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[ARM] 3723/1: collie charging

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Patch from Pavel Machek

It seems that sharp had charger on by default... This at least turns
it off. Also battery reading now works and is useful.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Pavel Machek 2006-07-11 22:56:13 +01:00 committed by Russell King
parent f7ede370a2
commit 3821589c3b
1 changed files with 45 additions and 24 deletions
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69
arch/arm/mach-sa1100/collie_pm.c
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@ -9,6 +9,9 @@
* 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>
@ -40,9 +43,8 @@ static void collie_charger_init(void)
{
int err;
if (sharpsl_param.adadj != -1) {
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,
@ -72,27 +74,17 @@ static void collie_measure_temp(int on)
static void collie_charge(int on)
{
if (on) {
printk("Should start charger\n");
} else {
printk("Should stop charger\n");
}
#ifdef I_AM_SURE
extern struct platform_device colliescoop_device;
/* Zaurus seems to contain LTC1731 ; it should know when to
/* 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).
*/
#define CF_BUF_CTRL_BASE 0xF0800000
#define SCOOP_REG(adr) (*(volatile unsigned short*)(CF_BUF_CTRL_BASE+(adr)))
#define SCOOP_REG_GPWR SCOOP_REG(SCOOP_GPWR)
if (on) {
set_scoop_gpio(&colliescoop_device.dev, COLLIE_SCP_CHARGE_ON);
} else {
reset_scoop_gpio(&colliescoop_device.dev, COLLIE_SCP_CHARGE_ON);
}
#endif
}
static void collie_discharge(int on)
@ -127,7 +119,6 @@ int collie_read_backup_battery(void)
ucb1x00_adc_enable(ucb);
/* Gives 75..130 */
ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_BBAT_ON, 0);
voltage = ucb1x00_adc_read(ucb, UCB_ADC_INP_AD1, UCB_SYNC);
@ -146,9 +137,8 @@ int collie_read_main_battery(void)
ucb1x00_adc_enable(ucb);
ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_BBAT_ON);
ucb1x00_io_write(ucb, COLLIE_TC35143_GPIO_MBAT_ON, 0);
/* gives values 160..255 with battery removed... and
145..255 with battery inserted. (on AC), goes as low as
80 on DC. */
mdelay(1);
voltage = ucb1x00_adc_read(ucb, UCB_ADC_INP_AD1, UCB_SYNC);
ucb1x00_io_write(ucb, 0, COLLIE_TC35143_GPIO_MBAT_ON);
@ -192,7 +182,7 @@ static unsigned long read_devdata(int which)
case SHARPSL_BATT_TEMP:
return collie_read_temp();
case SHARPSL_ACIN_VOLT:
return 0x1;
return 500;
case SHARPSL_STATUS_ACIN: {
int ret = GPLR & COLLIE_GPIO_AC_IN;
printk("AC status = %d\n", ret);
@ -208,10 +198,33 @@ static unsigned long read_devdata(int which)
}
}
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[] = {
{ 368, 100},
{ 358, 25},
{ 356, 5},
{ 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},
};
@ -226,13 +239,21 @@ struct sharpsl_charger_machinfo collie_pm_machinfo = {
.postsuspend = collie_postsuspend,
.charger_wakeup = collie_charger_wakeup,
.should_wakeup = collie_should_wakeup,
.bat_levels = 3,
.bat_levels = 12,
.bat_levels_noac = collie_battery_levels,
.bat_levels_acin = 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)