From mboxrd@z Thu Jan  1 00:00:00 1970
From: Haojian Zhuang <haojian.zhuang@gmail.com>
Subject: Re: hi marek
Date: Wed, 10 Nov 2010 17:29:26 +0800
Message-ID: <AANLkTi=TupY6Equaifzs6qX8_1y-tNrPFtVB+0=k_Xyh@mail.gmail.com>
References: <20101109184220.00003433@unknown>
	<201011091936.13781.marek.vasut@gmail.com>
	<20101110100709.00003d84@unknown>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: QUOTED-PRINTABLE
Return-path: <linux-input-owner@vger.kernel.org>
Received: from mail-ww0-f44.google.com ([74.125.82.44]:41400 "EHLO
	mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1753745Ab0KJJ33 convert rfc822-to-8bit (ORCPT
	<rfc822;linux-input@vger.kernel.org>);
	Wed, 10 Nov 2010 04:29:29 -0500
Received: by wwb39 with SMTP id 39so498870wwb.1
        for <linux-input@vger.kernel.org>; Wed, 10 Nov 2010 01:29:28 -0800 (PST)
In-Reply-To: <20101110100709.00003d84@unknown>
Sender: linux-input-owner@vger.kernel.org
List-Id: linux-input@vger.kernel.org
To: dylan cristiani <d.cristiani@idem-tech.it>
Cc: Marek Vasut <marek.vasut@gmail.com>, linux-arm-kernel <linux-arm-kernel@lists.infradead.org>, linux-input <linux-input@vger.kernel.org>

On Wed, Nov 10, 2010 at 5:07 PM, dylan cristiani
<d.cristiani@idem-tech.it> wrote:
> 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
>
> /*
> =A0* Based on spitz_pm.c and sharp code.
> =A0*
> =A0* Distributed under term of GPLv2.
> =A0*
> =A0*/
>
> #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 =A0 =A0 =A0 =A0 =A0 =A0 =A0 17
> #define NYLUX_BATT_VOLT =A0 =A0 =A0 =A0 1
> #define NYLUX_STATUS_ACIN =A0 =A0 =A0 4
> #define NYLUX_BKUPBATT_TEMP =A0 =A0 2
> #define NYLUX_CHARGE_STATUS =A0 =A0 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)
> {
> // =A0 =A0 =A0struct ucb1400_ts *ucb;
> =A0 =A0 =A0 =A0unsigned int voltage =3D 0;
>
> =A0 =A0 =A0 =A0printk(KERN_INFO "Reading_Main_Battery\n");
>
> =A0 =A0 =A0 =A0ucb1400_adc_enable(ucb->ac97);
>
> // =A0 =A0 =A0printk(KERN_INFO "Post adc_enable\n");
>
> =A0 =A0 =A0 =A0mdelay(1);
> =A0 =A0 =A0 =A0voltage =3D ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_AD=
0, 0);
> =A0 =A0 =A0 =A0printk(KERN_INFO "\nVVVVVVvoltage %d\n", voltage);
>
> =A0 =A0 =A0 =A0ucb1400_adc_disable(ucb->ac97);
>
> =A0 =A0 =A0 =A0return voltage;
> }
>
> unsigned long nylux_read_bkup_battery(void)
> {
> // =A0 =A0 =A0struct ucb1400_ts *ucb;
> =A0 =A0 =A0 =A0unsigned int voltage;
>
> =A0 =A0 =A0 =A0ucb1400_adc_enable(ucb->ac97);
>
> =A0 =A0 =A0 =A0mdelay(1);
> =A0 =A0 =A0 =A0voltage =3D ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_AD=
1, 0);
>
> =A0 =A0 =A0 =A0ucb1400_adc_disable(ucb->ac97);
> =A0 =A0 =A0 =A0//printk(KERN_INFO "Battery_bkup value =3D %d\n", volt=
age);
>
> =A0 =A0 =A0 =A0return voltage;
> }
>
> unsigned long nylux_charge_status(void)
> {
> // =A0 =A0 =A0struct ucb1400_ts *ucb;
> =A0 =A0 =A0 =A0unsigned int status;
>
> =A0 =A0 =A0 =A0//printk(KERN_INFO "Charge_status\n");
> =A0 =A0 =A0 =A0ucb1400_adc_enable(ucb->ac97);
> =A0 =A0 =A0 =A0mdelay(1);
> =A0 =A0 =A0 =A0status =3D ucb1400_adc_read(ucb->ac97, UCB_ADC_INP_AD2=
, 0);
> =A0 =A0 =A0 =A0//printk(KERN_INFO "Charge status=3D %d\n", status);
> =A0 =A0 =A0 =A0ucb1400_adc_disable(ucb->ac97);
>
> =A0 =A0 =A0 =A0return status;
>
> }
>
> static unsigned long nylux_read_devdata(int which)
> {
> =A0 =A0 =A0 =A0unsigned long ret =3D ~0;
>
> =A0 =A0 =A0 =A0switch (which) {
> =A0 =A0 =A0 =A0case NYLUX_BATT_VOLT:
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0ret =3D nylux_read_main_battery();
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0//printk(KERN_INFO "read_main_battery:=
 %d\n", ret);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0break;
> =A0 =A0 =A0 =A0//case NYLUX_BKUPBATT_TEMP:
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0//ret =3D nylux_read_bkup_battery();
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0//break;
> =A0 =A0 =A0 =A0//case NYLUX_CHARGE_STATUS:
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0//ret =3D nylux_charge_status();
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0//break;
> =A0 =A0 =A0 =A0case NYLUX_STATUS_ACIN: {
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0ret =3D GPLR(AC_IN_INT) & GPIO_bit(AC_=
IN_INT);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0//printk(KERN_INFO "AC_IN =3D %d\n", r=
et);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0//ret =3D read_ac_status();
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0//printk(KERN_INFO "read_ac_status: %d=
\n", ret);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0break;
> =A0 =A0 =A0 =A0}
>
> =A0 =A0 =A0 =A0default:
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0ret =3D ~0;
> =A0 =A0 =A0 =A0}
>
> =A0 =A0 =A0 =A0return ret;
>
> }
>
> //******
> struct battery_thresh battery_levels[] =3D {
> =A0 =A0 =A0 =A0{ 550, 100},
> =A0 =A0 =A0 =A0{ 544, =A097},
> =A0 =A0 =A0 =A0{ 541, =A093},
> =A0 =A0 =A0 =A0{ 536, =A088},
> =A0 =A0 =A0 =A0{ 531, =A083},
> =A0 =A0 =A0 =A0{ 526, =A078},
> =A0 =A0 =A0 =A0{ 522, =A073},
> =A0 =A0 =A0 =A0{ 517, =A068},
> =A0 =A0 =A0 =A0{ 514, =A063},
> =A0 =A0 =A0 =A0{ 510, =A058},
> =A0 =A0 =A0 =A0{ 506, =A053},
> =A0 =A0 =A0 =A0{ 503, =A048},
> =A0 =A0 =A0 =A0{ 499, =A043},
> =A0 =A0 =A0 =A0{ 497, =A038},
> =A0 =A0 =A0 =A0{ 495, =A033},
> =A0 =A0 =A0 =A0{ 493, =A028},
> =A0 =A0 =A0 =A0{ 492, =A023},
> =A0 =A0 =A0 =A0{ 491, =A018},
> =A0 =A0 =A0 =A0{ 489, =A013},
> =A0 =A0 =A0 =A0{ 488, =A0 8},
> =A0 =A0 =A0 =A0{ 484, =A0 3},
> =A0 =A0 =A0 =A0{ 478, =A0 0}
> };
>
> struct sharpsl_charger_machinfo nylux_pm_machinfo =3D {
> =A0 =A0 =A0 =A0.init =A0 =A0 =A0 =A0 =A0 =A0 =3D nylux_charger_init,
> =A0 =A0 =A0 =A0.exit =A0 =A0 =A0 =A0 =A0 =A0 =3D nylux_charger_exit,
> =A0 =A0 =A0 =A0.gpio_acin =A0 =A0 =A0 =A0=3D AC_IN_INT,
> =A0 =A0 =A0 =A0.read_devdata =A0 =A0 =3D nylux_read_devdata,
> =A0 =A0 =A0 =A0.discharge =A0 =A0 =A0 =A0=3D 0,
> =A0 =A0 =A0 =A0.discharge1 =A0 =A0 =A0 =3D 0,
> =A0 =A0 =A0 =A0.charge =A0 =A0 =A0 =A0 =A0 =3D 0,
> =A0 =A0 =A0 =A0.measure_temp =A0 =A0 =3D 0,
> =A0 =A0 =A0 =A0.presuspend =A0 =A0 =A0 =3D 0,
> =A0 =A0 =A0 =A0.postsuspend =A0 =A0 =A0=3D 0,
> =A0 =A0 =A0 =A0.charger_wakeup =A0 =3D 0,
> =A0 =A0 =A0 =A0.should_wakeup =A0 =A0=3D 0,
> =A0 =A0 =A0 =A0.bat_levels =A0 =A0 =A0 =3D 22,
> =A0 =A0 =A0 =A0.bat_levels_noac =A0=3D battery_levels,
> =A0 =A0 =A0 =A0.bat_levels_acin =A0=3D 0,
> =A0 =A0 =A0 =A0.status_high_acin =3D 510,
> =A0 =A0 =A0 =A0.status_low_acin =A0=3D 490,
> =A0 =A0 =A0 =A0.status_high_noac =3D 510,
> =A0 =A0 =A0 =A0.status_low_noac =A0=3D 490,
> =A0 =A0 =A0 =A0.charge_on_volt =A0 =3D 0,
> =A0 =A0 =A0 =A0.charge_on_temp =A0 =3D 0,
> =A0 =A0 =A0 =A0.charge_acin_high =3D 0,
> =A0 =A0 =A0 =A0.charge_acin_low =A0=3D 0,
> =A0 =A0 =A0 =A0.fatal_acin_volt =A0=3D 0,
> =A0 =A0 =A0 =A0.fatal_noacin_volt =3D 0,
>
> =A0 =A0 =A0 =A0.batfull_irq =A0 =A0 =A0=3D 1
> };
>
>
> /*
> static int __init collie_pm_ucb_add(struct ucb1x00_dev *pdev)
> {
> =A0 =A0 =A0 =A0sharpsl_pm.machinfo =3D &nylux_pm_machinfo;
> =A0 =A0 =A0 =A0ucb =3D pdev->ucb;
> =A0 =A0 =A0 =A0return 0;
> }
>
> static struct ucb1x00_driver collie_pm_ucb_driver =3D {
> =A0 =A0 =A0 =A0.add =A0 =A0 =A0 =A0 =A0 =A0=3D collie_pm_ucb_add,
> };
> */
>
> static struct platform_device *nyluxpm_device;
>
> static int __devinit nyluxpm_init(void)
> {
> =A0 =A0 =A0 =A0int ret;
>
> =A0 =A0 =A0 =A0nyluxpm_device =3D platform_device_alloc("sharpsl-pm",=
 -1);
> =A0 =A0 =A0 =A0if (!nyluxpm_device)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return -ENOMEM;
>
> =A0 =A0 =A0 =A0nyluxpm_device->dev.platform_data =3D &nylux_pm_machin=
fo;
> =A0 =A0 =A0 =A0ret =3D platform_device_add(nyluxpm_device);
>
> =A0 =A0 =A0 =A0if (ret)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0platform_device_put(nyluxpm_device);
>
> // =A0 =A0 =A0if (!ret)
> // =A0 =A0 =A0 =A0 =A0 =A0 =A0ret =3D ucb1x00_register_driver(&collie=
_pm_ucb_driver);
>
> =A0 =A0 =A0 =A0return ret;
> }
>
> static void nyluxpm_exit(void)
> {
> // =A0 =A0 =A0ucb1x00_unregister_driver(&collie_pm_ucb_driver);
> =A0 =A0 =A0 =A0platform_device_unregister(nyluxpm_device);
> }
>
> module_init(nyluxpm_init);
> module_exit(nyluxpm_exit);
>
>
> thanks
> dylan
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>

You should append your power driver into drivers/power directory.
There's an example of colie_battery.c. It's also based on udc.

Thanks
Haojian
--
To unsubscribe from this list: send the line "unsubscribe linux-input" =
in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html