From: Enric Balletbo i Serra <enric.balletbo@collabora.com>
To: architt@codeaurora.org, inki.dae@samsung.com,
thierry.reding@gmail.com, hjc@rock-chips.com,
seanpaul@chromium.org, airlied@linux.ie, tfiga@chromium.org,
heiko@sntech.de
Cc: hshi@chromium.org, wzz@rock-chips.com, hl@rock-chips.com,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
dianders@chromium.org, linux-rockchip@lists.infradead.org,
orjan.eide@arm.com, m.szyprowski@samsung.com,
"Stéphane Marchesin" <marcheu@chromium.org>,
"Enric Balletbo i Serra" <enric.balletbo@collabora.com>
Subject: [PATCH v4 10/38] drm/bridge: analogix_dp: Check AUX_EN status when doing AUX transfer
Date: Mon, 5 Mar 2018 23:23:02 +0100 [thread overview]
Message-ID: <20180305222324.5872-11-enric.balletbo@collabora.com> (raw)
In-Reply-To: <20180305222324.5872-1-enric.balletbo@collabora.com>
From: Lin Huang <hl@rock-chips.com>
We should check AUX_EN bit to confirm the AUX CH operation is completed.
Cc: Stéphane Marchesin <marcheu@chromium.org>
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: zain wang <wzz@rock-chips.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
---
drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 25 +++++++++++++----------
1 file changed, 14 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
index 9df2f3ef000c..e78c861b9e06 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c
@@ -1073,9 +1073,9 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
{
u32 reg;
u8 *buffer = msg->buffer;
- int timeout_loop = 0;
unsigned int i;
int num_transferred = 0;
+ int ret;
/* Buffer size of AUX CH is 16 bytes */
if (WARN_ON(msg->size > 16))
@@ -1139,17 +1139,20 @@ ssize_t analogix_dp_transfer(struct analogix_dp_device *dp,
writel(reg, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2);
- /* Is AUX CH command reply received? */
+ ret = readx_poll_timeout(readl, dp->reg_base + ANALOGIX_DP_AUX_CH_CTL_2,
+ reg, !(reg & AUX_EN), 25, 500 * 1000);
+ if (ret) {
+ dev_err(dp->dev, "AUX CH enable timeout!\n");
+ return -ETIMEDOUT;
+ }
+
/* TODO: Wait for an interrupt instead of looping? */
- reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
- while (!(reg & RPLY_RECEIV)) {
- timeout_loop++;
- if (timeout_loop > DP_TIMEOUT_LOOP_COUNT) {
- dev_err(dp->dev, "AUX CH command reply failed!\n");
- return -ETIMEDOUT;
- }
- reg = readl(dp->reg_base + ANALOGIX_DP_INT_STA);
- usleep_range(10, 11);
+ /* Is AUX CH command reply received? */
+ ret = readx_poll_timeout(readl, dp->reg_base + ANALOGIX_DP_INT_STA,
+ reg, reg & RPLY_RECEIV, 10, 20 * 1000);
+ if (ret) {
+ dev_err(dp->dev, "AUX CH cmd reply timeout!\n");
+ return -ETIMEDOUT;
}
/* Clear interrupt source for AUX CH command reply */
--
2.16.1
next prev parent reply other threads:[~2018-03-05 22:24 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20180305222337epcas3p22a4f5c32c5622d89f6e649b26c0a6043@epcas3p2.samsung.com>
2018-03-05 22:22 ` [PATCH v4 00/38] DRM Rockchip rk3399 (Kevin) Enric Balletbo i Serra
2018-03-05 22:22 ` [PATCH v4 01/38] drm/bridge: analogix_dp: set psr activate/deactivate when enable/disable bridge Enric Balletbo i Serra
2018-03-08 22:44 ` Heiko Stuebner
2018-03-05 22:22 ` [PATCH v4 02/38] drm/rockchip: Don't use atomic constructs for psr Enric Balletbo i Serra
2018-03-08 22:44 ` Heiko Stuebner
2018-03-05 22:22 ` [PATCH v4 03/38] drm/bridge: analogix_dp: detect Sink PSR state after configuring the PSR Enric Balletbo i Serra
2018-03-08 22:53 ` Heiko Stuebner
2018-03-05 22:22 ` [PATCH v4 04/38] drm/rockchip: Remove analogix psr worker Enric Balletbo i Serra
2018-03-05 22:22 ` [PATCH v4 05/38] drm/bridge: analogix_dp: Don't change psr while bridge is disabled Enric Balletbo i Serra
2018-03-05 22:22 ` [PATCH v4 06/38] drm/rockchip: add mutex vop lock Enric Balletbo i Serra
2018-03-05 22:22 ` [PATCH v4 07/38] drm/bridge: analogix_dp: add fast link train for eDP Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 08/38] drm/rockchip: Only wait for panel ACK on PSR entry Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 09/38] drm/bridge: analogix_dp: Move enable video into config_video() Enric Balletbo i Serra
2018-03-05 22:23 ` Enric Balletbo i Serra [this message]
2018-03-05 22:23 ` [PATCH v4 11/38] drm/bridge: analogix_dp: Don't use fast link training when panel just powered up Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 12/38] drm/bridge: analogix_dp: Retry bridge enable when it failed Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 13/38] drm/bridge: analogix_dp: Wait for HPD signal before configuring link Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 14/38] drm/bridge: analogix_dp: Set PD_INC_BG first when powering up edp phy Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 15/38] drm/bridge: analogix_dp: Ensure edp is disabled when shutting down the panel Enric Balletbo i Serra
2018-03-06 7:35 ` Marek Szyprowski
2018-03-06 8:49 ` Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 16/38] drm/bridge: analogix_dp: Extend hpd check time to 100ms Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 17/38] drm/bridge: analogix_dp: Fix incorrect usage of enhanced mode Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 18/38] drm/bridge: analogix_dp: Check dpcd write/read status Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 19/38] drm/bridge: analogix_dp: Fix AUX_PD bit for Rockchip Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 20/38] drm/bridge: analogix_dp: Reset aux channel if an error occurred Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 21/38] drm/rockchip: Restore psr->state when enable/disable psr failed Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 22/38] drm/bridge: analogix_dp: Don't use ANALOGIX_DP_PLL_CTL to control pll Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 23/38] drm/bridge: analogix_dp: Fix timeout of video streamclk config Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 24/38] drm/bridge: analogix_dp: Fix incorrect operations with register ANALOGIX_DP_FUNC_EN_1 Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 25/38] drm/bridge: analogix_dp: Move fast link training detect to set_bridge Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 26/38] drm/bridge: analogix_dp: Reorder plat_data->power_off to happen sooner Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 27/38] drm/bridge: analogix_dp: Properly log AUX CH errors Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 28/38] drm/bridge: analogix_dp: Properly disable aux chan retries on rockchip Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 29/38] drm/rockchip: pre dither down when output bpc is 8bit Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 30/38] drm/bridge: analogix_dp: Split the platform-specific poweron in two parts Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 31/38] drm/rockchip: analogix_dp: Do not call Analogix code before bind Enric Balletbo i Serra
2018-03-05 22:23 ` [PATCH v4 32/38] drm/rockchip: Disable PSR on input events Enric Balletbo i Serra
2018-03-06 10:15 ` [PATCH v4 00/38] DRM Rockchip rk3399 (Kevin) Marek Szyprowski
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