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drm/amdgpu/display: use msleep rather than udelay for HDCP

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ARM has a 2000us limit for udelay.  Switch to msleep.  This code
executes in a worker thread so shouldn't be an atomic context.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191217204707.2258744-2-alexander.deucher@amd.com
This commit is contained in:
Alex Deucher 2019-12-17 15:47:07 -05:00 committed by Dave Airlie
parent 4e328922d4
commit 5f773e551a
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/amd/display/modules/hdcp/hdcp2_execution.c
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@ -153,7 +153,7 @@ static enum mod_hdcp_status poll_l_prime_available(struct mod_hdcp *hdcp)
{
enum mod_hdcp_status status;
uint8_t size;
uint16_t max_wait = 20000; // units of us
uint16_t max_wait = 20; // units of ms
uint16_t num_polls = 5;
uint16_t wait_time = max_wait / num_polls;
@ -161,7 +161,7 @@ static enum mod_hdcp_status poll_l_prime_available(struct mod_hdcp *hdcp)
status = MOD_HDCP_STATUS_INVALID_OPERATION;
else
for (; num_polls; num_polls--) {
udelay(wait_time);
msleep(wait_time);
status = mod_hdcp_read_rxstatus(hdcp);
if (status != MOD_HDCP_STATUS_SUCCESS)
@ -474,7 +474,7 @@ static enum mod_hdcp_status locality_check(struct mod_hdcp *hdcp,
hdcp, "lc_init_write"))
goto out;
if (is_dp_hdcp(hdcp))
udelay(16000);
msleep(16);
else
if (!mod_hdcp_execute_and_set(poll_l_prime_available,
&input->l_prime_available_poll, &status,