[PATCH 5.10 40/73] serial: max310x: Make use of device properties

Sasha Levin
2024-03-13T16:47:26Z

From: Andy Shevchenko <andy.shevchenko@gmail.com>

[ Upstream commit c808fab604ca62cff19ee6b261211483830807aa ]

Device property API allows to gather device resources from different sources,
such as ACPI. Convert the drivers to unleash the power of device property API.

Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20201007084635.594991-1-andy.shevchenko@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: b35f8dbbce81 ("serial: max310x: prevent infinite while() loop in port startup")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/tty/serial/max310x.c | 27 +++++++++------------------
1 file changed, 9 insertions(+), 18 deletions(-)

diff --git a/drivers/tty/serial/max310x.c b/drivers/tty/serial/max310x.c
index bbf45c0626681..8d42c537ee5ea 100644
--- a/drivers/tty/serial/max310x.c
+++ b/drivers/tty/serial/max310x.c
@@ -15,8 +15,8 @@
#include <linux/device.h>
#include <linux/gpio/driver.h>
#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/serial_core.h>
#include <linux/serial.h>
@@ -271,7 +271,7 @@ struct max310x_one {
container_of(_port, struct max310x_one, port)

struct max310x_port {
- struct max310x_devtype *devtype;
+ const struct max310x_devtype *devtype;
struct regmap *regmap;
struct clk *clk;
#ifdef CONFIG_GPIOLIB
@@ -1262,7 +1262,7 @@ static int max310x_gpio_set_config(struct gpio_chip *chip, unsigned int offset,
}
#endif

-static int max310x_probe(struct device *dev, struct max310x_devtype *devtype,
+static int max310x_probe(struct device *dev, const struct max310x_devtype *devtype,
struct regmap *regmap, int irq)
{
int i, ret, fmin, fmax, freq;
@@ -1488,7 +1488,7 @@ static struct regmap_config regcfg = {
#ifdef CONFIG_SPI_MASTER
static int max310x_spi_probe(struct spi_device *spi)
{
- struct max310x_devtype *devtype;
+ const struct max310x_devtype *devtype;
struct regmap *regmap;
int ret;

@@ -1500,18 +1500,9 @@ static int max310x_spi_probe(struct spi_device *spi)
if (ret)
return ret;

- if (spi->dev.of_node) {
- const struct of_device_id *of_id =
- of_match_device(max310x_dt_ids, &spi->dev);
- if (!of_id)
- return -ENODEV;
-
- devtype = (struct max310x_devtype *)of_id->data;
- } else {
- const struct spi_device_id *id_entry = spi_get_device_id(spi);
-
- devtype = (struct max310x_devtype *)id_entry->driver_data;
- }
+ devtype = device_get_match_data(&spi->dev);
+ if (!devtype)
+ devtype = (struct max310x_devtype *)spi_get_device_id(spi)->driver_data;

regcfg.max_register = devtype->nr * 0x20 - 1;
regmap = devm_regmap_init_spi(spi, &regcfg);
@@ -1536,7 +1527,7 @@ MODULE_DEVICE_TABLE(spi, max310x_id_table);
static struct spi_driver max310x_spi_driver = {
.driver = {
.name = MAX310X_NAME,
- .of_match_table = of_match_ptr(max310x_dt_ids),
+ .of_match_table = max310x_dt_ids,
.pm = &max310x_pm_ops,
},
.probe = max310x_spi_probe,
--
2.43.0