[ARM] integrator: convert to clkdev and lookup clocks by device name

People often point to the Integrator/Versatile/Realview
implementations to justify using the consumer name as the sole
selector for clocks.

Eliminate this excuse by changing the Integrator implementation, so
it provides a better example of how it should be done.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 16 insertions, 10 deletions

diff --git a/arch/arm/mach-integrator/impd1.c b/arch/arm/mach-integrator/impd1.c
index 172299a78302..0058c937719e 100644
--- a/arch/arm/mach-integrator/impd1.c
+++ b/arch/arm/mach-integrator/impd1.c
@@ -22,13 +22,13 @@
 #include <linux/amba/clcd.h>
 #include <linux/io.h>
 
+#include <asm/clkdev.h>
+#include <mach/clkdev.h>
 #include <asm/hardware/icst525.h>
 #include <mach/lm.h>
 #include <mach/impd1.h>
 #include <asm/sizes.h>
 
-#include "clock.h"
-
 static int module_id;
 
 module_param_named(lmid, module_id, int, 0444);
@@ -37,6 +37,7 @@ MODULE_PARM_DESC(lmid, "logic module stack position");
 struct impd1_module {
 	void __iomem	*base;
 	struct clk	vcos[2];
+	struct clk_lookup *clks[3];
 };
 
 static const struct icst525_params impd1_vco_params = {
@@ -339,9 +340,8 @@ static struct impd1_device impd1_devs[] = {
 	}
 };
 
-static const char *impd1_vconames[2] = {
-	"CLCDCLK",
-	"AUXVCO2",
+static struct clk fixed_14745600 = {
+	.rate = 14745600,
 };
 
 static int impd1_probe(struct lm_device *dev)
@@ -374,14 +374,20 @@ static int impd1_probe(struct lm_device *dev)
 
 	for (i = 0; i < ARRAY_SIZE(impd1->vcos); i++) {
 		impd1->vcos[i].owner = THIS_MODULE,
-		impd1->vcos[i].name = impd1_vconames[i],
 		impd1->vcos[i].params = &impd1_vco_params,
 		impd1->vcos[i].data = impd1,
 		impd1->vcos[i].setvco = impd1_setvco;
-
-		clk_register(&impd1->vcos[i]);
 	}
 
+	impd1->clks[0] = clkdev_alloc(&impd1->vcos[0], NULL, "lm%x:01000",
+					dev->id);
+	impd1->clks[1] = clkdev_alloc(&fixed_14745600, NULL, "lm%x:00100",
+					dev->id);
+	impd1->clks[2] = clkdev_alloc(&fixed_14745600, NULL, "lm%x:00200",
+					dev->id);
+	for (i = 0; i < ARRAY_SIZE(impd1->clks); i++)
+		clkdev_add(impd1->clks[i]);
+
 	for (i = 0; i < ARRAY_SIZE(impd1_devs); i++) {
 		struct impd1_device *idev = impd1_devs + i;
 		struct amba_device *d;
@@ -434,8 +440,8 @@ static void impd1_remove(struct lm_device *dev)
 
 	device_for_each_child(&dev->dev, NULL, impd1_remove_one);
 
-	for (i = 0; i < ARRAY_SIZE(impd1->vcos); i++)
-		clk_unregister(&impd1->vcos[i]);
+	for (i = 0; i < ARRAY_SIZE(impd1->clks); i++)
+		clkdev_drop(impd1->clks[i]);
 
 	lm_set_drvdata(dev, NULL);