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Subject[PATCH v2 16/22] pinctrl: mediatek: extend struct mtk_pin_desc which per-pin driver depends on
Date
From: Sean Wang <sean.wang@mediatek.com>

Because the pincrl-mtk-common.c is an implementation for per-pin binding,
its pin descriptor includes more information than pinctrl-mtk-common-v2
so far can support. So, we complement these data before writing a driver
using pincrl-mtk-common-v2.c for per-pin binding. By the way, the size of
struct mtk_pin_desc would be larger than struct pinctrl_pin_desc can hold,
so it's necessary to have a copy before the pins information is being
registered into the core.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
---
drivers/pinctrl/mediatek/pinctrl-moore.c | 28 ++++++++++++------
drivers/pinctrl/mediatek/pinctrl-moore.h | 8 ++++--
drivers/pinctrl/mediatek/pinctrl-mt7622.c | 5 ++--
drivers/pinctrl/mediatek/pinctrl-mt7623.c | 5 ++--
drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h | 36 +++++++++++++++++++++---
5 files changed, 62 insertions(+), 20 deletions(-)

diff --git a/drivers/pinctrl/mediatek/pinctrl-moore.c b/drivers/pinctrl/mediatek/pinctrl-moore.c
index 2817e47..f0390b3 100644
--- a/drivers/pinctrl/mediatek/pinctrl-moore.c
+++ b/drivers/pinctrl/mediatek/pinctrl-moore.c
@@ -475,10 +475,10 @@ static int mtk_gpio_to_irq(struct gpio_chip *chip, unsigned int offset)

desc = (const struct mtk_pin_desc *)&hw->soc->pins[offset];

- if (desc->eint_n == EINT_NA)
+ if (desc->eint.eint_n == EINT_NA)
return -ENOTSUPP;

- return mtk_eint_find_irq(hw->eint, desc->eint_n);
+ return mtk_eint_find_irq(hw->eint, desc->eint.eint_n);
}

static int mtk_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
@@ -492,12 +492,12 @@ static int mtk_gpio_set_config(struct gpio_chip *chip, unsigned int offset,

if (!hw->eint ||
pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE ||
- desc->eint_n == EINT_NA)
+ desc->eint.eint_n == EINT_NA)
return -ENOTSUPP;

debounce = pinconf_to_config_argument(config);

- return mtk_eint_set_debounce(hw->eint, desc->eint_n, debounce);
+ return mtk_eint_set_debounce(hw->eint, desc->eint.eint_n, debounce);
}

static int mtk_build_gpiochip(struct mtk_pinctrl *hw, struct device_node *np)
@@ -593,7 +593,7 @@ static int mtk_xt_find_eint_num(struct mtk_pinctrl *hw,
desc = (const struct mtk_pin_desc *)hw->soc->pins;

while (i < hw->soc->npins) {
- if (desc[i].eint_n == eint_n)
+ if (desc[i].eint.eint_n == eint_n)
return desc[i].number;
i++;
}
@@ -612,7 +612,7 @@ static int mtk_xt_get_gpio_n(void *data, unsigned long eint_n,
*gpio_chip = &hw->chip;

/* Be greedy to guess first gpio_n is equal to eint_n */
- if (desc[eint_n].eint_n == eint_n)
+ if (desc[eint_n].eint.eint_n == eint_n)
*gpio_n = eint_n;
else
*gpio_n = mtk_xt_find_eint_num(hw, eint_n);
@@ -649,7 +649,7 @@ static int mtk_xt_set_gpio_as_eint(void *data, unsigned long eint_n)
desc = (const struct mtk_pin_desc *)&hw->soc->pins[gpio_n];

err = mtk_hw_set_value(hw, desc, PINCTRL_PIN_REG_MODE,
- hw->soc->eint_m);
+ desc->eint.eint_m);
if (err)
return err;

@@ -711,6 +711,7 @@ mtk_build_eint(struct mtk_pinctrl *hw, struct platform_device *pdev)
int mtk_moore_pinctrl_probe(struct platform_device *pdev,
const struct mtk_pin_soc *soc)
{
+ struct pinctrl_pin_desc *pins;
struct resource *res;
struct mtk_pinctrl *hw;
int err, i;
@@ -748,8 +749,19 @@ int mtk_moore_pinctrl_probe(struct platform_device *pdev,

hw->nbase = hw->soc->nbase_names;

+ /* Copy from internal struct mtk_pin_desc to register to the core */
+ pins = devm_kmalloc_array(&pdev->dev, hw->soc->npins, sizeof(*pins),
+ GFP_KERNEL);
+ if (IS_ERR(pins))
+ return PTR_ERR(pins);
+
+ for (i = 0; i < hw->soc->npins; i++) {
+ pins[i].number = hw->soc->pins[i].number;
+ pins[i].name = hw->soc->pins[i].name;
+ }
+
/* Setup pins descriptions per SoC types */
- mtk_desc.pins = (const struct pinctrl_pin_desc *)hw->soc->pins;
+ mtk_desc.pins = (const struct pinctrl_pin_desc *)pins;
mtk_desc.npins = hw->soc->npins;
mtk_desc.num_custom_params = ARRAY_SIZE(mtk_custom_bindings);
mtk_desc.custom_params = mtk_custom_bindings;
diff --git a/drivers/pinctrl/mediatek/pinctrl-moore.h b/drivers/pinctrl/mediatek/pinctrl-moore.h
index b965cc1..74a6568 100644
--- a/drivers/pinctrl/mediatek/pinctrl-moore.h
+++ b/drivers/pinctrl/mediatek/pinctrl-moore.h
@@ -28,11 +28,15 @@

#define MTK_RANGE(_a) { .range = (_a), .nranges = ARRAY_SIZE(_a), }

-#define MTK_PIN(_number, _name, _eint_n, _drv_n) { \
+#define MTK_PIN(_number, _name, _eint_m, _eint_n, _drv_n) { \
.number = _number, \
.name = _name, \
- .eint_n = _eint_n, \
+ .eint = { \
+ .eint_m = _eint_m, \
+ .eint_n = _eint_n, \
+ }, \
.drv_n = _drv_n, \
+ .funcs = NULL, \
}

#define PINCTRL_PIN_GROUP(name, id) \
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt7622.c b/drivers/pinctrl/mediatek/pinctrl-mt7622.c
index 769b36a..ce4a8a0 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt7622.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt7622.c
@@ -9,7 +9,7 @@
#include "pinctrl-moore.h"

#define MT7622_PIN(_number, _name) \
- MTK_PIN(_number, _name, _number, DRV_GRP0)
+ MTK_PIN(_number, _name, 1, _number, DRV_GRP0)

static const struct mtk_pin_field_calc mt7622_pin_mode_range[] = {
PIN_FIELD(0, 0, 0x320, 0x10, 16, 4),
@@ -758,7 +758,7 @@ static const struct mtk_eint_hw mt7622_eint_hw = {

static const struct mtk_pin_soc mt7622_data = {
.reg_cal = mt7622_reg_cals,
- .pins = (const struct pinctrl_pin_desc *)mt7622_pins,
+ .pins = mt7622_pins,
.npins = ARRAY_SIZE(mt7622_pins),
.grps = mt7622_groups,
.ngrps = ARRAY_SIZE(mt7622_groups),
@@ -766,7 +766,6 @@ static const struct mtk_pin_soc mt7622_data = {
.nfuncs = ARRAY_SIZE(mt7622_functions),
.eint_hw = &mt7622_eint_hw,
.gpio_m = 1,
- .eint_m = 1,
.ies_present = false,
.base_names = mtk_default_register_base_names,
.nbase_names = ARRAY_SIZE(mtk_default_register_base_names),
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt7623.c b/drivers/pinctrl/mediatek/pinctrl-mt7623.c
index 1f2030c..b8d9d31 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt7623.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt7623.c
@@ -30,7 +30,7 @@
_x_bits, 16, 1)

#define MT7623_PIN(_number, _name, _eint_n, _drv_grp) \
- MTK_PIN(_number, _name, _eint_n, _drv_grp)
+ MTK_PIN(_number, _name, 0, _eint_n, _drv_grp)

static const struct mtk_pin_field_calc mt7623_pin_mode_range[] = {
PIN_FIELD15(0, 278, 0x760, 0x10, 0, 3),
@@ -1373,7 +1373,7 @@ static const struct mtk_eint_hw mt7623_eint_hw = {

static struct mtk_pin_soc mt7623_data = {
.reg_cal = mt7623_reg_cals,
- .pins = (const struct pinctrl_pin_desc *)mt7623_pins,
+ .pins = mt7623_pins,
.npins = ARRAY_SIZE(mt7623_pins),
.grps = mt7623_groups,
.ngrps = ARRAY_SIZE(mt7623_groups),
@@ -1381,7 +1381,6 @@ static struct mtk_pin_soc mt7623_data = {
.nfuncs = ARRAY_SIZE(mt7623_functions),
.eint_hw = &mt7623_eint_hw,
.gpio_m = 0,
- .eint_m = 0,
.ies_present = true,
.base_names = mtk_default_register_base_names,
.nbase_names = ARRAY_SIZE(mtk_default_register_base_names),
diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h
index 040c6b7..d5819ca 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.h
@@ -134,18 +134,44 @@ struct mtk_pin_reg_calc {
};

/**
+ * struct mtk_func_desc - the structure that providing information
+ * all the funcs for this pin
+ * @name: the name of function
+ * @muxval: the mux to the function
+ */
+struct mtk_func_desc {
+ const char *name;
+ u8 muxval;
+};
+
+/**
+ * struct mtk_eint_desc - the structure that providing information
+ * for eint data per pin
+ * @eint_m: the eint mux for this pin
+ * @eitn_n: the eint number for this pin
+ */
+struct mtk_eint_desc {
+ u8 eint_m;
+ u16 eint_n;
+};
+
+/**
* struct mtk_pin_desc - the structure that providing information
* for each pin of chips
* @number: unique pin number from the global pin number space
* @name: name for this pin
- * @eint_n: the eint number for this pin
+ * @eint: the eint data for this pin
* @drv_n: the index with the driving group
+ * @funcs: all available functions for this pins (only used in
+ * those drivers compatible to pinctrl-mtk-common.c-like
+ * ones)
*/
struct mtk_pin_desc {
unsigned int number;
const char *name;
- u16 eint_n;
+ struct mtk_eint_desc eint;
u8 drv_n;
+ struct mtk_func_desc *funcs;
};

struct mtk_pinctrl;
@@ -153,7 +179,7 @@ struct mtk_pinctrl;
/* struct mtk_pin_soc - the structure that holds SoC-specific data */
struct mtk_pin_soc {
const struct mtk_pin_reg_calc *reg_cal;
- const struct pinctrl_pin_desc *pins;
+ const struct mtk_pin_desc *pins;
unsigned int npins;
const struct group_desc *grps;
unsigned int ngrps;
@@ -164,7 +190,6 @@ struct mtk_pin_soc {

/* Specific parameters per SoC */
u8 gpio_m;
- u8 eint_m;
bool ies_present;
const char * const *base_names;
unsigned int nbase_names;
@@ -190,6 +215,9 @@ struct mtk_pin_soc {
int (*adv_pull_get)(struct mtk_pinctrl *hw,
const struct mtk_pin_desc *desc, bool pullup,
u32 *val);
+
+ /* Specific driver data */
+ void *driver_data;
};

struct mtk_pinctrl {
--
2.7.4
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