[PATCH 3/6] drm/msm/mdss: export UBWC data

[Dmitry Baryshkov]

DPU programming requires knowledge of some of UBWC parameters. This
results in duplication of UBWC data between MDSS and DPU drivers. Export
the required data from MDSS driver.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
 drivers/gpu/drm/msm/msm_mdss.c | 30 +++++++++++++-----------------
 drivers/gpu/drm/msm/msm_mdss.h | 27 +++++++++++++++++++++++++++
 2 files changed, 40 insertions(+), 17 deletions(-)
 create mode 100644 drivers/gpu/drm/msm/msm_mdss.h

diff --git a/drivers/gpu/drm/msm/msm_mdss.c b/drivers/gpu/drm/msm/msm_mdss.c
index d1e57099b517..ed836c659688 100644
--- a/drivers/gpu/drm/msm/msm_mdss.c
+++ b/drivers/gpu/drm/msm/msm_mdss.c
@@ -13,7 +13,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/reset.h>
 
-#include "msm_drv.h"
+#include "msm_mdss.h"
 #include "msm_kms.h"
 
 #define HW_REV				0x0
@@ -26,16 +26,6 @@
 
 #define MIN_IB_BW	400000000UL /* Min ib vote 400MB */
 
-struct msm_mdss_data {
-	u32 ubwc_enc_version;
-	/* can be read from register 0x58 */
-	u32 ubwc_dec_version;
-	u32 ubwc_swizzle;
-	u32 ubwc_static;
-	u32 highest_bank_bit;
-	u32 macrotile_mode;
-};
-
 struct msm_mdss {
 	struct device *dev;
 
@@ -185,12 +175,6 @@ static int _msm_mdss_irq_domain_add(struct msm_mdss *msm_mdss)
 	return 0;
 }
 
-#define UBWC_1_0 0x10000000
-#define UBWC_2_0 0x20000000
-#define UBWC_3_0 0x30000000
-#define UBWC_4_0 0x40000000
-#define UBWC_4_3 0x40030000
-
 static void msm_mdss_setup_ubwc_dec_20(struct msm_mdss *msm_mdss)
 {
 	const struct msm_mdss_data *data = msm_mdss->mdss_data;
@@ -236,6 +220,18 @@ static void msm_mdss_setup_ubwc_dec_40(struct msm_mdss *msm_mdss)
 	}
 }
 
+const struct msm_mdss_data *msm_mdss_get_mdss_data(struct device *dev)
+{
+	struct msm_mdss *mdss;
+
+	if (!dev)
+		return ERR_PTR(-EINVAL);
+
+	mdss = dev_get_drvdata(dev);
+
+	return mdss->mdss_data;
+}
+
 static int msm_mdss_enable(struct msm_mdss *msm_mdss)
 {
 	int ret;
diff --git a/drivers/gpu/drm/msm/msm_mdss.h b/drivers/gpu/drm/msm/msm_mdss.h
new file mode 100644
index 000000000000..02bbab42adbc
--- /dev/null
+++ b/drivers/gpu/drm/msm/msm_mdss.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2018, The Linux Foundation
+ */
+
+#ifndef __MSM_MDSS_H__
+#define __MSM_MDSS_H__
+
+struct msm_mdss_data {
+	u32 ubwc_enc_version;
+	/* can be read from register 0x58 */
+	u32 ubwc_dec_version;
+	u32 ubwc_swizzle;
+	u32 ubwc_static;
+	u32 highest_bank_bit;
+	u32 macrotile_mode;
+};
+
+#define UBWC_1_0 0x10000000
+#define UBWC_2_0 0x20000000
+#define UBWC_3_0 0x30000000
+#define UBWC_4_0 0x40000000
+#define UBWC_4_3 0x40030000
+
+const struct msm_mdss_data *msm_mdss_get_mdss_data(struct device *dev);
+
+#endif /* __MSM_MDSS_H__ */
-- 
2.39.2