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@@ -17,68 +17,15 @@
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* to control power management and interconnect properties of their
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* devices.
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*
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- * In the medium- to long-term, this code should either be
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- * a) implemented via arch-specific pointers in platform_data
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- * or
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- * b) implemented as a proper omap_bus/omap_device in Linux, no more
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- * platform_data func pointers
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+ * In the medium- to long-term, this code should be implemented as a
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+ * proper omap_bus/omap_device in Linux, no more platform_data func
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+ * pointers
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*
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*
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- * Guidelines for usage by driver authors:
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- *
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- * 1. These functions are intended to be used by device drivers via
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- * function pointers in struct platform_data. As an example,
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- * omap_device_enable() should be passed to the driver as
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- *
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- * struct foo_driver_platform_data {
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- * ...
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- * int (*device_enable)(struct platform_device *pdev);
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- * ...
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- * }
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- *
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- * Note that the generic "device_enable" name is used, rather than
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- * "omap_device_enable". This is so other architectures can pass in their
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- * own enable/disable functions here.
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- *
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- * This should be populated during device setup:
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- *
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- * ...
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- * pdata->device_enable = omap_device_enable;
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- * ...
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- *
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- * 2. Drivers should first check to ensure the function pointer is not null
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- * before calling it, as in:
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- *
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- * if (pdata->device_enable)
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- * pdata->device_enable(pdev);
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- *
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- * This allows other architectures that don't use similar device_enable()/
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- * device_shutdown() functions to execute normally.
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- *
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- * ...
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- *
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- * Suggested usage by device drivers:
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- *
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- * During device initialization:
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- * device_enable()
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- *
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- * During device idle:
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- * (save remaining device context if necessary)
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- * device_idle();
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- *
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- * During device resume:
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- * device_enable();
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- * (restore context if necessary)
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- *
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- * During device shutdown:
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- * device_shutdown()
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- * (device must be reinitialized at this point to use it again)
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- *
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*/
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#undef DEBUG
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#include <linux/kernel.h>
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-#include <linux/export.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/err.h>
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@@ -92,155 +39,8 @@
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#include "omap_device.h"
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#include "omap_hwmod.h"
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-/* These parameters are passed to _omap_device_{de,}activate() */
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-#define USE_WAKEUP_LAT 0
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-#define IGNORE_WAKEUP_LAT 1
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-
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-static int omap_early_device_register(struct platform_device *pdev);
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-
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-static struct omap_device_pm_latency omap_default_latency[] = {
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- {
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- .deactivate_func = omap_device_idle_hwmods,
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- .activate_func = omap_device_enable_hwmods,
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- .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
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- }
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-};
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-
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/* Private functions */
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-/**
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- * _omap_device_activate - increase device readiness
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- * @od: struct omap_device *
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- * @ignore_lat: increase to latency target (0) or full readiness (1)?
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- *
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- * Increase readiness of omap_device @od (thus decreasing device
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- * wakeup latency, but consuming more power). If @ignore_lat is
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- * IGNORE_WAKEUP_LAT, make the omap_device fully active. Otherwise,
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- * if @ignore_lat is USE_WAKEUP_LAT, and the device's maximum wakeup
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- * latency is greater than the requested maximum wakeup latency, step
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- * backwards in the omap_device_pm_latency table to ensure the
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- * device's maximum wakeup latency is less than or equal to the
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- * requested maximum wakeup latency. Returns 0.
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- */
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-static int _omap_device_activate(struct omap_device *od, u8 ignore_lat)
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-{
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- struct timespec a, b, c;
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-
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- dev_dbg(&od->pdev->dev, "omap_device: activating\n");
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-
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- while (od->pm_lat_level > 0) {
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- struct omap_device_pm_latency *odpl;
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- unsigned long long act_lat = 0;
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-
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- od->pm_lat_level--;
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-
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- odpl = od->pm_lats + od->pm_lat_level;
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-
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- if (!ignore_lat &&
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- (od->dev_wakeup_lat <= od->_dev_wakeup_lat_limit))
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- break;
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-
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- read_persistent_clock(&a);
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-
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- /* XXX check return code */
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- odpl->activate_func(od);
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-
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- read_persistent_clock(&b);
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-
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- c = timespec_sub(b, a);
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- act_lat = timespec_to_ns(&c);
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-
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- dev_dbg(&od->pdev->dev,
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- "omap_device: pm_lat %d: activate: elapsed time %llu nsec\n",
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- od->pm_lat_level, act_lat);
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-
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- if (act_lat > odpl->activate_lat) {
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- odpl->activate_lat_worst = act_lat;
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- if (odpl->flags & OMAP_DEVICE_LATENCY_AUTO_ADJUST) {
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- odpl->activate_lat = act_lat;
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- dev_dbg(&od->pdev->dev,
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- "new worst case activate latency %d: %llu\n",
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- od->pm_lat_level, act_lat);
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- } else
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- dev_warn(&od->pdev->dev,
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- "activate latency %d higher than expected. (%llu > %d)\n",
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- od->pm_lat_level, act_lat,
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- odpl->activate_lat);
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- }
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-
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- od->dev_wakeup_lat -= odpl->activate_lat;
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- }
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-
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- return 0;
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-}
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-
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-/**
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- * _omap_device_deactivate - decrease device readiness
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- * @od: struct omap_device *
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- * @ignore_lat: decrease to latency target (0) or full inactivity (1)?
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- *
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- * Decrease readiness of omap_device @od (thus increasing device
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- * wakeup latency, but conserving power). If @ignore_lat is
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- * IGNORE_WAKEUP_LAT, make the omap_device fully inactive. Otherwise,
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- * if @ignore_lat is USE_WAKEUP_LAT, and the device's maximum wakeup
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- * latency is less than the requested maximum wakeup latency, step
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- * forwards in the omap_device_pm_latency table to ensure the device's
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- * maximum wakeup latency is less than or equal to the requested
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- * maximum wakeup latency. Returns 0.
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- */
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-static int _omap_device_deactivate(struct omap_device *od, u8 ignore_lat)
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-{
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- struct timespec a, b, c;
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-
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- dev_dbg(&od->pdev->dev, "omap_device: deactivating\n");
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-
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- while (od->pm_lat_level < od->pm_lats_cnt) {
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- struct omap_device_pm_latency *odpl;
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- unsigned long long deact_lat = 0;
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-
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- odpl = od->pm_lats + od->pm_lat_level;
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-
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- if (!ignore_lat &&
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- ((od->dev_wakeup_lat + odpl->activate_lat) >
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- od->_dev_wakeup_lat_limit))
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- break;
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-
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- read_persistent_clock(&a);
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-
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- /* XXX check return code */
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- odpl->deactivate_func(od);
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-
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- read_persistent_clock(&b);
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-
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- c = timespec_sub(b, a);
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- deact_lat = timespec_to_ns(&c);
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-
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- dev_dbg(&od->pdev->dev,
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- "omap_device: pm_lat %d: deactivate: elapsed time %llu nsec\n",
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- od->pm_lat_level, deact_lat);
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-
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- if (deact_lat > odpl->deactivate_lat) {
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- odpl->deactivate_lat_worst = deact_lat;
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- if (odpl->flags & OMAP_DEVICE_LATENCY_AUTO_ADJUST) {
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- odpl->deactivate_lat = deact_lat;
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- dev_dbg(&od->pdev->dev,
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- "new worst case deactivate latency %d: %llu\n",
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- od->pm_lat_level, deact_lat);
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- } else
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- dev_warn(&od->pdev->dev,
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- "deactivate latency %d higher than expected. (%llu > %d)\n",
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- od->pm_lat_level, deact_lat,
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- odpl->deactivate_lat);
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- }
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-
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- od->dev_wakeup_lat += odpl->activate_lat;
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-
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- od->pm_lat_level++;
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- }
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-
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- return 0;
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-}
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-
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static void _add_clkdev(struct omap_device *od, const char *clk_alias,
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const char *clk_name)
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{
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@@ -315,9 +115,6 @@ static void _add_hwmod_clocks_clkdev(struct omap_device *od,
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* @oh: ptr to the single omap_hwmod that backs this omap_device
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* @pdata: platform_data ptr to associate with the platform_device
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* @pdata_len: amount of memory pointed to by @pdata
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- * @pm_lats: pointer to a omap_device_pm_latency array for this device
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- * @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
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- * @is_early_device: should the device be registered as an early device or not
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*
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* Function for building an omap_device already registered from device-tree
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*
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@@ -356,7 +153,7 @@ static int omap_device_build_from_dt(struct platform_device *pdev)
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hwmods[i] = oh;
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}
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- od = omap_device_alloc(pdev, hwmods, oh_cnt, NULL, 0);
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+ od = omap_device_alloc(pdev, hwmods, oh_cnt);
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if (!od) {
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dev_err(&pdev->dev, "Cannot allocate omap_device for :%s\n",
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oh_name);
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@@ -407,6 +204,39 @@ static int _omap_device_notifier_call(struct notifier_block *nb,
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return NOTIFY_DONE;
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}
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+/**
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+ * _omap_device_enable_hwmods - call omap_hwmod_enable() on all hwmods
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+ * @od: struct omap_device *od
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+ *
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+ * Enable all underlying hwmods. Returns 0.
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+ */
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+static int _omap_device_enable_hwmods(struct omap_device *od)
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+{
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+ int i;
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+
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+ for (i = 0; i < od->hwmods_cnt; i++)
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+ omap_hwmod_enable(od->hwmods[i]);
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+
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+ /* XXX pass along return value here? */
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+ return 0;
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+}
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+
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+/**
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+ * _omap_device_idle_hwmods - call omap_hwmod_idle() on all hwmods
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+ * @od: struct omap_device *od
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+ *
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+ * Idle all underlying hwmods. Returns 0.
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+ */
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+static int _omap_device_idle_hwmods(struct omap_device *od)
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+{
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+ int i;
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+
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+ for (i = 0; i < od->hwmods_cnt; i++)
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+ omap_hwmod_idle(od->hwmods[i]);
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+
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+ /* XXX pass along return value here? */
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+ return 0;
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+}
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/* Public functions for use by core code */
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@@ -526,18 +356,14 @@ static int _od_fill_dma_resources(struct omap_device *od,
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* @oh: ptr to the single omap_hwmod that backs this omap_device
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* @pdata: platform_data ptr to associate with the platform_device
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* @pdata_len: amount of memory pointed to by @pdata
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- * @pm_lats: pointer to a omap_device_pm_latency array for this device
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- * @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
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*
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* Convenience function for allocating an omap_device structure and filling
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- * hwmods, resources and pm_latency attributes.
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+ * hwmods, and resources.
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*
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* Returns an struct omap_device pointer or ERR_PTR() on error;
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*/
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struct omap_device *omap_device_alloc(struct platform_device *pdev,
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- struct omap_hwmod **ohs, int oh_cnt,
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- struct omap_device_pm_latency *pm_lats,
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- int pm_lats_cnt)
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+ struct omap_hwmod **ohs, int oh_cnt)
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{
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int ret = -ENOMEM;
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struct omap_device *od;
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@@ -626,18 +452,6 @@ struct omap_device *omap_device_alloc(struct platform_device *pdev,
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goto oda_exit3;
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have_everything:
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- if (!pm_lats) {
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- pm_lats = omap_default_latency;
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- pm_lats_cnt = ARRAY_SIZE(omap_default_latency);
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- }
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-
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- od->pm_lats_cnt = pm_lats_cnt;
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- od->pm_lats = kmemdup(pm_lats,
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- sizeof(struct omap_device_pm_latency) * pm_lats_cnt,
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- GFP_KERNEL);
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- if (!od->pm_lats)
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- goto oda_exit3;
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-
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pdev->archdata.od = od;
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for (i = 0; i < oh_cnt; i++) {
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@@ -663,7 +477,6 @@ void omap_device_delete(struct omap_device *od)
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return;
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od->pdev->archdata.od = NULL;
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- kfree(od->pm_lats);
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kfree(od->hwmods);
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kfree(od);
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}
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@@ -675,9 +488,6 @@ void omap_device_delete(struct omap_device *od)
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* @oh: ptr to the single omap_hwmod that backs this omap_device
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* @pdata: platform_data ptr to associate with the platform_device
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* @pdata_len: amount of memory pointed to by @pdata
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- * @pm_lats: pointer to a omap_device_pm_latency array for this device
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- * @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
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- * @is_early_device: should the device be registered as an early device or not
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*
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* Convenience function for building and registering a single
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* omap_device record, which in turn builds and registers a
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@@ -685,11 +495,10 @@ void omap_device_delete(struct omap_device *od)
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* information. Returns ERR_PTR(-EINVAL) if @oh is NULL; otherwise,
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* passes along the return value of omap_device_build_ss().
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*/
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-struct platform_device __init *omap_device_build(const char *pdev_name, int pdev_id,
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- struct omap_hwmod *oh, void *pdata,
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- int pdata_len,
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- struct omap_device_pm_latency *pm_lats,
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- int pm_lats_cnt, int is_early_device)
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+struct platform_device __init *omap_device_build(const char *pdev_name,
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+ int pdev_id,
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+ struct omap_hwmod *oh,
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+ void *pdata, int pdata_len)
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{
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struct omap_hwmod *ohs[] = { oh };
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@@ -697,8 +506,7 @@ struct platform_device __init *omap_device_build(const char *pdev_name, int pdev
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return ERR_PTR(-EINVAL);
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return omap_device_build_ss(pdev_name, pdev_id, ohs, 1, pdata,
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- pdata_len, pm_lats, pm_lats_cnt,
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- is_early_device);
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+ pdata_len);
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}
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/**
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@@ -708,9 +516,6 @@ struct platform_device __init *omap_device_build(const char *pdev_name, int pdev
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* @oh: ptr to the single omap_hwmod that backs this omap_device
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* @pdata: platform_data ptr to associate with the platform_device
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* @pdata_len: amount of memory pointed to by @pdata
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- * @pm_lats: pointer to a omap_device_pm_latency array for this device
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- * @pm_lats_cnt: ARRAY_SIZE() of @pm_lats
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- * @is_early_device: should the device be registered as an early device or not
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*
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* Convenience function for building and registering an omap_device
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* subsystem record. Subsystem records consist of multiple
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@@ -718,11 +523,11 @@ struct platform_device __init *omap_device_build(const char *pdev_name, int pdev
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* platform_device record. Returns an ERR_PTR() on error, or passes
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* along the return value of omap_device_register().
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*/
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-struct platform_device __init *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 is_early_device)
|
|
|
+struct platform_device __init *omap_device_build_ss(const char *pdev_name,
|
|
|
+ int pdev_id,
|
|
|
+ struct omap_hwmod **ohs,
|
|
|
+ int oh_cnt, void *pdata,
|
|
|
+ int pdata_len)
|
|
|
{
|
|
|
int ret = -ENOMEM;
|
|
|
struct platform_device *pdev;
|
|
@@ -746,7 +551,7 @@ struct platform_device __init *omap_device_build_ss(const char *pdev_name, int p
|
|
|
else
|
|
|
dev_set_name(&pdev->dev, "%s", pdev->name);
|
|
|
|
|
|
- od = omap_device_alloc(pdev, ohs, oh_cnt, pm_lats, pm_lats_cnt);
|
|
|
+ od = omap_device_alloc(pdev, ohs, oh_cnt);
|
|
|
if (IS_ERR(od))
|
|
|
goto odbs_exit1;
|
|
|
|
|
@@ -754,10 +559,7 @@ struct platform_device __init *omap_device_build_ss(const char *pdev_name, int p
|
|
|
if (ret)
|
|
|
goto odbs_exit2;
|
|
|
|
|
|
- if (is_early_device)
|
|
|
- ret = omap_early_device_register(pdev);
|
|
|
- else
|
|
|
- ret = omap_device_register(pdev);
|
|
|
+ ret = omap_device_register(pdev);
|
|
|
if (ret)
|
|
|
goto odbs_exit2;
|
|
|
|
|
@@ -774,24 +576,6 @@ odbs_exit:
|
|
|
return ERR_PTR(ret);
|
|
|
}
|
|
|
|
|
|
-/**
|
|
|
- * 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.
|
|
|
- */
|
|
|
-static int __init omap_early_device_register(struct platform_device *pdev)
|
|
|
-{
|
|
|
- struct platform_device *devices[1];
|
|
|
-
|
|
|
- devices[0] = pdev;
|
|
|
- early_platform_add_devices(devices, 1);
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
#ifdef CONFIG_PM_RUNTIME
|
|
|
static int _od_runtime_suspend(struct device *dev)
|
|
|
{
|
|
@@ -902,10 +686,9 @@ int omap_device_register(struct platform_device *pdev)
|
|
|
* to be accessible and ready to operate. This generally involves
|
|
|
* enabling clocks, setting SYSCONFIG registers; and in the future may
|
|
|
* involve remuxing pins. Device drivers should call this function
|
|
|
- * (through platform_data function pointers) where they would normally
|
|
|
- * enable clocks, etc. Returns -EINVAL if called when the omap_device
|
|
|
- * is already enabled, or passes along the return value of
|
|
|
- * _omap_device_activate().
|
|
|
+ * indirectly via pm_runtime_get*(). Returns -EINVAL if called when
|
|
|
+ * the omap_device is already enabled, or passes along the return
|
|
|
+ * value of _omap_device_enable_hwmods().
|
|
|
*/
|
|
|
int omap_device_enable(struct platform_device *pdev)
|
|
|
{
|
|
@@ -921,14 +704,8 @@ int omap_device_enable(struct platform_device *pdev)
|
|
|
return -EINVAL;
|
|
|
}
|
|
|
|
|
|
- /* Enable everything if we're enabling this device from scratch */
|
|
|
- if (od->_state == OMAP_DEVICE_STATE_UNKNOWN)
|
|
|
- od->pm_lat_level = od->pm_lats_cnt;
|
|
|
-
|
|
|
- ret = _omap_device_activate(od, IGNORE_WAKEUP_LAT);
|
|
|
+ ret = _omap_device_enable_hwmods(od);
|
|
|
|
|
|
- od->dev_wakeup_lat = 0;
|
|
|
- od->_dev_wakeup_lat_limit = UINT_MAX;
|
|
|
od->_state = OMAP_DEVICE_STATE_ENABLED;
|
|
|
|
|
|
return ret;
|
|
@@ -938,14 +715,10 @@ int omap_device_enable(struct platform_device *pdev)
|
|
|
* omap_device_idle - idle an omap_device
|
|
|
* @od: struct omap_device * to idle
|
|
|
*
|
|
|
- * Idle omap_device @od by calling as many .deactivate_func() entries
|
|
|
- * in the omap_device's pm_lats table as is possible without exceeding
|
|
|
- * the device's maximum wakeup latency limit, pm_lat_limit. Device
|
|
|
- * drivers should call this function (through platform_data function
|
|
|
- * pointers) where they would normally disable clocks after operations
|
|
|
- * complete, etc.. Returns -EINVAL if the omap_device is not
|
|
|
+ * Idle omap_device @od. Device drivers call this function indirectly
|
|
|
+ * via pm_runtime_put*(). Returns -EINVAL if the omap_device is not
|
|
|
* currently enabled, or passes along the return value of
|
|
|
- * _omap_device_deactivate().
|
|
|
+ * _omap_device_idle_hwmods().
|
|
|
*/
|
|
|
int omap_device_idle(struct platform_device *pdev)
|
|
|
{
|
|
@@ -961,49 +734,13 @@ int omap_device_idle(struct platform_device *pdev)
|
|
|
return -EINVAL;
|
|
|
}
|
|
|
|
|
|
- ret = _omap_device_deactivate(od, USE_WAKEUP_LAT);
|
|
|
+ ret = _omap_device_idle_hwmods(od);
|
|
|
|
|
|
od->_state = OMAP_DEVICE_STATE_IDLE;
|
|
|
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
-/**
|
|
|
- * omap_device_shutdown - shut down an omap_device
|
|
|
- * @od: struct omap_device * to shut down
|
|
|
- *
|
|
|
- * Shut down omap_device @od by calling all .deactivate_func() entries
|
|
|
- * in the omap_device's pm_lats table and then shutting down all of
|
|
|
- * the underlying omap_hwmods. Used when a device is being "removed"
|
|
|
- * or a device driver is being unloaded. Returns -EINVAL if the
|
|
|
- * omap_device is not currently enabled or idle, or passes along the
|
|
|
- * return value of _omap_device_deactivate().
|
|
|
- */
|
|
|
-int omap_device_shutdown(struct platform_device *pdev)
|
|
|
-{
|
|
|
- int ret, i;
|
|
|
- struct omap_device *od;
|
|
|
-
|
|
|
- od = to_omap_device(pdev);
|
|
|
-
|
|
|
- if (od->_state != OMAP_DEVICE_STATE_ENABLED &&
|
|
|
- od->_state != OMAP_DEVICE_STATE_IDLE) {
|
|
|
- dev_warn(&pdev->dev,
|
|
|
- "omap_device: %s() called from invalid state %d\n",
|
|
|
- __func__, od->_state);
|
|
|
- return -EINVAL;
|
|
|
- }
|
|
|
-
|
|
|
- ret = _omap_device_deactivate(od, IGNORE_WAKEUP_LAT);
|
|
|
-
|
|
|
- for (i = 0; i < od->hwmods_cnt; i++)
|
|
|
- omap_hwmod_shutdown(od->hwmods[i]);
|
|
|
-
|
|
|
- od->_state = OMAP_DEVICE_STATE_SHUTDOWN;
|
|
|
-
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
/**
|
|
|
* omap_device_assert_hardreset - set a device's hardreset line
|
|
|
* @pdev: struct platform_device * to reset
|
|
@@ -1059,86 +796,6 @@ int omap_device_deassert_hardreset(struct platform_device *pdev,
|
|
|
return ret;
|
|
|
}
|
|
|
|
|
|
-/**
|
|
|
- * omap_device_align_pm_lat - activate/deactivate device to match wakeup lat lim
|
|
|
- * @od: struct omap_device *
|
|
|
- *
|
|
|
- * When a device's maximum wakeup latency limit changes, call some of
|
|
|
- * the .activate_func or .deactivate_func function pointers in the
|
|
|
- * omap_device's pm_lats array to ensure that the device's maximum
|
|
|
- * wakeup latency is less than or equal to the new latency limit.
|
|
|
- * Intended to be called by OMAP PM code whenever a device's maximum
|
|
|
- * wakeup latency limit changes (e.g., via
|
|
|
- * omap_pm_set_dev_wakeup_lat()). Returns 0 if nothing needs to be
|
|
|
- * done (e.g., if the omap_device is not currently idle, or if the
|
|
|
- * wakeup latency is already current with the new limit) or passes
|
|
|
- * along the return value of _omap_device_deactivate() or
|
|
|
- * _omap_device_activate().
|
|
|
- */
|
|
|
-int omap_device_align_pm_lat(struct platform_device *pdev,
|
|
|
- u32 new_wakeup_lat_limit)
|
|
|
-{
|
|
|
- int ret = -EINVAL;
|
|
|
- struct omap_device *od;
|
|
|
-
|
|
|
- od = to_omap_device(pdev);
|
|
|
-
|
|
|
- if (new_wakeup_lat_limit == od->dev_wakeup_lat)
|
|
|
- return 0;
|
|
|
-
|
|
|
- od->_dev_wakeup_lat_limit = new_wakeup_lat_limit;
|
|
|
-
|
|
|
- if (od->_state != OMAP_DEVICE_STATE_IDLE)
|
|
|
- return 0;
|
|
|
- else if (new_wakeup_lat_limit > od->dev_wakeup_lat)
|
|
|
- ret = _omap_device_deactivate(od, USE_WAKEUP_LAT);
|
|
|
- else if (new_wakeup_lat_limit < od->dev_wakeup_lat)
|
|
|
- ret = _omap_device_activate(od, USE_WAKEUP_LAT);
|
|
|
-
|
|
|
- return ret;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * omap_device_get_pwrdm - return the powerdomain * associated with @od
|
|
|
- * @od: struct omap_device *
|
|
|
- *
|
|
|
- * Return the powerdomain associated with the first underlying
|
|
|
- * omap_hwmod for this omap_device. Intended for use by core OMAP PM
|
|
|
- * code. Returns NULL on error or a struct powerdomain * upon
|
|
|
- * success.
|
|
|
- */
|
|
|
-struct powerdomain *omap_device_get_pwrdm(struct omap_device *od)
|
|
|
-{
|
|
|
- /*
|
|
|
- * XXX Assumes that all omap_hwmod powerdomains are identical.
|
|
|
- * This may not necessarily be true. There should be a sanity
|
|
|
- * check in here to WARN() if any difference appears.
|
|
|
- */
|
|
|
- if (!od->hwmods_cnt)
|
|
|
- return NULL;
|
|
|
-
|
|
|
- return omap_hwmod_get_pwrdm(od->hwmods[0]);
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * omap_device_get_mpu_rt_va - return the MPU's virtual addr for the hwmod base
|
|
|
- * @od: struct omap_device *
|
|
|
- *
|
|
|
- * Return the MPU's virtual address for the base of the hwmod, from
|
|
|
- * the ioremap() that the hwmod code does. Only valid if there is one
|
|
|
- * hwmod associated with this device. Returns NULL if there are zero
|
|
|
- * or more than one hwmods associated with this omap_device;
|
|
|
- * otherwise, passes along the return value from
|
|
|
- * omap_hwmod_get_mpu_rt_va().
|
|
|
- */
|
|
|
-void __iomem *omap_device_get_rt_va(struct omap_device *od)
|
|
|
-{
|
|
|
- if (od->hwmods_cnt != 1)
|
|
|
- return NULL;
|
|
|
-
|
|
|
- return omap_hwmod_get_mpu_rt_va(od->hwmods[0]);
|
|
|
-}
|
|
|
-
|
|
|
/**
|
|
|
* omap_device_get_by_hwmod_name() - convert a hwmod name to
|
|
|
* device pointer.
|
|
@@ -1173,82 +830,6 @@ struct device *omap_device_get_by_hwmod_name(const char *oh_name)
|
|
|
|
|
|
return &oh->od->pdev->dev;
|
|
|
}
|
|
|
-EXPORT_SYMBOL(omap_device_get_by_hwmod_name);
|
|
|
-
|
|
|
-/*
|
|
|
- * Public functions intended for use in omap_device_pm_latency
|
|
|
- * .activate_func and .deactivate_func function pointers
|
|
|
- */
|
|
|
-
|
|
|
-/**
|
|
|
- * omap_device_enable_hwmods - call omap_hwmod_enable() on all hwmods
|
|
|
- * @od: struct omap_device *od
|
|
|
- *
|
|
|
- * Enable all underlying hwmods. Returns 0.
|
|
|
- */
|
|
|
-int omap_device_enable_hwmods(struct omap_device *od)
|
|
|
-{
|
|
|
- int i;
|
|
|
-
|
|
|
- for (i = 0; i < od->hwmods_cnt; i++)
|
|
|
- omap_hwmod_enable(od->hwmods[i]);
|
|
|
-
|
|
|
- /* XXX pass along return value here? */
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * omap_device_idle_hwmods - call omap_hwmod_idle() on all hwmods
|
|
|
- * @od: struct omap_device *od
|
|
|
- *
|
|
|
- * Idle all underlying hwmods. Returns 0.
|
|
|
- */
|
|
|
-int omap_device_idle_hwmods(struct omap_device *od)
|
|
|
-{
|
|
|
- int i;
|
|
|
-
|
|
|
- for (i = 0; i < od->hwmods_cnt; i++)
|
|
|
- omap_hwmod_idle(od->hwmods[i]);
|
|
|
-
|
|
|
- /* XXX pass along return value here? */
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * omap_device_disable_clocks - disable all main and interface clocks
|
|
|
- * @od: struct omap_device *od
|
|
|
- *
|
|
|
- * Disable the main functional clock and interface clock for all of the
|
|
|
- * omap_hwmods associated with the omap_device. Returns 0.
|
|
|
- */
|
|
|
-int omap_device_disable_clocks(struct omap_device *od)
|
|
|
-{
|
|
|
- int i;
|
|
|
-
|
|
|
- for (i = 0; i < od->hwmods_cnt; i++)
|
|
|
- omap_hwmod_disable_clocks(od->hwmods[i]);
|
|
|
-
|
|
|
- /* XXX pass along return value here? */
|
|
|
- return 0;
|
|
|
-}
|
|
|
-
|
|
|
-/**
|
|
|
- * omap_device_enable_clocks - enable all main and interface clocks
|
|
|
- * @od: struct omap_device *od
|
|
|
- *
|
|
|
- * Enable the main functional clock and interface clock for all of the
|
|
|
- * omap_hwmods associated with the omap_device. Returns 0.
|
|
|
- */
|
|
|
-int omap_device_enable_clocks(struct omap_device *od)
|
|
|
-{
|
|
|
- int i;
|
|
|
-
|
|
|
- for (i = 0; i < od->hwmods_cnt; i++)
|
|
|
- omap_hwmod_enable_clocks(od->hwmods[i]);
|
|
|
-
|
|
|
- /* XXX pass along return value here? */
|
|
|
- return 0;
|
|
|
-}
|
|
|
|
|
|
static struct notifier_block platform_nb = {
|
|
|
.notifier_call = _omap_device_notifier_call,
|