mirror of https://gitee.com/openkylin/linux.git
830 lines
21 KiB
C
830 lines
21 KiB
C
/*
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* twl4030_core.c - driver for TWL4030/TPS659x0 PM and audio CODEC devices
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*
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* Copyright (C) 2005-2006 Texas Instruments, Inc.
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*
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* Modifications to defer interrupt handling to a kernel thread:
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* Copyright (C) 2006 MontaVista Software, Inc.
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*
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* Based on tlv320aic23.c:
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* Copyright (c) by Kai Svahn <kai.svahn@nokia.com>
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*
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* Code cleanup and modifications to IRQ handler.
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* by syed khasim <x0khasim@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/init.h>
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#include <linux/mutex.h>
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#include <linux/platform_device.h>
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/regulator/machine.h>
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#include <linux/i2c.h>
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#include <linux/i2c/twl4030.h>
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#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
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#include <mach/cpu.h>
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#endif
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/*
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* The TWL4030 "Triton 2" is one of a family of a multi-function "Power
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* Management and System Companion Device" chips originally designed for
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* use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C,
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* often at around 3 Mbit/sec, including for interrupt handling.
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*
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* This driver core provides genirq support for the interrupts emitted,
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* by the various modules, and exports register access primitives.
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*
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* FIXME this driver currently requires use of the first interrupt line
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* (and associated registers).
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*/
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#define DRIVER_NAME "twl4030"
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#if defined(CONFIG_TWL4030_BCI_BATTERY) || \
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defined(CONFIG_TWL4030_BCI_BATTERY_MODULE)
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#define twl_has_bci() true
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#else
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#define twl_has_bci() false
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#endif
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#if defined(CONFIG_KEYBOARD_TWL4030) || defined(CONFIG_KEYBOARD_TWL4030_MODULE)
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#define twl_has_keypad() true
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#else
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#define twl_has_keypad() false
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#endif
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#if defined(CONFIG_GPIO_TWL4030) || defined(CONFIG_GPIO_TWL4030_MODULE)
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#define twl_has_gpio() true
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#else
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#define twl_has_gpio() false
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#endif
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#if defined(CONFIG_REGULATOR_TWL4030) \
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|| defined(CONFIG_REGULATOR_TWL4030_MODULE)
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#define twl_has_regulator() true
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#else
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#define twl_has_regulator() false
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#endif
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#if defined(CONFIG_TWL4030_MADC) || defined(CONFIG_TWL4030_MADC_MODULE)
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#define twl_has_madc() true
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#else
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#define twl_has_madc() false
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#endif
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#if defined(CONFIG_RTC_DRV_TWL4030) || defined(CONFIG_RTC_DRV_TWL4030_MODULE)
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#define twl_has_rtc() true
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#else
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#define twl_has_rtc() false
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#endif
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#if defined(CONFIG_TWL4030_USB) || defined(CONFIG_TWL4030_USB_MODULE)
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#define twl_has_usb() true
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#else
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#define twl_has_usb() false
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#endif
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/* Triton Core internal information (BEGIN) */
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/* Last - for index max*/
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#define TWL4030_MODULE_LAST TWL4030_MODULE_SECURED_REG
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#define TWL4030_NUM_SLAVES 4
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/* Base Address defns for twl4030_map[] */
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/* subchip/slave 0 - USB ID */
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#define TWL4030_BASEADD_USB 0x0000
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/* subchip/slave 1 - AUD ID */
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#define TWL4030_BASEADD_AUDIO_VOICE 0x0000
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#define TWL4030_BASEADD_GPIO 0x0098
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#define TWL4030_BASEADD_INTBR 0x0085
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#define TWL4030_BASEADD_PIH 0x0080
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#define TWL4030_BASEADD_TEST 0x004C
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/* subchip/slave 2 - AUX ID */
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#define TWL4030_BASEADD_INTERRUPTS 0x00B9
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#define TWL4030_BASEADD_LED 0x00EE
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#define TWL4030_BASEADD_MADC 0x0000
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#define TWL4030_BASEADD_MAIN_CHARGE 0x0074
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#define TWL4030_BASEADD_PRECHARGE 0x00AA
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#define TWL4030_BASEADD_PWM0 0x00F8
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#define TWL4030_BASEADD_PWM1 0x00FB
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#define TWL4030_BASEADD_PWMA 0x00EF
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#define TWL4030_BASEADD_PWMB 0x00F1
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#define TWL4030_BASEADD_KEYPAD 0x00D2
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/* subchip/slave 3 - POWER ID */
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#define TWL4030_BASEADD_BACKUP 0x0014
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#define TWL4030_BASEADD_INT 0x002E
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#define TWL4030_BASEADD_PM_MASTER 0x0036
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#define TWL4030_BASEADD_PM_RECEIVER 0x005B
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#define TWL4030_BASEADD_RTC 0x001C
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#define TWL4030_BASEADD_SECURED_REG 0x0000
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/* Triton Core internal information (END) */
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/* Few power values */
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#define R_CFG_BOOT 0x05
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#define R_PROTECT_KEY 0x0E
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/* access control values for R_PROTECT_KEY */
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#define KEY_UNLOCK1 0xce
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#define KEY_UNLOCK2 0xec
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#define KEY_LOCK 0x00
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/* some fields in R_CFG_BOOT */
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#define HFCLK_FREQ_19p2_MHZ (1 << 0)
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#define HFCLK_FREQ_26_MHZ (2 << 0)
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#define HFCLK_FREQ_38p4_MHZ (3 << 0)
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#define HIGH_PERF_SQ (1 << 3)
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/* chip-specific feature flags, for i2c_device_id.driver_data */
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#define TWL4030_VAUX2 BIT(0) /* pre-5030 voltage ranges */
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#define TPS_SUBSET BIT(1) /* tps659[23]0 have fewer LDOs */
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/*----------------------------------------------------------------------*/
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/* is driver active, bound to a chip? */
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static bool inuse;
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/* Structure for each TWL4030 Slave */
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struct twl4030_client {
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struct i2c_client *client;
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u8 address;
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/* max numb of i2c_msg required is for read =2 */
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struct i2c_msg xfer_msg[2];
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/* To lock access to xfer_msg */
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struct mutex xfer_lock;
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};
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static struct twl4030_client twl4030_modules[TWL4030_NUM_SLAVES];
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/* mapping the module id to slave id and base address */
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struct twl4030mapping {
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unsigned char sid; /* Slave ID */
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unsigned char base; /* base address */
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};
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static struct twl4030mapping twl4030_map[TWL4030_MODULE_LAST + 1] = {
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/*
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* NOTE: don't change this table without updating the
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* <linux/i2c/twl4030.h> defines for TWL4030_MODULE_*
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* so they continue to match the order in this table.
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*/
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{ 0, TWL4030_BASEADD_USB },
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{ 1, TWL4030_BASEADD_AUDIO_VOICE },
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{ 1, TWL4030_BASEADD_GPIO },
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{ 1, TWL4030_BASEADD_INTBR },
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{ 1, TWL4030_BASEADD_PIH },
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{ 1, TWL4030_BASEADD_TEST },
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{ 2, TWL4030_BASEADD_KEYPAD },
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{ 2, TWL4030_BASEADD_MADC },
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{ 2, TWL4030_BASEADD_INTERRUPTS },
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{ 2, TWL4030_BASEADD_LED },
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{ 2, TWL4030_BASEADD_MAIN_CHARGE },
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{ 2, TWL4030_BASEADD_PRECHARGE },
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{ 2, TWL4030_BASEADD_PWM0 },
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{ 2, TWL4030_BASEADD_PWM1 },
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{ 2, TWL4030_BASEADD_PWMA },
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{ 2, TWL4030_BASEADD_PWMB },
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{ 3, TWL4030_BASEADD_BACKUP },
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{ 3, TWL4030_BASEADD_INT },
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{ 3, TWL4030_BASEADD_PM_MASTER },
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{ 3, TWL4030_BASEADD_PM_RECEIVER },
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{ 3, TWL4030_BASEADD_RTC },
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{ 3, TWL4030_BASEADD_SECURED_REG },
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};
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/*----------------------------------------------------------------------*/
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/* Exported Functions */
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/**
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* twl4030_i2c_write - Writes a n bit register in TWL4030
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* @mod_no: module number
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* @value: an array of num_bytes+1 containing data to write
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* @reg: register address (just offset will do)
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* @num_bytes: number of bytes to transfer
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*
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* IMPORTANT: for 'value' parameter: Allocate value num_bytes+1 and
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* valid data starts at Offset 1.
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*
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* Returns the result of operation - 0 is success
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*/
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int twl4030_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
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{
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int ret;
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int sid;
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struct twl4030_client *twl;
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struct i2c_msg *msg;
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if (unlikely(mod_no > TWL4030_MODULE_LAST)) {
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pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
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return -EPERM;
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}
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sid = twl4030_map[mod_no].sid;
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twl = &twl4030_modules[sid];
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if (unlikely(!inuse)) {
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pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
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return -EPERM;
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}
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mutex_lock(&twl->xfer_lock);
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/*
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* [MSG1]: fill the register address data
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* fill the data Tx buffer
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*/
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msg = &twl->xfer_msg[0];
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msg->addr = twl->address;
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msg->len = num_bytes + 1;
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msg->flags = 0;
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msg->buf = value;
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/* over write the first byte of buffer with the register address */
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*value = twl4030_map[mod_no].base + reg;
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ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 1);
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mutex_unlock(&twl->xfer_lock);
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/* i2cTransfer returns num messages.translate it pls.. */
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if (ret >= 0)
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ret = 0;
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return ret;
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}
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EXPORT_SYMBOL(twl4030_i2c_write);
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/**
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* twl4030_i2c_read - Reads a n bit register in TWL4030
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* @mod_no: module number
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* @value: an array of num_bytes containing data to be read
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* @reg: register address (just offset will do)
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* @num_bytes: number of bytes to transfer
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*
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* Returns result of operation - num_bytes is success else failure.
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*/
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int twl4030_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes)
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{
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int ret;
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u8 val;
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int sid;
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struct twl4030_client *twl;
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struct i2c_msg *msg;
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if (unlikely(mod_no > TWL4030_MODULE_LAST)) {
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pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no);
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return -EPERM;
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}
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sid = twl4030_map[mod_no].sid;
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twl = &twl4030_modules[sid];
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if (unlikely(!inuse)) {
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pr_err("%s: client %d is not initialized\n", DRIVER_NAME, sid);
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return -EPERM;
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}
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mutex_lock(&twl->xfer_lock);
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/* [MSG1] fill the register address data */
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msg = &twl->xfer_msg[0];
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msg->addr = twl->address;
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msg->len = 1;
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msg->flags = 0; /* Read the register value */
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val = twl4030_map[mod_no].base + reg;
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msg->buf = &val;
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/* [MSG2] fill the data rx buffer */
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msg = &twl->xfer_msg[1];
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msg->addr = twl->address;
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msg->flags = I2C_M_RD; /* Read the register value */
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msg->len = num_bytes; /* only n bytes */
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msg->buf = value;
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ret = i2c_transfer(twl->client->adapter, twl->xfer_msg, 2);
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mutex_unlock(&twl->xfer_lock);
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/* i2cTransfer returns num messages.translate it pls.. */
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if (ret >= 0)
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ret = 0;
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return ret;
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}
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EXPORT_SYMBOL(twl4030_i2c_read);
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/**
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* twl4030_i2c_write_u8 - Writes a 8 bit register in TWL4030
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* @mod_no: module number
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* @value: the value to be written 8 bit
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* @reg: register address (just offset will do)
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*
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* Returns result of operation - 0 is success
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*/
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int twl4030_i2c_write_u8(u8 mod_no, u8 value, u8 reg)
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{
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/* 2 bytes offset 1 contains the data offset 0 is used by i2c_write */
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u8 temp_buffer[2] = { 0 };
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/* offset 1 contains the data */
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temp_buffer[1] = value;
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return twl4030_i2c_write(mod_no, temp_buffer, reg, 1);
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}
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EXPORT_SYMBOL(twl4030_i2c_write_u8);
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/**
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* twl4030_i2c_read_u8 - Reads a 8 bit register from TWL4030
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* @mod_no: module number
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* @value: the value read 8 bit
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* @reg: register address (just offset will do)
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*
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* Returns result of operation - 0 is success
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*/
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int twl4030_i2c_read_u8(u8 mod_no, u8 *value, u8 reg)
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{
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return twl4030_i2c_read(mod_no, value, reg, 1);
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}
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EXPORT_SYMBOL(twl4030_i2c_read_u8);
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/*----------------------------------------------------------------------*/
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static struct device *
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add_numbered_child(unsigned chip, const char *name, int num,
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void *pdata, unsigned pdata_len,
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bool can_wakeup, int irq0, int irq1)
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{
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struct platform_device *pdev;
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struct twl4030_client *twl = &twl4030_modules[chip];
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int status;
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pdev = platform_device_alloc(name, num);
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if (!pdev) {
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dev_dbg(&twl->client->dev, "can't alloc dev\n");
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status = -ENOMEM;
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goto err;
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}
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device_init_wakeup(&pdev->dev, can_wakeup);
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pdev->dev.parent = &twl->client->dev;
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if (pdata) {
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status = platform_device_add_data(pdev, pdata, pdata_len);
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if (status < 0) {
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dev_dbg(&pdev->dev, "can't add platform_data\n");
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goto err;
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}
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}
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if (irq0) {
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struct resource r[2] = {
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{ .start = irq0, .flags = IORESOURCE_IRQ, },
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{ .start = irq1, .flags = IORESOURCE_IRQ, },
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};
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status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1);
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if (status < 0) {
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dev_dbg(&pdev->dev, "can't add irqs\n");
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goto err;
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}
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}
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status = platform_device_add(pdev);
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err:
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if (status < 0) {
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platform_device_put(pdev);
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dev_err(&twl->client->dev, "can't add %s dev\n", name);
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return ERR_PTR(status);
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}
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return &pdev->dev;
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}
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static inline struct device *add_child(unsigned chip, const char *name,
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void *pdata, unsigned pdata_len,
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bool can_wakeup, int irq0, int irq1)
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{
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return add_numbered_child(chip, name, -1, pdata, pdata_len,
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can_wakeup, irq0, irq1);
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}
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static struct device *
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add_regulator_linked(int num, struct regulator_init_data *pdata,
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struct regulator_consumer_supply *consumers,
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unsigned num_consumers)
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{
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/* regulator framework demands init_data ... */
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if (!pdata)
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return NULL;
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if (consumers) {
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pdata->consumer_supplies = consumers;
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pdata->num_consumer_supplies = num_consumers;
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}
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/* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */
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return add_numbered_child(3, "twl4030_reg", num,
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pdata, sizeof(*pdata), false, 0, 0);
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}
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static struct device *
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add_regulator(int num, struct regulator_init_data *pdata)
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{
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return add_regulator_linked(num, pdata, NULL, 0);
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}
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/*
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* NOTE: We know the first 8 IRQs after pdata->base_irq are
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* for the PIH, and the next are for the PWR_INT SIH, since
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* that's how twl_init_irq() sets things up.
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*/
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static int
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add_children(struct twl4030_platform_data *pdata, unsigned long features)
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{
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struct device *child;
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struct device *usb_transceiver = NULL;
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if (twl_has_bci() && pdata->bci && !(features & TPS_SUBSET)) {
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child = add_child(3, "twl4030_bci",
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pdata->bci, sizeof(*pdata->bci),
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false,
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/* irq0 = CHG_PRES, irq1 = BCI */
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pdata->irq_base + 8 + 1, pdata->irq_base + 2);
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if (IS_ERR(child))
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return PTR_ERR(child);
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}
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if (twl_has_gpio() && pdata->gpio) {
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child = add_child(1, "twl4030_gpio",
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pdata->gpio, sizeof(*pdata->gpio),
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false, pdata->irq_base + 0, 0);
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if (IS_ERR(child))
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return PTR_ERR(child);
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}
|
|
|
|
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) {
|
|
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 */
|
|
usb_transceiver = 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_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);
|
|
}
|
|
|
|
if (twl_has_regulator() && usb_transceiver) {
|
|
static struct regulator_consumer_supply usb1v5 = {
|
|
.supply = "usb1v5",
|
|
};
|
|
static struct regulator_consumer_supply usb1v8 = {
|
|
.supply = "usb1v8",
|
|
};
|
|
static struct regulator_consumer_supply usb3v1 = {
|
|
.supply = "usb3v1",
|
|
};
|
|
|
|
/* 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,
|
|
};
|
|
|
|
usb1v5.dev = usb_transceiver;
|
|
usb1v8.dev = usb_transceiver;
|
|
usb3v1.dev = usb_transceiver;
|
|
|
|
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);
|
|
}
|
|
|
|
/* 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 __init clocks_init(struct device *dev)
|
|
{
|
|
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;
|
|
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);
|
|
|
|
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
|
|
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(&twl->client->dev,
|
|
"can't attach client %d\n", i);
|
|
status = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
strlcpy(twl->client->name, id->name,
|
|
sizeof(twl->client->name));
|
|
}
|
|
mutex_init(&twl->xfer_lock);
|
|
}
|
|
inuse = true;
|
|
|
|
/* setup clock framework */
|
|
clocks_init(&client->dev);
|
|
|
|
/* Maybe init the T2 Interrupt subsystem */
|
|
if (client->irq
|
|
&& pdata->irq_base
|
|
&& pdata->irq_end > pdata->irq_base) {
|
|
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 */
|
|
{ "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");
|