diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/chips/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/i2c/chips/Makefile | 1 | ||||
| -rw-r--r-- | drivers/i2c/chips/menelaus.c | 1285 |
3 files changed, 0 insertions, 1296 deletions
diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig index fa69c992c442..864ac561fdbb 100644 --- a/drivers/i2c/chips/Kconfig +++ b/drivers/i2c/chips/Kconfig @@ -151,16 +151,6 @@ config SENSORS_TSL2550 This driver can also be built as a module. If so, the module will be called tsl2550. -config MENELAUS - bool "TWL92330/Menelaus PM chip" - depends on I2C=y && ARCH_OMAP24XX - help - If you say yes here you get support for the Texas Instruments - TWL92330/Menelaus Power Management chip. This include voltage - regulators, Dual slot memory card tranceivers, real-time clock - and other features that are often used in portable devices like - cell phones and PDAs. - config MCU_MPC8349EMITX tristate "MPC8349E-mITX MCU driver" depends on I2C && PPC_83xx diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile index 0c7e2f1e0c4b..8b95f41a5001 100644 --- a/drivers/i2c/chips/Makefile +++ b/drivers/i2c/chips/Makefile @@ -19,7 +19,6 @@ obj-$(CONFIG_SENSORS_PCF8574) += pcf8574.o obj-$(CONFIG_PCF8575) += pcf8575.o obj-$(CONFIG_SENSORS_PCF8591) += pcf8591.o obj-$(CONFIG_ISP1301_OMAP) += isp1301_omap.o -obj-$(CONFIG_MENELAUS) += menelaus.o obj-$(CONFIG_SENSORS_TSL2550) += tsl2550.o obj-$(CONFIG_MCU_MPC8349EMITX) += mcu_mpc8349emitx.o diff --git a/drivers/i2c/chips/menelaus.c b/drivers/i2c/chips/menelaus.c deleted file mode 100644 index 4b364bae6b3e..000000000000 --- a/drivers/i2c/chips/menelaus.c +++ /dev/null @@ -1,1285 +0,0 @@ -/* - * Copyright (C) 2004 Texas Instruments, Inc. - * - * Some parts based tps65010.c: - * Copyright (C) 2004 Texas Instruments and - * Copyright (C) 2004-2005 David Brownell - * - * Some parts based on tlv320aic24.c: - * Copyright (C) by Kai Svahn <kai.svahn@nokia.com> - * - * Changes for interrupt handling and clean-up by - * Tony Lindgren <tony@atomide.com> and Imre Deak <imre.deak@nokia.com> - * Cleanup and generalized support for voltage setting by - * Juha Yrjola - * Added support for controlling VCORE and regulator sleep states, - * Amit Kucheria <amit.kucheria@nokia.com> - * Copyright (C) 2005, 2006 Nokia Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include <linux/module.h> -#include <linux/i2c.h> -#include <linux/interrupt.h> -#include <linux/sched.h> -#include <linux/mutex.h> -#include <linux/workqueue.h> -#include <linux/delay.h> -#include <linux/rtc.h> -#include <linux/bcd.h> - -#include <asm/mach/irq.h> - -#include <mach/gpio.h> -#include <mach/menelaus.h> - -#define DRIVER_NAME "menelaus" - -#define MENELAUS_I2C_ADDRESS 0x72 - -#define MENELAUS_REV 0x01 -#define MENELAUS_VCORE_CTRL1 0x02 -#define MENELAUS_VCORE_CTRL2 0x03 -#define MENELAUS_VCORE_CTRL3 0x04 -#define MENELAUS_VCORE_CTRL4 0x05 -#define MENELAUS_VCORE_CTRL5 0x06 -#define MENELAUS_DCDC_CTRL1 0x07 -#define MENELAUS_DCDC_CTRL2 0x08 -#define MENELAUS_DCDC_CTRL3 0x09 -#define MENELAUS_LDO_CTRL1 0x0A -#define MENELAUS_LDO_CTRL2 0x0B -#define MENELAUS_LDO_CTRL3 0x0C -#define MENELAUS_LDO_CTRL4 0x0D -#define MENELAUS_LDO_CTRL5 0x0E -#define MENELAUS_LDO_CTRL6 0x0F -#define MENELAUS_LDO_CTRL7 0x10 -#define MENELAUS_LDO_CTRL8 0x11 -#define MENELAUS_SLEEP_CTRL1 0x12 -#define MENELAUS_SLEEP_CTRL2 0x13 -#define MENELAUS_DEVICE_OFF 0x14 -#define MENELAUS_OSC_CTRL 0x15 -#define MENELAUS_DETECT_CTRL 0x16 -#define MENELAUS_INT_MASK1 0x17 -#define MENELAUS_INT_MASK2 0x18 -#define MENELAUS_INT_STATUS1 0x19 -#define MENELAUS_INT_STATUS2 0x1A -#define MENELAUS_INT_ACK1 0x1B -#define MENELAUS_INT_ACK2 0x1C -#define MENELAUS_GPIO_CTRL 0x1D -#define MENELAUS_GPIO_IN 0x1E -#define MENELAUS_GPIO_OUT 0x1F -#define MENELAUS_BBSMS 0x20 -#define MENELAUS_RTC_CTRL 0x21 -#define MENELAUS_RTC_UPDATE 0x22 -#define MENELAUS_RTC_SEC 0x23 -#define MENELAUS_RTC_MIN 0x24 -#define MENELAUS_RTC_HR 0x25 -#define MENELAUS_RTC_DAY 0x26 -#define MENELAUS_RTC_MON 0x27 -#define MENELAUS_RTC_YR 0x28 -#define MENELAUS_RTC_WKDAY 0x29 -#define MENELAUS_RTC_AL_SEC 0x2A -#define MENELAUS_RTC_AL_MIN 0x2B -#define MENELAUS_RTC_AL_HR 0x2C -#define MENELAUS_RTC_AL_DAY 0x2D -#define MENELAUS_RTC_AL_MON 0x2E -#define MENELAUS_RTC_AL_YR 0x2F -#define MENELAUS_RTC_COMP_MSB 0x30 -#define MENELAUS_RTC_COMP_LSB 0x31 -#define MENELAUS_S1_PULL_EN 0x32 -#define MENELAUS_S1_PULL_DIR 0x33 -#define MENELAUS_S2_PULL_EN 0x34 -#define MENELAUS_S2_PULL_DIR 0x35 -#define MENELAUS_MCT_CTRL1 0x36 -#define MENELAUS_MCT_CTRL2 0x37 -#define MENELAUS_MCT_CTRL3 0x38 -#define MENELAUS_MCT_PIN_ST 0x39 -#define MENELAUS_DEBOUNCE1 0x3A - -#define IH_MENELAUS_IRQS 12 -#define MENELAUS_MMC_S1CD_IRQ 0 /* MMC slot 1 card change */ -#define MENELAUS_MMC_S2CD_IRQ 1 /* MMC slot 2 card change */ -#define MENELAUS_MMC_S1D1_IRQ 2 /* MMC DAT1 low in slot 1 */ -#define MENELAUS_MMC_S2D1_IRQ 3 /* MMC DAT1 low in slot 2 */ -#define MENELAUS_LOWBAT_IRQ 4 /* Low battery */ -#define MENELAUS_HOTDIE_IRQ 5 /* Hot die detect */ -#define MENELAUS_UVLO_IRQ 6 /* UVLO detect */ -#define MENELAUS_TSHUT_IRQ 7 /* Thermal shutdown */ -#define MENELAUS_RTCTMR_IRQ 8 /* RTC timer */ -#define MENELAUS_RTCALM_IRQ 9 /* RTC alarm */ -#define MENELAUS_RTCERR_IRQ 10 /* RTC error */ -#define MENELAUS_PSHBTN_IRQ 11 /* Push button */ -#define MENELAUS_RESERVED12_IRQ 12 /* Reserved */ -#define MENELAUS_RESERVED13_IRQ 13 /* Reserved */ -#define MENELAUS_RESERVED14_IRQ 14 /* Reserved */ -#define MENELAUS_RESERVED15_IRQ 15 /* Reserved */ - -static void menelaus_work(struct work_struct *_menelaus); - -struct menelaus_chip { - struct mutex lock; - struct i2c_client *client; - struct work_struct work; -#ifdef CONFIG_RTC_DRV_TWL92330 - struct rtc_device *rtc; - u8 rtc_control; - unsigned uie:1; -#endif - unsigned vcore_hw_mode:1; - u8 mask1, mask2; - void (*handlers[16])(struct menelaus_chip *); - void (*mmc_callback)(void *data, u8 mask); - void *mmc_callback_data; -}; - -static struct menelaus_chip *the_menelaus; - -static int menelaus_write_reg(int reg, u8 value) -{ - int val = i2c_smbus_write_byte_data(the_menelaus->client, reg, value); - - if (val < 0) { - pr_err(DRIVER_NAME ": write error"); - return val; - } - - return 0; -} - -static int menelaus_read_reg(int reg) -{ - int val = i2c_smbus_read_byte_data(the_menelaus->client, reg); - - if (val < 0) - pr_err(DRIVER_NAME ": read error"); - - return val; -} - -static int menelaus_enable_irq(int irq) -{ - if (irq > 7) { - irq -= 8; - the_menelaus->mask2 &= ~(1 << irq); - return menelaus_write_reg(MENELAUS_INT_MASK2, - the_menelaus->mask2); - } else { - the_menelaus->mask1 &= ~(1 << irq); - return menelaus_write_reg(MENELAUS_INT_MASK1, - the_menelaus->mask1); - } -} - -static int menelaus_disable_irq(int irq) -{ - if (irq > 7) { - irq -= 8; - the_menelaus->mask2 |= (1 << irq); - return menelaus_write_reg(MENELAUS_INT_MASK2, - the_menelaus->mask2); - } else { - the_menelaus->mask1 |= (1 << irq); - return menelaus_write_reg(MENELAUS_INT_MASK1, - the_menelaus->mask1); - } -} - -static int menelaus_ack_irq(int irq) -{ - if (irq > 7) - return menelaus_write_reg(MENELAUS_INT_ACK2, 1 << (irq - 8)); - else - return menelaus_write_reg(MENELAUS_INT_ACK1, 1 << irq); -} - -/* Adds a handler for an interrupt. Does not run in interrupt context */ -static int menelaus_add_irq_work(int irq, - void (*handler)(struct menelaus_chip *)) -{ - int ret = 0; - - mutex_lock(&the_menelaus->lock); - the_menelaus->handlers[irq] = handler; - ret = menelaus_enable_irq(irq); - mutex_unlock(&the_menelaus->lock); - - return ret; -} - -/* Removes handler for an interrupt */ -static int menelaus_remove_irq_work(int irq) -{ - int ret = 0; - - mutex_lock(&the_menelaus->lock); - ret = menelaus_disable_irq(irq); - the_menelaus->handlers[irq] = NULL; - mutex_unlock(&the_menelaus->lock); - - return ret; -} - -/* - * Gets scheduled when a card detect interrupt happens. Note that in some cases - * this line is wired to card cover switch rather than the card detect switch - * in each slot. In this case the cards are not seen by menelaus. - * FIXME: Add handling for D1 too - */ -static void menelaus_mmc_cd_work(struct menelaus_chip *menelaus_hw) -{ - int reg; - unsigned char card_mask = 0; - - reg = menelaus_read_reg(MENELAUS_MCT_PIN_ST); - if (reg < 0) - return; - - if (!(reg & 0x1)) - card_mask |= (1 << 0); - - if (!(reg & 0x2)) - card_mask |= (1 << 1); - - if (menelaus_hw->mmc_callback) - menelaus_hw->mmc_callback(menelaus_hw->mmc_callback_data, - card_mask); -} - -/* - * Toggles the MMC slots between open-drain and push-pull mode. - */ -int menelaus_set_mmc_opendrain(int slot, int enable) -{ - int ret, val; - - if (slot != 1 && slot != 2) - return -EINVAL; - mutex_lock(&the_menelaus->lock); - ret = menelaus_read_reg(MENELAUS_MCT_CTRL1); - if (ret < 0) { - mutex_unlock(&the_menelaus->lock); - return ret; - } - val = ret; - if (slot == 1) { - if (enable) - val |= 1 << 2; - else - val &= ~(1 << 2); - } else { - if (enable) - val |= 1 << 3; - else - val &= ~(1 << 3); - } - ret = menelaus_write_reg(MENELAUS_MCT_CTRL1, val); - mutex_unlock(&the_menelaus->lock); - - return ret; -} -EXPORT_SYMBOL(menelaus_set_mmc_opendrain); - -int menelaus_set_slot_sel(int enable) -{ - int ret; - - mutex_lock(&the_menelaus->lock); - ret = menelaus_read_reg(MENELAUS_GPIO_CTRL); - if (ret < 0) - goto out; - ret |= 0x02; - if (enable) - ret |= 1 << 5; - else - ret &= ~(1 << 5); - ret = menelaus_write_reg(MENELAUS_GPIO_CTRL, ret); -out: - mutex_unlock(&the_menelaus->lock); - return ret; -} -EXPORT_SYMBOL(menelaus_set_slot_sel); - -int menelaus_set_mmc_slot(int slot, int enable, int power, int cd_en) -{ - int ret, val; - - if (slot != 1 && slot != 2) - return -EINVAL; - if (power >= 3) - return -EINVAL; - - mutex_lock(&the_menelaus->lock); - - ret = menelaus_read_reg(MENELAUS_MCT_CTRL2); - if (ret < 0) - goto out; - val = ret; - if (slot == 1) { - if (cd_en) - val |= (1 << 4) | (1 << 6); - else - val &= ~((1 << 4) | (1 << 6)); - } else { - if (cd_en) - val |= (1 << 5) | (1 << 7); - else - val &= ~((1 << 5) | (1 << 7)); - } - ret = menelaus_write_reg(MENELAUS_MCT_CTRL2, val); - if (ret < 0) - goto out; - - ret = menelaus_read_reg(MENELAUS_MCT_CTRL3); - if (ret < 0) - goto out; - val = ret; - if (slot == 1) { - if (enable) - val |= 1 << 0; - else - val &= ~(1 << 0); - } else { - int b; - - if (enable) - ret |= 1 << 1; - else - ret &= ~(1 << 1); - b = menelaus_read_reg(MENELAUS_MCT_CTRL2); - b &= ~0x03; - b |= power; - ret = menelaus_write_reg(MENELAUS_MCT_CTRL2, b); - if (ret < 0) - goto out; - } - /* Disable autonomous shutdown */ - val &= ~(0x03 << 2); - ret = menelaus_write_reg(MENELAUS_MCT_CTRL3, val); -out: - mutex_unlock(&the_menelaus->lock); - return ret; -} -EXPORT_SYMBOL(menelaus_set_mmc_slot); - -int menelaus_register_mmc_callback(void (*callback)(void *data, u8 card_mask), - void *data) -{ - int ret = 0; - - the_menelaus->mmc_callback_data = data; - the_menelaus->mmc_callback = callback; - ret = menelaus_add_irq_work(MENELAUS_MMC_S1CD_IRQ, - menelaus_mmc_cd_work); - if (ret < 0) - return ret; - ret = menelaus_add_irq_work(MENELAUS_MMC_S2CD_IRQ, - menelaus_mmc_cd_work); - if (ret < 0) - return ret; - ret = menelaus_add_irq_work(MENELAUS_MMC_S1D1_IRQ, - menelaus_mmc_cd_work); - if (ret < 0) - return ret; - ret = menelaus_add_irq_work(MENELAUS_MMC_S2D1_IRQ, - menelaus_mmc_cd_work); - - return ret; -} -EXPORT_SYMBOL(menelaus_register_mmc_callback); - -void menelaus_unregister_mmc_callback(void) -{ - menelaus_remove_irq_work(MENELAUS_MMC_S1CD_IRQ); - menelaus_remove_irq_work(MENELAUS_MMC_S2CD_IRQ); - menelaus_remove_irq_work(MENELAUS_MMC_S1D1_IRQ); - menelaus_remove_irq_work(MENELAUS_MMC_S2D1_IRQ); - - the_menelaus->mmc_callback = NULL; - the_menelaus->mmc_callback_data = 0; -} -EXPORT_SYMBOL(menelaus_unregister_mmc_callback); - -struct menelaus_vtg { - const char *name; - u8 vtg_reg; - u8 vtg_shift; - u8 vtg_bits; - u8 mode_reg; -}; - -struct menelaus_vtg_value { - u16 vtg; - u16 val; -}; - -static int menelaus_set_voltage(const struct menelaus_vtg *vtg, int mV, - int vtg_val, int mode) -{ - int val, ret; - struct i2c_client *c = the_menelaus->client; - - mutex_lock(&the_menelaus->lock); - if (vtg == 0) - goto set_voltage; - - ret = menelaus_read_reg(vtg->vtg_reg); - if (ret < 0) - goto out; - val = ret & ~(((1 << vtg->vtg_bits) - 1) << vtg->vtg_shift); - val |= vtg_val << vtg->vtg_shift; - - dev_dbg(&c->dev, "Setting voltage '%s'" - "to %d mV (reg 0x%02x, val 0x%02x)\n", - vtg->name, mV, vtg->vtg_reg, val); - - ret = menelaus_write_reg(vtg->vtg_reg, val); - if (ret < 0) - goto out; -set_voltage: - ret = menelaus_write_reg(vtg->mode_reg, mode); -out: - mutex_unlock(&the_menelaus->lock); - if (ret == 0) { - /* Wait for voltage to stabilize */ - msleep(1); - } - return ret; -} - -static int menelaus_get_vtg_value(int vtg, const struct menelaus_vtg_value *tbl, - int n) -{ - int i; - - for (i = 0; i < n; i++, tbl++) - if (tbl->vtg == vtg) - return tbl->val; - return -EINVAL; -} - -/* - * Vcore can be programmed in two ways: - * SW-controlled: Required voltage is programmed into VCORE_CTRL1 - * HW-controlled: Required range (roof-floor) is programmed into VCORE_CTRL3 - * and VCORE_CTRL4 - * - * Call correct 'set' function accordingly - */ - -static const struct menelaus_vtg_value vcore_values[] = { - { 1000, 0 }, - { 1025, 1 }, - { 1050, 2 }, - { 1075, 3 }, - { 1100, 4 }, - { 1125, 5 }, - { 1150, 6 }, - { 1175, 7 }, - { 1200, 8 }, - { 1225, 9 }, - { 1250, 10 }, - { 1275, 11 }, - { 1300, 12 }, - { 1325, 13 }, - { 1350, 14 }, - { 1375, 15 }, - { 1400, 16 }, - { 1425, 17 }, - { 1450, 18 }, -}; - -int menelaus_set_vcore_sw(unsigned int mV) -{ - int val, ret; - struct i2c_client *c = the_menelaus->client; - - val = menelaus_get_vtg_value(mV, vcore_values, - ARRAY_SIZE(vcore_values)); - if (val < 0) - return -EINVAL; - - dev_dbg(&c->dev, "Setting VCORE to %d mV (val 0x%02x)\n", mV, val); - - /* Set SW mode and the voltage in one go. */ - mutex_lock(&the_menelaus->lock); - ret = menelaus_write_reg(MENELAUS_VCORE_CTRL1, val); - if (ret == 0) - the_menelaus->vcore_hw_mode = 0; - mutex_unlock(&the_menelaus->lock); - msleep(1); - - return ret; -} - -int menelaus_set_vcore_hw(unsigned int roof_mV, unsigned int floor_mV) -{ - int fval, rval, val, ret; - struct i2c_client *c = the_menelaus->client; - - rval = menelaus_get_vtg_value(roof_mV, vcore_values, - ARRAY_SIZE(vcore_values)); - if (rval < 0) - return -EINVAL; - fval = menelaus_get_vtg_value(floor_mV, vcore_values, - ARRAY_SIZE(vcore_values)); - if (fval < 0) - return -EINVAL; - - dev_dbg(&c->dev, "Setting VCORE FLOOR to %d mV and ROOF to %d mV\n", - floor_mV, roof_mV); - - mutex_lock(&the_menelaus->lock); - ret = menelaus_write_reg(MENELAUS_VCORE_CTRL3, fval); - if (ret < 0) - goto out; - ret = menelaus_write_reg(MENELAUS_VCORE_CTRL4, rval); - if (ret < 0) - goto out; - if (!the_menelaus->vcore_hw_mode) { - val = menelaus_read_reg(MENELAUS_VCORE_CTRL1); - /* HW mode, turn OFF byte comparator */ - val |= ((1 << 7) | (1 << 5)); - ret = menelaus_write_reg(MENELAUS_VCORE_CTRL1, val); - the_menelaus->vcore_hw_mode = 1; - } - msleep(1); -out: - mutex_unlock(&the_menelaus->lock); - return ret; -} - -static const struct menelaus_vtg vmem_vtg = { - .name = "VMEM", - .vtg_reg = MENELAUS_LDO_CTRL1, - .vtg_shift = 0, - .vtg_bits = 2, - .mode_reg = MENELAUS_LDO_CTRL3, -}; - -static const struct menelaus_vtg_value vmem_values[] = { - { 1500, 0 }, - { 1800, 1 }, - { 1900, 2 }, - { 2500, 3 }, -}; - -int menelaus_set_vmem(unsigned int mV) -{ - int val; - - if (mV == 0) - return menelaus_set_voltage(&vmem_vtg, 0, 0, 0); - - val = menelaus_get_vtg_value(mV, vmem_values, ARRAY_SIZE(vmem_values)); - if (val < 0) - return -EINVAL; - return menelaus_set_voltage(&vmem_vtg, mV, val, 0x02); -} -EXPORT_SYMBOL(menelaus_set_vmem); - -static const struct menelaus_vtg vio_vtg = { - .name = "VIO", - .vtg_reg = MENELAUS_LDO_CTRL1, - .vtg_shift = 2, - .vtg_bits = 2, - .mode_reg = MENELAUS_LDO_CTRL4, -}; - -static const struct menelaus_vtg_value vio_values[] = { - { 1500, 0 }, - { 1800, 1 }, - { 2500, 2 }, - { 2800, 3 }, -}; - -int menelaus_set_vio(unsigned int mV) -{ - int val; - - if (mV == 0) - return menelaus_set_voltage(&vio_vtg, 0, 0, 0); - - val = menelaus_get_vtg_value(mV, vio_values, ARRAY_SIZE(vio_values)); - if (val < 0) - return -EINVAL; - return menelaus_set_voltage(&vio_vtg, mV, val, 0x02); -} -EXPORT_SYMBOL(menelaus_set_vio); - -static const struct menelaus_vtg_value vdcdc_values[] = { - { 1500, 0 }, - { 1800, 1 }, - { 2000, 2 }, - { 2200, 3 }, - { 2400, 4 }, - { 2800, 5 }, - { 3000, 6 }, - { 3300, 7 }, -}; - -static const struct menelaus_vtg vdcdc2_vtg = { - .name = "VDCDC2", - .vtg_reg = MENELAUS_DCDC_CTRL1, - .vtg_shift = 0, - .vtg_bits = 3, - .mode_reg = MENELAUS_DCDC_CTRL2, -}; - -static const struct menelaus_vtg vdcdc3_vtg = { - .name = "VDCDC3", - .vtg_reg = MENELAUS_DCDC_CTRL1, - .vtg_shift = 3, - .vtg_bits = 3, - .mode_reg = MENELAUS_DCDC_CTRL3, -}; - -int menelaus_set_vdcdc(int dcdc, unsigned int mV) -{ - const struct menelaus_vtg *vtg; - int val; - - if (dcdc != 2 && dcdc != 3) - return -EINVAL; - if (dcdc == 2) - vtg = &vdcdc2_vtg; - else - vtg = &vdcdc3_vtg; - - if (mV == 0) - return menelaus_set_voltage(vtg, 0, 0, 0); - - val = menelaus_get_vtg_value(mV, vdcdc_values, - ARRAY_SIZE(vdcdc_values)); - if (val < 0) - return -EINVAL; - return menelaus_set_voltage(vtg, mV, val, 0x03); -} - -static const struct menelaus_vtg_value vmmc_values[] = { - { 1850, 0 }, - { 2800, 1 }, - { 3000, 2 }, - { 3100, 3 }, -}; - -static const struct menelaus_vtg vmmc_vtg = { - .name = "VMMC", - .vtg_reg = MENELAUS_LDO_CTRL1, - .vtg_shift = 6, - .vtg_bits = 2, - .mode_reg = MENELAUS_LDO_CTRL7, -}; - -int menelaus_set_vmmc(unsigned int mV) -{ - int val; - - if (mV == 0) - return menelaus_set_voltage(&vmmc_vtg, 0, 0, 0); - - val = menelaus_get_vtg_value(mV, vmmc_values, ARRAY_SIZE(vmmc_values)); - if (val < 0) - return -EINVAL; - return menelaus_set_voltage(&vmmc_vtg, mV, val, 0x02); -} -EXPORT_SYMBOL(menelaus_set_vmmc); - - -static const struct menelaus_vtg_value vaux_values[] = { - { 1500, 0 }, - { 1800, 1 }, - { 2500, 2 }, - { 2800, 3 }, -}; - -static const struct menelaus_vtg vaux_vtg = { - .name = "VAUX", - .vtg_reg = MENELAUS_LDO_CTRL1, - .vtg_shift = 4, - .vtg_bits = 2, - .mode_reg = MENELAUS_LDO_CTRL6, -}; - -int menelaus_set_vaux(unsigned int mV) -{ - int val; - - if (mV == 0) - return menelaus_set_voltage(&vaux_vtg, 0, 0, 0); - - val = menelaus_get_vtg_value(mV, vaux_values, ARRAY_SIZE(vaux_values)); - if (val < 0) - return -EINVAL; - return menelaus_set_voltage(&vaux_vtg, mV, val, 0x02); -} -EXPORT_SYMBOL(menelaus_set_vaux); - -int menelaus_get_slot_pin_states(void) -{ - return menelaus_read_reg(MENELAUS_MCT_PIN_ST); -} -EXPORT_SYMBOL(menelaus_get_slot_pin_states); - -int menelaus_set_regulator_sleep(int enable, u32 val) -{ - int t, ret; - struct i2c_client *c = the_menelaus->client; - - mutex_lock(&the_menelaus->lock); - ret = menelaus_write_reg(MENELAUS_SLEEP_CTRL2, val); - if (ret < 0) - goto out; - - dev_dbg(&c->dev, "regulator sleep configuration: %02x\n", val); - - ret = menelaus_read_reg(MENELAUS_GPIO_CTRL); - if (ret < 0) - goto out; - t = ((1 << 6) | 0x04); - if (enable) - ret |= t; - else - ret &= ~t; - ret = menelaus_write_reg(MENELAUS_GPIO_CTRL, ret); -out: - mutex_unlock(&the_menelaus->lock); - return ret; -} - -/*-----------------------------------------------------------------------*/ - -/* Handles Menelaus interrupts. Does not run in interrupt context */ -static void menelaus_work(struct work_struct *_menelaus) -{ - struct menelaus_chip *menelaus = - container_of(_menelaus, struct menelaus_chip, work); - void (*handler)(struct menelaus_chip *menelaus); - - while (1) { - unsigned isr; - - isr = (menelaus_read_reg(MENELAUS_INT_STATUS2) - & ~menelaus->mask2) << 8; - isr |= menelaus_read_reg(MENELAUS_INT_STATUS1) - & ~menelaus->mask1; - if (!isr) - break; - - while (isr) { - int irq = fls(isr) - 1; - isr &= ~(1 << irq); - - mutex_lock(&menelaus->lock); - menelaus_disable_irq(irq); - menelaus_ack_irq(irq); - handler = menelaus->handlers[irq]; - if (handler) - handler(menelaus); - menelaus_enable_irq(irq); - mutex_unlock(&menelaus->lock); - } - } - enable_irq(menelaus->client->irq); -} - -/* - * We cannot use I2C in interrupt context, so we just schedule work. - */ -static irqreturn_t menelaus_irq(int irq, void *_menelaus) -{ - struct menelaus_chip *menelaus = _menelaus; - - disable_irq_nosync(irq); - (void)schedule_work(&menelaus->work); - - return IRQ_HANDLED; -} - -/*-----------------------------------------------------------------------*/ - -/* - * The RTC needs to be set once, then it runs on backup battery power. - * It supports alarms, including system wake alarms (from some modes); - * and 1/second IRQs if requested. - */ -#ifdef CONFIG_RTC_DRV_TWL92330 - -#define RTC_CTRL_RTC_EN (1 << 0) -#define RTC_CTRL_AL_EN (1 << 1) -#define RTC_CTRL_MODE12 (1 << 2) -#define RTC_CTRL_EVERY_MASK (3 << 3) -#define RTC_CTRL_EVERY_SEC (0 << 3) -#define RTC_CTRL_EVERY_MIN (1 << 3) -#define RTC_CTRL_EVERY_HR (2 << 3) -#define RTC_CTRL_EVERY_DAY (3 << 3) - -#define RTC_UPDATE_EVERY 0x08 - -#define RTC_HR_PM (1 << 7) - -static void menelaus_to_time(char *regs, struct rtc_time *t) -{ - t->tm_sec = bcd2bin(regs[0]); - t->tm_min = bcd2bin(regs[1]); - if (the_menelaus->rtc_control & RTC_CTRL_MODE12) { - t->tm_hour = bcd2bin(regs[2] & 0x1f) - 1; - if (regs[2] & RTC_HR_PM) - t->tm_hour += 12; - } else - t->tm_hour = bcd2bin(regs[2] & 0x3f); - t->tm_mday = bcd2bin(regs[3]); - t->tm_mon = bcd2bin(regs[4]) - 1; - t->tm_year = bcd2bin(regs[5]) + 100; -} - -static int time_to_menelaus(struct rtc_time *t, int regnum) -{ - int hour, status; - - status = menelaus_write_reg(regnum++, bin2bcd(t->tm_sec)); - if (status < 0) - goto fail; - - status = menelaus_write_reg(regnum++, bin2bcd(t->tm_min)); - if (status < 0) - goto fail; - - if (the_menelaus->rtc_control & RTC_CTRL_MODE12) { - hour = t->tm_hour + 1; - if (hour > 12) - hour = RTC_HR_PM | bin2bcd(hour - 12); - else - hour = bin2bcd(hour); - } else - hour = bin2bcd(t->tm_hour); - status = menelaus_write_reg(regnum++, hour); - if (status < 0) - goto fail; - - status = menelaus_write_reg(regnum++, bin2bcd(t->tm_mday)); - if (status < 0) - goto fail; - - status = menelaus_write_reg(regnum++, bin2bcd(t->tm_mon + 1)); - if (status < 0) - goto fail; - - status = menelaus_write_reg(regnum++, bin2bcd(t->tm_year - 100)); - if (status < 0) - goto fail; - - return 0; -fail: - dev_err(&the_menelaus->client->dev, "rtc write reg %02x, err %d\n", - --regnum, status); - return status; -} - -static int menelaus_read_time(struct device *dev, struct rtc_time *t) -{ - struct i2c_msg msg[2]; - char regs[7]; - int status; - - /* block read date and time registers */ - regs[0] = MENELAUS_RTC_SEC; - - msg[0].addr = MENELAUS_I2C_ADDRESS; - msg[0].flags = 0; - msg[0].len = 1; - msg[0].buf = regs; - - msg[1].addr = MENELAUS_I2C_ADDRESS; - msg[1].flags = I2C_M_RD; - msg[1].len = sizeof(regs); - msg[1].buf = regs; - - status = i2c_transfer(the_menelaus->client->adapter, msg, 2); - if (status != 2) { - dev_err(dev, "%s error %d\n", "read", status); - return -EIO; - } - - menelaus_to_time(regs, t); - t->tm_wday = bcd2bin(regs[6]); - - return 0; -} - -static int menelaus_set_time(struct device *dev, struct rtc_time *t) -{ - int status; - - /* write date and time registers */ - status = time_to_menelaus(t, MENELAUS_RTC_SEC); - if (status < 0) - return status; - status = menelaus_write_reg(MENELAUS_RTC_WKDAY, bin2bcd(t->tm_wday)); - if (status < 0) { - dev_err(&the_menelaus->client->dev, "rtc write reg %02x " - "err %d\n", MENELAUS_RTC_WKDAY, status); - return status; - } - - /* now commit the write */ - status = menelaus_write_reg(MENELAUS_RTC_UPDATE, RTC_UPDATE_EVERY); - if (status < 0) - dev_err(&the_menelaus->client->dev, "rtc commit time, err %d\n", - status); - - return 0; -} - -static int menelaus_read_alarm(struct device *dev, struct rtc_wkalrm *w) -{ - struct i2c_msg msg[2]; - char regs[6]; - int status; - - /* block read alarm registers */ - regs[0] = MENELAUS_RTC_AL_SEC; - - msg[0].addr = MENELAUS_I2C_ADDRESS; - msg[0].flags = 0; - msg[0].len = 1; - msg[0].buf = regs; - - msg[1].addr = MENELAUS_I2C_ADDRESS; - msg[1].flags = I2C_M_RD; - msg[1].len = sizeof(regs); - msg[1].buf = regs; - - status = i2c_transfer(the_menelaus->client->adapter, msg, 2); - if (status != 2) { - dev_err(dev, "%s error %d\n", "alarm read", status); - return -EIO; - } - - menelaus_to_time(regs, &w->time); - - w->enabled = !!(the_menelaus->rtc_control & RTC_CTRL_AL_EN); - - /* NOTE we *could* check if actually pending... */ - w->pending = 0; - - return 0; -} - -static int menelaus_set_alarm(struct device *dev, struct rtc_wkalrm *w) -{ - int status; - - if (the_menelaus->client->irq <= 0 && w->enabled) - return -ENODEV; - - /* clear previous alarm enable */ - if (the_menelaus->rtc_control & RTC_CTRL_AL_EN) { - the_menelaus->rtc_control &= ~RTC_CTRL_AL_EN; - status = menelaus_write_reg(MENELAUS_RTC_CTRL, - the_menelaus->rtc_control); - if (status < 0) - return status; - } - - /* write alarm registers */ - status = time_to_menelaus(&w->time, MENELAUS_RTC_AL_SEC); - if (status < 0) - return status; - - /* enable alarm if requested */ - if (w->enabled) { - the_menelaus->rtc_control |= RTC_CTRL_AL_EN; - status = menelaus_write_reg(MENELAUS_RTC_CTRL, - the_menelaus->rtc_control); - } - - return status; -} - -#ifdef CONFIG_RTC_INTF_DEV - -static void menelaus_rtc_update_work(struct menelaus_chip *m) -{ - /* report 1/sec update */ - local_irq_disable(); - rtc_update_irq(m->rtc, 1, RTC_IRQF | RTC_UF); - local_irq_enable(); -} - -static int menelaus_ioctl(struct device *dev, unsigned cmd, unsigned long arg) -{ - int status; - - if (the_menelaus->client->irq <= 0) - return -ENOIOCTLCMD; - - switch (cmd) { - /* alarm IRQ */ - case RTC_AIE_ON: - if (the_menelaus->rtc_control & RTC_CTRL_AL_EN) - return 0; - the_menelaus->rtc_control |= RTC_CTRL_AL_EN; - break; - case RTC_AIE_OFF: - if (!(the_menelaus->rtc_control & RTC_CTRL_AL_EN)) - return 0; - the_menelaus->rtc_control &= ~RTC_CTRL_AL_EN; - break; - /* 1/second "update" IRQ */ - case RTC_UIE_ON: - if (the_menelaus->uie) - return 0; - status = menelaus_remove_irq_work(MENELAUS_RTCTMR_IRQ); - status = menelaus_add_irq_work(MENELAUS_RTCTMR_IRQ, - menelaus_rtc_update_work); - if (status == 0) - the_menelaus->uie = 1; - return status; - case RTC_UIE_OFF: - if (!the_menelaus->uie) - return 0; - status = menelaus_remove_irq_work(MENELAUS_RTCTMR_IRQ); - if (status == 0) - the_menelaus->uie = 0; - return status; - default: - return -ENOIOCTLCMD; - } - return menelaus_write_reg(MENELAUS_RTC_CTRL, the_menelaus->rtc_control); -} - -#else -#define menelaus_ioctl NULL -#endif - -/* REVISIT no compensation register support ... */ - -static const struct rtc_class_ops menelaus_rtc_ops = { - .ioctl = menelaus_ioctl, - .read_time = menelaus_read_time, - .set_time = menelaus_set_time, - .read_alarm = menelaus_read_alarm, - .set_alarm = menelaus_set_alarm, -}; - -static void menelaus_rtc_alarm_work(struct menelaus_chip *m) -{ - /* report alarm */ - local_irq_disable(); - rtc_update_irq(m->rtc, 1, RTC_IRQF | RTC_AF); - local_irq_enable(); - - /* then disable it; alarms are oneshot */ - the_menelaus->rtc_control &= ~RTC_CTRL_AL_EN; - menelaus_write_reg(MENELAUS_RTC_CTRL, the_menelaus->rtc_control); -} - -static inline void menelaus_rtc_init(struct menelaus_chip *m) -{ - int alarm = (m->client->irq > 0); - - /* assume 32KDETEN pin is pulled high */ - if (!(menelaus_read_reg(MENELAUS_OSC_CTRL) & 0x80)) { - dev_dbg(&m->client->dev, "no 32k oscillator\n"); - return; - } - - /* support RTC alarm; it can issue wakeups */ - if (alarm) { - if (menelaus_add_irq_work(MENELAUS_RTCALM_IRQ, - menelaus_rtc_alarm_work) < 0) { - dev_err(&m->client->dev, "can't handle RTC alarm\n"); - return; - } - device_init_wakeup(&m->client->dev, 1); - } - - /* be sure RTC is enabled; allow 1/sec irqs; leave 12hr mode alone */ - m->rtc_control = menelaus_read_reg(MENELAUS_RTC_CTRL); - if (!(m->rtc_control & RTC_CTRL_RTC_EN) - || (m->rtc_control & RTC_CTRL_AL_EN) - || (m->rtc_control & RTC_CTRL_EVERY_MASK)) { - if (!(m->rtc_control & RTC_CTRL_RTC_EN)) { - dev_warn(&m->client->dev, "rtc clock needs setting\n"); - m->rtc_control |= RTC_CTRL_RTC_EN; - } - m->rtc_control &= ~RTC_CTRL_EVERY_MASK; - m->rtc_control &= ~RTC_CTRL_AL_EN; - menelaus_write_reg(MENELAUS_RTC_CTRL, m->rtc_control); - } - - m->rtc = rtc_device_register(DRIVER_NAME, - &m->client->dev, - &menelaus_rtc_ops, THIS_MODULE); - if (IS_ERR(m->rtc)) { - if (alarm) { - menelaus_remove_irq_work(MENELAUS_RTCALM_IRQ); - device_init_wakeup(&m->client->dev, 0); - } - dev_err(&m->client->dev, "can't register RTC: %d\n", - (int) PTR_ERR(m->rtc)); - the_menelaus->rtc = NULL; - } -} - -#else - -static inline void menelaus_rtc_init(struct menelaus_chip *m) -{ - /* nothing */ -} - -#endif - -/*-----------------------------------------------------------------------*/ - -static struct i2c_driver menelaus_i2c_driver; - -static int menelaus_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct menelaus_chip *menelaus; - int rev = 0, val; - int err = 0; - struct menelaus_platform_data *menelaus_pdata = - client->dev.platform_data; - - if (the_menelaus) { - dev_dbg(&client->dev, "only one %s for now\n", - DRIVER_NAME); - return -ENODEV; - } - - menelaus = kzalloc(sizeof *menelaus, GFP_KERNEL); - if (!menelaus) - return -ENOMEM; - - i2c_set_clientdata(client, menelaus); - - the_menelaus = menelaus; - menelaus->client = client; - - /* If a true probe check the device */ - rev = menelaus_read_reg(MENELAUS_REV); - if (rev < 0) { - pr_err(DRIVER_NAME ": device not found"); - err = -ENODEV; - goto fail1; - } - - /* Ack and disable all Menelaus interrupts */ - menelaus_write_reg(MENELAUS_INT_ACK1, 0xff); - menelaus_write_reg(MENELAUS_INT_ACK2, 0xff); - menelaus_write_reg(MENELAUS_INT_MASK1, 0xff); - menelaus_write_reg(MENELAUS_INT_MASK2, 0xff); - menelaus->mask1 = 0xff; - menelaus->mask2 = 0xff; - - /* Set output buffer strengths */ - menelaus_write_reg(MENELAUS_MCT_CTRL1, 0x73); - - if (client->irq > 0) { - err = request_irq(client->irq, menelaus_irq, IRQF_DISABLED, - DRIVER_NAME, menelaus); - if (err) { - dev_dbg(&client->dev, "can't get IRQ %d, err %d\n", - client->irq, err); - goto fail1; - } - } - - mutex_init(&menelaus->lock); - INIT_WORK(&menelaus->work, menelaus_work); - - pr_info("Menelaus rev %d.%d\n", rev >> 4, rev & 0x0f); - - val = menelaus_read_reg(MENELAUS_VCORE_CTRL1); - if (val < 0) - goto fail2; - if (val & (1 << 7)) - menelaus->vcore_hw_mode = 1; - else - menelaus->vcore_hw_mode = 0; - - if (menelaus_pdata != NULL && menelaus_pdata->late_init != NULL) { - err = menelaus_pdata->late_init(&client->dev); - if (err < 0) - goto fail2; - } - - menelaus_rtc_init(menelaus); - - return 0; -fail2: - free_irq(client->irq, menelaus); - flush_scheduled_work(); -fail1: - kfree(menelaus); - return err; -} - -static int __exit menelaus_remove(struct i2c_client *client) -{ - struct menelaus_chip *menelaus = i2c_get_clientdata(client); - - free_irq(client->irq, menelaus); - kfree(menelaus); - i2c_set_clientdata(client, NULL); - the_menelaus = NULL; - return 0; -} - -static const struct i2c_device_id menelaus_id[] = { - { "menelaus", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, menelaus_id); - -static struct i2c_driver menelaus_i2c_driver = { - .driver = { - .name = DRIVER_NAME, - }, - .probe = menelaus_probe, - .remove = __exit_p(menelaus_remove), - .id_table = menelaus_id, -}; - -static int __init menelaus_init(void) -{ - int res; - - res = i2c_add_driver(&menelaus_i2c_driver); - if (res < 0) { - pr_err(DRIVER_NAME ": driver registration failed\n"); - return res; - } - - return 0; -} - -static void __exit menelaus_exit(void) -{ - i2c_del_driver(&menelaus_i2c_driver); - - /* FIXME: Shutdown menelaus parts that can be shut down */ -} - -MODULE_AUTHOR("Texas Instruments, Inc. (and others)"); -MODULE_DESCRIPTION("I2C interface for Menelaus."); -MODULE_LICENSE("GPL"); - -module_init(menelaus_init); -module_exit(menelaus_exit); |