The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 1d0bd580ef83b78a10c0b37f3313eaa59d8c80db Mon Sep 17 00:00:00 2001

From: =?UTF-8?q?=E5=91=A8=E7=90=B0=E6=9D=B0=20=28Zhou=20Yanjie=29?= zhouyanjie@wanyeetech.com Date: Sun, 18 Apr 2021 22:44:23 +0800 Subject: [PATCH] pinctrl: Ingenic: Add support for read the pin configuration of X1830. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit

Add X1830 support in "ingenic_pinconf_get()", so that it can read the configuration of X1830 SoC correctly.

Fixes: d7da2a1e4e08 ("pinctrl: Ingenic: Add pinctrl driver for X1830.") Cc: stable@vger.kernel.org Signed-off-by: 周琰杰 (Zhou Yanjie) zhouyanjie@wanyeetech.com Reviewed-by: Andy Shevchenko andy.shevchenko@gmail.com Reviewed-by: Paul Cercueil paul@crapouillou.net Link: https://lore.kernel.org/r/1618757073-1724-3-git-send-email-zhouyanjie@wanyee... Signed-off-by: Linus Walleij linus.walleij@linaro.org

diff --git a/drivers/pinctrl/pinctrl-ingenic.c b/drivers/pinctrl/pinctrl-ingenic.c index f15ef814b75a..02729da8abd6 100644 --- a/drivers/pinctrl/pinctrl-ingenic.c +++ b/drivers/pinctrl/pinctrl-ingenic.c @@ -2109,26 +2109,48 @@ static int ingenic_pinconf_get(struct pinctrl_dev *pctldev, enum pin_config_param param = pinconf_to_config_param(*config); unsigned int idx = pin % PINS_PER_GPIO_CHIP; unsigned int offt = pin / PINS_PER_GPIO_CHIP; - bool pull; + unsigned int bias; + bool pull, pullup, pulldown;

- if (jzpc->info->version >= ID_JZ4770) - pull = !ingenic_get_pin_config(jzpc, pin, JZ4770_GPIO_PEN); - else - pull = !ingenic_get_pin_config(jzpc, pin, JZ4740_GPIO_PULL_DIS); + if (jzpc->info->version >= ID_X1830) { + unsigned int half = PINS_PER_GPIO_CHIP / 2; + unsigned int idxh = (pin % half) * 2; + + if (idx < half) + regmap_read(jzpc->map, offt * jzpc->info->reg_offset + + X1830_GPIO_PEL, &bias); + else + regmap_read(jzpc->map, offt * jzpc->info->reg_offset + + X1830_GPIO_PEH, &bias); + + bias = (bias >> idxh) & (GPIO_PULL_UP | GPIO_PULL_DOWN); + + pullup = (bias == GPIO_PULL_UP) && (jzpc->info->pull_ups[offt] & BIT(idx)); + pulldown = (bias == GPIO_PULL_DOWN) && (jzpc->info->pull_downs[offt] & BIT(idx)); + + } else { + if (jzpc->info->version >= ID_JZ4770) + pull = !ingenic_get_pin_config(jzpc, pin, JZ4770_GPIO_PEN); + else + pull = !ingenic_get_pin_config(jzpc, pin, JZ4740_GPIO_PULL_DIS); + + pullup = pull && (jzpc->info->pull_ups[offt] & BIT(idx)); + pulldown = pull && (jzpc->info->pull_downs[offt] & BIT(idx)); + }

switch (param) { case PIN_CONFIG_BIAS_DISABLE: - if (pull) + if (pullup || pulldown) return -EINVAL; break;

case PIN_CONFIG_BIAS_PULL_UP: - if (!pull || !(jzpc->info->pull_ups[offt] & BIT(idx))) + if (!pullup) return -EINVAL; break;

case PIN_CONFIG_BIAS_PULL_DOWN: - if (!pull || !(jzpc->info->pull_downs[offt] & BIT(idx))) + if (!pulldown) return -EINVAL; break;

@@ -2146,7 +2168,7 @@ static void ingenic_set_bias(struct ingenic_pinctrl *jzpc, if (jzpc->info->version >= ID_X1830) { unsigned int idx = pin % PINS_PER_GPIO_CHIP; unsigned int half = PINS_PER_GPIO_CHIP / 2; - unsigned int idxh = pin % half * 2; + unsigned int idxh = (pin % half) * 2; unsigned int offt = pin / PINS_PER_GPIO_CHIP;

if (idx < half) {