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From 469f83e0ed374250be5fd6202ac535276a752fa8 Mon Sep 17 00:00:00 2001
From: Bjorn Andersson <bjorn@kryo.se>
Date: Tue, 4 Feb 2014 19:55:31 -0800
Subject: [PATCH 033/182] pinctrl-msm: Support output-{high,low} configuration
Add support for configuring pins as output with value as from the
pinconf-generic interface.
Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/pinctrl/pinctrl-msm.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
--- a/drivers/pinctrl/pinctrl-msm.c
+++ b/drivers/pinctrl/pinctrl-msm.c
@@ -214,6 +214,11 @@ static int msm_config_reg(struct msm_pin
*bit = g->drv_bit;
*mask = 7;
break;
+ case PIN_CONFIG_OUTPUT:
+ *reg = g->ctl_reg;
+ *bit = g->oe_bit;
+ *mask = 1;
+ break;
default:
dev_err(pctrl->dev, "Invalid config param %04x\n", param);
return -ENOTSUPP;
@@ -282,6 +287,14 @@ static int msm_config_group_get(struct p
case PIN_CONFIG_DRIVE_STRENGTH:
arg = msm_regval_to_drive(arg);
break;
+ case PIN_CONFIG_OUTPUT:
+ /* Pin is not output */
+ if (!arg)
+ return -EINVAL;
+
+ val = readl(pctrl->regs + g->io_reg);
+ arg = !!(val & BIT(g->in_bit));
+ break;
default:
dev_err(pctrl->dev, "Unsupported config parameter: %x\n",
param);
@@ -337,6 +350,20 @@ static int msm_config_group_set(struct p
else
arg = (arg / 2) - 1;
break;
+ case PIN_CONFIG_OUTPUT:
+ /* set output value */
+ spin_lock_irqsave(&pctrl->lock, flags);
+ val = readl(pctrl->regs + g->io_reg);
+ if (arg)
+ val |= BIT(g->out_bit);
+ else
+ val &= ~BIT(g->out_bit);
+ writel(val, pctrl->regs + g->io_reg);
+ spin_unlock_irqrestore(&pctrl->lock, flags);
+
+ /* enable output */
+ arg = 1;
+ break;
default:
dev_err(pctrl->dev, "Unsupported config parameter: %x\n",
param);
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