Hi Lee,
On 24 March 2014 08:03 Lee Jones wrote:
>On Sun, 23 Mar 2014, Opensource [Steve Twiss] wrote:
>> From: Opensource [Steve Twiss] <stwiss.opensource@xxxxxxxxxxx>
>>
>> Dependencies required for DA9063 HWMON support.
>>
>> Signed-off-by: Opensource [Steve Twiss] <stwiss.opensource@xxxxxxxxxxx>
>> ---
>>
>> drivers/mfd/da9063-core.c | 13 ++++++++++++-
>> include/linux/mfd/da9063/core.h | 3 +++
>> include/linux/mfd/da9063/pdata.h | 18 ++++++++++++++++++
>> 3 files changed, 33 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/mfd/da9063-core.c b/drivers/mfd/da9063-core.c
>> index e70ae31..24c1838 100644
>> --- a/drivers/mfd/da9063-core.c
>> +++ b/drivers/mfd/da9063-core.c
>> @@ -111,6 +111,7 @@ int da9063_device_init(struct da9063 *da9063, unsigned
>int irq)
>> {
>> struct da9063_pdata *pdata = da9063->dev->platform_data;
>> int model, variant_id, variant_code;
>> + int t_offset = 0;
>> int ret;
>>
>> if (pdata) {
>> @@ -171,8 +172,18 @@ int da9063_device_init(struct da9063 *da9063, unsigned
>int irq)
>> ret = mfd_add_devices(da9063->dev, -1, da9063_devs,
>> ARRAY_SIZE(da9063_devs), NULL, da9063->irq_base,
>> NULL);
>> - if (ret)
>> + if (ret) {
>> dev_err(da9063->dev, "Cannot add MFD cells\n");
>> + return ret;
>> + }
>> +
>> + ret = regmap_read(da9063->regmap, DA9063_REG_T_OFFSET, &t_offset);
>> + if (ret < 0)
>> + dev_warn(da9063->dev,
>> + "Temperature trimming value cannot be read (defaulting
>to 0)\n");
>> +
>> + /* pass this on to the hwmon driver */
>> + da9063->t_offset = t_offset;
>
>What's the logic for using a local variable for this prior to setting
>the attribute in the shared container?
>
Yep -- that's bad. I'll remove it.
>> return ret;
>> }
>> diff --git a/include/linux/mfd/da9063/core.h
>b/include/linux/mfd/da9063/core.h
>> index 00a9aac..7327d37 100644
>> --- a/include/linux/mfd/da9063/core.h
>> +++ b/include/linux/mfd/da9063/core.h
>> @@ -86,6 +86,9 @@ struct da9063 {
>> int chip_irq;
>> unsigned int irq_base;
>> struct regmap_irq_chip_data *regmap_irq;
>> +
>> + /* Trimming */
>> + int t_offset;
>> };
>>
>> int da9063_device_init(struct da9063 *da9063, unsigned int irq);
>> diff --git a/include/linux/mfd/da9063/pdata.h
>b/include/linux/mfd/da9063/pdata.h
>> index 95c8742..576033e 100644
>> --- a/include/linux/mfd/da9063/pdata.h
>> +++ b/include/linux/mfd/da9063/pdata.h
>> @@ -62,6 +62,23 @@ struct da9063_regulators_pdata {
>> struct da9063_regulator_data *regulator_data;
>> };
>>
>> +/* HWMON platform data */
>> +#define DA9063_SET_ADCIN1_CUR_1UA 0x00
>> +#define DA9063_SET_ADCIN1_CUR_2UA 0x01
>> +#define DA9063_SET_ADCIN1_CUR_10UA 0x02
>> +#define DA9063_SET_ADCIN1_CUR_40UA 0x03
>> +#define DA9063_SET_ADCIN2_CUR_1UA 0x00
>> +#define DA9063_SET_ADCIN2_CUR_2UA 0x01
>> +#define DA9063_SET_ADCIN2_CUR_10UA 0x02
>> +#define DA9063_SET_ADCIN2_CUR_40UA 0x03
>> +#define DA9063_SET_ADCIN3_CUR_10UA 0x00
>
>Why differentiate? More succinctly:
>
>/* HWMON platform data */
>#define DA9063_SET_CUR_1UA 0x00
>#define DA9063_SET_CUR_2UA 0x01
>#define DA9063_SET_CUR_10UA 0x02
>#define DA9063_SET_CUR_40UA 0x03
>
>
Oh yeh... that makes much more sense.
I should have thought of that :(
Sorry you had to review that part.
>> +struct da9063_hwmon_pdata {
>> + unsigned char adcin1_cur;
>> + unsigned char adcin2_cur;
>> + unsigned char adcin3_cur;
>> +};
>> +
>>
>
>Now there are two new lines here.
>
Will erase them.
>> /*
>> * RGB LED configuration
>> @@ -106,6 +123,7 @@ struct da9063_pdata {
>> unsigned flags;
>> struct da9063_regulators_pdata *regulators_pdata;
>> struct led_platform_data *leds_pdata;
>> + struct da9063_hwmon_pdata *hwmon_pdata;
>> };
>
>Does this device support Device Tree?
>
Ah, well no. I've not added any DT stuff.
Is that an essential requirement now?
>> #endif /* __MFD_DA9063_PDATA_H__ */
>
>--
>Lee Jones
>Linaro STMicroelectronics Landing Team Lead
>Linaro.org │ Open source software for ARM SoCs
>Follow Linaro: Facebook | Twitter | Blog
Thanks,
Steve
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