Commit 430be10d authored Sep 08, 2016 by Vladimir Zapolskiy Committed by Linus Walleij Sep 12, 2016

pinctrl: imx: accept gpio request/free from pinctrl



While only Freescale Vybrid SoC has settings of GPIO capabilities done
by iomux controller, it is only a matter of GPIO controller driver
implementation for the rest of Freescale/NXP SoCs from iMX series.

As a practical example on GPIO request a pad function should be
switched to GPIO, but because this requires updates to all particular
iMX pinctrl drivers, for simplicity at the moment add only a proper
connection between shared pinctrl-imx and pinctrl/pinmux core, namely
.gpio_request_enable/.gpio_disable_free/.gpio_set_direction callbacks
should return success to a caller. This change allows to progress by
adding request/free callbacks into gpio-mxc.c driver.

Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

parent 5803348c

drivers/pinctrl/freescale/pinctrl-imx.c

+2 −2

Original line number	Original line	Diff line number	Diff line
	@@ -315,7 +315,7 @@ static int imx_pmx_gpio_request_enable(struct pinctrl_dev *pctldev,

	/* Currently implementation only for shared mux/conf register */		/* Currently implementation only for shared mux/conf register */
	if (!(info->flags & SHARE_MUX_CONF_REG))		if (!(info->flags & SHARE_MUX_CONF_REG))
	return -EINVAL;		return 0;

	pin_reg = &info->pin_regs[offset];		pin_reg = &info->pin_regs[offset];
	if (pin_reg->mux_reg == -1)		if (pin_reg->mux_reg == -1)
	@@ -380,7 +380,7 @@ static int imx_pmx_gpio_set_direction(struct pinctrl_dev *pctldev,
	* They are part of the shared mux/conf register.		* They are part of the shared mux/conf register.
	*/		*/
	if (!(info->flags & SHARE_MUX_CONF_REG))		if (!(info->flags & SHARE_MUX_CONF_REG))
	return -EINVAL;		return 0;

	pin_reg = &info->pin_regs[offset];		pin_reg = &info->pin_regs[offset];
	if (pin_reg->mux_reg == -1)		if (pin_reg->mux_reg == -1)