From 26f45c29e3c18c6f41a6bf64c791a5dcbd239683 Mon Sep 17 00:00:00 2001
From: Tony Lindgren <tony@atomide.com>
Date: Fri, 17 May 2013 10:45:10 -0700
Subject: [PATCH] ARM: OMAP2+: Legacy support for wl12xx when booted with
 devicetree

Without WLAN we cannot switch omap4 to use device tree
only booting. This patch can be reverted when the
binding for wl12xx is added.

Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: devicetree-discuss@lists.ozlabs.org
Tested-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 arch/arm/mach-omap2/devices.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index 4269fc1..d428b95 100644
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -15,12 +15,14 @@
 #include <linux/io.h>
 #include <linux/clk.h>
 #include <linux/err.h>
+#include <linux/gpio.h>
 #include <linux/slab.h>
 #include <linux/of.h>
 #include <linux/pinctrl/machine.h>
 #include <linux/platform_data/omap4-keypad.h>
 #include <linux/platform_data/omap_ocp2scp.h>
 #include <linux/usb/omap_control_usb.h>
+#include <linux/wl12xx.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/map.h>
@@ -633,6 +635,40 @@ static void __init omap_init_ocp2scp(void)
 static inline void omap_init_ocp2scp(void) { }
 #endif
 
+#if IS_ENABLED(CONFIG_WL12XX)
+
+static struct wl12xx_platform_data wl12xx __initdata;
+
+void __init omap_init_wl12xx_of(void)
+{
+	int ret;
+
+	if (!of_have_populated_dt())
+		return;
+
+	if (of_machine_is_compatible("ti,omap4-sdp")) {
+		wl12xx.board_ref_clock = WL12XX_REFCLOCK_26;
+		wl12xx.board_tcxo_clock = WL12XX_TCXOCLOCK_26;
+		wl12xx.irq = gpio_to_irq(53);
+	} else if (of_machine_is_compatible("ti,omap4-panda")) {
+		wl12xx.board_ref_clock = WL12XX_REFCLOCK_38;
+		wl12xx.irq = gpio_to_irq(53);
+	} else {
+		return;
+	}
+
+	ret = wl12xx_set_platform_data(&wl12xx);
+	if (ret) {
+		pr_err("error setting wl12xx data: %d\n", ret);
+		return;
+	}
+}
+#else
+static inline void omap_init_wl12xx_of(void)
+{
+}
+#endif
+
 /*-------------------------------------------------------------------------*/
 
 static int __init omap2_init_devices(void)
@@ -657,6 +693,9 @@ static int __init omap2_init_devices(void)
 		omap_init_mcspi();
 		omap_init_sham();
 		omap_init_aes();
+	} else {
+		/* These can be removed when bindings are done */
+		omap_init_wl12xx_of();
 	}
 	omap_init_sti();
 	omap_init_rng();
-- 
2.7.4