On Thu, 23 Jun 2022, ChiaEn Wu wrote:

> From: ChiYuan Huang <cy_hu...@richtek.com>
> 
> Add Mediatek MT6370 MFD support.

No such thing as "MFD support".

And you're not getting away with submitting a 370 line patch with a 5
word change log either. :)

Please at least tell us what the device is and what it's used for.

> Signed-off-by: ChiYuan Huang <cy_hu...@richtek.com>
> ---
> 
> v3
> - Refine Kconfig help text
> - Refine error message of unknown vendor ID in
>   mt6370_check_vendor_info()
> - Refine return value handling of mt6370_regmap_read()
> - Refine all probe error by using dev_err_probe()
> - Refine "bank_idx" and "bank_addr" in mt6370_regmap_read() and
>   mt6370_regmap_write()
> - Add "#define VENID*" and drop the comments in
>   mt6370_check_vendor_info()
> - Drop "MFD" in MODULE_DESCRIPTION()
> ---
>  drivers/mfd/Kconfig  |  13 ++
>  drivers/mfd/Makefile |   1 +
>  drivers/mfd/mt6370.c | 358 
> +++++++++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 372 insertions(+)
>  create mode 100644 drivers/mfd/mt6370.c
> 
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 3b59456..4c900c4 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -937,6 +937,19 @@ config MFD_MT6360
>         PMIC part includes 2-channel BUCKs and 2-channel LDOs
>         LDO part includes 4-channel LDOs
>  
> +config MFD_MT6370
> +     tristate "Mediatek MT6370 SubPMIC"
> +     select MFD_CORE
> +     select REGMAP_I2C
> +     select REGMAP_IRQ
> +     depends on I2C
> +     help
> +       Say Y here to enable MT6370 SubPMIC functional support.
> +       It consists of a single cell battery charger with ADC monitoring, RGB
> +       LEDs, dual channel flashlight, WLED backlight driver, display bias
> +       voltage supply, one general purpose LDO, and the USB Type-C & PD
> +       controller complies with the latest USB Type-C and PD standards.
> +
>  config MFD_MT6397
>       tristate "MediaTek MT6397 PMIC Support"
>       select MFD_CORE
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 858cacf..62b2712 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -242,6 +242,7 @@ 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_MT6360)     += mt6360-core.o
> +obj-$(CONFIG_MFD_MT6370)     += mt6370.o
>  mt6397-objs                  := mt6397-core.o mt6397-irq.o mt6358-irq.o
>  obj-$(CONFIG_MFD_MT6397)     += mt6397.o
>  obj-$(CONFIG_INTEL_SOC_PMIC_MRFLD)   += intel_soc_pmic_mrfld.o
> diff --git a/drivers/mfd/mt6370.c b/drivers/mfd/mt6370.c
> new file mode 100644
> index 0000000..49f02b1
> --- /dev/null
> +++ b/drivers/mfd/mt6370.c
> @@ -0,0 +1,358 @@
> +// SPDX-License-Identifier: GPL-2.0

No Copyright?

> +#include <linux/bits.h>
> +#include <linux/i2c.h>
> +#include <linux/interrupt.h>
> +#include <linux/kernel.h>
> +#include <linux/mfd/core.h>
> +#include <linux/module.h>
> +#include <linux/regmap.h>
> +
> +enum {
> +     MT6370_USBC_I2C = 0,
> +     MT6370_PMU_I2C,
> +     MT6370_MAX_I2C
> +};
> +
> +#define MT6370_REG_DEV_INFO  0x100
> +#define MT6370_REG_CHG_IRQ1  0x1C0
> +#define MT6370_REG_CHG_MASK1 0x1E0
> +
> +#define MT6370_VENID_MASK    GENMASK(7, 4)
> +
> +#define MT6370_NUM_IRQREGS   16
> +#define MT6370_USBC_I2CADDR  0x4E
> +#define MT6370_REG_ADDRLEN   2
> +#define MT6370_REG_MAXADDR   0x1FF
> +
> +#define MT6370_VENID_RT5081  0x8
> +#define MT6370_VENID_RT5081A 0xA
> +#define MT6370_VENID_MT6370  0xE
> +#define MT6370_VENID_MT6371  0xF
> +#define MT6370_VENID_MT6372P 0x9
> +#define MT6370_VENID_MT6372CP        0xB
> +
> +/* IRQ definitions */
> +#define MT6370_IRQ_DIRCHGON          0
> +#define MT6370_IRQ_CHG_TREG          4
> +#define MT6370_IRQ_CHG_AICR          5
> +#define MT6370_IRQ_CHG_MIVR          6
> +#define MT6370_IRQ_PWR_RDY           7
> +#define MT6370_IRQ_FL_CHG_VINOVP     11
> +#define MT6370_IRQ_CHG_VSYSUV                12
> +#define MT6370_IRQ_CHG_VSYSOV                13
> +#define MT6370_IRQ_CHG_VBATOV                14
> +#define MT6370_IRQ_CHG_VINOVPCHG     15
> +#define MT6370_IRQ_TS_BAT_COLD               20
> +#define MT6370_IRQ_TS_BAT_COOL               21
> +#define MT6370_IRQ_TS_BAT_WARM               22
> +#define MT6370_IRQ_TS_BAT_HOT                23
> +#define MT6370_IRQ_TS_STATC          24
> +#define MT6370_IRQ_CHG_FAULT         25
> +#define MT6370_IRQ_CHG_STATC         26
> +#define MT6370_IRQ_CHG_TMR           27
> +#define MT6370_IRQ_CHG_BATABS                28
> +#define MT6370_IRQ_CHG_ADPBAD                29
> +#define MT6370_IRQ_CHG_RVP           30
> +#define MT6370_IRQ_TSHUTDOWN         31
> +#define MT6370_IRQ_CHG_IINMEAS               32
> +#define MT6370_IRQ_CHG_ICCMEAS               33
> +#define MT6370_IRQ_CHGDET_DONE               34
> +#define MT6370_IRQ_WDTMR             35
> +#define MT6370_IRQ_SSFINISH          36
> +#define MT6370_IRQ_CHG_RECHG         37
> +#define MT6370_IRQ_CHG_TERM          38
> +#define MT6370_IRQ_CHG_IEOC          39
> +#define MT6370_IRQ_ADC_DONE          40
> +#define MT6370_IRQ_PUMPX_DONE                41
> +#define MT6370_IRQ_BST_BATUV         45
> +#define MT6370_IRQ_BST_MIDOV         46
> +#define MT6370_IRQ_BST_OLP           47
> +#define MT6370_IRQ_ATTACH            48
> +#define MT6370_IRQ_DETACH            49
> +#define MT6370_IRQ_HVDCP_STPDONE     51
> +#define MT6370_IRQ_HVDCP_VBUSDET_DONE        52
> +#define MT6370_IRQ_HVDCP_DET         53
> +#define MT6370_IRQ_CHGDET            54
> +#define MT6370_IRQ_DCDT                      55
> +#define MT6370_IRQ_DIRCHG_VGOK               59
> +#define MT6370_IRQ_DIRCHG_WDTMR              60
> +#define MT6370_IRQ_DIRCHG_UC         61
> +#define MT6370_IRQ_DIRCHG_OC         62
> +#define MT6370_IRQ_DIRCHG_OV         63
> +#define MT6370_IRQ_OVPCTRL_SWON              67
> +#define MT6370_IRQ_OVPCTRL_UVP_D     68
> +#define MT6370_IRQ_OVPCTRL_UVP               69
> +#define MT6370_IRQ_OVPCTRL_OVP_D     70
> +#define MT6370_IRQ_OVPCTRL_OVP               71
> +#define MT6370_IRQ_FLED_STRBPIN              72
> +#define MT6370_IRQ_FLED_TORPIN               73
> +#define MT6370_IRQ_FLED_TX           74
> +#define MT6370_IRQ_FLED_LVF          75
> +#define MT6370_IRQ_FLED2_SHORT               78
> +#define MT6370_IRQ_FLED1_SHORT               79
> +#define MT6370_IRQ_FLED2_STRB                80
> +#define MT6370_IRQ_FLED1_STRB                81
> +#define mT6370_IRQ_FLED2_STRB_TO     82
> +#define MT6370_IRQ_FLED1_STRB_TO     83
> +#define MT6370_IRQ_FLED2_TOR         84
> +#define MT6370_IRQ_FLED1_TOR         85
> +#define MT6370_IRQ_OTP                       93
> +#define MT6370_IRQ_VDDA_OVP          94
> +#define MT6370_IRQ_VDDA_UV           95
> +#define MT6370_IRQ_LDO_OC            103
> +#define MT6370_IRQ_BLED_OCP          118
> +#define MT6370_IRQ_BLED_OVP          119
> +#define MT6370_IRQ_DSV_VNEG_OCP              123
> +#define MT6370_IRQ_DSV_VPOS_OCP              124
> +#define MT6370_IRQ_DSV_BST_OCP               125
> +#define MT6370_IRQ_DSV_VNEG_SCP              126
> +#define MT6370_IRQ_DSV_VPOS_SCP              127

Can you pop these into a header file please?

> +struct mt6370_info {
> +     struct i2c_client *i2c[MT6370_MAX_I2C];
> +     struct device *dev;

You don't need both 'i2c' and 'dev'.

You can derive one from the other.

> +     struct regmap *regmap;
> +     struct regmap_irq_chip_data *irq_data;
> +};

This can do into the header file too.

> +static const struct regmap_irq mt6370_irqs[] = {
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DIRCHGON, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_TREG, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_AICR, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_MIVR, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_PWR_RDY, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_FL_CHG_VINOVP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_VSYSUV, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_VSYSOV, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_VBATOV, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_VINOVPCHG, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_TS_BAT_COLD, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_TS_BAT_COOL, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_TS_BAT_WARM, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_TS_BAT_HOT, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_TS_STATC, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_FAULT, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_STATC, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_TMR, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_BATABS, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_ADPBAD, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_RVP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_TSHUTDOWN, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_IINMEAS, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_ICCMEAS, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHGDET_DONE, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_WDTMR, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_SSFINISH, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_RECHG, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_TERM, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHG_IEOC, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_ADC_DONE, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_PUMPX_DONE, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_BST_BATUV, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_BST_MIDOV, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_BST_OLP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_ATTACH, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DETACH, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_HVDCP_STPDONE, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_HVDCP_VBUSDET_DONE, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_HVDCP_DET, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_CHGDET, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DCDT, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DIRCHG_VGOK, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DIRCHG_WDTMR, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DIRCHG_UC, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DIRCHG_OC, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DIRCHG_OV, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_OVPCTRL_SWON, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_OVPCTRL_UVP_D, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_OVPCTRL_UVP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_OVPCTRL_OVP_D, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_OVPCTRL_OVP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED_STRBPIN, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED_TORPIN, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED_TX, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED_LVF, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED2_SHORT, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED1_SHORT, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED2_STRB, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED1_STRB, 8),
> +     REGMAP_IRQ_REG_LINE(mT6370_IRQ_FLED2_STRB_TO, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED1_STRB_TO, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED2_TOR, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_FLED1_TOR, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_OTP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_VDDA_OVP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_VDDA_UV, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_LDO_OC, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_BLED_OCP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_BLED_OVP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DSV_VNEG_OCP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DSV_VPOS_OCP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DSV_BST_OCP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DSV_VNEG_SCP, 8),
> +     REGMAP_IRQ_REG_LINE(MT6370_IRQ_DSV_VPOS_SCP, 8)
> +};
> +
> +static const struct regmap_irq_chip mt6370_irq_chip = {
> +     .name           = "mt6370-irqs",
> +     .status_base    = MT6370_REG_CHG_IRQ1,
> +     .mask_base      = MT6370_REG_CHG_MASK1,
> +     .num_regs       = MT6370_NUM_IRQREGS,
> +     .irqs           = mt6370_irqs,
> +     .num_irqs       = ARRAY_SIZE(mt6370_irqs),
> +};
> +
> +static const struct resource mt6370_regulator_irqs[] = {
> +     DEFINE_RES_IRQ_NAMED(MT6370_IRQ_DSV_VPOS_SCP, "db_vpos_scp"),
> +     DEFINE_RES_IRQ_NAMED(MT6370_IRQ_DSV_VNEG_SCP, "db_vneg_scp"),
> +     DEFINE_RES_IRQ_NAMED(MT6370_IRQ_DSV_BST_OCP, "db_vbst_ocp"),
> +     DEFINE_RES_IRQ_NAMED(MT6370_IRQ_DSV_VPOS_OCP, "db_vpos_ocp"),
> +     DEFINE_RES_IRQ_NAMED(MT6370_IRQ_DSV_VNEG_OCP, "db_vneg_ocp"),
> +     DEFINE_RES_IRQ_NAMED(MT6370_IRQ_LDO_OC, "ldo_oc")
> +};
> +
> +static const struct mfd_cell mt6370_devices[] = {
> +     MFD_CELL_OF("adc", NULL, NULL, 0, 0, "mediatek,mt6370-adc"),
> +     MFD_CELL_OF("charger", NULL, NULL, 0, 0, "mediatek,mt6370-charger"),
> +     MFD_CELL_OF("backlight", NULL, NULL, 0, 0, "mediatek,mt6370-backlight"),
> +     MFD_CELL_OF("flashlight", NULL, NULL, 0, 0, 
> "mediatek,mt6370-flashlight"),
> +     MFD_CELL_OF("indicator", NULL, NULL, 0, 0, "mediatek,mt6370-indicator"),
> +     MFD_CELL_OF("tcpc", NULL, NULL, 0, 0, "mediatek,mt6370-tcpc"),
> +     MFD_CELL_RES("regulator", mt6370_regulator_irqs)

The first parameters here should be prepended with something, perhaps
"mt6370_"?

> +};
> +
> +static int mt6370_check_vendor_info(struct mt6370_info *info)
> +{
> +     unsigned int devinfo;
> +     int ret;
> +
> +     ret = regmap_read(info->regmap, MT6370_REG_DEV_INFO, &devinfo);
> +     if (ret)
> +             return ret;
> +
> +     switch (FIELD_GET(MT6370_VENID_MASK, devinfo)) {
> +     case MT6370_VENID_RT5081:
> +     case MT6370_VENID_RT5081A:
> +     case MT6370_VENID_MT6370:
> +     case MT6370_VENID_MT6371:
> +     case MT6370_VENID_MT6372P:
> +     case MT6370_VENID_MT6372CP:
> +             break;
> +     default:
> +             dev_err(info->dev, "Unknown Vendor ID 0x%02x\n", devinfo);
> +             return -ENODEV;
> +     }
> +
> +     return 0;
> +}
> +
> +static int mt6370_regmap_read(void *context, const void *reg_buf,
> +                           size_t reg_size, void *val_buf, size_t val_size)
> +{
> +     struct mt6370_info *info = context;
> +     u8 bank_idx, bank_addr;
> +     int ret;
> +
> +     bank_idx = *(u8 *)reg_buf;
> +     bank_addr = *(u8 *)(reg_buf + 1);
> +
> +     ret = i2c_smbus_read_i2c_block_data(info->i2c[bank_idx], bank_addr,
> +                                         val_size, val_buf);
> +     if (ret < 0)
> +             return ret;
> +     else if (ret != val_size)
> +             return -EIO;
> +
> +     return 0;
> +}
> +
> +static int mt6370_regmap_write(void *context, const void *data, size_t count)
> +{
> +     struct mt6370_info *info = context;
> +     u8 bank_idx, bank_addr;
> +     int len = count - MT6370_REG_ADDRLEN;
> +
> +     bank_idx = *(u8 *)data;
> +     bank_addr = *(u8 *)(data + 1);
> +
> +     return i2c_smbus_write_i2c_block_data(info->i2c[bank_idx], bank_addr,
> +                                           len, data + MT6370_REG_ADDRLEN);
> +}
> +
> +static const struct regmap_bus mt6370_regmap_bus = {
> +     .read           = mt6370_regmap_read,
> +     .write          = mt6370_regmap_write,
> +};
> +
> +static const struct regmap_config mt6370_regmap_config = {
> +     .reg_bits               = 16,
> +     .val_bits               = 8,
> +     .reg_format_endian      = REGMAP_ENDIAN_BIG,
> +     .max_register           = MT6370_REG_MAXADDR,
> +};
> +
> +static int mt6370_probe(struct i2c_client *i2c)
> +{
> +     struct mt6370_info *info;
> +     struct i2c_client *usbc_i2c;
> +     int ret;
> +
> +     info = devm_kzalloc(&i2c->dev, sizeof(*info), GFP_KERNEL);
> +     if (!info)
> +             return -ENOMEM;
> +
> +     info->dev = &i2c->dev;
> +
> +     usbc_i2c = devm_i2c_new_dummy_device(&i2c->dev, i2c->adapter,
> +                                          MT6370_USBC_I2CADDR);
> +     if (IS_ERR(usbc_i2c))
> +             return dev_err_probe(&i2c->dev, PTR_ERR(usbc_i2c),
> +                                  "Failed to register USBC I2C client\n");
> +
> +     /* Assign I2C client for PMU and TypeC */
> +     info->i2c[MT6370_PMU_I2C] = i2c;
> +     info->i2c[MT6370_USBC_I2C] = usbc_i2c;
> +
> +     info->regmap = devm_regmap_init(&i2c->dev, &mt6370_regmap_bus, info,
> +                                     &mt6370_regmap_config);

Apart from in mt6370_check_vendor_info() where is this actually used?

> +     if (IS_ERR(info->regmap))
> +             return dev_err_probe(&i2c->dev, PTR_ERR(info->regmap),
> +                                  "Failed to register regmap\n");
> +
> +     ret = mt6370_check_vendor_info(info);
> +     if (ret)
> +             return dev_err_probe(&i2c->dev, ret,
> +                                  "Failed to check vendor info\n");
> +
> +     ret = devm_regmap_add_irq_chip(&i2c->dev, info->regmap, i2c->irq,
> +                                    IRQF_ONESHOT, -1, &mt6370_irq_chip,
> +                                    &info->irq_data);
> +     if (ret)
> +             return dev_err_probe(&i2c->dev, ret,
> +                                  "Failed to add irq chip\n");
> +
> +     return devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_AUTO,
> +                                 mt6370_devices, ARRAY_SIZE(mt6370_devices),
> +                                 NULL, 0,
> +                                 regmap_irq_get_domain(info->irq_data));
> +}
> +
> +static const struct of_device_id mt6370_match_table[] = {
> +     { .compatible = "mediatek,mt6370", },
> +     {}
> +};
> +MODULE_DEVICE_TABLE(of, mt6370_match_table);
> +
> +static struct i2c_driver mt6370_driver = {
> +     .driver = {
> +             .name = "mt6370",
> +             .of_match_table = mt6370_match_table,
> +     },
> +     .probe_new = mt6370_probe,
> +};
> +module_i2c_driver(mt6370_driver);
> +
> +MODULE_AUTHOR("ChiYuan Huang <cy_hu...@richtek.com>");
> +MODULE_DESCRIPTION("MT6370 I2C Driver");

This is not an I2C driver.

> +MODULE_LICENSE("GPL v2");

-- 
Lee Jones [李琼斯]
Principal Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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