iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

leds: apu: drop superseeded apu2/3 led support

Browse Source 
This driver only supports gpio-attached LEDs on apu1/2/3 boards,
but neither gpio's themselves, nor other gpio-attached devices
(eg. front button).

For apu2+ a newer, more complete driver exists, based on a generic
driver for the AMD SOCs gpio-controller, supporting LEDs as well
other devices. Therefore these boards don't need legacy support
from this driver anymore.

Both drivers claim the same device, so only one driver may exist
in a system, putting distros in the position to decide between
either apu2+ keys or apu1 led support.

Therefore drop the apu2+ led support from the old driver, solve
the conflict and reduce unnecessary code.

Signed-off-by: Enrico Weigelt <info@metux.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
This commit is contained in:
Enrico Weigelt 2019-07-15 16:57:28 +02:00 committed by Jacek Anaszewski
parent 967ea03cc3
commit 0344e6166b
2 changed files with 10 additions and 119 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/leds/Kconfig
View File

@ -74,9 +74,12 @@ config LEDS_APU
depends on LEDS_CLASS
depends on X86 && DMI
help
This driver makes the PC Engines APU/APU2/APU3 front panel LEDs
This driver makes the PC Engines APU1 front panel LEDs
accessible from userspace programs through the LED subsystem.
If you're looking for APU2/3, use the pcengines-apu2 driver.
(symbol CONFIG_PCENGINES_APU2)
To compile this driver as a module, choose M here: the
module will be called leds-apu.

124
drivers/leds/leds-apu.c
View File

@ -47,12 +47,6 @@
#define APU1_NUM_GPIO 3
#define APU1_IOSIZE sizeof(u8)
#define APU2_FCH_ACPI_MMIO_BASE 0xFED80000
#define APU2_FCH_GPIO_BASE (APU2_FCH_ACPI_MMIO_BASE + 0x1500)
#define APU2_GPIO_BIT_WRITE 22
#define APU2_APU2_NUM_GPIO 4
#define APU2_IOSIZE sizeof(u32)
/* LED access parameters */
struct apu_param {
void __iomem *addr; /* for ioread/iowrite */
@ -75,7 +69,6 @@ struct apu_led_profile {
/* Supported platform types */
enum apu_led_platform_types {
APU1_LED_PLATFORM,
APU2_LED_PLATFORM,
};
struct apu_led_pdata {
@ -96,19 +89,6 @@ static const struct apu_led_profile apu1_led_profile[] = {
{ "apu:green:3", LED_OFF, APU1_FCH_GPIO_BASE + 2 * APU1_IOSIZE },
};
static const struct apu_led_profile apu2_led_profile[] = {
{ "apu2:green:1", LED_ON, APU2_FCH_GPIO_BASE + 68 * APU2_IOSIZE },
{ "apu2:green:2", LED_OFF, APU2_FCH_GPIO_BASE + 69 * APU2_IOSIZE },
{ "apu2:green:3", LED_OFF, APU2_FCH_GPIO_BASE + 70 * APU2_IOSIZE },
};
/* Same as apu2_led_profile, but with "3" in the LED names. */
static const struct apu_led_profile apu3_led_profile[] = {
{ "apu3:green:1", LED_ON, APU2_FCH_GPIO_BASE + 68 * APU2_IOSIZE },
{ "apu3:green:2", LED_OFF, APU2_FCH_GPIO_BASE + 69 * APU2_IOSIZE },
{ "apu3:green:3", LED_OFF, APU2_FCH_GPIO_BASE + 70 * APU2_IOSIZE },
};
static const struct dmi_system_id apu_led_dmi_table[] __initconst = {
{
.ident = "apu",
@ -117,54 +97,6 @@ static const struct dmi_system_id apu_led_dmi_table[] __initconst = {
DMI_MATCH(DMI_PRODUCT_NAME, "APU")
}
},
/* PC Engines APU2 with "Legacy" bios < 4.0.8 */
{
.ident = "apu2",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
DMI_MATCH(DMI_BOARD_NAME, "APU2")
}
},
/* PC Engines APU2 with "Legacy" bios >= 4.0.8 */
{
.ident = "apu2",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
DMI_MATCH(DMI_BOARD_NAME, "apu2")
}
},
/* PC Engines APU2 with "Mainline" bios */
{
.ident = "apu2",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu2")
}
},
/* PC Engines APU3 with "Legacy" bios < 4.0.8 */
{
.ident = "apu3",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
DMI_MATCH(DMI_BOARD_NAME, "APU3")
}
},
/* PC Engines APU3 with "Legacy" bios >= 4.0.8 */
{
.ident = "apu3",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
DMI_MATCH(DMI_BOARD_NAME, "apu3")
}
},
/* PC Engines APU2 with "Mainline" bios */
{
.ident = "apu3",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu3")
}
},
{}
};
MODULE_DEVICE_TABLE(dmi, apu_led_dmi_table);
@ -178,25 +110,6 @@ static void apu1_led_brightness_set(struct led_classdev *led, enum led_brightnes
spin_unlock(&apu_led->lock);
}
static void apu2_led_brightness_set(struct led_classdev *led, enum led_brightness value)
{
struct apu_led_priv *pled = cdev_to_priv(led);
u32 value_new;
spin_lock(&apu_led->lock);
value_new = ioread32(pled->param.addr);
if (value)
value_new &= ~BIT(APU2_GPIO_BIT_WRITE);
else
value_new |= BIT(APU2_GPIO_BIT_WRITE);
iowrite32(value_new, pled->param.addr);
spin_unlock(&apu_led->lock);
}
static int apu_led_config(struct device *dev, struct apu_led_pdata *apuld)
{
int i;
@ -219,8 +132,6 @@ static int apu_led_config(struct device *dev, struct apu_led_pdata *apuld)
led_cdev->flags = LED_CORE_SUSPENDRESUME;
if (apu_led->platform == APU1_LED_PLATFORM)
led_cdev->brightness_set = apu1_led_brightness_set;
else if (apu_led->platform == APU2_LED_PLATFORM)
led_cdev->brightness_set = apu2_led_brightness_set;
pled->param.addr = devm_ioremap(dev,
apu_led->profile[i].offset, apu_led->iosize);
@ -254,27 +165,10 @@ static int __init apu_led_probe(struct platform_device *pdev)
apu_led->pdev = pdev;
if (dmi_match(DMI_PRODUCT_NAME, "APU")) {
apu_led->profile = apu1_led_profile;
apu_led->platform = APU1_LED_PLATFORM;
apu_led->num_led_instances = ARRAY_SIZE(apu1_led_profile);
apu_led->iosize = APU1_IOSIZE;
} else if (dmi_match(DMI_BOARD_NAME, "APU2") ||
dmi_match(DMI_BOARD_NAME, "apu2") ||
dmi_match(DMI_BOARD_NAME, "PC Engines apu2")) {
apu_led->profile = apu2_led_profile;
apu_led->platform = APU2_LED_PLATFORM;
apu_led->num_led_instances = ARRAY_SIZE(apu2_led_profile);
apu_led->iosize = APU2_IOSIZE;
} else if (dmi_match(DMI_BOARD_NAME, "APU3") ||
dmi_match(DMI_BOARD_NAME, "apu3") ||
dmi_match(DMI_BOARD_NAME, "PC Engines apu3")) {
apu_led->profile = apu3_led_profile;
/* Otherwise identical to APU2. */
apu_led->platform = APU2_LED_PLATFORM;
apu_led->num_led_instances = ARRAY_SIZE(apu3_led_profile);
apu_led->iosize = APU2_IOSIZE;
}
apu_led->profile = apu1_led_profile;
apu_led->platform = APU1_LED_PLATFORM;
apu_led->num_led_instances = ARRAY_SIZE(apu1_led_profile);
apu_led->iosize = APU1_IOSIZE;
spin_lock_init(&apu_led->lock);
return apu_led_config(&pdev->dev, apu_led);
@ -295,13 +189,7 @@ static int __init apu_led_init(void)
pr_err("No PC Engines board detected\n");
return -ENODEV;
}
if (!(dmi_match(DMI_PRODUCT_NAME, "APU") ||
dmi_match(DMI_PRODUCT_NAME, "APU2") ||
dmi_match(DMI_PRODUCT_NAME, "apu2") ||
dmi_match(DMI_PRODUCT_NAME, "PC Engines apu2") ||
dmi_match(DMI_PRODUCT_NAME, "APU3") ||
dmi_match(DMI_PRODUCT_NAME, "apu3") ||
dmi_match(DMI_PRODUCT_NAME, "PC Engines apu3"))) {
if (!(dmi_match(DMI_PRODUCT_NAME, "APU"))) {
pr_err("Unknown PC Engines board: %s\n",
dmi_get_system_info(DMI_PRODUCT_NAME));
return -ENODEV;
@ -337,6 +225,6 @@ module_init(apu_led_init);
module_exit(apu_led_exit);
MODULE_AUTHOR("Alan Mizrahi");
MODULE_DESCRIPTION("PC Engines APU family LED driver");
MODULE_DESCRIPTION("PC Engines APU1 front LED driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:leds_apu");