ARM: OMAP2+: omap_device: expose hwmod assert/deassert to omap devices

[firefly-linux-kernel-4.4.55.git] / arch / arm / plat-omap / omap_device.c

diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index 6056a622a5f9c6d87f03c8bf7cf8b9fd136c9f20..5b69742691074819a07b9f9eac29bab016906369 100644 (file)
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -919,6 +919,61 @@ int omap_device_shutdown(struct platform_device *pdev)
        return ret;
 }
 
+/**
+ * omap_device_assert_hardreset - set a device's hardreset line
+ * @pdev: struct platform_device * to reset
+ * @name: const char * name of the reset line
+ *
+ * Set the hardreset line identified by @name on the IP blocks
+ * associated with the hwmods backing the platform_device @pdev.  All
+ * of the hwmods associated with @pdev must have the same hardreset
+ * line linked to them for this to work.  Passes along the return value
+ * of omap_hwmod_assert_hardreset() in the event of any failure, or
+ * returns 0 upon success.
+ */
+int omap_device_assert_hardreset(struct platform_device *pdev, const char *name)
+{
+       struct omap_device *od = to_omap_device(pdev);
+       int ret = 0;
+       int i;
+
+       for (i = 0; i < od->hwmods_cnt; i++) {
+               ret = omap_hwmod_assert_hardreset(od->hwmods[i], name);
+               if (ret)
+                       break;
+       }
+
+       return ret;
+}
+
+/**
+ * omap_device_deassert_hardreset - release a device's hardreset line
+ * @pdev: struct platform_device * to reset
+ * @name: const char * name of the reset line
+ *
+ * Release the hardreset line identified by @name on the IP blocks
+ * associated with the hwmods backing the platform_device @pdev.  All
+ * of the hwmods associated with @pdev must have the same hardreset
+ * line linked to them for this to work.  Passes along the return
+ * value of omap_hwmod_deassert_hardreset() in the event of any
+ * failure, or returns 0 upon success.
+ */
+int omap_device_deassert_hardreset(struct platform_device *pdev,
+                                  const char *name)
+{
+       struct omap_device *od = to_omap_device(pdev);
+       int ret = 0;
+       int i;
+
+       for (i = 0; i < od->hwmods_cnt; i++) {
+               ret = omap_hwmod_deassert_hardreset(od->hwmods[i], name);
+               if (ret)
+                       break;
+       }
+
+       return ret;
+}
+
 /**
  * omap_device_align_pm_lat - activate/deactivate device to match wakeup lat lim
  * @od: struct omap_device *