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>

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 = {