diff options
author | Vasily Khoruzhick <anarsoul@gmail.com> | 2010-09-27 00:17:48 +0300 |
---|---|---|
committer | Ben Dooks <ben-linux@fluff.org> | 2010-09-27 00:26:16 +0100 |
commit | ecab01d46c68370f347b2c1125cb90070813c799 (patch) | |
tree | 604e8bf2dd12fc9b283a890f92644a6be60b94d6 /arch/arm/mach-s3c2440 | |
parent | 56162badadb91aae93843d8d6558c7d7780e3cb2 (diff) | |
download | linux-ecab01d46c68370f347b2c1125cb90070813c799.tar.bz2 |
ARM: rx1950: Add battery device
This patch adds registration of appropriate device for
s3c-adc-battery driver, so battery monitoring and charging are
available on RX1950 PDA now.
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/mach-s3c2440')
-rw-r--r-- | arch/arm/mach-s3c2440/mach-rx1950.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2440/mach-rx1950.c b/arch/arm/mach-s3c2440/mach-rx1950.c index 142d1f921176..a4d8c15da251 100644 --- a/arch/arm/mach-s3c2440/mach-rx1950.c +++ b/arch/arm/mach-s3c2440/mach-rx1950.c @@ -25,8 +25,10 @@ #include <linux/input.h> #include <linux/gpio_keys.h> #include <linux/sysdev.h> +#include <linux/pda_power.h> #include <linux/pwm_backlight.h> #include <linux/pwm.h> +#include <linux/s3c_adc_battery.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> @@ -127,6 +129,162 @@ static struct s3c2410fb_display rx1950_display = { }; +static int power_supply_init(struct device *dev) +{ + return gpio_request(S3C2410_GPF(2), "cable plugged"); +} + +static int rx1950_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 *rx1950_supplicants[] = { + "main-battery" +}; + +static struct pda_power_pdata power_supply_info = { + .init = power_supply_init, + .is_ac_online = rx1950_is_ac_online, + .exit = power_supply_exit, + .supplied_to = rx1950_supplicants, + .num_supplicants = ARRAY_SIZE(rx1950_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 = 4100, .cur = 156, .level = 100}, + { .volt = 4050, .cur = 156, .level = 95}, + { .volt = 4025, .cur = 141, .level = 90}, + { .volt = 3995, .cur = 144, .level = 85}, + { .volt = 3957, .cur = 162, .level = 80}, + { .volt = 3931, .cur = 147, .level = 75}, + { .volt = 3902, .cur = 147, .level = 70}, + { .volt = 3863, .cur = 153, .level = 65}, + { .volt = 3838, .cur = 150, .level = 60}, + { .volt = 3800, .cur = 153, .level = 55}, + { .volt = 3765, .cur = 153, .level = 50}, + { .volt = 3748, .cur = 172, .level = 45}, + { .volt = 3740, .cur = 153, .level = 40}, + { .volt = 3714, .cur = 175, .level = 35}, + { .volt = 3710, .cur = 156, .level = 30}, + { .volt = 3963, .cur = 156, .level = 25}, + { .volt = 3672, .cur = 178, .level = 20}, + { .volt = 3651, .cur = 178, .level = 15}, + { .volt = 3629, .cur = 178, .level = 10}, + { .volt = 3612, .cur = 162, .level = 5}, + { .volt = 3605, .cur = 162, .level = 0}, +}; + +static const struct s3c_adc_bat_thresh bat_lut_acin[] = { + { .volt = 4200, .cur = 0, .level = 100}, + { .volt = 4190, .cur = 0, .level = 99}, + { .volt = 4178, .cur = 0, .level = 95}, + { .volt = 4110, .cur = 0, .level = 70}, + { .volt = 4076, .cur = 0, .level = 65}, + { .volt = 4046, .cur = 0, .level = 60}, + { .volt = 4021, .cur = 0, .level = 55}, + { .volt = 3999, .cur = 0, .level = 50}, + { .volt = 3982, .cur = 0, .level = 45}, + { .volt = 3965, .cur = 0, .level = 40}, + { .volt = 3957, .cur = 0, .level = 35}, + { .volt = 3948, .cur = 0, .level = 30}, + { .volt = 3936, .cur = 0, .level = 25}, + { .volt = 3927, .cur = 0, .level = 20}, + { .volt = 3906, .cur = 0, .level = 15}, + { .volt = 3880, .cur = 0, .level = 10}, + { .volt = 3829, .cur = 0, .level = 5}, + { .volt = 3820, .cur = 0, .level = 0}, +}; + +int rx1950_bat_init(void) +{ + int ret; + + ret = gpio_request(S3C2410_GPJ(2), "rx1950-charger-enable-1"); + if (ret) + goto err_gpio1; + ret = gpio_request(S3C2410_GPJ(3), "rx1950-charger-enable-2"); + if (ret) + goto err_gpio2; + + return 0; + +err_gpio2: + gpio_free(S3C2410_GPJ(2)); +err_gpio1: + return ret; +} + +void rx1950_bat_exit(void) +{ + gpio_free(S3C2410_GPJ(2)); + gpio_free(S3C2410_GPJ(3)); +} + +void rx1950_enable_charger(void) +{ + gpio_direction_output(S3C2410_GPJ(2), 1); + gpio_direction_output(S3C2410_GPJ(3), 1); +} + +void rx1950_disable_charger(void) +{ + gpio_direction_output(S3C2410_GPJ(2), 0); + gpio_direction_output(S3C2410_GPJ(3), 0); +} + +static struct s3c_adc_bat_pdata rx1950_bat_cfg = { + .init = rx1950_bat_init, + .exit = rx1950_bat_exit, + .enable_charger = rx1950_enable_charger, + .disable_charger = rx1950_disable_charger, + .gpio_charge_finished = S3C2410_GPF(3), + .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 = 4235, + .current_mult = 2900, + .internal_impedance = 200, +}; + +static struct platform_device rx1950_battery = { + .name = "s3c-adc-battery", + .id = -1, + .dev = { + .parent = &s3c_device_adc.dev, + .platform_data = &rx1950_bat_cfg, + }, +}; + static struct s3c2410fb_mach_info rx1950_lcd_cfg = { .displays = &rx1950_display, .num_displays = 1, @@ -503,6 +661,8 @@ static struct platform_device *rx1950_devices[] __initdata = { &s3c_device_timer[1], &rx1950_backlight, &rx1950_device_gpiokeys, + &power_supply, + &rx1950_battery, }; static struct clk *rx1950_clocks[] __initdata = { |