/** * struct omap_rproc_boot_data - boot data structure for the DSP omap rprocs * @syscon: regmap handle for the system control configuration module * @boot_reg: boot register offset within the @syscon regmap * @boot_reg_shift: bit-field shift required for the boot address value in * @boot_reg
*/ struct omap_rproc_boot_data { struct regmap *syscon; unsignedint boot_reg; unsignedint boot_reg_shift;
};
/** * struct omap_rproc_mem - internal memory structure * @cpu_addr: MPU virtual address of the memory region * @bus_addr: bus address used to access the memory region * @dev_addr: device address of the memory region from DSP view * @size: size of the memory region
*/ struct omap_rproc_mem { void __iomem *cpu_addr;
phys_addr_t bus_addr;
u32 dev_addr;
size_t size;
};
/** * struct omap_rproc_timer - data structure for a timer used by a omap rproc * @odt: timer pointer * @timer_ops: OMAP dmtimer ops for @odt timer * @irq: timer irq
*/ struct omap_rproc_timer { struct omap_dm_timer *odt; conststruct omap_dm_timer_ops *timer_ops; int irq;
};
/** * struct omap_rproc - omap remote processor state * @mbox: mailbox channel handle * @client: mailbox client to request the mailbox channel * @boot_data: boot data structure for setting processor boot address * @mem: internal memory regions data * @num_mems: number of internal memory regions * @num_timers: number of rproc timer(s) * @num_wd_timers: number of rproc watchdog timers * @timers: timer(s) info used by rproc * @autosuspend_delay: auto-suspend delay value to be used for runtime pm * @need_resume: if true a resume is needed in the system resume callback * @rproc: rproc handle * @reset: reset handle * @pm_comp: completion primitive to sync for suspend response * @fck: functional clock for the remoteproc * @suspend_acked: state machine flag to store the suspend request ack
*/ struct omap_rproc { struct mbox_chan *mbox; struct mbox_client client; struct omap_rproc_boot_data *boot_data; struct omap_rproc_mem *mem; int num_mems; int num_timers; int num_wd_timers; struct omap_rproc_timer *timers; int autosuspend_delay; bool need_resume; struct rproc *rproc; struct reset_control *reset; struct completion pm_comp; struct clk *fck; bool suspend_acked;
};
/** * struct omap_rproc_mem_data - memory definitions for an omap remote processor * @name: name for this memory entry * @dev_addr: device address for the memory entry
*/ struct omap_rproc_mem_data { constchar *name; const u32 dev_addr;
};
/** * struct omap_rproc_dev_data - device data for the omap remote processor * @device_name: device name of the remote processor * @mems: memory definitions for this remote processor
*/ struct omap_rproc_dev_data { constchar *device_name; conststruct omap_rproc_mem_data *mems;
};
/** * omap_rproc_request_timer() - request a timer for a remoteproc * @dev: device requesting the timer * @np: device node pointer to the desired timer * @timer: handle to a struct omap_rproc_timer to return the timer handle * * This helper function is used primarily to request a timer associated with * a remoteproc. The returned handle is stored in the .odt field of the * @timer structure passed in, and is used to invoke other timer specific * ops (like starting a timer either during device initialization or during * a resume operation, or for stopping/freeing a timer). * * Return: 0 on success, otherwise an appropriate failure
*/ staticint omap_rproc_request_timer(struct device *dev, struct device_node *np, struct omap_rproc_timer *timer)
{ int ret;
timer->odt = timer->timer_ops->request_by_node(np); if (!timer->odt) {
dev_err(dev, "request for timer node %p failed\n", np); return -EBUSY;
}
ret = timer->timer_ops->set_source(timer->odt, OMAP_TIMER_SRC_SYS_CLK); if (ret) {
dev_err(dev, "error setting OMAP_TIMER_SRC_SYS_CLK as source for timer node %p\n",
np);
timer->timer_ops->free(timer->odt); return ret;
}
/* clean counter, remoteproc code will set the value */
timer->timer_ops->set_load(timer->odt, 0);
return 0;
}
/** * omap_rproc_start_timer() - start a timer for a remoteproc * @timer: handle to a OMAP rproc timer * * This helper function is used to start a timer associated with a remoteproc, * obtained using the request_timer ops. The helper function needs to be * invoked by the driver to start the timer (during device initialization) * or to just resume the timer. * * Return: 0 on success, otherwise a failure as returned by DMTimer ops
*/ staticinlineint omap_rproc_start_timer(struct omap_rproc_timer *timer)
{ return timer->timer_ops->start(timer->odt);
}
/** * omap_rproc_stop_timer() - stop a timer for a remoteproc * @timer: handle to a OMAP rproc timer * * This helper function is used to disable a timer associated with a * remoteproc, and needs to be called either during a device shutdown * or suspend operation. The separate helper function allows the driver * to just stop a timer without having to release the timer during a * suspend operation. * * Return: 0 on success, otherwise a failure as returned by DMTimer ops
*/ staticinlineint omap_rproc_stop_timer(struct omap_rproc_timer *timer)
{ return timer->timer_ops->stop(timer->odt);
}
/** * omap_rproc_release_timer() - release a timer for a remoteproc * @timer: handle to a OMAP rproc timer * * This helper function is used primarily to release a timer associated * with a remoteproc. The dmtimer will be available for other clients to * use once released. * * Return: 0 on success, otherwise a failure as returned by DMTimer ops
*/ staticinlineint omap_rproc_release_timer(struct omap_rproc_timer *timer)
{ return timer->timer_ops->free(timer->odt);
}
/** * omap_rproc_get_timer_irq() - get the irq for a timer * @timer: handle to a OMAP rproc timer * * This function is used to get the irq associated with a watchdog timer. The * function is called by the OMAP remoteproc driver to register a interrupt * handler to handle watchdog events on the remote processor. * * Return: irq id on success, otherwise a failure as returned by DMTimer ops
*/ staticinlineint omap_rproc_get_timer_irq(struct omap_rproc_timer *timer)
{ return timer->timer_ops->get_irq(timer->odt);
}
/** * omap_rproc_ack_timer_irq() - acknowledge a timer irq * @timer: handle to a OMAP rproc timer * * This function is used to clear the irq associated with a watchdog timer. * The function is called by the OMAP remoteproc upon a watchdog event on the * remote processor to clear the interrupt status of the watchdog timer.
*/ staticinlinevoid omap_rproc_ack_timer_irq(struct omap_rproc_timer *timer)
{
timer->timer_ops->write_status(timer->odt, OMAP_TIMER_INT_OVERFLOW);
}
/** * omap_rproc_watchdog_isr() - Watchdog ISR handler for remoteproc device * @irq: IRQ number associated with a watchdog timer * @data: IRQ handler data * * This ISR routine executes the required necessary low-level code to * acknowledge a watchdog timer interrupt. There can be multiple watchdog * timers associated with a rproc (like IPUs which have 2 watchdog timers, * one per Cortex M3/M4 core), so a lookup has to be performed to identify * the timer to acknowledge its interrupt. * * The function also invokes rproc_report_crash to report the watchdog event * to the remoteproc driver core, to trigger a recovery. * * Return: IRQ_HANDLED on success, otherwise IRQ_NONE
*/ static irqreturn_t omap_rproc_watchdog_isr(int irq, void *data)
{ struct rproc *rproc = data; struct omap_rproc *oproc = rproc->priv; struct device *dev = rproc->dev.parent; struct omap_rproc_timer *timers = oproc->timers; struct omap_rproc_timer *wd_timer = NULL; int num_timers = oproc->num_timers + oproc->num_wd_timers; int i;
for (i = oproc->num_timers; i < num_timers; i++) { if (timers[i].irq > 0 && irq == timers[i].irq) {
wd_timer = &timers[i]; break;
}
}
if (!wd_timer) {
dev_err(dev, "invalid timer\n"); return IRQ_NONE;
}
omap_rproc_ack_timer_irq(wd_timer);
rproc_report_crash(rproc, RPROC_WATCHDOG);
return IRQ_HANDLED;
}
/** * omap_rproc_enable_timers() - enable the timers for a remoteproc * @rproc: handle of a remote processor * @configure: boolean flag used to acquire and configure the timer handle * * This function is used primarily to enable the timers associated with * a remoteproc. The configure flag is provided to allow the driver * to either acquire and start a timer (during device initialization) or * to just start a timer (during a resume operation). * * Return: 0 on success, otherwise an appropriate failure
*/ staticint omap_rproc_enable_timers(struct rproc *rproc, bool configure)
{ int i; int ret = 0; struct platform_device *tpdev; struct dmtimer_platform_data *tpdata; conststruct omap_dm_timer_ops *timer_ops; struct omap_rproc *oproc = rproc->priv; struct omap_rproc_timer *timers = oproc->timers; struct device *dev = rproc->dev.parent; struct device_node *np = NULL; int num_timers = oproc->num_timers + oproc->num_wd_timers;
if (!num_timers) return 0;
if (!configure) goto start_timers;
for (i = 0; i < num_timers; i++) { if (i < oproc->num_timers)
np = of_parse_phandle(dev->of_node, "ti,timers", i); else
np = of_parse_phandle(dev->of_node, "ti,watchdog-timers",
(i - oproc->num_timers)); if (!np) {
ret = -ENXIO;
dev_err(dev, "device node lookup for timer at index %d failed: %d\n",
i < oproc->num_timers ? i :
i - oproc->num_timers, ret); goto free_timers;
}
tpdev = of_find_device_by_node(np); if (!tpdev) {
ret = -ENODEV;
dev_err(dev, "could not get timer platform device\n"); goto put_node;
}
tpdata = dev_get_platdata(&tpdev->dev);
put_device(&tpdev->dev); if (!tpdata) {
ret = -EINVAL;
dev_err(dev, "dmtimer pdata structure NULL\n"); goto put_node;
}
timer_ops = tpdata->timer_ops; if (!timer_ops || !timer_ops->request_by_node ||
!timer_ops->set_source || !timer_ops->set_load ||
!timer_ops->free || !timer_ops->start ||
!timer_ops->stop || !timer_ops->get_irq ||
!timer_ops->write_status) {
ret = -EINVAL;
dev_err(dev, "device does not have required timer ops\n"); goto put_node;
}
timers[i].irq = -1;
timers[i].timer_ops = timer_ops;
ret = omap_rproc_request_timer(dev, np, &timers[i]); if (ret) {
dev_err(dev, "request for timer %p failed: %d\n", np,
ret); goto put_node;
}
of_node_put(np);
if (i >= oproc->num_timers) {
timers[i].irq = omap_rproc_get_timer_irq(&timers[i]); if (timers[i].irq < 0) {
dev_err(dev, "get_irq for timer %p failed: %d\n",
np, timers[i].irq);
ret = -EBUSY; goto free_timers;
}
start_timers: for (i = 0; i < num_timers; i++) {
ret = omap_rproc_start_timer(&timers[i]); if (ret) {
dev_err(dev, "start timer %p failed failed: %d\n", np,
ret); break;
}
} if (ret) { while (i >= 0) {
omap_rproc_stop_timer(&timers[i]);
i--;
} goto put_node;
} return 0;
put_node: if (configure)
of_node_put(np);
free_timers: while (i--) { if (i >= oproc->num_timers)
free_irq(timers[i].irq, rproc);
omap_rproc_release_timer(&timers[i]);
timers[i].odt = NULL;
timers[i].timer_ops = NULL;
timers[i].irq = -1;
}
return ret;
}
/** * omap_rproc_disable_timers() - disable the timers for a remoteproc * @rproc: handle of a remote processor * @configure: boolean flag used to release the timer handle * * This function is used primarily to disable the timers associated with * a remoteproc. The configure flag is provided to allow the driver * to either stop and release a timer (during device shutdown) or to just * stop a timer (during a suspend operation). * * Return: 0 on success or no timers
*/ staticint omap_rproc_disable_timers(struct rproc *rproc, bool configure)
{ int i; struct omap_rproc *oproc = rproc->priv; struct omap_rproc_timer *timers = oproc->timers; int num_timers = oproc->num_timers + oproc->num_wd_timers;
if (!num_timers) return 0;
for (i = 0; i < num_timers; i++) {
omap_rproc_stop_timer(&timers[i]); if (configure) { if (i >= oproc->num_timers)
free_irq(timers[i].irq, rproc);
omap_rproc_release_timer(&timers[i]);
timers[i].odt = NULL;
timers[i].timer_ops = NULL;
timers[i].irq = -1;
}
}
return 0;
}
/** * omap_rproc_mbox_callback() - inbound mailbox message handler * @client: mailbox client pointer used for requesting the mailbox channel * @data: mailbox payload * * This handler is invoked by omap's mailbox driver whenever a mailbox * message is received. Usually, the mailbox payload simply contains * the index of the virtqueue that is kicked by the remote processor, * and we let remoteproc core handle it. * * In addition to virtqueue indices, we also have some out-of-band values * that indicates different events. Those values are deliberately very * big so they don't coincide with virtqueue indices.
*/ staticvoid omap_rproc_mbox_callback(struct mbox_client *client, void *data)
{ struct omap_rproc *oproc = container_of(client, struct omap_rproc,
client); struct device *dev = oproc->rproc->dev.parent; constchar *name = oproc->rproc->name;
u32 msg = (u32)data;
dev_dbg(dev, "mbox msg: 0x%x\n", msg);
switch (msg) { case RP_MBOX_CRASH: /* * remoteproc detected an exception, notify the rproc core. * The remoteproc core will handle the recovery.
*/
dev_err(dev, "omap rproc %s crashed\n", name);
rproc_report_crash(oproc->rproc, RPROC_FATAL_ERROR); break; case RP_MBOX_ECHO_REPLY:
dev_info(dev, "received echo reply from %s\n", name); break; case RP_MBOX_SUSPEND_ACK: case RP_MBOX_SUSPEND_CANCEL:
oproc->suspend_acked = msg == RP_MBOX_SUSPEND_ACK;
complete(&oproc->pm_comp); break; default: if (msg >= RP_MBOX_READY && msg < RP_MBOX_END_MSG) return; if (msg > oproc->rproc->max_notifyid) {
dev_dbg(dev, "dropping unknown message 0x%x", msg); return;
} /* msg contains the index of the triggered vring */ if (rproc_vq_interrupt(oproc->rproc, msg) == IRQ_NONE)
dev_dbg(dev, "no message was found in vqid %d\n", msg);
}
}
/* kick a virtqueue */ staticvoid omap_rproc_kick(struct rproc *rproc, int vqid)
{ struct omap_rproc *oproc = rproc->priv; struct device *dev = rproc->dev.parent; int ret;
/* wake up the rproc before kicking it */
ret = pm_runtime_get_sync(dev); if (WARN_ON(ret < 0)) {
dev_err(dev, "pm_runtime_get_sync() failed during kick, ret = %d\n",
ret);
pm_runtime_put_noidle(dev); return;
}
/* send the index of the triggered virtqueue in the mailbox payload */
ret = mbox_send_message(oproc->mbox, (void *)vqid); if (ret < 0)
dev_err(dev, "failed to send mailbox message, status = %d\n",
ret);
/** * omap_rproc_write_dsp_boot_addr() - set boot address for DSP remote processor * @rproc: handle of a remote processor * * Set boot address for a supported DSP remote processor. * * Return: 0 on success, or -EINVAL if boot address is not aligned properly
*/ staticint omap_rproc_write_dsp_boot_addr(struct rproc *rproc)
{ struct device *dev = rproc->dev.parent; struct omap_rproc *oproc = rproc->priv; struct omap_rproc_boot_data *bdata = oproc->boot_data;
u32 offset = bdata->boot_reg;
u32 value;
u32 mask;
if (rproc->bootaddr & (SZ_1K - 1)) {
dev_err(dev, "invalid boot address 0x%llx, must be aligned on a 1KB boundary\n",
rproc->bootaddr); return -EINVAL;
}
/* * Power up the remote processor. * * This function will be invoked only after the firmware for this rproc * was loaded, parsed successfully, and all of its resource requirements * were met.
*/ staticint omap_rproc_start(struct rproc *rproc)
{ struct omap_rproc *oproc = rproc->priv; struct device *dev = rproc->dev.parent; int ret; struct mbox_client *client = &oproc->client;
if (oproc->boot_data) {
ret = omap_rproc_write_dsp_boot_addr(rproc); if (ret) return ret;
}
oproc->mbox = mbox_request_channel(client, 0); if (IS_ERR(oproc->mbox)) {
ret = -EBUSY;
dev_err(dev, "mbox_request_channel failed: %ld\n",
PTR_ERR(oproc->mbox)); return ret;
}
/* * Ping the remote processor. this is only for sanity-sake; * there is no functional effect whatsoever. * * Note that the reply will _not_ arrive immediately: this message * will wait in the mailbox fifo until the remote processor is booted.
*/
ret = mbox_send_message(oproc->mbox, (void *)RP_MBOX_ECHO_REQUEST); if (ret < 0) {
dev_err(dev, "mbox_send_message failed: %d\n", ret); goto put_mbox;
}
ret = omap_rproc_enable_timers(rproc, true); if (ret) {
dev_err(dev, "omap_rproc_enable_timers failed: %d\n", ret); goto put_mbox;
}
ret = reset_control_deassert(oproc->reset); if (ret) {
dev_err(dev, "reset control deassert failed: %d\n", ret); goto disable_timers;
}
/* * remote processor is up, so update the runtime pm status and * enable the auto-suspend. The device usage count is incremented * manually for balancing it for auto-suspend
*/
pm_runtime_set_active(dev);
pm_runtime_use_autosuspend(dev);
pm_runtime_get_noresume(dev);
pm_runtime_enable(dev);
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
/* power off the remote processor */ staticint omap_rproc_stop(struct rproc *rproc)
{ struct device *dev = rproc->dev.parent; struct omap_rproc *oproc = rproc->priv; int ret;
/* * cancel any possible scheduled runtime suspend by incrementing * the device usage count, and resuming the device. The remoteproc * also needs to be woken up if suspended, to avoid the remoteproc * OS to continue to remember any context that it has saved, and * avoid potential issues in misindentifying a subsequent device * reboot as a power restore boot
*/
ret = pm_runtime_get_sync(dev); if (ret < 0) {
pm_runtime_put_noidle(dev); return ret;
}
ret = reset_control_assert(oproc->reset); if (ret) goto out;
ret = omap_rproc_disable_timers(rproc, true); if (ret) goto enable_device;
mbox_free_channel(oproc->mbox);
/* * update the runtime pm states and status now that the remoteproc * has stopped
*/
pm_runtime_disable(dev);
pm_runtime_dont_use_autosuspend(dev);
pm_runtime_put_noidle(dev);
pm_runtime_set_suspended(dev);
return 0;
enable_device:
reset_control_deassert(oproc->reset);
out: /* schedule the next auto-suspend */
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev); return ret;
}
/** * omap_rproc_da_to_va() - internal memory translation helper * @rproc: remote processor to apply the address translation for * @da: device address to translate * @len: length of the memory buffer * @is_iomem: pointer filled in to indicate if @da is iomapped memory * * Custom function implementing the rproc .da_to_va ops to provide address * translation (device address to kernel virtual address) for internal RAMs * present in a DSP or IPU device). The translated addresses can be used * either by the remoteproc core for loading, or by any rpmsg bus drivers. * * Return: translated virtual address in kernel memory space on success, * or NULL on failure.
*/ staticvoid *omap_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem)
{ struct omap_rproc *oproc = rproc->priv; int i;
u32 offset;
if (len <= 0) return NULL;
if (!oproc->num_mems) return NULL;
for (i = 0; i < oproc->num_mems; i++) { if (da >= oproc->mem[i].dev_addr && da + len <=
oproc->mem[i].dev_addr + oproc->mem[i].size) {
offset = da - oproc->mem[i].dev_addr; /* __force to make sparse happy with type conversion */ return (__force void *)(oproc->mem[i].cpu_addr +
offset);
}
}
ret = wait_for_completion_timeout(&oproc->pm_comp, to); if (!oproc->suspend_acked) return -EBUSY;
/* * The remoteproc side is returning the ACK message before saving the * context, because the context saving is performed within a SYS/BIOS * function, and it cannot have any inter-dependencies against the IPC * layer. Also, as the SYS/BIOS needs to preserve properly the processor * register set, sending this ACK or signalling the completion of the * context save through a shared memory variable can never be the * absolute last thing to be executed on the remoteproc side, and the * MPU cannot use the ACK message as a sync point to put the remoteproc * into reset. The only way to ensure that the remote processor has * completed saving the context is to check that the module has reached * STANDBY state (after saving the context, the SYS/BIOS executes the * appropriate target-specific WFI instruction causing the module to * enter STANDBY).
*/ while (!_is_rproc_in_standby(oproc)) { if (time_after(jiffies, ta)) return -ETIME;
schedule();
}
ret = reset_control_assert(oproc->reset); if (ret) {
dev_err(dev, "reset assert during suspend failed %d\n", ret); return ret;
}
ret = omap_rproc_disable_timers(rproc, false); if (ret) {
dev_err(dev, "disabling timers during suspend failed %d\n",
ret); goto enable_device;
}
/* * IOMMUs would have to be disabled specifically for runtime suspend. * They are handled automatically through System PM callbacks for * regular system suspend
*/ if (auto_suspend) {
ret = omap_iommu_domain_deactivate(rproc->domain); if (ret) {
dev_err(dev, "iommu domain deactivate failed %d\n",
ret); goto enable_timers;
}
}
/* * IOMMUs would have to be enabled specifically for runtime resume. * They would have been already enabled automatically through System * PM callbacks for regular system resume
*/ if (auto_suspend) {
ret = omap_iommu_domain_activate(rproc->domain); if (ret) {
dev_err(dev, "omap_iommu activate failed %d\n", ret); goto out;
}
}
/* boot address could be lost after suspend, so restore it */ if (oproc->boot_data) {
ret = omap_rproc_write_dsp_boot_addr(rproc); if (ret) {
dev_err(dev, "boot address restore failed %d\n", ret); goto suspend_iommu;
}
}
ret = omap_rproc_enable_timers(rproc, false); if (ret) {
dev_err(dev, "enabling timers during resume failed %d\n", ret); goto suspend_iommu;
}
ret = reset_control_deassert(oproc->reset); if (ret) {
dev_err(dev, "reset deassert during resume failed %d\n", ret); goto disable_timers;
}
staticint __maybe_unused omap_rproc_suspend(struct device *dev)
{ struct rproc *rproc = dev_get_drvdata(dev); struct omap_rproc *oproc = rproc->priv; int ret = 0;
mutex_lock(&rproc->lock); if (rproc->state == RPROC_OFFLINE) goto out;
if (rproc->state == RPROC_SUSPENDED) goto out;
if (rproc->state != RPROC_RUNNING) {
ret = -EBUSY; goto out;
}
ret = _omap_rproc_suspend(rproc, false); if (ret) {
dev_err(dev, "suspend failed %d\n", ret); goto out;
}
/* * remoteproc is running at the time of system suspend, so remember * it so as to wake it up during system resume
*/
oproc->need_resume = true;
rproc->state = RPROC_SUSPENDED;
out:
mutex_unlock(&rproc->lock); return ret;
}
staticint __maybe_unused omap_rproc_resume(struct device *dev)
{ struct rproc *rproc = dev_get_drvdata(dev); struct omap_rproc *oproc = rproc->priv; int ret = 0;
mutex_lock(&rproc->lock); if (rproc->state == RPROC_OFFLINE) goto out;
if (rproc->state != RPROC_SUSPENDED) {
ret = -EBUSY; goto out;
}
/* * remoteproc was auto-suspended at the time of system suspend, * so no need to wake-up the processor (leave it in suspended * state, will be woken up during a subsequent runtime_resume)
*/ if (!oproc->need_resume) goto out;
ret = _omap_rproc_resume(rproc, false); if (ret) {
dev_err(dev, "resume failed %d\n", ret); goto out;
}
mutex_lock(&rproc->lock); if (rproc->state == RPROC_CRASHED) {
dev_dbg(dev, "rproc cannot be runtime suspended when crashed!\n");
ret = -EBUSY; goto out;
}
if (WARN_ON(rproc->state != RPROC_RUNNING)) {
dev_err(dev, "rproc cannot be runtime suspended when not running!\n");
ret = -EBUSY; goto out;
}
/* * do not even attempt suspend if the remote processor is not * idled for runtime auto-suspend
*/ if (!_is_rproc_in_standby(oproc)) {
ret = -EBUSY; goto abort;
}
ret = _omap_rproc_suspend(rproc, true); if (ret) goto abort;
mutex_lock(&rproc->lock); if (WARN_ON(rproc->state != RPROC_SUSPENDED)) {
dev_err(dev, "rproc cannot be runtime resumed if not suspended! state=%d\n",
rproc->state);
ret = -EBUSY; goto out;
}
ret = _omap_rproc_resume(rproc, true); if (ret) {
dev_err(dev, "runtime resume failed %d\n", ret); goto out;
}
data = of_device_get_match_data(&pdev->dev); if (!data) return -ENODEV;
if (!of_property_read_bool(np, "ti,bootreg")) return 0;
oproc->boot_data = devm_kzalloc(&pdev->dev, sizeof(*oproc->boot_data),
GFP_KERNEL); if (!oproc->boot_data) return -ENOMEM;
oproc->boot_data->syscon =
syscon_regmap_lookup_by_phandle(np, "ti,bootreg"); if (IS_ERR(oproc->boot_data->syscon)) return PTR_ERR(oproc->boot_data->syscon);
if (of_property_read_u32_index(np, "ti,bootreg", 1,
&oproc->boot_data->boot_reg)) {
dev_err(&pdev->dev, "couldn't get the boot register\n"); return -EINVAL;
}
ret = of_count_phandle_with_args(np, "ti,watchdog-timers", NULL); if (ret <= 0) {
dev_dbg(dev, "device does not have watchdog timers, status = %d\n",
ret);
ret = 0;
}
/* * Timer nodes are directly used in client nodes as phandles, so * retrieve the count using appropriate size
*/
oproc->num_timers = of_count_phandle_with_args(np, "ti,timers", NULL); if (oproc->num_timers <= 0) {
dev_dbg(dev, "device does not have timers, status = %d\n",
oproc->num_timers);
oproc->num_timers = 0;
}
oproc = rproc->priv;
oproc->rproc = rproc;
oproc->reset = reset; /* All existing OMAP IPU and DSP processors have an MMU */
rproc->has_iommu = true;
#ifdef CONFIG_ARM_DMA_USE_IOMMU /* * Throw away the ARM DMA mapping that we'll never use, so it doesn't * interfere with the core rproc->domain and we get the right DMA ops.
*/ if (pdev->dev.archdata.mapping) { struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(&pdev->dev);
oproc->fck = devm_clk_get(&pdev->dev, 0); if (IS_ERR(oproc->fck)) return PTR_ERR(oproc->fck);
ret = of_reserved_mem_device_init(&pdev->dev); if (ret) {
dev_warn(&pdev->dev, "device does not have specific CMA pool.\n");
dev_warn(&pdev->dev, "Typically this should be provided,\n");
dev_warn(&pdev->dev, "only omit if you know what you are doing.\n");
}
ret = devm_add_action_or_reset(&pdev->dev, omap_rproc_mem_release, &pdev->dev); if (ret) return ret;
platform_set_drvdata(pdev, rproc);
ret = devm_rproc_add(&pdev->dev, rproc); if (ret) return ret;
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