diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mfd/mt6397-core.c | 58 |
1 files changed, 41 insertions, 17 deletions
diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c index 75ad0fe656f7..aa91606f9a30 100644 --- a/drivers/mfd/mt6397-core.c +++ b/drivers/mfd/mt6397-core.c @@ -24,6 +24,9 @@ #define MT6397_RTC_BASE 0xe000 #define MT6397_RTC_SIZE 0x3e +#define MT6391_CID_CODE 0x91 +#define MT6397_CID_CODE 0x97 + static const struct resource mt6397_rtc_resources[] = { { .start = MT6397_RTC_BASE, @@ -232,39 +235,60 @@ 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; - mt6397->int_con[0] = MT6397_INT_CON0; - mt6397->int_con[1] = MT6397_INT_CON1; - mt6397->int_status[0] = MT6397_INT_STATUS0; - mt6397->int_status[1] = MT6397_INT_STATUS1; + 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); + + 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 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; + } - mt6397->irq = platform_get_irq(pdev, 0); - if (mt6397->irq > 0) { - ret = mt6397_irq_init(mt6397); + 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; } |