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mmc: dw_mmc: remove system PM callback 

Now there are no variant drivers using dw_mci_suspend
and dw_mci_resume, so let's remove it.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Shawn Lin 2016-10-12 10:56:55 +08:00 committed by Ulf Hansson
parent ee2112be41
commit ed24e1ff5a
2 changed files with 27 additions and 56 deletions
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81
drivers/mmc/host/dw_mmc.c
View File

@ -3268,27 +3268,41 @@ EXPORT_SYMBOL(dw_mci_remove);
#ifdef CONFIG_PM #ifdef CONFIG_PM
/* int dw_mci_runtime_suspend(struct device *dev)
* TODO: we should probably disable the clock to the card in the suspend path.
*/
int dw_mci_suspend(struct dw_mci *host)
{ {
struct dw_mci *host = dev_get_drvdata(dev);
if (host->use_dma && host->dma_ops->exit) if (host->use_dma && host->dma_ops->exit)
host->dma_ops->exit(host); host->dma_ops->exit(host);
clk_disable_unprepare(host->ciu_clk);
if (host->cur_slot &&
(mmc_can_gpio_cd(host->cur_slot->mmc) ||
!mmc_card_is_removable(host->cur_slot->mmc)))
clk_disable_unprepare(host->biu_clk);
return 0; return 0;
} }
EXPORT_SYMBOL(dw_mci_suspend); EXPORT_SYMBOL(dw_mci_runtime_suspend);
int dw_mci_resume(struct dw_mci *host) int dw_mci_runtime_resume(struct device *dev)
{ {
int i, ret; int i, ret = 0;
struct dw_mci *host = dev_get_drvdata(dev);
if (!dw_mci_ctrl_reset(host, SDMMC_CTRL_ALL_RESET_FLAGS)) { if (host->cur_slot &&
ret = -ENODEV; (mmc_can_gpio_cd(host->cur_slot->mmc) ||
return ret; !mmc_card_is_removable(host->cur_slot->mmc))) {
ret = clk_prepare_enable(host->biu_clk);
if (ret)
return ret;
} }
ret = clk_prepare_enable(host->ciu_clk);
if (ret)
return ret;
if (host->use_dma && host->dma_ops->init) if (host->use_dma && host->dma_ops->init)
host->dma_ops->init(host); host->dma_ops->init(host);
@ -3296,8 +3310,8 @@ int dw_mci_resume(struct dw_mci *host)
* Restore the initial value at FIFOTH register * Restore the initial value at FIFOTH register
* And Invalidate the prev_blksz with zero * And Invalidate the prev_blksz with zero
*/ */
mci_writel(host, FIFOTH, host->fifoth_val); mci_writel(host, FIFOTH, host->fifoth_val);
host->prev_blksz = 0; host->prev_blksz = 0;
/* Put in max timeout */ /* Put in max timeout */
mci_writel(host, TMOUT, 0xFFFFFFFF); mci_writel(host, TMOUT, 0xFFFFFFFF);
@ -3322,48 +3336,7 @@ int dw_mci_resume(struct dw_mci *host)
/* Now that slots are all setup, we can enable card detect */ /* Now that slots are all setup, we can enable card detect */
dw_mci_enable_cd(host); dw_mci_enable_cd(host);
return 0; return ret;
}
EXPORT_SYMBOL(dw_mci_resume);
int dw_mci_runtime_suspend(struct device *dev)
{
int err = 0;
struct dw_mci *host = dev_get_drvdata(dev);
err = dw_mci_suspend(host);
if (err)
return err;
clk_disable_unprepare(host->ciu_clk);
if (host->cur_slot &&
(mmc_can_gpio_cd(host->cur_slot->mmc) ||
!mmc_card_is_removable(host->cur_slot->mmc)))
clk_disable_unprepare(host->biu_clk);
return err;
}
EXPORT_SYMBOL(dw_mci_runtime_suspend);
int dw_mci_runtime_resume(struct device *dev)
{
int ret = 0;
struct dw_mci *host = dev_get_drvdata(dev);
if (host->cur_slot &&
(mmc_can_gpio_cd(host->cur_slot->mmc) ||
!mmc_card_is_removable(host->cur_slot->mmc))) {
ret = clk_prepare_enable(host->biu_clk);
if (ret)
return ret;
}
ret = clk_prepare_enable(host->ciu_clk);
if (ret)
return ret;
return dw_mci_resume(host);
} }
EXPORT_SYMBOL(dw_mci_runtime_resume); EXPORT_SYMBOL(dw_mci_runtime_resume);
#endif /* CONFIG_PM */ #endif /* CONFIG_PM */

2
drivers/mmc/host/dw_mmc.h
View File

@ -235,8 +235,6 @@
extern int dw_mci_probe(struct dw_mci *host); extern int dw_mci_probe(struct dw_mci *host);
extern void dw_mci_remove(struct dw_mci *host); extern void dw_mci_remove(struct dw_mci *host);
#ifdef CONFIG_PM #ifdef CONFIG_PM
extern int dw_mci_suspend(struct dw_mci *host);
extern int dw_mci_resume(struct dw_mci *host);
extern int dw_mci_runtime_suspend(struct device *device); extern int dw_mci_runtime_suspend(struct device *device);
extern int dw_mci_runtime_resume(struct device *device); extern int dw_mci_runtime_resume(struct device *device);
#endif #endif