From 04dd17822334871b23ea2862f7798fb0e0007777 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 11 May 2024 08:53:19 +0000
Subject: [PATCH] change otg to host mode
---
kernel/drivers/gpu/drm/bridge/adv7511/adv7533.c | 38 ++++++++++++++------------------------
1 files changed, 14 insertions(+), 24 deletions(-)
diff --git a/kernel/drivers/gpu/drm/bridge/adv7511/adv7533.c b/kernel/drivers/gpu/drm/bridge/adv7511/adv7533.c
index 185b6d8..e0bdedf 100644
--- a/kernel/drivers/gpu/drm/bridge/adv7511/adv7533.c
+++ b/kernel/drivers/gpu/drm/bridge/adv7511/adv7533.c
@@ -1,14 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2016, The Linux Foundation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 and
- * only version 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
*/
#include <linux/of_graph.h>
@@ -108,26 +100,24 @@
regmap_write(adv->regmap_cec, 0x27, 0x0b);
}
-void adv7533_mode_set(struct adv7511 *adv, struct drm_display_mode *mode)
+enum drm_mode_status adv7533_mode_valid(struct adv7511 *adv,
+ const struct drm_display_mode *mode)
{
+ unsigned long max_lane_freq;
struct mipi_dsi_device *dsi = adv->dsi;
- int lanes, ret;
+ u8 bpp = mipi_dsi_pixel_format_to_bpp(dsi->format);
- if (adv->num_dsi_lanes != 4)
- return;
+ /* Check max clock for either 7533 or 7535 */
+ if (mode->clock > (adv->type == ADV7533 ? 80000 : 148500))
+ return MODE_CLOCK_HIGH;
- if (mode->clock > 80000)
- lanes = 4;
- else
- lanes = 3;
+ /* Check max clock for each lane */
+ max_lane_freq = (adv->type == ADV7533 ? 800000 : 891000);
- if (lanes != dsi->lanes) {
- mipi_dsi_detach(dsi);
- dsi->lanes = lanes;
- ret = mipi_dsi_attach(dsi);
- if (ret)
- dev_err(&dsi->dev, "failed to change host lanes\n");
- }
+ if (mode->clock * bpp > max_lane_freq * adv->num_dsi_lanes)
+ return MODE_CLOCK_HIGH;
+
+ return MODE_OK;
}
int adv7533_patch_registers(struct adv7511 *adv)
--
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