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.
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.
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
18 * Copyright (C) 2005 Texas Instruments Incorporated
19 * Copyright (C) 2008 Google Inc
20 * Copyright (C) 2009 Bob Copeland (me@bobcopeland.com)
22 #include <linux/module.h>
23 #include <linux/mod_devicetable.h>
24 #include <linux/mmc/sdio_func.h>
25 #include <linux/mmc/sdio_ids.h>
26 #include <linux/platform_device.h>
27 #include <linux/spi/wl12xx.h>
31 #ifndef SDIO_VENDOR_ID_TI
32 #define SDIO_VENDOR_ID_TI 0x104c
35 #ifndef SDIO_DEVICE_ID_TI_WL1251
36 #define SDIO_DEVICE_ID_TI_WL1251 0x9066
39 static struct wl12xx_platform_data *wl12xx_board_data;
41 static struct sdio_func *wl_to_func(struct wl1251 *wl)
46 static void wl1251_sdio_interrupt(struct sdio_func *func)
48 struct wl1251 *wl = sdio_get_drvdata(func);
50 wl1251_debug(DEBUG_IRQ, "IRQ");
52 /* FIXME should be synchronous for sdio */
53 ieee80211_queue_work(wl->hw, &wl->irq_work);
56 static const struct sdio_device_id wl1251_devices[] = {
57 { SDIO_DEVICE(SDIO_VENDOR_ID_TI, SDIO_DEVICE_ID_TI_WL1251) },
60 MODULE_DEVICE_TABLE(sdio, wl1251_devices);
63 static void wl1251_sdio_read(struct wl1251 *wl, int addr,
64 void *buf, size_t len)
67 struct sdio_func *func = wl_to_func(wl);
69 sdio_claim_host(func);
70 ret = sdio_memcpy_fromio(func, buf, addr, len);
72 wl1251_error("sdio read failed (%d)", ret);
73 sdio_release_host(func);
76 static void wl1251_sdio_write(struct wl1251 *wl, int addr,
77 void *buf, size_t len)
80 struct sdio_func *func = wl_to_func(wl);
82 sdio_claim_host(func);
83 ret = sdio_memcpy_toio(func, addr, buf, len);
85 wl1251_error("sdio write failed (%d)", ret);
86 sdio_release_host(func);
89 static void wl1251_sdio_read_elp(struct wl1251 *wl, int addr, u32 *val)
92 struct sdio_func *func = wl_to_func(wl);
94 sdio_claim_host(func);
95 *val = sdio_readb(func, addr, &ret);
96 sdio_release_host(func);
99 wl1251_error("sdio_readb failed (%d)", ret);
102 static void wl1251_sdio_write_elp(struct wl1251 *wl, int addr, u32 val)
105 struct sdio_func *func = wl_to_func(wl);
107 sdio_claim_host(func);
108 sdio_writeb(func, val, addr, &ret);
109 sdio_release_host(func);
112 wl1251_error("sdio_writeb failed (%d)", ret);
115 static void wl1251_sdio_reset(struct wl1251 *wl)
119 static void wl1251_sdio_enable_irq(struct wl1251 *wl)
121 struct sdio_func *func = wl_to_func(wl);
123 sdio_claim_host(func);
124 sdio_claim_irq(func, wl1251_sdio_interrupt);
125 sdio_release_host(func);
128 static void wl1251_sdio_disable_irq(struct wl1251 *wl)
130 struct sdio_func *func = wl_to_func(wl);
132 sdio_claim_host(func);
133 sdio_release_irq(func);
134 sdio_release_host(func);
137 static void wl1251_sdio_set_power(bool enable)
141 static const struct wl1251_if_operations wl1251_sdio_ops = {
142 .read = wl1251_sdio_read,
143 .write = wl1251_sdio_write,
144 .write_elp = wl1251_sdio_write_elp,
145 .read_elp = wl1251_sdio_read_elp,
146 .reset = wl1251_sdio_reset,
147 .enable_irq = wl1251_sdio_enable_irq,
148 .disable_irq = wl1251_sdio_disable_irq,
151 static int wl1251_platform_probe(struct platform_device *pdev)
153 if (pdev->id != -1) {
154 wl1251_error("can only handle single device");
158 wl12xx_board_data = pdev->dev.platform_data;
163 * Dummy platform_driver for passing platform_data to this driver,
164 * until we have a way to pass this through SDIO subsystem or
167 static struct platform_driver wl1251_platform_driver = {
169 .name = "wl1251_data",
170 .owner = THIS_MODULE,
172 .probe = wl1251_platform_probe,
175 static int wl1251_sdio_probe(struct sdio_func *func,
176 const struct sdio_device_id *id)
180 struct ieee80211_hw *hw;
182 hw = wl1251_alloc_hw();
188 sdio_claim_host(func);
189 ret = sdio_enable_func(func);
193 sdio_set_block_size(func, 512);
195 SET_IEEE80211_DEV(hw, &func->dev);
197 wl->if_ops = &wl1251_sdio_ops;
198 wl->set_power = wl1251_sdio_set_power;
200 if (wl12xx_board_data != NULL) {
201 wl->set_power = wl12xx_board_data->set_power;
202 wl->use_eeprom = wl12xx_board_data->use_eeprom;
205 sdio_release_host(func);
206 ret = wl1251_init_ieee80211(wl);
210 sdio_set_drvdata(func, wl);
214 sdio_claim_host(func);
215 sdio_disable_func(func);
217 sdio_release_host(func);
221 static void __devexit wl1251_sdio_remove(struct sdio_func *func)
223 struct wl1251 *wl = sdio_get_drvdata(func);
227 sdio_claim_host(func);
228 sdio_release_irq(func);
229 sdio_disable_func(func);
230 sdio_release_host(func);
233 static struct sdio_driver wl1251_sdio_driver = {
234 .name = "wl1251_sdio",
235 .id_table = wl1251_devices,
236 .probe = wl1251_sdio_probe,
237 .remove = __devexit_p(wl1251_sdio_remove),
240 static int __init wl1251_sdio_init(void)
244 err = platform_driver_register(&wl1251_platform_driver);
246 wl1251_error("failed to register platform driver: %d", err);
250 err = sdio_register_driver(&wl1251_sdio_driver);
252 wl1251_error("failed to register sdio driver: %d", err);
256 static void __exit wl1251_sdio_exit(void)
258 sdio_unregister_driver(&wl1251_sdio_driver);
259 platform_driver_unregister(&wl1251_platform_driver);
260 wl1251_notice("unloaded");
263 module_init(wl1251_sdio_init);
264 module_exit(wl1251_sdio_exit);
266 MODULE_LICENSE("GPL");
267 MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");