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-rw-r--r--drivers/mfd/twl-core.c1076
1 files changed, 1076 insertions, 0 deletions
diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
new file mode 100644
index 00000000000..2a760653419
--- /dev/null
+++ b/drivers/mfd/twl-core.c
@@ -0,0 +1,1076 @@
+/*
+ * 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");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-24 06:52:56 +0000