From 013ea98cdfccef3b7c38b087c1f629488d2ef683 Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Date: Wed, 6 Sep 2023 09:50:54 +0300
Subject: [PATCH] drm/bridge: tc358768: Print logical values, not raw register values
Git-commit: 013ea98cdfccef3b7c38b087c1f629488d2ef683
Patch-mainline: v6.7-rc1
References: git-fixes
The driver debug prints DSI related timings as raw register values in
hex. It is much more useful to see the "logical" value of the timing,
not the register value.
Change the prints to print the values separately, in case a single
register contains multiple values, and use %u to have it in a more human
consumable form.
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Tested-by: Maxim Schwalm <maxim.schwalm@gmail.com> # Asus TF700T
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230906-tc358768-v4-7-31725f008a50@ideasonboard.com
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/bridge/tc358768.c | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/bridge/tc358768.c b/drivers/gpu/drm/bridge/tc358768.c
index b98c517c4726..88060f961064 100644
--- a/drivers/gpu/drm/bridge/tc358768.c
+++ b/drivers/gpu/drm/bridge/tc358768.c
@@ -739,57 +739,59 @@ static void tc358768_bridge_pre_enable(struct drm_bridge *bridge)
/* LP11 > 100us for D-PHY Rx Init */
val = tc358768_ns_to_cnt(100 * 1000, dsibclk_nsk) - 1;
- dev_dbg(priv->dev, "LINEINITCNT: 0x%x\n", val);
+ dev_dbg(priv->dev, "LINEINITCNT: %u\n", val);
tc358768_write(priv, TC358768_LINEINITCNT, val);
/* LPTimeCnt > 50ns */
val = tc358768_ns_to_cnt(50, dsibclk_nsk) - 1;
lptxcnt = val;
- dev_dbg(priv->dev, "LPTXTIMECNT: 0x%x\n", val);
+ dev_dbg(priv->dev, "LPTXTIMECNT: %u\n", val);
tc358768_write(priv, TC358768_LPTXTIMECNT, val);
/* 38ns < TCLK_PREPARE < 95ns */
val = tc358768_ns_to_cnt(65, dsibclk_nsk) - 1;
+ dev_dbg(priv->dev, "TCLK_PREPARECNT %u\n", val);
/* TCLK_PREPARE + TCLK_ZERO > 300ns */
val2 = tc358768_ns_to_cnt(300 - tc358768_to_ns(2 * ui_nsk),
dsibclk_nsk) - 2;
+ dev_dbg(priv->dev, "TCLK_ZEROCNT %u\n", val2);
val |= val2 << 8;
- dev_dbg(priv->dev, "TCLK_HEADERCNT: 0x%x\n", val);
tc358768_write(priv, TC358768_TCLK_HEADERCNT, val);
/* TCLK_TRAIL > 60ns AND TEOT <= 105 ns + 12*UI */
raw_val = tc358768_ns_to_cnt(60 + tc358768_to_ns(2 * ui_nsk), dsibclk_nsk) - 5;
val = clamp(raw_val, 0, 127);
- dev_dbg(priv->dev, "TCLK_TRAILCNT: 0x%x\n", val);
+ dev_dbg(priv->dev, "TCLK_TRAILCNT: %u\n", val);
tc358768_write(priv, TC358768_TCLK_TRAILCNT, val);
/* 40ns + 4*UI < THS_PREPARE < 85ns + 6*UI */
val = 50 + tc358768_to_ns(4 * ui_nsk);
val = tc358768_ns_to_cnt(val, dsibclk_nsk) - 1;
+ dev_dbg(priv->dev, "THS_PREPARECNT %u\n", val);
/* THS_PREPARE + THS_ZERO > 145ns + 10*UI */
raw_val = tc358768_ns_to_cnt(145 - tc358768_to_ns(3 * ui_nsk), dsibclk_nsk) - 10;
val2 = clamp(raw_val, 0, 127);
+ dev_dbg(priv->dev, "THS_ZEROCNT %u\n", val2);
val |= val2 << 8;
- dev_dbg(priv->dev, "THS_HEADERCNT: 0x%x\n", val);
tc358768_write(priv, TC358768_THS_HEADERCNT, val);
/* TWAKEUP > 1ms in lptxcnt steps */
val = tc358768_ns_to_cnt(1020000, dsibclk_nsk);
val = val / (lptxcnt + 1) - 1;
- dev_dbg(priv->dev, "TWAKEUP: 0x%x\n", val);
+ dev_dbg(priv->dev, "TWAKEUP: %u\n", val);
tc358768_write(priv, TC358768_TWAKEUP, val);
/* TCLK_POSTCNT > 60ns + 52*UI */
val = tc358768_ns_to_cnt(60 + tc358768_to_ns(52 * ui_nsk),
dsibclk_nsk) - 3;
- dev_dbg(priv->dev, "TCLK_POSTCNT: 0x%x\n", val);
+ dev_dbg(priv->dev, "TCLK_POSTCNT: %u\n", val);
tc358768_write(priv, TC358768_TCLK_POSTCNT, val);
/* max(60ns + 4*UI, 8*UI) < THS_TRAILCNT < 105ns + 12*UI */
raw_val = tc358768_ns_to_cnt(60 + tc358768_to_ns(18 * ui_nsk),
dsibclk_nsk) - 4;
val = clamp(raw_val, 0, 15);
- dev_dbg(priv->dev, "THS_TRAILCNT: 0x%x\n", val);
+ dev_dbg(priv->dev, "THS_TRAILCNT: %u\n", val);
tc358768_write(priv, TC358768_THS_TRAILCNT, val);
val = BIT(0);
@@ -803,10 +805,11 @@ static void tc358768_bridge_pre_enable(struct drm_bridge *bridge)
/* TXTAGOCNT[26:16] RXTASURECNT[10:0] */
val = tc358768_to_ns((lptxcnt + 1) * dsibclk_nsk * 4);
val = tc358768_ns_to_cnt(val, dsibclk_nsk) / 4 - 1;
+ dev_dbg(priv->dev, "TXTAGOCNT: %u\n", val);
val2 = tc358768_ns_to_cnt(tc358768_to_ns((lptxcnt + 1) * dsibclk_nsk),
dsibclk_nsk) - 2;
+ dev_dbg(priv->dev, "RXTASURECNT: %u\n", val2);
val = val << 16 | val2;
- dev_dbg(priv->dev, "BTACNTRL1: 0x%x\n", val);
tc358768_write(priv, TC358768_BTACNTRL1, val);
/* START[0] */
--
2.35.3