path: root/drivers/mfd/twl-core.c

/*
 * 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_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) ||\
	defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_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) ||\
	defined(CONFIG_TWL6040_CORE) || defined(CONFIG_TWL6040_CORE_MODULE)
#define twl_has_codec()	true
#else
#define twl_has_codec()	false
#endif

#if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_MODULE)
#define twl_has_bci()	true
#else
#define twl_has_bci()	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_PWRBUTTON_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
#define TWL6025_BASEADD_CHARGER		0x00DA

/* 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
#define TWL6030_BASEADD_ZERO		0x0000

/* Few power values */
#define R_CFG_BOOT			0x05

/* 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_d