forked from luck/tmp_suning_uos_patched
Merge branch 'amba' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm
* 'amba' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm: ARM: 7079/1: spi: Fix builderror in spi-pl022.c PM: add runtime PM support to MMCI PM: add runtime PM support to core Primecell driver
This commit is contained in:
Linus Torvalds
commit
7e0a6fd5a4
@ -365,6 +365,40 @@ static int amba_pm_restore_noirq(struct device *dev)
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#endif /* !CONFIG_HIBERNATE_CALLBACKS */
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#ifdef CONFIG_PM_RUNTIME
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/*
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* Hooks to provide runtime PM of the pclk (bus clock). It is safe to
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* enable/disable the bus clock at runtime PM suspend/resume as this
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* does not result in loss of context. However, disabling vcore power
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* would do, so we leave that to the driver.
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*/
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static int amba_pm_runtime_suspend(struct device *dev)
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{
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struct amba_device *pcdev = to_amba_device(dev);
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int ret = pm_generic_runtime_suspend(dev);
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if (ret == 0 && dev->driver)
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clk_disable(pcdev->pclk);
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return ret;
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}
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static int amba_pm_runtime_resume(struct device *dev)
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{
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struct amba_device *pcdev = to_amba_device(dev);
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int ret;
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if (dev->driver) {
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ret = clk_enable(pcdev->pclk);
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/* Failure is probably fatal to the system, but... */
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if (ret)
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return ret;
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}
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return pm_generic_runtime_resume(dev);
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}
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#endif
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#ifdef CONFIG_PM
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static const struct dev_pm_ops amba_pm = {
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@ -383,8 +417,8 @@ static const struct dev_pm_ops amba_pm = {
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.poweroff_noirq = amba_pm_poweroff_noirq,
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.restore_noirq = amba_pm_restore_noirq,
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SET_RUNTIME_PM_OPS(
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pm_generic_runtime_suspend,
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pm_generic_runtime_resume,
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amba_pm_runtime_suspend,
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amba_pm_runtime_resume,
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pm_generic_runtime_idle
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)
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};
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@ -494,10 +528,18 @@ static int amba_probe(struct device *dev)
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if (ret)
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break;
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pm_runtime_get_noresume(dev);
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pm_runtime_set_active(dev);
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pm_runtime_enable(dev);
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ret = pcdrv->probe(pcdev, id);
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if (ret == 0)
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break;
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pm_runtime_disable(dev);
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pm_runtime_set_suspended(dev);
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pm_runtime_put_noidle(dev);
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amba_put_disable_pclk(pcdev);
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amba_put_disable_vcore(pcdev);
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} while (0);
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@ -509,7 +551,16 @@ static int amba_remove(struct device *dev)
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{
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struct amba_device *pcdev = to_amba_device(dev);
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struct amba_driver *drv = to_amba_driver(dev->driver);
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int ret = drv->remove(pcdev);
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int ret;
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pm_runtime_get_sync(dev);
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ret = drv->remove(pcdev);
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pm_runtime_put_noidle(dev);
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/* Undo the runtime PM settings in amba_probe() */
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pm_runtime_disable(dev);
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pm_runtime_set_suspended(dev);
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pm_runtime_put_noidle(dev);
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amba_put_disable_pclk(pcdev);
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amba_put_disable_vcore(pcdev);
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@ -29,6 +29,7 @@
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#include <linux/dmaengine.h>
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#include <linux/dma-mapping.h>
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#include <linux/amba/mmci.h>
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#include <linux/pm_runtime.h>
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#include <asm/div64.h>
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#include <asm/io.h>
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@ -170,6 +171,7 @@ mmci_request_end(struct mmci_host *host, struct mmc_request *mrq)
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* back into the driver...
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*/
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spin_unlock(&host->lock);
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pm_runtime_put(mmc_dev(host->mmc));
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mmc_request_done(host->mmc, mrq);
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spin_lock(&host->lock);
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}
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@ -984,6 +986,8 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
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return;
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}
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pm_runtime_get_sync(mmc_dev(mmc));
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spin_lock_irqsave(&host->lock, flags);
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host->mrq = mrq;
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@ -1327,6 +1331,8 @@ static int __devinit mmci_probe(struct amba_device *dev,
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mmci_dma_setup(host);
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pm_runtime_put(&dev->dev);
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mmc_add_host(mmc);
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return 0;
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@ -1364,6 +1370,12 @@ static int __devexit mmci_remove(struct amba_device *dev)
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if (mmc) {
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struct mmci_host *host = mmc_priv(mmc);
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/*
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* Undo pm_runtime_put() in probe. We use the _sync
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* version here so that we can access the primecell.
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*/
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pm_runtime_get_sync(&dev->dev);
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mmc_remove_host(mmc);
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writel(0, host->base + MMCIMASK0);
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@ -515,9 +515,6 @@ static void giveback(struct pl022 *pl022)
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if (msg->complete)
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msg->complete(msg->context);
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/* This message is completed, so let's turn off the clocks & power */
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clk_disable(pl022->clk);
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amba_pclk_disable(pl022->adev);
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amba_vcore_disable(pl022->adev);
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pm_runtime_put(&pl022->adev->dev);
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}
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@ -1545,9 +1542,6 @@ static void pump_messages(struct work_struct *work)
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* (poll/interrupt/DMA)
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*/
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pm_runtime_get_sync(&pl022->adev->dev);
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amba_vcore_enable(pl022->adev);
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amba_pclk_enable(pl022->adev);
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clk_enable(pl022->clk);
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restore_state(pl022);
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flush(pl022);
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@ -2186,8 +2180,6 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id)
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}
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printk(KERN_INFO "pl022: mapped registers from 0x%08x to %p\n",
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adev->res.start, pl022->virtbase);
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pm_runtime_enable(dev);
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pm_runtime_resume(dev);
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pl022->clk = clk_get(&adev->dev, NULL);
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if (IS_ERR(pl022->clk)) {
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@ -2195,7 +2187,6 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id)
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dev_err(&adev->dev, "could not retrieve SSP/SPI bus clock\n");
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goto err_no_clk;
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}
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/* Disable SSP */
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writew((readw(SSP_CR1(pl022->virtbase)) & (~SSP_CR1_MASK_SSE)),
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SSP_CR1(pl022->virtbase));
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@ -2235,12 +2226,9 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id)
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goto err_spi_register;
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}
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dev_dbg(dev, "probe succeeded\n");
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/*
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* Disable the silicon block pclk and any voltage domain and just
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* power it up and clock it when it's needed
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*/
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amba_pclk_disable(adev);
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amba_vcore_disable(adev);
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/* let runtime pm put suspend */
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pm_runtime_put(dev);
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return 0;
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err_spi_register:
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@ -2249,7 +2237,6 @@ pl022_probe(struct amba_device *adev, const struct amba_id *id)
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destroy_queue(pl022);
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pl022_dma_remove(pl022);
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free_irq(adev->irq[0], pl022);
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pm_runtime_disable(&adev->dev);
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err_no_irq:
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clk_put(pl022->clk);
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err_no_clk:
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@ -2271,6 +2258,12 @@ pl022_remove(struct amba_device *adev)
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if (!pl022)
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return 0;
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/*
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* undo pm_runtime_put() in probe. I assume that we're not
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* accessing the primecell here.
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*/
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pm_runtime_get_noresume(&adev->dev);
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/* Remove the queue */
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if (destroy_queue(pl022) != 0)
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dev_err(&adev->dev, "queue remove failed\n");
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@ -2288,46 +2281,70 @@ pl022_remove(struct amba_device *adev)
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return 0;
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}
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#ifdef CONFIG_PM
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static int pl022_suspend(struct amba_device *adev, pm_message_t state)
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#ifdef CONFIG_SUSPEND
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static int pl022_suspend(struct device *dev)
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{
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struct pl022 *pl022 = amba_get_drvdata(adev);
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struct pl022 *pl022 = dev_get_drvdata(dev);
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int status = 0;
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status = stop_queue(pl022);
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if (status) {
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dev_warn(&adev->dev, "suspend cannot stop queue\n");
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dev_warn(dev, "suspend cannot stop queue\n");
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return status;
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}
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amba_vcore_enable(adev);
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amba_pclk_enable(adev);
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amba_vcore_enable(pl022->adev);
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amba_pclk_enable(pl022->adev);
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load_ssp_default_config(pl022);
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amba_pclk_disable(adev);
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amba_vcore_disable(adev);
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dev_dbg(&adev->dev, "suspended\n");
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amba_pclk_disable(pl022->adev);
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amba_vcore_disable(pl022->adev);
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dev_dbg(dev, "suspended\n");
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return 0;
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}
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static int pl022_resume(struct amba_device *adev)
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static int pl022_resume(struct device *dev)
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{
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struct pl022 *pl022 = amba_get_drvdata(adev);
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struct pl022 *pl022 = dev_get_drvdata(dev);
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int status = 0;
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/* Start the queue running */
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status = start_queue(pl022);
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if (status)
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dev_err(&adev->dev, "problem starting queue (%d)\n", status);
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dev_err(dev, "problem starting queue (%d)\n", status);
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else
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dev_dbg(&adev->dev, "resumed\n");
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dev_dbg(dev, "resumed\n");
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return status;
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}
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#else
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#define pl022_suspend NULL
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#define pl022_resume NULL
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#endif /* CONFIG_PM */
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#ifdef CONFIG_PM_RUNTIME
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static int pl022_runtime_suspend(struct device *dev)
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{
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struct pl022 *pl022 = dev_get_drvdata(dev);
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clk_disable(pl022->clk);
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amba_vcore_disable(pl022->adev);
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return 0;
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}
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static int pl022_runtime_resume(struct device *dev)
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{
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struct pl022 *pl022 = dev_get_drvdata(dev);
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amba_vcore_enable(pl022->adev);
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clk_enable(pl022->clk);
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return 0;
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}
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#endif
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static const struct dev_pm_ops pl022_dev_pm_ops = {
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SET_SYSTEM_SLEEP_PM_OPS(pl022_suspend, pl022_resume)
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SET_RUNTIME_PM_OPS(pl022_runtime_suspend, pl022_runtime_resume, NULL)
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};
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static struct vendor_data vendor_arm = {
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.fifodepth = 8,
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.max_bpw = 16,
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@ -2407,12 +2424,11 @@ static struct amba_id pl022_ids[] = {
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static struct amba_driver pl022_driver = {
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.drv = {
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.name = "ssp-pl022",
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.pm = &pl022_dev_pm_ops,
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},
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.id_table = pl022_ids,
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.probe = pl022_probe,
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.remove = __devexit_p(pl022_remove),
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.suspend = pl022_suspend,
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.resume = pl022_resume,
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};
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