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author | Vasily Khoruzhick <anarsoul@gmail.com> | 2011-01-06 21:52:49 +0200 |
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committer | Ben Dooks <ben-linux@fluff.org> | 2011-03-20 23:14:55 +0000 |
commit | a8e99850d39cac11d03100aa9c40ebaea16e48c5 (patch) | |
tree | cad70016dd193f959903886c85caaedd99570fe6 | |
parent | 50e2d10da82774e0733ab561c15c84cb92d9ab33 (diff) | |
download | linux-3.10-a8e99850d39cac11d03100aa9c40ebaea16e48c5.tar.gz linux-3.10-a8e99850d39cac11d03100aa9c40ebaea16e48c5.tar.bz2 linux-3.10-a8e99850d39cac11d03100aa9c40ebaea16e48c5.zip |
ARM: S3C2410: H1940: Add battery support
Add battery monitoring/charging support via pda_power and
s3c_adc_battery drivers
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
-rw-r--r-- | arch/arm/mach-s3c2410/mach-h1940.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2410/mach-h1940.c b/arch/arm/mach-s3c2410/mach-h1940.c index 36cdb721087..a0116ef2eca 100644 --- a/arch/arm/mach-s3c2410/mach-h1940.c +++ b/arch/arm/mach-s3c2410/mach-h1940.c @@ -28,6 +28,8 @@ #include <linux/pwm_backlight.h> #include <linux/i2c.h> #include <linux/leds.h> +#include <linux/pda_power.h> +#include <linux/s3c_adc_battery.h> #include <video/platform_lcd.h> @@ -218,6 +220,146 @@ static struct s3c2410fb_mach_info h1940_fb_info __initdata = { .gpdup_mask= 0xffffffff, }; +static int power_supply_init(struct device *dev) +{ + return gpio_request(S3C2410_GPF(2), "cable plugged"); +} + +static int h1940_is_ac_online(void) +{ + return !gpio_get_value(S3C2410_GPF(2)); +} + +static void power_supply_exit(struct device *dev) +{ + gpio_free(S3C2410_GPF(2)); +} + +static char *h1940_supplicants[] = { + "main-battery", + "backup-battery", +}; + +static struct pda_power_pdata power_supply_info = { + .init = power_supply_init, + .is_ac_online = h1940_is_ac_online, + .exit = power_supply_exit, + .supplied_to = h1940_supplicants, + .num_supplicants = ARRAY_SIZE(h1940_supplicants), +}; + +static struct resource power_supply_resources[] = { + [0] = { + .name = "ac", + .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE | + IORESOURCE_IRQ_HIGHEDGE, + .start = IRQ_EINT2, + .end = IRQ_EINT2, + }, +}; + +static struct platform_device power_supply = { + .name = "pda-power", + .id = -1, + .dev = { + .platform_data = + &power_supply_info, + }, + .resource = power_supply_resources, + .num_resources = ARRAY_SIZE(power_supply_resources), +}; + +static const struct s3c_adc_bat_thresh bat_lut_noac[] = { + { .volt = 4070, .cur = 162, .level = 100}, + { .volt = 4040, .cur = 165, .level = 95}, + { .volt = 4016, .cur = 164, .level = 90}, + { .volt = 3996, .cur = 166, .level = 85}, + { .volt = 3971, .cur = 168, .level = 80}, + { .volt = 3951, .cur = 168, .level = 75}, + { .volt = 3931, .cur = 170, .level = 70}, + { .volt = 3903, .cur = 172, .level = 65}, + { .volt = 3886, .cur = 172, .level = 60}, + { .volt = 3858, .cur = 176, .level = 55}, + { .volt = 3842, .cur = 176, .level = 50}, + { .volt = 3818, .cur = 176, .level = 45}, + { .volt = 3789, .cur = 180, .level = 40}, + { .volt = 3769, .cur = 180, .level = 35}, + { .volt = 3749, .cur = 184, .level = 30}, + { .volt = 3732, .cur = 184, .level = 25}, + { .volt = 3716, .cur = 184, .level = 20}, + { .volt = 3708, .cur = 184, .level = 15}, + { .volt = 3716, .cur = 96, .level = 10}, + { .volt = 3700, .cur = 96, .level = 5}, + { .volt = 3684, .cur = 96, .level = 0}, +}; + +static const struct s3c_adc_bat_thresh bat_lut_acin[] = { + { .volt = 4130, .cur = 0, .level = 100}, + { .volt = 3982, .cur = 0, .level = 50}, + { .volt = 3854, .cur = 0, .level = 10}, + { .volt = 3841, .cur = 0, .level = 0}, +}; + +int h1940_bat_init(void) +{ + int ret; + + ret = gpio_request(H1940_LATCH_SM803_ENABLE, "h1940-charger-enable"); + if (ret) + return ret; + gpio_direction_output(H1940_LATCH_SM803_ENABLE, 0); + + return 0; + +} + +void h1940_bat_exit(void) +{ + gpio_free(H1940_LATCH_SM803_ENABLE); +} + +void h1940_enable_charger(void) +{ + gpio_set_value(H1940_LATCH_SM803_ENABLE, 1); +} + +void h1940_disable_charger(void) +{ + gpio_set_value(H1940_LATCH_SM803_ENABLE, 0); +} + +static struct s3c_adc_bat_pdata h1940_bat_cfg = { + .init = h1940_bat_init, + .exit = h1940_bat_exit, + .enable_charger = h1940_enable_charger, + .disable_charger = h1940_disable_charger, + .gpio_charge_finished = S3C2410_GPF(3), + .gpio_inverted = 1, + .lut_noac = bat_lut_noac, + .lut_noac_cnt = ARRAY_SIZE(bat_lut_noac), + .lut_acin = bat_lut_acin, + .lut_acin_cnt = ARRAY_SIZE(bat_lut_acin), + .volt_channel = 0, + .current_channel = 1, + .volt_mult = 4056, + .current_mult = 1893, + .internal_impedance = 200, + .backup_volt_channel = 3, + /* TODO Check backup volt multiplier */ + .backup_volt_mult = 4056, + .backup_volt_min = 0, + .backup_volt_max = 4149288 +}; + +static struct platform_device h1940_battery = { + .name = "s3c-adc-battery", + .id = -1, + .dev = { + .parent = &s3c_device_adc.dev, + .platform_data = &h1940_bat_cfg, + }, +}; + DEFINE_SPINLOCK(h1940_blink_spin); int h1940_led_blink_set(unsigned gpio, int state, @@ -498,6 +640,8 @@ static struct platform_device *h1940_devices[] __initdata = { &h1940_lcd_powerdev, &s3c_device_adc, &s3c_device_ts, + &power_supply, + &h1940_battery, }; static void __init h1940_map_io(void) |