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| author |  Andre Werner <andre.werner@systec-electronic.com>
| 2023-08-18 10:37:21 +0200 |
|---|---|---|
| committer |  Lee Jones <lee@kernel.org>
| 2023-08-18 21:43:02 +0100 |
| commit | c01467355f8eb126cab0ef28b66bb506fe6a2e21 (patch) | |
| tree | c181ea63a0ee6d1bae835e29460f346c02c424a3 /drivers/mfd/tps65086.c | |
| parent | Linux 6.5-rc1 (diff) | |
| download | linux-c01467355f8eb126cab0ef28b66bb506fe6a2e21.tar.gz linux-c01467355f8eb126cab0ef28b66bb506fe6a2e21.tar.bz2 linux-c01467355f8eb126cab0ef28b66bb506fe6a2e21.zip | |
mfd: tps65086: Read DEVICE ID register 1 from device
This commit prepares a following commit for the regulator part of the MFD.
The driver should support different device chips that differ in their
register definitions, for instance to control LDOA1 and SWB2.
So it is necessary to use a dedicated regulator description for a
specific device variant. Thus, the content from DEVICEID Register 1 is
used to choose a dedicated configuration between the different device
variants.
Signed-off-by: Andre Werner <andre.werner@systec-electronic.com>
Link: https://lore.kernel.org/r/20230818083721.29790-2-andre.werner@systec-electronic.com
Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/mfd/tps65086.c')
| -rw-r--r-- | drivers/mfd/tps65086.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/mfd/tps65086.c b/drivers/mfd/tps65086.c index 6a21000aad4a..9bb7d7d8dcfc 100644 --- a/drivers/mfd/tps65086.c +++ b/drivers/mfd/tps65086.c @@ -81,16 +81,23 @@ static int tps65086_probe(struct i2c_client *client) return PTR_ERR(tps->regmap); } - ret = regmap_read(tps->regmap, TPS65086_DEVICEID, &version); + /* Store device ID to load regulator configuration that fit to IC variant */ + ret = regmap_read(tps->regmap, TPS65086_DEVICEID1, &tps->chip_id); if (ret) { - dev_err(tps->dev, "Failed to read revision register\n"); + dev_err(tps->dev, "Failed to read revision register 1\n"); + return ret; + } + + ret = regmap_read(tps->regmap, TPS65086_DEVICEID2, &version); + if (ret) { + dev_err(tps->dev, "Failed to read revision register 2\n"); return ret; } dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n", - (version & TPS65086_DEVICEID_PART_MASK), - (char)((version & TPS65086_DEVICEID_OTP_MASK) >> 4) + 'A', - (version & TPS65086_DEVICEID_REV_MASK) >> 6); + (version & TPS65086_DEVICEID2_PART_MASK), + (char)((version & TPS65086_DEVICEID2_OTP_MASK) >> 4) + 'A', + (version & TPS65086_DEVICEID2_REV_MASK) >> 6); if (tps->irq > 0) { ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0, |