1 files changed, 64 insertions, 0 deletions

diff --git a/drivers/gpu/drm/msm/msm_mdss.c b/drivers/gpu/drm/msm/msm_mdss.c
index 35423d10a..fab6ad4e5 100644
--- a/drivers/gpu/drm/msm/msm_mdss.c
+++ b/drivers/gpu/drm/msm/msm_mdss.c
@@ -3,6 +3,7 @@
  * Copyright (c) 2018, The Linux Foundation
  */
 
+#include <linux/bitfield.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/interconnect.h>
@@ -213,6 +214,49 @@ static void msm_mdss_setup_ubwc_dec_40(struct msm_mdss *msm_mdss)
 	}
 }
 
+#define MDSS_HW_MAJ_MIN		GENMASK(31, 16)
+
+#define MDSS_HW_MSM8996		0x1007
+#define MDSS_HW_MSM8937		0x100e
+#define MDSS_HW_MSM8953		0x1010
+#define MDSS_HW_MSM8998		0x3000
+#define MDSS_HW_SDM660		0x3002
+#define MDSS_HW_SDM630		0x3003
+
+/*
+ * MDP5 platforms use generic qcom,mdp5 compat string, so we have to generate this data
+ */
+static const struct msm_mdss_data *msm_mdss_generate_mdp5_mdss_data(struct msm_mdss *mdss)
+{
+	struct msm_mdss_data *data;
+	u32 hw_rev;
+
+	data = devm_kzalloc(mdss->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return NULL;
+
+	hw_rev = readl_relaxed(mdss->mmio + HW_REV);
+	hw_rev = FIELD_GET(MDSS_HW_MAJ_MIN, hw_rev);
+
+	if (hw_rev == MDSS_HW_MSM8996 ||
+	    hw_rev == MDSS_HW_MSM8937 ||
+	    hw_rev == MDSS_HW_MSM8953 ||
+	    hw_rev == MDSS_HW_MSM8998 ||
+	    hw_rev == MDSS_HW_SDM660 ||
+	    hw_rev == MDSS_HW_SDM630) {
+		data->ubwc_dec_version = UBWC_1_0;
+		data->ubwc_enc_version = UBWC_1_0;
+	}
+
+	if (hw_rev == MDSS_HW_MSM8996 ||
+	    hw_rev == MDSS_HW_MSM8998)
+		data->highest_bank_bit = 2;
+	else
+		data->highest_bank_bit = 1;
+
+	return data;
+}
+
 const struct msm_mdss_data *msm_mdss_get_mdss_data(struct device *dev)
 {
 	struct msm_mdss *mdss;
@@ -222,6 +266,13 @@ const struct msm_mdss_data *msm_mdss_get_mdss_data(struct device *dev)
 
 	mdss = dev_get_drvdata(dev);
 
+	/*
+	 * We could not do it at the probe time, since hw revision register was
+	 * not readable. Fill data structure now for the MDP5 platforms.
+	 */
+	if (!mdss->mdss_data && mdss->is_mdp5)
+		mdss->mdss_data = msm_mdss_generate_mdp5_mdss_data(mdss);
+
 	return mdss->mdss_data;
 }
 
@@ -636,6 +687,18 @@ static const struct msm_mdss_data sm8550_data = {
 	.macrotile_mode = 1,
 	.reg_bus_bw = 57000,
 };
+
+static const struct msm_mdss_data x1e80100_data = {
+	.ubwc_enc_version = UBWC_4_0,
+	.ubwc_dec_version = UBWC_4_3,
+	.ubwc_swizzle = 6,
+	.ubwc_static = 1,
+	/* TODO: highest_bank_bit = 2 for LP_DDR4 */
+	.highest_bank_bit = 3,
+	.macrotile_mode = 1,
+	/* TODO: Add reg_bus_bw with real value */
+};
+
 static const struct of_device_id mdss_dt_match[] = {
 	{ .compatible = "qcom,mdss" },
 	{ .compatible = "qcom,msm8998-mdss", .data = &msm8998_data },
@@ -656,6 +719,7 @@ static const struct of_device_id mdss_dt_match[] = {
 	{ .compatible = "qcom,sm8450-mdss", .data = &sm8350_data },
 	{ .compatible = "qcom,sm8550-mdss", .data = &sm8550_data },
 	{ .compatible = "qcom,sm8650-mdss", .data = &sm8550_data},
+	{ .compatible = "qcom,x1e80100-mdss", .data = &x1e80100_data},
 	{}
 };
 MODULE_DEVICE_TABLE(of, mdss_dt_match);