openwrt/target/linux/ipq806x/patches/0032-pinctrl-msm-Simplify-msm_config_reg-and-callers.patch

From 2d9ffb1a3f87396c3b792124870ef63fc27c568f Mon Sep 17 00:00:00 2001
From: Stephen Boyd <[email protected]>
Date: Thu, 6 Mar 2014 22:44:46 -0800
Subject: [PATCH 032/182] pinctrl: msm: Simplify msm_config_reg() and callers

We don't need to check for a negative reg here because reg is
always the same and is always non-negative. Also, collapse the
switch statement down for the duplicate cases.

Signed-off-by: Stephen Boyd <[email protected]>
Acked-by: Bjorn Andersson <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
---
 drivers/pinctrl/pinctrl-msm.c |   29 +++++------------------------
 1 file changed, 5 insertions(+), 24 deletions(-)

--- a/drivers/pinctrl/pinctrl-msm.c
+++ b/drivers/pinctrl/pinctrl-msm.c
@@ -200,28 +200,17 @@ static const struct pinmux_ops msm_pinmu
 static int msm_config_reg(struct msm_pinctrl *pctrl,
 			  const struct msm_pingroup *g,
 			  unsigned param,
-			  s16 *reg,
 			  unsigned *mask,
 			  unsigned *bit)
 {
 	switch (param) {
 	case PIN_CONFIG_BIAS_DISABLE:
-		*reg = g->ctl_reg;
-		*bit = g->pull_bit;
-		*mask = 3;
-		break;
 	case PIN_CONFIG_BIAS_PULL_DOWN:
-		*reg = g->ctl_reg;
-		*bit = g->pull_bit;
-		*mask = 3;
-		break;
 	case PIN_CONFIG_BIAS_PULL_UP:
-		*reg = g->ctl_reg;
 		*bit = g->pull_bit;
 		*mask = 3;
 		break;
 	case PIN_CONFIG_DRIVE_STRENGTH:
-		*reg = g->ctl_reg;
 		*bit = g->drv_bit;
 		*mask = 7;
 		break;
@@ -230,12 +219,6 @@ static int msm_config_reg(struct msm_pin
 		return -ENOTSUPP;
 	}
 
-	if (*reg < 0) {
-		dev_err(pctrl->dev, "Config param %04x not supported on group %s\n",
-			param, g->name);
-		return -ENOTSUPP;
-	}
-
 	return 0;
 }
 
@@ -273,17 +256,16 @@ static int msm_config_group_get(struct p
 	unsigned mask;
 	unsigned arg;
 	unsigned bit;
-	s16 reg;
 	int ret;
 	u32 val;
 
 	g = &pctrl->soc->groups[group];
 
-	ret = msm_config_reg(pctrl, g, param, &reg, &mask, &bit);
+	ret = msm_config_reg(pctrl, g, param, &mask, &bit);
 	if (ret < 0)
 		return ret;
 
-	val = readl(pctrl->regs + reg);
+	val = readl(pctrl->regs + g->ctl_reg);
 	arg = (val >> bit) & mask;
 
 	/* Convert register value to pinconf value */
@@ -323,7 +305,6 @@ static int msm_config_group_set(struct p
 	unsigned mask;
 	unsigned arg;
 	unsigned bit;
-	s16 reg;
 	int ret;
 	u32 val;
 	int i;
@@ -334,7 +315,7 @@ static int msm_config_group_set(struct p
 		param = pinconf_to_config_param(configs[i]);
 		arg = pinconf_to_config_argument(configs[i]);
 
-		ret = msm_config_reg(pctrl, g, param, &reg, &mask, &bit);
+		ret = msm_config_reg(pctrl, g, param, &mask, &bit);
 		if (ret < 0)
 			return ret;
 
@@ -369,10 +350,10 @@ static int msm_config_group_set(struct p
 		}
 
 		spin_lock_irqsave(&pctrl->lock, flags);
-		val = readl(pctrl->regs + reg);
+		val = readl(pctrl->regs + g->ctl_reg);
 		val &= ~(mask << bit);
 		val |= arg << bit;
-		writel(val, pctrl->regs + reg);
+		writel(val, pctrl->regs + g->ctl_reg);
 		spin_unlock_irqrestore(&pctrl->lock, flags);
 	}