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Date: Fri, 13 Jan 2023 06:25:38 +0000
From: <Gireesh.Hiremath@...bosch.com>
To: <linux-input@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<dmitry.torokhov@...il.com>, <andriy.shevchenko@...ux.intel.com>,
<Jonathan.Cameron@...wei.com>, <lis8215@...il.com>
CC: <Gireesh.Hiremath@...bosch.com>, <sjoerd.simons@...labora.co.uk>,
<VinayKumar.Shettar@...bosch.com>,
<Govindaraji.Sivanantham@...bosch.com>,
<anaclaudia.dias@...bosch.com>
Subject: [PATCH] driver: input: matric-keypad: switch to gpiod API
From: Gireesh Hiremath <Gireesh.Hiremath@...bosch.com>
switch to new gpio descriptor based API
Signed-off-by: Gireesh Hiremath <Gireesh.Hiremath@...bosch.com>
---
drivers/input/keyboard/matrix_keypad.c | 77 ++++++++++++--------------
include/linux/input/matrix_keypad.h | 4 +-
2 files changed, 38 insertions(+), 43 deletions(-)
diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c
index 203310727d88..3697f203b3cc 100644
--- a/drivers/input/keyboard/matrix_keypad.c
+++ b/drivers/input/keyboard/matrix_keypad.c
@@ -50,11 +50,11 @@ static void __activate_col(const struct matrix_keypad_platform_data *pdata,
bool level_on = !pdata->active_low;
if (on) {
- gpio_direction_output(pdata->col_gpios[col], level_on);
+ gpiod_direction_output(pdata->col_gpios[col], level_on);
} else {
- gpio_set_value_cansleep(pdata->col_gpios[col], !level_on);
+ gpiod_set_value_cansleep(pdata->col_gpios[col], !level_on);
if (!pdata->drive_inactive_cols)
- gpio_direction_input(pdata->col_gpios[col]);
+ gpiod_direction_input(pdata->col_gpios[col]);
}
}
@@ -79,7 +79,7 @@ static void activate_all_cols(const struct matrix_keypad_platform_data *pdata,
static bool row_asserted(const struct matrix_keypad_platform_data *pdata,
int row)
{
- return gpio_get_value_cansleep(pdata->row_gpios[row]) ?
+ return gpiod_get_value_cansleep(pdata->row_gpios[row]) ?
!pdata->active_low : pdata->active_low;
}
@@ -92,7 +92,7 @@ static void enable_row_irqs(struct matrix_keypad *keypad)
enable_irq(pdata->clustered_irq);
else {
for (i = 0; i < pdata->num_row_gpios; i++)
- enable_irq(gpio_to_irq(pdata->row_gpios[i]));
+ enable_irq(gpiod_to_irq(pdata->row_gpios[i]));
}
}
@@ -105,7 +105,7 @@ static void disable_row_irqs(struct matrix_keypad *keypad)
disable_irq_nosync(pdata->clustered_irq);
else {
for (i = 0; i < pdata->num_row_gpios; i++)
- disable_irq_nosync(gpio_to_irq(pdata->row_gpios[i]));
+ disable_irq_nosync(gpiod_to_irq(pdata->row_gpios[i]));
}
}
@@ -128,7 +128,7 @@ static void matrix_keypad_scan(struct work_struct *work)
memset(new_state, 0, sizeof(new_state));
for (row = 0; row < pdata->num_row_gpios; row++)
- gpio_direction_input(pdata->row_gpios[row]);
+ gpiod_direction_input(pdata->row_gpios[row]);
/* assert each column and read the row status out */
for (col = 0; col < pdata->num_col_gpios; col++) {
@@ -233,7 +233,7 @@ static void matrix_keypad_stop(struct input_dev *dev)
static void matrix_keypad_enable_wakeup(struct matrix_keypad *keypad)
{
const struct matrix_keypad_platform_data *pdata = keypad->pdata;
- unsigned int gpio;
+ struct gpio_desc *gpio;
int i;
if (pdata->clustered_irq > 0) {
@@ -245,7 +245,7 @@ static void matrix_keypad_enable_wakeup(struct matrix_keypad *keypad)
if (!test_bit(i, keypad->disabled_gpios)) {
gpio = pdata->row_gpios[i];
- if (enable_irq_wake(gpio_to_irq(gpio)) == 0)
+ if (enable_irq_wake(gpiod_to_irq(gpio)) == 0)
__set_bit(i, keypad->disabled_gpios);
}
}
@@ -255,7 +255,7 @@ static void matrix_keypad_enable_wakeup(struct matrix_keypad *keypad)
static void matrix_keypad_disable_wakeup(struct matrix_keypad *keypad)
{
const struct matrix_keypad_platform_data *pdata = keypad->pdata;
- unsigned int gpio;
+ struct gpio_desc *gpio;
int i;
if (pdata->clustered_irq > 0) {
@@ -267,7 +267,7 @@ static void matrix_keypad_disable_wakeup(struct matrix_keypad *keypad)
for (i = 0; i < pdata->num_row_gpios; i++) {
if (test_and_clear_bit(i, keypad->disabled_gpios)) {
gpio = pdata->row_gpios[i];
- disable_irq_wake(gpio_to_irq(gpio));
+ disable_irq_wake(gpiod_to_irq(gpio));
}
}
}
@@ -310,27 +310,21 @@ static int matrix_keypad_init_gpio(struct platform_device *pdev,
/* initialized strobe lines as outputs, activated */
for (i = 0; i < pdata->num_col_gpios; i++) {
- err = gpio_request(pdata->col_gpios[i], "matrix_kbd_col");
+ err = gpiod_direction_output(pdata->col_gpios[i], !pdata->active_low);
if (err) {
dev_err(&pdev->dev,
- "failed to request GPIO%d for COL%d\n",
- pdata->col_gpios[i], i);
+ "Unable to set direction for COL GPIO line %i\n", i);
goto err_free_cols;
}
-
- gpio_direction_output(pdata->col_gpios[i], !pdata->active_low);
}
for (i = 0; i < pdata->num_row_gpios; i++) {
- err = gpio_request(pdata->row_gpios[i], "matrix_kbd_row");
+ err = gpiod_direction_input(pdata->row_gpios[i]);
if (err) {
dev_err(&pdev->dev,
- "failed to request GPIO%d for ROW%d\n",
- pdata->row_gpios[i], i);
+ "Unable to set direction for ROW GPIO line %i\n", i);
goto err_free_rows;
}
-
- gpio_direction_input(pdata->row_gpios[i]);
}
if (pdata->clustered_irq > 0) {
@@ -346,15 +340,15 @@ static int matrix_keypad_init_gpio(struct platform_device *pdev,
} else {
for (i = 0; i < pdata->num_row_gpios; i++) {
err = request_any_context_irq(
- gpio_to_irq(pdata->row_gpios[i]),
+ gpiod_to_irq(pdata->row_gpios[i]),
matrix_keypad_interrupt,
IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING,
"matrix-keypad", keypad);
if (err < 0) {
dev_err(&pdev->dev,
- "Unable to acquire interrupt for GPIO line %i\n",
- pdata->row_gpios[i]);
+ "Unable to acquire interrupt for ROW GPIO line %i\n",
+ i);
goto err_free_irqs;
}
}
@@ -366,15 +360,15 @@ static int matrix_keypad_init_gpio(struct platform_device *pdev,
err_free_irqs:
while (--i >= 0)
- free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);
+ free_irq(gpiod_to_irq(pdata->row_gpios[i]), keypad);
i = pdata->num_row_gpios;
err_free_rows:
while (--i >= 0)
- gpio_free(pdata->row_gpios[i]);
+ gpiod_put(pdata->row_gpios[i]);
i = pdata->num_col_gpios;
err_free_cols:
while (--i >= 0)
- gpio_free(pdata->col_gpios[i]);
+ gpiod_put(pdata->col_gpios[i]);
return err;
}
@@ -388,14 +382,14 @@ static void matrix_keypad_free_gpio(struct matrix_keypad *keypad)
free_irq(pdata->clustered_irq, keypad);
} else {
for (i = 0; i < pdata->num_row_gpios; i++)
- free_irq(gpio_to_irq(pdata->row_gpios[i]), keypad);
+ free_irq(gpiod_to_irq(pdata->row_gpios[i]), keypad);
}
for (i = 0; i < pdata->num_row_gpios; i++)
- gpio_free(pdata->row_gpios[i]);
+ gpiod_put(pdata->row_gpios[i]);
for (i = 0; i < pdata->num_col_gpios; i++)
- gpio_free(pdata->col_gpios[i]);
+ gpiod_put(pdata->col_gpios[i]);
}
#ifdef CONFIG_OF
@@ -404,8 +398,9 @@ matrix_keypad_parse_dt(struct device *dev)
{
struct matrix_keypad_platform_data *pdata;
struct device_node *np = dev->of_node;
- unsigned int *gpios;
- int ret, i, nrow, ncol;
+ struct gpio_desc **gpios;
+ struct gpio_desc *desc;
+ int i, nrow, ncol;
if (!np) {
dev_err(dev, "device lacks DT data\n");
@@ -443,7 +438,7 @@ matrix_keypad_parse_dt(struct device *dev)
gpios = devm_kcalloc(dev,
pdata->num_row_gpios + pdata->num_col_gpios,
- sizeof(unsigned int),
+ sizeof(*gpios),
GFP_KERNEL);
if (!gpios) {
dev_err(dev, "could not allocate memory for gpios\n");
@@ -451,17 +446,17 @@ matrix_keypad_parse_dt(struct device *dev)
}
for (i = 0; i < nrow; i++) {
- ret = of_get_named_gpio(np, "row-gpios", i);
- if (ret < 0)
- return ERR_PTR(ret);
- gpios[i] = ret;
+ desc = gpiod_get_index(dev, "row", i, GPIOD_IN);
+ if (IS_ERR(desc))
+ return ERR_PTR(-EINVAL);
+ gpios[i] = desc;
}
for (i = 0; i < ncol; i++) {
- ret = of_get_named_gpio(np, "col-gpios", i);
- if (ret < 0)
- return ERR_PTR(ret);
- gpios[nrow + i] = ret;
+ desc = gpiod_get_index(dev, "col", i, GPIOD_IN);
+ if (IS_ERR(desc))
+ return ERR_PTR(-EINVAL);
+ gpios[nrow + i] = desc;
}
pdata->row_gpios = gpios;
diff --git a/include/linux/input/matrix_keypad.h b/include/linux/input/matrix_keypad.h
index 9476768c3b90..8ad7d4626e62 100644
--- a/include/linux/input/matrix_keypad.h
+++ b/include/linux/input/matrix_keypad.h
@@ -59,8 +59,8 @@ struct matrix_keymap_data {
struct matrix_keypad_platform_data {
const struct matrix_keymap_data *keymap_data;
- const unsigned int *row_gpios;
- const unsigned int *col_gpios;
+ struct gpio_desc **row_gpios;
+ struct gpio_desc **col_gpios;
unsigned int num_row_gpios;
unsigned int num_col_gpios;
--
2.20.1
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