This patch adds the p54spi driver itself. Again: If you don't know what you're doing, don't do anything ;-) --- diff -Nurp a/drivers/net/wireless/p54/Kconfig b/drivers/net/wireless/p54/Kconfig --- a/drivers/net/wireless/p54/Kconfig 2008-12-19 16:19:20.000000000 +0100 +++ b/drivers/net/wireless/p54/Kconfig 2008-12-19 16:40:55.000000000 +0100 @@ -61,3 +61,12 @@ config P54_PCI http://prism54.org/ If you choose to build a module, it'll be called p54pci. + +config P54_SPI + tristate "Prism54 SPI (stlc45xx) support" + depends on P54_COMMON && SPI_MASTER + ---help--- + This driver is for stlc4550 or stlc4560 based wireless chips. + This driver is highly experimental and untested. + + If you choose to build a module, it'll be called p54spi. diff -Nurp a/drivers/net/wireless/p54/Makefile b/drivers/net/wireless/p54/Makefile --- a/drivers/net/wireless/p54/Makefile 2008-12-19 16:52:34.000000000 +0100 +++ b/drivers/net/wireless/p54/Makefile 2008-12-19 16:13:00.000000000 +0100 @@ -1,3 +1,4 @@ obj-$(CONFIG_P54_COMMON) += p54common.o obj-$(CONFIG_P54_USB) += p54usb.o obj-$(CONFIG_P54_PCI) += p54pci.o +obj-$(CONFIG_P54_SPI) += p54spi.o diff -Nurp a/drivers/net/wireless/p54/p54common.c b/drivers/net/wireless/p54/p54common.c --- a/drivers/net/wireless/p54/p54common.c 2008-12-19 16:22:57.000000000 +0100 +++ b/drivers/net/wireless/p54/p54common.c 2008-12-19 16:21:07.000000000 +0100 @@ -398,7 +398,7 @@ static int p54_parse_output_power_limits return 0; } -static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len) +int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len) { struct p54_common *priv = dev->priv; struct eeprom_pda_wrap *wrap = NULL; @@ -622,6 +622,7 @@ static int p54_parse_eeprom(struct ieee8 wiphy_name(dev->wiphy)); return err; } +EXPORT_SYMBOL_GPL(p54_parse_eeprom); static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi) { diff -Nurp a/drivers/net/wireless/p54/p54common.h b/drivers/net/wireless/p54/p54common.h --- a/drivers/net/wireless/p54/p54common.h 2008-12-19 16:19:20.000000000 +0100 +++ b/drivers/net/wireless/p54/p54common.h 2008-12-19 16:13:00.000000000 +0100 @@ -278,12 +278,6 @@ struct pda_custom_wrapper { #define PDR_COUNTRY_CERT_IODOOR_OUTDOOR 0x30 #define PDR_COUNTRY_CERT_INDEX 0x0F -/* stored in skb->cb */ -struct memrecord { - u32 start_addr; - u32 end_addr; -}; - struct p54_eeprom_lm86 { union { struct { diff -Nurp a/drivers/net/wireless/p54/p54.h b/drivers/net/wireless/p54/p54.h --- a/drivers/net/wireless/p54/p54.h 2008-12-19 16:19:20.000000000 +0100 +++ b/drivers/net/wireless/p54/p54.h 2008-12-19 16:13:00.000000000 +0100 @@ -84,6 +84,21 @@ struct p54_rssi_linear_approximation { #define FW_LM87 0x4c4d3837 #define FW_LM20 0x4c4d3230 +enum fw_state { + FW_STATE_OFF, + FW_STATE_BOOTING, + FW_STATE_READY, + FW_STATE_RESET, + FW_STATE_RESETTING, +}; + +/* stored in skb->cb */ +struct memrecord { + u32 start_addr; + u32 end_addr; + u8 driver_data[16]; +}; + struct p54_common { struct ieee80211_hw *hw; u32 rx_start; @@ -132,6 +147,7 @@ struct p54_common { int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb); void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb); int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw); +int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len); int p54_read_eeprom(struct ieee80211_hw *dev); struct ieee80211_hw *p54_init_common(size_t priv_data_len); void p54_free_common(struct ieee80211_hw *dev); diff -Nurp a/drivers/net/wireless/p54/p54spi.c b/drivers/net/wireless/p54/p54spi.c --- a/drivers/net/wireless/p54/p54spi.c 1970-01-01 01:00:00.000000000 +0100 +++ b/drivers/net/wireless/p54/p54spi.c 2008-12-19 16:37:09.000000000 +0100 @@ -0,0 +1,774 @@ +/* + * Copyright (C) 2008 Christian Lamparter <chunkeey@xxxxxx> + * + * This driver is a port from stlc45xx: + * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h> +#include <linux/firmware.h> +#include <linux/delay.h> +#include <linux/irq.h> +#include <linux/spi/spi.h> +#include <linux/etherdevice.h> +#include <linux/gpio.h> + +#include "p54spi.h" +#include "p54spi_eeprom.h" +#include "p54.h" + +#include "p54common.h" + +MODULE_FIRMWARE("3826.arm"); +MODULE_ALIAS("stlc45xx"); + +static void p54spi_spi_read(struct p54s_priv *priv, unsigned long addr, + void *buf, size_t len) +{ + struct spi_transfer t[2]; + struct spi_message m; + + /* We first push the address */ + addr = (addr << 8) | ADDR_READ_BIT_15; + + spi_message_init(&m); + memset(t, 0, sizeof(t)); + + t[0].tx_buf = &addr; + t[0].len = 2; + spi_message_add_tail(&t[0], &m); + + t[1].rx_buf = buf; + t[1].len = len; + spi_message_add_tail(&t[1], &m); + + spi_sync(priv->spi, &m); +} + + +static void p54spi_spi_write(struct p54s_priv *priv, unsigned long addr, + void *buf, size_t len) +{ + struct spi_transfer t[3]; + struct spi_message m; + u16 last_word; + + /* We first push the address */ + addr = addr << 8; + + spi_message_init(&m); + memset(t, 0, sizeof(t)); + + t[0].tx_buf = &addr; + t[0].len = 2; + spi_message_add_tail(&t[0], &m); + + t[1].tx_buf = buf; + t[1].len = len; + spi_message_add_tail(&t[1], &m); + + if (len % 2) { + last_word = ((u8 *)buf)[len - 1]; + + t[2].tx_buf = &last_word; + t[2].len = 2; + spi_message_add_tail(&t[2], &m); + } + + spi_sync(priv->spi, &m); +} + +static u16 p54spi_read16(struct p54s_priv *priv, unsigned long addr) +{ + u16 val; + + p54spi_spi_read(priv, addr, &val, sizeof(val)); + + return val; +} + +static u32 p54spi_read32(struct p54s_priv *priv, unsigned long addr) +{ + u32 val; + + p54spi_spi_read(priv, addr, &val, sizeof(val)); + + return val; +} + +static void p54spi_write16(struct p54s_priv *priv, unsigned long addr, u16 val) +{ + p54spi_spi_write(priv, addr, &val, sizeof(val)); +} + +static void p54spi_write32(struct p54s_priv *priv, unsigned long addr, u32 val) +{ + p54spi_spi_write(priv, addr, &val, sizeof(val)); +} + +struct p54spi_spi_reg { + u16 address; /* __le16 ? */ + u16 length; + char *name; +}; + +static const struct p54spi_spi_reg p54spi_registers_array[] = +{ + { SPI_ADRS_ARM_INTERRUPTS, 32, "ARM_INT " }, + { SPI_ADRS_ARM_INT_EN, 32, "ARM_INT_ENA " }, + { SPI_ADRS_HOST_INTERRUPTS, 32, "HOST_INT " }, + { SPI_ADRS_HOST_INT_EN, 32, "HOST_INT_ENA" }, + { SPI_ADRS_HOST_INT_ACK, 32, "HOST_INT_ACK" }, + { SPI_ADRS_GEN_PURP_1, 32, "GP1_COMM " }, + { SPI_ADRS_GEN_PURP_2, 32, "GP2_COMM " }, + { SPI_ADRS_DEV_CTRL_STAT, 32, "DEV_CTRL_STA" }, + { SPI_ADRS_DMA_DATA, 16, "DMA_DATA " }, + { SPI_ADRS_DMA_WRITE_CTRL, 16, "DMA_WR_CTRL " }, + { SPI_ADRS_DMA_WRITE_LEN, 16, "DMA_WR_LEN " }, + { SPI_ADRS_DMA_WRITE_BASE, 32, "DMA_WR_BASE " }, + { SPI_ADRS_DMA_READ_CTRL, 16, "DMA_RD_CTRL " }, + { SPI_ADRS_DMA_READ_LEN, 16, "DMA_RD_LEN " }, + { SPI_ADRS_DMA_WRITE_BASE, 32, "DMA_RD_BASE " } +}; + +static int p54spi_wait_bit(struct p54s_priv *priv, u16 reg, u32 mask, + u32 expected) +{ + int i; + char buffer[4]; + + for (i = 0; i < 2000; i++) { + p54spi_spi_read(priv, reg, buffer, sizeof(buffer)); + if (((*(u32 *) buffer) & mask) == expected) + return 1; + + msleep(1); + } + return 0; +} + +static int p54spi_request_firmware(struct ieee80211_hw *dev) +{ + struct p54s_priv *priv = dev->priv; + const struct firmware *fw; + int ret; + + /* FIXME: should driver use it's own struct device? */ + ret = request_firmware(&fw, "3826.arm", &priv->spi->dev); + + if (ret < 0) { + dev_err(&priv->spi->dev, "request_firmware() failed: %d", ret); + return ret; + } + + ret = p54_parse_firmware(dev, fw); + if (ret) { + release_firmware(fw); + return ret; + } + + priv->fw = kmemdup(fw->data, fw->size, GFP_KERNEL); + if (!priv->fw) { + dev_err(&priv->spi->dev, "could not get memory for firmware"); + release_firmware(fw); + return -ENOMEM; + } + + priv->fw_len = fw->size; + + release_firmware(fw); + return 0; +} + +static int p54spi_request_eeprom(struct ieee80211_hw *dev) +{ + struct p54s_priv *priv = dev->priv; + const struct firmware *eeprom; + int ret; + + /* + * allow users to customize their eeprom. + */ + + ret = request_firmware(&eeprom, "3826.eeprom", &priv->spi->dev); + if (ret < 0) { + dev_info(&priv->spi->dev, "loading default eeprom...\n"); + ret = p54_parse_eeprom(dev, (void *) p54spi_eeprom, + sizeof(p54spi_eeprom)); + } else { + dev_info(&priv->spi->dev, "loading user eeprom...\n"); + ret = p54_parse_eeprom(dev, (void *) eeprom->data, + (int)eeprom->size); + release_firmware(eeprom); + } + return ret; +} + +static int p54spi_upload_firmware(struct ieee80211_hw *dev) +{ + struct p54s_priv *priv = dev->priv; + struct s_dma_regs dma_regs; + unsigned long fw_len, fw_addr; + long _fw_len; + int ret; + + if (!priv->fw) { + ret = p54spi_request_firmware(dev); + if (ret < 0) + return ret; + } + + /* stop the device */ + p54spi_write16(priv, SPI_ADRS_DEV_CTRL_STAT, + SPI_CTRL_STAT_HOST_OVERRIDE | SPI_CTRL_STAT_HOST_RESET | + SPI_CTRL_STAT_START_HALTED); + + msleep(TARGET_BOOT_SLEEP); + + p54spi_write16(priv, SPI_ADRS_DEV_CTRL_STAT, + SPI_CTRL_STAT_HOST_OVERRIDE | + SPI_CTRL_STAT_START_HALTED); + + msleep(TARGET_BOOT_SLEEP); + + fw_addr = FIRMWARE_ADDRESS; + fw_len = priv->fw_len; + + while (fw_len > 0) { + _fw_len = (fw_len > SPI_MAX_PACKET_SIZE) + ? SPI_MAX_PACKET_SIZE : fw_len; + dma_regs.cmd = SPI_DMA_WRITE_CTRL_ENABLE; + dma_regs.len = cpu_to_le16(_fw_len); + dma_regs.addr = cpu_to_le32(fw_addr); + + fw_len -= _fw_len; + fw_addr += _fw_len; + + p54spi_write16(priv, SPI_ADRS_DMA_WRITE_CTRL, dma_regs.cmd); + + if (p54spi_wait_bit(priv, SPI_ADRS_DMA_WRITE_CTRL, + HOST_ALLOWED, HOST_ALLOWED) == 0) { + dev_err(&priv->spi->dev, "fw_upload not allowed " + "to DMA write."); + return -EAGAIN; + } + + p54spi_write16(priv, SPI_ADRS_DMA_WRITE_LEN, dma_regs.len); + p54spi_write32(priv, SPI_ADRS_DMA_WRITE_BASE, dma_regs.addr); + + p54spi_spi_write(priv, SPI_ADRS_DMA_DATA, priv->fw, _fw_len); + + /* FIXME: I think this doesn't work if firmware is large, + * this loop goes to second round. fw->data is not + * increased at all! */ + } + + BUG_ON(fw_len != 0); + + /* enable host interrupts */ + p54spi_write32(priv, SPI_ADRS_HOST_INT_EN, SPI_HOST_INTS_DEFAULT); + + /* boot the device */ + p54spi_write16(priv, SPI_ADRS_DEV_CTRL_STAT, + SPI_CTRL_STAT_HOST_OVERRIDE | SPI_CTRL_STAT_HOST_RESET | + SPI_CTRL_STAT_RAM_BOOT); + + msleep(TARGET_BOOT_SLEEP); + + p54spi_write16(priv, SPI_ADRS_DEV_CTRL_STAT, + SPI_CTRL_STAT_HOST_OVERRIDE | SPI_CTRL_STAT_RAM_BOOT); + msleep(TARGET_BOOT_SLEEP); + return 0; +} + +static void p54spi_power_off(struct p54s_priv *priv) +{ + disable_irq(gpio_to_irq(priv->config->irq_gpio)); + gpio_set_value(priv->config->power_gpio, 0); +} + +static void p54spi_power_on(struct p54s_priv *priv) +{ + gpio_set_value(priv->config->power_gpio, 1); + enable_irq(gpio_to_irq(priv->config->irq_gpio)); + + /* + * need to wait a while before device can be accessed, the lenght + * is just a guess + */ + msleep(10); +} + +static void p54spi_int_ack(struct p54s_priv *priv, u32 val) +{ + p54spi_write32(priv, SPI_ADRS_HOST_INT_ACK, val); +} + +static void p54spi_wakeup(struct p54s_priv *priv) +{ + unsigned long timeout; + u32 ints; + + /* wake the chip */ + p54spi_write32(priv, SPI_ADRS_ARM_INTERRUPTS, SPI_TARGET_INT_WAKEUP); + + /* And wait for the READY interrupt */ + timeout = jiffies + HZ; + + ints = p54spi_read32(priv, SPI_ADRS_HOST_INTERRUPTS); + while (!(ints & SPI_HOST_INT_READY)) { + if (time_after(jiffies, timeout)) + goto out; + ints = p54spi_read32(priv, SPI_ADRS_HOST_INTERRUPTS); + } + + p54spi_int_ack(priv, SPI_HOST_INT_READY); + +out: + return; +} + +static void p54spi_sleep(struct p54s_priv *priv) +{ + p54spi_write32(priv, SPI_ADRS_ARM_INTERRUPTS, SPI_TARGET_INT_SLEEP); +} + +static void p54spi_int_ready(struct p54s_priv *priv) +{ + p54spi_write32(priv, SPI_ADRS_HOST_INT_EN, + SPI_HOST_INT_UPDATE | SPI_HOST_INT_SW_UPDATE); + + switch (priv->fw_state) { + case FW_STATE_BOOTING: + priv->fw_state = FW_STATE_READY; + complete(&priv->fw_comp); + break; + case FW_STATE_RESETTING: + priv->fw_state = FW_STATE_READY; + /* TODO: reinitialize state */ + break; + default: + break; + } +} + +static int p54spi_rx(struct p54s_priv *priv) +{ + struct sk_buff *skb; + u16 len; + + p54spi_wakeup(priv); + + /* dummy read to flush SPI DMA controller bug */ + p54spi_read16(priv, SPI_ADRS_GEN_PURP_1); + + len = p54spi_read16(priv, SPI_ADRS_DMA_DATA); + + if (len == 0) { + dev_err(&priv->spi->dev, "rx request of zero bytes"); + return 0; + } + + skb = dev_alloc_skb(len); + if (!skb) { + dev_err(&priv->spi->dev, "could not alloc skb"); + return 0; + } + + p54spi_spi_read(priv, SPI_ADRS_DMA_DATA, skb_put(skb, len), len); + p54spi_sleep(priv); + + if (p54_rx(priv->hw, skb) == 0) + dev_kfree_skb(skb); + + return 0; +} + + +static irqreturn_t p54spi_interrupt(int irq, void *config) +{ + struct spi_device *spi = config; + struct p54s_priv *priv = dev_get_drvdata(&spi->dev); + + queue_work(priv->hw->workqueue, &priv->work); + + return IRQ_HANDLED; +} + +static int p54spi_tx_frame(struct p54s_priv *priv, struct sk_buff *skb) +{ + struct p54_hdr *hdr = (struct p54_hdr *) skb->data; + struct s_dma_regs dma_regs; + unsigned long timeout; + int ret = 0; + u32 ints; + + p54spi_wakeup(priv); + + dma_regs.cmd = SPI_DMA_WRITE_CTRL_ENABLE; + dma_regs.len = cpu_to_le16(skb->len); + dma_regs.addr = cpu_to_le32(hdr->req_id); + + p54spi_spi_write(priv, SPI_ADRS_DMA_WRITE_CTRL, &dma_regs, + sizeof(dma_regs)); + + p54spi_spi_write(priv, SPI_ADRS_DMA_DATA, skb->data, skb->len); + + timeout = jiffies + 2 * HZ; + ints = p54spi_read32(priv, SPI_ADRS_HOST_INTERRUPTS); + while (!(ints & SPI_HOST_INT_WR_READY)) { + if (time_after(jiffies, timeout)) { + dev_err(&priv->spi->dev, "WR_READY timeout"); + ret = -1; + goto out; + } + ints = p54spi_read32(priv, SPI_ADRS_HOST_INTERRUPTS); + } + + p54spi_int_ack(priv, SPI_HOST_INT_WR_READY); + p54spi_sleep(priv); + +out: + if (FREE_AFTER_TX(skb)) + p54_free_skb(priv->hw, skb); + return ret; +} + +static int p54spi_wq_tx(struct p54s_priv *priv) +{ + struct p54s_tx_info *entry; + struct sk_buff *skb; + struct ieee80211_tx_info *info; + struct memrecord *range; + struct p54s_tx_info *dinfo; + int ret = 0; + + spin_lock_bh(&priv->tx_lock); + + while (!list_empty(&priv->tx_pending)) { + entry = list_entry(priv->tx_pending.next, + struct p54s_tx_info, tx_list); + + list_del_init(&entry->tx_list); + + spin_unlock_bh(&priv->tx_lock); + + dinfo = container_of((void *) entry, struct p54s_tx_info, + tx_list); + range = container_of((void *) dinfo, struct memrecord, + driver_data); + info = container_of((void *) range, struct ieee80211_tx_info, + rate_driver_data); + skb = container_of((void *) info, struct sk_buff, cb); + + ret = p54spi_tx_frame(priv, skb); + + spin_lock_bh(&priv->tx_lock); + + if (ret < 0) { + p54_free_skb(priv->hw, skb); + goto out; + } + } + +out: + spin_unlock_bh(&priv->tx_lock); + return ret; +} + +static void p54spi_op_tx(struct ieee80211_hw *dev, struct sk_buff *skb) +{ + struct p54s_priv *priv = dev->priv; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct memrecord *range = (struct memrecord *) info->rate_driver_data; + struct p54s_tx_info *dinfo = (struct p54s_tx_info *) + range->driver_data; + + BUILD_BUG_ON(sizeof(*dinfo) > sizeof((range->driver_data))); + + spin_lock_bh(&priv->tx_lock); + list_add_tail(&dinfo->tx_list, &priv->tx_pending); + spin_unlock_bh(&priv->tx_lock); + + queue_work(priv->hw->workqueue, &priv->work); +} + +static void p54spi_work(struct work_struct *work) +{ + struct p54s_priv *priv = container_of(work, struct p54s_priv, work); + u32 ints; + int ret; + + mutex_lock(&priv->mutex); + + if (priv->fw_state == FW_STATE_OFF && + priv->fw_state == FW_STATE_RESET) + goto out; + + ints = p54spi_read32(priv, SPI_ADRS_HOST_INTERRUPTS); + + if (ints & SPI_HOST_INT_READY) { + p54spi_int_ready(priv); + p54spi_int_ack(priv, SPI_HOST_INT_READY); + } + + if (priv->fw_state != FW_STATE_READY) + goto out; + + if (ints & SPI_HOST_INT_UPDATE) { + p54spi_int_ack(priv, SPI_HOST_INT_UPDATE); + ret = p54spi_rx(priv); + if (ret < 0) + goto out; + } + if (ints & SPI_HOST_INT_SW_UPDATE) { + p54spi_int_ack(priv, SPI_HOST_INT_SW_UPDATE); + ret = p54spi_rx(priv); + if (ret < 0) + goto out; + } + + ret = p54spi_wq_tx(priv); + if (ret < 0) + goto out; + + ints = p54spi_read32(priv, SPI_ADRS_HOST_INTERRUPTS); + +out: + mutex_unlock(&priv->mutex); +} + +static int p54spi_op_start(struct ieee80211_hw *dev) +{ + struct p54s_priv *priv = dev->priv; + unsigned long timeout; + int ret = 0; + + if (mutex_lock_interruptible(&priv->mutex)) { + ret = -EINTR; + goto out; + } + + priv->fw_state = FW_STATE_BOOTING; + + p54spi_power_on(priv); + + ret = p54spi_upload_firmware(dev); + if (ret < 0) { + p54spi_power_off(priv); + goto out_unlock; + } + + mutex_unlock(&priv->mutex); + + timeout = msecs_to_jiffies(2000); + timeout = wait_for_completion_interruptible_timeout(&priv->fw_comp, + timeout); + if (!timeout) { + dev_err(&priv->spi->dev, "firmware boot failed"); + p54spi_power_off(priv); + ret = -1; + goto out; + } + + if (mutex_lock_interruptible(&priv->mutex)) { + ret = -EINTR; + p54spi_power_off(priv); + goto out; + } + + WARN_ON(priv->fw_state != FW_STATE_READY); + +out_unlock: + mutex_unlock(&priv->mutex); + +out: + return ret; +} + +static void p54spi_op_stop(struct ieee80211_hw *dev) +{ + struct p54s_priv *priv = dev->priv; + + if (mutex_lock_interruptible(&priv->mutex)) { + /* FIXME: how to handle this error? */ + return; + } + + WARN_ON(priv->fw_state != FW_STATE_READY); + + cancel_work_sync(&priv->work); + + p54spi_power_off(priv); + spin_lock_bh(&priv->tx_lock); + INIT_LIST_HEAD(&priv->tx_pending); + spin_unlock_bh(&priv->tx_lock); + + priv->fw_state = FW_STATE_OFF; + mutex_unlock(&priv->mutex); +} + +static int __devinit p54spi_probe(struct spi_device *spi) +{ + struct p54s_priv *priv = NULL; + struct ieee80211_hw *hw; + int ret = -EINVAL; + + hw = p54_init_common(sizeof(*priv)); + if (!hw) { + dev_err(&priv->spi->dev, "could not alloc ieee80211_hw"); + return -ENOMEM; + } + + priv = hw->priv; + priv->hw = hw; + dev_set_drvdata(&spi->dev, priv); + priv->spi = spi; + + priv->config = omap_get_config(OMAP_TAG_WLAN_CX3110X, + struct omap_wlan_cx3110x_config); + + spi->bits_per_word = 16; + spi->max_speed_hz = 24000000; + + ret = spi_setup(spi); + if (ret < 0) { + dev_err(&priv->spi->dev, "spi_setup failed"); + goto err_free_common; + } + + ret = gpio_request(priv->config->power_gpio, "p54spi power"); + if (ret < 0) { + dev_err(&priv->spi->dev, "power GPIO request failed: %d", ret); + goto err_free_common; + } + + ret = gpio_request(priv->config->irq_gpio, "p54spi irq"); + if (ret < 0) { + dev_err(&priv->spi->dev, "irq GPIO request failed: %d", ret); + goto err_free_common; + } + + gpio_direction_output(priv->config->power_gpio, 0); + gpio_direction_input(priv->config->irq_gpio); + + ret = request_irq(OMAP_GPIO_IRQ(priv->config->irq_gpio), + p54spi_interrupt, IRQF_DISABLED, "p54spi", + priv->spi); + if (ret < 0) { + dev_err(&priv->spi->dev, "request_irq() failed"); + goto err_free_common; + } + + set_irq_type(gpio_to_irq(priv->config->irq_gpio), + IRQ_TYPE_EDGE_RISING); + + disable_irq(gpio_to_irq(priv->config->irq_gpio)); + + INIT_WORK(&priv->work, p54spi_work); + init_completion(&priv->fw_comp); + INIT_LIST_HEAD(&priv->tx_pending); + mutex_init(&priv->mutex); + SET_IEEE80211_DEV(hw, &spi->dev); + priv->common.open = p54spi_op_start; + priv->common.stop = p54spi_op_stop; + priv->common.tx = p54spi_op_tx; + + ret = p54spi_request_firmware(hw); + if (ret < 0) + goto err_free_common; + + ret = p54spi_request_eeprom(hw); + if (ret) + goto err_free_common; + + ret = ieee80211_register_hw(hw); + if (ret) { + dev_err(&priv->spi->dev, "unable to register " + "mac80211 hw: %d", ret); + goto err_free_common; + } + + dev_info(&priv->spi->dev, "device is bound to %s\n", + wiphy_name(hw->wiphy)); + return 0; + +err_free_common: + p54_free_common(priv->hw); + return ret; +} + +static int __devexit p54spi_remove(struct spi_device *spi) +{ + struct p54s_priv *priv = dev_get_drvdata(&spi->dev); + + ieee80211_unregister_hw(priv->hw); + + free_irq(gpio_to_irq(priv->config->irq_gpio), spi); + + gpio_free(priv->config->power_gpio); + gpio_free(priv->config->irq_gpio); + kfree(priv->fw); + + mutex_destroy(&priv->mutex); + + p54_free_common(priv->hw); + ieee80211_free_hw(priv->hw); + + return 0; +} + + +static struct spi_driver p54spi_driver = { + .driver = { + /* use cx3110x name because board-n800.c uses that for the + * SPI port */ + .name = "cx3110x", + .bus = &spi_bus_type, + .owner = THIS_MODULE, + }, + + .probe = p54spi_probe, + .remove = __devexit_p(p54spi_remove), +}; + +static int __init p54spi_init(void) +{ + int ret; + + ret = spi_register_driver(&p54spi_driver); + if (ret < 0) { + printk(KERN_ERR "failed to register SPI driver: %d", ret); + goto out; + } + + out: + return ret; +} + +static void __exit p54spi_exit(void) +{ + spi_unregister_driver(&p54spi_driver); +} + +module_init(p54spi_init); +module_exit(p54spi_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Christian Lamparter <chunkeey@xxxxxx>"); diff -Nurp a/drivers/net/wireless/p54/p54spi.h b/drivers/net/wireless/p54/p54spi.h --- a/drivers/net/wireless/p54/p54spi.h 1970-01-01 01:00:00.000000000 +0100 +++ b/drivers/net/wireless/p54/p54spi.h 2008-12-19 16:31:06.000000000 +0100 @@ -0,0 +1,134 @@ +/* + * Copyright (C) 2008 Christian Lamparter <chunkeey@xxxxxx> + * + * This driver is a port from stlc45xx: + * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies). + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ + +#ifndef P54SPI_H +#define P54SPI_H + +#include <linux/mutex.h> +#include <linux/list.h> +#include <net/mac80211.h> +#include <mach/board.h> + +#include "p54.h" + +/* Bit 15 is read/write bit; ON = READ, OFF = WRITE */ +#define ADDR_READ_BIT_15 0x8000 + +#define SPI_ADRS_ARM_INTERRUPTS 0x00 +#define SPI_ADRS_ARM_INT_EN 0x04 + +#define SPI_ADRS_HOST_INTERRUPTS 0x08 +#define SPI_ADRS_HOST_INT_EN 0x0c +#define SPI_ADRS_HOST_INT_ACK 0x10 + +#define SPI_ADRS_GEN_PURP_1 0x14 +#define SPI_ADRS_GEN_PURP_2 0x18 + +#define SPI_ADRS_DEV_CTRL_STAT 0x26 /* high word */ + +#define SPI_ADRS_DMA_DATA 0x28 + +#define SPI_ADRS_DMA_WRITE_CTRL 0x2c +#define SPI_ADRS_DMA_WRITE_LEN 0x2e +#define SPI_ADRS_DMA_WRITE_BASE 0x30 + +#define SPI_ADRS_DMA_READ_CTRL 0x34 +#define SPI_ADRS_DMA_READ_LEN 0x36 +#define SPI_ADRS_DMA_READ_BASE 0x38 + +#define SPI_CTRL_STAT_HOST_OVERRIDE 0x8000 +#define SPI_CTRL_STAT_START_HALTED 0x4000 +#define SPI_CTRL_STAT_RAM_BOOT 0x2000 +#define SPI_CTRL_STAT_HOST_RESET 0x1000 +#define SPI_CTRL_STAT_HOST_CPU_EN 0x0800 + +#define SPI_DMA_WRITE_CTRL_ENABLE 0x0001 +#define SPI_DMA_READ_CTRL_ENABLE 0x0001 +#define HOST_ALLOWED (1 << 7) + +#define FIRMWARE_ADDRESS 0x20000 + +#define SPI_TIMEOUT 100 /* msec */ + +#define SPI_MAX_TX_PACKETS 32 + +#define SPI_MAX_PACKET_SIZE 32767 + +#define SPI_TARGET_INT_WAKEUP 0x00000001 +#define SPI_TARGET_INT_SLEEP 0x00000002 +#define SPI_TARGET_INT_RDDONE 0x00000004 + +#define SPI_TARGET_INT_CTS 0x00004000 +#define SPI_TARGET_INT_DR 0x00008000 + +#define SPI_HOST_INT_READY 0x00000001 +#define SPI_HOST_INT_WR_READY 0x00000002 +#define SPI_HOST_INT_SW_UPDATE 0x00000004 +#define SPI_HOST_INT_UPDATE 0x10000000 + +/* clear to send */ +#define SPI_HOST_INT_CTS 0x00004000 + +/* data ready */ +#define SPI_HOST_INT_DR 0x00008000 + +#define SPI_HOST_INTS_DEFAULT \ + (SPI_HOST_INT_READY | SPI_HOST_INT_UPDATE | SPI_HOST_INT_SW_UPDATE) + +#define TARGET_BOOT_SLEEP 50 + +/* unit is ms */ +#define TX_FRAME_LIFETIME 2000 +#define TX_TIMEOUT 4000 + +struct s_dma_regs { + __le16 cmd; + __le16 len; + __le32 addr; +}; + +struct p54s_tx_info { + struct list_head tx_list; +}; + +struct p54s_priv { + /* p54_common has to be the first entry */ + struct p54_common common; + struct ieee80211_hw *hw; + struct spi_device *spi; + const struct omap_wlan_cx3110x_config *config; + + struct work_struct work; + + struct mutex mutex; + struct completion fw_comp; + + spinlock_t tx_lock; + + /* protected by tx_lock */ + struct list_head tx_pending; + + enum fw_state fw_state; + u8 *fw; + int fw_len; +}; + +#endif /* P54SPI_H */ -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
