mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-24 05:04:00 +08:00
84f669b4b8
Fix sparse warnings: drivers/platform/x86/pcengines-apuv2.c:80:27: warning: symbol 'gpios_led_table' was not declared. Should it be static? drivers/platform/x86/pcengines-apuv2.c:113:27: warning: symbol 'gpios_key_table' was not declared. Should it be static? Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Acked-By: Enrico Weigelt, metux IT consult <info@metux.net> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
261 lines
6.3 KiB
C
261 lines
6.3 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
|
|
/*
|
|
* PC-Engines APUv2/APUv3 board platform driver
|
|
* for gpio buttons and LEDs
|
|
*
|
|
* Copyright (C) 2018 metux IT consult
|
|
* Author: Enrico Weigelt <info@metux.net>
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/dmi.h>
|
|
#include <linux/err.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/leds.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/gpio_keys.h>
|
|
#include <linux/gpio/machine.h>
|
|
#include <linux/input.h>
|
|
#include <linux/platform_data/gpio/gpio-amd-fch.h>
|
|
|
|
/*
|
|
* NOTE: this driver only supports APUv2/3 - not APUv1, as this one
|
|
* has completely different register layouts
|
|
*/
|
|
|
|
/* register mappings */
|
|
#define APU2_GPIO_REG_LED1 AMD_FCH_GPIO_REG_GPIO57
|
|
#define APU2_GPIO_REG_LED2 AMD_FCH_GPIO_REG_GPIO58
|
|
#define APU2_GPIO_REG_LED3 AMD_FCH_GPIO_REG_GPIO59_DEVSLP1
|
|
#define APU2_GPIO_REG_MODESW AMD_FCH_GPIO_REG_GPIO32_GE1
|
|
#define APU2_GPIO_REG_SIMSWAP AMD_FCH_GPIO_REG_GPIO33_GE2
|
|
|
|
/* order in which the gpio lines are defined in the register list */
|
|
#define APU2_GPIO_LINE_LED1 0
|
|
#define APU2_GPIO_LINE_LED2 1
|
|
#define APU2_GPIO_LINE_LED3 2
|
|
#define APU2_GPIO_LINE_MODESW 3
|
|
#define APU2_GPIO_LINE_SIMSWAP 4
|
|
|
|
/* gpio device */
|
|
|
|
static int apu2_gpio_regs[] = {
|
|
[APU2_GPIO_LINE_LED1] = APU2_GPIO_REG_LED1,
|
|
[APU2_GPIO_LINE_LED2] = APU2_GPIO_REG_LED2,
|
|
[APU2_GPIO_LINE_LED3] = APU2_GPIO_REG_LED3,
|
|
[APU2_GPIO_LINE_MODESW] = APU2_GPIO_REG_MODESW,
|
|
[APU2_GPIO_LINE_SIMSWAP] = APU2_GPIO_REG_SIMSWAP,
|
|
};
|
|
|
|
static const char * const apu2_gpio_names[] = {
|
|
[APU2_GPIO_LINE_LED1] = "front-led1",
|
|
[APU2_GPIO_LINE_LED2] = "front-led2",
|
|
[APU2_GPIO_LINE_LED3] = "front-led3",
|
|
[APU2_GPIO_LINE_MODESW] = "front-button",
|
|
[APU2_GPIO_LINE_SIMSWAP] = "simswap",
|
|
};
|
|
|
|
static const struct amd_fch_gpio_pdata board_apu2 = {
|
|
.gpio_num = ARRAY_SIZE(apu2_gpio_regs),
|
|
.gpio_reg = apu2_gpio_regs,
|
|
.gpio_names = apu2_gpio_names,
|
|
};
|
|
|
|
/* gpio leds device */
|
|
|
|
static const struct gpio_led apu2_leds[] = {
|
|
{ .name = "apu:green:1" },
|
|
{ .name = "apu:green:2" },
|
|
{ .name = "apu:green:3" }
|
|
};
|
|
|
|
static const struct gpio_led_platform_data apu2_leds_pdata = {
|
|
.num_leds = ARRAY_SIZE(apu2_leds),
|
|
.leds = apu2_leds,
|
|
};
|
|
|
|
static struct gpiod_lookup_table gpios_led_table = {
|
|
.dev_id = "leds-gpio",
|
|
.table = {
|
|
GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED1,
|
|
NULL, 0, GPIO_ACTIVE_LOW),
|
|
GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED2,
|
|
NULL, 1, GPIO_ACTIVE_LOW),
|
|
GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED3,
|
|
NULL, 2, GPIO_ACTIVE_LOW),
|
|
}
|
|
};
|
|
|
|
/* gpio keyboard device */
|
|
|
|
static struct gpio_keys_button apu2_keys_buttons[] = {
|
|
{
|
|
.code = KEY_SETUP,
|
|
.active_low = 1,
|
|
.desc = "front button",
|
|
.type = EV_KEY,
|
|
.debounce_interval = 10,
|
|
.value = 1,
|
|
},
|
|
};
|
|
|
|
static const struct gpio_keys_platform_data apu2_keys_pdata = {
|
|
.buttons = apu2_keys_buttons,
|
|
.nbuttons = ARRAY_SIZE(apu2_keys_buttons),
|
|
.poll_interval = 100,
|
|
.rep = 0,
|
|
.name = "apu2-keys",
|
|
};
|
|
|
|
static struct gpiod_lookup_table gpios_key_table = {
|
|
.dev_id = "gpio-keys-polled",
|
|
.table = {
|
|
GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_MODESW,
|
|
NULL, 0, GPIO_ACTIVE_LOW),
|
|
}
|
|
};
|
|
|
|
/* board setup */
|
|
|
|
/* note: matching works on string prefix, so "apu2" must come before "apu" */
|
|
static const struct dmi_system_id apu_gpio_dmi_table[] __initconst = {
|
|
|
|
/* APU2 w/ legacy bios < 4.0.8 */
|
|
{
|
|
.ident = "apu2",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "APU2")
|
|
},
|
|
.driver_data = (void *)&board_apu2,
|
|
},
|
|
/* APU2 w/ legacy bios >= 4.0.8 */
|
|
{
|
|
.ident = "apu2",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "apu2")
|
|
},
|
|
.driver_data = (void *)&board_apu2,
|
|
},
|
|
/* APU2 w/ maainline bios */
|
|
{
|
|
.ident = "apu2",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu2")
|
|
},
|
|
.driver_data = (void *)&board_apu2,
|
|
},
|
|
|
|
/* APU3 w/ legacy bios < 4.0.8 */
|
|
{
|
|
.ident = "apu3",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "APU3")
|
|
},
|
|
.driver_data = (void *)&board_apu2,
|
|
},
|
|
/* APU3 w/ legacy bios >= 4.0.8 */
|
|
{
|
|
.ident = "apu3",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "apu3")
|
|
},
|
|
.driver_data = (void *)&board_apu2,
|
|
},
|
|
/* APU3 w/ mainline bios */
|
|
{
|
|
.ident = "apu3",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu3")
|
|
},
|
|
.driver_data = (void *)&board_apu2,
|
|
},
|
|
{}
|
|
};
|
|
|
|
static struct platform_device *apu_gpio_pdev;
|
|
static struct platform_device *apu_leds_pdev;
|
|
static struct platform_device *apu_keys_pdev;
|
|
|
|
static struct platform_device * __init apu_create_pdev(
|
|
const char *name,
|
|
const void *pdata,
|
|
size_t sz)
|
|
{
|
|
struct platform_device *pdev;
|
|
|
|
pdev = platform_device_register_resndata(NULL,
|
|
name,
|
|
PLATFORM_DEVID_NONE,
|
|
NULL,
|
|
0,
|
|
pdata,
|
|
sz);
|
|
|
|
if (IS_ERR(pdev))
|
|
pr_err("failed registering %s: %ld\n", name, PTR_ERR(pdev));
|
|
|
|
return pdev;
|
|
}
|
|
|
|
static int __init apu_board_init(void)
|
|
{
|
|
const struct dmi_system_id *id;
|
|
|
|
id = dmi_first_match(apu_gpio_dmi_table);
|
|
if (!id) {
|
|
pr_err("failed to detect apu board via dmi\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
gpiod_add_lookup_table(&gpios_led_table);
|
|
gpiod_add_lookup_table(&gpios_key_table);
|
|
|
|
apu_gpio_pdev = apu_create_pdev(
|
|
AMD_FCH_GPIO_DRIVER_NAME,
|
|
id->driver_data,
|
|
sizeof(struct amd_fch_gpio_pdata));
|
|
|
|
apu_leds_pdev = apu_create_pdev(
|
|
"leds-gpio",
|
|
&apu2_leds_pdata,
|
|
sizeof(apu2_leds_pdata));
|
|
|
|
apu_keys_pdev = apu_create_pdev(
|
|
"gpio-keys-polled",
|
|
&apu2_keys_pdata,
|
|
sizeof(apu2_keys_pdata));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit apu_board_exit(void)
|
|
{
|
|
gpiod_remove_lookup_table(&gpios_led_table);
|
|
gpiod_remove_lookup_table(&gpios_key_table);
|
|
|
|
platform_device_unregister(apu_keys_pdev);
|
|
platform_device_unregister(apu_leds_pdev);
|
|
platform_device_unregister(apu_gpio_pdev);
|
|
}
|
|
|
|
module_init(apu_board_init);
|
|
module_exit(apu_board_exit);
|
|
|
|
MODULE_AUTHOR("Enrico Weigelt, metux IT consult <info@metux.net>");
|
|
MODULE_DESCRIPTION("PC Engines APUv2/APUv3 board GPIO/LED/keys driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DEVICE_TABLE(dmi, apu_gpio_dmi_table);
|
|
MODULE_ALIAS("platform:pcengines-apuv2");
|
|
MODULE_SOFTDEP("pre: platform:" AMD_FCH_GPIO_DRIVER_NAME);
|
|
MODULE_SOFTDEP("pre: platform:leds-gpio");
|
|
MODULE_SOFTDEP("pre: platform:gpio_keys_polled");
|