diff options
author | Chanwoo Choi <cw00.choi@samsung.com> | 2012-05-09 03:32:04 (GMT) |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-05-09 22:15:59 (GMT) |
commit | 6a7e2618b3dbfbf1e8ab2b4be102b2944738fb68 (patch) | |
tree | 4f66686fa3df7e9a060f9a729eb17c9aba846bc0 /drivers/misc/max8997-muic.c | |
parent | b76668ba8a7722f589af2e13a340f3629430a35a (diff) | |
download | linux-fsl-qoriq-6a7e2618b3dbfbf1e8ab2b4be102b2944738fb68.tar.xz |
misc: MAX8997: Remove max8997-muic driver
This patch remove old max8997-muic drvier because of newly Extcon framework.
Extcon framework manages the external connector, so add extcon-max8997 driver
by using Extcon interface to support MUIC feature of Maxim 8997 PMIC instead
of max8997-muic driver(drivers/misc/max8997-muic.c).
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/max8997-muic.c')
-rw-r--r-- | drivers/misc/max8997-muic.c | 495 |
1 files changed, 0 insertions, 495 deletions
diff --git a/drivers/misc/max8997-muic.c b/drivers/misc/max8997-muic.c deleted file mode 100644 index 19591ea..0000000 --- a/drivers/misc/max8997-muic.c +++ /dev/null @@ -1,495 +0,0 @@ -/* - * max8997-muic.c - MAX8997 muic driver for the Maxim 8997 - * - * Copyright (C) 2011 Samsung Electrnoics - * Donggeun Kim <dg77.kim@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/i2c.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/err.h> -#include <linux/platform_device.h> -#include <linux/kobject.h> -#include <linux/mfd/max8997.h> -#include <linux/mfd/max8997-private.h> - -/* MAX8997-MUIC STATUS1 register */ -#define STATUS1_ADC_SHIFT 0 -#define STATUS1_ADCLOW_SHIFT 5 -#define STATUS1_ADCERR_SHIFT 6 -#define STATUS1_ADC_MASK (0x1f << STATUS1_ADC_SHIFT) -#define STATUS1_ADCLOW_MASK (0x1 << STATUS1_ADCLOW_SHIFT) -#define STATUS1_ADCERR_MASK (0x1 << STATUS1_ADCERR_SHIFT) - -/* MAX8997-MUIC STATUS2 register */ -#define STATUS2_CHGTYP_SHIFT 0 -#define STATUS2_CHGDETRUN_SHIFT 3 -#define STATUS2_DCDTMR_SHIFT 4 -#define STATUS2_DBCHG_SHIFT 5 -#define STATUS2_VBVOLT_SHIFT 6 -#define STATUS2_CHGTYP_MASK (0x7 << STATUS2_CHGTYP_SHIFT) -#define STATUS2_CHGDETRUN_MASK (0x1 << STATUS2_CHGDETRUN_SHIFT) -#define STATUS2_DCDTMR_MASK (0x1 << STATUS2_DCDTMR_SHIFT) -#define STATUS2_DBCHG_MASK (0x1 << STATUS2_DBCHG_SHIFT) -#define STATUS2_VBVOLT_MASK (0x1 << STATUS2_VBVOLT_SHIFT) - -/* MAX8997-MUIC STATUS3 register */ -#define STATUS3_OVP_SHIFT 2 -#define STATUS3_OVP_MASK (0x1 << STATUS3_OVP_SHIFT) - -/* MAX8997-MUIC CONTROL1 register */ -#define COMN1SW_SHIFT 0 -#define COMP2SW_SHIFT 3 -#define COMN1SW_MASK (0x7 << COMN1SW_SHIFT) -#define COMP2SW_MASK (0x7 << COMP2SW_SHIFT) -#define SW_MASK (COMP2SW_MASK | COMN1SW_MASK) - -#define MAX8997_SW_USB ((1 << COMP2SW_SHIFT) | (1 << COMN1SW_SHIFT)) -#define MAX8997_SW_AUDIO ((2 << COMP2SW_SHIFT) | (2 << COMN1SW_SHIFT)) -#define MAX8997_SW_UART ((3 << COMP2SW_SHIFT) | (3 << COMN1SW_SHIFT)) -#define MAX8997_SW_OPEN ((0 << COMP2SW_SHIFT) | (0 << COMN1SW_SHIFT)) - -#define MAX8997_ADC_GROUND 0x00 -#define MAX8997_ADC_MHL 0x01 -#define MAX8997_ADC_JIG_USB_1 0x18 -#define MAX8997_ADC_JIG_USB_2 0x19 -#define MAX8997_ADC_DESKDOCK 0x1a -#define MAX8997_ADC_JIG_UART 0x1c -#define MAX8997_ADC_CARDOCK 0x1d -#define MAX8997_ADC_OPEN 0x1f - -struct max8997_muic_irq { - unsigned int irq; - const char *name; -}; - -static struct max8997_muic_irq muic_irqs[] = { - { MAX8997_MUICIRQ_ADCError, "muic-ADC_error" }, - { MAX8997_MUICIRQ_ADCLow, "muic-ADC_low" }, - { MAX8997_MUICIRQ_ADC, "muic-ADC" }, - { MAX8997_MUICIRQ_VBVolt, "muic-VB_voltage" }, - { MAX8997_MUICIRQ_DBChg, "muic-DB_charger" }, - { MAX8997_MUICIRQ_DCDTmr, "muic-DCD_timer" }, - { MAX8997_MUICIRQ_ChgDetRun, "muic-CDR_status" }, - { MAX8997_MUICIRQ_ChgTyp, "muic-charger_type" }, - { MAX8997_MUICIRQ_OVP, "muic-over_voltage" }, -}; - -struct max8997_muic_info { - struct device *dev; - struct max8997_dev *iodev; - struct i2c_client *muic; - struct max8997_muic_platform_data *muic_pdata; - - int irq; - struct work_struct irq_work; - - enum max8997_muic_charger_type pre_charger_type; - int pre_adc; - - struct mutex mutex; -}; - -static int max8997_muic_handle_usb(struct max8997_muic_info *info, - enum max8997_muic_usb_type usb_type, bool attached) -{ - struct max8997_muic_platform_data *mdata = info->muic_pdata; - int ret = 0; - - if (usb_type == MAX8997_USB_HOST) { - /* switch to USB */ - ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1, - attached ? MAX8997_SW_USB : MAX8997_SW_OPEN, - SW_MASK); - if (ret) { - dev_err(info->dev, "failed to update muic register\n"); - goto out; - } - } - - if (mdata->usb_callback) - mdata->usb_callback(usb_type, attached); -out: - return ret; -} - -static void max8997_muic_handle_mhl(struct max8997_muic_info *info, - bool attached) -{ - struct max8997_muic_platform_data *mdata = info->muic_pdata; - - if (mdata->mhl_callback) - mdata->mhl_callback(attached); -} - -static int max8997_muic_handle_dock(struct max8997_muic_info *info, - int adc, bool attached) -{ - struct max8997_muic_platform_data *mdata = info->muic_pdata; - int ret = 0; - - /* switch to AUDIO */ - ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1, - attached ? MAX8997_SW_AUDIO : MAX8997_SW_OPEN, - SW_MASK); - if (ret) { - dev_err(info->dev, "failed to update muic register\n"); - goto out; - } - - switch (adc) { - case MAX8997_ADC_DESKDOCK: - if (mdata->deskdock_callback) - mdata->deskdock_callback(attached); - break; - case MAX8997_ADC_CARDOCK: - if (mdata->cardock_callback) - mdata->cardock_callback(attached); - break; - default: - break; - } -out: - return ret; -} - -static int max8997_muic_handle_jig_uart(struct max8997_muic_info *info, - bool attached) -{ - struct max8997_muic_platform_data *mdata = info->muic_pdata; - int ret = 0; - - /* switch to UART */ - ret = max8997_update_reg(info->muic, MAX8997_MUIC_REG_CONTROL1, - attached ? MAX8997_SW_UART : MAX8997_SW_OPEN, - SW_MASK); - if (ret) { - dev_err(info->dev, "failed to update muic register\n"); - goto out; - } - - if (mdata->uart_callback) - mdata->uart_callback(attached); -out: - return ret; -} - -static int max8997_muic_handle_adc_detach(struct max8997_muic_info *info) -{ - int ret = 0; - - switch (info->pre_adc) { - case MAX8997_ADC_GROUND: - ret = max8997_muic_handle_usb(info, MAX8997_USB_HOST, false); - break; - case MAX8997_ADC_MHL: - max8997_muic_handle_mhl(info, false); - break; - case MAX8997_ADC_JIG_USB_1: - case MAX8997_ADC_JIG_USB_2: - ret = max8997_muic_handle_usb(info, MAX8997_USB_DEVICE, false); - break; - case MAX8997_ADC_DESKDOCK: - case MAX8997_ADC_CARDOCK: - ret = max8997_muic_handle_dock(info, info->pre_adc, false); - break; - case MAX8997_ADC_JIG_UART: - ret = max8997_muic_handle_jig_uart(info, false); - break; - default: - break; - } - - return ret; -} - -static int max8997_muic_handle_adc(struct max8997_muic_info *info, int adc) -{ - int ret = 0; - - switch (adc) { - case MAX8997_ADC_GROUND: - ret = max8997_muic_handle_usb(info, MAX8997_USB_HOST, true); - break; - case MAX8997_ADC_MHL: - max8997_muic_handle_mhl(info, true); - break; - case MAX8997_ADC_JIG_USB_1: - case MAX8997_ADC_JIG_USB_2: - ret = max8997_muic_handle_usb(info, MAX8997_USB_DEVICE, true); - break; - case MAX8997_ADC_DESKDOCK: - case MAX8997_ADC_CARDOCK: - ret = max8997_muic_handle_dock(info, adc, true); - break; - case MAX8997_ADC_JIG_UART: - ret = max8997_muic_handle_jig_uart(info, true); - break; - case MAX8997_ADC_OPEN: - ret = max8997_muic_handle_adc_detach(info); - break; - default: - break; - } - - info->pre_adc = adc; - - return ret; -} - -static int max8997_muic_handle_charger_type(struct max8997_muic_info *info, - enum max8997_muic_charger_type charger_type) -{ - struct max8997_muic_platform_data *mdata = info->muic_pdata; - u8 adc; - int ret; - - ret = max8997_read_reg(info->muic, MAX8997_MUIC_REG_STATUS1, &adc); - if (ret) { - dev_err(info->dev, "failed to read muic register\n"); - goto out; - } - - switch (charger_type) { - case MAX8997_CHARGER_TYPE_NONE: - if (mdata->charger_callback) - mdata->charger_callback(false, charger_type); - if (info->pre_charger_type == MAX8997_CHARGER_TYPE_USB) { - max8997_muic_handle_usb(info, - MAX8997_USB_DEVICE, false); - } - break; - case MAX8997_CHARGER_TYPE_USB: - if ((adc & STATUS1_ADC_MASK) == MAX8997_ADC_OPEN) { - max8997_muic_handle_usb(info, - MAX8997_USB_DEVICE, true); - } - if (mdata->charger_callback) - mdata->charger_callback(true, charger_type); - break; - case MAX8997_CHARGER_TYPE_DOWNSTREAM_PORT: - case MAX8997_CHARGER_TYPE_DEDICATED_CHG: - case MAX8997_CHARGER_TYPE_500MA: - case MAX8997_CHARGER_TYPE_1A: - if (mdata->charger_callback) - mdata->charger_callback(true, charger_type); - break; - default: - break; - } - - info->pre_charger_type = charger_type; -out: - return ret; -} - -static void max8997_muic_irq_work(struct work_struct *work) -{ - struct max8997_muic_info *info = container_of(work, - struct max8997_muic_info, irq_work); - struct max8997_platform_data *pdata = - dev_get_platdata(info->iodev->dev); - u8 status[3]; - u8 adc, chg_type; - - int irq_type = info->irq - pdata->irq_base; - int ret; - - mutex_lock(&info->mutex); - - ret = max8997_bulk_read(info->muic, MAX8997_MUIC_REG_STATUS1, - 3, status); - if (ret) { - dev_err(info->dev, "failed to read muic register\n"); - mutex_unlock(&info->mutex); - return; - } - - dev_dbg(info->dev, "%s: STATUS1:0x%x, 2:0x%x\n", __func__, - status[0], status[1]); - - switch (irq_type) { - case MAX8997_MUICIRQ_ADC: - adc = status[0] & STATUS1_ADC_MASK; - adc >>= STATUS1_ADC_SHIFT; - - max8997_muic_handle_adc(info, adc); - break; - case MAX8997_MUICIRQ_ChgTyp: - chg_type = status[1] & STATUS2_CHGTYP_MASK; - chg_type >>= STATUS2_CHGTYP_SHIFT; - - max8997_muic_handle_charger_type(info, chg_type); - break; - default: - dev_info(info->dev, "misc interrupt: %s occurred\n", - muic_irqs[irq_type].name); - break; - } - - 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 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); - - 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: -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; - - for (i = 0; i < ARRAY_SIZE(muic_irqs); i++) - free_irq(pdata->irq_base + muic_irqs[i].irq, info); - cancel_work_sync(&info->irq_work); - - 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), -}; - -module_platform_driver(max8997_muic_driver); - -MODULE_DESCRIPTION("Maxim MAX8997 MUIC driver"); -MODULE_AUTHOR("Donggeun Kim <dg77.kim@samsung.com>"); -MODULE_LICENSE("GPL"); |