// SPDX-License-Identifier: GPL-2.0
/*
 * camss-vfe-4-8.c
 *
 * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module v4.8
 *
 * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
 * Copyright (C) 2015-2021 Linaro Ltd.
 */

#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/iopoll.h>

#include "camss.h"
#include "camss-vfe.h"
#include "camss-vfe-gen1.h"

#define VFE_0_HW_VERSION                0x000

#define VFE_0_GLOBAL_RESET_CMD          0x018
#define VFE_0_GLOBAL_RESET_CMD_CORE     BIT(0)
#define VFE_0_GLOBAL_RESET_CMD_CAMIF    BIT(1)
#define VFE_0_GLOBAL_RESET_CMD_BUS      BIT(2)
#define VFE_0_GLOBAL_RESET_CMD_BUS_BDG  BIT(3)
#define VFE_0_GLOBAL_RESET_CMD_REGISTER BIT(4)
#define VFE_0_GLOBAL_RESET_CMD_PM       BIT(5)
#define VFE_0_GLOBAL_RESET_CMD_BUS_MISR BIT(6)
#define VFE_0_GLOBAL_RESET_CMD_TESTGEN  BIT(7)
#define VFE_0_GLOBAL_RESET_CMD_DSP      BIT(8)
#define VFE_0_GLOBAL_RESET_CMD_IDLE_CGC BIT(9)

#define VFE_0_MODULE_LENS_EN            0x040
#define VFE_0_MODULE_LENS_EN_DEMUX              BIT(2)
#define VFE_0_MODULE_LENS_EN_CHROMA_UPSAMPLE    BIT(3)

#define VFE_0_MODULE_ZOOM_EN            0x04c
#define VFE_0_MODULE_ZOOM_EN_SCALE_ENC          BIT(1)
#define VFE_0_MODULE_ZOOM_EN_CROP_ENC           BIT(2)
#define VFE_0_MODULE_ZOOM_EN_REALIGN_BUF        BIT(9)

#define VFE_0_CORE_CFG                  0x050
#define VFE_0_CORE_CFG_PIXEL_PATTERN_YCBYCR     0x4
#define VFE_0_CORE_CFG_PIXEL_PATTERN_YCRYCB     0x5
#define VFE_0_CORE_CFG_PIXEL_PATTERN_CBYCRY     0x6
#define VFE_0_CORE_CFG_PIXEL_PATTERN_CRYCBY     0x7
#define VFE_0_CORE_CFG_COMPOSITE_REG_UPDATE_EN  BIT(4)

#define VFE_0_IRQ_CMD                   0x058
#define VFE_0_IRQ_CMD_GLOBAL_CLEAR      BIT(0)

#define VFE_0_IRQ_MASK_0                0x05c
#define VFE_0_IRQ_MASK_0_CAMIF_SOF                      BIT(0)
#define VFE_0_IRQ_MASK_0_CAMIF_EOF                      BIT(1)
#define VFE_0_IRQ_MASK_0_RDIn_REG_UPDATE(n)             BIT((n) + 5)
#define VFE_0_IRQ_MASK_0_line_n_REG_UPDATE(n)           \
        ((n) == VFE_LINE_PIX ? BIT(4) : VFE_0_IRQ_MASK_0_RDIn_REG_UPDATE(n))
#define VFE_0_IRQ_MASK_0_IMAGE_MASTER_n_PING_PONG(n)    BIT((n) + 8)
#define VFE_0_IRQ_MASK_0_IMAGE_COMPOSITE_DONE_n(n)      BIT((n) + 25)
#define VFE_0_IRQ_MASK_0_RESET_ACK                      BIT(31)
#define VFE_0_IRQ_MASK_1                0x060
#define VFE_0_IRQ_MASK_1_CAMIF_ERROR                    BIT(0)
#define VFE_0_IRQ_MASK_1_VIOLATION                      BIT(7)
#define VFE_0_IRQ_MASK_1_BUS_BDG_HALT_ACK               BIT(8)
#define VFE_0_IRQ_MASK_1_IMAGE_MASTER_n_BUS_OVERFLOW(n) BIT((n) + 9)
#define VFE_0_IRQ_MASK_1_RDIn_SOF(n)                    BIT((n) + 29)

#define VFE_0_IRQ_CLEAR_0               0x064
#define VFE_0_IRQ_CLEAR_1               0x068

#define VFE_0_IRQ_STATUS_0              0x06c
#define VFE_0_IRQ_STATUS_0_CAMIF_SOF                    BIT(0)
#define VFE_0_IRQ_STATUS_0_RDIn_REG_UPDATE(n)           BIT((n) + 5)
#define VFE_0_IRQ_STATUS_0_line_n_REG_UPDATE(n)         \
        ((n) == VFE_LINE_PIX ? BIT(4) : VFE_0_IRQ_STATUS_0_RDIn_REG_UPDATE(n))
#define VFE_0_IRQ_STATUS_0_IMAGE_MASTER_n_PING_PONG(n)  BIT((n) + 8)
#define VFE_0_IRQ_STATUS_0_IMAGE_COMPOSITE_DONE_n(n)    BIT((n) + 25)
#define VFE_0_IRQ_STATUS_0_RESET_ACK                    BIT(31)
#define VFE_0_IRQ_STATUS_1              0x070
#define VFE_0_IRQ_STATUS_1_VIOLATION                    BIT(7)
#define VFE_0_IRQ_STATUS_1_BUS_BDG_HALT_ACK             BIT(8)
#define VFE_0_IRQ_STATUS_1_RDIn_SOF(n)                  BIT((n) + 29)

#define VFE_0_IRQ_COMPOSITE_MASK_0      0x074
#define VFE_0_VIOLATION_STATUS          0x07c

#define VFE_0_BUS_CMD                   0x80
#define VFE_0_BUS_CMD_Mx_RLD_CMD(x)     BIT(x)

#define VFE_0_BUS_CFG                   0x084

#define VFE_0_BUS_XBAR_CFG_x(x)         (0x90 + 0x4 * ((x) / 2))
#define VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_EN                   BIT(2)
#define VFE_0_BUS_XBAR_CFG_x_M_REALIGN_BUF_EN                   BIT(3)
#define VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_SWAP_INTRA           (0x1 << 4)
#define VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_SWAP_INTER           (0x2 << 4)
#define VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_SWAP_INTER_INTRA     (0x3 << 4)
#define VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_SHIFT          8
#define VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_LUMA           0x0
#define VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_VAL_RDI0       0xc
#define VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_VAL_RDI1       0xd
#define VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_VAL_RDI2       0xe

#define VFE_0_BUS_IMAGE_MASTER_n_WR_CFG(n)              (0x0a0 + 0x2c * (n))
#define VFE_0_BUS_IMAGE_MASTER_n_WR_CFG_WR_PATH_SHIFT   0
#define VFE_0_BUS_IMAGE_MASTER_n_WR_PING_ADDR(n)        (0x0a4 + 0x2c * (n))
#define VFE_0_BUS_IMAGE_MASTER_n_WR_PONG_ADDR(n)        (0x0ac + 0x2c * (n))
#define VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG(n)         (0x0b4 + 0x2c * (n))
#define VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG_FRM_BASED_SHIFT    1
#define VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG_FRM_DROP_PER_SHIFT 2
#define VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG_FRM_DROP_PER_MASK  (0x1f << 2)
#define VFE_0_BUS_IMAGE_MASTER_n_WR_UB_CFG(n)           (0x0b8 + 0x2c * (n))
#define VFE_0_BUS_IMAGE_MASTER_n_WR_UB_CFG_OFFSET_SHIFT 16
#define VFE_0_BUS_IMAGE_MASTER_n_WR_IMAGE_SIZE(n)       (0x0bc + 0x2c * (n))
#define VFE_0_BUS_IMAGE_MASTER_n_WR_BUFFER_CFG(n)       (0x0c0 + 0x2c * (n))
#define VFE_0_BUS_IMAGE_MASTER_n_WR_FRAMEDROP_PATTERN(n)        \
                                                        (0x0c4 + 0x2c * (n))
#define VFE_0_BUS_IMAGE_MASTER_n_WR_IRQ_SUBSAMPLE_PATTERN(n)    \
                                                        (0x0c8 + 0x2c * (n))
#define VFE_0_BUS_IMAGE_MASTER_n_WR_IRQ_SUBSAMPLE_PATTERN_DEF   0xffffffff

#define VFE_0_BUS_PING_PONG_STATUS      0x338

#define VFE_0_BUS_BDG_CMD               0x400
#define VFE_0_BUS_BDG_CMD_HALT_REQ      1

#define VFE_0_BUS_BDG_QOS_CFG_0         0x404
#define VFE_0_BUS_BDG_QOS_CFG_0_CFG     0xaaa5aaa5
#define VFE_0_BUS_BDG_QOS_CFG_1         0x408
#define VFE_0_BUS_BDG_QOS_CFG_2         0x40c
#define VFE_0_BUS_BDG_QOS_CFG_3         0x410
#define VFE_0_BUS_BDG_QOS_CFG_3_CFG     0xaa55aaa5
#define VFE_0_BUS_BDG_QOS_CFG_4         0x414
#define VFE_0_BUS_BDG_QOS_CFG_4_CFG     0xaa55aa55
#define VFE_0_BUS_BDG_QOS_CFG_5         0x418
#define VFE_0_BUS_BDG_QOS_CFG_6         0x41c
#define VFE_0_BUS_BDG_QOS_CFG_7         0x420
#define VFE_0_BUS_BDG_QOS_CFG_7_CFG     0x0005aa55

#define VFE_0_BUS_BDG_DS_CFG_0          0x424
#define VFE_0_BUS_BDG_DS_CFG_0_CFG      0xcccc1111
#define VFE_0_BUS_BDG_DS_CFG_1          0x428
#define VFE_0_BUS_BDG_DS_CFG_2          0x42c
#define VFE_0_BUS_BDG_DS_CFG_3          0x430
#define VFE_0_BUS_BDG_DS_CFG_4          0x434
#define VFE_0_BUS_BDG_DS_CFG_5          0x438
#define VFE_0_BUS_BDG_DS_CFG_6          0x43c
#define VFE_0_BUS_BDG_DS_CFG_7          0x440
#define VFE_0_BUS_BDG_DS_CFG_8          0x444
#define VFE_0_BUS_BDG_DS_CFG_9          0x448
#define VFE_0_BUS_BDG_DS_CFG_10         0x44c
#define VFE_0_BUS_BDG_DS_CFG_11         0x450
#define VFE_0_BUS_BDG_DS_CFG_12         0x454
#define VFE_0_BUS_BDG_DS_CFG_13         0x458
#define VFE_0_BUS_BDG_DS_CFG_14         0x45c
#define VFE_0_BUS_BDG_DS_CFG_15         0x460
#define VFE_0_BUS_BDG_DS_CFG_16         0x464
#define VFE_0_BUS_BDG_DS_CFG_16_CFG     0x00000110

#define VFE_0_RDI_CFG_x(x)              (0x46c + (0x4 * (x)))
#define VFE_0_RDI_CFG_x_RDI_STREAM_SEL_SHIFT    28
#define VFE_0_RDI_CFG_x_RDI_STREAM_SEL_MASK     (0xf << 28)
#define VFE_0_RDI_CFG_x_RDI_M0_SEL_SHIFT        4
#define VFE_0_RDI_CFG_x_RDI_M0_SEL_MASK         (0xf << 4)
#define VFE_0_RDI_CFG_x_RDI_EN_BIT              BIT(2)
#define VFE_0_RDI_CFG_x_MIPI_EN_BITS            0x3

#define VFE_0_CAMIF_CMD                         0x478
#define VFE_0_CAMIF_CMD_DISABLE_FRAME_BOUNDARY  0
#define VFE_0_CAMIF_CMD_ENABLE_FRAME_BOUNDARY   1
#define VFE_0_CAMIF_CMD_NO_CHANGE               3
#define VFE_0_CAMIF_CMD_CLEAR_CAMIF_STATUS      BIT(2)
#define VFE_0_CAMIF_CFG                         0x47c
#define VFE_0_CAMIF_CFG_VFE_OUTPUT_EN           BIT(6)
#define VFE_0_CAMIF_FRAME_CFG                   0x484
#define VFE_0_CAMIF_WINDOW_WIDTH_CFG            0x488
#define VFE_0_CAMIF_WINDOW_HEIGHT_CFG           0x48c
#define VFE_0_CAMIF_SUBSAMPLE_CFG               0x490
#define VFE_0_CAMIF_IRQ_FRAMEDROP_PATTERN       0x498
#define VFE_0_CAMIF_IRQ_SUBSAMPLE_PATTERN       0x49c
#define VFE_0_CAMIF_STATUS                      0x4a4
#define VFE_0_CAMIF_STATUS_HALT                 BIT(31)

#define VFE_0_REG_UPDATE                0x4ac
#define VFE_0_REG_UPDATE_RDIn(n)                BIT(1 + (n))
#define VFE_0_REG_UPDATE_line_n(n)              \
                        ((n) == VFE_LINE_PIX ? 1 : VFE_0_REG_UPDATE_RDIn(n))

#define VFE_0_DEMUX_CFG                         0x560
#define VFE_0_DEMUX_CFG_PERIOD                  0x3
#define VFE_0_DEMUX_GAIN_0                      0x564
#define VFE_0_DEMUX_GAIN_0_CH0_EVEN             (0x80 << 0)
#define VFE_0_DEMUX_GAIN_0_CH0_ODD              (0x80 << 16)
#define VFE_0_DEMUX_GAIN_1                      0x568
#define VFE_0_DEMUX_GAIN_1_CH1                  (0x80 << 0)
#define VFE_0_DEMUX_GAIN_1_CH2                  (0x80 << 16)
#define VFE_0_DEMUX_EVEN_CFG                    0x574
#define VFE_0_DEMUX_EVEN_CFG_PATTERN_YUYV       0x9cac
#define VFE_0_DEMUX_EVEN_CFG_PATTERN_YVYU       0xac9c
#define VFE_0_DEMUX_EVEN_CFG_PATTERN_UYVY       0xc9ca
#define VFE_0_DEMUX_EVEN_CFG_PATTERN_VYUY       0xcac9
#define VFE_0_DEMUX_ODD_CFG                     0x578
#define VFE_0_DEMUX_ODD_CFG_PATTERN_YUYV        0x9cac
#define VFE_0_DEMUX_ODD_CFG_PATTERN_YVYU        0xac9c
#define VFE_0_DEMUX_ODD_CFG_PATTERN_UYVY        0xc9ca
#define VFE_0_DEMUX_ODD_CFG_PATTERN_VYUY        0xcac9

#define VFE_0_SCALE_ENC_Y_CFG                   0x91c
#define VFE_0_SCALE_ENC_Y_H_IMAGE_SIZE          0x920
#define VFE_0_SCALE_ENC_Y_H_PHASE               0x924
#define VFE_0_SCALE_ENC_Y_V_IMAGE_SIZE          0x934
#define VFE_0_SCALE_ENC_Y_V_PHASE               0x938
#define VFE_0_SCALE_ENC_CBCR_CFG                0x948
#define VFE_0_SCALE_ENC_CBCR_H_IMAGE_SIZE       0x94c
#define VFE_0_SCALE_ENC_CBCR_H_PHASE            0x950
#define VFE_0_SCALE_ENC_CBCR_V_IMAGE_SIZE       0x960
#define VFE_0_SCALE_ENC_CBCR_V_PHASE            0x964

#define VFE_0_CROP_ENC_Y_WIDTH                  0x974
#define VFE_0_CROP_ENC_Y_HEIGHT                 0x978
#define VFE_0_CROP_ENC_CBCR_WIDTH               0x97c
#define VFE_0_CROP_ENC_CBCR_HEIGHT              0x980

#define VFE_0_CLAMP_ENC_MAX_CFG                 0x984
#define VFE_0_CLAMP_ENC_MAX_CFG_CH0             (0xff << 0)
#define VFE_0_CLAMP_ENC_MAX_CFG_CH1             (0xff << 8)
#define VFE_0_CLAMP_ENC_MAX_CFG_CH2             (0xff << 16)
#define VFE_0_CLAMP_ENC_MIN_CFG                 0x988
#define VFE_0_CLAMP_ENC_MIN_CFG_CH0             (0x0 << 0)
#define VFE_0_CLAMP_ENC_MIN_CFG_CH1             (0x0 << 8)
#define VFE_0_CLAMP_ENC_MIN_CFG_CH2             (0x0 << 16)

#define VFE_0_REALIGN_BUF_CFG                   0xaac
#define VFE_0_REALIGN_BUF_CFG_CB_ODD_PIXEL     BIT(2)
#define VFE_0_REALIGN_BUF_CFG_CR_ODD_PIXEL     BIT(3)
#define VFE_0_REALIGN_BUF_CFG_HSUB_ENABLE      BIT(4)

#define VFE_0_BUS_IMAGE_MASTER_CMD              0xcec
#define VFE_0_BUS_IMAGE_MASTER_n_SHIFT(x)       (2 * (x))

#define CAMIF_TIMEOUT_SLEEP_US 1000
#define CAMIF_TIMEOUT_ALL_US 1000000

#define MSM_VFE_VFE0_UB_SIZE 2047
#define MSM_VFE_VFE0_UB_SIZE_RDI (MSM_VFE_VFE0_UB_SIZE / 3)
#define MSM_VFE_VFE1_UB_SIZE 1535
#define MSM_VFE_VFE1_UB_SIZE_RDI (MSM_VFE_VFE1_UB_SIZE / 3)

static u32 vfe_hw_version(struct vfe_device *vfe)
{
        u32 hw_version = readl_relaxed(vfe->base + VFE_0_HW_VERSION);

        dev_dbg(vfe->camss->dev, "VFE HW Version = 0x%08x\n", hw_version);

        return hw_version;
}

static inline void vfe_reg_clr(struct vfe_device *vfe, u32 reg, u32 clr_bits)
{
        u32 bits = readl_relaxed(vfe->base + reg);

        writel_relaxed(bits & ~clr_bits, vfe->base + reg);
}

static inline void vfe_reg_set(struct vfe_device *vfe, u32 reg, u32 set_bits)
{
        u32 bits = readl_relaxed(vfe->base + reg);

        writel_relaxed(bits | set_bits, vfe->base + reg);
}

static void vfe_global_reset(struct vfe_device *vfe)
{
        u32 reset_bits = VFE_0_GLOBAL_RESET_CMD_IDLE_CGC        |
                         VFE_0_GLOBAL_RESET_CMD_DSP             |
                         VFE_0_GLOBAL_RESET_CMD_TESTGEN         |
                         VFE_0_GLOBAL_RESET_CMD_BUS_MISR        |
                         VFE_0_GLOBAL_RESET_CMD_PM              |
                         VFE_0_GLOBAL_RESET_CMD_REGISTER        |
                         VFE_0_GLOBAL_RESET_CMD_BUS_BDG         |
                         VFE_0_GLOBAL_RESET_CMD_BUS             |
                         VFE_0_GLOBAL_RESET_CMD_CAMIF           |
                         VFE_0_GLOBAL_RESET_CMD_CORE;

        writel_relaxed(BIT(31), vfe->base + VFE_0_IRQ_MASK_0);

        /* Enforce barrier between IRQ mask setup and global reset */
        wmb();
        writel_relaxed(reset_bits, vfe->base + VFE_0_GLOBAL_RESET_CMD);
}

static void vfe_halt_request(struct vfe_device *vfe)
{
        writel_relaxed(VFE_0_BUS_BDG_CMD_HALT_REQ,
                       vfe->base + VFE_0_BUS_BDG_CMD);
}

static void vfe_halt_clear(struct vfe_device *vfe)
{
        writel_relaxed(0x0, vfe->base + VFE_0_BUS_BDG_CMD);
}

static void vfe_wm_frame_based(struct vfe_device *vfe, u8 wm, u8 enable)
{
        if (enable)
                vfe_reg_set(vfe, VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG(wm),
                            1 << VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG_FRM_BASED_SHIFT);
        else
                vfe_reg_clr(vfe, VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG(wm),
                            1 << VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG_FRM_BASED_SHIFT);
}

#define CALC_WORD(width, M, N) (((width) * (M) + (N) - 1) / (N))

static int vfe_word_per_line_by_pixel(u32 format, u32 pixel_per_line)
{
        int val = 0;

        switch (format) {
        case V4L2_PIX_FMT_NV12:
        case V4L2_PIX_FMT_NV21:
        case V4L2_PIX_FMT_NV16:
        case V4L2_PIX_FMT_NV61:
                val = CALC_WORD(pixel_per_line, 1, 8);
                break;
        case V4L2_PIX_FMT_YUYV:
        case V4L2_PIX_FMT_YVYU:
        case V4L2_PIX_FMT_UYVY:
        case V4L2_PIX_FMT_VYUY:
                val = CALC_WORD(pixel_per_line, 2, 8);
                break;
        }

        return val;
}

static int vfe_word_per_line_by_bytes(u32 bytes_per_line)
{
        return CALC_WORD(bytes_per_line, 1, 8);
}

static void vfe_get_wm_sizes(struct v4l2_pix_format_mplane *pix, u8 plane,
                             u16 *width, u16 *height, u16 *bytesperline)
{
        *width = pix->width;
        *height = pix->height;

        switch (pix->pixelformat) {
        case V4L2_PIX_FMT_NV12:
        case V4L2_PIX_FMT_NV21:
                *bytesperline = pix->plane_fmt[0].bytesperline;
                if (plane == 1)
                        *height /= 2;
                break;
        case V4L2_PIX_FMT_NV16:
        case V4L2_PIX_FMT_NV61:
                *bytesperline = pix->plane_fmt[0].bytesperline;
                break;
        case V4L2_PIX_FMT_YUYV:
        case V4L2_PIX_FMT_YVYU:
        case V4L2_PIX_FMT_VYUY:
        case V4L2_PIX_FMT_UYVY:
                *bytesperline = pix->plane_fmt[plane].bytesperline;
                break;
        }
}

static void vfe_wm_line_based(struct vfe_device *vfe, u32 wm,
                              struct v4l2_pix_format_mplane *pix,
                              u8 plane, u32 enable)
{
        u32 reg;

        if (enable) {
                u16 width = 0, height = 0, bytesperline = 0, wpl;

                vfe_get_wm_sizes(pix, plane, &width, &height, &bytesperline);

                wpl = vfe_word_per_line_by_pixel(pix->pixelformat, width);

                reg = height - 1;
                reg |= ((wpl + 3) / 4 - 1) << 16;

                writel_relaxed(reg, vfe->base +
                               VFE_0_BUS_IMAGE_MASTER_n_WR_IMAGE_SIZE(wm));

                wpl = vfe_word_per_line_by_bytes(bytesperline);

                reg = 0x3;
                reg |= (height - 1) << 2;
                reg |= ((wpl + 1) / 2) << 16;

                writel_relaxed(reg, vfe->base +
                               VFE_0_BUS_IMAGE_MASTER_n_WR_BUFFER_CFG(wm));
        } else {
                writel_relaxed(0, vfe->base +
                               VFE_0_BUS_IMAGE_MASTER_n_WR_IMAGE_SIZE(wm));
                writel_relaxed(0, vfe->base +
                               VFE_0_BUS_IMAGE_MASTER_n_WR_BUFFER_CFG(wm));
        }
}

static void vfe_wm_set_framedrop_period(struct vfe_device *vfe, u8 wm, u8 per)
{
        u32 reg;

        reg = readl_relaxed(vfe->base +
                            VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG(wm));

        reg &= ~(VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG_FRM_DROP_PER_MASK);

        reg |= (per << VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG_FRM_DROP_PER_SHIFT)
                & VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG_FRM_DROP_PER_MASK;

        writel_relaxed(reg,
                       vfe->base + VFE_0_BUS_IMAGE_MASTER_n_WR_ADDR_CFG(wm));
}

static void vfe_wm_set_framedrop_pattern(struct vfe_device *vfe, u8 wm,
                                         u32 pattern)
{
        writel_relaxed(pattern, vfe->base + VFE_0_BUS_IMAGE_MASTER_n_WR_FRAMEDROP_PATTERN(wm));
}

static void vfe_wm_set_ub_cfg(struct vfe_device *vfe, u8 wm,
                              u16 offset, u16 depth)
{
        u32 reg;

        reg = (offset << VFE_0_BUS_IMAGE_MASTER_n_WR_UB_CFG_OFFSET_SHIFT) |
              depth;
        writel_relaxed(reg, vfe->base + VFE_0_BUS_IMAGE_MASTER_n_WR_UB_CFG(wm));
}

static void vfe_bus_reload_wm(struct vfe_device *vfe, u8 wm)
{
        /* Enforce barrier between any outstanding register write */
        wmb();

        writel_relaxed(VFE_0_BUS_CMD_Mx_RLD_CMD(wm), vfe->base + VFE_0_BUS_CMD);

        /* Use barrier to make sure bus reload is issued before anything else */
        wmb();
}

static void vfe_wm_set_ping_addr(struct vfe_device *vfe, u8 wm, u32 addr)
{
        writel_relaxed(addr,
                       vfe->base + VFE_0_BUS_IMAGE_MASTER_n_WR_PING_ADDR(wm));
}

static void vfe_wm_set_pong_addr(struct vfe_device *vfe, u8 wm, u32 addr)
{
        writel_relaxed(addr,
                       vfe->base + VFE_0_BUS_IMAGE_MASTER_n_WR_PONG_ADDR(wm));
}

static int vfe_wm_get_ping_pong_status(struct vfe_device *vfe, u8 wm)
{
        u32 reg;

        reg = readl_relaxed(vfe->base + VFE_0_BUS_PING_PONG_STATUS);

        return (reg >> wm) & 0x1;
}

static void vfe_bus_enable_wr_if(struct vfe_device *vfe, u8 enable)
{
        if (enable)
                writel_relaxed(0x101, vfe->base + VFE_0_BUS_CFG);
        else
                writel_relaxed(0, vfe->base + VFE_0_BUS_CFG);
}

static void vfe_bus_connect_wm_to_rdi(struct vfe_device *vfe, u8 wm,
                                      enum vfe_line_id id)
{
        u32 reg;

        reg = VFE_0_RDI_CFG_x_MIPI_EN_BITS;
        vfe_reg_set(vfe, VFE_0_RDI_CFG_x(0), reg);

        reg = VFE_0_RDI_CFG_x_RDI_EN_BIT;
        reg |= ((3 * id) << VFE_0_RDI_CFG_x_RDI_STREAM_SEL_SHIFT) &
                VFE_0_RDI_CFG_x_RDI_STREAM_SEL_MASK;
        vfe_reg_set(vfe, VFE_0_RDI_CFG_x(id), reg);

        switch (id) {
        case VFE_LINE_RDI0:
        default:
                reg = VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_VAL_RDI0 <<
                      VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_SHIFT;
                break;
        case VFE_LINE_RDI1:
                reg = VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_VAL_RDI1 <<
                      VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_SHIFT;
                break;
        case VFE_LINE_RDI2:
                reg = VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_VAL_RDI2 <<
                      VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_SHIFT;
                break;
        }

        if (wm % 2 == 1)
                reg <<= 16;

        vfe_reg_set(vfe, VFE_0_BUS_XBAR_CFG_x(wm), reg);
}

static void vfe_wm_set_subsample(struct vfe_device *vfe, u8 wm)
{
        writel_relaxed(VFE_0_BUS_IMAGE_MASTER_n_WR_IRQ_SUBSAMPLE_PATTERN_DEF,
                       vfe->base + VFE_0_BUS_IMAGE_MASTER_n_WR_IRQ_SUBSAMPLE_PATTERN(wm));
}

static void vfe_bus_disconnect_wm_from_rdi(struct vfe_device *vfe, u8 wm,
                                           enum vfe_line_id id)
{
        u32 reg;

        reg = VFE_0_RDI_CFG_x_RDI_EN_BIT;
        vfe_reg_clr(vfe, VFE_0_RDI_CFG_x(id), reg);

        switch (id) {
        case VFE_LINE_RDI0:
        default:
                reg = VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_VAL_RDI0 <<
                      VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_SHIFT;
                break;
        case VFE_LINE_RDI1:
                reg = VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_VAL_RDI1 <<
                      VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_SHIFT;
                break;
        case VFE_LINE_RDI2:
                reg = VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_VAL_RDI2 <<
                      VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_SHIFT;
                break;
        }

        if (wm % 2 == 1)
                reg <<= 16;

        vfe_reg_clr(vfe, VFE_0_BUS_XBAR_CFG_x(wm), reg);
}

static void vfe_set_xbar_cfg(struct vfe_device *vfe, struct vfe_output *output,
                             u8 enable)
{
        struct vfe_line *line = container_of(output, struct vfe_line, output);
        u32 p = line->video_out.active_fmt.fmt.pix_mp.pixelformat;
        u32 reg;

        switch (p) {
        case V4L2_PIX_FMT_NV12:
        case V4L2_PIX_FMT_NV21:
        case V4L2_PIX_FMT_NV16:
        case V4L2_PIX_FMT_NV61:
                reg = VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_LUMA <<
                        VFE_0_BUS_XBAR_CFG_x_M_SINGLE_STREAM_SEL_SHIFT;

                if (output->wm_idx[0] % 2 == 1)
                        reg <<= 16;

                if (enable)
                        vfe_reg_set(vfe,
                                    VFE_0_BUS_XBAR_CFG_x(output->wm_idx[0]),
                                    reg);
                else
                        vfe_reg_clr(vfe,
                                    VFE_0_BUS_XBAR_CFG_x(output->wm_idx[0]),
                                    reg);

                reg = VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_EN;
                if (p == V4L2_PIX_FMT_NV12 || p == V4L2_PIX_FMT_NV16)
                        reg |= VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_SWAP_INTER_INTRA;

                if (output->wm_idx[1] % 2 == 1)
                        reg <<= 16;

                if (enable)
                        vfe_reg_set(vfe,
                                    VFE_0_BUS_XBAR_CFG_x(output->wm_idx[1]),
                                    reg);
                else
                        vfe_reg_clr(vfe,
                                    VFE_0_BUS_XBAR_CFG_x(output->wm_idx[1]),
                                    reg);
                break;
        case V4L2_PIX_FMT_YUYV:
        case V4L2_PIX_FMT_YVYU:
        case V4L2_PIX_FMT_VYUY:
        case V4L2_PIX_FMT_UYVY:
                reg = VFE_0_BUS_XBAR_CFG_x_M_REALIGN_BUF_EN;
                reg |= VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_EN;

                if (p == V4L2_PIX_FMT_YUYV || p == V4L2_PIX_FMT_YVYU)
                        reg |= VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_SWAP_INTER_INTRA;

                if (output->wm_idx[0] % 2 == 1)
                        reg <<= 16;

                if (enable)
                        vfe_reg_set(vfe,
                                    VFE_0_BUS_XBAR_CFG_x(output->wm_idx[0]),
                                    reg);
                else
                        vfe_reg_clr(vfe,
                                    VFE_0_BUS_XBAR_CFG_x(output->wm_idx[0]),
                                    reg);
                break;
        default:
                break;
        }
}

static void vfe_set_realign_cfg(struct vfe_device *vfe, struct vfe_line *line,
                                u8 enable)
{
        u32 p = line->video_out.active_fmt.fmt.pix_mp.pixelformat;
        u32 val = VFE_0_MODULE_ZOOM_EN_REALIGN_BUF;

        if (p != V4L2_PIX_FMT_YUYV && p != V4L2_PIX_FMT_YVYU &&
            p != V4L2_PIX_FMT_VYUY && p != V4L2_PIX_FMT_UYVY)
                return;

        if (enable) {
                vfe_reg_set(vfe, VFE_0_MODULE_ZOOM_EN, val);
        } else {
                vfe_reg_clr(vfe, VFE_0_MODULE_ZOOM_EN, val);
                return;
        }

        val = VFE_0_REALIGN_BUF_CFG_HSUB_ENABLE;

        if (p == V4L2_PIX_FMT_UYVY || p == V4L2_PIX_FMT_YUYV)
                val |= VFE_0_REALIGN_BUF_CFG_CR_ODD_PIXEL;
        else
                val |= VFE_0_REALIGN_BUF_CFG_CB_ODD_PIXEL;

        writel_relaxed(val, vfe->base + VFE_0_REALIGN_BUF_CFG);
}

static void vfe_set_rdi_cid(struct vfe_device *vfe, enum vfe_line_id id, u8 cid)
{
        vfe_reg_clr(vfe, VFE_0_RDI_CFG_x(id),
                    VFE_0_RDI_CFG_x_RDI_M0_SEL_MASK);

        vfe_reg_set(vfe, VFE_0_RDI_CFG_x(id),
                    cid << VFE_0_RDI_CFG_x_RDI_M0_SEL_SHIFT);
}

static void vfe_reg_update(struct vfe_device *vfe, enum vfe_line_id line_id)
{
        vfe->reg_update |= VFE_0_REG_UPDATE_line_n(line_id);

        /* Enforce barrier between line update and commit */
        wmb();

        writel_relaxed(vfe->reg_update, vfe->base + VFE_0_REG_UPDATE);

        /* Make sure register update is issued before further reg writes */
        wmb();
}

static inline void vfe_reg_update_clear(struct vfe_device *vfe,
                                        enum vfe_line_id line_id)
{
        vfe->reg_update &= ~VFE_0_REG_UPDATE_line_n(line_id);
}

static void vfe_enable_irq_wm_line(struct vfe_device *vfe, u8 wm,
                                   enum vfe_line_id line_id, u8 enable)
{
        u32 irq_en0 = VFE_0_IRQ_MASK_0_IMAGE_MASTER_n_PING_PONG(wm) |
                      VFE_0_IRQ_MASK_0_line_n_REG_UPDATE(line_id);
        u32 irq_en1 = VFE_0_IRQ_MASK_1_IMAGE_MASTER_n_BUS_OVERFLOW(wm) |
                      VFE_0_IRQ_MASK_1_RDIn_SOF(line_id);

        if (enable) {
                vfe_reg_set(vfe, VFE_0_IRQ_MASK_0, irq_en0);
                vfe_reg_set(vfe, VFE_0_IRQ_MASK_1, irq_en1);
        } else {
                vfe_reg_clr(vfe, VFE_0_IRQ_MASK_0, irq_en0);
                vfe_reg_clr(vfe, VFE_0_IRQ_MASK_1, irq_en1);
        }
}

static void vfe_enable_irq_pix_line(struct vfe_device *vfe, u8 comp,
                                    enum vfe_line_id line_id, u8 enable)
{
        struct vfe_output *output = &vfe->line[line_id].output;
        unsigned int i;
        u32 irq_en0;
        u32 irq_en1;
        u32 comp_mask = 0;

        irq_en0 = VFE_0_IRQ_MASK_0_CAMIF_SOF;
        irq_en0 |= VFE_0_IRQ_MASK_0_CAMIF_EOF;
        irq_en0 |= VFE_0_IRQ_MASK_0_IMAGE_COMPOSITE_DONE_n(comp);
        irq_en0 |= VFE_0_IRQ_MASK_0_line_n_REG_UPDATE(line_id);
        irq_en1 = VFE_0_IRQ_MASK_1_CAMIF_ERROR;
        for (i = 0; i < output->wm_num; i++) {
                irq_en1 |= VFE_0_IRQ_MASK_1_IMAGE_MASTER_n_BUS_OVERFLOW(output->wm_idx[i]);
                comp_mask |= (1 << output->wm_idx[i]) << comp * 8;
        }

        if (enable) {
                vfe_reg_set(vfe, VFE_0_IRQ_MASK_0, irq_en0);
                vfe_reg_set(vfe, VFE_0_IRQ_MASK_1, irq_en1);
                vfe_reg_set(vfe, VFE_0_IRQ_COMPOSITE_MASK_0, comp_mask);
        } else {
                vfe_reg_clr(vfe, VFE_0_IRQ_MASK_0, irq_en0);
                vfe_reg_clr(vfe, VFE_0_IRQ_MASK_1, irq_en1);
                vfe_reg_clr(vfe, VFE_0_IRQ_COMPOSITE_MASK_0, comp_mask);
        }
}

static void vfe_enable_irq_common(struct vfe_device *vfe)
{
        u32 irq_en0 = VFE_0_IRQ_MASK_0_RESET_ACK;
        u32 irq_en1 = VFE_0_IRQ_MASK_1_VIOLATION |
                      VFE_0_IRQ_MASK_1_BUS_BDG_HALT_ACK;

        vfe_reg_set(vfe, VFE_0_IRQ_MASK_0, irq_en0);
        vfe_reg_set(vfe, VFE_0_IRQ_MASK_1, irq_en1);
}

static void vfe_set_demux_cfg(struct vfe_device *vfe, struct vfe_line *line)
{
        u32 val, even_cfg, odd_cfg;

        writel_relaxed(VFE_0_DEMUX_CFG_PERIOD, vfe->base + VFE_0_DEMUX_CFG);

        val = VFE_0_DEMUX_GAIN_0_CH0_EVEN | VFE_0_DEMUX_GAIN_0_CH0_ODD;
        writel_relaxed(val, vfe->base + VFE_0_DEMUX_GAIN_0);

        val = VFE_0_DEMUX_GAIN_1_CH1 | VFE_0_DEMUX_GAIN_1_CH2;
        writel_relaxed(val, vfe->base + VFE_0_DEMUX_GAIN_1);

        switch (line->fmt[MSM_VFE_PAD_SINK].code) {
        case MEDIA_BUS_FMT_YUYV8_2X8:
                even_cfg = VFE_0_DEMUX_EVEN_CFG_PATTERN_YUYV;
                odd_cfg = VFE_0_DEMUX_ODD_CFG_PATTERN_YUYV;
                break;
        case MEDIA_BUS_FMT_YVYU8_2X8:
                even_cfg = VFE_0_DEMUX_EVEN_CFG_PATTERN_YVYU;
                odd_cfg = VFE_0_DEMUX_ODD_CFG_PATTERN_YVYU;
                break;
        case MEDIA_BUS_FMT_UYVY8_2X8:
        default:
                even_cfg = VFE_0_DEMUX_EVEN_CFG_PATTERN_UYVY;
                odd_cfg = VFE_0_DEMUX_ODD_CFG_PATTERN_UYVY;
                break;
        case MEDIA_BUS_FMT_VYUY8_2X8:
                even_cfg = VFE_0_DEMUX_EVEN_CFG_PATTERN_VYUY;
                odd_cfg = VFE_0_DEMUX_ODD_CFG_PATTERN_VYUY;
                break;
        }

        writel_relaxed(even_cfg, vfe->base + VFE_0_DEMUX_EVEN_CFG);
        writel_relaxed(odd_cfg, vfe->base + VFE_0_DEMUX_ODD_CFG);
}

static void vfe_set_scale_cfg(struct vfe_device *vfe, struct vfe_line *line)
{
        u32 p = line->video_out.active_fmt.fmt.pix_mp.pixelformat;
        u32 reg;
        u16 input, output;
        u8 interp_reso;
        u32 phase_mult;

        writel_relaxed(0x3, vfe->base + VFE_0_SCALE_ENC_Y_CFG);

        input = line->fmt[MSM_VFE_PAD_SINK].width - 1;
        output = line->compose.width - 1;
        reg = (output << 16) | input;
        writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_Y_H_IMAGE_SIZE);

        interp_reso = vfe_calc_interp_reso(input, output);
        phase_mult = input * (1 << (14 + interp_reso)) / output;
        reg = (interp_reso << 28) | phase_mult;
        writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_Y_H_PHASE);

        input = line->fmt[MSM_VFE_PAD_SINK].height - 1;
        output = line->compose.height - 1;
        reg = (output << 16) | input;
        writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_Y_V_IMAGE_SIZE);

        interp_reso = vfe_calc_interp_reso(input, output);
        phase_mult = input * (1 << (14 + interp_reso)) / output;
        reg = (interp_reso << 28) | phase_mult;
        writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_Y_V_PHASE);

        writel_relaxed(0x3, vfe->base + VFE_0_SCALE_ENC_CBCR_CFG);

        input = line->fmt[MSM_VFE_PAD_SINK].width - 1;
        output = line->compose.width / 2 - 1;
        reg = (output << 16) | input;
        writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_CBCR_H_IMAGE_SIZE);

        interp_reso = vfe_calc_interp_reso(input, output);
        phase_mult = input * (1 << (14 + interp_reso)) / output;
        reg = (interp_reso << 28) | phase_mult;
        writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_CBCR_H_PHASE);

        input = line->fmt[MSM_VFE_PAD_SINK].height - 1;
        output = line->compose.height - 1;
        if (p == V4L2_PIX_FMT_NV12 || p == V4L2_PIX_FMT_NV21)
                output = line->compose.height / 2 - 1;
        reg = (output << 16) | input;
        writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_CBCR_V_IMAGE_SIZE);

        interp_reso = vfe_calc_interp_reso(input, output);
        phase_mult = input * (1 << (14 + interp_reso)) / output;
        reg = (interp_reso << 28) | phase_mult;
        writel_relaxed(reg, vfe->base + VFE_0_SCALE_ENC_CBCR_V_PHASE);
}

static void vfe_set_crop_cfg(struct vfe_device *vfe, struct vfe_line *line)
{
        u32 p = line->video_out.active_fmt.fmt.pix_mp.pixelformat;
        u32 reg;
        u16 first, last;

        first = line->crop.left;
        last = line->crop.left + line->crop.width - 1;
        reg = (first << 16) | last;
        writel_relaxed(reg, vfe->base + VFE_0_CROP_ENC_Y_WIDTH);

        first = line->crop.top;
        last = line->crop.top + line->crop.height - 1;
        reg = (first << 16) | last;
        writel_relaxed(reg, vfe->base + VFE_0_CROP_ENC_Y_HEIGHT);

        first = line->crop.left / 2;
        last = line->crop.left / 2 + line->crop.width / 2 - 1;
        reg = (first << 16) | last;
        writel_relaxed(reg, vfe->base + VFE_0_CROP_ENC_CBCR_WIDTH);

        first = line->crop.top;
        last = line->crop.top + line->crop.height - 1;
        if (p == V4L2_PIX_FMT_NV12 || p == V4L2_PIX_FMT_NV21) {
                first = line->crop.top / 2;
                last = line->crop.top / 2 + line->crop.height / 2 - 1;
        }
        reg = (first << 16) | last;
        writel_relaxed(reg, vfe->base + VFE_0_CROP_ENC_CBCR_HEIGHT);
}

static void vfe_set_clamp_cfg(struct vfe_device *vfe)
{
        u32 val = VFE_0_CLAMP_ENC_MAX_CFG_CH0 |
                VFE_0_CLAMP_ENC_MAX_CFG_CH1 |
                VFE_0_CLAMP_ENC_MAX_CFG_CH2;

        writel_relaxed(val, vfe->base + VFE_0_CLAMP_ENC_MAX_CFG);

        val = VFE_0_CLAMP_ENC_MIN_CFG_CH0 |
                VFE_0_CLAMP_ENC_MIN_CFG_CH1 |
                VFE_0_CLAMP_ENC_MIN_CFG_CH2;

        writel_relaxed(val, vfe->base + VFE_0_CLAMP_ENC_MIN_CFG);
}

static void vfe_set_cgc_override(struct vfe_device *vfe, u8 wm, u8 enable)
{
        /* empty */
}

static void vfe_set_camif_cfg(struct vfe_device *vfe, struct vfe_line *line)
{
        u32 val;

        switch (line->fmt[MSM_VFE_PAD_SINK].code) {
        case MEDIA_BUS_FMT_YUYV8_2X8:
                val = VFE_0_CORE_CFG_PIXEL_PATTERN_YCBYCR;
                break;
        case MEDIA_BUS_FMT_YVYU8_2X8:
                val = VFE_0_CORE_CFG_PIXEL_PATTERN_YCRYCB;
                break;
        case MEDIA_BUS_FMT_UYVY8_2X8:
        default:
                val = VFE_0_CORE_CFG_PIXEL_PATTERN_CBYCRY;
                break;
        case MEDIA_BUS_FMT_VYUY8_2X8:
                val = VFE_0_CORE_CFG_PIXEL_PATTERN_CRYCBY;
                break;
        }

        val |= VFE_0_CORE_CFG_COMPOSITE_REG_UPDATE_EN;
        writel_relaxed(val, vfe->base + VFE_0_CORE_CFG);

        val = line->fmt[MSM_VFE_PAD_SINK].width * 2 - 1;
        val |= (line->fmt[MSM_VFE_PAD_SINK].height - 1) << 16;
        writel_relaxed(val, vfe->base + VFE_0_CAMIF_FRAME_CFG);

        val = line->fmt[MSM_VFE_PAD_SINK].width * 2 - 1;
        writel_relaxed(val, vfe->base + VFE_0_CAMIF_WINDOW_WIDTH_CFG);

        val = line->fmt[MSM_VFE_PAD_SINK].height - 1;
        writel_relaxed(val, vfe->base + VFE_0_CAMIF_WINDOW_HEIGHT_CFG);

        val = 0xffffffff;
        writel_relaxed(val, vfe->base + VFE_0_CAMIF_SUBSAMPLE_CFG);

        val = 0xffffffff;
        writel_relaxed(val, vfe->base + VFE_0_CAMIF_IRQ_FRAMEDROP_PATTERN);

        val = 0xffffffff;
        writel_relaxed(val, vfe->base + VFE_0_CAMIF_IRQ_SUBSAMPLE_PATTERN);

        val = VFE_0_RDI_CFG_x_MIPI_EN_BITS;
        vfe_reg_set(vfe, VFE_0_RDI_CFG_x(0), val);

        val = VFE_0_CAMIF_CFG_VFE_OUTPUT_EN;
        writel_relaxed(val, vfe->base + VFE_0_CAMIF_CFG);
}

static void vfe_set_camif_cmd(struct vfe_device *vfe, u8 enable)
{
        u32 cmd;

        cmd = VFE_0_CAMIF_CMD_CLEAR_CAMIF_STATUS | VFE_0_CAMIF_CMD_NO_CHANGE;
        writel_relaxed(cmd, vfe->base + VFE_0_CAMIF_CMD);

        /* Make sure camif command is issued written before it is changed again */
        wmb();

        if (enable)
                cmd = VFE_0_CAMIF_CMD_ENABLE_FRAME_BOUNDARY;
        else
                cmd = VFE_0_CAMIF_CMD_DISABLE_FRAME_BOUNDARY;

        writel_relaxed(cmd, vfe->base + VFE_0_CAMIF_CMD);
}

static void vfe_set_module_cfg(struct vfe_device *vfe, u8 enable)
{
        u32 val_lens = VFE_0_MODULE_LENS_EN_DEMUX |
                       VFE_0_MODULE_LENS_EN_CHROMA_UPSAMPLE;
        u32 val_zoom = VFE_0_MODULE_ZOOM_EN_SCALE_ENC |
                       VFE_0_MODULE_ZOOM_EN_CROP_ENC;

        if (enable) {
                vfe_reg_set(vfe, VFE_0_MODULE_LENS_EN, val_lens);
                vfe_reg_set(vfe, VFE_0_MODULE_ZOOM_EN, val_zoom);
        } else {
                vfe_reg_clr(vfe, VFE_0_MODULE_LENS_EN, val_lens);
                vfe_reg_clr(vfe, VFE_0_MODULE_ZOOM_EN, val_zoom);
        }
}

static int vfe_camif_wait_for_stop(struct vfe_device *vfe, struct device *dev)
{
        u32 val;
        int ret;

        ret = readl_poll_timeout(vfe->base + VFE_0_CAMIF_STATUS,
                                 val,
                                 (val & VFE_0_CAMIF_STATUS_HALT),
                                 CAMIF_TIMEOUT_SLEEP_US,
                                 CAMIF_TIMEOUT_ALL_US);
        if (ret < 0)
                dev_err(dev, "%s: camif stop timeout\n", __func__);

        return ret;
}

/*
 * vfe_isr - VFE module interrupt handler
 * @irq: Interrupt line
 * @dev: VFE device
 *
 * Return IRQ_HANDLED on success
 */
static irqreturn_t vfe_isr(int irq, void *dev)
{
        struct vfe_device *vfe = dev;
        u32 value0, value1;
        int i, j;

        vfe->ops->isr_read(vfe, &value0, &value1);

        dev_dbg(vfe->camss->dev, "VFE: status0 = 0x%08x, status1 = 0x%08x\n",
                value0, value1);

        if (value0 & VFE_0_IRQ_STATUS_0_RESET_ACK)
                vfe->isr_ops.reset_ack(vfe);

        if (value1 & VFE_0_IRQ_STATUS_1_VIOLATION)
                vfe->ops->violation_read(vfe);

        if (value1 & VFE_0_IRQ_STATUS_1_BUS_BDG_HALT_ACK)
                vfe->isr_ops.halt_ack(vfe);

        for (i = VFE_LINE_RDI0; i < vfe->line_num; i++)
                if (value0 & VFE_0_IRQ_STATUS_0_line_n_REG_UPDATE(i))
                        vfe->isr_ops.reg_update(vfe, i);

        if (value0 & VFE_0_IRQ_STATUS_0_CAMIF_SOF)
                vfe->isr_ops.sof(vfe, VFE_LINE_PIX);

        for (i = VFE_LINE_RDI0; i <= VFE_LINE_RDI2; i++)
                if (value1 & VFE_0_IRQ_STATUS_1_RDIn_SOF(i))
                        vfe->isr_ops.sof(vfe, i);

        for (i = 0; i < MSM_VFE_COMPOSITE_IRQ_NUM; i++)
                if (value0 & VFE_0_IRQ_STATUS_0_IMAGE_COMPOSITE_DONE_n(i)) {
                        vfe->isr_ops.comp_done(vfe, i);
                        for (j = 0; j < ARRAY_SIZE(vfe->wm_output_map); j++)
                                if (vfe->wm_output_map[j] == VFE_LINE_PIX)
                                        value0 &= ~VFE_0_IRQ_MASK_0_IMAGE_MASTER_n_PING_PONG(j);
                }

        for (i = 0; i < MSM_VFE_IMAGE_MASTERS_NUM; i++)
                if (value0 & VFE_0_IRQ_STATUS_0_IMAGE_MASTER_n_PING_PONG(i))
                        vfe->isr_ops.wm_done(vfe, i);

        return IRQ_HANDLED;
}

static u16 vfe_get_ub_size(u8 vfe_id)
{
        /* On VFE4.8 the ub-size is the same on both instances */
        return MSM_VFE_VFE0_UB_SIZE_RDI;
}

static void vfe_wm_enable(struct vfe_device *vfe, u8 wm, u8 enable)
{
        if (enable)
                writel_relaxed(2 << VFE_0_BUS_IMAGE_MASTER_n_SHIFT(wm),
                               vfe->base + VFE_0_BUS_IMAGE_MASTER_CMD);
        else
                writel_relaxed(1 << VFE_0_BUS_IMAGE_MASTER_n_SHIFT(wm),
                               vfe->base + VFE_0_BUS_IMAGE_MASTER_CMD);

        /* The WM must be enabled before sending other commands */
        wmb();
}

static void vfe_set_qos(struct vfe_device *vfe)
{
        u32 val = VFE_0_BUS_BDG_QOS_CFG_0_CFG;
        u32 val3 = VFE_0_BUS_BDG_QOS_CFG_3_CFG;
        u32 val4 = VFE_0_BUS_BDG_QOS_CFG_4_CFG;
        u32 val7 = VFE_0_BUS_BDG_QOS_CFG_7_CFG;

        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_QOS_CFG_0);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_QOS_CFG_1);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_QOS_CFG_2);
        writel_relaxed(val3, vfe->base + VFE_0_BUS_BDG_QOS_CFG_3);
        writel_relaxed(val4, vfe->base + VFE_0_BUS_BDG_QOS_CFG_4);
        writel_relaxed(val4, vfe->base + VFE_0_BUS_BDG_QOS_CFG_5);
        writel_relaxed(val4, vfe->base + VFE_0_BUS_BDG_QOS_CFG_6);
        writel_relaxed(val7, vfe->base + VFE_0_BUS_BDG_QOS_CFG_7);
}

static void vfe_set_ds(struct vfe_device *vfe)
{
        u32 val = VFE_0_BUS_BDG_DS_CFG_0_CFG;
        u32 val16 = VFE_0_BUS_BDG_DS_CFG_16_CFG;

        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_0);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_1);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_2);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_3);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_4);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_5);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_6);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_7);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_8);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_9);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_10);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_11);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_12);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_13);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_14);
        writel_relaxed(val, vfe->base + VFE_0_BUS_BDG_DS_CFG_15);
        writel_relaxed(val16, vfe->base + VFE_0_BUS_BDG_DS_CFG_16);
}

static void vfe_isr_read(struct vfe_device *vfe, u32 *value0, u32 *value1)
{
        *value0 = readl_relaxed(vfe->base + VFE_0_IRQ_STATUS_0);
        *value1 = readl_relaxed(vfe->base + VFE_0_IRQ_STATUS_1);

        writel_relaxed(*value0, vfe->base + VFE_0_IRQ_CLEAR_0);
        writel_relaxed(*value1, vfe->base + VFE_0_IRQ_CLEAR_1);

        /* Enforce barrier between local & global IRQ clear */
        wmb();
        writel_relaxed(VFE_0_IRQ_CMD_GLOBAL_CLEAR, vfe->base + VFE_0_IRQ_CMD);
}

/*
 * vfe_pm_domain_off - Disable power domains specific to this VFE.
 * @vfe: VFE Device
 */
static void vfe_pm_domain_off(struct vfe_device *vfe)
{
        struct camss *camss = vfe->camss;

        device_link_del(camss->genpd_link[vfe->id]);
}

/*
 * vfe_pm_domain_on - Enable power domains specific to this VFE.
 * @vfe: VFE Device
 */
static int vfe_pm_domain_on(struct vfe_device *vfe)
{
        struct camss *camss = vfe->camss;
        enum vfe_line_id id = vfe->id;

        camss->genpd_link[id] = device_link_add(camss->dev, camss->genpd[id], DL_FLAG_STATELESS |
                                                DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE);

        if (!camss->genpd_link[id]) {
                dev_err(vfe->camss->dev, "Failed to add VFE#%d to power domain\n", id);
                return -EINVAL;
        }

        return 0;
}

static void vfe_violation_read(struct vfe_device *vfe)
{
        u32 violation = readl_relaxed(vfe->base + VFE_0_VIOLATION_STATUS);

        pr_err_ratelimited("VFE: violation = 0x%08x\n", violation);
}

static const struct vfe_hw_ops_gen1 vfe_ops_gen1_4_8 = {
        .bus_connect_wm_to_rdi = vfe_bus_connect_wm_to_rdi,
        .bus_disconnect_wm_from_rdi = vfe_bus_disconnect_wm_from_rdi,
        .bus_enable_wr_if = vfe_bus_enable_wr_if,
        .bus_reload_wm = vfe_bus_reload_wm,
        .camif_wait_for_stop = vfe_camif_wait_for_stop,
        .enable_irq_common = vfe_enable_irq_common,
        .enable_irq_pix_line = vfe_enable_irq_pix_line,
        .enable_irq_wm_line = vfe_enable_irq_wm_line,
        .get_ub_size = vfe_get_ub_size,
        .halt_clear = vfe_halt_clear,
        .halt_request = vfe_halt_request,
        .set_camif_cfg = vfe_set_camif_cfg,
        .set_camif_cmd = vfe_set_camif_cmd,
        .set_cgc_override = vfe_set_cgc_override,
        .set_clamp_cfg = vfe_set_clamp_cfg,
        .set_crop_cfg = vfe_set_crop_cfg,
        .set_demux_cfg = vfe_set_demux_cfg,
        .set_ds = vfe_set_ds,
        .set_module_cfg = vfe_set_module_cfg,
        .set_qos = vfe_set_qos,
        .set_rdi_cid = vfe_set_rdi_cid,
        .set_realign_cfg = vfe_set_realign_cfg,
        .set_scale_cfg = vfe_set_scale_cfg,
        .set_xbar_cfg = vfe_set_xbar_cfg,
        .wm_enable = vfe_wm_enable,
        .wm_frame_based = vfe_wm_frame_based,
        .wm_get_ping_pong_status = vfe_wm_get_ping_pong_status,
        .wm_line_based = vfe_wm_line_based,
        .wm_set_framedrop_pattern = vfe_wm_set_framedrop_pattern,
        .wm_set_framedrop_period = vfe_wm_set_framedrop_period,
        .wm_set_ping_addr = vfe_wm_set_ping_addr,
        .wm_set_pong_addr = vfe_wm_set_pong_addr,
        .wm_set_subsample = vfe_wm_set_subsample,
        .wm_set_ub_cfg = vfe_wm_set_ub_cfg,
};

static void vfe_subdev_init(struct device *dev, struct vfe_device *vfe)
{
        vfe->isr_ops = vfe_isr_ops_gen1;
        vfe->ops_gen1 = &vfe_ops_gen1_4_8;
        vfe->video_ops = vfe_video_ops_gen1;

        vfe->line_num = VFE_LINE_NUM_GEN1;
}

const struct vfe_hw_ops vfe_ops_4_8 = {
        .global_reset = vfe_global_reset,
        .hw_version = vfe_hw_version,
        .isr_read = vfe_isr_read,
        .isr = vfe_isr,
        .pm_domain_off = vfe_pm_domain_off,
        .pm_domain_on = vfe_pm_domain_on,
        .reg_update_clear = vfe_reg_update_clear,
        .reg_update = vfe_reg_update,
        .subdev_init = vfe_subdev_init,
        .vfe_disable = vfe_gen1_disable,
        .vfe_enable = vfe_gen1_enable,
        .vfe_halt = vfe_gen1_halt,
        .violation_read = vfe_violation_read,
};