/*
- * This file is part of wl12xx
+ * This file is part of wl1251
*
* Copyright (C) 2008 Nokia Corporation
*
*
*/
+#include <linux/irq.h>
#include <linux/module.h>
#include <linux/crc7.h>
#include <linux/spi/spi.h>
+#include <linux/spi/wl12xx.h>
-#include "wl12xx.h"
-#include "wl12xx_80211.h"
-#include "reg.h"
+#include "wl1251.h"
+#include "wl1251_reg.h"
#include "wl1251_spi.h"
-static int wl12xx_translate_reg_addr(struct wl12xx *wl, int addr)
+static irqreturn_t wl1251_irq(int irq, void *cookie)
{
- /* If the address is lower than REGISTERS_BASE, it means that this is
- * a chip-specific register address, so look it up in the registers
- * table */
- if (addr < REGISTERS_BASE) {
- /* Make sure we don't go over the table */
- if (addr >= ACX_REG_TABLE_LEN) {
- wl12xx_error("address out of range (%d)", addr);
- return -EINVAL;
- }
- addr = wl->chip.acx_reg_table[addr];
- }
+ struct wl1251 *wl;
+
+ wl1251_debug(DEBUG_IRQ, "IRQ");
+
+ wl = cookie;
- return addr - wl->physical_reg_addr + wl->virtual_reg_addr;
+ ieee80211_queue_work(wl->hw, &wl->irq_work);
+
+ return IRQ_HANDLED;
}
-static int wl12xx_translate_mem_addr(struct wl12xx *wl, int addr)
+static struct spi_device *wl_to_spi(struct wl1251 *wl)
{
- return addr - wl->physical_mem_addr + wl->virtual_mem_addr;
+ return wl->if_priv;
}
-
-void wl12xx_spi_reset(struct wl12xx *wl)
+static void wl1251_spi_reset(struct wl1251 *wl)
{
u8 *cmd;
struct spi_transfer t;
cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL);
if (!cmd) {
- wl12xx_error("could not allocate cmd for spi reset");
+ wl1251_error("could not allocate cmd for spi reset");
return;
}
t.len = WSPI_INIT_CMD_LEN;
spi_message_add_tail(&t, &m);
- spi_sync(wl->spi, &m);
+ spi_sync(wl_to_spi(wl), &m);
- wl12xx_dump(DEBUG_SPI, "spi reset -> ", cmd, WSPI_INIT_CMD_LEN);
+ wl1251_dump(DEBUG_SPI, "spi reset -> ", cmd, WSPI_INIT_CMD_LEN);
}
-void wl12xx_spi_init(struct wl12xx *wl)
+static void wl1251_spi_wake(struct wl1251 *wl)
{
u8 crc[WSPI_INIT_CMD_CRC_LEN], *cmd;
struct spi_transfer t;
cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL);
if (!cmd) {
- wl12xx_error("could not allocate cmd for spi init");
+ wl1251_error("could not allocate cmd for spi init");
return;
}
t.len = WSPI_INIT_CMD_LEN;
spi_message_add_tail(&t, &m);
- spi_sync(wl->spi, &m);
+ spi_sync(wl_to_spi(wl), &m);
- wl12xx_dump(DEBUG_SPI, "spi init -> ", cmd, WSPI_INIT_CMD_LEN);
+ wl1251_dump(DEBUG_SPI, "spi init -> ", cmd, WSPI_INIT_CMD_LEN);
}
-/* Set the SPI partitions to access the chip addresses
- *
- * There are two VIRTUAL (SPI) partitions (the memory partition and the
- * registers partition), which are mapped to two different areas of the
- * PHYSICAL (hardware) memory. This function also makes other checks to
- * ensure that the partitions are not overlapping. In the diagram below, the
- * memory partition comes before the register partition, but the opposite is
- * also supported.
- *
- * PHYSICAL address
- * space
- *
- * | |
- * ...+----+--> mem_start
- * VIRTUAL address ... | |
- * space ... | | [PART_0]
- * ... | |
- * 0x00000000 <--+----+... ...+----+--> mem_start + mem_size
- * | | ... | |
- * |MEM | ... | |
- * | | ... | |
- * part_size <--+----+... | | {unused area)
- * | | ... | |
- * |REG | ... | |
- * part_size | | ... | |
- * + <--+----+... ...+----+--> reg_start
- * reg_size ... | |
- * ... | | [PART_1]
- * ... | |
- * ...+----+--> reg_start + reg_size
- * | |
- *
- */
-int wl12xx_set_partition(struct wl12xx *wl,
- u32 mem_start, u32 mem_size,
- u32 reg_start, u32 reg_size)
+static void wl1251_spi_reset_wake(struct wl1251 *wl)
{
- struct wl12xx_partition *partition;
- struct spi_transfer t;
- struct spi_message m;
- size_t len, cmd_len;
- u32 *cmd;
- int addr;
-
- cmd_len = sizeof(u32) + 2 * sizeof(struct wl12xx_partition);
- cmd = kzalloc(cmd_len, GFP_KERNEL);
- if (!cmd)
- return -ENOMEM;
-
- spi_message_init(&m);
- memset(&t, 0, sizeof(t));
-
- partition = (struct wl12xx_partition *) (cmd + 1);
- addr = HW_ACCESS_PART0_SIZE_ADDR;
- len = 2 * sizeof(struct wl12xx_partition);
-
- *cmd |= WSPI_CMD_WRITE;
- *cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH;
- *cmd |= addr & WSPI_CMD_BYTE_ADDR;
-
- wl12xx_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
- mem_start, mem_size);
- wl12xx_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
- reg_start, reg_size);
-
- /* Make sure that the two partitions together don't exceed the
- * address range */
- if ((mem_size + reg_size) > HW_ACCESS_MEMORY_MAX_RANGE) {
- wl12xx_debug(DEBUG_SPI, "Total size exceeds maximum virtual"
- " address range. Truncating partition[0].");
- mem_size = HW_ACCESS_MEMORY_MAX_RANGE - reg_size;
- wl12xx_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
- mem_start, mem_size);
- wl12xx_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
- reg_start, reg_size);
- }
-
- if ((mem_start < reg_start) &&
- ((mem_start + mem_size) > reg_start)) {
- /* Guarantee that the memory partition doesn't overlap the
- * registers partition */
- wl12xx_debug(DEBUG_SPI, "End of partition[0] is "
- "overlapping partition[1]. Adjusted.");
- mem_size = reg_start - mem_start;
- wl12xx_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
- mem_start, mem_size);
- wl12xx_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
- reg_start, reg_size);
- } else if ((reg_start < mem_start) &&
- ((reg_start + reg_size) > mem_start)) {
- /* Guarantee that the register partition doesn't overlap the
- * memory partition */
- wl12xx_debug(DEBUG_SPI, "End of partition[1] is"
- " overlapping partition[0]. Adjusted.");
- reg_size = mem_start - reg_start;
- wl12xx_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
- mem_start, mem_size);
- wl12xx_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
- reg_start, reg_size);
- }
-
- partition[0].start = mem_start;
- partition[0].size = mem_size;
- partition[1].start = reg_start;
- partition[1].size = reg_size;
-
- wl->physical_mem_addr = mem_start;
- wl->physical_reg_addr = reg_start;
-
- wl->virtual_mem_addr = 0;
- wl->virtual_reg_addr = mem_size;
-
- t.tx_buf = cmd;
- t.len = cmd_len;
- spi_message_add_tail(&t, &m);
-
- spi_sync(wl->spi, &m);
-
- kfree(cmd);
-
- return 0;
+ wl1251_spi_reset(wl);
+ wl1251_spi_wake(wl);
}
-void wl12xx_spi_read(struct wl12xx *wl, int addr, void *buf,
- size_t len, bool fixed)
+static void wl1251_spi_read(struct wl1251 *wl, int addr, void *buf,
+ size_t len)
{
struct spi_transfer t[3];
struct spi_message m;
*cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH;
*cmd |= addr & WSPI_CMD_BYTE_ADDR;
- if (fixed)
- *cmd |= WSPI_CMD_FIXED;
-
spi_message_init(&m);
memset(t, 0, sizeof(t));
/* Busy and non busy words read */
t[1].rx_buf = busy_buf;
- t[1].len = WL12XX_BUSY_WORD_LEN;
+ t[1].len = WL1251_BUSY_WORD_LEN;
spi_message_add_tail(&t[1], &m);
t[2].rx_buf = buf;
t[2].len = len;
spi_message_add_tail(&t[2], &m);
- spi_sync(wl->spi, &m);
+ spi_sync(wl_to_spi(wl), &m);
/* FIXME: check busy words */
- wl12xx_dump(DEBUG_SPI, "spi_read cmd -> ", cmd, sizeof(*cmd));
- wl12xx_dump(DEBUG_SPI, "spi_read buf <- ", buf, len);
+ wl1251_dump(DEBUG_SPI, "spi_read cmd -> ", cmd, sizeof(*cmd));
+ wl1251_dump(DEBUG_SPI, "spi_read buf <- ", buf, len);
}
-void wl12xx_spi_write(struct wl12xx *wl, int addr, void *buf,
- size_t len, bool fixed)
+static void wl1251_spi_write(struct wl1251 *wl, int addr, void *buf,
+ size_t len)
{
struct spi_transfer t[2];
struct spi_message m;
*cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH;
*cmd |= addr & WSPI_CMD_BYTE_ADDR;
- if (fixed)
- *cmd |= WSPI_CMD_FIXED;
-
spi_message_init(&m);
memset(t, 0, sizeof(t));
t[1].len = len;
spi_message_add_tail(&t[1], &m);
- spi_sync(wl->spi, &m);
+ spi_sync(wl_to_spi(wl), &m);
- wl12xx_dump(DEBUG_SPI, "spi_write cmd -> ", cmd, sizeof(*cmd));
- wl12xx_dump(DEBUG_SPI, "spi_write buf -> ", buf, len);
+ wl1251_dump(DEBUG_SPI, "spi_write cmd -> ", cmd, sizeof(*cmd));
+ wl1251_dump(DEBUG_SPI, "spi_write buf -> ", buf, len);
}
-void wl12xx_spi_mem_read(struct wl12xx *wl, int addr, void *buf,
- size_t len)
+static void wl1251_spi_enable_irq(struct wl1251 *wl)
{
- int physical;
-
- physical = wl12xx_translate_mem_addr(wl, addr);
+ return enable_irq(wl->irq);
+}
- wl12xx_spi_read(wl, physical, buf, len, false);
+static void wl1251_spi_disable_irq(struct wl1251 *wl)
+{
+ return disable_irq(wl->irq);
}
-void wl12xx_spi_mem_write(struct wl12xx *wl, int addr, void *buf,
- size_t len)
+static const struct wl1251_if_operations wl1251_spi_ops = {
+ .read = wl1251_spi_read,
+ .write = wl1251_spi_write,
+ .reset = wl1251_spi_reset_wake,
+ .enable_irq = wl1251_spi_enable_irq,
+ .disable_irq = wl1251_spi_disable_irq,
+};
+
+static int __devinit wl1251_spi_probe(struct spi_device *spi)
{
- int physical;
+ struct wl12xx_platform_data *pdata;
+ struct ieee80211_hw *hw;
+ struct wl1251 *wl;
+ int ret;
+
+ pdata = spi->dev.platform_data;
+ if (!pdata) {
+ wl1251_error("no platform data");
+ return -ENODEV;
+ }
- physical = wl12xx_translate_mem_addr(wl, addr);
+ hw = wl1251_alloc_hw();
+ if (IS_ERR(hw))
+ return PTR_ERR(hw);
- wl12xx_spi_write(wl, physical, buf, len, false);
-}
+ wl = hw->priv;
-void wl12xx_spi_reg_read(struct wl12xx *wl, int addr, void *buf, size_t len,
- bool fixed)
-{
- int physical;
+ SET_IEEE80211_DEV(hw, &spi->dev);
+ dev_set_drvdata(&spi->dev, wl);
+ wl->if_priv = spi;
+ wl->if_ops = &wl1251_spi_ops;
- physical = wl12xx_translate_reg_addr(wl, addr);
+ /* This is the only SPI value that we need to set here, the rest
+ * comes from the board-peripherals file */
+ spi->bits_per_word = 32;
- wl12xx_spi_read(wl, physical, buf, len, fixed);
-}
+ ret = spi_setup(spi);
+ if (ret < 0) {
+ wl1251_error("spi_setup failed");
+ goto out_free;
+ }
-void wl12xx_spi_reg_write(struct wl12xx *wl, int addr, void *buf, size_t len,
- bool fixed)
-{
- int physical;
+ wl->set_power = pdata->set_power;
+ if (!wl->set_power) {
+ wl1251_error("set power function missing in platform data");
+ return -ENODEV;
+ }
- physical = wl12xx_translate_reg_addr(wl, addr);
+ wl->irq = spi->irq;
+ if (wl->irq < 0) {
+ wl1251_error("irq missing in platform data");
+ return -ENODEV;
+ }
- wl12xx_spi_write(wl, physical, buf, len, fixed);
-}
+ wl->use_eeprom = pdata->use_eeprom;
-u32 wl12xx_mem_read32(struct wl12xx *wl, int addr)
-{
- return wl12xx_read32(wl, wl12xx_translate_mem_addr(wl, addr));
+ ret = request_irq(wl->irq, wl1251_irq, 0, DRIVER_NAME, wl);
+ if (ret < 0) {
+ wl1251_error("request_irq() failed: %d", ret);
+ goto out_free;
+ }
+
+ set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
+
+ disable_irq(wl->irq);
+
+ ret = wl1251_init_ieee80211(wl);
+ if (ret)
+ goto out_irq;
+
+ return 0;
+
+ out_irq:
+ free_irq(wl->irq, wl);
+
+ out_free:
+ ieee80211_free_hw(hw);
+
+ return ret;
}
-void wl12xx_mem_write32(struct wl12xx *wl, int addr, u32 val)
+static int __devexit wl1251_spi_remove(struct spi_device *spi)
{
- wl12xx_write32(wl, wl12xx_translate_mem_addr(wl, addr), val);
+ struct wl1251 *wl = dev_get_drvdata(&spi->dev);
+
+ free_irq(wl->irq, wl);
+ wl1251_free_hw(wl);
+
+ return 0;
}
-u32 wl12xx_reg_read32(struct wl12xx *wl, int addr)
+static struct spi_driver wl1251_spi_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
+
+ .probe = wl1251_spi_probe,
+ .remove = __devexit_p(wl1251_spi_remove),
+};
+
+static int __init wl1251_spi_init(void)
{
- return wl12xx_read32(wl, wl12xx_translate_reg_addr(wl, addr));
+ int ret;
+
+ ret = spi_register_driver(&wl1251_spi_driver);
+ if (ret < 0) {
+ wl1251_error("failed to register spi driver: %d", ret);
+ goto out;
+ }
+
+out:
+ return ret;
}
-void wl12xx_reg_write32(struct wl12xx *wl, int addr, u32 val)
+static void __exit wl1251_spi_exit(void)
{
- wl12xx_write32(wl, wl12xx_translate_reg_addr(wl, addr), val);
+ spi_unregister_driver(&wl1251_spi_driver);
+
+ wl1251_notice("unloaded");
}
+
+module_init(wl1251_spi_init);
+module_exit(wl1251_spi_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kalle Valo <kalle.valo@nokia.com>");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff