diff options
| author | Griffin Kroah-Hartman <griffin.kroah@fairphone.com> | 2026-03-03 17:40:41 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2026-04-01 09:08:33 -0700 |
| commit | df53055c540fe8850f587a6ef0d6944bdd909483 (patch) | |
| tree | 08c01fa37476a0567fcfdad6d32754908c592b5d /drivers/input/misc | |
| parent | b73724b1defe253fa9d76be4bcb585ef37ef4d68 (diff) | |
Input: aw86927 - add support for Awinic AW86938
Add support for the I2C-connected Awinic AW86938 LRA haptic controller.
The AW86938 has a similar but slightly different register layout. In
particular, the boost mode register values.
The AW86938 also has some extra features that aren't implemented
in this driver yet.
Signed-off-by: Griffin Kroah-Hartman <griffin.kroah@fairphone.com>
Link: https://patch.msgid.link/20260302-aw86938-driver-v4-3-92c865df9cca@fairphone.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/misc')
| -rw-r--r-- | drivers/input/misc/aw86927.c | 52 |
1 files changed, 44 insertions, 8 deletions
diff --git a/drivers/input/misc/aw86927.c b/drivers/input/misc/aw86927.c index 454e1af23df0..f53b8f004cb3 100644 --- a/drivers/input/misc/aw86927.c +++ b/drivers/input/misc/aw86927.c @@ -43,6 +43,12 @@ #define AW86927_PLAYCFG1_BST_VOUT_VREFSET_MASK GENMASK(6, 0) #define AW86927_PLAYCFG1_BST_8500MV 0x50 +#define AW86938_PLAYCFG1_REG 0x06 +#define AW86938_PLAYCFG1_BST_MODE_MASK GENMASK(5, 5) +#define AW86938_PLAYCFG1_BST_MODE_BYPASS 0 +#define AW86938_PLAYCFG1_BST_VOUT_VREFSET_MASK GENMASK(4, 0) +#define AW86938_PLAYCFG1_BST_7000MV 0x11 + #define AW86927_PLAYCFG2_REG 0x07 #define AW86927_PLAYCFG3_REG 0x08 @@ -140,6 +146,7 @@ #define AW86927_CHIPIDH_REG 0x57 #define AW86927_CHIPIDL_REG 0x58 #define AW86927_CHIPID 0x9270 +#define AW86938_CHIPID 0x9380 #define AW86927_TMCFG_REG 0x5b #define AW86927_TMCFG_UNLOCK 0x7d @@ -173,7 +180,13 @@ enum aw86927_work_mode { AW86927_RAM_MODE, }; +enum aw86927_model { + AW86927, + AW86938, +}; + struct aw86927_data { + enum aw86927_model model; struct work_struct play_work; struct device *dev; struct input_dev *input_dev; @@ -565,13 +578,26 @@ static int aw86927_haptic_init(struct aw86927_data *haptics) if (err) return err; - err = regmap_update_bits(haptics->regmap, - AW86927_PLAYCFG1_REG, - AW86927_PLAYCFG1_BST_VOUT_VREFSET_MASK, - FIELD_PREP(AW86927_PLAYCFG1_BST_VOUT_VREFSET_MASK, - AW86927_PLAYCFG1_BST_8500MV)); - if (err) - return err; + switch (haptics->model) { + case AW86927: + err = regmap_update_bits(haptics->regmap, + AW86927_PLAYCFG1_REG, + AW86927_PLAYCFG1_BST_VOUT_VREFSET_MASK, + FIELD_PREP(AW86927_PLAYCFG1_BST_VOUT_VREFSET_MASK, + AW86927_PLAYCFG1_BST_8500MV)); + if (err) + return err; + break; + case AW86938: + err = regmap_update_bits(haptics->regmap, + AW86938_PLAYCFG1_REG, + AW86938_PLAYCFG1_BST_VOUT_VREFSET_MASK, + FIELD_PREP(AW86938_PLAYCFG1_BST_VOUT_VREFSET_MASK, + AW86938_PLAYCFG1_BST_7000MV)); + if (err) + return err; + break; + } err = regmap_update_bits(haptics->regmap, AW86927_PLAYCFG3_REG, @@ -599,6 +625,9 @@ static int aw86927_ram_init(struct aw86927_data *haptics) FIELD_PREP(AW86927_SYSCTRL3_EN_RAMINIT_MASK, AW86927_SYSCTRL3_EN_RAMINIT_ON)); + /* AW86938 wants a 1ms delay here */ + usleep_range(1000, 1500); + /* Set base address for the start of the SRAM waveforms */ err = regmap_write(haptics->regmap, AW86927_BASEADDRH_REG, AW86927_BASEADDRH_VAL); @@ -717,7 +746,14 @@ static int aw86927_detect(struct aw86927_data *haptics) chip_id = be16_to_cpu(read_buf); - if (chip_id != AW86927_CHIPID) { + switch (chip_id) { + case AW86927_CHIPID: + haptics->model = AW86927; + break; + case AW86938_CHIPID: + haptics->model = AW86938; + break; + default: dev_err(haptics->dev, "Unexpected CHIPID value 0x%x\n", chip_id); return -ENODEV; } |