Commit ef34add8 authored by Mika Westerberg's avatar Mika Westerberg
Browse files

thunderbolt: Check valid TMU configuration in tb_switch_tmu_configure() 



Instead of at enable time we can do this already in
tb_switch_tmu_configure().

Signed-off-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
parent 4e7b4955

drivers/thunderbolt/tb.c

+4 −2
Original line number Diff line number Diff line
@@ -282,9 +282,11 @@ static int tb_enable_tmu(struct tb_switch *sw) 
	 * highest accuracy.

	 */

	if (tb_switch_is_clx_enabled(sw, TB_CL1))

		tb_switch_tmu_configure(sw, TB_SWITCH_TMU_RATE_NORMAL, true);

		ret = tb_switch_tmu_configure(sw, TB_SWITCH_TMU_RATE_NORMAL, true);

	else

		tb_switch_tmu_configure(sw, TB_SWITCH_TMU_RATE_HIFI, false);

		ret = tb_switch_tmu_configure(sw, TB_SWITCH_TMU_RATE_HIFI, false);

	if (ret)

		return ret;



	/* If it is already enabled in correct mode, don't touch it */

	if (tb_switch_tmu_is_enabled(sw))

drivers/thunderbolt/tb.h

+2 −3
Original line number Diff line number Diff line
@@ -987,8 +987,7 @@ int tb_switch_tmu_init(struct tb_switch *sw); 
int tb_switch_tmu_post_time(struct tb_switch *sw);

int tb_switch_tmu_disable(struct tb_switch *sw);

int tb_switch_tmu_enable(struct tb_switch *sw);

void tb_switch_tmu_configure(struct tb_switch *sw,

			     enum tb_switch_tmu_rate rate,

int tb_switch_tmu_configure(struct tb_switch *sw, enum tb_switch_tmu_rate rate,

			    bool unidirectional);

/**

 * tb_switch_tmu_is_enabled() - Checks if the specified TMU mode is enabled

drivers/thunderbolt/tmu.c

+8 −5
Original line number Diff line number Diff line
@@ -648,9 +648,6 @@ int tb_switch_tmu_enable(struct tb_switch *sw) 
	bool unidirectional = sw->tmu.unidirectional_request;

	int ret;



	if (unidirectional && !sw->tmu.has_ucap)

		return -EOPNOTSUPP;



	/*

	 * No need to enable TMU on devices that don't support CLx since on

	 * these devices e.g. Alpine Ridge and earlier, the TMU mode HiFi
@@ -724,10 +721,16 @@ int tb_switch_tmu_enable(struct tb_switch *sw) 
 *

 * Selects the rate of the TMU and directionality (uni-directional or

 * bi-directional). Must be called before tb_switch_tmu_enable().

 *

 * Returns %0 in success and negative errno otherwise.

 */

void tb_switch_tmu_configure(struct tb_switch *sw,

			     enum tb_switch_tmu_rate rate, bool unidirectional)

int tb_switch_tmu_configure(struct tb_switch *sw, enum tb_switch_tmu_rate rate,

			    bool unidirectional)

{

	if (unidirectional && !sw->tmu.has_ucap)

		return -EINVAL;



	sw->tmu.unidirectional_request = unidirectional;

	sw->tmu.rate_request = rate;

	return 0;

}