disp: msm: dsi: remove dsi bus scaling setting

DSI driver did not use msm bus scaling setting,
remove the code.

Change-Id: I71675c8f4e3e97f1ded72ecac3fa87bdc7fb3774
Signed-off-by: Yuan Zhao <yzhao@codeaurora.org>

msm/dsi/dsi_clk.h

@@ -178,7 +178,6 @@ typedef int (*pre_clockon_cb)(void *priv,
  * @c_clks[MAX_DSI_CTRL]     array of core clock configurations
  * @l_lp_clks[MAX_DSI_CTRL]  array of low power(esc) clock configurations
  * @l_hs_clks[MAX_DSI_CTRL]  array of high speed clock configurations
- * @bus_handle[MAX_DSI_CTRL] array of bus handles
  * @ctrl_index[MAX_DSI_CTRL] array of DSI controller indexes mapped
  *                           to core and link clock configurations
  * @pre_clkoff_cb            callback before clock is turned off
@@ -194,7 +193,6 @@ struct dsi_clk_info {
 	struct dsi_core_clk_info c_clks[MAX_DSI_CTRL];
 	struct dsi_link_lp_clk_info l_lp_clks[MAX_DSI_CTRL];
 	struct dsi_link_hs_clk_info l_hs_clks[MAX_DSI_CTRL];
-	u32 bus_handle[MAX_DSI_CTRL];
 	u32 ctrl_index[MAX_DSI_CTRL];
 	pre_clockoff_cb pre_clkoff_cb;
 	post_clockoff_cb post_clkoff_cb;

msm/dsi/dsi_clk_manager.c

@@ -6,14 +6,12 @@
 #include <linux/of.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
-#include <linux/msm-bus.h>
 #include <linux/pm_runtime.h>
 #include "dsi_clk.h"
 #include "dsi_defs.h"
 
 struct dsi_core_clks {
 	struct dsi_core_clk_info clks;
-	u32 bus_handle;
 };
 
 struct dsi_link_clks {
@@ -265,19 +263,9 @@ int dsi_core_clk_start(struct dsi_core_clks *c_clks)
 		}
 	}
 
-	if (c_clks->bus_handle) {
-		rc = msm_bus_scale_client_update_request(c_clks->bus_handle, 1);
-		if (rc) {
-			DSI_ERR("bus scale client enable failed, rc=%d\n", rc);
-			goto error_disable_mmss_clk;
-		}
-	}
 
 	return rc;
 
-error_disable_mmss_clk:
-	if (c_clks->clks.core_mmss_clk)
-		clk_disable_unprepare(c_clks->clks.core_mmss_clk);
 error_disable_bus_clk:
 	if (c_clks->clks.bus_clk)
 		clk_disable_unprepare(c_clks->clks.bus_clk);
@@ -298,14 +286,6 @@ int dsi_core_clk_stop(struct dsi_core_clks *c_clks)
 {
 	int rc = 0;
 
-	if (c_clks->bus_handle) {
-		rc = msm_bus_scale_client_update_request(c_clks->bus_handle, 0);
-		if (rc) {
-			DSI_ERR("bus scale client disable failed, rc=%d\n", rc);
-			return rc;
-		}
-	}
-
 	if (c_clks->clks.core_mmss_clk)
 		clk_disable_unprepare(c_clks->clks.core_mmss_clk);
 
@@ -1446,7 +1426,6 @@ void *dsi_display_clk_mngr_register(struct dsi_clk_info *info)
 			sizeof(struct dsi_link_hs_clk_info));
 		memcpy(&mngr->link_clks[i].lp_clks, &info->l_lp_clks[i],
 			sizeof(struct dsi_link_lp_clk_info));
-		mngr->core_clks[i].bus_handle = info->bus_handle[i];
 		mngr->ctrl_index[i] = info->ctrl_index[i];
 	}
 

msm/dsi/dsi_ctrl.c

@@ -7,7 +7,6 @@
 #include <linux/err.h>
 #include <linux/regulator/consumer.h>
 #include <linux/clk.h>
-#include <linux/msm-bus.h>
 #include <linux/of_irq.h>
 #include <video/mipi_display.h>
 
@@ -812,43 +811,6 @@ error_digital:
 	return rc;
 }
 
-static int dsi_ctrl_axi_bus_client_init(struct platform_device *pdev,
-					struct dsi_ctrl *ctrl)
-{
-	int rc = 0;
-	struct dsi_ctrl_bus_scale_info *bus = &ctrl->axi_bus_info;
-
-	bus->bus_scale_table = msm_bus_cl_get_pdata(pdev);
-	if (IS_ERR_OR_NULL(bus->bus_scale_table)) {
-		rc = PTR_ERR(bus->bus_scale_table);
-		DSI_CTRL_DEBUG(ctrl, "msm_bus_cl_get_pdata() failed, rc = %d\n",
-				rc);
-		bus->bus_scale_table = NULL;
-		return rc;
-	}
-
-	bus->bus_handle = msm_bus_scale_register_client(bus->bus_scale_table);
-	if (!bus->bus_handle) {
-		rc = -EINVAL;
-		DSI_CTRL_ERR(ctrl, "failed to register axi bus client\n");
-	}
-
-	return rc;
-}
-
-static int dsi_ctrl_axi_bus_client_deinit(struct dsi_ctrl *ctrl)
-{
-	struct dsi_ctrl_bus_scale_info *bus = &ctrl->axi_bus_info;
-
-	if (bus->bus_handle) {
-		msm_bus_scale_unregister_client(bus->bus_handle);
-
-		bus->bus_handle = 0;
-	}
-
-	return 0;
-}
-
 static int dsi_ctrl_validate_panel_info(struct dsi_ctrl *dsi_ctrl,
 					struct dsi_host_config *config)
 {
@@ -1928,11 +1890,6 @@ static int dsi_ctrl_dev_probe(struct platform_device *pdev)
 		goto fail_supplies;
 	}
 
-	rc = dsi_ctrl_axi_bus_client_init(pdev, dsi_ctrl);
-	if (rc)
-		DSI_CTRL_DEBUG(dsi_ctrl, "failed to init axi bus client, rc = %d\n",
-				rc);
-
 	item->ctrl = dsi_ctrl;
 
 	mutex_lock(&dsi_ctrl_list_lock);
@@ -1977,10 +1934,6 @@ static int dsi_ctrl_dev_remove(struct platform_device *pdev)
 	mutex_unlock(&dsi_ctrl_list_lock);
 
 	mutex_lock(&dsi_ctrl->ctrl_lock);
-	rc = dsi_ctrl_axi_bus_client_deinit(dsi_ctrl);
-	if (rc)
-		DSI_CTRL_ERR(dsi_ctrl, "failed to deinitialize axi bus client, rc = %d\n",
-				rc);
 
 	rc = dsi_ctrl_supplies_deinit(dsi_ctrl);
 	if (rc)

msm/dsi/dsi_ctrl.h

@@ -136,16 +136,6 @@ struct dsi_ctrl_clk_info {
 	struct dsi_clk_link_set shadow_clks;
 };
 
-/**
- * struct dsi_ctrl_bus_scale_info - Bus scale info for msm-bus bandwidth voting
- * @bus_scale_table:        Bus scale voting usecases.
- * @bus_handle:             Handle used for voting bandwidth.
- */
-struct dsi_ctrl_bus_scale_info {
-	struct msm_bus_scale_pdata *bus_scale_table;
-	u32 bus_handle;
-};
-
 /**
  * struct dsi_ctrl_state_info - current driver state information
  * @power_state:        Status of power states on DSI controller.
@@ -208,7 +198,6 @@ struct dsi_ctrl_interrupts {
  * @clk_info:            Clock information.
  * @clk_freq:            DSi Link clock frequency information.
  * @pwr_info:            Power information.
- * @axi_bus_info:        AXI bus information.
  * @host_config:         Current host configuration.
  * @mode_bounds:         Boundaries of the default mode ROI.
  *                       Origin is at top left of all CTRLs.
@@ -263,7 +252,6 @@ struct dsi_ctrl {
 	struct dsi_ctrl_clk_info clk_info;
 	struct link_clk_freq clk_freq;
 	struct dsi_ctrl_power_info pwr_info;
-	struct dsi_ctrl_bus_scale_info axi_bus_info;
 
 	struct dsi_host_config host_config;
 	struct dsi_rect mode_bounds;

msm/dsi/dsi_display.c

@@ -4874,8 +4874,6 @@ static int dsi_display_bind(struct device *dev,
 				sizeof(struct dsi_link_lp_clk_info));
 
 		info.c_clks[i].drm = drm;
-		info.bus_handle[i] =
-			display_ctrl->ctrl->axi_bus_info.bus_handle;
 		info.ctrl_index[i] = display_ctrl->ctrl->cell_index;
 	}
 

msm/dsi/dsi_phy.c

@@ -7,7 +7,6 @@
 #include <linux/err.h>
 #include <linux/regulator/consumer.h>
 #include <linux/clk.h>
-#include <linux/msm-bus.h>
 #include <linux/list.h>
 
 #include "msm_drv.h"