Backport new features for MediaTek pinctrl/pinconf drivers from upstream.
This will serve as the base to improve pinconf bias/pull-up/pull-down on
MT7981 and MT7986, and also prepare for upcoming support for MT7988.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
--- /dev/null
+From 26564c44357e19d03c124550bbd0b5851e6638c2 Mon Sep 17 00:00:00 2001
+From: Zhiyong Tao <zhiyong.tao@mediatek.com>
+Date: Fri, 24 Sep 2021 16:06:28 +0800
+Subject: [PATCH] dt-bindings: pinctrl: mt8195: add rsel define
+
+This patch adds rsel define for mt8195.
+
+Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
+Acked-by: Rob Herring <robh@kernel.org>
+Link: https://lore.kernel.org/r/20210924080632.28410-2-zhiyong.tao@mediatek.com
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ include/dt-bindings/pinctrl/mt65xx.h | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+--- a/include/dt-bindings/pinctrl/mt65xx.h
++++ b/include/dt-bindings/pinctrl/mt65xx.h
+@@ -16,6 +16,15 @@
+ #define MTK_PUPD_SET_R1R0_10 102
+ #define MTK_PUPD_SET_R1R0_11 103
+
++#define MTK_PULL_SET_RSEL_000 200
++#define MTK_PULL_SET_RSEL_001 201
++#define MTK_PULL_SET_RSEL_010 202
++#define MTK_PULL_SET_RSEL_011 203
++#define MTK_PULL_SET_RSEL_100 204
++#define MTK_PULL_SET_RSEL_101 205
++#define MTK_PULL_SET_RSEL_110 206
++#define MTK_PULL_SET_RSEL_111 207
++
+ #define MTK_DRIVE_2mA 2
+ #define MTK_DRIVE_4mA 4
+ #define MTK_DRIVE_6mA 6
--- /dev/null
+From d8b94c9ff96c2024a527086d850eb0b314337ff9 Mon Sep 17 00:00:00 2001
+From: Sam Shih <sam.shih@mediatek.com>
+Date: Tue, 14 Sep 2021 16:51:32 +0800
+Subject: [PATCH] pinctrl: mediatek: moore: check if pin_desc is valid before
+ use
+
+Certain SoC are missing the middle part gpios in consecutive pins,
+it's better to check if mtk_pin_desc is a valid pin for the extensibility
+
+Signed-off-by: Sam Shih <sam.shih@mediatek.com>
+Acked-by: Sean Wang <sean.wang@mediatek.com>
+Link: https://lore.kernel.org/r/20210914085137.31761-5-sam.shih@mediatek.com
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ drivers/pinctrl/mediatek/pinctrl-moore.c | 18 ++++++++++++++++++
+ 1 file changed, 18 insertions(+)
+
+--- a/drivers/pinctrl/mediatek/pinctrl-moore.c
++++ b/drivers/pinctrl/mediatek/pinctrl-moore.c
+@@ -60,6 +60,8 @@ static int mtk_pinmux_set_mux(struct pin
+ int pin = grp->pins[i];
+
+ desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];
++ if (!desc->name)
++ return -ENOTSUPP;
+
+ mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_MODE,
+ pin_modes[i]);
+@@ -76,6 +78,8 @@ static int mtk_pinmux_gpio_request_enabl
+ const struct mtk_pin_desc *desc;
+
+ desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];
++ if (!desc->name)
++ return -ENOTSUPP;
+
+ return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_MODE,
+ hw->soc->gpio_m);
+@@ -89,6 +93,8 @@ static int mtk_pinmux_gpio_set_direction
+ const struct mtk_pin_desc *desc;
+
+ desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];
++ if (!desc->name)
++ return -ENOTSUPP;
+
+ /* hardware would take 0 as input direction */
+ return mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DIR, !input);
+@@ -103,6 +109,8 @@ static int mtk_pinconf_get(struct pinctr
+ const struct mtk_pin_desc *desc;
+
+ desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];
++ if (!desc->name)
++ return -ENOTSUPP;
+
+ switch (param) {
+ case PIN_CONFIG_BIAS_DISABLE:
+@@ -218,6 +226,8 @@ static int mtk_pinconf_set(struct pinctr
+ int cfg, err = 0;
+
+ desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];
++ if (!desc->name)
++ return -ENOTSUPP;
+
+ for (cfg = 0; cfg < num_configs; cfg++) {
+ param = pinconf_to_config_param(configs[cfg]);
+@@ -435,6 +445,8 @@ static int mtk_gpio_get(struct gpio_chip
+ int value, err;
+
+ desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio];
++ if (!desc->name)
++ return -ENOTSUPP;
+
+ err = mtk_hw_get_value(hw, desc, PINCTRL_PIN_REG_DI, &value);
+ if (err)
+@@ -449,6 +461,10 @@ static void mtk_gpio_set(struct gpio_chi
+ const struct mtk_pin_desc *desc;
+
+ desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio];
++ if (!desc->name) {
++ dev_err(hw->dev, "Failed to set gpio %d\n", gpio);
++ return;
++ }
+
+ mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_DO, !!value);
+ }
+@@ -490,6 +506,8 @@ static int mtk_gpio_set_config(struct gp
+ u32 debounce;
+
+ desc = (const struct mtk_pin_desc *)&hw->soc->pins[offset];
++ if (!desc->name)
++ return -ENOTSUPP;
+
+ if (!hw->eint ||
+ pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE ||
--- /dev/null
+From fb34a9ae383ae26326d4889fd2513e49f1019b88 Mon Sep 17 00:00:00 2001
+From: Zhiyong Tao <zhiyong.tao@mediatek.com>
+Date: Fri, 24 Sep 2021 16:06:31 +0800
+Subject: [PATCH] pinctrl: mediatek: support rsel feature
+
+This patch supports rsel(resistance selection) feature for I2C pins.
+It provides more resistance selection solution in different ICs.
+It provides rsel define and si unit solution by identifying
+"mediatek,rsel_resistance_in_si_unit" property in pio dtsi node.
+
+Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
+Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
+Link: https://lore.kernel.org/r/20210924080632.28410-5-zhiyong.tao@mediatek.com
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ .../pinctrl/mediatek/pinctrl-mtk-common-v2.c | 231 +++++++++++++++---
+ .../pinctrl/mediatek/pinctrl-mtk-common-v2.h | 46 ++++
+ drivers/pinctrl/mediatek/pinctrl-paris.c | 60 +++--
+ 3 files changed, 289 insertions(+), 48 deletions(-)
+
+--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
+@@ -665,6 +665,181 @@ 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)
++ goto out;
++ } else {
++ if (arg < MTK_PULL_SET_RSEL_000 ||
++ arg > MTK_PULL_SET_RSEL_111) {
++ err = -EINVAL;
++ goto out;
++ }
++
++ rsel_val = arg - MTK_PULL_SET_RSEL_000;
++ }
++
++ err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_RSEL, rsel_val);
++ if (err)
++ goto out;
++
++ err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, MTK_ENABLE);
++
++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 = -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_rsel(hw, desc, pullup, arg);
++ if (!err)
++ return err;
++ }
++
++ if (try_all_type & MTK_PULL_PU_PD_TYPE) {
++ err = mtk_pinconf_bias_set_pu_pd(hw, desc, pullup, arg);
++ if (!err)
++ return err;
++ }
++
++ if (try_all_type & MTK_PULL_PULLSEL_TYPE) {
++ err = mtk_pinconf_bias_set_pullsel_pullen(hw, desc,
++ pullup, arg);
++ if (!err)
++ return err;
++ }
++
++ 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_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 (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)
+@@ -746,44 +921,40 @@ 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_rsel(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 err;
++ }
++
++ if (try_all_type & MTK_PULL_PULLSEL_TYPE) {
++ err = mtk_pinconf_bias_get_pullsel_pullen(hw, desc,
++ pullup, enable);
++ if (!err)
++ return err;
++ }
+
+- err = mtk_pinconf_bias_get_pupd_r1_r0(hw, desc, pullup, enable);
++ 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);
+--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h
++++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h
+@@ -17,6 +17,22 @@
+ #define MTK_ENABLE 1
+ #define MTK_PULLDOWN 0
+ #define MTK_PULLUP 1
++#define MTK_PULL_PU_PD_TYPE BIT(0)
++#define MTK_PULL_PULLSEL_TYPE BIT(1)
++#define MTK_PULL_PUPD_R1R0_TYPE BIT(2)
++/* MTK_PULL_RSEL_TYPE can select resistance and can be
++ * turned on/off itself. But it can't be selected pull up/down
++ */
++#define MTK_PULL_RSEL_TYPE BIT(3)
++/* MTK_PULL_PU_PD_RSEL_TYPE is a type which is controlled by
++ * MTK_PULL_PU_PD_TYPE and MTK_PULL_RSEL_TYPE.
++ */
++#define MTK_PULL_PU_PD_RSEL_TYPE (MTK_PULL_PU_PD_TYPE \
++ | MTK_PULL_RSEL_TYPE)
++#define MTK_PULL_TYPE_MASK (MTK_PULL_PU_PD_TYPE |\
++ MTK_PULL_PULLSEL_TYPE |\
++ MTK_PULL_PUPD_R1R0_TYPE |\
++ MTK_PULL_RSEL_TYPE)
+
+ #define EINT_NA U16_MAX
+ #define NO_EINT_SUPPORT EINT_NA
+@@ -42,6 +58,14 @@
+ PIN_FIELD_CALC(_s_pin, _e_pin, 0, _s_addr, _x_addrs, _s_bit, \
+ _x_bits, 32, 1)
+
++#define PIN_RSEL(_s_pin, _e_pin, _rsel_index, _up_resl, _down_rsel) { \
++ .s_pin = _s_pin, \
++ .e_pin = _e_pin, \
++ .rsel_index = _rsel_index, \
++ .up_rsel = _up_resl, \
++ .down_rsel = _down_rsel, \
++ }
++
+ /* List these attributes which could be modified for the pin */
+ enum {
+ PINCTRL_PIN_REG_MODE,
+@@ -67,6 +91,7 @@ enum {
+ PINCTRL_PIN_REG_DRV_E0,
+ PINCTRL_PIN_REG_DRV_E1,
+ PINCTRL_PIN_REG_DRV_ADV,
++ PINCTRL_PIN_REG_RSEL,
+ PINCTRL_PIN_REG_MAX,
+ };
+
+@@ -129,6 +154,22 @@ struct mtk_pin_field_calc {
+ u8 fixed;
+ };
+
++/**
++ * struct mtk_pin_rsel - the structure that provides bias resistance selection.
++ * @s_pin: the start pin within the rsel range
++ * @e_pin: the end pin within the rsel range
++ * @rsel_index: the rsel bias resistance index
++ * @up_rsel: the pullup rsel bias resistance value
++ * @down_rsel: the pulldown rsel bias resistance value
++ */
++struct mtk_pin_rsel {
++ u16 s_pin;
++ u16 e_pin;
++ u16 rsel_index;
++ u32 up_rsel;
++ u32 down_rsel;
++};
++
+ /* struct mtk_pin_reg_calc - the structure that holds all ranges used to
+ * determine which register the pin would make use of
+ * for certain pin attribute.
+@@ -206,6 +247,9 @@ struct mtk_pin_soc {
+ bool ies_present;
+ const char * const *base_names;
+ unsigned int nbase_names;
++ const unsigned int *pull_type;
++ const struct mtk_pin_rsel *pin_rsel;
++ unsigned int npin_rsel;
+
+ /* Specific pinconfig operations */
+ int (*bias_disable_set)(struct mtk_pinctrl *hw,
+@@ -254,6 +298,8 @@ struct mtk_pinctrl {
+ const char **grp_names;
+ /* lock pin's register resource to avoid multiple threads issue*/
+ spinlock_t lock;
++ /* identify rsel setting by si unit or rsel define in dts node */
++ bool rsel_si_unit;
+ };
+
+ void mtk_rmw(struct mtk_pinctrl *pctl, u8 i, u32 reg, u32 mask, u32 set);
+--- a/drivers/pinctrl/mediatek/pinctrl-paris.c
++++ b/drivers/pinctrl/mediatek/pinctrl-paris.c
+@@ -574,8 +574,9 @@ static int mtk_hw_get_value_wrap(struct
+ ssize_t mtk_pctrl_show_one_pin(struct mtk_pinctrl *hw,
+ unsigned int gpio, char *buf, unsigned int buf_len)
+ {
+- int pinmux, pullup = 0, pullen = 0, len = 0, r1 = -1, r0 = -1;
++ int pinmux, pullup = 0, pullen = 0, len = 0, r1 = -1, r0 = -1, rsel = -1;
+ const struct mtk_pin_desc *desc;
++ u32 try_all_type;
+
+ if (gpio >= hw->soc->npins)
+ return -EINVAL;
+@@ -589,24 +590,39 @@ ssize_t mtk_pctrl_show_one_pin(struct mt
+ pinmux -= hw->soc->nfuncs;
+
+ mtk_pinconf_bias_get_combo(hw, desc, &pullup, &pullen);
+- if (pullen == MTK_PUPD_SET_R1R0_00) {
+- pullen = 0;
+- r1 = 0;
+- r0 = 0;
+- } else if (pullen == MTK_PUPD_SET_R1R0_01) {
+- pullen = 1;
+- r1 = 0;
+- r0 = 1;
+- } else if (pullen == MTK_PUPD_SET_R1R0_10) {
+- pullen = 1;
+- r1 = 1;
+- r0 = 0;
+- } else if (pullen == MTK_PUPD_SET_R1R0_11) {
++
++ if (hw->soc->pull_type)
++ try_all_type = hw->soc->pull_type[desc->number];
++
++ if (hw->rsel_si_unit && (try_all_type & MTK_PULL_RSEL_TYPE)) {
++ rsel = pullen;
+ pullen = 1;
+- r1 = 1;
+- r0 = 1;
+- } else if (pullen != MTK_DISABLE && pullen != MTK_ENABLE) {
+- pullen = 0;
++ } else {
++ /* Case for: R1R0 */
++ if (pullen == MTK_PUPD_SET_R1R0_00) {
++ pullen = 0;
++ r1 = 0;
++ r0 = 0;
++ } else if (pullen == MTK_PUPD_SET_R1R0_01) {
++ pullen = 1;
++ r1 = 0;
++ r0 = 1;
++ } else if (pullen == MTK_PUPD_SET_R1R0_10) {
++ pullen = 1;
++ r1 = 1;
++ r0 = 0;
++ } else if (pullen == MTK_PUPD_SET_R1R0_11) {
++ pullen = 1;
++ r1 = 1;
++ r0 = 1;
++ }
++
++ /* Case for: RSEL */
++ if (pullen >= MTK_PULL_SET_RSEL_000 &&
++ pullen <= MTK_PULL_SET_RSEL_111) {
++ rsel = pullen - MTK_PULL_SET_RSEL_000;
++ pullen = 1;
++ }
+ }
+ len += scnprintf(buf + len, buf_len - len,
+ "%03d: %1d%1d%1d%1d%02d%1d%1d%1d%1d",
+@@ -624,6 +640,8 @@ ssize_t mtk_pctrl_show_one_pin(struct mt
+ if (r1 != -1) {
+ len += scnprintf(buf + len, buf_len - len, " (%1d %1d)\n",
+ r1, r0);
++ } else if (rsel != -1) {
++ len += scnprintf(buf + len, buf_len - len, " (%1d)\n", rsel);
+ } else {
+ len += scnprintf(buf + len, buf_len - len, "\n");
+ }
+@@ -966,6 +984,12 @@ int mtk_paris_pinctrl_probe(struct platf
+
+ hw->nbase = hw->soc->nbase_names;
+
++ if (of_find_property(hw->dev->of_node,
++ "mediatek,rsel_resistance_in_si_unit", NULL))
++ hw->rsel_si_unit = true;
++ else
++ hw->rsel_si_unit = false;
++
+ spin_lock_init(&hw->lock);
+
+ err = mtk_pctrl_build_state(pdev);
--- /dev/null
+From 9f9d17c228c89e38ed612500126daf626270be9a Mon Sep 17 00:00:00 2001
+From: Dan Carpenter <dan.carpenter@oracle.com>
+Date: Sat, 27 Nov 2021 17:08:36 +0300
+Subject: [PATCH] pinctrl: mediatek: add a check for error in
+ mtk_pinconf_bias_get_rsel()
+
+All the other mtk_hw_get_value() calls have a check for "if (err)" so
+we can add one here as well. This silences a Smatch warning:
+
+ drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c:819 mtk_pinconf_bias_get_rsel()
+ error: uninitialized symbol 'pd'.
+
+Fixes: fb34a9ae383a ("pinctrl: mediatek: support rsel feature")
+Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
+Link: https://lore.kernel.org/r/20211127140836.GB24002@kili
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
+@@ -815,6 +815,8 @@ static int mtk_pinconf_bias_get_rsel(str
+ 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;
--- /dev/null
+From e1ff91f9d2303cd4e706cc908bfca21cd17b9927 Mon Sep 17 00:00:00 2001
+From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+Date: Fri, 11 Nov 2022 10:41:06 +0100
+Subject: [PATCH] pinctrl: mediatek: Fix EINT pins input debounce time
+ configuration
+
+The External Interrupt Controller (EINTC) on all of the supported
+MediaTek SoCs does support input debouncing, but not all of them
+index the debounce time values (DBNC_SETTING registers) the same way.
+
+Before this change, in some cases, as an example, requesting a debounce
+time of 16 milliseconds would mistakenly set the relative DBNC_SETTING
+register to 0x2, resulting in a way shorter debounce time of 500uS.
+
+To fix the aforementioned issue, define three different debounce_time
+arrays, reflecting the correct register index for each value and for
+each register index variant, and make sure that each SoC pinctrl
+driver uses the right one.
+
+Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+Link: https://lore.kernel.org/r/20221111094106.18486-1-angelogioacchino.delregno@collabora.com
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ drivers/pinctrl/mediatek/mtk-eint.c | 31 +++++++++++++++++++----
+ drivers/pinctrl/mediatek/mtk-eint.h | 6 +++++
+ drivers/pinctrl/mediatek/pinctrl-mt2701.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt2712.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt6765.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt6779.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt7622.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt7623.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt7629.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt8127.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt8135.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt8167.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt8173.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt8183.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt8192.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt8195.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt8365.c | 1 +
+ drivers/pinctrl/mediatek/pinctrl-mt8516.c | 1 +
+ 22 files changed, 53 insertions(+), 5 deletions(-)
+
+--- a/drivers/pinctrl/mediatek/mtk-eint.c
++++ b/drivers/pinctrl/mediatek/mtk-eint.c
+@@ -24,6 +24,7 @@
+ #define MTK_EINT_EDGE_SENSITIVE 0
+ #define MTK_EINT_LEVEL_SENSITIVE 1
+ #define MTK_EINT_DBNC_SET_DBNC_BITS 4
++#define MTK_EINT_DBNC_MAX 16
+ #define MTK_EINT_DBNC_RST_BIT (0x1 << 1)
+ #define MTK_EINT_DBNC_SET_EN (0x1 << 0)
+
+@@ -48,6 +49,18 @@ static const struct mtk_eint_regs mtk_ge
+ .dbnc_clr = 0x700,
+ };
+
++const unsigned int debounce_time_mt2701[] = {
++ 500, 1000, 16000, 32000, 64000, 128000, 256000, 0
++};
++
++const unsigned int debounce_time_mt6765[] = {
++ 125, 250, 500, 1000, 16000, 32000, 64000, 128000, 256000, 512000, 0
++};
++
++const unsigned int debounce_time_mt6795[] = {
++ 500, 1000, 16000, 32000, 64000, 128000, 256000, 512000, 0
++};
++
+ static void __iomem *mtk_eint_get_offset(struct mtk_eint *eint,
+ unsigned int eint_num,
+ unsigned int offset)
+@@ -407,10 +420,11 @@ int mtk_eint_set_debounce(struct mtk_ein
+ int virq, eint_offset;
+ unsigned int set_offset, bit, clr_bit, clr_offset, rst, i, unmask,
+ dbnc;
+- static const unsigned int debounce_time[] = {500, 1000, 16000, 32000,
+- 64000, 128000, 256000};
+ struct irq_data *d;
+
++ if (!eint->hw->db_time)
++ return -EOPNOTSUPP;
++
+ virq = irq_find_mapping(eint->domain, eint_num);
+ eint_offset = (eint_num % 4) * 8;
+ d = irq_get_irq_data(virq);
+@@ -421,9 +435,9 @@ int mtk_eint_set_debounce(struct mtk_ein
+ if (!mtk_eint_can_en_debounce(eint, eint_num))
+ return -EINVAL;
+
+- dbnc = ARRAY_SIZE(debounce_time);
+- for (i = 0; i < ARRAY_SIZE(debounce_time); i++) {
+- if (debounce <= debounce_time[i]) {
++ dbnc = eint->num_db_time;
++ for (i = 0; i < eint->num_db_time; i++) {
++ if (debounce <= eint->hw->db_time[i]) {
+ dbnc = i;
+ break;
+ }
+@@ -497,6 +511,13 @@ int mtk_eint_do_init(struct mtk_eint *ei
+ if (!eint->domain)
+ return -ENOMEM;
+
++ if (eint->hw->db_time) {
++ for (i = 0; i < MTK_EINT_DBNC_MAX; i++)
++ if (eint->hw->db_time[i] == 0)
++ break;
++ eint->num_db_time = i;
++ }
++
+ mtk_eint_hw_init(eint);
+ for (i = 0; i < eint->hw->ap_num; i++) {
+ int virq = irq_create_mapping(eint->domain, i);
+--- a/drivers/pinctrl/mediatek/mtk-eint.h
++++ b/drivers/pinctrl/mediatek/mtk-eint.h
+@@ -37,8 +37,13 @@ struct mtk_eint_hw {
+ u8 ports;
+ unsigned int ap_num;
+ unsigned int db_cnt;
++ const unsigned int *db_time;
+ };
+
++extern const unsigned int debounce_time_mt2701[];
++extern const unsigned int debounce_time_mt6765[];
++extern const unsigned int debounce_time_mt6795[];
++
+ struct mtk_eint;
+
+ struct mtk_eint_xt {
+@@ -62,6 +67,7 @@ struct mtk_eint {
+ /* Used to fit into various EINT device */
+ const struct mtk_eint_hw *hw;
+ const struct mtk_eint_regs *regs;
++ u16 num_db_time;
+
+ /* Used to fit into various pinctrl device */
+ void *pctl;
+--- a/drivers/pinctrl/mediatek/pinctrl-mt2701.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt2701.c
+@@ -531,6 +531,7 @@ static const struct mtk_pinctrl_devdata
+ .ports = 6,
+ .ap_num = 169,
+ .db_cnt = 16,
++ .db_time = debounce_time_mt2701,
+ },
+ };
+
+--- a/drivers/pinctrl/mediatek/pinctrl-mt2712.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt2712.c
+@@ -584,6 +584,7 @@ static const struct mtk_pinctrl_devdata
+ .ports = 8,
+ .ap_num = 229,
+ .db_cnt = 40,
++ .db_time = debounce_time_mt2701,
+ },
+ };
+
+--- a/drivers/pinctrl/mediatek/pinctrl-mt6765.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt6765.c
+@@ -1062,6 +1062,7 @@ static const struct mtk_eint_hw mt6765_e
+ .ports = 6,
+ .ap_num = 160,
+ .db_cnt = 13,
++ .db_time = debounce_time_mt6765,
+ };
+
+ static const struct mtk_pin_soc mt6765_data = {
+--- a/drivers/pinctrl/mediatek/pinctrl-mt6779.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt6779.c
+@@ -737,6 +737,7 @@ static const struct mtk_eint_hw mt6779_e
+ .ports = 6,
+ .ap_num = 195,
+ .db_cnt = 13,
++ .db_time = debounce_time_mt2701,
+ };
+
+ static const struct mtk_pin_soc mt6779_data = {
+--- a/drivers/pinctrl/mediatek/pinctrl-mt7622.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt7622.c
+@@ -846,6 +846,7 @@ static const struct mtk_eint_hw mt7622_e
+ .ports = 7,
+ .ap_num = ARRAY_SIZE(mt7622_pins),
+ .db_cnt = 20,
++ .db_time = debounce_time_mt6765,
+ };
+
+ static const struct mtk_pin_soc mt7622_data = {
+--- a/drivers/pinctrl/mediatek/pinctrl-mt7623.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt7623.c
+@@ -1369,6 +1369,7 @@ static const struct mtk_eint_hw mt7623_e
+ .ports = 6,
+ .ap_num = 169,
+ .db_cnt = 20,
++ .db_time = debounce_time_mt2701,
+ };
+
+ static struct mtk_pin_soc mt7623_data = {
+--- a/drivers/pinctrl/mediatek/pinctrl-mt7629.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt7629.c
+@@ -402,6 +402,7 @@ static const struct mtk_eint_hw mt7629_e
+ .ports = 7,
+ .ap_num = ARRAY_SIZE(mt7629_pins),
+ .db_cnt = 16,
++ .db_time = debounce_time_mt2701,
+ };
+
+ static struct mtk_pin_soc mt7629_data = {
+--- a/drivers/pinctrl/mediatek/pinctrl-mt8127.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt8127.c
+@@ -300,6 +300,7 @@ static const struct mtk_pinctrl_devdata
+ .ports = 6,
+ .ap_num = 143,
+ .db_cnt = 16,
++ .db_time = debounce_time_mt2701,
+ },
+ };
+
+--- a/drivers/pinctrl/mediatek/pinctrl-mt8135.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt8135.c
+@@ -313,6 +313,7 @@ static const struct mtk_pinctrl_devdata
+ .ports = 6,
+ .ap_num = 192,
+ .db_cnt = 16,
++ .db_time = debounce_time_mt2701,
+ },
+ };
+
+--- a/drivers/pinctrl/mediatek/pinctrl-mt8167.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt8167.c
+@@ -332,6 +332,7 @@ static const struct mtk_pinctrl_devdata
+ .ports = 6,
+ .ap_num = 169,
+ .db_cnt = 64,
++ .db_time = debounce_time_mt6795,
+ },
+ };
+
+--- a/drivers/pinctrl/mediatek/pinctrl-mt8173.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt8173.c
+@@ -340,6 +340,7 @@ static const struct mtk_pinctrl_devdata
+ .ports = 6,
+ .ap_num = 224,
+ .db_cnt = 16,
++ .db_time = debounce_time_mt2701,
+ },
+ };
+
+--- a/drivers/pinctrl/mediatek/pinctrl-mt8183.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt8183.c
+@@ -545,6 +545,7 @@ static const struct mtk_eint_hw mt8183_e
+ .ports = 6,
+ .ap_num = 212,
+ .db_cnt = 13,
++ .db_time = debounce_time_mt6765,
+ };
+
+ static const struct mtk_pin_soc mt8183_data = {
+--- a/drivers/pinctrl/mediatek/pinctrl-mt8192.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt8192.c
+@@ -1339,6 +1339,7 @@ static const struct mtk_eint_hw mt8192_e
+ .ports = 7,
+ .ap_num = 224,
+ .db_cnt = 32,
++ .db_time = debounce_time_mt6765,
+ };
+
+ static const struct mtk_pin_reg_calc mt8192_reg_cals[PINCTRL_PIN_REG_MAX] = {
+--- a/drivers/pinctrl/mediatek/pinctrl-mt8195.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt8195.c
+@@ -805,6 +805,7 @@ static const struct mtk_eint_hw mt8195_e
+ .ports = 7,
+ .ap_num = 225,
+ .db_cnt = 32,
++ .db_time = debounce_time_mt6765,
+ };
+
+ static const struct mtk_pin_soc mt8195_data = {
+--- a/drivers/pinctrl/mediatek/pinctrl-mt8365.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt8365.c
+@@ -466,6 +466,7 @@ static const struct mtk_pinctrl_devdata
+ .ports = 5,
+ .ap_num = 160,
+ .db_cnt = 160,
++ .db_time = debounce_time_mt6765,
+ },
+ };
+
+--- a/drivers/pinctrl/mediatek/pinctrl-mt8516.c
++++ b/drivers/pinctrl/mediatek/pinctrl-mt8516.c
+@@ -332,6 +332,7 @@ static const struct mtk_pinctrl_devdata
+ .ports = 6,
+ .ap_num = 169,
+ .db_cnt = 64,
++ .db_time = debounce_time_mt6795,
+ },
+ };
+
--- /dev/null
+From 2e35b25dd8e666b8619355fc3defb1b246a5dc02 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <linus.walleij@linaro.org>
+Date: Tue, 15 Nov 2022 09:11:07 +0100
+Subject: [PATCH] pinctrl: mediatek: Export debounce time tables
+
+The kernel test robot complains that in certain combinations
+when building the Mediatek drivers as modules we lack some
+debounce table symbols, so export them.
+
+Reported-by: kernel test robot <lkp@intel.com>
+Fixes: e1ff91f9d230 ("pinctrl: mediatek: Fix EINT pins input debounce time configuration")
+Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ drivers/pinctrl/mediatek/mtk-eint.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/pinctrl/mediatek/mtk-eint.c
++++ b/drivers/pinctrl/mediatek/mtk-eint.c
+@@ -52,14 +52,17 @@ static const struct mtk_eint_regs mtk_ge
+ const unsigned int debounce_time_mt2701[] = {
+ 500, 1000, 16000, 32000, 64000, 128000, 256000, 0
+ };
++EXPORT_SYMBOL_GPL(debounce_time_mt2701);
+
+ const unsigned int debounce_time_mt6765[] = {
+ 125, 250, 500, 1000, 16000, 32000, 64000, 128000, 256000, 512000, 0
+ };
++EXPORT_SYMBOL_GPL(debounce_time_mt6765);
+
+ const unsigned int debounce_time_mt6795[] = {
+ 500, 1000, 16000, 32000, 64000, 128000, 256000, 512000, 0
+ };
++EXPORT_SYMBOL_GPL(debounce_time_mt6795);
+
+ static void __iomem *mtk_eint_get_offset(struct mtk_eint *eint,
+ unsigned int eint_num,
--- /dev/null
+From fae82621ac33e2a4a96220c56e90d1ec6237d394 Mon Sep 17 00:00:00 2001
+From: Sam Shih <sam.shih@mediatek.com>
+Date: Sun, 6 Nov 2022 09:01:12 +0100
+Subject: [PATCH] pinctrl: mediatek: extend pinctrl-moore to support new bias
+ functions
+
+Commit fb34a9ae383a ("pinctrl: mediatek: support rsel feature")
+introduced SoC specify 'pull_type' attribute to mtk_pinconf_bias_set_combo
+and mtk_pinconf_bias_get_combo, and make the functions able to support
+almost all Mediatek SoCs that use pinctrl-mtk-common-v2.c.
+
+This patch enables pinctrl_moore to support these functions.
+
+Signed-off-by: Sam Shih <sam.shih@mediatek.com>
+Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
+Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+Link: https://lore.kernel.org/r/20221106080114.7426-6-linux@fw-web.de
+Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
+---
+ drivers/pinctrl/mediatek/pinctrl-moore.c | 49 ++++++++++++++++++++----
+ 1 file changed, 42 insertions(+), 7 deletions(-)
+
+--- a/drivers/pinctrl/mediatek/pinctrl-moore.c
++++ b/drivers/pinctrl/mediatek/pinctrl-moore.c
+@@ -8,6 +8,7 @@
+ *
+ */
+
++#include <dt-bindings/pinctrl/mt65xx.h>
+ #include <linux/gpio/driver.h>
+ #include "pinctrl-moore.h"
+
+@@ -105,7 +106,7 @@ static int mtk_pinconf_get(struct pinctr
+ {
+ struct mtk_pinctrl *hw = pinctrl_dev_get_drvdata(pctldev);
+ u32 param = pinconf_to_config_param(*config);
+- int val, val2, err, reg, ret = 1;
++ int val, val2, err, pullup, reg, ret = 1;
+ const struct mtk_pin_desc *desc;
+
+ desc = (const struct mtk_pin_desc *)&hw->soc->pins[pin];
+@@ -114,7 +115,13 @@ static int mtk_pinconf_get(struct pinctr
+
+ switch (param) {
+ case PIN_CONFIG_BIAS_DISABLE:
+- if (hw->soc->bias_disable_get) {
++ if (hw->soc->bias_get_combo) {
++ err = hw->soc->bias_get_combo(hw, desc, &pullup, &ret);
++ if (err)
++ return err;
++ if (ret != MTK_PUPD_SET_R1R0_00 && ret != MTK_DISABLE)
++ return -EINVAL;
++ } else if (hw->soc->bias_disable_get) {
+ err = hw->soc->bias_disable_get(hw, desc, &ret);
+ if (err)
+ return err;
+@@ -123,7 +130,15 @@ static int mtk_pinconf_get(struct pinctr
+ }
+ break;
+ case PIN_CONFIG_BIAS_PULL_UP:
+- if (hw->soc->bias_get) {
++ if (hw->soc->bias_get_combo) {
++ err = hw->soc->bias_get_combo(hw, desc, &pullup, &ret);
++ if (err)
++ return err;
++ if (ret == MTK_PUPD_SET_R1R0_00 || ret == MTK_DISABLE)
++ return -EINVAL;
++ if (!pullup)
++ return -EINVAL;
++ } else if (hw->soc->bias_get) {
+ err = hw->soc->bias_get(hw, desc, 1, &ret);
+ if (err)
+ return err;
+@@ -132,7 +147,15 @@ static int mtk_pinconf_get(struct pinctr
+ }
+ break;
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+- if (hw->soc->bias_get) {
++ if (hw->soc->bias_get_combo) {
++ err = hw->soc->bias_get_combo(hw, desc, &pullup, &ret);
++ if (err)
++ return err;
++ if (ret == MTK_PUPD_SET_R1R0_00 || ret == MTK_DISABLE)
++ return -EINVAL;
++ if (pullup)
++ return -EINVAL;
++ } else if (hw->soc->bias_get) {
+ err = hw->soc->bias_get(hw, desc, 0, &ret);
+ if (err)
+ return err;
+@@ -235,7 +258,11 @@ static int mtk_pinconf_set(struct pinctr
+
+ switch (param) {
+ case PIN_CONFIG_BIAS_DISABLE:
+- if (hw->soc->bias_disable_set) {
++ if (hw->soc->bias_set_combo) {
++ err = hw->soc->bias_set_combo(hw, desc, 0, MTK_DISABLE);
++ if (err)
++ return err;
++ } else if (hw->soc->bias_disable_set) {
+ err = hw->soc->bias_disable_set(hw, desc);
+ if (err)
+ return err;
+@@ -244,7 +271,11 @@ static int mtk_pinconf_set(struct pinctr
+ }
+ break;
+ case PIN_CONFIG_BIAS_PULL_UP:
+- if (hw->soc->bias_set) {
++ if (hw->soc->bias_set_combo) {
++ err = hw->soc->bias_set_combo(hw, desc, 1, arg);
++ if (err)
++ return err;
++ } else if (hw->soc->bias_set) {
+ err = hw->soc->bias_set(hw, desc, 1);
+ if (err)
+ return err;
+@@ -253,7 +284,11 @@ static int mtk_pinconf_set(struct pinctr
+ }
+ break;
+ case PIN_CONFIG_BIAS_PULL_DOWN:
+- if (hw->soc->bias_set) {
++ if (hw->soc->bias_set_combo) {
++ err = hw->soc->bias_set_combo(hw, desc, 0, arg);
++ if (err)
++ return err;
++ } else if (hw->soc->bias_set) {
+ err = hw->soc->bias_set(hw, desc, 0);
+ if (err)
+ return err;
projects / openwrt / staging / nbd.git / commitdiff