On Wed, Nov 10, 2010 at 5:07 PM, dylan cristiani
<d.cristiani@xxxxxxxxxxxx> wrote:
> 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
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> 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
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