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ath9k: register GPIO chip for OF targets

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This partitialy reverts commit f506de2cdaf9.

Registering the GPIO chip without a parent device completely breaks the
ath9k GPIOs for device tree targets.

As long as boards using the devicetree don't have the gpio-controller
property set for the ath9k node, the unloading of the driver works as
expected.

Register the GPIO chip with the ath9k device as parent only for OF
targets to find a trade-off between the needs of driver developers and
the broken LEDs and buttons seen by users.

Fixes: FS#2098

Signed-off-by: Mathias Kresin <dev@kresin.me>
(cherry picked from commit d35f2a5565fc51fb277f72a8565c871ce1785588)
This commit is contained in:
Mathias Kresin 2018-12-07 09:42:09 +01:00
parent 9b14c7d3d1
commit d997712c71
2 changed files with 19 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
package/kernel/mac80211/patches/548-ath9k_enable_gpio_chip.patch
View File

@ -45,7 +45,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
#ifdef CPTCFG_ATH9K_DEBUGFS
--- a/drivers/net/wireless/ath/ath9k/gpio.c
+++ b/drivers/net/wireless/ath/ath9k/gpio.c
@@ -16,13 +16,130 @@
@@ -16,13 +16,139 @@
#include "ath9k.h"
#include <linux/ath9k_platform.h>
@ -126,7 +126,13 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
+ gc->sc = sc;
+ snprintf(gc->label, sizeof(gc->label), "ath9k-%s",
+ wiphy_name(sc->hw->wiphy));
+
+#ifdef CONFIG_OF
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,5,0)
+ gc->gchip.parent = sc->dev;
+#else
+ gc->gchip.dev = sc->dev;
+#endif
+#endif
+ gc->gchip.label = gc->label;
+ gc->gchip.base = -1; /* determine base automatically */
+ gc->gchip.ngpio = ah->caps.num_gpio_pins;
@ -141,6 +147,9 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
+ return;
+ }
+
+#ifdef CONFIG_OF
+ gc->gchip.owner = NULL;
+#endif
+ sc->gpiochip = gc;
+}
+
@ -178,7 +187,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
static void ath_fill_led_pin(struct ath_softc *sc)
{
struct ath_hw *ah = sc->sc_ah;
@@ -80,6 +197,12 @@ static int ath_add_led(struct ath_softc
@@ -80,6 +206,12 @@ static int ath_add_led(struct ath_softc
else
ath9k_hw_set_gpio(sc->sc_ah, gpio->gpio, gpio->active_low);
@ -191,7 +200,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
return 0;
}
@@ -136,17 +259,24 @@ void ath_deinit_leds(struct ath_softc *s
@@ -136,17 +268,24 @@ void ath_deinit_leds(struct ath_softc *s
while (!list_empty(&sc->leds)) {
led = list_first_entry(&sc->leds, struct ath_led, list);
@ -216,7 +225,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
char led_name[32];
const char *trigger;
int i;
@@ -156,6 +286,15 @@ void ath_init_leds(struct ath_softc *sc)
@@ -156,6 +295,15 @@ void ath_init_leds(struct ath_softc *sc)
if (AR_SREV_9100(sc->sc_ah))
return;
@ -232,7 +241,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
ath_fill_led_pin(sc);
if (pdata && pdata->leds && pdata->num_leds)
@@ -180,6 +319,7 @@ void ath_init_leds(struct ath_softc *sc)
@@ -180,6 +328,7 @@ void ath_init_leds(struct ath_softc *sc)
ath_create_gpio_led(sc, sc->sc_ah->led_pin, led_name, trigger,
!sc->sc_ah->config.led_active_high);
}

8
package/kernel/mac80211/patches/549-ath9k_enable_gpio_buttons.patch
View File

@ -29,7 +29,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
#ifdef CPTCFG_MAC80211_LEDS
@@ -124,6 +126,67 @@ static void ath9k_unregister_gpio_chip(s
@@ -133,6 +135,67 @@ static void ath9k_unregister_gpio_chip(s
sc->gpiochip = NULL;
}
@ -97,7 +97,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
#else /* CONFIG_GPIOLIB */
static inline void ath9k_register_gpio_chip(struct ath_softc *sc)
@@ -134,6 +197,14 @@ static inline void ath9k_unregister_gpio
@@ -143,6 +206,14 @@ static inline void ath9k_unregister_gpio
{
}
@ -112,7 +112,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
#endif /* CONFIG_GPIOLIB */
/********************************/
@@ -257,6 +328,7 @@ void ath_deinit_leds(struct ath_softc *s
@@ -266,6 +337,7 @@ void ath_deinit_leds(struct ath_softc *s
{
struct ath_led *led;
@ -120,7 +120,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
while (!list_empty(&sc->leds)) {
led = list_first_entry(&sc->leds, struct ath_led, list);
#ifdef CONFIG_GPIOLIB
@@ -296,6 +368,7 @@ void ath_init_leds(struct ath_softc *sc)
@@ -305,6 +377,7 @@ void ath_init_leds(struct ath_softc *sc)
}
ath_fill_led_pin(sc);