2008-12-19 04:25:44 +08:00
|
|
|
/*
|
|
|
|
* 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>
|
2013-09-27 14:23:27 +08:00
|
|
|
#include <linux/phy/phy.h>
|
2012-06-22 20:10:52 +08:00
|
|
|
#include <linux/usb/musb-omap.h>
|
2010-03-31 15:18:05 +08:00
|
|
|
#include <linux/usb/ulpi.h>
|
2009-12-14 03:05:51 +08:00
|
|
|
#include <linux/i2c/twl.h>
|
2009-02-20 20:02:31 +08:00
|
|
|
#include <linux/regulator/consumer.h>
|
|
|
|
#include <linux/err.h>
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 16:04:11 +08:00
|
|
|
#include <linux/slab.h>
|
2008-12-19 04:25:44 +08:00
|
|
|
|
|
|
|
/* 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)
|
|
|
|
|
2012-11-13 17:43:38 +08:00
|
|
|
/* In module TWL_MODULE_PM_MASTER */
|
2009-04-01 03:26:10 +08:00
|
|
|
#define STS_HW_CONDITIONS 0x0F
|
2008-12-19 04:25:44 +08:00
|
|
|
|
2012-11-13 17:43:38 +08:00
|
|
|
/* In module TWL_MODULE_PM_RECEIVER */
|
2008-12-19 04:25:44 +08:00
|
|
|
#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 {
|
2012-02-13 19:24:11 +08:00
|
|
|
struct usb_phy phy;
|
2008-12-19 04:25:44 +08:00
|
|
|
struct device *dev;
|
|
|
|
|
2009-02-20 20:02:31 +08:00
|
|
|
/* TWL4030 internal USB regulator supplies */
|
|
|
|
struct regulator *usb1v5;
|
|
|
|
struct regulator *usb1v8;
|
|
|
|
struct regulator *usb3v1;
|
|
|
|
|
2008-12-19 04:25:44 +08:00
|
|
|
/* for vbus reporting with irqs disabled */
|
|
|
|
spinlock_t lock;
|
|
|
|
|
|
|
|
/* pin configuration */
|
|
|
|
enum twl4030_usb_mode usb_mode;
|
|
|
|
|
|
|
|
int irq;
|
2012-06-22 20:10:52 +08:00
|
|
|
enum omap_musb_vbus_id_status linkstat;
|
2011-04-02 05:02:07 +08:00
|
|
|
bool vbus_supplied;
|
2008-12-19 04:25:44 +08:00
|
|
|
u8 asleep;
|
|
|
|
bool irq_enabled;
|
2013-03-18 02:23:24 +08:00
|
|
|
|
|
|
|
struct delayed_work id_workaround_work;
|
2008-12-19 04:25:44 +08:00
|
|
|
};
|
|
|
|
|
|
|
|
/* internal define on top of container_of */
|
2012-02-13 19:24:11 +08:00
|
|
|
#define phy_to_twl(x) container_of((x), struct twl4030_usb, phy)
|
2008-12-19 04:25:44 +08:00
|
|
|
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
|
|
|
|
static int twl4030_i2c_write_u8_verify(struct twl4030_usb *twl,
|
|
|
|
u8 module, u8 data, u8 address)
|
|
|
|
{
|
|
|
|
u8 check;
|
|
|
|
|
2009-12-14 04:23:33 +08:00
|
|
|
if ((twl_i2c_write_u8(module, data, address) >= 0) &&
|
|
|
|
(twl_i2c_read_u8(module, &check, address) >= 0) &&
|
2008-12-19 04:25:44 +08:00
|
|
|
(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 */
|
2009-12-14 04:23:33 +08:00
|
|
|
if ((twl_i2c_write_u8(module, data, address) >= 0) &&
|
|
|
|
(twl_i2c_read_u8(module, &check, address) >= 0) &&
|
2008-12-19 04:25:44 +08:00
|
|
|
(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) \
|
2012-11-13 17:43:38 +08:00
|
|
|
twl4030_i2c_write_u8_verify(twl, TWL_MODULE_USB, (data), (address))
|
2008-12-19 04:25:44 +08:00
|
|
|
|
|
|
|
static inline int twl4030_usb_write(struct twl4030_usb *twl,
|
|
|
|
u8 address, u8 data)
|
|
|
|
{
|
|
|
|
int ret = 0;
|
|
|
|
|
2012-11-13 17:43:38 +08:00
|
|
|
ret = twl_i2c_write_u8(TWL_MODULE_USB, data, address);
|
2008-12-19 04:25:44 +08:00
|
|
|
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;
|
|
|
|
|
2009-12-14 04:23:33 +08:00
|
|
|
ret = twl_i2c_read_u8(module, &data, address);
|
2008-12-19 04:25:44 +08:00
|
|
|
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)
|
|
|
|
{
|
2012-11-13 17:43:38 +08:00
|
|
|
return twl4030_readb(twl, TWL_MODULE_USB, address);
|
2008-12-19 04:25:44 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
|
|
|
|
static inline int
|
|
|
|
twl4030_usb_set_bits(struct twl4030_usb *twl, u8 reg, u8 bits)
|
|
|
|
{
|
2010-03-31 15:18:05 +08:00
|
|
|
return twl4030_usb_write(twl, ULPI_SET(reg), bits);
|
2008-12-19 04:25:44 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline int
|
|
|
|
twl4030_usb_clear_bits(struct twl4030_usb *twl, u8 reg, u8 bits)
|
|
|
|
{
|
2010-03-31 15:18:05 +08:00
|
|
|
return twl4030_usb_write(twl, ULPI_CLR(reg), bits);
|
2008-12-19 04:25:44 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
|
2013-03-24 23:36:53 +08:00
|
|
|
static bool twl4030_is_driving_vbus(struct twl4030_usb *twl)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = twl4030_usb_read(twl, PHY_CLK_CTRL_STS);
|
|
|
|
if (ret < 0 || !(ret & PHY_DPLL_CLK))
|
|
|
|
/*
|
|
|
|
* if clocks are off, registers are not updated,
|
|
|
|
* but we can assume we don't drive VBUS in this case
|
|
|
|
*/
|
|
|
|
return false;
|
|
|
|
|
|
|
|
ret = twl4030_usb_read(twl, ULPI_OTG_CTRL);
|
|
|
|
if (ret < 0)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return (ret & (ULPI_OTG_DRVVBUS | ULPI_OTG_CHRGVBUS)) ? true : false;
|
|
|
|
}
|
|
|
|
|
2012-06-22 20:10:52 +08:00
|
|
|
static enum omap_musb_vbus_id_status
|
|
|
|
twl4030_usb_linkstat(struct twl4030_usb *twl)
|
2008-12-19 04:25:44 +08:00
|
|
|
{
|
|
|
|
int status;
|
2012-06-22 20:10:52 +08:00
|
|
|
enum omap_musb_vbus_id_status linkstat = OMAP_MUSB_UNKNOWN;
|
2008-12-19 04:25:44 +08:00
|
|
|
|
2011-04-02 05:02:07 +08:00
|
|
|
twl->vbus_supplied = false;
|
|
|
|
|
2009-04-01 03:26:10 +08:00
|
|
|
/*
|
|
|
|
* 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).
|
|
|
|
*/
|
2012-11-13 17:43:38 +08:00
|
|
|
status = twl4030_readb(twl, TWL_MODULE_PM_MASTER, STS_HW_CONDITIONS);
|
2008-12-19 04:25:44 +08:00
|
|
|
if (status < 0)
|
|
|
|
dev_err(twl->dev, "USB link status err %d\n", status);
|
2009-04-01 03:26:10 +08:00
|
|
|
else if (status & (BIT(7) | BIT(2))) {
|
2013-03-24 23:36:53 +08:00
|
|
|
if (status & BIT(7)) {
|
|
|
|
if (twl4030_is_driving_vbus(twl))
|
|
|
|
status &= ~BIT(7);
|
|
|
|
else
|
|
|
|
twl->vbus_supplied = true;
|
|
|
|
}
|
2011-04-02 05:02:07 +08:00
|
|
|
|
2009-04-01 03:26:10 +08:00
|
|
|
if (status & BIT(2))
|
2012-06-22 20:10:52 +08:00
|
|
|
linkstat = OMAP_MUSB_ID_GROUND;
|
2013-03-24 23:36:53 +08:00
|
|
|
else if (status & BIT(7))
|
2012-06-22 20:10:52 +08:00
|
|
|
linkstat = OMAP_MUSB_VBUS_VALID;
|
2013-03-24 23:36:53 +08:00
|
|
|
else
|
|
|
|
linkstat = OMAP_MUSB_VBUS_OFF;
|
2012-06-22 20:10:52 +08:00
|
|
|
} else {
|
|
|
|
if (twl->linkstat != OMAP_MUSB_UNKNOWN)
|
|
|
|
linkstat = OMAP_MUSB_VBUS_OFF;
|
|
|
|
}
|
2008-12-19 04:25:44 +08:00
|
|
|
|
|
|
|
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...
|
|
|
|
*/
|
|
|
|
|
|
|
|
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:
|
2010-03-31 15:18:05 +08:00
|
|
|
twl4030_usb_clear_bits(twl, ULPI_IFC_CTRL,
|
|
|
|
ULPI_IFC_CTRL_CARKITMODE);
|
2008-12-19 04:25:44 +08:00
|
|
|
twl4030_usb_set_bits(twl, POWER_CTRL, POWER_CTRL_OTG_ENAB);
|
2010-03-31 15:18:05 +08:00
|
|
|
twl4030_usb_clear_bits(twl, ULPI_FUNC_CTRL,
|
|
|
|
ULPI_FUNC_CTRL_XCVRSEL_MASK |
|
|
|
|
ULPI_FUNC_CTRL_OPMODE_MASK);
|
2008-12-19 04:25:44 +08:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-09-06 23:27:09 +08:00
|
|
|
static void __twl4030_phy_power(struct twl4030_usb *twl, int on)
|
2008-12-19 04:25:44 +08:00
|
|
|
{
|
2010-09-06 23:27:09 +08:00
|
|
|
u8 pwr = twl4030_usb_read(twl, PHY_PWR_CTRL);
|
|
|
|
|
|
|
|
if (on)
|
|
|
|
pwr &= ~PHY_PWR_PHYPWD;
|
|
|
|
else
|
|
|
|
pwr |= PHY_PWR_PHYPWD;
|
2008-12-19 04:25:44 +08:00
|
|
|
|
2010-09-06 23:27:09 +08:00
|
|
|
WARN_ON(twl4030_usb_write_verify(twl, PHY_PWR_CTRL, pwr) < 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void twl4030_phy_power(struct twl4030_usb *twl, int on)
|
|
|
|
{
|
2013-04-03 22:02:26 +08:00
|
|
|
int ret;
|
|
|
|
|
2008-12-19 04:25:44 +08:00
|
|
|
if (on) {
|
2013-04-03 22:02:26 +08:00
|
|
|
ret = regulator_enable(twl->usb3v1);
|
|
|
|
if (ret)
|
|
|
|
dev_err(twl->dev, "Failed to enable usb3v1\n");
|
|
|
|
|
|
|
|
ret = regulator_enable(twl->usb1v8);
|
|
|
|
if (ret)
|
|
|
|
dev_err(twl->dev, "Failed to enable usb1v8\n");
|
|
|
|
|
2009-02-20 20:02:31 +08:00
|
|
|
/*
|
|
|
|
* 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.
|
|
|
|
*/
|
2012-11-13 17:43:38 +08:00
|
|
|
twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2);
|
2013-04-03 22:02:26 +08:00
|
|
|
|
|
|
|
ret = regulator_enable(twl->usb1v5);
|
|
|
|
if (ret)
|
|
|
|
dev_err(twl->dev, "Failed to enable usb1v5\n");
|
|
|
|
|
2010-09-06 23:27:09 +08:00
|
|
|
__twl4030_phy_power(twl, 1);
|
2008-12-19 04:25:44 +08:00
|
|
|
twl4030_usb_write(twl, PHY_CLK_CTRL,
|
|
|
|
twl4030_usb_read(twl, PHY_CLK_CTRL) |
|
|
|
|
(PHY_CLK_CTRL_CLOCKGATING_EN |
|
|
|
|
PHY_CLK_CTRL_CLK32K_EN));
|
2010-09-06 23:27:09 +08:00
|
|
|
} else {
|
|
|
|
__twl4030_phy_power(twl, 0);
|
2009-02-20 20:02:31 +08:00
|
|
|
regulator_disable(twl->usb1v5);
|
|
|
|
regulator_disable(twl->usb1v8);
|
|
|
|
regulator_disable(twl->usb3v1);
|
2008-12-19 04:25:44 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-09-27 14:23:31 +08:00
|
|
|
static int twl4030_phy_power_off(struct phy *phy)
|
2008-12-19 04:25:44 +08:00
|
|
|
{
|
2013-09-27 14:23:31 +08:00
|
|
|
struct twl4030_usb *twl = phy_get_drvdata(phy);
|
|
|
|
|
2008-12-19 04:25:44 +08:00
|
|
|
if (twl->asleep)
|
2013-09-27 14:23:31 +08:00
|
|
|
return 0;
|
2008-12-19 04:25:44 +08:00
|
|
|
|
|
|
|
twl4030_phy_power(twl, 0);
|
|
|
|
twl->asleep = 1;
|
2010-09-06 23:27:09 +08:00
|
|
|
dev_dbg(twl->dev, "%s\n", __func__);
|
2013-09-27 14:23:27 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2013-09-27 14:23:31 +08:00
|
|
|
static void __twl4030_phy_power_on(struct twl4030_usb *twl)
|
2008-12-19 04:25:44 +08:00
|
|
|
{
|
|
|
|
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);
|
2010-09-06 23:27:09 +08:00
|
|
|
}
|
|
|
|
|
2013-09-27 14:23:31 +08:00
|
|
|
static int twl4030_phy_power_on(struct phy *phy)
|
2010-09-06 23:27:09 +08:00
|
|
|
{
|
2013-09-27 14:23:31 +08:00
|
|
|
struct twl4030_usb *twl = phy_get_drvdata(phy);
|
|
|
|
|
2010-09-06 23:27:09 +08:00
|
|
|
if (!twl->asleep)
|
2013-09-27 14:23:31 +08:00
|
|
|
return 0;
|
|
|
|
__twl4030_phy_power_on(twl);
|
2008-12-19 04:25:44 +08:00
|
|
|
twl->asleep = 0;
|
2010-09-06 23:27:09 +08:00
|
|
|
dev_dbg(twl->dev, "%s\n", __func__);
|
2013-03-18 02:23:24 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* XXX When VBUS gets driven after musb goes to A mode,
|
|
|
|
* ID_PRES related interrupts no longer arrive, why?
|
|
|
|
* Register itself is updated fine though, so we must poll.
|
|
|
|
*/
|
|
|
|
if (twl->linkstat == OMAP_MUSB_ID_GROUND) {
|
|
|
|
cancel_delayed_work(&twl->id_workaround_work);
|
|
|
|
schedule_delayed_work(&twl->id_workaround_work, HZ);
|
|
|
|
}
|
2013-09-27 14:23:27 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-02-20 20:02:31 +08:00
|
|
|
static int twl4030_usb_ldo_init(struct twl4030_usb *twl)
|
2008-12-19 04:25:44 +08:00
|
|
|
{
|
|
|
|
/* Enable writing to power configuration registers */
|
2012-11-13 17:43:38 +08:00
|
|
|
twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1,
|
|
|
|
TWL4030_PM_MASTER_PROTECT_KEY);
|
2010-08-18 14:19:37 +08:00
|
|
|
|
2012-11-13 17:43:38 +08:00
|
|
|
twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2,
|
|
|
|
TWL4030_PM_MASTER_PROTECT_KEY);
|
2008-12-19 04:25:44 +08:00
|
|
|
|
2010-09-06 23:27:09 +08:00
|
|
|
/* Keep VUSB3V1 LDO in sleep state until VBUS/ID change detected*/
|
2012-11-13 17:43:38 +08:00
|
|
|
/*twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB_DEDICATED2);*/
|
2008-12-19 04:25:44 +08:00
|
|
|
|
|
|
|
/* input to VUSB3V1 LDO is from VBAT, not VBUS */
|
2012-11-13 17:43:38 +08:00
|
|
|
twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0x14, VUSB_DEDICATED1);
|
2008-12-19 04:25:44 +08:00
|
|
|
|
2009-02-20 20:02:31 +08:00
|
|
|
/* Initialize 3.1V regulator */
|
2012-11-13 17:43:38 +08:00
|
|
|
twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB3V1_DEV_GRP);
|
2009-02-20 20:02:31 +08:00
|
|
|
|
2013-03-15 21:28:51 +08:00
|
|
|
twl->usb3v1 = devm_regulator_get(twl->dev, "usb3v1");
|
2009-02-20 20:02:31 +08:00
|
|
|
if (IS_ERR(twl->usb3v1))
|
|
|
|
return -ENODEV;
|
|
|
|
|
2012-11-13 17:43:38 +08:00
|
|
|
twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB3V1_TYPE);
|
2008-12-19 04:25:44 +08:00
|
|
|
|
2009-02-20 20:02:31 +08:00
|
|
|
/* Initialize 1.5V regulator */
|
2012-11-13 17:43:38 +08:00
|
|
|
twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V5_DEV_GRP);
|
2009-02-20 20:02:31 +08:00
|
|
|
|
2013-03-15 21:28:51 +08:00
|
|
|
twl->usb1v5 = devm_regulator_get(twl->dev, "usb1v5");
|
2009-02-20 20:02:31 +08:00
|
|
|
if (IS_ERR(twl->usb1v5))
|
2013-03-15 21:28:51 +08:00
|
|
|
return -ENODEV;
|
2009-02-20 20:02:31 +08:00
|
|
|
|
2012-11-13 17:43:38 +08:00
|
|
|
twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V5_TYPE);
|
2008-12-19 04:25:44 +08:00
|
|
|
|
2009-02-20 20:02:31 +08:00
|
|
|
/* Initialize 1.8V regulator */
|
2012-11-13 17:43:38 +08:00
|
|
|
twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V8_DEV_GRP);
|
2009-02-20 20:02:31 +08:00
|
|
|
|
2013-03-15 21:28:51 +08:00
|
|
|
twl->usb1v8 = devm_regulator_get(twl->dev, "usb1v8");
|
2009-02-20 20:02:31 +08:00
|
|
|
if (IS_ERR(twl->usb1v8))
|
2013-03-15 21:28:51 +08:00
|
|
|
return -ENODEV;
|
2009-02-20 20:02:31 +08:00
|
|
|
|
2012-11-13 17:43:38 +08:00
|
|
|
twl_i2c_write_u8(TWL_MODULE_PM_RECEIVER, 0, VUSB1V8_TYPE);
|
2008-12-19 04:25:44 +08:00
|
|
|
|
|
|
|
/* disable access to power configuration registers */
|
2012-11-13 17:43:38 +08:00
|
|
|
twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0,
|
|
|
|
TWL4030_PM_MASTER_PROTECT_KEY);
|
2009-02-20 20:02:31 +08:00
|
|
|
|
|
|
|
return 0;
|
2008-12-19 04:25:44 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
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",
|
2011-04-02 05:02:07 +08:00
|
|
|
twl->vbus_supplied ? "on" : "off");
|
2008-12-19 04:25:44 +08:00
|
|
|
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;
|
2012-06-22 20:10:52 +08:00
|
|
|
enum omap_musb_vbus_id_status status;
|
2013-03-18 02:23:24 +08:00
|
|
|
bool status_changed = false;
|
2008-12-19 04:25:44 +08:00
|
|
|
|
|
|
|
status = twl4030_usb_linkstat(twl);
|
2013-03-18 02:23:24 +08:00
|
|
|
|
|
|
|
spin_lock_irq(&twl->lock);
|
|
|
|
if (status >= 0 && status != twl->linkstat) {
|
|
|
|
twl->linkstat = status;
|
|
|
|
status_changed = true;
|
|
|
|
}
|
|
|
|
spin_unlock_irq(&twl->lock);
|
|
|
|
|
|
|
|
if (status_changed) {
|
2008-12-19 04:25:44 +08:00
|
|
|
/* 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.
|
|
|
|
*/
|
2013-03-18 02:23:24 +08:00
|
|
|
omap_musb_mailbox(status);
|
2008-12-19 04:25:44 +08:00
|
|
|
}
|
|
|
|
sysfs_notify(&twl->dev->kobj, NULL, "vbus");
|
|
|
|
|
|
|
|
return IRQ_HANDLED;
|
|
|
|
}
|
|
|
|
|
2013-03-18 02:23:24 +08:00
|
|
|
static void twl4030_id_workaround_work(struct work_struct *work)
|
2010-09-06 23:27:09 +08:00
|
|
|
{
|
2013-03-18 02:23:24 +08:00
|
|
|
struct twl4030_usb *twl = container_of(work, struct twl4030_usb,
|
|
|
|
id_workaround_work.work);
|
2012-06-22 20:10:52 +08:00
|
|
|
enum omap_musb_vbus_id_status status;
|
2013-03-18 02:23:24 +08:00
|
|
|
bool status_changed = false;
|
2010-09-06 23:27:09 +08:00
|
|
|
|
|
|
|
status = twl4030_usb_linkstat(twl);
|
|
|
|
|
2013-03-18 02:23:24 +08:00
|
|
|
spin_lock_irq(&twl->lock);
|
|
|
|
if (status >= 0 && status != twl->linkstat) {
|
|
|
|
twl->linkstat = status;
|
|
|
|
status_changed = true;
|
|
|
|
}
|
|
|
|
spin_unlock_irq(&twl->lock);
|
|
|
|
|
|
|
|
if (status_changed) {
|
|
|
|
dev_dbg(twl->dev, "handle missing status change to %d\n",
|
|
|
|
status);
|
|
|
|
omap_musb_mailbox(status);
|
2010-09-06 23:27:09 +08:00
|
|
|
}
|
2013-03-18 02:23:24 +08:00
|
|
|
|
|
|
|
/* don't schedule during sleep - irq works right then */
|
|
|
|
if (status == OMAP_MUSB_ID_GROUND && !twl->asleep) {
|
|
|
|
cancel_delayed_work(&twl->id_workaround_work);
|
|
|
|
schedule_delayed_work(&twl->id_workaround_work, HZ);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-09-27 14:23:31 +08:00
|
|
|
static int twl4030_phy_init(struct phy *phy)
|
2010-09-06 23:27:09 +08:00
|
|
|
{
|
2013-09-27 14:23:31 +08:00
|
|
|
struct twl4030_usb *twl = phy_get_drvdata(phy);
|
2012-06-22 20:10:52 +08:00
|
|
|
enum omap_musb_vbus_id_status status;
|
2010-09-06 23:27:09 +08:00
|
|
|
|
2013-03-18 02:23:21 +08:00
|
|
|
/*
|
|
|
|
* Start in sleep state, we'll get called through set_suspend()
|
|
|
|
* callback when musb is runtime resumed and it's time to start.
|
|
|
|
*/
|
|
|
|
__twl4030_phy_power(twl, 0);
|
|
|
|
twl->asleep = 1;
|
2010-09-06 23:27:09 +08:00
|
|
|
|
2013-03-18 02:23:21 +08:00
|
|
|
status = twl4030_usb_linkstat(twl);
|
2013-03-18 02:23:24 +08:00
|
|
|
twl->linkstat = status;
|
|
|
|
|
2013-09-27 14:23:27 +08:00
|
|
|
if (status == OMAP_MUSB_ID_GROUND || status == OMAP_MUSB_VBUS_VALID) {
|
2012-06-22 20:10:52 +08:00
|
|
|
omap_musb_mailbox(twl->linkstat);
|
2013-09-27 14:23:31 +08:00
|
|
|
twl4030_phy_power_on(phy);
|
2013-09-27 14:23:27 +08:00
|
|
|
}
|
2013-03-18 02:23:21 +08:00
|
|
|
|
2010-09-06 23:27:09 +08:00
|
|
|
sysfs_notify(&twl->dev->kobj, NULL, "vbus");
|
2013-03-15 21:28:52 +08:00
|
|
|
return 0;
|
2010-09-06 23:27:09 +08:00
|
|
|
}
|
|
|
|
|
2012-02-13 19:24:11 +08:00
|
|
|
static int twl4030_set_peripheral(struct usb_otg *otg,
|
|
|
|
struct usb_gadget *gadget)
|
2008-12-19 04:25:44 +08:00
|
|
|
{
|
2012-02-13 19:24:11 +08:00
|
|
|
if (!otg)
|
2008-12-19 04:25:44 +08:00
|
|
|
return -ENODEV;
|
|
|
|
|
2012-02-13 19:24:11 +08:00
|
|
|
otg->gadget = gadget;
|
2008-12-19 04:25:44 +08:00
|
|
|
if (!gadget)
|
2012-02-13 19:24:11 +08:00
|
|
|
otg->phy->state = OTG_STATE_UNDEFINED;
|
2008-12-19 04:25:44 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-02-13 19:24:11 +08:00
|
|
|
static int twl4030_set_host(struct usb_otg *otg, struct usb_bus *host)
|
2008-12-19 04:25:44 +08:00
|
|
|
{
|
2012-02-13 19:24:11 +08:00
|
|
|
if (!otg)
|
2008-12-19 04:25:44 +08:00
|
|
|
return -ENODEV;
|
|
|
|
|
2012-02-13 19:24:11 +08:00
|
|
|
otg->host = host;
|
2008-12-19 04:25:44 +08:00
|
|
|
if (!host)
|
2012-02-13 19:24:11 +08:00
|
|
|
otg->phy->state = OTG_STATE_UNDEFINED;
|
2008-12-19 04:25:44 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2013-09-27 14:23:27 +08:00
|
|
|
static const struct phy_ops ops = {
|
|
|
|
.init = twl4030_phy_init,
|
|
|
|
.power_on = twl4030_phy_power_on,
|
|
|
|
.power_off = twl4030_phy_power_off,
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
};
|
|
|
|
|
2012-11-20 02:21:48 +08:00
|
|
|
static int twl4030_usb_probe(struct platform_device *pdev)
|
2008-12-19 04:25:44 +08:00
|
|
|
{
|
2013-07-30 16:02:13 +08:00
|
|
|
struct twl4030_usb_data *pdata = dev_get_platdata(&pdev->dev);
|
2008-12-19 04:25:44 +08:00
|
|
|
struct twl4030_usb *twl;
|
2013-09-27 14:23:27 +08:00
|
|
|
struct phy *phy;
|
2009-02-20 20:02:31 +08:00
|
|
|
int status, err;
|
2012-02-13 19:24:11 +08:00
|
|
|
struct usb_otg *otg;
|
2012-09-06 22:57:09 +08:00
|
|
|
struct device_node *np = pdev->dev.of_node;
|
2013-09-27 14:23:27 +08:00
|
|
|
struct phy_provider *phy_provider;
|
|
|
|
struct phy_init_data *init_data = NULL;
|
2008-12-19 04:25:44 +08:00
|
|
|
|
2012-06-22 20:10:55 +08:00
|
|
|
twl = devm_kzalloc(&pdev->dev, sizeof *twl, GFP_KERNEL);
|
2008-12-19 04:25:44 +08:00
|
|
|
if (!twl)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2012-09-06 22:57:09 +08:00
|
|
|
if (np)
|
|
|
|
of_property_read_u32(np, "usb_mode",
|
|
|
|
(enum twl4030_usb_mode *)&twl->usb_mode);
|
2013-09-27 14:23:27 +08:00
|
|
|
else if (pdata) {
|
2012-09-06 22:57:09 +08:00
|
|
|
twl->usb_mode = pdata->usb_mode;
|
2013-09-27 14:23:27 +08:00
|
|
|
init_data = pdata->init_data;
|
|
|
|
} else {
|
2012-09-06 22:57:09 +08:00
|
|
|
dev_err(&pdev->dev, "twl4030 initialized without pdata\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2012-06-22 20:10:55 +08:00
|
|
|
otg = devm_kzalloc(&pdev->dev, sizeof *otg, GFP_KERNEL);
|
|
|
|
if (!otg)
|
2012-02-13 19:24:11 +08:00
|
|
|
return -ENOMEM;
|
|
|
|
|
2008-12-19 04:25:44 +08:00
|
|
|
twl->dev = &pdev->dev;
|
|
|
|
twl->irq = platform_get_irq(pdev, 0);
|
2011-04-02 05:02:07 +08:00
|
|
|
twl->vbus_supplied = false;
|
2012-02-13 19:24:11 +08:00
|
|
|
twl->asleep = 1;
|
2012-06-22 20:10:52 +08:00
|
|
|
twl->linkstat = OMAP_MUSB_UNKNOWN;
|
2012-02-13 19:24:11 +08:00
|
|
|
|
|
|
|
twl->phy.dev = twl->dev;
|
|
|
|
twl->phy.label = "twl4030";
|
|
|
|
twl->phy.otg = otg;
|
2013-01-25 10:33:24 +08:00
|
|
|
twl->phy.type = USB_PHY_TYPE_USB2;
|
2012-02-13 19:24:11 +08:00
|
|
|
|
|
|
|
otg->phy = &twl->phy;
|
|
|
|
otg->set_host = twl4030_set_host;
|
|
|
|
otg->set_peripheral = twl4030_set_peripheral;
|
2008-12-19 04:25:44 +08:00
|
|
|
|
2013-09-27 14:23:27 +08:00
|
|
|
phy = devm_phy_create(twl->dev, &ops, init_data);
|
|
|
|
if (IS_ERR(phy)) {
|
|
|
|
dev_dbg(&pdev->dev, "Failed to create PHY\n");
|
|
|
|
return PTR_ERR(phy);
|
|
|
|
}
|
|
|
|
|
|
|
|
phy_set_drvdata(phy, twl);
|
|
|
|
|
2014-02-17 16:59:25 +08:00
|
|
|
phy_provider = devm_of_phy_provider_register(twl->dev,
|
|
|
|
of_phy_simple_xlate);
|
|
|
|
if (IS_ERR(phy_provider))
|
|
|
|
return PTR_ERR(phy_provider);
|
|
|
|
|
2008-12-19 04:25:44 +08:00
|
|
|
/* init spinlock for workqueue */
|
|
|
|
spin_lock_init(&twl->lock);
|
|
|
|
|
2013-03-18 02:23:24 +08:00
|
|
|
INIT_DELAYED_WORK(&twl->id_workaround_work, twl4030_id_workaround_work);
|
|
|
|
|
2009-02-20 20:02:31 +08:00
|
|
|
err = twl4030_usb_ldo_init(twl);
|
|
|
|
if (err) {
|
|
|
|
dev_err(&pdev->dev, "ldo init failed\n");
|
|
|
|
return err;
|
|
|
|
}
|
2013-01-25 10:33:24 +08:00
|
|
|
usb_add_phy_dev(&twl->phy);
|
2008-12-19 04:25:44 +08:00
|
|
|
|
|
|
|
platform_set_drvdata(pdev, twl);
|
|
|
|
if (device_create_file(&pdev->dev, &dev_attr_vbus))
|
|
|
|
dev_warn(&pdev->dev, "could not create sysfs file\n");
|
|
|
|
|
2013-09-19 01:03:33 +08:00
|
|
|
ATOMIC_INIT_NOTIFIER_HEAD(&twl->phy.notifier);
|
|
|
|
|
2008-12-19 04:25:44 +08:00
|
|
|
/* 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;
|
2013-03-15 21:28:51 +08:00
|
|
|
status = devm_request_threaded_irq(twl->dev, twl->irq, NULL,
|
|
|
|
twl4030_usb_irq, IRQF_TRIGGER_FALLING |
|
|
|
|
IRQF_TRIGGER_RISING | IRQF_ONESHOT, "twl4030_usb", twl);
|
2008-12-19 04:25:44 +08:00
|
|
|
if (status < 0) {
|
|
|
|
dev_dbg(&pdev->dev, "can't get IRQ %d, err %d\n",
|
|
|
|
twl->irq, status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
dev_info(&pdev->dev, "Initialized TWL4030 USB module\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2013-02-24 16:55:07 +08:00
|
|
|
static int twl4030_usb_remove(struct platform_device *pdev)
|
2008-12-19 04:25:44 +08:00
|
|
|
{
|
|
|
|
struct twl4030_usb *twl = platform_get_drvdata(pdev);
|
|
|
|
int val;
|
|
|
|
|
2013-03-18 02:23:24 +08:00
|
|
|
cancel_delayed_work(&twl->id_workaround_work);
|
2008-12-19 04:25:44 +08:00
|
|
|
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);
|
|
|
|
|
2010-11-30 23:58:25 +08:00
|
|
|
if (!twl->asleep)
|
|
|
|
twl4030_phy_power(twl, 0);
|
2008-12-19 04:25:44 +08:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-09-06 22:57:09 +08:00
|
|
|
#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
|
|
|
|
|
2008-12-19 04:25:44 +08:00
|
|
|
static struct platform_driver twl4030_usb_driver = {
|
|
|
|
.probe = twl4030_usb_probe,
|
2013-02-24 16:55:07 +08:00
|
|
|
.remove = twl4030_usb_remove,
|
2008-12-19 04:25:44 +08:00
|
|
|
.driver = {
|
|
|
|
.name = "twl4030_usb",
|
|
|
|
.owner = THIS_MODULE,
|
2012-09-06 22:57:09 +08:00
|
|
|
.of_match_table = of_match_ptr(twl4030_usb_id_table),
|
2008-12-19 04:25:44 +08:00
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
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");
|