[ARM] ep93xx: convert to clkdev and match clocks by struct device where possible

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

3 files changed, 31 insertions, 45 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6fe71af3c3e6..995a1bfe3ae4 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -276,6 +276,7 @@ config ARCH_EP93XX
         select ARM_VIC
         select GENERIC_GPIO
         select HAVE_CLK
+        select COMMON_CLKDEV
         select ARCH_REQUIRE_GPIOLIB
         help
           This enables support for the Cirrus EP93xx series of CPUs.
diff --git a/arch/arm/mach-ep93xx/clock.c b/arch/arm/mach-ep93xx/clock.c
index 8c9f2491dccc..96049283a10a 100644
--- a/arch/arm/mach-ep93xx/clock.c
+++ b/arch/arm/mach-ep93xx/clock.c
@@ -16,11 +16,12 @@
 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/io.h>
+
+#include <asm/clkdev.h>
 #include <asm/div64.h>
 #include <mach/hardware.h>
 
 struct clk {
-        char            *name;
         unsigned long   rate;
         int             users;
         u32             enable_reg;
@@ -28,53 +29,33 @@ struct clk {
 };
 
 static struct clk clk_uart = {
-        .name           = "UARTCLK",
         .rate           = 14745600,
 };
-static struct clk clk_pll1 = {
-        .name           = "pll1",
-};
-static struct clk clk_f = {
-        .name           = "fclk",
-};
-static struct clk clk_h = {
-        .name           = "hclk",
-};
-static struct clk clk_p = {
-        .name           = "pclk",
-};
-static struct clk clk_pll2 = {
-        .name           = "pll2",
-};
+static struct clk clk_pll1;
+static struct clk clk_f;
+static struct clk clk_h;
+static struct clk clk_p;
+static struct clk clk_pll2;
 static struct clk clk_usb_host = {
-        .name           = "usb_host",
         .enable_reg     = EP93XX_SYSCON_CLOCK_CONTROL,
         .enable_mask    = EP93XX_SYSCON_CLOCK_USH_EN,
 };
 
-
-static struct clk *clocks[] = {
-        &clk_uart,
-        &clk_pll1,
-        &clk_f,
-        &clk_h,
-        &clk_p,
-        &clk_pll2,
-        &clk_usb_host,
+#define INIT_CK(dev,con,ck)                                     \
+        { .dev_id = dev, .con_id = con, .clk = ck }
+
+static struct clk_lookup clocks[] = {
+        INIT_CK("apb:uart1", NULL, &clk_uart),
+        INIT_CK("apb:uart2", NULL, &clk_uart),
+        INIT_CK("apb:uart3", NULL, &clk_uart),
+        INIT_CK(NULL, "pll1", &clk_pll1),
+        INIT_CK(NULL, "fclk", &clk_f),
+        INIT_CK(NULL, "hclk", &clk_h),
+        INIT_CK(NULL, "pclk", &clk_p),
+        INIT_CK(NULL, "pll2", &clk_pll2),
+        INIT_CK(NULL, "usb_host", &clk_usb_host),
 };
 
-struct clk *clk_get(struct device *dev, const char *id)
-{
-        int i;
-
-        for (i = 0; i < ARRAY_SIZE(clocks); i++) {
-                if (!strcmp(clocks[i]->name, id))
-                        return clocks[i];
-        }
-
-        return ERR_PTR(-ENOENT);
-}
-EXPORT_SYMBOL(clk_get);
 
 int clk_enable(struct clk *clk)
 {
@@ -106,12 +87,6 @@ unsigned long clk_get_rate(struct clk *clk)
 }
 EXPORT_SYMBOL(clk_get_rate);
 
-void clk_put(struct clk *clk)
-{
-}
-EXPORT_SYMBOL(clk_put);
-
-
 
 static char fclk_divisors[] = { 1, 2, 4, 8, 16, 1, 1, 1 };
 static char hclk_divisors[] = { 1, 2, 4, 5, 6, 8, 16, 32 };
@@ -138,6 +113,7 @@ static unsigned long calc_pll_rate(u32 config_word)
 static int __init ep93xx_clock_init(void)
 {
         u32 value;
+        int i;
 
         value = __raw_readl(EP93XX_SYSCON_CLOCK_SET1);
         if (!(value & 0x00800000)) {                    /* PLL1 bypassed?  */
@@ -165,6 +141,8 @@ static int __init ep93xx_clock_init(void)
                 clk_f.rate / 1000000, clk_h.rate / 1000000,
                 clk_p.rate / 1000000);
 
+        for (i = 0; i < ARRAY_SIZE(clocks); i++)
+                clkdev_add(&clocks[i]);
         return 0;
 }
 arch_initcall(ep93xx_clock_init);
diff --git a/arch/arm/mach-ep93xx/include/mach/clkdev.h b/arch/arm/mach-ep93xx/include/mach/clkdev.h
new file mode 100644
index 000000000000..04b37a89801c
--- /dev/null
+++ b/arch/arm/mach-ep93xx/include/mach/clkdev.h
@@ -0,0 +1,7 @@
+#ifndef __ASM_MACH_CLKDEV_H
+#define __ASM_MACH_CLKDEV_H
+
+#define __clk_get(clk) ({ 1; })
+#define __clk_put(clk) do { } while (0)
+
+#endif