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Message-ID: <20240930100610.782363-4-shiyongbang@huawei.com>
Date: Mon, 30 Sep 2024 18:06:09 +0800
From: shiyongbang <shiyongbang@...wei.com>
To: <xinliang.liu@...aro.org>, <tiantao6@...ilicon.com>,
<maarten.lankhorst@...ux.intel.com>, <mripard@...nel.org>,
<tzimmermann@...e.de>, <airlied@...il.com>, <daniel@...ll.ch>,
<kong.kongxinwei@...ilicon.com>
CC: <liangjian010@...wei.com>, <chenjianmin@...wei.com>,
<lidongming5@...wei.com>, <shiyongbang@...wei.com>, <libaihan@...wei.com>,
<shenjian15@...wei.com>, <shaojijie@...wei.com>,
<dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH drm-dp 3/4] drm/hisilicon/hibmc: add dp kapi moduel in hibmc drivers
From: baihan li <libaihan@...wei.com>
Build a kapi level that hibmc driver can enable dp by
calling these kapi functions.
Signed-off-by: baihan li <libaihan@...wei.com>
---
drivers/gpu/drm/hisilicon/hibmc/Makefile | 2 +-
.../gpu/drm/hisilicon/hibmc/dp/dp_config.h | 20 ++++++++
drivers/gpu/drm/hisilicon/hibmc/dp/dp_kapi.c | 12 ++---
drivers/gpu/drm/hisilicon/hibmc/dp/dp_kapi.h | 48 +++++++++++++++++++
4 files changed, 75 insertions(+), 7 deletions(-)
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_config.h
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_kapi.h
diff --git a/drivers/gpu/drm/hisilicon/hibmc/Makefile b/drivers/gpu/drm/hisilicon/hibmc/Makefile
index 94d77da88bbf..693036dfab52 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/Makefile
+++ b/drivers/gpu/drm/hisilicon/hibmc/Makefile
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0-only
hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_de.o hibmc_drm_vdac.o hibmc_drm_i2c.o \
- dp/dp_aux.o dp/dp_link.o
+ dp/dp_aux.o dp/dp_link.o dp/dp_kapi.o
obj-$(CONFIG_DRM_HISI_HIBMC) += hibmc-drm.o
diff --git a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_config.h b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_config.h
new file mode 100644
index 000000000000..a6353a808cc4
--- /dev/null
+++ b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_config.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (c) 2024 Hisilicon Limited. */
+
+#ifndef DP_CONFIG_H
+#define DP_CONFIG_H
+
+#define DP_BPP 24
+#define DP_SYMBOL_PER_FCLK 4
+#define DP_MIN_PULSE_NUM 0x9
+#define DP_MSA1 0x20
+#define DP_MSA2 0x845c00
+#define DP_OFFSET 0x1e0000
+#define DP_HDCP 0x2
+#define DP_INT_RST 0xffff
+#define DP_DPTX_RST 0x3ff
+#define DP_CLK_EN 0x7
+#define DP_SYNC_EN_MASK 0x3
+#define DP_LINK_RATE_CAL 27
+
+#endif
diff --git a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_kapi.c b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_kapi.c
index 4091723473ad..ca7edc69427c 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_kapi.c
+++ b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_kapi.c
@@ -64,12 +64,12 @@ static void hibmc_dp_set_tu(struct hibmc_dp_dev *dp, struct dp_mode *mode)
rate_ks = dp->link.cap.link_rate * DP_LINK_RATE_CAL;
value = (pixel_clock * bpp * 5000) / (61 * lane_num * rate_ks);
- if (value % 10 == 9) { /* 10: div, 9: carry */
- tu_symbol_size = value / 10 + 1; /* 10: div */
+ if (value % 10 == 9) { /* 9 carry */
+ tu_symbol_size = value / 10 + 1;
tu_symbol_frac_size = 0;
} else {
- tu_symbol_size = value / 10; /* 10: div */
- tu_symbol_frac_size = value % 10 + 1; /* 10: div */
+ tu_symbol_size = value / 10;
+ tu_symbol_frac_size = value % 10 + 1;
}
drm_info(dp->dev, "tu value: %u.%u value: %u\n",
@@ -158,7 +158,7 @@ static void hibmc_dp_link_cfg(struct hibmc_dp_dev *dp, struct dp_mode *mode)
dp_write_bits(dp->base + DP_VIDEO_CTRL,
DP_CFG_STREAM_HSYNC_POLARITY, mode->h_pol);
- /* MSA mic 0 and 1*/
+ /* MSA mic 0 and 1 */
writel(DP_MSA1, dp->base + DP_VIDEO_MSA1);
writel(DP_MSA2, dp->base + DP_VIDEO_MSA2);
@@ -167,7 +167,7 @@ static void hibmc_dp_link_cfg(struct hibmc_dp_dev *dp, struct dp_mode *mode)
dp_write_bits(dp->base + DP_VIDEO_CTRL, DP_CFG_STREAM_RGB_ENABLE, 0x1);
dp_write_bits(dp->base + DP_VIDEO_CTRL, DP_CFG_STREAM_VIDEO_MAPPING, 0);
- /*divide 2: up even */
+ /* divide 2: up even */
if (timing_delay % 2)
timing_delay++;
diff --git a/drivers/gpu/drm/hisilicon/hibmc/dp/dp_kapi.h b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_kapi.h
new file mode 100644
index 000000000000..6b07642d55b8
--- /dev/null
+++ b/drivers/gpu/drm/hisilicon/hibmc/dp/dp_kapi.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/* Copyright (c) 2024 Hisilicon Limited. */
+
+#ifndef DP_KAPI_H
+#define DP_KAPI_H
+
+#include <linux/types.h>
+#include <drm/drm_device.h>
+#include <drm/drm_encoder.h>
+#include <drm/drm_connector.h>
+#include <drm/drm_print.h>
+#include <linux/delay.h>
+
+struct hibmc_dp_dev;
+
+struct dp_mode {
+ u32 h_total;
+ u32 h_active;
+ u32 h_blank;
+ u32 h_front;
+ u32 h_sync;
+ u32 h_back;
+ bool h_pol;
+ u32 v_total;
+ u32 v_active;
+ u32 v_blank;
+ u32 v_front;
+ u32 v_sync;
+ u32 v_back;
+ bool v_pol;
+ u32 field_rate;
+ u32 pixel_clock; // khz
+};
+
+struct hibmc_dp {
+ struct hibmc_dp_dev *dp_dev;
+ struct drm_device *drm_dev;
+ struct drm_encoder encoder;
+ struct drm_connector connector;
+ void __iomem *mmio;
+};
+
+int hibmc_dp_kapi_init(struct hibmc_dp *dp);
+void hibmc_dp_kapi_uninit(struct hibmc_dp *dp);
+int hibmc_dp_mode_set(struct hibmc_dp *dp, struct dp_mode *mode);
+void hibmc_dp_display_en(struct hibmc_dp *dp, bool enable);
+
+#endif
--
2.33.0
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