pull in max8903b_charger
This commit is contained in:
James Sullins
@@ -219,6 +219,12 @@ config CHARGER_MAX8903
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pins based on the status of charger connections with interrupt
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pins based on the status of charger connections with interrupt
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handlers.
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handlers.
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config CHARGER_MAX8903B
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tristate "MAXIM 8903B Charger (HP/Palm)"
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default n
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help
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Say Y to enable support for the MAX8903B charger.
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config CHARGER_TWL4030
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config CHARGER_TWL4030
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tristate "OMAP TWL4030 BCI charger driver"
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tristate "OMAP TWL4030 BCI charger driver"
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depends on TWL4030_CORE
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depends on TWL4030_CORE
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@@ -352,4 +358,6 @@ config PM8921_BMS
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help
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help
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Say Y here to enable support for pm8921 chip bms subdevice
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Say Y here to enable support for pm8921 chip bms subdevice
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endif # POWER_SUPPLY
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endif # POWER_SUPPLY
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@@ -34,6 +34,7 @@ obj-$(CONFIG_BATTERY_JZ4740) += jz4740-battery.o
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obj-$(CONFIG_BATTERY_INTEL_MID) += intel_mid_battery.o
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obj-$(CONFIG_BATTERY_INTEL_MID) += intel_mid_battery.o
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obj-$(CONFIG_CHARGER_ISP1704) += isp1704_charger.o
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obj-$(CONFIG_CHARGER_ISP1704) += isp1704_charger.o
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obj-$(CONFIG_CHARGER_MAX8903) += max8903_charger.o
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obj-$(CONFIG_CHARGER_MAX8903) += max8903_charger.o
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obj-$(CONFIG_CHARGER_MAX8903B) += max8903b_charger.o
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obj-$(CONFIG_CHARGER_TWL4030) += twl4030_charger.o
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obj-$(CONFIG_CHARGER_TWL4030) += twl4030_charger.o
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obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o
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obj-$(CONFIG_CHARGER_GPIO) += gpio-charger.o
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obj-$(CONFIG_BATTERY_MSM) += msm_battery.o
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obj-$(CONFIG_BATTERY_MSM) += msm_battery.o
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392
drivers/power/max8903b_charger.c
Normal file
392
drivers/power/max8903b_charger.c
Normal file
@@ -0,0 +1,392 @@
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/*
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* Copyright (c) 2010, Hewlett-Packard Co. All rights reserved.
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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 version 2 and
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* only version 2 as published by the Free Software Foundation.
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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., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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*/
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#include <linux/bitmap.h>
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#include <linux/bitops.h>
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#include <linux/gpio.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/spinlock.h>
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#include <linux/pm_runtime.h>
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#include <mach/msm_iomap.h>
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#include <linux/kernel.h>
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#include <linux/power_supply.h>
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#include <linux/sysfs.h>
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#include <linux/max8903b_charger.h>
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static struct max8903b_platform_data *pdevice_resource;
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static enum max8903b_current current_limit;
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static int max8903b_current_setup(enum max8903b_current value)
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{
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int rc = 0;
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enum max8903b_current old_current_limit = current_limit;
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current_limit = value;
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switch (value) {
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case CHARGE_DISABLE:
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/* disable charging */
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gpio_set_value(pdevice_resource->CEN_N_in, pdevice_resource->CEN_N_in_polarity ? 0 : 1); /* charger disable */
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printk(KERN_INFO "%s: ### CHARGE_DISABLE\n", __func__);
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break;
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case CURRENT_ZERO: // this is for no charger connection.
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gpio_set_value(pdevice_resource->DCM_in, pdevice_resource->DCM_in_polarity ? 1 : 0); /* usb mode */
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gpio_set_value(pdevice_resource->USUS_in, pdevice_resource->USUS_in_polarity ? 0 : 1); /* usb suspend */
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pdevice_resource->suspend_gpio_config();
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printk(KERN_INFO "%s: CURRENT_ZERO\n", __func__);
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break;
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case CURRENT_100MA:
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gpio_set_value(pdevice_resource->DCM_in, pdevice_resource->DCM_in_polarity? 1 : 0); /* usb mode */
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gpio_set_value(pdevice_resource->IUSB_in, pdevice_resource->IUSB_in_polarity ? 1 : 0);/* usb 100mA */
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gpio_set_value(pdevice_resource->USUS_in, pdevice_resource->USUS_in_polarity ? 1 : 0);
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gpio_set_value(pdevice_resource->CEN_N_in, pdevice_resource->CEN_N_in_polarity ? 1 : 0); /* charger enable */
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printk(KERN_INFO "%s: CURRENT_100MA\n", __func__);
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break;
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case CURRENT_500MA:
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gpio_set_value(pdevice_resource->DCM_in, pdevice_resource->DCM_in_polarity ? 1 : 0); /* usb mode */
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gpio_set_value(pdevice_resource->IUSB_in, pdevice_resource->IUSB_in_polarity ? 0 : 1); /* usb 500mA */
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gpio_set_value(pdevice_resource->USUS_in, pdevice_resource->USUS_in_polarity ? 1 : 0);
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gpio_set_value(pdevice_resource->CEN_N_in, pdevice_resource->CEN_N_in_polarity ? 1 : 0); /* charger enable */
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printk(KERN_INFO "%s: CURRENT_500MA\n", __func__);
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break;
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case CURRENT_750MA:
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case CURRENT_900MA:
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case CURRENT_1000MA:
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case CURRENT_1400MA:
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case CURRENT_1500MA:
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case CURRENT_2000MA:
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gpio_set_value(pdevice_resource->DCM_in, pdevice_resource->DCM_in_polarity ? 0 : 1); /* DC mode */
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if (pdevice_resource->set_DC_CHG_Mode_current) {
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if (pdevice_resource->set_DC_CHG_Mode_current(value) != 0) {
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current_limit = old_current_limit;
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}
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} else {
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printk(KERN_NOTICE "%s: set_DC_CHG_Mode_current is NULL\n", __func__);
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}
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gpio_set_value(pdevice_resource->CEN_N_in, pdevice_resource->CEN_N_in_polarity ? 1 : 0); /* charger enable */
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printk(KERN_INFO "%s: CURRENT_750(4), 900(5), 1000(6), 1400(7), 2000MA(9): %d\n", __func__, value);
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break;
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default:
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current_limit = old_current_limit;
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printk(KERN_INFO "%s: Not supported current setting\n", __func__);
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rc = -EINVAL;
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break;
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}
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return rc;
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}
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static void max8903b_hw_init()
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{
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gpio_set_value(pdevice_resource->DCM_in, pdevice_resource->DCM_in_polarity ? 1 : 0); /* usb mode */
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gpio_set_value(pdevice_resource->IUSB_in, pdevice_resource->IUSB_in_polarity ? 0 : 1); /* usb 500mA */
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gpio_set_value(pdevice_resource->USUS_in, pdevice_resource->USUS_in_polarity ? 1 : 0);
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gpio_set_value(pdevice_resource->CEN_N_in, pdevice_resource->CEN_N_in_polarity ? 1 : 0); /* charger enable */
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}
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/* /sys/power/charger/status */
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/*
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* - DC-input OK
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* - Charge in progress
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* - Charge Done
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* - Charge stop w/Fault
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*/
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/* /sys/power/charger/charging */
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/*
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* Show the current current limit setting.
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*/
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static ssize_t show_currentlimit(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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char *str;
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//printk(KERN_INFO "show_currentlimit! \n");
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switch (current_limit) {
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case CHARGE_DISABLE:
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str = "none"; break;
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case CURRENT_ZERO:
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str = "current0ma"; break;
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case CURRENT_100MA:
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str = "current100ma"; break;
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case CURRENT_500MA:
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str = "current500ma"; break;
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case CURRENT_750MA:
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str = "current750ma"; break;
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case CURRENT_900MA:
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str = "current900ma"; break;
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case CURRENT_1000MA:
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str = "current1000ma"; break;
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case CURRENT_1400MA:
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str = "current1400ma"; break;
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case CURRENT_1500MA:
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str = "current1500ma"; break;
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case CURRENT_2000MA:
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str = "current2000ma"; break;
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default:
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return 0;
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}
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return snprintf(buf, PAGE_SIZE, "%s\n", str);
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}
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/**
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* Parse the input for a charging command and optional current limit.
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*/
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static ssize_t store_currentlimit(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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enum max8903b_current value;
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//printk(KERN_INFO "store_currentlimit! \n");
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if (strncmp(buf, "off", 3) == 0 || strncmp(buf, "none", 4) == 0) {
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value = CHARGE_DISABLE;
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}
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else if (strncmp(buf, "current0ma", 10) == 0) {
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value = CURRENT_ZERO;
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}
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else if (strncmp(buf, "current100ma", 12) == 0) {
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value = CURRENT_100MA;
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}
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else if (strncmp(buf, "current500ma", 12) == 0) {
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value = CURRENT_500MA;
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}
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else if (strncmp(buf, "current750ma", 12) == 0) {
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value = CURRENT_750MA;
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}
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else if (strncmp(buf, "current900ma", 12) == 0) {
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value = CURRENT_900MA;
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}
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else if (strncmp(buf, "current1000ma", 13) == 0) {
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value = CURRENT_1000MA;
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}
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else if (strncmp(buf, "current1400ma", 13) == 0) {
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value = CURRENT_1400MA;
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}
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else if (strncmp(buf, "current1500ma", 13) == 0) {
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value = CURRENT_1500MA;
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}
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else if (strncmp(buf, "current2000ma", 13) == 0) {
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value = CURRENT_2000MA;
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}
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else {
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printk(KERN_INFO "Invalid charging command: %s\n", buf);
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return 0;
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}
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max8903b_current_setup(value);
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return count;
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}
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void max8903b_set_charge_ma (unsigned ma)
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{
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enum max8903b_current value;
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switch (ma){
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case 0:
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value = CURRENT_ZERO; break;
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case 100:
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value = CURRENT_100MA; break;
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case 500:
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value = CURRENT_500MA; break;
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case 750:
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value = CURRENT_750MA; break;
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case 900:
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value = CURRENT_900MA; break;
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case 1000:
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value = CURRENT_1000MA; break;
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case 1400:
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value = CURRENT_1400MA; break;
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case 1500:
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value = CURRENT_1500MA; break;
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case 2000:
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value = CURRENT_2000MA; break;
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default:
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printk(KERN_INFO "%s: Invalid value: %d\n", __func__, ma);
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return;
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}
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if (current_limit != value) max8903b_current_setup(value);
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return;
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}
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EXPORT_SYMBOL (max8903b_set_charge_ma);
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void max8903b_disable_charge()
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{
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max8903b_current_setup(CHARGE_DISABLE);
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}
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EXPORT_SYMBOL (max8903b_disable_charge);
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/* /sys/power/charger/chargerstatus */
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/*
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* Show the current current limit setting.
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*/
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static ssize_t show_chargerstatus(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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char *str;
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int dc_ok, fault, status;
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if ( (dc_ok = gpio_get_value(pdevice_resource->DOK_N_out)) != 0) /* invalid DC-In */
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str = "InvalidDC"; /* invalid DC-in */
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else if ( (fault = gpio_get_value(pdevice_resource->FLT_N_out)) == 0)
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str = "fault"; /* charger stopped with fault */
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else if ( (status = gpio_get_value(pdevice_resource->CHG_N_out)) == 0)
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str = "progress"; /* charge in progress */
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else
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str = "completed"; /* charge completed */
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dc_ok = gpio_get_value(pdevice_resource->DOK_N_out);
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fault = gpio_get_value(pdevice_resource->FLT_N_out);
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status = gpio_get_value(pdevice_resource->CHG_N_out);
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// printk(KERN_INFO "chargerstatus %s! | DC_OK=%d, STAT=%d, FAULT=%d\n",
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// str, dc_ok, status, fault);
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return snprintf(buf, PAGE_SIZE, "%s\n", str);
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}
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static DEVICE_ATTR(currentlimit, S_IRUGO | S_IWUSR, show_currentlimit, store_currentlimit);
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static DEVICE_ATTR(chargerstatus, S_IRUGO, show_chargerstatus, NULL);
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static struct attribute *max8903b_power_sysfs_entries[] = {
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&dev_attr_currentlimit.attr,
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&dev_attr_chargerstatus.attr,
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NULL
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};
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static struct attribute_group max8903b_power_attr_group = {
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.name = NULL,
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.attrs = max8903b_power_sysfs_entries
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};
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static int __devinit max8903b_charger_probe(struct platform_device *pdev)
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{
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struct max8903b_platform_data *pdata;
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int ret;
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pdata = pdev->dev.platform_data;
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pdevice_resource = pdata;
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pdata->request_release_gpios(1);
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ret = sysfs_create_group(&pdev->dev.kobj, &max8903b_power_attr_group);
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if (ret) {
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dev_err(&pdev->dev, "failed to create sysfs 'charger' entries\n");
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} else {
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ret = sysfs_create_link(power_kobj, &pdev->dev.kobj, "charger");
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if (ret)
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dev_err(&pdev->dev, "failed to create sysfs 'charger' link\n");
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}
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||||||
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//max8903b_hw_init();
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|
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return 0;
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}
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||||||
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static int __devexit max8903b_charger_remove(struct platform_device *pdev)
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||||||
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{
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||||||
|
struct max8903b_platform_data *pdata;
|
||||||
|
pdata = pdev->dev.platform_data;
|
||||||
|
pdata->request_release_gpios(0);
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
#ifdef CONFIG_PM
|
||||||
|
static int max8903b_resume(struct platform_device *pdev)
|
||||||
|
{
|
||||||
|
int rc = 0;
|
||||||
|
struct max8903b_platform_data *pdata;
|
||||||
|
|
||||||
|
pdata = pdev->dev.platform_data;
|
||||||
|
|
||||||
|
printk("%s: resume\n", __func__);
|
||||||
|
rc = pdata->request_release_gpios(1);
|
||||||
|
|
||||||
|
return rc;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int max8903b_suspend(struct platform_device *pdev, pm_message_t state)
|
||||||
|
{
|
||||||
|
int rc = 0;
|
||||||
|
struct max8903b_platform_data *pdata;
|
||||||
|
|
||||||
|
pdata = pdev->dev.platform_data;
|
||||||
|
|
||||||
|
printk("%s: suspend\n", __func__);
|
||||||
|
rc = pdata->request_release_gpios(0);
|
||||||
|
|
||||||
|
return rc;
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
static struct platform_driver max8903b_charger_driver = {
|
||||||
|
.probe = max8903b_charger_probe,
|
||||||
|
.remove = __devexit_p(max8903b_charger_remove),
|
||||||
|
.driver = {
|
||||||
|
.name = "max8903b_chg",
|
||||||
|
.owner = THIS_MODULE,
|
||||||
|
},
|
||||||
|
#ifdef CONFIG_PM
|
||||||
|
.suspend = max8903b_suspend,
|
||||||
|
.resume = max8903b_resume,
|
||||||
|
#endif
|
||||||
|
};
|
||||||
|
|
||||||
|
static int __init max8903b_charger_init(void)
|
||||||
|
{
|
||||||
|
int rc;
|
||||||
|
|
||||||
|
rc = platform_driver_register(&max8903b_charger_driver);
|
||||||
|
if (rc ==0)
|
||||||
|
printk(KERN_INFO "max8903b driver registeration! rc = %d\n", rc);
|
||||||
|
else
|
||||||
|
printk(KERN_DEBUG "NO max8903b driver registeration!");
|
||||||
|
|
||||||
|
return rc;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void __exit max8903b_charger_exit(void)
|
||||||
|
{
|
||||||
|
platform_driver_unregister(&max8903b_charger_driver);
|
||||||
|
}
|
||||||
|
|
||||||
|
module_init(max8903b_charger_init);
|
||||||
|
module_exit(max8903b_charger_exit);
|
||||||
|
|
||||||
|
MODULE_DESCRIPTION("MAX8903B battery charger driver");
|
||||||
|
MODULE_AUTHOR("Kyoung Kim <kyoung-il.kim@hp.com><kyoung.kim@palm.com>");
|
||||||
|
MODULE_LICENSE("GPL v2");
|
||||||
38
include/linux/max8903b_charger.h
Normal file
38
include/linux/max8903b_charger.h
Normal file
@@ -0,0 +1,38 @@
|
|||||||
|
#ifndef _LINUX_MAX8903B_CHARGER_H
|
||||||
|
#define _LINUX_MAX8903B_CHARGER_H
|
||||||
|
|
||||||
|
enum max8903b_current {
|
||||||
|
CHARGE_DISABLE,
|
||||||
|
CURRENT_ZERO,
|
||||||
|
CURRENT_100MA,
|
||||||
|
CURRENT_500MA,
|
||||||
|
CURRENT_750MA,
|
||||||
|
CURRENT_900MA,
|
||||||
|
CURRENT_1000MA,
|
||||||
|
CURRENT_1400MA,
|
||||||
|
CURRENT_1500MA,
|
||||||
|
CURRENT_2000MA,
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
struct max8903b_platform_data {
|
||||||
|
int DCM_in;
|
||||||
|
int DCM_in_polarity;
|
||||||
|
int IUSB_in;
|
||||||
|
int IUSB_in_polarity;
|
||||||
|
int USUS_in;
|
||||||
|
int USUS_in_polarity;
|
||||||
|
int CEN_N_in;
|
||||||
|
int CEN_N_in_polarity;
|
||||||
|
int DOK_N_out;
|
||||||
|
int CHG_N_out;
|
||||||
|
int FLT_N_out;
|
||||||
|
int (*set_DC_CHG_Mode_current)(enum max8903b_current value);
|
||||||
|
int (*request_release_gpios)(int request);
|
||||||
|
void (*suspend_gpio_config)(void);
|
||||||
|
};
|
||||||
|
|
||||||
|
void max8903b_set_charge_ma (unsigned ma);
|
||||||
|
void max8903b_disable_charge (void);
|
||||||
|
|
||||||
|
#endif
|
||||||
Reference in New Issue
Block a user