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@@ -1,7 +1,7 @@
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/*
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- * max14577.c - mfd core driver for the Maxim 14577
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+ * max14577.c - mfd core driver for the Maxim 14577/77836
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*
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- * Copyright (C) 2013 Samsung Electrnoics
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+ * Copyright (C) 2014 Samsung Electrnoics
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* Chanwoo Choi <cw00.choi@samsung.com>
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* Krzysztof Kozlowski <k.kozlowski@samsung.com>
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*
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@@ -21,6 +21,7 @@
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/interrupt.h>
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+#include <linux/of_device.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/max14577.h>
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#include <linux/mfd/max14577-private.h>
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@@ -37,7 +38,38 @@ static struct mfd_cell max14577_devs[] = {
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{ .name = "max14577-charger", },
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};
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-static bool max14577_volatile_reg(struct device *dev, unsigned int reg)
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+static struct mfd_cell max77836_devs[] = {
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+ {
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+ .name = "max77836-muic",
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+ .of_compatible = "maxim,max77836-muic",
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+ },
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+ {
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+ .name = "max77836-regulator",
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+ .of_compatible = "maxim,max77836-regulator",
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+ },
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+ {
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+ .name = "max77836-charger",
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+ .of_compatible = "maxim,max77836-charger",
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+ },
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+ {
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+ .name = "max77836-battery",
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+ .of_compatible = "maxim,max77836-battery",
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+ },
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+};
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+
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+static struct of_device_id max14577_dt_match[] = {
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+ {
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+ .compatible = "maxim,max14577",
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+ .data = (void *)MAXIM_DEVICE_TYPE_MAX14577,
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+ },
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+ {
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+ .compatible = "maxim,max77836",
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+ .data = (void *)MAXIM_DEVICE_TYPE_MAX77836,
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+ },
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+ {},
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+};
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+
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+static bool max14577_muic_volatile_reg(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case MAX14577_REG_INT1 ... MAX14577_REG_STATUS3:
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@@ -48,49 +80,221 @@ static bool max14577_volatile_reg(struct device *dev, unsigned int reg)
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return false;
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}
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-static const struct regmap_config max14577_regmap_config = {
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+static bool max77836_muic_volatile_reg(struct device *dev, unsigned int reg)
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+{
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+ /* Any max14577 volatile registers are also max77836 volatile. */
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+ if (max14577_muic_volatile_reg(dev, reg))
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+ return true;
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+
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+ switch (reg) {
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+ case MAX77836_FG_REG_VCELL_MSB ... MAX77836_FG_REG_SOC_LSB:
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+ case MAX77836_FG_REG_CRATE_MSB ... MAX77836_FG_REG_CRATE_LSB:
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+ case MAX77836_FG_REG_STATUS_H ... MAX77836_FG_REG_STATUS_L:
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+ case MAX77836_PMIC_REG_INTSRC:
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+ case MAX77836_PMIC_REG_TOPSYS_INT:
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+ case MAX77836_PMIC_REG_TOPSYS_STAT:
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+ return true;
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+ default:
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+ break;
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+ }
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+ return false;
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+}
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+
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+static const struct regmap_config max14577_muic_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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- .volatile_reg = max14577_volatile_reg,
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+ .volatile_reg = max14577_muic_volatile_reg,
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.max_register = MAX14577_REG_END,
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};
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+static const struct regmap_config max77836_pmic_regmap_config = {
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+ .reg_bits = 8,
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+ .val_bits = 8,
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+ .volatile_reg = max77836_muic_volatile_reg,
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+ .max_register = MAX77836_PMIC_REG_END,
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+};
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+
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static const struct regmap_irq max14577_irqs[] = {
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/* INT1 interrupts */
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- { .reg_offset = 0, .mask = INT1_ADC_MASK, },
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- { .reg_offset = 0, .mask = INT1_ADCLOW_MASK, },
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- { .reg_offset = 0, .mask = INT1_ADCERR_MASK, },
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+ { .reg_offset = 0, .mask = MAX14577_INT1_ADC_MASK, },
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+ { .reg_offset = 0, .mask = MAX14577_INT1_ADCLOW_MASK, },
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+ { .reg_offset = 0, .mask = MAX14577_INT1_ADCERR_MASK, },
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/* INT2 interrupts */
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- { .reg_offset = 1, .mask = INT2_CHGTYP_MASK, },
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- { .reg_offset = 1, .mask = INT2_CHGDETRUN_MASK, },
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- { .reg_offset = 1, .mask = INT2_DCDTMR_MASK, },
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- { .reg_offset = 1, .mask = INT2_DBCHG_MASK, },
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- { .reg_offset = 1, .mask = INT2_VBVOLT_MASK, },
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+ { .reg_offset = 1, .mask = MAX14577_INT2_CHGTYP_MASK, },
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+ { .reg_offset = 1, .mask = MAX14577_INT2_CHGDETRUN_MASK, },
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+ { .reg_offset = 1, .mask = MAX14577_INT2_DCDTMR_MASK, },
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+ { .reg_offset = 1, .mask = MAX14577_INT2_DBCHG_MASK, },
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+ { .reg_offset = 1, .mask = MAX14577_INT2_VBVOLT_MASK, },
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/* INT3 interrupts */
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- { .reg_offset = 2, .mask = INT3_EOC_MASK, },
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- { .reg_offset = 2, .mask = INT3_CGMBC_MASK, },
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- { .reg_offset = 2, .mask = INT3_OVP_MASK, },
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- { .reg_offset = 2, .mask = INT3_MBCCHGERR_MASK, },
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+ { .reg_offset = 2, .mask = MAX14577_INT3_EOC_MASK, },
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+ { .reg_offset = 2, .mask = MAX14577_INT3_CGMBC_MASK, },
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+ { .reg_offset = 2, .mask = MAX14577_INT3_OVP_MASK, },
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+ { .reg_offset = 2, .mask = MAX14577_INT3_MBCCHGERR_MASK, },
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};
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static const struct regmap_irq_chip max14577_irq_chip = {
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.name = "max14577",
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.status_base = MAX14577_REG_INT1,
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.mask_base = MAX14577_REG_INTMASK1,
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- .mask_invert = 1,
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+ .mask_invert = true,
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.num_regs = 3,
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.irqs = max14577_irqs,
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.num_irqs = ARRAY_SIZE(max14577_irqs),
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};
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+static const struct regmap_irq max77836_muic_irqs[] = {
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+ /* INT1 interrupts */
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+ { .reg_offset = 0, .mask = MAX14577_INT1_ADC_MASK, },
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+ { .reg_offset = 0, .mask = MAX14577_INT1_ADCLOW_MASK, },
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+ { .reg_offset = 0, .mask = MAX14577_INT1_ADCERR_MASK, },
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+ { .reg_offset = 0, .mask = MAX77836_INT1_ADC1K_MASK, },
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+ /* INT2 interrupts */
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+ { .reg_offset = 1, .mask = MAX14577_INT2_CHGTYP_MASK, },
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+ { .reg_offset = 1, .mask = MAX14577_INT2_CHGDETRUN_MASK, },
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+ { .reg_offset = 1, .mask = MAX14577_INT2_DCDTMR_MASK, },
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+ { .reg_offset = 1, .mask = MAX14577_INT2_DBCHG_MASK, },
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+ { .reg_offset = 1, .mask = MAX14577_INT2_VBVOLT_MASK, },
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+ { .reg_offset = 1, .mask = MAX77836_INT2_VIDRM_MASK, },
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+ /* INT3 interrupts */
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+ { .reg_offset = 2, .mask = MAX14577_INT3_EOC_MASK, },
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+ { .reg_offset = 2, .mask = MAX14577_INT3_CGMBC_MASK, },
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+ { .reg_offset = 2, .mask = MAX14577_INT3_OVP_MASK, },
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+ { .reg_offset = 2, .mask = MAX14577_INT3_MBCCHGERR_MASK, },
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+};
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+
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+static const struct regmap_irq_chip max77836_muic_irq_chip = {
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+ .name = "max77836-muic",
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+ .status_base = MAX14577_REG_INT1,
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+ .mask_base = MAX14577_REG_INTMASK1,
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+ .mask_invert = true,
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+ .num_regs = 3,
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+ .irqs = max77836_muic_irqs,
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+ .num_irqs = ARRAY_SIZE(max77836_muic_irqs),
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+};
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+
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+static const struct regmap_irq max77836_pmic_irqs[] = {
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+ { .reg_offset = 0, .mask = MAX77836_TOPSYS_INT_T120C_MASK, },
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+ { .reg_offset = 0, .mask = MAX77836_TOPSYS_INT_T140C_MASK, },
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+};
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+
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+static const struct regmap_irq_chip max77836_pmic_irq_chip = {
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+ .name = "max77836-pmic",
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+ .status_base = MAX77836_PMIC_REG_TOPSYS_INT,
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+ .mask_base = MAX77836_PMIC_REG_TOPSYS_INT_MASK,
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+ .mask_invert = false,
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+ .num_regs = 1,
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+ .irqs = max77836_pmic_irqs,
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+ .num_irqs = ARRAY_SIZE(max77836_pmic_irqs),
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+};
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+
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+static void max14577_print_dev_type(struct max14577 *max14577)
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+{
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+ u8 reg_data, vendor_id, device_id;
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+ int ret;
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+
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+ ret = max14577_read_reg(max14577->regmap, MAX14577_REG_DEVICEID,
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+ ®_data);
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+ if (ret) {
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+ dev_err(max14577->dev,
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+ "Failed to read DEVICEID register: %d\n", ret);
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+ return;
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+ }
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+
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+ vendor_id = ((reg_data & DEVID_VENDORID_MASK) >>
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+ DEVID_VENDORID_SHIFT);
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+ device_id = ((reg_data & DEVID_DEVICEID_MASK) >>
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+ DEVID_DEVICEID_SHIFT);
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+
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+ dev_info(max14577->dev, "Device type: %u (ID: 0x%x, vendor: 0x%x)\n",
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+ max14577->dev_type, device_id, vendor_id);
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+}
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+
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+/*
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+ * Max77836 specific initialization code for driver probe.
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+ * Adds new I2C dummy device, regmap and regmap IRQ chip.
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+ * Unmasks Interrupt Source register.
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+ *
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+ * On success returns 0.
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+ * On failure returns errno and reverts any changes done so far (e.g. remove
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+ * I2C dummy device), except masking the INT SRC register.
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+ */
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+static int max77836_init(struct max14577 *max14577)
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+{
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+ int ret;
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+ u8 intsrc_mask;
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+
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+ max14577->i2c_pmic = i2c_new_dummy(max14577->i2c->adapter,
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+ I2C_ADDR_PMIC);
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+ if (!max14577->i2c_pmic) {
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+ dev_err(max14577->dev, "Failed to register PMIC I2C device\n");
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+ return -ENODEV;
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+ }
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+ i2c_set_clientdata(max14577->i2c_pmic, max14577);
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+
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+ max14577->regmap_pmic = devm_regmap_init_i2c(max14577->i2c_pmic,
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+ &max77836_pmic_regmap_config);
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+ if (IS_ERR(max14577->regmap_pmic)) {
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+ ret = PTR_ERR(max14577->regmap_pmic);
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+ dev_err(max14577->dev, "Failed to allocate PMIC register map: %d\n",
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+ ret);
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+ goto err;
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+ }
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+
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+ /* Un-mask MAX77836 Interrupt Source register */
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+ ret = max14577_read_reg(max14577->regmap_pmic,
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+ MAX77836_PMIC_REG_INTSRC_MASK, &intsrc_mask);
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+ if (ret < 0) {
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+ dev_err(max14577->dev, "Failed to read PMIC register\n");
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+ goto err;
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+ }
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+
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+ intsrc_mask &= ~(MAX77836_INTSRC_MASK_TOP_INT_MASK);
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+ intsrc_mask &= ~(MAX77836_INTSRC_MASK_MUIC_CHG_INT_MASK);
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+ ret = max14577_write_reg(max14577->regmap_pmic,
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+ MAX77836_PMIC_REG_INTSRC_MASK, intsrc_mask);
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+ if (ret < 0) {
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+ dev_err(max14577->dev, "Failed to write PMIC register\n");
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+ goto err;
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+ }
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+
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+ ret = regmap_add_irq_chip(max14577->regmap_pmic, max14577->irq,
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+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED,
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+ 0, &max77836_pmic_irq_chip,
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+ &max14577->irq_data_pmic);
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+ if (ret != 0) {
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+ dev_err(max14577->dev, "Failed to request PMIC IRQ %d: %d\n",
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+ max14577->irq, ret);
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+ goto err;
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+ }
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+
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+ return 0;
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+
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+err:
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+ i2c_unregister_device(max14577->i2c_pmic);
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+
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+ return ret;
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+}
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+
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+/*
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+ * Max77836 specific de-initialization code for driver remove.
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+ */
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+static void max77836_remove(struct max14577 *max14577)
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+{
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+ regmap_del_irq_chip(max14577->irq, max14577->irq_data_pmic);
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+ i2c_unregister_device(max14577->i2c_pmic);
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+}
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+
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static int max14577_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct max14577 *max14577;
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struct max14577_platform_data *pdata = dev_get_platdata(&i2c->dev);
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struct device_node *np = i2c->dev.of_node;
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- u8 reg_data;
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int ret = 0;
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+ const struct regmap_irq_chip *irq_chip;
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+ struct mfd_cell *mfd_devs;
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+ unsigned int mfd_devs_size;
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+ int irq_flags;
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if (np) {
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pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL);
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@@ -113,7 +317,8 @@ static int max14577_i2c_probe(struct i2c_client *i2c,
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max14577->i2c = i2c;
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max14577->irq = i2c->irq;
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- max14577->regmap = devm_regmap_init_i2c(i2c, &max14577_regmap_config);
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+ max14577->regmap = devm_regmap_init_i2c(i2c,
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+ &max14577_muic_regmap_config);
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if (IS_ERR(max14577->regmap)) {
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ret = PTR_ERR(max14577->regmap);
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dev_err(max14577->dev, "Failed to allocate register map: %d\n",
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@@ -121,23 +326,36 @@ static int max14577_i2c_probe(struct i2c_client *i2c,
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return ret;
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}
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- ret = max14577_read_reg(max14577->regmap, MAX14577_REG_DEVICEID,
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- ®_data);
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- if (ret) {
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- dev_err(max14577->dev, "Device not found on this channel: %d\n",
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- ret);
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- return ret;
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+ if (np) {
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+ const struct of_device_id *of_id;
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+
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+ of_id = of_match_device(max14577_dt_match, &i2c->dev);
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+ if (of_id)
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+ max14577->dev_type = (unsigned int)of_id->data;
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+ } else {
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+ max14577->dev_type = id->driver_data;
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+ }
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+
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+ max14577_print_dev_type(max14577);
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+
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+ switch (max14577->dev_type) {
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+ case MAXIM_DEVICE_TYPE_MAX77836:
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+ irq_chip = &max77836_muic_irq_chip;
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+ mfd_devs = max77836_devs;
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+ mfd_devs_size = ARRAY_SIZE(max77836_devs);
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+ irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT | IRQF_SHARED;
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+ break;
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+ case MAXIM_DEVICE_TYPE_MAX14577:
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+ default:
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+ irq_chip = &max14577_irq_chip;
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+ mfd_devs = max14577_devs;
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+ mfd_devs_size = ARRAY_SIZE(max14577_devs);
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+ irq_flags = IRQF_TRIGGER_FALLING | IRQF_ONESHOT;
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+ break;
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}
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- max14577->vendor_id = ((reg_data & DEVID_VENDORID_MASK) >>
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- DEVID_VENDORID_SHIFT);
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- max14577->device_id = ((reg_data & DEVID_DEVICEID_MASK) >>
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- DEVID_DEVICEID_SHIFT);
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- dev_info(max14577->dev, "Device ID: 0x%x, vendor: 0x%x\n",
|
|
|
- max14577->device_id, max14577->vendor_id);
|
|
|
|
|
|
ret = regmap_add_irq_chip(max14577->regmap, max14577->irq,
|
|
|
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT, 0,
|
|
|
- &max14577_irq_chip,
|
|
|
+ irq_flags, 0, irq_chip,
|
|
|
&max14577->irq_data);
|
|
|
if (ret != 0) {
|
|
|
dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n",
|
|
|
@@ -145,8 +363,15 @@ static int max14577_i2c_probe(struct i2c_client *i2c,
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
- ret = mfd_add_devices(max14577->dev, -1, max14577_devs,
|
|
|
- ARRAY_SIZE(max14577_devs), NULL, 0,
|
|
|
+ /* Max77836 specific initialization code (additional regmap) */
|
|
|
+ if (max14577->dev_type == MAXIM_DEVICE_TYPE_MAX77836) {
|
|
|
+ ret = max77836_init(max14577);
|
|
|
+ if (ret < 0)
|
|
|
+ goto err_max77836;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = mfd_add_devices(max14577->dev, -1, mfd_devs,
|
|
|
+ mfd_devs_size, NULL, 0,
|
|
|
regmap_irq_get_domain(max14577->irq_data));
|
|
|
if (ret < 0)
|
|
|
goto err_mfd;
|
|
|
@@ -156,6 +381,9 @@ static int max14577_i2c_probe(struct i2c_client *i2c,
|
|
|
return 0;
|
|
|
|
|
|
err_mfd:
|
|
|
+ if (max14577->dev_type == MAXIM_DEVICE_TYPE_MAX77836)
|
|
|
+ max77836_remove(max14577);
|
|
|
+err_max77836:
|
|
|
regmap_del_irq_chip(max14577->irq, max14577->irq_data);
|
|
|
|
|
|
return ret;
|
|
|
@@ -167,12 +395,15 @@ static int max14577_i2c_remove(struct i2c_client *i2c)
|
|
|
|
|
|
mfd_remove_devices(max14577->dev);
|
|
|
regmap_del_irq_chip(max14577->irq, max14577->irq_data);
|
|
|
+ if (max14577->dev_type == MAXIM_DEVICE_TYPE_MAX77836)
|
|
|
+ max77836_remove(max14577);
|
|
|
|
|
|
return 0;
|
|
|
}
|
|
|
|
|
|
static const struct i2c_device_id max14577_i2c_id[] = {
|
|
|
- { "max14577", 0 },
|
|
|
+ { "max14577", MAXIM_DEVICE_TYPE_MAX14577, },
|
|
|
+ { "max77836", MAXIM_DEVICE_TYPE_MAX77836, },
|
|
|
{ }
|
|
|
};
|
|
|
MODULE_DEVICE_TABLE(i2c, max14577_i2c_id);
|
|
|
@@ -215,11 +446,6 @@ static int max14577_resume(struct device *dev)
|
|
|
}
|
|
|
#endif /* CONFIG_PM_SLEEP */
|
|
|
|
|
|
-static struct of_device_id max14577_dt_match[] = {
|
|
|
- { .compatible = "maxim,max14577", },
|
|
|
- {},
|
|
|
-};
|
|
|
-
|
|
|
static SIMPLE_DEV_PM_OPS(max14577_pm, max14577_suspend, max14577_resume);
|
|
|
|
|
|
static struct i2c_driver max14577_i2c_driver = {
|
|
|
@@ -236,6 +462,9 @@ static struct i2c_driver max14577_i2c_driver = {
|
|
|
|
|
|
static int __init max14577_i2c_init(void)
|
|
|
{
|
|
|
+ BUILD_BUG_ON(ARRAY_SIZE(max14577_i2c_id) != MAXIM_DEVICE_TYPE_NUM);
|
|
|
+ BUILD_BUG_ON(ARRAY_SIZE(max14577_dt_match) != MAXIM_DEVICE_TYPE_NUM);
|
|
|
+
|
|
|
return i2c_add_driver(&max14577_i2c_driver);
|
|
|
}
|
|
|
subsys_initcall(max14577_i2c_init);
|
|
|
@@ -247,5 +476,5 @@ static void __exit max14577_i2c_exit(void)
|
|
|
module_exit(max14577_i2c_exit);
|
|
|
|
|
|
MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>, Krzysztof Kozlowski <k.kozlowski@samsung.com>");
|
|
|
-MODULE_DESCRIPTION("MAXIM 14577 multi-function core driver");
|
|
|
+MODULE_DESCRIPTION("Maxim 14577/77836 multi-function core driver");
|
|
|
MODULE_LICENSE("GPL");
|
Chanwoo Choi