evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

mmc: msm_sdcc: Featurize busclock power save and disable it by default

Browse source 
Signed-off-by: San Mehat <san@google.com>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
This commit is contained in:
San Mehat 2009-11-23 15:36:31 -08:00 • committed by Daniel Walker
parent c7fc9370df
commit f4748499d3
1 changed files with 13 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
drivers/mmc/host/msm_sdcc.c
View file

@ -48,6 +48,7 @@
#define DRIVER_NAME "msm-sdcc" #define DRIVER_NAME "msm-sdcc"
#define BUSCLK_PWRSAVE 0
#define BUSCLK_TIMEOUT (HZ) #define BUSCLK_TIMEOUT (HZ)
static unsigned int msmsdcc_fmin = 144000; static unsigned int msmsdcc_fmin = 144000;
static unsigned int msmsdcc_fmax = 50000000; static unsigned int msmsdcc_fmax = 50000000;
@ -65,6 +66,8 @@ msmsdcc_disable_clocks(struct msmsdcc_host *host, int deferr)
{ {
WARN_ON(!host->clks_on); WARN_ON(!host->clks_on);
BUG_ON(host->curr.mrq);
if (deferr) { if (deferr) {
mod_timer(&host->busclk_timer, jiffies + BUSCLK_TIMEOUT); mod_timer(&host->busclk_timer, jiffies + BUSCLK_TIMEOUT);
} else { } else {
@ -131,7 +134,9 @@ msmsdcc_request_end(struct msmsdcc_host *host, struct mmc_request *mrq)
if (mrq->cmd->error == -ETIMEDOUT) if (mrq->cmd->error == -ETIMEDOUT)
mdelay(5); mdelay(5);
#if BUSCLK_PWRSAVE
msmsdcc_disable_clocks(host, 1); msmsdcc_disable_clocks(host, 1);
#endif
/* /*
* Need to drop the host lock here; mmc_request_done may call * Need to drop the host lock here; mmc_request_done may call
* back into the driver... * back into the driver...
@ -257,7 +262,9 @@ msmsdcc_dma_complete_func(struct msm_dmov_cmd *cmd,
mrq->data->bytes_xfered = host->curr.data_xfered; mrq->data->bytes_xfered = host->curr.data_xfered;
spin_unlock_irqrestore(&host->lock, flags); spin_unlock_irqrestore(&host->lock, flags);
#if BUSCLK_PWRSAVE
msmsdcc_disable_clocks(host, 1); msmsdcc_disable_clocks(host, 1);
#endif
mmc_request_done(host->mmc, mrq); mmc_request_done(host->mmc, mrq);
return; return;
} else } else
@ -934,7 +941,9 @@ msmsdcc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
host->pwr = pwr; host->pwr = pwr;
msmsdcc_writel(host, pwr, MMCIPOWER); msmsdcc_writel(host, pwr, MMCIPOWER);
} }
#if BUSCLK_PWRSAVE
msmsdcc_disable_clocks(host, 1); msmsdcc_disable_clocks(host, 1);
#endif
spin_unlock_irqrestore(&host->lock, flags); spin_unlock_irqrestore(&host->lock, flags);
} }
@ -1279,7 +1288,9 @@ msmsdcc_probe(struct platform_device *pdev)
if (host->timer.function) if (host->timer.function)
pr_info("%s: Polling status mode enabled\n", mmc_hostname(mmc)); pr_info("%s: Polling status mode enabled\n", mmc_hostname(mmc));
#if BUSCLK_PWRSAVE
msmsdcc_disable_clocks(host, 1); msmsdcc_disable_clocks(host, 1);
#endif
return 0; return 0;
cmd_irq_free: cmd_irq_free:
free_irq(cmd_irqres->start, host); free_irq(cmd_irqres->start, host);
@ -1341,7 +1352,9 @@ msmsdcc_resume(struct platform_device *dev)
mmc_resume_host(mmc); mmc_resume_host(mmc);
if (host->stat_irq) if (host->stat_irq)
enable_irq(host->stat_irq); enable_irq(host->stat_irq);
#if BUSCLK_PWRSAVE
msmsdcc_disable_clocks(host, 1); msmsdcc_disable_clocks(host, 1);
#endif
} }
return 0; return 0;
} }