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drm/radeon/dpm: add an enum for pcie gen selection 

This makes it easier the understand what the code is
doing.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2013-03-18 17:03:01 -04:00
parent f8f84ac5d4
commit 32ce4652dc
2 changed files with 20 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/gpu/drm/radeon/cypress_dpm.c
View File

@ -344,7 +344,7 @@ void cypress_advertise_gen2_capability(struct radeon_device *rdev)
}
static u32 cypress_get_maximum_link_speed(struct radeon_ps *radeon_state)
static enum radeon_pcie_gen cypress_get_maximum_link_speed(struct radeon_ps *radeon_state)
{
struct rv7xx_ps *state = rv770_get_ps(radeon_state);
@ -357,14 +357,16 @@ void cypress_notify_link_speed_change_after_state_change(struct radeon_device *r
struct radeon_ps *radeon_new_state,
struct radeon_ps *radeon_current_state)
{
u32 pcie_link_speed_target = cypress_get_maximum_link_speed(radeon_new_state);
u32 pcie_link_speed_current = cypress_get_maximum_link_speed(radeon_current_state);
enum radeon_pcie_gen pcie_link_speed_target =
cypress_get_maximum_link_speed(radeon_new_state);
enum radeon_pcie_gen pcie_link_speed_current =
cypress_get_maximum_link_speed(radeon_current_state);
u8 request;
if (pcie_link_speed_target < pcie_link_speed_current) {
if (pcie_link_speed_target == 0)
if (pcie_link_speed_target == RADEON_PCIE_GEN1)
request = PCIE_PERF_REQ_PECI_GEN1;
else if (pcie_link_speed_target == 1)
else if (pcie_link_speed_target == RADEON_PCIE_GEN2)
request = PCIE_PERF_REQ_PECI_GEN2;
else
request = PCIE_PERF_REQ_PECI_GEN3;
@ -377,14 +379,16 @@ void cypress_notify_link_speed_change_before_state_change(struct radeon_device *
struct radeon_ps *radeon_new_state,
struct radeon_ps *radeon_current_state)
{
u32 pcie_link_speed_target = cypress_get_maximum_link_speed(radeon_new_state);
u32 pcie_link_speed_current = cypress_get_maximum_link_speed(radeon_current_state);
enum radeon_pcie_gen pcie_link_speed_target =
cypress_get_maximum_link_speed(radeon_new_state);
enum radeon_pcie_gen pcie_link_speed_current =
cypress_get_maximum_link_speed(radeon_current_state);
u8 request;
if (pcie_link_speed_target > pcie_link_speed_current) {
if (pcie_link_speed_target == 0)
if (pcie_link_speed_target == RADEON_PCIE_GEN1)
request = PCIE_PERF_REQ_PECI_GEN1;
else if (pcie_link_speed_target == 1)
else if (pcie_link_speed_target == RADEON_PCIE_GEN2)
request = PCIE_PERF_REQ_PECI_GEN2;
else
request = PCIE_PERF_REQ_PECI_GEN3;

7
drivers/gpu/drm/radeon/radeon.h
View File

@ -1298,6 +1298,13 @@ struct radeon_dpm_fan {
bool ucode_fan_control;
};
enum radeon_pcie_gen {
RADEON_PCIE_GEN1 = 0,
RADEON_PCIE_GEN2 = 1,
RADEON_PCIE_GEN3 = 2,
RADEON_PCIE_GEN_INVALID = 0xffff
};
struct radeon_dpm {
struct radeon_ps *ps;
/* number of valid power states */