+++ /dev/null
-/*
- * Based on spitz_pm.c and sharp code.
- *
- * Copyright (C) 2001 SHARP
- * Copyright 2005 Pavel Machek <pavel@suse.cz>
- *
- * Distribute under GPLv2.
- *
- * Li-ion batteries are angry beasts, and they like to explode. This driver is not finished,
- * and sometimes charges them when it should not. If it makes angry lithium to come your way...
- * ...well, you have been warned.
- *
- * Actually, this should be quite safe, it seems sharp leaves charger enabled by default,
- * and my collie did not explode (yet).
- */
-
-#include <linux/module.h>
-#include <linux/stat.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/gpio.h>
-
-#include <asm/irq.h>
-#include <mach/hardware.h>
-#include <asm/hardware/scoop.h>
-#include <mach/dma.h>
-#include <mach/collie.h>
-#include <asm/mach/sharpsl_param.h>
-#include <asm/hardware/sharpsl_pm.h>
-
-#include "../drivers/mfd/ucb1x00.h"
-
-static struct ucb1x00 *ucb;
-static int ad_revise;
-
-#define ADCtoPower(x) ((330 * x * 2) / 1024)
-
-static void collie_charger_init(void)
-{
- int err;
-
- if (sharpsl_param.adadj != -1)
- ad_revise = sharpsl_param.adadj;
-
- /* Register interrupt handler. */
- if ((err = request_irq(COLLIE_IRQ_GPIO_AC_IN, sharpsl_ac_isr, IRQF_DISABLED,
- "ACIN", sharpsl_ac_isr))) {
- printk("Could not get irq %d.\n", COLLIE_IRQ_GPIO_AC_IN);
- return;
- }
- if ((err = request_irq(COLLIE_IRQ_GPIO_CO, sharpsl_chrg_full_isr, IRQF_DISABLED,
- "CO", sharpsl_chrg_full_isr))) {
- free_irq(COLLIE_IRQ_GPIO_AC_IN, sharpsl_ac_isr);
- printk("Could not get irq %d.\n", COLLIE_IRQ_GPIO_CO);
- return;
- }
-
- gpio_request(COLLIE_GPIO_CHARGE_ON, "charge on");
- gpio_direction_output(COLLIE_GPIO_CHARGE_ON, 1);
-
- ucb1x00_io_set_dir(ucb, 0, COLLIE_TC35143_GPIO_MBAT_ON | COLLIE_TC35143_GPIO_TMP_ON |
- COLLIE_TC35143_GPIO_BBAT_ON);
- return;
-}
-
-static void collie_measure_temp(int on)
-{
- if (on)
- ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_TMP_ON, 0);
- else
- ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_TMP_ON);
-}
-
-static void collie_charge(int on)
-{
- /* Zaurus seems to contain LTC1731; it should know when to
- * stop charging itself, so setting charge on should be
- * relatively harmless (as long as it is not done too often).
- */
- gpio_set_value(COLLIE_GPIO_CHARGE_ON, on);
-}
-
-static void collie_discharge(int on)
-{
-}
-
-static void collie_discharge1(int on)
-{
-}
-
-static void collie_presuspend(void)
-{
-}
-
-static void collie_postsuspend(void)
-{
-}
-
-static int collie_should_wakeup(unsigned int resume_on_alarm)
-{
- return 0;
-}
-
-static unsigned long collie_charger_wakeup(void)
-{
- return 0;
-}
-
-int collie_read_backup_battery(void)
-{
- int voltage;
-
- ucb1x00_adc_enable(ucb);
-
- ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_BBAT_ON, 0);
- voltage = ucb1x00_adc_read(ucb, UCB_ADC_INP_AD1, UCB_SYNC);
-
- ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_BBAT_ON);
- ucb1x00_adc_disable(ucb);
-
- printk("Backup battery = %d(%d)\n", ADCtoPower(voltage), voltage);
-
- return ADCtoPower(voltage);
-}
-
-int collie_read_main_battery(void)
-{
- int voltage, voltage_rev, voltage_volts;
-
- ucb1x00_adc_enable(ucb);
- ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_BBAT_ON);
- ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_MBAT_ON, 0);
-
- mdelay(1);
- voltage = ucb1x00_adc_read(ucb, UCB_ADC_INP_AD1, UCB_SYNC);
-
- ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_MBAT_ON);
- ucb1x00_adc_disable(ucb);
-
- voltage_rev = voltage + ((ad_revise * voltage) / 652);
- voltage_volts = ADCtoPower(voltage_rev);
-
- printk("Main battery = %d(%d)\n", voltage_volts, voltage);
-
- if (voltage != -1)
- return voltage_volts;
- else
- return voltage;
-}
-
-int collie_read_temp(void)
-{
- int voltage;
-
- /* According to Sharp, temp must be > 973, main battery must be < 465,
- FIXME: sharpsl_pm.c has both conditions negated? FIXME: values
- are way out of range? */
-
- ucb1x00_adc_enable(ucb);
- ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_TMP_ON, 0);
- /* >1010 = battery removed, 460 = 22C ?, higher = lower temp ? */
- voltage = ucb1x00_adc_read(ucb, UCB_ADC_INP_AD0, UCB_SYNC);
- ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_TMP_ON);
- ucb1x00_adc_disable(ucb);
-
- printk("Battery temp = %d\n", voltage);
- return voltage;
-}
-
-static unsigned long read_devdata(int which)
-{
- switch (which) {
- case SHARPSL_BATT_VOLT:
- return collie_read_main_battery();
- case SHARPSL_BATT_TEMP:
- return collie_read_temp();
- case SHARPSL_ACIN_VOLT:
- return 500;
- case SHARPSL_STATUS_ACIN: {
- int ret = GPLR & COLLIE_GPIO_AC_IN;
- printk("AC status = %d\n", ret);
- return ret;
- }
- case SHARPSL_STATUS_FATAL: {
- int ret = GPLR & COLLIE_GPIO_MAIN_BAT_LOW;
- printk("Fatal bat = %d\n", ret);
- return ret;
- }
- default:
- return ~0;
- }
-}
-
-struct battery_thresh collie_battery_levels_acin[] = {
- { 420, 100},
- { 417, 95},
- { 415, 90},
- { 413, 80},
- { 411, 75},
- { 408, 70},
- { 406, 60},
- { 403, 50},
- { 398, 40},
- { 391, 25},
- { 10, 5},
- { 0, 0},
-};
-
-struct battery_thresh collie_battery_levels[] = {
- { 394, 100},
- { 390, 95},
- { 380, 90},
- { 370, 80},
- { 368, 75}, /* From sharp code: battery high with frontlight */
- { 366, 70}, /* 60..90 -- fake values invented by me for testing */
- { 364, 60},
- { 362, 50},
- { 360, 40},
- { 358, 25}, /* From sharp code: battery low with frontlight */
- { 356, 5}, /* From sharp code: battery verylow with frontlight */
- { 0, 0},
-};
-
-struct sharpsl_charger_machinfo collie_pm_machinfo = {
- .init = collie_charger_init,
- .read_devdata = read_devdata,
- .discharge = collie_discharge,
- .discharge1 = collie_discharge1,
- .charge = collie_charge,
- .measure_temp = collie_measure_temp,
- .presuspend = collie_presuspend,
- .postsuspend = collie_postsuspend,
- .charger_wakeup = collie_charger_wakeup,
- .should_wakeup = collie_should_wakeup,
- .bat_levels = 12,
- .bat_levels_noac = collie_battery_levels,
- .bat_levels_acin = collie_battery_levels_acin,
- .status_high_acin = 368,
- .status_low_acin = 358,
- .status_high_noac = 368,
- .status_low_noac = 358,
- .charge_on_volt = 350, /* spitz uses 2.90V, but lets play it safe. */
- .charge_on_temp = 550,
- .charge_acin_high = 550, /* collie does not seem to have sensor for this, anyway */
- .charge_acin_low = 450, /* ignored, too */
- .fatal_acin_volt = 356,
- .fatal_noacin_volt = 356,
-
- .batfull_irq = 1, /* We do not want periodical charge restarts */
-};
-
-static int __init collie_pm_ucb_add(struct ucb1x00_dev *pdev)
-{
- sharpsl_pm.machinfo = &collie_pm_machinfo;
- ucb = pdev->ucb;
- return 0;
-}
-
-static struct ucb1x00_driver collie_pm_ucb_driver = {
- .add = collie_pm_ucb_add,
-};
-
-static struct platform_device *collie_pm_device;
-
-static int __init collie_pm_init(void)
-{
- int ret;
-
- collie_pm_device = platform_device_alloc("sharpsl-pm", -1);
- if (!collie_pm_device)
- return -ENOMEM;
-
- collie_pm_device->dev.platform_data = &collie_pm_machinfo;
- ret = platform_device_add(collie_pm_device);
-
- if (ret)
- platform_device_put(collie_pm_device);
-
- if (!ret)
- ret = ucb1x00_register_driver(&collie_pm_ucb_driver);
-
- return ret;
-}
-
-static void __exit collie_pm_exit(void)
-{
- ucb1x00_unregister_driver(&collie_pm_ucb_driver);
- platform_device_unregister(collie_pm_device);
-}
-
-module_init(collie_pm_init);
-module_exit(collie_pm_exit);
projects / platform / kernel / linux-rpi.git / commitdiff