hi marek

[d.cristiani@idem-tech.it (dylan cristiani)]

On Tue, 9 Nov 2010 19:36:13 +0100
Marek Vasut <marek.vasut@gmail.com> 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