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gluon/patches/openwrt/0084-mac80211-ath9k-enable-GPIO-buttons.patch

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mac80211: backport ath9k GPIO support
2016-05-29 09:58:33 +00:00
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Sun, 29 May 2016 13:38:45 +0200
Subject: mac80211: ath9k: enable GPIO buttons
Enable platform-defined GPIO button support for ath9k device.
Key poller is activated for attached platform buttons.
Requires ath9k GPIO chip access.
Signed-off-by: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl>
Backport of r48921
diff --git a/package/kernel/mac80211/patches/550-ath9k_enable_gpio_buttons.patch b/package/kernel/mac80211/patches/550-ath9k_enable_gpio_buttons.patch
new file mode 100644
index 0000000..e3a8cec
--- /dev/null
+++ b/package/kernel/mac80211/patches/550-ath9k_enable_gpio_buttons.patch
@@ -0,0 +1,169 @@
+From: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl>
+Subject: [PATCH v5 5/8] mac80211: ath9k: enable GPIO buttons
+
+Enable platform-defined GPIO button support for ath9k device.
+Key poller is activated for attached platform buttons.
+Requires ath9k GPIO chip access.
+
+Signed-off-by: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl>
+---
+ drivers/net/wireless/ath/ath9k/ath9k.h | 16 ++++++
+ drivers/net/wireless/ath/ath9k/gpio.c | 77 +++++++++++++++++++++++++++++++++
+ drivers/net/wireless/ath/ath9k/init.c | 2
+ include/linux/ath9k_platform.h | 4 +
+ 4 files changed, 99 insertions(+)
+
+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -825,6 +825,13 @@ int ath_create_gpio_led(struct ath_softc
+ void ath9k_register_gpio_chip(struct ath_softc *sc);
+ void ath9k_unregister_gpio_chip(struct ath_softc *sc);
+
++/******************/
++/* GPIO Buttons */
++/******************/
++
++void ath9k_init_buttons(struct ath_softc *sc);
++void ath9k_deinit_buttons(struct ath_softc *sc);
++
+ #else
+ static inline void ath_init_leds(struct ath_softc *sc)
+ {
+@@ -844,6 +851,14 @@ static inline void ath9k_register_gpio_c
+ static inline void ath9k_unregister_gpio_chip(struct ath_softc *sc)
+ {
+ }
++
++static inline void ath9k_init_buttons(struct ath_softc *sc)
++{
++}
++
++static inline void ath9k_deinit_buttons(struct ath_softc *sc)
++{
++}
+ #endif
+
+ /************************/
+@@ -1040,6 +1055,7 @@ struct ath_softc {
+ const char *led_default_trigger;
+ struct list_head leds;
+ struct ath9k_gpio_chip *gpiochip;
++ struct platform_device *btnpdev; /* gpio-keys-polled */
+ #endif
+
+ #ifdef CPTCFG_ATH9K_DEBUGFS
+--- a/drivers/net/wireless/ath/ath9k/gpio.c
++++ b/drivers/net/wireless/ath/ath9k/gpio.c
+@@ -24,6 +24,8 @@
+ #ifdef CPTCFG_MAC80211_LEDS
+
+ #include <asm-generic/gpio.h>
++#include <linux/platform_device.h>
++#include <linux/gpio_keys.h>
+
+ static void ath_led_brightness(struct led_classdev *led_cdev,
+ enum led_brightness brightness)
+@@ -159,7 +161,7 @@ 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);
+
+- if (!pdata)
++ if (!pdata || !pdata->leds || !pdata->num_leds)
+ return;
+
+ for (i = 0; i < pdata->num_leds; i++)
+@@ -307,6 +309,63 @@ void ath9k_unregister_gpio_chip(struct a
+ sc->gpiochip = NULL;
+ }
+
++/******************/
++/* GPIO Buttons */
++/******************/
++
++/* add GPIO buttons */
++void ath9k_init_buttons(struct ath_softc *sc)
++{
++ struct ath9k_platform_data *pdata = sc->dev->platform_data;
++ struct platform_device *pdev;
++ struct gpio_keys_platform_data gkpdata;
++ struct gpio_keys_button *bt;
++ int i;
++
++ if (!sc->gpiochip)
++ return;
++
++ if (!pdata || !pdata->btns || !pdata->num_btns)
++ return;
++
++ bt = devm_kmemdup(sc->dev, pdata->btns,
++ pdata->num_btns * sizeof(struct gpio_keys_button),
++ GFP_KERNEL);
++ if (!bt)
++ return;
++
++ for (i = 0; i < pdata->num_btns; i++) {
++ ath9k_hw_cfg_gpio_input(sc->sc_ah, pdata->btns[i].gpio);
++ bt[i].gpio = sc->gpiochip->gchip.base + pdata->btns[i].gpio;
++ }
++
++ memset(&gkpdata, 0, sizeof(struct gpio_keys_platform_data));
++ gkpdata.buttons = bt;
++ gkpdata.nbuttons = pdata->num_btns;
++ gkpdata.poll_interval = pdata->btn_poll_interval;
++
++ pdev = platform_device_register_data(sc->dev, "gpio-keys-polled",
++ PLATFORM_DEVID_AUTO, &gkpdata,
++ sizeof(gkpdata));
++ if (!IS_ERR_OR_NULL(pdev))
++ sc->btnpdev = pdev;
++ else {
++ sc->btnpdev = NULL;
++ devm_kfree(sc->dev, bt);
++ }
++}
++
++/* remove GPIO buttons */
++void ath9k_deinit_buttons(struct ath_softc *sc)
++{
++ if (!sc->gpiochip || !sc->btnpdev)
++ return;
++
++ platform_device_unregister(sc->btnpdev);
++
++ sc->btnpdev = NULL;
++}
++
+ #endif
+
+ /*******************/
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -977,6 +977,7 @@ int ath9k_init_device(u16 devid, struct
+
+ ath9k_register_gpio_chip(sc);
+ ath_init_leds(sc);
++ ath9k_init_buttons(sc);
+ ath_start_rfkill_poll(sc);
+
+ return 0;
+@@ -1022,6 +1023,7 @@ void ath9k_deinit_device(struct ath_soft
+ ath9k_ps_wakeup(sc);
+
+ wiphy_rfkill_stop_polling(sc->hw->wiphy);
++ ath9k_deinit_buttons(sc);
+ ath_deinit_leds(sc);
+ ath9k_unregister_gpio_chip(sc);
+
+--- a/include/linux/ath9k_platform.h
++++ b/include/linux/ath9k_platform.h
+@@ -46,6 +46,10 @@ struct ath9k_platform_data {
+ int num_leds;
+ const struct gpio_led *leds;
+ const char *led_name;
++
++ unsigned num_btns;
++ const struct gpio_keys_button *btns;
++ unsigned btn_poll_interval;
+ };
+
+ #endif /* _LINUX_ATH9K_PLATFORM_H */
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/dev-ap9x-pci.c b/target/linux/ar71xx/files/arch/mips/ath79/dev-ap9x-pci.c
index bf80d4d..20bb06e 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/dev-ap9x-pci.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/dev-ap9x-pci.c
@@ -93,6 +93,20 @@ __init void ap9x_pci_setup_wmac_leds(unsigned wmac, struct gpio_led *leds,
}
}
+__init void ap9x_pci_setup_wmac_btns(unsigned wmac,
+ struct gpio_keys_button *btns,
+ unsigned num_btns, unsigned poll_interval)
+{
+ struct ath9k_platform_data *ap9x_wmac_data;
+
+ if (!(ap9x_wmac_data = ap9x_pci_get_wmac_data(wmac)))
+ return;
+
+ ap9x_wmac_data->btns = btns;
+ ap9x_wmac_data->num_btns = num_btns;
+ ap9x_wmac_data->btn_poll_interval = poll_interval;
+}
+
static int ap91_pci_plat_dev_init(struct pci_dev *dev)
{
switch (PCI_SLOT(dev->devfn)) {
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/dev-ap9x-pci.h b/target/linux/ar71xx/files/arch/mips/ath79/dev-ap9x-pci.h
index dcfe541..d7c0185 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/dev-ap9x-pci.h
+++ b/target/linux/ar71xx/files/arch/mips/ath79/dev-ap9x-pci.h
@@ -12,6 +12,7 @@
#define _ATH79_DEV_AP9X_PCI_H
struct gpio_led;
+struct gpio_keys_button;
struct ath9k_platform_data;
#if defined(CONFIG_ATH79_DEV_AP9X_PCI)
@@ -20,6 +21,8 @@ void ap9x_pci_setup_wmac_gpio(unsigned wmac, u32 mask, u32 val);
void ap9x_pci_setup_wmac_leds(unsigned wmac, struct gpio_led *leds,
int num_leds);
void ap9x_pci_setup_wmac_led_name(unsigned wmac, const char *led_name);
+void ap9x_pci_setup_wmac_btns(unsigned wmac, struct gpio_keys_button *btns,
+ unsigned num_btns, unsigned poll_interval);
struct ath9k_platform_data *ap9x_pci_get_wmac_data(unsigned wmac);
void ap91_pci_init(u8 *cal_data, u8 *mac_addr);
@@ -36,6 +39,10 @@ static inline void ap9x_pci_setup_wmac_leds(unsigned wmac,
int num_leds) {}
static inline void ap9x_pci_setup_wmac_led_name(unsigned wmac,
const char *led_name) {}
+static inline void ap9x_pci_setup_wmac_btns(unsigned wmac,
+ struct gpio_keys_button *btns,
+ unsigned num_btns,
+ unsigned poll_interval) {}
static inline struct ath9k_platform_data *ap9x_pci_get_wmac_data(unsigned wmac)
{
return NULL;
diff --git a/target/linux/generic/files/include/linux/ath9k_platform.h b/target/linux/generic/files/include/linux/ath9k_platform.h
index 823e5ac..e543a64 100644
--- a/target/linux/generic/files/include/linux/ath9k_platform.h
+++ b/target/linux/generic/files/include/linux/ath9k_platform.h
@@ -46,6 +46,10 @@ struct ath9k_platform_data {
int num_leds;
const struct gpio_led *leds;
const char *led_name;
+
+ unsigned num_btns;
+ const struct gpio_keys_button *btns;
+ unsigned btn_poll_interval;
};
#endif /* _LINUX_ATH9K_PLATFORM_H */
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