[PATCH 5.15 147/164] pinctrl: qcom: Update lpi pin group custiom functions with framework generic functions

Sasha Levin
2026-02-28T18:17:08Z

From: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>

[ Upstream commit be73368d535614b351c13a10680b4cdd06db2417 ]

Update custom pin group structure members with framework generic
group_desc structure and replace the driver's custom pinctrl_ops
with framework provided generic pin control group functions to avoid
redundant code written in lpass lpi driver.

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Co-developed-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
Signed-off-by: Venkata Prasad Potturu <quic_potturu@quicinc.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/1650285427-19752-5-git-send-email-quic_srivasam@quicinc.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Stable-dep-of: eabf273c8466 ("pinctrl: qcom: sm8250-lpass-lpi: Fix i2s2_data_groups definition")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/pinctrl/qcom/Kconfig | 1 +
drivers/pinctrl/qcom/pinctrl-lpass-lpi.c | 102 +++++++++++------------
2 files changed, 52 insertions(+), 51 deletions(-)

diff --git a/drivers/pinctrl/qcom/Kconfig b/drivers/pinctrl/qcom/Kconfig
index f1b5176a5085b..254018c5b3bcc 100644
--- a/drivers/pinctrl/qcom/Kconfig
+++ b/drivers/pinctrl/qcom/Kconfig
@@ -316,6 +316,7 @@ config PINCTRL_LPASS_LPI
select PINMUX
select PINCONF
select GENERIC_PINCONF
+ select GENERIC_PINCTRL_GROUPS
depends on GPIOLIB
help
This is the pinctrl, pinmux, pinconf and gpiolib driver for the
diff --git a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
index 5e89fa4176a2c..d253787f09f1d 100644
--- a/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
+++ b/drivers/pinctrl/qcom/pinctrl-lpass-lpi.c
@@ -51,11 +51,11 @@

#define LPI_PINGROUP(id, soff, f1, f2, f3, f4) \
{ \
- .name = "gpio" #id, \
- .pins = gpio##id##_pins, \
+ .group.name = "gpio" #id, \
+ .group.pins = gpio##id##_pins, \
.pin = id, \
.slew_offset = soff, \
- .npins = ARRAY_SIZE(gpio##id##_pins), \
+ .group.num_pins = ARRAY_SIZE(gpio##id##_pins), \
.funcs = (int[]){ \
LPI_MUX_gpio, \
LPI_MUX_##f1, \
@@ -67,9 +67,7 @@
}

struct lpi_pingroup {
- const char *name;
- const unsigned int *pins;
- unsigned int npins;
+ struct group_desc group;
unsigned int pin;
/* Bit offset in slew register for SoundWire pins only */
int slew_offset;
@@ -151,20 +149,20 @@ enum sm8250_lpi_functions {
LPI_MUX__,
};

-static const unsigned int gpio0_pins[] = { 0 };
-static const unsigned int gpio1_pins[] = { 1 };
-static const unsigned int gpio2_pins[] = { 2 };
-static const unsigned int gpio3_pins[] = { 3 };
-static const unsigned int gpio4_pins[] = { 4 };
-static const unsigned int gpio5_pins[] = { 5 };
-static const unsigned int gpio6_pins[] = { 6 };
-static const unsigned int gpio7_pins[] = { 7 };
-static const unsigned int gpio8_pins[] = { 8 };
-static const unsigned int gpio9_pins[] = { 9 };
-static const unsigned int gpio10_pins[] = { 10 };
-static const unsigned int gpio11_pins[] = { 11 };
-static const unsigned int gpio12_pins[] = { 12 };
-static const unsigned int gpio13_pins[] = { 13 };
+static int gpio0_pins[] = { 0 };
+static int gpio1_pins[] = { 1 };
+static int gpio2_pins[] = { 2 };
+static int gpio3_pins[] = { 3 };
+static int gpio4_pins[] = { 4 };
+static int gpio5_pins[] = { 5 };
+static int gpio6_pins[] = { 6 };
+static int gpio7_pins[] = { 7 };
+static int gpio8_pins[] = { 8 };
+static int gpio9_pins[] = { 9 };
+static int gpio10_pins[] = { 10 };
+static int gpio11_pins[] = { 11 };
+static int gpio12_pins[] = { 12 };
+static int gpio13_pins[] = { 13 };
static const char * const swr_tx_clk_groups[] = { "gpio0" };
static const char * const swr_tx_data_groups[] = { "gpio1", "gpio2", "gpio5" };
static const char * const swr_rx_clk_groups[] = { "gpio3" };
@@ -251,38 +249,10 @@ static int lpi_gpio_write(struct lpi_pinctrl *state, unsigned int pin,
return 0;
}

-static int lpi_gpio_get_groups_count(struct pinctrl_dev *pctldev)
-{
- struct lpi_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
-
- return pctrl->data->ngroups;
-}
-
-static const char *lpi_gpio_get_group_name(struct pinctrl_dev *pctldev,
- unsigned int group)
-{
- struct lpi_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
-
- return pctrl->data->groups[group].name;
-}
-
-static int lpi_gpio_get_group_pins(struct pinctrl_dev *pctldev,
- unsigned int group,
- const unsigned int **pins,
- unsigned int *num_pins)
-{
- struct lpi_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
-
- *pins = pctrl->data->groups[group].pins;
- *num_pins = pctrl->data->groups[group].npins;
-
- return 0;
-}
-
static const struct pinctrl_ops lpi_gpio_pinctrl_ops = {
- .get_groups_count = lpi_gpio_get_groups_count,
- .get_group_name = lpi_gpio_get_group_name,
- .get_group_pins = lpi_gpio_get_group_pins,
+ .get_groups_count = pinctrl_generic_get_group_count,
+ .get_group_name = pinctrl_generic_get_group_name,
+ .get_group_pins = pinctrl_generic_get_group_pins,
.dt_node_to_map = pinconf_generic_dt_node_to_map_group,
.dt_free_map = pinctrl_utils_free_map,
};
@@ -608,6 +578,28 @@ static const struct gpio_chip lpi_gpio_template = {
.dbg_show = lpi_gpio_dbg_show,
};

+static int lpi_build_pin_desc_groups(struct lpi_pinctrl *pctrl)
+{
+ int i, ret;
+
+ for (i = 0; i < pctrl->data->npins; i++) {
+ const struct pinctrl_pin_desc *pin_info = pctrl->desc.pins + i;
+
+ ret = pinctrl_generic_add_group(pctrl->ctrl, pin_info->name,
+ (int *)&pin_info->number, 1, NULL);
+ if (ret < 0)
+ goto err_pinctrl;
+ }
+
+ return 0;
+
+err_pinctrl:
+ for (; i > 0; i--)
+ pinctrl_generic_remove_group(pctrl->ctrl, i - 1);
+
+ return ret;
+}
+
static int lpi_pinctrl_probe(struct platform_device *pdev)
{
const struct lpi_pinctrl_variant_data *data;
@@ -672,6 +664,10 @@ static int lpi_pinctrl_probe(struct platform_device *pdev)
goto err_pinctrl;
}

+ ret = lpi_build_pin_desc_groups(pctrl);
+ if (ret)
+ goto err_pinctrl;
+
ret = devm_gpiochip_add_data(dev, &pctrl->chip, pctrl);
if (ret) {
dev_err(pctrl->dev, "can't add gpio chip\n");
@@ -690,10 +686,14 @@ static int lpi_pinctrl_probe(struct platform_device *pdev)
static int lpi_pinctrl_remove(struct platform_device *pdev)
{
struct lpi_pinctrl *pctrl = platform_get_drvdata(pdev);
+ int i;

mutex_destroy(&pctrl->lock);
clk_bulk_disable_unprepare(MAX_LPI_NUM_CLKS, pctrl->clks);

+ for (i = 0; i < pctrl->data->npins; i++)
+ pinctrl_generic_remove_group(pctrl->ctrl, i);
+
return 0;
}

--
2.51.0