evie/android_kernel_oneplus_msm8998
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Merge "scsi: ufs-qcom: configure ufs clocks core memory"

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Linux Build Service Account 2016-09-13 05:43:52 -07:00 • committed by Gerrit - the friendly Code Review server
commit d58d587e95
1 changed files with 23 additions and 0 deletions
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23
drivers/scsi/ufs/ufs-qcom.c
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@ -349,6 +349,28 @@ out:
return err;
}
static void ufs_qcom_force_mem_config(struct ufs_hba *hba)
{
struct ufs_clk_info *clki;
/*
* Configure the behavior of ufs clocks core and peripheral
* memory state when they are turned off.
* This configuration is required to allow retaining
* ICE crypto configuration (including keys) when
* core_clk_ice is turned off, and powering down
* non-ICE RAMs of host controller.
*/
list_for_each_entry(clki, &hba->clk_list_head, list) {
if (!strcmp(clki->name, "core_clk_ice"))
clk_set_flags(clki->clk, CLKFLAG_RETAIN_MEM);
else
clk_set_flags(clki->clk, CLKFLAG_NORETAIN_MEM);
clk_set_flags(clki->clk, CLKFLAG_NORETAIN_PERIPH);
clk_set_flags(clki->clk, CLKFLAG_PERIPH_OFF_CLEAR);
}
}
static int ufs_qcom_hce_enable_notify(struct ufs_hba *hba,
enum ufs_notify_change_status status)
{
@ -357,6 +379,7 @@ static int ufs_qcom_hce_enable_notify(struct ufs_hba *hba,
switch (status) {
case PRE_CHANGE:
ufs_qcom_force_mem_config(hba);
ufs_qcom_power_up_sequence(hba);
/*
* The PHY PLL output is the source of tx/rx lane symbol