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5b9cecd68f
Fix the following section mismatch warning when building omap2plus_defconfig: WARNING: vmlinux.o(.data+0x47d7c): Section mismatch in reference from the variable twl_driver to the function .init.text:twl_probe() Signed-off-by: Bryan Wu <bryan.wu@canonical.com> Signed-off-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
1134 lines
30 KiB
C
1134 lines
30 KiB
C
/*
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* twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM
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* 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/twl.h>
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#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
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#include <plat/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 "twl"
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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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#ifdef CONFIG_TWL4030_POWER
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#define twl_has_power() true
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#else
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#define twl_has_power() 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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defined(CONFIG_TWL6030_USB) || defined(CONFIG_TWL6030_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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#if defined(CONFIG_TWL4030_WATCHDOG) || \
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defined(CONFIG_TWL4030_WATCHDOG_MODULE)
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#define twl_has_watchdog() true
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#else
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#define twl_has_watchdog() false
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#endif
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#if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) ||\
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defined(CONFIG_SND_SOC_TWL6040) || defined(CONFIG_SND_SOC_TWL6040_MODULE)
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#define twl_has_codec() true
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#else
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#define twl_has_codec() false
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#endif
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#if defined(CONFIG_CHARGER_TWL4030) || defined(CONFIG_CHARGER_TWL4030_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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/* 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 TWL_NUM_SLAVES 4
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#if defined(CONFIG_INPUT_TWL4030_PWRBUTTON) \
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|| defined(CONFIG_INPUT_TWL4030_PWRBUTTON_MODULE)
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#define twl_has_pwrbutton() true
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#else
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#define twl_has_pwrbutton() false
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#endif
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#define SUB_CHIP_ID0 0
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#define SUB_CHIP_ID1 1
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#define SUB_CHIP_ID2 2
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#define SUB_CHIP_ID3 3
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#define TWL_MODULE_LAST TWL4030_MODULE_LAST
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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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#define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */
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#define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's
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one */
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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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/* subchip/slave 0 0x48 - POWER */
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#define TWL6030_BASEADD_RTC 0x0000
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#define TWL6030_BASEADD_MEM 0x0017
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#define TWL6030_BASEADD_PM_MASTER 0x001F
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#define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */
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#define TWL6030_BASEADD_PM_MISC 0x00E2
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#define TWL6030_BASEADD_PM_PUPD 0x00F0
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/* subchip/slave 1 0x49 - FEATURE */
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#define TWL6030_BASEADD_USB 0x0000
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#define TWL6030_BASEADD_GPADC_CTRL 0x002E
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#define TWL6030_BASEADD_AUX 0x0090
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#define TWL6030_BASEADD_PWM 0x00BA
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#define TWL6030_BASEADD_GASGAUGE 0x00C0
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#define TWL6030_BASEADD_PIH 0x00D0
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#define TWL6030_BASEADD_CHARGER 0x00E0
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/* subchip/slave 2 0x4A - DFT */
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#define TWL6030_BASEADD_DIEID 0x00C0
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/* subchip/slave 3 0x4B - AUDIO */
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#define TWL6030_BASEADD_AUDIO 0x0000
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#define TWL6030_BASEADD_RSV 0x0000
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#define TWL6030_BASEADD_ZERO 0x0000
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/* Few power values */
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#define R_CFG_BOOT 0x05
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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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#define CK32K_LOWPWR_EN (1 << 7)
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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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#define TWL5031 BIT(2) /* twl5031 has different registers */
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#define TWL6030_CLASS BIT(3) /* TWL6030 class */
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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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static unsigned int twl_id;
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unsigned int twl_rev(void)
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{
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return twl_id;
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}
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EXPORT_SYMBOL(twl_rev);
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/* Structure for each TWL4030/TWL6030 Slave */
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struct twl_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 twl_client twl_modules[TWL_NUM_SLAVES];
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/* mapping the module id to slave id and base address */
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struct twl_mapping {
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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 twl_mapping *twl_map;
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static struct twl_mapping 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/twl.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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{ 2, TWL5031_BASEADD_ACCESSORY },
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{ 2, TWL5031_BASEADD_INTERRUPTS },
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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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static struct twl_mapping twl6030_map[] = {
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/*
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* NOTE: don't change this table without updating the
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* <linux/i2c/twl.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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{ SUB_CHIP_ID1, TWL6030_BASEADD_USB },
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{ SUB_CHIP_ID3, TWL6030_BASEADD_AUDIO },
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{ SUB_CHIP_ID2, TWL6030_BASEADD_DIEID },
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{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
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{ SUB_CHIP_ID1, TWL6030_BASEADD_PIH },
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{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
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{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
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{ SUB_CHIP_ID1, TWL6030_BASEADD_GPADC_CTRL },
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{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
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{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
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{ SUB_CHIP_ID1, TWL6030_BASEADD_CHARGER },
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{ SUB_CHIP_ID1, TWL6030_BASEADD_GASGAUGE },
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{ SUB_CHIP_ID1, TWL6030_BASEADD_PWM },
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{ SUB_CHIP_ID0, TWL6030_BASEADD_ZERO },
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{ SUB_CHIP_ID1, TWL6030_BASEADD_ZERO },
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{ SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
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{ SUB_CHIP_ID2, TWL6030_BASEADD_ZERO },
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{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
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{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
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{ SUB_CHIP_ID2, TWL6030_BASEADD_RSV },
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{ SUB_CHIP_ID0, TWL6030_BASEADD_PM_MASTER },
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{ SUB_CHIP_ID0, TWL6030_BASEADD_PM_SLAVE_MISC },
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{ SUB_CHIP_ID0, TWL6030_BASEADD_RTC },
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{ SUB_CHIP_ID0, TWL6030_BASEADD_MEM },
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};
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/*----------------------------------------------------------------------*/
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/* Exported Functions */
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/**
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* twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0
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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 twl_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 twl_client *twl;
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struct i2c_msg *msg;
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if (unlikely(mod_no > TWL_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 = twl_map[mod_no].sid;
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twl = &twl_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 = twl_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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/* i2c_transfer returns number of messages transferred */
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if (ret != 1) {
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pr_err("%s: i2c_write failed to transfer all messages\n",
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DRIVER_NAME);
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if (ret < 0)
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return ret;
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else
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return -EIO;
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} else {
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return 0;
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}
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}
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EXPORT_SYMBOL(twl_i2c_write);
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/**
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* twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0
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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 twl_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 twl_client *twl;
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struct i2c_msg *msg;
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if (unlikely(mod_no > TWL_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 = twl_map[mod_no].sid;
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twl = &twl_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 = twl_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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/* i2c_transfer returns number of messages transferred */
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if (ret != 2) {
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pr_err("%s: i2c_read failed to transfer all messages\n",
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DRIVER_NAME);
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if (ret < 0)
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return ret;
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else
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|
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_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_usb() && pdata->usb && twl_class_is_6030()) {
|
|
|
|
static struct regulator_consumer_supply usb3v3 = {
|
|
.supply = "vusb",
|
|
};
|
|
|
|
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(TWL6030_REG_VUSB,
|
|
&usb_fixed, &usb3v3, 1);
|
|
if (IS_ERR(child))
|
|
return PTR_ERR(child);
|
|
}
|
|
|
|
child = add_child(0, "twl6030_usb",
|
|
pdata->usb, sizeof(*pdata->usb),
|
|
true,
|
|
/* irq1 = VBUS_PRES, irq0 = USB ID */
|
|
pdata->irq_base + USBOTG_INTR_OFFSET,
|
|
pdata->irq_base + USB_PRES_INTR_OFFSET);
|
|
|
|
if (IS_ERR(child))
|
|
return PTR_ERR(child);
|
|
/* we need to connect regulators to this transceiver */
|
|
if (twl_has_regulator() && child)
|
|
usb3v3.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 && twl_class_is_4030()) {
|
|
sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
|
|
child = add_child(sub_chip_id, "twl4030-audio",
|
|
pdata->codec, sizeof(*pdata->codec),
|
|
false, 0, 0);
|
|
if (IS_ERR(child))
|
|
return PTR_ERR(child);
|
|
}
|
|
|
|
/* Phoenix codec driver is probed directly atm */
|
|
if (twl_has_codec() && pdata->codec && twl_class_is_6030()) {
|
|
sub_chip_id = twl_map[TWL_MODULE_AUDIO_VOICE].sid;
|
|
child = add_child(sub_chip_id, "twl6040-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_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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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(TWL4030_MODULE_PM_MASTER, 0,
|
|
TWL4030_PM_MASTER_PROTECT_KEY);
|
|
return e;
|
|
}
|
|
|
|
static inline int __init unprotect_pm_master(void)
|
|
{
|
|
int e = 0;
|
|
|
|
e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
|
|
TWL4030_PM_MASTER_KEY_CFG1,
|
|
TWL4030_PM_MASTER_PROTECT_KEY);
|
|
e |= twl_i2c_write_u8(TWL4030_MODULE_PM_MASTER,
|
|
TWL4030_PM_MASTER_KEY_CFG2,
|
|
TWL4030_PM_MASTER_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 __devinit
|
|
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;
|
|
u8 temp;
|
|
|
|
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;
|
|
}
|
|
|
|
/* Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface.
|
|
* Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0,
|
|
* SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0.
|
|
*/
|
|
|
|
if (twl_class_is_4030()) {
|
|
twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1);
|
|
temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \
|
|
I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU);
|
|
twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1);
|
|
}
|
|
|
|
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");
|