drivers/video/fbdev/msm/mdss_mdp.c

/*
 * MDSS MDP Interface (used by framebuffer core)
 *
 * Copyright (c) 2007-2018, The Linux Foundation. All rights reserved.
 * Copyright (C) 2007 Google Incorporated
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#define pr_fmt(fmt)	"%s: " fmt, __func__

#include <linux/clk.h>
#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/hrtimer.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/iommu.h>
#include <linux/iopoll.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/regulator/rpm-smd-regulator.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/sched.h>
#include <linux/time.h>
#include <linux/spinlock.h>
#include <linux/semaphore.h>
#include <linux/uaccess.h>
#include <linux/clk/msm-clk.h>
#include <linux/irqdomain.h>
#include <linux/irq.h>

#include <linux/msm-bus.h>
#include <linux/msm-bus-board.h>
#include <soc/qcom/scm.h>
#include <soc/qcom/rpm-smd.h>

#include "mdss.h"
#include "mdss_fb.h"
#include "mdss_mdp.h"
#include "mdss_panel.h"
#include "mdss_debug.h"
#include "mdss_mdp_debug.h"
#include "mdss_smmu.h"

#include "mdss_mdp_trace.h"

#define AXI_HALT_TIMEOUT_US	0x4000
#define AUTOSUSPEND_TIMEOUT_MS	200
#define DEFAULT_MDP_PIPE_WIDTH	2048
#define RES_1080p		(1088*1920)
#define RES_UHD			(3840*2160)

struct mdss_data_type *mdss_res;
static u32 mem_protect_sd_ctrl_id;

static int mdss_fb_mem_get_iommu_domain(void)
{
	return mdss_smmu_get_domain_id(MDSS_IOMMU_DOMAIN_UNSECURE);
}

struct msm_mdp_interface mdp5 = {
	.init_fnc = mdss_mdp_overlay_init,
	.fb_mem_get_iommu_domain = mdss_fb_mem_get_iommu_domain,
	.fb_stride = mdss_mdp_fb_stride,
	.check_dsi_status = mdss_check_dsi_ctrl_status,
	.get_format_params = mdss_mdp_get_format_params,
};

#define IB_QUOTA 2000000000
#define AB_QUOTA 2000000000

#define MAX_AXI_PORT_COUNT 3

#define MEM_PROTECT_SD_CTRL 0xF
#define MEM_PROTECT_SD_CTRL_FLAT 0x14

static DEFINE_SPINLOCK(mdp_lock);
static DEFINE_SPINLOCK(mdss_mdp_intr_lock);
static DEFINE_MUTEX(mdp_clk_lock);
static DEFINE_MUTEX(mdp_iommu_ref_cnt_lock);
static DEFINE_MUTEX(mdp_fs_idle_pc_lock);

static struct mdss_panel_intf pan_types[] = {
	{"dsi", MDSS_PANEL_INTF_DSI},
	{"edp", MDSS_PANEL_INTF_EDP},
	{"hdmi", MDSS_PANEL_INTF_HDMI},
};
static char mdss_mdp_panel[MDSS_MAX_PANEL_LEN];

struct mdss_hw mdss_mdp_hw = {
	.hw_ndx = MDSS_HW_MDP,
	.ptr = NULL,
	.irq_handler = mdss_mdp_isr,
};

/* define for h/w block with external driver */
struct mdss_hw mdss_misc_hw = {
	.hw_ndx = MDSS_HW_MISC,
	.ptr = NULL,
	.irq_handler = NULL,
};

#ifdef CONFIG_QCOM_BUS_SCALING
#define MDP_REG_BUS_VECTOR_ENTRY(ab_val, ib_val)	\
	{						\
		.src = MSM_BUS_MASTER_AMPSS_M0,		\
		.dst = MSM_BUS_SLAVE_DISPLAY_CFG,	\
		.ab = (ab_val),				\
		.ib = (ib_val),				\
	}

#define BUS_VOTE_19_MHZ 153600000
#define BUS_VOTE_40_MHZ 320000000
#define BUS_VOTE_80_MHZ 640000000

static struct msm_bus_vectors mdp_reg_bus_vectors[] = {
	MDP_REG_BUS_VECTOR_ENTRY(0, 0),
	MDP_REG_BUS_VECTOR_ENTRY(0, BUS_VOTE_19_MHZ),
	MDP_REG_BUS_VECTOR_ENTRY(0, BUS_VOTE_40_MHZ),
	MDP_REG_BUS_VECTOR_ENTRY(0, BUS_VOTE_80_MHZ),
};
static struct msm_bus_paths mdp_reg_bus_usecases[ARRAY_SIZE(
		mdp_reg_bus_vectors)];
static struct msm_bus_scale_pdata mdp_reg_bus_scale_table = {
	.usecase = mdp_reg_bus_usecases,
	.num_usecases = ARRAY_SIZE(mdp_reg_bus_usecases),
	.name = "mdss_reg",
	.active_only = true,
};
#endif

u32 invalid_mdp107_wb_output_fmts[] = {
	MDP_XRGB_8888,
	MDP_RGBX_8888,
	MDP_BGRX_8888,
};

/*
 * struct intr_call - array of intr handlers
 * @func: intr handler
 * @arg: requested argument to the handler
 */
struct intr_callback {
	void (*func)(void *);
	void *arg;
};

/*
 * struct mdss_mdp_intr_reg - array of MDP intr register sets
 * @clr_off: offset to CLEAR reg
 * @en_off: offset to ENABLE reg
 * @status_off: offset to STATUS reg
 */
struct mdss_mdp_intr_reg {
	u32 clr_off;
	u32 en_off;
	u32 status_off;
};

/*
 * struct mdss_mdp_irq - maps each irq with i/f
 * @intr_type: type of interface
 * @intf_num: i/f the irq is associated with
 * @irq_mask: corresponding bit in the reg set
 * @reg_idx: which reg set to program
 */
struct mdss_mdp_irq {
	u32 intr_type;
	u32 intf_num;
	u32 irq_mask;
	u32 reg_idx;
};

static struct mdss_mdp_intr_reg mdp_intr_reg[] = {
	{ MDSS_MDP_REG_INTR_CLEAR, MDSS_MDP_REG_INTR_EN,
		MDSS_MDP_REG_INTR_STATUS },
	{ MDSS_MDP_REG_INTR2_CLEAR, MDSS_MDP_REG_INTR2_EN,
		MDSS_MDP_REG_INTR2_STATUS }
};

static struct mdss_mdp_irq mdp_irq_map[] =  {
	{ MDSS_MDP_IRQ_TYPE_INTF_UNDER_RUN, 1,
		MDSS_MDP_INTR_INTF_0_UNDERRUN, 0},
	{ MDSS_MDP_IRQ_TYPE_INTF_UNDER_RUN, 2,
		MDSS_MDP_INTR_INTF_1_UNDERRUN, 0},
	{ MDSS_MDP_IRQ_TYPE_INTF_UNDER_RUN, 3,
		MDSS_MDP_INTR_INTF_2_UNDERRUN, 0},
	{ MDSS_MDP_IRQ_TYPE_INTF_UNDER_RUN, 4,
		MDSS_MDP_INTR_INTF_3_UNDERRUN, 0},
	{ MDSS_MDP_IRQ_TYPE_INTF_VSYNC, 1,
		MDSS_MDP_INTR_INTF_0_VSYNC, 0},
	{ MDSS_MDP_IRQ_TYPE_INTF_VSYNC, 2,
		MDSS_MDP_INTR_INTF_1_VSYNC, 0},
	{ MDSS_MDP_IRQ_TYPE_INTF_VSYNC, 3,
		MDSS_MDP_INTR_INTF_2_VSYNC, 0},
	{ MDSS_MDP_IRQ_TYPE_INTF_VSYNC, 4,
		MDSS_MDP_INTR_INTF_3_VSYNC, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_COMP, 0,
		MDSS_MDP_INTR_PING_PONG_0_DONE, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_COMP, 1,
		MDSS_MDP_INTR_PING_PONG_1_DONE, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_COMP, 2,
		MDSS_MDP_INTR_PING_PONG_2_DONE, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_COMP, 3,
		MDSS_MDP_INTR_PING_PONG_3_DONE, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_RD_PTR, 0,
		MDSS_MDP_INTR_PING_PONG_0_RD_PTR, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_RD_PTR, 1,
		MDSS_MDP_INTR_PING_PONG_1_RD_PTR, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_RD_PTR, 2,
		MDSS_MDP_INTR_PING_PONG_2_RD_PTR, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_RD_PTR, 3,
		MDSS_MDP_INTR_PING_PONG_3_RD_PTR, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_WR_PTR, 0,
		MDSS_MDP_INTR_PING_PONG_0_WR_PTR, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_WR_PTR, 1,
		MDSS_MDP_INTR_PING_PONG_1_WR_PTR, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_WR_PTR, 2,
		MDSS_MDP_INTR_PING_PONG_2_WR_PTR, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_WR_PTR, 3,
		MDSS_MDP_INTR_PING_PONG_3_WR_PTR, 0},
	{ MDSS_MDP_IRQ_TYPE_WB_ROT_COMP, 0,
		MDSS_MDP_INTR_WB_0_DONE, 0},
	{ MDSS_MDP_IRQ_TYPE_WB_ROT_COMP, 1,
		MDSS_MDP_INTR_WB_1_DONE, 0},
	{ MDSS_MDP_IRQ_TYPE_WB_WFD_COMP, 0,
		MDSS_MDP_INTR_WB_2_DONE, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_AUTO_REF, 0,
		MDSS_MDP_INTR_PING_PONG_0_AUTOREFRESH_DONE, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_AUTO_REF, 1,
		MDSS_MDP_INTR_PING_PONG_1_AUTOREFRESH_DONE, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_AUTO_REF, 2,
		MDSS_MDP_INTR_PING_PONG_2_AUTOREFRESH_DONE, 0},
	{ MDSS_MDP_IRQ_TYPE_PING_PONG_AUTO_REF, 3,
		MDSS_MDP_INTR_PING_PONG_3_AUTOREFRESH_DONE, 0},
	{ MDSS_MDP_IRQ_TYPE_CWB_OVERFLOW, 2,
		MDSS_MDP_INTR2_PING_PONG_2_CWB_OVERFLOW, 1},
	{ MDSS_MDP_IRQ_TYPE_CWB_OVERFLOW, 3,
		MDSS_MDP_INTR2_PING_PONG_2_CWB_OVERFLOW, 1}
};

static struct intr_callback *mdp_intr_cb;

static void mdss_mdp_footswitch_ctrl(struct mdss_data_type *mdata, int on);
static int mdss_mdp_parse_dt(struct platform_device *pdev);
static int mdss_mdp_parse_dt_pipe(struct platform_device *pdev);
static int mdss_mdp_parse_dt_mixer(struct platform_device *pdev);
static int mdss_mdp_parse_dt_wb(struct platform_device *pdev);
static int mdss_mdp_parse_dt_ctl(struct platform_device *pdev);
static int mdss_mdp_parse_dt_video_intf(struct platform_device *pdev);
static int mdss_mdp_parse_dt_handler(struct platform_device *pdev,
				char *prop_name, u32 *offsets, int len);
static int mdss_mdp_parse_dt_prop_len(struct platform_device *pdev,
				char *prop_name);
static int mdss_mdp_parse_dt_smp(struct platform_device *pdev);
static int mdss_mdp_parse_dt_prefill(struct platform_device *pdev);
static int mdss_mdp_parse_dt_misc(struct platform_device *pdev);
static int mdss_mdp_parse_dt_ad_cfg(struct platform_device *pdev);
static int mdss_mdp_parse_dt_bus_scale(struct platform_device *pdev);
static int mdss_mdp_parse_dt_ppb_off(struct platform_device *pdev);
static int mdss_mdp_parse_dt_cdm(struct platform_device *pdev);
static int mdss_mdp_parse_dt_dsc(struct platform_device *pdev);

static inline u32 is_mdp_irq_enabled(void)
{
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	int i;

	for (i = 0; i < ARRAY_SIZE(mdp_intr_reg); i++)
		if (mdata->mdp_irq_mask[i] != 0)
			return 1;

	if (mdata->mdp_hist_irq_mask)
		return 1;

	if (mdata->mdp_intf_irq_mask)
		return 1;

	return 0;
}

u32 mdss_mdp_fb_stride(u32 fb_index, u32 xres, int bpp)
{
	/* The adreno GPU hardware requires that the pitch be aligned to
	 *  32 pixels for color buffers, so for the cases where the GPU
	 *  is writing directly to fb0, the framebuffer pitch
	 *  also needs to be 32 pixel aligned
	 */

	if (fb_index == 0)
		return ALIGN(xres, 32) * bpp;
	else
		return xres * bpp;
}

static void mdss_irq_mask(struct irq_data *data)
{
	struct mdss_data_type *mdata = irq_data_get_irq_chip_data(data);
	unsigned long irq_flags;

	if (!mdata)
		return;

	pr_debug("irq_domain_mask %lu\n", data->hwirq);

	if (data->hwirq < 32) {
		spin_lock_irqsave(&mdp_lock, irq_flags);
		mdata->mdss_util->disable_irq(&mdss_misc_hw);
		spin_unlock_irqrestore(&mdp_lock, irq_flags);
	}
}

static void mdss_irq_unmask(struct irq_data *data)
{
	struct mdss_data_type *mdata = irq_data_get_irq_chip_data(data);
	unsigned long irq_flags;

	if (!mdata)
		return;

	pr_debug("irq_domain_unmask %lu\n", data->hwirq);

	if (data->hwirq < 32) {
		spin_lock_irqsave(&mdp_lock, irq_flags);
		mdata->mdss_util->enable_irq(&mdss_misc_hw);
		spin_unlock_irqrestore(&mdp_lock, irq_flags);
	}
}

static struct irq_chip mdss_irq_chip = {
	.name		= "mdss",
	.irq_mask	= mdss_irq_mask,
	.irq_unmask	= mdss_irq_unmask,
};

static int mdss_irq_domain_map(struct irq_domain *d,
		unsigned int virq, irq_hw_number_t hw)
{
	struct mdss_data_type *mdata = d->host_data;
	/* check here if virq is a valid interrupt line */
	irq_set_chip_and_handler(virq, &mdss_irq_chip, handle_level_irq);
	irq_set_chip_data(virq, mdata);
	return 0;
}

const struct irq_domain_ops mdss_irq_domain_ops = {
	.map = mdss_irq_domain_map,
	.xlate = irq_domain_xlate_onecell,
};

static irqreturn_t mdss_irq_handler(int irq, void *ptr)
{
	struct mdss_data_type *mdata = ptr;
	u32 intr;

	if (!mdata)
		return IRQ_NONE;
	else if (!mdss_get_irq_enable_state(&mdss_mdp_hw))
		return IRQ_HANDLED;

	intr = MDSS_REG_READ(mdata, MDSS_REG_HW_INTR_STATUS);

	mdss_mdp_hw.irq_info->irq_buzy = true;

	if (intr & MDSS_INTR_MDP) {
		spin_lock(&mdp_lock);
		mdata->mdss_util->irq_dispatch(MDSS_HW_MDP, irq, ptr);
		spin_unlock(&mdp_lock);
		intr &= ~MDSS_INTR_MDP;
	}

	if (intr & MDSS_INTR_DSI0) {
		mdata->mdss_util->irq_dispatch(MDSS_HW_DSI0, irq, ptr);
		intr &= ~MDSS_INTR_DSI0;
	}

	if (intr & MDSS_INTR_DSI1) {
		mdata->mdss_util->irq_dispatch(MDSS_HW_DSI1, irq, ptr);
		intr &= ~MDSS_INTR_DSI1;
	}

	if (intr & MDSS_INTR_EDP) {
		mdata->mdss_util->irq_dispatch(MDSS_HW_EDP, irq, ptr);
		intr &= ~MDSS_INTR_EDP;
	}

	if (intr & MDSS_INTR_HDMI) {
		mdata->mdss_util->irq_dispatch(MDSS_HW_HDMI, irq, ptr);
		intr &= ~MDSS_INTR_HDMI;
	}

	/* route misc. interrupts to external drivers */
	while (intr) {
		irq_hw_number_t hwirq = fls(intr) - 1;

		generic_handle_irq(irq_find_mapping(
				mdata->irq_domain, hwirq));
		intr &= ~(1 << hwirq);
	}

	mdss_mdp_hw.irq_info->irq_buzy = false;

	return IRQ_HANDLED;
}

#ifdef CONFIG_QCOM_BUS_SCALING
static int mdss_mdp_bus_scale_register(struct mdss_data_type *mdata)
{
	struct msm_bus_scale_pdata *reg_bus_pdata;
	int i, rc;

	if (!mdata->bus_hdl) {
		rc = mdss_mdp_parse_dt_bus_scale(mdata->pdev);
		if (rc) {
			pr_err("Error in device tree : bus scale\n");
			return rc;
		}

		mdata->bus_hdl =
			msm_bus_scale_register_client(mdata->bus_scale_table);
		if (!mdata->bus_hdl) {
			pr_err("bus_client register failed\n");
			return -EINVAL;
		}

		pr_debug("register bus_hdl=%x\n", mdata->bus_hdl);
	}

	if (!mdata->reg_bus_scale_table) {
		reg_bus_pdata = &mdp_reg_bus_scale_table;
		for (i = 0; i < reg_bus_pdata->num_usecases; i++) {
			mdp_reg_bus_usecases[i].num_paths = 1;
			mdp_reg_bus_usecases[i].vectors =
				&mdp_reg_bus_vectors[i];
		}
		mdata->reg_bus_scale_table = reg_bus_pdata;
	}

	if (!mdata->reg_bus_hdl) {
		mdata->reg_bus_hdl =
			msm_bus_scale_register_client(
			      mdata->reg_bus_scale_table);
		if (!mdata->reg_bus_hdl)
			/* Continue without reg_bus scaling */
			pr_warn("reg_bus_client register failed\n");
		else
			pr_debug("register reg_bus_hdl=%x\n",
					mdata->reg_bus_hdl);
	}

	if (mdata->hw_rt_bus_scale_table && !mdata->hw_rt_bus_hdl) {
		mdata->hw_rt_bus_hdl =
			msm_bus_scale_register_client(
			      mdata->hw_rt_bus_scale_table);
		if (!mdata->hw_rt_bus_hdl)
			/* Continue without reg_bus scaling */
			pr_warn("hw_rt_bus client register failed\n");
		else
			pr_debug("register hw_rt_bus=%x\n",
					mdata->hw_rt_bus_hdl);
	}

	/*
	 * Following call will not result in actual vote rather update the
	 * current index and ab/ib value. When continuous splash is enabled,
	 * actual vote will happen when splash handoff is done.
	 */
	return mdss_bus_scale_set_quota(MDSS_MDP_RT, AB_QUOTA, IB_QUOTA);
}

static void mdss_mdp_bus_scale_unregister(struct mdss_data_type *mdata)
{
	pr_debug("unregister bus_hdl=%x\n", mdata->bus_hdl);

	if (mdata->bus_hdl)
		msm_bus_scale_unregister_client(mdata->bus_hdl);

	pr_debug("unregister reg_bus_hdl=%x\n", mdata->reg_bus_hdl);

	if (mdata->reg_bus_hdl) {
		msm_bus_scale_unregister_client(mdata->reg_bus_hdl);
		mdata->reg_bus_hdl = 0;
	}

	if (mdata->hw_rt_bus_hdl) {
		msm_bus_scale_unregister_client(mdata->hw_rt_bus_hdl);
		mdata->hw_rt_bus_hdl = 0;
	}
}

/*
 * Caller needs to hold mdata->bus_lock lock before calling this function.
 */
static int mdss_mdp_bus_scale_set_quota(u64 ab_quota_rt, u64 ab_quota_nrt,
		u64 ib_quota_rt, u64 ib_quota_nrt)
{
	int new_uc_idx;
	u64 ab_quota[MAX_AXI_PORT_COUNT] = {0, 0};
	u64 ib_quota[MAX_AXI_PORT_COUNT] = {0, 0};
	int rc;

	if (mdss_res->bus_hdl < 1) {
		pr_err("invalid bus handle %d\n", mdss_res->bus_hdl);
		return -EINVAL;
	}

	if (!ab_quota_rt && !ab_quota_nrt && !ib_quota_rt && !ib_quota_nrt)  {
		new_uc_idx = 0;
	} else {
		int i;
		struct msm_bus_vectors *vect = NULL;
		struct msm_bus_scale_pdata *bw_table =
			mdss_res->bus_scale_table;
		u32 nrt_axi_port_cnt = mdss_res->nrt_axi_port_cnt;
		u32 total_axi_port_cnt = mdss_res->axi_port_cnt;
		u32 rt_axi_port_cnt = total_axi_port_cnt - nrt_axi_port_cnt;
		int match_cnt = 0;

		if (!bw_table || !total_axi_port_cnt ||
		    total_axi_port_cnt > MAX_AXI_PORT_COUNT) {
			pr_err("invalid input\n");
			return -EINVAL;
		}

		if (mdss_res->bus_channels) {
			ib_quota_rt = div_u64(ib_quota_rt,
						mdss_res->bus_channels);
			ib_quota_nrt = div_u64(ib_quota_nrt,
						mdss_res->bus_channels);
		}

		if (mdss_res->has_fixed_qos_arbiter_enabled ||
			nrt_axi_port_cnt) {

			ab_quota_rt = div_u64(ab_quota_rt, rt_axi_port_cnt);
			ab_quota_nrt = div_u64(ab_quota_nrt, nrt_axi_port_cnt);

			for (i = 0; i < total_axi_port_cnt; i++) {
				if (i < rt_axi_port_cnt) {
					ab_quota[i] = ab_quota_rt;
					ib_quota[i] = ib_quota_rt;
				} else {
					ab_quota[i] = ab_quota_nrt;
					ib_quota[i] = ib_quota_nrt;
				}
			}
		} else {
			ab_quota[0] = div_u64(ab_quota_rt + ab_quota_nrt,
					total_axi_port_cnt);
			ib_quota[0] = ib_quota_rt + ib_quota_nrt;

			for (i = 1; i < total_axi_port_cnt; i++) {
				ab_quota[i] = ab_quota[0];
				ib_quota[i] = ib_quota[0];
			}
		}

		for (i = 0; i < total_axi_port_cnt; i++) {
			vect = &bw_table->usecase
				[mdss_res->curr_bw_uc_idx].vectors[i];
			/* avoid performing updates for small changes */
			if ((ab_quota[i] == vect->ab) &&
				(ib_quota[i] == vect->ib))
				match_cnt++;
		}

		if (match_cnt == total_axi_port_cnt) {
			pr_debug("skip BW vote\n");
			return 0;
		}

		new_uc_idx = (mdss_res->curr_bw_uc_idx %
			(bw_table->num_usecases - 1)) + 1;

		for (i = 0; i < total_axi_port_cnt; i++) {
			vect = &bw_table->usecase[new_uc_idx].vectors[i];
			vect->ab = ab_quota[i];
			vect->ib = ib_quota[i];

			pr_debug("uc_idx=%d %s path idx=%d ab=%llu ib=%llu\n",
				new_uc_idx, (i < rt_axi_port_cnt) ? "rt" : "nrt"
				, i, vect->ab, vect->ib);
		}
	}
	mdss_res->curr_bw_uc_idx = new_uc_idx;
	mdss_res->ao_bw_uc_idx = new_uc_idx;

	if ((mdss_res->bus_ref_cnt == 0) && mdss_res->curr_bw_uc_idx) {
		rc = 0;
	} else { /* vote BW if bus_bw_cnt > 0 or uc_idx is zero */
		ATRACE_BEGIN("msm_bus_scale_req");
		rc = msm_bus_scale_client_update_request(mdss_res->bus_hdl,
			new_uc_idx);
		ATRACE_END("msm_bus_scale_req");
	}
	return rc;
}

struct reg_bus_client *mdss_reg_bus_vote_client_create(char *client_name)
{
	struct reg_bus_client *client;
	static u32 id;

	if (client_name == NULL) {
		pr_err("client name is null\n");
		return ERR_PTR(-EINVAL);
	}

	client = kcalloc(1, sizeof(struct reg_bus_client), GFP_KERNEL);
	if (!client)
		return ERR_PTR(-ENOMEM);

	mutex_lock(&mdss_res->reg_bus_lock);
	strlcpy(client->name, client_name, MAX_CLIENT_NAME_LEN);
	client->usecase_ndx = VOTE_INDEX_DISABLE;
	client->id = id;
	pr_debug("bus vote client %s created:%pK id :%d\n", client_name,
		client, id);
	id++;
	list_add(&client->list, &mdss_res->reg_bus_clist);
	mutex_unlock(&mdss_res->reg_bus_lock);

	return client;
}

void mdss_reg_bus_vote_client_destroy(struct reg_bus_client *client)
{
	if (!client) {
		pr_err("reg bus vote: invalid client handle\n");
	} else {
		pr_debug("bus vote client %s destroyed:%pK id:%u\n",
			client->name, client, client->id);
		mutex_lock(&mdss_res->reg_bus_lock);
		list_del_init(&client->list);
		mutex_unlock(&mdss_res->reg_bus_lock);
		kfree(client);
	}
}

int mdss_update_reg_bus_vote(struct reg_bus_client *bus_client, u32 usecase_ndx)
{
	int ret = 0;
	bool changed = false;
	u32 max_usecase_ndx = VOTE_INDEX_DISABLE;
	struct reg_bus_client *client, *temp_client;

	if (!mdss_res || !mdss_res->reg_bus_hdl || !bus_client)
		return 0;

	mutex_lock(&mdss_res->reg_bus_lock);
	bus_client->usecase_ndx = usecase_ndx;
	list_for_each_entry_safe(client, temp_client, &mdss_res->reg_bus_clist,
		list) {

		if (client->usecase_ndx < VOTE_INDEX_MAX &&
		    client->usecase_ndx > max_usecase_ndx)
			max_usecase_ndx = client->usecase_ndx;
	}

	if (mdss_res->reg_bus_usecase_ndx != max_usecase_ndx) {
		changed = true;
		mdss_res->reg_bus_usecase_ndx = max_usecase_ndx;
	}

	pr_debug("%pS: changed=%d current idx=%d request client %s id:%u idx:%d\n",
		__builtin_return_address(0), changed, max_usecase_ndx,
		bus_client->name, bus_client->id, usecase_ndx);
	MDSS_XLOG(changed, max_usecase_ndx, bus_client->id, usecase_ndx);
	if (changed)
		ret = msm_bus_scale_client_update_request(mdss_res->reg_bus_hdl,
			max_usecase_ndx);

	mutex_unlock(&mdss_res->reg_bus_lock);
	return ret;
}

int mdss_bus_scale_set_quota(int client, u64 ab_quota, u64 ib_quota)
{
	int rc = 0;
	int i;
	u64 total_ab_rt = 0, total_ib_rt = 0;
	u64 total_ab_nrt = 0, total_ib_nrt = 0;

	mutex_lock(&mdss_res->bus_lock);

	mdss_res->ab[client] = ab_quota;
	mdss_res->ib[client] = ib_quota;
	trace_mdp_perf_update_bus(client, ab_quota, ib_quota);

	for (i = 0; i < MDSS_MAX_BUS_CLIENTS; i++) {
		if (i == MDSS_MDP_NRT) {
			total_ab_nrt = mdss_res->ab[i];
			total_ib_nrt = mdss_res->ib[i];
		} else {
			total_ab_rt += mdss_res->ab[i];
			total_ib_rt = max(total_ib_rt, mdss_res->ib[i]);
		}
	}

	rc = mdss_mdp_bus_scale_set_quota(total_ab_rt, total_ab_nrt,
			total_ib_rt, total_ib_nrt);

	mutex_unlock(&mdss_res->bus_lock);

	return rc;
}
#else
static int mdss_mdp_bus_scale_register(struct mdss_data_type *mdata)
{
	return 0;
}

static void mdss_mdp_bus_scale_unregister(struct mdss_data_type *mdata)
{
}

int mdss_bus_scale_set_quota(int client, u64 ab_quota, u64 ib_quota)
{
	pr_debug("No bus scaling! client=%d ab=%llu ib=%llu\n",
			client, ab_quota, ib_quota);

	return 0;
}

struct reg_bus_client *mdss_reg_bus_vote_client_create(char *client_name)
{
	return NULL;
}

void mdss_reg_bus_vote_client_destroy(struct reg_bus_client *client)
{
}

int mdss_update_reg_bus_vote(struct reg_bus_client *bus_client, u32 usecase_ndx)
{
	pr_debug("%pS: No reg scaling! usecase=%u\n",
			__builtin_return_address(0), usecase_ndx);

	return 0;
}
#endif


static int mdss_mdp_intr2index(u32 intr_type, u32 intf_num)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(mdp_irq_map); i++) {
		if (intr_type == mdp_irq_map[i].intr_type &&
			intf_num == mdp_irq_map[i].intf_num)
			return i;
	}
	return -EINVAL;
}

u32 mdss_mdp_get_irq_mask(u32 intr_type, u32 intf_num)
{
	int idx = mdss_mdp_intr2index(intr_type, intf_num);

	return (idx < 0) ? 0 : mdp_irq_map[idx].irq_mask;
}

void mdss_mdp_enable_hw_irq(struct mdss_data_type *mdata)
{
	mdata->mdss_util->enable_irq(&mdss_mdp_hw);
}

void mdss_mdp_disable_hw_irq(struct mdss_data_type *mdata)
{
	if (!is_mdp_irq_enabled())
		mdata->mdss_util->disable_irq(&mdss_mdp_hw);
}

/* function assumes that mdp is clocked to access hw registers */
void mdss_mdp_irq_clear(struct mdss_data_type *mdata,
		u32 intr_type, u32 intf_num)
{
	unsigned long irq_flags;
	int irq_idx;
	struct mdss_mdp_intr_reg reg;
	struct mdss_mdp_irq irq;

	irq_idx = mdss_mdp_intr2index(intr_type, intf_num);
	if (irq_idx < 0) {
		pr_err("invalid irq request\n");
		return;
	}

	irq = mdp_irq_map[irq_idx];
	reg = mdp_intr_reg[irq.reg_idx];

	pr_debug("clearing mdp irq mask=%x\n", irq.irq_mask);
	spin_lock_irqsave(&mdp_lock, irq_flags);
	writel_relaxed(irq.irq_mask, mdata->mdp_base + reg.clr_off);
	spin_unlock_irqrestore(&mdp_lock, irq_flags);
}

int mdss_mdp_irq_enable(u32 intr_type, u32 intf_num)
{
	int irq_idx;
	unsigned long irq_flags;
	int ret = 0;
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	struct mdss_mdp_intr_reg reg;
	struct mdss_mdp_irq irq;

	irq_idx = mdss_mdp_intr2index(intr_type, intf_num);
	if (irq_idx < 0) {
		pr_err("invalid irq request\n");
		return -EINVAL;
	}

	irq = mdp_irq_map[irq_idx];
	reg = mdp_intr_reg[irq.reg_idx];

	spin_lock_irqsave(&mdp_lock, irq_flags);
	if (mdata->mdp_irq_mask[irq.reg_idx] & irq.irq_mask) {
		pr_warn("MDSS MDP IRQ-0x%x is already set, mask=%x\n",
			irq.irq_mask, mdata->mdp_irq_mask[irq.reg_idx]);
		ret = -EBUSY;
	} else {
		pr_debug("MDP IRQ mask old=%x new=%x\n",
				mdata->mdp_irq_mask[irq.reg_idx], irq.irq_mask);
		mdata->mdp_irq_mask[irq.reg_idx] |= irq.irq_mask;
		writel_relaxed(irq.irq_mask, mdata->mdp_base + reg.clr_off);
		writel_relaxed(mdata->mdp_irq_mask[irq.reg_idx],
				mdata->mdp_base + reg.en_off);
		mdata->mdss_util->enable_irq(&mdss_mdp_hw);
	}
	spin_unlock_irqrestore(&mdp_lock, irq_flags);

	return ret;
}
int mdss_mdp_hist_irq_enable(u32 irq)
{
	int ret = 0;
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();

	if (mdata->mdp_hist_irq_mask & irq) {
		pr_warn("MDSS MDP Hist IRQ-0x%x is already set, mask=%x\n",
				irq, mdata->mdp_hist_irq_mask);
		ret = -EBUSY;
	} else {
		pr_debug("mask old=%x new=%x\n",
				mdata->mdp_hist_irq_mask, irq);
		mdata->mdp_hist_irq_mask |= irq;
		writel_relaxed(irq, mdata->mdp_base +
			MDSS_MDP_REG_HIST_INTR_CLEAR);
		writel_relaxed(mdata->mdp_hist_irq_mask, mdata->mdp_base +
			MDSS_MDP_REG_HIST_INTR_EN);
		mdata->mdss_util->enable_irq(&mdss_mdp_hw);
	}

	return ret;
}

void mdss_mdp_irq_disable(u32 intr_type, u32 intf_num)
{
	int irq_idx;
	unsigned long irq_flags;
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	struct mdss_mdp_intr_reg reg;
	struct mdss_mdp_irq irq;

	irq_idx = mdss_mdp_intr2index(intr_type, intf_num);
	if (irq_idx < 0) {
		pr_err("invalid irq request\n");
		return;
	}

	irq =  mdp_irq_map[irq_idx];
	reg = mdp_intr_reg[irq.reg_idx];

	spin_lock_irqsave(&mdp_lock, irq_flags);
	if (!(mdata->mdp_irq_mask[irq.reg_idx] & irq.irq_mask)) {
		pr_warn("MDSS MDP IRQ-%x is NOT set, mask=%x\n",
				irq.irq_mask, mdata->mdp_irq_mask[irq.reg_idx]);
	} else {
		mdata->mdp_irq_mask[irq.reg_idx] &= ~irq.irq_mask;
		writel_relaxed(mdata->mdp_irq_mask[irq.reg_idx],
				mdata->mdp_base + reg.en_off);
		if (!is_mdp_irq_enabled())
			mdata->mdss_util->disable_irq(&mdss_mdp_hw);
	}
	spin_unlock_irqrestore(&mdp_lock, irq_flags);
}

/* This function is used to check and clear the status of MDP interrupts */
void mdss_mdp_intr_check_and_clear(u32 intr_type, u32 intf_num)
{
	u32 status;
	int irq_idx;
	unsigned long irq_flags;
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	struct mdss_mdp_intr_reg reg;
	struct mdss_mdp_irq irq;

	irq_idx = mdss_mdp_intr2index(intr_type, intf_num);
	if (irq_idx < 0) {
		pr_err("invalid irq request\n");
		return;
	}

	irq =  mdp_irq_map[irq_idx];
	reg = mdp_intr_reg[irq.reg_idx];

	spin_lock_irqsave(&mdp_lock, irq_flags);
	status = irq.irq_mask & readl_relaxed(mdata->mdp_base +
			reg.status_off);
	if (status) {
		pr_debug("clearing irq: intr_type:%d, intf_num:%d\n",
				intr_type, intf_num);
		writel_relaxed(irq.irq_mask, mdata->mdp_base + reg.clr_off);
	}
	spin_unlock_irqrestore(&mdp_lock, irq_flags);
}

void mdss_mdp_hist_irq_disable(u32 irq)
{
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();

	if (!(mdata->mdp_hist_irq_mask & irq)) {
		pr_warn("MDSS MDP IRQ-%x is NOT set, mask=%x\n",
				irq, mdata->mdp_hist_irq_mask);
	} else {
		mdata->mdp_hist_irq_mask &= ~irq;
		writel_relaxed(mdata->mdp_hist_irq_mask, mdata->mdp_base +
			MDSS_MDP_REG_HIST_INTR_EN);
		if (!is_mdp_irq_enabled())
			mdata->mdss_util->disable_irq(&mdss_mdp_hw);
	}
}

/**
 * mdss_mdp_irq_disable_nosync() - disable mdp irq
 * @intr_type:	mdp interface type
 * @intf_num:	mdp interface num
 *
 * This function is called from interrupt context
 * mdp_lock is already held at up stream (mdss_irq_handler)
 * therefore spin_lock(&mdp_lock) is not allowed here
 *
 */
void mdss_mdp_irq_disable_nosync(u32 intr_type, u32 intf_num)
{
	int irq_idx;
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	struct mdss_mdp_intr_reg reg;
	struct mdss_mdp_irq irq;

	irq_idx = mdss_mdp_intr2index(intr_type, intf_num);
	if (irq_idx < 0) {
		pr_err("invalid irq request\n");
		return;
	}

	irq = mdp_irq_map[irq_idx];
	reg = mdp_intr_reg[irq.reg_idx];

	if (!(mdata->mdp_irq_mask[irq.reg_idx] & irq.irq_mask)) {
		pr_warn("MDSS MDP IRQ-%x is NOT set, mask=%x\n",
				irq.irq_mask, mdata->mdp_irq_mask[irq.reg_idx]);
	} else {
		mdata->mdp_irq_mask[irq.reg_idx] &= ~irq.irq_mask;
		writel_relaxed(mdata->mdp_irq_mask[irq.reg_idx],
				mdata->mdp_base + reg.en_off);
		if (!is_mdp_irq_enabled())
			mdata->mdss_util->disable_irq_nosync(&mdss_mdp_hw);
	}
}

int mdss_mdp_set_intr_callback(u32 intr_type, u32 intf_num,
		       void (*fnc_ptr)(void *), void *arg)
{
	unsigned long flags;
	int index;

	index = mdss_mdp_intr2index(intr_type, intf_num);
	if (index < 0) {
		pr_warn("invalid intr type=%u intf_numf_num=%u\n",
				intr_type, intf_num);
		return -EINVAL;
	}

	spin_lock_irqsave(&mdss_mdp_intr_lock, flags);
	WARN(mdp_intr_cb[index].func && fnc_ptr,
			"replacing current intr callback for ndx=%d\n", index);
	mdp_intr_cb[index].func = fnc_ptr;
	mdp_intr_cb[index].arg = arg;
	spin_unlock_irqrestore(&mdss_mdp_intr_lock, flags);

	return 0;
}

int mdss_mdp_set_intr_callback_nosync(u32 intr_type, u32 intf_num,
		       void	  (*fnc_ptr)(void *), void *arg)
{
	int index;

	index = mdss_mdp_intr2index(intr_type, intf_num);
	if (index < 0) {
		pr_warn("invalid intr Typee=%u intf_num=%u\n",
				intr_type, intf_num);
		return -EINVAL;
	}

	WARN(mdp_intr_cb[index].func && fnc_ptr,
			"replacing current intr callbackack for ndx=%d\n",
			index);
	mdp_intr_cb[index].func = fnc_ptr;
	mdp_intr_cb[index].arg = arg;

	return 0;
}

static inline void mdss_mdp_intr_done(int index)
{
	void (*fnc)(void *);
	void *arg;

	spin_lock(&mdss_mdp_intr_lock);
	fnc = mdp_intr_cb[index].func;
	arg = mdp_intr_cb[index].arg;
	spin_unlock(&mdss_mdp_intr_lock);
	if (fnc)
		fnc(arg);
}

irqreturn_t mdss_mdp_isr(int irq, void *ptr)
{
	struct mdss_data_type *mdata = ptr;
	u32 isr, mask, hist_isr, hist_mask;
	int i, j;

	if (!mdata->clk_ena)
		return IRQ_HANDLED;

	for (i = 0; i < ARRAY_SIZE(mdp_intr_reg); i++) {
		struct mdss_mdp_intr_reg reg = mdp_intr_reg[i];

		isr = readl_relaxed(mdata->mdp_base + reg.status_off);
		if (isr == 0)
			continue;

		mask = readl_relaxed(mdata->mdp_base + reg.en_off);
		writel_relaxed(isr, mdata->mdp_base + reg.clr_off);

		pr_debug("%s: reg:%d isr=%x mask=%x\n",
				__func__, i+1, isr, mask);

		isr &= mask;
		if (isr == 0)
			continue;

		for (j = 0; j < ARRAY_SIZE(mdp_irq_map); j++)
			if (mdp_irq_map[j].reg_idx == i &&
					(isr & mdp_irq_map[j].irq_mask))
				mdss_mdp_intr_done(j);
		if (!i) {
			if (isr & MDSS_MDP_INTR_PING_PONG_0_DONE)
				mdss_misr_crc_collect(mdata, DISPLAY_MISR_DSI0,
						      false);

			if (isr & MDSS_MDP_INTR_PING_PONG_1_DONE)
				mdss_misr_crc_collect(mdata, DISPLAY_MISR_DSI1,
						      false);

			if (isr & MDSS_MDP_INTR_INTF_0_VSYNC)
				mdss_misr_crc_collect(mdata, DISPLAY_MISR_EDP,
						      true);

			if (isr & MDSS_MDP_INTR_INTF_1_VSYNC)
				mdss_misr_crc_collect(mdata, DISPLAY_MISR_DSI0,
						      true);

			if (isr & MDSS_MDP_INTR_INTF_2_VSYNC)
				mdss_misr_crc_collect(mdata, DISPLAY_MISR_DSI1,
						      true);

			if (isr & MDSS_MDP_INTR_INTF_3_VSYNC)
				mdss_misr_crc_collect(mdata, DISPLAY_MISR_HDMI,
						      true);

			if (isr & MDSS_MDP_INTR_WB_0_DONE)
				mdss_misr_crc_collect(mdata, DISPLAY_MISR_MDP,
						      true);

			if (isr & MDSS_MDP_INTR_WB_1_DONE)
				mdss_misr_crc_collect(mdata, DISPLAY_MISR_MDP,
						      true);

			if (isr &  MDSS_MDP_INTR_WB_2_DONE)
				mdss_misr_crc_collect(mdata, DISPLAY_MISR_MDP,
						      true);
		}
	}

	hist_isr = readl_relaxed(mdata->mdp_base +
			MDSS_MDP_REG_HIST_INTR_STATUS);
	if (hist_isr != 0) {
		hist_mask = readl_relaxed(mdata->mdp_base +
				MDSS_MDP_REG_HIST_INTR_EN);
		writel_relaxed(hist_isr, mdata->mdp_base +
				MDSS_MDP_REG_HIST_INTR_CLEAR);
		hist_isr &= hist_mask;
		if (hist_isr != 0)
			mdss_mdp_hist_intr_done(hist_isr);
	}

	mdss_mdp_video_isr(mdata->video_intf, mdata->nintf);
	return IRQ_HANDLED;
}

static int mdss_mdp_clk_update(u32 clk_idx, u32 enable)
{
	int ret = -ENODEV;
	struct clk *clk = mdss_mdp_get_clk(clk_idx);

	if (clk) {
		pr_debug("clk=%d en=%d\n", clk_idx, enable);
		if (enable) {
			if (clk_idx == MDSS_CLK_MDP_VSYNC)
				clk_set_rate(clk, 19200000);
			ret = clk_prepare_enable(clk);
		} else {
			clk_disable_unprepare(clk);
			ret = 0;
		}
	}
	return ret;
}

int mdss_mdp_vsync_clk_enable(int enable, bool locked)
{
	int ret = 0;

	pr_debug("clk enable=%d\n", enable);

	if (!locked)
		mutex_lock(&mdp_clk_lock);

	if (mdss_res->vsync_ena != enable) {
		mdss_res->vsync_ena = enable;
		ret = mdss_mdp_clk_update(MDSS_CLK_MDP_VSYNC, enable);
	}

	if (!locked)
		mutex_unlock(&mdp_clk_lock);
	return ret;
}

void mdss_mdp_set_clk_rate(unsigned long rate)
{
	struct mdss_data_type *mdata = mdss_res;
	unsigned long clk_rate;
	struct clk *clk = mdss_mdp_get_clk(MDSS_CLK_MDP_CORE);
	unsigned long min_clk_rate;

	min_clk_rate = max(rate, mdata->perf_tune.min_mdp_clk);

	if (clk) {
		mutex_lock(&mdp_clk_lock);
		if (min_clk_rate < mdata->max_mdp_clk_rate)
			clk_rate = clk_round_rate(clk, min_clk_rate);
		else
			clk_rate = mdata->max_mdp_clk_rate;
		if (IS_ERR_VALUE(clk_rate)) {
			pr_err("unable to round rate err=%ld\n", clk_rate);
		} else if (clk_rate != clk_get_rate(clk)) {
			if (IS_ERR_VALUE((unsigned long)
					 clk_set_rate(clk, clk_rate)))
				pr_err("clk_set_rate failed\n");
			else
				pr_debug("mdp clk rate=%lu\n", clk_rate);
		}
		mutex_unlock(&mdp_clk_lock);
	} else {
		pr_err("mdp src clk not setup properly\n");
	}
}

unsigned long mdss_mdp_get_clk_rate(u32 clk_idx, bool locked)
{
	unsigned long clk_rate = 0;
	struct clk *clk = mdss_mdp_get_clk(clk_idx);

	if (clk) {
		if (!locked)
			mutex_lock(&mdp_clk_lock);

		clk_rate = clk_get_rate(clk);

		if (!locked)
			mutex_unlock(&mdp_clk_lock);
	}

	return clk_rate;
}

/**
 * mdss_bus_rt_bw_vote() -- place bus bandwidth request
 * @enable: value of enable or disable
 *
 * hw_rt table has two entries, 0 and Min Vote (1Mhz)
 * while attaching SMMU and for few TZ operations which
 * happen at very early stage, we will request Min Vote
 * thru this handle.
 *
 */
static int mdss_bus_rt_bw_vote(bool enable)
{
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	int rc = 0;
	bool changed = false;

	if (!mdata->hw_rt_bus_hdl || mdata->handoff_pending)
		return 0;

	if (enable) {
		if (mdata->hw_rt_bus_ref_cnt == 0)
			changed = true;
		mdata->hw_rt_bus_ref_cnt++;
	} else {
		if (mdata->hw_rt_bus_ref_cnt != 0) {
			mdata->hw_rt_bus_ref_cnt--;
			if (mdata->hw_rt_bus_ref_cnt == 0)
				changed = true;
		} else {
			pr_warn("%s: bus bw votes are not balanced\n",
				__func__);
		}
	}

	pr_debug("%pS: task:%s bw_cnt=%d changed=%d enable=%d\n",
		__builtin_return_address(0), current->group_leader->comm,
		mdata->hw_rt_bus_ref_cnt, changed, enable);

	if (changed) {
		rc = msm_bus_scale_client_update_request(mdata->hw_rt_bus_hdl,
							 enable ? 1 : 0);
		if (rc)
			pr_err("%s: Bus bandwidth vote failed\n", __func__);
	}

	return rc;
}

/**
 * __mdss_mdp_reg_access_clk_enable - Enable minimum MDSS clocks required
 * for register access
 */
static inline void __mdss_mdp_reg_access_clk_enable(
		struct mdss_data_type *mdata, bool enable)
{
	if (enable) {
		mdss_update_reg_bus_vote(mdata->reg_bus_clt,
				VOTE_INDEX_LOW);
		mdss_bus_rt_bw_vote(true);
		mdss_mdp_clk_update(MDSS_CLK_AHB, 1);
		mdss_mdp_clk_update(MDSS_CLK_AXI, 1);
		mdss_mdp_clk_update(MDSS_CLK_MDP_CORE, 1);
	} else {
		mdss_mdp_clk_update(MDSS_CLK_MDP_CORE, 0);
		mdss_mdp_clk_update(MDSS_CLK_AXI, 0);
		mdss_mdp_clk_update(MDSS_CLK_AHB, 0);
		mdss_bus_rt_bw_vote(false);
		mdss_update_reg_bus_vote(mdata->reg_bus_clt,
				VOTE_INDEX_DISABLE);
	}
}

int __mdss_mdp_vbif_halt(struct mdss_data_type *mdata, bool is_nrt)
{
	int rc = 0;
	void __iomem *base;
	u32 halt_ack_mask = BIT(0), status;

	/* if not real time vbif */
	if (is_nrt)
		base = mdata->vbif_nrt_io.base;
	else
		base = mdata->vbif_io.base;

	if (!base) {
		/* some targets might not have a nrt port */
		goto vbif_done;
	}

	/* force vbif clock on */
	MDSS_VBIF_WRITE(mdata, MMSS_VBIF_CLKON, 1, is_nrt);

	/* request halt */
	MDSS_VBIF_WRITE(mdata, MMSS_VBIF_AXI_HALT_CTRL0, 1, is_nrt);

	rc = readl_poll_timeout(base +
			MMSS_VBIF_AXI_HALT_CTRL1, status, (status &
				halt_ack_mask),
			1000, AXI_HALT_TIMEOUT_US);
	if (rc == -ETIMEDOUT) {
		pr_err("VBIF axi is not halting. TIMEDOUT.\n");
		goto vbif_done;
	}

	pr_debug("VBIF axi is halted\n");

vbif_done:
	return rc;
}

/**
 * mdss_mdp_vbif_axi_halt() - Halt MDSS AXI ports
 * @mdata: pointer to the global mdss data structure.
 *
 * This function can be called during deep suspend, display off or for
 * debugging purposes. On success it should be assumed that AXI ports connected
 * to RT VBIF are in idle state and would not fetch any more data.
 */
static void mdss_mdp_vbif_axi_halt(struct mdss_data_type *mdata)
{
	__mdss_mdp_reg_access_clk_enable(mdata, true);

	/* real time ports */
	__mdss_mdp_vbif_halt(mdata, false);
	/* non-real time ports */
	__mdss_mdp_vbif_halt(mdata, true);

	__mdss_mdp_reg_access_clk_enable(mdata, false);
}

int mdss_iommu_ctrl(int enable)
{
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	int rc = 0;

	mutex_lock(&mdp_iommu_ref_cnt_lock);
	pr_debug("%pS: enable:%d ref_cnt:%d attach:%d hoff:%d\n",
		__builtin_return_address(0), enable, mdata->iommu_ref_cnt,
		mdata->iommu_attached, mdata->handoff_pending);

	if (enable) {
		/*
		 * delay iommu attach until continuous splash screen has
		 * finished handoff, as it may still be working with phys addr
		 */
		if (!mdata->iommu_attached && !mdata->handoff_pending) {
			mdss_bus_rt_bw_vote(true);
			rc = mdss_smmu_attach(mdata);
		}
		mdata->iommu_ref_cnt++;
	} else {
		if (mdata->iommu_ref_cnt) {
			mdata->iommu_ref_cnt--;
			if (mdata->iommu_ref_cnt == 0) {
				rc = mdss_smmu_detach(mdata);
				mdss_bus_rt_bw_vote(false);
			}
		} else {
			pr_err("unbalanced iommu ref\n");
		}
	}
	mutex_unlock(&mdp_iommu_ref_cnt_lock);

	if (IS_ERR_VALUE((unsigned long)rc))
		return rc;
	else
		return mdata->iommu_ref_cnt;
}

static void mdss_mdp_memory_retention_enter(void)
{
	struct clk *mdss_mdp_clk = NULL;
	struct clk *mdp_vote_clk = mdss_mdp_get_clk(MDSS_CLK_MDP_CORE);

	if (mdp_vote_clk) {
		mdss_mdp_clk = clk_get_parent(mdp_vote_clk);
		if (mdss_mdp_clk) {
			clk_set_flags(mdss_mdp_clk, CLKFLAG_RETAIN_MEM);
			clk_set_flags(mdss_mdp_clk, CLKFLAG_PERIPH_OFF_SET);
			clk_set_flags(mdss_mdp_clk, CLKFLAG_NORETAIN_PERIPH);
		}
	}
}

static void mdss_mdp_memory_retention_exit(void)
{
	struct clk *mdss_mdp_clk = NULL;
	struct clk *mdp_vote_clk = mdss_mdp_get_clk(MDSS_CLK_MDP_CORE);

	if (mdp_vote_clk) {
		mdss_mdp_clk = clk_get_parent(mdp_vote_clk);
		if (mdss_mdp_clk) {
			clk_set_flags(mdss_mdp_clk, CLKFLAG_RETAIN_MEM);
			clk_set_flags(mdss_mdp_clk, CLKFLAG_RETAIN_PERIPH);
			clk_set_flags(mdss_mdp_clk, CLKFLAG_PERIPH_OFF_CLEAR);
		}
	}
}

/**
 * mdss_mdp_idle_pc_restore() - Restore MDSS settings when exiting idle pc
 *
 * MDSS GDSC can be voted off during idle-screen usecase for MIPI DSI command
 * mode displays, referred to as MDSS idle power collapse. Upon subsequent
 * frame update, MDSS GDSC needs to turned back on and hw state needs to be
 * restored.
 */
static int mdss_mdp_idle_pc_restore(void)
{
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	int rc = 0;

	mutex_lock(&mdp_fs_idle_pc_lock);
	if (!mdata->idle_pc) {
		pr_debug("no idle pc, no need to restore\n");
		goto end;
	}

	pr_debug("called from %pS\n", __builtin_return_address(0));
	rc = mdss_iommu_ctrl(1);
	if (IS_ERR_VALUE((unsigned long)rc)) {
		pr_err("mdss iommu attach failed rc=%d\n", rc);
		goto end;
	}
	mdss_hw_init(mdata);
	mdss_iommu_ctrl(0);

	/**
	 * sleep 10 microseconds to make sure AD auto-reinitialization
	 * is done
	 */
	udelay(10);
	mdss_mdp_memory_retention_exit();

	mdss_mdp_ctl_restore(true);
	mdata->idle_pc = false;

end:
	mutex_unlock(&mdp_fs_idle_pc_lock);
	return rc;
}

/**
 * mdss_bus_bandwidth_ctrl() -- place bus bandwidth request
 * @enable:	value of enable or disable
 *
 * Function place bus bandwidth request to allocate saved bandwidth
 * if enabled or free bus bandwidth allocation if disabled.
 * Bus bandwidth is required by mdp.For dsi, it only requires to send
 * dcs coammnd. It returns error if bandwidth request fails.
 */
void mdss_bus_bandwidth_ctrl(int enable)
{
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	int changed = 0;

	mutex_lock(&mdata->bus_lock);
	if (enable) {
		if (mdata->bus_ref_cnt == 0)
			changed++;
		mdata->bus_ref_cnt++;
	} else {
		if (mdata->bus_ref_cnt) {
			mdata->bus_ref_cnt--;
			if (mdata->bus_ref_cnt == 0)
				changed++;
		} else {
			pr_err("Can not be turned off\n");
		}
	}

	pr_debug("%pS: task:%s bw_cnt=%d changed=%d enable=%d\n",
		__builtin_return_address(0), current->group_leader->comm,
		mdata->bus_ref_cnt, changed, enable);

	if (changed) {
		MDSS_XLOG(mdata->bus_ref_cnt, enable);

		if (!enable) {
			if (!mdata->handoff_pending) {
				msm_bus_scale_client_update_request(
						mdata->bus_hdl, 0);
				mdata->ao_bw_uc_idx = 0;
			}
			pm_runtime_mark_last_busy(&mdata->pdev->dev);
			pm_runtime_put_autosuspend(&mdata->pdev->dev);
		} else {
			pm_runtime_get_sync(&mdata->pdev->dev);
			msm_bus_scale_client_update_request(
				mdata->bus_hdl, mdata->curr_bw_uc_idx);
		}
	}

	mutex_unlock(&mdata->bus_lock);
}
EXPORT_SYMBOL(mdss_bus_bandwidth_ctrl);

void mdss_mdp_clk_ctrl(int enable)
{
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	static int mdp_clk_cnt;
	unsigned long flags;
	int changed = 0;
	int rc = 0;

	mutex_lock(&mdp_clk_lock);
	if (enable) {
		if (mdp_clk_cnt == 0)
			changed++;
		mdp_clk_cnt++;
	} else {
		if (mdp_clk_cnt) {
			mdp_clk_cnt--;
			if (mdp_clk_cnt == 0)
				changed++;
		} else {
			pr_err("Can not be turned off\n");
		}
	}

	if (changed)
		MDSS_XLOG(mdp_clk_cnt, enable, current->pid);

	pr_debug("%pS: task:%s clk_cnt=%d changed=%d enable=%d\n",
		__builtin_return_address(0), current->group_leader->comm,
		mdata->bus_ref_cnt, changed, enable);

	if (changed) {
		if (enable) {
			pm_runtime_get_sync(&mdata->pdev->dev);

			mdss_update_reg_bus_vote(mdata->reg_bus_clt,
				VOTE_INDEX_LOW);

			rc = mdss_iommu_ctrl(1);
			if (IS_ERR_VALUE((unsigned long)rc))
				pr_err("IOMMU attach failed\n");

			/* Active+Sleep */
			msm_bus_scale_client_update_context(mdata->bus_hdl,
				false, mdata->curr_bw_uc_idx);
		}

		spin_lock_irqsave(&mdp_lock, flags);
		mdata->clk_ena = enable;
		spin_unlock_irqrestore(&mdp_lock, flags);

		mdss_mdp_clk_update(MDSS_CLK_AHB, enable);
		mdss_mdp_clk_update(MDSS_CLK_AXI, enable);
		mdss_mdp_clk_update(MDSS_CLK_MDP_CORE, enable);
		mdss_mdp_clk_update(MDSS_CLK_MDP_LUT, enable);
		if (mdata->vsync_ena)
			mdss_mdp_clk_update(MDSS_CLK_MDP_VSYNC, enable);

		if (!enable) {
			/* release iommu control */
			mdss_iommu_ctrl(0);

			/* Active-Only */
			msm_bus_scale_client_update_context(mdata->bus_hdl,
				true, mdata->ao_bw_uc_idx);

			mdss_update_reg_bus_vote(mdata->reg_bus_clt,
				VOTE_INDEX_DISABLE);

			pm_runtime_mark_last_busy(&mdata->pdev->dev);
			pm_runtime_put_autosuspend(&mdata->pdev->dev);
		}
	}

	if (enable && changed)
		mdss_mdp_idle_pc_restore();

	mutex_unlock(&mdp_clk_lock);
}

static inline int mdss_mdp_irq_clk_register(struct mdss_data_type *mdata,
					    char *clk_name, int clk_idx)
{
	struct clk *tmp;

	if (clk_idx >= MDSS_MAX_CLK) {
		pr_err("invalid clk index %d\n", clk_idx);
		return -EINVAL;
	}

	tmp = devm_clk_get(&mdata->pdev->dev, clk_name);
	if (IS_ERR(tmp)) {
		pr_err("unable to get clk: %s\n", clk_name);
		return PTR_ERR(tmp);
	}

	mdata->mdp_clk[clk_idx] = tmp;
	return 0;
}

#define SEC_DEVICE_MDSS		1

static void __mdss_restore_sec_cfg(struct mdss_data_type *mdata)
{
	int ret, scm_ret = 0;

	if (test_bit(MDSS_CAPS_SCM_RESTORE_NOT_REQUIRED, mdata->mdss_caps_map))
		return;

	pr_debug("restoring mdss secure config\n");

	__mdss_mdp_reg_access_clk_enable(mdata, true);

	ret = scm_restore_sec_cfg(SEC_DEVICE_MDSS, 0, &scm_ret);
	if (ret || scm_ret)
		pr_warn("scm_restore_sec_cfg failed %d %d\n",
				ret, scm_ret);

	__mdss_mdp_reg_access_clk_enable(mdata, false);
}

static int mdss_mdp_gdsc_notifier_call(struct notifier_block *self,
		unsigned long event, void *data)
{
	struct mdss_data_type *mdata;

	mdata = container_of(self, struct mdss_data_type, gdsc_cb);

	if (event & REGULATOR_EVENT_ENABLE) {
		/*
		 * As SMMU in low tier targets is not power collapsible,
		 * hence we don't need to restore sec configuration.
		 */
		if (!mdss_mdp_req_init_restore_cfg(mdata))
			__mdss_restore_sec_cfg(mdata);
	} else if (event & REGULATOR_EVENT_PRE_DISABLE) {
		pr_debug("mdss gdsc is getting disabled\n");
		/* halt the vbif transactions */
		mdss_mdp_vbif_axi_halt(mdata);
	}

	return NOTIFY_OK;
}

static int mdss_mdp_irq_clk_setup(struct mdss_data_type *mdata)
{
	int ret;

	ret = of_property_read_u32(mdata->pdev->dev.of_node,
			"qcom,max-clk-rate", &mdata->max_mdp_clk_rate);
	if (ret) {
		pr_err("failed to get max mdp clock rate\n");
		return ret;
	}

	pr_debug("max mdp clk rate=%d\n", mdata->max_mdp_clk_rate);

	ret = devm_request_irq(&mdata->pdev->dev, mdss_mdp_hw.irq_info->irq,
				mdss_irq_handler, 0, "MDSS", mdata);
	if (ret) {
		pr_err("mdp request_irq() failed!\n");
		return ret;
	}
	disable_irq(mdss_mdp_hw.irq_info->irq);

	mdata->fs = devm_regulator_get(&mdata->pdev->dev, "vdd");
	if (IS_ERR_OR_NULL(mdata->fs)) {
		mdata->fs = NULL;
		pr_err("unable to get gdsc regulator\n");
		return -EINVAL;
	}

	mdata->venus = devm_regulator_get_optional(&mdata->pdev->dev,
		"gdsc-venus");
	if (IS_ERR_OR_NULL(mdata->venus)) {
		mdata->venus = NULL;
		pr_debug("unable to get venus gdsc regulator\n");
	}

	mdata->fs_ena = false;

	mdata->gdsc_cb.notifier_call = mdss_mdp_gdsc_notifier_call;
	mdata->gdsc_cb.priority = 5;
	if (regulator_register_notifier(mdata->fs, &(mdata->gdsc_cb)))
		pr_warn("GDSC notification registration failed!\n");
	else
		mdata->regulator_notif_register = true;

	mdata->vdd_cx = devm_regulator_get_optional(&mdata->pdev->dev,
				"vdd-cx");
	if (IS_ERR_OR_NULL(mdata->vdd_cx)) {
		pr_debug("unable to get CX reg. rc=%d\n",
					PTR_RET(mdata->vdd_cx));
		mdata->vdd_cx = NULL;
	}

	mdata->reg_bus_clt = mdss_reg_bus_vote_client_create("mdp\0");
	if (IS_ERR(mdata->reg_bus_clt)) {
		pr_err("bus client register failed\n");
		return PTR_ERR(mdata->reg_bus_clt);
	}

	if (mdss_mdp_irq_clk_register(mdata, "bus_clk", MDSS_CLK_AXI) ||
	    mdss_mdp_irq_clk_register(mdata, "iface_clk", MDSS_CLK_AHB) ||
	    mdss_mdp_irq_clk_register(mdata, "core_clk",
				      MDSS_CLK_MDP_CORE))
		return -EINVAL;

	/* lut_clk is not present on all MDSS revisions */
	mdss_mdp_irq_clk_register(mdata, "lut_clk", MDSS_CLK_MDP_LUT);

	/* vsync_clk is optional for non-smart panels */
	mdss_mdp_irq_clk_register(mdata, "vsync_clk", MDSS_CLK_MDP_VSYNC);

	/* Setting the default clock rate to the max supported.*/
	mdss_mdp_set_clk_rate(mdata->max_mdp_clk_rate);
	pr_debug("mdp clk rate=%ld\n",
		mdss_mdp_get_clk_rate(MDSS_CLK_MDP_CORE, false));

	return 0;
}

static void mdss_debug_enable_clock(int on)
{
	if (on)
		mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_ON);
	else
		mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_OFF);
}

static int mdss_mdp_debug_init(struct platform_device *pdev,
	struct mdss_data_type *mdata)
{
	int rc;
	struct mdss_debug_base *dbg_blk;

	mdata->debug_inf.debug_enable_clock = mdss_debug_enable_clock;

	rc = mdss_debugfs_init(mdata);
	if (rc)
		return rc;

	rc = mdss_mdp_debugfs_init(mdata);
	if (rc) {
		mdss_debugfs_remove(mdata);
		return rc;
	}

	mdss_debug_register_io("mdp", &mdata->mdss_io, &dbg_blk);
	mdss_debug_register_dump_range(pdev, dbg_blk, "qcom,regs-dump-mdp",
		"qcom,regs-dump-names-mdp", "qcom,regs-dump-xin-id-mdp");

	if (mdata->vbif_io.base)
		mdss_debug_register_io("vbif", &mdata->vbif_io, NULL);
	if (mdata->vbif_nrt_io.base)
		mdss_debug_register_io("vbif_nrt", &mdata->vbif_nrt_io, NULL);

	return 0;
}

static u32 mdss_get_props(void)
{
	u32 props = 0;
	void __iomem *props_base = ioremap(0xFC4B8114, 4);

	if (props_base) {
		props = readl_relaxed(props_base);
		iounmap(props_base);
	}
	return props;
}

void mdss_mdp_init_default_prefill_factors(struct mdss_data_type *mdata)
{
	mdata->prefill_data.prefill_factors.fmt_mt_nv12_factor = 8;
	mdata->prefill_data.prefill_factors.fmt_mt_factor = 4;
	mdata->prefill_data.prefill_factors.fmt_linear_factor = 1;
	mdata->prefill_data.prefill_factors.scale_factor = 1;
	mdata->prefill_data.prefill_factors.xtra_ff_factor = 2;

	if (test_bit(MDSS_QOS_TS_PREFILL, mdata->mdss_qos_map)) {
		mdata->prefill_data.ts_threshold = 25;
		mdata->prefill_data.ts_end = 8;
		mdata->prefill_data.ts_rate.numer = 1;
		mdata->prefill_data.ts_rate.denom = 4;
		mdata->prefill_data.ts_overhead = 2;
	}
}

static void mdss_mdp_hw_rev_caps_init(struct mdss_data_type *mdata)
{

	mdata->per_pipe_ib_factor.numer = 0;
	mdata->per_pipe_ib_factor.denom = 0;
	mdata->apply_post_scale_bytes = true;
	mdata->hflip_buffer_reused = true;
	/* prevent disable of prefill calculations */
	mdata->min_prefill_lines = 0xffff;
	/* clock gating feature is disabled by default */
	mdata->enable_gate = false;
	mdata->pixel_ram_size = 0;
	mem_protect_sd_ctrl_id = MEM_PROTECT_SD_CTRL_FLAT;

	mdss_mdp_hw_rev_debug_caps_init(mdata);

	switch (mdata->mdp_rev) {
	case MDSS_MDP_HW_REV_107:
		mdss_set_quirk(mdata, MDSS_QUIRK_ROTCDP);
	case MDSS_MDP_HW_REV_107_1:
		mdss_mdp_format_flag_removal(invalid_mdp107_wb_output_fmts,
			ARRAY_SIZE(invalid_mdp107_wb_output_fmts),
			VALID_MDP_WB_INTF_FORMAT);
		/* fall-through */
	case MDSS_MDP_HW_REV_107_2:
		mdata->max_target_zorder = 7; /* excluding base layer */
		mdata->max_cursor_size = 128;
		mdata->per_pipe_ib_factor.numer = 8;
		mdata->per_pipe_ib_factor.denom = 5;
		mdata->apply_post_scale_bytes = false;
		mdata->hflip_buffer_reused = false;
		mdata->min_prefill_lines = 21;
		mdata->has_ubwc = true;
		mdata->pixel_ram_size = 50 * 1024;
		set_bit(MDSS_QOS_PER_PIPE_IB, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_OVERHEAD_FACTOR, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_CDP, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_OTLIM, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_PER_PIPE_LUT, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_SIMPLIFIED_PREFILL, mdata->mdss_qos_map);
		set_bit(MDSS_CAPS_YUV_CONFIG, mdata->mdss_caps_map);
		set_bit(MDSS_CAPS_SCM_RESTORE_NOT_REQUIRED,
			mdata->mdss_caps_map);
		set_bit(MDSS_CAPS_3D_MUX_UNDERRUN_RECOVERY_SUPPORTED,
			mdata->mdss_caps_map);
		mdss_mdp_init_default_prefill_factors(mdata);
		mdss_set_quirk(mdata, MDSS_QUIRK_DSC_RIGHT_ONLY_PU);
		mdss_set_quirk(mdata, MDSS_QUIRK_DSC_2SLICE_PU_THRPUT);
		mdss_set_quirk(mdata, MDSS_QUIRK_HDR_SUPPORT_ENABLED);
		break;
	case MDSS_MDP_HW_REV_105:
	case MDSS_MDP_HW_REV_109:
		mdss_set_quirk(mdata, MDSS_QUIRK_BWCPANIC);
		mdata->max_target_zorder = 7; /* excluding base layer */
		mdata->max_cursor_size = 128;
		set_bit(MDSS_QOS_OTLIM, mdata->mdss_qos_map);
		set_bit(MDSS_CAPS_3D_MUX_UNDERRUN_RECOVERY_SUPPORTED,
			mdata->mdss_caps_map);
		break;
	case MDSS_MDP_HW_REV_110:
		mdss_set_quirk(mdata, MDSS_QUIRK_BWCPANIC);
		mdata->max_target_zorder = 4; /* excluding base layer */
		mdata->max_cursor_size = 128;
		set_bit(MDSS_QOS_OTLIM, mdata->mdss_qos_map);
		mdata->min_prefill_lines = 12;
		mdata->props = mdss_get_props();
		break;
	case MDSS_MDP_HW_REV_112:
		mdata->max_target_zorder = 4; /* excluding base layer */
		mdata->max_cursor_size = 64;
		mdata->min_prefill_lines = 12;
		set_bit(MDSS_QOS_OTLIM, mdata->mdss_qos_map);
		break;
	case MDSS_MDP_HW_REV_114:
		/* disable ECG for 28nm PHY platform */
		mdata->enable_gate = false;
	case MDSS_MDP_HW_REV_116:
		mdata->max_target_zorder = 4; /* excluding base layer */
		mdata->max_cursor_size = 128;
		mdata->min_prefill_lines = 14;
		mdata->has_ubwc = true;
		mdata->pixel_ram_size = 40 * 1024;
		mdata->apply_post_scale_bytes = false;
		mdata->hflip_buffer_reused = false;
		mem_protect_sd_ctrl_id = MEM_PROTECT_SD_CTRL;
		set_bit(MDSS_QOS_OVERHEAD_FACTOR, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_PER_PIPE_LUT, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_SIMPLIFIED_PREFILL, mdata->mdss_qos_map);
		set_bit(MDSS_CAPS_YUV_CONFIG, mdata->mdss_caps_map);
		mdss_mdp_init_default_prefill_factors(mdata);
		set_bit(MDSS_QOS_OTLIM, mdata->mdss_qos_map);
		mdss_set_quirk(mdata, MDSS_QUIRK_DMA_BI_DIR);
		mdss_set_quirk(mdata, MDSS_QUIRK_NEED_SECURE_MAP);
		break;
	case MDSS_MDP_HW_REV_115:
		mdata->max_target_zorder = 4; /* excluding base layer */
		mdata->max_cursor_size = 128;
		mdata->min_prefill_lines = 14;
		mdata->has_ubwc = false;
		mdata->pixel_ram_size = 16 * 1024;
		mdata->apply_post_scale_bytes = false;
		mdata->hflip_buffer_reused = false;
		/* disable ECG for 28nm PHY platform */
		mdata->enable_gate = false;
		mem_protect_sd_ctrl_id = MEM_PROTECT_SD_CTRL;
		set_bit(MDSS_QOS_PER_PIPE_LUT, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_SIMPLIFIED_PREFILL, mdata->mdss_qos_map);
		set_bit(MDSS_CAPS_YUV_CONFIG, mdata->mdss_caps_map);
		set_bit(MDSS_CAPS_MIXER_1_FOR_WB, mdata->mdss_caps_map);
		mdss_mdp_init_default_prefill_factors(mdata);
		set_bit(MDSS_QOS_OTLIM, mdata->mdss_qos_map);
		mdss_set_quirk(mdata, MDSS_QUIRK_DMA_BI_DIR);
		mdss_set_quirk(mdata, MDSS_QUIRK_NEED_SECURE_MAP);
		break;
	case MDSS_MDP_HW_REV_300:
	case MDSS_MDP_HW_REV_301:
		mdata->max_target_zorder = 7; /* excluding base layer */
		mdata->max_cursor_size = 384;
		mdata->per_pipe_ib_factor.numer = 8;
		mdata->per_pipe_ib_factor.denom = 5;
		mdata->apply_post_scale_bytes = false;
		mdata->hflip_buffer_reused = false;
		mdata->min_prefill_lines = 25;
		mdata->has_ubwc = true;
		mdata->pixel_ram_size = 50 * 1024;
		mdata->rects_per_sspp[MDSS_MDP_PIPE_TYPE_DMA] = 2;

		set_bit(MDSS_QOS_PER_PIPE_IB, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_TS_PREFILL, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_OVERHEAD_FACTOR, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_CDP, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_OTLIM, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_PER_PIPE_LUT, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_SIMPLIFIED_PREFILL, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_TS_PREFILL, mdata->mdss_qos_map);
		set_bit(MDSS_QOS_IB_NOCR, mdata->mdss_qos_map);
		set_bit(MDSS_CAPS_YUV_CONFIG, mdata->mdss_caps_map);
		set_bit(MDSS_CAPS_SCM_RESTORE_NOT_REQUIRED,
			mdata->mdss_caps_map);
		set_bit(MDSS_CAPS_3D_MUX_UNDERRUN_RECOVERY_SUPPORTED,
			mdata->mdss_caps_map);
		set_bit(MDSS_CAPS_QSEED3, mdata->mdss_caps_map);
		set_bit(MDSS_CAPS_DEST_SCALER, mdata->mdss_caps_map);
		mdss_mdp_init_default_prefill_factors(mdata);
		mdss_set_quirk(mdata, MDSS_QUIRK_DSC_RIGHT_ONLY_PU);
		mdss_set_quirk(mdata, MDSS_QUIRK_DSC_2SLICE_PU_THRPUT);
		mdss_set_quirk(mdata, MDSS_QUIRK_SRC_SPLIT_ALWAYS);
		mdata->has_wb_ubwc = true;
		set_bit(MDSS_CAPS_10_BIT_SUPPORTED, mdata->mdss_caps_map);
		break;
	default:
		mdata->max_target_zorder = 4; /* excluding base layer */
		mdata->max_cursor_size = 64;
	}

	if (mdata->mdp_rev < MDSS_MDP_HW_REV_103)
		mdss_set_quirk(mdata, MDSS_QUIRK_DOWNSCALE_HANG);

	if (mdata->mdp_rev < MDSS_MDP_HW_REV_102 ||
			mdata->mdp_rev == MDSS_MDP_HW_REV_200)
		mdss_set_quirk(mdata, MDSS_QUIRK_FMT_PACK_PATTERN);
}

static void mdss_hw_rev_init(struct mdss_data_type *mdata)
{
	if (mdata->mdp_rev)
		return;

	mdata->mdp_rev = MDSS_REG_READ(mdata, MDSS_REG_HW_VERSION);
	mdss_mdp_hw_rev_caps_init(mdata);
}

/**
 * mdss_hw_init() - Initialize MDSS target specific register settings
 * @mdata: MDP private data
 *
 * Initialize basic MDSS hardware settings based on the board specific
 * parameters. This function does not explicitly turn on the MDP clocks
 * and so it must be called with the MDP clocks already enabled.
 */
void mdss_hw_init(struct mdss_data_type *mdata)
{
	struct mdss_mdp_pipe *vig;

	mdss_hw_rev_init(mdata);

	/* Disable hw underrun recovery only for older mdp reversions. */
	if (mdata->mdp_rev < MDSS_MDP_HW_REV_105)
		writel_relaxed(0x0, mdata->mdp_base +
			MDSS_MDP_REG_VIDEO_INTF_UNDERFLOW_CTL);

	if (mdata->hw_settings) {
		struct mdss_hw_settings *hws = mdata->hw_settings;

		while (hws->reg) {
			writel_relaxed(hws->val, hws->reg);
			hws++;
		}
	}

	vig = mdata->vig_pipes;

	mdata->nmax_concurrent_ad_hw =
		(mdata->mdp_rev < MDSS_MDP_HW_REV_103) ? 1 : 2;

	pr_debug("MDP hw init done\n");
}

static u32 mdss_mdp_res_init(struct mdss_data_type *mdata)
{
	u32 rc = 0;

	if (mdata->res_init) {
		pr_err("mdss resources already initialized\n");
		return -EPERM;
	}

	mdata->res_init = true;
	mdata->clk_ena = false;
	mdss_mdp_hw.irq_info->irq_mask = MDSS_MDP_DEFAULT_INTR_MASK;
	mdss_mdp_hw.irq_info->irq_ena = false;

	rc = mdss_mdp_irq_clk_setup(mdata);
	if (rc)
		return rc;

	mdata->hist_intr.req = 0;
	mdata->hist_intr.curr = 0;
	mdata->hist_intr.state = 0;
	spin_lock_init(&mdata->hist_intr.lock);

	mdata->iclient = msm_ion_client_create(mdata->pdev->name);
	if (IS_ERR_OR_NULL(mdata->iclient)) {
		pr_err("msm_ion_client_create() return error (%pK)\n",
				mdata->iclient);
		mdata->iclient = NULL;
	}

	return rc;
}

static u32 mdss_mdp_scaler_init(struct mdss_data_type *mdata,
				struct device *dev)
{
	int ret;
	struct device_node *node;
	u32 prop_val;

	if (!dev)
		return -EPERM;

	node = of_get_child_by_name(dev->of_node, "qcom,mdss-scaler-offsets");
	if (!node)
		return 0;

	if (mdata->scaler_off)
		return -EFAULT;

	mdata->scaler_off = devm_kzalloc(&mdata->pdev->dev,
			sizeof(*mdata->scaler_off), GFP_KERNEL);
	if (!mdata->scaler_off)
		return -ENOMEM;

	ret = of_property_read_u32(node,
			"qcom,mdss-vig-scaler-off",
			&prop_val);
	if (ret) {
		pr_err("read property %s failed ret %d\n",
				"qcom,mdss-vig-scaler-off", ret);
		return -EINVAL;
	}
	mdata->scaler_off->vig_scaler_off = prop_val;
	ret = of_property_read_u32(node,
			"qcom,mdss-vig-scaler-lut-off",
			&prop_val);
	if (ret) {
		pr_err("read property %s failed ret %d\n",
				"qcom,mdss-vig-scaler-lut-off", ret);
		return -EINVAL;
	}
	mdata->scaler_off->vig_scaler_lut_off = prop_val;
	mdata->scaler_off->has_dest_scaler =
		of_property_read_bool(mdata->pdev->dev.of_node,
				"qcom,mdss-has-dest-scaler");
	if (mdata->scaler_off->has_dest_scaler) {
		ret = of_property_read_u32(node,
				"qcom,mdss-dest-block-off",
				&prop_val);
		if (ret) {
			pr_err("read property %s failed ret %d\n",
					"qcom,mdss-dest-block-off", ret);
			return -EINVAL;
		}
		mdata->scaler_off->dest_base = mdata->mdss_io.base +
			prop_val;
		mdata->scaler_off->ndest_scalers =
			mdss_mdp_parse_dt_prop_len(mdata->pdev,
					"qcom,mdss-dest-scalers-off");
		mdata->scaler_off->dest_scaler_off =
			devm_kzalloc(&mdata->pdev->dev, sizeof(u32) *
					mdata->scaler_off->ndest_scalers,
					GFP_KERNEL);
		if  (!mdata->scaler_off->dest_scaler_off) {
			kfree(mdata->scaler_off->dest_scaler_off);
			return -ENOMEM;
		}
		ret = mdss_mdp_parse_dt_handler(mdata->pdev,
				"qcom,mdss-dest-scaler-off",
				mdata->scaler_off->dest_scaler_off,
				mdata->scaler_off->ndest_scalers);
		if (ret)
			return -EINVAL;
		mdata->scaler_off->dest_scaler_lut_off =
			devm_kzalloc(&mdata->pdev->dev, sizeof(u32) *
					mdata->scaler_off->ndest_scalers,
					GFP_KERNEL);
		if  (!mdata->scaler_off->dest_scaler_lut_off) {
			kfree(mdata->scaler_off->dest_scaler_lut_off);
			return -ENOMEM;
		}
		ret = mdss_mdp_parse_dt_handler(mdata->pdev,
				"qcom,mdss-dest-scalers-lut-off",
				mdata->scaler_off->dest_scaler_lut_off,
				mdata->scaler_off->ndest_scalers);
		if (ret)
			return -EINVAL;
	}

	return 0;
}

/**
 * mdss_mdp_footswitch_ctrl_splash() - clocks handoff for cont. splash screen
 * @on: 1 to start handoff, 0 to complete the handoff after first frame update
 *
 * MDSS Clocks and GDSC are already on during continuous splash screen, but
 * increasing ref count will keep clocks from being turned off until handoff
 * has properly happened after frame update.
 */
void mdss_mdp_footswitch_ctrl_splash(int on)
{
	int ret;
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();

	if (mdata != NULL) {
		if (on) {
			mdata->handoff_pending = true;
			pr_debug("Enable MDP FS for splash.\n");
			if (mdata->venus) {
				ret = regulator_enable(mdata->venus);
				if (ret)
					pr_err("venus failed to enable\n");
			}

			ret = regulator_enable(mdata->fs);
			if (ret)
				pr_err("Footswitch failed to enable\n");

			mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_ON);
			mdss_bus_bandwidth_ctrl(true);
		} else {
			pr_debug("Disable MDP FS for splash.\n");
			mdss_bus_bandwidth_ctrl(false);
			mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_OFF);
			regulator_disable(mdata->fs);
			if (mdata->venus)
				regulator_disable(mdata->venus);
			mdata->handoff_pending = false;
		}
	} else {
		pr_warn("mdss mdata not initialized\n");
	}
}

static int mdss_mdp_get_pan_intf(const char *pan_intf)
{
	int i, rc = MDSS_PANEL_INTF_INVALID;

	if (!pan_intf)
		return rc;

	for (i = 0; i < ARRAY_SIZE(pan_types); i++) {
		if (!strcmp(pan_intf, pan_types[i].name)) {
			rc = pan_types[i].type;
			break;
		}
	}
	return rc;
}

static int mdss_mdp_get_pan_cfg(struct mdss_panel_cfg *pan_cfg)
{
	char *t = NULL;
	char pan_intf_str[MDSS_MAX_PANEL_LEN];
	int rc, i, panel_len;
	char pan_name[MDSS_MAX_PANEL_LEN] = {'\0'};

	if (!pan_cfg)
		return -EINVAL;

	if (mdss_mdp_panel[0] == '0') {
		pr_debug("panel name is not set\n");
		pan_cfg->lk_cfg = false;
		pan_cfg->pan_intf = MDSS_PANEL_INTF_INVALID;
		return -EINVAL;
	} else if (mdss_mdp_panel[0] == '1') {
		pan_cfg->lk_cfg = true;
	} else {
		/* read from dt */
		pan_cfg->lk_cfg = true;
		pan_cfg->pan_intf = MDSS_PANEL_INTF_INVALID;
		return -EINVAL;
	}

	/* skip lk cfg and delimiter; ex: "1:" */
	strlcpy(pan_name, &mdss_mdp_panel[2], MDSS_MAX_PANEL_LEN);
	t = strnstr(pan_name, ":", MDSS_MAX_PANEL_LEN);
	if (!t) {
		pr_err("pan_name=[%s] invalid\n", pan_name);
		pan_cfg->pan_intf = MDSS_PANEL_INTF_INVALID;
		return -EINVAL;
	}

	for (i = 0; ((pan_name + i) < t) && (i < 4); i++)
		pan_intf_str[i] = *(pan_name + i);
	pan_intf_str[i] = 0;
	pr_debug("%d panel intf %s\n", __LINE__, pan_intf_str);
	/* point to the start of panel name */
	t = t + 1;
	strlcpy(&pan_cfg->arg_cfg[0], t, sizeof(pan_cfg->arg_cfg));
	pr_debug("%d: t=[%s] panel name=[%s]\n", __LINE__,
		t, pan_cfg->arg_cfg);

	panel_len = strlen(pan_cfg->arg_cfg);
	if (!panel_len) {
		pr_err("Panel name is invalid\n");
		pan_cfg->pan_intf = MDSS_PANEL_INTF_INVALID;
		return -EINVAL;
	}

	rc = mdss_mdp_get_pan_intf(pan_intf_str);
	pan_cfg->pan_intf = (rc < 0) ?  MDSS_PANEL_INTF_INVALID : rc;
	return 0;
}

static int mdss_mdp_parse_dt_pan_intf(struct platform_device *pdev)
{
	int rc;
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	const char *prim_intf = NULL;

	rc = of_property_read_string(pdev->dev.of_node,
				"qcom,mdss-pref-prim-intf", &prim_intf);
	if (rc)
		return -ENODEV;

	rc = mdss_mdp_get_pan_intf(prim_intf);
	if (rc < 0) {
		mdata->pan_cfg.pan_intf = MDSS_PANEL_INTF_INVALID;
	} else {
		mdata->pan_cfg.pan_intf = rc;
		rc = 0;
	}
	return rc;
}

static int mdss_mdp_get_cmdline_config(struct platform_device *pdev)
{
	int rc, len = 0;
	int *intf_type;
	char *panel_name;
	struct mdss_panel_cfg *pan_cfg;
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);

	mdata->pan_cfg.arg_cfg[MDSS_MAX_PANEL_LEN] = 0;
	pan_cfg = &mdata->pan_cfg;
	panel_name = &pan_cfg->arg_cfg[0];
	intf_type = &pan_cfg->pan_intf;

	/* reads from dt by default */
	pan_cfg->lk_cfg = true;

	len = strlen(mdss_mdp_panel);

	if (len > 0) {
		rc = mdss_mdp_get_pan_cfg(pan_cfg);
		if (!rc) {
			pan_cfg->init_done = true;
			return rc;
		}
	}

	rc = mdss_mdp_parse_dt_pan_intf(pdev);
	/* if pref pan intf is not present */
	if (rc)
		pr_warn("unable to parse device tree for pan intf\n");

	pan_cfg->init_done = true;

	return 0;
}

static void __update_sspp_info(struct mdss_mdp_pipe *pipe,
	int pipe_cnt, char *type, char *buf, int *cnt)
{
	int i;
	int j;
	size_t len = PAGE_SIZE;
	int num_bytes = BITS_TO_BYTES(MDP_IMGTYPE_LIMIT1);

#define SPRINT(fmt, ...) \
		(*cnt += scnprintf(buf + *cnt, len - *cnt, fmt, ##__VA_ARGS__))

	for (i = 0; i < pipe_cnt && pipe; i++) {
		SPRINT("pipe_num:%d pipe_type:%s pipe_ndx:%d rects:%d pipe_is_handoff:%d display_id:%d ",
			pipe->num, type, pipe->ndx, pipe->multirect.max_rects,
			pipe->is_handed_off, mdss_mdp_get_display_id(pipe));
		SPRINT("fmts_supported:");
		for (j = 0; j < num_bytes; j++)
			SPRINT("%d,", pipe->supported_formats[j]);
		SPRINT("\n");
		pipe += pipe->multirect.max_rects;
	}
#undef SPRINT
}

static void mdss_mdp_update_sspp_info(struct mdss_data_type *mdata,
	char *buf, int *cnt)
{
	__update_sspp_info(mdata->vig_pipes, mdata->nvig_pipes,
		"vig", buf, cnt);
	__update_sspp_info(mdata->rgb_pipes, mdata->nrgb_pipes,
		"rgb", buf, cnt);
	__update_sspp_info(mdata->dma_pipes, mdata->ndma_pipes,
		"dma", buf, cnt);
	__update_sspp_info(mdata->cursor_pipes, mdata->ncursor_pipes,
		"cursor", buf, cnt);
}

static void mdss_mdp_update_wb_info(struct mdss_data_type *mdata,
	char *buf, int *cnt)
{
#define SPRINT(fmt, ...) \
		(*cnt += scnprintf(buf + *cnt, len - *cnt, fmt, ##__VA_ARGS__))
	size_t len = PAGE_SIZE;
	int i;
	int num_bytes = BITS_TO_BYTES(MDP_IMGTYPE_LIMIT1);

	SPRINT("rot_input_fmts=");
	for (i = 0; i < num_bytes && mdata->wb; i++)
		SPRINT("%d ", mdata->wb->supported_input_formats[i]);
	SPRINT("\nrot_output_fmts=");
	for (i = 0; i < num_bytes && mdata->wb; i++)
		SPRINT("%d ", mdata->wb->supported_input_formats[i]);
	SPRINT("\nwb_output_fmts=");
	for (i = 0; i < num_bytes && mdata->wb; i++)
		SPRINT("%d ", mdata->wb->supported_output_formats[i]);
	SPRINT("\n");
#undef SPRINT
}

ssize_t mdss_mdp_show_capabilities(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct mdss_data_type *mdata = dev_get_drvdata(dev);
	size_t len = PAGE_SIZE;
	int cnt = 0;

#define SPRINT(fmt, ...) \
		(cnt += scnprintf(buf + cnt, len - cnt, fmt, ##__VA_ARGS__))

	SPRINT("mdp_version=5\n");
	SPRINT("hw_rev=%d\n", mdata->mdp_rev);
	SPRINT("pipe_count:%d\n", mdata->nvig_pipes + mdata->nrgb_pipes +
		mdata->ndma_pipes + mdata->ncursor_pipes);
	mdss_mdp_update_sspp_info(mdata, buf, &cnt);
	mdss_mdp_update_wb_info(mdata, buf, &cnt);
	/* TODO : need to remove num pipes info */
	SPRINT("rgb_pipes=%d\n", mdata->nrgb_pipes);
	SPRINT("vig_pipes=%d\n", mdata->nvig_pipes);
	SPRINT("dma_pipes=%d\n", mdata->ndma_pipes);
	SPRINT("blending_stages=%d\n", mdata->max_target_zorder);
	SPRINT("cursor_pipes=%d\n", mdata->ncursor_pipes);
	SPRINT("max_cursor_size=%d\n", mdata->max_cursor_size);
	SPRINT("smp_count=%d\n", mdata->smp_mb_cnt);
	SPRINT("smp_size=%d\n", mdata->smp_mb_size);
	SPRINT("smp_mb_per_pipe=%d\n", mdata->smp_mb_per_pipe);
	SPRINT("max_downscale_ratio=%d\n", MAX_DOWNSCALE_RATIO);
	SPRINT("max_upscale_ratio=%d\n", MAX_UPSCALE_RATIO);

	if (mdata->nwb)
		SPRINT("wb_intf_index=%d\n", mdata->nwb - 1);

	if (test_bit(MDSS_QOS_SIMPLIFIED_PREFILL, mdata->mdss_qos_map)) {
		SPRINT("fmt_mt_nv12_factor=%d\n",
			mdata->prefill_data.prefill_factors.fmt_mt_nv12_factor);
		SPRINT("fmt_mt_factor=%d\n",
			mdata->prefill_data.prefill_factors.fmt_mt_factor);
		SPRINT("fmt_linear_factor=%d\n",
			mdata->prefill_data.prefill_factors.fmt_linear_factor);
		SPRINT("scale_factor=%d\n",
			mdata->prefill_data.prefill_factors.scale_factor);
		SPRINT("xtra_ff_factor=%d\n",
			mdata->prefill_data.prefill_factors.xtra_ff_factor);
	}

	if (test_bit(MDSS_QOS_TS_PREFILL, mdata->mdss_qos_map)) {
		SPRINT("amortizable_threshold=%d\n",
			mdata->prefill_data.ts_threshold);
		SPRINT("system_overhead_lines=%d\n",
			mdata->prefill_data.ts_overhead);
	}

	if (mdata->props)
		SPRINT("props=%d\n", mdata->props);
	if (mdata->max_bw_low)
		SPRINT("max_bandwidth_low=%u\n", mdata->max_bw_low);
	if (mdata->max_bw_high)
		SPRINT("max_bandwidth_high=%u\n", mdata->max_bw_high);
	if (mdata->max_pipe_width)
		SPRINT("max_pipe_width=%d\n", mdata->max_pipe_width);
	if (mdata->max_mixer_width)
		SPRINT("max_mixer_width=%d\n", mdata->max_mixer_width);
	if (mdata->max_bw_per_pipe)
		SPRINT("max_pipe_bw=%u\n", mdata->max_bw_per_pipe);
	if (mdata->max_mdp_clk_rate)
		SPRINT("max_mdp_clk=%u\n", mdata->max_mdp_clk_rate);
	if (mdata->clk_factor.numer)
		SPRINT("clk_fudge_factor=%u,%u\n", mdata->clk_factor.numer,
			mdata->clk_factor.denom);
	if (mdata->has_rot_dwnscale) {
		if (mdata->rot_dwnscale_min)
			SPRINT("rot_dwnscale_min=%u\n",
				mdata->rot_dwnscale_min);
		if (mdata->rot_dwnscale_max)
			SPRINT("rot_dwnscale_max=%u\n",
				mdata->rot_dwnscale_max);
	}
	SPRINT("features=");
	if (mdata->has_bwc)
		SPRINT(" bwc");
	if (mdata->has_ubwc)
		SPRINT(" ubwc");
	if (mdata->has_wb_ubwc)
		SPRINT(" wb_ubwc");
	if (mdata->has_decimation)
		SPRINT(" decimation");
	if (mdata->highest_bank_bit && !mdss_mdp_is_ubwc_supported(mdata))
		SPRINT(" tile_format");
	if (mdata->has_non_scalar_rgb)
		SPRINT(" non_scalar_rgb");
	if (mdata->has_src_split)
		SPRINT(" src_split");
	if (mdata->has_rot_dwnscale)
		SPRINT(" rotator_downscale");
	if (mdata->max_bw_settings_cnt)
		SPRINT(" dynamic_bw_limit");
	if (test_bit(MDSS_CAPS_QSEED3, mdata->mdss_caps_map))
		SPRINT(" qseed3");
	if (test_bit(MDSS_CAPS_DEST_SCALER, mdata->mdss_caps_map))
		SPRINT(" dest_scaler");
	if (mdata->has_separate_rotator)
		SPRINT(" separate_rotator");
	if (mdss_has_quirk(mdata, MDSS_QUIRK_HDR_SUPPORT_ENABLED))
		SPRINT(" hdr");
	SPRINT("\n");
#undef SPRINT

	return cnt;
}

static ssize_t mdss_mdp_read_max_limit_bw(struct device *dev,
		struct device_attribute *attr, char *buf)
{
	struct mdss_data_type *mdata = dev_get_drvdata(dev);
	size_t len = PAGE_SIZE;
	u32 cnt = 0;
	int i;

	char bw_names[4][8] = {"default", "camera", "hflip", "vflip"};
	char pipe_bw_names[4][16] = {"default_pipe", "camera_pipe",
				"hflip_pipe", "vflip_pipe"};
	struct mdss_max_bw_settings *bw_settings;
	struct mdss_max_bw_settings *pipe_bw_settings;

	bw_settings = mdata->max_bw_settings;
	pipe_bw_settings = mdata->max_per_pipe_bw_settings;

#define SPRINT(fmt, ...) \
		(cnt += scnprintf(buf + cnt, len - cnt, fmt, ##__VA_ARGS__))

	SPRINT("bw_mode_bitmap=%d\n", mdata->bw_mode_bitmap);
	SPRINT("bw_limit_pending=%d\n", mdata->bw_limit_pending);

	for (i = 0; i < mdata->max_bw_settings_cnt; i++) {
		SPRINT("%s=%d\n", bw_names[i], bw_settings->mdss_max_bw_val);
		bw_settings++;
	}

	for (i = 0; i < mdata->mdss_per_pipe_bw_cnt; i++) {
		SPRINT("%s=%d\n", pipe_bw_names[i],
					pipe_bw_settings->mdss_max_bw_val);
		pipe_bw_settings++;
	}

	return cnt;
}

static ssize_t mdss_mdp_store_max_limit_bw(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t len)
{
	struct mdss_data_type *mdata = dev_get_drvdata(dev);
	u32 data = 0;

	if (kstrtouint(buf, 0, &data)) {
		pr_info("Not able scan to bw_mode_bitmap\n");
	} else {
		mdata->bw_mode_bitmap = data;
		mdata->bw_limit_pending = true;
		pr_debug("limit use case, bw_mode_bitmap = %d\n", data);
	}

	return len;
}

static DEVICE_ATTR(caps, 0444, mdss_mdp_show_capabilities, NULL);
static DEVICE_ATTR(bw_mode_bitmap, 0664,
		mdss_mdp_read_max_limit_bw, mdss_mdp_store_max_limit_bw);

static struct attribute *mdp_fs_attrs[] = {
	&dev_attr_caps.attr,
	&dev_attr_bw_mode_bitmap.attr,
	NULL
};

static struct attribute_group mdp_fs_attr_group = {
	.attrs = mdp_fs_attrs
};

static int mdss_mdp_register_sysfs(struct mdss_data_type *mdata)
{
	struct device *dev = &mdata->pdev->dev;
	int rc;

	rc = sysfs_create_group(&dev->kobj, &mdp_fs_attr_group);

	return rc;
}

int mdss_panel_get_intf_status(u32 disp_num, u32 intf_type)
{
	int rc, intf_status = 0;
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();

	if (!mdss_res || !mdss_res->pan_cfg.init_done)
		return -EPROBE_DEFER;

	if (mdss_res->handoff_pending) {
		mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_ON);
		intf_status = readl_relaxed(mdata->mdp_base +
			MDSS_MDP_REG_DISP_INTF_SEL);
		mdss_mdp_clk_ctrl(MDP_BLOCK_POWER_OFF);
		if (intf_type == MDSS_PANEL_INTF_DSI) {
			if (disp_num == DISPLAY_1)
				rc = (intf_status & MDSS_MDP_INTF_DSI0_SEL);
			else if (disp_num == DISPLAY_2)
				rc = (intf_status & MDSS_MDP_INTF_DSI1_SEL);
			else
				rc = 0;
		} else if (intf_type == MDSS_PANEL_INTF_EDP) {
			intf_status &= MDSS_MDP_INTF_EDP_SEL;
			rc = (intf_status == MDSS_MDP_INTF_EDP_SEL);
		} else if (intf_type == MDSS_PANEL_INTF_HDMI) {
			intf_status &= MDSS_MDP_INTF_HDMI_SEL;
			rc = (intf_status == MDSS_MDP_INTF_HDMI_SEL);
		} else {
			rc = 0;
		}
	} else {
		rc = 0;
	}

	return rc;
}

static int mdss_mdp_probe(struct platform_device *pdev)
{
	struct resource *res;
	int rc;
	struct mdss_data_type *mdata;
	uint32_t intf_sel = 0;
	uint32_t split_display = 0;
	int num_of_display_on = 0;
	int i = 0;

	if (!pdev->dev.of_node) {
		pr_err("MDP driver only supports device tree probe\n");
		return -ENOTSUPP;
	}

	if (mdss_res) {
		pr_err("MDP already initialized\n");
		return -EINVAL;
	}

	mdata = devm_kzalloc(&pdev->dev, sizeof(*mdata), GFP_KERNEL);
	if (mdata == NULL)
		return -ENOMEM;

	pdev->id = 0;
	mdata->pdev = pdev;
	platform_set_drvdata(pdev, mdata);
	mdss_res = mdata;
	mutex_init(&mdata->reg_lock);
	mutex_init(&mdata->reg_bus_lock);
	mutex_init(&mdata->bus_lock);
	INIT_LIST_HEAD(&mdata->reg_bus_clist);
	atomic_set(&mdata->sd_client_count, 0);
	atomic_set(&mdata->active_intf_cnt, 0);

	mdss_res->mdss_util = mdss_get_util_intf();
	if (mdss_res->mdss_util == NULL) {
		pr_err("Failed to get mdss utility functions\n");
		return -ENODEV;
	}

	mdss_res->mdss_util->get_iommu_domain = mdss_smmu_get_domain_id;
	mdss_res->mdss_util->iommu_attached = is_mdss_iommu_attached;
	mdss_res->mdss_util->iommu_ctrl = mdss_iommu_ctrl;
	mdss_res->mdss_util->bus_scale_set_quota = mdss_bus_scale_set_quota;
	mdss_res->mdss_util->bus_bandwidth_ctrl = mdss_bus_bandwidth_ctrl;
	mdss_res->mdss_util->panel_intf_type = mdss_panel_intf_type;
	mdss_res->mdss_util->panel_intf_status = mdss_panel_get_intf_status;

	rc = msm_mdss_ioremap_byname(pdev, &mdata->mdss_io, "mdp_phys");
	if (rc) {
		pr_err("unable to map MDP base\n");
		goto probe_done;
	}
	pr_debug("MDSS HW Base addr=0x%x len=0x%x\n",
		(int) (unsigned long) mdata->mdss_io.base,
		mdata->mdss_io.len);

	rc = msm_mdss_ioremap_byname(pdev, &mdata->vbif_io, "vbif_phys");
	if (rc) {
		pr_err("unable to map MDSS VBIF base\n");
		goto probe_done;
	}
	pr_debug("MDSS VBIF HW Base addr=0x%x len=0x%x\n",
		(int) (unsigned long) mdata->vbif_io.base,
		mdata->vbif_io.len);

	rc = msm_mdss_ioremap_byname(pdev, &mdata->vbif_nrt_io,
				     "vbif_nrt_phys");
	if (rc)
		pr_debug("unable to map MDSS VBIF non-realtime base\n");
	else
		pr_debug("MDSS VBIF NRT HW Base addr=%pK len=0x%x\n",
			mdata->vbif_nrt_io.base, mdata->vbif_nrt_io.len);

	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	if (!res) {
		pr_err("unable to get MDSS irq\n");
		rc = -ENOMEM;
		goto probe_done;
	}

	mdss_mdp_hw.irq_info = kcalloc(1, sizeof(struct irq_info), GFP_KERNEL);
	if (!mdss_mdp_hw.irq_info)
		return -ENOMEM;

	mdss_mdp_hw.irq_info->irq = res->start;
	mdss_mdp_hw.ptr = mdata;

	/* export misc. interrupts to external driver */
	mdata->irq_domain = irq_domain_add_linear(pdev->dev.of_node, 32,
			&mdss_irq_domain_ops, mdata);
	if (!mdata->irq_domain) {
		pr_err("unable to add linear domain\n");
		rc = -ENOMEM;
		goto probe_done;
	}

	mdss_misc_hw.irq_info = mdss_intr_line();
	rc = mdss_res->mdss_util->register_irq(&mdss_misc_hw);
	if (rc)
		pr_err("mdss_register_irq failed.\n");

	rc = mdss_mdp_res_init(mdata);
	if (rc) {
		pr_err("unable to initialize mdss mdp resources\n");
		goto probe_done;
	}

	pm_runtime_set_autosuspend_delay(&pdev->dev, AUTOSUSPEND_TIMEOUT_MS);
	if (mdata->idle_pc_enabled)
		pm_runtime_use_autosuspend(&pdev->dev);
	pm_runtime_set_suspended(&pdev->dev);
	pm_runtime_enable(&pdev->dev);
	if (!pm_runtime_enabled(&pdev->dev))
		mdss_mdp_footswitch_ctrl(mdata, true);

	rc = mdss_mdp_bus_scale_register(mdata);
	if (rc) {
		pr_err("unable to register bus scaling\n");
		goto probe_done;
	}

	/*
	 * enable clocks and read mdp_rev as soon as possible once
	 * kernel is up.
	 */
	mdss_mdp_footswitch_ctrl_splash(true);
	mdss_hw_rev_init(mdata);

	/*populate hw iomem base info from device tree*/
	rc = mdss_mdp_parse_dt(pdev);
	if (rc) {
		pr_err("unable to parse device tree\n");
		goto probe_done;
	}

	rc = mdss_mdp_get_cmdline_config(pdev);
	if (rc) {
		pr_err("Error in panel override:rc=[%d]\n", rc);
		goto probe_done;
	}

	rc = mdss_mdp_debug_init(pdev, mdata);
	if (rc) {
		pr_err("unable to initialize mdp debugging\n");
		goto probe_done;
	}
	rc = mdss_mdp_scaler_init(mdata, &pdev->dev);
	if (rc)
		goto probe_done;

	rc = mdss_mdp_register_sysfs(mdata);
	if (rc)
		pr_err("unable to register mdp sysfs nodes\n");

	rc = mdss_fb_register_mdp_instance(&mdp5);
	if (rc)
		pr_err("unable to register mdp instance\n");

	rc = mdss_res->mdss_util->register_irq(&mdss_mdp_hw);
	if (rc)
		pr_err("mdss_register_irq failed.\n");

	rc = mdss_smmu_init(mdata, &pdev->dev);
	if (rc)
		pr_err("mdss smmu init failed\n");

	mdss_mdp_set_supported_formats(mdata);

	mdss_res->mdss_util->mdp_probe_done = true;

	mdss_hw_init(mdata);

	rc = mdss_mdp_pp_init(&pdev->dev);
	if (rc)
		pr_err("unable to initialize mdss pp resources\n");

	/* Restoring Secure configuration during boot-up */
	if (mdss_mdp_req_init_restore_cfg(mdata))
		__mdss_restore_sec_cfg(mdata);

	if (mdss_has_quirk(mdata, MDSS_QUIRK_BWCPANIC)) {
		mdata->default_panic_lut0 = readl_relaxed(mdata->mdp_base +
			MMSS_MDP_PANIC_LUT0);
		mdata->default_panic_lut1 = readl_relaxed(mdata->mdp_base +
			MMSS_MDP_PANIC_LUT1);
		mdata->default_robust_lut = readl_relaxed(mdata->mdp_base +
			MMSS_MDP_ROBUST_LUT);
	}

	/*
	 * Read the DISP_INTF_SEL register to check if display was enabled in
	 * bootloader or not. If yes, let handoff handle removing the extra
	 * clk/regulator votes else turn off clk/regulators because purpose
	 * here is to get mdp_rev.
	 */
	intf_sel = readl_relaxed(mdata->mdp_base +
		MDSS_MDP_REG_DISP_INTF_SEL);
	split_display = readl_relaxed(mdata->mdp_base +
		MDSS_MDP_REG_SPLIT_DISPLAY_EN);
	mdata->splash_intf_sel = intf_sel;
	mdata->splash_split_disp = split_display;

	if (intf_sel != 0) {
		for (i = 0; i < 4; i++)
			if ((intf_sel >> i*8) & 0x000000FF)
				num_of_display_on++;

		/*
		 * For split display enabled - DSI0, DSI1 interfaces are
		 * considered as single display. So decrement
		 * 'num_of_display_on' by 1
		 */
		if (split_display)
			num_of_display_on--;
	}
	if (!num_of_display_on) {
		mdss_mdp_footswitch_ctrl_splash(false);
		msm_bus_scale_client_update_request(
					mdata->bus_hdl, 0);
		mdata->ao_bw_uc_idx = 0;
	} else {
		mdata->handoff_pending = true;
		/*
		 * If multiple displays are enabled in LK, ctrl_splash off will
		 * be called multiple times during splash_cleanup. Need to
		 * enable it symmetrically
		 */
		for (i = 1; i < num_of_display_on; i++)
			mdss_mdp_footswitch_ctrl_splash(true);
	}

	mdp_intr_cb  = kcalloc(ARRAY_SIZE(mdp_irq_map),
			sizeof(struct intr_callback), GFP_KERNEL);
	if (mdp_intr_cb == NULL)
		return -ENOMEM;

	mdss_res->mdp_irq_mask = kcalloc(ARRAY_SIZE(mdp_intr_reg),
			sizeof(u32), GFP_KERNEL);
	if (mdss_res->mdp_irq_mask == NULL)
		return -ENOMEM;

	pr_info("mdss version = 0x%x, bootloader display is %s, num %d, intf_sel=0x%08x\n",
		mdata->mdp_rev, num_of_display_on ? "on" : "off",
		num_of_display_on, intf_sel);

probe_done:
	if (IS_ERR_VALUE((unsigned long)rc)) {
		if (!num_of_display_on)
			mdss_mdp_footswitch_ctrl_splash(false);

		if (mdata->regulator_notif_register)
			regulator_unregister_notifier(mdata->fs,
						&(mdata->gdsc_cb));
		mdss_mdp_hw.ptr = NULL;
		mdss_mdp_pp_term(&pdev->dev);
		mutex_destroy(&mdata->reg_lock);
		mdss_res = NULL;
	}

	return rc;
}

static void mdss_mdp_parse_dt_regs_array(const u32 *arr,
	struct mdss_io_data *io, struct mdss_hw_settings *hws, int count)
{
	u32 len, reg;
	int i;

	if (!arr)
		return;

	for (i = 0, len = count * 2; i < len; i += 2) {
		reg = be32_to_cpu(arr[i]);
		if (reg >= io->len)
			continue;

		hws->reg = io->base + reg;
		hws->val = be32_to_cpu(arr[i + 1]);
		pr_debug("reg: 0x%04x=0x%08x\n", reg, hws->val);
		hws++;
	}
}

int mdss_mdp_parse_dt_hw_settings(struct platform_device *pdev)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	struct mdss_hw_settings *hws;
	const u32 *vbif_arr, *mdp_arr, *vbif_nrt_arr;
	int vbif_len, mdp_len, vbif_nrt_len;

	vbif_arr = of_get_property(pdev->dev.of_node, "qcom,vbif-settings",
			&vbif_len);
	if (!vbif_arr || (vbif_len & 1)) {
		pr_debug("MDSS VBIF settings not found\n");
		vbif_len = 0;
	}
	vbif_len /= 2 * sizeof(u32);

	vbif_nrt_arr = of_get_property(pdev->dev.of_node,
				"qcom,vbif-nrt-settings", &vbif_nrt_len);
	if (!vbif_nrt_arr || (vbif_nrt_len & 1)) {
		pr_debug("MDSS VBIF non-realtime settings not found\n");
		vbif_nrt_len = 0;
	}
	vbif_nrt_len /= 2 * sizeof(u32);

	mdp_arr = of_get_property(pdev->dev.of_node, "qcom,mdp-settings",
			&mdp_len);
	if (!mdp_arr || (mdp_len & 1)) {
		pr_debug("MDSS MDP settings not found\n");
		mdp_len = 0;
	}
	mdp_len /= 2 * sizeof(u32);

	if (!(mdp_len + vbif_len + vbif_nrt_len))
		return 0;

	hws = devm_kzalloc(&pdev->dev, sizeof(*hws) * (vbif_len + mdp_len +
			vbif_nrt_len + 1), GFP_KERNEL);
	if (!hws)
		return -ENOMEM;

	mdss_mdp_parse_dt_regs_array(vbif_arr, &mdata->vbif_io,
			hws, vbif_len);
	mdss_mdp_parse_dt_regs_array(vbif_nrt_arr, &mdata->vbif_nrt_io,
			hws, vbif_nrt_len);
	mdss_mdp_parse_dt_regs_array(mdp_arr, &mdata->mdss_io,
		hws + vbif_len, mdp_len);

	mdata->hw_settings = hws;

	return 0;
}

static int mdss_mdp_parse_dt(struct platform_device *pdev)
{
	int rc, data;
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);

	rc = mdss_mdp_parse_dt_hw_settings(pdev);
	if (rc) {
		pr_err("Error in device tree : hw settings\n");
		return rc;
	}

	rc = mdss_mdp_parse_dt_pipe(pdev);
	if (rc) {
		pr_err("Error in device tree : pipes\n");
		return rc;
	}

	rc = mdss_mdp_parse_dt_mixer(pdev);
	if (rc) {
		pr_err("Error in device tree : mixers\n");
		return rc;
	}

	rc = mdss_mdp_parse_dt_misc(pdev);
	if (rc) {
		pr_err("Error in device tree : misc\n");
		return rc;
	}

	rc = mdss_mdp_parse_dt_wb(pdev);
	if (rc) {
		pr_err("Error in device tree : wb\n");
		return rc;
	}

	rc = mdss_mdp_parse_dt_ctl(pdev);
	if (rc) {
		pr_err("Error in device tree : ctl\n");
		return rc;
	}

	rc = mdss_mdp_parse_dt_video_intf(pdev);
	if (rc) {
		pr_err("Error in device tree : ctl\n");
		return rc;
	}

	rc = mdss_mdp_parse_dt_smp(pdev);
	if (rc) {
		pr_err("Error in device tree : smp\n");
		return rc;
	}

	rc = mdss_mdp_parse_dt_prefill(pdev);
	if (rc) {
		pr_err("Error in device tree : prefill\n");
		return rc;
	}

	rc = mdss_mdp_parse_dt_ad_cfg(pdev);
	if (rc) {
		pr_err("Error in device tree : ad\n");
		return rc;
	}

	rc = mdss_mdp_parse_dt_cdm(pdev);
	if (rc)
		pr_debug("CDM offset not found in device tree\n");

	rc = mdss_mdp_parse_dt_dsc(pdev);
	if (rc)
		pr_debug("DSC offset not found in device tree\n");

	/* Parse the mdp specific register base offset*/
	rc = of_property_read_u32(pdev->dev.of_node,
		"qcom,mdss-mdp-reg-offset", &data);
	if (rc) {
		pr_err("Error in device tree : mdp reg base\n");
		return rc;
	}
	mdata->mdp_base = mdata->mdss_io.base + data;
	return 0;
}

static void mdss_mdp_parse_dt_pipe_sw_reset(struct platform_device *pdev,
	u32 reg_off, char *prop_name, struct mdss_mdp_pipe *pipe_list,
	u32 npipes)
{
	int len;
	const u32 *arr;

	arr = of_get_property(pdev->dev.of_node, prop_name, &len);
	if (arr) {
		int i;

		len /= sizeof(u32);
		if (len != npipes) {
			pr_err("%s: invalid sw_reset entries req:%d found:%d\n",
				prop_name, len, npipes);
			return;
		}

		for (i = 0; i < len; i++) {
			pipe_list[i].sw_reset.reg_off = reg_off;
			pipe_list[i].sw_reset.bit_off = be32_to_cpu(arr[i]);

			pr_debug("%s[%d]: sw_reset: reg_off:0x%x bit_off:%d\n",
				prop_name, i, reg_off, be32_to_cpu(arr[i]));
		}
	}
}

static int  mdss_mdp_parse_dt_pipe_clk_ctrl(struct platform_device *pdev,
	char *prop_name, struct mdss_mdp_pipe *pipe_list, u32 npipes)
{
	int rc = 0, len;
	const u32 *arr;

	arr = of_get_property(pdev->dev.of_node, prop_name, &len);
	if (arr) {
		int i, j;

		len /= sizeof(u32);
		for (i = 0, j = 0; i < len; j++) {
			struct mdss_mdp_pipe *pipe = NULL;

			if (j >= npipes) {
				pr_err("invalid clk ctrl enries for prop: %s\n",
					prop_name);
				return -EINVAL;
			}

			pipe = &pipe_list[j];

			pipe->clk_ctrl.reg_off = be32_to_cpu(arr[i++]);
			pipe->clk_ctrl.bit_off = be32_to_cpu(arr[i++]);

			/* status register is next in line to ctrl register */
			pipe->clk_status.reg_off = pipe->clk_ctrl.reg_off + 4;
			pipe->clk_status.bit_off = be32_to_cpu(arr[i++]);

			pr_debug("%s[%d]: ctrl: reg_off: 0x%x bit_off: %d\n",
				prop_name, j, pipe->clk_ctrl.reg_off,
				pipe->clk_ctrl.bit_off);
			pr_debug("%s[%d]: status: reg_off: 0x%x bit_off: %d\n",
				prop_name, j, pipe->clk_status.reg_off,
				pipe->clk_status.bit_off);
		}
		if (j != npipes) {
			pr_err("%s: %d entries found. required %d\n",
				prop_name, j, npipes);
			for (i = 0; i < npipes; i++) {
				memset(&pipe_list[i].clk_ctrl, 0,
					sizeof(pipe_list[i].clk_ctrl));
				memset(&pipe_list[i].clk_status, 0,
					sizeof(pipe_list[i].clk_status));
			}
			rc = -EINVAL;
		}
	} else {
		pr_err("error mandatory property '%s' not found\n", prop_name);
		rc = -EINVAL;
	}

	return rc;
}

static void mdss_mdp_parse_dt_pipe_panic_ctrl(struct platform_device *pdev,
	char *prop_name, struct mdss_mdp_pipe *pipe_list, u32 npipes)
{
	int i, j;
	int len;
	const u32 *arr;
	struct mdss_mdp_pipe *pipe = NULL;

	arr = of_get_property(pdev->dev.of_node, prop_name, &len);
	if (arr) {
		len /= sizeof(u32);
		for (i = 0, j = 0; i < len; j++) {
			if (j >= npipes) {
				pr_err("invalid panic ctrl enries for prop: %s\n",
					prop_name);
				return;
			}

			pipe = &pipe_list[j];
			pipe->panic_ctrl_ndx = be32_to_cpu(arr[i++]);
		}
		if (j != npipes)
			pr_err("%s: %d entries found. required %d\n",
				prop_name, j, npipes);
	} else {
		pr_debug("panic ctrl enabled but property '%s' not found\n",
								prop_name);
	}
}

static int mdss_mdp_parse_dt_pipe_helper(struct platform_device *pdev,
		u32 ptype, char *ptypestr,
		struct mdss_mdp_pipe **out_plist,
		size_t len,
		u8 priority_base)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	u32 offsets[MDSS_MDP_MAX_SSPP];
	u32 ftch_id[MDSS_MDP_MAX_SSPP];
	u32 xin_id[MDSS_MDP_MAX_SSPP];
	u32 pnums[MDSS_MDP_MAX_SSPP];
	struct mdss_mdp_pipe *pipe_list;
	char prop_name[64];
	int i, cnt, rc;
	u32 rects_per_sspp;

	if (!out_plist)
		return -EINVAL;

	for (i = 0, cnt = 0; i < MDSS_MDP_MAX_SSPP && cnt < len; i++) {
		if (ptype == get_pipe_type_from_num(i)) {
			pnums[cnt] = i;
			cnt++;
		}
	}

	if (cnt < len)
		pr_warn("Invalid %s pipe count: %zu, max supported: %d\n",
				ptypestr, len, cnt);
	if (cnt == 0) {
		*out_plist = NULL;

		return 0;
	}

	/* by default works in single rect mode unless otherwise noted */
	rects_per_sspp = mdata->rects_per_sspp[ptype] ? : 1;

	pipe_list = devm_kzalloc(&pdev->dev,
			(sizeof(struct mdss_mdp_pipe) * cnt * rects_per_sspp),
			GFP_KERNEL);
	if (!pipe_list)
		return -ENOMEM;

	if (mdata->has_pixel_ram || (ptype == MDSS_MDP_PIPE_TYPE_CURSOR)) {
		for (i = 0; i < cnt; i++)
			ftch_id[i] = -1;
	} else {
		snprintf(prop_name, sizeof(prop_name),
				"qcom,mdss-pipe-%s-fetch-id", ptypestr);
		rc = mdss_mdp_parse_dt_handler(pdev, prop_name, ftch_id,
				cnt);
		if (rc)
			goto parse_fail;
	}

	snprintf(prop_name, sizeof(prop_name),
			"qcom,mdss-pipe-%s-xin-id", ptypestr);
	rc = mdss_mdp_parse_dt_handler(pdev, prop_name, xin_id, cnt);
	if (rc)
		goto parse_fail;

	snprintf(prop_name, sizeof(prop_name),
			"qcom,mdss-pipe-%s-off", ptypestr);
	rc = mdss_mdp_parse_dt_handler(pdev, prop_name, offsets, cnt);
	if (rc)
		goto parse_fail;

	rc = mdss_mdp_pipe_addr_setup(mdata, pipe_list, offsets, ftch_id,
			xin_id, ptype, pnums, cnt, rects_per_sspp,
			priority_base);
	if (rc)
		goto parse_fail;

	snprintf(prop_name, sizeof(prop_name),
			"qcom,mdss-pipe-%s-clk-ctrl-offsets", ptypestr);
	rc = mdss_mdp_parse_dt_pipe_clk_ctrl(pdev, prop_name,
			pipe_list, cnt);
	if (rc)
		goto parse_fail;

	*out_plist = pipe_list;

	return cnt;
parse_fail:
	devm_kfree(&pdev->dev, pipe_list);

	return rc;
}

static int mdss_mdp_parse_dt_pipe(struct platform_device *pdev)
{
	int rc = 0;
	u32 nfids = 0, len, nxids = 0, npipes = 0;
	u32 sw_reset_offset = 0;
	u32 data[4];

	struct mdss_data_type *mdata = platform_get_drvdata(pdev);

	mdata->has_pixel_ram = !mdss_mdp_parse_dt_prop_len(pdev,
						"qcom,mdss-smp-data");

	mdata->nvig_pipes = mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-pipe-vig-off");
	mdata->nrgb_pipes = mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-pipe-rgb-off");
	mdata->ndma_pipes = mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-pipe-dma-off");
	mdata->ncursor_pipes = mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-pipe-cursor-off");

	npipes = mdata->nvig_pipes + mdata->nrgb_pipes + mdata->ndma_pipes;

	if (!mdata->has_pixel_ram) {
		nfids  += mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-pipe-vig-fetch-id");
		nfids  += mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-pipe-rgb-fetch-id");
		nfids  += mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-pipe-dma-fetch-id");
		if (npipes != nfids) {
			pr_err("device tree err: unequal number of pipes and smp ids");
			return -EINVAL;
		}
	}

	if (mdata->nvig_pipes)
		nxids += mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-pipe-vig-xin-id");
	if (mdata->nrgb_pipes)
		nxids += mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-pipe-rgb-xin-id");
	if (mdata->ndma_pipes)
		nxids += mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-pipe-dma-xin-id");
	if (npipes != nxids) {
		pr_err("device tree err: unequal number of pipes and xin ids\n");
		return -EINVAL;
	}

	rc = mdss_mdp_parse_dt_pipe_helper(pdev, MDSS_MDP_PIPE_TYPE_VIG, "vig",
			&mdata->vig_pipes, mdata->nvig_pipes, 0);
	if (IS_ERR_VALUE((unsigned long)rc))
		goto parse_fail;
	mdata->nvig_pipes = rc;

	rc = mdss_mdp_parse_dt_pipe_helper(pdev, MDSS_MDP_PIPE_TYPE_RGB, "rgb",
			&mdata->rgb_pipes, mdata->nrgb_pipes,
			mdata->nvig_pipes);
	if (IS_ERR_VALUE((unsigned long)rc))
		goto parse_fail;
	mdata->nrgb_pipes = rc;

	rc = mdss_mdp_parse_dt_pipe_helper(pdev, MDSS_MDP_PIPE_TYPE_DMA, "dma",
			&mdata->dma_pipes, mdata->ndma_pipes,
			mdata->nvig_pipes + mdata->nrgb_pipes);
	if (IS_ERR_VALUE((unsigned long)rc))
		goto parse_fail;
	mdata->ndma_pipes = rc;

	rc = mdss_mdp_parse_dt_pipe_helper(pdev, MDSS_MDP_PIPE_TYPE_CURSOR,
			"cursor", &mdata->cursor_pipes, mdata->ncursor_pipes,
			0);
	if (IS_ERR_VALUE((unsigned long)rc))
		goto parse_fail;
	mdata->ncursor_pipes = rc;

	rc = 0;

	mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-pipe-sw-reset-off",
		&sw_reset_offset, 1);
	if (sw_reset_offset) {
		if (mdata->vig_pipes)
			mdss_mdp_parse_dt_pipe_sw_reset(pdev, sw_reset_offset,
				"qcom,mdss-pipe-vig-sw-reset-map",
				mdata->vig_pipes, mdata->nvig_pipes);
		if (mdata->rgb_pipes)
			mdss_mdp_parse_dt_pipe_sw_reset(pdev, sw_reset_offset,
				"qcom,mdss-pipe-rgb-sw-reset-map",
				mdata->rgb_pipes, mdata->nrgb_pipes);
		if (mdata->dma_pipes)
			mdss_mdp_parse_dt_pipe_sw_reset(pdev, sw_reset_offset,
				"qcom,mdss-pipe-dma-sw-reset-map",
				mdata->dma_pipes, mdata->ndma_pipes);
	}

	mdata->has_panic_ctrl = of_property_read_bool(pdev->dev.of_node,
		"qcom,mdss-has-panic-ctrl");
	if (mdata->has_panic_ctrl) {
		if (mdata->vig_pipes)
			mdss_mdp_parse_dt_pipe_panic_ctrl(pdev,
				"qcom,mdss-pipe-vig-panic-ctrl-offsets",
				mdata->vig_pipes, mdata->nvig_pipes);
		if (mdata->rgb_pipes)
			mdss_mdp_parse_dt_pipe_panic_ctrl(pdev,
				"qcom,mdss-pipe-rgb-panic-ctrl-offsets",
				mdata->rgb_pipes, mdata->nrgb_pipes);
		if (mdata->dma_pipes)
			mdss_mdp_parse_dt_pipe_panic_ctrl(pdev,
				"qcom,mdss-pipe-dma-panic-ctrl-offsets",
				mdata->dma_pipes, mdata->ndma_pipes);
	}

	len = mdss_mdp_parse_dt_prop_len(pdev, "qcom,mdss-per-pipe-panic-luts");
	if (len != 4) {
		pr_debug("Unable to read per-pipe-panic-luts\n");
	} else {
		rc = mdss_mdp_parse_dt_handler(pdev,
			"qcom,mdss-per-pipe-panic-luts", data, len);
		mdata->default_panic_lut_per_pipe_linear = data[0];
		mdata->default_panic_lut_per_pipe_tile = data[1];
		mdata->default_robust_lut_per_pipe_linear = data[2];
		mdata->default_robust_lut_per_pipe_tile = data[3];
		pr_debug("per pipe panic lut [0]:0x%x [1]:0x%x [2]:0x%x [3]:0x%x\n",
			data[0], data[1], data[2], data[3]);
	}

parse_fail:
	return rc;
}

static int mdss_mdp_parse_dt_mixer(struct platform_device *pdev)
{

	u32 nmixers, npingpong;
	int rc = 0;
	u32 *mixer_offsets = NULL, *dspp_offsets = NULL,
	    *pingpong_offsets = NULL;
	u32 is_virtual_mixer_req = false;

	struct mdss_data_type *mdata = platform_get_drvdata(pdev);

	mdata->nmixers_intf = mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-mixer-intf-off");
	mdata->nmixers_wb = mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-mixer-wb-off");
	mdata->ndspp = mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-dspp-off");
	npingpong = mdss_mdp_parse_dt_prop_len(pdev,
				"qcom,mdss-pingpong-off");
	nmixers = mdata->nmixers_intf + mdata->nmixers_wb;

	rc = of_property_read_u32(pdev->dev.of_node,
			"qcom,max-mixer-width", &mdata->max_mixer_width);
	if (rc) {
		pr_err("device tree err: failed to get max mixer width\n");
		return -EINVAL;
	}

	if (mdata->nmixers_intf < mdata->ndspp) {
		pr_err("device tree err: no of dspp are greater than intf mixers\n");
		return -EINVAL;
	}

	if (mdata->nmixers_intf != npingpong) {
		pr_err("device tree err: unequal no of pingpong and intf mixers\n");
		return -EINVAL;
	}

	mixer_offsets = kcalloc(nmixers, sizeof(u32), GFP_KERNEL);
	if (!mixer_offsets)
		return -ENOMEM;

	dspp_offsets = kcalloc(mdata->ndspp, sizeof(u32), GFP_KERNEL);
	if (!dspp_offsets) {
		rc = -ENOMEM;
		goto dspp_alloc_fail;
	}
	pingpong_offsets = kcalloc(npingpong, sizeof(u32), GFP_KERNEL);
	if (!pingpong_offsets) {
		rc = -ENOMEM;
		goto pingpong_alloc_fail;
	}

	rc = mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-mixer-intf-off",
		mixer_offsets, mdata->nmixers_intf);
	if (rc)
		goto parse_done;

	mdata->has_separate_rotator = of_property_read_bool(pdev->dev.of_node,
		"qcom,mdss-has-separate-rotator");
	if (mdata->nmixers_wb) {
		rc = mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-mixer-wb-off",
				mixer_offsets + mdata->nmixers_intf,
				mdata->nmixers_wb);
		if (rc)
			goto parse_done;
	} else if (!mdata->has_separate_rotator) {
		/*
		 * If writeback mixers are not available, put the number of
		 * writeback mixers equal to number of DMA pipes so that
		 * later same number of virtual writeback mixers can be
		 * allocated.
		 */
		mdata->nmixers_wb = mdata->ndma_pipes;
		is_virtual_mixer_req = true;
	}

	rc = mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-dspp-off",
		dspp_offsets, mdata->ndspp);
	if (rc)
		goto parse_done;

	rc = mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-pingpong-off",
		pingpong_offsets, npingpong);
	if (rc)
		goto parse_done;

	rc = mdss_mdp_mixer_addr_setup(mdata, mixer_offsets,
			dspp_offsets, pingpong_offsets,
			MDSS_MDP_MIXER_TYPE_INTF, mdata->nmixers_intf);
	if (rc)
		goto parse_done;

	if (mdata->nmixers_wb) {
		if (is_virtual_mixer_req) {
			/*
			 * Replicate last interface mixers based on number of
			 * dma pipes available as virtual writeback mixers.
			 */
			rc = mdss_mdp_mixer_addr_setup(mdata, mixer_offsets +
				mdata->nmixers_intf - mdata->ndma_pipes,
				NULL, NULL, MDSS_MDP_MIXER_TYPE_WRITEBACK,
				mdata->nmixers_wb);
			if (rc)
				goto parse_done;
		} else {
			rc = mdss_mdp_mixer_addr_setup(mdata, mixer_offsets +
				mdata->nmixers_intf, NULL, NULL,
				MDSS_MDP_MIXER_TYPE_WRITEBACK,
				mdata->nmixers_wb);
			if (rc)
				goto parse_done;
		}
	}

parse_done:
	kfree(pingpong_offsets);
pingpong_alloc_fail:
	kfree(dspp_offsets);
dspp_alloc_fail:
	kfree(mixer_offsets);

	return rc;
}

static int mdss_mdp_cdm_addr_setup(struct mdss_data_type *mdata,
				   u32 *cdm_offsets, u32 len)
{
	struct mdss_mdp_cdm *head;
	u32 i = 0;

	head = devm_kzalloc(&mdata->pdev->dev, sizeof(struct mdss_mdp_cdm) *
				len, GFP_KERNEL);
	if (!head)
		return -ENOMEM;

	for (i = 0; i < len; i++) {
		head[i].num = i;
		head[i].base = (mdata->mdss_io.base) + cdm_offsets[i];
		atomic_set(&head[i].kref.refcount, 0);
		mutex_init(&head[i].lock);
		init_completion(&head[i].free_comp);
		pr_debug("%s: cdm off (%d) = %pK\n", __func__, i, head[i].base);
	}

	mdata->cdm_off = head;
	mutex_init(&mdata->cdm_lock);
	return 0;
}

static int mdss_mdp_parse_dt_cdm(struct platform_device *pdev)
{
	int rc = 0;
	u32 *cdm_offsets = NULL;
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);

	mdata->ncdm = mdss_mdp_parse_dt_prop_len(pdev, "qcom,mdss-cdm-off");

	if (!mdata->ncdm) {
		rc = 0;
		pr_debug("%s: No CDM offsets present in DT\n", __func__);
		goto end;
	}
	pr_debug("%s: cdm len == %d\n", __func__, mdata->ncdm);
	cdm_offsets = kcalloc(mdata->ncdm, sizeof(u32), GFP_KERNEL);
	if (!cdm_offsets) {
		rc = -ENOMEM;
		mdata->ncdm = 0;
		goto end;
	}

	rc = mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-cdm-off", cdm_offsets,
				       mdata->ncdm);
	if (rc) {
		pr_err("device tree err: failed to get cdm offsets\n");
		goto fail;
	}

	rc = mdss_mdp_cdm_addr_setup(mdata, cdm_offsets, mdata->ncdm);
	if (rc) {
		pr_err("%s: CDM address setup failed\n", __func__);
		goto fail;
	}

fail:
	kfree(cdm_offsets);
	if (rc)
		mdata->ncdm = 0;
end:
	return rc;
}

static int mdss_mdp_dsc_addr_setup(struct mdss_data_type *mdata,
				   u32 *dsc_offsets, u32 len)
{
	struct mdss_mdp_dsc *head;
	u32 i = 0;

	head = devm_kzalloc(&mdata->pdev->dev, sizeof(struct mdss_mdp_dsc) *
				len, GFP_KERNEL);
	if (!head)
		return -ENOMEM;

	for (i = 0; i < len; i++) {
		head[i].num = i;
		head[i].base = (mdata->mdss_io.base) + dsc_offsets[i];
		pr_debug("dsc off (%d) = %pK\n", i, head[i].base);
	}

	mdata->dsc_off = head;
	return 0;
}

static int mdss_mdp_parse_dt_dsc(struct platform_device *pdev)
{
	int rc = 0;
	u32 *dsc_offsets = NULL;
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);

	mdata->ndsc = mdss_mdp_parse_dt_prop_len(pdev, "qcom,mdss-dsc-off");
	if (!mdata->ndsc) {
		rc = 0;
		pr_debug("No DSC offsets present in DT\n");
		goto end;
	}
	pr_debug("dsc len == %d\n", mdata->ndsc);

	dsc_offsets = kcalloc(mdata->ndsc, sizeof(u32), GFP_KERNEL);
	if (!dsc_offsets) {
		rc = -ENOMEM;
		mdata->ndsc = 0;
		goto end;
	}

	rc = mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-dsc-off", dsc_offsets,
				       mdata->ndsc);
	if (rc) {
		pr_err("device tree err: failed to get cdm offsets\n");
		goto fail;
	}

	rc = mdss_mdp_dsc_addr_setup(mdata, dsc_offsets, mdata->ndsc);
	if (rc) {
		pr_err("%s: DSC address setup failed\n", __func__);
		goto fail;
	}

fail:
	kfree(dsc_offsets);
	if (rc)
		mdata->ndsc = 0;
end:
	return rc;
}

static int mdss_mdp_parse_dt_wb(struct platform_device *pdev)
{
	int rc = 0;
	u32 *wb_offsets = NULL;
	u32 num_wb_mixer, nwb_offsets, num_intf_wb = 0;
	const char *wfd_data;
	struct mdss_data_type *mdata;

	mdata = platform_get_drvdata(pdev);

	num_wb_mixer = mdata->nmixers_wb;

	wfd_data = of_get_property(pdev->dev.of_node,
					"qcom,mdss-wfd-mode", NULL);
	if (wfd_data && strcmp(wfd_data, "shared") != 0)
		num_intf_wb = 1;

	nwb_offsets =  mdss_mdp_parse_dt_prop_len(pdev,
			"qcom,mdss-wb-off");

	wb_offsets = kcalloc(nwb_offsets, sizeof(u32), GFP_KERNEL);
	if (!wb_offsets)
		return -ENOMEM;

	rc = mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-wb-off",
		wb_offsets, nwb_offsets);
	if (rc)
		goto wb_parse_done;

	rc = mdss_mdp_wb_addr_setup(mdata, num_wb_mixer, num_intf_wb);
	if (rc)
		goto wb_parse_done;

	mdata->nwb_offsets = nwb_offsets;
	mdata->wb_offsets = wb_offsets;

	return 0;

wb_parse_done:
	kfree(wb_offsets);
	return rc;
}

static int mdss_mdp_parse_dt_ctl(struct platform_device *pdev)
{
	int rc = 0;
	u32 *ctl_offsets = NULL;

	struct mdss_data_type *mdata = platform_get_drvdata(pdev);

	mdata->nctl = mdss_mdp_parse_dt_prop_len(pdev,
			"qcom,mdss-ctl-off");

	if (mdata->nctl < mdata->nwb) {
		pr_err("device tree err: number of ctl greater than wb\n");
		rc = -EINVAL;
		goto parse_done;
	}

	ctl_offsets = kcalloc(mdata->nctl, sizeof(u32), GFP_KERNEL);
	if (!ctl_offsets)
		return -ENOMEM;

	rc = mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-ctl-off",
		ctl_offsets, mdata->nctl);
	if (rc)
		goto parse_done;

	rc = mdss_mdp_ctl_addr_setup(mdata, ctl_offsets, mdata->nctl);
	if (rc)
		goto parse_done;

parse_done:
	kfree(ctl_offsets);

	return rc;
}

static int mdss_mdp_parse_dt_video_intf(struct platform_device *pdev)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	u32 count;
	u32 *offsets;
	int rc;


	count = mdss_mdp_parse_dt_prop_len(pdev, "qcom,mdss-intf-off");
	if (count == 0)
		return -EINVAL;

	offsets = kcalloc(count, sizeof(u32), GFP_KERNEL);
	if (!offsets)
		return -ENOMEM;

	rc = mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-intf-off",
			offsets, count);
	if (rc)
		goto parse_fail;

	rc = mdss_mdp_video_addr_setup(mdata, offsets, count);
	if (rc)
		pr_err("unable to setup video interfaces\n");

parse_fail:
	kfree(offsets);

	return rc;
}

static int mdss_mdp_update_smp_map(struct platform_device *pdev,
		const u32 *data, int len, int pipe_cnt,
		struct mdss_mdp_pipe *pipes)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	int i, j, k;
	u32 cnt, mmb;

	len /= sizeof(u32);
	for (i = 0, k = 0; i < len; k++) {
		struct mdss_mdp_pipe *pipe = NULL;

		if (k >= pipe_cnt) {
			pr_err("invalid fixed mmbs\n");
			return -EINVAL;
		}

		pipe = &pipes[k];

		cnt = be32_to_cpu(data[i++]);
		if (cnt == 0)
			continue;

		for (j = 0; j < cnt; j++) {
			mmb = be32_to_cpu(data[i++]);
			if (mmb > mdata->smp_mb_cnt) {
				pr_err("overflow mmb:%d pipe:%d: max:%d\n",
						mmb, k, mdata->smp_mb_cnt);
				return -EINVAL;
			}
			set_bit(mmb, pipe->smp_map[0].fixed);
		}
		if (bitmap_intersects(pipe->smp_map[0].fixed,
					mdata->mmb_alloc_map,
					mdata->smp_mb_cnt)) {
			pr_err("overlapping fixed mmb map\n");
			return -EINVAL;
		}
		bitmap_or(mdata->mmb_alloc_map, pipe->smp_map[0].fixed,
				mdata->mmb_alloc_map, mdata->smp_mb_cnt);
	}
	return 0;
}

static int mdss_mdp_parse_dt_smp(struct platform_device *pdev)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	u32 num;
	u32 data[2];
	int rc, len;
	const u32 *arr;

	num = mdss_mdp_parse_dt_prop_len(pdev, "qcom,mdss-smp-data");
	/*
	 * This property is optional for targets with fix pixel ram. Rest
	 * must provide no. of smp and size of each block.
	 */
	if (!num)
		return 0;
	else if (num != 2)
		return -EINVAL;

	rc = mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-smp-data", data, num);
	if (rc)
		return rc;

	rc = mdss_mdp_smp_setup(mdata, data[0], data[1]);

	if (rc) {
		pr_err("unable to setup smp data\n");
		return rc;
	}

	rc = of_property_read_u32(pdev->dev.of_node,
		"qcom,mdss-smp-mb-per-pipe", data);
	mdata->smp_mb_per_pipe = (!rc ? data[0] : 0);

	rc = 0;
	arr = of_get_property(pdev->dev.of_node,
			"qcom,mdss-pipe-rgb-fixed-mmb", &len);
	if (arr) {
		rc = mdss_mdp_update_smp_map(pdev, arr, len,
				mdata->nrgb_pipes, mdata->rgb_pipes);

		if (rc)
			pr_warn("unable to update smp map for RGB pipes\n");
	}

	arr = of_get_property(pdev->dev.of_node,
			"qcom,mdss-pipe-vig-fixed-mmb", &len);
	if (arr) {
		rc = mdss_mdp_update_smp_map(pdev, arr, len,
				mdata->nvig_pipes, mdata->vig_pipes);

		if (rc)
			pr_warn("unable to update smp map for VIG pipes\n");
	}
	return rc;
}

static void mdss_mdp_parse_dt_fudge_factors(struct platform_device *pdev,
	char *prop_name, struct mult_factor *ff)
{
	int rc;
	u32 data[2] = {1, 1};

	rc = mdss_mdp_parse_dt_handler(pdev, prop_name, data, 2);
	if (rc) {
		pr_debug("err reading %s\n", prop_name);
	} else {
		ff->numer = data[0];
		ff->denom = data[1];
	}
}

static int mdss_mdp_parse_dt_prefill(struct platform_device *pdev)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	struct mdss_prefill_data *prefill = &mdata->prefill_data;
	int rc;

	rc = of_property_read_u32(pdev->dev.of_node,
		"qcom,mdss-prefill-outstanding-buffer-bytes",
		&prefill->ot_bytes);
	if (rc) {
		pr_err("prefill outstanding buffer bytes not specified\n");
		return rc;
	}

	rc = of_property_read_u32(pdev->dev.of_node,
		"qcom,mdss-prefill-y-buffer-bytes", &prefill->y_buf_bytes);
	if (rc) {
		pr_err("prefill y buffer bytes not specified\n");
		return rc;
	}

	rc = of_property_read_u32(pdev->dev.of_node,
		"qcom,mdss-prefill-scaler-buffer-lines-bilinear",
		&prefill->y_scaler_lines_bilinear);
	if (rc) {
		pr_err("prefill scaler lines for bilinear not specified\n");
		return rc;
	}

	rc = of_property_read_u32(pdev->dev.of_node,
		"qcom,mdss-prefill-scaler-buffer-lines-caf",
		&prefill->y_scaler_lines_caf);
	if (rc) {
		pr_debug("prefill scaler lines for caf not specified\n");
		return rc;
	}

	rc = of_property_read_u32(pdev->dev.of_node,
		"qcom,mdss-prefill-post-scaler-buffer-pixels",
		&prefill->post_scaler_pixels);
	if (rc) {
		pr_err("prefill post scaler buffer pixels not specified\n");
		return rc;
	}

	rc = of_property_read_u32(pdev->dev.of_node,
		"qcom,mdss-prefill-pingpong-buffer-pixels",
		&prefill->pp_pixels);
	if (rc) {
		pr_err("prefill pingpong buffer lines not specified\n");
		return rc;
	}

	rc = of_property_read_u32(pdev->dev.of_node,
		"qcom,mdss-prefill-fbc-lines", &prefill->fbc_lines);
	if (rc)
		pr_debug("prefill FBC lines not specified\n");

	return 0;
}

static void mdss_mdp_parse_vbif_qos(struct platform_device *pdev)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	int rc;

	mdata->npriority_lvl = mdss_mdp_parse_dt_prop_len(pdev,
			"qcom,mdss-vbif-qos-rt-setting");
	if (mdata->npriority_lvl == MDSS_VBIF_QOS_REMAP_ENTRIES) {
		mdata->vbif_rt_qos = kcalloc(mdata->npriority_lvl,
					    sizeof(u32), GFP_KERNEL);
		if (!mdata->vbif_rt_qos)
			return;

		rc = mdss_mdp_parse_dt_handler(pdev,
			"qcom,mdss-vbif-qos-rt-setting",
				mdata->vbif_rt_qos, mdata->npriority_lvl);
		if (rc) {
			pr_debug("rt setting not found\n");
			return;
		}
	} else {
		mdata->npriority_lvl = 0;
		pr_debug("Invalid or no vbif qos rt setting\n");
		return;
	}

	mdata->npriority_lvl = mdss_mdp_parse_dt_prop_len(pdev,
			"qcom,mdss-vbif-qos-nrt-setting");
	if (mdata->npriority_lvl == MDSS_VBIF_QOS_REMAP_ENTRIES) {
		mdata->vbif_nrt_qos = kcalloc(mdata->npriority_lvl,
					      sizeof(u32), GFP_KERNEL);
		if (!mdata->vbif_nrt_qos)
			return;

		rc = mdss_mdp_parse_dt_handler(pdev,
			"qcom,mdss-vbif-qos-nrt-setting", mdata->vbif_nrt_qos,
				mdata->npriority_lvl);
		if (rc) {
			pr_debug("nrt setting not found\n");
			return;
		}
	} else {
		mdata->npriority_lvl = 0;
		pr_debug("Invalid or no vbif qos nrt seting\n");
	}
}

static void mdss_mdp_parse_max_bw_array(const u32 *arr,
		struct mdss_max_bw_settings *max_bw_settings, int count)
{
	int i;

	for (i = 0; i < count; i++) {
		max_bw_settings->mdss_max_bw_mode = be32_to_cpu(arr[i*2]);
		max_bw_settings->mdss_max_bw_val = be32_to_cpu(arr[(i*2)+1]);
		max_bw_settings++;
	}
}

static void mdss_mdp_parse_max_bandwidth(struct platform_device *pdev)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	struct mdss_max_bw_settings *max_bw_settings;
	int max_bw_settings_cnt = 0;
	const u32 *max_bw;

	max_bw = of_get_property(pdev->dev.of_node, "qcom,max-bw-settings",
			&max_bw_settings_cnt);

	if (!max_bw || !max_bw_settings_cnt) {
		pr_debug("MDSS max bandwidth settings not found\n");
		return;
	}

	max_bw_settings_cnt /= 2 * sizeof(u32);

	max_bw_settings = devm_kzalloc(&pdev->dev, sizeof(*max_bw_settings)
			* max_bw_settings_cnt, GFP_KERNEL);
	if (!max_bw_settings)
		return;

	mdss_mdp_parse_max_bw_array(max_bw, max_bw_settings,
			max_bw_settings_cnt);

	mdata->max_bw_settings = max_bw_settings;
	mdata->max_bw_settings_cnt = max_bw_settings_cnt;
}

static void mdss_mdp_parse_per_pipe_bandwidth(struct platform_device *pdev)
{

	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	struct mdss_max_bw_settings *max_bw_per_pipe_settings;
	int max_bw_settings_cnt = 0;
	const u32 *max_bw_settings;
	u32 max_bw, min_bw, threshold, i = 0;

	max_bw_settings = of_get_property(pdev->dev.of_node,
			"qcom,max-bandwidth-per-pipe-kbps",
			&max_bw_settings_cnt);

	if (!max_bw_settings || !max_bw_settings_cnt) {
		pr_debug("MDSS per pipe max bandwidth settings not found\n");
		return;
	}

	/* Support targets where a common per pipe max bw is provided */
	if ((max_bw_settings_cnt / sizeof(u32)) == 1) {
		mdata->max_bw_per_pipe = be32_to_cpu(max_bw_settings[0]);
		mdata->max_per_pipe_bw_settings = NULL;
		pr_debug("Common per pipe max bandwidth provided\n");
		return;
	}

	max_bw_settings_cnt /= 2 * sizeof(u32);

	max_bw_per_pipe_settings = devm_kzalloc(&pdev->dev,
		    sizeof(struct mdss_max_bw_settings) * max_bw_settings_cnt,
		    GFP_KERNEL);
	if (!max_bw_per_pipe_settings) {
		pr_err("Memory allocation failed for max_bw_settings\n");
		return;
	}

	mdss_mdp_parse_max_bw_array(max_bw_settings, max_bw_per_pipe_settings,
					max_bw_settings_cnt);
	mdata->max_per_pipe_bw_settings = max_bw_per_pipe_settings;
	mdata->mdss_per_pipe_bw_cnt = max_bw_settings_cnt;

	/* Calculate min and max allowed per pipe BW */
	min_bw = mdata->max_bw_high;
	max_bw = 0;

	while (i < max_bw_settings_cnt) {
		threshold = mdata->max_per_pipe_bw_settings[i].mdss_max_bw_val;
		if (threshold > max_bw)
			max_bw = threshold;
		if (threshold < min_bw)
			min_bw = threshold;
		++i;
	}
	mdata->max_bw_per_pipe = max_bw;
	mdata->min_bw_per_pipe = min_bw;
}

static int mdss_mdp_parse_dt_misc(struct platform_device *pdev)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	u32 data, slave_pingpong_off;
	const char *wfd_data;
	int rc;
	struct property *prop = NULL;

	rc = of_property_read_u32(pdev->dev.of_node, "qcom,mdss-rot-block-size",
		&data);
	mdata->rot_block_size = (!rc ? data : 128);

	rc = of_property_read_u32(pdev->dev.of_node,
		"qcom,mdss-default-ot-rd-limit", &data);
	mdata->default_ot_rd_limit = (!rc ? data : 0);

	rc = of_property_read_u32(pdev->dev.of_node,
		"qcom,mdss-default-ot-wr-limit", &data);
	mdata->default_ot_wr_limit = (!rc ? data : 0);

	mdata->has_non_scalar_rgb = of_property_read_bool(pdev->dev.of_node,
		"qcom,mdss-has-non-scalar-rgb");
	mdata->has_bwc = of_property_read_bool(pdev->dev.of_node,
					       "qcom,mdss-has-bwc");
	mdata->has_decimation = of_property_read_bool(pdev->dev.of_node,
		"qcom,mdss-has-decimation");
	mdata->has_no_lut_read = of_property_read_bool(pdev->dev.of_node,
		"qcom,mdss-no-lut-read");
	mdata->needs_hist_vote = !(of_property_read_bool(pdev->dev.of_node,
		"qcom,mdss-no-hist-vote"));
	wfd_data = of_get_property(pdev->dev.of_node,
					"qcom,mdss-wfd-mode", NULL);
	if (wfd_data) {
		pr_debug("wfd mode: %s\n", wfd_data);
		if (!strcmp(wfd_data, "intf")) {
			mdata->wfd_mode = MDSS_MDP_WFD_INTERFACE;
		} else if (!strcmp(wfd_data, "shared")) {
			mdata->wfd_mode = MDSS_MDP_WFD_SHARED;
		} else if (!strcmp(wfd_data, "dedicated")) {
			mdata->wfd_mode = MDSS_MDP_WFD_DEDICATED;
		} else {
			pr_debug("wfd default mode: Shared\n");
			mdata->wfd_mode = MDSS_MDP_WFD_SHARED;
		}
	} else {
		pr_warn("wfd mode not configured. Set to default: Shared\n");
		mdata->wfd_mode = MDSS_MDP_WFD_SHARED;
	}

	mdata->has_src_split = of_property_read_bool(pdev->dev.of_node,
		 "qcom,mdss-has-source-split");
	mdata->has_fixed_qos_arbiter_enabled =
			of_property_read_bool(pdev->dev.of_node,
		 "qcom,mdss-has-fixed-qos-arbiter-enabled");
	mdata->idle_pc_enabled = of_property_read_bool(pdev->dev.of_node,
		 "qcom,mdss-idle-power-collapse-enabled");

	prop = of_find_property(pdev->dev.of_node, "batfet-supply", NULL);
	mdata->batfet_required = prop ? true : false;
	mdata->en_svs_high = of_property_read_bool(pdev->dev.of_node,
		"qcom,mdss-en-svs-high");
	if (!mdata->en_svs_high)
		pr_debug("%s: svs_high is not enabled\n", __func__);
	rc = of_property_read_u32(pdev->dev.of_node,
		 "qcom,mdss-highest-bank-bit", &(mdata->highest_bank_bit));
	if (rc)
		pr_debug("Could not read optional property: highest bank bit\n");

	mdata->has_pingpong_split = of_property_read_bool(pdev->dev.of_node,
		 "qcom,mdss-has-pingpong-split");

	if (mdata->has_pingpong_split) {
		rc = of_property_read_u32(pdev->dev.of_node,
				"qcom,mdss-slave-pingpong-off",
				&slave_pingpong_off);
		if (rc) {
			pr_err("Error in device tree: slave pingpong offset\n");
			return rc;
		}
		mdata->slave_pingpong_base = mdata->mdss_io.base +
			slave_pingpong_off;
		rc = mdss_mdp_parse_dt_ppb_off(pdev);
		if (rc) {
			pr_err("Error in device tree: ppb offset not configured\n");
			return rc;
		}
	}

	/*
	 * 2x factor on AB because bus driver will divide by 2
	 * due to 2x ports to BIMC
	 */
	mdata->ab_factor.numer = 2;
	mdata->ab_factor.denom = 1;
	mdss_mdp_parse_dt_fudge_factors(pdev, "qcom,mdss-ab-factor",
		&mdata->ab_factor);

	/*
	 * 1.2 factor on ib as default value. This value is
	 * experimentally determined and should be tuned in device
	 * tree.
	 */
	mdata->ib_factor.numer = 6;
	mdata->ib_factor.denom = 5;
	mdss_mdp_parse_dt_fudge_factors(pdev, "qcom,mdss-ib-factor",
		&mdata->ib_factor);

	/*
	 * Set overlap ib value equal to ib by default. This value can
	 * be tuned in device tree to be different from ib.
	 * This factor apply when the max bandwidth per pipe
	 * is the overlap BW.
	 */
	mdata->ib_factor_overlap.numer = mdata->ib_factor.numer;
	mdata->ib_factor_overlap.denom = mdata->ib_factor.denom;
	mdss_mdp_parse_dt_fudge_factors(pdev, "qcom,mdss-ib-factor-overlap",
		&mdata->ib_factor_overlap);

	mdata->clk_factor.numer = 1;
	mdata->clk_factor.denom = 1;
	mdss_mdp_parse_dt_fudge_factors(pdev, "qcom,mdss-clk-factor",
		&mdata->clk_factor);

	rc = of_property_read_u32(pdev->dev.of_node,
			"qcom,max-bandwidth-low-kbps", &mdata->max_bw_low);
	if (rc)
		pr_debug("max bandwidth (low) property not specified\n");

	rc = of_property_read_u32(pdev->dev.of_node,
			"qcom,max-bandwidth-high-kbps", &mdata->max_bw_high);
	if (rc)
		pr_debug("max bandwidth (high) property not specified\n");

	mdss_mdp_parse_per_pipe_bandwidth(pdev);

	mdss_mdp_parse_max_bandwidth(pdev);

	mdata->nclk_lvl = mdss_mdp_parse_dt_prop_len(pdev,
					"qcom,mdss-clk-levels");

	if (mdata->nclk_lvl) {
		mdata->clock_levels = kcalloc(mdata->nclk_lvl, sizeof(u32),
							GFP_KERNEL);
		if (!mdata->clock_levels)
			return -ENOMEM;

		rc = mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-clk-levels",
			mdata->clock_levels, mdata->nclk_lvl);
		if (rc)
			pr_debug("clock levels not found\n");
	}

	mdss_mdp_parse_vbif_qos(pdev);
	mdata->traffic_shaper_en = of_property_read_bool(pdev->dev.of_node,
		 "qcom,mdss-traffic-shaper-enabled");
	mdata->has_rot_dwnscale = of_property_read_bool(pdev->dev.of_node,
		"qcom,mdss-has-rotator-downscale");
	if (mdata->has_rot_dwnscale) {
		rc = of_property_read_u32(pdev->dev.of_node,
			"qcom,mdss-rot-downscale-min",
			&mdata->rot_dwnscale_min);
		if (rc)
			pr_err("Min rotator downscale property not specified\n");

		rc = of_property_read_u32(pdev->dev.of_node,
			"qcom,mdss-rot-downscale-max",
			&mdata->rot_dwnscale_max);
		if (rc)
			pr_err("Max rotator downscale property not specified\n");
	}

	rc = of_property_read_u32(pdev->dev.of_node,
		"qcom,mdss-dram-channels", &mdata->bus_channels);
	if (rc)
		pr_debug("number of channels property not specified\n");

	rc = of_property_read_u32(pdev->dev.of_node,
			"qcom,max-pipe-width", &mdata->max_pipe_width);
	if (rc) {
		pr_debug("max pipe width not specified. Using default value\n");
		mdata->max_pipe_width = DEFAULT_MDP_PIPE_WIDTH;
	}
	return 0;
}

static int mdss_mdp_parse_dt_ad_cfg(struct platform_device *pdev)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	u32 *ad_offsets = NULL;
	int rc;

	mdata->nad_cfgs = mdss_mdp_parse_dt_prop_len(pdev, "qcom,mdss-ad-off");

	if (mdata->nad_cfgs == 0) {
		mdata->ad_cfgs = NULL;
		return 0;
	}

	if (mdata->nad_cfgs > mdata->nmixers_intf)
		return -EINVAL;


	mdata->has_wb_ad = of_property_read_bool(pdev->dev.of_node,
		"qcom,mdss-has-wb-ad");

	ad_offsets = kcalloc(mdata->nad_cfgs, sizeof(u32), GFP_KERNEL);
	if (!ad_offsets)
		return -ENOMEM;

	rc = mdss_mdp_parse_dt_handler(pdev, "qcom,mdss-ad-off", ad_offsets,
					mdata->nad_cfgs);
	if (rc)
		goto parse_done;

	rc = mdss_mdp_ad_addr_setup(mdata, ad_offsets);
	if (rc)
		pr_err("unable to setup assertive display\n");

parse_done:
	kfree(ad_offsets);
	return rc;
}

static int mdss_mdp_parse_dt_ppb_off(struct platform_device *pdev)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);
	u32 len, index;
	const u32 *arr;

	arr = of_get_property(pdev->dev.of_node, "qcom,mdss-ppb-ctl-off", &len);
	if (arr) {
		mdata->nppb_ctl = len / sizeof(u32);
		mdata->ppb_ctl = devm_kzalloc(&mdata->pdev->dev,
				sizeof(u32) * mdata->nppb_ctl, GFP_KERNEL);

		if (mdata->ppb_ctl == NULL)
			return -ENOMEM;

		for (index = 0; index <  mdata->nppb_ctl; index++)
			mdata->ppb_ctl[index] = be32_to_cpu(arr[index]);
	}

	arr = of_get_property(pdev->dev.of_node, "qcom,mdss-ppb-cfg-off", &len);
	if (arr) {
		mdata->nppb_cfg = len / sizeof(u32);
		mdata->ppb_cfg = devm_kzalloc(&mdata->pdev->dev,
				sizeof(u32) * mdata->nppb_cfg, GFP_KERNEL);

		if (mdata->ppb_cfg == NULL)
			return -ENOMEM;

		for (index = 0; index <  mdata->nppb_cfg; index++)
			mdata->ppb_cfg[index] = be32_to_cpu(arr[index]);
	}
	return 0;
}

#ifdef CONFIG_QCOM_BUS_SCALING
static int mdss_mdp_parse_dt_bus_scale(struct platform_device *pdev)
{
	int rc, paths;
	struct device_node *node;
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);

	rc = of_property_read_u32(pdev->dev.of_node,
			"qcom,msm-bus,num-paths", &paths);
	if (rc) {
		pr_err("Error. qcom,msm-bus,num-paths prop not found.rc=%d\n",
			rc);
		return rc;
	}
	mdss_res->axi_port_cnt = paths;

	rc = of_property_read_u32(pdev->dev.of_node,
			"qcom,mdss-num-nrt-paths", &mdata->nrt_axi_port_cnt);
	if (rc && mdata->has_fixed_qos_arbiter_enabled) {
		pr_err("Error. qcom,mdss-num-nrt-paths prop not found.rc=%d\n",
			rc);
		return rc;
	}
	rc = 0;

	mdata->bus_scale_table = msm_bus_cl_get_pdata(pdev);
	if (IS_ERR_OR_NULL(mdata->bus_scale_table)) {
		rc = PTR_ERR(mdata->bus_scale_table);
		if (!rc)
			rc = -EINVAL;
		pr_err("msm_bus_cl_get_pdata failed. rc=%d\n", rc);
		mdata->bus_scale_table = NULL;
		return rc;
	}

	/*
	 * if mdss-reg-bus is not found then default table is picked
	 * hence below code wont return error.
	 */
	node = of_get_child_by_name(pdev->dev.of_node, "qcom,mdss-reg-bus");
	if (node) {
		mdata->reg_bus_scale_table =
			msm_bus_pdata_from_node(pdev, node);
		if (IS_ERR_OR_NULL(mdata->reg_bus_scale_table)) {
			rc = PTR_ERR(mdata->reg_bus_scale_table);
			if (!rc)
				pr_err("bus_pdata reg_bus failed rc=%d\n", rc);
			rc = 0;
			mdata->reg_bus_scale_table = NULL;
		}
	} else {
		rc = 0;
		mdata->reg_bus_scale_table = NULL;
		pr_debug("mdss-reg-bus not found\n");
	}

	node = of_get_child_by_name(pdev->dev.of_node, "qcom,mdss-hw-rt-bus");
	if (node) {
		mdata->hw_rt_bus_scale_table =
			msm_bus_pdata_from_node(pdev, node);
		if (IS_ERR_OR_NULL(mdata->hw_rt_bus_scale_table)) {
			rc = PTR_ERR(mdata->hw_rt_bus_scale_table);
			if (!rc)
				pr_err("hw_rt_bus_scale failed rc=%d\n", rc);
			rc = 0;
			mdata->hw_rt_bus_scale_table = NULL;
		}
	} else {
		rc = 0;
		mdata->hw_rt_bus_scale_table = NULL;
		pr_debug("mdss-hw-rt-bus not found\n");
	}

	return rc;
}
#else
__maybe_unused
static int mdss_mdp_parse_dt_bus_scale(struct platform_device *pdev)
{
	return 0;
}

#endif

static int mdss_mdp_parse_dt_handler(struct platform_device *pdev,
		char *prop_name, u32 *offsets, int len)
{
	int rc;

	rc = of_property_read_u32_array(pdev->dev.of_node, prop_name,
					offsets, len);
	if (rc) {
		pr_err("Error from prop %s : u32 array read\n", prop_name);
		return -EINVAL;
	}

	return 0;
}

static int mdss_mdp_parse_dt_prop_len(struct platform_device *pdev,
				      char *prop_name)
{
	int len = 0;

	of_find_property(pdev->dev.of_node, prop_name, &len);

	if (len < 1) {
		pr_debug("prop %s : doesn't exist in device tree\n",
			prop_name);
		return 0;
	}

	len = len/sizeof(u32);

	return len;
}

struct mdss_data_type *mdss_mdp_get_mdata(void)
{
	return mdss_res;
}

void mdss_mdp_batfet_ctrl(struct mdss_data_type *mdata, int enable)
{
	int ret;

	if (!mdata->batfet_required)
		return;

	if (!mdata->batfet) {
		if (enable) {
			mdata->batfet = devm_regulator_get(&mdata->pdev->dev,
				"batfet");
			if (IS_ERR_OR_NULL(mdata->batfet)) {
				pr_debug("unable to get batfet reg. rc=%d\n",
					PTR_RET(mdata->batfet));
				mdata->batfet = NULL;
				return;
			}
		} else {
			pr_debug("Batfet regulator disable w/o enable\n");
			return;
		}
	}

	if (enable) {
		ret = regulator_enable(mdata->batfet);
		if (ret)
			pr_err("regulator_enable failed\n");
	} else {
		regulator_disable(mdata->batfet);
	}
}

/**
 * mdss_is_ready() - checks if mdss is probed and ready
 *
 * Checks if mdss resources have been initialized
 *
 * returns true if mdss is ready, else returns false
 */
bool mdss_is_ready(void)
{
	return mdss_mdp_get_mdata() ? true : false;
}
EXPORT_SYMBOL(mdss_mdp_get_mdata);

/**
 * mdss_panel_intf_type() - checks if a given intf type is primary
 * @intf_val: panel interface type of the individual controller
 *
 * Individual controller queries with MDP to check if it is
 * configured as the primary interface.
 *
 * returns a pointer to the configured structure mdss_panel_cfg
 * to the controller that's configured as the primary panel interface.
 * returns NULL on error or if @intf_val is not the configured
 * controller.
 */
struct mdss_panel_cfg *mdss_panel_intf_type(int intf_val)
{
	if (!mdss_res || !mdss_res->pan_cfg.init_done)
		return ERR_PTR(-EPROBE_DEFER);

	if (mdss_res->pan_cfg.pan_intf == intf_val)
		return &mdss_res->pan_cfg;
	else
		return NULL;
}
EXPORT_SYMBOL(mdss_panel_intf_type);

struct irq_info *mdss_intr_line()
{
	return mdss_mdp_hw.irq_info;
}
EXPORT_SYMBOL(mdss_intr_line);

int mdss_mdp_wait_for_xin_halt(u32 xin_id, bool is_vbif_nrt)
{
	void __iomem *vbif_base;
	u32 status;
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	u32 idle_mask = BIT(xin_id);
	int rc;

	vbif_base = is_vbif_nrt ? mdata->vbif_nrt_io.base :
				mdata->vbif_io.base;

	rc = readl_poll_timeout(vbif_base + MMSS_VBIF_XIN_HALT_CTRL1,
		status, (status & idle_mask),
		1000, XIN_HALT_TIMEOUT_US);
	if (rc == -ETIMEDOUT) {
		pr_err("VBIF client %d not halting. TIMEDOUT.\n",
			xin_id);
		MDSS_XLOG_TOUT_HANDLER("mdp", "vbif", "vbif_nrt",
			"dbg_bus", "vbif_dbg_bus", "panic");
	} else {
		pr_debug("VBIF client %d is halted\n", xin_id);
	}

	return rc;
}

/**
 * force_on_xin_clk() - enable/disable the force-on for the pipe clock
 * @bit_off: offset of the bit to enable/disable the force-on.
 * @reg_off: register offset for the clock control.
 * @enable: boolean to indicate if the force-on of the clock needs to be
 * enabled or disabled.
 *
 * This function returns:
 * true - if the clock is forced-on by this function
 * false - if the clock was already forced on
 * It is the caller responsibility to check if this function is forcing
 * the clock on; if so, it will need to remove the force of the clock,
 * otherwise it should avoid to remove the force-on.
 * Clocks must be on when calling this function.
 */
bool force_on_xin_clk(u32 bit_off, u32 clk_ctl_reg_off, bool enable)
{
	u32 val;
	u32 force_on_mask;
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	bool clk_forced_on = false;

	force_on_mask = BIT(bit_off);
	val = readl_relaxed(mdata->mdp_base + clk_ctl_reg_off);

	clk_forced_on = !(force_on_mask & val);

	if (true == enable)
		val |= force_on_mask;
	else
		val &= ~force_on_mask;

	writel_relaxed(val, mdata->mdp_base + clk_ctl_reg_off);

	return clk_forced_on;
}

static void apply_dynamic_ot_limit(u32 *ot_lim,
	struct mdss_mdp_set_ot_params *params)
{
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	u32 res, read_vbif_ot;
	u32 rot_ot = 4;

	if (false == test_bit(MDSS_QOS_OTLIM, mdata->mdss_qos_map))
		return;

	/* Dynamic OT setting done only for rotator and WFD */
	if (!((params->is_rot && params->is_yuv) || params->is_wb))
		return;

	res = params->width * params->height;

	pr_debug("w:%d h:%d rot:%d yuv:%d wb:%d res:%d fps:%d\n",
		params->width, params->height, params->is_rot,
		params->is_yuv, params->is_wb, res, params->frame_rate);

	switch (mdata->mdp_rev) {
	case MDSS_MDP_HW_REV_114:
		/*
		 * MDP rev is same for msm8937 and msm8940, but rotator OT
		 * recommendations are different. Setting it based on AXI OT.
		 */
		read_vbif_ot = MDSS_VBIF_READ(mdata, MMSS_VBIF_OUT_RD_LIM_CONF0,
					false);
		rot_ot  = (read_vbif_ot == 0x10) ? 4 : 8;
		/* fall-through */
	case MDSS_MDP_HW_REV_115:
	case MDSS_MDP_HW_REV_116:
		if ((res <= RES_1080p) && (params->frame_rate <= 30))
			*ot_lim = 2;
		else if (params->is_rot && params->is_yuv)
			*ot_lim = rot_ot;
		else
			*ot_lim = 6;
		break;
	default:
		if (res <= RES_1080p) {
			*ot_lim = 2;
		} else if (res <= RES_UHD) {
			if (params->is_rot && params->is_yuv)
				*ot_lim = 8;
			else
				*ot_lim = 16;
		}
		break;
	}
}

static u32 get_ot_limit(u32 reg_off, u32 bit_off,
	struct mdss_mdp_set_ot_params *params)
{
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	u32 ot_lim = 0;
	u32 is_vbif_nrt, val;

	if (mdata->default_ot_wr_limit &&
		(params->reg_off_vbif_lim_conf == MMSS_VBIF_WR_LIM_CONF))
		ot_lim = mdata->default_ot_wr_limit;
	else if (mdata->default_ot_rd_limit &&
		(params->reg_off_vbif_lim_conf == MMSS_VBIF_RD_LIM_CONF))
		ot_lim = mdata->default_ot_rd_limit;

	/*
	 * If default ot is not set from dt,
	 * then do not configure it.
	 */
	if (ot_lim == 0)
		goto exit;

	/* Modify the limits if the target and the use case requires it */
	apply_dynamic_ot_limit(&ot_lim, params);

	is_vbif_nrt = params->is_vbif_nrt;
	val = MDSS_VBIF_READ(mdata, reg_off, is_vbif_nrt);
	val &= (0xFF << bit_off);
	val = val >> bit_off;

	if (val == ot_lim)
		ot_lim = 0;

exit:
	pr_debug("ot_lim=%d\n", ot_lim);
	return ot_lim;
}

void mdss_mdp_set_ot_limit(struct mdss_mdp_set_ot_params *params)
{
	struct mdss_data_type *mdata = mdss_mdp_get_mdata();
	u32 ot_lim;
	u32 reg_off_vbif_lim_conf = (params->xin_id / 4) * 4 +
		params->reg_off_vbif_lim_conf;
	u32 bit_off_vbif_lim_conf = (params->xin_id % 4) * 8;
	bool is_vbif_nrt = params->is_vbif_nrt;
	u32 reg_val;
	bool forced_on;

	ot_lim = get_ot_limit(
		reg_off_vbif_lim_conf,
		bit_off_vbif_lim_conf,
		params) & 0xFF;

	if (ot_lim == 0)
		goto exit;

	trace_mdp_perf_set_ot(params->num, params->xin_id, ot_lim,
		is_vbif_nrt);

	mutex_lock(&mdata->reg_lock);

	forced_on = force_on_xin_clk(params->bit_off_mdp_clk_ctrl,
		params->reg_off_mdp_clk_ctrl, true);

	reg_val = MDSS_VBIF_READ(mdata, reg_off_vbif_lim_conf,
		is_vbif_nrt);
	reg_val &= ~(0xFF << bit_off_vbif_lim_conf);
	reg_val |= (ot_lim) << bit_off_vbif_lim_conf;
	MDSS_VBIF_WRITE(mdata, reg_off_vbif_lim_conf, reg_val,
		is_vbif_nrt);

	reg_val = MDSS_VBIF_READ(mdata, MMSS_VBIF_XIN_HALT_CTRL0,
		is_vbif_nrt);
	MDSS_VBIF_WRITE(mdata, MMSS_VBIF_XIN_HALT_CTRL0,
		reg_val | BIT(params->xin_id), is_vbif_nrt);

	mutex_unlock(&mdata->reg_lock);
	mdss_mdp_wait_for_xin_halt(params->xin_id, is_vbif_nrt);
	mutex_lock(&mdata->reg_lock);

	reg_val = MDSS_VBIF_READ(mdata, MMSS_VBIF_XIN_HALT_CTRL0,
		is_vbif_nrt);
	MDSS_VBIF_WRITE(mdata, MMSS_VBIF_XIN_HALT_CTRL0,
		reg_val & ~BIT(params->xin_id), is_vbif_nrt);

	if (forced_on)
		force_on_xin_clk(params->bit_off_mdp_clk_ctrl,
			params->reg_off_mdp_clk_ctrl, false);

	mutex_unlock(&mdata->reg_lock);

exit:
	return;
}

#define RPM_MISC_REQ_TYPE 0x6373696d
#define RPM_MISC_REQ_SVS_PLUS_KEY 0x2B737673

static void mdss_mdp_config_cx_voltage(struct mdss_data_type *mdata, int enable)
{
	int ret = 0;
	static struct msm_rpm_kvp rpm_kvp;
	static uint8_t svs_en;

	if (!mdata->en_svs_high)
		return;

	if (!rpm_kvp.key) {
		rpm_kvp.key = RPM_MISC_REQ_SVS_PLUS_KEY;
		rpm_kvp.length = sizeof(uint64_t);
		pr_debug("%s: Initialized rpm_kvp structure\n", __func__);
	}

	if (enable) {
		svs_en = 1;
		rpm_kvp.data = &svs_en;
		pr_debug("%s: voting for svs high\n", __func__);
		ret = msm_rpm_send_message(MSM_RPM_CTX_ACTIVE_SET,
					RPM_MISC_REQ_TYPE, 0,
					&rpm_kvp, 1);
		if (ret)
			pr_err("vote for active_set svs high failed: %d\n",
					ret);
		ret = msm_rpm_send_message(MSM_RPM_CTX_SLEEP_SET,
					RPM_MISC_REQ_TYPE, 0,
					&rpm_kvp, 1);
		if (ret)
			pr_err("vote for sleep_set svs high failed: %d\n",
					ret);
	} else {
		svs_en = 0;
		rpm_kvp.data = &svs_en;
		pr_debug("%s: Removing vote for svs high\n", __func__);
		ret = msm_rpm_send_message(MSM_RPM_CTX_ACTIVE_SET,
					RPM_MISC_REQ_TYPE, 0,
					&rpm_kvp, 1);
		if (ret)
			pr_err("Remove vote:active_set svs high failed: %d\n",
					ret);
		ret = msm_rpm_send_message(MSM_RPM_CTX_SLEEP_SET,
					RPM_MISC_REQ_TYPE, 0,
					&rpm_kvp, 1);
		if (ret)
			pr_err("Remove vote:sleep_set svs high failed: %d\n",
					ret);
	}
}

static int mdss_mdp_cx_ctrl(struct mdss_data_type *mdata, int enable)
{
	int rc = 0;

	if (!mdata->vdd_cx)
		return rc;

	if (enable) {
		rc = regulator_set_voltage(
				mdata->vdd_cx,
				RPM_REGULATOR_CORNER_SVS_SOC,
				RPM_REGULATOR_CORNER_SUPER_TURBO);
		if (rc < 0)
			goto vreg_set_voltage_fail;

		pr_debug("Enabling CX power rail\n");
		rc = regulator_enable(mdata->vdd_cx);
		if (rc) {
			pr_err("Failed to enable regulator.\n");
			return rc;
		}
	} else {
		pr_debug("Disabling CX power rail\n");
		rc = regulator_disable(mdata->vdd_cx);
		if (rc) {
			pr_err("Failed to disable regulator.\n");
			return rc;
		}
		rc = regulator_set_voltage(
				mdata->vdd_cx,
				RPM_REGULATOR_CORNER_NONE,
				RPM_REGULATOR_CORNER_SUPER_TURBO);
		if (rc < 0)
			goto vreg_set_voltage_fail;
	}

	return rc;

vreg_set_voltage_fail:
	pr_err("Set vltg fail\n");
	return rc;
}

/**
 * mdss_mdp_footswitch_ctrl() - Disable/enable MDSS GDSC and CX/Batfet rails
 * @mdata: MDP private data
 * @on: 1 to turn on footswitch, 0 to turn off footswitch
 *
 * When no active references to the MDP device node and it's child nodes are
 * held, MDSS GDSC can be turned off. However, any any panels are still
 * active (but likely in an idle state), the vote for the CX and the batfet
 * rails should not be released.
 */
static void mdss_mdp_footswitch_ctrl(struct mdss_data_type *mdata, int on)
{
	int ret;
	int active_cnt = 0;

	if (!mdata->fs)
		return;

	MDSS_XLOG(on, mdata->fs_ena, mdata->idle_pc, mdata->en_svs_high,
		atomic_read(&mdata->active_intf_cnt));

	if (on) {
		if (!mdata->fs_ena) {
			pr_debug("Enable MDP FS\n");
			if (mdata->venus) {
				ret = regulator_enable(mdata->venus);
				if (ret)
					pr_err("venus failed to enable\n");
			}

			ret = regulator_enable(mdata->fs);
			if (ret)
				pr_warn("Footswitch failed to enable\n");
			if (!mdata->idle_pc) {
				mdss_mdp_cx_ctrl(mdata, true);
				mdss_mdp_batfet_ctrl(mdata, true);
			}
		}
		if (mdata->en_svs_high)
			mdss_mdp_config_cx_voltage(mdata, true);
		mdata->fs_ena = true;
	} else {
		if (mdata->fs_ena) {
			pr_debug("Disable MDP FS\n");
			active_cnt = atomic_read(&mdata->active_intf_cnt);
			if (active_cnt != 0) {
				/*
				 * Turning off GDSC while overlays are still
				 * active.
				 */
				mdata->idle_pc = true;
				pr_debug("idle pc. active overlays=%d\n",
					active_cnt);
				mdss_mdp_memory_retention_enter();
			} else {
				mdss_mdp_cx_ctrl(mdata, false);
				mdss_mdp_batfet_ctrl(mdata, false);
			}
			if (mdata->en_svs_high)
				mdss_mdp_config_cx_voltage(mdata, false);
			regulator_disable(mdata->fs);
			if (mdata->venus)
				regulator_disable(mdata->venus);
		}
		mdata->fs_ena = false;
	}
}

int mdss_mdp_secure_display_ctrl(struct mdss_data_type *mdata,
	unsigned int enable)
{
	struct sd_ctrl_req {
		unsigned int enable;
	} __attribute__ ((__packed__)) request;
	unsigned int resp = -1;
	int ret = 0;
	struct scm_desc desc;

	if ((enable && (mdss_get_sd_client_cnt() > 0)) ||
		(!enable && (mdss_get_sd_client_cnt() > 1))) {
		mdss_update_sd_client(mdata, enable);
		return ret;
	}

	desc.args[0] = request.enable = enable;
	desc.arginfo = SCM_ARGS(1);

	if (!is_scm_armv8()) {
		ret = scm_call(SCM_SVC_MP, MEM_PROTECT_SD_CTRL,
			&request, sizeof(request), &resp, sizeof(resp));
	} else {
		ret = scm_call2(SCM_SIP_FNID(SCM_SVC_MP,
				mem_protect_sd_ctrl_id), &desc);
		resp = desc.ret[0];
	}

	pr_debug("scm_call MEM_PROTECT_SD_CTRL(%u): ret=%d, resp=%x",
				enable, ret, resp);
	if (ret)
		return ret;

	mdss_update_sd_client(mdata, enable);
	return resp;
}

static inline int mdss_mdp_suspend_sub(struct mdss_data_type *mdata)
{
	mdata->suspend_fs_ena = mdata->fs_ena;
	mdss_mdp_footswitch_ctrl(mdata, false);

	pr_debug("suspend done fs=%d\n", mdata->suspend_fs_ena);

	return 0;
}

static inline int mdss_mdp_resume_sub(struct mdss_data_type *mdata)
{
	if (mdata->suspend_fs_ena)
		mdss_mdp_footswitch_ctrl(mdata, true);

	pr_debug("resume done fs=%d\n", mdata->suspend_fs_ena);

	return 0;
}

#ifdef CONFIG_PM_SLEEP
static int mdss_mdp_pm_suspend(struct device *dev)
{
	struct mdss_data_type *mdata;

	mdata = dev_get_drvdata(dev);
	if (!mdata)
		return -ENODEV;

	dev_dbg(dev, "display pm suspend\n");

	return mdss_mdp_suspend_sub(mdata);
}

static int mdss_mdp_pm_resume(struct device *dev)
{
	struct mdss_data_type *mdata;

	mdata = dev_get_drvdata(dev);
	if (!mdata)
		return -ENODEV;

	dev_dbg(dev, "display pm resume\n");

	/*
	 * It is possible that the runtime status of the mdp device may
	 * have been active when the system was suspended. Reset the runtime
	 * status to suspended state after a complete system resume.
	 */
	pm_runtime_disable(dev);
	pm_runtime_set_suspended(dev);
	pm_runtime_enable(dev);

	return mdss_mdp_resume_sub(mdata);
}
#endif

#if defined(CONFIG_PM) && !defined(CONFIG_PM_SLEEP)
static int mdss_mdp_suspend(struct platform_device *pdev, pm_message_t state)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);

	if (!mdata)
		return -ENODEV;

	dev_dbg(&pdev->dev, "display suspend\n");

	return mdss_mdp_suspend_sub(mdata);
}

static int mdss_mdp_resume(struct platform_device *pdev)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);

	if (!mdata)
		return -ENODEV;

	dev_dbg(&pdev->dev, "display resume\n");

	return mdss_mdp_resume_sub(mdata);
}
#else
#define mdss_mdp_suspend NULL
#define mdss_mdp_resume NULL
#endif

#ifdef CONFIG_PM
static int mdss_mdp_runtime_resume(struct device *dev)
{
	struct mdss_data_type *mdata = dev_get_drvdata(dev);
	bool device_on = true;

	if (!mdata)
		return -ENODEV;

	dev_dbg(dev, "pm_runtime: resuming. active overlay cnt=%d\n",
		atomic_read(&mdata->active_intf_cnt));

	/* do not resume panels when coming out of idle power collapse */
	if (!mdata->idle_pc)
		device_for_each_child(dev, &device_on, mdss_fb_suspres_panel);
	mdss_mdp_footswitch_ctrl(mdata, true);

	return 0;
}

static int mdss_mdp_runtime_idle(struct device *dev)
{
	struct mdss_data_type *mdata = dev_get_drvdata(dev);

	if (!mdata)
		return -ENODEV;

	dev_dbg(dev, "pm_runtime: idling...\n");

	return 0;
}

static int mdss_mdp_runtime_suspend(struct device *dev)
{
	struct mdss_data_type *mdata = dev_get_drvdata(dev);
	bool device_on = false;

	if (!mdata)
		return -ENODEV;
	dev_dbg(dev, "pm_runtime: suspending. active overlay cnt=%d\n",
		atomic_read(&mdata->active_intf_cnt));

	if (mdata->clk_ena) {
		pr_err("MDP suspend failed\n");
		return -EBUSY;
	}

	mdss_mdp_footswitch_ctrl(mdata, false);
	/* do not suspend panels when going in to idle power collapse */
	if (!mdata->idle_pc)
		device_for_each_child(dev, &device_on, mdss_fb_suspres_panel);

	return 0;
}
#endif

static const struct dev_pm_ops mdss_mdp_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(mdss_mdp_pm_suspend, mdss_mdp_pm_resume)
#ifdef CONFIG_PM
	SET_RUNTIME_PM_OPS(mdss_mdp_runtime_suspend,
			mdss_mdp_runtime_resume,
			mdss_mdp_runtime_idle)
#endif
};

static int mdss_mdp_remove(struct platform_device *pdev)
{
	struct mdss_data_type *mdata = platform_get_drvdata(pdev);

	if (!mdata)
		return -ENODEV;
	pm_runtime_disable(&pdev->dev);
	mdss_mdp_pp_term(&pdev->dev);
	mdss_mdp_bus_scale_unregister(mdata);
	mdss_debugfs_remove(mdata);
	if (mdata->regulator_notif_register)
		regulator_unregister_notifier(mdata->fs, &(mdata->gdsc_cb));
	return 0;
}

static const struct of_device_id mdss_mdp_dt_match[] = {
	{ .compatible = "qcom,mdss_mdp",},
	{}
};
MODULE_DEVICE_TABLE(of, mdss_mdp_dt_match);

static struct platform_driver mdss_mdp_driver = {
	.probe = mdss_mdp_probe,
	.remove = mdss_mdp_remove,
	.suspend = mdss_mdp_suspend,
	.resume = mdss_mdp_resume,
	.shutdown = NULL,
	.driver = {
		/*
		 * Driver name must match the device name added in
		 * platform.c.
		 */
		.name = "mdp",
		.of_match_table = mdss_mdp_dt_match,
		.pm = &mdss_mdp_pm_ops,
	},
};

static int mdss_mdp_register_driver(void)
{
	return platform_driver_register(&mdss_mdp_driver);
}

static int __init mdss_mdp_driver_init(void)
{
	int ret;

	ret = mdss_mdp_register_driver();
	if (ret) {
		pr_err("mdp_register_driver() failed!\n");
		return ret;
	}

	return 0;

}

module_param_string(panel, mdss_mdp_panel, MDSS_MAX_PANEL_LEN, 0600);
/*
 * panel=<lk_cfg>:<pan_intf>:<pan_intf_cfg>:<panel_topology_cfg>
 * where <lk_cfg> is "1"-lk/gcdb config or "0" non-lk/non-gcdb
 * config; <pan_intf> is dsi:<ctrl_id> or hdmi or edp
 * <pan_intf_cfg> is panel interface specific string
 * Ex: This string is panel's device node name from DT
 * for DSI interface
 * hdmi/edp interface does not use this string
 * <panel_topology_cfg> is an optional string. Currently it is
 * only valid for DSI panels. In dual-DSI case, it needs to be
 * used on both panels or none. When used, format is config%d
 * where %d is one of the configuration found in device node of
 * panel selected by <pan_intf_cfg>
 */
MODULE_PARM_DESC(panel, "lk supplied panel selection string");
MODULE_PARM_DESC(panel,
	"panel=<lk_cfg>:<pan_intf>:<pan_intf_cfg>:<panel_topology_cfg>");
module_init(mdss_mdp_driver_init);