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* [PATCH] mfd: stmpe: Support disabling sub-functions
@ 2020-12-26  9:47 Oleksandr Suvorov
  2020-12-26 15:50 ` [Linux-stm32] " Ahmad Fatoum
  0 siblings, 1 reply; 11+ messages in thread
From: Oleksandr Suvorov @ 2020-12-26  9:47 UTC (permalink / raw)
  To: linux-next
  Cc: Marcel Ziswiler, Igor Opaniuk, Philippe Schenker,
	Oleksandr Suvorov, Alexandre Torgue, Lee Jones, Maxime Coquelin,
	linux-arm-kernel, linux-kernel, linux-stm32

Add support of sub-functions disabling. It allows one to define
an stmpe sub-function device in devicetree, but keep it disabled.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
---

 drivers/mfd/stmpe.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c
index 90f3292230c9..2182607b75f6 100644
--- a/drivers/mfd/stmpe.c
+++ b/drivers/mfd/stmpe.c
@@ -1358,6 +1358,9 @@ static void stmpe_of_probe(struct stmpe_platform_data *pdata,
 	pdata->autosleep = (pdata->autosleep_timeout) ? true : false;
 
 	for_each_child_of_node(np, child) {
+		/* skip disabled sub-function */
+		if (!of_device_is_available(child))
+			continue;
 		if (of_node_name_eq(child, "stmpe_gpio")) {
 			pdata->blocks |= STMPE_BLOCK_GPIO;
 		} else if (of_node_name_eq(child, "stmpe_keypad")) {
-- 
2.29.2


^ permalink raw reply related	[flat|nested] 11+ messages in thread
* [PATCH] mfd: stmpe: Support disabling sub-functions
@ 2021-10-27  8:21 Francesco Dolcini
  2021-10-27 16:14 ` Marcel Ziswiler
                   ` (3 more replies)
  0 siblings, 4 replies; 11+ messages in thread
From: Francesco Dolcini @ 2021-10-27  8:21 UTC (permalink / raw)
  To: Lee Jones, Maxime Coquelin, Alexandre Torgue
  Cc: marcel.ziswiler, Oleksandr Suvorov, Oleksandr Suvorov,
	Francesco Dolcini, linux-stm32, linux-arm-kernel, linux-kernel

From: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>

Add support of sub-functions disabling. It allows one to define
an stmpe sub-function device in devicetree, but keep it disabled.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Cc: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
---
Hello,
the main reason for this patch is to allow enabling/disabling sub-fuctions
using DTS overlay to enable more flexibility on SoM/Carrier boards
combinations.
---
 drivers/mfd/stmpe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c
index e928df95e316..aeb9ea55f97d 100644
--- a/drivers/mfd/stmpe.c
+++ b/drivers/mfd/stmpe.c
@@ -1361,7 +1361,7 @@ static void stmpe_of_probe(struct stmpe_platform_data *pdata,
 
 	pdata->autosleep = (pdata->autosleep_timeout) ? true : false;
 
-	for_each_child_of_node(np, child) {
+	for_each_available_child_of_node(np, child) {
 		if (of_node_name_eq(child, "stmpe_gpio")) {
 			pdata->blocks |= STMPE_BLOCK_GPIO;
 		} else if (of_node_name_eq(child, "stmpe_keypad")) {
-- 
2.25.1


^ permalink raw reply related	[flat|nested] 11+ messages in thread

end of thread, other threads:[~2021-11-24 15:45 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-12-26  9:47 [PATCH] mfd: stmpe: Support disabling sub-functions Oleksandr Suvorov
2020-12-26 15:50 ` [Linux-stm32] " Ahmad Fatoum
2020-12-26 16:28   ` [PATCH v2] " Oleksandr Suvorov
2021-10-27  8:21 [PATCH] " Francesco Dolcini
2021-10-27 16:14 ` Marcel Ziswiler
2021-10-28  0:37 ` Linus Walleij
2021-11-01  9:48 ` Francesco Dolcini
2021-11-01 12:13   ` Lee Jones
2021-11-02  8:21     ` Francesco Dolcini
2021-11-02 10:48       ` Lee Jones
2021-11-24 15:45 ` Lee Jones

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