MIPS: Alchemy: au1100fb: use clk framework

Use the clock framework to en/disable the clock to the au1100
framebuffer device.

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/7474/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/mips/alchemy/devboards/db1000.c b/arch/mips/alchemy/devboards/db1000.c
index 8201f00d575b..001102e197f1 100644
--- a/arch/mips/alchemy/devboards/db1000.c
+++ b/arch/mips/alchemy/devboards/db1000.c
@@ -19,6 +19,7 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
+#include <linux/clk.h>
 #include <linux/dma-mapping.h>
 #include <linux/gpio.h>
 #include <linux/init.h>
@@ -496,6 +497,7 @@ int __init db1000_dev_setup(void)
         int board = BCSR_WHOAMI_BOARD(bcsr_read(BCSR_WHOAMI));
         int c0, c1, d0, d1, s0, s1, flashsize = 32,  twosocks = 1;
         unsigned long pfc;
+        struct clk *c, *p;
 
         if (board == BCSR_WHOAMI_DB1500) {
                 c0 = AU1500_GPIO2_INT;
@@ -525,6 +527,18 @@ int __init db1000_dev_setup(void)
                 spi_register_board_info(db1100_spi_info,
                                         ARRAY_SIZE(db1100_spi_info));
 
+                /* link LCD clock to AUXPLL */
+                p = clk_get(NULL, "auxpll_clk");
+                c = clk_get(NULL, "lcd_intclk");
+                if (!IS_ERR(c) && !IS_ERR(p)) {
+                        clk_set_parent(c, p);
+                        clk_set_rate(c, clk_get_rate(p));
+                }
+                if (!IS_ERR(c))
+                        clk_put(c);
+                if (!IS_ERR(p))
+                        clk_put(p);
+
                 platform_add_devices(db1100_devs, ARRAY_SIZE(db1100_devs));
                 platform_device_register(&db1100_spi_dev);
         } else if (board == BCSR_WHOAMI_DB1000) {