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linux/drivers/mfd/twl-core.c
Rajendra Nayak 9da6653928 mfd: Add twl6030 regulator subdevices 
This patch adds initial support for creating twl6030 PMIC
specific voltage regulators in the twl mfd driver.

Board specific regulator configurations will have to be passed from
respective board files.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Balaji T K <balajitk@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-12-14 00:26:26 +01:00

1077 lines
28 KiB
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Raw Blame History

/*
* twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM
* and audio CODEC devices
*
* Copyright (C) 2005-2006 Texas Instruments, Inc.
*
* Modifications to defer interrupt handling to a kernel thread:
* Copyright (C) 2006 MontaVista Software, Inc.
*
* Based on tlv320aic23.c:
* Copyright (c) by Kai Svahn <kai.svahn@nokia.com>
*
* Code cleanup and modifications to IRQ handler.
* by syed khasim <x0khasim@ti.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/regulator/machine.h>
#include <linux/i2c.h>
#include <linux/i2c/twl.h>
#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
#include <plat/cpu.h>
#endif
/*
* The TWL4030 "Triton 2" is one of a family of a multi-function "Power
* Management and System Companion Device" chips originally designed for
* use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C,
* often at around 3 Mbit/sec, including for interrupt handling.
*
* This driver core provides genirq support for the interrupts emitted,
* by the various modules, and exports register access primitives.
*
* FIXME this driver currently requires use of the first interrupt line
* (and associated registers).
*/
#define DRIVER_NAME "twl"
#if defined(CONFIG_TWL4030_BCI_BATTERY) || \
defined(CONFIG_TWL4030_BCI_BATTERY_MODULE)
#define twl_has_bci() true
#else
#define twl_has_bci() false
#endif
#if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
#define twl_has_keypad() true
#else
#define twl_has_keypad() false
#endif
#if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
#define twl_has_gpio() true
#else
#define twl_has_gpio() false
#endif
#if defined(CONFIG_REGULATOR_TWL4030) \
|| defined(CONFIG_REGULATOR_TWL4030_MODULE)
#define twl_has_regulator() true
#else
#define twl_has_regulator() false
#endif
#if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
#define twl_has_madc() true
#else
#define twl_has_madc() false
#endif
#ifdef CONFIG_TWL4030_POWER
#define twl_has_power() true
#else
#define twl_has_power() false
#endif
#if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
#define twl_has_rtc() true
#else
#define twl_has_rtc() false
#endif
#if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE)
#define twl_has_usb() true
#else
#define twl_has_usb() false
#endif
#if defined(CONFIG_TWL4030_WATCHDOG) || \
defined(CONFIG_TWL4030_WATCHDOG_MODULE)
#define twl_has_watchdog() true
#else
#define twl_has_watchdog() false
#endif
#if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE)
#define twl_has_codec() true
#else
#define twl_has_codec() false
#endif
/* Triton Core internal information (BEGIN) */
/* Last - for index max*/
#define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG
#define TWL_NUM_SLAVES 4
#if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
|| defined(CONFIG_INPUT_TWL4030_PWBUTTON_MODULE)
#define twl_has_pwrbutton() true
#else
#define twl_has_pwrbutton() false
#endif
#define SUB_CHIP_ID0 0
#define SUB_CHIP_ID1 1
#define SUB_CHIP_ID2 2
#define SUB_CHIP_ID3 3
#define TWL_MODULE_LAST TWL4030_MODULE_LAST
/* Base Address defns for twl4030_map[] */
/* subchip/slave 0 - USB ID */
#define TWL4030_BASEADD_USB 0x0000
/* subchip/slave 1 - AUD ID */
#define TWL4030_BASEADD_AUDIO_VOICE 0x0000
#define TWL4030_BASEADD_GPIO 0x0098
#define TWL4030_BASEADD_INTBR 0x0085
#define TWL4030_BASEADD_PIH 0x0080
#define TWL4030_BASEADD_TEST 0x004C
/* subchip/slave 2 - AUX ID */
#define TWL4030_BASEADD_INTERRUPTS 0x00B9
#define TWL4030_BASEADD_LED 0x00EE
#define TWL4030_BASEADD_MADC 0x0000
#define TWL4030_BASEADD_MAIN_CHARGE 0x0074
#define TWL4030_BASEADD_PRECHARGE 0x00AA
#define TWL4030_BASEADD_PWM0 0x00F8
#define TWL4030_BASEADD_PWM1 0x00FB
#define TWL4030_BASEADD_PWMA 0x00EF
#define TWL4030_BASEADD_PWMB 0x00F1
#define TWL4030_BASEADD_KEYPAD 0x00D2
#define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */
#define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's
one */
/* subchip/slave 3 - POWER ID */
#define TWL4030_BASEADD_BACKUP 0x0014
#define TWL4030_BASEADD_INT 0x002E
#define TWL4030_BASEADD_PM_MASTER 0x0036
#define TWL4030_BASEADD_PM_RECEIVER 0x005B
#define TWL4030_BASEADD_RTC 0x001C
#define TWL4030_BASEADD_SECURED_REG 0x0000
/* Triton Core internal information (END) */
/* subchip/slave 0 0x48 - POWER */
#define TWL6030_BASEADD_RTC 0x0000
#define TWL6030_BASEADD_MEM 0x0017
#define TWL6030_BASEADD_PM_MASTER 0x001F
#define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */
#define TWL6030_BASEADD_PM_MISC 0x00E2
#define TWL6030_BASEADD_PM_PUPD 0x00F0
/* subchip/slave 1 0x49 - FEATURE */
#define TWL6030_BASEADD_USB 0x0000
#define TWL6030_BASEADD_GPADC_CTRL 0x002E
#define TWL6030_BASEADD_AUX 0x0090
#define TWL6030_BASEADD_PWM 0x00BA
#define TWL6030_BASEADD_GASGAUGE 0x00C0
#define TWL6030_BASEADD_PIH 0x00D0
#define TWL6030_BASEADD_CHARGER 0x00E0
/* subchip/slave 2 0x4A - DFT */
#define TWL6030_BASEADD_DIEID 0x00C0
/* subchip/slave 3 0x4B - AUDIO */
#define TWL6030_BASEADD_AUDIO 0x0000
#define TWL6030_BASEADD_RSV 0x0000
/* Few power values */
#define R_CFG_BOOT 0x05
#define R_PROTECT_KEY 0x0E
/* access control values for R_PROTECT_KEY */
#define KEY_UNLOCK1 0xce
#define KEY_UNLOCK2 0xec
#define KEY_LOCK 0x00
/* some fields in R_CFG_BOOT */
#define HFCLK_FREQ_19p2_MHZ (1 << 0)
#define HFCLK_FREQ_26_MHZ (2 << 0)
#define HFCLK_FREQ_38p4_MHZ (3 << 0)
#define HIGH_PERF_SQ (1 << 3)
#define CK32K_LOWPWR_EN (1 << 7)
/* chip-specific feature flags, for i2c_device_id.driver_data */
#define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */
#define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */
#define TWL5031 BIT(2) /* twl5031 has different registers */
#define TWL6030_CLASS BIT(3) /* TWL6030 class */
/*----------------------------------------------------------------------*/
/* is driver active, bound to a chip? */
static bool inuse;
static unsigned int twl_id;
unsigned int twl_rev(void)
{
return twl_id;
}
EXPORT_SYMBOL(twl_rev);
/* Structure for each TWL4030/TWL6030 Slave */
struct twl_client {
struct i2c_client *client;
u8 address;
/* max numb of i2c_msg required is for read =2 */
struct i2c_msg xfer_msg[2];
/* To lock access to xfer_msg */
struct mutex xfer_lock;
};
static struct twl_client twl_modules[TWL_NUM_SLAVES];
/* mapping the module id to slave id and base address */
struct twl_mapping {
unsigned char sid; /* Slave ID */
unsigned char base; /* base address */
};
struct twl_mapping *twl_map;
static struct twl_mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
/*
* NOTE: don't change this table without updating the
* <linux/i2c/twl.h> defines for TWL4030_MODULE_*
* so they continue to match the order in this table.
*/
{ 0, TWL4030_BASEADD_USB },
{ 1, TWL4030_BASEADD_AUDIO_VOICE },
{ 1, TWL4030_BASEADD_GPIO },
{ 1, TWL4030_BASEADD_INTBR },
{ 1, TWL4030_BASEADD_PIH },
{ 1, TWL4030_BASEADD_TEST },
{ 2, TWL4030_BASEADD_KEYPAD },
{ 2, TWL4030_BASEADD_MADC },
{ 2, TWL4030_BASEADD_INTERRUPTS },
{ 2, TWL4030_BASEADD_LED },
{ 2, TWL4030_BASEADD_MAIN_CHARGE },
{ 2, TWL4030_BASEADD_PRECHARGE },
{ 2, TWL4030_BASEADD_PWM0 },
{ 2, TWL4030_BASEADD_PWM1 },
{ 2, TWL4030_BASEADD_PWMA },
{ 2, TWL4030_BASEADD_PWMB },
{ 2, TWL5031_BASEADD_ACCESSORY },
{ 2, TWL5031_BASEADD_INTERRUPTS },
{ 3, TWL4030_BASEADD_BACKUP },
{ 3, TWL4030_BASEADD_INT },
{ 3, TWL4030_BASEADD_PM_MASTER },
{ 3, TWL4030_BASEADD_PM_RECEIVER },
{ 3, TWL4030_BASEADD_RTC },
{ 3, TWL4030_BASEADD_SECURED_REG },
};
static struct twl_mapping twl6030_map[] = {
/*
* NOTE: don't change this table without updating the
* <linux/i2c/twl.h> defines for TWL4030_MODULE_*
* so they continue to match the order in this table.
*/
{ SUB_CHIP_ID1, TWL6030_BASEADD_USB },
{ SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
{ SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
{ SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
{ SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
{ SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
{ SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
{ SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
{ SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
{ SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
{ SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
{ SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
};
/*----------------------------------------------------------------------*/
/* Exported Functions */
/**
* twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
* @mod_no: module number
* @value: an array of num_bytes+1 containing data to write
* @reg: register address (just offset will do)
* @num_bytes: number of bytes to transfer
*
* IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
* valid data starts at Offset 1.
*
* Returns the result of operation - 0 is success
*/
int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
{
int ret;
int sid;
struct twl_client *twl;
struct i2c_msg *msg;
if (unlikely(mod_no > TWL_MODULE_LAST)) {
pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
return -EPERM;
}
sid = twl_map[mod_no].sid;
twl = &twl_modules[sid];
if (unlikely(!inuse)) {
pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
return -EPERM;
}
mutex_lock(&twl->xfer_lock);
/*
* [MSG1]: fill the register address data
* fill the data Tx buffer
*/
msg = &twl->xfer_msg[0];
msg->addr = twl->address;
msg->len = num_bytes + 1;
msg->flags = 0;
msg->buf = value;
/* over write the first byte of buffer with the register address */
*value = twl_map[mod_no].base + reg;
ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
mutex_unlock(&twl->xfer_lock);
/* i2c_transfer returns number of messages transferred */
if (ret != 1) {
pr_err("%s: i2c_write failed to transfer all messages\n",
DRIVER_NAME);
if (ret < 0)
return ret;
else
return -EIO;
} else {
return 0;
}
}
EXPORT_SYMBOL(twl_i2c_write);
/**
* twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
* @mod_no: module number
* @value: an array of num_bytes containing data to be read
* @reg: register address (just offset will do)
* @num_bytes: number of bytes to transfer
*
* Returns result of operation - num_bytes is success else failure.
*/
int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
{
int ret;
u8 val;
int sid;
struct twl_client *twl;
struct i2c_msg *msg;
if (unlikely(mod_no > TWL_MODULE_LAST)) {
pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
return -EPERM;
}
sid = twl_map[mod_no].sid;
twl = &twl_modules[sid];
if (unlikely(!inuse)) {
pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
return -EPERM;
}
mutex_lock(&twl->xfer_lock);
/* [MSG1] fill the register address data */
msg = &twl->xfer_msg[0];
msg->addr = twl->address;
msg->len = 1;
msg->flags = 0; /* Read the register value */
val = twl_map[mod_no].base + reg;
msg->buf = &val;
/* [MSG2] fill the data rx buffer */
msg = &twl->xfer_msg[1];
msg->addr = twl->address;
msg->flags = I2C_M_RD; /* Read the register value */
msg->len = num_bytes; /* only n bytes */
msg->buf = value;
ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
mutex_unlock(&twl->xfer_lock);
/* i2c_transfer returns number of messages transferred */
if (ret != 2) {
pr_err("%s: i2c_read failed to transfer all messages\n",
DRIVER_NAME);
if (ret < 0)
return ret;
else
return -EIO;
} else {
return 0;
}
}
EXPORT_SYMBOL(twl_i2c_read);
/**
* twl_i2c_write_u8 - Writes a 8 bit register in TWL4030/TWL5030/TWL60X0
* @mod_no: module number
* @value: the value to be written 8 bit
* @reg: register address (just offset will do)
*
* Returns result of operation - 0 is success
*/
int twl_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
{
/* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
u8 temp_buffer[2] = { 0 };
/* offset 1 contains the data */
temp_buffer[1] = value;
return twl_i2c_write(mod_no, temp_buffer, reg, 1);
}
EXPORT_SYMBOL(twl_i2c_write_u8);
/**
* twl_i2c_read_u8 - Reads a 8 bit register from TWL4030/TWL5030/TWL60X0
* @mod_no: module number
* @value: the value read 8 bit
* @reg: register address (just offset will do)
*
* Returns result of operation - 0 is success
*/
int twl_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
{
return twl_i2c_read(mod_no, value, reg, 1);
}
EXPORT_SYMBOL(twl_i2c_read_u8);
/*----------------------------------------------------------------------*/
static struct device *
add_numbered_child(unsigned chip, const char *name, int num,
void *pdata, unsigned pdata_len,
bool can_wakeup, int irq0, int irq1)
{
struct platform_device *pdev;
struct twl_client *twl = &twl_modules[chip];
int status;
pdev = platform_device_alloc(name, num);
if (!pdev) {
dev_dbg(&twl->client->dev, "can't alloc dev\n");
status = -ENOMEM;
goto err;
}
device_init_wakeup(&pdev->dev, can_wakeup);
pdev->dev.parent = &twl->client->dev;
if (pdata) {
status = platform_device_add_data(pdev, pdata, pdata_len);
if (status < 0) {
dev_dbg(&pdev->dev, "can't add platform_data\n");
goto err;
}
}
if (irq0) {
struct resource r[2] = {
{ .start = irq0, .flags = IORESOURCE_IRQ, },
{ .start = irq1, .flags = IORESOURCE_IRQ, },
};
status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
if (status < 0) {
dev_dbg(&pdev->dev, "can't add irqs\n");
goto err;
}
}
status = platform_device_add(pdev);
err:
if (status < 0) {
platform_device_put(pdev);
dev_err(&twl->client->dev, "can't add %s dev\n", name);
return ERR_PTR(status);
}
return &pdev->dev;
}
static inline struct device *add_child(unsigned chip, const char *name,
void *pdata, unsigned pdata_len,
bool can_wakeup, int irq0, int irq1)
{
return add_numbered_child(chip, name, -1, pdata, pdata_len,
can_wakeup, irq0, irq1);
}
static struct device *
add_regulator_linked(int num, struct regulator_init_data *pdata,
struct regulator_consumer_supply *consumers,
unsigned num_consumers)
{
unsigned sub_chip_id;
/* regulator framework demands init_data ... */
if (!pdata)
return NULL;
if (consumers) {
pdata->consumer_supplies = consumers;
pdata->num_consumer_supplies = num_consumers;
}
/* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
sub_chip_id = twl_map[TWL_MODULE_PM_MASTER].sid;
return add_numbered_child(sub_chip_id, "twl_reg", num,
pdata, sizeof(*pdata), false, 0, 0);
}
static struct device *
add_regulator(int num, struct regulator_init_data *pdata)
{
return add_regulator_linked(num, pdata, NULL, 0);
}
/*
* NOTE: We know the first 8 IRQs after pdata->base_irq are
* for the PIH, and the next are for the PWR_INT SIH, since
* that's how twl_init_irq() sets things up.
*/
static int
add_children(struct twl4030_platform_data *pdata, unsigned long features)
{
struct device *child;
unsigned sub_chip_id;
if (twl_has_bci() && pdata->bci &&
!(features & (TPS_SUBSET | TWL5031))) {
child = add_child(3, "twl4030_bci",
pdata->bci, sizeof(*pdata->bci),
false,
/* irq0 = CHG_PRES, irq1 = BCI */
pdata->irq_base + BCI_PRES_INTR_OFFSET,
pdata->irq_base + BCI_INTR_OFFSET);
if (IS_ERR(child))
return PTR_ERR(child);
}
if (twl_has_gpio() && pdata->gpio) {
child = add_child(SUB_CHIP_ID1, "twl4030_gpio",
pdata->gpio, sizeof(*pdata->gpio),
false, pdata->irq_base + GPIO_INTR_OFFSET, 0);
if (IS_ERR(child))
return PTR_ERR(child);
}
if (twl_has_keypad() && pdata->keypad) {
child = add_child(SUB_CHIP_ID2, "twl4030_keypad",
pdata->keypad, sizeof(*pdata->keypad),
true, pdata->irq_base + KEYPAD_INTR_OFFSET, 0);
if (IS_ERR(child))
return PTR_ERR(child);
}
if (twl_has_madc() && pdata->madc) {
child = add_child(2, "twl4030_madc",
pdata->madc, sizeof(*pdata->madc),
true, pdata->irq_base + MADC_INTR_OFFSET, 0);
if (IS_ERR(child))
return PTR_ERR(child);
}
if (twl_has_rtc()) {
/*
* REVISIT platform_data here currently might expose the
* "msecure" line ... but for now we just expect board
* setup to tell the chip "it's always ok to SET_TIME".
* Eventually, Linux might become more aware of such
* HW security concerns, and "least privilege".
*/
sub_chip_id = twl_map[TWL_MODULE_RTC].sid;
child = add_child(sub_chip_id, "twl_rtc",
NULL, 0,
true, pdata->irq_base + RTC_INTR_OFFSET, 0);
if (IS_ERR(child))
return PTR_ERR(child);
}
if (twl_has_usb() && pdata->usb && twl_class_is_4030()) {
static struct regulator_consumer_supply usb1v5 = {
.supply = "usb1v5",
};
static struct regulator_consumer_supply usb1v8 = {
.supply = "usb1v8",
};
static struct regulator_consumer_supply usb3v1 = {
.supply = "usb3v1",
};
/* First add the regulators so that they can be used by transceiver */
if (twl_has_regulator()) {
/* this is a template that gets copied */
struct regulator_init_data usb_fixed = {
.constraints.valid_modes_mask =
REGULATOR_MODE_NORMAL
| REGULATOR_MODE_STANDBY,
.constraints.valid_ops_mask =
REGULATOR_CHANGE_MODE
| REGULATOR_CHANGE_STATUS,
};
child = add_regulator_linked(TWL4030_REG_VUSB1V5,
&usb_fixed, &usb1v5, 1);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator_linked(TWL4030_REG_VUSB1V8,
&usb_fixed, &usb1v8, 1);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator_linked(TWL4030_REG_VUSB3V1,
&usb_fixed, &usb3v1, 1);
if (IS_ERR(child))
return PTR_ERR(child);
}
child = add_child(0, "twl4030_usb",
pdata->usb, sizeof(*pdata->usb),
true,
/* irq0 = USB_PRES, irq1 = USB */
pdata->irq_base + USB_PRES_INTR_OFFSET,
pdata->irq_base + USB_INTR_OFFSET);
if (IS_ERR(child))
return PTR_ERR(child);
/* we need to connect regulators to this transceiver */
if (twl_has_regulator() && child) {
usb1v5.dev = child;
usb1v8.dev = child;
usb3v1.dev = child;
}
}
if (twl_has_watchdog()) {
child = add_child(0, "twl4030_wdt", NULL, 0, false, 0, 0);
if (IS_ERR(child))
return PTR_ERR(child);
}
if (twl_has_pwrbutton()) {
child = add_child(1, "twl4030_pwrbutton",
NULL, 0, true, pdata->irq_base + 8 + 0, 0);
if (IS_ERR(child))
return PTR_ERR(child);
}
if (twl_has_codec() && pdata->codec) {
child = add_child(1, "twl4030_codec",
pdata->codec, sizeof(*pdata->codec),
false, 0, 0);
if (IS_ERR(child))
return PTR_ERR(child);
}
/* twl4030 regulators */
if (twl_has_regulator() && twl_class_is_4030()) {
child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VIO, pdata->vio);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VDAC, pdata->vdac);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator((features & TWL4030_VAUX2)
? TWL4030_REG_VAUX2_4030
: TWL4030_REG_VAUX2,
pdata->vaux2);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig);
if (IS_ERR(child))
return PTR_ERR(child);
}
/* maybe add LDOs that are omitted on cost-reduced parts */
if (twl_has_regulator() && !(features & TPS_SUBSET)
&& twl_class_is_4030()) {
child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VSIM, pdata->vsim);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4);
if (IS_ERR(child))
return PTR_ERR(child);
}
/* twl6030 regulators */
if (twl_has_regulator() && twl_class_is_6030()) {
child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL6030_REG_VPP, pdata->vpp);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL6030_REG_VANA, pdata->vana);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL6030_REG_VDAC, pdata->vdac);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL6030_REG_VUSB, pdata->vusb);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2);
if (IS_ERR(child))
return PTR_ERR(child);
child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3);
if (IS_ERR(child))
return PTR_ERR(child);
}
return 0;
}
/*----------------------------------------------------------------------*/
/*
* These three functions initialize the on-chip clock framework,
* letting it generate the right frequencies for USB, MADC, and
* other purposes.
*/
static inline int __init protect_pm_master(void)
{
int e = 0;
e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_LOCK,
R_PROTECT_KEY);
return e;
}
static inline int __init unprotect_pm_master(void)
{
int e = 0;
e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK1,
R_PROTECT_KEY);
e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, KEY_UNLOCK2,
R_PROTECT_KEY);
return e;
}
static void clocks_init(struct device *dev,
struct twl4030_clock_init_data *clock)
{
int e = 0;
struct clk *osc;
u32 rate;
u8 ctrl = HFCLK_FREQ_26_MHZ;
#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
if (cpu_is_omap2430())
osc = clk_get(dev, "osc_ck");
else
osc = clk_get(dev, "osc_sys_ck");
if (IS_ERR(osc)) {
printk(KERN_WARNING "Skipping twl internal clock init and "
"using bootloader value (unknown osc rate)\n");
return;
}
rate = clk_get_rate(osc);
clk_put(osc);
#else
/* REVISIT for non-OMAP systems, pass the clock rate from
* board init code, using platform_data.
*/
osc = ERR_PTR(-EIO);
printk(KERN_WARNING "Skipping twl internal clock init and "
"using bootloader value (unknown osc rate)\n");
return;
#endif
switch (rate) {
case 19200000:
ctrl = HFCLK_FREQ_19p2_MHZ;
break;
case 26000000:
ctrl = HFCLK_FREQ_26_MHZ;
break;
case 38400000:
ctrl = HFCLK_FREQ_38p4_MHZ;
break;
}
ctrl |= HIGH_PERF_SQ;
if (clock && clock->ck32k_lowpwr_enable)
ctrl |= CK32K_LOWPWR_EN;
e |= unprotect_pm_master();
/* effect->MADC+USB ck en */
e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT);
e |= protect_pm_master();
if (e < 0)
pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e);
}
/*----------------------------------------------------------------------*/
int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
int twl4030_exit_irq(void);
int twl4030_init_chip_irq(const char *chip);
int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
int twl6030_exit_irq(void);
static int twl_remove(struct i2c_client *client)
{
unsigned i;
int status;
if (twl_class_is_4030())
status = twl4030_exit_irq();
else
status = twl6030_exit_irq();
if (status < 0)
return status;
for (i = 0; i < TWL_NUM_SLAVES; i++) {
struct twl_client *twl = &twl_modules[i];
if (twl->client && twl->client != client)
i2c_unregister_device(twl->client);
twl_modules[i].client = NULL;
}
inuse = false;
return 0;
}
/* NOTE: this driver only handles a single twl4030/tps659x0 chip */
static int __init
twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
int status;
unsigned i;
struct twl4030_platform_data *pdata = client->dev.platform_data;
if (!pdata) {
dev_dbg(&client->dev, "no platform data?\n");
return -EINVAL;
}
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) {
dev_dbg(&client->dev, "can't talk I2C?\n");
return -EIO;
}
if (inuse) {
dev_dbg(&client->dev, "driver is already in use\n");
return -EBUSY;
}
for (i = 0; i < TWL_NUM_SLAVES; i++) {
struct twl_client *twl = &twl_modules[i];
twl->address = client->addr + i;
if (i == 0)
twl->client = client;
else {
twl->client = i2c_new_dummy(client->adapter,
twl->address);
if (!twl->client) {
dev_err(&client->dev,
"can't attach client %d\n", i);
status = -ENOMEM;
goto fail;
}
}
mutex_init(&twl->xfer_lock);
}
inuse = true;
if ((id->driver_data) & TWL6030_CLASS) {
twl_id = TWL6030_CLASS_ID;
twl_map = &twl6030_map[0];
} else {
twl_id = TWL4030_CLASS_ID;
twl_map = &twl4030_map[0];
}
/* setup clock framework */
clocks_init(&client->dev, pdata->clock);
/* load power event scripts */
if (twl_has_power() && pdata->power)
twl4030_power_init(pdata->power);
/* Maybe init the T2 Interrupt subsystem */
if (client->irq
&& pdata->irq_base
&& pdata->irq_end > pdata->irq_base) {
if (twl_class_is_4030()) {
twl4030_init_chip_irq(id->name);
status = twl4030_init_irq(client->irq, pdata->irq_base,
pdata->irq_end);
} else {
status = twl6030_init_irq(client->irq, pdata->irq_base,
pdata->irq_end);
}
if (status < 0)
goto fail;
}
status = add_children(pdata, id->driver_data);
fail:
if (status < 0)
twl_remove(client);
return status;
}
static const struct i2c_device_id twl_ids[] = {
{ "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */
{ "twl5030", 0 }, /* T2 updated */
{ "twl5031", TWL5031 }, /* TWL5030 updated */
{ "tps65950", 0 }, /* catalog version of twl5030 */
{ "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */
{ "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */
{ "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */
{ /* end of list */ },
};
MODULE_DEVICE_TABLE(i2c, twl_ids);
/* One Client Driver , 4 Clients */
static struct i2c_driver twl_driver = {
.driver.name = DRIVER_NAME,
.id_table = twl_ids,
.probe = twl_probe,
.remove = twl_remove,
};
static int __init twl_init(void)
{
return i2c_add_driver(&twl_driver);
}
subsys_initcall(twl_init);
static void __exit twl_exit(void)
{
i2c_del_driver(&twl_driver);
}
module_exit(twl_exit);
MODULE_AUTHOR("Texas Instruments, Inc.");
MODULE_DESCRIPTION("I2C Core interface for TWL");
MODULE_LICENSE("GPL");
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