bcma: allow enabling PLL

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/bcma/core.c b/drivers/bcma/core.c
index 0686b1b..2d8506d 100644 (file)
--- a/drivers/bcma/core.c
+++ b/drivers/bcma/core.c
@@ -81,3 +81,28 @@ void bcma_core_set_clockmode(struct bcma_device *core,
        }
 }
 EXPORT_SYMBOL_GPL(bcma_core_set_clockmode);
+
+void bcma_core_pll_ctl(struct bcma_device *core, u32 req, u32 status, bool on)
+{
+       u16 i;
+
+       WARN_ON(req & ~BCMA_CLKCTLST_EXTRESREQ);
+       WARN_ON(status & ~BCMA_CLKCTLST_EXTRESST);
+
+       if (on) {
+               bcma_set32(core, BCMA_CLKCTLST, req);
+               for (i = 0; i < 10000; i++) {
+                       if ((bcma_read32(core, BCMA_CLKCTLST) & status) ==
+                           status) {
+                               i = 0;
+                               break;
+                       }
+                       udelay(10);
+               }
+               if (i)
+                       pr_err("PLL enable timeout\n");
+       } else {
+               pr_warn("Disabling PLL not supported yet!\n");
+       }
+}
+EXPORT_SYMBOL_GPL(bcma_core_pll_ctl);

diff --git a/include/linux/bcma/bcma.h b/include/linux/bcma/bcma.h
index 37017c1..cc1582d 100644 (file)
--- a/include/linux/bcma/bcma.h
+++ b/include/linux/bcma/bcma.h
@@ -260,5 +260,7 @@ extern void bcma_core_disable(struct bcma_device *core, u32 flags);
 extern int bcma_core_enable(struct bcma_device *core, u32 flags);
 extern void bcma_core_set_clockmode(struct bcma_device *core,
                                    enum bcma_clkmode clkmode);
+extern void bcma_core_pll_ctl(struct bcma_device *core, u32 req, u32 status,
+                             bool on);
 
 #endif /* LINUX_BCMA_H_ */