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