openwrt-xburst/target/linux/lantiq/patches-3.2/0030-MIPS-lantiq-convert-falcon-gpio-to-clkdev-api.patch

From 3cb13f9992ae1948b6ca05c88d2bd25cf9e7cd41 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Thu, 8 Mar 2012 11:22:03 +0100
Subject: [PATCH 30/70] MIPS: lantiq: convert falcon gpio to clkdev api

The falcon gpio clocks used to be enabled when registering the platform device.
Move this code into the driver and use clkdev api.

Signed-off-by: John Crispin <blogic@openwrt.org>
---
 arch/mips/lantiq/falcon/devices.c |    5 -----
 arch/mips/lantiq/falcon/gpio.c    |   10 ++++++++++
 2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/arch/mips/lantiq/falcon/devices.c b/arch/mips/lantiq/falcon/devices.c
index 4f47b44..6cd7a88 100644
--- a/arch/mips/lantiq/falcon/devices.c
+++ b/arch/mips/lantiq/falcon/devices.c
@@ -111,9 +111,6 @@ falcon_register_gpio(void)
 		falcon_gpio1_res, ARRAY_SIZE(falcon_gpio1_res));
 	platform_device_register_simple("falcon_gpio", 2,
 		falcon_gpio2_res, ARRAY_SIZE(falcon_gpio2_res));
-	ltq_sysctl_activate(SYSCTL_SYS1, ACTS_PADCTRL1 | ACTS_P1);
-	ltq_sysctl_activate(SYSCTL_SYSETH, ACTS_PADCTRL0 |
-		ACTS_PADCTRL2 | ACTS_P0 | ACTS_P2);
 }
 
 void __init
@@ -123,6 +120,4 @@ falcon_register_gpio_extra(void)
 		falcon_gpio3_res, ARRAY_SIZE(falcon_gpio3_res));
 	platform_device_register_simple("falcon_gpio", 4,
 		falcon_gpio4_res, ARRAY_SIZE(falcon_gpio4_res));
-	ltq_sysctl_activate(SYSCTL_SYS1,
-		ACTS_PADCTRL3 | ACTS_PADCTRL4 | ACTS_P3 | ACTS_P4);
 }
diff --git a/arch/mips/lantiq/falcon/gpio.c b/arch/mips/lantiq/falcon/gpio.c
index a44f71b..4147d61 100644
--- a/arch/mips/lantiq/falcon/gpio.c
+++ b/arch/mips/lantiq/falcon/gpio.c
@@ -11,6 +11,7 @@
 #include <linux/interrupt.h>
 #include <linux/slab.h>
 #include <linux/export.h>
+#include <linux/err.h>
 #include <linux/platform_device.h>
 
 #include <lantiq_soc.h>
@@ -71,6 +72,7 @@ struct falcon_gpio_port {
 	void __iomem *port;
 	unsigned int irq_base;
 	unsigned int chained_irq;
+	struct clk *clk;
 };
 
 static struct falcon_gpio_port ltq_gpio_port[MAX_PORTS];
@@ -332,6 +334,14 @@ falcon_gpio_probe(struct platform_device *pdev)
 		goto err;
 	}
 
+	gpio_port->clk = clk_get(&pdev->dev, NULL);
+	if (IS_ERR(gpio_port->clk)) {
+		dev_err(&pdev->dev, "Could not get clock\n");
+		ret = PTR_ERR(gpio_port->clk);;
+		goto err;
+	}
+	clk_enable(gpio_port->clk);
+
 	if (irq > 0) {
 		/* irq_chip support */
 		gpio_port->gpio_chip.to_irq = falcon_gpio_to_irq;
-- 
1.7.7.1