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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-09-12 11:14:33 -0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-09-12 11:14:33 -0400
commit25a765b7f05cb8460fa01b54568894b20e184862 (patch)
tree0b56db57b4d9f912393ab303c269e0fe6cdf8635 /arch/m68k/platform/coldfire/clk.c
parent9d2be9287107695708e6aae5105a8a518a6cb4d0 (diff)
parent64282278989d5b0398dcb3ba7904cb00c621dc35 (diff)
downloadblackbird-op-linux-25a765b7f05cb8460fa01b54568894b20e184862.tar.gz
blackbird-op-linux-25a765b7f05cb8460fa01b54568894b20e184862.zip
Merge branch 'x86/platform' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into stable/for-linus-3.7
* 'x86/platform' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (9690 commits) x86: Document x86_init.paging.pagetable_init() x86: xen: Cleanup and remove x86_init.paging.pagetable_setup_done() x86: Move paging_init() call to x86_init.paging.pagetable_init() x86: Rename pagetable_setup_start() to pagetable_init() x86: Remove base argument from x86_init.paging.pagetable_setup_start Linux 3.6-rc5 HID: tpkbd: work even if the new Lenovo Keyboard driver is not configured Remove user-triggerable BUG from mpol_to_str xen/pciback: Fix proper FLR steps. uml: fix compile error in deliver_alarm() dj: memory scribble in logi_dj Fix order of arguments to compat_put_time[spec|val] xen: Use correct masking in xen_swiotlb_alloc_coherent. xen: fix logical error in tlb flushing xen/p2m: Fix one-off error in checking the P2M tree directory. powerpc: Don't use __put_user() in patch_instruction powerpc: Make sure IPI handlers see data written by IPI senders powerpc: Restore correct DSCR in context switch powerpc: Fix DSCR inheritance in copy_thread() powerpc: Keep thread.dscr and thread.dscr_inherit in sync ...
Diffstat (limited to 'arch/m68k/platform/coldfire/clk.c')
-rw-r--r--arch/m68k/platform/coldfire/clk.c108
1 files changed, 105 insertions, 3 deletions
diff --git a/arch/m68k/platform/coldfire/clk.c b/arch/m68k/platform/coldfire/clk.c
index 44da406897e5..75f9ee967ea7 100644
--- a/arch/m68k/platform/coldfire/clk.c
+++ b/arch/m68k/platform/coldfire/clk.c
@@ -10,11 +10,17 @@
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mutex.h>
#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/err.h>
#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/mcfclk.h>
/***************************************************************************/
-
+#ifndef MCFPM_PPMCR0
struct clk *clk_get(struct device *dev, const char *id)
{
return NULL;
@@ -42,11 +48,107 @@ unsigned long clk_get_rate(struct clk *clk)
return MCF_CLK;
}
EXPORT_SYMBOL(clk_get_rate);
+#else
+static DEFINE_SPINLOCK(clk_lock);
+
+struct clk *clk_get(struct device *dev, const char *id)
+{
+ const char *clk_name = dev ? dev_name(dev) : id ? id : NULL;
+ struct clk *clk;
+ unsigned i;
+
+ for (i = 0; (clk = mcf_clks[i]) != NULL; ++i)
+ if (!strcmp(clk->name, clk_name))
+ return clk;
+ pr_warn("clk_get: didn't find clock %s\n", clk_name);
+ return ERR_PTR(-ENOENT);
+}
+EXPORT_SYMBOL(clk_get);
+
+int clk_enable(struct clk *clk)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&clk_lock, flags);
+ if ((clk->enabled++ == 0) && clk->clk_ops)
+ clk->clk_ops->enable(clk);
+ spin_unlock_irqrestore(&clk_lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL(clk_enable);
+
+void clk_disable(struct clk *clk)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&clk_lock, flags);
+ if ((--clk->enabled == 0) && clk->clk_ops)
+ clk->clk_ops->disable(clk);
+ spin_unlock_irqrestore(&clk_lock, flags);
+}
+EXPORT_SYMBOL(clk_disable);
+
+void clk_put(struct clk *clk)
+{
+ if (clk->enabled != 0)
+ pr_warn("clk_put %s still enabled\n", clk->name);
+}
+EXPORT_SYMBOL(clk_put);
+
+unsigned long clk_get_rate(struct clk *clk)
+{
+ return clk->rate;
+}
+EXPORT_SYMBOL(clk_get_rate);
+
+/***************************************************************************/
+
+void __clk_init_enabled(struct clk *clk)
+{
+ clk->enabled = 1;
+ clk->clk_ops->enable(clk);
+}
+
+void __clk_init_disabled(struct clk *clk)
+{
+ clk->enabled = 0;
+ clk->clk_ops->disable(clk);
+}
+
+static void __clk_enable0(struct clk *clk)
+{
+ __raw_writeb(clk->slot, MCFPM_PPMCR0);
+}
+
+static void __clk_disable0(struct clk *clk)
+{
+ __raw_writeb(clk->slot, MCFPM_PPMSR0);
+}
+
+struct clk_ops clk_ops0 = {
+ .enable = __clk_enable0,
+ .disable = __clk_disable0,
+};
+
+#ifdef MCFPM_PPMCR1
+static void __clk_enable1(struct clk *clk)
+{
+ __raw_writeb(clk->slot, MCFPM_PPMCR1);
+}
+
+static void __clk_disable1(struct clk *clk)
+{
+ __raw_writeb(clk->slot, MCFPM_PPMSR1);
+}
+
+struct clk_ops clk_ops1 = {
+ .enable = __clk_enable1,
+ .disable = __clk_disable1,
+};
+#endif /* MCFPM_PPMCR1 */
+#endif /* MCFPM_PPMCR0 */
struct clk *devm_clk_get(struct device *dev, const char *id)
{
return NULL;
}
EXPORT_SYMBOL(devm_clk_get);
-
-/***************************************************************************/
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