+++ /dev/null
-/*
- * twl4030_core.c - driver for TWL4030/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/twl4030.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 "twl4030"
-
-#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 TWL4030_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
-
-/* 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) */
-
-
-/* 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 */
-
-/*----------------------------------------------------------------------*/
-
-/* is driver active, bound to a chip? */
-static bool inuse;
-
-/* Structure for each TWL4030 Slave */
-struct twl4030_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 twl4030_client twl4030_modules[TWL4030_NUM_SLAVES];
-
-
-/* mapping the module id to slave id and base address */
-struct twl4030mapping {
- unsigned char sid; /* Slave ID */
- unsigned char base; /* base address */
-};
-
-static struct twl4030mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
- /*
- * NOTE: don't change this table without updating the
- * <linux/i2c/twl4030.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 },
-};
-
-/*----------------------------------------------------------------------*/
-
-/* Exported Functions */
-
-/**
- * twl4030_i2c_write - Writes a n bit register in TWL4030
- * @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 twl4030_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
-{
- int ret;
- int sid;
- struct twl4030_client *twl;
- struct i2c_msg *msg;
-
- if (unlikely(mod_no > TWL4030_MODULE_LAST)) {
- pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
- return -EPERM;
- }
- sid = twl4030_map[mod_no].sid;
- twl = &twl4030_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 = twl4030_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(twl4030_i2c_write);
-
-/**
- * twl4030_i2c_read - Reads a n bit register in TWL4030
- * @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 twl4030_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
-{
- int ret;
- u8 val;
- int sid;
- struct twl4030_client *twl;
- struct i2c_msg *msg;
-
- if (unlikely(mod_no > TWL4030_MODULE_LAST)) {
- pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
- return -EPERM;
- }
- sid = twl4030_map[mod_no].sid;
- twl = &twl4030_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 = twl4030_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(twl4030_i2c_read);
-
-/**
- * twl4030_i2c_write_u8 - Writes a 8 bit register in TWL4030
- * @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 twl4030_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 twl4030_i2c_write(mod_no, temp_buffer, reg, 1);
-}
-EXPORT_SYMBOL(twl4030_i2c_write_u8);
-
-/**
- * twl4030_i2c_read_u8 - Reads a 8 bit register from TWL4030
- * @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 twl4030_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
-{
- return twl4030_i2c_read(mod_no, value, reg, 1);
-}
-EXPORT_SYMBOL(twl4030_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 twl4030_client *twl = &twl4030_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)
-{
- /* 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 */
- return add_numbered_child(3, "twl4030_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;
-
- 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 + 8 + 1, pdata->irq_base + 2);
- if (IS_ERR(child))
- return PTR_ERR(child);
- }
-
- if (twl_has_gpio() && pdata->gpio) {
- child = add_child(1, "twl4030_gpio",
- pdata->gpio, sizeof(*pdata->gpio),
- false, pdata->irq_base + 0, 0);
- if (IS_ERR(child))
- return PTR_ERR(child);
- }
-
- if (twl_has_keypad() && pdata->keypad) {
- child = add_child(2, "twl4030_keypad",
- pdata->keypad, sizeof(*pdata->keypad),
- true, pdata->irq_base + 1, 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 + 3, 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".
- */
- child = add_child(3, "twl4030_rtc",
- NULL, 0,
- true, pdata->irq_base + 8 + 3, 0);
- if (IS_ERR(child))
- return PTR_ERR(child);
- }
-
- if (twl_has_usb() && pdata->usb) {
-
- 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 + 8 + 2, pdata->irq_base + 4);
-
- 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);
- }
-
- if (twl_has_regulator()) {
- 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)) {
- 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);
- }
-
- 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 = twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, KEY_LOCK,
- R_PROTECT_KEY);
- return e;
-}
-
-static inline int __init unprotect_pm_master(void)
-{
- int e = 0;
-
- e |= twl4030_i2c_write_u8(TWL4030_MODULE_PM_MASTER, KEY_UNLOCK1,
- R_PROTECT_KEY);
- e |= twl4030_i2c_write_u8(TWL4030_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 twl4030 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 twl4030 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 |= twl4030_i2c_write_u8(TWL4030_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 twl_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
-int twl_exit_irq(void);
-int twl_init_chip_irq(const char *chip);
-
-static int twl4030_remove(struct i2c_client *client)
-{
- unsigned i;
- int status;
-
- status = twl_exit_irq();
- if (status < 0)
- return status;
-
- for (i = 0; i < TWL4030_NUM_SLAVES; i++) {
- struct twl4030_client *twl = &twl4030_modules[i];
-
- if (twl->client && twl->client != client)
- i2c_unregister_device(twl->client);
- twl4030_modules[i].client = NULL;
- }
- inuse = false;
- return 0;
-}
-
-/* NOTE: this driver only handles a single twl4030/tps659x0 chip */
-static int __init
-twl4030_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 < TWL4030_NUM_SLAVES; i++) {
- struct twl4030_client *twl = &twl4030_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;
-
- /* 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) {
- twl_init_chip_irq(id->name);
- status = twl_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)
- twl4030_remove(client);
- return status;
-}
-
-static const struct i2c_device_id twl4030_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 */
- { /* end of list */ },
-};
-MODULE_DEVICE_TABLE(i2c, twl4030_ids);
-
-/* One Client Driver , 4 Clients */
-static struct i2c_driver twl4030_driver = {
- .driver.name = DRIVER_NAME,
- .id_table = twl4030_ids,
- .probe = twl4030_probe,
- .remove = twl4030_remove,
-};
-
-static int __init twl4030_init(void)
-{
- return i2c_add_driver(&twl4030_driver);
-}
-subsys_initcall(twl4030_init);
-
-static void __exit twl4030_exit(void)
-{
- i2c_del_driver(&twl4030_driver);
-}
-module_exit(twl4030_exit);
-
-MODULE_AUTHOR("Texas Instruments, Inc.");
-MODULE_DESCRIPTION("I2C Core interface for TWL4030");
-MODULE_LICENSE("GPL");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff