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platform/x86: int3472/discrete: Move GPIO request to skl_int3472_register_clock()

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Move the requesting of the clk-enable GPIO to skl_int3472_register_clock()
(and move the gpiod_put to unregister).

This mirrors the GPIO handling in skl_int3472_register_regulator() and
allows removing skl_int3472_map_gpio_to_clk() from discrete.c.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Link: https://lore.kernel.org/r/20230127203729.10205-5-hdegoede@redhat.com
This commit is contained in:
Hans de Goede 2023-01-27 21:37:28 +01:00
parent 5ae20a8050
commit 8cf0e541c1
3 changed files with 30 additions and 31 deletions
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28
drivers/platform/x86/intel/int3472/clk_and_regulator.c
View File

@ -86,18 +86,34 @@ static const struct clk_ops skl_int3472_clock_ops = {
.recalc_rate = skl_int3472_clk_recalc_rate,
};
int skl_int3472_register_clock(struct int3472_discrete_device *int3472)
int skl_int3472_register_clock(struct int3472_discrete_device *int3472,
struct acpi_resource_gpio *agpio)
{
char *path = agpio->resource_source.string_ptr;
struct clk_init_data init = {
.ops = &skl_int3472_clock_ops,
.flags = CLK_GET_RATE_NOCACHE,
};
int ret;
if (int3472->clock.cl)
return -EBUSY;
int3472->clock.ena_gpio = acpi_get_and_request_gpiod(path, agpio->pin_table[0],
"int3472,clk-enable");
if (IS_ERR(int3472->clock.ena_gpio))
return dev_err_probe(int3472->dev, PTR_ERR(int3472->clock.ena_gpio),
"getting clk-enable GPIO\n");
/* Ensure the pin is in output mode and non-active state */
gpiod_direction_output(int3472->clock.ena_gpio, 0);
init.name = kasprintf(GFP_KERNEL, "%s-clk",
acpi_dev_name(int3472->adev));
if (!init.name)
return -ENOMEM;
if (!init.name) {
ret = -ENOMEM;
goto out_put_gpio;
}
int3472->clock.frequency = skl_int3472_get_clk_frequency(int3472);
@ -123,14 +139,20 @@ int skl_int3472_register_clock(struct int3472_discrete_device *int3472)
clk_unregister(int3472->clock.clk);
out_free_init_name:
kfree(init.name);
out_put_gpio:
gpiod_put(int3472->clock.ena_gpio);
return ret;
}
void skl_int3472_unregister_clock(struct int3472_discrete_device *int3472)
{
if (!int3472->clock.cl)
return;
clkdev_drop(int3472->clock.cl);
clk_unregister(int3472->clock.clk);
gpiod_put(int3472->clock.ena_gpio);
}
int skl_int3472_register_regulator(struct int3472_discrete_device *int3472,

3
drivers/platform/x86/intel/int3472/common.h
View File

@ -121,7 +121,8 @@ int skl_int3472_get_sensor_adev_and_name(struct device *dev,
struct acpi_device **sensor_adev_ret,
const char **name_ret);
int skl_int3472_register_clock(struct int3472_discrete_device *int3472);
int skl_int3472_register_clock(struct int3472_discrete_device *int3472,
struct acpi_resource_gpio *agpio);
void skl_int3472_unregister_clock(struct int3472_discrete_device *int3472);
int skl_int3472_register_regulator(struct int3472_discrete_device *int3472,

30
drivers/platform/x86/intel/int3472/discrete.c
View File

@ -2,8 +2,6 @@
/* Author: Dan Scally <djrscally@gmail.com> */
#include <linux/acpi.h>
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/gpio/machine.h>
@ -154,24 +152,6 @@ static int skl_int3472_map_gpio_to_sensor(struct int3472_discrete_device *int347
return 0;
}
static int skl_int3472_map_gpio_to_clk(struct int3472_discrete_device *int3472,
struct acpi_resource_gpio *agpio)
{
char *path = agpio->resource_source.string_ptr;
u16 pin = agpio->pin_table[0];
struct gpio_desc *gpio;
gpio = acpi_get_and_request_gpiod(path, pin, "int3472,clk-enable");
if (IS_ERR(gpio))
return (PTR_ERR(gpio));
int3472->clock.ena_gpio = gpio;
/* Ensure the pin is in output mode and non-active state */
gpiod_direction_output(int3472->clock.ena_gpio, 0);
return skl_int3472_register_clock(int3472);
}
static void int3472_get_func_and_polarity(u8 type, const char **func, u32 *polarity)
{
switch (type) {
@ -277,9 +257,9 @@ static int skl_int3472_handle_gpio_resources(struct acpi_resource *ares,
break;
case INT3472_GPIO_TYPE_CLK_ENABLE:
ret = skl_int3472_map_gpio_to_clk(int3472, agpio);
ret = skl_int3472_register_clock(int3472, agpio);
if (ret)
err_msg = "Failed to map GPIO to clock\n";
err_msg = "Failed to register clock\n";
break;
case INT3472_GPIO_TYPE_PRIVACY_LED:
@ -342,11 +322,7 @@ static int skl_int3472_discrete_remove(struct platform_device *pdev)
gpiod_remove_lookup_table(&int3472->gpios);
if (int3472->clock.cl)
skl_int3472_unregister_clock(int3472);
gpiod_put(int3472->clock.ena_gpio);
skl_int3472_unregister_clock(int3472);
skl_int3472_unregister_pled(int3472);
skl_int3472_unregister_regulator(int3472);