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Message-ID: <20220819065946.9572-1-Gireesh.Hiremath@in.bosch.com>
Date: Fri, 19 Aug 2022 06:59:44 +0000
From: <Gireesh.Hiremath@...bosch.com>
To: <linux-omap@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-input@...r.kernel.org>,
<bcousson@...libre.com>, <tony@...mide.com>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <dmitry.torokhov@...il.com>,
<mkorpershoek@...libre.com>, <davidgow@...gle.com>,
<m.felsch@...gutronix.de>, <swboyd@...omium.org>,
<fengping.yu@...iatek.com>, <y.oudjana@...tonmail.com>,
<rdunlap@...radead.org>, <colin.king@...el.com>,
<Gireesh.Hiremath@...bosch.com>
CC: <sjoerd.simons@...labora.co.uk>, <VinayKumar.Shettar@...bosch.com>,
<Govindaraji.Sivanantham@...bosch.com>,
<anaclaudia.dias@...bosch.com>
Subject: [PATCH v3 1/3] driver: input: matric-keypad: switch to gpiod
From: Gireesh Hiremath <Gireesh.Hiremath@...bosch.com>
Switch from gpio API to gpiod API
Signed-off-by: Gireesh Hiremath <Gireesh.Hiremath@...bosch.com>
Gbp-Pq: Topic apertis/guardian
Gbp-Pq: Name driver-input-matric-keypad-switch-gpio-to-gpiod.patch
---
drivers/input/keyboard/matrix_keypad.c | 84 ++++++++++----------------
include/linux/input/matrix_keypad.h | 4 +-
2 files changed, 33 insertions(+), 55 deletions(-)
diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c
index 30924b57058f..b99574edad9c 100644
--- a/drivers/input/keyboard/matrix_keypad.c
+++ b/drivers/input/keyboard/matrix_keypad.c
@@ -15,11 +15,10 @@
#include <linux/interrupt.h>
#include <linux/jiffies.h>
#include <linux/module.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/input/matrix_keypad.h>
#include <linux/slab.h>
#include <linux/of.h>
-#include <linux/of_gpio.h>
#include <linux/of_platform.h>
struct matrix_keypad {
@@ -49,11 +48,11 @@ 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]);
}
}
@@ -78,7 +77,7 @@ 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;
}
@@ -91,7 +90,7 @@ 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]));
}
}
@@ -104,7 +103,7 @@ 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]));
}
}
@@ -230,7 +229,7 @@ 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) {
@@ -242,7 +241,7 @@ 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);
}
}
@@ -252,7 +251,7 @@ 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) {
@@ -264,7 +263,7 @@ 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));
}
}
}
@@ -308,27 +307,11 @@ 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");
- if (err) {
- dev_err(&pdev->dev,
- "failed to request GPIO%d for COL%d\n",
- pdata->col_gpios[i], i);
- goto err_free_cols;
- }
-
- gpio_direction_output(pdata->col_gpios[i], !pdata->active_low);
+ gpiod_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");
- if (err) {
- dev_err(&pdev->dev,
- "failed to request GPIO%d for ROW%d\n",
- pdata->row_gpios[i], i);
- goto err_free_rows;
- }
-
- gpio_direction_input(pdata->row_gpios[i]);
+ gpiod_direction_input(pdata->row_gpios[i]);
}
if (pdata->clustered_irq > 0) {
@@ -344,7 +327,7 @@ 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,
@@ -352,7 +335,7 @@ static int matrix_keypad_init_gpio(struct platform_device *pdev,
if (err < 0) {
dev_err(&pdev->dev,
"Unable to acquire interrupt for GPIO line %i\n",
- pdata->row_gpios[i]);
+ i);
goto err_free_irqs;
}
}
@@ -364,15 +347,12 @@ 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]);
return err;
}
@@ -386,14 +366,14 @@ 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
@@ -402,7 +382,8 @@ matrix_keypad_parse_dt(struct device *dev)
{
struct matrix_keypad_platform_data *pdata;
struct device_node *np = dev->of_node;
- unsigned int *gpios;
+ struct gpio_desc **gpios;
+ struct gpio_desc *desc;
int ret, i, nrow, ncol;
if (!np) {
@@ -416,8 +397,8 @@ matrix_keypad_parse_dt(struct device *dev)
return ERR_PTR(-ENOMEM);
}
- pdata->num_row_gpios = nrow = of_gpio_named_count(np, "row-gpios");
- pdata->num_col_gpios = ncol = of_gpio_named_count(np, "col-gpios");
+ pdata->num_row_gpios = nrow = gpiod_count(dev, "row");
+ pdata->num_col_gpios = ncol = gpiod_count(dev, "col");
if (nrow <= 0 || ncol <= 0) {
dev_err(dev, "number of keypad rows/columns not specified\n");
return ERR_PTR(-EINVAL);
@@ -429,9 +410,6 @@ matrix_keypad_parse_dt(struct device *dev)
pdata->wakeup = of_property_read_bool(np, "wakeup-source") ||
of_property_read_bool(np, "linux,wakeup"); /* legacy */
- if (of_get_property(np, "gpio-activelow", NULL))
- pdata->active_low = true;
-
pdata->drive_inactive_cols =
of_property_read_bool(np, "drive-inactive-cols");
@@ -441,7 +419,7 @@ 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");
@@ -449,17 +427,17 @@ 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)
+ desc = devm_gpiod_get_index(dev, "row", i, GPIOD_IN);
+ if (IS_ERR(desc))
return ERR_PTR(ret);
- gpios[i] = ret;
+ gpios[i] = desc;
}
for (i = 0; i < ncol; i++) {
- ret = of_get_named_gpio(np, "col-gpios", i);
- if (ret < 0)
+ desc = devm_gpiod_get_index(dev, "col", i, GPIOD_IN);
+ if (IS_ERR(desc))
return ERR_PTR(ret);
- gpios[nrow + i] = ret;
+ 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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