From 44b6d93043ab6775cb8e190a82ae79afd121e944 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Heiko=20St=C3=BCbner?= Date: Sun, 16 Jun 2013 17:41:16 +0200 Subject: pinctrl: rockchip: correctly handle arguments of pinconf options Change the rockchip pinctrl driver to handle the arguments to the pull pinconfig options correctly. So only accept non-0 values for the pull options as the rockchip pin-controller can only turn pulls on and off (this via BIAS_DISABLE). Signed-off-by: Heiko Stuebner Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-rockchip.c | 41 ++++++++++++++++++++++++++++++++++---- 1 file changed, 37 insertions(+), 4 deletions(-) (limited to 'drivers/pinctrl') diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index c605b63b5a6b..427564f552b4 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -563,6 +563,25 @@ static const struct pinmux_ops rockchip_pmx_ops = { * Pinconf_ops handling */ +static bool rockchip_pinconf_pull_valid(struct rockchip_pin_ctrl *ctrl, + enum pin_config_param pull) +{ + /* rk3066b does support any pulls */ + if (!ctrl->pull_offset) + return pull ? false : true; + + if (ctrl->pull_auto) { + if (pull != PIN_CONFIG_BIAS_PULL_PIN_DEFAULT && + pull != PIN_CONFIG_BIAS_DISABLE) + return false; + } else { + if (pull == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT) + return false; + } + + return true; +} + /* set the pin config settings for a specified pin */ static int rockchip_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, unsigned long config) @@ -570,12 +589,21 @@ static int rockchip_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); struct rockchip_pin_bank *bank = pin_to_bank(info, pin); enum pin_config_param param = pinconf_to_config_param(config); + u16 arg = pinconf_to_config_argument(config); switch (param) { case PIN_CONFIG_BIAS_DISABLE: + return rockchip_set_pull(bank, pin - bank->pin_base, param); + break; case PIN_CONFIG_BIAS_PULL_UP: case PIN_CONFIG_BIAS_PULL_DOWN: case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT: + if (!rockchip_pinconf_pull_valid(info->ctrl, param)) + return -ENOTSUPP; + + if (!arg) + return -EINVAL; + return rockchip_set_pull(bank, pin - bank->pin_base, param); break; default: @@ -593,19 +621,24 @@ static int rockchip_pinconf_get(struct pinctrl_dev *pctldev, unsigned int pin, struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); struct rockchip_pin_bank *bank = pin_to_bank(info, pin); enum pin_config_param param = pinconf_to_config_param(*config); - unsigned int pull; switch (param) { case PIN_CONFIG_BIAS_DISABLE: + if (rockchip_get_pull(bank, pin - bank->pin_base) != param) + return -EINVAL; + + *config = 0; + break; case PIN_CONFIG_BIAS_PULL_UP: case PIN_CONFIG_BIAS_PULL_DOWN: case PIN_CONFIG_BIAS_PULL_PIN_DEFAULT: - pull = rockchip_get_pull(bank, pin - bank->pin_base); + if (!rockchip_pinconf_pull_valid(info->ctrl, param)) + return -ENOTSUPP; - if (pull != param) + if (rockchip_get_pull(bank, pin - bank->pin_base) != param) return -EINVAL; - *config = 0; + *config = 1; break; default: return -ENOTSUPP; -- cgit v1.2.3