hi marek
Marek Vasut
marek.vasut.n900 at gmail.com
Wed Nov 10 04:52:31 EST 2010
> On Wed, Nov 10, 2010 at 5:07 PM, dylan cristiani
> <d.cristiani at idem-tech.it> wrote:
> > On Tue, 9 Nov 2010 19:36:13 +0100
> > Marek Vasut <marek.vasut at 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
> >
> > _______________________________________________
> > linux-arm-kernel mailing list
> > linux-arm-kernel at 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.
That's basically what I said a few lines above ;-)
btw I think he's also intermixing ucb1x00 (ucb < 1400) and ucb1400
>
> Thanks
> Haojian
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