#include "bcm47xx_private.h" #include #include #include #include #include /************************************************** * Database **************************************************/ #define BCM47XX_GPIO_KEY(_gpio, _code) \ { \ .code = _code, \ .gpio = _gpio, \ .active_low = 1, \ } /* Asus */ static const struct gpio_keys_button bcm47xx_buttons_asus_rtn12[] __initconst = { BCM47XX_GPIO_KEY(0, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(1, KEY_RESTART), BCM47XX_GPIO_KEY(4, BTN_0), /* Router mode */ BCM47XX_GPIO_KEY(5, BTN_1), /* Repeater mode */ BCM47XX_GPIO_KEY(6, BTN_2), /* AP mode */ }; static const struct gpio_keys_button bcm47xx_buttons_asus_rtn16[] __initconst = { BCM47XX_GPIO_KEY(6, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(8, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_asus_rtn66u[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(9, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_asus_wl300g[] __initconst = { BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_asus_wl320ge[] __initconst = { BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_asus_wl330ge[] __initconst = { BCM47XX_GPIO_KEY(2, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_asus_wl500g[] __initconst = { BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_asus_wl500gd[] __initconst = { BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_asus_wl500gpv1[] __initconst = { BCM47XX_GPIO_KEY(0, KEY_RESTART), BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), }; static const struct gpio_keys_button bcm47xx_buttons_asus_wl500gpv2[] __initconst = { BCM47XX_GPIO_KEY(2, KEY_RESTART), BCM47XX_GPIO_KEY(3, KEY_WPS_BUTTON), }; static const struct gpio_keys_button bcm47xx_buttons_asus_wl500w[] __initconst = { BCM47XX_GPIO_KEY(6, KEY_RESTART), BCM47XX_GPIO_KEY(7, KEY_WPS_BUTTON), }; static const struct gpio_keys_button bcm47xx_buttons_asus_wl520gc[] __initconst = { BCM47XX_GPIO_KEY(2, KEY_RESTART), BCM47XX_GPIO_KEY(3, KEY_WPS_BUTTON), }; static const struct gpio_keys_button bcm47xx_buttons_asus_wl520gu[] __initconst = { BCM47XX_GPIO_KEY(2, KEY_RESTART), BCM47XX_GPIO_KEY(3, KEY_WPS_BUTTON), }; static const struct gpio_keys_button bcm47xx_buttons_asus_wl700ge[] __initconst = { BCM47XX_GPIO_KEY(0, KEY_POWER), /* Hard disk power switch */ BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), /* EZSetup */ BCM47XX_GPIO_KEY(6, KEY_COPY), /* Copy data from USB to internal disk */ BCM47XX_GPIO_KEY(7, KEY_RESTART), /* Hard reset */ }; static const struct gpio_keys_button bcm47xx_buttons_asus_wlhdd[] __initconst = { BCM47XX_GPIO_KEY(6, KEY_RESTART), }; /* Huawei */ static const struct gpio_keys_button bcm47xx_buttons_huawei_e970[] __initconst = { BCM47XX_GPIO_KEY(6, KEY_RESTART), }; /* Belkin */ static const struct gpio_keys_button bcm47xx_buttons_belkin_f7d4301[] __initconst = { BCM47XX_GPIO_KEY(6, KEY_RESTART), BCM47XX_GPIO_KEY(8, KEY_WPS_BUTTON), }; /* Buffalo */ static const struct gpio_keys_button bcm47xx_buttons_buffalo_whr2_a54g54[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_buffalo_whr_g125[] __initconst = { BCM47XX_GPIO_KEY(0, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(4, KEY_RESTART), BCM47XX_GPIO_KEY(5, BTN_0), /* Router / AP mode swtich */ }; static const struct gpio_keys_button bcm47xx_buttons_buffalo_whr_g54s[] __initconst = { BCM47XX_GPIO_KEY(0, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(4, KEY_RESTART), BCM47XX_GPIO_KEY(5, BTN_0), /* Router / AP mode swtich */ }; static const struct gpio_keys_button bcm47xx_buttons_buffalo_whr_hp_g54[] __initconst = { BCM47XX_GPIO_KEY(0, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(4, KEY_RESTART), BCM47XX_GPIO_KEY(5, BTN_0), /* Router / AP mode swtich */ }; static const struct gpio_keys_button bcm47xx_buttons_buffalo_wzr_g300n[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_buffalo_wzr_rs_g54[] __initconst = { BCM47XX_GPIO_KEY(0, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(4, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_buffalo_wzr_rs_g54hp[] __initconst = { BCM47XX_GPIO_KEY(0, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(4, KEY_RESTART), }; /* Dell */ static const struct gpio_keys_button bcm47xx_buttons_dell_tm2300[] __initconst = { BCM47XX_GPIO_KEY(0, KEY_RESTART), }; /* D-Link */ static const struct gpio_keys_button bcm47xx_buttons_dlink_dir130[] __initconst = { BCM47XX_GPIO_KEY(3, KEY_RESTART), BCM47XX_GPIO_KEY(7, KEY_UNKNOWN), }; static const struct gpio_keys_button bcm47xx_buttons_dlink_dir330[] __initconst = { BCM47XX_GPIO_KEY(3, KEY_RESTART), BCM47XX_GPIO_KEY(7, KEY_UNKNOWN), }; /* Linksys */ static const struct gpio_keys_button bcm47xx_buttons_linksys_e1000v1[] __initconst = { BCM47XX_GPIO_KEY(5, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_e1000v21[] __initconst = { BCM47XX_GPIO_KEY(9, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(10, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_e2000v1[] __initconst = { BCM47XX_GPIO_KEY(5, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(8, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_e3000v1[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_e3200v1[] __initconst = { BCM47XX_GPIO_KEY(5, KEY_RESTART), BCM47XX_GPIO_KEY(8, KEY_WPS_BUTTON), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_e4200v1[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_wrt150nv1[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_wrt150nv11[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_wrt160nv1[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_wrt160nv3[] __initconst = { BCM47XX_GPIO_KEY(5, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_wrt300n_v1[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_wrt300nv11[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_UNKNOWN), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_wrt310nv1[] __initconst = { BCM47XX_GPIO_KEY(6, KEY_RESTART), BCM47XX_GPIO_KEY(8, KEY_UNKNOWN), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_wrt54g3gv2[] __initconst = { BCM47XX_GPIO_KEY(5, KEY_WIMAX), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_wrt54g_generic[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_wrt610nv1[] __initconst = { BCM47XX_GPIO_KEY(6, KEY_RESTART), BCM47XX_GPIO_KEY(8, KEY_WPS_BUTTON), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_wrt610nv2[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_linksys_wrtsl54gs[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; /* Luxul */ static const struct gpio_keys_button bcm47xx_buttons_luxul_xwr_1750_v1[] = { BCM47XX_GPIO_KEY(14, BTN_TASK), }; /* Microsoft */ static const struct gpio_keys_button bcm47xx_buttons_microsoft_nm700[] __initconst = { BCM47XX_GPIO_KEY(7, KEY_RESTART), }; /* Motorola */ static const struct gpio_keys_button bcm47xx_buttons_motorola_we800g[] __initconst = { BCM47XX_GPIO_KEY(0, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_motorola_wr850gp[] __initconst = { BCM47XX_GPIO_KEY(5, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_motorola_wr850gv2v3[] __initconst = { BCM47XX_GPIO_KEY(5, KEY_RESTART), }; /* Netgear */ static const struct gpio_keys_button bcm47xx_buttons_netgear_wndr3400v1[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_RESTART), BCM47XX_GPIO_KEY(6, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(8, KEY_RFKILL), }; static const struct gpio_keys_button bcm47xx_buttons_netgear_wndr3400_v3[] __initconst = { BCM47XX_GPIO_KEY(12, KEY_RESTART), BCM47XX_GPIO_KEY(23, KEY_WPS_BUTTON), }; static const struct gpio_keys_button bcm47xx_buttons_netgear_wndr3700v3[] __initconst = { BCM47XX_GPIO_KEY(2, KEY_RFKILL), BCM47XX_GPIO_KEY(3, KEY_RESTART), BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), }; static const struct gpio_keys_button bcm47xx_buttons_netgear_wndr4500v1[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_WPS_BUTTON), BCM47XX_GPIO_KEY(5, KEY_RFKILL), BCM47XX_GPIO_KEY(6, KEY_RESTART), }; static const struct gpio_keys_button bcm47xx_buttons_netgear_wnr3500lv1[] __initconst = { BCM47XX_GPIO_KEY(4, KEY_RESTART), BCM47XX_GPIO_KEY(6, KEY_WPS_BUTTON), }; static const struct gpio_keys_button bcm47xx_buttons_netgear_wnr834bv2[] __initconst = { BCM47XX_GPIO_KEY(6, KEY_RESTART), }; /* SimpleTech */ static const struct gpio_keys_button bcm47xx_buttons_simpletech_simpleshare[] __initconst = { BCM47XX_GPIO_KEY(0, KEY_RESTART), }; /************************************************** * Init **************************************************/ static struct gpio_keys_platform_data bcm47xx_button_pdata; static struct platform_device bcm47xx_buttons_gpio_keys = { .name = "gpio-keys", .dev = { .platform_data = &bcm47xx_button_pdata, } }; /* Copy data from __initconst */ static int __init bcm47xx_buttons_copy(const struct gpio_keys_button *buttons, size_t nbuttons) { size_t size = nbuttons * sizeof(*buttons); bcm47xx_button_pdata.buttons = kmemdup(buttons, size, GFP_KERNEL); if (!bcm47xx_button_pdata.buttons) return -ENOMEM; bcm47xx_button_pdata.nbuttons = nbuttons; return 0; } #define bcm47xx_copy_bdata(dev_buttons) \ bcm47xx_buttons_copy(dev_buttons, ARRAY_SIZE(dev_buttons)); int __init bcm47xx_buttons_register(void) { enum bcm47xx_board board = bcm47xx_board_get(); int err; switch (board) { case BCM47XX_BOARD_ASUS_RTN12: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_rtn12); break; case BCM47XX_BOARD_ASUS_RTN16: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_rtn16); break; case BCM47XX_BOARD_ASUS_RTN66U: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_rtn66u); break; case BCM47XX_BOARD_ASUS_WL300G: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_wl300g); break; case BCM47XX_BOARD_ASUS_WL320GE: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_wl320ge); break; case BCM47XX_BOARD_ASUS_WL330GE: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_wl330ge); break; case BCM47XX_BOARD_ASUS_WL500G: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_wl500g); break; case BCM47XX_BOARD_ASUS_WL500GD: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_wl500gd); break; case BCM47XX_BOARD_ASUS_WL500GPV1: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_wl500gpv1); break; case BCM47XX_BOARD_ASUS_WL500GPV2: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_wl500gpv2); break; case BCM47XX_BOARD_ASUS_WL500W: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_wl500w); break; case BCM47XX_BOARD_ASUS_WL520GC: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_wl520gc); break; case BCM47XX_BOARD_ASUS_WL520GU: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_wl520gu); break; case BCM47XX_BOARD_ASUS_WL700GE: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_wl700ge); break; case BCM47XX_BOARD_ASUS_WLHDD: err = bcm47xx_copy_bdata(bcm47xx_buttons_asus_wlhdd); break; case BCM47XX_BOARD_BELKIN_F7D3301: case BCM47XX_BOARD_BELKIN_F7D3302: case BCM47XX_BOARD_BELKIN_F7D4301: case BCM47XX_BOARD_BELKIN_F7D4302: case BCM47XX_BOARD_BELKIN_F7D4401: err = bcm47xx_copy_bdata(bcm47xx_buttons_belkin_f7d4301); break; case BCM47XX_BOARD_BUFFALO_WHR2_A54G54: err = bcm47xx_copy_bdata(bcm47xx_buttons_buffalo_whr2_a54g54); break; case BCM47XX_BOARD_BUFFALO_WHR_G125: err = bcm47xx_copy_bdata(bcm47xx_buttons_buffalo_whr_g125); break; case BCM47XX_BOARD_BUFFALO_WHR_G54S: err = bcm47xx_copy_bdata(bcm47xx_buttons_buffalo_whr_g54s); break; case BCM47XX_BOARD_BUFFALO_WHR_HP_G54: err = bcm47xx_copy_bdata(bcm47xx_buttons_buffalo_whr_hp_g54); break; case BCM47XX_BOARD_BUFFALO_WZR_G300N: err = bcm47xx_copy_bdata(bcm47xx_buttons_buffalo_wzr_g300n); break; case BCM47XX_BOARD_BUFFALO_WZR_RS_G54: err = bcm47xx_copy_bdata(bcm47xx_buttons_buffalo_wzr_rs_g54); break; case BCM47XX_BOARD_BUFFALO_WZR_RS_G54HP: err = bcm47xx_copy_bdata(bcm47xx_buttons_buffalo_wzr_rs_g54hp); break; case BCM47XX_BOARD_DELL_TM2300: err = bcm47xx_copy_bdata(bcm47xx_buttons_dell_tm2300); break; case BCM47XX_BOARD_DLINK_DIR130: err = bcm47xx_copy_bdata(bcm47xx_buttons_dlink_dir130); break; case BCM47XX_BOARD_DLINK_DIR330: err = bcm47xx_copy_bdata(bcm47xx_buttons_dlink_dir330); break; case BCM47XX_BOARD_HUAWEI_E970: err = bcm47xx_copy_bdata(bcm47xx_buttons_huawei_e970); break; case BCM47XX_BOARD_LINKSYS_E1000V1: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_e1000v1); break; case BCM47XX_BOARD_LINKSYS_E1000V21: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_e1000v21); break; case BCM47XX_BOARD_LINKSYS_E2000V1: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_e2000v1); break; case BCM47XX_BOARD_LINKSYS_E3000V1: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_e3000v1); break; case BCM47XX_BOARD_LINKSYS_E3200V1: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_e3200v1); break; case BCM47XX_BOARD_LINKSYS_E4200V1: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_e4200v1); break; case BCM47XX_BOARD_LINKSYS_WRT150NV1: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt150nv1); break; case BCM47XX_BOARD_LINKSYS_WRT150NV11: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt150nv11); break; case BCM47XX_BOARD_LINKSYS_WRT160NV1: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt160nv1); break; case BCM47XX_BOARD_LINKSYS_WRT160NV3: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt160nv3); break; case BCM47XX_BOARD_LINKSYS_WRT300N_V1: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt300n_v1); break; case BCM47XX_BOARD_LINKSYS_WRT300NV11: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt300nv11); break; case BCM47XX_BOARD_LINKSYS_WRT310NV1: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt310nv1); break; case BCM47XX_BOARD_LINKSYS_WRT54G3GV2: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt54g3gv2); break; case BCM47XX_BOARD_LINKSYS_WRT54G_TYPE_0101: case BCM47XX_BOARD_LINKSYS_WRT54G_TYPE_0467: case BCM47XX_BOARD_LINKSYS_WRT54G_TYPE_0708: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt54g_generic); break; case BCM47XX_BOARD_LINKSYS_WRT610NV1: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt610nv1); break; case BCM47XX_BOARD_LINKSYS_WRT610NV2: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrt610nv2); break; case BCM47XX_BOARD_LINKSYS_WRTSL54GS: err = bcm47xx_copy_bdata(bcm47xx_buttons_linksys_wrtsl54gs); break; case BCM47XX_BOARD_LUXUL_XWR_1750_V1: err = bcm47xx_copy_bdata(bcm47xx_buttons_luxul_xwr_1750_v1); break; case BCM47XX_BOARD_MICROSOFT_MN700: err = bcm47xx_copy_bdata(bcm47xx_buttons_microsoft_nm700); break; case BCM47XX_BOARD_MOTOROLA_WE800G: err = bcm47xx_copy_bdata(bcm47xx_buttons_motorola_we800g); break; case BCM47XX_BOARD_MOTOROLA_WR850GP: err = bcm47xx_copy_bdata(bcm47xx_buttons_motorola_wr850gp); break; case BCM47XX_BOARD_MOTOROLA_WR850GV2V3: err = bcm47xx_copy_bdata(bcm47xx_buttons_motorola_wr850gv2v3); break; case BCM47XX_BOARD_NETGEAR_WNDR3400V1: err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wndr3400v1); break; case BCM47XX_BOARD_NETGEAR_WNDR3400_V3: err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wndr3400_v3); break; case BCM47XX_BOARD_NETGEAR_WNDR3700V3: err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wndr3700v3); break; case BCM47XX_BOARD_NETGEAR_WNDR4500V1: err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wndr4500v1); break; case BCM47XX_BOARD_NETGEAR_WNR3500L: err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wnr3500lv1); break; case BCM47XX_BOARD_NETGEAR_WNR834BV2: err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wnr834bv2); break; case BCM47XX_BOARD_SIMPLETECH_SIMPLESHARE: err = bcm47xx_copy_bdata(bcm47xx_buttons_simpletech_simpleshare); break; default: pr_debug("No buttons configuration found for this device\n"); return -ENOTSUPP; } if (err) return -ENOMEM; err = platform_device_register(&bcm47xx_buttons_gpio_keys); if (err) { pr_err("Failed to register platform device: %d\n", err); return err; } return 0; }