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);