Merge branch 'linus' into idle-test

1 files changed, 64 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/clock-pxa2xx.c b/arch/arm/mach-pxa/clock-pxa2xx.c
new file mode 100644
index 0000000..1ce0904
--- /dev/null
+++ b/arch/arm/mach-pxa/clock-pxa2xx.c
@@ -0,0 +1,64 @@
+/*
+ * linux/arch/arm/mach-pxa/clock-pxa2xx.c
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/sysdev.h>
+
+#include <mach/pxa2xx-regs.h>
+
+#include "clock.h"
+
+void clk_pxa2xx_cken_enable(struct clk *clk)
+{
+	CKEN |= 1 << clk->cken;
+}
+
+void clk_pxa2xx_cken_disable(struct clk *clk)
+{
+	CKEN &= ~(1 << clk->cken);
+}
+
+const struct clkops clk_pxa2xx_cken_ops = {
+	.enable		= clk_pxa2xx_cken_enable,
+	.disable	= clk_pxa2xx_cken_disable,
+};
+
+#ifdef CONFIG_PM
+static uint32_t saved_cken;
+
+static int pxa2xx_clock_suspend(struct sys_device *d, pm_message_t state)
+{
+	saved_cken = CKEN;
+	return 0;
+}
+
+static int pxa2xx_clock_resume(struct sys_device *d)
+{
+	CKEN = saved_cken;
+	return 0;
+}
+#else
+#define pxa2xx_clock_suspend	NULL
+#define pxa2xx_clock_resume	NULL
+#endif
+
+struct sysdev_class pxa2xx_clock_sysclass = {
+	.name		= "pxa2xx-clock",
+	.suspend	= pxa2xx_clock_suspend,
+	.resume		= pxa2xx_clock_resume,
+};
+
+static int __init pxa2xx_clock_init(void)
+{
+	if (cpu_is_pxa2xx())
+		return sysdev_class_register(&pxa2xx_clock_sysclass);
+	return 0;
+}
+postcore_initcall(pxa2xx_clock_init);