linux-kernel - [DO NOT APPLY PATCH v8 10/15] pwm: rzg2l-gpt: Add support for output disable when both output low

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Message-ID: <20251121160842.371922-11-biju.das.jz@bp.renesas.com>
Date: Fri, 21 Nov 2025 16:08:17 +0000
From: Biju <biju.das.au@...il.com>
To: Uwe Kleine-König <ukleinek@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Linus Walleij <linus.walleij@...aro.org>
Cc: Biju Das <biju.das.jz@...renesas.com>,
	linux-kernel@...r.kernel.org,
	linux-pwm@...r.kernel.org,
	Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>,
	Biju Das <biju.das.au@...il.com>,
	linux-renesas-soc@...r.kernel.org,
	linux-gpio@...r.kernel.org
Subject: [DO NOT APPLY PATCH v8 10/15] pwm: rzg2l-gpt: Add support for output disable when both output low

From: Biju Das <biju.das.jz@...renesas.com>

This patch adds support for output disable request from gpt,
when same time output level is low.

Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
---
 drivers/pwm/pwm-rzg2l-gpt.c   | 9 +++++++++
 include/linux/pwm/rzg2l-gpt.h | 6 ++++++
 2 files changed, 15 insertions(+)

diff --git a/drivers/pwm/pwm-rzg2l-gpt.c b/drivers/pwm/pwm-rzg2l-gpt.c
index 8006c62068b6..a0100e1b948d 100644
--- a/drivers/pwm/pwm-rzg2l-gpt.c
+++ b/drivers/pwm/pwm-rzg2l-gpt.c
@@ -85,6 +85,7 @@
 
 #define RZG2L_GTINTAD_GRP_MASK	GENMASK(25, 24)
 #define RZG2L_GTINTAD_OUTPUT_DISABLE_SAME_LEVEL_HIGH	BIT(29)
+#define RZG2L_GTINTAD_OUTPUT_DISABLE_SAME_LEVEL_LOW	BIT(30)
 
 #define RZG2L_GTST_OABHF			BIT(29)
 #define RZG2L_GTST_OABLF			BIT(30)
@@ -493,6 +494,14 @@ int rzg2l_gpt_poeg_disable_req_both_high(void *dev, u8 grp, bool on)
 }
 EXPORT_SYMBOL_GPL(rzg2l_gpt_poeg_disable_req_both_high);
 
+int rzg2l_gpt_poeg_disable_req_both_low(void *dev, u8 grp, bool on)
+{
+	int id = RZG2L_GTINTAD_OUTPUT_DISABLE_SAME_LEVEL_LOW;
+
+	return rzg2l_gpt_poeg_disable_req_endisable(dev, grp, id, on);
+}
+EXPORT_SYMBOL_GPL(rzg2l_gpt_poeg_disable_req_both_low);
+
 /*
  * This function links a poeg group{A,B,C,D} with a gpt channel{0..7} and
  * configure the pin for output disable.
diff --git a/include/linux/pwm/rzg2l-gpt.h b/include/linux/pwm/rzg2l-gpt.h
index 718aaeca39f2..adb5b9cfc8b3 100644
--- a/include/linux/pwm/rzg2l-gpt.h
+++ b/include/linux/pwm/rzg2l-gpt.h
@@ -7,6 +7,7 @@ u32 rzg2l_gpt_poeg_disable_req_irq_status(void *dev, u8 grp);
 int rzg2l_gpt_poeg_disable_req_clr(void *gpt_device, u8 grp);
 int rzg2l_gpt_pin_reenable(void *gpt_device, u8 grp);
 int rzg2l_gpt_poeg_disable_req_both_high(void *gpt_device, u8 grp, bool on);
+int rzg2l_gpt_poeg_disable_req_both_low(void *gpt_device, u8 grp, bool on);
 #else
 static inline u32 rzg2l_gpt_poeg_disable_req_irq_status(void *dev, u8 grp)
 {
@@ -28,6 +29,11 @@ static inline int rzg2l_gpt_poeg_disable_req_both_high(void *gpt_device, u8 grp,
 	return -ENODEV;
 }
 
+static inline int rzg2l_gpt_poeg_disable_req_both_low(void *gpt_device, u8 grp, bool on)
+{
+	return -ENODEV;
+}
+
 #endif
 
 #endif /* __LINUX_PWM_RENESAS_RZG2L_GPT_H__ */
-- 
2.43.0