Initial file dump from open source releaseHEADmaster

1 files changed, 133 insertions, 0 deletions

diff --git a/drivers/power/sprd_charge_ext.c b/drivers/power/sprd_charge_ext.c
new file mode 100644
index 00000000..9d4cad5b
--- /dev/null
+++ b/drivers/power/sprd_charge_ext.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2012 Spreadtrum Communications Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+#ifdef SPRDBAT_TWO_CHARGE_CHANNEL
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <asm/io.h>
+#include <linux/hrtimer.h>
+#include <linux/spinlock.h>
+#include <linux/gpio.h>
+#include <linux/irq.h>
+#include <linux/wakelock.h>
+#include <linux/delay.h>
+#include <mach/hardware.h>
+#include <mach/adi.h>
+#include <mach/adc.h>
+#include <mach/gpio.h>
+#include <linux/device.h>
+
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include "sprd_battery.h"
+#include <mach/usb.h>
+
+struct sprdchg_drivier_data_ext {
+    uint32_t gpio_vchg_ovi;
+    uint32_t irq_vchg_ovi;
+    uint32_t gpio_charge_en;
+    uint32_t gpio_charge_done;
+    struct work_struct ovi_irq_work;
+};
+static struct sprdchg_drivier_data_ext sprdchg_ext_ic;
+
+int sprdchg_is_chg_done_ext(void)
+{
+	return gpio_get_value(sprdchg_ext_ic.gpio_charge_done);
+}
+
+void sprdchg_start_charge_ext(void)
+{
+	gpio_set_value(sprdchg_ext_ic.gpio_charge_en, 0);
+}
+
+void sprdchg_stop_charge_ext(void)
+{
+	gpio_set_value(sprdchg_ext_ic.gpio_charge_en, 1);
+}
+
+void sprdchg_open_ovi_fun_ext(void)
+{
+	irq_set_irq_type(sprdchg_ext_ic.irq_vchg_ovi, IRQ_TYPE_LEVEL_HIGH);
+	enable_irq(sprdchg_ext_ic.irq_vchg_ovi);
+}
+
+void sprdchg_close_ovi_fun_ext(void)
+{
+	disable_irq_nosync(sprdchg_ext_ic.irq_vchg_ovi);
+}
+
+static void sprdchg_ovi_irq_works_ext(struct work_struct *work)
+{
+	int value;
+	value = gpio_get_value(sprdchg_ext_ic.gpio_vchg_ovi);
+	if (value) {
+		sprdbat_charge_event_ext(SPRDBAT_CHG_EVENT_EXT_OVI);
+	} else {
+		sprdbat_charge_event_ext(SPRDBAT_CHG_EVENT_EXT_OVI_RESTART);
+	}
+}
+
+static __used irqreturn_t sprdchg_vchg_ovi_irq_ext(int irq, void *dev_id)
+{
+	int value;
+	value = gpio_get_value(sprdchg_ext_ic.gpio_vchg_ovi);
+	if (value) {
+		printk("sprdchg_vchg_ovi_irq_ext ovi high\n");
+		irq_set_irq_type(sprdchg_ext_ic.irq_vchg_ovi, IRQ_TYPE_LEVEL_LOW);
+	} else {
+		printk("sprdchg_vchg_ovi_irq_ext ovi low\n");
+		irq_set_irq_type(sprdchg_ext_ic.irq_vchg_ovi, IRQ_TYPE_LEVEL_HIGH);
+	}
+	schedule_work(&sprdchg_ext_ic.ovi_irq_work);
+	return IRQ_HANDLED;
+}
+
+int sprdchg_charge_init_ext(struct platform_device *pdev)
+{
+	int ret = -ENODEV;
+	struct resource *res = NULL;
+
+	res = platform_get_resource(pdev, IORESOURCE_IO, 3);
+	sprdchg_ext_ic.gpio_charge_done = res->start;
+	res = platform_get_resource(pdev, IORESOURCE_IO, 4);
+	sprdchg_ext_ic.gpio_charge_en = res->start;
+	res = platform_get_resource(pdev, IORESOURCE_IO, 5);
+	sprdchg_ext_ic.gpio_vchg_ovi = res->start;
+	gpio_request(sprdchg_ext_ic.gpio_vchg_ovi, "vchg_ovi_ext");
+	gpio_direction_input(sprdchg_ext_ic.gpio_vchg_ovi);
+	sprdchg_ext_ic.irq_vchg_ovi = gpio_to_irq(sprdchg_ext_ic.gpio_vchg_ovi);
+	set_irq_flags(sprdchg_ext_ic.irq_vchg_ovi, IRQF_VALID | IRQF_NOAUTOEN);
+	ret = request_irq(sprdchg_ext_ic.irq_vchg_ovi, sprdchg_vchg_ovi_irq_ext,
+		    IRQF_NO_SUSPEND, "sprdbat_vchg_ovi_ext", NULL);
+	INIT_WORK(&sprdchg_ext_ic.ovi_irq_work, sprdchg_ovi_irq_works_ext);
+	gpio_request(sprdchg_ext_ic.gpio_charge_done, "chg_done_ext");
+	gpio_direction_input(sprdchg_ext_ic.gpio_charge_done);
+	gpio_request(sprdchg_ext_ic.gpio_charge_en, "charge_en_ext");
+	gpio_direction_output(sprdchg_ext_ic.gpio_charge_en, 1);
+	sprdchg_stop_charge_ext();
+	return ret;
+}
+
+void sprdchg_chg_monitor_cb_ext(void *data)
+{
+	return;
+}
+
+#endif /*  */