mirror of https://gitee.com/openkylin/linux.git
Merge branch 'topic/tegra' into for-linus
This commit is contained in:
Vinod Koul
commit
2a2d0f6386
|
|
@ -296,7 +296,7 @@ static struct tegra_dma_desc *tegra_dma_desc_get(
|
|||
spin_unlock_irqrestore(&tdc->lock, flags);
|
||||
|
||||
/* Allocate DMA desc */
|
||||
dma_desc = kzalloc(sizeof(*dma_desc), GFP_ATOMIC);
|
||||
dma_desc = kzalloc(sizeof(*dma_desc), GFP_NOWAIT);
|
||||
if (!dma_desc) {
|
||||
dev_err(tdc2dev(tdc), "dma_desc alloc failed\n");
|
||||
return NULL;
|
||||
|
|
@ -336,7 +336,7 @@ static struct tegra_dma_sg_req *tegra_dma_sg_req_get(
|
|||
}
|
||||
spin_unlock_irqrestore(&tdc->lock, flags);
|
||||
|
||||
sg_req = kzalloc(sizeof(struct tegra_dma_sg_req), GFP_ATOMIC);
|
||||
sg_req = kzalloc(sizeof(struct tegra_dma_sg_req), GFP_NOWAIT);
|
||||
if (!sg_req)
|
||||
dev_err(tdc2dev(tdc), "sg_req alloc failed\n");
|
||||
return sg_req;
|
||||
|
|
@ -1186,10 +1186,12 @@ static int tegra_dma_alloc_chan_resources(struct dma_chan *dc)
|
|||
|
||||
dma_cookie_init(&tdc->dma_chan);
|
||||
tdc->config_init = false;
|
||||
ret = clk_prepare_enable(tdma->dma_clk);
|
||||
|
||||
ret = pm_runtime_get_sync(tdma->dev);
|
||||
if (ret < 0)
|
||||
dev_err(tdc2dev(tdc), "clk_prepare_enable failed: %d\n", ret);
|
||||
return ret;
|
||||
return ret;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void tegra_dma_free_chan_resources(struct dma_chan *dc)
|
||||
|
|
@ -1232,7 +1234,7 @@ static void tegra_dma_free_chan_resources(struct dma_chan *dc)
|
|||
list_del(&sg_req->node);
|
||||
kfree(sg_req);
|
||||
}
|
||||
clk_disable_unprepare(tdma->dma_clk);
|
||||
pm_runtime_put(tdma->dev);
|
||||
|
||||
tdc->slave_id = 0;
|
||||
}
|
||||
|
|
@ -1356,20 +1358,14 @@ static int tegra_dma_probe(struct platform_device *pdev)
|
|||
spin_lock_init(&tdma->global_lock);
|
||||
|
||||
pm_runtime_enable(&pdev->dev);
|
||||
if (!pm_runtime_enabled(&pdev->dev)) {
|
||||
if (!pm_runtime_enabled(&pdev->dev))
|
||||
ret = tegra_dma_runtime_resume(&pdev->dev);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev, "dma_runtime_resume failed %d\n",
|
||||
ret);
|
||||
goto err_pm_disable;
|
||||
}
|
||||
}
|
||||
else
|
||||
ret = pm_runtime_get_sync(&pdev->dev);
|
||||
|
||||
/* Enable clock before accessing registers */
|
||||
ret = clk_prepare_enable(tdma->dma_clk);
|
||||
if (ret < 0) {
|
||||
dev_err(&pdev->dev, "clk_prepare_enable failed: %d\n", ret);
|
||||
goto err_pm_disable;
|
||||
pm_runtime_disable(&pdev->dev);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Reset DMA controller */
|
||||
|
|
@ -1382,7 +1378,7 @@ static int tegra_dma_probe(struct platform_device *pdev)
|
|||
tdma_write(tdma, TEGRA_APBDMA_CONTROL, 0);
|
||||
tdma_write(tdma, TEGRA_APBDMA_IRQ_MASK_SET, 0xFFFFFFFFul);
|
||||
|
||||
clk_disable_unprepare(tdma->dma_clk);
|
||||
pm_runtime_put(&pdev->dev);
|
||||
|
||||
INIT_LIST_HEAD(&tdma->dma_dev.channels);
|
||||
for (i = 0; i < cdata->nr_channels; i++) {
|
||||
|
|
@ -1400,8 +1396,7 @@ static int tegra_dma_probe(struct platform_device *pdev)
|
|||
}
|
||||
tdc->irq = res->start;
|
||||
snprintf(tdc->name, sizeof(tdc->name), "apbdma.%d", i);
|
||||
ret = devm_request_irq(&pdev->dev, tdc->irq,
|
||||
tegra_dma_isr, 0, tdc->name, tdc);
|
||||
ret = request_irq(tdc->irq, tegra_dma_isr, 0, tdc->name, tdc);
|
||||
if (ret) {
|
||||
dev_err(&pdev->dev,
|
||||
"request_irq failed with err %d channel %d\n",
|
||||
|
|
@ -1482,10 +1477,11 @@ static int tegra_dma_probe(struct platform_device *pdev)
|
|||
err_irq:
|
||||
while (--i >= 0) {
|
||||
struct tegra_dma_channel *tdc = &tdma->channels[i];
|
||||
|
||||
free_irq(tdc->irq, tdc);
|
||||
tasklet_kill(&tdc->tasklet);
|
||||
}
|
||||
|
||||
err_pm_disable:
|
||||
pm_runtime_disable(&pdev->dev);
|
||||
if (!pm_runtime_status_suspended(&pdev->dev))
|
||||
tegra_dma_runtime_suspend(&pdev->dev);
|
||||
|
|
@ -1502,6 +1498,7 @@ static int tegra_dma_remove(struct platform_device *pdev)
|
|||
|
||||
for (i = 0; i < tdma->chip_data->nr_channels; ++i) {
|
||||
tdc = &tdma->channels[i];
|
||||
free_irq(tdc->irq, tdc);
|
||||
tasklet_kill(&tdc->tasklet);
|
||||
}
|
||||
|
||||
|
|
@ -1514,8 +1511,7 @@ static int tegra_dma_remove(struct platform_device *pdev)
|
|||
|
||||
static int tegra_dma_runtime_suspend(struct device *dev)
|
||||
{
|
||||
struct platform_device *pdev = to_platform_device(dev);
|
||||
struct tegra_dma *tdma = platform_get_drvdata(pdev);
|
||||
struct tegra_dma *tdma = dev_get_drvdata(dev);
|
||||
|
||||
clk_disable_unprepare(tdma->dma_clk);
|
||||
return 0;
|
||||
|
|
@ -1523,8 +1519,7 @@ static int tegra_dma_runtime_suspend(struct device *dev)
|
|||
|
||||
static int tegra_dma_runtime_resume(struct device *dev)
|
||||
{
|
||||
struct platform_device *pdev = to_platform_device(dev);
|
||||
struct tegra_dma *tdma = platform_get_drvdata(pdev);
|
||||
struct tegra_dma *tdma = dev_get_drvdata(dev);
|
||||
int ret;
|
||||
|
||||
ret = clk_prepare_enable(tdma->dma_clk);
|
||||
|
|
@ -1543,7 +1538,7 @@ static int tegra_dma_pm_suspend(struct device *dev)
|
|||
int ret;
|
||||
|
||||
/* Enable clock before accessing register */
|
||||
ret = tegra_dma_runtime_resume(dev);
|
||||
ret = pm_runtime_get_sync(dev);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
|
|
@ -1552,15 +1547,22 @@ static int tegra_dma_pm_suspend(struct device *dev)
|
|||
struct tegra_dma_channel *tdc = &tdma->channels[i];
|
||||
struct tegra_dma_channel_regs *ch_reg = &tdc->channel_reg;
|
||||
|
||||
/* Only save the state of DMA channels that are in use */
|
||||
if (!tdc->config_init)
|
||||
continue;
|
||||
|
||||
ch_reg->csr = tdc_read(tdc, TEGRA_APBDMA_CHAN_CSR);
|
||||
ch_reg->ahb_ptr = tdc_read(tdc, TEGRA_APBDMA_CHAN_AHBPTR);
|
||||
ch_reg->apb_ptr = tdc_read(tdc, TEGRA_APBDMA_CHAN_APBPTR);
|
||||
ch_reg->ahb_seq = tdc_read(tdc, TEGRA_APBDMA_CHAN_AHBSEQ);
|
||||
ch_reg->apb_seq = tdc_read(tdc, TEGRA_APBDMA_CHAN_APBSEQ);
|
||||
if (tdma->chip_data->support_separate_wcount_reg)
|
||||
ch_reg->wcount = tdc_read(tdc,
|
||||
TEGRA_APBDMA_CHAN_WCOUNT);
|
||||
}
|
||||
|
||||
/* Disable clock */
|
||||
tegra_dma_runtime_suspend(dev);
|
||||
pm_runtime_put(dev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -1571,7 +1573,7 @@ static int tegra_dma_pm_resume(struct device *dev)
|
|||
int ret;
|
||||
|
||||
/* Enable clock before accessing register */
|
||||
ret = tegra_dma_runtime_resume(dev);
|
||||
ret = pm_runtime_get_sync(dev);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
|
|
@ -1583,6 +1585,13 @@ static int tegra_dma_pm_resume(struct device *dev)
|
|||
struct tegra_dma_channel *tdc = &tdma->channels[i];
|
||||
struct tegra_dma_channel_regs *ch_reg = &tdc->channel_reg;
|
||||
|
||||
/* Only restore the state of DMA channels that are in use */
|
||||
if (!tdc->config_init)
|
||||
continue;
|
||||
|
||||
if (tdma->chip_data->support_separate_wcount_reg)
|
||||
tdc_write(tdc, TEGRA_APBDMA_CHAN_WCOUNT,
|
||||
ch_reg->wcount);
|
||||
tdc_write(tdc, TEGRA_APBDMA_CHAN_APBSEQ, ch_reg->apb_seq);
|
||||
tdc_write(tdc, TEGRA_APBDMA_CHAN_APBPTR, ch_reg->apb_ptr);
|
||||
tdc_write(tdc, TEGRA_APBDMA_CHAN_AHBSEQ, ch_reg->ahb_seq);
|
||||
|
|
@ -1592,16 +1601,14 @@ static int tegra_dma_pm_resume(struct device *dev)
|
|||
}
|
||||
|
||||
/* Disable clock */
|
||||
tegra_dma_runtime_suspend(dev);
|
||||
pm_runtime_put(dev);
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
|
||||
static const struct dev_pm_ops tegra_dma_dev_pm_ops = {
|
||||
#ifdef CONFIG_PM
|
||||
.runtime_suspend = tegra_dma_runtime_suspend,
|
||||
.runtime_resume = tegra_dma_runtime_resume,
|
||||
#endif
|
||||
SET_RUNTIME_PM_OPS(tegra_dma_runtime_suspend, tegra_dma_runtime_resume,
|
||||
NULL)
|
||||
SET_SYSTEM_SLEEP_PM_OPS(tegra_dma_pm_suspend, tegra_dma_pm_resume)
|
||||
};
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue