diff options
Diffstat (limited to 'drivers/net/wireless/wl12xx/wl1251_sdio.c')
| -rw-r--r-- | drivers/net/wireless/wl12xx/wl1251_sdio.c | 144 |
1 files changed, 126 insertions, 18 deletions
diff --git a/drivers/net/wireless/wl12xx/wl1251_sdio.c b/drivers/net/wireless/wl12xx/wl1251_sdio.c index 9423f22bdce..d234285c2c8 100644 --- a/drivers/net/wireless/wl12xx/wl1251_sdio.c +++ b/drivers/net/wireless/wl12xx/wl1251_sdio.c @@ -20,20 +20,14 @@ * Copyright (C) 2009 Bob Copeland (me@bobcopeland.com) */ #include <linux/module.h> -#include <linux/crc7.h> #include <linux/mod_devicetable.h> -#include <linux/irq.h> #include <linux/mmc/sdio_func.h> #include <linux/mmc/sdio_ids.h> #include <linux/platform_device.h> +#include <linux/spi/wl12xx.h> +#include <linux/irq.h> #include "wl1251.h" -#include "wl12xx_80211.h" -#include "wl1251_reg.h" -#include "wl1251_ps.h" -#include "wl1251_io.h" -#include "wl1251_tx.h" -#include "wl1251_debugfs.h" #ifndef SDIO_VENDOR_ID_TI #define SDIO_VENDOR_ID_TI 0x104c @@ -43,6 +37,8 @@ #define SDIO_DEVICE_ID_TI_WL1251 0x9066 #endif +static struct wl12xx_platform_data *wl12xx_board_data; + static struct sdio_func *wl_to_func(struct wl1251 *wl) { return wl->if_priv; @@ -65,7 +61,8 @@ static const struct sdio_device_id wl1251_devices[] = { MODULE_DEVICE_TABLE(sdio, wl1251_devices); -void wl1251_sdio_read(struct wl1251 *wl, int addr, void *buf, size_t len) +static void wl1251_sdio_read(struct wl1251 *wl, int addr, + void *buf, size_t len) { int ret; struct sdio_func *func = wl_to_func(wl); @@ -77,7 +74,8 @@ void wl1251_sdio_read(struct wl1251 *wl, int addr, void *buf, size_t len) sdio_release_host(func); } -void wl1251_sdio_write(struct wl1251 *wl, int addr, void *buf, size_t len) +static void wl1251_sdio_write(struct wl1251 *wl, int addr, + void *buf, size_t len) { int ret; struct sdio_func *func = wl_to_func(wl); @@ -89,7 +87,33 @@ void wl1251_sdio_write(struct wl1251 *wl, int addr, void *buf, size_t len) sdio_release_host(func); } -void wl1251_sdio_reset(struct wl1251 *wl) +static void wl1251_sdio_read_elp(struct wl1251 *wl, int addr, u32 *val) +{ + int ret = 0; + struct sdio_func *func = wl_to_func(wl); + + sdio_claim_host(func); + *val = sdio_readb(func, addr, &ret); + sdio_release_host(func); + + if (ret) + wl1251_error("sdio_readb failed (%d)", ret); +} + +static void wl1251_sdio_write_elp(struct wl1251 *wl, int addr, u32 val) +{ + int ret = 0; + struct sdio_func *func = wl_to_func(wl); + + sdio_claim_host(func); + sdio_writeb(func, val, addr, &ret); + sdio_release_host(func); + + if (ret) + wl1251_error("sdio_writeb failed (%d)", ret); +} + +static void wl1251_sdio_reset(struct wl1251 *wl) { } @@ -111,19 +135,64 @@ static void wl1251_sdio_disable_irq(struct wl1251 *wl) sdio_release_host(func); } -void wl1251_sdio_set_power(bool enable) +/* Interrupts when using dedicated WLAN_IRQ pin */ +static irqreturn_t wl1251_line_irq(int irq, void *cookie) +{ + struct wl1251 *wl = cookie; + + ieee80211_queue_work(wl->hw, &wl->irq_work); + + return IRQ_HANDLED; +} + +static void wl1251_enable_line_irq(struct wl1251 *wl) { + return enable_irq(wl->irq); } -struct wl1251_if_operations wl1251_sdio_ops = { +static void wl1251_disable_line_irq(struct wl1251 *wl) +{ + return disable_irq(wl->irq); +} + +static void wl1251_sdio_set_power(bool enable) +{ +} + +static struct wl1251_if_operations wl1251_sdio_ops = { .read = wl1251_sdio_read, .write = wl1251_sdio_write, + .write_elp = wl1251_sdio_write_elp, + .read_elp = wl1251_sdio_read_elp, .reset = wl1251_sdio_reset, - .enable_irq = wl1251_sdio_enable_irq, - .disable_irq = wl1251_sdio_disable_irq, }; -int wl1251_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) +static int wl1251_platform_probe(struct platform_device *pdev) +{ + if (pdev->id != -1) { + wl1251_error("can only handle single device"); + return -ENODEV; + } + + wl12xx_board_data = pdev->dev.platform_data; + return 0; +} + +/* + * Dummy platform_driver for passing platform_data to this driver, + * until we have a way to pass this through SDIO subsystem or + * some other way. + */ +static struct platform_driver wl1251_platform_driver = { + .driver = { + .name = "wl1251_data", + .owner = THIS_MODULE, + }, + .probe = wl1251_platform_probe, +}; + +static int wl1251_sdio_probe(struct sdio_func *func, + const struct sdio_device_id *id) { int ret; struct wl1251 *wl; @@ -141,20 +210,50 @@ int wl1251_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) goto release; sdio_set_block_size(func, 512); + sdio_release_host(func); SET_IEEE80211_DEV(hw, &func->dev); wl->if_priv = func; wl->if_ops = &wl1251_sdio_ops; wl->set_power = wl1251_sdio_set_power; - sdio_release_host(func); + if (wl12xx_board_data != NULL) { + wl->set_power = wl12xx_board_data->set_power; + wl->irq = wl12xx_board_data->irq; + wl->use_eeprom = wl12xx_board_data->use_eeprom; + } + + if (wl->irq) { + ret = request_irq(wl->irq, wl1251_line_irq, 0, "wl1251", wl); + if (ret < 0) { + wl1251_error("request_irq() failed: %d", ret); + goto disable; + } + + set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING); + disable_irq(wl->irq); + + wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq; + wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq; + + wl1251_info("using dedicated interrupt line"); + } else { + wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq; + wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq; + + wl1251_info("using SDIO interrupt"); + } + ret = wl1251_init_ieee80211(wl); if (ret) - goto disable; + goto out_free_irq; sdio_set_drvdata(func, wl); return ret; +out_free_irq: + if (wl->irq) + free_irq(wl->irq, wl); disable: sdio_claim_host(func); sdio_disable_func(func); @@ -167,6 +266,8 @@ static void __devexit wl1251_sdio_remove(struct sdio_func *func) { struct wl1251 *wl = sdio_get_drvdata(func); + if (wl->irq) + free_irq(wl->irq, wl); wl1251_free_hw(wl); sdio_claim_host(func); @@ -186,6 +287,12 @@ static int __init wl1251_sdio_init(void) { int err; + err = platform_driver_register(&wl1251_platform_driver); + if (err) { + wl1251_error("failed to register platform driver: %d", err); + return err; + } + err = sdio_register_driver(&wl1251_sdio_driver); if (err) wl1251_error("failed to register sdio driver: %d", err); @@ -195,6 +302,7 @@ static int __init wl1251_sdio_init(void) static void __exit wl1251_sdio_exit(void) { sdio_unregister_driver(&wl1251_sdio_driver); + platform_driver_unregister(&wl1251_platform_driver); wl1251_notice("unloaded"); } |