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path: root/drivers/leds/leds-apu.c
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Diffstat (limited to 'drivers/leds/leds-apu.c')
-rw-r--r--drivers/leds/leds-apu.c157
1 files changed, 14 insertions, 143 deletions
diff --git a/drivers/leds/leds-apu.c b/drivers/leds/leds-apu.c
index 8d42e46e2de3..7fd557aceff6 100644
--- a/drivers/leds/leds-apu.c
+++ b/drivers/leds/leds-apu.c
@@ -31,6 +31,8 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/dmi.h>
#include <linux/err.h>
#include <linux/init.h>
@@ -47,12 +49,6 @@
#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 */
@@ -72,19 +68,9 @@ struct apu_led_profile {
unsigned long offset; /* for devm_ioremap */
};
-/* Supported platform types */
-enum apu_led_platform_types {
- APU1_LED_PLATFORM,
- APU2_LED_PLATFORM,
-};
-
struct apu_led_pdata {
struct platform_device *pdev;
struct apu_led_priv *pled;
- const struct apu_led_profile *profile;
- enum apu_led_platform_types platform;
- int num_led_instances;
- int iosize; /* for devm_ioremap() */
spinlock_t lock;
};
@@ -96,19 +82,6 @@ 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 +90,6 @@ 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);
@@ -178,52 +103,30 @@ 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;
int err;
apu_led->pled = devm_kcalloc(dev,
- apu_led->num_led_instances, sizeof(struct apu_led_priv),
+ ARRAY_SIZE(apu1_led_profile), sizeof(struct apu_led_priv),
GFP_KERNEL);
if (!apu_led->pled)
return -ENOMEM;
- for (i = 0; i < apu_led->num_led_instances; i++) {
+ for (i = 0; i < ARRAY_SIZE(apu1_led_profile); i++) {
struct apu_led_priv *pled = &apu_led->pled[i];
struct led_classdev *led_cdev = &pled->cdev;
- led_cdev->name = apu_led->profile[i].name;
- led_cdev->brightness = apu_led->profile[i].brightness;
+ led_cdev->name = apu1_led_profile[i].name;
+ led_cdev->brightness = apu1_led_profile[i].brightness;
led_cdev->max_brightness = 1;
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;
+ led_cdev->brightness_set = apu1_led_brightness_set;
pled->param.addr = devm_ioremap(dev,
- apu_led->profile[i].offset, apu_led->iosize);
+ apu1_led_profile[i].offset, APU1_IOSIZE);
if (!pled->param.addr) {
err = -ENOMEM;
goto error;
@@ -233,7 +136,7 @@ static int apu_led_config(struct device *dev, struct apu_led_pdata *apuld)
if (err)
goto error;
- led_cdev->brightness_set(led_cdev, apu_led->profile[i].brightness);
+ apu1_led_brightness_set(led_cdev, apu1_led_profile[i].brightness);
}
return 0;
@@ -254,28 +157,6 @@ 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;
- }
-
spin_lock_init(&apu_led->lock);
return apu_led_config(&pdev->dev, apu_led);
}
@@ -291,19 +172,9 @@ static int __init apu_led_init(void)
struct platform_device *pdev;
int err;
- if (!dmi_match(DMI_SYS_VENDOR, "PC Engines")) {
- 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"))) {
- pr_err("Unknown PC Engines board: %s\n",
- dmi_get_system_info(DMI_PRODUCT_NAME));
+ if (!(dmi_match(DMI_SYS_VENDOR, "PC Engines") &&
+ dmi_match(DMI_PRODUCT_NAME, "APU"))) {
+ pr_err("No PC Engines APUv1 board detected. For APUv2,3 support, enable CONFIG_PCENGINES_APU2\n");
return -ENODEV;
}
@@ -326,7 +197,7 @@ static void __exit apu_led_exit(void)
{
int i;
- for (i = 0; i < apu_led->num_led_instances; i++)
+ for (i = 0; i < ARRAY_SIZE(apu1_led_profile); i++)
led_classdev_unregister(&apu_led->pled[i].cdev);
platform_device_unregister(apu_led->pdev);
@@ -337,6 +208,6 @@ 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");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.