From 63f4970a1219b5256e8ea952096c86dab666d312 Mon Sep 17 00:00:00 2001 From: Jeff LaBundy Date: Sun, 29 Jun 2025 18:33:30 -0700 Subject: [PATCH] Input: iqs7222 - explicitly define number of external channels The number of external channels is assumed to be a multiple of 10, but this is not the case for IQS7222D. As a result, some CRx pins are wrongly prevented from being assigned to some channels. Address this problem by explicitly defining the number of external channels for cases in which the number of external channels is not equal to the total number of available channels. Fixes: dd24e202ac72 ("Input: iqs7222 - add support for Azoteq IQS7222D") Signed-off-by: Jeff LaBundy Link: https://lore.kernel.org/r/aGHVf6HkyFZrzTPy@nixie71 Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov --- drivers/input/misc/iqs7222.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/input/misc/iqs7222.c b/drivers/input/misc/iqs7222.c index 80b917944b51e..6fac31c0d99f2 100644 --- a/drivers/input/misc/iqs7222.c +++ b/drivers/input/misc/iqs7222.c @@ -301,6 +301,7 @@ struct iqs7222_dev_desc { int allow_offset; int event_offset; int comms_offset; + int ext_chan; bool legacy_gesture; struct iqs7222_reg_grp_desc reg_grps[IQS7222_NUM_REG_GRPS]; }; @@ -315,6 +316,7 @@ static const struct iqs7222_dev_desc iqs7222_devs[] = { .allow_offset = 9, .event_offset = 10, .comms_offset = 12, + .ext_chan = 10, .reg_grps = { [IQS7222_REG_GRP_STAT] = { .base = IQS7222_SYS_STATUS, @@ -373,6 +375,7 @@ static const struct iqs7222_dev_desc iqs7222_devs[] = { .allow_offset = 9, .event_offset = 10, .comms_offset = 12, + .ext_chan = 10, .legacy_gesture = true, .reg_grps = { [IQS7222_REG_GRP_STAT] = { @@ -2244,7 +2247,7 @@ static int iqs7222_parse_chan(struct iqs7222_private *iqs7222, const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc; struct i2c_client *client = iqs7222->client; int num_chan = dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_row; - int ext_chan = rounddown(num_chan, 10); + int ext_chan = dev_desc->ext_chan ? : num_chan; int error, i; u16 *chan_setup = iqs7222->chan_setup[chan_index]; u16 *sys_setup = iqs7222->sys_setup; @@ -2445,7 +2448,7 @@ static int iqs7222_parse_sldr(struct iqs7222_private *iqs7222, const struct iqs7222_dev_desc *dev_desc = iqs7222->dev_desc; struct i2c_client *client = iqs7222->client; int num_chan = dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_row; - int ext_chan = rounddown(num_chan, 10); + int ext_chan = dev_desc->ext_chan ? : num_chan; int count, error, reg_offset, i; u16 *event_mask = &iqs7222->sys_setup[dev_desc->event_offset]; u16 *sldr_setup = iqs7222->sldr_setup[sldr_index]; -- 2.47.2