From: Michal Cieslakiewicz <michal.cieslakiew...@wp.pl>
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.cieslakiew...@wp.pl>
---
.../patches/550-ath9k_enable_gpio_buttons.patch | 164 +++++++++++++++++++++
.../ar71xx/files/arch/mips/ath79/dev-ap9x-pci.c | 18 +++
.../ar71xx/files/arch/mips/ath79/dev-ap9x-pci.h | 7 +
.../generic/files/include/linux/ath9k_platform.h | 4 +
4 files changed, 193 insertions(+)
create mode 100644
package/kernel/mac80211/patches/550-ath9k_enable_gpio_buttons.patch
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..0c8af26
--- /dev/null
+++ b/package/kernel/mac80211/patches/550-ath9k_enable_gpio_buttons.patch
@@ -0,0 +1,164 @@
+--- 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)
+ {
+@@ -843,6 +850,13 @@ static inline void ath9k_register_gpio_c
+ static inline void ath9k_unregister_gpio_chip(struct ath_softc *sc)
+ {
+ }
++
++void ath9k_init_buttons(struct ath_softc *sc)
++{
++}
++void ath9k_deinit_buttons(struct ath_softc *sc)
++{
++}
+ #endif
+
+ /************************/
+@@ -1039,6 +1053,7 @@ 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)
+@@ -312,6 +314,83 @@ 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;
++
++ bt = kmemdup(pdata->btns,
++ pdata->num_btns * sizeof(struct gpio_keys_button),
++ GFP_KERNEL);
++
++ if (!bt)
++ return;
++
++ pdev = platform_device_alloc("gpio-keys-polled", PLATFORM_DEVID_AUTO);
++
++ if (!pdev)
++ goto err_bt_free;
++
++ 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;
++
++ if (platform_device_add_data(pdev, &gkpdata, sizeof(gkpdata)))
++ goto err_pdev_put;
++
++ if (platform_device_add(pdev))
++ goto err_pdev_put;
++
++ sc->btnpdev = pdev;
++
++ return;
++
++err_pdev_put:
++ platform_device_put(pdev);
++
++err_bt_free:
++ kfree(bt);
++}
++
++/* remove GPIO buttons */
++void ath9k_deinit_buttons(struct ath_softc *sc)
++{
++ struct gpio_keys_platform_data *gkpdata;
++ struct gpio_keys_button *bt = NULL;
++
++ if (!sc->gpiochip || !sc->btnpdev)
++ return;
++
++ gkpdata = sc->btnpdev->dev.platform_data;
++ if (gkpdata)
++ bt = gkpdata->buttons;
++
++ platform_device_del(sc->btnpdev);
++ platform_device_put(sc->btnpdev);
++
++ sc->btnpdev = NULL;
++
++ if (bt)
++ kfree(bt);
++}
++
+ #endif
+
+ /*******************/
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -981,6 +981,7 @@ 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;
+@@ -1026,6 +1027,7 @@ 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..51f361e 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 +93,24 @@ __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 (wmac == 0)
+ ap9x_wmac_data = &ap9x_wmac0_data;
+ else if (wmac == 1)
+ ap9x_wmac_data = &ap9x_wmac1_data;
+ else
+ 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 */
--
2.6.4
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