[14/15] omap: zoom: add WLAN device

Commit Message

Ohad Ben Cohen July 6, 2010, 12:37 a.m. UTC

None

Patch

diff --git a/arch/arm/mach-omap2/board-zoom-wlan.c b/arch/arm/mach-omap2/board-zoom-wlan.c
new file mode 100644
index 0000000..7ed5139
--- /dev/null
+++ b/arch/arm/mach-omap2/board-zoom-wlan.c
@@ -0,0 +1,129 @@ 
+/* mach-omap2/board-zoom-wlan.c
+ *
+ * Board support for wl1271 embedded SDIO device.
+ *
+ * Copyright (C) 2010 Texas Instruments, Inc.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/sdio_ids.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/wl12xx.h>
+
+#include "mux.h"
+
+#ifdef CONFIG_OMAP_ZOOM_WLAN
+
+/* these are zoom-specific board numbers */
+#define OMAP_ZOOM_WLAN_PMENA_GPIO	(101)
+#define OMAP_ZOOM_WLAN_IRQ_GPIO		(162)
+
+/* wl1271 virtual 'card detect' status */
+static int omap_zoom_wlan_cd;
+static void (*wlan_set_virtual_cd)(void *dev_id, int card_present);
+static void (*wlan_set_data)(void *dev_id, void *priv);
+static void *wlan_host_devid;
+
+int omap_zoom_wlan_register_embedded_control(void *dev_id,
+			void (*set_virtual_cd)(void *dev_id, int card_present),
+			void (*set_data)(void *dev_id, void *priv))
+{
+	if (wlan_host_devid || wlan_set_virtual_cd || wlan_set_data)
+		return -EBUSY;
+
+	wlan_set_virtual_cd = set_virtual_cd;
+	wlan_set_data = set_data;
+	wlan_host_devid = dev_id;
+
+	return 0;
+}
+
+int omap_zoom_wlan_get_virtual_cd(void)
+{
+	return omap_zoom_wlan_cd;
+}
+
+static void omap_zoom_wlan_set_embedded_data(void *priv)
+{
+	if (wlan_set_data)
+		wlan_set_data(wlan_host_devid, priv);
+	else
+		pr_err("%s: host controller not registered yet\n", __func__);
+}
+
+static void omap_zoom_wlan_set_carddetect(bool card_present)
+{
+	omap_zoom_wlan_cd = card_present ? 1 : 0;
+
+	pr_info("%s: %d\n", __func__, omap_zoom_wlan_cd);
+
+	if (wlan_set_virtual_cd)
+		wlan_set_virtual_cd(wlan_host_devid, omap_zoom_wlan_cd);
+	else
+		pr_err("%s: host controller not registered yet\n", __func__);
+}
+
+static void omap_zoom_wlan_power(bool enable)
+{
+	int val = enable ? 1 : 0;
+
+	pr_info("%s: set power %d\n", __func__, val);
+
+	gpio_set_value(OMAP_ZOOM_WLAN_PMENA_GPIO, val);
+}
+
+struct wl12xx_platform_data omap_zoom_wlan_control = {
+	.set_power = omap_zoom_wlan_power,
+	.set_carddetect = omap_zoom_wlan_set_carddetect,
+	.set_embedded_data = omap_zoom_wlan_set_embedded_data,
+	/* ZOOM ref clock is 26 MHz */
+	.board_ref_clock = 1,
+	.irq = OMAP_GPIO_IRQ(OMAP_ZOOM_WLAN_IRQ_GPIO),
+};
+
+static struct platform_device omap_zoom_wlan_device = {
+	.name = "wl1271_sdio",
+	.id = 1,
+	.dev = {
+		.platform_data = &omap_zoom_wlan_control,
+	},
+};
+
+int __init omap_zoom_wlan_init(void)
+{
+	int ret;
+
+	ret = gpio_request(OMAP_ZOOM_WLAN_PMENA_GPIO, "wlan_power");
+	if (ret < 0) {
+		pr_err("%s: power gpio request failed: %d\n", __func__, ret);
+		return ret;
+	}
+
+	gpio_direction_output(OMAP_ZOOM_WLAN_PMENA_GPIO, 0);
+
+	ret = gpio_request(OMAP_ZOOM_WLAN_IRQ_GPIO, "wlan_irq");
+	if (ret < 0) {
+		pr_err("%s: gpio request failed: %d\n", __func__, ret);
+		return ret;
+	}
+	gpio_direction_input(OMAP_ZOOM_WLAN_IRQ_GPIO);
+
+	ret = platform_device_register(&omap_zoom_wlan_device);
+
+	return ret;
+}
+
+#else
+int __init omap_zoom_wlan_init(void)
+{
+	return 0;
+}
+#endif /* CONFIG_OMAP_ZOOM_WLAN */
diff --git a/arch/arm/mach-omap2/include/mach/board-zoom.h b/arch/arm/mach-omap2/include/mach/board-zoom.h
index c93b29e..61bbd81 100644
--- a/arch/arm/mach-omap2/include/mach/board-zoom.h
+++ b/arch/arm/mach-omap2/include/mach/board-zoom.h
@@ -3,3 +3,8 @@ 
  */
 extern int __init zoom_debugboard_init(void);
 extern void __init zoom_peripherals_init(void);
+int __init omap_zoom_wlan_init(void);
+int omap_zoom_wlan_register_embedded_control(void *dev_id,
+			void (*set_virtual_cd)(void *dev_id, int card_present),
+			void (*set_data)(void *dev_id, void *priv));
+int omap_zoom_wlan_get_virtual_cd(void);