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authorNishanth Menon <nm@ti.com>2011-05-25 16:38:46 -0700
committerKevin Hilman <khilman@ti.com>2011-11-08 11:42:16 -0800
commit08ca3e3b8ddf0e75f734d46b31518b97256d2c17 (patch)
tree0ac1c4897e31580bc11c90d059ce516c30f644e4 /drivers/cpufreq/omap-cpufreq.c
parent022ac03b45d6899219539894cff3c7ce5bd990f9 (diff)
downloadlinux-08ca3e3b8ddf0e75f734d46b31518b97256d2c17.tar.bz2
cpufreq: OMAP: move clk name decision to init
Clk name does'nt need to dynamically detected during clk init. move them off to driver initialization, if we dont have a clk name, there is no point in registering the driver anyways. The actual clk get and put is left at cpu_init and exit functions. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'drivers/cpufreq/omap-cpufreq.c')
-rw-r--r--drivers/cpufreq/omap-cpufreq.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c
index 0a5d95c4f8eb..3651825e7fb9 100644
--- a/drivers/cpufreq/omap-cpufreq.c
+++ b/drivers/cpufreq/omap-cpufreq.c
@@ -49,6 +49,7 @@ static struct lpj_info global_lpj_ref;
static struct cpufreq_frequency_table *freq_table;
static struct clk *mpu_clk;
+static char *mpu_clk_name;
static int omap_verify_speed(struct cpufreq_policy *policy)
{
@@ -153,13 +154,7 @@ static int __cpuinit omap_cpu_init(struct cpufreq_policy *policy)
int result = 0;
struct device *mpu_dev;
- if (cpu_is_omap24xx())
- mpu_clk = clk_get(NULL, "virt_prcm_set");
- else if (cpu_is_omap34xx())
- mpu_clk = clk_get(NULL, "dpll1_ck");
- else if (cpu_is_omap44xx())
- mpu_clk = clk_get(NULL, "dpll_mpu_ck");
-
+ mpu_clk = clk_get(NULL, mpu_clk_name);
if (IS_ERR(mpu_clk))
return PTR_ERR(mpu_clk);
@@ -233,6 +228,17 @@ static struct cpufreq_driver omap_driver = {
static int __init omap_cpufreq_init(void)
{
+ if (cpu_is_omap24xx())
+ mpu_clk_name = "virt_prcm_set";
+ else if (cpu_is_omap34xx())
+ mpu_clk_name = "dpll1_ck";
+ else if (cpu_is_omap44xx())
+ mpu_clk_name = "dpll_mpu_ck";
+
+ if (!mpu_clk_name) {
+ pr_err("%s: unsupported Silicon?\n", __func__);
+ return -EINVAL;
+ }
return cpufreq_register_driver(&omap_driver);
}