}
}
+static bool sdhci_pm_qos_use_dma_latency(struct sdhci_host *host)
+{
+ return host->dma_latency != PM_QOS_DEFAULT_VALUE;
+}
+
+static void sdhci_pm_qos_set_dma_latency(struct sdhci_host *host,
+ struct mmc_request *mrq)
+{
+ if (sdhci_pm_qos_use_dma_latency(host) && mrq->data &&
+ (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA))) {
+ pm_qos_update_request(&host->pm_qos_req, host->dma_latency);
+ host->pm_qos_set = true;
+ }
+}
+
+static void sdhci_pm_qos_unset(struct sdhci_host *host)
+{
+ unsigned int delay;
+
+ if (host->pm_qos_set) {
+ host->pm_qos_set = false;
+ delay = host->consecutive_req ? host->lat_cancel_delay : 0;
+ pm_qos_cancel_request_lazy(&host->pm_qos_req, delay);
+ }
+}
+
+static void sdhci_pm_qos_add(struct sdhci_host *host)
+{
+ if (sdhci_pm_qos_use_dma_latency(host))
+ pm_qos_add_request(&host->pm_qos_req, PM_QOS_CPU_DMA_LATENCY,
+ PM_QOS_DEFAULT_VALUE);
+}
+
+static void sdhci_pm_qos_remove(struct sdhci_host *host)
+{
+ if (pm_qos_request_active(&host->pm_qos_req))
+ pm_qos_remove_request(&host->pm_qos_req);
+}
+
static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
{
u8 ctrl;
sdhci_runtime_pm_get(host);
+ sdhci_pm_qos_set_dma_latency(host, mrq);
+
/* Firstly check card presence */
present = sdhci_do_get_cd(host);
}
host->mrq = mrq;
+ host->consecutive_req = 0;
if (!present || host->flags & SDHCI_DEVICE_DEAD) {
host->mrq->cmd->error = -ENOMEDIUM;
{
struct sdhci_host *host = mmc_priv(mmc);
+ host->consecutive_req = 1;
+
if (mrq->data->host_cookie) {
mrq->data->host_cookie = 0;
return;
host = (struct sdhci_host*)param;
+ sdhci_pm_qos_unset(host);
+
spin_lock_irqsave(&host->lock, flags);
/*
host = mmc_priv(mmc);
host->mmc = mmc;
+ host->dma_latency = PM_QOS_DEFAULT_VALUE;
return host;
}
*/
mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535;
+ sdhci_pm_qos_add(host);
+
/*
* Init tasklets.
*/
#endif
untasklet:
tasklet_kill(&host->finish_tasklet);
+ sdhci_pm_qos_remove(host);
return ret;
}
host->adma_table = NULL;
host->align_buffer = NULL;
+
+ sdhci_pm_qos_remove(host);
}
EXPORT_SYMBOL_GPL(sdhci_remove_host);