[PATCH] rx51: add wl1251 wlan driver support

Kalle Valo
2009-10-13T16:58:13Z

From: Kalle Valo <kalle.valo-xNZwKgViW5gAvxtiuMwx3w@public.gmane.org>

wl1251 is connected to the SPI bus in rx51, add support for this.

Signed-off-by: Kalle Valo <kalle.valo-xNZwKgViW5gAvxtiuMwx3w@public.gmane.org>
---

arch/arm/mach-omap2/board-rx51-peripherals.c | 85 ++++++++++++++++++++++++++
1 files changed, 85 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index c1af532..ccb8656 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -13,6 +13,7 @@
#include <linux/platform_device.h>
#include <linux/input.h>
#include <linux/spi/spi.h>
+#include <linux/spi/wl12xx.h>
#include <linux/i2c.h>
#include <linux/i2c/twl4030.h>
#include <linux/clk.h>
@@ -36,6 +37,37 @@
#define SYSTEM_REV_B_USES_VAUX3 0x1699
#define SYSTEM_REV_S_USES_VAUX3 0x8

+#define RX51_WL1251_POWER_GPIO 87
+#define RX51_WL1251_IRQ_GPIO 42
+
+static void rx51_wl1251_set_power(bool enable);
+
+static struct wl12xx_platform_data wl1251_pdata = {
+ .set_power = rx51_wl1251_set_power,
+};
+
+static struct omap2_mcspi_device_config wl1251_mcspi_config = {
+ .turbo_mode = 0,
+ .single_channel = 1,
+};
+
+/* list all spi devices here */
+enum {
+ RX51_SPI_WL1251,
+};
+
+static struct spi_board_info rx51_peripherals_spi_board_info[] = {
+ [RX51_SPI_WL1251] = {
+ .modalias = "wl1251",
+ .bus_num = 4,
+ .chip_select = 0,
+ .max_speed_hz = 48000000,
+ .mode = SPI_MODE_2,
+ .controller_data = &wl1251_mcspi_config,
+ .platform_data = &wl1251_pdata,
+ },
+};
+
static int board_keymap[] = {
KEY(0, 0, KEY_Q),
KEY(0, 1, KEY_O),
@@ -257,6 +289,55 @@ static struct regulator_init_data rx51_vdac = {
},
};

+static void rx51_wl1251_set_power(bool enable)
+{
+ gpio_set_value(RX51_WL1251_POWER_GPIO, enable);
+}
+
+static void __init rx51_init_wl1251(void)
+{
+ int irq, ret;
+
+ ret = gpio_request(RX51_WL1251_POWER_GPIO, "wl1251 power");
+ if (ret < 0)
+ goto error;
+
+ ret = gpio_direction_output(RX51_WL1251_POWER_GPIO, 0);
+ if (ret < 0)
+ goto err_power;
+
+ ret = gpio_request(RX51_WL1251_IRQ_GPIO, "wl1251 irq");
+ if (ret < 0)
+ goto err_power;
+
+ ret = gpio_direction_input(RX51_WL1251_IRQ_GPIO);
+ if (ret < 0)
+ goto err_irq;
+
+ irq = gpio_to_irq(RX51_WL1251_IRQ_GPIO);
+ if (irq < 0)
+ goto err_irq;
+
+ rx51_peripherals_spi_board_info[RX51_SPI_WL1251].irq = irq;
+
+ return;
+
+err_irq:
+ gpio_free(RX51_WL1251_IRQ_GPIO);
+
+err_power:
+ gpio_free(RX51_WL1251_POWER_GPIO);
+
+error:
+ printk(KERN_ERR "wl1251 board initialisation failed\n");
+ wl1251_pdata.set_power = NULL;
+
+ /*
+ * Now rx51_peripherals_spi_board_info[1].irq is zero and
+ * set_power is null, and wl1251_probe() will fail.
+ */
+}
+
static int rx51_twlgpio_setup(struct device *dev, unsigned gpio, unsigned n)
{
/* FIXME this gpio setup is just a placeholder for now */
@@ -538,6 +619,10 @@ static inline void board_smc91x_init(void)

void __init rx51_peripherals_init(void)
{
+ rx51_init_wl1251();
+
+ spi_register_board_info(rx51_peripherals_spi_board_info,
+ ARRAY_SIZE(rx51_peripherals_spi_board_info));
rx51_i2c_init();
board_onenand_init();
board_smc91x_init();

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