*
*/
+#include <linux/irq.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/crc7.h>
#include <linux/spi/spi.h>
+#include <linux/spi/wl12xx.h>
#include "wl1271.h"
#include "wl12xx_80211.h"
#include "wl1271_spi.h"
+#include "wl1271_io.h"
-static int wl1271_translate_addr(struct wl1271 *wl, int addr)
-{
- /*
- * To translate, first check to which window of addresses the
- * particular address belongs. Then subtract the starting address
- * of that window from the address. Then, add offset of the
- * translated region.
- *
- * The translated regions occur next to each other in physical device
- * memory, so just add the sizes of the preceeding address regions to
- * get the offset to the new region.
- *
- * Currently, only the two first regions are addressed, and the
- * assumption is that all addresses will fall into either of those
- * two.
- */
- if ((addr >= wl->part.reg.start) &&
- (addr < wl->part.reg.start + wl->part.reg.size))
- return addr - wl->part.reg.start + wl->part.mem.size;
- else
- return addr - wl->part.mem.start;
-}
void wl1271_spi_reset(struct wl1271 *wl)
{
wl1271_dump(DEBUG_SPI, "spi init -> ", cmd, WSPI_INIT_CMD_LEN);
}
-/* Set the SPI partitions to access the chip addresses
- *
- * To simplify driver code, a fixed (virtual) memory map is defined for
- * register and memory addresses. Because in the chipset, in different stages
- * of operation, those addresses will move around, an address translation
- * mechanism is required.
- *
- * There are four partitions (three memory and one register partition),
- * which are mapped to two different areas of the hardware memory.
- *
- * Virtual address
- * space
- *
- * | |
- * ...+----+--> mem.start
- * Physical address ... | |
- * space ... | | [PART_0]
- * ... | |
- * 00000000 <--+----+... ...+----+--> mem.start + mem.size
- * | | ... | |
- * |MEM | ... | |
- * | | ... | |
- * mem.size <--+----+... | | {unused area)
- * | | ... | |
- * |REG | ... | |
- * mem.size | | ... | |
- * + <--+----+... ...+----+--> reg.start
- * reg.size | | ... | |
- * |MEM2| ... | | [PART_1]
- * | | ... | |
- * ...+----+--> reg.start + reg.size
- * | |
- *
- */
-int wl1271_set_partition(struct wl1271 *wl,
- struct wl1271_partition_set *p)
-{
- /* copy partition info */
- memcpy(&wl->part, p, sizeof(*p));
-
- wl1271_debug(DEBUG_SPI, "mem_start %08X mem_size %08X",
- p->mem.start, p->mem.size);
- wl1271_debug(DEBUG_SPI, "reg_start %08X reg_size %08X",
- p->reg.start, p->reg.size);
- wl1271_debug(DEBUG_SPI, "mem2_start %08X mem2_size %08X",
- p->mem2.start, p->mem2.size);
- wl1271_debug(DEBUG_SPI, "mem3_start %08X mem3_size %08X",
- p->mem3.start, p->mem3.size);
-
- /* write partition info to the chipset */
- wl1271_raw_write32(wl, HW_PART0_START_ADDR, p->mem.start);
- wl1271_raw_write32(wl, HW_PART0_SIZE_ADDR, p->mem.size);
- wl1271_raw_write32(wl, HW_PART1_START_ADDR, p->reg.start);
- wl1271_raw_write32(wl, HW_PART1_SIZE_ADDR, p->reg.size);
- wl1271_raw_write32(wl, HW_PART2_START_ADDR, p->mem2.start);
- wl1271_raw_write32(wl, HW_PART2_SIZE_ADDR, p->mem2.size);
- wl1271_raw_write32(wl, HW_PART3_START_ADDR, p->mem3.start);
-
- return 0;
-}
-
#define WL1271_BUSY_WORD_TIMEOUT 1000
/* FIXME: Check busy words, removed due to SPI bug */
wl1271_dump(DEBUG_SPI, "spi_write buf -> ", buf, len);
}
-void wl1271_spi_read(struct wl1271 *wl, int addr, void *buf, size_t len,
- bool fixed)
+static irqreturn_t wl1271_irq(int irq, void *cookie)
{
- int physical;
+ struct wl1271 *wl;
+ unsigned long flags;
- physical = wl1271_translate_addr(wl, addr);
+ wl1271_debug(DEBUG_IRQ, "IRQ");
- wl1271_spi_raw_read(wl, physical, buf, len, fixed);
-}
+ wl = cookie;
-void wl1271_spi_write(struct wl1271 *wl, int addr, void *buf, size_t len,
- bool fixed)
-{
- int physical;
+ /* complete the ELP completion */
+ spin_lock_irqsave(&wl->wl_lock, flags);
+ if (wl->elp_compl) {
+ complete(wl->elp_compl);
+ wl->elp_compl = NULL;
+ }
- physical = wl1271_translate_addr(wl, addr);
+ ieee80211_queue_work(wl->hw, &wl->irq_work);
+ spin_unlock_irqrestore(&wl->wl_lock, flags);
- wl1271_spi_raw_write(wl, physical, buf, len, fixed);
+ return IRQ_HANDLED;
}
-u32 wl1271_spi_read32(struct wl1271 *wl, int addr)
+static void wl1271_device_release(struct device *dev)
{
- return wl1271_raw_read32(wl, wl1271_translate_addr(wl, addr));
+
}
-void wl1271_spi_write32(struct wl1271 *wl, int addr, u32 val)
+static struct platform_device wl1271_device = {
+ .name = "wl1271",
+ .id = -1,
+
+ /* device model insists to have a release function */
+ .dev = {
+ .release = wl1271_device_release,
+ },
+};
+
+static int __devinit wl1271_probe(struct spi_device *spi)
{
- wl1271_raw_write32(wl, wl1271_translate_addr(wl, addr), val);
+ struct wl12xx_platform_data *pdata;
+ struct ieee80211_hw *hw;
+ struct wl1271 *wl;
+ int ret;
+
+ pdata = spi->dev.platform_data;
+ if (!pdata) {
+ wl1271_error("no platform data");
+ return -ENODEV;
+ }
+
+ hw = wl1271_alloc_hw();
+ if (IS_ERR(hw))
+ return PTR_ERR(hw);
+
+ wl = hw->priv;
+
+ dev_set_drvdata(&spi->dev, wl);
+ wl->spi = spi;
+
+ /* 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;
+
+ ret = spi_setup(spi);
+ if (ret < 0) {
+ wl1271_error("spi_setup failed");
+ goto out_free;
+ }
+
+ wl->set_power = pdata->set_power;
+ if (!wl->set_power) {
+ wl1271_error("set power function missing in platform data");
+ ret = -ENODEV;
+ goto out_free;
+ }
+
+ wl->irq = spi->irq;
+ if (wl->irq < 0) {
+ wl1271_error("irq missing in platform data");
+ ret = -ENODEV;
+ goto out_free;
+ }
+
+ ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
+ if (ret < 0) {
+ wl1271_error("request_irq() failed: %d", ret);
+ goto out_free;
+ }
+
+ set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
+
+ disable_irq(wl->irq);
+
+ ret = platform_device_register(&wl1271_device);
+ if (ret) {
+ wl1271_error("couldn't register platform device");
+ goto out_irq;
+ }
+ dev_set_drvdata(&wl1271_device.dev, wl);
+
+ ret = wl1271_init_ieee80211(wl);
+ if (ret)
+ goto out_platform;
+
+ ret = wl1271_register_hw(wl);
+ if (ret)
+ goto out_platform;
+
+ wl1271_notice("initialized");
+
+ return 0;
+
+ out_platform:
+ platform_device_unregister(&wl1271_device);
+
+ out_irq:
+ free_irq(wl->irq, wl);
+
+ out_free:
+ ieee80211_free_hw(hw);
+
+ return ret;
}
-void wl1271_top_reg_write(struct wl1271 *wl, int addr, u16 val)
+static int __devexit wl1271_remove(struct spi_device *spi)
{
- /* write address >> 1 + 0x30000 to OCP_POR_CTR */
- addr = (addr >> 1) + 0x30000;
- wl1271_spi_write32(wl, OCP_POR_CTR, addr);
+ struct wl1271 *wl = dev_get_drvdata(&spi->dev);
+
+ platform_device_unregister(&wl1271_device);
+ free_irq(wl->irq, wl);
- /* write value to OCP_POR_WDATA */
- wl1271_spi_write32(wl, OCP_DATA_WRITE, val);
+ wl1271_free_hw(wl);
- /* write 1 to OCP_CMD */
- wl1271_spi_write32(wl, OCP_CMD, OCP_CMD_WRITE);
+ return 0;
}
-u16 wl1271_top_reg_read(struct wl1271 *wl, int addr)
-{
- u32 val;
- int timeout = OCP_CMD_LOOP;
- /* write address >> 1 + 0x30000 to OCP_POR_CTR */
- addr = (addr >> 1) + 0x30000;
- wl1271_spi_write32(wl, OCP_POR_CTR, addr);
+static struct spi_driver wl1271_spi_driver = {
+ .driver = {
+ .name = "wl1271",
+ .bus = &spi_bus_type,
+ .owner = THIS_MODULE,
+ },
- /* write 2 to OCP_CMD */
- wl1271_spi_write32(wl, OCP_CMD, OCP_CMD_READ);
+ .probe = wl1271_probe,
+ .remove = __devexit_p(wl1271_remove),
+};
- /* poll for data ready */
- do {
- val = wl1271_spi_read32(wl, OCP_DATA_READ);
- timeout--;
- } while (!(val & OCP_READY_MASK) && timeout);
+static int __init wl1271_init(void)
+{
+ int ret;
- if (!timeout) {
- wl1271_warning("Top register access timed out.");
- return 0xffff;
+ ret = spi_register_driver(&wl1271_spi_driver);
+ if (ret < 0) {
+ wl1271_error("failed to register spi driver: %d", ret);
+ goto out;
}
- /* check data status and return if OK */
- if ((val & OCP_STATUS_MASK) == OCP_STATUS_OK)
- return val & 0xffff;
- else {
- wl1271_warning("Top register access returned error.");
- return 0xffff;
- }
+out:
+ return ret;
}
+
+static void __exit wl1271_exit(void)
+{
+ spi_unregister_driver(&wl1271_spi_driver);
+
+ wl1271_notice("unloaded");
+}
+
+module_init(wl1271_init);
+module_exit(wl1271_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Luciano Coelho <luciano.coelho@nokia.com>");
+MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
+MODULE_FIRMWARE(WL1271_FW_NAME);
projects / mv-sheeva.git / blobdiff