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Subject[PATCH v1 1/2] cpufreq: tegra20: Constify rate value of the intermediate clk
Date
PLL_P is known to be always running at 216MHz, hence there is no need to
query its rate.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/cpufreq/tegra20-cpufreq.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/cpufreq/tegra20-cpufreq.c b/drivers/cpufreq/tegra20-cpufreq.c
index 05f57dcd5215..3ad6bded6efc 100644
--- a/drivers/cpufreq/tegra20-cpufreq.c
+++ b/drivers/cpufreq/tegra20-cpufreq.c
@@ -24,6 +24,8 @@
#include <linux/platform_device.h>
#include <linux/types.h>

+#define PLL_P_FREQ 216000
+
static struct cpufreq_frequency_table freq_table[] = {
{ .frequency = 216000 },
{ .frequency = 312000 },
@@ -48,18 +50,15 @@ struct tegra20_cpufreq {
static unsigned int tegra_get_intermediate(struct cpufreq_policy *policy,
unsigned int index)
{
- struct tegra20_cpufreq *cpufreq = cpufreq_get_driver_data();
- unsigned int ifreq = clk_get_rate(cpufreq->pll_p_clk) / 1000;
-
/*
* Don't switch to intermediate freq if:
* - we are already at it, i.e. policy->cur == ifreq
* - index corresponds to ifreq
*/
- if (freq_table[index].frequency == ifreq || policy->cur == ifreq)
+ if (index == 0 || policy->cur == PLL_P_FREQ)
return 0;

- return ifreq;
+ return PLL_P_FREQ;
}

static int tegra_target_intermediate(struct cpufreq_policy *policy,
@@ -93,14 +92,13 @@ static int tegra_target(struct cpufreq_policy *policy, unsigned int index)
{
struct tegra20_cpufreq *cpufreq = cpufreq_get_driver_data();
unsigned long rate = freq_table[index].frequency;
- unsigned int ifreq = clk_get_rate(cpufreq->pll_p_clk) / 1000;
int ret;

/*
* target freq == pll_p, don't need to take extra reference to pll_x_clk
* as it isn't used anymore.
*/
- if (rate == ifreq)
+ if (index == 0)
return clk_set_parent(cpufreq->cpu_clk, cpufreq->pll_p_clk);

ret = clk_set_rate(cpufreq->pll_x_clk, rate * 1000);
--
2.17.0
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