On Tue, 9 Nov 2010 19:36:13 +0100
Marek Vasut <marek.vasut@xxxxxxxxx> wrote:
> On Tuesday 09 November 2010 18:42:20 dylan cristiani wrote:
> > We heard some month ago, about ucb1400 irq passing, via
> > ucb1400_platform_data; then you wrote the patch, that is currently
> > into mainline; i've a little problem, probably due to my infinite
> > ignorance: i'm writing a sort of my_pm.c driver to check whether
> > the ac line is plugged or not, check the main battery voltage and
> > so on (similar to arch/arm/mach-pxa/sharpsl_pm.c and corgi_pm.c if
> > you know it); the problem is that the battery voltages are tied to
> > the ucb1400 ADC inputs, and in my_pm.c driver i don't know how to
> > find the ucb1400_ts structure address to call the functions i need
> > to read these ADC input i.e.:
>
> 1) CC lists
>
> 2) Can you post the driver source you have ?
>
> without seeing the source, I can't help you
here it comes but please close your nose before reading....;-)
arch/arm/mach-pxa/nilux_pm.c
/*
* Based on spitz_pm.c and sharp code.
*
* Distributed under term of GPLv2.
*
*/
#include <linux/module.h>
#include <linux/stat.h>
#include <linux/init.h>
#include <linux/completion.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/gpio.h>
//#include <linux/input.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/suspend.h>
#include <linux/apm-emulation.h>
#include <linux/platform_device.h>
#include <linux/ucb1400.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/pm.h>
#include <mach/pxa2xx-regs.h>
#include <mach/regs-rtc.h>
#include <mach/sharpsl_pm.h>
#define AC_IN_INT 17
#define NYLUX_BATT_VOLT 1
#define NYLUX_STATUS_ACIN 4
#define NYLUX_BKUPBATT_TEMP 2
#define NYLUX_CHARGE_STATUS 3
static struct ucb1400_ts *ucb;
static void nylux_charger_init(void)
{
}
static void nylux_charger_exit(void)
{
}
unsigned long nylux_read_main_battery(void)
{
// struct ucb1400_ts *ucb;
unsigned int voltage = 0;
printk(KERN_INFO "Reading_Main_Battery\n");
ucb1400_adc_enable(ucb->ac97);
// printk(KERN_INFO "Post adc_enable\n");
mdelay(1);
voltage = ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_AD0, 0);
printk(KERN_INFO "\nVVVVVVvoltage %d\n", voltage);
ucb1400_adc_disable(ucb->ac97);
return voltage;
}
unsigned long nylux_read_bkup_battery(void)
{
// struct ucb1400_ts *ucb;
unsigned int voltage;
ucb1400_adc_enable(ucb->ac97);
mdelay(1);
voltage = ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_AD1, 0);
ucb1400_adc_disable(ucb->ac97);
//printk(KERN_INFO "Battery_bkup value = %d\n", voltage);
return voltage;
}
unsigned long nylux_charge_status(void)
{
// struct ucb1400_ts *ucb;
unsigned int status;
//printk(KERN_INFO "Charge_status\n");
ucb1400_adc_enable(ucb->ac97);
mdelay(1);
status = ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_AD2, 0);
//printk(KERN_INFO "Charge status= %d\n", status);
ucb1400_adc_disable(ucb->ac97);
return status;
}
static unsigned long nylux_read_devdata(int which)
{
unsigned long ret = ~0;
switch (which) {
case NYLUX_BATT_VOLT:
ret = nylux_read_main_battery();
//printk(KERN_INFO "read_main_battery: %d\n", ret);
break;
//case NYLUX_BKUPBATT_TEMP:
//ret = nylux_read_bkup_battery();
//break;
//case NYLUX_CHARGE_STATUS:
//ret = nylux_charge_status();
//break;
case NYLUX_STATUS_ACIN: {
ret = GPLR(AC_IN_INT) & GPIO_bit(AC_IN_INT);
//printk(KERN_INFO "AC_IN = %d\n", ret);
//ret = read_ac_status();
//printk(KERN_INFO "read_ac_status: %d\n", ret);
break;
}
default:
ret = ~0;
}
return ret;
}
//******
struct battery_thresh battery_levels[] = {
{ 550, 100},
{ 544, 97},
{ 541, 93},
{ 536, 88},
{ 531, 83},
{ 526, 78},
{ 522, 73},
{ 517, 68},
{ 514, 63},
{ 510, 58},
{ 506, 53},
{ 503, 48},
{ 499, 43},
{ 497, 38},
{ 495, 33},
{ 493, 28},
{ 492, 23},
{ 491, 18},
{ 489, 13},
{ 488, 8},
{ 484, 3},
{ 478, 0}
};
struct sharpsl_charger_machinfo nylux_pm_machinfo = {
.init = nylux_charger_init,
.exit = nylux_charger_exit,
.gpio_acin = AC_IN_INT,
.read_devdata = nylux_read_devdata,
.discharge = 0,
.discharge1 = 0,
.charge = 0,
.measure_temp = 0,
.presuspend = 0,
.postsuspend = 0,
.charger_wakeup = 0,
.should_wakeup = 0,
.bat_levels = 22,
.bat_levels_noac = battery_levels,
.bat_levels_acin = 0,
.status_high_acin = 510,
.status_low_acin = 490,
.status_high_noac = 510,
.status_low_noac = 490,
.charge_on_volt = 0,
.charge_on_temp = 0,
.charge_acin_high = 0,
.charge_acin_low = 0,
.fatal_acin_volt = 0,
.fatal_noacin_volt = 0,
.batfull_irq = 1
};
/*
static int __init collie_pm_ucb_add(struct ucb1x00_dev *pdev)
{
sharpsl_pm.machinfo = &nylux_pm_machinfo;
ucb = pdev->ucb;
return 0;
}
static struct ucb1x00_driver collie_pm_ucb_driver = {
.add = collie_pm_ucb_add,
};
*/
static struct platform_device *nyluxpm_device;
static int __devinit nyluxpm_init(void)
{
int ret;
nyluxpm_device = platform_device_alloc("sharpsl-pm", -1);
if (!nyluxpm_device)
return -ENOMEM;
nyluxpm_device->dev.platform_data = &nylux_pm_machinfo;
ret = platform_device_add(nyluxpm_device);
if (ret)
platform_device_put(nyluxpm_device);
// if (!ret)
// ret = ucb1x00_register_driver(&collie_pm_ucb_driver);
return ret;
}
static void nyluxpm_exit(void)
{
// ucb1x00_unregister_driver(&collie_pm_ucb_driver);
platform_device_unregister(nyluxpm_device);
}
module_init(nyluxpm_init);
module_exit(nyluxpm_exit);
thanks
dylan
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