Initial import

1 files changed, 428 insertions, 0 deletions

diff --git a/drivers/mfd/da9055-core.c b/drivers/mfd/da9055-core.c
new file mode 100644
index 000000000..b4d920c1e
--- /dev/null
+++ b/drivers/mfd/da9055-core.c
@@ -0,0 +1,428 @@
+/*
+ * Device access for Dialog DA9055 PMICs.
+ *
+ * Copyright(c) 2012 Dialog Semiconductor Ltd.
+ *
+ * Author: David Dajun Chen <dchen@diasemi.com>
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/irq.h>
+#include <linux/mutex.h>
+
+#include <linux/mfd/core.h>
+#include <linux/mfd/da9055/core.h>
+#include <linux/mfd/da9055/pdata.h>
+#include <linux/mfd/da9055/reg.h>
+
+#define DA9055_IRQ_NONKEY_MASK		0x01
+#define DA9055_IRQ_ALM_MASK		0x02
+#define DA9055_IRQ_TICK_MASK		0x04
+#define DA9055_IRQ_ADC_MASK		0x08
+#define DA9055_IRQ_BUCK_ILIM_MASK	0x08
+
+static bool da9055_register_readable(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case DA9055_REG_STATUS_A:
+	case DA9055_REG_STATUS_B:
+	case DA9055_REG_EVENT_A:
+	case DA9055_REG_EVENT_B:
+	case DA9055_REG_EVENT_C:
+	case DA9055_REG_IRQ_MASK_A:
+	case DA9055_REG_IRQ_MASK_B:
+	case DA9055_REG_IRQ_MASK_C:
+
+	case DA9055_REG_CONTROL_A:
+	case DA9055_REG_CONTROL_B:
+	case DA9055_REG_CONTROL_C:
+	case DA9055_REG_CONTROL_D:
+	case DA9055_REG_CONTROL_E:
+
+	case DA9055_REG_ADC_MAN:
+	case DA9055_REG_ADC_CONT:
+	case DA9055_REG_VSYS_MON:
+	case DA9055_REG_ADC_RES_L:
+	case DA9055_REG_ADC_RES_H:
+	case DA9055_REG_VSYS_RES:
+	case DA9055_REG_ADCIN1_RES:
+	case DA9055_REG_ADCIN2_RES:
+	case DA9055_REG_ADCIN3_RES:
+
+	case DA9055_REG_COUNT_S:
+	case DA9055_REG_COUNT_MI:
+	case DA9055_REG_COUNT_H:
+	case DA9055_REG_COUNT_D:
+	case DA9055_REG_COUNT_MO:
+	case DA9055_REG_COUNT_Y:
+	case DA9055_REG_ALARM_H:
+	case DA9055_REG_ALARM_D:
+	case DA9055_REG_ALARM_MI:
+	case DA9055_REG_ALARM_MO:
+	case DA9055_REG_ALARM_Y:
+
+	case DA9055_REG_GPIO0_1:
+	case DA9055_REG_GPIO2:
+	case DA9055_REG_GPIO_MODE0_2:
+
+	case DA9055_REG_BCORE_CONT:
+	case DA9055_REG_BMEM_CONT:
+	case DA9055_REG_LDO1_CONT:
+	case DA9055_REG_LDO2_CONT:
+	case DA9055_REG_LDO3_CONT:
+	case DA9055_REG_LDO4_CONT:
+	case DA9055_REG_LDO5_CONT:
+	case DA9055_REG_LDO6_CONT:
+	case DA9055_REG_BUCK_LIM:
+	case DA9055_REG_BCORE_MODE:
+	case DA9055_REG_VBCORE_A:
+	case DA9055_REG_VBMEM_A:
+	case DA9055_REG_VLDO1_A:
+	case DA9055_REG_VLDO2_A:
+	case DA9055_REG_VLDO3_A:
+	case DA9055_REG_VLDO4_A:
+	case DA9055_REG_VLDO5_A:
+	case DA9055_REG_VLDO6_A:
+	case DA9055_REG_VBCORE_B:
+	case DA9055_REG_VBMEM_B:
+	case DA9055_REG_VLDO1_B:
+	case DA9055_REG_VLDO2_B:
+	case DA9055_REG_VLDO3_B:
+	case DA9055_REG_VLDO4_B:
+	case DA9055_REG_VLDO5_B:
+	case DA9055_REG_VLDO6_B:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool da9055_register_writeable(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case DA9055_REG_STATUS_A:
+	case DA9055_REG_STATUS_B:
+	case DA9055_REG_EVENT_A:
+	case DA9055_REG_EVENT_B:
+	case DA9055_REG_EVENT_C:
+	case DA9055_REG_IRQ_MASK_A:
+	case DA9055_REG_IRQ_MASK_B:
+	case DA9055_REG_IRQ_MASK_C:
+
+	case DA9055_REG_CONTROL_A:
+	case DA9055_REG_CONTROL_B:
+	case DA9055_REG_CONTROL_C:
+	case DA9055_REG_CONTROL_D:
+	case DA9055_REG_CONTROL_E:
+
+	case DA9055_REG_ADC_MAN:
+	case DA9055_REG_ADC_CONT:
+	case DA9055_REG_VSYS_MON:
+	case DA9055_REG_ADC_RES_L:
+	case DA9055_REG_ADC_RES_H:
+	case DA9055_REG_VSYS_RES:
+	case DA9055_REG_ADCIN1_RES:
+	case DA9055_REG_ADCIN2_RES:
+	case DA9055_REG_ADCIN3_RES:
+
+	case DA9055_REG_COUNT_S:
+	case DA9055_REG_COUNT_MI:
+	case DA9055_REG_COUNT_H:
+	case DA9055_REG_COUNT_D:
+	case DA9055_REG_COUNT_MO:
+	case DA9055_REG_COUNT_Y:
+	case DA9055_REG_ALARM_H:
+	case DA9055_REG_ALARM_D:
+	case DA9055_REG_ALARM_MI:
+	case DA9055_REG_ALARM_MO:
+	case DA9055_REG_ALARM_Y:
+
+	case DA9055_REG_GPIO0_1:
+	case DA9055_REG_GPIO2:
+	case DA9055_REG_GPIO_MODE0_2:
+
+	case DA9055_REG_BCORE_CONT:
+	case DA9055_REG_BMEM_CONT:
+	case DA9055_REG_LDO1_CONT:
+	case DA9055_REG_LDO2_CONT:
+	case DA9055_REG_LDO3_CONT:
+	case DA9055_REG_LDO4_CONT:
+	case DA9055_REG_LDO5_CONT:
+	case DA9055_REG_LDO6_CONT:
+	case DA9055_REG_BUCK_LIM:
+	case DA9055_REG_BCORE_MODE:
+	case DA9055_REG_VBCORE_A:
+	case DA9055_REG_VBMEM_A:
+	case DA9055_REG_VLDO1_A:
+	case DA9055_REG_VLDO2_A:
+	case DA9055_REG_VLDO3_A:
+	case DA9055_REG_VLDO4_A:
+	case DA9055_REG_VLDO5_A:
+	case DA9055_REG_VLDO6_A:
+	case DA9055_REG_VBCORE_B:
+	case DA9055_REG_VBMEM_B:
+	case DA9055_REG_VLDO1_B:
+	case DA9055_REG_VLDO2_B:
+	case DA9055_REG_VLDO3_B:
+	case DA9055_REG_VLDO4_B:
+	case DA9055_REG_VLDO5_B:
+	case DA9055_REG_VLDO6_B:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool da9055_register_volatile(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case DA9055_REG_STATUS_A:
+	case DA9055_REG_STATUS_B:
+	case DA9055_REG_EVENT_A:
+	case DA9055_REG_EVENT_B:
+	case DA9055_REG_EVENT_C:
+
+	case DA9055_REG_CONTROL_A:
+	case DA9055_REG_CONTROL_E:
+
+	case DA9055_REG_ADC_MAN:
+	case DA9055_REG_ADC_RES_L:
+	case DA9055_REG_ADC_RES_H:
+	case DA9055_REG_VSYS_RES:
+	case DA9055_REG_ADCIN1_RES:
+	case DA9055_REG_ADCIN2_RES:
+	case DA9055_REG_ADCIN3_RES:
+
+	case DA9055_REG_COUNT_S:
+	case DA9055_REG_COUNT_MI:
+	case DA9055_REG_COUNT_H:
+	case DA9055_REG_COUNT_D:
+	case DA9055_REG_COUNT_MO:
+	case DA9055_REG_COUNT_Y:
+	case DA9055_REG_ALARM_MI:
+
+	case DA9055_REG_BCORE_CONT:
+	case DA9055_REG_BMEM_CONT:
+	case DA9055_REG_LDO1_CONT:
+	case DA9055_REG_LDO2_CONT:
+	case DA9055_REG_LDO3_CONT:
+	case DA9055_REG_LDO4_CONT:
+	case DA9055_REG_LDO5_CONT:
+	case DA9055_REG_LDO6_CONT:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static struct regmap_irq da9055_irqs[] = {
+	[DA9055_IRQ_NONKEY] = {
+		.reg_offset = 0,
+		.mask = DA9055_IRQ_NONKEY_MASK,
+	},
+	[DA9055_IRQ_ALARM] = {
+		.reg_offset = 0,
+		.mask = DA9055_IRQ_ALM_MASK,
+	},
+	[DA9055_IRQ_TICK] = {
+		.reg_offset = 0,
+		.mask = DA9055_IRQ_TICK_MASK,
+	},
+	[DA9055_IRQ_HWMON] = {
+		.reg_offset = 0,
+		.mask = DA9055_IRQ_ADC_MASK,
+	},
+	[DA9055_IRQ_REGULATOR] = {
+		.reg_offset = 1,
+		.mask = DA9055_IRQ_BUCK_ILIM_MASK,
+	},
+};
+
+struct regmap_config da9055_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.cache_type = REGCACHE_RBTREE,
+
+	.max_register = DA9055_MAX_REGISTER_CNT,
+	.readable_reg = da9055_register_readable,
+	.writeable_reg = da9055_register_writeable,
+	.volatile_reg = da9055_register_volatile,
+};
+EXPORT_SYMBOL_GPL(da9055_regmap_config);
+
+static struct resource da9055_onkey_resource = {
+	.name = "ONKEY",
+	.start = DA9055_IRQ_NONKEY,
+	.end   = DA9055_IRQ_NONKEY,
+	.flags = IORESOURCE_IRQ,
+};
+
+static struct resource da9055_rtc_resource[] = {
+	{
+		.name = "ALM",
+		.start = DA9055_IRQ_ALARM,
+		.end   = DA9055_IRQ_ALARM,
+		.flags = IORESOURCE_IRQ,
+	},
+	{
+		.name = "TICK",
+		.start = DA9055_IRQ_TICK,
+		.end   = DA9055_IRQ_TICK,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+static struct resource da9055_hwmon_resource = {
+	.name = "HWMON",
+	.start = DA9055_IRQ_HWMON,
+	.end   = DA9055_IRQ_HWMON,
+	.flags = IORESOURCE_IRQ,
+};
+
+static struct resource da9055_ld05_6_resource = {
+	.name = "REGULATOR",
+	.start = DA9055_IRQ_REGULATOR,
+	.end   = DA9055_IRQ_REGULATOR,
+	.flags = IORESOURCE_IRQ,
+};
+
+static const struct mfd_cell da9055_devs[] = {
+	{
+		.of_compatible = "dlg,da9055-gpio",
+		.name = "da9055-gpio",
+	},
+	{
+		.of_compatible = "dlg,da9055-regulator",
+		.name = "da9055-regulator",
+		.id = 1,
+	},
+	{
+		.of_compatible = "dlg,da9055-regulator",
+		.name = "da9055-regulator",
+		.id = 2,
+	},
+	{
+		.of_compatible = "dlg,da9055-regulator",
+		.name = "da9055-regulator",
+		.id = 3,
+	},
+	{
+		.of_compatible = "dlg,da9055-regulator",
+		.name = "da9055-regulator",
+		.id = 4,
+	},
+	{
+		.of_compatible = "dlg,da9055-regulator",
+		.name = "da9055-regulator",
+		.id = 5,
+	},
+	{
+		.of_compatible = "dlg,da9055-regulator",
+		.name = "da9055-regulator",
+		.id = 6,
+	},
+	{
+		.of_compatible = "dlg,da9055-regulator",
+		.name = "da9055-regulator",
+		.id = 7,
+		.resources = &da9055_ld05_6_resource,
+		.num_resources = 1,
+	},
+	{
+		.of_compatible = "dlg,da9055-regulator",
+		.name = "da9055-regulator",
+		.resources = &da9055_ld05_6_resource,
+		.num_resources = 1,
+		.id = 8,
+	},
+	{
+		.of_compatible = "dlg,da9055-onkey",
+		.name = "da9055-onkey",
+		.resources = &da9055_onkey_resource,
+		.num_resources = 1,
+	},
+	{
+		.of_compatible = "dlg,da9055-rtc",
+		.name = "da9055-rtc",
+		.resources = da9055_rtc_resource,
+		.num_resources = ARRAY_SIZE(da9055_rtc_resource),
+	},
+	{
+		.of_compatible = "dlg,da9055-hwmon",
+		.name = "da9055-hwmon",
+		.resources = &da9055_hwmon_resource,
+		.num_resources = 1,
+	},
+	{
+		.of_compatible = "dlg,da9055-watchdog",
+		.name = "da9055-watchdog",
+	},
+};
+
+static struct regmap_irq_chip da9055_regmap_irq_chip = {
+	.name = "da9055_irq",
+	.status_base = DA9055_REG_EVENT_A,
+	.mask_base = DA9055_REG_IRQ_MASK_A,
+	.ack_base = DA9055_REG_EVENT_A,
+	.num_regs = 3,
+	.irqs = da9055_irqs,
+	.num_irqs = ARRAY_SIZE(da9055_irqs),
+};
+
+int da9055_device_init(struct da9055 *da9055)
+{
+	struct da9055_pdata *pdata = dev_get_platdata(da9055->dev);
+	int ret;
+	uint8_t clear_events[3] = {0xFF, 0xFF, 0xFF};
+
+	if (pdata && pdata->init != NULL)
+		pdata->init(da9055);
+
+	if (!pdata || !pdata->irq_base)
+		da9055->irq_base = -1;
+	else
+		da9055->irq_base = pdata->irq_base;
+
+	ret = da9055_group_write(da9055, DA9055_REG_EVENT_A, 3, clear_events);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_add_irq_chip(da9055->regmap, da9055->chip_irq,
+				  IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+				  da9055->irq_base, &da9055_regmap_irq_chip,
+				  &da9055->irq_data);
+	if (ret < 0)
+		return ret;
+
+	da9055->irq_base = regmap_irq_chip_get_base(da9055->irq_data);
+
+	ret = mfd_add_devices(da9055->dev, -1,
+			      da9055_devs, ARRAY_SIZE(da9055_devs),
+			      NULL, da9055->irq_base, NULL);
+	if (ret)
+		goto err;
+
+	return 0;
+
+err:
+	mfd_remove_devices(da9055->dev);
+	return ret;
+}
+
+void da9055_device_exit(struct da9055 *da9055)
+{
+	regmap_del_irq_chip(da9055->chip_irq, da9055->irq_data);
+	mfd_remove_devices(da9055->dev);
+}
+
+MODULE_DESCRIPTION("Core support for the DA9055 PMIC");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");