From 40e19ff3ed8ab5f2be095715bf2233d50d481a91 Mon Sep 17 00:00:00 2001
From: Deven Solanki <quic_dsolanki@quicinc.com>
Date: Wed, 3 Aug 2022 13:01:36 +0530
Subject: [PATCH 1/2] disp: msm: dsi: add support for dsi config

Add uio support for dsi config.

Change-Id: I2098a6b3abe95794cf3e08dbb34198543d15385c
Signed-off-by: Deven Solanki <quic_dsolanki@quicinc.com>
---
 msm/dsi/dsi_ctrl.c | 59 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/msm/dsi/dsi_ctrl.c b/msm/dsi/dsi_ctrl.c
index 7a5f3335e9b0..d9721e102a55 100644
--- a/msm/dsi/dsi_ctrl.c
+++ b/msm/dsi/dsi_ctrl.c
@@ -11,6 +11,10 @@
 #include <linux/of_irq.h>
 #include <video/mipi_display.h>
 
+#ifdef CONFIG_UIO
+#include <linux/uio_driver.h>
+#endif
+
 #include "msm_drv.h"
 #include "msm_kms.h"
 #include "msm_mmu.h"
@@ -2094,6 +2098,58 @@ static int dsi_ctrl_dts_parse(struct dsi_ctrl *dsi_ctrl,
 	return 0;
 }
 
+#ifdef CONFIG_UIO
+static void uio_init(struct platform_device *pdev)
+{
+	struct uio_info *uio_reg_info = NULL;
+	struct resource *clnt_res = NULL;
+	int ret = 0;
+	u32 mem_size = 0;
+	phys_addr_t mem_pyhsical = 0;
+
+	clnt_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "disp_conf");
+	if (!clnt_res) {
+		pr_debug("resource not found\n");
+		return;
+	}
+
+	mem_size = resource_size(clnt_res);
+	if (mem_size == 0) {
+		pr_debug("resource memory size is zero\n");
+		goto exit;
+	}
+
+	uio_reg_info = devm_kzalloc(&pdev->dev, sizeof(struct uio_info),
+			GFP_KERNEL);
+	if (!uio_reg_info)
+		goto exit;
+
+	mem_pyhsical = clnt_res->start;
+
+	/* Setup device */
+	uio_reg_info->name = clnt_res->name;
+	uio_reg_info->version = "1.0";
+	uio_reg_info->mem[0].addr = mem_pyhsical;
+	uio_reg_info->mem[0].size = mem_size;
+	uio_reg_info->mem[0].memtype = UIO_MEM_PHYS;
+
+	ret = uio_register_device(&pdev->dev, uio_reg_info);
+	if (ret) {
+		pr_debug("uio register failed. ret:%d\n", ret);
+		goto exit;
+	}
+
+	pr_debug("Device file created for dsi_ctrl config.\n");
+	return;
+exit:
+	pr_debug("Unable to get dsi_ctrl config.\n");
+}
+#else	/* CONFIG_UIO */
+static void uio_init(struct platform_device *pdev)
+{
+}
+#endif	/* CONFIG_UIO */
+
 static int dsi_ctrl_dev_probe(struct platform_device *pdev)
 {
 	struct dsi_ctrl *dsi_ctrl;
@@ -2173,6 +2229,9 @@ static int dsi_ctrl_dev_probe(struct platform_device *pdev)
 
 	dsi_ctrl->pdev = pdev;
 	platform_set_drvdata(pdev, dsi_ctrl);
+
+	uio_init(pdev);
+
 	DSI_CTRL_INFO(dsi_ctrl, "Probe successful\n");
 
 	return 0;

From d5dd61b0117df3803646e62335a3f641432507be Mon Sep 17 00:00:00 2001
From: Mahadevan <quic_mahap@quicinc.com>
Date: Fri, 16 Sep 2022 10:41:56 +0530
Subject: [PATCH 2/2] disp: msm: sde: fix min ib vote in mnoc and ebi_ib path

This change sets proper minimum vote for lcc_mnoc and
ebi_ib path.

Change-Id: Idbb8667a7416e359e848d3f4dc266531979639d3
Signed-off-by: Mahadevan <quic_mahap@quicinc.com>
---
 msm/sde/sde_kms.c      |  6 ++++--
 msm/sde_power_handle.c | 47 +++++++++++++++---------------------------
 msm/sde_power_handle.h | 15 ++------------
 3 files changed, 23 insertions(+), 45 deletions(-)

diff --git a/msm/sde/sde_kms.c b/msm/sde/sde_kms.c
index e626561eba0d..534aafd834e2 100644
--- a/msm/sde/sde_kms.c
+++ b/msm/sde/sde_kms.c
@@ -1240,12 +1240,14 @@ static void _sde_kms_release_splash_resource(struct sde_kms *sde_kms,
 {
 	struct msm_drm_private *priv;
 	struct sde_splash_display *splash_display;
+	struct sde_power_handle *phandle;
 	int i;
 
 	if (!sde_kms || !crtc)
 		return;
 
 	priv = sde_kms->dev->dev_private;
+	phandle = &priv->phandle;
 
 	if (!crtc->state->active || !sde_kms->splash_data.num_splash_displays)
 		return;
@@ -1272,9 +1274,9 @@ static void _sde_kms_release_splash_resource(struct sde_kms *sde_kms,
 	/* remove the votes if all displays are done with splash */
 	if (!sde_kms->splash_data.num_splash_displays) {
 		for (i = 0; i < SDE_POWER_HANDLE_DBUS_ID_MAX; i++)
-			sde_power_data_bus_set_quota(&priv->phandle, i,
+			sde_power_data_bus_set_quota(phandle, i,
 				SDE_POWER_HANDLE_ENABLE_BUS_AB_QUOTA,
-				SDE_POWER_HANDLE_ENABLE_BUS_IB_QUOTA);
+				phandle->ib_quota[i]);
 
 		pm_runtime_put_sync(sde_kms->dev->dev);
 	}
diff --git a/msm/sde_power_handle.c b/msm/sde_power_handle.c
index e17000a8ee23..26c4ce67ee42 100644
--- a/msm/sde_power_handle.c
+++ b/msm/sde_power_handle.c
@@ -473,21 +473,24 @@ static void sde_power_parse_ib_votes(struct platform_device *pdev,
 	if (rc)
 		pr_err("error reading min core ib vote. rc=%d, np=%x\n", rc, pdev->dev.of_node);
 
-	phandle->min_ib_vote.min_core_ib = (!rc ? tmp*1000 : 0);
+	phandle->ib_quota[SDE_POWER_HANDLE_DBUS_ID_MNOC] = (!rc ? tmp*1000 :
+							SDE_POWER_HANDLE_ENABLE_BUS_IB_QUOTA);
 
 	rc = of_property_read_u32(pdev->dev.of_node,
 			"qcom,sde-min-llcc-ib-kbps", &tmp);
 	if (rc)
 		pr_err("error reading min llcc ib vote. rc=%d\n", rc);
 
-	phandle->min_ib_vote.min_llcc_ib = (!rc ? tmp*1000 : 0);
+	phandle->ib_quota[SDE_POWER_HANDLE_DBUS_ID_LLCC] = (!rc ? tmp*1000 :
+							SDE_POWER_HANDLE_ENABLE_BUS_IB_QUOTA);
 
 	rc = of_property_read_u32(pdev->dev.of_node,
 			"qcom,sde-min-dram-ib-kbps", &tmp);
 	if (rc)
 		pr_err("error reading min dram ib vote. rc=%d\n", rc);
 
-	phandle->min_ib_vote.min_dram_ib = (!rc ? tmp*1000 : 0);
+	phandle->ib_quota[SDE_POWER_HANDLE_DBUS_ID_EBI] = (!rc ? tmp*1000 :
+							SDE_POWER_HANDLE_ENABLE_BUS_IB_QUOTA);
 }
 
 static int sde_power_bus_parse(struct platform_device *pdev,
@@ -732,7 +735,6 @@ int sde_power_resource_enable(struct sde_power_handle *phandle, bool enable)
 {
 	int rc = 0, i = 0;
 	struct dss_module_power *mp;
-	u32 bus_ib_quota = 0;
 
 	if (!phandle) {
 		pr_err("invalid input argument\n");
@@ -754,32 +756,17 @@ int sde_power_resource_enable(struct sde_power_handle *phandle, bool enable)
 		sde_power_event_trigger_locked(phandle,
 				SDE_POWER_EVENT_PRE_ENABLE);
 
-		for (i = 0; i < SDE_POWER_HANDLE_DBUS_ID_MAX &&
-			phandle->data_bus_handle[i].data_paths_cnt > 0; i++) {
-
-			bus_ib_quota = 0;
-			switch (i) {
-			case SDE_POWER_HANDLE_DBUS_ID_MNOC:
-				bus_ib_quota =
-					phandle->min_ib_vote.min_core_ib;
-				break;
-			case SDE_POWER_HANDLE_DBUS_ID_LLCC:
-				bus_ib_quota =
-					phandle->min_ib_vote.min_llcc_ib;
-				break;
-			case SDE_POWER_HANDLE_DBUS_ID_EBI:
-				bus_ib_quota =
-					phandle->min_ib_vote.min_dram_ib;
-			}
-
-			rc = _sde_power_data_bus_set_quota(
-				&phandle->data_bus_handle[i],
-				SDE_POWER_HANDLE_ENABLE_BUS_AB_QUOTA,
-				bus_ib_quota);
-			if (rc) {
-				pr_err("failed to set data bus vote id=%d rc=%d\n",
-						i, rc);
-				goto vreg_err;
+		for (i = 0; i < SDE_POWER_HANDLE_DBUS_ID_MAX; i++) {
+			if (phandle->data_bus_handle[i].data_paths_cnt > 0) {
+				rc = _sde_power_data_bus_set_quota(
+					&phandle->data_bus_handle[i],
+					SDE_POWER_HANDLE_ENABLE_BUS_AB_QUOTA,
+					phandle->ib_quota[i]);
+				if (rc) {
+					pr_err("failed to set data bus vote id=%d rc=%d\n",
+							i, rc);
+					goto vreg_err;
+				}
 			}
 		}
 		rc = msm_dss_enable_vreg(mp->vreg_config, mp->num_vreg,
diff --git a/msm/sde_power_handle.h b/msm/sde_power_handle.h
index 5eff752dfcaf..ac8c81df7330 100644
--- a/msm/sde_power_handle.h
+++ b/msm/sde_power_handle.h
@@ -126,18 +126,6 @@ struct sde_power_reg_bus_handle {
 	struct sde_power_bus_scaling_data scale_table[VOTE_INDEX_MAX];
 };
 
-/**
- * struct sde_min_ib_vote: ib votes on data bus
- * @min_core_ib: ib vote on mnoc
- * @min_llcc_ib: ib vote on llcc
- * @min_dram_ib: ib vote on dram
- */
-struct sde_min_ib_vote {
-	u32 min_core_ib;
-	u32 min_llcc_ib;
-	u32 min_dram_ib;
-};
-
 /*
  * struct sde_power_event - local event registration structure
  * @client_name: name of the client registering
@@ -166,6 +154,7 @@ struct sde_power_event {
  * @event_list: current power handle event list
  * @rsc_client: sde rsc client pointer
  * @rsc_client_init: boolean to control rsc client create
+ * @ib_quota: ib quota of the given bus
  */
 struct sde_power_handle {
 	struct dss_module_power mp;
@@ -178,7 +167,7 @@ struct sde_power_handle {
 	u32 last_event_handled;
 	struct sde_rsc_client *rsc_client;
 	bool rsc_client_init;
-	struct sde_min_ib_vote min_ib_vote;
+	u64 ib_quota[SDE_POWER_HANDLE_DBUS_ID_MAX];
 };
 
 /**