diff options
| -rw-r--r-- | drivers/mmc/core/core.c | 40 |
1 files changed, 33 insertions, 7 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 63f7bf87843f..c23f3c3ec864 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -616,17 +616,39 @@ static int mmc_devfreq_create_freq_table(struct mmc_host *host) host->card->clk_scaling_lowest, host->card->clk_scaling_highest); + /* + * Create the frequency table and initialize it with default values. + * Initialize it with platform specific frequencies if the frequency + * table supplied by platform driver is present, otherwise initialize + * it with min and max frequencies supported by the card. + */ if (!clk_scaling->freq_table) { - pr_debug("%s: no frequency table defined - setting default\n", - mmc_hostname(host)); + if (clk_scaling->pltfm_freq_table_sz) + clk_scaling->freq_table_sz = + clk_scaling->pltfm_freq_table_sz; + else + clk_scaling->freq_table_sz = 2; + clk_scaling->freq_table = kzalloc( - 2*sizeof(*(clk_scaling->freq_table)), GFP_KERNEL); + (clk_scaling->freq_table_sz * + sizeof(*(clk_scaling->freq_table))), GFP_KERNEL); if (!clk_scaling->freq_table) return -ENOMEM; - clk_scaling->freq_table[0] = host->card->clk_scaling_lowest; - clk_scaling->freq_table[1] = host->card->clk_scaling_highest; - clk_scaling->freq_table_sz = 2; - goto out; + + if (clk_scaling->pltfm_freq_table) { + memcpy(clk_scaling->freq_table, + clk_scaling->pltfm_freq_table, + (clk_scaling->pltfm_freq_table_sz * + sizeof(*(clk_scaling->pltfm_freq_table)))); + } else { + pr_debug("%s: no frequency table defined - setting default\n", + mmc_hostname(host)); + clk_scaling->freq_table[0] = + host->card->clk_scaling_lowest; + clk_scaling->freq_table[1] = + host->card->clk_scaling_highest; + goto out; + } } if (host->card->clk_scaling_lowest > @@ -895,6 +917,10 @@ int mmc_exit_clk_scaling(struct mmc_host *host) host->clk_scaling.devfreq = NULL; atomic_set(&host->clk_scaling.devfreq_abort, 1); + + kfree(host->clk_scaling.freq_table); + host->clk_scaling.freq_table = NULL; + pr_debug("%s: devfreq was removed\n", mmc_hostname(host)); return 0; |