linux-kernel - [RESEND v3 2/2] pinctrl: mediatek: adapt to multi-base design

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Message-ID: <20250125025145.14405-3-ot_chhao.chang@mediatek.com>
Date: Sat, 25 Jan 2025 10:51:23 +0800
From: Hao Chang <ot_chhao.chang@...iatek.com>
To: Sean Wang <seann.wang@...nel.org>, Linus Walleij
	<linus.walleij@...aro.org>, Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
CC: Wenbin Mei <wenbin.mei@...iatek.com>, Axe Yang <axe.yang@...iatek.com>,
	Qingliang Li <qingliang.li@...iatek.com>, Hanks Chen
	<hanks.chen@...iatek.com>, Chunhui Li <chunhui.li@...iatek.com>,
	<linux-mediatek@...ts.infradead.org>, <linux-gpio@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, Hao
 Chang <ot_chhao.chang@...iatek.com>
Subject: [RESEND v3 2/2] pinctrl: mediatek: adapt to multi-base design

The eint num will obtain the operation address through pins.
Change the traversal method of irq handle from traversing a set of
registers to traversing one by one.

Change-Id: I3962b78042d32501a73153201cddf52c6b62a695
Signed-off-by: Hao Chang <ot_chhao.chang@...iatek.com>
Signed-off-by: Qingliang Li <qingliang.li@...iatek.com>
---
 drivers/pinctrl/mediatek/mtk-eint.c | 38 +++++++++++++++++++----------
 1 file changed, 25 insertions(+), 13 deletions(-)

diff --git a/drivers/pinctrl/mediatek/mtk-eint.c b/drivers/pinctrl/mediatek/mtk-eint.c
index 540245c3128d..949a20196f74 100644
--- a/drivers/pinctrl/mediatek/mtk-eint.c
+++ b/drivers/pinctrl/mediatek/mtk-eint.c
@@ -513,6 +513,7 @@ EXPORT_SYMBOL_GPL(mtk_eint_find_irq);
 int mtk_eint_do_init(struct mtk_eint *eint)
 {
 	unsigned int size, i, port;
+	struct mtk_pinctrl *hw = (struct mtk_pinctrl *)eint->pctl;
 
 	/* If clients don't assign a specific regs, let's use generic one */
 	if (!eint->regs)
@@ -523,11 +524,11 @@ int mtk_eint_do_init(struct mtk_eint *eint)
 	if (!eint->base_pin_num)
 		return -ENOMEM;
 
-	if (!eint->pins) {
+	if (eint->nbase == 1) {
 		size = eint->hw->ap_num * sizeof(struct mtk_eint_pin);
 		eint->pins = devm_kmalloc(eint->dev, size, GFP_KERNEL);
 		if (!eint->pins)
-			return -ENOMEM;
+			goto err_eint;
 
 		eint->base_pin_num[0] = eint->hw->ap_num;
 		for (i = 0; i < eint->hw->ap_num; i++) {
@@ -536,34 +537,29 @@ int mtk_eint_do_init(struct mtk_eint *eint)
 			eint->pins[i].debounce = (i < eint->hw->db_cnt) ? 1 : 0;
 		}
 	} else {
+		eint->pins = hw->soc->eint_pin;
 		for (i = 0; i < eint->hw->ap_num; i++)
 			eint->base_pin_num[eint->pins[i].instance]++;
 	}
 
 	eint->wake_mask = devm_kmalloc(eint->dev, eint->nbase * sizeof(u32 *), GFP_KERNEL);
-	if (!eint->wake_mask)
-		return -ENOMEM;
-
 	eint->cur_mask = devm_kmalloc(eint->dev, eint->nbase * sizeof(u32 *), GFP_KERNEL);
-	if (!eint->wake_mask)
-		return -ENOMEM;
+	if (!eint->wake_mask || !eint->wake_mask)
+		goto err_eint;
 
 	for (i = 0; i < eint->nbase; i++) {
 		port = (eint->base_pin_num[i] + 31) / 32;
 		eint->wake_mask[i] = devm_kzalloc(eint->dev, port * sizeof(u32), GFP_KERNEL);
-		if (!eint->wake_mask[i])
-			return -ENOMEM;
-
 		eint->cur_mask[i] = devm_kzalloc(eint->dev, port * sizeof(u32), GFP_KERNEL);
-		if (!eint->cur_mask[i])
-			return -ENOMEM;
+		if (!eint->cur_mask[i] || !eint->wake_mask[i])
+			goto err_eint;
 	}
 
 	eint->domain = irq_domain_add_linear(eint->dev->of_node,
 					     eint->hw->ap_num,
 					     &irq_domain_simple_ops, NULL);
 	if (!eint->domain)
-		return -ENOMEM;
+		goto err_eint;
 
 	if (eint->hw->db_time) {
 		for (i = 0; i < MTK_EINT_DBNC_MAX; i++)
@@ -585,6 +581,22 @@ int mtk_eint_do_init(struct mtk_eint *eint)
 					 eint);
 
 	return 0;
+
+err_eint:
+	for (i = 0; i < eint->nbase; i++) {
+		if (eint->wake_mask[i])
+			devm_kfree(eint->dev, eint->wake_mask[i]);
+		if (eint->cur_mask[i])
+			devm_kfree(eint->dev, eint->cur_mask[i]);
+	}
+	if (eint->cur_mask)
+		devm_kfree(eint->dev, eint->cur_mask);
+	if (eint->wake_mask)
+		devm_kfree(eint->dev, eint->wake_mask);
+	if (eint->nbase == 1)
+		devm_kfree(eint->dev, eint->pins);
+	devm_kfree(eint->dev, eint->base_pin_num);
+	return -ENOMEM;
 }
 EXPORT_SYMBOL_GPL(mtk_eint_do_init);
 
-- 
2.46.0