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path: root/drivers/mfd/mt6397-core.c
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Diffstat (limited to 'drivers/mfd/mt6397-core.c')
-rw-r--r--drivers/mfd/mt6397-core.c105
1 files changed, 81 insertions, 24 deletions
diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c
index 1749c1c9f405..8e8d93249c09 100644
--- a/drivers/mfd/mt6397-core.c
+++ b/drivers/mfd/mt6397-core.c
@@ -19,11 +19,17 @@
#include <linux/regmap.h>
#include <linux/mfd/core.h>
#include <linux/mfd/mt6397/core.h>
+#include <linux/mfd/mt6323/core.h>
#include <linux/mfd/mt6397/registers.h>
+#include <linux/mfd/mt6323/registers.h>
#define MT6397_RTC_BASE 0xe000
#define MT6397_RTC_SIZE 0x3e
+#define MT6323_CID_CODE 0x23
+#define MT6391_CID_CODE 0x91
+#define MT6397_CID_CODE 0x97
+
static const struct resource mt6397_rtc_resources[] = {
{
.start = MT6397_RTC_BASE,
@@ -37,6 +43,13 @@ static const struct resource mt6397_rtc_resources[] = {
},
};
+static const struct mfd_cell mt6323_devs[] = {
+ {
+ .name = "mt6323-regulator",
+ .of_compatible = "mediatek,mt6323-regulator"
+ },
+};
+
static const struct mfd_cell mt6397_devs[] = {
{
.name = "mt6397-rtc",
@@ -69,8 +82,10 @@ 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_CON0, mt6397->irq_masks_cur[0]);
- regmap_write(mt6397->regmap, MT6397_INT_CON1, mt6397->irq_masks_cur[1]);
+ 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);
}
@@ -147,8 +162,8 @@ static irqreturn_t mt6397_irq_thread(int irq, void *data)
{
struct mt6397_chip *mt6397 = data;
- mt6397_irq_handle_reg(mt6397, MT6397_INT_STATUS0, 0);
- mt6397_irq_handle_reg(mt6397, MT6397_INT_STATUS1, 16);
+ mt6397_irq_handle_reg(mt6397, mt6397->int_status[0], 0);
+ mt6397_irq_handle_reg(mt6397, mt6397->int_status[1], 16);
return IRQ_HANDLED;
}
@@ -177,8 +192,8 @@ static int mt6397_irq_init(struct mt6397_chip *mt6397)
mutex_init(&mt6397->irqlock);
/* Mask all interrupt sources */
- regmap_write(mt6397->regmap, MT6397_INT_CON0, 0x0);
- regmap_write(mt6397->regmap, MT6397_INT_CON1, 0x0);
+ 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);
@@ -203,8 +218,8 @@ static int mt6397_irq_suspend(struct device *dev)
{
struct mt6397_chip *chip = dev_get_drvdata(dev);
- regmap_write(chip->regmap, MT6397_INT_CON0, chip->wake_mask[0]);
- regmap_write(chip->regmap, MT6397_INT_CON1, chip->wake_mask[1]);
+ regmap_write(chip->regmap, chip->int_con[0], chip->wake_mask[0]);
+ regmap_write(chip->regmap, chip->int_con[1], chip->wake_mask[1]);
enable_irq_wake(chip->irq);
@@ -215,8 +230,8 @@ static int mt6397_irq_resume(struct device *dev)
{
struct mt6397_chip *chip = dev_get_drvdata(dev);
- regmap_write(chip->regmap, MT6397_INT_CON0, chip->irq_masks_cur[0]);
- regmap_write(chip->regmap, MT6397_INT_CON1, chip->irq_masks_cur[1]);
+ regmap_write(chip->regmap, chip->int_con[0], chip->irq_masks_cur[0]);
+ regmap_write(chip->regmap, chip->int_con[1], chip->irq_masks_cur[1]);
disable_irq_wake(chip->irq);
@@ -230,34 +245,69 @@ static SIMPLE_DEV_PM_OPS(mt6397_pm_ops, mt6397_irq_suspend,
static int mt6397_probe(struct platform_device *pdev)
{
int ret;
- struct mt6397_chip *mt6397;
+ unsigned int id;
+ struct mt6397_chip *pmic;
- mt6397 = devm_kzalloc(&pdev->dev, sizeof(*mt6397), GFP_KERNEL);
- if (!mt6397)
+ pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
+ if (!pmic)
return -ENOMEM;
- mt6397->dev = &pdev->dev;
+ pmic->dev = &pdev->dev;
+
/*
* mt6397 MFD is child device of soc pmic wrapper.
* Regmap is set from its parent.
*/
- mt6397->regmap = dev_get_regmap(pdev->dev.parent, NULL);
- if (!mt6397->regmap)
+ pmic->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+ if (!pmic->regmap)
return -ENODEV;
- platform_set_drvdata(pdev, mt6397);
+ platform_set_drvdata(pdev, pmic);
- mt6397->irq = platform_get_irq(pdev, 0);
- if (mt6397->irq > 0) {
- ret = mt6397_irq_init(mt6397);
+ ret = regmap_read(pmic->regmap, MT6397_CID, &id);
+ if (ret) {
+ dev_err(pmic->dev, "Failed to read chip id: %d\n", ret);
+ goto fail_irq;
+ }
+
+ switch (id & 0xff) {
+ case MT6323_CID_CODE:
+ pmic->int_con[0] = MT6323_INT_CON0;
+ pmic->int_con[1] = MT6323_INT_CON1;
+ pmic->int_status[0] = MT6323_INT_STATUS0;
+ pmic->int_status[1] = MT6323_INT_STATUS1;
+ ret = mfd_add_devices(&pdev->dev, -1, mt6323_devs,
+ ARRAY_SIZE(mt6323_devs), NULL, 0, NULL);
+ break;
+
+ case MT6397_CID_CODE:
+ case MT6391_CID_CODE:
+ pmic->int_con[0] = MT6397_INT_CON0;
+ pmic->int_con[1] = MT6397_INT_CON1;
+ pmic->int_status[0] = MT6397_INT_STATUS0;
+ pmic->int_status[1] = MT6397_INT_STATUS1;
+ ret = mfd_add_devices(&pdev->dev, -1, mt6397_devs,
+ ARRAY_SIZE(mt6397_devs), NULL, 0, NULL);
+ break;
+
+ default:
+ dev_err(&pdev->dev, "unsupported chip: %d\n", id);
+ ret = -ENODEV;
+ break;
+ }
+
+ pmic->irq = platform_get_irq(pdev, 0);
+ if (pmic->irq > 0) {
+ ret = mt6397_irq_init(pmic);
if (ret)
return ret;
}
- ret = mfd_add_devices(&pdev->dev, -1, mt6397_devs,
- ARRAY_SIZE(mt6397_devs), NULL, 0, NULL);
- if (ret)
+fail_irq:
+ if (ret) {
+ irq_domain_remove(pmic->irq_domain);
dev_err(&pdev->dev, "failed to add child devices: %d\n", ret);
+ }
return ret;
}
@@ -271,10 +321,17 @@ static int mt6397_remove(struct platform_device *pdev)
static const struct of_device_id mt6397_of_match[] = {
{ .compatible = "mediatek,mt6397" },
+ { .compatible = "mediatek,mt6323" },
{ }
};
MODULE_DEVICE_TABLE(of, mt6397_of_match);
+static const struct platform_device_id mt6397_id[] = {
+ { "mt6397", 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(platform, mt6397_id);
+
static struct platform_driver mt6397_driver = {
.probe = mt6397_probe,
.remove = mt6397_remove,
@@ -283,6 +340,7 @@ static struct platform_driver mt6397_driver = {
.of_match_table = of_match_ptr(mt6397_of_match),
.pm = &mt6397_pm_ops,
},
+ .id_table = mt6397_id,
};
module_platform_driver(mt6397_driver);
@@ -290,4 +348,3 @@ module_platform_driver(mt6397_driver);
MODULE_AUTHOR("Flora Fu, MediaTek");
MODULE_DESCRIPTION("Driver for MediaTek MT6397 PMIC");
MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:mt6397");
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-29 04:31:31 +0300