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Commit fb7c2a71 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nouveau/disp/dp: support aux read interval during link training 



Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent 7dc351b3

drivers/gpu/drm/nouveau/core/engine/disp/dport.c

+5 −2
Original line number Diff line number Diff line
@@ -48,7 +48,7 @@ struct dp_state { 
	u8 version;

	struct nouveau_i2c_port *aux;

	int head;

	u8  dpcd[4];

	u8  dpcd[16];

	int link_nr;

	u32 link_bw;

	u8  stat[6];
@@ -149,6 +149,9 @@ dp_link_train_update(struct dp_state *dp, u32 delay) 
{

	int ret;



	if (dp->dpcd[DPCD_RC0E_AUX_RD_INTERVAL])

		mdelay(dp->dpcd[DPCD_RC0E_AUX_RD_INTERVAL] * 4);

	else

		udelay(delay);



	ret = nv_rdaux(dp->aux, DPCD_LS02, dp->stat, 6);

drivers/gpu/drm/nouveau/core/engine/disp/dport.h

+3 −4
Original line number Diff line number Diff line
@@ -2,15 +2,14 @@ 
#define __NVKM_DISP_DPORT_H__



/* DPCD Receiver Capabilities */

#define DPCD_RC00                                                       0x00000

#define DPCD_RC00_DPCD_REV                                                 0xff

#define DPCD_RC01                                                       0x00001

#define DPCD_RC01_MAX_LINK_RATE                                            0xff

#define DPCD_RC00_DPCD_REV                                              0x00000

#define DPCD_RC01_MAX_LINK_RATE                                         0x00001

#define DPCD_RC02                                                       0x00002

#define DPCD_RC02_ENHANCED_FRAME_CAP                                       0x80

#define DPCD_RC02_MAX_LANE_COUNT                                           0x1f

#define DPCD_RC03                                                       0x00003

#define DPCD_RC03_MAX_DOWNSPREAD                                           0x01

#define DPCD_RC0E_AUX_RD_INTERVAL                                       0x0000e



/* DPCD Link Configuration */

#define DPCD_LC00                                                       0x00100