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path: root/drivers/mfd/max8925-core.c
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Diffstat (limited to 'drivers/mfd/max8925-core.c')
-rw-r--r--drivers/mfd/max8925-core.c656
1 files changed, 656 insertions, 0 deletions
diff --git a/drivers/mfd/max8925-core.c b/drivers/mfd/max8925-core.c
new file mode 100644
index 000000000000..85d63c04749b
--- /dev/null
+++ b/drivers/mfd/max8925-core.c
@@ -0,0 +1,656 @@
+/*
+ * Base driver for Maxim MAX8925
+ *
+ * Copyright (C) 2009-2010 Marvell International Ltd.
+ * Haojian Zhuang <haojian.zhuang@marvell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/max8925.h>
+
+static struct resource backlight_resources[] = {
+ {
+ .name = "max8925-backlight",
+ .start = MAX8925_WLED_MODE_CNTL,
+ .end = MAX8925_WLED_CNTL,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct mfd_cell backlight_devs[] = {
+ {
+ .name = "max8925-backlight",
+ .num_resources = 1,
+ .resources = &backlight_resources[0],
+ .id = -1,
+ },
+};
+
+static struct resource touch_resources[] = {
+ {
+ .name = "max8925-tsc",
+ .start = MAX8925_TSC_IRQ,
+ .end = MAX8925_ADC_RES_END,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct mfd_cell touch_devs[] = {
+ {
+ .name = "max8925-touch",
+ .num_resources = 1,
+ .resources = &touch_resources[0],
+ .id = -1,
+ },
+};
+
+static struct resource power_supply_resources[] = {
+ {
+ .name = "max8925-power",
+ .start = MAX8925_CHG_IRQ1,
+ .end = MAX8925_CHG_IRQ1_MASK,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct mfd_cell power_devs[] = {
+ {
+ .name = "max8925-power",
+ .num_resources = 1,
+ .resources = &power_supply_resources[0],
+ .id = -1,
+ },
+};
+
+static struct resource rtc_resources[] = {
+ {
+ .name = "max8925-rtc",
+ .start = MAX8925_RTC_IRQ,
+ .end = MAX8925_RTC_IRQ_MASK,
+ .flags = IORESOURCE_IO,
+ },
+};
+
+static struct mfd_cell rtc_devs[] = {
+ {
+ .name = "max8925-rtc",
+ .num_resources = 1,
+ .resources = &rtc_resources[0],
+ .id = -1,
+ },
+};
+
+#define MAX8925_REG_RESOURCE(_start, _end) \
+{ \
+ .start = MAX8925_##_start, \
+ .end = MAX8925_##_end, \
+ .flags = IORESOURCE_IO, \
+}
+
+static struct resource regulator_resources[] = {
+ MAX8925_REG_RESOURCE(SDCTL1, SDCTL1),
+ MAX8925_REG_RESOURCE(SDCTL2, SDCTL2),
+ MAX8925_REG_RESOURCE(SDCTL3, SDCTL3),
+ MAX8925_REG_RESOURCE(LDOCTL1, LDOCTL1),
+ MAX8925_REG_RESOURCE(LDOCTL2, LDOCTL2),
+ MAX8925_REG_RESOURCE(LDOCTL3, LDOCTL3),
+ MAX8925_REG_RESOURCE(LDOCTL4, LDOCTL4),
+ MAX8925_REG_RESOURCE(LDOCTL5, LDOCTL5),
+ MAX8925_REG_RESOURCE(LDOCTL6, LDOCTL6),
+ MAX8925_REG_RESOURCE(LDOCTL7, LDOCTL7),
+ MAX8925_REG_RESOURCE(LDOCTL8, LDOCTL8),
+ MAX8925_REG_RESOURCE(LDOCTL9, LDOCTL9),
+ MAX8925_REG_RESOURCE(LDOCTL10, LDOCTL10),
+ MAX8925_REG_RESOURCE(LDOCTL11, LDOCTL11),
+ MAX8925_REG_RESOURCE(LDOCTL12, LDOCTL12),
+ MAX8925_REG_RESOURCE(LDOCTL13, LDOCTL13),
+ MAX8925_REG_RESOURCE(LDOCTL14, LDOCTL14),
+ MAX8925_REG_RESOURCE(LDOCTL15, LDOCTL15),
+ MAX8925_REG_RESOURCE(LDOCTL16, LDOCTL16),
+ MAX8925_REG_RESOURCE(LDOCTL17, LDOCTL17),
+ MAX8925_REG_RESOURCE(LDOCTL18, LDOCTL18),
+ MAX8925_REG_RESOURCE(LDOCTL19, LDOCTL19),
+ MAX8925_REG_RESOURCE(LDOCTL20, LDOCTL20),
+};
+
+#define MAX8925_REG_DEVS(_id) \
+{ \
+ .name = "max8925-regulator", \
+ .num_resources = 1, \
+ .resources = &regulator_resources[MAX8925_ID_##_id], \
+ .id = MAX8925_ID_##_id, \
+}
+
+static struct mfd_cell regulator_devs[] = {
+ MAX8925_REG_DEVS(SD1),
+ MAX8925_REG_DEVS(SD2),
+ MAX8925_REG_DEVS(SD3),
+ MAX8925_REG_DEVS(LDO1),
+ MAX8925_REG_DEVS(LDO2),
+ MAX8925_REG_DEVS(LDO3),
+ MAX8925_REG_DEVS(LDO4),
+ MAX8925_REG_DEVS(LDO5),
+ MAX8925_REG_DEVS(LDO6),
+ MAX8925_REG_DEVS(LDO7),
+ MAX8925_REG_DEVS(LDO8),
+ MAX8925_REG_DEVS(LDO9),
+ MAX8925_REG_DEVS(LDO10),
+ MAX8925_REG_DEVS(LDO11),
+ MAX8925_REG_DEVS(LDO12),
+ MAX8925_REG_DEVS(LDO13),
+ MAX8925_REG_DEVS(LDO14),
+ MAX8925_REG_DEVS(LDO15),
+ MAX8925_REG_DEVS(LDO16),
+ MAX8925_REG_DEVS(LDO17),
+ MAX8925_REG_DEVS(LDO18),
+ MAX8925_REG_DEVS(LDO19),
+ MAX8925_REG_DEVS(LDO20),
+};
+
+enum {
+ FLAGS_ADC = 1, /* register in ADC component */
+ FLAGS_RTC, /* register in RTC component */
+};
+
+struct max8925_irq_data {
+ int reg;
+ int mask_reg;
+ int enable; /* enable or not */
+ int offs; /* bit offset in mask register */
+ int flags;
+ int tsc_irq;
+};
+
+static struct max8925_irq_data max8925_irqs[] = {
+ [MAX8925_IRQ_VCHG_DC_OVP] = {
+ .reg = MAX8925_CHG_IRQ1,
+ .mask_reg = MAX8925_CHG_IRQ1_MASK,
+ .offs = 1 << 0,
+ },
+ [MAX8925_IRQ_VCHG_DC_F] = {
+ .reg = MAX8925_CHG_IRQ1,
+ .mask_reg = MAX8925_CHG_IRQ1_MASK,
+ .offs = 1 << 1,
+ },
+ [MAX8925_IRQ_VCHG_DC_R] = {
+ .reg = MAX8925_CHG_IRQ1,
+ .mask_reg = MAX8925_CHG_IRQ1_MASK,
+ .offs = 1 << 2,
+ },
+ [MAX8925_IRQ_VCHG_USB_OVP] = {
+ .reg = MAX8925_CHG_IRQ1,
+ .mask_reg = MAX8925_CHG_IRQ1_MASK,
+ .offs = 1 << 3,
+ },
+ [MAX8925_IRQ_VCHG_USB_F] = {
+ .reg = MAX8925_CHG_IRQ1,
+ .mask_reg = MAX8925_CHG_IRQ1_MASK,
+ .offs = 1 << 4,
+ },
+ [MAX8925_IRQ_VCHG_USB_R] = {
+ .reg = MAX8925_CHG_IRQ1,
+ .mask_reg = MAX8925_CHG_IRQ1_MASK,
+ .offs = 1 << 5,
+ },
+ [MAX8925_IRQ_VCHG_THM_OK_R] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 0,
+ },
+ [MAX8925_IRQ_VCHG_THM_OK_F] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 1,
+ },
+ [MAX8925_IRQ_VCHG_SYSLOW_F] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 2,
+ },
+ [MAX8925_IRQ_VCHG_SYSLOW_R] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 3,
+ },
+ [MAX8925_IRQ_VCHG_RST] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 4,
+ },
+ [MAX8925_IRQ_VCHG_DONE] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 5,
+ },
+ [MAX8925_IRQ_VCHG_TOPOFF] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 6,
+ },
+ [MAX8925_IRQ_VCHG_TMR_FAULT] = {
+ .reg = MAX8925_CHG_IRQ2,
+ .mask_reg = MAX8925_CHG_IRQ2_MASK,
+ .offs = 1 << 7,
+ },
+ [MAX8925_IRQ_GPM_RSTIN] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 0,
+ },
+ [MAX8925_IRQ_GPM_MPL] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 1,
+ },
+ [MAX8925_IRQ_GPM_SW_3SEC] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 2,
+ },
+ [MAX8925_IRQ_GPM_EXTON_F] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 3,
+ },
+ [MAX8925_IRQ_GPM_EXTON_R] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 4,
+ },
+ [MAX8925_IRQ_GPM_SW_1SEC] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 5,
+ },
+ [MAX8925_IRQ_GPM_SW_F] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 6,
+ },
+ [MAX8925_IRQ_GPM_SW_R] = {
+ .reg = MAX8925_ON_OFF_IRQ1,
+ .mask_reg = MAX8925_ON_OFF_IRQ1_MASK,
+ .offs = 1 << 7,
+ },
+ [MAX8925_IRQ_GPM_SYSCKEN_F] = {
+ .reg = MAX8925_ON_OFF_IRQ2,
+ .mask_reg = MAX8925_ON_OFF_IRQ2_MASK,
+ .offs = 1 << 0,
+ },
+ [MAX8925_IRQ_GPM_SYSCKEN_R] = {
+ .reg = MAX8925_ON_OFF_IRQ2,
+ .mask_reg = MAX8925_ON_OFF_IRQ2_MASK,
+ .offs = 1 << 1,
+ },
+ [MAX8925_IRQ_RTC_ALARM1] = {
+ .reg = MAX8925_RTC_IRQ,
+ .mask_reg = MAX8925_RTC_IRQ_MASK,
+ .offs = 1 << 2,
+ .flags = FLAGS_RTC,
+ },
+ [MAX8925_IRQ_RTC_ALARM0] = {
+ .reg = MAX8925_RTC_IRQ,
+ .mask_reg = MAX8925_RTC_IRQ_MASK,
+ .offs = 1 << 3,
+ .flags = FLAGS_RTC,
+ },
+ [MAX8925_IRQ_TSC_STICK] = {
+ .reg = MAX8925_TSC_IRQ,
+ .mask_reg = MAX8925_TSC_IRQ_MASK,
+ .offs = 1 << 0,
+ .flags = FLAGS_ADC,
+ .tsc_irq = 1,
+ },
+ [MAX8925_IRQ_TSC_NSTICK] = {
+ .reg = MAX8925_TSC_IRQ,
+ .mask_reg = MAX8925_TSC_IRQ_MASK,
+ .offs = 1 << 1,
+ .flags = FLAGS_ADC,
+ .tsc_irq = 1,
+ },
+};
+
+static inline struct max8925_irq_data *irq_to_max8925(struct max8925_chip *chip,
+ int irq)
+{
+ return &max8925_irqs[irq - chip->irq_base];
+}
+
+static irqreturn_t max8925_irq(int irq, void *data)
+{
+ struct max8925_chip *chip = data;
+ struct max8925_irq_data *irq_data;
+ struct i2c_client *i2c;
+ int read_reg = -1, value = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
+ irq_data = &max8925_irqs[i];
+ /* TSC IRQ should be serviced in max8925_tsc_irq() */
+ if (irq_data->tsc_irq)
+ continue;
+ if (irq_data->flags == FLAGS_RTC)
+ i2c = chip->rtc;
+ else if (irq_data->flags == FLAGS_ADC)
+ i2c = chip->adc;
+ else
+ i2c = chip->i2c;
+ if (read_reg != irq_data->reg) {
+ read_reg = irq_data->reg;
+ value = max8925_reg_read(i2c, irq_data->reg);
+ }
+ if (value & irq_data->enable)
+ handle_nested_irq(chip->irq_base + i);
+ }
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t max8925_tsc_irq(int irq, void *data)
+{
+ struct max8925_chip *chip = data;
+ struct max8925_irq_data *irq_data;
+ struct i2c_client *i2c;
+ int read_reg = -1, value = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
+ irq_data = &max8925_irqs[i];
+ /* non TSC IRQ should be serviced in max8925_irq() */
+ if (!irq_data->tsc_irq)
+ continue;
+ if (irq_data->flags == FLAGS_RTC)
+ i2c = chip->rtc;
+ else if (irq_data->flags == FLAGS_ADC)
+ i2c = chip->adc;
+ else
+ i2c = chip->i2c;
+ if (read_reg != irq_data->reg) {
+ read_reg = irq_data->reg;
+ value = max8925_reg_read(i2c, irq_data->reg);
+ }
+ if (value & irq_data->enable)
+ handle_nested_irq(chip->irq_base + i);
+ }
+ return IRQ_HANDLED;
+}
+
+static void max8925_irq_lock(unsigned int irq)
+{
+ struct max8925_chip *chip = get_irq_chip_data(irq);
+
+ mutex_lock(&chip->irq_lock);
+}
+
+static void max8925_irq_sync_unlock(unsigned int irq)
+{
+ struct max8925_chip *chip = get_irq_chip_data(irq);
+ struct max8925_irq_data *irq_data;
+ static unsigned char cache_chg[2] = {0xff, 0xff};
+ static unsigned char cache_on[2] = {0xff, 0xff};
+ static unsigned char cache_rtc = 0xff, cache_tsc = 0xff;
+ unsigned char irq_chg[2], irq_on[2];
+ unsigned char irq_rtc, irq_tsc;
+ int i;
+
+ /* Load cached value. In initial, all IRQs are masked */
+ irq_chg[0] = cache_chg[0];
+ irq_chg[1] = cache_chg[1];
+ irq_on[0] = cache_on[0];
+ irq_on[1] = cache_on[1];
+ irq_rtc = cache_rtc;
+ irq_tsc = cache_tsc;
+ for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
+ irq_data = &max8925_irqs[i];
+ switch (irq_data->mask_reg) {
+ case MAX8925_CHG_IRQ1_MASK:
+ irq_chg[0] &= irq_data->enable;
+ break;
+ case MAX8925_CHG_IRQ2_MASK:
+ irq_chg[1] &= irq_data->enable;
+ break;
+ case MAX8925_ON_OFF_IRQ1_MASK:
+ irq_on[0] &= irq_data->enable;
+ break;
+ case MAX8925_ON_OFF_IRQ2_MASK:
+ irq_on[1] &= irq_data->enable;
+ break;
+ case MAX8925_RTC_IRQ_MASK:
+ irq_rtc &= irq_data->enable;
+ break;
+ case MAX8925_TSC_IRQ_MASK:
+ irq_tsc &= irq_data->enable;
+ break;
+ default:
+ dev_err(chip->dev, "wrong IRQ\n");
+ break;
+ }
+ }
+ /* update mask into registers */
+ if (cache_chg[0] != irq_chg[0]) {
+ cache_chg[0] = irq_chg[0];
+ max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ1_MASK,
+ irq_chg[0]);
+ }
+ if (cache_chg[1] != irq_chg[1]) {
+ cache_chg[1] = irq_chg[1];
+ max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ2_MASK,
+ irq_chg[1]);
+ }
+ if (cache_on[0] != irq_on[0]) {
+ cache_on[0] = irq_on[0];
+ max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ1_MASK,
+ irq_on[0]);
+ }
+ if (cache_on[1] != irq_on[1]) {
+ cache_on[1] = irq_on[1];
+ max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ2_MASK,
+ irq_on[1]);
+ }
+ if (cache_rtc != irq_rtc) {
+ cache_rtc = irq_rtc;
+ max8925_reg_write(chip->rtc, MAX8925_RTC_IRQ_MASK, irq_rtc);
+ }
+ if (cache_tsc != irq_tsc) {
+ cache_tsc = irq_tsc;
+ max8925_reg_write(chip->adc, MAX8925_TSC_IRQ_MASK, irq_tsc);
+ }
+
+ mutex_unlock(&chip->irq_lock);
+}
+
+static void max8925_irq_enable(unsigned int irq)
+{
+ struct max8925_chip *chip = get_irq_chip_data(irq);
+ max8925_irqs[irq - chip->irq_base].enable
+ = max8925_irqs[irq - chip->irq_base].offs;
+}
+
+static void max8925_irq_disable(unsigned int irq)
+{
+ struct max8925_chip *chip = get_irq_chip_data(irq);
+ max8925_irqs[irq - chip->irq_base].enable = 0;
+}
+
+static struct irq_chip max8925_irq_chip = {
+ .name = "max8925",
+ .bus_lock = max8925_irq_lock,
+ .bus_sync_unlock = max8925_irq_sync_unlock,
+ .enable = max8925_irq_enable,
+ .disable = max8925_irq_disable,
+};
+
+static int max8925_irq_init(struct max8925_chip *chip, int irq,
+ struct max8925_platform_data *pdata)
+{
+ unsigned long flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
+ struct irq_desc *desc;
+ int i, ret;
+ int __irq;
+
+ if (!pdata || !pdata->irq_base) {
+ dev_warn(chip->dev, "No interrupt support on IRQ base\n");
+ return -EINVAL;
+ }
+ /* clear all interrupts */
+ max8925_reg_read(chip->i2c, MAX8925_CHG_IRQ1);
+ max8925_reg_read(chip->i2c, MAX8925_CHG_IRQ2);
+ max8925_reg_read(chip->i2c, MAX8925_ON_OFF_IRQ1);
+ max8925_reg_read(chip->i2c, MAX8925_ON_OFF_IRQ2);
+ max8925_reg_read(chip->rtc, MAX8925_RTC_IRQ);
+ max8925_reg_read(chip->adc, MAX8925_TSC_IRQ);
+ /* mask all interrupts */
+ max8925_reg_write(chip->rtc, MAX8925_ALARM0_CNTL, 0);
+ max8925_reg_write(chip->rtc, MAX8925_ALARM1_CNTL, 0);
+ max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ1_MASK, 0xff);
+ max8925_reg_write(chip->i2c, MAX8925_CHG_IRQ2_MASK, 0xff);
+ max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ1_MASK, 0xff);
+ max8925_reg_write(chip->i2c, MAX8925_ON_OFF_IRQ2_MASK, 0xff);
+ max8925_reg_write(chip->rtc, MAX8925_RTC_IRQ_MASK, 0xff);
+ max8925_reg_write(chip->adc, MAX8925_TSC_IRQ_MASK, 0xff);
+
+ mutex_init(&chip->irq_lock);
+ chip->core_irq = irq;
+ chip->irq_base = pdata->irq_base;
+ desc = irq_to_desc(chip->core_irq);
+
+ /* register with genirq */
+ for (i = 0; i < ARRAY_SIZE(max8925_irqs); i++) {
+ __irq = i + chip->irq_base;
+ set_irq_chip_data(__irq, chip);
+ set_irq_chip_and_handler(__irq, &max8925_irq_chip,
+ handle_edge_irq);
+ set_irq_nested_thread(__irq, 1);
+#ifdef CONFIG_ARM
+ set_irq_flags(__irq, IRQF_VALID);
+#else
+ set_irq_noprobe(__irq);
+#endif
+ }
+ if (!irq) {
+ dev_warn(chip->dev, "No interrupt support on core IRQ\n");
+ goto tsc_irq;
+ }
+
+ ret = request_threaded_irq(irq, NULL, max8925_irq, flags,
+ "max8925", chip);
+ if (ret) {
+ dev_err(chip->dev, "Failed to request core IRQ: %d\n", ret);
+ chip->core_irq = 0;
+ }
+tsc_irq:
+ if (!pdata->tsc_irq) {
+ dev_warn(chip->dev, "No interrupt support on TSC IRQ\n");
+ return 0;
+ }
+ chip->tsc_irq = pdata->tsc_irq;
+
+ ret = request_threaded_irq(chip->tsc_irq, NULL, max8925_tsc_irq,
+ flags, "max8925-tsc", chip);
+ if (ret) {
+ dev_err(chip->dev, "Failed to request TSC IRQ: %d\n", ret);
+ chip->tsc_irq = 0;
+ }
+ return 0;
+}
+
+int __devinit max8925_device_init(struct max8925_chip *chip,
+ struct max8925_platform_data *pdata)
+{
+ int ret;
+
+ max8925_irq_init(chip, chip->i2c->irq, pdata);
+
+ if (pdata && (pdata->power || pdata->touch)) {
+ /* enable ADC to control internal reference */
+ max8925_set_bits(chip->i2c, MAX8925_RESET_CNFG, 1, 1);
+ /* enable internal reference for ADC */
+ max8925_set_bits(chip->adc, MAX8925_TSC_CNFG1, 3, 2);
+ /* check for internal reference IRQ */
+ do {
+ ret = max8925_reg_read(chip->adc, MAX8925_TSC_IRQ);
+ } while (ret & MAX8925_NREF_OK);
+ /* enaable ADC scheduler, interval is 1 second */
+ max8925_set_bits(chip->adc, MAX8925_ADC_SCHED, 3, 2);
+ }
+
+ /* enable Momentary Power Loss */
+ max8925_set_bits(chip->rtc, MAX8925_MPL_CNTL, 1 << 4, 1 << 4);
+
+ ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
+ ARRAY_SIZE(rtc_devs),
+ &rtc_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add rtc subdev\n");
+ goto out;
+ }
+ if (pdata && pdata->regulator[0]) {
+ ret = mfd_add_devices(chip->dev, 0, &regulator_devs[0],
+ ARRAY_SIZE(regulator_devs),
+ &regulator_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add regulator subdev\n");
+ goto out_dev;
+ }
+ }
+
+ if (pdata && pdata->backlight) {
+ ret = mfd_add_devices(chip->dev, 0, &backlight_devs[0],
+ ARRAY_SIZE(backlight_devs),
+ &backlight_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add backlight subdev\n");
+ goto out_dev;
+ }
+ }
+
+ if (pdata && pdata->power) {
+ ret = mfd_add_devices(chip->dev, 0, &power_devs[0],
+ ARRAY_SIZE(power_devs),
+ &power_supply_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add power supply "
+ "subdev\n");
+ goto out_dev;
+ }
+ }
+
+ if (pdata && pdata->touch) {
+ ret = mfd_add_devices(chip->dev, 0, &touch_devs[0],
+ ARRAY_SIZE(touch_devs),
+ &touch_resources[0], 0);
+ if (ret < 0) {
+ dev_err(chip->dev, "Failed to add touch subdev\n");
+ goto out_dev;
+ }
+ }
+
+ return 0;
+out_dev:
+ mfd_remove_devices(chip->dev);
+out:
+ return ret;
+}
+
+void __devexit max8925_device_exit(struct max8925_chip *chip)
+{
+ if (chip->core_irq)
+ free_irq(chip->core_irq, chip);
+ if (chip->tsc_irq)
+ free_irq(chip->tsc_irq, chip);
+ mfd_remove_devices(chip->dev);
+}
+
+
+MODULE_DESCRIPTION("PMIC Driver for Maxim MAX8925");
+MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 21:01:10 +0000