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Input: stmfts - abstract reading information from the firmware

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Improves readability and makes splitting power on function in following
commit easier.

Signed-off-by: David Heidelberg <david@ixit.cz>
Link: https://patch.msgid.link/20260409-stmfts5-v4-4-64fe62027db5@ixit.cz
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
David Heidelberg 2026-04-26 13:08:55 -07:00 committed by Dmitry Torokhov
parent 18ac49e763
commit 9ea34baf20
1 changed files with 23 additions and 12 deletions
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35
drivers/input/touchscreen/stmfts.c
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@ -518,22 +518,11 @@ static struct attribute *stmfts_sysfs_attrs[] = {
};
ATTRIBUTE_GROUPS(stmfts_sysfs);
static int stmfts_power_on(struct stmfts_data *sdata)
static int stmfts_read_system_info(struct stmfts_data *sdata)
{
int err;
u8 reg[8];
err = regulator_bulk_enable(ARRAY_SIZE(stmfts_supplies),
sdata->supplies);
if (err)
return err;
/*
* The datasheet does not specify the power on time, but considering
* that the reset time is < 10ms, I sleep 20ms to be sure
*/
msleep(20);
err = i2c_smbus_read_i2c_block_data(sdata->client, STMFTS_READ_INFO,
sizeof(reg), reg);
if (err < 0)
@ -547,6 +536,28 @@ static int stmfts_power_on(struct stmfts_data *sdata)
sdata->config_id = reg[4];
sdata->config_ver = reg[5];
return 0;
}
static int stmfts_power_on(struct stmfts_data *sdata)
{
int err;
err = regulator_bulk_enable(ARRAY_SIZE(stmfts_supplies),
sdata->supplies);
if (err)
return err;
/*
* The datasheet does not specify the power on time, but considering
* that the reset time is < 10ms, I sleep 20ms to be sure
*/
msleep(20);
err = stmfts_read_system_info(sdata);
if (err)
return err;
enable_irq(sdata->client->irq);
msleep(50);