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-rw-r--r--drivers/mfd/Makefile3
-rw-r--r--drivers/mfd/mt6397-core.c146
-rw-r--r--drivers/mfd/mt6397-irq.c181
-rw-r--r--include/linux/mfd/mt6397/core.h9
4 files changed, 192 insertions, 147 deletions
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 446d5df7cacb..7b6a6aa4fe42 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -240,7 +240,8 @@ obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o
obj-$(CONFIG_INTEL_SOC_PMIC_BXTWC) += intel_soc_pmic_bxtwc.o
obj-$(CONFIG_INTEL_SOC_PMIC_CHTWC) += intel_soc_pmic_chtwc.o
obj-$(CONFIG_INTEL_SOC_PMIC_CHTDC_TI) += intel_soc_pmic_chtdc_ti.o
-obj-$(CONFIG_MFD_MT6397) += mt6397-core.o
+mt6397-objs := mt6397-core.o mt6397-irq.o
+obj-$(CONFIG_MFD_MT6397) += mt6397.o
obj-$(CONFIG_MFD_ALTERA_A10SR) += altera-a10sr.o
obj-$(CONFIG_MFD_ALTERA_SYSMGR) += altera-sysmgr.o
diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c
index c0708622f41b..93c888153b77 100644
--- a/drivers/mfd/mt6397-core.c
+++ b/drivers/mfd/mt6397-core.c
@@ -18,10 +18,6 @@
#define MT6397_RTC_BASE 0xe000
#define MT6397_RTC_SIZE 0x3e
-#define MT6323_CHIP_ID 0x23
-#define MT6391_CHIP_ID 0x91
-#define MT6397_CHIP_ID 0x97
-
static const struct resource mt6397_rtc_resources[] = {
{
.start = MT6397_RTC_BASE,
@@ -86,148 +82,6 @@ static const struct mfd_cell mt6397_devs[] = {
}
};
-static void mt6397_irq_lock(struct irq_data *data)
-{
- struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data);
-
- mutex_lock(&mt6397->irqlock);
-}
-
-static void mt6397_irq_sync_unlock(struct irq_data *data)
-{
- struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data);
-
- regmap_write(mt6397->regmap, mt6397->int_con[0],
- mt6397->irq_masks_cur[0]);
- regmap_write(mt6397->regmap, mt6397->int_con[1],
- mt6397->irq_masks_cur[1]);
-
- mutex_unlock(&mt6397->irqlock);
-}
-
-static void mt6397_irq_disable(struct irq_data *data)
-{
- struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data);
- int shift = data->hwirq & 0xf;
- int reg = data->hwirq >> 4;
-
- mt6397->irq_masks_cur[reg] &= ~BIT(shift);
-}
-
-static void mt6397_irq_enable(struct irq_data *data)
-{
- struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data);
- int shift = data->hwirq & 0xf;
- int reg = data->hwirq >> 4;
-
- mt6397->irq_masks_cur[reg] |= BIT(shift);
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int mt6397_irq_set_wake(struct irq_data *irq_data, unsigned int on)
-{
- struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(irq_data);
- int shift = irq_data->hwirq & 0xf;
- int reg = irq_data->hwirq >> 4;
-
- if (on)
- mt6397->wake_mask[reg] |= BIT(shift);
- else
- mt6397->wake_mask[reg] &= ~BIT(shift);
-
- return 0;
-}
-#else
-#define mt6397_irq_set_wake NULL
-#endif
-
-static struct irq_chip mt6397_irq_chip = {
- .name = "mt6397-irq",
- .irq_bus_lock = mt6397_irq_lock,
- .irq_bus_sync_unlock = mt6397_irq_sync_unlock,
- .irq_enable = mt6397_irq_enable,
- .irq_disable = mt6397_irq_disable,
- .irq_set_wake = mt6397_irq_set_wake,
-};
-
-static void mt6397_irq_handle_reg(struct mt6397_chip *mt6397, int reg,
- int irqbase)
-{
- unsigned int status;
- int i, irq, ret;
-
- ret = regmap_read(mt6397->regmap, reg, &status);
- if (ret) {
- dev_err(mt6397->dev, "Failed to read irq status: %d\n", ret);
- return;
- }
-
- for (i = 0; i < 16; i++) {
- if (status & BIT(i)) {
- irq = irq_find_mapping(mt6397->irq_domain, irqbase + i);
- if (irq)
- handle_nested_irq(irq);
- }
- }
-
- regmap_write(mt6397->regmap, reg, status);
-}
-
-static irqreturn_t mt6397_irq_thread(int irq, void *data)
-{
- struct mt6397_chip *mt6397 = data;
-
- mt6397_irq_handle_reg(mt6397, mt6397->int_status[0], 0);
- mt6397_irq_handle_reg(mt6397, mt6397->int_status[1], 16);
-
- return IRQ_HANDLED;
-}
-
-static int mt6397_irq_domain_map(struct irq_domain *d, unsigned int irq,
- irq_hw_number_t hw)
-{
- struct mt6397_chip *mt6397 = d->host_data;
-
- irq_set_chip_data(irq, mt6397);
- irq_set_chip_and_handler(irq, &mt6397_irq_chip, handle_level_irq);
- irq_set_nested_thread(irq, 1);
- irq_set_noprobe(irq);
-
- return 0;
-}
-
-static const struct irq_domain_ops mt6397_irq_domain_ops = {
- .map = mt6397_irq_domain_map,
-};
-
-static int mt6397_irq_init(struct mt6397_chip *mt6397)
-{
- int ret;
-
- mutex_init(&mt6397->irqlock);
-
- /* Mask all interrupt sources */
- regmap_write(mt6397->regmap, mt6397->int_con[0], 0x0);
- regmap_write(mt6397->regmap, mt6397->int_con[1], 0x0);
-
- mt6397->irq_domain = irq_domain_add_linear(mt6397->dev->of_node,
- MT6397_IRQ_NR, &mt6397_irq_domain_ops, mt6397);
- if (!mt6397->irq_domain) {
- dev_err(mt6397->dev, "could not create irq domain\n");
- return -ENOMEM;
- }
-
- ret = devm_request_threaded_irq(mt6397->dev, mt6397->irq, NULL,
- mt6397_irq_thread, IRQF_ONESHOT, "mt6397-pmic", mt6397);
- if (ret) {
- dev_err(mt6397->dev, "failed to register irq=%d; err: %d\n",
- mt6397->irq, ret);
- return ret;
- }
-
- return 0;
-}
-
#ifdef CONFIG_PM_SLEEP
static int mt6397_irq_suspend(struct device *dev)
{
diff --git a/drivers/mfd/mt6397-irq.c b/drivers/mfd/mt6397-irq.c
new file mode 100644
index 000000000000..b2d3ce1f3115
--- /dev/null
+++ b/drivers/mfd/mt6397-irq.c
@@ -0,0 +1,181 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2019 MediaTek Inc.
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_irq.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/mfd/mt6323/core.h>
+#include <linux/mfd/mt6323/registers.h>
+#include <linux/mfd/mt6397/core.h>
+#include <linux/mfd/mt6397/registers.h>
+
+static void mt6397_irq_lock(struct irq_data *data)
+{
+ struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data);
+
+ mutex_lock(&mt6397->irqlock);
+}
+
+static void mt6397_irq_sync_unlock(struct irq_data *data)
+{
+ struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data);
+
+ regmap_write(mt6397->regmap, mt6397->int_con[0],
+ mt6397->irq_masks_cur[0]);
+ regmap_write(mt6397->regmap, mt6397->int_con[1],
+ mt6397->irq_masks_cur[1]);
+
+ mutex_unlock(&mt6397->irqlock);
+}
+
+static void mt6397_irq_disable(struct irq_data *data)
+{
+ struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data);
+ int shift = data->hwirq & 0xf;
+ int reg = data->hwirq >> 4;
+
+ mt6397->irq_masks_cur[reg] &= ~BIT(shift);
+}
+
+static void mt6397_irq_enable(struct irq_data *data)
+{
+ struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(data);
+ int shift = data->hwirq & 0xf;
+ int reg = data->hwirq >> 4;
+
+ mt6397->irq_masks_cur[reg] |= BIT(shift);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int mt6397_irq_set_wake(struct irq_data *irq_data, unsigned int on)
+{
+ struct mt6397_chip *mt6397 = irq_data_get_irq_chip_data(irq_data);
+ int shift = irq_data->hwirq & 0xf;
+ int reg = irq_data->hwirq >> 4;
+
+ if (on)
+ mt6397->wake_mask[reg] |= BIT(shift);
+ else
+ mt6397->wake_mask[reg] &= ~BIT(shift);
+
+ return 0;
+}
+#else
+#define mt6397_irq_set_wake NULL
+#endif
+
+static struct irq_chip mt6397_irq_chip = {
+ .name = "mt6397-irq",
+ .irq_bus_lock = mt6397_irq_lock,
+ .irq_bus_sync_unlock = mt6397_irq_sync_unlock,
+ .irq_enable = mt6397_irq_enable,
+ .irq_disable = mt6397_irq_disable,
+ .irq_set_wake = mt6397_irq_set_wake,
+};
+
+static void mt6397_irq_handle_reg(struct mt6397_chip *mt6397, int reg,
+ int irqbase)
+{
+ unsigned int status;
+ int i, irq, ret;
+
+ ret = regmap_read(mt6397->regmap, reg, &status);
+ if (ret) {
+ dev_err(mt6397->dev, "Failed to read irq status: %d\n", ret);
+ return;
+ }
+
+ for (i = 0; i < 16; i++) {
+ if (status & BIT(i)) {
+ irq = irq_find_mapping(mt6397->irq_domain, irqbase + i);
+ if (irq)
+ handle_nested_irq(irq);
+ }
+ }
+
+ regmap_write(mt6397->regmap, reg, status);
+}
+
+static irqreturn_t mt6397_irq_thread(int irq, void *data)
+{
+ struct mt6397_chip *mt6397 = data;
+
+ mt6397_irq_handle_reg(mt6397, mt6397->int_status[0], 0);
+ mt6397_irq_handle_reg(mt6397, mt6397->int_status[1], 16);
+
+ return IRQ_HANDLED;
+}
+
+static int mt6397_irq_domain_map(struct irq_domain *d, unsigned int irq,
+ irq_hw_number_t hw)
+{
+ struct mt6397_chip *mt6397 = d->host_data;
+
+ irq_set_chip_data(irq, mt6397);
+ irq_set_chip_and_handler(irq, &mt6397_irq_chip, handle_level_irq);
+ irq_set_nested_thread(irq, 1);
+ irq_set_noprobe(irq);
+
+ return 0;
+}
+
+static const struct irq_domain_ops mt6397_irq_domain_ops = {
+ .map = mt6397_irq_domain_map,
+};
+
+int mt6397_irq_init(struct mt6397_chip *chip)
+{
+ int ret;
+
+ mutex_init(&chip->irqlock);
+
+ switch (chip->chip_id) {
+ case MT6323_CHIP_ID:
+ chip->int_con[0] = MT6323_INT_CON0;
+ chip->int_con[1] = MT6323_INT_CON1;
+ chip->int_status[0] = MT6323_INT_STATUS0;
+ chip->int_status[1] = MT6323_INT_STATUS1;
+ break;
+
+ case MT6391_CHIP_ID:
+ case MT6397_CHIP_ID:
+ chip->int_con[0] = MT6397_INT_CON0;
+ chip->int_con[1] = MT6397_INT_CON1;
+ chip->int_status[0] = MT6397_INT_STATUS0;
+ chip->int_status[1] = MT6397_INT_STATUS1;
+ break;
+
+ default:
+ dev_err(chip->dev, "unsupported chip: 0x%x\n", chip->chip_id);
+ return -ENODEV;
+ }
+
+ /* Mask all interrupt sources */
+ regmap_write(chip->regmap, chip->int_con[0], 0x0);
+ regmap_write(chip->regmap, chip->int_con[1], 0x0);
+
+ chip->irq_domain = irq_domain_add_linear(chip->dev->of_node,
+ MT6397_IRQ_NR,
+ &mt6397_irq_domain_ops,
+ chip);
+ if (!chip->irq_domain) {
+ dev_err(chip->dev, "could not create irq domain\n");
+ return -ENOMEM;
+ }
+
+ ret = devm_request_threaded_irq(chip->dev, chip->irq, NULL,
+ mt6397_irq_thread, IRQF_ONESHOT,
+ "mt6397-pmic", chip);
+ if (ret) {
+ dev_err(chip->dev, "failed to register irq=%d; err: %d\n",
+ chip->irq, ret);
+ return ret;
+ }
+
+ return 0;
+}
diff --git a/include/linux/mfd/mt6397/core.h b/include/linux/mfd/mt6397/core.h
index 25a95e72179b..9320c2a1e3e6 100644
--- a/include/linux/mfd/mt6397/core.h
+++ b/include/linux/mfd/mt6397/core.h
@@ -7,6 +7,12 @@
#ifndef __MFD_MT6397_CORE_H__
#define __MFD_MT6397_CORE_H__
+enum chip_id {
+ MT6323_CHIP_ID = 0x23,
+ MT6391_CHIP_ID = 0x91,
+ MT6397_CHIP_ID = 0x97,
+};
+
enum mt6397_irq_numbers {
MT6397_IRQ_SPKL_AB = 0,
MT6397_IRQ_SPKR_AB,
@@ -54,6 +60,9 @@ struct mt6397_chip {
u16 irq_masks_cache[2];
u16 int_con[2];
u16 int_status[2];
+ u16 chip_id;
};
+int mt6397_irq_init(struct mt6397_chip *chip);
+
#endif /* __MFD_MT6397_CORE_H__ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 22:09:33 +0100