github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-04 20:46:48 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/i915/dp: refactor aux_ch_name()

Browse Source 
Convert aux_ch_name() to a helper that prints a string to a caller
provided buffer, and use it to get more consistent aux channel
debugs. Now that all users of aux_ch_name() are in intel_dp_aux.c, we
can make it static too.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230922105645.3991066-1-jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2023-09-22 13:56:45 +03:00
parent 156adfa55f
commit 690391777f
2 changed files with 25 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/i915/display/intel_display.h
View File

@ -190,8 +190,6 @@ enum aux_ch {
AUX_CH_E_XELPD,
};
#define aux_ch_name(a) ((a) + 'A')
enum phy {
PHY_NONE = -1,

41
drivers/gpu/drm/i915/display/intel_dp_aux.c
View File

@ -14,6 +14,21 @@
#include "intel_pps.h"
#include "intel_tc.h"
#define AUX_CH_NAME_BUFSIZE 6
static const char *aux_ch_name(struct drm_i915_private *i915,
char *buf, int size, enum aux_ch aux_ch)
{
if (DISPLAY_VER(i915) >= 13 && aux_ch >= AUX_CH_D_XELPD)
snprintf(buf, size, "%c", 'A' + aux_ch - AUX_CH_D_XELPD + AUX_CH_D);
else if (DISPLAY_VER(i915) >= 12 && aux_ch >= AUX_CH_USBC1)
snprintf(buf, size, "USBC%c", '1' + aux_ch - AUX_CH_USBC1);
else
snprintf(buf, size, "%c", 'A' + aux_ch);
return buf;
}
u32 intel_dp_aux_pack(const u8 *src, int src_bytes)
{
int i;
@ -728,6 +743,7 @@ void intel_dp_aux_init(struct intel_dp *intel_dp)
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
struct intel_encoder *encoder = &dig_port->base;
enum aux_ch aux_ch = dig_port->aux_ch;
char buf[AUX_CH_NAME_BUFSIZE];
if (DISPLAY_VER(dev_priv) >= 14) {
intel_dp->aux_ch_ctl_reg = xelpdp_aux_ctl_reg;
@ -764,18 +780,9 @@ void intel_dp_aux_init(struct intel_dp *intel_dp)
drm_dp_aux_init(&intel_dp->aux);
/* Failure to allocate our preferred name is not critical */
if (DISPLAY_VER(dev_priv) >= 13 && aux_ch >= AUX_CH_D_XELPD)
intel_dp->aux.name = kasprintf(GFP_KERNEL, "AUX %c/%s",
aux_ch_name(aux_ch - AUX_CH_D_XELPD + AUX_CH_D),
encoder->base.name);
else if (DISPLAY_VER(dev_priv) >= 12 && aux_ch >= AUX_CH_USBC1)
intel_dp->aux.name = kasprintf(GFP_KERNEL, "AUX USBC%c/%s",
aux_ch - AUX_CH_USBC1 + '1',
encoder->base.name);
else
intel_dp->aux.name = kasprintf(GFP_KERNEL, "AUX %c/%s",
aux_ch_name(aux_ch),
encoder->base.name);
intel_dp->aux.name = kasprintf(GFP_KERNEL, "AUX %s/%s",
aux_ch_name(dev_priv, buf, sizeof(buf), aux_ch),
encoder->base.name);
intel_dp->aux.transfer = intel_dp_aux_transfer;
cpu_latency_qos_add_request(&intel_dp->pm_qos, PM_QOS_DEFAULT_VALUE);
@ -819,6 +826,7 @@ enum aux_ch intel_dp_aux_ch(struct intel_encoder *encoder)
struct intel_encoder *other;
const char *source;
enum aux_ch aux_ch;
char buf[AUX_CH_NAME_BUFSIZE];
aux_ch = intel_bios_dp_aux_ch(encoder->devdata);
source = "VBT";
@ -836,16 +844,17 @@ enum aux_ch intel_dp_aux_ch(struct intel_encoder *encoder)
other = get_encoder_by_aux_ch(encoder, aux_ch);
if (other) {
drm_dbg_kms(&i915->drm,
"[ENCODER:%d:%s] AUX CH %c already claimed by [ENCODER:%d:%s]\n",
encoder->base.base.id, encoder->base.name, aux_ch_name(aux_ch),
"[ENCODER:%d:%s] AUX CH %s already claimed by [ENCODER:%d:%s]\n",
encoder->base.base.id, encoder->base.name,
aux_ch_name(i915, buf, sizeof(buf), aux_ch),
other->base.base.id, other->base.name);
return AUX_CH_NONE;
}
drm_dbg_kms(&i915->drm,
"[ENCODER:%d:%s] Using AUX CH %c (%s)\n",
"[ENCODER:%d:%s] Using AUX CH %s (%s)\n",
encoder->base.base.id, encoder->base.name,
aux_ch_name(aux_ch), source);
aux_ch_name(i915, buf, sizeof(buf), aux_ch), source);
return aux_ch;
}