Bob Copeland | 3ec410d | 2009-08-07 13:33:42 +0300 | [diff] [blame] | 1 | /* |
| 2 | * wl12xx SDIO routines |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 as |
| 6 | * published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 11 | * General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License |
| 14 | * along with this program; if not, write to the Free Software |
| 15 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
| 16 | * 02110-1301 USA |
| 17 | * |
| 18 | * Copyright (C) 2005 Texas Instruments Incorporated |
| 19 | * Copyright (C) 2008 Google Inc |
| 20 | * Copyright (C) 2009 Bob Copeland (me@bobcopeland.com) |
| 21 | */ |
| 22 | #include <linux/module.h> |
| 23 | #include <linux/crc7.h> |
| 24 | #include <linux/mod_devicetable.h> |
| 25 | #include <linux/irq.h> |
| 26 | #include <linux/mmc/sdio_func.h> |
| 27 | #include <linux/mmc/sdio_ids.h> |
| 28 | #include <linux/platform_device.h> |
| 29 | |
| 30 | #include "wl1251.h" |
| 31 | #include "wl12xx_80211.h" |
| 32 | #include "reg.h" |
| 33 | #include "wl1251_ps.h" |
| 34 | #include "wl1251_io.h" |
| 35 | #include "wl1251_tx.h" |
| 36 | #include "wl1251_debugfs.h" |
| 37 | |
| 38 | #ifndef SDIO_VENDOR_ID_TI |
| 39 | #define SDIO_VENDOR_ID_TI 0x104c |
| 40 | #endif |
| 41 | |
| 42 | #ifndef SDIO_DEVICE_ID_TI_WL1251 |
| 43 | #define SDIO_DEVICE_ID_TI_WL1251 0x9066 |
| 44 | #endif |
| 45 | |
| 46 | static struct sdio_func *wl_to_func(struct wl1251 *wl) |
| 47 | { |
| 48 | return wl->if_priv; |
| 49 | } |
| 50 | |
| 51 | static void wl1251_sdio_interrupt(struct sdio_func *func) |
| 52 | { |
Bob Copeland | b5ed9c1 | 2009-08-07 13:33:49 +0300 | [diff] [blame] | 53 | struct wl1251 *wl = sdio_get_drvdata(func); |
| 54 | |
| 55 | wl1251_debug(DEBUG_IRQ, "IRQ"); |
| 56 | |
| 57 | /* FIXME should be synchronous for sdio */ |
Kalle Valo | 16e711f | 2009-08-07 13:35:04 +0300 | [diff] [blame^] | 58 | ieee80211_queue_work(wl->hw, &wl->irq_work); |
Bob Copeland | 3ec410d | 2009-08-07 13:33:42 +0300 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | static const struct sdio_device_id wl1251_devices[] = { |
| 62 | { SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1251) }, |
| 63 | {} |
| 64 | }; |
| 65 | MODULE_DEVICE_TABLE(sdio, wl1251_devices); |
| 66 | |
| 67 | |
| 68 | void wl1251_sdio_read(struct wl1251 *wl, int addr, void *buf, size_t len) |
| 69 | { |
| 70 | int ret; |
| 71 | struct sdio_func *func = wl_to_func(wl); |
| 72 | |
| 73 | sdio_claim_host(func); |
| 74 | ret = sdio_memcpy_fromio(func, buf, addr, len); |
| 75 | if (ret) |
| 76 | wl1251_error("sdio read failed (%d)", ret); |
| 77 | sdio_release_host(func); |
| 78 | } |
| 79 | |
| 80 | void wl1251_sdio_write(struct wl1251 *wl, int addr, void *buf, size_t len) |
| 81 | { |
| 82 | int ret; |
| 83 | struct sdio_func *func = wl_to_func(wl); |
| 84 | |
| 85 | sdio_claim_host(func); |
| 86 | ret = sdio_memcpy_toio(func, addr, buf, len); |
| 87 | if (ret) |
| 88 | wl1251_error("sdio write failed (%d)", ret); |
| 89 | sdio_release_host(func); |
| 90 | } |
| 91 | |
| 92 | void wl1251_sdio_reset(struct wl1251 *wl) |
| 93 | { |
| 94 | } |
| 95 | |
Bob Copeland | b5ed9c1 | 2009-08-07 13:33:49 +0300 | [diff] [blame] | 96 | static void wl1251_sdio_enable_irq(struct wl1251 *wl) |
| 97 | { |
| 98 | struct sdio_func *func = wl_to_func(wl); |
| 99 | |
| 100 | sdio_claim_host(func); |
| 101 | sdio_claim_irq(func, wl1251_sdio_interrupt); |
| 102 | sdio_release_host(func); |
| 103 | } |
| 104 | |
| 105 | static void wl1251_sdio_disable_irq(struct wl1251 *wl) |
| 106 | { |
| 107 | struct sdio_func *func = wl_to_func(wl); |
| 108 | |
| 109 | sdio_claim_host(func); |
| 110 | sdio_release_irq(func); |
| 111 | sdio_release_host(func); |
| 112 | } |
| 113 | |
Bob Copeland | 3ec410d | 2009-08-07 13:33:42 +0300 | [diff] [blame] | 114 | void wl1251_sdio_set_power(bool enable) |
| 115 | { |
| 116 | } |
| 117 | |
| 118 | struct wl1251_if_operations wl1251_sdio_ops = { |
| 119 | .read = wl1251_sdio_read, |
| 120 | .write = wl1251_sdio_write, |
| 121 | .reset = wl1251_sdio_reset, |
Bob Copeland | b5ed9c1 | 2009-08-07 13:33:49 +0300 | [diff] [blame] | 122 | .enable_irq = wl1251_sdio_enable_irq, |
| 123 | .disable_irq = wl1251_sdio_disable_irq, |
Bob Copeland | 3ec410d | 2009-08-07 13:33:42 +0300 | [diff] [blame] | 124 | }; |
| 125 | |
| 126 | int wl1251_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) |
| 127 | { |
| 128 | int ret; |
| 129 | struct wl1251 *wl; |
| 130 | struct ieee80211_hw *hw; |
| 131 | |
| 132 | hw = wl1251_alloc_hw(); |
| 133 | if (IS_ERR(hw)) |
| 134 | return PTR_ERR(hw); |
| 135 | |
| 136 | wl = hw->priv; |
| 137 | |
| 138 | sdio_claim_host(func); |
| 139 | ret = sdio_enable_func(func); |
| 140 | if (ret) |
| 141 | goto release; |
| 142 | |
| 143 | sdio_set_block_size(func, 512); |
| 144 | |
| 145 | SET_IEEE80211_DEV(hw, &func->dev); |
| 146 | wl->if_priv = func; |
| 147 | wl->if_ops = &wl1251_sdio_ops; |
| 148 | wl->set_power = wl1251_sdio_set_power; |
| 149 | |
| 150 | sdio_release_host(func); |
| 151 | ret = wl1251_init_ieee80211(wl); |
Bob Copeland | 3ec410d | 2009-08-07 13:33:42 +0300 | [diff] [blame] | 152 | if (ret) |
| 153 | goto disable; |
| 154 | |
Bob Copeland | 3ec410d | 2009-08-07 13:33:42 +0300 | [diff] [blame] | 155 | sdio_set_drvdata(func, wl); |
| 156 | return ret; |
| 157 | |
Bob Copeland | 3ec410d | 2009-08-07 13:33:42 +0300 | [diff] [blame] | 158 | disable: |
Bob Copeland | b5ed9c1 | 2009-08-07 13:33:49 +0300 | [diff] [blame] | 159 | sdio_claim_host(func); |
Bob Copeland | 3ec410d | 2009-08-07 13:33:42 +0300 | [diff] [blame] | 160 | sdio_disable_func(func); |
| 161 | release: |
| 162 | sdio_release_host(func); |
| 163 | return ret; |
| 164 | } |
| 165 | |
| 166 | static void __devexit wl1251_sdio_remove(struct sdio_func *func) |
| 167 | { |
| 168 | struct wl1251 *wl = sdio_get_drvdata(func); |
| 169 | |
| 170 | wl1251_free_hw(wl); |
| 171 | |
| 172 | sdio_claim_host(func); |
| 173 | sdio_release_irq(func); |
| 174 | sdio_disable_func(func); |
| 175 | sdio_release_host(func); |
| 176 | } |
| 177 | |
| 178 | static struct sdio_driver wl1251_sdio_driver = { |
| 179 | .name = "wl1251_sdio", |
| 180 | .id_table = wl1251_devices, |
| 181 | .probe = wl1251_sdio_probe, |
| 182 | .remove = __devexit_p(wl1251_sdio_remove), |
| 183 | }; |
| 184 | |
| 185 | static int __init wl1251_sdio_init(void) |
| 186 | { |
| 187 | int err; |
| 188 | |
| 189 | err = sdio_register_driver(&wl1251_sdio_driver); |
| 190 | if (err) |
| 191 | wl1251_error("failed to register sdio driver: %d", err); |
| 192 | return err; |
| 193 | } |
| 194 | |
| 195 | static void __exit wl1251_sdio_exit(void) |
| 196 | { |
| 197 | sdio_unregister_driver(&wl1251_sdio_driver); |
| 198 | wl1251_notice("unloaded"); |
| 199 | } |
| 200 | |
| 201 | module_init(wl1251_sdio_init); |
| 202 | module_exit(wl1251_sdio_exit); |
| 203 | |
| 204 | MODULE_LICENSE("GPL"); |
| 205 | MODULE_AUTHOR("Kalle Valo <Kalle.Valo@nokia.com>"); |
| 206 | MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>"); |