| Rafał Miłecki | ef1e3e7 | 2014-01-14 12:36:29 +0100 | [diff] [blame^] | 1 | #include "bcm47xx_private.h" |
| 2 | |
| 3 | #include <linux/input.h> |
| 4 | #include <linux/gpio_keys.h> |
| 5 | #include <linux/interrupt.h> |
| 6 | #include <linux/ssb/ssb_embedded.h> |
| 7 | #include <bcm47xx_board.h> |
| 8 | #include <bcm47xx.h> |
| 9 | |
| 10 | /************************************************** |
| 11 | * Database |
| 12 | **************************************************/ |
| 13 | |
| 14 | static const struct gpio_keys_button |
| 15 | bcm47xx_buttons_netgear_wndr4500_v1[] __initconst = { |
| 16 | { |
| 17 | .code = KEY_WPS_BUTTON, |
| 18 | .gpio = 4, |
| 19 | .active_low = 1, |
| 20 | }, |
| 21 | { |
| 22 | .code = KEY_RFKILL, |
| 23 | .gpio = 5, |
| 24 | .active_low = 1, |
| 25 | }, |
| 26 | { |
| 27 | .code = KEY_RESTART, |
| 28 | .gpio = 6, |
| 29 | .active_low = 1, |
| 30 | }, |
| 31 | }; |
| 32 | |
| 33 | /************************************************** |
| 34 | * Init |
| 35 | **************************************************/ |
| 36 | |
| 37 | static struct gpio_keys_platform_data bcm47xx_button_pdata; |
| 38 | |
| 39 | static struct platform_device bcm47xx_buttons_gpio_keys = { |
| 40 | .name = "gpio-keys", |
| 41 | .dev = { |
| 42 | .platform_data = &bcm47xx_button_pdata, |
| 43 | } |
| 44 | }; |
| 45 | |
| 46 | /* Copy data from __initconst */ |
| 47 | static int __init bcm47xx_buttons_copy(const struct gpio_keys_button *buttons, |
| 48 | size_t nbuttons) |
| 49 | { |
| 50 | size_t size = nbuttons * sizeof(*buttons); |
| 51 | |
| 52 | bcm47xx_button_pdata.buttons = kmalloc(size, GFP_KERNEL); |
| 53 | if (!bcm47xx_button_pdata.buttons) |
| 54 | return -ENOMEM; |
| 55 | memcpy(bcm47xx_button_pdata.buttons, buttons, size); |
| 56 | bcm47xx_button_pdata.nbuttons = nbuttons; |
| 57 | |
| 58 | return 0; |
| 59 | } |
| 60 | |
| 61 | #define bcm47xx_copy_bdata(dev_buttons) \ |
| 62 | bcm47xx_buttons_copy(dev_buttons, ARRAY_SIZE(dev_buttons)); |
| 63 | |
| 64 | int __init bcm47xx_buttons_register(void) |
| 65 | { |
| 66 | enum bcm47xx_board board = bcm47xx_board_get(); |
| 67 | int err; |
| 68 | |
| 69 | #ifdef CONFIG_BCM47XX_SSB |
| 70 | if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_SSB) { |
| 71 | pr_debug("Buttons on SSB are not supported yet.\n"); |
| 72 | return -ENOTSUPP; |
| 73 | } |
| 74 | #endif |
| 75 | |
| 76 | switch (board) { |
| 77 | case BCM47XX_BOARD_NETGEAR_WNDR4500V1: |
| 78 | err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wndr4500_v1); |
| 79 | break; |
| 80 | default: |
| 81 | pr_debug("No buttons configuration found for this device\n"); |
| 82 | return -ENOTSUPP; |
| 83 | } |
| 84 | |
| 85 | if (err) |
| 86 | return -ENOMEM; |
| 87 | |
| 88 | err = platform_device_register(&bcm47xx_buttons_gpio_keys); |
| 89 | if (err) { |
| 90 | pr_err("Failed to register platform device: %d\n", err); |
| 91 | return err; |
| 92 | } |
| 93 | |
| 94 | return 0; |
| 95 | } |