[PATCH v2 2/5] mfd: stmpe: Probe sub-function by compatible

From: Francesco Dolcini
Date: Tue Jul 12 2022 - 12:34:03 EST


Use sub-function of_compatible during probe, instead of using the node
name. The code should not rely on the node names during probe, in
addition to that the previously hard-coded node names are not compliant
to the latest naming convention (they are not generic and they use
underscores), and it was broken by mistake already once [1].

[1] commit 56086b5e804f ("ARM: dts: imx6qdl-apalis: Avoid underscore in node name")

Suggested-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
Signed-off-by: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx>
---
v2:
- remove define usage for compatible strings
- moved rotator removal from probe to a separate patch
---
drivers/mfd/stmpe.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c
index 4aa4ac2ff406..987e251d90ae 100644
--- a/drivers/mfd/stmpe.c
+++ b/drivers/mfd/stmpe.c
@@ -1362,17 +1362,16 @@ static void stmpe_of_probe(struct stmpe_platform_data *pdata,
pdata->autosleep = (pdata->autosleep_timeout) ? true : false;

for_each_available_child_of_node(np, child) {
- if (of_node_name_eq(child, "stmpe_gpio")) {
+ if (of_device_is_compatible(child, stmpe_gpio_cell.of_compatible))
pdata->blocks |= STMPE_BLOCK_GPIO;
- } else if (of_node_name_eq(child, "stmpe_keypad")) {
+ else if (of_device_is_compatible(child, stmpe_keypad_cell.of_compatible))
pdata->blocks |= STMPE_BLOCK_KEYPAD;
- } else if (of_node_name_eq(child, "stmpe_touchscreen")) {
+ else if (of_device_is_compatible(child, stmpe_ts_cell.of_compatible))
pdata->blocks |= STMPE_BLOCK_TOUCHSCREEN;
- } else if (of_node_name_eq(child, "stmpe_adc")) {
+ else if (of_device_is_compatible(child, stmpe_adc_cell.of_compatible))
pdata->blocks |= STMPE_BLOCK_ADC;
- } else if (of_node_name_eq(child, "stmpe_pwm")) {
+ else if (of_device_is_compatible(child, stmpe_pwm_cell.of_compatible))
pdata->blocks |= STMPE_BLOCK_PWM;
- }
}
}

--
2.25.1