1 files changed, 358 insertions, 64 deletions

diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
index b77b18fe5adc..4918d38abfc2 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
@@ -13,6 +13,7 @@
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/module.h>
+#include <linux/of_address.h>
 #include <linux/of_irq.h>
 
 #include "mtk-eint.h"
@@ -57,11 +58,16 @@ static u32 mtk_r32(struct mtk_pinctrl *pctl, u8 i, u32 reg)
 void mtk_rmw(struct mtk_pinctrl *pctl, u8 i, u32 reg, u32 mask, u32 set)
 {
 	u32 val;
+	unsigned long flags;
+
+	spin_lock_irqsave(&pctl->lock, flags);
 
 	val = mtk_r32(pctl, i, reg);
 	val &= ~mask;
 	val |= set;
 	mtk_w32(pctl, i, reg, val);
+
+	spin_unlock_irqrestore(&pctl->lock, flags);
 }
 
 static int mtk_hw_pin_field_lookup(struct mtk_pinctrl *hw,
@@ -243,6 +249,33 @@ static int mtk_xt_find_eint_num(struct mtk_pinctrl *hw, unsigned long eint_n)
 	return EINT_NA;
 }
 
+/*
+ * Virtual GPIO only used inside SOC and not being exported to outside SOC.
+ * Some modules use virtual GPIO as eint (e.g. pmif or usb).
+ * In MTK platform, external interrupt (EINT) and GPIO is 1-1 mapping
+ * and we can set GPIO as eint.
+ * But some modules use specific eint which doesn't have real GPIO pin.
+ * So we use virtual GPIO to map it.
+ */
+
+bool mtk_is_virt_gpio(struct mtk_pinctrl *hw, unsigned int gpio_n)
+{
+	const struct mtk_pin_desc *desc;
+	bool virt_gpio = false;
+
+	desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio_n];
+
+	/* if the GPIO is not supported for eint mode */
+	if (desc->eint.eint_m == NO_EINT_SUPPORT)
+		return virt_gpio;
+
+	if (desc->funcs && !desc->funcs[desc->eint.eint_m].name)
+		virt_gpio = true;
+
+	return virt_gpio;
+}
+EXPORT_SYMBOL_GPL(mtk_is_virt_gpio);
+
 static int mtk_xt_get_gpio_n(void *data, unsigned long eint_n,
 			     unsigned int *gpio_n,
 			     struct gpio_chip **gpio_chip)
@@ -253,8 +286,12 @@ static int mtk_xt_get_gpio_n(void *data, unsigned long eint_n,
 	desc = (const struct mtk_pin_desc *)hw->soc->pins;
 	*gpio_chip = &hw->chip;
 
-	/* Be greedy to guess first gpio_n is equal to eint_n */
-	if (desc[eint_n].eint.eint_n == eint_n)
+	/*
+	 * Be greedy to guess first gpio_n is equal to eint_n.
+	 * Only eint virtual eint number is greater than gpio number.
+	 */
+	if (hw->soc->npins > eint_n &&
+	    desc[eint_n].eint.eint_n == eint_n)
 		*gpio_n = eint_n;
 	else
 		*gpio_n = mtk_xt_find_eint_num(hw, eint_n);
@@ -295,6 +332,9 @@ static int mtk_xt_set_gpio_as_eint(void *data, unsigned long eint_n)
 	if (err)
 		return err;
 
+	if (mtk_is_virt_gpio(hw, gpio_n))
+		return 0;
+
 	desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio_n];
 
 	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_MODE,
@@ -328,7 +368,7 @@ static const struct mtk_eint_xt mtk_eint_xt = {
 int mtk_build_eint(struct mtk_pinctrl *hw, struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
-	struct resource *res;
+	int ret, i, j, count_reg_names;
 
 	if (!IS_ENABLED(CONFIG_EINT_MTK))
 		return 0;
@@ -340,29 +380,61 @@ int mtk_build_eint(struct mtk_pinctrl *hw, struct platform_device *pdev)
 	if (!hw->eint)
 		return -ENOMEM;
 
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "eint");
-	if (!res) {
-		dev_err(&pdev->dev, "Unable to get eint resource\n");
-		return -ENODEV;
+	count_reg_names = of_property_count_strings(np, "reg-names");
+	if (count_reg_names < 0)
+		return -EINVAL;
+
+	hw->eint->nbase = count_reg_names - (int)hw->soc->nbase_names;
+	if (hw->eint->nbase <= 0)
+		return -EINVAL;
+
+	hw->eint->base = devm_kmalloc_array(&pdev->dev, hw->eint->nbase,
+					    sizeof(*hw->eint->base), GFP_KERNEL | __GFP_ZERO);
+	if (!hw->eint->base) {
+		ret = -ENOMEM;
+		goto err_free_base;
 	}
 
-	hw->eint->base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(hw->eint->base))
-		return PTR_ERR(hw->eint->base);
+	for (i = hw->soc->nbase_names, j = 0; i < count_reg_names; i++, j++) {
+		hw->eint->base[j] = of_iomap(np, i);
+		if (IS_ERR(hw->eint->base[j])) {
+			ret = PTR_ERR(hw->eint->base[j]);
+			goto err_free_eint;
+		}
+	}
 
 	hw->eint->irq = irq_of_parse_and_map(np, 0);
-	if (!hw->eint->irq)
-		return -EINVAL;
+	if (!hw->eint->irq) {
+		ret = -EINVAL;
+		goto err_free_eint;
+	}
 
-	if (!hw->soc->eint_hw)
-		return -ENODEV;
+	if (!hw->soc->eint_hw) {
+		ret = -ENODEV;
+		goto err_free_eint;
+	}
 
 	hw->eint->dev = &pdev->dev;
 	hw->eint->hw = hw->soc->eint_hw;
 	hw->eint->pctl = hw;
 	hw->eint->gpio_xlate = &mtk_eint_xt;
 
-	return mtk_eint_do_init(hw->eint);
+	ret = mtk_eint_do_init(hw->eint, hw->soc->eint_pin);
+	if (ret)
+		goto err_free_eint;
+
+	return 0;
+
+err_free_eint:
+	for (j = 0; j < hw->eint->nbase; j++) {
+		if (hw->eint->base[j])
+			iounmap(hw->eint->base[j]);
+	}
+	devm_kfree(hw->dev, hw->eint->base);
+err_free_base:
+	devm_kfree(hw->dev, hw->eint);
+	hw->eint = NULL;
+	return ret;
 }
 EXPORT_SYMBOL_GPL(mtk_build_eint);
 
@@ -453,14 +525,8 @@ EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get);
 int mtk_pinconf_bias_disable_set_rev1(struct mtk_pinctrl *hw,
 				      const struct mtk_pin_desc *desc)
 {
-	int err;
-
-	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLEN,
-			       MTK_DISABLE);
-	if (err)
-		return err;
-
-	return 0;
+	return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PULLEN,
+				MTK_DISABLE);
 }
 EXPORT_SYMBOL_GPL(mtk_pinconf_bias_disable_set_rev1);
 
@@ -535,7 +601,7 @@ EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get_rev1);
  */
 static int mtk_pinconf_bias_set_pu_pd(struct mtk_pinctrl *hw,
 				const struct mtk_pin_desc *desc,
-				u32 pullup, u32 arg)
+				u32 pullup, u32 arg, bool pd_only)
 {
 	int err, pu, pd;
 
@@ -549,18 +615,16 @@ static int mtk_pinconf_bias_set_pu_pd(struct mtk_pinctrl *hw,
 		pu = 0;
 		pd = 1;
 	} else {
-		err = -EINVAL;
-		goto out;
+		return -EINVAL;
 	}
 
-	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PU, pu);
-	if (err)
-		goto out;
-
-	err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD, pd);
+	if (!pd_only) {
+		err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PU, pu);
+		if (err)
+			return err;
+	}
 
-out:
-	return err;
+	return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_PD, pd);
 }
 
 static int mtk_pinconf_bias_set_pullsel_pullen(struct mtk_pinctrl *hw,
@@ -627,6 +691,195 @@ out:
 	return err;
 }
 
+static int mtk_hw_pin_rsel_lookup(struct mtk_pinctrl *hw,
+				  const struct mtk_pin_desc *desc,
+				  u32 pullup, u32 arg, u32 *rsel_val)
+{
+	const struct mtk_pin_rsel *rsel;
+	int check;
+	bool found = false;
+
+	rsel = hw->soc->pin_rsel;
+
+	for (check = 0; check <= hw->soc->npin_rsel - 1; check++) {
+		if (desc->number >= rsel[check].s_pin &&
+		    desc->number <= rsel[check].e_pin) {
+			if (pullup) {
+				if (rsel[check].up_rsel == arg) {
+					found = true;
+					*rsel_val = rsel[check].rsel_index;
+					break;
+				}
+			} else {
+				if (rsel[check].down_rsel == arg) {
+					found = true;
+					*rsel_val = rsel[check].rsel_index;
+					break;
+				}
+			}
+		}
+	}
+
+	if (!found) {
+		dev_err(hw->dev, "Not support rsel value %d Ohm for pin = %d (%s)\n",
+			arg, desc->number, desc->name);
+		return -ENOTSUPP;
+	}
+
+	return 0;
+}
+
+static int mtk_pinconf_bias_set_rsel(struct mtk_pinctrl *hw,
+				     const struct mtk_pin_desc *desc,
+				     u32 pullup, u32 arg)
+{
+	int err, rsel_val;
+
+	if (hw->rsel_si_unit) {
+		/* find pin rsel_index from pin_rsel array*/
+		err = mtk_hw_pin_rsel_lookup(hw, desc, pullup, arg, &rsel_val);
+		if (err)
+			return err;
+	} else {
+		if (arg < MTK_PULL_SET_RSEL_000 || arg > MTK_PULL_SET_RSEL_111)
+			return -EINVAL;
+
+		rsel_val = arg - MTK_PULL_SET_RSEL_000;
+	}
+
+	return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_RSEL, rsel_val);
+}
+
+static int mtk_pinconf_bias_set_pu_pd_rsel(struct mtk_pinctrl *hw,
+					   const struct mtk_pin_desc *desc,
+					   u32 pullup, u32 arg)
+{
+	u32 enable = arg == MTK_DISABLE ? MTK_DISABLE : MTK_ENABLE;
+	int err;
+
+	if (arg != MTK_DISABLE) {
+		err = mtk_pinconf_bias_set_rsel(hw, desc, pullup, arg);
+		if (err)
+			return err;
+	}
+
+	return mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, enable, false);
+}
+
+int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw,
+			       const struct mtk_pin_desc *desc,
+			       u32 pullup, u32 arg)
+{
+	int err = -ENOTSUPP;
+	u32 try_all_type;
+
+	if (hw->soc->pull_type)
+		try_all_type = hw->soc->pull_type[desc->number];
+	else
+		try_all_type = MTK_PULL_TYPE_MASK;
+
+	if (try_all_type & MTK_PULL_RSEL_TYPE) {
+		err = mtk_pinconf_bias_set_pu_pd_rsel(hw, desc, pullup, arg);
+		if (!err)
+			return 0;
+	}
+
+	if (try_all_type & MTK_PULL_PD_TYPE) {
+		err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg, true);
+		if (!err)
+			return err;
+	}
+
+	if (try_all_type & MTK_PULL_PU_PD_TYPE) {
+		err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg, false);
+		if (!err)
+			return 0;
+	}
+
+	if (try_all_type & MTK_PULL_PULLSEL_TYPE) {
+		err = mtk_pinconf_bias_set_pullsel_pullen(hw, desc,
+							  pullup, arg);
+		if (!err)
+			return 0;
+	}
+
+	if (try_all_type & MTK_PULL_PUPD_R1R0_TYPE)
+		err = mtk_pinconf_bias_set_pupd_r1_r0(hw, desc, pullup, arg);
+
+	if (err)
+		dev_err(hw->dev, "Invalid pull argument\n");
+
+	return err;
+}
+EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set_combo);
+
+static int mtk_rsel_get_si_unit(struct mtk_pinctrl *hw,
+				const struct mtk_pin_desc *desc,
+				u32 pullup, u32 rsel_val, u32 *si_unit)
+{
+	const struct mtk_pin_rsel *rsel;
+	int check;
+
+	rsel = hw->soc->pin_rsel;
+
+	for (check = 0; check <= hw->soc->npin_rsel - 1; check++) {
+		if (desc->number >= rsel[check].s_pin &&
+		    desc->number <= rsel[check].e_pin) {
+			if (rsel_val == rsel[check].rsel_index) {
+				if (pullup)
+					*si_unit = rsel[check].up_rsel;
+				else
+					*si_unit = rsel[check].down_rsel;
+				break;
+			}
+		}
+	}
+
+	return 0;
+}
+
+static int mtk_pinconf_bias_get_pu_pd_rsel(struct mtk_pinctrl *hw,
+					   const struct mtk_pin_desc *desc,
+					   u32 *pullup, u32 *enable)
+{
+	int pu, pd, rsel, err;
+
+	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_RSEL, &rsel);
+	if (err)
+		goto out;
+
+	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PU, &pu);
+	if (err)
+		goto out;
+
+	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PD, &pd);
+	if (err)
+		goto out;
+
+	if (pu == 0 && pd == 0) {
+		*pullup = 0;
+		*enable = MTK_DISABLE;
+	} else if (pu == 1 && pd == 0) {
+		*pullup = 1;
+		if (hw->rsel_si_unit)
+			mtk_rsel_get_si_unit(hw, desc, *pullup, rsel, enable);
+		else
+			*enable = rsel + MTK_PULL_SET_RSEL_000;
+	} else if (pu == 0 && pd == 1) {
+		*pullup = 0;
+		if (hw->rsel_si_unit)
+			mtk_rsel_get_si_unit(hw, desc, *pullup, rsel, enable);
+		else
+			*enable = rsel + MTK_PULL_SET_RSEL_000;
+	} else {
+		err = -EINVAL;
+		goto out;
+	}
+
+out:
+	return err;
+}
+
 static int mtk_pinconf_bias_get_pu_pd(struct mtk_pinctrl *hw,
 				const struct mtk_pin_desc *desc,
 				u32 *pullup, u32 *enable)
@@ -657,6 +910,29 @@ out:
 	return err;
 }
 
+static int mtk_pinconf_bias_get_pd(struct mtk_pinctrl *hw,
+				const struct mtk_pin_desc *desc,
+				u32 *pullup, u32 *enable)
+{
+	int err, pd;
+
+	err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_PD, &pd);
+	if (err)
+		goto out;
+
+	if (pd == 0) {
+		*pullup = 0;
+		*enable = MTK_DISABLE;
+	} else if (pd == 1) {
+		*pullup = 0;
+		*enable = MTK_ENABLE;
+	} else
+		err = -EINVAL;
+
+out:
+	return err;
+}
+
 static int mtk_pinconf_bias_get_pullsel_pullen(struct mtk_pinctrl *hw,
 				const struct mtk_pin_desc *desc,
 				u32 *pullup, u32 *enable)
@@ -708,44 +984,46 @@ out:
 	return err;
 }
 
-int mtk_pinconf_bias_set_combo(struct mtk_pinctrl *hw,
-				const struct mtk_pin_desc *desc,
-				u32 pullup, u32 arg)
-{
-	int err;
-
-	err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg);
-	if (!err)
-		goto out;
-
-	err = mtk_pinconf_bias_set_pullsel_pullen(hw, desc, pullup, arg);
-	if (!err)
-		goto out;
-
-	err = mtk_pinconf_bias_set_pupd_r1_r0(hw, desc, pullup, arg);
-
-out:
-	return err;
-}
-EXPORT_SYMBOL_GPL(mtk_pinconf_bias_set_combo);
-
 int mtk_pinconf_bias_get_combo(struct mtk_pinctrl *hw,
 			      const struct mtk_pin_desc *desc,
 			      u32 *pullup, u32 *enable)
 {
-	int err;
+	int err = -ENOTSUPP;
+	u32 try_all_type;
 
-	err = mtk_pinconf_bias_get_pu_pd(hw, desc, pullup, enable);
-	if (!err)
-		goto out;
+	if (hw->soc->pull_type)
+		try_all_type = hw->soc->pull_type[desc->number];
+	else
+		try_all_type = MTK_PULL_TYPE_MASK;
 
-	err = mtk_pinconf_bias_get_pullsel_pullen(hw, desc, pullup, enable);
-	if (!err)
-		goto out;
+	if (try_all_type & MTK_PULL_RSEL_TYPE) {
+		err = mtk_pinconf_bias_get_pu_pd_rsel(hw, desc, pullup, enable);
+		if (!err)
+			return 0;
+	}
 
-	err = mtk_pinconf_bias_get_pupd_r1_r0(hw, desc, pullup, enable);
+	if (try_all_type & MTK_PULL_PD_TYPE) {
+		err = mtk_pinconf_bias_get_pd(hw, desc, pullup, enable);
+		if (!err)
+			return err;
+	}
+
+	if (try_all_type & MTK_PULL_PU_PD_TYPE) {
+		err = mtk_pinconf_bias_get_pu_pd(hw, desc, pullup, enable);
+		if (!err)
+			return 0;
+	}
+
+	if (try_all_type & MTK_PULL_PULLSEL_TYPE) {
+		err = mtk_pinconf_bias_get_pullsel_pullen(hw, desc,
+							  pullup, enable);
+		if (!err)
+			return 0;
+	}
+
+	if (try_all_type & MTK_PULL_PUPD_R1R0_TYPE)
+		err = mtk_pinconf_bias_get_pupd_r1_r0(hw, desc, pullup, enable);
 
-out:
 	return err;
 }
 EXPORT_SYMBOL_GPL(mtk_pinconf_bias_get_combo);
@@ -892,7 +1170,9 @@ int mtk_pinconf_adv_pull_set(struct mtk_pinctrl *hw,
 			if (err)
 				return err;
 		} else {
-			return -ENOTSUPP;
+			err = mtk_pinconf_bias_set_rev1(hw, desc, pullup);
+			if (err)
+				err = mtk_pinconf_bias_set(hw, desc, pullup);
 		}
 	}
 
@@ -994,6 +1274,20 @@ int mtk_pinconf_adv_drive_get(struct mtk_pinctrl *hw,
 }
 EXPORT_SYMBOL_GPL(mtk_pinconf_adv_drive_get);
 
+int mtk_pinconf_adv_drive_set_raw(struct mtk_pinctrl *hw,
+				  const struct mtk_pin_desc *desc, u32 arg)
+{
+	return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DRV_ADV, arg);
+}
+EXPORT_SYMBOL_GPL(mtk_pinconf_adv_drive_set_raw);
+
+int mtk_pinconf_adv_drive_get_raw(struct mtk_pinctrl *hw,
+				  const struct mtk_pin_desc *desc, u32 *val)
+{
+	return mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DRV_ADV, val);
+}
+EXPORT_SYMBOL_GPL(mtk_pinconf_adv_drive_get_raw);
+
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>");
 MODULE_DESCRIPTION("Pin configuration library module for mediatek SoCs");