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mfd: TWL4030 core driver

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This patch adds the core of the TWL4030 driver, which supports
chips including the TPS65950.  These chips are multi-function; see

  http://focus.ti.com/docs/prod/folders/print/tps65950.html

Public specs are in the works.  For now, the block diagram on
the second page of the datasheet is fairly informative.

There are some known issues with this core code.  Most notably,
the IRQ dispatching needs simplification (to use more of genirq),
generalization (integrating support for secondary IRQ dispatch
as well as primary, and removing the build dependency on OMAP),
and then probably updating to leverage threaded IRQ support
(expected to arrive in mainline "soon").

Once the core is in mainline, drivers for other parts of this
chip can follow its lead and start swimming upstream too.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
This commit is contained in:
David Brownell 2008-10-15 12:15:39 +02:00 committed by Samuel Ortiz
parent 9e78cfe53f
commit a603a7fa87
4 changed files with 1612 additions and 0 deletions
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14
drivers/mfd/Kconfig
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@ -59,6 +59,20 @@ config UCB1400_CORE
To compile this driver as a module, choose M here: the To compile this driver as a module, choose M here: the
module will be called ucb1400_core. module will be called ucb1400_core.
config TWL4030_CORE
bool "Texas Instruments TWL4030/TPS659x0 Support"
depends on I2C=y && GENERIC_HARDIRQS && (ARCH_OMAP2 || ARCH_OMAP3)
help
Say yes here if you have TWL4030 family chip on your board.
This core driver provides register access and IRQ handling
facilities, and registers devices for the various functions
so that function-specific drivers can bind to them.
These multi-function chips are found on many OMAP2 and OMAP3
boards, providing power management, RTC, GPIO, keypad, a
high speed USB OTG transceiver, an audio codec (on most
versions) and many other features.
config MFD_TMIO config MFD_TMIO
bool bool
default n default n

2
drivers/mfd/Makefile
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@ -17,6 +17,8 @@ wm8350-objs := wm8350-core.o wm8350-regmap.o wm8350-gpio.o
obj-$(CONFIG_MFD_WM8350) += wm8350.o obj-$(CONFIG_MFD_WM8350) += wm8350.o
obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o
obj-$(CONFIG_TWL4030_CORE) += twl4030-core.o
obj-$(CONFIG_MFD_CORE) += mfd-core.o obj-$(CONFIG_MFD_CORE) += mfd-core.o
obj-$(CONFIG_MCP) += mcp-core.o obj-$(CONFIG_MCP) += mcp-core.o

1257
drivers/mfd/twl4030-core.c Normal file
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File diff suppressed because it is too large Load diff

339
include/linux/i2c/twl4030.h Normal file
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@ -0,0 +1,339 @@
/*
* twl4030.h - header for TWL4030 PM and audio CODEC device
*
* Copyright (C) 2005-2006 Texas Instruments, Inc.
*
* Based on tlv320aic23.c:
* Copyright (c) by Kai Svahn <kai.svahn@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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __TWL4030_H_
#define __TWL4030_H_
/*
* Using the twl4030 core we address registers using a pair
* { module id, relative register offset }
* which that core then maps to the relevant
* { i2c slave, absolute register address }
*
* The module IDs are meaningful only to the twl4030 core code,
* which uses them as array indices to look up the first register
* address each module uses within a given i2c slave.
*/
/* Slave 0 (i2c address 0x48) */
#define TWL4030_MODULE_USB 0x00
/* Slave 1 (i2c address 0x49) */
#define TWL4030_MODULE_AUDIO_VOICE 0x01
#define TWL4030_MODULE_GPIO 0x02
#define TWL4030_MODULE_INTBR 0x03
#define TWL4030_MODULE_PIH 0x04
#define TWL4030_MODULE_TEST 0x05
/* Slave 2 (i2c address 0x4a) */
#define TWL4030_MODULE_KEYPAD 0x06
#define TWL4030_MODULE_MADC 0x07
#define TWL4030_MODULE_INTERRUPTS 0x08
#define TWL4030_MODULE_LED 0x09
#define TWL4030_MODULE_MAIN_CHARGE 0x0A
#define TWL4030_MODULE_PRECHARGE 0x0B
#define TWL4030_MODULE_PWM0 0x0C
#define TWL4030_MODULE_PWM1 0x0D
#define TWL4030_MODULE_PWMA 0x0E
#define TWL4030_MODULE_PWMB 0x0F
/* Slave 3 (i2c address 0x4b) */
#define TWL4030_MODULE_BACKUP 0x10
#define TWL4030_MODULE_INT 0x11
#define TWL4030_MODULE_PM_MASTER 0x12
#define TWL4030_MODULE_PM_RECEIVER 0x13
#define TWL4030_MODULE_RTC 0x14
#define TWL4030_MODULE_SECURED_REG 0x15
/*
* Read and write single 8-bit registers
*/
int twl4030_i2c_write_u8(u8 mod_no, u8 val, u8 reg);
int twl4030_i2c_read_u8(u8 mod_no, u8 *val, u8 reg);
/*
* Read and write several 8-bit registers at once.
*
* IMPORTANT: For twl4030_i2c_write(), allocate num_bytes + 1
* for the value, and populate your data starting at offset 1.
*/
int twl4030_i2c_write(u8 mod_no, u8 *value, u8 reg, u8 num_bytes);
int twl4030_i2c_read(u8 mod_no, u8 *value, u8 reg, u8 num_bytes);
/*----------------------------------------------------------------------*/
/*
* NOTE: at up to 1024 registers, this is a big chip.
*
* Avoid putting register declarations in this file, instead of into
* a driver-private file, unless some of the registers in a block
* need to be shared with other drivers. One example is blocks that
* have Secondary IRQ Handler (SIH) registers.
*/
#define TWL4030_SIH_CTRL_EXCLEN_MASK BIT(0)
#define TWL4030_SIH_CTRL_PENDDIS_MASK BIT(1)
#define TWL4030_SIH_CTRL_COR_MASK BIT(2)
/*----------------------------------------------------------------------*/
/*
* GPIO Block Register offsets (use TWL4030_MODULE_GPIO)
*/
#define REG_GPIODATAIN1 0x0
#define REG_GPIODATAIN2 0x1
#define REG_GPIODATAIN3 0x2
#define REG_GPIODATADIR1 0x3
#define REG_GPIODATADIR2 0x4
#define REG_GPIODATADIR3 0x5
#define REG_GPIODATAOUT1 0x6
#define REG_GPIODATAOUT2 0x7
#define REG_GPIODATAOUT3 0x8
#define REG_CLEARGPIODATAOUT1 0x9
#define REG_CLEARGPIODATAOUT2 0xA
#define REG_CLEARGPIODATAOUT3 0xB
#define REG_SETGPIODATAOUT1 0xC
#define REG_SETGPIODATAOUT2 0xD
#define REG_SETGPIODATAOUT3 0xE
#define REG_GPIO_DEBEN1 0xF
#define REG_GPIO_DEBEN2 0x10
#define REG_GPIO_DEBEN3 0x11
#define REG_GPIO_CTRL 0x12
#define REG_GPIOPUPDCTR1 0x13
#define REG_GPIOPUPDCTR2 0x14
#define REG_GPIOPUPDCTR3 0x15
#define REG_GPIOPUPDCTR4 0x16
#define REG_GPIOPUPDCTR5 0x17
#define REG_GPIO_ISR1A 0x19
#define REG_GPIO_ISR2A 0x1A
#define REG_GPIO_ISR3A 0x1B
#define REG_GPIO_IMR1A 0x1C
#define REG_GPIO_IMR2A 0x1D
#define REG_GPIO_IMR3A 0x1E
#define REG_GPIO_ISR1B 0x1F
#define REG_GPIO_ISR2B 0x20
#define REG_GPIO_ISR3B 0x21
#define REG_GPIO_IMR1B 0x22
#define REG_GPIO_IMR2B 0x23
#define REG_GPIO_IMR3B 0x24
#define REG_GPIO_EDR1 0x28
#define REG_GPIO_EDR2 0x29
#define REG_GPIO_EDR3 0x2A
#define REG_GPIO_EDR4 0x2B
#define REG_GPIO_EDR5 0x2C
#define REG_GPIO_SIH_CTRL 0x2D
/* Up to 18 signals are available as GPIOs, when their
* pins are not assigned to another use (such as ULPI/USB).
*/
#define TWL4030_GPIO_MAX 18
/*----------------------------------------------------------------------*/
/*
* Keypad register offsets (use TWL4030_MODULE_KEYPAD)
* ... SIH/interrupt only
*/
#define TWL4030_KEYPAD_KEYP_ISR1 0x11
#define TWL4030_KEYPAD_KEYP_IMR1 0x12
#define TWL4030_KEYPAD_KEYP_ISR2 0x13
#define TWL4030_KEYPAD_KEYP_IMR2 0x14
#define TWL4030_KEYPAD_KEYP_SIR 0x15 /* test register */
#define TWL4030_KEYPAD_KEYP_EDR 0x16
#define TWL4030_KEYPAD_KEYP_SIH_CTRL 0x17
/*----------------------------------------------------------------------*/
/*
* Multichannel ADC register offsets (use TWL4030_MODULE_MADC)
* ... SIH/interrupt only
*/
#define TWL4030_MADC_ISR1 0x61
#define TWL4030_MADC_IMR1 0x62
#define TWL4030_MADC_ISR2 0x63
#define TWL4030_MADC_IMR2 0x64
#define TWL4030_MADC_SIR 0x65 /* test register */
#define TWL4030_MADC_EDR 0x66
#define TWL4030_MADC_SIH_CTRL 0x67
/*----------------------------------------------------------------------*/
/*
* Battery charger register offsets (use TWL4030_MODULE_INTERRUPTS)
*/
#define TWL4030_INTERRUPTS_BCIISR1A 0x0
#define TWL4030_INTERRUPTS_BCIISR2A 0x1
#define TWL4030_INTERRUPTS_BCIIMR1A 0x2
#define TWL4030_INTERRUPTS_BCIIMR2A 0x3
#define TWL4030_INTERRUPTS_BCIISR1B 0x4
#define TWL4030_INTERRUPTS_BCIISR2B 0x5
#define TWL4030_INTERRUPTS_BCIIMR1B 0x6
#define TWL4030_INTERRUPTS_BCIIMR2B 0x7
#define TWL4030_INTERRUPTS_BCISIR1 0x8 /* test register */
#define TWL4030_INTERRUPTS_BCISIR2 0x9 /* test register */
#define TWL4030_INTERRUPTS_BCIEDR1 0xa
#define TWL4030_INTERRUPTS_BCIEDR2 0xb
#define TWL4030_INTERRUPTS_BCIEDR3 0xc
#define TWL4030_INTERRUPTS_BCISIHCTRL 0xd
/*----------------------------------------------------------------------*/
/*
* Power Interrupt block register offsets (use TWL4030_MODULE_INT)
*/
#define TWL4030_INT_PWR_ISR1 0x0
#define TWL4030_INT_PWR_IMR1 0x1
#define TWL4030_INT_PWR_ISR2 0x2
#define TWL4030_INT_PWR_IMR2 0x3
#define TWL4030_INT_PWR_SIR 0x4 /* test register */
#define TWL4030_INT_PWR_EDR1 0x5
#define TWL4030_INT_PWR_EDR2 0x6
#define TWL4030_INT_PWR_SIH_CTRL 0x7
/*----------------------------------------------------------------------*/
struct twl4030_bci_platform_data {
int *battery_tmp_tbl;
unsigned int tblsize;
};
/* TWL4030_GPIO_MAX (18) GPIOs, with interrupts */
struct twl4030_gpio_platform_data {
int gpio_base;
unsigned irq_base, irq_end;
/* For gpio-N, bit (1 << N) in "pullups" is set if that pullup
* should be enabled. Else, if that bit is set in "pulldowns",
* that pulldown is enabled. Don't waste power by letting any
* digital inputs float...
*/
u32 pullups;
u32 pulldowns;
int (*setup)(struct device *dev,
unsigned gpio, unsigned ngpio);
int (*teardown)(struct device *dev,
unsigned gpio, unsigned ngpio);
};
struct twl4030_madc_platform_data {
int irq_line;
};
struct twl4030_keypad_data {
int rows;
int cols;
int *keymap;
int irq;
unsigned int keymapsize;
unsigned int rep:1;
};
enum twl4030_usb_mode {
T2_USB_MODE_ULPI = 1,
T2_USB_MODE_CEA2011_3PIN = 2,
};
struct twl4030_usb_data {
enum twl4030_usb_mode usb_mode;
};
struct twl4030_platform_data {
unsigned irq_base, irq_end;
struct twl4030_bci_platform_data *bci;
struct twl4030_gpio_platform_data *gpio;
struct twl4030_madc_platform_data *madc;
struct twl4030_keypad_data *keypad;
struct twl4030_usb_data *usb;
/* REVISIT more to come ... _nothing_ should be hard-wired */
};
/*----------------------------------------------------------------------*/
/*
* FIXME completely stop using TWL4030_IRQ_BASE ... instead, pass the
* IRQ data to subsidiary devices using platform device resources.
*/
/* IRQ information-need base */
#include <mach/irqs.h>
/* TWL4030 interrupts */
/* #define TWL4030_MODIRQ_GPIO (TWL4030_IRQ_BASE + 0) */
#define TWL4030_MODIRQ_KEYPAD (TWL4030_IRQ_BASE + 1)
#define TWL4030_MODIRQ_BCI (TWL4030_IRQ_BASE + 2)
#define TWL4030_MODIRQ_MADC (TWL4030_IRQ_BASE + 3)
/* #define TWL4030_MODIRQ_USB (TWL4030_IRQ_BASE + 4) */
#define TWL4030_MODIRQ_PWR (TWL4030_IRQ_BASE + 5)
#define TWL4030_PWRIRQ_PWRBTN (TWL4030_PWR_IRQ_BASE + 0)
#define TWL4030_PWRIRQ_CHG_PRES (TWL4030_PWR_IRQ_BASE + 1)
#define TWL4030_PWRIRQ_USB_PRES (TWL4030_PWR_IRQ_BASE + 2)
#define TWL4030_PWRIRQ_RTC (TWL4030_PWR_IRQ_BASE + 3)
#define TWL4030_PWRIRQ_HOT_DIE (TWL4030_PWR_IRQ_BASE + 4)
#define TWL4030_PWRIRQ_PWROK_TIMEOUT (TWL4030_PWR_IRQ_BASE + 5)
#define TWL4030_PWRIRQ_MBCHG (TWL4030_PWR_IRQ_BASE + 6)
#define TWL4030_PWRIRQ_SC_DETECT (TWL4030_PWR_IRQ_BASE + 7)
/* Rest are unsued currently*/
/* Offsets to Power Registers */
#define TWL4030_VDAC_DEV_GRP 0x3B
#define TWL4030_VDAC_DEDICATED 0x3E
#define TWL4030_VAUX1_DEV_GRP 0x17
#define TWL4030_VAUX1_DEDICATED 0x1A
#define TWL4030_VAUX2_DEV_GRP 0x1B
#define TWL4030_VAUX2_DEDICATED 0x1E
#define TWL4030_VAUX3_DEV_GRP 0x1F
#define TWL4030_VAUX3_DEDICATED 0x22
/* TWL4030 GPIO interrupt definitions */
#define TWL4030_GPIO_IRQ_NO(n) (TWL4030_GPIO_IRQ_BASE + (n))
#define TWL4030_GPIO_IS_ENABLE 1
/*
* Exported TWL4030 GPIO APIs
*
* WARNING -- use standard GPIO and IRQ calls instead; these will vanish.
*/
int twl4030_get_gpio_datain(int gpio);
int twl4030_request_gpio(int gpio);
int twl4030_set_gpio_debounce(int gpio, int enable);
int twl4030_free_gpio(int gpio);
#if defined(CONFIG_TWL4030_BCI_BATTERY) || \
defined(CONFIG_TWL4030_BCI_BATTERY_MODULE)
extern int twl4030charger_usb_en(int enable);
#else
static inline int twl4030charger_usb_en(int enable) { return 0; }
#endif
#endif /* End of __TWL4030_H */