (1 << 1)
-
-#define TWL4030_OTG_CTRL 0x0A
-#define TWL4030_OTG_CTRL_SET 0x0B
-#define TWL4030_OTG_CTRL_CLR 0x0C
-#define TWL4030_OTG_CTRL_DRVVBUS (1 << 5)
-#define TWL4030_OTG_CTRL_CHRGVBUS (1 << 4)
-#define TWL4030_OTG_CTRL_DISCHRGVBUS (1 << 3)
-#define TWL4030_OTG_CTRL_DMPULLDOWN (1 << 2)
-#define TWL4030_OTG_CTRL_DPPULLDOWN (1 << 1)
-#define TWL4030_OTG_CTRL_IDPULLUP (1 << 0)
-
-#define USB_INT_EN_RISE 0x0D
-#define USB_INT_EN_RISE_SET 0x0E
-#define USB_INT_EN_RISE_CLR 0x0F
-#define USB_INT_EN_FALL 0x10
-#define USB_INT_EN_FALL_SET 0x11
-#define USB_INT_EN_FALL_CLR 0x12
-#define USB_INT_STS 0x13
-#define USB_INT_LATCH 0x14
-#define USB_INT_IDGND (1 << 4)
-#define USB_INT_SESSEND (1 << 3)
-#define USB_INT_SESSVALID (1 << 2)
-#define USB_INT_VBUSVALID (1 << 1)
-#define USB_INT_HOSTDISCONNECT (1 << 0)
-
-#define CARKIT_CTRL 0x19
-#define CARKIT_CTRL_SET 0x1A
-#define CARKIT_CTRL_CLR 0x1B
-#define CARKIT_CTRL_MICEN (1 << 6)
-#define CARKIT_CTRL_SPKRIGHTEN (1 << 5)
-#define CARKIT_CTRL_SPKLEFTEN (1 << 4)
-#define CARKIT_CTRL_RXDEN (1 << 3)
-#define CARKIT_CTRL_TXDEN (1 << 2)
-#define CARKIT_CTRL_IDGNDDRV (1 << 1)
-#define CARKIT_CTRL_CARKITPWR (1 << 0)
-#define CARKIT_PLS_CTRL 0x22
-#define CARKIT_PLS_CTRL_SET 0x23
-#define CARKIT_PLS_CTRL_CLR 0x24
-#define CARKIT_PLS_CTRL_SPKRRIGHT_BIASEN (1 << 3)
-#define CARKIT_PLS_CTRL_SPKRLEFT_BIASEN (1 << 2)
-#define CARKIT_PLS_CTRL_RXPLSEN (1 << 1)
-#define CARKIT_PLS_CTRL_TXPLSEN (1 << 0)
-
-#define MCPC_CTRL 0x30
-#define MCPC_CTRL_SET 0x31
-#define MCPC_CTRL_CLR 0x32
-#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_SET 0x34
-#define MCPC_IO_CTRL_CLR 0x35
-#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_SET 0x37
-#define MCPC_CTRL2_CLR 0x38
-#define MCPC_CTRL2_MCPC_CK_EN (1 << 0)
-
-#define OTHER_FUNC_CTRL 0x80
-#define OTHER_FUNC_CTRL_SET 0x81
-#define OTHER_FUNC_CTRL_CLR 0x82
-#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_SET 0x84
-#define OTHER_IFC_CTRL_CLR 0x85
-#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_RISE_SET 0x87
-#define OTHER_INT_EN_RISE_CLR 0x88
-#define OTHER_INT_EN_FALL 0x89
-#define OTHER_INT_EN_FALL_SET 0x8A
-#define OTHER_INT_EN_FALL_CLR 0x8B
-#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_SET 0xAD
-#define POWER_CTRL_CLR 0xAE
-#define POWER_CTRL_OTG_ENAB (1 << 5)
-
-#define OTHER_IFC_CTRL2 0xAF
-#define OTHER_IFC_CTRL2_SET 0xB0
-#define OTHER_IFC_CTRL2_CLR 0xB1
-#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_EN_SET 0xB3
-#define REG_CTRL_EN_CLR 0xB4
-#define REG_CTRL_ERROR 0xB5
-#define ULPI_I2C_CONFLICT_INTEN (1 << 0)
-
-#define OTHER_FUNC_CTRL2 0xB8
-#define OTHER_FUNC_CTRL2_SET 0xB9
-#define OTHER_FUNC_CTRL2_CLR 0xBA
-#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 TWL4030_MODULE_PM_MASTER */
-#define PROTECT_KEY 0x0E
-
-/* In module TWL4030_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)
-
-
-
-enum linkstat {
- USB_LINK_UNKNOWN = 0,
- USB_LINK_NONE,
- USB_LINK_VBUS,
- USB_LINK_ID,
-};
-
-struct twl4030_usb {
- struct otg_transceiver otg;
- struct device *dev;
-
- /* for vbus reporting with irqs disabled */
- spinlock_t lock;
-
- /* pin configuration */
- enum twl4030_usb_mode usb_mode;
-
- int irq;
- u8 linkstat;
- u8 asleep;
- bool irq_enabled;
-};
-
-/* internal define on top of container_of */
-#define xceiv_to_twl(x) container_of((x), struct twl4030_usb, otg);
-
-/*-------------------------------------------------------------------------*/
-
-static int twl4030_i2c_write_u8_verify(struct twl4030_usb *twl,
- u8 module, u8 data, u8 address)
-{
- u8 check;
-
- if ((twl4030_i2c_write_u8(module, data, address) >= 0) &&
- (twl4030_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 ((twl4030_i2c_write_u8(module, data, address) >= 0) &&
- (twl4030_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, TWL4030_MODULE_USB, (data), (address))
-
-static inline int twl4030_usb_write(struct twl4030_usb *twl,
- u8 address, u8 data)
-{
- int ret = 0;
-
- ret = twl4030_i2c_write_u8(TWL4030_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 = twl4030_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, TWL4030_MODULE_USB, address);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline int
-twl4030_usb_set_bits(struct twl4030_usb *twl, u8 reg, u8 bits)
-{
- return twl4030_usb_write(twl, reg + 1, bits);
-}
-
-static inline int
-twl4030_usb_clear_bits(struct twl4030_usb *twl, u8 reg, u8 bits)
-{
- return twl4030_usb_write(twl, reg + 2, bits);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static enum linkstat twl4030_usb_linkstat(struct twl4030_usb *twl)
-{
- int status;
- int linkstat = USB_LINK_UNKNOWN;
-
- /* STS_HW_CONDITIONS */
- status = twl4030_readb(twl, TWL4030_MODULE_PM_MASTER, 0x0f);
- if (status < 0)
- dev_err(twl->dev, "USB link status err %d\n", status);
- else if (status & BIT(7))
- linkstat = USB_LINK_VBUS;
- else if (status & BIT(2))
- linkstat = USB_LINK_ID;
- else
- linkstat = USB_LINK_NONE;
-
- 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;
- if (linkstat == USB_LINK_ID) {
- twl->otg.default_a = true;
- twl->otg.state = OTG_STATE_A_IDLE;
- } else {
- twl->otg.default_a = false;
- twl->otg.state = OTG_STATE_B_IDLE;
- }
- 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, IFC_CTRL, IFC_CTRL_CARKITMODE);
- twl4030_usb_set_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
- twl4030_usb_clear_bits(twl, FUNC_CTRL,
- FUNC_CTRL_XCVRSELECT_MASK |
- 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;
-
- pwr = twl4030_usb_read(twl, PHY_PWR_CTRL);
- if (on) {
- pwr &= ~PHY_PWR_PHYPWD;
- WARN_ON(twl4030_usb_write_verify(twl, PHY_PWR_CTRL, pwr) < 0);
- 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 {
- pwr |= PHY_PWR_PHYPWD;
- WARN_ON(twl4030_usb_write_verify(twl, PHY_PWR_CTRL, pwr) < 0);
- }
-}
-
-static void twl4030_phy_suspend(struct twl4030_usb *twl, int controller_off)
-{
- if (twl->asleep)
- return;
-
- twl4030_phy_power(twl, 0);
- twl->asleep = 1;
-}
-
-static void twl4030_phy_resume(struct twl4030_usb *twl)
-{
- if (!twl->asleep)
- return;
-
- 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);
- twl->asleep = 0;
-}
-
-static void twl4030_usb_ldo_init(struct twl4030_usb *twl)
-{
- /* Enable writing to power configuration registers */
- twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0xC0, PROTECT_KEY);
- twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0x0C, PROTECT_KEY);
-
- /* put VUSB3V1 LDO in active state */
- twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2);
-
- /* input to VUSB3V1 LDO is from VBAT, not VBUS */
- twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x14, VUSB_DEDICATED1);
-
- /* turn on 3.1V regulator */
- twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x20, VUSB3V1_DEV_GRP);
- twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0, VUSB3V1_TYPE);
-
- /* turn on 1.5V regulator */
- twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x20, VUSB1V5_DEV_GRP);
- twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0, VUSB1V5_TYPE);
-
- /* turn on 1.8V regulator */
- twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x20, VUSB1V8_DEV_GRP);
- twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0, VUSB1V8_TYPE);
-
- /* disable access to power configuration registers */
- twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, PROTECT_KEY);
-}
-
-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->linkstat == USB_LINK_VBUS) ? "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;
- int status;
-
-#ifdef CONFIG_LOCKDEP
- /* WORKAROUND for lockdep forcing IRQF_DISABLED on us, which
- * we don't want and can't tolerate. Although it might be
- * friendlier not to borrow this thread context...
- */
- local_irq_enable();
-#endif
-
- status = twl4030_usb_linkstat(twl);
- if (status != USB_LINK_UNKNOWN) {
-
- /* 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.
- */
- twl4030charger_usb_en(status == USB_LINK_VBUS);
-
- if (status == USB_LINK_NONE)
- twl4030_phy_suspend(twl, 0);
- else
- twl4030_phy_resume(twl);
- }
- sysfs_notify(&twl->dev->kobj, NULL, "vbus");
-
- return IRQ_HANDLED;
-}
-
-static int twl4030_set_suspend(struct otg_transceiver *x, int suspend)
-{
- struct twl4030_usb *twl = xceiv_to_twl(x);
-
- if (suspend)
- twl4030_phy_suspend(twl, 1);
- else
- twl4030_phy_resume(twl);
-
- return 0;
-}
-
-static int twl4030_set_peripheral(struct otg_transceiver *x,
- struct usb_gadget *gadget)
-{
- struct twl4030_usb *twl;
-
- if (!x)
- return -ENODEV;
-
- twl = xceiv_to_twl(x);
- twl->otg.gadget = gadget;
- if (!gadget)
- twl->otg.state = OTG_STATE_UNDEFINED;
-
- return 0;
-}
-
-static int twl4030_set_host(struct otg_transceiver *x, struct usb_bus *host)
-{
- struct twl4030_usb *twl;
-
- if (!x)
- return -ENODEV;
-
- twl = xceiv_to_twl(x);
- twl->otg.host = host;
- if (!host)
- twl->otg.state = OTG_STATE_UNDEFINED;
-
- return 0;
-}
-
-static int __init twl4030_usb_probe(struct platform_device *pdev)
-{
- struct twl4030_usb_data *pdata = pdev->dev.platform_data;
- struct twl4030_usb *twl;
- int status;
-
- if (!pdata) {
- dev_dbg(&pdev->dev, "platform_data not available\n");
- return -EINVAL;
- }
-
- twl = kzalloc(sizeof *twl, GFP_KERNEL);
- if (!twl)
- return -ENOMEM;
-
- twl->dev = &pdev->dev;
- twl->irq = platform_get_irq(pdev, 0);
- twl->otg.dev = twl->dev;
- twl->otg.label = "twl4030";
- twl->otg.set_host = twl4030_set_host;
- twl->otg.set_peripheral = twl4030_set_peripheral;
- twl->otg.set_suspend = twl4030_set_suspend;
- twl->usb_mode = pdata->usb_mode;
- twl->asleep = 1;
-
- /* init spinlock for workqueue */
- spin_lock_init(&twl->lock);
-
- twl4030_usb_ldo_init(twl);
- otg_set_transceiver(&twl->otg);
-
- 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_irq(twl->irq, twl4030_usb_irq,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
- "twl4030_usb", twl);
- if (status < 0) {
- dev_dbg(&pdev->dev, "can't get IRQ %d, err %d\n",
- twl->irq, status);
- kfree(twl);
- return status;
- }
-
- /* The IRQ handler just handles changes from the previous states
- * of the ID and VBUS pins ... in probe() we must initialize that
- * previous state. The easy way: fake an IRQ.
- *
- * REVISIT: a real IRQ might have happened already, if PREEMPT is
- * enabled. Else the IRQ may not yet be configured or enabled,
- * because of scheduling delays.
- */
- twl4030_usb_irq(twl->irq, 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);
-
- twl4030_phy_power(twl, 0);
-
- kfree(twl);
-
- return 0;
-}
-
-static struct platform_driver twl4030_usb_driver = {
- .probe = twl4030_usb_probe,
- .remove = __exit_p(twl4030_remove),
- .driver = {
- .name = "twl4030_usb",
- .owner = THIS_MODULE,
- },
-};
-
-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");
--- a/drivers/usb/otg/Kconfig
+++ b/drivers/usb/otg/Kconfig
@@ -41,4 +41,14 @@ config ISP1301_OMAP
This driver can also be built as a module. If so, the module
will be called isp1301_omap.
+config TWL4030_USB
+ tristate "TWL4030 USB Transceiver Driver"
+ depends on TWL4030_CORE
+ select USB_OTG_UTILS
+ help
+ Enable this to support the USB OTG transceiver on TWL4030
+ family chips (including the TWL5030 and TPS659x0 devices).
+ This is transceiver supports high and full speed devices
+ plus, in host mode, low speed.
+
endif # USB || OTG
--- a/drivers/usb/otg/Makefile
+++ b/drivers/usb/otg/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_USB_OTG_UTILS) += otg.o
# transceiver drivers
obj-$(CONFIG_USB_GPIO_VBUS) += gpio_vbus.o
obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o
+obj-$(CONFIG_TWL4030_USB) += twl4030-usb.o
ccflags-$(CONFIG_USB_DEBUG) += -DDEBUG
ccflags-$(CONFIG_USB_GADGET_DEBUG) += -DDEBUG
--- /dev/null
+++ b/drivers/usb/otg/twl4030-usb.c
@@ -0,0 +1,721 @@
+/*
+ * 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@xxxxxxxxx>
+ *
+ * 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/i2c/twl4030.h>
+
+
+/* Register defines */
+
+#define VENDOR_ID_LO 0x00
+#define VENDOR_ID_HI 0x01
+#define PRODUCT_ID_LO 0x02
+#define PRODUCT_ID_HI 0x03
+
+#define FUNC_CTRL 0x04
+#define FUNC_CTRL_SET 0x05
+#define FUNC_CTRL_CLR 0x06
+#define FUNC_CTRL_SUSPENDM (1 << 6)
+#define FUNC_CTRL_RESET (1 << 5)
+#define FUNC_CTRL_OPMODE_MASK (3 << 3) /* bits 3 and 4 */
+#define FUNC_CTRL_OPMODE_NORMAL (0 << 3)
+#define FUNC_CTRL_OPMODE_NONDRIVING (1 << 3)
+#define FUNC_CTRL_OPMODE_DISABLE_BIT_NRZI (2 << 3)
+#define FUNC_CTRL_TERMSELECT (1 << 2)
+#define FUNC_CTRL_XCVRSELECT_MASK (3 << 0) /* bits 0 and 1 */
+#define FUNC_CTRL_XCVRSELECT_HS (0 << 0)
+#define FUNC_CTRL_XCVRSELECT_FS (1 << 0)
+#define FUNC_CTRL_XCVRSELECT_LS (2 << 0)
+#define FUNC_CTRL_XCVRSELECT_FS4LS (3 << 0)
+
+#define IFC_CTRL 0x07
+#define IFC_CTRL_SET 0x08
+#define IFC_CTRL_CLR 0x09
+#define IFC_CTRL_INTERFACE_PROTECT_DISABLE (1 << 7)
+#define IFC_CTRL_AUTORESUME (1 << 4)
+#define IFC_CTRL_CLOCKSUSPENDM (1 << 3)
+#define IFC_CTRL_CARKITMODE (1 << 2)
+#define IFC_CTRL_FSLSSERIALMODE_3PIN (1 << 1)
+
+#define TWL4030_OTG_CTRL 0x0A
+#define TWL4030_OTG_CTRL_SET 0x0B
+#define TWL4030_OTG_CTRL_CLR 0x0C
+#define TWL4030_OTG_CTRL_DRVVBUS (1 << 5)
+#define TWL4030_OTG_CTRL_CHRGVBUS (1 << 4)
+#define TWL4030_OTG_CTRL_DISCHRGVBUS (1 << 3)
+#define TWL4030_OTG_CTRL_DMPULLDOWN (1 << 2)
+#define TWL4030_OTG_CTRL_DPPULLDOWN (1 << 1)
+#define TWL4030_OTG_CTRL_IDPULLUP (1 << 0)
+
+#define USB_INT_EN_RISE 0x0D
+#define USB_INT_EN_RISE_SET 0x0E
+#define USB_INT_EN_RISE_CLR 0x0F
+#define USB_INT_EN_FALL 0x10
+#define USB_INT_EN_FALL_SET 0x11
+#define USB_INT_EN_FALL_CLR 0x12
+#define USB_INT_STS 0x13
+#define USB_INT_LATCH 0x14
+#define USB_INT_IDGND (1 << 4)
+#define USB_INT_SESSEND (1 << 3)
+#define USB_INT_SESSVALID (1 << 2)
+#define USB_INT_VBUSVALID (1 << 1)
+#define USB_INT_HOSTDISCONNECT (1 << 0)
+
+#define CARKIT_CTRL 0x19
+#define CARKIT_CTRL_SET 0x1A
+#define CARKIT_CTRL_CLR 0x1B
+#define CARKIT_CTRL_MICEN (1 << 6)
+#define CARKIT_CTRL_SPKRIGHTEN (1 << 5)
+#define CARKIT_CTRL_SPKLEFTEN (1 << 4)
+#define CARKIT_CTRL_RXDEN (1 << 3)
+#define CARKIT_CTRL_TXDEN (1 << 2)
+#define CARKIT_CTRL_IDGNDDRV (1 << 1)
+#define CARKIT_CTRL_CARKITPWR (1 << 0)
+#define CARKIT_PLS_CTRL 0x22
+#define CARKIT_PLS_CTRL_SET 0x23
+#define CARKIT_PLS_CTRL_CLR 0x24
+#define CARKIT_PLS_CTRL_SPKRRIGHT_BIASEN (1 << 3)
+#define CARKIT_PLS_CTRL_SPKRLEFT_BIASEN (1 << 2)
+#define CARKIT_PLS_CTRL_RXPLSEN (1 << 1)
+#define CARKIT_PLS_CTRL_TXPLSEN (1 << 0)
+
+#define MCPC_CTRL 0x30
+#define MCPC_CTRL_SET 0x31
+#define MCPC_CTRL_CLR 0x32
+#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_SET 0x34
+#define MCPC_IO_CTRL_CLR 0x35
+#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_SET 0x37
+#define MCPC_CTRL2_CLR 0x38
+#define MCPC_CTRL2_MCPC_CK_EN (1 << 0)
+
+#define OTHER_FUNC_CTRL 0x80
+#define OTHER_FUNC_CTRL_SET 0x81
+#define OTHER_FUNC_CTRL_CLR 0x82
+#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_SET 0x84
+#define OTHER_IFC_CTRL_CLR 0x85
+#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_RISE_SET 0x87
+#define OTHER_INT_EN_RISE_CLR 0x88
+#define OTHER_INT_EN_FALL 0x89
+#define OTHER_INT_EN_FALL_SET 0x8A
+#define OTHER_INT_EN_FALL_CLR 0x8B
+#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_SET 0xAD
+#define POWER_CTRL_CLR 0xAE
+#define POWER_CTRL_OTG_ENAB (1 << 5)
+
+#define OTHER_IFC_CTRL2 0xAF
+#define OTHER_IFC_CTRL2_SET 0xB0
+#define OTHER_IFC_CTRL2_CLR 0xB1
+#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_EN_SET 0xB3
+#define REG_CTRL_EN_CLR 0xB4
+#define REG_CTRL_ERROR 0xB5
+#define ULPI_I2C_CONFLICT_INTEN (1 << 0)
+
+#define OTHER_FUNC_CTRL2 0xB8
+#define OTHER_FUNC_CTRL2_SET 0xB9
+#define OTHER_FUNC_CTRL2_CLR 0xBA
+#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 TWL4030_MODULE_PM_MASTER */
+#define PROTECT_KEY 0x0E
+
+/* In module TWL4030_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)
+
+
+
+enum linkstat {
+ USB_LINK_UNKNOWN = 0,
+ USB_LINK_NONE,
+ USB_LINK_VBUS,
+ USB_LINK_ID,
+};
+
+struct twl4030_usb {
+ struct otg_transceiver otg;
+ struct device *dev;
+
+ /* for vbus reporting with irqs disabled */
+ spinlock_t lock;
+
+ /* pin configuration */
+ enum twl4030_usb_mode usb_mode;
+
+ int irq;
+ u8 linkstat;
+ u8 asleep;
+ bool irq_enabled;
+};
+
+/* internal define on top of container_of */
+#define xceiv_to_twl(x) container_of((x), struct twl4030_usb, otg);
+
+/*-------------------------------------------------------------------------*/
+
+static int twl4030_i2c_write_u8_verify(struct twl4030_usb *twl,
+ u8 module, u8 data, u8 address)
+{
+ u8 check;
+
+ if ((twl4030_i2c_write_u8(module, data, address) >= 0) &&
+ (twl4030_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 ((twl4030_i2c_write_u8(module, data, address) >= 0) &&
+ (twl4030_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, TWL4030_MODULE_USB, (data), (address))
+
+static inline int twl4030_usb_write(struct twl4030_usb *twl,
+ u8 address, u8 data)
+{
+ int ret = 0;
+
+ ret = twl4030_i2c_write_u8(TWL4030_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 = twl4030_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, TWL4030_MODULE_USB, address);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static inline int
+twl4030_usb_set_bits(struct twl4030_usb *twl, u8 reg, u8 bits)
+{
+ return twl4030_usb_write(twl, reg + 1, bits);
+}
+
+static inline int
+twl4030_usb_clear_bits(struct twl4030_usb *twl, u8 reg, u8 bits)
+{
+ return twl4030_usb_write(twl, reg + 2, bits);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static enum linkstat twl4030_usb_linkstat(struct twl4030_usb *twl)
+{
+ int status;
+ int linkstat = USB_LINK_UNKNOWN;
+
+ /* STS_HW_CONDITIONS */
+ status = twl4030_readb(twl, TWL4030_MODULE_PM_MASTER, 0x0f);
+ if (status < 0)
+ dev_err(twl->dev, "USB link status err %d\n", status);
+ else if (status & BIT(7))
+ linkstat = USB_LINK_VBUS;
+ else if (status & BIT(2))
+ linkstat = USB_LINK_ID;
+ else
+ linkstat = USB_LINK_NONE;
+
+ 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;
+ if (linkstat == USB_LINK_ID) {
+ twl->otg.default_a = true;
+ twl->otg.state = OTG_STATE_A_IDLE;
+ } else {
+ twl->otg.default_a = false;
+ twl->otg.state = OTG_STATE_B_IDLE;
+ }
+ 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, IFC_CTRL, IFC_CTRL_CARKITMODE);
+ twl4030_usb_set_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
+ twl4030_usb_clear_bits(twl, FUNC_CTRL,
+ FUNC_CTRL_XCVRSELECT_MASK |
+ 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;
+
+ pwr = twl4030_usb_read(twl, PHY_PWR_CTRL);
+ if (on) {
+ pwr &= ~PHY_PWR_PHYPWD;
+ WARN_ON(twl4030_usb_write_verify(twl, PHY_PWR_CTRL, pwr) < 0);
+ 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 {
+ pwr |= PHY_PWR_PHYPWD;
+ WARN_ON(twl4030_usb_write_verify(twl, PHY_PWR_CTRL, pwr) < 0);
+ }
+}
+
+static void twl4030_phy_suspend(struct twl4030_usb *twl, int controller_off)
+{
+ if (twl->asleep)
+ return;
+
+ twl4030_phy_power(twl, 0);
+ twl->asleep = 1;
+}
+
+static void twl4030_phy_resume(struct twl4030_usb *twl)
+{
+ if (!twl->asleep)
+ return;
+
+ 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);
+ twl->asleep = 0;
+}
+
+static void twl4030_usb_ldo_init(struct twl4030_usb *twl)
+{
+ /* Enable writing to power configuration registers */
+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0xC0, PROTECT_KEY);
+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0x0C, PROTECT_KEY);
+
+ /* put VUSB3V1 LDO in active state */
+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2);
+
+ /* input to VUSB3V1 LDO is from VBAT, not VBUS */
+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x14, VUSB_DEDICATED1);
+
+ /* turn on 3.1V regulator */
+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x20, VUSB3V1_DEV_GRP);
+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0, VUSB3V1_TYPE);
+
+ /* turn on 1.5V regulator */
+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x20, VUSB1V5_DEV_GRP);
+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0, VUSB1V5_TYPE);
+
+ /* turn on 1.8V regulator */
+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0x20, VUSB1V8_DEV_GRP);
+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, 0, VUSB1V8_TYPE);
+
+ /* disable access to power configuration registers */
+ twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, 0, PROTECT_KEY);
+}
+
+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->linkstat == USB_LINK_VBUS) ? "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;
+ int status;
+
+#ifdef CONFIG_LOCKDEP
+ /* WORKAROUND for lockdep forcing IRQF_DISABLED on us, which
+ * we don't want and can't tolerate. Although it might be
+ * friendlier not to borrow this thread context...
+ */
+ local_irq_enable();
+#endif
+
+ status = twl4030_usb_linkstat(twl);
+ if (status != USB_LINK_UNKNOWN) {
+
+ /* 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.
+ */
+ twl4030charger_usb_en(status == USB_LINK_VBUS);
+
+ if (status == USB_LINK_NONE)
+ twl4030_phy_suspend(twl, 0);
+ else
+ twl4030_phy_resume(twl);
+ }
+ sysfs_notify(&twl->dev->kobj, NULL, "vbus");
+
+ return IRQ_HANDLED;
+}
+
+static int twl4030_set_suspend(struct otg_transceiver *x, int suspend)
+{
+ struct twl4030_usb *twl = xceiv_to_twl(x);
+
+ if (suspend)
+ twl4030_phy_suspend(twl, 1);
+ else
+ twl4030_phy_resume(twl);
+
+ return 0;
+}
+
+static int twl4030_set_peripheral(struct otg_transceiver *x,
+ struct usb_gadget *gadget)
+{
+ struct twl4030_usb *twl;
+
+ if (!x)
+ return -ENODEV;
+
+ twl = xceiv_to_twl(x);
+ twl->otg.gadget = gadget;
+ if (!gadget)
+ twl->otg.state = OTG_STATE_UNDEFINED;
+
+ return 0;
+}
+
+static int twl4030_set_host(struct otg_transceiver *x, struct usb_bus *host)
+{
+ struct twl4030_usb *twl;
+
+ if (!x)
+ return -ENODEV;
+
+ twl = xceiv_to_twl(x);
+ twl->otg.host = host;
+ if (!host)
+ twl->otg.state = OTG_STATE_UNDEFINED;
+
+ return 0;
+}
+
+static int __init twl4030_usb_probe(struct platform_device *pdev)
+{
+ struct twl4030_usb_data *pdata = pdev->dev.platform_data;
+ struct twl4030_usb *twl;
+ int status;
+
+ if (!pdata) {
+ dev_dbg(&pdev->dev, "platform_data not available\n");
+ return -EINVAL;
+ }
+
+ twl = kzalloc(sizeof *twl, GFP_KERNEL);
+ if (!twl)
+ return -ENOMEM;
+
+ twl->dev = &pdev->dev;
+ twl->irq = platform_get_irq(pdev, 0);
+ twl->otg.dev = twl->dev;
+ twl->otg.label = "twl4030";
+ twl->otg.set_host = twl4030_set_host;
+ twl->otg.set_peripheral = twl4030_set_peripheral;
+ twl->otg.set_suspend = twl4030_set_suspend;
+ twl->usb_mode = pdata->usb_mode;
+ twl->asleep = 1;
+
+ /* init spinlock for workqueue */
+ spin_lock_init(&twl->lock);
+
+ twl4030_usb_ldo_init(twl);
+ otg_set_transceiver(&twl->otg);
+
+ 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_irq(twl->irq, twl4030_usb_irq,
+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+ "twl4030_usb", twl);
+ if (status < 0) {
+ dev_dbg(&pdev->dev, "can't get IRQ %d, err %d\n",
+ twl->irq, status);
+ kfree(twl);
+ return status;
+ }
+
+ /* The IRQ handler just handles changes from the previous states
+ * of the ID and VBUS pins ... in probe() we must initialize that
+ * previous state. The easy way: fake an IRQ.
+ *
+ * REVISIT: a real IRQ might have happened already, if PREEMPT is
+ * enabled. Else the IRQ may not yet be configured or enabled,
+ * because of scheduling delays.
+ */
+ twl4030_usb_irq(twl->irq, 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);
+
+ twl4030_phy_power(twl, 0);
+
+ kfree(twl);
+
+ return 0;
+}
+
+static struct platform_driver twl4030_usb_driver = {
+ .probe = twl4030_usb_probe,
+ .remove = __exit_p(twl4030_remove),
+ .driver = {
+ .name = "twl4030_usb",
+ .owner = THIS_MODULE,
+ },
+};
+
+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");
--
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