From: Adam Ward Adam.Ward.opensource@diasemi.com
[ Upstream commit 013592be146a10d3567c0062cd1416faab060704 ]
This patch fixes identification of DA913x parts by the DA9121 driver, where a lack of clarity lead to implementation on the basis that variant IDs were to be identical to the equivalent rated non-automotive parts.
There is a new emphasis on the DT identity to cope with overlap in these ID's - this is not considered to be problematic, because projects would be exclusively using automotive or consumer grade parts.
Signed-off-by: Adam Ward Adam.Ward.opensource@diasemi.com Link: https://lore.kernel.org/r/20210421120306.DB5B880007F@slsrvapps-01.diasemi.co... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/regulator/da9121-regulator.c | 80 ++++++++++++++++++---------- drivers/regulator/da9121-regulator.h | 13 +++++ 2 files changed, 65 insertions(+), 28 deletions(-)
diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c index a2ede7d7897e..08cbf688e14d 100644 --- a/drivers/regulator/da9121-regulator.c +++ b/drivers/regulator/da9121-regulator.c @@ -40,6 +40,7 @@ struct da9121 { unsigned int passive_delay; int chip_irq; int variant_id; + int subvariant_id; };
/* Define ranges for different variants, enabling translation to/from @@ -812,7 +813,6 @@ static struct regmap_config da9121_2ch_regmap_config = { static int da9121_check_device_type(struct i2c_client *i2c, struct da9121 *chip) { u32 device_id; - u8 chip_id = chip->variant_id; u32 variant_id; u8 variant_mrc, variant_vrc; char *type; @@ -839,22 +839,34 @@ static int da9121_check_device_type(struct i2c_client *i2c, struct da9121 *chip)
variant_vrc = variant_id & DA9121_MASK_OTP_VARIANT_ID_VRC;
- switch (variant_vrc) { - case DA9121_VARIANT_VRC: - type = "DA9121/DA9130"; - config_match = (chip_id == DA9121_TYPE_DA9121_DA9130); + switch (chip->subvariant_id) { + case DA9121_SUBTYPE_DA9121: + type = "DA9121"; + config_match = (variant_vrc == DA9121_VARIANT_VRC); break; - case DA9220_VARIANT_VRC: - type = "DA9220/DA9132"; - config_match = (chip_id == DA9121_TYPE_DA9220_DA9132); + case DA9121_SUBTYPE_DA9130: + type = "DA9130"; + config_match = (variant_vrc == DA9130_VARIANT_VRC); break; - case DA9122_VARIANT_VRC: - type = "DA9122/DA9131"; - config_match = (chip_id == DA9121_TYPE_DA9122_DA9131); + case DA9121_SUBTYPE_DA9220: + type = "DA9220"; + config_match = (variant_vrc == DA9220_VARIANT_VRC); break; - case DA9217_VARIANT_VRC: + case DA9121_SUBTYPE_DA9132: + type = "DA9132"; + config_match = (variant_vrc == DA9132_VARIANT_VRC); + break; + case DA9121_SUBTYPE_DA9122: + type = "DA9122"; + config_match = (variant_vrc == DA9122_VARIANT_VRC); + break; + case DA9121_SUBTYPE_DA9131: + type = "DA9131"; + config_match = (variant_vrc == DA9131_VARIANT_VRC); + break; + case DA9121_SUBTYPE_DA9217: type = "DA9217"; - config_match = (chip_id == DA9121_TYPE_DA9217); + config_match = (variant_vrc == DA9217_VARIANT_VRC); break; default: type = "Unknown"; @@ -892,15 +904,27 @@ static int da9121_assign_chip_model(struct i2c_client *i2c,
chip->dev = &i2c->dev;
- switch (chip->variant_id) { - case DA9121_TYPE_DA9121_DA9130: - fallthrough; - case DA9121_TYPE_DA9217: + /* Use configured subtype to select the regulator descriptor index and + * register map, common to both consumer and automotive grade variants + */ + switch (chip->subvariant_id) { + case DA9121_SUBTYPE_DA9121: + case DA9121_SUBTYPE_DA9130: + chip->variant_id = DA9121_TYPE_DA9121_DA9130; regmap = &da9121_1ch_regmap_config; break; - case DA9121_TYPE_DA9122_DA9131: - fallthrough; - case DA9121_TYPE_DA9220_DA9132: + case DA9121_SUBTYPE_DA9217: + chip->variant_id = DA9121_TYPE_DA9217; + regmap = &da9121_1ch_regmap_config; + break; + case DA9121_SUBTYPE_DA9122: + case DA9121_SUBTYPE_DA9131: + chip->variant_id = DA9121_TYPE_DA9122_DA9131; + regmap = &da9121_2ch_regmap_config; + break; + case DA9121_SUBTYPE_DA9220: + case DA9121_SUBTYPE_DA9132: + chip->variant_id = DA9121_TYPE_DA9220_DA9132; regmap = &da9121_2ch_regmap_config; break; } @@ -975,13 +999,13 @@ regmap_error: }
static const struct of_device_id da9121_dt_ids[] = { - { .compatible = "dlg,da9121", .data = (void *) DA9121_TYPE_DA9121_DA9130 }, - { .compatible = "dlg,da9130", .data = (void *) DA9121_TYPE_DA9121_DA9130 }, - { .compatible = "dlg,da9217", .data = (void *) DA9121_TYPE_DA9217 }, - { .compatible = "dlg,da9122", .data = (void *) DA9121_TYPE_DA9122_DA9131 }, - { .compatible = "dlg,da9131", .data = (void *) DA9121_TYPE_DA9122_DA9131 }, - { .compatible = "dlg,da9220", .data = (void *) DA9121_TYPE_DA9220_DA9132 }, - { .compatible = "dlg,da9132", .data = (void *) DA9121_TYPE_DA9220_DA9132 }, + { .compatible = "dlg,da9121", .data = (void *) DA9121_SUBTYPE_DA9121 }, + { .compatible = "dlg,da9130", .data = (void *) DA9121_SUBTYPE_DA9130 }, + { .compatible = "dlg,da9217", .data = (void *) DA9121_SUBTYPE_DA9217 }, + { .compatible = "dlg,da9122", .data = (void *) DA9121_SUBTYPE_DA9122 }, + { .compatible = "dlg,da9131", .data = (void *) DA9121_SUBTYPE_DA9131 }, + { .compatible = "dlg,da9220", .data = (void *) DA9121_SUBTYPE_DA9220 }, + { .compatible = "dlg,da9132", .data = (void *) DA9121_SUBTYPE_DA9132 }, { } }; MODULE_DEVICE_TABLE(of, da9121_dt_ids); @@ -1011,7 +1035,7 @@ static int da9121_i2c_probe(struct i2c_client *i2c, }
chip->pdata = i2c->dev.platform_data; - chip->variant_id = da9121_of_get_id(&i2c->dev); + chip->subvariant_id = da9121_of_get_id(&i2c->dev);
ret = da9121_assign_chip_model(i2c, chip); if (ret < 0) diff --git a/drivers/regulator/da9121-regulator.h b/drivers/regulator/da9121-regulator.h index 3c34cb889ca8..357f416e17c1 100644 --- a/drivers/regulator/da9121-regulator.h +++ b/drivers/regulator/da9121-regulator.h @@ -29,6 +29,16 @@ enum da9121_variant { DA9121_TYPE_DA9217 };
+enum da9121_subvariant { + DA9121_SUBTYPE_DA9121, + DA9121_SUBTYPE_DA9130, + DA9121_SUBTYPE_DA9220, + DA9121_SUBTYPE_DA9132, + DA9121_SUBTYPE_DA9122, + DA9121_SUBTYPE_DA9131, + DA9121_SUBTYPE_DA9217 +}; + /* Minimum, maximum and default polling millisecond periods are provided * here as an example. It is expected that any final implementation will * include a modification of these settings to match the required @@ -279,6 +289,9 @@ enum da9121_variant { #define DA9220_VARIANT_VRC 0x0 #define DA9122_VARIANT_VRC 0x2 #define DA9217_VARIANT_VRC 0x7 +#define DA9130_VARIANT_VRC 0x0 +#define DA9131_VARIANT_VRC 0x1 +#define DA9132_VARIANT_VRC 0x2
/* DA9121_REG_OTP_CUSTOMER_ID */