MIPS: AR7: Implement clock API

This patch makes the ar7 clock code implement the Linux clk API. Drivers
using the various clocks available in the SoC are updated accordingly.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Wim Van Sebroeck <wim@iguana.be>
To: linux-mips@linux-mips.org
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: netdev@vger.kernel.org
Cc: David Miller <davem@davemloft.net>
Patchwork: http://patchwork.linux-mips.org/patch/881/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/net/cpmac.c b/drivers/net/cpmac.c
index 8d0be26f94e3..bf2072e54200 100644
--- a/drivers/net/cpmac.c
+++ b/drivers/net/cpmac.c
@@ -36,6 +36,7 @@
 #include <linux/phy_fixed.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
+#include <linux/clk.h>
 #include <asm/gpio.h>
 #include <asm/atomic.h>
 
@@ -294,9 +295,16 @@ static int cpmac_mdio_write(struct mii_bus *bus, int phy_id,
 
 static int cpmac_mdio_reset(struct mii_bus *bus)
 {
+        struct clk *cpmac_clk;
+
+        cpmac_clk = clk_get(&bus->dev, "cpmac");
+        if (IS_ERR(cpmac_clk)) {
+                printk(KERN_ERR "unable to get cpmac clock\n");
+                return -1;
+        }
         ar7_device_reset(AR7_RESET_BIT_MDIO);
         cpmac_write(bus->priv, CPMAC_MDIO_CONTROL, MDIOC_ENABLE |
-                    MDIOC_CLKDIV(ar7_cpmac_freq() / 2200000 - 1));
+                    MDIOC_CLKDIV(clk_get_rate(cpmac_clk) / 2200000 - 1));
         return 0;
 }