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soc/tegra: pmc: Use existing pclk reference 

The driver requests the pclk clock at probe time already and stores its
reference to it in struct tegra_pmc, so there is no need to look it up
everytime it is needed. Use the existing reference instead.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2015-08-04 15:25:03 +02:00
parent 4a4466a6a4
commit 592431b036
1 changed files with 7 additions and 9 deletions
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16
drivers/soc/tegra/pmc.c
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@ -459,7 +459,6 @@ static int tegra_io_rail_prepare(int id, unsigned long *request,
unsigned long *status, unsigned int *bit)
{
unsigned long rate, value;
struct clk *clk;
*bit = id % 32;
@ -478,12 +477,7 @@ static int tegra_io_rail_prepare(int id, unsigned long *request,
*request = IO_DPD2_REQ;
}
clk = clk_get_sys(NULL, "pclk");
if (IS_ERR(clk))
return PTR_ERR(clk);
rate = clk_get_rate(clk);
clk_put(clk);
rate = clk_get_rate(pmc->clk);
tegra_pmc_writel(DPD_SAMPLE_ENABLE, DPD_SAMPLE);
@ -537,8 +531,10 @@ int tegra_io_rail_power_on(int id)
tegra_pmc_writel(value, request);
err = tegra_io_rail_poll(status, mask, 0, 250);
if (err < 0)
if (err < 0) {
pr_info("tegra_io_rail_poll() failed: %d\n", err);
return err;
}
tegra_io_rail_unprepare();
@ -553,8 +549,10 @@ int tegra_io_rail_power_off(int id)
int err;
err = tegra_io_rail_prepare(id, &request, &status, &bit);
if (err < 0)
if (err < 0) {
pr_info("tegra_io_rail_prepare() failed: %d\n", err);
return err;
}
mask = 1 << bit;