From cd8d3d321285a34b4e29cb7b04e552c49cc0f018 Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Sun, 11 Jan 2009 01:18:38 +0100 Subject: p54spi: p54spi driver This patch adds the p54spi driver. Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville --- drivers/net/wireless/p54/p54spi.h | 127 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 127 insertions(+) create mode 100644 drivers/net/wireless/p54/p54spi.h (limited to 'drivers/net/wireless/p54/p54spi.h') diff --git a/drivers/net/wireless/p54/p54spi.h b/drivers/net/wireless/p54/p54spi.h new file mode 100644 index 00000000000..5013ebc8712 --- /dev/null +++ b/drivers/net/wireless/p54/p54spi.h @@ -0,0 +1,127 @@ +/* + * Copyright (C) 2008 Christian Lamparter + * + * 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 +#include +#include +#include + +#include "p54.h" + +/* Bit 15 is read/write bit; ON = READ, OFF = WRITE */ +#define SPI_ADRS_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 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_CR 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 + +struct p54s_dma_regs { + __le16 cmd; + __le16 len; + __le32 addr; +} __attribute__ ((packed)); + +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; + const struct firmware *firmware; +}; + +#endif /* P54SPI_H */ -- cgit v1.2.3-70-g09d2 From a2116993c172bbb0c62f83d25cc3fe5dc7fece0d Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Fri, 16 Jan 2009 22:34:15 +0100 Subject: p54spi: remove arch specific dependencies On Friday 16 January 2009 20:33:43 Kalle Valo wrote: > N800 and N810 support is not on mainline yet, for stlc45xx I decided > to add module parameters for the gpio numbers. Here's the commit from > stlc45xx repo: > > http://gitorious.org/projects/stlc45xx/repos/mainline/commits/35afc5df0027d02d49e6f5bf986dcc4deb4ee6cf This is the same patch for p54spi. It removes all N800/N810 specific code from p54spi, so the driver can be used on other architectures, or configurations as well. Signed-off-by: Christian Lamparter Signed-off-by: John W. Linville --- drivers/net/wireless/p54/p54spi.c | 45 ++++++++++++++++++++++++--------------- drivers/net/wireless/p54/p54spi.h | 2 -- 2 files changed, 28 insertions(+), 19 deletions(-) (limited to 'drivers/net/wireless/p54/p54spi.h') diff --git a/drivers/net/wireless/p54/p54spi.c b/drivers/net/wireless/p54/p54spi.c index b8dede741ef..7fde243b3d5 100644 --- a/drivers/net/wireless/p54/p54spi.c +++ b/drivers/net/wireless/p54/p54spi.c @@ -39,6 +39,20 @@ MODULE_FIRMWARE("3826.arm"); MODULE_ALIAS("stlc45xx"); +/* + * gpios should be handled in board files and provided via platform data, + * but because it's currently impossible for p54spi to have a header file + * in include/linux, let's use module paramaters for now + */ + +static int p54spi_gpio_power = 97; +module_param(p54spi_gpio_power, int, 0444); +MODULE_PARM_DESC(p54spi_gpio_power, "gpio number for power line"); + +static int p54spi_gpio_irq = 87; +module_param(p54spi_gpio_irq, int, 0444); +MODULE_PARM_DESC(p54spi_gpio_irq, "gpio number for irq line"); + static void p54spi_spi_read(struct p54s_priv *priv, u8 address, void *buf, size_t len) { @@ -283,14 +297,14 @@ static int p54spi_upload_firmware(struct ieee80211_hw *dev) 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); + disable_irq(gpio_to_irq(p54spi_gpio_irq)); + gpio_set_value(p54spi_gpio_power, 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)); + gpio_set_value(p54spi_gpio_power, 1); + enable_irq(gpio_to_irq(p54spi_gpio_irq)); /* * need to wait a while before device can be accessed, the lenght @@ -626,9 +640,6 @@ static int __devinit p54spi_probe(struct spi_device *spi) 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; @@ -638,22 +649,22 @@ static int __devinit p54spi_probe(struct spi_device *spi) goto err_free_common; } - ret = gpio_request(priv->config->power_gpio, "p54spi power"); + ret = gpio_request(p54spi_gpio_power, "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"); + ret = gpio_request(p54spi_gpio_irq, "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); + gpio_direction_output(p54spi_gpio_power, 0); + gpio_direction_input(p54spi_gpio_irq); - ret = request_irq(OMAP_GPIO_IRQ(priv->config->irq_gpio), + ret = request_irq(gpio_to_irq(p54spi_gpio_irq), p54spi_interrupt, IRQF_DISABLED, "p54spi", priv->spi); if (ret < 0) { @@ -661,10 +672,10 @@ static int __devinit p54spi_probe(struct spi_device *spi) goto err_free_common; } - set_irq_type(gpio_to_irq(priv->config->irq_gpio), + set_irq_type(gpio_to_irq(p54spi_gpio_irq), IRQ_TYPE_EDGE_RISING); - disable_irq(gpio_to_irq(priv->config->irq_gpio)); + disable_irq(gpio_to_irq(p54spi_gpio_irq)); INIT_WORK(&priv->work, p54spi_work); init_completion(&priv->fw_comp); @@ -705,10 +716,10 @@ static int __devexit p54spi_remove(struct spi_device *spi) ieee80211_unregister_hw(priv->hw); - free_irq(gpio_to_irq(priv->config->irq_gpio), spi); + free_irq(gpio_to_irq(p54spi_gpio_irq), spi); - gpio_free(priv->config->power_gpio); - gpio_free(priv->config->irq_gpio); + gpio_free(p54spi_gpio_power); + gpio_free(p54spi_gpio_irq); release_firmware(priv->firmware); mutex_destroy(&priv->mutex); diff --git a/drivers/net/wireless/p54/p54spi.h b/drivers/net/wireless/p54/p54spi.h index 5013ebc8712..7fbe8d8fc67 100644 --- a/drivers/net/wireless/p54/p54spi.h +++ b/drivers/net/wireless/p54/p54spi.h @@ -25,7 +25,6 @@ #include #include #include -#include #include "p54.h" @@ -108,7 +107,6 @@ struct p54s_priv { struct p54_common common; struct ieee80211_hw *hw; struct spi_device *spi; - const struct omap_wlan_cx3110x_config *config; struct work_struct work; -- cgit v1.2.3-70-g09d2