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| author | Petr Cvek <petr.cvek@tul.cz> | 2015-09-28 23:33:02 +0200 |
|---|---|---|
| committer | Robert Jarzmik <robert.jarzmik@free.fr> | 2015-10-14 23:06:56 +0200 |
| commit | eac2eacc3056842b7dae8ed5ea1edd1a5e966dd8 (patch) | |
| tree | 7ba251e6d82f2319eeef73551ae753a444d621f8 /arch/arm/mach-pxa/magician.c | |
| parent | e7b97a4ce74ad44a419759b008edc75390aab20c (diff) | |
| download | linux-eac2eacc3056842b7dae8ed5ea1edd1a5e966dd8.tar.bz2 | |
ARM: pxa: magician: Fix and add charging detection functions
This patch fixes the charging detection functions for pda_power driver
(according to newly discovered EGPIOs) and add NiCd backup accumulator
charging support.
Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Diffstat (limited to 'arch/arm/mach-pxa/magician.c')
| -rw-r--r-- | arch/arm/mach-pxa/magician.c | 57 |
1 files changed, 50 insertions, 7 deletions
diff --git a/arch/arm/mach-pxa/magician.c b/arch/arm/mach-pxa/magician.c index 449ca0f3731f..8b60bd829d17 100644 --- a/arch/arm/mach-pxa/magician.c +++ b/arch/arm/mach-pxa/magician.c @@ -518,18 +518,59 @@ static struct platform_device gpio_vbus = { * External power */ -static int power_supply_init(struct device *dev) +static int magician_supply_init(struct device *dev) { - return gpio_request(EGPIO_MAGICIAN_CABLE_TYPE, "Cable USB/AC type"); + int ret = -1; + + ret = gpio_request(EGPIO_MAGICIAN_CABLE_TYPE, "Cable is AC charger"); + if (ret) { + pr_err("Cannot request AC/USB charger GPIO (%i)\n", ret); + goto err_ac; + } + + ret = gpio_request(EGPIO_MAGICIAN_CABLE_INSERTED, "Cable inserted"); + if (ret) { + pr_err("Cannot request cable detection GPIO (%i)\n", ret); + goto err_usb; + } + + return 0; + +err_usb: + gpio_free(EGPIO_MAGICIAN_CABLE_TYPE); +err_ac: + return ret; +} + +static void magician_set_charge(int flags) +{ + if (flags & PDA_POWER_CHARGE_AC) { + pr_debug("Charging from AC\n"); + gpio_set_value(EGPIO_MAGICIAN_NICD_CHARGE, 1); + } else if (flags & PDA_POWER_CHARGE_USB) { + pr_debug("Charging from USB\n"); + gpio_set_value(EGPIO_MAGICIAN_NICD_CHARGE, 1); + } else { + pr_debug("Charging disabled\n"); + gpio_set_value(EGPIO_MAGICIAN_NICD_CHARGE, 0); + } } static int magician_is_ac_online(void) { - return gpio_get_value(EGPIO_MAGICIAN_CABLE_TYPE); + return gpio_get_value(EGPIO_MAGICIAN_CABLE_INSERTED) && + gpio_get_value(EGPIO_MAGICIAN_CABLE_TYPE); /* AC=1 */ +} + +static int magician_is_usb_online(void) +{ + return gpio_get_value(EGPIO_MAGICIAN_CABLE_INSERTED) && + (!gpio_get_value(EGPIO_MAGICIAN_CABLE_TYPE)); /* USB=0 */ } -static void power_supply_exit(struct device *dev) +static void magician_supply_exit(struct device *dev) { + gpio_free(EGPIO_MAGICIAN_CABLE_INSERTED); gpio_free(EGPIO_MAGICIAN_CABLE_TYPE); } @@ -538,9 +579,11 @@ static char *magician_supplicants[] = { }; static struct pda_power_pdata power_supply_info = { - .init = power_supply_init, + .init = magician_supply_init, + .exit = magician_supply_exit, .is_ac_online = magician_is_ac_online, - .exit = power_supply_exit, + .is_usb_online = magician_is_usb_online, + .set_charge = magician_set_charge, .supplied_to = magician_supplicants, .num_supplicants = ARRAY_SIZE(magician_supplicants), }; @@ -605,7 +648,7 @@ static struct gpio_regulator_config bq24022_info = { .enable_gpio = GPIO30_MAGICIAN_BQ24022_nCHARGE_EN, .enable_high = 0, - .enabled_at_boot = 0, + .enabled_at_boot = 1, .gpios = bq24022_gpios, .nr_gpios = ARRAY_SIZE(bq24022_gpios), |