linux-kernel - [PATCH V4 03/11] soc: mediatek: PMIC wrap: add wrapper callbacks for init_reg

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Message-Id: <1453894149-44127-3-git-send-email-blogic@openwrt.org>
Date:	Wed, 27 Jan 2016 12:29:01 +0100
From:	John Crispin <blogic@...nwrt.org>
To:	Matthias Brugger <matthias.bgg@...il.com>
Cc:	Sascha Hauer <s.hauer@...gutronix.de>,
	Henry Chen <henryc.chen@...iatek.com>,
	Thierry Reding <treding@...dia.com>,
	Flora Fu <flora.fu@...iatek.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
	John Crispin <blogic@...nwrt.org>
Subject: [PATCH V4 03/11] soc: mediatek: PMIC wrap: add wrapper callbacks for init_reg_clock

Split init_reg_clock up into SoC specific callbacks. The patch also
reorders the code to avoid the need for callback function prototypes.

Signed-off-by: John Crispin <blogic@...nwrt.org>
---
 drivers/soc/mediatek/mtk-pmic-wrap.c |   70 ++++++++++++++++++----------------
 1 file changed, 38 insertions(+), 32 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index 340c4b5..b22b664 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -354,24 +354,6 @@ enum pwrap_type {
 	PWRAP_MT8173,
 };
 
-struct pmic_wrapper_type {
-	int *regs;
-	enum pwrap_type type;
-	u32 arb_en_all;
-};
-
-static struct pmic_wrapper_type pwrap_mt8135 = {
-	.regs = mt8135_regs,
-	.type = PWRAP_MT8135,
-	.arb_en_all = 0x1ff,
-};
-
-static struct pmic_wrapper_type pwrap_mt8173 = {
-	.regs = mt8173_regs,
-	.type = PWRAP_MT8173,
-	.arb_en_all = 0x3f,
-};
-
 struct pmic_wrapper {
 	struct device *dev;
 	void __iomem *base;
@@ -385,6 +367,13 @@ struct pmic_wrapper {
 	void __iomem *bridge_base;
 };
 
+struct pmic_wrapper_type {
+	int *regs;
+	enum pwrap_type type;
+	u32 arb_en_all;
+	int (*init_reg_clock)(struct pmic_wrapper *wrp);
+};
+
 static inline int pwrap_is_mt8135(struct pmic_wrapper *wrp)
 {
 	return wrp->master->type == PWRAP_MT8135;
@@ -578,20 +567,23 @@ static int pwrap_init_sidly(struct pmic_wrapper *wrp)
 	return 0;
 }
 
-static int pwrap_init_reg_clock(struct pmic_wrapper *wrp)
+static int pwrap_mt8135_init_reg_clock(struct pmic_wrapper *wrp)
 {
-	if (pwrap_is_mt8135(wrp)) {
-		pwrap_writel(wrp, 0x4, PWRAP_CSHEXT);
-		pwrap_writel(wrp, 0x0, PWRAP_CSHEXT_WRITE);
-		pwrap_writel(wrp, 0x4, PWRAP_CSHEXT_READ);
-		pwrap_writel(wrp, 0x0, PWRAP_CSLEXT_START);
-		pwrap_writel(wrp, 0x0, PWRAP_CSLEXT_END);
-	} else {
-		pwrap_writel(wrp, 0x0, PWRAP_CSHEXT_WRITE);
-		pwrap_writel(wrp, 0x4, PWRAP_CSHEXT_READ);
-		pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_START);
-		pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_END);
-	}
+	pwrap_writel(wrp, 0x4, PWRAP_CSHEXT);
+	pwrap_writel(wrp, 0x0, PWRAP_CSHEXT_WRITE);
+	pwrap_writel(wrp, 0x4, PWRAP_CSHEXT_READ);
+	pwrap_writel(wrp, 0x0, PWRAP_CSLEXT_START);
+	pwrap_writel(wrp, 0x0, PWRAP_CSLEXT_END);
+
+	return 0;
+}
+
+static int pwrap_mt8173_init_reg_clock(struct pmic_wrapper *wrp)
+{
+	pwrap_writel(wrp, 0x0, PWRAP_CSHEXT_WRITE);
+	pwrap_writel(wrp, 0x4, PWRAP_CSHEXT_READ);
+	pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_START);
+	pwrap_writel(wrp, 0x2, PWRAP_CSLEXT_END);
 
 	return 0;
 }
@@ -699,7 +691,7 @@ static int pwrap_init(struct pmic_wrapper *wrp)
 
 	pwrap_writel(wrp, 1, PWRAP_WACS2_EN);
 
-	ret = pwrap_init_reg_clock(wrp);
+	ret = wrp->master->init_reg_clock(wrp);
 	if (ret)
 		return ret;
 
@@ -814,6 +806,20 @@ static const struct regmap_config pwrap_regmap_config = {
 	.max_register = 0xffff,
 };
 
+static struct pmic_wrapper_type pwrap_mt8135 = {
+	.regs = mt8135_regs,
+	.type = PWRAP_MT8135,
+	.arb_en_all = 0x1ff,
+	.init_reg_clock = pwrap_mt8135_init_reg_clock,
+};
+
+static struct pmic_wrapper_type pwrap_mt8173 = {
+	.regs = mt8173_regs,
+	.type = PWRAP_MT8173,
+	.arb_en_all = 0x3f,
+	.init_reg_clock = pwrap_mt8173_init_reg_clock,
+};
+
 static struct of_device_id of_pwrap_match_tbl[] = {
 	{
 		.compatible = "mediatek,mt8135-pwrap",
-- 
1.7.10.4