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Diffstat (limited to 'arch/arm/plat-omap/omap_device.c')
-rw-r--r--arch/arm/plat-omap/omap_device.c102
1 files changed, 84 insertions, 18 deletions
diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index 2ed72013c2e..59043589484 100644
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -90,6 +90,8 @@
#define IGNORE_WAKEUP_LAT 1
+#define OMAP_DEVICE_MAGIC 0xf00dcafe
+
/* Private functions */
/**
@@ -138,10 +140,22 @@ static int _omap_device_activate(struct omap_device *od, u8 ignore_lat)
"%llu nsec\n", od->pdev.name, od->pm_lat_level,
act_lat);
- WARN(act_lat > odpl->activate_lat, "omap_device: %s.%d: "
- "activate step %d took longer than expected (%llu > %d)\n",
- od->pdev.name, od->pdev.id, od->pm_lat_level,
- act_lat, odpl->activate_lat);
+ if (act_lat > odpl->activate_lat) {
+ odpl->activate_lat_worst = act_lat;
+ if (odpl->flags & OMAP_DEVICE_LATENCY_AUTO_ADJUST) {
+ odpl->activate_lat = act_lat;
+ pr_warning("omap_device: %s.%d: new worst case "
+ "activate latency %d: %llu\n",
+ od->pdev.name, od->pdev.id,
+ od->pm_lat_level, act_lat);
+ } else
+ pr_warning("omap_device: %s.%d: activate "
+ "latency %d higher than exptected. "
+ "(%llu > %d)\n",
+ od->pdev.name, od->pdev.id,
+ od->pm_lat_level, act_lat,
+ odpl->activate_lat);
+ }
od->dev_wakeup_lat -= odpl->activate_lat;
}
@@ -194,10 +208,23 @@ static int _omap_device_deactivate(struct omap_device *od, u8 ignore_lat)
"%llu nsec\n", od->pdev.name, od->pm_lat_level,
deact_lat);
- WARN(deact_lat > odpl->deactivate_lat, "omap_device: %s.%d: "
- "deactivate step %d took longer than expected "
- "(%llu > %d)\n", od->pdev.name, od->pdev.id,
- od->pm_lat_level, deact_lat, odpl->deactivate_lat);
+ if (deact_lat > odpl->deactivate_lat) {
+ odpl->deactivate_lat_worst = deact_lat;
+ if (odpl->flags & OMAP_DEVICE_LATENCY_AUTO_ADJUST) {
+ odpl->deactivate_lat = deact_lat;
+ pr_warning("omap_device: %s.%d: new worst case "
+ "deactivate latency %d: %llu\n",
+ od->pdev.name, od->pdev.id,
+ od->pm_lat_level, deact_lat);
+ } else
+ pr_warning("omap_device: %s.%d: deactivate "
+ "latency %d higher than exptected. "
+ "(%llu > %d)\n",
+ od->pdev.name, od->pdev.id,
+ od->pm_lat_level, deact_lat,
+ odpl->deactivate_lat);
+ }
+
od->dev_wakeup_lat += odpl->activate_lat;
@@ -280,6 +307,7 @@ int omap_device_fill_resources(struct omap_device *od, struct resource *res)
* @pdata_len: amount of memory pointed to by @pdata
* @pm_lats: pointer to a omap_device_pm_latency array for this device
* @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
+ * @is_early_device: should the device be registered as an early device or not
*
* Convenience function for building and registering a single
* omap_device record, which in turn builds and registers a
@@ -291,7 +319,7 @@ struct omap_device *omap_device_build(const char *pdev_name, int pdev_id,
struct omap_hwmod *oh, void *pdata,
int pdata_len,
struct omap_device_pm_latency *pm_lats,
- int pm_lats_cnt)
+ int pm_lats_cnt, int is_early_device)
{
struct omap_hwmod *ohs[] = { oh };
@@ -299,7 +327,8 @@ struct omap_device *omap_device_build(const char *pdev_name, int pdev_id,
return ERR_PTR(-EINVAL);
return omap_device_build_ss(pdev_name, pdev_id, ohs, 1, pdata,
- pdata_len, pm_lats, pm_lats_cnt);
+ pdata_len, pm_lats, pm_lats_cnt,
+ is_early_device);
}
/**
@@ -311,6 +340,7 @@ struct omap_device *omap_device_build(const char *pdev_name, int pdev_id,
* @pdata_len: amount of memory pointed to by @pdata
* @pm_lats: pointer to a omap_device_pm_latency array for this device
* @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
+ * @is_early_device: should the device be registered as an early device or not
*
* Convenience function for building and registering an omap_device
* subsystem record. Subsystem records consist of multiple
@@ -322,7 +352,7 @@ struct omap_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
struct omap_hwmod **ohs, int oh_cnt,
void *pdata, int pdata_len,
struct omap_device_pm_latency *pm_lats,
- int pm_lats_cnt)
+ int pm_lats_cnt, int is_early_device)
{
int ret = -ENOMEM;
struct omap_device *od;
@@ -378,7 +408,13 @@ struct omap_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
od->pm_lats = pm_lats;
od->pm_lats_cnt = pm_lats_cnt;
- ret = omap_device_register(od);
+ od->magic = OMAP_DEVICE_MAGIC;
+
+ if (is_early_device)
+ ret = omap_early_device_register(od);
+ else
+ ret = omap_device_register(od);
+
if (ret)
goto odbs_exit4;
@@ -399,6 +435,24 @@ odbs_exit1:
}
/**
+ * omap_early_device_register - register an omap_device as an early platform
+ * device.
+ * @od: struct omap_device * to register
+ *
+ * Register the omap_device structure. This currently just calls
+ * platform_early_add_device() on the underlying platform_device.
+ * Returns 0 by default.
+ */
+int omap_early_device_register(struct omap_device *od)
+{
+ struct platform_device *devices[1];
+
+ devices[0] = &(od->pdev);
+ early_platform_add_devices(devices, 1);
+ return 0;
+}
+
+/**
* omap_device_register - register an omap_device with one omap_hwmod
* @od: struct omap_device * to register
*
@@ -437,8 +491,8 @@ int omap_device_enable(struct platform_device *pdev)
od = _find_by_pdev(pdev);
if (od->_state == OMAP_DEVICE_STATE_ENABLED) {
- WARN(1, "omap_device: %s.%d: omap_device_enable() called from "
- "invalid state\n", od->pdev.name, od->pdev.id);
+ WARN(1, "omap_device: %s.%d: %s() called from invalid state %d\n",
+ od->pdev.name, od->pdev.id, __func__, od->_state);
return -EINVAL;
}
@@ -476,8 +530,8 @@ int omap_device_idle(struct platform_device *pdev)
od = _find_by_pdev(pdev);
if (od->_state != OMAP_DEVICE_STATE_ENABLED) {
- WARN(1, "omap_device: %s.%d: omap_device_idle() called from "
- "invalid state\n", od->pdev.name, od->pdev.id);
+ WARN(1, "omap_device: %s.%d: %s() called from invalid state %d\n",
+ od->pdev.name, od->pdev.id, __func__, od->_state);
return -EINVAL;
}
@@ -509,8 +563,8 @@ int omap_device_shutdown(struct platform_device *pdev)
if (od->_state != OMAP_DEVICE_STATE_ENABLED &&
od->_state != OMAP_DEVICE_STATE_IDLE) {
- WARN(1, "omap_device: %s.%d: omap_device_shutdown() called "
- "from invalid state\n", od->pdev.name, od->pdev.id);
+ WARN(1, "omap_device: %s.%d: %s() called from invalid state %d\n",
+ od->pdev.name, od->pdev.id, __func__, od->_state);
return -EINVAL;
}
@@ -564,6 +618,18 @@ int omap_device_align_pm_lat(struct platform_device *pdev,
}
/**
+ * omap_device_is_valid - Check if pointer is a valid omap_device
+ * @od: struct omap_device *
+ *
+ * Return whether struct omap_device pointer @od points to a valid
+ * omap_device.
+ */
+bool omap_device_is_valid(struct omap_device *od)
+{
+ return (od && od->magic == OMAP_DEVICE_MAGIC);
+}
+
+/**
* omap_device_get_pwrdm - return the powerdomain * associated with @od
* @od: struct omap_device *
*
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 09:26:43 +0000