CHERRY-PICK: ARM: EXYNOS4: Support Charger Manager

The configuration is supposed to support Exynos4-NURI. However, we
expect that the configuration is mostly compatible with other Exynos4
platforms.

v2
- Remove undefined field of struct charger_desc (measure_ambient_temp)

Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Change-Id: Ib568676b0af5fb22ca8bae29dcc8f7fb61e492e4
(cherry picked from commits 914a452e6ef714492bbbfafcec389313a044e760
and 27be8be090694878b8ff05a0611a46af0a8fb598
in branch charger-manager-for-next of
git://git.infradead.org/users/kmpark/linux-2.6-samsung)
BUG=chrome-os-partner:10617
TEST=build and boot to kernel prompt on snow
Reviewed-on: https://gerrit.chromium.org/gerrit/40163
Reviewed-by: Sameer Nanda <snanda@chromium.org>
Commit-Queue: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>

diff --git a/arch/arm/mach-exynos/setup-charger.c b/arch/arm/mach-exynos/setup-charger.c
new file mode 100644 (file)
index 0000000..c7b4f1e
--- /dev/null
+++ b/arch/arm/mach-exynos/setup-charger.c
@@ -0,0 +1,109 @@
+/*
+ * linux/arch/arm/mach-s5pv310/charger-slp7.c
+ * COPYRIGHT(C) 2011
+ * MyungJoo Ham <myungjoo.ham@samsung.com>
+ *
+ * SLP7(NURI) Board Charger Support with Charger-Manager Framework
+ *
+ */
+
+#include <asm/io.h>
+
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/ntc_thermistor.h>
+#include <linux/regulator/consumer.h>
+#include <linux/power/charger-manager.h>
+#include <linux/mfd/max8997.h>
+#include <linux/mfd/max8997-private.h>
+
+#include <mach/regs-pmu.h>
+#include <mach/irqs.h>
+
+#include <plat/adc-ntc.h>
+
+/* Temperatures in milli-centigrade */
+#define SECBATTSPEC_TEMP_HIGH          (63 * 1000)
+#define SECBATTSPEC_TEMP_HIGH_REC      (58 * 1000)
+#define SECBATTSPEC_TEMP_LOW           (-5 * 1000)
+#define SECBATTSPEC_TEMP_LOW_REC       (0 * 1000)
+
+static bool s3c_wksrc_rtc_alarm(void)
+{
+       u32 reg = __raw_readl(S5P_WAKEUP_STAT) & S5P_WAKEUP_STAT_WKSRC_MASK;
+
+       if ((reg & S5P_WAKEUP_STAT_RTCALARM) &&
+           !(reg & ~S5P_WAKEUP_STAT_RTCALARM))
+               return true; /* yes, it is */
+
+       return false;
+}
+
+enum temp_stat { TEMP_OK = 0, TEMP_HOT = 1, TEMP_COLD = -1 };
+
+static int ntc_thermistor_ck(int *mC)
+{
+       static enum temp_stat state = TEMP_OK;
+
+       read_s3c_adc_ntc(mC);
+       switch (state) {
+       case TEMP_OK:
+               if (*mC >= SECBATTSPEC_TEMP_HIGH)
+                       state = TEMP_HOT;
+               else if (*mC <= SECBATTSPEC_TEMP_LOW)
+                       state = TEMP_COLD;
+               break;
+       case TEMP_HOT:
+               if (*mC <= SECBATTSPEC_TEMP_LOW)
+                       state = TEMP_COLD;
+               else if (*mC < SECBATTSPEC_TEMP_HIGH_REC)
+                       state = TEMP_OK;
+               break;
+       case TEMP_COLD:
+               if (*mC >= SECBATTSPEC_TEMP_HIGH)
+                       state = TEMP_HOT;
+               else if (*mC > SECBATTSPEC_TEMP_LOW_REC)
+                       state = TEMP_OK;
+               break;
+       default:
+               pr_err("%s has invalid state %d\n", __func__, state);
+       }
+
+       return state;
+}
+
+static char *nuri_charger_stats[] = { "max8997_pmic", "max8903_charger", NULL };
+static struct regulator_bulk_data nuri_chargers[] = {
+       { .supply = "vinchg1", },
+       { .supply = "vinchg2", },
+};
+
+static struct charger_desc nuri_charger_desc = {
+       .psy_name               = "battery",
+       .polling_interval_ms    = 30000,
+       .polling_mode           = CM_POLL_CHARGING_ONLY,
+       .fullbatt_vchkdrop_ms   = 30000,
+       .fullbatt_vchkdrop_uV   = 100000,
+       .fullbatt_uV            = 4200000,
+       .battery_present        = CM_FUEL_GAUGE,
+       .psy_charger_stat       = nuri_charger_stats,
+       .charger_regulators     = nuri_chargers,
+       .num_charger_regulators = ARRAY_SIZE(nuri_chargers),
+       .psy_fuel_gauge         = "max17042_battery",
+
+       .temperature_out_of_range       = ntc_thermistor_ck,
+       .measure_battery_temp   = false,
+};
+
+struct charger_global_desc nuri_charger_g_desc = {
+       .rtc_name = "rtc0",
+       .rtc_only_wakeup = s3c_wksrc_rtc_alarm,
+       .assume_timer_stops_in_suspend  = true,
+};
+
+struct platform_device nuri_charger_manager = {
+       .name                   = "charger-manager",
+       .dev                    = {
+               .platform_data = &nuri_charger_desc,
+       },
+};

diff --git a/arch/arm/mach-exynos/setup-charger.h b/arch/arm/mach-exynos/setup-charger.h
new file mode 100644 (file)
index 0000000..9ec77a4
--- /dev/null
+++ b/arch/arm/mach-exynos/setup-charger.h
@@ -0,0 +1,8 @@
+#ifndef __SETUP_CHARGER_H
+#define __SETUP_CHARGER_H __FILE__
+
+extern void nuri_chg_irqs_set_base(int pmic_base, int fuel_gauge_base);
+extern struct platform_device nuri_charger_manager;
+extern struct charger_global_desc nuri_charger_g_desc;
+
+#endif /* __SETUP_CHARGER_H */