misc: Add driver support for MAX8997 MUIC
The MUIC function in MAX8997 device can be used as a USB port detector and switch. This patch supports the MUIC feature of MAX8997. Signed-off-by: Donggeun Kim <dg77.kim@samsung.com> Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Donggeun Kim
Samuel Ortiz
Родитель
2439d9714e
Коммит
99f09bebbe
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@ -500,6 +500,14 @@ config USB_SWITCH_FSA9480
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stereo and mono audio, video, microphone and UART data to use
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a common connector port.
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config MAX8997_MUIC
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tristate "MAX8997 MUIC Support"
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depends on MFD_MAX8997
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help
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If you say yes here you get support for the MUIC device of
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Maxim MAX8997 PMIC.
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The MAX8997 MUIC is a USB port accessory detector and switch.
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source "drivers/misc/c2port/Kconfig"
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source "drivers/misc/eeprom/Kconfig"
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source "drivers/misc/cb710/Kconfig"
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@ -48,3 +48,4 @@ obj-y += lis3lv02d/
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obj-y += carma/
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obj-$(CONFIG_USB_SWITCH_FSA9480) += fsa9480.o
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obj-$(CONFIG_ALTERA_STAPL) +=altera-stapl/
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obj-$(CONFIG_MAX8997_MUIC) += max8997-muic.o
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@ -0,0 +1,634 @@
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/*
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* max8997-muic.c - MAX8997 muic driver for the Maxim 8997
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*
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* Copyright (C) 2011 Samsung Electrnoics
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* Donggeun Kim <dg77.kim@samsung.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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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/kobject.h>
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#include <linux/mfd/max8997.h>
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#include <linux/mfd/max8997-private.h>
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/* MAX8997-MUIC STATUS1 register */
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#define STATUS1_ADC_SHIFT 0
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#define STATUS1_ADCLOW_SHIFT 5
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#define STATUS1_ADCERR_SHIFT 6
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#define STATUS1_ADC_MASK (0x1f << STATUS1_ADC_SHIFT)
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#define STATUS1_ADCLOW_MASK (0x1 << STATUS1_ADCLOW_SHIFT)
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#define STATUS1_ADCERR_MASK (0x1 << STATUS1_ADCERR_SHIFT)
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/* MAX8997-MUIC STATUS2 register */
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#define STATUS2_CHGTYP_SHIFT 0
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#define STATUS2_CHGDETRUN_SHIFT 3
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#define STATUS2_DCDTMR_SHIFT 4
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#define STATUS2_DBCHG_SHIFT 5
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#define STATUS2_VBVOLT_SHIFT 6
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#define STATUS2_CHGTYP_MASK (0x7 << STATUS2_CHGTYP_SHIFT)
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#define STATUS2_CHGDETRUN_MASK (0x1 << STATUS2_CHGDETRUN_SHIFT)
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#define STATUS2_DCDTMR_MASK (0x1 << STATUS2_DCDTMR_SHIFT)
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#define STATUS2_DBCHG_MASK (0x1 << STATUS2_DBCHG_SHIFT)
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#define STATUS2_VBVOLT_MASK (0x1 << STATUS2_VBVOLT_SHIFT)
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/* MAX8997-MUIC STATUS3 register */
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#define STATUS3_OVP_SHIFT 2
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#define STATUS3_OVP_MASK (0x1 << STATUS3_OVP_SHIFT)
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/* MAX8997-MUIC CONTROL1 register */
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#define COMN1SW_SHIFT 0
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#define COMP2SW_SHIFT 3
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#define COMN1SW_MASK (0x7 << COMN1SW_SHIFT)
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#define COMP2SW_MASK (0x7 << COMP2SW_SHIFT)
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#define SW_MASK (COMP2SW_MASK | COMN1SW_MASK)
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#define MAX8997_SW_USB ((1 << COMP2SW_SHIFT) | (1 << COMN1SW_SHIFT))
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#define MAX8997_SW_AUDIO ((2 << COMP2SW_SHIFT) | (2 << COMN1SW_SHIFT))
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#define MAX8997_SW_UART ((3 << COMP2SW_SHIFT) | (3 << COMN1SW_SHIFT))
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#define MAX8997_SW_OPEN ((0 << COMP2SW_SHIFT) | (0 << COMN1SW_SHIFT))
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#define MAX8997_ADC_GROUND 0x00
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#define MAX8997_ADC_MHL 0x01
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#define MAX8997_ADC_JIG_USB_1 0x18
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#define MAX8997_ADC_JIG_USB_2 0x19
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#define MAX8997_ADC_DESKDOCK 0x1a
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#define MAX8997_ADC_JIG_UART 0x1c
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#define MAX8997_ADC_CARDOCK 0x1d
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#define MAX8997_ADC_OPEN 0x1f
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struct max8997_muic_irq {
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unsigned int irq;
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const char *name;
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};
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static struct max8997_muic_irq muic_irqs[] = {
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{ MAX8997_MUICIRQ_ADCError, "muic-ADC_error" },
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{ MAX8997_MUICIRQ_ADCLow, "muic-ADC_low" },
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{ MAX8997_MUICIRQ_ADC, "muic-ADC" },
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{ MAX8997_MUICIRQ_VBVolt, "muic-VB_voltage" },
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{ MAX8997_MUICIRQ_DBChg, "muic-DB_charger" },
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{ MAX8997_MUICIRQ_DCDTmr, "muic-DCD_timer" },
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{ MAX8997_MUICIRQ_ChgDetRun, "muic-CDR_status" },
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{ MAX8997_MUICIRQ_ChgTyp, "muic-charger_type" },
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{ MAX8997_MUICIRQ_OVP, "muic-over_voltage" },
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};
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struct max8997_muic_info {
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struct device *dev;
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struct max8997_dev *iodev;
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struct i2c_client *muic;
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struct max8997_muic_platform_data *muic_pdata;
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int irq;
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struct work_struct irq_work;
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enum max8997_muic_charger_type pre_charger_type;
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int pre_adc;
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struct mutex mutex;
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};
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static int max8997_muic_handle_usb(struct max8997_muic_info *info,
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enum max8997_muic_usb_type usb_type, bool attached)
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{
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struct max8997_muic_platform_data *mdata = info->muic_pdata;
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int ret = 0;
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if (usb_type == MAX8997_USB_HOST) {
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/* switch to USB */
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ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1,
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attached ? MAX8997_SW_USB : MAX8997_SW_OPEN,
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SW_MASK);
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if (ret) {
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dev_err(info->dev, "failed to update muic register\n");
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goto out;
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}
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}
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if (mdata->usb_callback)
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mdata->usb_callback(usb_type, attached);
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out:
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return ret;
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}
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static void max8997_muic_handle_mhl(struct max8997_muic_info *info,
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bool attached)
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{
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struct max8997_muic_platform_data *mdata = info->muic_pdata;
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if (mdata->mhl_callback)
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mdata->mhl_callback(attached);
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}
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static int max8997_muic_handle_dock(struct max8997_muic_info *info,
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int adc, bool attached)
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{
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struct max8997_muic_platform_data *mdata = info->muic_pdata;
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int ret = 0;
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/* switch to AUDIO */
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ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1,
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attached ? MAX8997_SW_AUDIO : MAX8997_SW_OPEN,
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SW_MASK);
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if (ret) {
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dev_err(info->dev, "failed to update muic register\n");
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goto out;
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}
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switch (adc) {
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case MAX8997_ADC_DESKDOCK:
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if (mdata->deskdock_callback)
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mdata->deskdock_callback(attached);
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break;
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case MAX8997_ADC_CARDOCK:
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if (mdata->cardock_callback)
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mdata->cardock_callback(attached);
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break;
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default:
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break;
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}
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out:
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return ret;
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}
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static int max8997_muic_handle_jig_uart(struct max8997_muic_info *info,
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bool attached)
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{
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struct max8997_muic_platform_data *mdata = info->muic_pdata;
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int ret = 0;
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/* switch to UART */
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ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1,
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attached ? MAX8997_SW_UART : MAX8997_SW_OPEN,
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SW_MASK);
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if (ret) {
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dev_err(info->dev, "failed to update muic register\n");
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goto out;
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}
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if (mdata->uart_callback)
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mdata->uart_callback(attached);
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out:
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return ret;
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}
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static int max8997_muic_handle_adc_detach(struct max8997_muic_info *info)
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{
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int ret = 0;
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switch (info->pre_adc) {
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case MAX8997_ADC_GROUND:
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ret = max8997_muic_handle_usb(info, MAX8997_USB_HOST, false);
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break;
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case MAX8997_ADC_MHL:
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max8997_muic_handle_mhl(info, false);
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break;
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case MAX8997_ADC_JIG_USB_1:
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case MAX8997_ADC_JIG_USB_2:
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ret = max8997_muic_handle_usb(info, MAX8997_USB_DEVICE, false);
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break;
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case MAX8997_ADC_DESKDOCK:
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case MAX8997_ADC_CARDOCK:
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ret = max8997_muic_handle_dock(info, info->pre_adc, false);
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break;
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case MAX8997_ADC_JIG_UART:
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ret = max8997_muic_handle_jig_uart(info, false);
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break;
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default:
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break;
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}
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return ret;
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}
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static int max8997_muic_handle_adc(struct max8997_muic_info *info, int adc)
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{
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int ret = 0;
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switch (adc) {
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case MAX8997_ADC_GROUND:
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ret = max8997_muic_handle_usb(info, MAX8997_USB_HOST, true);
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break;
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case MAX8997_ADC_MHL:
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max8997_muic_handle_mhl(info, true);
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break;
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case MAX8997_ADC_JIG_USB_1:
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case MAX8997_ADC_JIG_USB_2:
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ret = max8997_muic_handle_usb(info, MAX8997_USB_DEVICE, true);
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break;
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case MAX8997_ADC_DESKDOCK:
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case MAX8997_ADC_CARDOCK:
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ret = max8997_muic_handle_dock(info, adc, true);
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break;
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case MAX8997_ADC_JIG_UART:
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ret = max8997_muic_handle_jig_uart(info, true);
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break;
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case MAX8997_ADC_OPEN:
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ret = max8997_muic_handle_adc_detach(info);
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break;
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default:
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break;
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}
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info->pre_adc = adc;
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return ret;
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}
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static int max8997_muic_handle_charger_type(struct max8997_muic_info *info,
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enum max8997_muic_charger_type charger_type)
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{
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struct max8997_muic_platform_data *mdata = info->muic_pdata;
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u8 adc;
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int ret;
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ret = max8997_read_reg(info->muic, MAX8997_MUIC_REG_STATUS1, &adc);
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if (ret) {
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dev_err(info->dev, "failed to read muic register\n");
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goto out;
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}
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switch (charger_type) {
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case MAX8997_CHARGER_TYPE_NONE:
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if (mdata->charger_callback)
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mdata->charger_callback(false, charger_type);
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if (info->pre_charger_type == MAX8997_CHARGER_TYPE_USB) {
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max8997_muic_handle_usb(info,
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MAX8997_USB_DEVICE, false);
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}
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break;
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case MAX8997_CHARGER_TYPE_USB:
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if ((adc & STATUS1_ADC_MASK) == MAX8997_ADC_OPEN) {
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max8997_muic_handle_usb(info,
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MAX8997_USB_DEVICE, true);
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}
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if (mdata->charger_callback)
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mdata->charger_callback(true, charger_type);
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break;
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case MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT:
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case MAX8997_CHARGER_TYPE_DEDICATED_CHG:
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case MAX8997_CHARGER_TYPE_500MA:
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case MAX8997_CHARGER_TYPE_1A:
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if (mdata->charger_callback)
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mdata->charger_callback(true, charger_type);
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break;
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default:
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break;
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}
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info->pre_charger_type = charger_type;
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out:
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return ret;
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}
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static void max8997_muic_irq_work(struct work_struct *work)
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{
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struct max8997_muic_info *info = container_of(work,
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struct max8997_muic_info, irq_work);
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struct max8997_platform_data *pdata =
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dev_get_platdata(info->iodev->dev);
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char env_name_str[30], env_state_str[15];
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char *envp[] = { env_name_str, env_state_str, NULL };
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u8 status[3];
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u8 adc, adc_low, adc_err;
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u8 vb_volt, db_chg, dcd_tmr, cdr, chg_type, ovp;
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int irq_type = info->irq - pdata->irq_base;
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int ret;
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mutex_lock(&info->mutex);
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ret = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1,
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3, status);
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if (ret) {
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dev_err(info->dev, "failed to read muic register\n");
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mutex_unlock(&info->mutex);
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return;
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}
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dev_dbg(info->dev, "%s: STATUS1:0x%x, 2:0x%x\n", __func__,
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status[0], status[1]);
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switch (irq_type) {
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case MAX8997_MUICIRQ_ADCError:
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adc_err = status[0] & STATUS1_ADCERR_MASK;
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adc_err >>= STATUS1_ADCERR_SHIFT;
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sprintf(env_name_str, "IRQ=%s", "ADC_Error");
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sprintf(env_state_str, "STATE=%d", adc_err);
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break;
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case MAX8997_MUICIRQ_ADCLow:
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adc_low = status[0] & STATUS1_ADCLOW_MASK;
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adc_low >>= STATUS1_ADCLOW_SHIFT;
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sprintf(env_name_str, "IRQ=%s", "ADC_Low");
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sprintf(env_state_str, "STATE=%d", adc_low);
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break;
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case MAX8997_MUICIRQ_ADC:
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adc = status[0] & STATUS1_ADC_MASK;
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adc >>= STATUS1_ADC_SHIFT;
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max8997_muic_handle_adc(info, adc);
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sprintf(env_name_str, "IRQ=%s", "ADC");
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sprintf(env_state_str, "STATE=%d", adc);
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break;
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case MAX8997_MUICIRQ_VBVolt:
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vb_volt = status[1] & STATUS2_VBVOLT_MASK;
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vb_volt >>= STATUS2_VBVOLT_SHIFT;
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sprintf(env_name_str, "IRQ=%s", "VB_Volt");
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sprintf(env_state_str, "STATE=%d", vb_volt);
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break;
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case MAX8997_MUICIRQ_DBChg:
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db_chg = status[1] & STATUS2_DBCHG_MASK;
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db_chg >>= STATUS2_DBCHG_SHIFT;
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sprintf(env_name_str, "IRQ=%s", "DB_CHARGER");
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sprintf(env_state_str, "STATE=%d", db_chg);
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break;
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case MAX8997_MUICIRQ_DCDTmr:
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dcd_tmr = status[1] & STATUS2_DCDTMR_MASK;
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dcd_tmr >>= STATUS2_DCDTMR_SHIFT;
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sprintf(env_name_str, "IRQ=%s", "DCD_TIMER");
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sprintf(env_state_str, "STATE=%d", dcd_tmr);
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break;
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case MAX8997_MUICIRQ_ChgDetRun:
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cdr = status[1] & STATUS2_CHGDETRUN_MASK;
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cdr >>= STATUS2_CHGDETRUN_SHIFT;
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sprintf(env_name_str, "IRQ=%s", "CHG_DET_RUN");
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sprintf(env_state_str, "STATE=%d", cdr);
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break;
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case MAX8997_MUICIRQ_ChgTyp:
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chg_type = status[1] & STATUS2_CHGTYP_MASK;
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chg_type >>= STATUS2_CHGTYP_SHIFT;
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max8997_muic_handle_charger_type(info, chg_type);
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sprintf(env_name_str, "IRQ=%s", "CHARGER_TYPE");
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sprintf(env_state_str, "STATE=%d", chg_type);
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break;
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case MAX8997_MUICIRQ_OVP:
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ovp = status[2] & STATUS3_OVP_MASK;
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ovp >>= STATUS3_OVP_SHIFT;
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sprintf(env_name_str, "IRQ=%s", "OVER-VOLTAGE");
|
||||
sprintf(env_state_str, "STATE=%d", ovp);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
kobject_uevent_env(&info->dev->kobj, KOBJ_CHANGE, envp);
|
||||
|
||||
mutex_unlock(&info->mutex);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
static irqreturn_t max8997_muic_irq_handler(int irq, void *data)
|
||||
{
|
||||
struct max8997_muic_info *info = data;
|
||||
|
||||
dev_dbg(info->dev, "irq:%d\n", irq);
|
||||
info->irq = irq;
|
||||
|
||||
schedule_work(&info->irq_work);
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static void max8997_muic_detect_dev(struct max8997_muic_info *info)
|
||||
{
|
||||
int ret;
|
||||
u8 status[2], adc, chg_type;
|
||||
|
||||
ret = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1,
|
||||
2, status);
|
||||
if (ret) {
|
||||
dev_err(info->dev, "failed to read muic register\n");
|
||||
return;
|
||||
}
|
||||
|
||||
dev_info(info->dev, "STATUS1:0x%x, STATUS2:0x%x\n",
|
||||
status[0], status[1]);
|
||||
|
||||
adc = status[0] & STATUS1_ADC_MASK;
|
||||
adc >>= STATUS1_ADC_SHIFT;
|
||||
|
||||
chg_type = status[1] & STATUS2_CHGTYP_MASK;
|
||||
chg_type >>= STATUS2_CHGTYP_SHIFT;
|
||||
|
||||
max8997_muic_handle_adc(info, adc);
|
||||
max8997_muic_handle_charger_type(info, chg_type);
|
||||
}
|
||||
|
||||
static ssize_t max8997_muic_show_manualsw(struct device *dev,
|
||||
struct device_attribute *attr, char *buf)
|
||||
{
|
||||
struct max8997_muic_info *info = dev_get_drvdata(dev);
|
||||
int ret;
|
||||
u8 value, manual_switch;
|
||||
|
||||
ret = max8997_read_reg(info->muic, MAX8997_MUIC_REG_CONTROL1, &value);
|
||||
if (ret) {
|
||||
dev_err(info->dev, "failed to read muic register\n");
|
||||
return sprintf(buf, "UNKNOWN\n");
|
||||
}
|
||||
|
||||
manual_switch = value & (COMN1SW_MASK | COMP2SW_MASK);
|
||||
|
||||
switch (manual_switch) {
|
||||
case MAX8997_SW_USB:
|
||||
return sprintf(buf, "USB\n");
|
||||
case MAX8997_SW_AUDIO:
|
||||
return sprintf(buf, "AUDIO\n");
|
||||
case MAX8997_SW_UART:
|
||||
return sprintf(buf, "UART\n");
|
||||
default:
|
||||
return sprintf(buf, "OPEN\n");
|
||||
}
|
||||
}
|
||||
|
||||
static ssize_t max8997_muic_store_manualsw(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct max8997_muic_info *info = dev_get_drvdata(dev);
|
||||
int ret;
|
||||
u8 manual_switch;
|
||||
|
||||
if (!strncmp(buf, "USB", 3)) {
|
||||
manual_switch = MAX8997_SW_USB;
|
||||
} else if (!strncmp(buf, "AUDIO", 5)) {
|
||||
manual_switch = MAX8997_SW_AUDIO;
|
||||
} else if (!strncmp(buf, "UART", 4)) {
|
||||
manual_switch = MAX8997_SW_UART;
|
||||
} else if (!strncmp(buf, "OPEN", 4)) {
|
||||
manual_switch = MAX8997_SW_OPEN;
|
||||
} else {
|
||||
dev_err(info->dev, "invalid parameter\n");
|
||||
goto out;
|
||||
}
|
||||
|
||||
ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1,
|
||||
manual_switch, SW_MASK);
|
||||
if (ret)
|
||||
dev_err(info->dev, "failed to update muic register\n");
|
||||
out:
|
||||
return count;
|
||||
}
|
||||
|
||||
static DEVICE_ATTR(switch, S_IRUGO | S_IWUSR,
|
||||
max8997_muic_show_manualsw, max8997_muic_store_manualsw);
|
||||
|
||||
static struct attribute *max8997_muic_attributes[] = {
|
||||
&dev_attr_switch.attr,
|
||||
NULL
|
||||
};
|
||||
|
||||
static const struct attribute_group max8997_muic_group = {
|
||||
.attrs = max8997_muic_attributes,
|
||||
};
|
||||
|
||||
static void max8997_initialize_device(struct max8997_muic_info *info)
|
||||
{
|
||||
struct max8997_muic_platform_data *mdata = info->muic_pdata;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < mdata->num_init_data; i++) {
|
||||
max8997_write_reg(info->muic, mdata->init_data[i].addr,
|
||||
mdata->init_data[i].data);
|
||||
}
|
||||
}
|
||||
|
||||
static int __devinit max8997_muic_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent);
|
||||
struct max8997_platform_data *pdata = dev_get_platdata(iodev->dev);
|
||||
struct max8997_muic_info *info;
|
||||
int ret, i;
|
||||
|
||||
info = kzalloc(sizeof(struct max8997_muic_info), GFP_KERNEL);
|
||||
if (!info) {
|
||||
dev_err(&pdev->dev, "failed to allocate memory\n");
|
||||
ret = -ENOMEM;
|
||||
goto err_kfree;
|
||||
}
|
||||
|
||||
if (!pdata->muic_pdata) {
|
||||
dev_err(&pdev->dev, "failed to get platform_data\n");
|
||||
ret = -EINVAL;
|
||||
goto err_pdata;
|
||||
}
|
||||
info->muic_pdata = pdata->muic_pdata;
|
||||
|
||||
info->dev = &pdev->dev;
|
||||
info->iodev = iodev;
|
||||
info->muic = iodev->muic;
|
||||
|
||||
platform_set_drvdata(pdev, info);
|
||||
mutex_init(&info->mutex);
|
||||
|
||||
ret = sysfs_create_group(&pdev->dev.kobj, &max8997_muic_group);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev,
|
||||
"failed to create max8997 muic attribute group\n");
|
||||
goto err_sysfs;
|
||||
}
|
||||
|
||||
INIT_WORK(&info->irq_work, max8997_muic_irq_work);
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) {
|
||||
struct max8997_muic_irq *muic_irq = &muic_irqs[i];
|
||||
|
||||
ret = request_threaded_irq(pdata->irq_base + muic_irq->irq,
|
||||
NULL, max8997_muic_irq_handler,
|
||||
0, muic_irq->name,
|
||||
info);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev,
|
||||
"failed: irq request (IRQ: %d,"
|
||||
" error :%d)\n",
|
||||
muic_irq->irq, ret);
|
||||
|
||||
for (i = i - 1; i >= 0; i--)
|
||||
free_irq(muic_irq->irq, info);
|
||||
|
||||
goto err_irq;
|
||||
}
|
||||
}
|
||||
|
||||
/* Initialize registers according to platform data */
|
||||
max8997_initialize_device(info);
|
||||
|
||||
/* Initial device detection */
|
||||
max8997_muic_detect_dev(info);
|
||||
|
||||
return ret;
|
||||
|
||||
err_irq:
|
||||
sysfs_remove_group(&pdev->dev.kobj, &max8997_muic_group);
|
||||
err_sysfs:
|
||||
err_pdata:
|
||||
kfree(info);
|
||||
err_kfree:
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit max8997_muic_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct max8997_muic_info *info = platform_get_drvdata(pdev);
|
||||
struct max8997_platform_data *pdata =
|
||||
dev_get_platdata(info->iodev->dev);
|
||||
int i;
|
||||
|
||||
sysfs_remove_group(&pdev->dev.kobj, &max8997_muic_group);
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(muic_irqs); i++)
|
||||
free_irq(pdata->irq_base + muic_irqs[i].irq, info);
|
||||
|
||||
kfree(info);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver max8997_muic_driver = {
|
||||
.driver = {
|
||||
.name = "max8997-muic",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = max8997_muic_probe,
|
||||
.remove = __devexit_p(max8997_muic_remove),
|
||||
};
|
||||
|
||||
static int __init max8997_muic_init(void)
|
||||
{
|
||||
return platform_driver_register(&max8997_muic_driver);
|
||||
}
|
||||
module_init(max8997_muic_init);
|
||||
|
||||
static void __exit max8997_muic_exit(void)
|
||||
{
|
||||
platform_driver_unregister(&max8997_muic_driver);
|
||||
}
|
||||
module_exit(max8997_muic_exit);
|
||||
|
||||
MODULE_DESCRIPTION("Maxim MAX8997 MUIC driver");
|
||||
MODULE_AUTHOR("Donggeun Kim <dg77.kim@samsung.com>");
|
||||
MODULE_LICENSE("GPL");
|
||||
Загрузка…
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